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US20180251248A1 - Heat Shrink Film with Increased Tear Strength. - Google Patents

Heat Shrink Film with Increased Tear Strength. Download PDF

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Publication number
US20180251248A1
US20180251248A1 US15/450,965 US201715450965A US2018251248A1 US 20180251248 A1 US20180251248 A1 US 20180251248A1 US 201715450965 A US201715450965 A US 201715450965A US 2018251248 A1 US2018251248 A1 US 2018251248A1
Authority
US
United States
Prior art keywords
film
bundle
heat
heat shrink
folded edges
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
US15/450,965
Inventor
Alain Cerf
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US15/450,965 priority Critical patent/US20180251248A1/en
Priority to EP18159387.2A priority patent/EP3372517A1/en
Publication of US20180251248A1 publication Critical patent/US20180251248A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/54—Wrapping by causing the wrapper to embrace one end and all sides of the contents, and closing the wrapper onto the opposite end by forming regular or irregular pleats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • B65B41/16—Feeding webs from rolls by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/14—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for incorporating, or forming and incorporating, handles or suspension means in packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
    • B65B53/063—Tunnels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/15—Roller assembly, particular roller arrangement

Definitions

  • This invention is related to film wrapping bundles of articles or articles with heat shrink film by providing a film having better tear strength when lifting the bundle.
  • a bundle is defined to include an article or a collection of articles.
  • the objective of this invention is to eliminate the need for a thicker film. By folding the film edges of a thinner film to create an overlap, the tear strength of the openings is substantially increased.
  • FIG. 1 shows a unshrunk film being threaded between film folding rollers to fold the edges of the film to a sustainably vertical position.
  • FIG. 2 shows a static seal
  • FIG. 3 shows a heat shrink film wrapped bundle 11 having folded edges
  • FIG. 1 shows unshrunk film 1 being threaded between film folding rollers 2 and 3 , and 4 and 5 to fold the edges of the film to a sustainably vertical position, Afterwards the edges are pressed down by the rod 6 to create a folded edge. Usually a one inch fold is sufficient to achieve a desired tear strength. Electrostatically sealer 7 treats the folded edges to maintain the fold. Other sealing devices can be used such as heat or glue to maintain the fold.
  • the heat shrink film with the folded edges can be substituted for any film used for film wrapping bundles or articles with a heat shrink film.
  • U.S. Pat. No. 9,216,832 issued on Dec. 22, 2015, U.S. Pat. No. 7,836,670 issued on Nov. 23, 2010 and U.S. Pat. No. 6,761,014 issued on Jul. 13, 2004 invented by Alain Cerf are incorporated by reference in their entirety. These patents show various conventional film wrapping bundle technologies with heat shrink film
  • FIG. 3 shows a heat shrink film wrapped bundle 11 having folded edges.
  • the film is heat shrunk in a heat shrink tunnel.
  • the heat shrunk bundle 12 creates an opening 10 with folded film edges 9 on opposite sides of the bundle. During heat shrinking the folded edges can bond together to further increase the tear resistance when manually lifting the product.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Wrappers (AREA)

Abstract

This invention is related to film wrapping bundles of articles or articles with heat shrink film by providing a film having folded edges to increase tear resistance.

Description

    FIELD OF THE INVENTION
  • This invention is related to film wrapping bundles of articles or articles with heat shrink film by providing a film having better tear strength when lifting the bundle. A bundle is defined to include an article or a collection of articles.
    • BACKGROUND OF THE INVENTION
  • After heat shrinking a film wrapped bundle moving on a conveyor, the sides of the bundles are not covered with the film. This creates an opening on each side of the bundle for manually lifting the bundle by gripping the film through the opening. To reduce the risk of tearing during the manually lifting of the bundle, the prior art has increased the thickness of the film to resist the tearing of the film.
  • The objective of this invention is to eliminate the need for a thicker film. By folding the film edges of a thinner film to create an overlap, the tear strength of the openings is substantially increased.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows a unshrunk film being threaded between film folding rollers to fold the edges of the film to a sustainably vertical position.
  • FIG. 2 shows a static seal.
  • FIG. 3 shows a heat shrink film wrapped bundle 11 having folded edges
    •  DETAILED DESCRIPTION OF THE INVENTION
  • FIG. 1 shows unshrunk film 1 being threaded between film folding rollers 2 and 3, and 4 and 5 to fold the edges of the film to a sustainably vertical position, Afterwards the edges are pressed down by the rod 6 to create a folded edge. Usually a one inch fold is sufficient to achieve a desired tear strength. Electrostatically sealer 7 treats the folded edges to maintain the fold. Other sealing devices can be used such as heat or glue to maintain the fold. The heat shrink film with the folded edges can be substituted for any film used for film wrapping bundles or articles with a heat shrink film. U.S. Pat. No. 9,216,832 issued on Dec. 22, 2015, U.S. Pat. No. 7,836,670 issued on Nov. 23, 2010 and U.S. Pat. No. 6,761,014 issued on Jul. 13, 2004 invented by Alain Cerf are incorporated by reference in their entirety. These patents show various conventional film wrapping bundle technologies with heat shrink film
  • FIG. 3 shows a heat shrink film wrapped bundle 11 having folded edges. Usually the film is heat shrunk in a heat shrink tunnel. The heat shrunk bundle 12 creates an opening 10 with folded film edges 9 on opposite sides of the bundle. During heat shrinking the folded edges can bond together to further increase the tear resistance when manually lifting the product.

Claims (8)

1. A process for increasing the tear resistance of a heat shrunk film wrapped around an bundle comprising,
providing a heat shrink film with folded edges,
film wrapping the bundle with the heat shrink film having folded edges, and
heat shrinking the film wrapping the bundle.
2. A process according to claim 1 wherein the folded edges are treated to maintain the fold in its proper position.
3. A process according to claim 1 wherein a heat shrink tunnel heat shrinks the film.
4. A product produced by the process of claim 1.
5. A bundle comprising
a heat shrunk film having folded edges wrapped around the bundle, and openings in the film on opposite sides of the bundle where the edges of opening are folded thereby increasing the tear resistance when manually gripping the folded film to lift the bundle.
6. An apparatus for increasing the tear resistance of heat shrunk film wrapped around bundle comprising,
means for forming a heat shrink film with folded edges, means for film wrapping the bundle with the heat shrink film having folded edges, and means for heat shrinking the film wrapping the bundle.
7. An apparatus according to claim 6 wherein the folded edges are treated to maintain the fold in its proper position.
8. An apparatus according to claim 6 wherein a heat shrink tunnel heat shrinks the film.
US15/450,965 2017-03-06 2017-03-06 Heat Shrink Film with Increased Tear Strength. Abandoned US20180251248A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US15/450,965 US20180251248A1 (en) 2017-03-06 2017-03-06 Heat Shrink Film with Increased Tear Strength.
EP18159387.2A EP3372517A1 (en) 2017-03-06 2018-03-01 Heat shrink film with increased tear strength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15/450,965 US20180251248A1 (en) 2017-03-06 2017-03-06 Heat Shrink Film with Increased Tear Strength.

Publications (1)

Publication Number Publication Date
US20180251248A1 true US20180251248A1 (en) 2018-09-06

Family

ID=61526713

Family Applications (1)

Application Number Title Priority Date Filing Date
US15/450,965 Abandoned US20180251248A1 (en) 2017-03-06 2017-03-06 Heat Shrink Film with Increased Tear Strength.

Country Status (2)

Country Link
US (1) US20180251248A1 (en)
EP (1) EP3372517A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220010801A (en) * 2020-07-20 2022-01-27 이찬희 Hand wrapping tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200156841A1 (en) * 2018-11-19 2020-05-21 Alain Cerf Heat Shrink Film with Increased Tear Strength

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1341644A (en) * 1919-11-22 1920-06-01 Hoffman Products Corp Fuel-oil burner

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1341644A (en) * 1971-12-20 1973-12-25 Schweppes Ltd Shrink wrapping of articles
FR2617123B1 (en) * 1987-06-26 1989-12-29 Newtec Int TAPE WITH LONGITUDINAL REINFORCEMENT, PACKAGING METHOD AND PACKAGING COMPRISING SUCH A TAPE, INSTALLATION AND MACHINE FOR CARRYING OUT THE PACKAGING PROCESS, AND DEVICE FOR CARRYING OUT SUCH A TAPE
US4956963A (en) * 1988-11-14 1990-09-18 Nordson Corporation Method of sealing a shrink wrap package
FR2651481B1 (en) * 1989-09-06 1991-12-20 Newtec Int FILM RELEASE TROLLEY FOR PACKAGING MACHINE.
US6761014B2 (en) 2002-08-16 2004-07-13 Alain Cerf Apparatus and process for wrapping articles on a conveyer
US7836670B2 (en) 2006-10-18 2010-11-23 Alain Cerf Perforated film wrapping machine
US9216832B2 (en) 2010-05-24 2015-12-22 Alain Cerf Heat shrinkable bubble wrapping machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1341644A (en) * 1919-11-22 1920-06-01 Hoffman Products Corp Fuel-oil burner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220010801A (en) * 2020-07-20 2022-01-27 이찬희 Hand wrapping tool
KR102398900B1 (en) 2020-07-20 2022-05-17 이찬희 Hand wrapping tool

Also Published As

Publication number Publication date
EP3372517A1 (en) 2018-09-12

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STCB Information on status: application discontinuation

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