US3497131A - Package with easy opening device - Google Patents

Package with easy opening device Download PDF

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Publication number
US3497131A
US3497131A US730411A US3497131DA US3497131A US 3497131 A US3497131 A US 3497131A US 730411 A US730411 A US 730411A US 3497131D A US3497131D A US 3497131DA US 3497131 A US3497131 A US 3497131A
Authority
US
United States
Prior art keywords
package
film
tear strip
margins
seam
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
US730411A
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English (en)
Inventor
Alan C Tracy
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.)
Kartridg Pak Co
Original Assignee
Kartridg Pak Co
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 Kartridg Pak Co filed Critical Kartridg Pak Co
Application granted granted Critical
Publication of US3497131A publication Critical patent/US3497131A/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
    • 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
    • B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
    • B65D75/06—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes
    • B65D75/10—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes with the ends of the tube closed by twisting
    • 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
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/66—Inserted or applied tearing-strings or like flexible elements
    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C13/00—Sausage casings
    • A22C2013/0036—Sausage casings with features allowing an easy opening and/or removal of the casing

Definitions

  • This invention relates to packaging and is more particularly concerned with improvements in a package which is formed of plastic film and which has a tear strip means for facilitating opening of the package.
  • a film is employed which generally has a relatively high resistance to tearing or puncturing so as to withstand, without injury, the relatively rough handling encountered in the marketing of the package.
  • the package has a longitudinal or axially extending seal formed in overlapping margins of the film material which has been eifected by the use of electronic equipment resulting in the welding of the plastic film along a relatively narrow line.
  • this package is formed from a film having a low moisture transmitting characteristic, for example, Saran, which has been used extensively for packaging meat products, the resultant package has a relatively long shelf life and the product is not subject to rapid deterioration.
  • a further object of the invention is to provide in a tubular package having a longitudinal seam formed in overlapping margins of the packaging film and with the ends gathered and closed by bendable clips, an easy opening device which is in the form of a tear strip interposed between the film margins forming the longitudinal seam and extending the full length of the package with its ends anchored by the end closure clips.
  • Another object of the invention is to provide a tubular package having a relatively narrow, longitudinally extending seal formed in overlapping margins of the packaging film and end seals formed by gathering the tubular material and applying a bendable metal clip, wherein a tear strip which is formed of a material having a tear strength greater than the packaging film is interposed between the overlapped film margins and sealed to the oppositely disposed faces thereof with the tear strip extending the length of the package so that the ends are anchored by the end closure clips and with a side marginal portion extending outside of the seal forming area and accessible so that it may be gripped and torn to break the seal and open the package.
  • Still another object of the invention is to provide in a tubular package having a longitudinal seal formed by overlapping marginal portions of the packaging film, a longitudinally extending tear strip interposed between the seal forming margins with the side edge extending to the exterior of the package where it is accessible so as to be gripped and pulled to tear the package open, and spaced transverse slits in the exposed side edge of the tear strip for facilitating the tearing of the packaging material either transversely of the seam or longitudinally thereof.
  • FIGURE 1 is a perspective view illustrating a package of tubular form which has incorporated therein the principal features of the invention
  • FIGURE 2 is a cross sectional perspective to an enlarged scale, taken on the line 2-2 of FIGURE 1;
  • FIGURE 3 is a fragmentary cross section through the seal area, to a still larger scale, the view showing the laminated tear strip element employed in the package of FIGURE 1;
  • FIGURE 4 is a perspective view, largely schematic, illustrating the method of forming the package of FIGURE 1.
  • FIGURES 1 and 2 of the drawings there is illustrated a package 10 which has incorporated therein an easy opening device embodying the principles of the invention.
  • the package 10 is in the form of a tube and is adapted to be fabricated from a single length of plastic film 11.
  • the particular type of film employed will depend upon the nature of the product which is to be packaged.
  • the preferred packaging material is Saran which is highly resistant to the transfer of moisture and serves to retain the flavor in the product and resist deterioration so as to provide a relatively long shelf life.
  • Other film materials may be employed such as Pliofilm, polyethylene and the like, depending upon the nature of the product and the characteristics desired in the film.
  • the tubular shape is accomplished by overlapping and sealing the side marginal portions 12 and 14 of the film 11.
  • a relatively narrow tear strip 15 is interposed between the overlapped margins 12 and 14 of the film 11 and an RF or electronic type seal 16 joins the tear strip 15 to the overlying and underlying film margins 12 and 14 throughout the length of the package.
  • the package 10 is closed at its opposite ends by gathering the tube material and applying bendable clips 17 and 17' which may be formed, for example, of a suitable metal such as aluminum.
  • the tear strip 15 extends the entire length of the package 10 so that its ends are anchored in the end seals formed by the clips 17 and 17'.
  • the tear strip 15 is formed as a laminate (FIGURE 3) with an interior ply 18 and exterior plies 20 and 20'.
  • the packaging material is Saran
  • the exterior plies 20 and 20' are preferably the same material so as to readily seal with the packaging film when the electronic sealing occurs as shown in FIGURE 3.
  • the inner ply 18 is chosen for its tensile strength and resistance to the sealing action.
  • a polyester film may be employed with the Saran which is not affected by electronic sealing but which may be surface bonded by heat or by other sealing methods to the Saran so as to form a laminate.
  • Other combinations of materials may be employed with an adhesive bond between the plies of the tear strip which will prevent delamination and with the center ply unaffected by the seam sealing action so as to permit tearing across the seal.
  • the tear strip may be opaque, translucent or a constrasting color, as desired.
  • a pair of slits 21 and 22 are cut in the exposed margin of the tear strip 15 and adjacent portions of the outer film margin 12.
  • the slits 21 and 22 extend in a direction transversely of the longitudinal axis of the tube and are of sufficient length to extend into the margin of the packaging film but terminating short of the seal 16, as shown in FIGURES 1 and 2.
  • the material between the slits 21 and 22, indicated at 23, may be grasped and pulled in the direction of the seam or seal 16 to tear around the circumference of the package for opening the same. If desired, the material may be grasped adjacent the slit 21 in FIGURE 1 and pulled in the longitudinal direction across the longitudinal seam 16 to tear along the latter for opening the package.
  • the present package may be most conveniently made by feeding a continuous web W of a film material which is suitable for forming the package over the end of a hollow mandrel M through which the product is fed, folding the web to overlap side margins of the same and simultaneously feeding a continuous web T of the tear strip material between the overlapped film margins with the one side edge extending beyond the outside lap of the film material, sealing the multi-ply material formed by the overlapped film margins and the tear strip by means of an electronic sealing mechanism, indicated at S, so as to provide a continuous longitudinal seam, applying pairs of transverse slits 21 and 22 at the proper intervals by means of a slitting knife and co-operating anvil assembly, indicated at C, constricting the filled tube at intervals after it advances beyond the discharge end of the mandrel M, applying pairs of the closure clips 17, 17' to the constricted sections of the tube and cutting between the clips 17 and 17' of each pair thereof.
  • These operations may be carried out mechanically by proper modification of the package forming machine disclosed
  • a tear strip interposed between said overlapped side margins and sealed thereto, said tear strip having a tensile strength greater than said film, said tear strip extending substantially the full length of the longitudinal seam and having a side edge portion projecting beyond the seam which edge portion is free so that it may be grasped and pulled back across the seam area to tear open the package.
  • said tear strip having a plurality of plies of material with outermost plies being a material which is readily sealable with the overlapped film margins in the seam area, and being joined thereto in said seam area, and with an inner ply of a material which is not affected by the seam sealing action and which will result in tearing of the film material when the projecting edge of the tear strip is grasped and pulled back across the seam area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
US730411A 1968-05-20 1968-05-20 Package with easy opening device Expired - Lifetime US3497131A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73041168A 1968-05-20 1968-05-20

Publications (1)

Publication Number Publication Date
US3497131A true US3497131A (en) 1970-02-24

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ID=24935239

Family Applications (1)

Application Number Title Priority Date Filing Date
US730411A Expired - Lifetime US3497131A (en) 1968-05-20 1968-05-20 Package with easy opening device

Country Status (3)

Country Link
US (1) US3497131A (xx)
DE (1) DE1908851A1 (xx)
GB (1) GB1230352A (xx)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641732A (en) * 1970-03-05 1972-02-15 Masaaki Fujio Method of packaging packs or articles with a heat-shrinking material
US3674134A (en) * 1970-03-13 1972-07-04 Kay Laboratories Inc Rupturable container
US3737027A (en) * 1970-09-01 1973-06-05 Ici Ltd Composite cartridge pack for hardening resins
US4364511A (en) * 1975-05-16 1982-12-21 Naturin-Werk Becker & Co. Closure tie for tubes of film material for enclosing food, a method of forming the tie and apparatus for carrying out this method
US4688299A (en) * 1986-01-08 1987-08-25 Viskase Corporation Stuffing method
US4734956A (en) * 1986-01-08 1988-04-05 Viskase Corporation Food casing article
US4744466A (en) * 1981-12-08 1988-05-17 Chase Bag Company Quick opening pinch seal bag
US4746226A (en) * 1985-10-24 1988-05-24 Bramlage Gesellschaft Mit Beschraenkter Haftung Packaging container
US4747491A (en) * 1986-06-03 1988-05-31 Rayovac Corporation Tab-opening container
US4787507A (en) * 1986-04-28 1988-11-29 Ab Tetra Pak Liquid pack, method of manufacture thereof and plastics web for an opening strip for the pack
US5129518A (en) * 1989-12-22 1992-07-14 Okura Industrial Co., Ltd. Plastic film package with perforated edge portions
US5409115A (en) * 1991-03-08 1995-04-25 Lohmann Gmbh & Co. Kg Tubular bag packaging, for bandage-like materials in particular
US5470015A (en) * 1991-09-13 1995-11-28 Teich Aktiengesellschaft Tubular pouch with opening aid
US5582342A (en) * 1993-07-08 1996-12-10 Teich Aktiengesellschaft Tear-off package with pull-tab
US6672597B1 (en) * 1999-09-17 2004-01-06 Illbruck Gmbh Sealing strip for sealing a joint
US20050025871A1 (en) * 2003-06-17 2005-02-03 Shoshan Legi Gil Spreadable butter product
DE102007021048A1 (de) * 2007-05-04 2008-11-06 Poly-Clip System Gmbh & Co. Kg Aufreißstreifen und Verfahren zu dessen Bereitstellung
US20100181370A1 (en) * 2009-01-20 2010-07-22 Curwood, Inc. Peelable Film and Package Using Same
EP2319775A1 (en) * 2009-11-09 2011-05-11 Curwood, Inc. Easy-open packages formed from peelable thermoplastic laminates
DK201500154Y4 (en) * 2015-06-09 2017-05-15 Novaplot Entpr Ltd Package for thermally processed meat-based product, with an easy-opening ability

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2121564A (en) * 1935-05-16 1938-06-21 Girdler Corp Frozen comestible package
US2811455A (en) * 1955-11-22 1957-10-29 Borden Co Container for leavened dough
US3362615A (en) * 1964-06-04 1968-01-09 Purex Corp Ltd Container and package
US3391617A (en) * 1966-08-03 1968-07-09 Big Drum Inc Method and machine for forming paper cones

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2121564A (en) * 1935-05-16 1938-06-21 Girdler Corp Frozen comestible package
US2811455A (en) * 1955-11-22 1957-10-29 Borden Co Container for leavened dough
US3362615A (en) * 1964-06-04 1968-01-09 Purex Corp Ltd Container and package
US3391617A (en) * 1966-08-03 1968-07-09 Big Drum Inc Method and machine for forming paper cones

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641732A (en) * 1970-03-05 1972-02-15 Masaaki Fujio Method of packaging packs or articles with a heat-shrinking material
US3674134A (en) * 1970-03-13 1972-07-04 Kay Laboratories Inc Rupturable container
US3737027A (en) * 1970-09-01 1973-06-05 Ici Ltd Composite cartridge pack for hardening resins
US4364511A (en) * 1975-05-16 1982-12-21 Naturin-Werk Becker & Co. Closure tie for tubes of film material for enclosing food, a method of forming the tie and apparatus for carrying out this method
US4744466A (en) * 1981-12-08 1988-05-17 Chase Bag Company Quick opening pinch seal bag
US4746226A (en) * 1985-10-24 1988-05-24 Bramlage Gesellschaft Mit Beschraenkter Haftung Packaging container
US4688299A (en) * 1986-01-08 1987-08-25 Viskase Corporation Stuffing method
US4734956A (en) * 1986-01-08 1988-04-05 Viskase Corporation Food casing article
US4787507A (en) * 1986-04-28 1988-11-29 Ab Tetra Pak Liquid pack, method of manufacture thereof and plastics web for an opening strip for the pack
US4747491A (en) * 1986-06-03 1988-05-31 Rayovac Corporation Tab-opening container
US5129518A (en) * 1989-12-22 1992-07-14 Okura Industrial Co., Ltd. Plastic film package with perforated edge portions
US5409115A (en) * 1991-03-08 1995-04-25 Lohmann Gmbh & Co. Kg Tubular bag packaging, for bandage-like materials in particular
US5470015A (en) * 1991-09-13 1995-11-28 Teich Aktiengesellschaft Tubular pouch with opening aid
US5582342A (en) * 1993-07-08 1996-12-10 Teich Aktiengesellschaft Tear-off package with pull-tab
US6672597B1 (en) * 1999-09-17 2004-01-06 Illbruck Gmbh Sealing strip for sealing a joint
US20050025871A1 (en) * 2003-06-17 2005-02-03 Shoshan Legi Gil Spreadable butter product
DE102007021048A1 (de) * 2007-05-04 2008-11-06 Poly-Clip System Gmbh & Co. Kg Aufreißstreifen und Verfahren zu dessen Bereitstellung
US20080274313A1 (en) * 2007-05-04 2008-11-06 Poly-Clip System Gmbh & Co. Kg Tear strip and a method for providing same
US20100181370A1 (en) * 2009-01-20 2010-07-22 Curwood, Inc. Peelable Film and Package Using Same
US8679604B2 (en) 2009-01-20 2014-03-25 Curwood, Inc. Peelable film and package using same
EP2319775A1 (en) * 2009-11-09 2011-05-11 Curwood, Inc. Easy-open packages formed from peelable thermoplastic laminates
EP2426066A1 (en) * 2009-11-09 2012-03-07 Curwood, Inc. Easy-open packages formed from peelable thermoplastic laminates
DK201500154Y4 (en) * 2015-06-09 2017-05-15 Novaplot Entpr Ltd Package for thermally processed meat-based product, with an easy-opening ability

Also Published As

Publication number Publication date
GB1230352A (xx) 1971-04-28
DE1908851A1 (de) 1970-01-15

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