US3471351A - Method and apparatus for producing a packaging material having strip on one side and covering tapes on the other side - Google Patents

Method and apparatus for producing a packaging material having strip on one side and covering tapes on the other side Download PDF

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Publication number
US3471351A
US3471351A US584904A US3471351DA US3471351A US 3471351 A US3471351 A US 3471351A US 584904 A US584904 A US 584904A US 3471351D A US3471351D A US 3471351DA US 3471351 A US3471351 A US 3471351A
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US
United States
Prior art keywords
strip
web
packaging material
tape
tapes
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
US584904A
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English (en)
Inventor
Alfred Fuchs
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.)
Tetra Pak AB
Original Assignee
Tetra Pak AB
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 Tetra Pak AB filed Critical Tetra Pak AB
Application granted granted Critical
Publication of US3471351A publication Critical patent/US3471351A/en
Anticipated expiration legal-status Critical
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    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/812—Applying tabs, patches, strips or strings on blanks or webs
    • B31B50/8122—Applying patches
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/812—Applying tabs, patches, strips or strings on blanks or webs
    • B31B50/8122—Applying patches
    • B31B50/8123—Applying patches the blanks remaining stationary during application of the patches
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1056—Perforating lamina
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1304—Means making hole or aperture in part to be laminated
    • Y10T156/1309—Means making hole or aperture in part to be laminated and securing separate part over hole or aperture

Definitions

  • This invention refers to a web-shaped packaging material of paper, plastic, cardboard or the like, which has been provided with apertures entirely penetrating the material, the apertures being intended to form access openings in the finished packages, said apertures further being covered by removable tapes or wafers on the side of the material intended to define the outside of the packages.
  • the solution suggested in the patent for preventing liquid from being sucked up in the fibrous layer comprises the step of heat sealing the tape to the region of the aperture, which causes some of a polyethylene lamina of the tape to penetrate into the outer portion of the paper lamina of the web-material so that the polyethylene is infused around the fibres thereby impregnating the cut surfaces of the aperture.
  • the method has great merits, it cannot, however, be considered sufliciently safe for the use in producing sterile packages, while in this case the tightness of the packages unconditionally must be guaranteed.
  • such packages which are not leaking in the normal sense of the word but which in any region have their walls wet through, from a bacteriological point of view are considered as leaky.
  • the inner seal consists of a piece of a sheet material which is thin compared with the outer cover.
  • the inner sheet consists of a thin plastic material, which easily might be torn as it is well united with the outer cover.
  • pieces of a thin sheet material are difiicult to work with, which constitutes a drawback of the method.
  • One object of the present invention therefor is to eliminate this drawback by a covering method which is in line with a continuous way of working.
  • the material according to the present invention is characterized therein that a continuous strip of a tearable material covering the apertures is applied to the other side 3,471,351 Patented Oct. 7, 1969 of the packaging material, the strip being aflixed on one hand to the material around and between the apertures, and on the other hand to those portions of the outer tapes which are accessible through the apertures.
  • the invention also aims at a method for producing the material characterized in that the strip together with the web material under compression and active uniting are being brought between a pressure-roller and a counter action means, the strip being fed between the pressure-roller and that surface of the web material which is intended to define the inside of the finished containers, the strip being brought to the apertures and to be affixed on one hand to the packaging material around and between the apertures and on the other hand to portions of the outer tapes accessible through the apertures.
  • the necessary adhesion between the inner strip, the web material and the outer tape is provided preferably therein that the web material and the tape are coated with a thermoplastic layer on the side turned to the strip, and in that the web material together with its tapes is heated immediately prior to its being brought into contact with the strip.
  • the strip preferably consisting of a thin thermoplastic material.
  • FIGURE 1 shows a tetrahedron shaped package which is provided with a tape covering a discharge opening punched in the package wall;
  • FIGURE 2 schematically illustrates how the discharge openings on that side of the package material which is intended to define the inside of the finished containers, are being covered with an inner tightening strip;
  • FIGURE 3 is a section IIIIII in FIGURE 2 in a large scale
  • FIGURE 4 schematically, in a large scale shows a seal obtained according to a method first suggested during the development of the present invention.
  • FIGURE 5 shows a seal obtained by means of a preferred embodiment of the device according to the invention.
  • the package chosen by way of example and to which the principles of the invention are intended to be applied consists, as is apparent from FIGURE 1, of a tetrahedronshaped container of a well-known kind.
  • the package has in a way known in the art been made of a webshaped packaging material, which by special means has been formed into a tube.
  • the tube having been longitudinally sealed, filled up to a certain level with a filling material, sealed and severed in sealing zones transverse to the tube axis.
  • the invention has been developed for the use in an aseptic machine, i.e. a machine which under aseptic conditions fills sterile package containers with a sterile filling material.
  • the web material is sterilized prior to its being fed into the sterile machine.
  • the web material is sterilized therein that it is fed through a sterilizing bath as will be shown in the following.
  • the packaging container shown in FIGURE 1 has in a well-known manner been provided with transverse seal fins TF and a longitudinal seam LS. Positioned in one of the four corners of the container there is a discharge opening 1 punched in the package wall. The discharge opening is exteriorly covered by a tape 2 sealed to the portion of the wall surrounding the opening. An end portion 2a of the tape is unsealed to the container to provide a pull-tab for removing the tape when access to the contents of the container is desired. Interiorly the container is further provided with a strip of a thin thermoplastic material. The strip has been indicated by dash lines in the figure and designated 3.
  • the strip has been sealed to the tape 2 in the region of the aperture 1 in a manner which will be more closely described with reference to the following, so that when the tape is torn away a piece of the inner strip will be removed whereby a passage through the aperture is established.
  • FIGURE 2 a process for the manufacturing the packaging material is schematically illustrated.
  • 4 refers to a web-shaped packaging material which at a projected machine is intended to consist of a paper which on the side intended to define the inside of the packages has been provided with a plastic coating.
  • the material also comprises an aluminum lamina.
  • other materials e.g. two-side-plasticcoated materials.
  • the present invention has its greatest importance for such materials which for economical or other reasons have been provided with a plastic coating only on one side.
  • the web material is continuously or intermittently unwound from a supply roll 5; guided over conducting rollers 6, 7 and 8; through a sterilizer 9 in which the plastic coated surface is treated with a sterilizing agent; and into a sterile chamber 10 in which the sterile material is formed into a tube which in a well-known manner under aseptic conditions is filled and separated into closed packages,
  • aperture 1 are punched by means of a puncher 11 penetrating the material 4, the apertures being covered by tapes 2.
  • the tapes preferably consist of plastic strips or plastic coated paper strips which prior to their being applied are heated, so that they when being mounted will adhere to the web material.
  • a strip 3 consisting of a thin thermoplastic material, e.g. polyethylene, is unwound from a supply roll 13.
  • the strip 3 is guided between a cross-knurled pressureroller 14 and the web material 4 by being driven by the web material which is pulled upward between the pressure roller 14 and a counter action roller 15.
  • the two rollers are supported in bearings and are rotated by the web material 4. Further, they are forced against each other thereby compressing the web material 4; the strip 3; and the tapes 2, so that the strip 3 is united with the soft made plastic coating.
  • the counter action roller 15 is preferably made of a soft rubber.
  • FIGURE 3 is more closely illustrated how the uniting of the inner strip 3 and the outer tape 2 is carried out.
  • the counter action roller 15 is as mentioned made of a rather soft rubber material and the pressure roller 14 is made of Teflon and is crossknurled. The cuts have been made to a depth of 0.6 mm. whereupon the apexes have been smoothed off one or a few tenths of a millimetre.
  • the paper qualities (the packaging material 4) for which the apparatus is intended to be used have a thickness of 0.15 to 0.30 mm. In the region of the access openings the thickness is increased to substantially twice as much due to the tapes 2.
  • the inner strip 3 has a breadth of about 10 mm. and a thickness of 0.05 mm.
  • FIGURE 5 a typical sealing pattern obtained by means of the device accordmg to the invention. The sealing has been carried out 1n a number of small rhombidic areas corresponding to the apexes of the knurled pattem.
  • FIGURE 3 a knurled apex in turn to force a piece of the strip 3 into the aperture 1 into contact with the tape 2 has been designated 16.
  • FIGURE 4 As a comparison there is in FIGURE 4 shown a seal obtained by means of the device which was first proposed during the development of the present invention, i.e. a device wherein the pressure roller consists of a flexible rubber roller. Due to the fact that one in this case cannot obtain as high surface pressures as when utilizing a firm knurled roller the thickness of the packaging material will have an essential influence upon the result. Contact between the inner strip 3 and the outer tape 2 thus only will occur within a rather small portion of the aperture 1. Further it is not only desirable that the two materials are brought into contact with each other but far rather that they are firmly compressed within the contact regions.
  • the invention is not limited by the described embodiment of the invention but only of the attached claims.
  • the apertures 1 need not have the shown circular shape.
  • the applications of the invention of course are not restricted to tetrahedron-shaped packages.
  • modifications of the counter-action means as well as of other members of course are possible to carry out without departing from the spirit and scope of the invention.
  • a method of producing web shaped packaging material with pull tab openings therein comprising the steps of: supplying a web of packaging material, creating a series of openings therein, sealing a tab over each opening on one side of said web of material, supplying a con tinuous strip of material to the other side of said web of material over said apertures, and sealing said continuous strip of material to said other side of said web material and to that portion of said tab over said aperture which is accessible through said opening.
  • Apparatus to form a web material with sealed openings therein comprising: means to supply a moving web of packaging materials, means to provide a plurality of spaced openings in said materials, means to seal a pull tab over each of said openings on one side of said web material, means supplying a continuous strip of sealant material to the other side of said web material and means to seal said continuous strip of sealant material to said other side of said Web material, to a portion of said pull tab accessible through said apertures and to the edges of said apertures.
  • said means to seal said sealant material includes a pressure roller and a counter action means.

Landscapes

  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Laminated Bodies (AREA)
  • Packages (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
US584904A 1966-04-12 1966-10-06 Method and apparatus for producing a packaging material having strip on one side and covering tapes on the other side Expired - Lifetime US3471351A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE4881/66A SE314578B (enrdf_load_stackoverflow) 1966-04-12 1966-04-12

Publications (1)

Publication Number Publication Date
US3471351A true US3471351A (en) 1969-10-07

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US584904A Expired - Lifetime US3471351A (en) 1966-04-12 1966-10-06 Method and apparatus for producing a packaging material having strip on one side and covering tapes on the other side

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US (1) US3471351A (enrdf_load_stackoverflow)
CY (1) CY514A (enrdf_load_stackoverflow)
GB (1) GB1149545A (enrdf_load_stackoverflow)
SE (1) SE314578B (enrdf_load_stackoverflow)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790424A (en) * 1971-01-07 1974-02-05 Deering Milliken Res Corp Pull tab apparatus
US3948711A (en) * 1974-02-11 1976-04-06 Kraftco Corporation Method and apparatus for making dispensers
US4266993A (en) * 1978-05-02 1981-05-12 Tetra Pak International Ab Method for the sealing of a cover strip onto packing containers
US4538396A (en) * 1980-05-22 1985-09-03 Kenji Nakamura Process for producing a re-sealable dispenser-container
US4557398A (en) * 1984-08-17 1985-12-10 International Paper Company End closure structure for a container
US4616470A (en) * 1979-12-03 1986-10-14 Konji Nakamura Method of forming re-sealable dispenser-container
FR2584679A1 (fr) * 1985-07-10 1987-01-16 Gambetti Mario Baumer Appareil pour l'application de rubans de materiau sur une bande d'emballage dans des machines d'emballage pour la formation d'une poignee sur les objets emballes
US5098365A (en) * 1988-12-16 1992-03-24 Ab Profor Method of connecting a gripping device to sheet or web-formed packaging material
US5335478A (en) * 1993-01-08 1994-08-09 Aronsen Arthur N Multi-compartment dispenser pouch and method of making
US5979653A (en) * 1997-12-24 1999-11-09 Cryovac, Inc. Peel mechanism for peelable barrier film for vacuum skin packages and the like
US6328203B1 (en) * 2001-05-04 2001-12-11 International Paper Company Opening feature for beverage container
US20030047470A1 (en) * 1997-12-04 2003-03-13 British American Tobacco (Investments) Limited Packaging of smoking articles
US20040011677A1 (en) * 2002-06-24 2004-01-22 Fuji Machinery Co., Ltd. Form-fill sealing machines, resealable flexible packages and methods of manufacturing resealable flexible packages
US6722104B1 (en) * 1998-05-29 2004-04-20 Upm-Kymmene Corporation Method and packaging machine for forming a container, a blank web and a filled container
US20180362235A1 (en) * 2017-06-20 2018-12-20 Shanghai ZhouTai Light Industry Machinery Manufacturing Co., Ltd Packaging bag, apparatus and method for manufacturing film material of the packaging bag, and method of manufacturing the packaging bag

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE462743B (sv) * 1988-12-16 1990-08-27 Profor Ab Saett att foerbinda ett griporgan med ett ark eller banformigt foerpackningslaminat

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899347A (en) * 1959-08-11 Method of making bag closure
US3336845A (en) * 1965-03-30 1967-08-22 Albemarle Paper Co Multi-ply bag and process for the manufacture thereof
US3361611A (en) * 1965-04-05 1968-01-02 Tetra Pak Ab Method of covering a stamped hole in a laminated packaging material by means of a wafer or the like, and a package to which the method has been applied

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899347A (en) * 1959-08-11 Method of making bag closure
US3336845A (en) * 1965-03-30 1967-08-22 Albemarle Paper Co Multi-ply bag and process for the manufacture thereof
US3361611A (en) * 1965-04-05 1968-01-02 Tetra Pak Ab Method of covering a stamped hole in a laminated packaging material by means of a wafer or the like, and a package to which the method has been applied

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790424A (en) * 1971-01-07 1974-02-05 Deering Milliken Res Corp Pull tab apparatus
US3948711A (en) * 1974-02-11 1976-04-06 Kraftco Corporation Method and apparatus for making dispensers
US4266993A (en) * 1978-05-02 1981-05-12 Tetra Pak International Ab Method for the sealing of a cover strip onto packing containers
US4616470A (en) * 1979-12-03 1986-10-14 Konji Nakamura Method of forming re-sealable dispenser-container
US4538396A (en) * 1980-05-22 1985-09-03 Kenji Nakamura Process for producing a re-sealable dispenser-container
US4557398A (en) * 1984-08-17 1985-12-10 International Paper Company End closure structure for a container
FR2584679A1 (fr) * 1985-07-10 1987-01-16 Gambetti Mario Baumer Appareil pour l'application de rubans de materiau sur une bande d'emballage dans des machines d'emballage pour la formation d'une poignee sur les objets emballes
US5098365A (en) * 1988-12-16 1992-03-24 Ab Profor Method of connecting a gripping device to sheet or web-formed packaging material
US5335478A (en) * 1993-01-08 1994-08-09 Aronsen Arthur N Multi-compartment dispenser pouch and method of making
US20030047470A1 (en) * 1997-12-04 2003-03-13 British American Tobacco (Investments) Limited Packaging of smoking articles
US6826889B2 (en) * 1997-12-04 2004-12-07 British American Tobacco Limited Packaging of smoking articles
US5979653A (en) * 1997-12-24 1999-11-09 Cryovac, Inc. Peel mechanism for peelable barrier film for vacuum skin packages and the like
US6722104B1 (en) * 1998-05-29 2004-04-20 Upm-Kymmene Corporation Method and packaging machine for forming a container, a blank web and a filled container
US6328203B1 (en) * 2001-05-04 2001-12-11 International Paper Company Opening feature for beverage container
US20040011677A1 (en) * 2002-06-24 2004-01-22 Fuji Machinery Co., Ltd. Form-fill sealing machines, resealable flexible packages and methods of manufacturing resealable flexible packages
US6865860B2 (en) * 2002-06-24 2005-03-15 Fuji Machinery Co., Ltd. Form-fill sealing machines, resealable flexible packages and methods of manufacturing resealable flexible packages
US20180362235A1 (en) * 2017-06-20 2018-12-20 Shanghai ZhouTai Light Industry Machinery Manufacturing Co., Ltd Packaging bag, apparatus and method for manufacturing film material of the packaging bag, and method of manufacturing the packaging bag
US10640272B2 (en) * 2017-06-20 2020-05-05 Shanghai Zhoutai Light Industry Machinery Manufacturing., Ltd Packaging bag, apparatus and method for manufacturing film material of the packaging bag, and method of manufacturing the packaging bag

Also Published As

Publication number Publication date
SE314578B (enrdf_load_stackoverflow) 1969-09-08
GB1149545A (en) 1969-04-23
CY514A (en) 1969-12-22

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