CA2414630A1 - High strength ream wrap - Google Patents
High strength ream wrap Download PDFInfo
- Publication number
- CA2414630A1 CA2414630A1 CA002414630A CA2414630A CA2414630A1 CA 2414630 A1 CA2414630 A1 CA 2414630A1 CA 002414630 A CA002414630 A CA 002414630A CA 2414630 A CA2414630 A CA 2414630A CA 2414630 A1 CA2414630 A1 CA 2414630A1
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- CA
- Canada
- Prior art keywords
- copolymer
- layer
- terpolymer
- paper
- monomer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/3188—Next to cellulosic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/3188—Next to cellulosic
- Y10T428/31895—Paper or wood
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/3188—Next to cellulosic
- Y10T428/31895—Paper or wood
- Y10T428/31899—Addition polymer of hydrocarbon[s] only
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/3188—Next to cellulosic
- Y10T428/31895—Paper or wood
- Y10T428/31899—Addition polymer of hydrocarbon[s] only
- Y10T428/31902—Monoethylenically unsaturated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon
Abstract
A new high strength poly one-side ream wrapper made by utilizing copolymer and/or terpolymer resins.
Description
rocket: PI73-7 iIIG.H STltlJl~ G'1 H »yvl_ wk.~.l' Field of the Invention The preaent invention relates to a high strength poly one-siil!~ rmnn wrapper.
BctClCtrIULlIId of the Invention Ream wrap is the wrapper around the packages uf~um sum (R ;t X 11 etc.) paper that i.s used for printers, copy machines, etc. This wrapper has traditionally been paper (poly coated or two papers laminated with poly), plastic film_ or a paper/solid plastic film :,~on,lnnalion.
iJS Patent 5.250,348 relates to an improved wrapper laapcr t:oz~ use in very low eozuaet pressure applications. A wrapper paper foz- ~7r~SStll't: sC11S11lVC
products bearing on one of its flat surfaces a layer of polyethylene and on the opposite o1' its flat surfaces a layer ~f a pri.zner selected from the polyalkylencimioe class. at ir~.,~st port'ons ofthe opposite Ilat coated surfaces facing one another icz overlapping oclationship when the paper is wrapped about a product, the overlying areas of the wrapper paper being sealed to one another by heat means and the application ofWerv low pressure: to the overlapping portions. T'he invention relates to wrapper papers fur pressure sc;nsitive products, such as paper employed in the wrapping Fur storage and shipping e~f ream quantities of carboniess panting papers.
US Patent 5,989,724 rElates to a recyclable and rehnthainle rt:am wrap and related methods of tnanufaentre. Recyclable and repulpable coatc~:l paper atoek, preferably fer osc as ream wrap, comprising a substrate coated on at least one smhce with a base coat and at least otze additional coat over a base coat_ T3otlz coats .mr yrcater based dispersions of a polymer selected from the group consisting of acrylic; pulynrc:rs, acrylic copolymers, polyvinyl acetate, polyvinyl alcohol, ethylene-vinyl acetate, pol~~vinvl chloride, styrene butadiene copolymers, polyvinylidiene chloride and Its r(TE)(111'~i»~~:s, ifr stare;h. The wax free coating forn~s a pin-hole free continuous film on the substrate v~hich is resident to water and water vapor. The invention also ll7cludes pl'llC;c~;S~,~ la»m,alsing and recycling t1c coated stocl~s. The invention concerns coated paper stt~c.ics. t~relerably for use as ream wraps, comprised of. a substrate coated on at least one surl:ae~ wish ~ base coat and at least. one additional coat over said base coal both of wlric( arc ;~phlied as wax free water hawed polymeric dispersions.
>;1o T'atent 4,p20,21~ relates to an extrusicur oTpol ;~crlctir~ ~~atcr paper at decreased temperatures. By coating a paper substrate first with a poiyallcyleneimine and then with a polymer containing groups which react chemically wits, the imine, groups of the polyalkyleneimine, a polyolefin can be ext»rded onto t:he suhstr.~Uc with good adhesion at temperatures lower than the temperature That would be required 1c, cytain the same degree of adhesion if the polymer containing the reactive groups were rn~t present.
US Patent 3,230,135 relates to a process for coating paper using a polyimine precoat anil producLS thereof The invention relates to a rnctlrnd c~ f coating paper materials with a thin polymer film, and to the polymer coated prorluct. The invention relates to depositing of an organic polyimin~: which has tl~c lrasi~~ chain structure of a polyethyleaneimine, interposed between a substrate mld a heat-se;~l~:cl polymer coating thereon. particularly a polyethylene coating, which impruw:'s adloTsion and heat seal strength-As small offices and home offices have hrolifer,tei! elm rJisiribuiion of reams of leper ha.s changed from boxes to large users, to i~ctail sn~ne~ mr,l ,ii~il order for the small ~ffice/home office segments. This has placed increasio~ dcm;an,lc ,m the wrapper because aF the increased a.nd rougher handling o.f the ine(i~iilual ~ c~~ms.
The result has been more reams breaking open which bre:~.ks the moisture I~;:~rriur, allowing the sheets of wrapped paper to absorb moisture, get minor earl, amt ia,r, ;,, nln~ printer or copy nnaclnine. As :t result the market needs a stronger re,,m w ~ ;y~tlm ~YU.rchine direction and CrpSS dis~cction tear strength properties are a zncasure i~f the ovcr,~tl .strength of the wrapper and its ability to resist breaking open.
One such ream wrap product is a poly one-side cream wu;tl. The poly one-side reazxa wrap is a sheet of paper with a low density polyethviunc c,~ating all nnc side. A
typical pa.her used in this application is produced by Carp I~>r in :n ',y pound (per 3,0U0 sq feet) ha.sis weight. Persons making ream wrap v~ould pm lnw-il~;nsitv polyethylene tmnnomer on the product in various weights (7 to 14 prnmds ~,ft~,~lye~hylene per 3,00U sq.
feet of product is a typical poly coating amount). The low-density polyethylene used is a rnotaomcr resin produced with ethylene. Below is rcprcsl:mmvc- ~f~rAngth data for 10 pourtils of low density monomer coated on paper- As shmarn lxlenv, this coating has increased the tear strength of the product only sliglOly verses plsn Paper utilizing paper industry strength tcstS (Standard TAPPI tests).
Machine t7ircctioa C's-~ss Direction Tea r Tcar SO;;i C:atzfo.r Paper 122 1 ;7 501 C:anfor Paper ~vitli 12=~ 14~
10# Polyethylene monomer Strength Gain Z 4 MD Tear test-TAPPI T-414-units grams of force CD Tear test-TAPPI T-414-units grams of force Summary of the Invention The present invention relates to a new high strength poly one-side ream wrapper. The product is made by utilizing copolymer and~'or terpolymer resins. The copolymer and terpolymer resins are made by combining butene, hexene, and/or octene with ethylene or propylene in the feed stocks being used to make the resin. It is an object of the present invention for the product to be produced by applying the copolymer or terpolymer to the paper surface or by blending the copolymer and/or terpolymer resins with low density polyethylene monomer resins before applying it to the paper surface. It is an object of the invention to produce the product of the present invention by co-extruding the low density polyethylene resin (monomer utilizing ethylene feed stock) with copolymer or terpolymer resins.
The present invention relates to a high strength poly one-side ream wrapper comprising paper arid copolymer and/or terpolymer resins. The copolymer and/or terpolymer resins comprise butene, hexene, and/or octene with ethylene or propylene in feed stocks. The copolymer and/or terpolymer resins are applied to a surface of the paper. It is an object of the present invention for the paper to be additionally coated with low density polyethylene monomer resins. It is an object of the present invention for the low density polyethylene resin to be a monomer utilizing ethylene feed stock.
The present invention relates to , method for hro~incin~ :. High strength poly one side teat" wrapper cotxtprising; co-extruding a low det,sitv polynhvlene resin with copolyttter or terpolymer resists onto a paper surface.
'L'he present invention relates to a method I:or prealociot~ :~ lti~h strength poly one ~icle ~-ean, wrapper comprising; Feeding a copolymer aocllor ~crp~lvme~' into an extruder tl.ie c:reWing an extrudate and then coating a paper sur'lauev wills ~;:~ic.l o~ctrudaie between a.
baclting roll and a chill roll. This Conns a poly coated p;tt,cr uNiil~ the:
copolymer and/or tcrpolymer coating.
The present invention relates to a method fur proclucing ,. I,i:rh Strength poly one side recent wrapper comprising; blending a low-density tnonotncr plycthylene resin with a copotyttter and/or tcrpolymer resin and feeding the ntixiorc: into att oxtruder die creating an ex.tntdate. The extrt~date is applied to a paper surface, betwec~~ a backing toll and a chill roll creating a poly coated paper wifih polyethy)ene n,onm,aer a.nd copolymer or tepolytner blended into the monomer.
The present invention relates to a method 'for producing a high strength poly one side ream wrapper comprising; coextruding a copolymer -,.u~d/or rc; n~~olymer with a polyethylene ntonomcr layer by feeding the copolymer and/cn- terpolymer layer and the polyctllylene monomer layer through a coextruder die fo.m,ity a uncxirudace.
The copoIyttter and/or terpolymer layer can be blended with a t~e,lycilwlenc tnonomcr. The coextrudate is applied to a surface of a paper wherein the cnpolynccr and/or terpoiymcr Iayer face the paper surface. the co-extntdate being applied 1~, t-ltc paper surface between a backing roll and a chill roll; creating a poly coated paper Ime-ing cme Layer of copolymer or terp~lytner and one layer oFpolyethylene monomer.
'The present invention relates to a high strength poly csnc slate ream wrapper comprising; a co-extruded poly coated paper having one lw~cr ur ~~sl~olymer and/or te~pulymer on top of the paper and one layer of polyethylem~ u~anc.~m~r on top of the copolymer or terpolymer layer. The copolymer and/or tey~olvuicr hyr can also contain polyethylene monomer.
The present invention further relates to a method for producing a lugh strength poly one side ream wrapper comprising; coextruding a copolymer and/or terpolymer layer with a polyethylene monomer layer by fecdinfi tl~e coha)ynoe r and/or tepolymer Iayer and the polyethylene monomer layer through a coextrudcr die to =onn a cocxtrudate. The copolymer and/or terpolymer layer cats 6e blenders with a polyEthylcne m:unomcr The coextrudate is applied to a paper surface wiU~ the polyethylene monomer facing the paper; the coextrudate applied to the paper surfaces: bciwcen 2 backing roll and a chill roll. This creates a poly coated paper with one layer of coholym.er or terpoly~ner and one layer of polyethylene monomer.
Tlo~ present invention relates to a high strength poly one side ream wrapper comprising; a co-extruded poly coated paper liaving one layer o.f polyellrylene monomez on top of a paper layer and a layer of copolymer or terpolymer on top of the polyethylene rr.onomer layer. 'fhe copolymer andlor terpolytner layer can he hler~decl with polyethylene monomer.
The present invention relates to a method for producir~~ a high strength poly one side ream wrapper c:o~nprising; coextn lding a layer of copolyner and/or terpolymer and a leyer ofpolyethylene monomer on each side of the copolymer atuilur terholymer layer by feeding the copolymer and/or terpolytner layer and the polyrthvleno monomer layers through a cncxt~uder die forming a coextrudatc. The copolyn~c~- and/or terpvlymer layer can. also contain polyethylene monomer. The coexlr~.olate is y>l>liefl to a paper surface so Lhat cme of the polyethylene monomer layers faces the paper by nrn«ing the coextrudate and the paper between a backing roll and a chill roll. 'this c~ cares a poly coated paper with one layer of copolymer or terpolymer between tivo layers of polyethylene monomer.
The present invention relates to a higli strength poly wnc sido ream wrapper Campri~ing; a poly coated paper having one layer of polyeil~y Iwc ~1701101I1Cr On top of a paper layer rollowed by a layer of copolymer or telPolymer having cm top of it a layer of polyelhyle,ne monomer. The copolymer and/or terpolymer lalyer can al.5o contain p«lyethyl.cnc monomer.
Brief Description of the T)rawings Fi cure 1 illustrates a process for forming a poly coated paper wish a cUpolymer and/or terpolymer coating.
I'igvre 2 illustrates a process for forming a poly coated paper with polyethylene monomer and copolymer and/or tcrpolymerbIended into the monomer.
Figure 3 illustrates a process for forming a coextruded poly cnaterl paper with one layer of copolymer or terpolymer and one layer of polyethylene tT~anomer_ Figure 4 illustrates the product rormed by the process off FiQUre 3_ Figtu-e ~ illustrates a process for forming a coexiruded poly coated p;rper with one layer o1-copolymer or terpolymer and one layer of polyethylene m~nc~mer.
Fiei~re 6 illustrates the product formed by the process rat Figure: ~.
F~'igure 7 illustrates a process for forniing a coextrtided poly ~aaic~:l paper with one layer of copolymer or tezpolymer between two layers o~f polyethylene nno.nomer.
Figure 8 illustrates the product formed by the process of Figure 7.
Figure 9 illustrates a process for forming a co-extruded poly coated paper with one layer of polyethylene monomer between two layers of copolymer and/or terpolymer resin.
Figure 10 illustrates the product formed by the process of Figure 9.
Detailed Description of the Invention In an embodiment of the present invention, the low density polyethylene resin is a monomer utilizing ethylene feed stock. The copolymer and terpolymer resins are made by combining butene, hexene and/or octene feedstock with ethylene or propylene feedstock.
In one embodiment shown in Figure l, the copolymer and terpolymer resins are applied to the paper surface. The copolymer and/or terpolymer 10 are fed into an extruder die 30 where it becomes extrudate 40. The extrudate 40 is coated on the paper 20 between the backing roll SO
and the chill roll 60 to form a poly coated paper with copolymer and/or terpolymer coating 70.
In a further embodiment shown in Figure 2, low-density monomer polyethylene resin 80 is mixed with copolymer and/or terpolymer resins 10 before or as being fed into an extruder die 30. The low-density polyethylene monomer and copolymer and/or terpolymer resin becomes extrudate 40. The extrudate 40 is applied to the paper surface 20 between the backing roll 50 and the chill roll 60. This creates a poly coated paper with polyethylene monomer and copolymer or terpolymer blended into the monomer 90.
In a further embodiment, shown in Figure 3, the copolymer and/or terpolymer layer 10 which may be blended with polyethylene monomer, is coextruded with a polyethylene monomer layer 80. The copolymer and/or terpolymer layer 10 and the polyethylene monomer layer 80 are fed through a coextruder die 130 to form coextrudate 140 wherein the coextrudate 140 has the copolymer and/or terl,olymcr 10 facing the paper 120. The co-extrudate 140 is applied to the paper st~rfo;c 12l) hetween the backing roll 50 a.nd the chill roll 60. This creates a poly coated paper l 7U with one layer of copolymer or te~polymer and one layer of polyethylene mwnc?mer.
Figure 4 shows the product made br~ the pi'()L;CSS S17U\Wl Jn k' i~w a 3 wherein the co-extruded poly coated paper 17U has one layer of copolymer or ~enpolytner 180 on top c~f the paper 12U aad nne layer of polyethylene monmncr 1 1 ~ I m~ tcala c~f layer 180.
In figure 5 the copolymer and/or teyolymer layer l.U ~vhlCh 11,a'~ be blended with a I,olyeU~ylenc monomer. is coextn~ded with a polyethylene nn_rnc,mcn Inyer R0. The copolytver and/or terpolymer Iayer 1 O and the polyethylene n,onrnt,cr layer 80 are fed through a coextruder die 130 to form coextrudate 140 wherein tUe c~~cxtnidate 140 has the polyethylene nuonomcr 80 facuig tJre paper 120. The cc~-c'xtmchne I 40 is applied to the paper surface 120 between the backing roll 50 and the c1; f l rot l C,O.
This creates a holy coated paper 170 with one layer of copolymer on terpolyn,cr ;mc.l cue layer of polyethylene »monomer.
Figure G shows product made by the process shown in Figure 5 wherein the co-c~:ti.-uded poly coated paper 170 has one layer of polyethylene monc>anerv 110 on top of paper lavcr I2U and layer 180 on top of layer 11U.
1n figure 7 the copolymer and/or terpolymer layer 1 t) w~f~i~:h n,yr 1,e blended with polyethylene monomer, is coextruded with a layer of polyetl~ylcroc monomer 80 on each si~:le. 'fhe copolymer and/or terpolymcr layer 10 and the polvethylewr rt,onon~er layers 80 are fed through a eocxtrudcr die 130 to form coexjrudate 1=tU wherein lze coe;xtruclatc 1~t0 has one of the polyethylene monomer layers 80 facing the l,at,m- I 20.
The co-ea;trudste 140 is applied to the paper surface 120 between floe ltorlr ink rc~li 50 anti the chill rril h(1. ~1'his creates a poly c:uated paper 210 with oue layer of col~c,lyn,er or terpolymer ht~,rwern two layers of polyethylene monomer.
Higure 8 shows the product made by the process simw.a io lyrnr~ 7 wherein the cc,-extruded poly canted paper 120 has one layer of pofyr:~lmlcne »» nuoner 110 on top of paper layer 120 followed by layer I80 having oz~ top of it o ~;e~cmr.l l:,vcx~
110.
In figure 9 the copolymer and/or terpolymer layer 10 which rnay be blended with pc~lycthylene monomer, is coextruded with a layer of Polyethylene m~oamer 80 on each si:le. The copolymer and/or tcrpolymer layer 10 and the palyethylrne rnonotner layers 80 arc .fed through a coextntdcr die 130 to form cocxtntdate 141) wherein tlae coextrudate 110 hits nrxc of tl7.e polyethylene manotner layers g0 fatcing 11~~ I>al,e~-1;%C~, The co-a}:trudaic 1.40 is applied to the papEr surface 120 between (1u~ ba.cl;ing roll 50 and the chill roll fit). 'f'his creates a poly coated paper 220 with cme layer ,ai'mp"~tym~:r or tcrpolyLner btatwccn two layers o1'polyethylenc monomer.
Cigure 10 shUWS the product made by the process sl~,nvo in I lyre 9 wherein the ec,-cxtmded poly coated paper 120 has one layer of holyelhvicnc monomer l 10 on top of paper layer 120 followed by layer 180 having on top of it a ,ecc,rr~l layer 11U.
By utilizing d7ese copolymer and/or terpolymer resins the l~r~~sent invention a.chicvas a. S1J175talltlal improvement in the tear strength ofthe: ream wrapper. Below are reSnltS 11SJI7~ the same 50# CanFor paper as above and f ~1 hc~mols c~f-~v,r»hined copolymer or terpolymer resin and Low density polyethylene monomer which .shows the significant st:-engtla gain versus the traditional low density polvetlnylrnc~ ~17,,wo :U,-we-Machine Direction r. 'rows Direction 'Dear 'Gear IO
i0f~ Canfior T'apcr ! 22 1'~
5(1# (,anfor Paper with 14# copolymer 196 240 ar~clior terpolymer resin or a blend of Ic,w density polyetlnylenc monomer resin and copolyzncr or terpolymcr resin or a coextn»icm of low density monomer polyethylene rein aaid copolymer and/or terpolymer resin Slrenath Ciain 1~1T.~ Tear test-'f APP1 T-414-units grams ot-lorcc C:D Tcar test-'~'APP1 T-414-LUiits grams of force a
BctClCtrIULlIId of the Invention Ream wrap is the wrapper around the packages uf~um sum (R ;t X 11 etc.) paper that i.s used for printers, copy machines, etc. This wrapper has traditionally been paper (poly coated or two papers laminated with poly), plastic film_ or a paper/solid plastic film :,~on,lnnalion.
iJS Patent 5.250,348 relates to an improved wrapper laapcr t:oz~ use in very low eozuaet pressure applications. A wrapper paper foz- ~7r~SStll't: sC11S11lVC
products bearing on one of its flat surfaces a layer of polyethylene and on the opposite o1' its flat surfaces a layer ~f a pri.zner selected from the polyalkylencimioe class. at ir~.,~st port'ons ofthe opposite Ilat coated surfaces facing one another icz overlapping oclationship when the paper is wrapped about a product, the overlying areas of the wrapper paper being sealed to one another by heat means and the application ofWerv low pressure: to the overlapping portions. T'he invention relates to wrapper papers fur pressure sc;nsitive products, such as paper employed in the wrapping Fur storage and shipping e~f ream quantities of carboniess panting papers.
US Patent 5,989,724 rElates to a recyclable and rehnthainle rt:am wrap and related methods of tnanufaentre. Recyclable and repulpable coatc~:l paper atoek, preferably fer osc as ream wrap, comprising a substrate coated on at least one smhce with a base coat and at least otze additional coat over a base coat_ T3otlz coats .mr yrcater based dispersions of a polymer selected from the group consisting of acrylic; pulynrc:rs, acrylic copolymers, polyvinyl acetate, polyvinyl alcohol, ethylene-vinyl acetate, pol~~vinvl chloride, styrene butadiene copolymers, polyvinylidiene chloride and Its r(TE)(111'~i»~~:s, ifr stare;h. The wax free coating forn~s a pin-hole free continuous film on the substrate v~hich is resident to water and water vapor. The invention also ll7cludes pl'llC;c~;S~,~ la»m,alsing and recycling t1c coated stocl~s. The invention concerns coated paper stt~c.ics. t~relerably for use as ream wraps, comprised of. a substrate coated on at least one surl:ae~ wish ~ base coat and at least. one additional coat over said base coal both of wlric( arc ;~phlied as wax free water hawed polymeric dispersions.
>;1o T'atent 4,p20,21~ relates to an extrusicur oTpol ;~crlctir~ ~~atcr paper at decreased temperatures. By coating a paper substrate first with a poiyallcyleneimine and then with a polymer containing groups which react chemically wits, the imine, groups of the polyalkyleneimine, a polyolefin can be ext»rded onto t:he suhstr.~Uc with good adhesion at temperatures lower than the temperature That would be required 1c, cytain the same degree of adhesion if the polymer containing the reactive groups were rn~t present.
US Patent 3,230,135 relates to a process for coating paper using a polyimine precoat anil producLS thereof The invention relates to a rnctlrnd c~ f coating paper materials with a thin polymer film, and to the polymer coated prorluct. The invention relates to depositing of an organic polyimin~: which has tl~c lrasi~~ chain structure of a polyethyleaneimine, interposed between a substrate mld a heat-se;~l~:cl polymer coating thereon. particularly a polyethylene coating, which impruw:'s adloTsion and heat seal strength-As small offices and home offices have hrolifer,tei! elm rJisiribuiion of reams of leper ha.s changed from boxes to large users, to i~ctail sn~ne~ mr,l ,ii~il order for the small ~ffice/home office segments. This has placed increasio~ dcm;an,lc ,m the wrapper because aF the increased a.nd rougher handling o.f the ine(i~iilual ~ c~~ms.
The result has been more reams breaking open which bre:~.ks the moisture I~;:~rriur, allowing the sheets of wrapped paper to absorb moisture, get minor earl, amt ia,r, ;,, nln~ printer or copy nnaclnine. As :t result the market needs a stronger re,,m w ~ ;y~tlm ~YU.rchine direction and CrpSS dis~cction tear strength properties are a zncasure i~f the ovcr,~tl .strength of the wrapper and its ability to resist breaking open.
One such ream wrap product is a poly one-side cream wu;tl. The poly one-side reazxa wrap is a sheet of paper with a low density polyethviunc c,~ating all nnc side. A
typical pa.her used in this application is produced by Carp I~>r in :n ',y pound (per 3,0U0 sq feet) ha.sis weight. Persons making ream wrap v~ould pm lnw-il~;nsitv polyethylene tmnnomer on the product in various weights (7 to 14 prnmds ~,ft~,~lye~hylene per 3,00U sq.
feet of product is a typical poly coating amount). The low-density polyethylene used is a rnotaomcr resin produced with ethylene. Below is rcprcsl:mmvc- ~f~rAngth data for 10 pourtils of low density monomer coated on paper- As shmarn lxlenv, this coating has increased the tear strength of the product only sliglOly verses plsn Paper utilizing paper industry strength tcstS (Standard TAPPI tests).
Machine t7ircctioa C's-~ss Direction Tea r Tcar SO;;i C:atzfo.r Paper 122 1 ;7 501 C:anfor Paper ~vitli 12=~ 14~
10# Polyethylene monomer Strength Gain Z 4 MD Tear test-TAPPI T-414-units grams of force CD Tear test-TAPPI T-414-units grams of force Summary of the Invention The present invention relates to a new high strength poly one-side ream wrapper. The product is made by utilizing copolymer and~'or terpolymer resins. The copolymer and terpolymer resins are made by combining butene, hexene, and/or octene with ethylene or propylene in the feed stocks being used to make the resin. It is an object of the present invention for the product to be produced by applying the copolymer or terpolymer to the paper surface or by blending the copolymer and/or terpolymer resins with low density polyethylene monomer resins before applying it to the paper surface. It is an object of the invention to produce the product of the present invention by co-extruding the low density polyethylene resin (monomer utilizing ethylene feed stock) with copolymer or terpolymer resins.
The present invention relates to a high strength poly one-side ream wrapper comprising paper arid copolymer and/or terpolymer resins. The copolymer and/or terpolymer resins comprise butene, hexene, and/or octene with ethylene or propylene in feed stocks. The copolymer and/or terpolymer resins are applied to a surface of the paper. It is an object of the present invention for the paper to be additionally coated with low density polyethylene monomer resins. It is an object of the present invention for the low density polyethylene resin to be a monomer utilizing ethylene feed stock.
The present invention relates to , method for hro~incin~ :. High strength poly one side teat" wrapper cotxtprising; co-extruding a low det,sitv polynhvlene resin with copolyttter or terpolymer resists onto a paper surface.
'L'he present invention relates to a method I:or prealociot~ :~ lti~h strength poly one ~icle ~-ean, wrapper comprising; Feeding a copolymer aocllor ~crp~lvme~' into an extruder tl.ie c:reWing an extrudate and then coating a paper sur'lauev wills ~;:~ic.l o~ctrudaie between a.
baclting roll and a chill roll. This Conns a poly coated p;tt,cr uNiil~ the:
copolymer and/or tcrpolymer coating.
The present invention relates to a method fur proclucing ,. I,i:rh Strength poly one side recent wrapper comprising; blending a low-density tnonotncr plycthylene resin with a copotyttter and/or tcrpolymer resin and feeding the ntixiorc: into att oxtruder die creating an ex.tntdate. The extrt~date is applied to a paper surface, betwec~~ a backing toll and a chill roll creating a poly coated paper wifih polyethy)ene n,onm,aer a.nd copolymer or tepolytner blended into the monomer.
The present invention relates to a method 'for producing a high strength poly one side ream wrapper comprising; coextruding a copolymer -,.u~d/or rc; n~~olymer with a polyethylene ntonomcr layer by feeding the copolymer and/cn- terpolymer layer and the polyctllylene monomer layer through a coextruder die fo.m,ity a uncxirudace.
The copoIyttter and/or terpolymer layer can be blended with a t~e,lycilwlenc tnonomcr. The coextrudate is applied to a surface of a paper wherein the cnpolynccr and/or terpoiymcr Iayer face the paper surface. the co-extntdate being applied 1~, t-ltc paper surface between a backing roll and a chill roll; creating a poly coated paper Ime-ing cme Layer of copolymer or terp~lytner and one layer oFpolyethylene monomer.
'The present invention relates to a high strength poly csnc slate ream wrapper comprising; a co-extruded poly coated paper having one lw~cr ur ~~sl~olymer and/or te~pulymer on top of the paper and one layer of polyethylem~ u~anc.~m~r on top of the copolymer or terpolymer layer. The copolymer and/or tey~olvuicr hyr can also contain polyethylene monomer.
The present invention further relates to a method for producing a lugh strength poly one side ream wrapper comprising; coextruding a copolymer and/or terpolymer layer with a polyethylene monomer layer by fecdinfi tl~e coha)ynoe r and/or tepolymer Iayer and the polyethylene monomer layer through a coextrudcr die to =onn a cocxtrudate. The copolymer and/or terpolymer layer cats 6e blenders with a polyEthylcne m:unomcr The coextrudate is applied to a paper surface wiU~ the polyethylene monomer facing the paper; the coextrudate applied to the paper surfaces: bciwcen 2 backing roll and a chill roll. This creates a poly coated paper with one layer of coholym.er or terpoly~ner and one layer of polyethylene monomer.
Tlo~ present invention relates to a high strength poly one side ream wrapper comprising; a co-extruded poly coated paper liaving one layer o.f polyellrylene monomez on top of a paper layer and a layer of copolymer or terpolymer on top of the polyethylene rr.onomer layer. 'fhe copolymer andlor terpolytner layer can he hler~decl with polyethylene monomer.
The present invention relates to a method for producir~~ a high strength poly one side ream wrapper c:o~nprising; coextn lding a layer of copolyner and/or terpolymer and a leyer ofpolyethylene monomer on each side of the copolymer atuilur terholymer layer by feeding the copolymer and/or terpolytner layer and the polyrthvleno monomer layers through a cncxt~uder die forming a coextrudatc. The copolyn~c~- and/or terpvlymer layer can. also contain polyethylene monomer. The coexlr~.olate is y>l>liefl to a paper surface so Lhat cme of the polyethylene monomer layers faces the paper by nrn«ing the coextrudate and the paper between a backing roll and a chill roll. 'this c~ cares a poly coated paper with one layer of copolymer or terpolymer between tivo layers of polyethylene monomer.
The present invention relates to a higli strength poly wnc sido ream wrapper Campri~ing; a poly coated paper having one layer of polyeil~y Iwc ~1701101I1Cr On top of a paper layer rollowed by a layer of copolymer or telPolymer having cm top of it a layer of polyelhyle,ne monomer. The copolymer and/or terpolymer lalyer can al.5o contain p«lyethyl.cnc monomer.
Brief Description of the T)rawings Fi cure 1 illustrates a process for forming a poly coated paper wish a cUpolymer and/or terpolymer coating.
I'igvre 2 illustrates a process for forming a poly coated paper with polyethylene monomer and copolymer and/or tcrpolymerbIended into the monomer.
Figure 3 illustrates a process for forming a coextruded poly cnaterl paper with one layer of copolymer or terpolymer and one layer of polyethylene tT~anomer_ Figure 4 illustrates the product rormed by the process off FiQUre 3_ Figtu-e ~ illustrates a process for forming a coexiruded poly coated p;rper with one layer o1-copolymer or terpolymer and one layer of polyethylene m~nc~mer.
Fiei~re 6 illustrates the product formed by the process rat Figure: ~.
F~'igure 7 illustrates a process for forniing a coextrtided poly ~aaic~:l paper with one layer of copolymer or tezpolymer between two layers o~f polyethylene nno.nomer.
Figure 8 illustrates the product formed by the process of Figure 7.
Figure 9 illustrates a process for forming a co-extruded poly coated paper with one layer of polyethylene monomer between two layers of copolymer and/or terpolymer resin.
Figure 10 illustrates the product formed by the process of Figure 9.
Detailed Description of the Invention In an embodiment of the present invention, the low density polyethylene resin is a monomer utilizing ethylene feed stock. The copolymer and terpolymer resins are made by combining butene, hexene and/or octene feedstock with ethylene or propylene feedstock.
In one embodiment shown in Figure l, the copolymer and terpolymer resins are applied to the paper surface. The copolymer and/or terpolymer 10 are fed into an extruder die 30 where it becomes extrudate 40. The extrudate 40 is coated on the paper 20 between the backing roll SO
and the chill roll 60 to form a poly coated paper with copolymer and/or terpolymer coating 70.
In a further embodiment shown in Figure 2, low-density monomer polyethylene resin 80 is mixed with copolymer and/or terpolymer resins 10 before or as being fed into an extruder die 30. The low-density polyethylene monomer and copolymer and/or terpolymer resin becomes extrudate 40. The extrudate 40 is applied to the paper surface 20 between the backing roll 50 and the chill roll 60. This creates a poly coated paper with polyethylene monomer and copolymer or terpolymer blended into the monomer 90.
In a further embodiment, shown in Figure 3, the copolymer and/or terpolymer layer 10 which may be blended with polyethylene monomer, is coextruded with a polyethylene monomer layer 80. The copolymer and/or terpolymer layer 10 and the polyethylene monomer layer 80 are fed through a coextruder die 130 to form coextrudate 140 wherein the coextrudate 140 has the copolymer and/or terl,olymcr 10 facing the paper 120. The co-extrudate 140 is applied to the paper st~rfo;c 12l) hetween the backing roll 50 a.nd the chill roll 60. This creates a poly coated paper l 7U with one layer of copolymer or te~polymer and one layer of polyethylene mwnc?mer.
Figure 4 shows the product made br~ the pi'()L;CSS S17U\Wl Jn k' i~w a 3 wherein the co-extruded poly coated paper 17U has one layer of copolymer or ~enpolytner 180 on top c~f the paper 12U aad nne layer of polyethylene monmncr 1 1 ~ I m~ tcala c~f layer 180.
In figure 5 the copolymer and/or teyolymer layer l.U ~vhlCh 11,a'~ be blended with a I,olyeU~ylenc monomer. is coextn~ded with a polyethylene nn_rnc,mcn Inyer R0. The copolytver and/or terpolymer Iayer 1 O and the polyethylene n,onrnt,cr layer 80 are fed through a coextruder die 130 to form coextrudate 140 wherein tUe c~~cxtnidate 140 has the polyethylene nuonomcr 80 facuig tJre paper 120. The cc~-c'xtmchne I 40 is applied to the paper surface 120 between the backing roll 50 and the c1; f l rot l C,O.
This creates a holy coated paper 170 with one layer of copolymer on terpolyn,cr ;mc.l cue layer of polyethylene »monomer.
Figure G shows product made by the process shown in Figure 5 wherein the co-c~:ti.-uded poly coated paper 170 has one layer of polyethylene monc>anerv 110 on top of paper lavcr I2U and layer 180 on top of layer 11U.
1n figure 7 the copolymer and/or terpolymer layer 1 t) w~f~i~:h n,yr 1,e blended with polyethylene monomer, is coextruded with a layer of polyetl~ylcroc monomer 80 on each si~:le. 'fhe copolymer and/or terpolymcr layer 10 and the polvethylewr rt,onon~er layers 80 are fed through a eocxtrudcr die 130 to form coexjrudate 1=tU wherein lze coe;xtruclatc 1~t0 has one of the polyethylene monomer layers 80 facing the l,at,m- I 20.
The co-ea;trudste 140 is applied to the paper surface 120 between floe ltorlr ink rc~li 50 anti the chill rril h(1. ~1'his creates a poly c:uated paper 210 with oue layer of col~c,lyn,er or terpolymer ht~,rwern two layers of polyethylene monomer.
Higure 8 shows the product made by the process simw.a io lyrnr~ 7 wherein the cc,-extruded poly canted paper 120 has one layer of pofyr:~lmlcne »» nuoner 110 on top of paper layer 120 followed by layer I80 having oz~ top of it o ~;e~cmr.l l:,vcx~
110.
In figure 9 the copolymer and/or terpolymer layer 10 which rnay be blended with pc~lycthylene monomer, is coextruded with a layer of Polyethylene m~oamer 80 on each si:le. The copolymer and/or tcrpolymer layer 10 and the palyethylrne rnonotner layers 80 arc .fed through a coextntdcr die 130 to form cocxtntdate 141) wherein tlae coextrudate 110 hits nrxc of tl7.e polyethylene manotner layers g0 fatcing 11~~ I>al,e~-1;%C~, The co-a}:trudaic 1.40 is applied to the papEr surface 120 between (1u~ ba.cl;ing roll 50 and the chill roll fit). 'f'his creates a poly coated paper 220 with cme layer ,ai'mp"~tym~:r or tcrpolyLner btatwccn two layers o1'polyethylenc monomer.
Cigure 10 shUWS the product made by the process sl~,nvo in I lyre 9 wherein the ec,-cxtmded poly coated paper 120 has one layer of holyelhvicnc monomer l 10 on top of paper layer 120 followed by layer 180 having on top of it a ,ecc,rr~l layer 11U.
By utilizing d7ese copolymer and/or terpolymer resins the l~r~~sent invention a.chicvas a. S1J175talltlal improvement in the tear strength ofthe: ream wrapper. Below are reSnltS 11SJI7~ the same 50# CanFor paper as above and f ~1 hc~mols c~f-~v,r»hined copolymer or terpolymer resin and Low density polyethylene monomer which .shows the significant st:-engtla gain versus the traditional low density polvetlnylrnc~ ~17,,wo :U,-we-Machine Direction r. 'rows Direction 'Dear 'Gear IO
i0f~ Canfior T'apcr ! 22 1'~
5(1# (,anfor Paper with 14# copolymer 196 240 ar~clior terpolymer resin or a blend of Ic,w density polyetlnylenc monomer resin and copolyzncr or terpolymcr resin or a coextn»icm of low density monomer polyethylene rein aaid copolymer and/or terpolymer resin Slrenath Ciain 1~1T.~ Tear test-'f APP1 T-414-units grams ot-lorcc C:D Tcar test-'~'APP1 T-414-LUiits grams of force a
Claims (19)
1. A high strength poly one-side ream wrapper comprising:
paper;
copolymer and/or terpolymer resins;
said copolymer and/or terpolymer resins comprising butene, hexene, and/or octene with propylene or ethylene in feed stocks;
said copolymer and/or terpolymer resins being applied to a surface of said paper.
paper;
copolymer and/or terpolymer resins;
said copolymer and/or terpolymer resins comprising butene, hexene, and/or octene with propylene or ethylene in feed stocks;
said copolymer and/or terpolymer resins being applied to a surface of said paper.
2. The product of claim 1 further comprising;
low density polyethylene monomer resins.
low density polyethylene monomer resins.
3. A method for producing a high strength poly one side ream wrapper comprising;
co-extruding a low density polyethylene resin with copolymer or terpolymer resins onto a paper surface.
co-extruding a low density polyethylene resin with copolymer or terpolymer resins onto a paper surface.
4. The method of claim 3 wherein the low density polyethylene is a monomer utilizing ethylene feed stock.
5. The method of claim 3 wherein the copolymer and terpolymer resins are made by combining butene, hexene and/or octene feedstock with ethylene or propylene feedstock.
6. A method for producing a high strength poly one side ream wrapper comprising; feeding a copolymer and/or terpolymer into an extruder die creating an extrudate;
coating a paper surface with said extrudate between a backing roll and a chill roll forming a poly coated paper with said copolymer and/or terpolymer coating.
coating a paper surface with said extrudate between a backing roll and a chill roll forming a poly coated paper with said copolymer and/or terpolymer coating.
7. A method for producing a high strength poly one side ream wrapper comprising;
blending a low-density monomer polyethylene resin with a copolymer and/or terpolymer resin;
feeding said mixture into an extruder die;
creating an extrudate;
applying said extrudate to a paper surface between a backing roll and a chill roll;
creating a poly coated paper with polyethylene monomer and copolymer or terpolymer blended into said monomer.
blending a low-density monomer polyethylene resin with a copolymer and/or terpolymer resin;
feeding said mixture into an extruder die;
creating an extrudate;
applying said extrudate to a paper surface between a backing roll and a chill roll;
creating a poly coated paper with polyethylene monomer and copolymer or terpolymer blended into said monomer.
8. A method for producing a high strength poly one side ream wrapper comprising;
coextruding a copolymer and/or terpolymer with a polyethylene monomer layer by feeding said copolymer and/or terpolymer layer and said polyethylene monomer layer through a coextruder die;
forming a coextrudate applying said coextrudate to a surface of a paper wherein said copolymer and/or terpolymer layer face said paper surface, said co-extrudate being applied to said paper surface between a backing roll and a chill roll;
creating a poly coated paper having one layer of copolymer or terpolymer and one layer of polyethylene monomer.
coextruding a copolymer and/or terpolymer with a polyethylene monomer layer by feeding said copolymer and/or terpolymer layer and said polyethylene monomer layer through a coextruder die;
forming a coextrudate applying said coextrudate to a surface of a paper wherein said copolymer and/or terpolymer layer face said paper surface, said co-extrudate being applied to said paper surface between a backing roll and a chill roll;
creating a poly coated paper having one layer of copolymer or terpolymer and one layer of polyethylene monomer.
9. The method of claim 8 further comprising:
blending said copolymer and/or terpolymer with a polyethylene monomer prior to said coextruding.
blending said copolymer and/or terpolymer with a polyethylene monomer prior to said coextruding.
10. A high strength poly one side ream wrapper comprising;
a co-extruded poly coated paper having one layer of copolymer or terpolymer on top of said paper and one layer of polyethylene monomer on top of said copolymer or terpolymer layer.
a co-extruded poly coated paper having one layer of copolymer or terpolymer on top of said paper and one layer of polyethylene monomer on top of said copolymer or terpolymer layer.
11. The high strength poly one side ream wrapper of claim 10 wherein said copolymer of terpolymer layer contains polyethylene monomer.
12. A method for producing a high strength poly one side ream wrapper comprising;
coextruding said copolymer and/or terpolymer with a polyethylene monomer layer by feeding said copolymer and/or terpolymer layer and said polyethylene monomer layer through a coextruder die:
forming a coextrudate;
applying said coextrudate to a paper surface with said polyethylene monomer facing said paper: said coextrudate applied to said paper surface between a backing roll and a chill roll;
creating a poly coated paper with one layer of copolymer or terpolymer and one layer of polyethylene monomer.
coextruding said copolymer and/or terpolymer with a polyethylene monomer layer by feeding said copolymer and/or terpolymer layer and said polyethylene monomer layer through a coextruder die:
forming a coextrudate;
applying said coextrudate to a paper surface with said polyethylene monomer facing said paper: said coextrudate applied to said paper surface between a backing roll and a chill roll;
creating a poly coated paper with one layer of copolymer or terpolymer and one layer of polyethylene monomer.
13. The method of claim 12 further comprising:
bending said copolymer and/or terpolymer with a polyethylene monomer prior to said coextruding.
bending said copolymer and/or terpolymer with a polyethylene monomer prior to said coextruding.
14. A high strength poly one side ream wrapper comprising:
a co-extruded poly coated paper having one layer of polyethylene monomer on top of a paper layer and a layer of copolymer or terpolymer on top of said polyethylene monomer layer.
a co-extruded poly coated paper having one layer of polyethylene monomer on top of a paper layer and a layer of copolymer or terpolymer on top of said polyethylene monomer layer.
15. The high strength poly one side ream wrapper of claim 14 wherein said copolymer or terpolymer layer contains polyethylene monomer.
16. A method for producing a high strength poly one side ream wrapper comprising;
coextruding a copolymer and/or terpolymer layer with a layer of polyethylene monomer on each side of said copolymer and/or terpolymer layer by feeding said copolymer and/or terpolymer layer and said polyethylene monomer layers through a coextruder die;
forming a coextrudate:
applying to a paper surface said coextrudate so that one of said polyethylene monomer layers faces said paper by running said coextrudate and said paper between a backing roll and a chill roll:
creating a poly coated paper with one layer of copolymer or terpolymer between two layers of polyethylene monomer.
coextruding a copolymer and/or terpolymer layer with a layer of polyethylene monomer on each side of said copolymer and/or terpolymer layer by feeding said copolymer and/or terpolymer layer and said polyethylene monomer layers through a coextruder die;
forming a coextrudate:
applying to a paper surface said coextrudate so that one of said polyethylene monomer layers faces said paper by running said coextrudate and said paper between a backing roll and a chill roll:
creating a poly coated paper with one layer of copolymer or terpolymer between two layers of polyethylene monomer.
17. The method of claim 16 further comprising;
blending said copolymer and/or terpolymer with a polyethylene monomer prior to said coextruding.
blending said copolymer and/or terpolymer with a polyethylene monomer prior to said coextruding.
18. A high strength poly one side ream wrapper comprising:
a poly coated paper having one layer of polyethylene monomer on top of a paper layer followed by a layer of copolymer or terpolymer having on top of it a layer of polyethylene monomer.
a poly coated paper having one layer of polyethylene monomer on top of a paper layer followed by a layer of copolymer or terpolymer having on top of it a layer of polyethylene monomer.
19. The high strength poly one side ream wrapper of claim 18 wherein said copolymer or terpolymer layer contains polyethylene monomer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/023,500 | 2001-12-17 | ||
| US10/023,500 US7297410B2 (en) | 2001-12-17 | 2001-12-17 | High strength ream wrap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2414630A1 true CA2414630A1 (en) | 2003-06-17 |
Family
ID=21815447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002414630A Abandoned CA2414630A1 (en) | 2001-12-17 | 2002-12-17 | High strength ream wrap |
Country Status (2)
| Country | Link |
|---|---|
| US (2) | US7297410B2 (en) |
| CA (1) | CA2414630A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040253469A1 (en) * | 2002-12-30 | 2004-12-16 | Arent Wendy L. | Static of COF differential poly film ream wrap |
| US9346216B2 (en) * | 2007-06-08 | 2016-05-24 | International Paper Company | Easy-opening ream wrap |
| US20110138753A1 (en) * | 2009-12-11 | 2011-06-16 | International Paper Company | Container with Repulpable Moisture Resistant Barrier |
| US9358576B2 (en) | 2010-11-05 | 2016-06-07 | International Paper Company | Packaging material having moisture barrier and methods for preparing same |
| US9365980B2 (en) | 2010-11-05 | 2016-06-14 | International Paper Company | Packaging material having moisture barrier and methods for preparing same |
| US8568842B2 (en) | 2010-12-28 | 2013-10-29 | International Paper Company | Film for wrapping, methods of making and using |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3230135A (en) * | 1964-03-10 | 1966-01-18 | Morton Int Inc | Process for coating paper using a polyimine precoat and products thereof |
| US4020215A (en) * | 1975-05-30 | 1977-04-26 | Crown Zellerbach Corporation | Extrusion of polyolefin onto paper at decreased temperatures |
| US4513036A (en) * | 1983-10-17 | 1985-04-23 | Champion International Corporation | Barrier laminates for containment of essential oils and flavors and cartons made therefrom |
| DE3716269C2 (en) * | 1987-05-15 | 1993-12-09 | Schoeller Felix Jun Papier | Waterproof substrate for light-sensitive materials |
| US5091261A (en) * | 1990-04-16 | 1992-02-25 | Westvaco Corporation | Paperboard/polymer laminate for blister pack |
| US5196269A (en) * | 1990-07-13 | 1993-03-23 | International Paper Company | Paperboard laminates having polar copolymer/nonpolar polymer blend surface coatings |
| US5250348A (en) * | 1991-12-09 | 1993-10-05 | International Paper Company | Improved wrapper paper for use in very low contact pressure applications |
| US5989724A (en) * | 1993-05-10 | 1999-11-23 | International Paper Company | Recyclable and repulpable ream wrap and related methods of manufacture |
| US5922441A (en) * | 1997-06-11 | 1999-07-13 | Tenneco Packaging Inc. | Stretch wrap films |
| US6087079A (en) * | 1998-10-26 | 2000-07-11 | Eastman Kodak Company | High speed lamination of paper and biaxially oriented sheet |
| US6586026B1 (en) * | 1999-03-18 | 2003-07-01 | Cryovac, Inc. | Package with contoured seal |
-
2001
- 2001-12-17 US US10/023,500 patent/US7297410B2/en not_active Expired - Fee Related
-
2002
- 2002-12-17 CA CA002414630A patent/CA2414630A1/en not_active Abandoned
-
2006
- 2006-10-10 US US11/548,154 patent/US20080026236A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US7297410B2 (en) | 2007-11-20 |
| US20080026236A1 (en) | 2008-01-31 |
| US20030113567A1 (en) | 2003-06-19 |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| FZDE | Discontinued |
Effective date: 20160216 |