US3002674A - Improvements in paper bags and the like - Google Patents

Improvements in paper bags and the like Download PDF

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Publication number
US3002674A
US3002674A US76327058A US3002674A US 3002674 A US3002674 A US 3002674A US 76327058 A US76327058 A US 76327058A US 3002674 A US3002674 A US 3002674A
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Prior art keywords
inner
flap
bag
outer
paper
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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.)
Expired - Lifetime
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Wright Charles Edmund
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Wright Charles Edmund
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5816Opening or contents-removing devices added or incorporated during package manufacture for tearing a corner or other small portion next to the edge, e.g. a U-shaped portion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/04Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827Tear-lines provided in a wall portion
    • B65D75/5833Tear-lines provided in a wall portion for tearing out a portion of the wall

Description

Oct. 3,' 1961 c. E. WRIGHT 3,002,674

IMPROVEMENTS IN PAPER BAGS AND THE LIKE Filed Sept. 25, 1958 INVENTOK, CHAILLES EDMUND wr eHT ATTOPQ EY Patented Oct. 3, 1961 3 002,674 IMPROVEMENTS IN PAPER BAGS AND THE LIKE (Iharles Edmund Wright, Toronto, Ontario, Canada Filed Sept. 25, 1958, Ser. No. 763,270 Claims priority, application Canada, Dec. 10, 1957 1 Claim. (Cl. 229-51) This invention relates to new and useful improvements in containers, and more particularly to a tear-opening for paper bags and the like, to provide easy and quick access to the contents of a container having at least an inner and outer wall, e.g. duplex paper bags.

Heretofore, granular products, such as sugar, have been packaged largely in duplex paper bags which are usually made to two sheets of heavy lcraft paper, stitched along the upper edges as a closure. Similarly, non-pouring products, such as potatoes, having been packaged in like paper bags, the tops of which are usually secured with a wire tie or are sewn together. In both cases, it is diflicult to tear the bag tops to obtain access to the contents, save by way of scissors or a knife.

The object of this invention is to overcome this disadvantage.

This invention resides broadly in a paper bag having at least an inner wall and an overlying outer wall, spaced apart normally closed flaps cut in each wall, the inner fiap underlying an unweakened area of the overlying wall and positioned to be exposed after the outer flap commences to tear through said unweakened area.

Another feature of the invention consists of attaching the inner flap to the undersurface of the unweakened overlying wall whereby on tearing back the outer flap the inner flap is pulled open.

The bags are formed on a conventional bag making machine. Before the webs are brought together in the machine, they are die-cut each with a series of cuts to form the flaps in each web and the necessary adhesive applied where required. When the webs are brought together in the machine, the flaps in each web are brought together in succession in spaced relation in conformity with the invention.

In the drawings, the invention is shown in conjunction with duplex bags made from two sheets of kraft paper. However, it will be apparent that this invention will apply equally well to bags having more than two walls as well as to different weights and type of paper. The term paper as used herein includes cellophane and similar materials used by paper converters in the manufacturing of bags.

Like reference numerals refer to like parts throughout the specification and drawings, in which:

FIGURE 1 is a perspective view illustrating a duplex bag with a tear opening opened in pouring position;

FIGURE 2 is a front elevation of a duplex bag partly broken away, to show the spaced relationship of the flaps in the inner and outer walls;

FIGURES 3, 4 and 5 illustrate a sequence of three positions starting with a bag showing the tear opening fully closed, then partially opened, and finally fully opened;

FIGURE 6 illustrates an horizontal application of the tear opening for bags containing non-pouring products; and

FIGURE 7 illustrates a further embodiment.

In the embodiment of this invention illustrated in FIG- URES 1, 2, 3, 4, and 5 of the drawings, a duplex bag 10 has an outer wall 11 and an inner wall or liner 12. Two U or V die-cuts 14 and 15 are made in the walls, one in the outer wall 11 and one in the inner wall 12, to form an outer flap 16 and an inner flap 17 respectively.

The die-cut 14 is spaced from the die-cut 15 so that the inner flap 17 is spaced away from the hinge portion of the outer flap 16 to underly an unweakened portion of the outer wall in the direction of the tear.

The inner flap 17 is adhesively or otherwise affixed to the overlying surface of the outer wall 11, for example by a spot of glue 18, positioned approximately as shown in FIGURE 2. Preferably, this spot of glue should be kept away from the edge of the die-cut notch 15 in order to allow for variations in the bag making machine.

In practice, it has been found desirable in forming the die-cut inner flap 17 to form the die with a few small uncut portions to more securely hold the edge of the inner flap 17 in position during handling when filled. For example, four small strands may be left uncut joining the inner flap 17 to the inner wall 12. However, it is emphasized that such a provision is not essential for the operation of the invention, and complete die-cut leaving no uncut portions may be used.

To further assist in preventing sifting and also to maintain the two walls 11 and 12 in juxtaposition in the area of the inner flap, two spots of glue 19 and 20 may be added, as shown in FIGURE 2.

It is also desirable to place a small spot of adhesive 21 on the inside of the outer flap to hold the outer flap lightly against the inner wall. This spot of adhesive should not bond the two walls too securely, in order that they may be parted easily without pulling the fibres of the paper across the area of the die-cut 15.

In operation, the outer flap 16 is grasped by the fingers and is pulled in the direction of the uncut portion of the outer flap. This pull tears the outer wall 11. Further pulling tears the paper still further extending on either side of the adhesive 18, and in bags where the inner flap 17 is adhesively affixed to the outer wall 11, the inner flap 17 is lifted up.

As further pulling continues, the inner wall 12 now tears in conjunction with the outer wall 11 to form a hole through both the inner and outer walls exposing the contents of the bag. This hole may be enlarged by still further pulling on the outer flap 16, and results in an opening through which the contents may be removed.

If a tear opening is required as illustrated in FIGURE 6, the outer flap 16 and the inner flap 17 should be disposed in a plane approximately parallel to the base of the bag. As the outer flap 16 is pulled, it will tear an opening across the bag.

In the embodiment illustrated in FIGURE 7, the inner flap 17 is not aflixed to the outer wall 11. Accordingly, when the outer flap 16 is lifted, the flap will tear in the outer wall to expose the inner flap 17. The die-cut 15 of the inner flap 17 may be perforated cut, or may be completely out through, depending upon the nature of the product being packed. When the inner flap 17 is exposed, it may be pushed inward, as shown in FIGURE 7, to provide access to the contents of the bag.

This invention may be applied to a bag made from cellophane or other non-fibrous paper. Because the nonfibrous nature of the material, the adhesive 18 on the inner flap 17 may extend across the die-cut, thereby sealing it against sifting of the finest powders. As the adhesive is weaker than the film, the inner flap 17 opens readily when the outer flap 16 is tom back.

It will be apparent that the tear opening can he placed in the front, back, or top of the bag or in the gussets of the bag.

What I claim as new and desire to protect by Letters Patent of the United States is:

A multiply paper bag, comprising: an outer wall ply and at least one inner wall ply, each ply having a substantially U-shaped cut therein defining tear-out tabs, said tabs being substantially coaxial and having the apex of an inner tab spaced from the ends of the substantially U-shaped cut defining the tab in an immediately overlying ply so as to define in said contiguous plies a two-ply strengthening bridge transverse to the axes of said tabs for lessening the danger of rupturing of said bag in the area of said tabs, said inner tab being adhered to said overlying ply by an adhesive bond stronger than the tear strength of its ply whereby tearing out of the overlying area of said overlying ply will cause a tearing out of the area beyond the base of said inner tab.

References Cited in the file of this patent UNITED STATES PATENTS Appel Mar. 30,

Andrew Dec. 14,

Mullinix-.. May 25,

Misch June 12,

Voege et a1 May 26,

FOREIGN PATENTS Canada Oct. 8,

US3002674A 1957-12-10 1958-09-25 Improvements in paper bags and the like Expired - Lifetime US3002674A (en)

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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104047A (en) * 1960-11-30 1963-09-17 Bemis Bro Bag Co Bag opener
US3175752A (en) * 1963-05-03 1965-03-30 Union Carbide Corp Package tearing means
US3250436A (en) * 1963-12-31 1966-05-10 Albert J Kurtz Pouring spout assembly for a dispensing container
DE1229828B (en) * 1962-11-12 1966-12-01 Windmoeller & Hoelscher A method of producing Kreuzbodensaecken having formed from parts of the tearing-open Bodenseitenumschlaege and apparatus for carrying out the method
US3295746A (en) * 1965-09-17 1967-01-03 Robert W Duncan Envelope
US3382972A (en) * 1966-09-29 1968-05-14 Cornelius M. Phipps Bubble package with permanent sliding lid
US3389852A (en) * 1966-06-15 1968-06-25 Lindt & Spruengli Schokolade Tear-up package
US4304335A (en) * 1980-06-09 1981-12-08 Johns-Manville Corporation Paperboard container for baking
US4350250A (en) * 1976-11-17 1982-09-21 Platmanufaktur Ab Composite packing
DE3337716A1 (en) * 1983-10-18 1985-04-25 Nordenia Kunststoffe Packaging for loose bulk material
US4679693A (en) * 1986-05-14 1987-07-14 Harold Forman Label resealing container
US4768654A (en) * 1982-03-18 1988-09-06 Bemis Company, Inc. Bag with pour spout feature
US5054619A (en) * 1989-12-15 1991-10-08 The Procter & Gamble Company Side opening flexible bag with longitudinally oriented carrying handle secured to side panels
US5065868A (en) * 1990-10-23 1991-11-19 Cornelissen Roger E Package consisting of a paper bag compactly packing compressed flexible articles
WO1993022215A1 (en) * 1992-04-27 1993-11-11 Rhone Poulenc Agrochimie Packaging for hazardous compositions
EP0627317A1 (en) * 1993-05-25 1994-12-07 Canon Kabushiki Kaisha Packing case and opening method therefor
US5531325A (en) * 1992-03-13 1996-07-02 The Procter & Gamble Company Storing and dispensing system for products packed in a sealed pouch
EP0905031A1 (en) 1997-09-30 1999-03-31 Simple Pleasures Flowerbulbs & Perennials, Inc. Storage and display box
US20050109652A1 (en) * 2003-11-26 2005-05-26 Sandra Goepfert Pack with overlapping dispensing orifice created by laminated packaging material
US20050255199A1 (en) * 2004-05-11 2005-11-17 Cadbury Adams Usa Llc. Package for dispensing and retaining gum slabs with adhesive securement
US7686165B2 (en) 2004-05-11 2010-03-30 Cadbury Adams Usa Llc Packaging design with separate compartments
US7811614B2 (en) 2004-05-11 2010-10-12 Cadbury Adams Usa Llc Gum slab package having insertable product retention member
US7901719B2 (en) 2004-05-11 2011-03-08 Cadbury Adams Usa Llc Gum slab package with flap retention
US20110064338A1 (en) * 2009-09-11 2011-03-17 Huhtamaki Ronsberg Zn Der Huhtamaki Deutschland Gmbh & Co. Kg Tear-open pouch
FR2951440A1 (en) * 2009-10-16 2011-04-22 Veriplast Flexible Package bag for e.g. pellets, has maintenance unit for maintaining tabs in folded-up position and folded-down position on walls to form convergent zone in inner side of bag to direct and channel products contained in bag
US7971718B2 (en) 2005-05-09 2011-07-05 Kraft Foods Global Brands Llc Package for dispensing and retaining gum slabs with adhesive securement
US20120051670A1 (en) * 2010-02-24 2012-03-01 Illinois Tool Works Inc. Storage bag for breast pump
US8393469B2 (en) 2004-07-08 2013-03-12 Kraft Foods Global Brands Llc Reclosable consumable product package assembly
US20130101239A1 (en) * 2011-04-08 2013-04-25 Martin Kropf Packaging container with pull tab
US8607980B2 (en) 2009-02-02 2013-12-17 Kraft Foods Global Brands Llc Openable and reclosable sealed package for confectionery products

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1133253A (en) * 1912-11-15 1915-03-30 Daniel Appel Wrapping-tube.
US2336584A (en) * 1938-12-27 1943-12-14 Bagpak Inc Bag
US2679349A (en) * 1948-09-30 1954-05-25 Charles D Mullinix Tear strip package and blank therefor
US2750096A (en) * 1954-05-20 1956-06-12 Ethel A Misch Paper containers
CA547146A (en) * 1957-10-08 D. Waugh Richard Bag structure
US2888187A (en) * 1953-07-22 1959-05-26 Bemis Bro Bag Co Bag

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA547146A (en) * 1957-10-08 D. Waugh Richard Bag structure
US1133253A (en) * 1912-11-15 1915-03-30 Daniel Appel Wrapping-tube.
US2336584A (en) * 1938-12-27 1943-12-14 Bagpak Inc Bag
US2679349A (en) * 1948-09-30 1954-05-25 Charles D Mullinix Tear strip package and blank therefor
US2888187A (en) * 1953-07-22 1959-05-26 Bemis Bro Bag Co Bag
US2750096A (en) * 1954-05-20 1956-06-12 Ethel A Misch Paper containers

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104047A (en) * 1960-11-30 1963-09-17 Bemis Bro Bag Co Bag opener
DE1229828B (en) * 1962-11-12 1966-12-01 Windmoeller & Hoelscher A method of producing Kreuzbodensaecken having formed from parts of the tearing-open Bodenseitenumschlaege and apparatus for carrying out the method
US3175752A (en) * 1963-05-03 1965-03-30 Union Carbide Corp Package tearing means
US3250436A (en) * 1963-12-31 1966-05-10 Albert J Kurtz Pouring spout assembly for a dispensing container
US3295746A (en) * 1965-09-17 1967-01-03 Robert W Duncan Envelope
US3389852A (en) * 1966-06-15 1968-06-25 Lindt & Spruengli Schokolade Tear-up package
US3382972A (en) * 1966-09-29 1968-05-14 Cornelius M. Phipps Bubble package with permanent sliding lid
US4350250A (en) * 1976-11-17 1982-09-21 Platmanufaktur Ab Composite packing
US4304335A (en) * 1980-06-09 1981-12-08 Johns-Manville Corporation Paperboard container for baking
US4768654A (en) * 1982-03-18 1988-09-06 Bemis Company, Inc. Bag with pour spout feature
DE3337716A1 (en) * 1983-10-18 1985-04-25 Nordenia Kunststoffe Packaging for loose bulk material
US4679693A (en) * 1986-05-14 1987-07-14 Harold Forman Label resealing container
US5054619A (en) * 1989-12-15 1991-10-08 The Procter & Gamble Company Side opening flexible bag with longitudinally oriented carrying handle secured to side panels
US5065868A (en) * 1990-10-23 1991-11-19 Cornelissen Roger E Package consisting of a paper bag compactly packing compressed flexible articles
US5531325A (en) * 1992-03-13 1996-07-02 The Procter & Gamble Company Storing and dispensing system for products packed in a sealed pouch
WO1993022215A1 (en) * 1992-04-27 1993-11-11 Rhone Poulenc Agrochimie Packaging for hazardous compositions
EP0627317A1 (en) * 1993-05-25 1994-12-07 Canon Kabushiki Kaisha Packing case and opening method therefor
US5701995A (en) * 1993-05-25 1997-12-30 Canon Kabushiki Kaisha Packing case and opening method therefor
EP0905031A1 (en) 1997-09-30 1999-03-31 Simple Pleasures Flowerbulbs & Perennials, Inc. Storage and display box
US7334682B2 (en) * 2003-11-26 2008-02-26 The Procter & Gamble Company Pack with overlapping dispensing orifice created by laminated packaging material
US20050109652A1 (en) * 2003-11-26 2005-05-26 Sandra Goepfert Pack with overlapping dispensing orifice created by laminated packaging material
US8172086B2 (en) 2004-05-11 2012-05-08 Cadbury Adams Usa Llc Packaging design with separate compartments
US20050255199A1 (en) * 2004-05-11 2005-11-17 Cadbury Adams Usa Llc. Package for dispensing and retaining gum slabs with adhesive securement
US7811614B2 (en) 2004-05-11 2010-10-12 Cadbury Adams Usa Llc Gum slab package having insertable product retention member
US7901719B2 (en) 2004-05-11 2011-03-08 Cadbury Adams Usa Llc Gum slab package with flap retention
US8252352B2 (en) 2004-05-11 2012-08-28 Kraft Foods Global Brands Llc Gum slab package with flap retention
US7913846B2 (en) 2004-05-11 2011-03-29 Cadbury Adams Usa Llc Packaging design with separate compartments
US8221812B2 (en) 2004-05-11 2012-07-17 Kraft Foods Global Brands Llc Gum slab package having insertable product retention member
US7686165B2 (en) 2004-05-11 2010-03-30 Cadbury Adams Usa Llc Packaging design with separate compartments
US8658229B2 (en) 2004-05-11 2014-02-25 Kraft Foods Global Brands Llc Gum slab package having insertable product retention member
US8393469B2 (en) 2004-07-08 2013-03-12 Kraft Foods Global Brands Llc Reclosable consumable product package assembly
US7971718B2 (en) 2005-05-09 2011-07-05 Kraft Foods Global Brands Llc Package for dispensing and retaining gum slabs with adhesive securement
US8607980B2 (en) 2009-02-02 2013-12-17 Kraft Foods Global Brands Llc Openable and reclosable sealed package for confectionery products
US20110064338A1 (en) * 2009-09-11 2011-03-17 Huhtamaki Ronsberg Zn Der Huhtamaki Deutschland Gmbh & Co. Kg Tear-open pouch
FR2951440A1 (en) * 2009-10-16 2011-04-22 Veriplast Flexible Package bag for e.g. pellets, has maintenance unit for maintaining tabs in folded-up position and folded-down position on walls to form convergent zone in inner side of bag to direct and channel products contained in bag
US20120051670A1 (en) * 2010-02-24 2012-03-01 Illinois Tool Works Inc. Storage bag for breast pump
US20130101239A1 (en) * 2011-04-08 2013-04-25 Martin Kropf Packaging container with pull tab

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