Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3224574 A
Publication typeGrant
Publication dateDec 21, 1965
Filing dateJun 10, 1964
Priority dateJun 10, 1964
Publication numberUS 3224574 A, US 3224574A, US-A-3224574, US3224574 A, US3224574A
InventorsAlbert L Mcconnell, Edward M Kasinkas
Original AssigneeScott Paper Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Embossed plastic bag
US 3224574 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Dec. 2l, 1965 A. L. MOCQNNELL ETAL EMBOSSED PLASTIC BAG Filed June 10. 1964 INVENTORS. ALBERT L. MCCONNELL EDWARD M. KASINKAS ATTORNEY United States Patent O M 3,224,574 EMBOSSED PLASTEC BAG lhert lL. McConnell, Chester, and Edward M. Kasinkas, Lansdowne, Pa., assignors to Scott llaper Company, Philadelphia, la., a corporation of Pennsylvania Filed .inne 10, 1964, Ser. No. 374,030 3 Claims. (Cl. 20d-56) This invention relates to plastic bags and, more particularly, to embossed bags of a thermoplastic film such as polyethylene characterized by easy opening and liandiing obtained without any increase in use of material or production expense.

Household and food products are frequently packaged in bags manufactured from thermoplastic materials such as polyethylene, polypropylene, polyvinyl chloride, etc. At the present time, these bags are made either from a ring-die extruded tube or from a thermoplastic film folded upon itself. In both types of bag the packaging enclosure is defined by heat sealing. The bags are conventionally separated by weakened portions in the film.

The first type of bag or ring-die bag is in common use today. However, it suffers from certain shortcomings; for example, the bag is made from a continuous strip or tube; thus the opening of the bag is hard to distinguish because the front side and the back side of the bag are coequal in length. Opening the detached bag often requires pulling the two panels apart which is resisted by the mutual adhesion of the film and vacuum created in the bag as it is stored in rolled form. In use, this behavior often requires keeping a bag open and attempting to prevent its collapse while at the same time inserting an article to be packaged. In the event the bag collapses, the process has to be repeatedhopefully, this time, without the annoying adhesion and vacuum.

In the second type, or the folded bag, similar problems exist. The natural tendency of the film is to adhere to itself. Adding to it the fact that the rolled-up strip of bags has most of the air squeezed out, this ahesion presents a detrimental feature in the otherwise very acceptable packaging article.

Various attempts have been to alleviate this problem in the folded type of plastic bag. For example, bulkedup portions of the thermoplastic sheet are made to show, iirsi, where the opening of the bag lies and, second, to allow easy grasping and separation of the two panels. Othe'r attempts to alleviate this problem have been made by deforming the shorter edge of the bag opening by materially distorting the shorter lip causing a bulkedup appearance of the front panel. Despite all these steps the plastic bag is still a less than highly acceptable packaging container because the mere provision of an opening has not rectified the problems of mutual adhesion and vacuum in the interior of the bag which cannot be avoided if highly protective packaging is desired.

It has now been found that by a very simple and yet unexpected expedient all these problems can be eliminated without incurring concomitant expenses in additional material and/or processing. Thus, the invention is accomplished by providing a thermoplastic ba-g, preferably made of polyolefin film, and especially, polyethylene, and embossing this film to provide protrusions and depressions in the bag. These displacements of the material from the plane of the film, i.e., hills and valleys, or dimples, introduce and maintain an air layer between the sheets. Further, the elastic protrusions resist the complete expelling of air from the rolled-up strip of bags and this results not only in each individual bag being easily separable from the roll, but also in a bag allowing very easy opening and insertion of articles.

3,224,574 Patented Dec. 2l, 1965 ICC The production of this bag can be accomplished in this same manner as illustrated in U.S. application S.N. 169,192, now Patent No. 3,160,273. The embossing is accomplished as part of the film forming sequence; for example, in preparing the plastic material, molten polyethylene film is made to contact a chilled surface. Instead of using a conventional smooth surface, as is done in the prior art, the fast descending film is made to contact a cooled drum covered with wire or mesh or screen. At the point of the tangential contact of the film an air stream is directed perpendicularly to the moving film and drum. This variance in pressure causes the still pliable thermoplastic film to assume, to a degree, the configuration of the wire protrusions. By regulating the temperature of the impinging air, the temperature of the cooling drum, the height of the protrusions and rate of the extrusion various degrees of embossing may be obtained.

Varying the type of wire screen or mesh can be done to obtain various patterns with various depths and heights for the hills and valleys in the film. As can easily be envisioned, wire screens ranging from very coarse to very fine grids can be used in this operation to produce the desired degrees of embossing and aesthetic appeal. Also, with proper temperature control, various embossing patterns may be superimposed on each other.

In addition to these properties, the plastic bag presents a very pleasing sense of touch to the hand. Embossed film behaves somewhat like a stific yet resilient cloth. While this is obviously a subjective evalution, the novel bag still has a considerably more appealing handling quality or hand than the smooth film.

Referring now to the accompanying drawings:

FIGURE I is a plane view of the bag.

FIGURE II is a cross section of FIGURE I on the line 2 2.

FIGURE III is a perspective View of a roll of bags of the invention arranged to be dispensed from a container, one end of which has been removed for purposes of illustration.

FIGURE I shows the novel thermoplastic film 1, in this case, of the same material at the back as well as the front. Different bags may be made from different types of front and back panels joined together by a U seal around the periphery of the bag enclosure. The film in FIGURE I is shown to contain a folded-over lip for the front panel. In the drawing, an inner fold is illustrated. An equally good fold may be obtained by an outwardly folded lip. In order to obtain a more protected enclosure for the article to be packed, pressuresensitive adhesive may be applied to the extended lip. Generally, it will be a non-blocking adhesive, although slightly blocking adhesives may be used.

FIGURE II illustrates the protrusions or the hills and valleys of the front and back panels. These protrusions on each film 1 allow sufiicient air layer 3 to be maintained or introduced into the interior of the bag. The natural resiliency of the thermoplastic film reacts to restore this air layer between the two films in the event the bag is slightly unwound from the roll. Removing the bag from the roll or relieving the outside pressure when the bag approaches its dispensing turn results in the resilient action causing the somewhat compressed protrusions to expand. A dispensing container useful for the present roll of bags is shown in FIGURE III wherein a roll 5 of bags 6 is positioned within a container '7, one end of which is removed for purposes of illustration. Container 7 has an opening along one side thereof, one edge of which opening is formed by a metal cutting strip 8 secured to container 7 and arranged to serve as a means for severing individual bags 6 from roll 5. This coaction of resilience and air introduction is also an aspect of this invention.

Another beneiit obtained from the embossing is the increase in the recovery of the film when distorted under loading by the articles enclosed in the interior of the bag. Sharp objects are thus less likely to cause puncturing of the embossed thermoplastic ilm.

In the present invention, a Wide variety of thermoplastic materials can be used. An illustrative list of materials useful for the ilm includes polyethylene, both conventional and linear, nylon, polystyrene, polyoleins such as polypropylene, blends of polyethylene with polybutene, polyisobutylene, and polypropylene and polyesters, etc.

What is claimed is:

1. An article of manufacture in the form of a plastic bag suitable for inserting articles therein, said bag being comprised of a front panel and a rear panel, made of a thermoplastic material, said front panel made of the same sheet and folded upon the rear sheet, said front panel having a small lip, said front panel being optionally shorter than said rear panel, said panels being joined by heat and pressure distortion of the thermoplastic material along the lines necessary to define the outlines of a bag and, at the same time, providing an opening for insertion of articles in the interior of said bag, said thermoplastic sheet material possessing a plurality of protrusions and depressions resembling hills and valleys distributed throughout the sheet, said hills and valleys introducing a resiliency in the film capable of preventing the adhesion of the said front and rear panels and concomitant creation of vacuum, said adhesion being prevented by the resilient maintenance in a spaced-apart relationship of the front and rear panels in the thermoplastic ilm of said bag.

Z. An article of manufacture according to claim 1 wherein bags are in the form of a strip, said strip being rolled up and said bags being torn from the strip dispensed from a container.

3. An article of manufacture according to claim 1 whrein the thermoplastic material is polyethylene.

References Cited by the Examiner UNITED STATES PATENTS 2,778,173 1/ 1957 Taunton. 2,890,822 6/1959 Lee et al 206-58 2,917,223 12/1959 Le Bolt et al. 3,045,891 7/1962 Alvarez 229-69 3,113,715 12/1963 Pangrac 229--53 JOSEPH R. LECLAIR, Primary Examiner.


D. M. BOCKENEK, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2778173 *Aug 24, 1951Jan 22, 1957Wilts United Dairies LtdMethod of producing airtight packages
US2890822 *Apr 20, 1956Jun 16, 1959Dow Chemical CoDispensing container for rolls of sheet wrapping material
US2917223 *Oct 19, 1955Dec 15, 1959Cromwell Paper CoNon-slip bag
US3045891 *Sep 11, 1959Jul 24, 1962A Aba Cellophane Products CorpContinuous envelopes
US3113715 *Feb 3, 1961Dec 10, 1963Dow Chemical CoAnti-block edge for plastic bags and the like
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3283992 *Feb 10, 1965Nov 8, 1966Union Carbide Canada LtdEmbossed anti-skid bags
US3348762 *Jul 22, 1966Oct 24, 1967Scott Paper CoHousehold bag construction
US3393861 *Nov 29, 1966Jul 23, 1968Mobil Oil CorpEmbossed thermoplastic bags
US3405861 *Apr 3, 1967Oct 15, 1968L D Schreiber Cheese Company ISealed package
US3411698 *Sep 9, 1966Nov 19, 1968Reynolds Metals CoBag-like container means
US3495761 *Apr 16, 1968Feb 17, 1970Hudson Pulp & Paper CorpEmbossed kraft paper and paper bags made therefrom
US3590990 *Mar 21, 1969Jul 6, 1971Rubin DavidRolled garment holding bag material
US3760940 *Jul 2, 1971Sep 25, 1973Mobil Oil CorpMethod of embossing thin, limp plastic film, and disposable and embossed plastic bag product
US3979050 *Aug 11, 1975Sep 7, 1976Union Carbide CorporationMulti-ply film articles
US4001950 *Mar 12, 1973Jan 11, 1977Testa-Laboratorium A/SResuscitation training apparatus
US4084265 *Jul 21, 1976Apr 18, 1978Landstingens Inkopscentral, Lic, Ekonomisk ForeningProtective glove
US4595138 *Jan 28, 1985Jun 17, 198621St Century Envelope Co., Inc.Two-way envelope
US4904092 *Oct 19, 1988Feb 27, 1990Mobil Oil CorporationRoll of thermoplastic bags
US5531393 *Jun 3, 1994Jul 2, 1996Salzsauler; Donald J.Stretch film
US5554093 *May 30, 1995Sep 10, 1996Dowbrands L.P.Flexible thermoplastic containers having a visual pattern thereon
US5618111 *May 15, 1996Apr 8, 1997Dowbrands L.P.Flexible thermoplastic containers having visual pattern thereon
US5658077 *Mar 14, 1995Aug 19, 1997Hoftman; Moshe M.Sponge counting bag
US5706961 *Oct 3, 1994Jan 13, 1998Morano; Emanuel P.Nurser liner with textured tabs
US6150647 *Jun 18, 1999Nov 21, 2000The Procter & Gamble CompanyFlexible, cushioned, high surface area food storage and preparation bags
US6394651Jun 18, 1999May 28, 2002The Procter & Gamble CompanyFlexible bags having enhanced capacity and enhanced stability in use
US6394652Jun 18, 1999May 28, 2002The Procter & Gamble CompanyFlexible bags having stretch-to-fit conformity to closely accommodate contents in use
US6581764 *Jun 26, 2000Jun 24, 2003Cory HillebrandConvenient, disposable article for food packaging
US6612473Mar 11, 1999Sep 2, 2003The Procter & Gamble CompanyAsymmetrical end-loadable carton for rolled sheet materials
US7022058Feb 21, 2002Apr 4, 2006Tilia International, Inc.Method for preparing air channel-equipped film for use in vacuum package
US7087130Mar 4, 2004Aug 8, 2006Tilia International, Inc.Method for manufacturing a sealable bag having an integrated zipper for use in vacuum packaging
US7138025Mar 4, 2004Nov 21, 2006Tilia International, Inc.Method for manufacturing a sealable bag having an integrated tray for use in vacuum packaging
US7220053Dec 14, 2004May 22, 2007Sunbeam Products, Inc.Flexible composite bag for vacuum sealing
US7290660Jul 20, 2005Nov 6, 2007Tilman Paul AStorage system having a disposable vacuum bag
US7517484Mar 15, 2004Apr 14, 2009Sunbeam Products, Inc.Forming evacuation channels during single and multi-layer extrusion process
US7534039Jul 19, 2005May 19, 2009Sunbeam Products, Inc.Vacuum packaging films patterned with protruding cavernous structures
US7578320May 4, 2006Aug 25, 2009The Glad Products CompanyFlexible storage bag
US7625459Jun 30, 2006Dec 1, 2009Sunbeam Products, Inc.Method for manufacturing liquid-trapping bag for use in vacuum packaging
US7726880Jun 29, 2004Jun 1, 2010The Glad Products CompanyFlexible storage bag
US7784160Jun 15, 2007Aug 31, 2010S.C. Johnson & Son, Inc.Pouch and airtight resealable closure mechanism therefor
US7857514Dec 12, 2006Dec 28, 2010Reynolds Foil Inc.Resealable closures, polymeric packages and systems and methods relating thereto
US7857515Jun 15, 2007Dec 28, 2010S.C. Johnson Home Storage, Inc.Airtight closure mechanism for a reclosable pouch
US7874731Jun 15, 2007Jan 25, 2011S.C. Johnson Home Storage, Inc.Valve for a recloseable container
US7886412Mar 16, 2007Feb 15, 2011S.C. Johnson Home Storage, Inc.Pouch and airtight resealable closure mechanism therefor
US7887238Jun 15, 2007Feb 15, 2011S.C. Johnson Home Storage, Inc.Flow channels for a pouch
US7942577Dec 12, 2006May 17, 2011The Procter & Gamble CompanyFlexible bag having a drawtape closure
US7946766Jun 15, 2007May 24, 2011S.C. Johnson & Son, Inc.Offset closure mechanism for a reclosable pouch
US7967509Jun 15, 2007Jun 28, 2011S.C. Johnson & Son, Inc.Pouch with a valve
US8176604Jul 23, 2010May 15, 2012S.C. Johnson & Son, Inc.Pouch and airtight resealable closure mechanism therefor
US8231273Dec 17, 2010Jul 31, 2012S.C. Johnson & Son, Inc.Flow channel profile and a complementary groove for a pouch
US8419279Aug 4, 2009Apr 16, 2013The Glad Products CompanyFlexible storage bag
US8689526Nov 3, 2011Apr 8, 2014Jeffrey RabieaSystem and method for facilitating opening of plastic bags
US8794835 *Aug 26, 2010Aug 5, 2014The Glad Products CompanyDraw tape bag
US8827556Dec 16, 2010Sep 9, 2014S.C. Johnson & Son, Inc.Pouch and airtight resealable closure mechanism therefor
US8876382 *Aug 26, 2010Nov 4, 2014The Glad Products CompanyEmbossed draw tape bag
US20080292222 *May 12, 2008Nov 27, 2008The Glad Products CompanyDisposal bag having embossed tie flaps
US20110044566 *Feb 17, 2010Feb 24, 2011The Glad Products CompanyBag
US20110052104 *Aug 26, 2010Mar 3, 2011The Glad Products CompanyDraw tape bag
US20110052105 *Aug 26, 2010Mar 3, 2011The Glad Products CompanyEmbossed draw tape bag
US20120134606 *Jan 31, 2012May 31, 2012Borchardt Michael GNon-Continuously Laminated Multi-Layered Bags With Ribbed Patterns And Methods of Forming The Same
US20120269465 *Apr 24, 2012Oct 25, 2012The Glad Products CompanyThermoplastic Films With Visually-Distinct Stretched Regions and Methods For Making The Same
US20120269466 *Apr 24, 2012Oct 25, 2012The Glad Products CompanyMulti-Layered Films With Visually-Distinct Regions and Methods of Making The Same
US20130192712 *Mar 13, 2013Aug 1, 2013The Glad Products CompanyFlexible storage bag
US20130243982 *Mar 15, 2013Sep 19, 2013The Glad Products CompanyDiscontinuously laminated film structures with improved visual characteristics
DE3437414A1 *Oct 12, 1984Apr 24, 1986Nordenia KunststoffeProcess and device for improving the non-slip property of plastics films
EP2080706A1 *Jan 16, 2008Jul 22, 2009SŁdpack Verpackungen GmbH & Co. KGBag chain
U.S. Classification242/160.1, 229/69, 206/820, 206/389, 383/35
International ClassificationB65D83/08, B65D33/00, B65D85/672
Cooperative ClassificationB65D33/007, B65D85/672, Y10S206/82, B65D83/0882
European ClassificationB65D33/00G, B65D83/08D1D