US3381887A - Sealing patch valve for plastic bags - Google Patents

Sealing patch valve for plastic bags Download PDF

Info

Publication number
US3381887A
US3381887A US630931A US63093167A US3381887A US 3381887 A US3381887 A US 3381887A US 630931 A US630931 A US 630931A US 63093167 A US63093167 A US 63093167A US 3381887 A US3381887 A US 3381887A
Authority
US
United States
Prior art keywords
slot
bag
panel
interior
patch
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.)
Expired - Lifetime
Application number
US630931A
Inventor
John C Lowry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Millennium Petrochemicals Inc
Original Assignee
National Destillers and Chemical Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by National Destillers and Chemical Corp filed Critical National Destillers and Chemical Corp
Priority to US630931A priority Critical patent/US3381887A/en
Application granted granted Critical
Publication of US3381887A publication Critical patent/US3381887A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/14—Valve bags, i.e. with valves for filling
    • B65D31/147—Valve bags, i.e. with valves for filling the filling port being provided in a side wall

Definitions

  • An internal patch is placed over the slot and is sealed along its bottom and top to the panel and along the side of the slot opposite to the side sealed to the outer patch.
  • a channel is then formed between the outer panel and the interior surface of the outer patch which leads to the slot with this channel continuing through the slot between the interior surface of the panel and the interior surface of the inner patch to the interior of the bag, When the bag is filled through this filling slot, the patches will crumble to close the slot and prevent sitting of the material from the bag.
  • This invention relates to a valve for plastic bags, and more particularly relates to a novel valve structure having improved closure action which comprises an interior and exterior patch of material sealed over a slot in a panel of a bag. These patches define a continuous channel from the exterior of the bag to the interior of the bag which includes the two interior surfaces of the two patches which crumble when the bag is filled to provide effective closure of the slot.
  • Another object of this invention is to form a novel sift-proof valve for plastic bags which is composed of an interior and exterior plastic patch which includes a slot in a panel of the bag and provides a continuous channel through the panel which is closed by crumbling when the bag is filled.
  • FIGURE 1 is a perspective view of a plastic bag having a slot in one panel thereof which is to be closed by the valve of the invention with the outer plastic sheet shown in exploded view.
  • FIGURE 2 illustrates the bag of FIGURE 1 after the outer patch has been sealed over the opening in the bag anel.
  • FIGURE 3 illustrates the bag of FIGURE 2 after the interior patch has been sealed to the interior of the panel containing the slot opening.
  • FIGURE 4 illustrates the bag of FIGURE 3 after the top of the bag is sealed closed.
  • FIGURE 5 is a cross-sectional view of FIGURE 4 taken across the line 55 in FIGURE 4 to illustrate the configuration of the continuous channel extending to the panel exterior, through the slot in the panel and to the interior of the bag.
  • FIGURE 1 there is illustrated a plastic bag having a front panel 11 and rear panel 12 which are joined by gusseted sides. Note that any suitable bag configuration such as a pillow-type bag could also use the present invention.
  • the bottom of bag 10 then has a heat seal 13 extending therethrough to close the bottom of the bag by sealing the bottom of panels 11 and 12 to one another.
  • the bag 10 can be formed of any desired material such as polyethylene having a thickness, for example, of 10 mils, the bag being useful for the packaging of fertilizer, or the like.
  • a slot 14 is placed in the outer panel 11, as illustrated, where slot 14 could, for example, be a knife-cut through panel 11 having a length of about 2 inches.
  • An outer patch 15 of plastic material such as polyethylene having a thickness of about 2 mils and having a square shape of about 3 inches on a side, is then placed over the slot 14, as illustrated in FIGURES 1 and 2, and is heat sealed to panel 11 along the two heat seals 16 and 17 which run respectively parallel to slot 14 to the left of slot 14 and perpendicular to the bottom of slot 14. Note that the upper edge of the right-hand edge of patch 15 is free from panel 11 at this point in the manufacture of the valve.
  • an interior patch 18, similar to patch 15, is applied to the interior surface of panel 11 as shown in FIGURE 3, and is heat sealed over the slot 14 to panel 11 along heat seal lines 19 and 20 which are respectively parallel to slot 14 on the right-hand side of the slot and perpendicular to the slot running below the bottom of the slot.
  • patches 15 and 18 could be initially secured to the panel 11 simultaneously by a common bottom heat seal which would define heat seals 14 and 20 with their vertical seals being made subsequently. Note that the heat seal 19 is made only to panel 11 and does not reach patch 15.
  • the bag top is closed by a common heat seal 21, shown in FIGURE 4, which extends through the two panels 11 and 12, the patches 18 and 19, and the side gussets so that the sole entry to the bag is through the slot 14.
  • a plastic bag having a valve for preventing the sifting of contents of the bag; said plastic bag comprising first and second opposing panels joined at the sides thereof; the tops and bottoms of said first and second panels joined to one another to form a closed interior volume; said valve including an elongated slot in said first panel, an exterior patch of flexible plastic material and an interior patch of flexible plastic material; said exterior and interior patches disposed on the exterior and interior surface of said first panel, respectively, and extending across said slot; said exterior patch connected to the exterior surface of said first panel by heat sealing lines partially encircling said slot and forming a channel from regions exterior of said panel to said slot; said interior patch being connected to the interior surface of said panel by heat sealing lines partially encircling said slot and defining a second channel extending from said slot to the interior of said bag; said first and second channels communicating with one another through said slot; said first and second channels forming a single continuous channel extending through said slot; said exterior and interior patches sealed to said exterior and interior surfaces respectively of said panel with respective seal lines extending per

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Description

BAGS
All
J. C. LOWRY Filed April 14, 1967 May 7, 1968 United States Patent 3,381,887 SEALING PATCH VALVE FOR PLASTIC BAGS John C. Lowry, Trumbull, Conn., assignor to National Distillers and Chemical Corporation, New York, N.Y., a corporation of Virginia Filed Apr. 14, 1967, Ser. No. 630,931 1 Claim. (Cl. 229-625) ABSTRACT OF THE DISCLOSURE A plastic bag has a slot in one panel which is covered on the exterior by a thin plastic patch which is sealed to the panel along the bottom of the patch and along one side parallel to the slot. An internal patch is placed over the slot and is sealed along its bottom and top to the panel and along the side of the slot opposite to the side sealed to the outer patch. A channel is then formed between the outer panel and the interior surface of the outer patch which leads to the slot with this channel continuing through the slot between the interior surface of the panel and the interior surface of the inner patch to the interior of the bag, When the bag is filled through this filling slot, the patches will crumble to close the slot and prevent sitting of the material from the bag.
This invention relates to a valve for plastic bags, and more particularly relates to a novel valve structure having improved closure action which comprises an interior and exterior patch of material sealed over a slot in a panel of a bag. These patches define a continuous channel from the exterior of the bag to the interior of the bag which includes the two interior surfaces of the two patches which crumble when the bag is filled to provide effective closure of the slot.
It is a primary object of this invention to provide a novel valve structure for plastic valves which can be manufactured simply and inexpensively.
Another object of this invention is to form a novel sift-proof valve for plastic bags which is composed of an interior and exterior plastic patch which includes a slot in a panel of the bag and provides a continuous channel through the panel which is closed by crumbling when the bag is filled.
These and other objects of this invention will become apparent from the following description when taken in connection with the drawings in which:
FIGURE 1 is a perspective view of a plastic bag having a slot in one panel thereof which is to be closed by the valve of the invention with the outer plastic sheet shown in exploded view.
FIGURE 2 illustrates the bag of FIGURE 1 after the outer patch has been sealed over the opening in the bag anel. p FIGURE 3 illustrates the bag of FIGURE 2 after the interior patch has been sealed to the interior of the panel containing the slot opening.
FIGURE 4 illustrates the bag of FIGURE 3 after the top of the bag is sealed closed.
FIGURE 5 is a cross-sectional view of FIGURE 4 taken across the line 55 in FIGURE 4 to illustrate the configuration of the continuous channel extending to the panel exterior, through the slot in the panel and to the interior of the bag.
Referring first to FIGURE 1, there is illustrated a plastic bag having a front panel 11 and rear panel 12 which are joined by gusseted sides. Note that any suitable bag configuration such as a pillow-type bag could also use the present invention.
The bottom of bag 10 then has a heat seal 13 extending therethrough to close the bottom of the bag by sealing the bottom of panels 11 and 12 to one another. The bag 10 can be formed of any desired material such as polyethylene having a thickness, for example, of 10 mils, the bag being useful for the packaging of fertilizer, or the like.
In accordance with the present invention and in order to provide a valve for filling the bag with its desired contents while preventing sifting of these contents from the bag, a slot 14 is placed in the outer panel 11, as illustrated, where slot 14 could, for example, be a knife-cut through panel 11 having a length of about 2 inches. An outer patch 15 of plastic material such as polyethylene having a thickness of about 2 mils and having a square shape of about 3 inches on a side, is then placed over the slot 14, as illustrated in FIGURES 1 and 2, and is heat sealed to panel 11 along the two heat seals 16 and 17 which run respectively parallel to slot 14 to the left of slot 14 and perpendicular to the bottom of slot 14. Note that the upper edge of the right-hand edge of patch 15 is free from panel 11 at this point in the manufacture of the valve.
Thereafter, an interior patch 18, similar to patch 15, is applied to the interior surface of panel 11 as shown in FIGURE 3, and is heat sealed over the slot 14 to panel 11 along heat seal lines 19 and 20 which are respectively parallel to slot 14 on the right-hand side of the slot and perpendicular to the slot running below the bottom of the slot.
If desired, patches 15 and 18 could be initially secured to the panel 11 simultaneously by a common bottom heat seal which would define heat seals 14 and 20 with their vertical seals being made subsequently. Note that the heat seal 19 is made only to panel 11 and does not reach patch 15.
Thereafter, the bag top is closed by a common heat seal 21, shown in FIGURE 4, which extends through the two panels 11 and 12, the patches 18 and 19, and the side gussets so that the sole entry to the bag is through the slot 14.
As best seen in FIGURE 5 and recognizing that the tops and bottoms of these patches 15 and 18 are secured at their respective tops and bottoms, the only entry to the bag is through slot 14 and is defined by the channel 22 between panel 11 and patch 15 and thence through channel 23 which leads to the interior of the sealed bag and is formed between patch 18 and the interior of panel 11. Clearly, when the bag is filled, the panel 11 will distort, as will patches 15 and 18, in order to securely close their respective channels to the slot 14.
Although this invention has been described with respect to its preferred embodiments, it should be understood that many variations and modifications will now be obvious to those skilled in the art, and it is preferred, therefore, that the scope of the invention be limited not by the specific disclosure herein, but only by the appended claim.
The embodiments of the invention in which an exclusive privilege or property is claimed are defined as follows:
1. A plastic bag having a valve for preventing the sifting of contents of the bag; said plastic bag comprising first and second opposing panels joined at the sides thereof; the tops and bottoms of said first and second panels joined to one another to form a closed interior volume; said valve including an elongated slot in said first panel, an exterior patch of flexible plastic material and an interior patch of flexible plastic material; said exterior and interior patches disposed on the exterior and interior surface of said first panel, respectively, and extending across said slot; said exterior patch connected to the exterior surface of said first panel by heat sealing lines partially encircling said slot and forming a channel from regions exterior of said panel to said slot; said interior patch being connected to the interior surface of said panel by heat sealing lines partially encircling said slot and defining a second channel extending from said slot to the interior of said bag; said first and second channels communicating with one another through said slot; said first and second channels forming a single continuous channel extending through said slot; said exterior and interior patches sealed to said exterior and interior surfaces respectively of said panel with respective seal lines extending perpendicular to and below the bottom edge of said slot and by vertical seal lines laterally displaced from and parallel to and respectively on opposite sides of said slot; the top edges of said exterior and interior seal line; said common heat seal line joining the top edges of said exterior and interior patches of said panel extending completely across the top of said panel and additionally seals said first and second panels together at the top of said bag.
References Cited UNITED STATES PATENTS 3,102,676 9/1963 Danelli et al. 229-625 3,322,327 5/1967 Prall 229-625 FOREIGN PATENTS 1,03 8,305 8/1966 Great Britain.
patches being heat sealed to said panel by a common heat 15 DAVID M. BROCKENEK, Primary Examiner.
US630931A 1967-04-14 1967-04-14 Sealing patch valve for plastic bags Expired - Lifetime US3381887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US630931A US3381887A (en) 1967-04-14 1967-04-14 Sealing patch valve for plastic bags

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US630931A US3381887A (en) 1967-04-14 1967-04-14 Sealing patch valve for plastic bags

Publications (1)

Publication Number Publication Date
US3381887A true US3381887A (en) 1968-05-07

Family

ID=24529158

Family Applications (1)

Application Number Title Priority Date Filing Date
US630931A Expired - Lifetime US3381887A (en) 1967-04-14 1967-04-14 Sealing patch valve for plastic bags

Country Status (1)

Country Link
US (1) US3381887A (en)

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983138A (en) * 1988-11-01 1991-01-08 Mcgrath John Inflatable container with self-sealing valve
US6116781A (en) * 1999-08-13 2000-09-12 New West Products, Inc. Storage bag with one-way air valve
US6357915B2 (en) 1999-08-13 2002-03-19 New West Products, Inc. Storage bag with one-way air valve
US20030155269A1 (en) * 2001-02-21 2003-08-21 Kyul-Joo Lee Method for preparing air channel-equipped film for use in vacuum package
US20040053759A1 (en) * 2000-10-11 2004-03-18 Markham Michael Clements Packaging
US20040188310A1 (en) * 2003-03-31 2004-09-30 Peter Hamilton Ventable storage bag
US20040256050A1 (en) * 2003-03-24 2004-12-23 Hongyu Wu Forming evacuation channels during single and multi-layer extrusion process
US20050029704A1 (en) * 2003-03-05 2005-02-10 Tilia International, Inc. Method for manufacturing a sealable bag having an indicia for use in vacuum packaging
US20050035020A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Sealable bag having an integrated tray for use in vacuum packaging
US20050036719A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Sealable bag having an indicia for use in vacuum packaging
US20050036718A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Sealable bag having an integrated valve structure for use in vacuum packaging
US20050037163A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Sealable bag having an integrated timer/sensor for use in vacuum packaging
US20050034807A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Method for manufacturing a sealable bag having an integrated tray for use in vacuum packaging
US20050036717A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Sealable bag having an integrated zipper for use in vacuum packaging
US20050037164A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Liquid-trapping bag for use in vacuum packaging
US20050043158A1 (en) * 2003-03-05 2005-02-24 Tilia International, Inc. Method for manufacturing a sealable bag having an integrated timer/sensor for use in vacuum packaging
US20050065007A1 (en) * 2003-03-05 2005-03-24 Tilia International, Inc. Method for manufacturing a sealable bag having an integrated valve structure for use in vacuum packaging
US20050070412A1 (en) * 2003-03-05 2005-03-31 Tilia International, Inc. Method for manufacturing a sealable bag having an integrated zipper for use in vacuum packaging
US20050220942A1 (en) * 2004-03-15 2005-10-06 Hongyu Wu Easy to peal vacuum packaging bags
US20050220373A1 (en) * 2003-12-16 2005-10-06 Hongyu Wu Flexible composite bag for vacuum sealing
US20060013514A1 (en) * 2004-07-19 2006-01-19 Hongyu Wu Vacuum packaging bags with gussets and methods for using and manufacturing vacuum packaging bags with gussets
US20060072860A1 (en) * 2004-09-17 2006-04-06 Hongyu Wu Multi-layer film for forming a vacuum packaging bag and method of manufacture
US20060073291A1 (en) * 2004-07-22 2006-04-06 Hongyu Wu Vacuum packaging films patterned with protruding cavernous structures
US20060168777A1 (en) * 2005-01-31 2006-08-03 Turvey Robert R Slider for a reclosable pouch
US20070127854A1 (en) * 2005-12-05 2007-06-07 Smith Mark A Form fill and seal container
US20090232421A1 (en) * 2008-03-13 2009-09-17 Turvey Robert R Closure element for a pouch
US7625459B2 (en) 2003-03-05 2009-12-01 Sunbeam Products, Inc. Method for manufacturing liquid-trapping bag for use in vacuum packaging
US7784160B2 (en) 2007-03-16 2010-08-31 S.C. Johnson & Son, Inc. Pouch and airtight resealable closure mechanism therefor
US7857515B2 (en) 2007-06-15 2010-12-28 S.C. Johnson Home Storage, Inc. Airtight closure mechanism for a reclosable pouch
US7874731B2 (en) 2007-06-15 2011-01-25 S.C. Johnson Home Storage, Inc. Valve for a recloseable container
US7887238B2 (en) 2007-06-15 2011-02-15 S.C. Johnson Home Storage, Inc. Flow channels for a pouch
US7886412B2 (en) 2007-03-16 2011-02-15 S.C. Johnson Home Storage, Inc. Pouch and airtight resealable closure mechanism therefor
US7946766B2 (en) 2007-06-15 2011-05-24 S.C. Johnson & Son, Inc. Offset closure mechanism for a reclosable pouch
US7967509B2 (en) 2007-06-15 2011-06-28 S.C. Johnson & Son, Inc. Pouch with a valve
US20150122841A1 (en) * 2013-11-06 2015-05-07 The Procter & Gamble Company Easy to empty flexible containers
US20150122846A1 (en) * 2013-11-06 2015-05-07 The Procter & Gamble Company Flexible containers with vent systems
US9694965B2 (en) 2013-11-06 2017-07-04 The Procter & Gamble Company Flexible containers having flexible valves
US9988190B2 (en) 2015-04-10 2018-06-05 The Procter & Gamble Company Flexible containers with biased dispensing
US10017300B2 (en) 2015-04-10 2018-07-10 The Procter & Gamble Company Flexible containers with product dispensing visibility

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102676A (en) * 1960-02-16 1963-09-03 Montedison Spa Self-closing containers
GB1038305A (en) * 1963-08-23 1966-08-10 Financ De La Cellulose Soc Further improvements in the manufacture of containers made of plastic material
US3322327A (en) * 1966-06-02 1967-05-30 Nat Distillers Chem Corp Internal j-shaped valve for flexible bags

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102676A (en) * 1960-02-16 1963-09-03 Montedison Spa Self-closing containers
GB1038305A (en) * 1963-08-23 1966-08-10 Financ De La Cellulose Soc Further improvements in the manufacture of containers made of plastic material
US3322327A (en) * 1966-06-02 1967-05-30 Nat Distillers Chem Corp Internal j-shaped valve for flexible bags

Cited By (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983138A (en) * 1988-11-01 1991-01-08 Mcgrath John Inflatable container with self-sealing valve
US6116781A (en) * 1999-08-13 2000-09-12 New West Products, Inc. Storage bag with one-way air valve
WO2001012425A1 (en) * 1999-08-13 2001-02-22 New West Products, Inc. Storage bag with one-way air valve
US6357915B2 (en) 1999-08-13 2002-03-19 New West Products, Inc. Storage bag with one-way air valve
AU765778B2 (en) * 1999-08-13 2003-10-02 S.C. Johnson & Son, Inc. Storage bag with one-way air valve
US20040053759A1 (en) * 2000-10-11 2004-03-18 Markham Michael Clements Packaging
US20050143243A1 (en) * 2001-02-21 2005-06-30 Tilia International, Inc. Method for preparing air channel-equipped film for use in vacuum package
US20030155269A1 (en) * 2001-02-21 2003-08-21 Kyul-Joo Lee Method for preparing air channel-equipped film for use in vacuum package
US7022058B2 (en) 2001-02-21 2006-04-04 Tilia International, Inc. Method for preparing air channel-equipped film for use in vacuum package
US20060035046A1 (en) * 2001-02-21 2006-02-16 Tilia International, Inc. Method for preparing air channel-equipped film for use in vacuum package
US20050147330A1 (en) * 2001-02-21 2005-07-07 Tilia International, Inc. Vacuum packaging bags and multi-layer vacuum packaging film
US20050147774A1 (en) * 2001-02-21 2005-07-07 Tilia International, Inc. Bag roll for vacuum packaging applications
US7625459B2 (en) 2003-03-05 2009-12-01 Sunbeam Products, Inc. Method for manufacturing liquid-trapping bag for use in vacuum packaging
US20050070412A1 (en) * 2003-03-05 2005-03-31 Tilia International, Inc. Method for manufacturing a sealable bag having an integrated zipper for use in vacuum packaging
US20050034807A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Method for manufacturing a sealable bag having an integrated tray for use in vacuum packaging
US20050036717A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Sealable bag having an integrated zipper for use in vacuum packaging
US20050037164A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Liquid-trapping bag for use in vacuum packaging
US20050043158A1 (en) * 2003-03-05 2005-02-24 Tilia International, Inc. Method for manufacturing a sealable bag having an integrated timer/sensor for use in vacuum packaging
US20050065007A1 (en) * 2003-03-05 2005-03-24 Tilia International, Inc. Method for manufacturing a sealable bag having an integrated valve structure for use in vacuum packaging
US20050037163A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Sealable bag having an integrated timer/sensor for use in vacuum packaging
US20050036718A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Sealable bag having an integrated valve structure for use in vacuum packaging
US20050036719A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Sealable bag having an indicia for use in vacuum packaging
US20050035020A1 (en) * 2003-03-05 2005-02-17 Tilia International, Inc. Sealable bag having an integrated tray for use in vacuum packaging
US20050029704A1 (en) * 2003-03-05 2005-02-10 Tilia International, Inc. Method for manufacturing a sealable bag having an indicia for use in vacuum packaging
US7138025B2 (en) 2003-03-05 2006-11-21 Tilia International, Inc. Method for manufacturing a sealable bag having an integrated tray for use in vacuum packaging
US7087130B2 (en) 2003-03-05 2006-08-08 Tilia International, Inc. Method for manufacturing a sealable bag having an integrated zipper for use in vacuum packaging
US7517484B2 (en) 2003-03-24 2009-04-14 Sunbeam Products, Inc. Forming evacuation channels during single and multi-layer extrusion process
US20040256050A1 (en) * 2003-03-24 2004-12-23 Hongyu Wu Forming evacuation channels during single and multi-layer extrusion process
US7004632B2 (en) 2003-03-31 2006-02-28 The Glad Products Company Ventable storage bag
US20040188310A1 (en) * 2003-03-31 2004-09-30 Peter Hamilton Ventable storage bag
US20050220373A1 (en) * 2003-12-16 2005-10-06 Hongyu Wu Flexible composite bag for vacuum sealing
US7220053B2 (en) 2003-12-16 2007-05-22 Sunbeam Products, Inc. Flexible composite bag for vacuum sealing
US20050220942A1 (en) * 2004-03-15 2005-10-06 Hongyu Wu Easy to peal vacuum packaging bags
US20060013514A1 (en) * 2004-07-19 2006-01-19 Hongyu Wu Vacuum packaging bags with gussets and methods for using and manufacturing vacuum packaging bags with gussets
US20060073291A1 (en) * 2004-07-22 2006-04-06 Hongyu Wu Vacuum packaging films patterned with protruding cavernous structures
US7534039B2 (en) 2004-07-22 2009-05-19 Sunbeam Products, Inc. Vacuum packaging films patterned with protruding cavernous structures
US20060072860A1 (en) * 2004-09-17 2006-04-06 Hongyu Wu Multi-layer film for forming a vacuum packaging bag and method of manufacture
US20060168777A1 (en) * 2005-01-31 2006-08-03 Turvey Robert R Slider for a reclosable pouch
US20070127854A1 (en) * 2005-12-05 2007-06-07 Smith Mark A Form fill and seal container
US7770360B2 (en) * 2005-12-05 2010-08-10 Ds Smith Plastics Limited Form fill and seal container
US8827556B2 (en) 2007-03-16 2014-09-09 S.C. Johnson & Son, Inc. Pouch and airtight resealable closure mechanism therefor
US7784160B2 (en) 2007-03-16 2010-08-31 S.C. Johnson & Son, Inc. Pouch and airtight resealable closure mechanism therefor
US8176604B2 (en) 2007-03-16 2012-05-15 S.C. Johnson & Son, Inc. Pouch and airtight resealable closure mechanism therefor
US7886412B2 (en) 2007-03-16 2011-02-15 S.C. Johnson Home Storage, Inc. Pouch and airtight resealable closure mechanism therefor
US7874731B2 (en) 2007-06-15 2011-01-25 S.C. Johnson Home Storage, Inc. Valve for a recloseable container
US7887238B2 (en) 2007-06-15 2011-02-15 S.C. Johnson Home Storage, Inc. Flow channels for a pouch
US7946766B2 (en) 2007-06-15 2011-05-24 S.C. Johnson & Son, Inc. Offset closure mechanism for a reclosable pouch
US7967509B2 (en) 2007-06-15 2011-06-28 S.C. Johnson & Son, Inc. Pouch with a valve
US7857515B2 (en) 2007-06-15 2010-12-28 S.C. Johnson Home Storage, Inc. Airtight closure mechanism for a reclosable pouch
US8231273B2 (en) 2007-06-15 2012-07-31 S.C. Johnson & Son, Inc. Flow channel profile and a complementary groove for a pouch
US20090232421A1 (en) * 2008-03-13 2009-09-17 Turvey Robert R Closure element for a pouch
US8529129B2 (en) 2008-03-13 2013-09-10 S.C. Johnson & Son, Inc. Closure element for a pouch
US20150122841A1 (en) * 2013-11-06 2015-05-07 The Procter & Gamble Company Easy to empty flexible containers
US20150122846A1 (en) * 2013-11-06 2015-05-07 The Procter & Gamble Company Flexible containers with vent systems
US9694965B2 (en) 2013-11-06 2017-07-04 The Procter & Gamble Company Flexible containers having flexible valves
US9850046B2 (en) * 2013-11-06 2017-12-26 The Procter & Gamble Company Flexible containers with vent systems
US10138049B2 (en) 2013-11-06 2018-11-27 The Procter & Gamble Company Flexible containers having flexible valves
US9988190B2 (en) 2015-04-10 2018-06-05 The Procter & Gamble Company Flexible containers with biased dispensing
US10017300B2 (en) 2015-04-10 2018-07-10 The Procter & Gamble Company Flexible containers with product dispensing visibility

Similar Documents

Publication Publication Date Title
US3381887A (en) Sealing patch valve for plastic bags
US4312473A (en) Two-chamber envelope package
US2978769A (en) Plastic bag or container
US3189252A (en) Plastic self-sealed valved container
US3937395A (en) Vented bags
US3237844A (en) Bag closure
US2541674A (en) Bag structure, and particularly the closure therefor
US3567110A (en) Sealed bag having a pair of handles attached to two folded end portions and retained thereafter the contents are dispensed
US3394870A (en) Double pocketed pouch
US4905298A (en) Resealable closure
US3596828A (en) Flexible pouches and bags
US4142667A (en) Sealable longitudinal sleeveless valve bag
GB1125189A (en) Plastics bag material and bags formed therefrom
US3263903A (en) Valved container
US3397622A (en) Bags
GB1331315A (en) Container
US3825157A (en) Automatic closure for containers
GB1037890A (en) Easy opening bag
US3355303A (en) Bread package
GB1353471A (en) Flexible packages
GB855804A (en) Improvements in and relating to containers
US3960314A (en) Coin bags with flip top closures
US3384294A (en) Plastic bag with tuck-in valve
US3117712A (en) Bag
US3141601A (en) Bag top closure