US20040240756A1 - Plastic bag for the vacuum preservation of food - Google Patents

Plastic bag for the vacuum preservation of food Download PDF

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Publication number
US20040240756A1
US20040240756A1 US10/849,917 US84991704A US2004240756A1 US 20040240756 A1 US20040240756 A1 US 20040240756A1 US 84991704 A US84991704 A US 84991704A US 2004240756 A1 US2004240756 A1 US 2004240756A1
Authority
US
United States
Prior art keywords
bag
ribbons
width
wall
walls
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.)
Abandoned
Application number
US10/849,917
Other languages
English (en)
Inventor
Alberto Malaspina
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.)
Nuova Poliver di Oddone Colomba and C SNC
Original Assignee
Nuova Poliver di Oddone Colomba and C SNC
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 Nuova Poliver di Oddone Colomba and C SNC filed Critical Nuova Poliver di Oddone Colomba and C SNC
Assigned to NUOVA POLIVER DI ODDONE COLOMBA & C. S.N.C. reassignment NUOVA POLIVER DI ODDONE COLOMBA & C. S.N.C. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MALASPINA, ALBERTO
Publication of US20040240756A1 publication Critical patent/US20040240756A1/en
Abandoned 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2023—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum in a flexible container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/002—Flexible containers made from webs by joining superimposed webs, e.g. with separate bottom webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/10—Feeding or positioning webs

Definitions

  • This invention is concerned with a bag of plastic material for the vacuum preservation of foodstuffs in home.
  • the bags comprise two walls of a plastic material, welded together along three sides.
  • the walls are usually many-layered polyethylene sheets, which are compatible with food but are impermeable to gas.
  • EP-A 1 281 625 discloses a different device for preventing the formation of air pockets, whereby the inside of one of the bag walls is hot-printed with two or three rectilinear rough bands, extending longitudinally over the entire length of the bag.
  • the bands are produced by applying a welding bar lined with teflon against the sheet comprising the bag wall.
  • FIG. 1 is a perspective view of a bag according to the invention
  • FIG. 2 is a front view of the inventive bag during air extraction
  • FIG. 3 is a diagrammatical side view of equipment for mass manufacturing bags according to the invention.
  • FIG. 4 is a diagrammatical front view of an alternative technique for mass manufacturing bags according to the invention.
  • a bag 10 comprises two rectangular walls 12 and 14 , which are joined together along their edges on three sides 30 , 32 , 34 by welding.
  • Each wall as known per se, is made of a many-layered plastic material, comprising an inner polyamide layer, which imparts a good mechanical resistance to the bag and also is an effective barrier to the leaking of air, and sandwiched between two outer layers of polyethylene, a material that is food-compatible and is easily weldable.
  • the width of wall 12 across the side welds 30 , 34 exceeds the width L of wall 14 by a quantity in the range 2% to 10%, preferably 5%. Consequently, wall 12 is slack with respect to wall 14 in the transverse direction, so that it will show undulations when wall 14 is distended.
  • passages are created, such as 18 , in a substantially longitudinal direction and with random distribution, the passages providing exit paths for the air.
  • the slack wall of the bag will of course be crumpled into small folds at the transverse weld 32 along the bottom of the bag, and in order to insure that a dependable, air-tight weld is obtained, the weld will preferably be made wider than the longitudinal welds 30 , 34 . This will improve the sealing at spots where leak passages might develop along the joining line between the flat surface of wall 14 and the wavy surface of wall 12 .
  • a known system for manufacturing conventional bags comprises, as shown on FIG. 3, two reels 20 , 22 , from which respective ribbons 24 , 26 are unrolled to form the walls of the bag.
  • Transverse welds 28 are made at predetermined intervals along the ribbons by means of welding bars B 1 , B 2 , in order to define the side borders of the bag, and longitudinal welds are also made on one of the edges of the ribbon to define the bottom of the bag.
  • ribbon 24 is pulled at a speed V 1 slightly in excess of the speed V 2 of ribbon 26 , so that excess material is fed forward between successive welds.
  • the sides of the bag are defined by longitudinal welds 130 , 132 , made along the edges 124 , 126 of the ribbons as they unroll from the reels (not shown), and the bottom of the bag is made by transverse, spaced welds.
  • the slackness in one of the walls is obtained by interposing a humped plate 134 between the ribbons.
  • the bag according to the invention can be manufactured by making only minor modifications to conventional bag manufacturing equipment.
  • the bag has the same degree of pliability of a conventional bag, so that it can easily match the changing shapes of the contents.
  • both walls might be integral with each other along one of the longitudinal edges, with welds made only on the other side and along the bottom.
US10/849,917 2003-05-27 2004-05-21 Plastic bag for the vacuum preservation of food Abandoned US20040240756A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2003U000089 2003-05-27
IT000089U ITTO20030089U1 (it) 2003-05-27 2003-05-27 Busta di materiale plastico per la conservazione sotto vuoto di alimenti.

Publications (1)

Publication Number Publication Date
US20040240756A1 true US20040240756A1 (en) 2004-12-02

Family

ID=33105054

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/849,917 Abandoned US20040240756A1 (en) 2003-05-27 2004-05-21 Plastic bag for the vacuum preservation of food

Country Status (3)

Country Link
US (1) US20040240756A1 (de)
EP (1) EP1481919A3 (de)
IT (1) ITTO20030089U1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100327015A1 (en) * 2009-06-25 2010-12-30 Nihon Kim Co., Ltd. Storage container

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2420550A (en) * 2004-11-25 2006-05-31 Steven Sholzberg Plastic bag for vacuum sealing
DE102005035508B3 (de) * 2005-07-26 2006-08-31 Mustafa Atar Verpackung und Verfahren zur Herstellung einer Verpackung
DE102018124302A1 (de) 2018-10-02 2020-04-02 Muni Berka Gmbh Verpackter explosivmittelhaltiger Formkörper und Verfahren zum Verpacken des Formkörpers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL38470C (de) * 1900-01-01
US5863578A (en) * 1996-04-25 1999-01-26 Carnival Brand Seafood Company Microwaveable vacuum packed seafood package and process
ITTO20010772A1 (it) 2001-08-03 2003-02-03 Nuova Poliver Di Oddone Colomb Busta di materiale plastico per la conservazione sotto vuoto di alimenti.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100327015A1 (en) * 2009-06-25 2010-12-30 Nihon Kim Co., Ltd. Storage container

Also Published As

Publication number Publication date
EP1481919A3 (de) 2007-05-02
ITTO20030089U1 (it) 2004-11-28
EP1481919A2 (de) 2004-12-01

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Legal Events

Date Code Title Description
AS Assignment

Owner name: NUOVA POLIVER DI ODDONE COLOMBA & C. S.N.C., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MALASPINA, ALBERTO;REEL/FRAME:015384/0456

Effective date: 20040512

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION