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US3661322A - Package seal - Google Patents

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Publication number
US3661322A
US3661322A US25898A US3661322DA US3661322A US 3661322 A US3661322 A US 3661322A US 25898 A US25898 A US 25898A US 3661322D A US3661322D A US 3661322DA US 3661322 A US3661322 A US 3661322A
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US
United States
Prior art keywords
ply
plies
package
seal
heat
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
US25898A
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English (en)
Inventor
Donald E Norman
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.)
Kraft Inc
Original Assignee
Kraft Inc
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 Kraft Inc filed Critical Kraft Inc
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Publication of US3661322A publication Critical patent/US3661322A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/382—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges using laminated sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/26—Articles or materials wholly enclosed in laminated sheets or wrapper blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • 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
    • Y10S383/00—Flexible bags
    • Y10S383/906—Dispensing feature

Definitions

  • ABSTRACT discloses a packaging development providing enhanced resistance to splitting or opening of a seam or seal in a multi-ply wall flexible film package.
  • a chub package having a cylindrical multi-ply wall of flexible film gathered at the end by clenched metal bands is set forth, the package having a seal formed at offsetting marginal strips on the inner and outer plies of the multi-ply wall.
  • a marginal strip on each ply is offset from an adjacent edge of the adjacent ply prior to forming the seal and the seal is formed by heat sealing the marginal strips to opposite edges of the-same ply.
  • PACKAGESEAL This invention relates to a package having a seam or sea! and to the method of making the seal of enhanced resistance to splitting or tearing.
  • a collapsible wall dispenser of the kind fully disclosed in U.S. Pat. No. 3,477,614 to Runge entitled Dispenser," which issued Nov. 11, 1969.
  • This dispenser includes a so-called chub package which is generally tubular in shape with a longitudinally extending seal or seam and clenched metal bands securing gathered ends of the package.
  • a wraparound strip is applied to the exterior of the package and supports a dispenser nozzle having an orifice through which a knife point may be inserted to pierce the package wall. The contents of the package are extruded through the pierced wall and nozzle by squeezing and collapsing the package wall.
  • Such packages may contain various products such as, for example, food products which may be extruded from the nozzle in streams with predetermined, fanciful shapes. Many products may require a considerable squeezing force on the package to extrude the product, particularly if the product is cold, with the result that considerable outwardly directed forces are applied against the longitudinally extending seal of the package tending to split or to open the same.
  • the package wall is formed of a flexible film comprising a plastic sheet, but such packaging materials also are subject to experiencing tear propagation, i.e., a continuation of the tear, from the puncture made at the area of the nozzle. When the nozzle is located adjacent the longitudinally extending seal, such tears are likely to propagate into the seal and may cause the seal to fail.
  • a general object of the invention is to provide an improved seal for a multi-ply package wall and a method of making the package and seal.
  • FIG. 1 is a perspective view of a dispenser and package embodying the novel features of the invention
  • FIG. 2 is a cross-sectional view illustrating the ofiset relationship of the plies prior to forming into the tubular shape of FIG. 1;
  • FIG. 3 is an enlarged cross-sectional view of the package of FIG. 1;
  • FIG. 4 is a diagrammatic illustration of a method of forming the package illustrated in FIG. 1.
  • the invention is embodied in the package 11 having a multi-ply wall 13 which is suitably formed to package a material therein and joined along a longitudinally extending seal or seam 15 with edges of the wall overlapped in a manner to provide enchanced resistance at the seal 15 against splitting or tearing.
  • Such enhanced strength characteristics for the seal 15 are particularly important for a package on which is attached a dispensing nozzle 17 by means of a strip 19.
  • the pressure for dispensing the contents of the package in a stream 20 of fanciful cross section with a manually exerted squeezing applies unusual pressure at the seam 15.
  • the illustrated package 11 is a so-called chub package which is of the type used to dispense a stream 20 of processed cheese or other extrudable materials upon puncturing the package wall 13 by inserting a sharp knife point through an orifice 21 in the nozzle l7.
  • the preferred method of making a package with a strong, longitudinally extending seal 15 includes the steps of laterally offsetting an inner ply 23 from an outer ply 25 of the flexible film material comprising the wall 13 of the package to provide elongated, marginal strips 27 and 29, as best seen in FIG. 2, along the longitudinal edges of each of the respective plies. That is to say, the marginal strip 27 of the inner ply extends laterally outwardly of edge 30 of the outer ply 25 and an opposite marginal strip 29 is provided by the outer ply which extends laterally outwardly beyond the edge 32 of the inner ply 23.
  • the multi-ply film material is formed into a tubular shape and filled with the material to be dispensed.
  • the longitudinally extending seal 15 for'the package is formed by joining the outer ply marginal strip 29 to an overlapped edge 31 of the outer ply 25, as best seen in FIG. 3, to form a first or outer seal; and by joining the interior ply marginal strip 27 to an overlapped edge 33 of the inner ply 23, as best seen in FIG. 3, to form a second or inner seal.
  • Suitable end seals for the package are made by application of metallic clenching bands 35 (FIG. 1) which tightly gather the package wall 13 together to form the sausage-like chub packages.
  • the inner and outer plies are each formed of a web of flexible film material such as saran 38 having a heat sealable coating 40 thereon for autogenously heat sealing due to the heat of the packaged product, while a third or intermediate seal 41 between the inner ply 23 and the outer ply 25 is formed by radio frequency heat sealer means 43 at the location of the dashed line.
  • the preferred inner and outer plies 23 and 25 have two layers, namely a layer 38 of saran and a layer of heat sealable material 40. Particularly good results have been obtained with a saran layer 38 coated with a heat sealable material 40 sold by Dow Chemical Company of Midland. Michigan under the trade name of Dow No. PZ 1620.19.
  • These inner and outer plies 23, 25 of heat sealable coated saran are preferably about 1 mil in thickness and are about 5 V4 inches in width. It is to be understood that the inner and outerplies may be made of other film materials and coated with other heat sealable coatings such as, for example, Elvax vinyl resins sold by E. I. du Pont de Nemours Co.
  • the film materials themselves may be of heat sealable material.
  • the outer ply 25 is disposed with its heat sealable coating 40 facing inwardly so that when formed into a tube, the heat sealable coating along its offset marginal strip 29 abuts the saran layer 38 along the opposite edge portion 31 of the outer ply 25.
  • the heat sealable coating 40 on the inner ply 23 faces outwardly so that when formed into a tube the heat sealable coating on its offset marginal strip 27 abuts the saran layer 38 along the opposite edge portion 33 of the inner ply 23.
  • inner and outer are used in the relative sense as there may be additional exterior or interior plies, or for that matter an intermediate ply, associated with the flexible film used to form the package wall 13.
  • the wall 13 is provided with additional strength against bursting or tearing by the inclusion of an intermediate reinforcing ply 45 of a thin film of polyethylene.
  • the polyethylene is located between the superimposed areas of the respective inner and outer plies 23 and 25 and has a width substantially less than the width of either the inner or outer plies.
  • the polyethylene ply 45 is positioned so that it does not extend either into the first or second seal to interfere with the heat sealing at the marginal strips 27 and 29 or into the third, intermediate seal 41.
  • a suitable polyethylene is a thin film about 0.015 inches in thickness and about 4 inches in width.
  • the inner ply 23 may be formed from a continuous web of film material which is stripped from a supply roll 50 and fed forwardly along a path to a packaging station 51.
  • the polyethylene intermediate ply 45 may also be in web form and disposed beneath the inner ply 23 and stripped from a supply roll 53.
  • the outer ply 25 may likewise be in web form and stripped from a suitable supply roll 55 and disposed beneath the intermediate ply 45.
  • the respective plies 23, 25 and 45 are arranged relative to each other and the intermediate ply 45 is sandwiched between the other plies.
  • the heat sealable coatings 40 of the inner and outer plies 23 and 25 are facing toward the intermediate ply 45.
  • the plies With the edge of each of the inner and outer plies laterally offset to form A; inch wide marginal strips, the plies are fed forwardly and formed by a former 57 into a generally tubular shape with the marginal strips 27 and 29 of the respective plies arranged in generally overlapped arrangement in the manner illustrated in FIG. 3 with their respective interior edges 42 and 44 substantially coplanar and spaced slightly from each other.
  • heated processed cheese 59 is being discharged from a nozzle 60 into the center of the formed tube.
  • the hot cheese will immediately raise the temperature of the heat sealable coatings 40 at the marginal strips to cause the heat sealable coatings to heat seal to the marginal edge portions 31 and 33 of the respective plies. This will also hold the polyethylene intermediate ply 45 against sliding relative to the inner and outer plies. Simultaneously with the formation of the above marginal seals, it is preferred that a radio frequency type of heat sealer 43 at the packaging station 51 form the intermediate heat seal 41.
  • the clenching bands 35 are clamped tightly to gather together the package wall 13 and seal these package ends against release of the cheese product when the side wall is squeezed to dispense its contents.
  • a relatively wide seam having first, second and third seals or seal areas is obtained to provide resistance to a separating of the heat seals when a squeezing pressure is applied to the package wall 13.
  • the usual manner of using the dispenser is to insert a sharp knife point through the orifice 21 in the nozzle 17 to puncture the package wall 13.
  • the puncture made by the knife point tends to expand although it is limited to a certain degree by the encircling band 19 which carries the nozzle.
  • the seam will be called upon to resist further tear propagation in the direction circumferentially ofthe package.
  • the seam 15 is formed with only a single ply 25 having its edge 63 (FIG. 3) exposed at the seam 15.
  • edge 63 FIG. 3
  • the edges of both the inner and outer plies would be exposed and the result would be a seam with an edge twice as thick as the edge 63 for the illustrated package.
  • a thick seam edge may interfere with attaching the strip 19 to the package wall.
  • the preferred manner of attaching the strip 19 to the package is to provide the band with an inner surface coating of pressure sensitive adhesive and to roll the package 13 onto this adhesive coating. If the thin exposed seam edge 63 is only a single ply in thickness, this edge 63 does not interfere even when the edge 63 first engages the adhesive, with rolling of the package on the strip.
  • the thinner edge 63 facilitates rolling and adhering of the chub package to an adhesive on the wrapper strip 19, and the formation of smooth, non-wrinkled appearance for the wrapper strip 19.
  • the illustrated package is formed with a seal means 15 having a longitudinally extending inner seal adhering overlapped edges of the inner ply, a longitudinally extending outer seal adhering overlapped edges of the outer ply and a centrally disposed longitudinally extending seal intermediate the overlapped inner and outer plies.
  • the inner and outer seals provide additional strength to the overlapped central intermediate seal.
  • a chub package comprising a substantially cylindrical multi-ply wall formed with an inner ply and an outer ply, each of said plies being of heat sealable material, said plies initially being unlaminated to each other when formed into said multiply wall, clenching means securing and gathering said plies at both ends of the package to form end seals and longitudinally extending seal means for said wall having adjacent longitudinally extending inner and outer heat seals, said inner heat seal being formed at overlapped edges of said inner ply of heat sealable material and said outer heat seal being formed at overlapped edges of said outer ply of heat sealable material.
  • a chub package in accordance with claim 1 in which said inner and outer plies are each formed of two layers, one layer of which is ofa heat sealable material, and in which said inner and outer plies are formed with substantially the same width and are circumferentially displaced relative to one another to provide offset marginal strips for forming said inner and outer seals.
  • a chub package in accordance with claim 2 in which a reinforcing ply is disposed intermediate said inner and outer plies and in which said reinforcing ply terminates circumferentially short of said marginal strips.
  • a chub package in accordance with claim 2 in which another seal is formed circumferentially intermediate said inner and outer seals.
  • a chub package in accordance with claim 4 in which said inner and outer plies are formed of saran with a heat sealable coating thereon and in which said inner, outer and intermediate seals are heat seals.
  • a method of making a chub package comprising the steps of arranging inner and outer plies having a heat sealable coating thereon with the coatings facing towards each other and with a marginal strip on each ply offset from an adjacent edge of the opposite ply, forming said plies into a tube and aligning said marginal strips with an opposite edge portion of its respective ply, heat sealing said marginal strips to said edge portions to form first and second seals for the respective plies, and clenching the tubular package at longitudinally spaced locations to form end seals for said package.
  • a method in accordance with claim 6 including the step of forming another heat seal intermediate said first and second heat seals.
  • a method in accordance with claim 7 including the step of inserting a reinforcing ply between said inner and outer plies prior to the forming ofsaid plies into a tubular shape, and spacing the edges of said intermediate ply from said first and second heat seals.
  • each of said plies being of heat sealable material, said plies initially being unlaminated to each other when formed into said multi-ply wall, the improvement comprising a longitudinally extending seal means having adjacent longitudinally extending first and second heat seals, said first heat seal being formed by overlapped edge portions of said inner ply of heat sealable material and said second heat seal being formed by overlapped edge portions of said outer ply of heat sealable material.
  • a chub package comprising a substantially cylindrical multi-ply wall formed with an inner ply and an outer ply, said inner and outer plies being formed of saran with a heat sealable coating thereon, means securing and gathering said plies at the ends of the package to form end seals, said inner and outer plies having substantially the same width and being circumferentially displaced relative to one another to provide off-set marginal strips, a longitudinally extending seal means having adjacent longitudinally extending inner and outer seals, said inner seal being formed by an overlapped edge of said inner ply and said marginal strip of said inner ply and said outer seal being formed by an overlapped edge of said outer ply and said marginal strip of said outer ply, a reinforcing ply being disposed intermediate said inner and outer plies, said reinforcing ply terminating circumferentially short of said marginal strips, and another seal formed intermediate said inner and outer seals joining said inner and outer plies.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Cartons (AREA)
US25898A 1970-04-06 1970-04-06 Package seal Expired - Lifetime US3661322A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2589870A 1970-04-06 1970-04-06

Publications (1)

Publication Number Publication Date
US3661322A true US3661322A (en) 1972-05-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
US25898A Expired - Lifetime US3661322A (en) 1970-04-06 1970-04-06 Package seal

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US (1) US3661322A (es)
JP (1) JPS5435550B1 (es)
BE (1) BE765292A (es)
CA (1) CA935407A (es)
DE (1) DE2116540A1 (es)
ES (1) ES174922Y (es)
FR (1) FR2089158A5 (es)
GB (1) GB1339058A (es)

Cited By (21)

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Publication number Priority date Publication date Assignee Title
US4025375A (en) * 1972-05-23 1977-05-24 Mira-Pak, Inc. Method for continuous welding together of plastic sheets
US4106261A (en) * 1977-08-08 1978-08-15 The Dow Chemical Company Method of forming, filling, and sealing scrim reinforced plastic bags
US4224970A (en) * 1978-10-18 1980-09-30 Super Sack Manufacturing Corporation Collapsible receptacle for flowable materials
US4227612A (en) * 1979-06-19 1980-10-14 General Electric Company Two-ply resin capsule for mining roof bolting systems
US4274244A (en) * 1979-05-18 1981-06-23 General Electric Company Method and apparatus for sealing polyester film in mine bolt capsule
US4292386A (en) * 1978-12-22 1981-09-29 Tokyo Shibaura Denki Kabushiki Kaisha Photoconductive drum with paper layer attachment
US4322929A (en) * 1980-03-12 1982-04-06 The Specialty Papers Company Packaging method using an adhesive coated web
US4457456A (en) * 1981-12-31 1984-07-03 Super Sack Manufacturing Company Collapsible receptacle with static electric charge elimination
US4479243A (en) * 1982-05-07 1984-10-23 Super Sack Manufacturing Corporation Collapsible receptacle with prefabricated lift loops and method of making
US5480067A (en) * 1993-04-14 1996-01-02 Hilti Aktiengesellschaft Composite foil hose-shaped bag
US5524418A (en) * 1994-03-29 1996-06-11 W. R. Grace & Co.-Conn. Process for making a package in a form/fill system
US5632133A (en) * 1994-02-22 1997-05-27 Wyslotsky; Ihor Method of pre-formed in-line thermofusing of multilayer polymeric films to form packaging components
US5638660A (en) * 1994-03-28 1997-06-17 W. R. Grace & Co.-Conn. Packaging process using oxygen-permeable multilayer film
US5951799A (en) * 1995-06-07 1999-09-14 Super Sack Manufacturing Corp. Anti-microbial shoe lining and sock liner and process for manufacture of same
US6585843B2 (en) 1992-01-10 2003-07-01 Super Sack Mfg. Corp. Anti-static, anti-corrosion, and/or anti-microbial films, fabrics, and articles
US6592702B2 (en) 1992-01-10 2003-07-15 Super Sack Mfg. Corp. Anti-static, anti-corrosion, and/or anti-microbial films, fabrics, and articles
US6651848B1 (en) * 1998-03-18 2003-11-25 Sanford Redmond Tubelike dispenser package
US20040031823A1 (en) * 2002-07-30 2004-02-19 Sanford Redmond Aperture forming means and package
US20040202750A1 (en) * 2003-04-10 2004-10-14 Versluys Robert Thor Easy-open chub package with heat-sealed ends
US8484937B1 (en) * 2009-03-24 2013-07-16 Land O'lakes, Inc. Methods for sealing overlapped flexible packaging material using an electrical impulse through a conductive element
WO2015157255A1 (en) * 2014-04-08 2015-10-15 B.S.C. Technologies, Inc. Improved zone heat-sealable packaging film and resulting pouch

Citations (3)

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US1691782A (en) * 1925-09-17 1928-11-13 Bemis Bros Bag Company Bag
US2330015A (en) * 1939-08-16 1943-09-21 Stokes & Smith Co Container
US2364943A (en) * 1943-03-13 1944-12-12 Nat Fireworks Inc Container

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Cited By (25)

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US4025375A (en) * 1972-05-23 1977-05-24 Mira-Pak, Inc. Method for continuous welding together of plastic sheets
US4106261A (en) * 1977-08-08 1978-08-15 The Dow Chemical Company Method of forming, filling, and sealing scrim reinforced plastic bags
FR2399949A1 (fr) * 1977-08-08 1979-03-09 Dow Chemical Co Sacs en plastique renforce et procede et appareil pour les preparer
US4224970A (en) * 1978-10-18 1980-09-30 Super Sack Manufacturing Corporation Collapsible receptacle for flowable materials
US4292386A (en) * 1978-12-22 1981-09-29 Tokyo Shibaura Denki Kabushiki Kaisha Photoconductive drum with paper layer attachment
US4274244A (en) * 1979-05-18 1981-06-23 General Electric Company Method and apparatus for sealing polyester film in mine bolt capsule
US4227612A (en) * 1979-06-19 1980-10-14 General Electric Company Two-ply resin capsule for mining roof bolting systems
US4322929A (en) * 1980-03-12 1982-04-06 The Specialty Papers Company Packaging method using an adhesive coated web
US4457456A (en) * 1981-12-31 1984-07-03 Super Sack Manufacturing Company Collapsible receptacle with static electric charge elimination
US4479243A (en) * 1982-05-07 1984-10-23 Super Sack Manufacturing Corporation Collapsible receptacle with prefabricated lift loops and method of making
US6592702B2 (en) 1992-01-10 2003-07-15 Super Sack Mfg. Corp. Anti-static, anti-corrosion, and/or anti-microbial films, fabrics, and articles
US6585843B2 (en) 1992-01-10 2003-07-01 Super Sack Mfg. Corp. Anti-static, anti-corrosion, and/or anti-microbial films, fabrics, and articles
US5480067A (en) * 1993-04-14 1996-01-02 Hilti Aktiengesellschaft Composite foil hose-shaped bag
US5632133A (en) * 1994-02-22 1997-05-27 Wyslotsky; Ihor Method of pre-formed in-line thermofusing of multilayer polymeric films to form packaging components
US5849127A (en) * 1994-03-28 1998-12-15 W. R. Grace & Co.-Conn. Process for making an oxygen permeable multilayer film
US6294210B1 (en) 1994-03-28 2001-09-25 Cryovac, Inc. Oxygen permeable multilayer film
US5638660A (en) * 1994-03-28 1997-06-17 W. R. Grace & Co.-Conn. Packaging process using oxygen-permeable multilayer film
US5524418A (en) * 1994-03-29 1996-06-11 W. R. Grace & Co.-Conn. Process for making a package in a form/fill system
US5951799A (en) * 1995-06-07 1999-09-14 Super Sack Manufacturing Corp. Anti-microbial shoe lining and sock liner and process for manufacture of same
US6651848B1 (en) * 1998-03-18 2003-11-25 Sanford Redmond Tubelike dispenser package
US20040016771A1 (en) * 1998-03-18 2004-01-29 Sanford Redmond Tubelike dispenser package
US20040031823A1 (en) * 2002-07-30 2004-02-19 Sanford Redmond Aperture forming means and package
US20040202750A1 (en) * 2003-04-10 2004-10-14 Versluys Robert Thor Easy-open chub package with heat-sealed ends
US8484937B1 (en) * 2009-03-24 2013-07-16 Land O'lakes, Inc. Methods for sealing overlapped flexible packaging material using an electrical impulse through a conductive element
WO2015157255A1 (en) * 2014-04-08 2015-10-15 B.S.C. Technologies, Inc. Improved zone heat-sealable packaging film and resulting pouch

Also Published As

Publication number Publication date
JPS5435550B1 (es) 1979-11-02
DE2116540A1 (de) 1971-10-28
ES174922Y (es) 1972-12-16
FR2089158A5 (es) 1972-01-07
CA935407A (en) 1973-10-16
BE765292A (fr) 1971-08-30
ES174922U (es) 1972-05-16
GB1339058A (en) 1973-11-28

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