US3307773A - Readily closable and reopenable plastic bag - Google Patents

Readily closable and reopenable plastic bag Download PDF

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Publication number
US3307773A
US3307773A US268117A US26811763A US3307773A US 3307773 A US3307773 A US 3307773A US 268117 A US268117 A US 268117A US 26811763 A US26811763 A US 26811763A US 3307773 A US3307773 A US 3307773A
Authority
US
United States
Prior art keywords
wall
bag
flap
reopenable
open end
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
US268117A
Other languages
English (en)
Inventor
James C Kratzer
Wilton Peter
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.)
Union Carbide Corp
Original Assignee
Union Carbide 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 Union Carbide Corp filed Critical Union Carbide Corp
Priority to US268117A priority Critical patent/US3307773A/en
Priority to BE645245D priority patent/BE645245A/xx
Priority to LU45691D priority patent/LU45691A1/xx
Priority to NL6402897A priority patent/NL6402897A/xx
Priority to CH377464A priority patent/CH403610A/fr
Priority to GB12535/64A priority patent/GB1044395A/en
Priority to DE19641486689 priority patent/DE1486689B1/de
Application granted granted Critical
Publication of US3307773A publication Critical patent/US3307773A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • B65D33/20—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps using pressure-sensitive adhesive
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S229/00—Envelopes, wrappers, and paperboard boxes
    • Y10S229/938—Sandwich holder

Definitions

  • the liquid 16 may be coated on the bag in an undiluted form, or may be first diluted in a volatile solvent, such as ethanol, methanol, water, and the like, and then coated on the bag.
  • a volatile solvent such as ethanol, methanol, water, and the like
  • Preferred coating methods include spraying, roller or brush coating, and doctor blading, but any suitable technique, such as compounding the liquid 16 with the plastic material before making the plastic film or bag, may be employed.
  • liquid 16 If the liquid 16 is compounded with the plastic material, it will migrate to the surface of the plastic to form a liquid film thereon. Undiluted liquid has been successfully used in the coating methods as well as 2, 2.5, 4, 5, l0, and 20 percent concentrations by volume in ethanol. In any event, a thin film of the liquid 16 must be present on the bag at the appropriate places. The thin film must be thick enough to achieve sufiicient cling but preferably not so thick as to appear unsightly or to feel undesirably sticky to one who handles the bag. Between about 50 and about 800 milligrams of the liquid 16 per square meter of plastic material has been found to be satisfactory.
  • the invention provides a readily closable and reopenable bag, and eliminates the need for separate closure means for plastic bags or inconvenient adhesives which permanently bond one material to another.
  • liquid as used herein means a material or mixture of materials which will by its inherent nature without the aid of solvents flow at 25 C. but which does not diffuse and fill any container virtually uniformly in which it is put, as a gas will do.
  • substantially nonvolatile, high viscosity liquid as used herein means a liquid which evaporates very slowly at room temperatures and pressures, thus being relatively permanent when exposed under ordinary conditions, and which resists flow to a greater extent than materials such as water, ethylene glycol, and 98 percent sulfuric acid, which have viscosities less than about 25 centipoises at 25 C. In general, this term means a liquid having a vapor pressure at 25 C. below about 20 millimeters of mercury and 'a viscosity at 25 C. above about 25 centipoises.
  • liquid cling agent in accordance with the invention is to be contrasted with adhesive materials which must be wet with water or other solvents before they can be used as 'an adhesive and which almost always produce a permanent bond after drying again, i.e., a bond which can be broken only with great difficulty and usually by harming the bonded materials or the adhesive.
  • a readily closable and reopenable bag made of a flexible plastic material; said bag having a first wall and opposite said first wall a second wall, an open end between said first and second walls, and a flap extending from said first wall for folding over said open end and against said second wall, thereby closing said open end; and said bag having a thin film thereon, on at least one surface which exists between said flap and said second wall when said flap is folded over, consisting essentially of from 54 to about 59% by weight of a monoglyceride selected from the group consisting of glycerol monostearate and glycerol monooleate, not more than 0.5% by weight oleic acid, and the remainder diglycerides and propylene glycol; said film causing said flap to cling to said second wall when said flap is folded over.
  • a monoglyceride selected from the group consisting of glycerol monostearate and glycerol monooleate, not more than 0.5% by weight oleic acid, and

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Bag Frames (AREA)
  • Paints Or Removers (AREA)
  • Air Bags (AREA)
  • Refuse Receptacles (AREA)
US268117A 1963-03-26 1963-03-26 Readily closable and reopenable plastic bag Expired - Lifetime US3307773A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US268117A US3307773A (en) 1963-03-26 1963-03-26 Readily closable and reopenable plastic bag
BE645245D BE645245A (sv) 1963-03-26 1964-03-16
LU45691D LU45691A1 (sv) 1963-03-26 1964-03-18
NL6402897A NL6402897A (sv) 1963-03-26 1964-03-18
CH377464A CH403610A (fr) 1963-03-26 1964-03-24 Sac
GB12535/64A GB1044395A (en) 1963-03-26 1964-03-25 Improvements in or relating to bags
DE19641486689 DE1486689B1 (de) 1963-03-26 1964-03-26 Wiederholbarer Verschluss an einem Beutel aus biegsamem Kunststoff

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US268117A US3307773A (en) 1963-03-26 1963-03-26 Readily closable and reopenable plastic bag

Publications (1)

Publication Number Publication Date
US3307773A true US3307773A (en) 1967-03-07

Family

ID=23021534

Family Applications (1)

Application Number Title Priority Date Filing Date
US268117A Expired - Lifetime US3307773A (en) 1963-03-26 1963-03-26 Readily closable and reopenable plastic bag

Country Status (7)

Country Link
US (1) US3307773A (sv)
BE (1) BE645245A (sv)
CH (1) CH403610A (sv)
DE (1) DE1486689B1 (sv)
GB (1) GB1044395A (sv)
LU (1) LU45691A1 (sv)
NL (1) NL6402897A (sv)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655118A (en) * 1970-06-15 1972-04-11 American Velcro Inc Flexible mouth container
US3680768A (en) * 1970-08-12 1972-08-01 Cellu Craft Inc Plastic bag with integral pouch and method for making same
US3973567A (en) * 1975-05-19 1976-08-10 Personal Products Company Wrapped sanitary napkins
US4034118A (en) * 1976-01-05 1977-07-05 Martin Fred A Method of sweetening or mellowing onions
US4287920A (en) * 1977-10-17 1981-09-08 Johnson Jr Glenn W Self-sealing valve
US4483018A (en) * 1981-02-09 1984-11-13 Impakt Products, Inc. High integrity tamper resistant container
US4612221A (en) * 1983-11-16 1986-09-16 Union Carbide Corporation Multilayer food wrap with cling
US4905298A (en) * 1988-12-12 1990-02-27 Walor Curtis J Resealable closure
US20030230028A1 (en) * 2002-04-12 2003-12-18 Weder Donald E. Decorative floral sleeve
US20040031195A1 (en) * 2002-04-12 2004-02-19 Weder Donald E. Method of using a decorative floral sleeve
US20100151166A1 (en) * 2008-12-12 2010-06-17 Eva Almenar Micro-perforated poly(lactic) acid packaging systems and method of preparation thereof
US20110235949A1 (en) * 2010-03-28 2011-09-29 Miba Plast Ltd. Multi-use disposable food bag
EP3663222A1 (en) * 2018-12-07 2020-06-10 Stine Dalberg Closable food packing

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4502599A (en) * 1984-04-02 1985-03-05 Minnesota Mining And Manufacturing Company Package and method of packaging resealable plastic bags
EP0323730B1 (en) * 1988-01-04 1993-01-27 The Wiggins Teape Group Limited A carton combined with a stack of paper
GB2360271B (en) * 1998-07-08 2002-09-11 Flexipol Packaging Ltd Bags of easy open construction
CZ20004856A3 (cs) * 1998-07-08 2002-01-16 Flexipol Packaging Limited Vak s uzávěrem umoľňující nesnadné otevření

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1800143A (en) * 1928-10-29 1931-04-07 James C Hughes Sealing medium
US2496934A (en) * 1945-10-26 1950-02-07 Wingfoot Corp Adhesive
US2790732A (en) * 1949-04-29 1957-04-30 Ind Tape Corp Adhesive sheet containing specific mass deactivators
US2949370A (en) * 1957-09-23 1960-08-16 Ree Ceel Corp Package
US2970920A (en) * 1957-12-19 1961-02-07 Forkner John Hood Food package
US3052566A (en) * 1959-11-20 1962-09-04 Johnson & Johnson Pressure sensitive adhesive tape having a release coating of fatty alcohol itaconate
US3070280A (en) * 1960-06-09 1962-12-25 Richmond Paper Company Self-sealing envelopes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE635265C (de) * 1935-01-27 1936-09-14 Jagenberg Werke Ag Vorrichtung zum stellenweisen Auftragen von Klebstoff o. dgl. auf Werkstuecke aus Papier, Karton, Pappe oder aehnlichem Werkstoff
AT194774B (de) * 1956-02-28 1958-01-10 Rigot-Stalars Fils Sackverschluß
AT199558B (de) * 1957-04-16 1958-09-10 Alfred Dr Labek Beutelverschluß
DE1856948U (de) * 1962-06-30 1962-08-16 Agfa Ag Neuartiger verschluss fuer beutel.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1800143A (en) * 1928-10-29 1931-04-07 James C Hughes Sealing medium
US2496934A (en) * 1945-10-26 1950-02-07 Wingfoot Corp Adhesive
US2790732A (en) * 1949-04-29 1957-04-30 Ind Tape Corp Adhesive sheet containing specific mass deactivators
US2949370A (en) * 1957-09-23 1960-08-16 Ree Ceel Corp Package
US2970920A (en) * 1957-12-19 1961-02-07 Forkner John Hood Food package
US3052566A (en) * 1959-11-20 1962-09-04 Johnson & Johnson Pressure sensitive adhesive tape having a release coating of fatty alcohol itaconate
US3070280A (en) * 1960-06-09 1962-12-25 Richmond Paper Company Self-sealing envelopes

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655118A (en) * 1970-06-15 1972-04-11 American Velcro Inc Flexible mouth container
US3680768A (en) * 1970-08-12 1972-08-01 Cellu Craft Inc Plastic bag with integral pouch and method for making same
US3973567A (en) * 1975-05-19 1976-08-10 Personal Products Company Wrapped sanitary napkins
US4034118A (en) * 1976-01-05 1977-07-05 Martin Fred A Method of sweetening or mellowing onions
US4287920A (en) * 1977-10-17 1981-09-08 Johnson Jr Glenn W Self-sealing valve
US4483018A (en) * 1981-02-09 1984-11-13 Impakt Products, Inc. High integrity tamper resistant container
US4612221A (en) * 1983-11-16 1986-09-16 Union Carbide Corporation Multilayer food wrap with cling
US4905298A (en) * 1988-12-12 1990-02-27 Walor Curtis J Resealable closure
WO1990006887A1 (en) * 1988-12-12 1990-06-28 Walor Curtis J Resealable closure
US20030230028A1 (en) * 2002-04-12 2003-12-18 Weder Donald E. Decorative floral sleeve
US20040031195A1 (en) * 2002-04-12 2004-02-19 Weder Donald E. Method of using a decorative floral sleeve
US20100151166A1 (en) * 2008-12-12 2010-06-17 Eva Almenar Micro-perforated poly(lactic) acid packaging systems and method of preparation thereof
US20110235949A1 (en) * 2010-03-28 2011-09-29 Miba Plast Ltd. Multi-use disposable food bag
EP3663222A1 (en) * 2018-12-07 2020-06-10 Stine Dalberg Closable food packing

Also Published As

Publication number Publication date
CH403610A (fr) 1965-11-30
NL6402897A (sv) 1964-09-28
BE645245A (sv) 1964-07-16
GB1044395A (en) 1966-09-28
LU45691A1 (sv) 1964-05-19
DE1486689B1 (de) 1971-04-29

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