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Publication numberUS3123279 A
Publication typeGrant
Publication dateMar 3, 1964
Filing dateMay 21, 1962
Publication numberUS 3123279 A, US 3123279A, US-A-3123279, US3123279 A, US3123279A
InventorsThomas Arnold Day
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Plastic bag
US 3123279 A
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Description  (OCR text may contain errors)

March 3, 1964 DAY 3,123,279

PLASTIC BAG Filed May 21, 1962 Inventor Thomas Arnold DAY United States Patent Ofl ice 3,123,279 Patented Mar. 3, 1964 3,123,279 PLASTIC BAG Thomas Arnold Day, Westrnount, Quebec, Canada,

assignor to Du Pont of Canada Limited, Montreal,

Quebec, Canada, a corporation of Canada Filed May 21, 1962, Ser. No. 196,276 Claims priority, application Canada May 25, 1961 1 Claim. (Cl. 22953) This invention relates to plastic bags and more particularly to ventilated plastic bags.

Farm and garden produce are frequently packaged in bags manufactured from thermoplastic materials. At the present time there are two types of bags from which to choose, each having its advantages and disadvantages.

The first type of bag which is in common use today is made entirely from thermoplastic film. This results in an attractive package which is strong, inexpensive and has an exterior which can be printed upon to identify the product and brand. This bag, however, has one serious fault. Many fruits and vegetables require ventilation during storage and a thermoplastic bag of normal manufacture is substantially air tight. To permit some air to circulate through the bag it is common practice to punch holes in the side panels. Since this has a tendency to weaken the bag, the number of holes which can be punched is thus limited and is below that required to provide a desirable level of ventilation.

The second type of bag is fabricated entirely from thermoplastic net. By its very nature this bag is totally ventilated and overcomes the one fault of the film bag. In addition the product in such a bag can be inspected quite readily through the mesh. However, other difficulties present themselves, the most serious being lack of identification. The only area which is available for printing is the overlap film or paper seam at the top and bottom of the bag and this is not adequate.

Another problem posed by this type of bag is damage of the product in the bag by ultraviolet light. Certain produce, potatoes for example, deteriorate rapidly when subjected to light of this wave length. A printed film bag does not permit the rays from the sun or from fluorescent light fixtures to reach the product. But an all net bag does not have this property and this has proven to be a serious disadvantage.

The object of this invention then is to overcome these deficiencies and to provide an inexpensive bag with provision for adequately ventilating and identifying the product.

Other objects and advantages of this invention will become apparent from the following description, it being understood that said description is given by way of illustration and explanation only and not by way of limitation,

since various changes therein may be made by those skilled in the art without departing from the scope or spirit of the present invention.

Referring now to the accompanying drawings:

FIGURE 1 is a plan view of the bag;

FIGURE 2 is a cross section of FIGURE 1 on the line 22;

FIGURE 3 is a perspective view of the bag.

FIGURE 1 shows the thermoplastic film (1) in this case at the back of the bag and the net (2) at the front. The film is shown folded (3) over the net and sealed (4) through the net to itself. This is shown in greater detail in FIGURE 2 and the overall appearance of the bag is shown in FIGURE 3.

It will be obvious that this invention provides a much needed article, a. bag having ample ventilation and a large area suitable for identification purposes. The film can be printed or coloured which in addition to having a very pleasant appearance will prevent the ultraviolet light from striking the product, yet by simply turning the package over, the customer will be able to closely examine the contents through the net. The method of fabrication will result in a bag considerably stronger than the all net bag, as the unperforated film will reinforce the net at the seams.

This present invention can be used with a wide range of thermoplastic materials. An illustrative list from which the materials for both the film and net may be selected would include polyethylene both conventional and linear, nylon, polystyrene, polypropylene, polyolefins, polyesters and blends of polyethylene with polybutene, polyisobutylene and polypropylene.

In addition a combination of thermoplastic film and fibrous net can be used. The film can be selected from the above list of thermoplastic materials and the mesh can be a fibrous material such as paper or cotton.

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

In a. plastic bag, the combination of printable thermoplastic film on one side and extruded thermoplastic net on the other, three margins of said film and net being joined together by folding the film over the net and sealing the film through the net to itself.

References Cited in the file of this patent UNITED STATES PATENTS 2,056,804 Potdevin Oct. 6, 1936 2,085,365 Israel June 29, 1937 2,298,421 Salfisberg Oct. 13, 1942 2,689,678 Wendt Sept. 21, 1954 3,040,966 Crane June 26, 1962

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2056804 *Jun 14, 1935Oct 6, 1936Potdevin Machine CoBag
US2085365 *Aug 3, 1935Jun 29, 1937Master Marble CompanyContainer for marbles
US2298421 *Feb 1, 1941Oct 13, 1942Ivers Lee CoDisplay package
US2689678 *Nov 9, 1950Sep 21, 1954Bemis Bro Bag CoBag
US3040966 *Sep 28, 1959Jun 26, 1962Allied Plastics CompanyArticle packaging sleeve
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3554368 *Mar 13, 1969Jan 12, 1971Du PontPackage and packaging method
US4161559 *Feb 1, 1978Jul 17, 1979Windmoller & HolscherReinforced webs of film
US5226735 *Aug 27, 1992Jul 13, 1993Daniel BeliveauPerforated plastic bag for packaging fruits or vegetables
US5651455 *Jul 17, 1996Jul 29, 1997Garcia; MarjorieUtility accessory bag
US6024489 *Dec 16, 1998Feb 15, 2000Kenneth Fox Supply CompanyProduce bag with improved strength and loading features
US6030120 *Oct 16, 1998Feb 29, 2000Kenneth Fox Supply Co.Produce bag with improved wicket features
US6080093 *Jul 3, 1997Jun 27, 2000Kenneth Fox Supply CompanyApparatus for wicket-top converting of a cross-laminated synthetic resin fiber mesh bag
US6190044Jul 8, 1999Feb 20, 2001Kenneth Fox Supply CompanyProduce bag with improved strength and loading features
US6416220Oct 23, 2000Jul 9, 2002Kenneth Fox Supply Co.Produce bag with improved strength and loading features
US6506429 *Jan 11, 2000Jan 14, 2003Michael J. Recchia, Jr.Bag with mesh wall
US6626570Feb 19, 2001Sep 30, 2003Kenneth Fox Supply CompanyProduce bag with draw top
US6799622Aug 22, 2002Oct 5, 2004Michael J. Recchia, Jr.Heat seal die for heat sealing plastic sheets
US6823650 *Jun 28, 2001Nov 30, 2004Michael J. Recchia, Jr.Method for forming a bag with mesh wall
US6932510 *Jul 10, 2002Aug 23, 2005Mercury Plastics, Inc.General purpose bag having film and mesh portions
US6974406Oct 23, 2001Dec 13, 2005Paul AntonacciSide-sealed bag having label section and method of production therefor
US7163339Apr 16, 2001Jan 16, 2007Plaspack U.S.A., Inc.Composite breathable produce bag with a reinforced mesh sidewall
US7640715Sep 19, 2006Jan 5, 2010Plaspack Usa, Inc.Multi-material vertical form, fill and seal bag forming method
US7837388May 9, 2003Nov 23, 2010Plaspack Usa, Inc.Multi-material vertical form, fill and seal bag
US8550717Sep 2, 2010Oct 8, 2013Plaspack U.S.A., Inc.Composite breathable produce bag with a reinforced mesh sidewall
US8784967Oct 7, 2010Jul 22, 2014Volm Companies, Inc.Open mesh material and bags made therefrom
EP1749760A1 *Aug 1, 2006Feb 7, 2007Sorma S.P.A.Container for fruit and vegetables products
WO1999015418A1 *Sep 17, 1998Apr 1, 1999Amoco CorpOpen mesh bag
WO2000023338A1 *Oct 14, 1999Apr 27, 2000Kenneth Fox Supply CompanyProduce bag with improved wicket features
WO2011044324A2Oct 7, 2010Apr 14, 2011Volm Companies, Inc.Open mesh material and bags made therefrom
Classifications
U.S. Classification383/102, 383/117, 383/107
International ClassificationB65D30/00
Cooperative ClassificationB65D31/00
European ClassificationB65D31/00