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Publication numberUS2979246 A
Publication typeGrant
Publication dateApr 11, 1961
Filing dateMay 7, 1956
Priority dateMay 7, 1956
Publication numberUS 2979246 A, US 2979246A, US-A-2979246, US2979246 A, US2979246A
InventorsArthur S Liebeskind
Original AssigneeLord Baltimore Press Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Foam plastic coated carton
US 2979246 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

April 1.1, 1961 Filed May '7, 1956 A. S. LIEBESKIND 2 Sheets-Sheet x INVENTOR Arf/zur 5. Debes/rma' ATTORNEY i April 11, 1961 A.. s. LIEBEsKlND FOAM PLASTIC COATED CARTON 2 Sheets-Sheet 2 Filed May '7, 1956 r NVENTOR A ORNEY Arf/ruff. L/lebes/r/hd United States Patent O FOAM PLASTIC `COATED CARTON Arthur S. Liebeskind, Baltimore, Md., assignor, by mesne assignments, to The Lord Baltimore Press, Incorporated, New York, N.Y., a corporation of Maryland (1959) Filed -May 7, 1956, Ser. No. 583,183

3 Claims. (Cl. 229-14) The present invention relates to lan improved package and more particularly to an improved cushioned container.

Relatively thick or multiple layer package walls are presently used in several important packaging methods. Thus, some packages are provided with .a resilient padding, such as a sponge rubber padding, to -provide for a shock-resistant package and others are provided with relatively thick cellular-type wall coatings to form an insulated package. These resilient pads or coatings are now formed separately and are thereafter applied in their final form to the carton walls.

Other -presently known types of cartons use multi-layer walls to obtain a relatively :shock-proof package. In these presently known multi-layer wall packages, a single complex carton blank is cut for a subsequent involved folding operation to provide the multi-walled container or two separate -blanks are used and they are separately folded and are then fitted together.

The present invention discloses the use of a`relatively simple and effective foam-type resilient pad or cellular coating on a carton blank.

In the typical carton manufacturing process, -sheets of suitable paperboard are tirst decorated by a suitable printing or other means. scored according to the carton design to form at blanks. The at blanks are next partially folded and glued so that they are ready for filling with the packaged product. The filling step may be done by machine or hand. Where cushioning or insulation is required, separate steps are at present required to attach the padding or insulation to the cartons or to -fold vand insert a liner means. The present invention provides the -cushioning or insulating layer as a related step in the initial carton blank formation.

An object of the present invention is to provide an improved cushioned or insulated package.

Another object of the present invention is to provide a speedily and simply formed resilient coating for folded cartons.

Another object of the present invention is to provide Thereafter the sheets are cut :and

Fig. 3 is a sectional View taken along line 3-3 of Fig. 2;

Fig. 4 is a top plan view of a carton blank having resilient cushions thereon formed according to the present invention;

IFig. 5 is lan enlarged fragmentary elevational view showing the original and iinal shapes of a typical foaming plastic applied to a carton blank in accordance with the present invention;

Fig. 6 is ya perspective view of a folded carton having resilient cushions formed on its outer surface in laccordance with the present invention;

Fig. 7 is a diagrammatic view illustrating means for performing the method of the present invention;

Fig. 8 is a cross sectional View of the plastic application nozzle taken along the line 8-8 of Fig. 7; and

Fig. 9 is a diagrammatic view of another embodiment of a means for performing the method of the present invention.

Fig. 1 shows a folded carton 1 having resilient foam plastic cushions 2 for-med in place on the carton walls by means of the method of the present invention. The cushions 2v have a cellular or sponge-like characteristic, as will be more fully explained below, which results in a resilient cushion capable of providing `a shock-proof mounting lfor a glass container 3 -as shown in Figs. 2 and 3 or any other fragile article. The cushions 2 also provide an effective insulating medium due to the large number of air pockets therein which are characteristic of the an efficient and easily formed insulated folding carton.

Other and further objects of the invention will be obvious upon fan understanding of the illustrative embodiment about to be described, or will be indicated in the appended claims, and various advantages not referred to herein will occur to one skilled in the ait upon employment of the invention in practice. y

A preferred embodiment of the invention has been chosen for purposes of illustration and description and is shown in the accompanying drawings, 'forming a part of the specification, wherein:

Fig. 1 is a perspective view partially cut away of a folded carton having resilient cushions formed in accordance with the present invention;

Fig. 2 is a top plan view in section of a carton similar to that of Fig. 1 having a container fitted therein;

foam plastic cushions.

The method of forming the foam plastic cushions 2 will now be described with particular reference to Figs. 4, 5, and 7. l

At the right end of Fig. 7 a stack of carton blanks 4 is indicated at 5 in a suitable support 6. These carton blanks 4 are ready for their initial folding and gluing steps and the carton blanks 4 thus have been suitably decorated, cut, and scored. Before the blanks 4 are folded and glued, they are fed onto the conveyor 7 by an intermittent feed 8 for the application of the resilient foam plastic cushions 2 in accordance with the method of the present invention.

The conveyor 7 has a suitable intermittent drive which advances a carton blank 4 to a position indicated at 9 beneath the foam plastic applicator 10 each time vthat it operates. As a carton 4 is lmoved to point 9,theV control Valve 11 of applicator 10 is opened to apply a spot 12 of foaming plastic to the carton 4 in a shape controlled by the pattern 14 and at a depth determined by the on period for the control valve 11. i

A known method of producing the unexpanded Ifoam from commercially available components for its initial application to the blank 4 is indicated generally at 10.

A suitable polyester is placed under pressure in a first tank 15 and a catalystrsuch as a liquid diisocyanate is placed in a second tank 16 under pressure. The outputs of the tanks 15 and 16 `are metered by suitable adjustable valves 17 and are mixed in la mixing chamber 18 at once a spontaneous foaming action occurs whichy causes the applied mixture to expand upwardly from a relatively thin layer 12 (Fig. 5) to form the relatively thick sponge-like plastic cushion 2. The foaming action of the polyurethane type of foam is speeded by heat 3 which is applied by a suitable source such as heat lamps 19. After cushions 2 of a suitable shape and arrangement have been formed on the blanks 4, the carton is fed continuously into regular folding and gluing machinery for the regular package forming steps.

Foaming types of plastic are well known, and any of the known types may be utilized in place of the above described chemically foamed types. It is characteristic of nearly all of these foamed plastics, including the polyurethanes, that they have adhesive qualities with respect to typical paperboard materials so that they adhere tightly to the carton blank after the termination of the foaming action.

The shape of the cushion 2 formed on the carton blanks 4 may be controlled by a suitably shaped nozzle or pattern 14. Thus round, square, or generally rectangular cushions may be directly applied by suitably shaped nozzles. Where an irregular or more complicated shape is desired, a hollow cone-type pattern may be used to direct the spray or low of the plastic foam. The pattern shown in Figs. 7 and 8 has a heart-shaped cross section to form a finished cushion having a heart shape as shown at in Fig. 6. The carton 21 shown in Fig. 6 has the foam plastic cushions formed on the outside where they may provide the dual function of decorating the carton in an unusual and attractive manner and at the same time provide a protective cushioning effect.

In Fig. 9 a heated mold 22 is shown being used to control and shape the expansion of foamed plastic cushions 24. The mold 22 has suitable cutouts 25 to control the cushion shapes and has a heater 26 in the vicinity of the cutouts to warm them to assist in the expansion of the foam plastic. A suitable drive 27 on the frame 28 raises and lowers the mold 22 to allow for the positioning and removal of the blanks 29 by the conveyor 30. In Fig. 9 the blank 29a has unexpanded foam plastic coatings 24a thereon before it is admitted to the mold. The blank 29b is in position beneath the mold 22 and the cushions 24b lare Shown in their partially expanded position before they completely till the mold cutouts 25. The blank 29 to the left of the mold 22 has the completely expanded cushions 24. Any of the commonly known heat expanded plastics are suitable for use with the method using the mold 2.2. One such foaming plastic is expandable polystyrene, which is polystyrene beads with a heat-activated foaming agent added. These are available commercially and one suitable polystyrene bead is Dylite of the Koppers Company, Inc., of Pittsburgh, Pennsylvania. An adhesive coating is rst applied to the carton blank 29 and the beads are then dusted onto the adhesive in the amount and pattern desired.

Fig. 4 shows a plan view of a carton blank 4 such as is formed by either of the above-described methods having resilient cushions 2 on its various llaps and panels. The cushions 2 are positioned on the blank 4 so that they take the desired positions in the subsequent gluing and folding operations to support or insulate the carton contents such as the bottle 3 shown in Figs. 2 and 3.

The properties of the cushions formed may be readily varied by changing the proportions of the plastics and the foaming agents. Thus, by increasing the proportion of the diisocyanates in the urethanes or the foaming agent in the polystyrene beads a lighter, more porous and more exible cushion is obtained.

The position of the steps may be varied as desired and as convenient. Thus, the cushions may be formed at any point in the manufacture of the carton blanks and they may even be formed after the package is completed. The carton 21 shown in Fig. 6, for example, may have one or all of the cushions 29, 30, or 31 formed after the carton is set up and closed as shown.

It will be seen that the present invention provides an improved cushioned or insulated carton. The formation of the cellular cushions is relatively simple and is rapidly accomplished by the addition of a few simple steps as a part of the carton manufacturing process. The cushions may be formed in a variety of shapes and thicknesses by simple changes in the mixtures of the foam plastic ingredients or the thickness of their application to the carton blank. Cushioned or insulated cartons are provided at a relatively small cost as conventional single-wall folded containers are used and they are handled on regular carton blank automatic machinery with slight changes to provide for the application of the foam plastic.

As various changes may be made in the form, construction and `arrangement of the parts herein without departing from the spirit and scope of the invention and without sacrificing any of its advantages, it is to be understood that all matter herein is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim:

1. A flat unfolded carton blank of fibrous sheet material cut and scored to provide a plurality of panels adapted for erection as an article carton comprising the combination of a plurality of at least unfoamed cushions on the inner face of a plurality of its panels, cach unfoamed cushioned panel being only partially covered by its unfoamed cushion and said unfoamed cushions being adapted to cooperate to provide article holding foamed cushions in the erected carton, said unfoamed cushions each comprising a body of foam-type plastic in an at least partially unfoamed condition whereby said unfoamed cushions may be expanded by causing the plastic to foam at any time subsequent to the application of the plastic to the carton blank panels.

2. The blank as claimed in claim 1 in which the foamtype plastic comprises a heat foamed plastic and the foam-type plastic is applied at a temperature below the foaming temperature.

3. The blank as claimed in claim 1 in which said foam-type plastic comprises polystyrene beads incorporating a compressed gas blowing agent.

References Cited in the tile of this patent UNITED STATES PATENTS 848,889 Fitzgerald Apr. 2, 1907 1,791,367 Me Vay et al. Feb. 3, 1931 1,792,627 Bowersock Feb. 17, 1931 1,816,321 Foss July 28, 1931 2,217,137 Roth etal Oct. 8, 1940 2,339,142 Bodle et al Jan. 1l, 1944 2,552,641 Morrison May 15, 1951 2,598,127 Keckler May 27, 1952 2,716,074 Mick et al. Aug. 23, 1955 2,770,406 Lane Nov. 13, 1956 2,779,689 Reis Jan. 29, 1957 2,780,350 Simon et al Feb. 5, 1957 2,785,739 McGregor Mar. 19, 1957 2,822,573 Wasniewski Feb. 11, 1958 2,860,768 Smithers Nov. 18, 1958

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US848889 *Sep 18, 1906Apr 2, 1907Crouch & FitzgeraldPacking-case.
US1791367 *Apr 11, 1929Feb 3, 1931Buffalo Box FactoryContainer
US1792627 *Oct 20, 1928Feb 17, 1931Rochester Folding Box CompanyPacking case
US1816321 *May 9, 1929Jul 28, 1931Foss Orlando WCollapsible padded box
US2217137 *Jun 3, 1938Oct 8, 1940Theodore D HinchcliffeMethod of making floor coverings, table coverings, and the like
US2339142 *Aug 3, 1940Jan 11, 1944Mishawaka RubberCarpet underlay or the like and method of making same
US2552641 *Jan 12, 1946May 15, 1951Willard L MorrisonHeat insulated container having foamed plastic insulation
US2598127 *Jul 21, 1949May 27, 1952Ohio Commw Eng CoMethod of preparing sponge rubber and products produced thereby
US2716074 *Aug 20, 1951Aug 23, 1955Dow Chemical CoMethod of coating paper with crystalline sarans
US2770406 *Jun 28, 1954Nov 13, 1956St Regis Paper CoCarton construction
US2779689 *Jul 19, 1955Jan 29, 1957Pittsburgh Plate Glass CoForming foamed polyurethane resins
US2780350 *Dec 11, 1951Feb 5, 1957Lockheed Aircraft CorpPackage with cellular plastic packaging means
US2785739 *Aug 11, 1955Mar 19, 1957Mobay Chemical CorpPolyurethane cushions
US2822573 *Jan 17, 1955Feb 11, 1958Nat Automotive Fibres IncMethod and apparatus for producing foam rubber slabs or contoured pads
US2860768 *Aug 23, 1954Nov 18, 1958V L Smithers Mfg CompanyPackaging of fragile objects
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3070281 *Nov 2, 1960Dec 25, 1962Sonoco Products CoFoam coated paper tube
US3121525 *Nov 7, 1960Feb 18, 1964West Virginia Pulp & Paper CoPackage wrapper
US3130895 *Nov 30, 1961Apr 28, 1964Equitable Paper Bag CoBook mailer
US3131240 *Nov 9, 1960Apr 28, 1964Grace W R & CoProtective padding
US3161339 *Jun 27, 1960Dec 15, 1964Standard Plastics IncCarton for resiliently supporting articles
US3164251 *Oct 18, 1960Jan 5, 1965Pillsbury CoTightly bundled package assemblage and method of packaging
US3179227 *Jan 10, 1963Apr 20, 1965Brown William RTyping aid
US3186541 *Dec 12, 1962Jun 1, 1965Waldorf Paper Prod CoClock packages
US3231079 *Jul 28, 1964Jan 25, 1966Du PontPackage
US3249033 *Sep 25, 1962May 3, 1966Minnesota Mining & MfgCartridge for light-sensitive material
US3266705 *Jan 11, 1965Aug 16, 1966Republic Packaging CorpCushioned box
US3276900 *Jul 23, 1962Oct 4, 1966Du PontFoam coated paper substrate and process of making same
US3285795 *Jun 18, 1962Nov 15, 1966Stein Stefan MHeat curable plastic sheets and laminates
US3286825 *Sep 28, 1964Nov 22, 1966Laas Robert FArticle of manufacture and the method of packaging
US3301927 *Aug 7, 1964Jan 31, 1967Gen Dynamics CorpMethod of molding a high strength, low density structure
US3326443 *Jul 19, 1965Jun 20, 1967Dow Chemical CoEgg carton
US3336721 *Apr 5, 1965Aug 22, 1967Allison James HMethod for wrapping articles in a package
US3344973 *Apr 21, 1966Oct 3, 1967Charles E StudenLined container
US3396062 *Jul 27, 1964Aug 6, 1968Sweetheart PlasticsMethod for molding a composite foamed article
US3432328 *Jun 7, 1965Mar 11, 1969Fox River Paper CorpRaised printing
US3445553 *Mar 7, 1966May 20, 1969James S HardiggMethod of making a shock isolator element for cushioned container unit
US3471305 *Jun 13, 1966Oct 7, 1969Union Carbide CorpPackaging of shirred food casings and package
US3511017 *Mar 1, 1968May 12, 1970Grace W R & CoFoamable capsules
US3572574 *Feb 24, 1969Mar 30, 1971Evans Bellhouse LtdPackaging
US3775842 *Aug 16, 1972Dec 4, 1973Atomic Energy CommissionMethod for centering and restraining coils in an electromagnet
US3793121 *Dec 14, 1971Feb 19, 1974United States Banknote CorpMethod and apparatus for manufacturing mitts
US3995554 *Jun 3, 1974Dec 7, 1976Xerox CorporationProcess for preparing resilient blown imaged printing masters
US4314638 *Apr 2, 1981Feb 9, 1982International Paper CompanyShipping container designed to prevent can damage due to chime ride
US4339039 *Jul 25, 1980Jul 13, 1982First National Packaging Co., Inc.Impact resistant foam cushioned packages
US4376558 *Mar 25, 1981Mar 15, 1983Beverly BandarThermal retention container
US4390337 *Nov 24, 1981Jun 28, 1983Sealed Air CorporationApparatus having an automatic foam dispensing system for forming shock-absorbing members in a container
US4461222 *Jan 20, 1982Jul 24, 1984Fichet-BaucheInstallation for protection against break-ins
US4497859 *Oct 14, 1983Feb 5, 1985Lonza Ltd.Insulating insert for storage or transportation container
US4584822 *Mar 7, 1984Apr 29, 1986Sealed Air CorporationMethod of packing objects and packing therefor
US4602715 *Nov 8, 1983Jul 29, 1986Aero Mayflower Transit Company, Inc.Shipping container for electronic components
US4612967 *Feb 14, 1985Sep 23, 1986Kamen Christopher RPadded car cover
US4699192 *Sep 22, 1986Oct 13, 1987Kamen Christopher RPadded car cover
US4709817 *Feb 10, 1986Dec 1, 1987Viking Container CompanyContainer and protective insert for shock sensitive devices
US4729256 *Jan 15, 1987Mar 8, 1988Kelson Arnold AHandlebar grip and assembling facilitating strip
US4759891 *Nov 10, 1986Jul 26, 1988Sealed Air CorporationMethod and apparatus of foam molding packaging using a vertical mold
US4761257 *Nov 5, 1986Aug 2, 1988Sealed Air CorporationMethod and apparatus for foam molding packaging using a staged vacuum
US4851167 *Sep 14, 1987Jul 25, 1989Clint, Inc.Molding process and apparatus
US4851286 *Dec 12, 1988Jul 25, 1989United Foam PlasticsFoamed plastic cushioning materials
US4880119 *Jun 24, 1988Nov 14, 1989Simon B KennethCushioned container for hazardous material
US4899888 *Jun 27, 1988Feb 13, 1990Packaging Service Corporation Of KentuckyAdjustable packing carton for transportation of rectilinear articles
US4953705 *Jan 23, 1989Sep 4, 1990Psychopax LimitedPackage having detent-engaged cushioning lining
US4964529 *Jun 30, 1989Oct 23, 1990Houston Robert SGas tank container
US5445315 *Apr 1, 1994Aug 29, 1995John R. SextonInsulated beverage receptacle holder
US5553708 *Jun 5, 1995Sep 10, 1996Bethlehem Apparatus Co., Inc.Packaging for shipping spent fluorescent lamps
US5573119 *May 26, 1994Nov 12, 1996Luray; Howard L.Shock absorbing shipping package
US5702666 *May 24, 1995Dec 30, 1997Yoshida Kogyo Co., Ltd.Method for making sheet button panel assembly
US5762852 *Aug 2, 1994Jun 9, 1998Hettinga; SieboltProcess for making molded-in lamina hinge
US5865312 *Jul 17, 1996Feb 2, 1999Alfacel S.APackaging of shirred food casing
US5909806 *Oct 7, 1996Jun 8, 1999Fischel; HaroldLaptop carrying case
US5975300 *Jun 26, 1997Nov 2, 1999Gale; Gregory W.Shipping carton for glass bottles and pulp inserts for use therein and combination thereof
US6000545 *Oct 2, 1998Dec 14, 1999Smith; Steven H.Foldable packaging device for protecting articles within a box and the like
US6530480 *Oct 5, 2000Mar 11, 2003Osram Sylvania, Inc.Overpack carton
US6904734Nov 22, 2002Jun 14, 2005Osram Sylvania Inc.Method for packing a primary shipping case
US7134404 *Jan 21, 2004Nov 14, 2006Margaret SloneShelter for small animals and pets
US7264121 *May 1, 2003Sep 4, 2007Kao CorporationArticle holder
US7565974 *Aug 21, 2007Jul 28, 2009Adams Jr A StanleyBottled beverage holding luggage
US7712202 *Aug 17, 2007May 11, 2010Allpax Products LlcRetort basket securing system
US7866478 *Jan 11, 2011Apple Inc.Packaging for an article
US7882954Feb 8, 2011Sealed Air Corporation (Us)Packaging assemblies and method of fabricating same
US8234844Aug 7, 2012Sealed Air Corporation (Us)Packaging assemblies and method of fabricating same
US8499956May 15, 2008Aug 6, 2013Itb Packaging LlcCellular container
US9169059 *Oct 15, 2013Oct 27, 2015Suzhou Synta Optical Technology Co., Ltd.Container for housing optical instruments
US20030057128 *Nov 22, 2002Mar 27, 2003Osram Sylvania, Inc.Overpack carton
US20030217947 *May 1, 2003Nov 27, 2003Kao CorporationArticle holder
US20040149236 *Jan 21, 2004Aug 5, 2004Margaret SloneShelter for small animals and pets
US20080000067 *Aug 17, 2007Jan 3, 2008Allpax Products LlcRetort Basket Securing System
US20080029423 *Aug 1, 2006Feb 7, 2008Anthony Orkin DavlinPackaging assemblies and method of fabricating same
US20080035517 *Aug 1, 2007Feb 14, 2008Ngk Insulators, Ltd.Tray for brittle columnar body
US20090050429 *Aug 21, 2007Feb 26, 2009Adams Jr A StanleyBottled beverage holding luggage
US20090173649 *Aug 26, 2008Jul 9, 2009Chieh Hua LIAOBendable multi-sectional cushioning cover bag
US20090230016 *Mar 13, 2008Sep 17, 2009Apple Inc.Packaging for an article
US20110023415 *Feb 3, 2011Sealed Air CorporationPackaging Assemblies And Method Of Fabricating Same
US20110127189 *Jun 2, 2011Liao, Chieh HuaBendable multi-sectional cushioning cover bag
US20120103864 *Nov 2, 2010May 3, 2012International Business Machines CorporationIntegrated packing and shipping materials within servers and data storage machines
US20130000257 *Jul 2, 2012Jan 3, 2013Waltrip Mark ABottle holder and related methods
US20140166520 *Jul 19, 2012Jun 19, 2014Sanofi-Aventis Deutschland GmbhShock Absorbing Lining for a Transport Container
US20150101947 *Oct 15, 2013Apr 16, 2015Dar-Tson SHENContainer for housing optical instruments
EP1344637A1 *Feb 25, 2003Sep 17, 2003AllardiMethod of making a packaging product
EP2301854A1 *Sep 6, 2010Mar 30, 2011Cofresco Frischhalteprodukte GmbH & Co. KGContainer with retaining means for its contents
WO1997016085A1 *Nov 3, 1995May 9, 1997Marmon Holdings, Inc.Anti-vibration hand covering
WO1997043191A1 *May 14, 1997Nov 20, 1997Gale Gregory WShipping carton for glass bottles and pulp inserts for use therein and combination thereof
WO1998002366A1Jul 16, 1997Jan 22, 1998Alfacel S.A.Packaging of shirred food casing
U.S. Classification206/523, 428/211.1, 156/78, 264/46.4, 428/79, 206/457, 264/251, 521/917, 229/185.1, 156/245, 428/542.8, 428/318.4, 206/591, 264/54, 217/53
International ClassificationB31B7/00, B65D5/50
Cooperative ClassificationB31B2217/0038, B65D5/509, B31B7/00, Y10S521/917
European ClassificationB31B7/00, B65D5/50D5A