WO1983004001A1 - Procedure for manufacturing a tube casing - Google Patents

Procedure for manufacturing a tube casing Download PDF

Info

Publication number
WO1983004001A1
WO1983004001A1 PCT/FI1983/000032 FI8300032W WO8304001A1 WO 1983004001 A1 WO1983004001 A1 WO 1983004001A1 FI 8300032 W FI8300032 W FI 8300032W WO 8304001 A1 WO8304001 A1 WO 8304001A1
Authority
WO
WIPO (PCT)
Prior art keywords
foil
procedure
tube
manufacturing
margin
Prior art date
Application number
PCT/FI1983/000032
Other languages
French (fr)
Inventor
Antero Mäkilaakso
Original Assignee
Huhtamäki Oy
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 Huhtamäki Oy filed Critical Huhtamäki Oy
Publication of WO1983004001A1 publication Critical patent/WO1983004001A1/en
Priority to GB848400718A priority Critical patent/GB8400718D0/en

Links

Classifications

    • 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
    • B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C1/00—Making tubes or pipes by feeding at right angles to the winding mandrel centre line
    • 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
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
    • B65D1/28—Thin-walled containers, e.g. formed by deep-drawing operations formed of laminated material

Definitions

  • the present invention concerns a procedure for manufacturing a foil for a container, e.g. a tube, wherein one side of the foil is coated partly at least with a plastic film.
  • the foil usually consists of aluminium of which the surface is protection-varnished with a hot seam protective varnish.
  • the foil is cut off to constitute a piece of suitable length and is wrapped around a mandrel, whereupon it is heated to a temperature high enough to cause the hot seam protective varnish to glue the courses fast to each other.
  • the drawback is that the inner surface facing against the mandrel also is heated and the foil adheres to the mandrel. Therefore the protective varnish film is quite likely to suffer rupture, and the material kept in the tube will come into contact with the metal.
  • the margins of the foil tend to remain bare. Since always one of the two margins is positioned inside the tube, the risk is present that the product with which the tube is filled comes into contact with the foil metal.
  • the object of the invention is to eliminate the drawbacks mentioned and to afford, alternatively, a solution that is simpler compared with that which has been disclosed in said patent application.
  • the tube casing of the invention is characterized in that at the procedure step of wrapping the foil into cylindrical or conical shape in a manner known in itself in the art, the margin which comes to lie on the inner surface has been folded so that it remains interposed between the foil layers.
  • the invention is described in the following with the aid of an example with reference made to the attached drawing depicting a foil tube manufactured by the procedure of the invention.
  • the foil 1 is coated with a plastic film 2 over the entire width of the foil while this is still in the form of a continuous strip e.g. on an extruder as known in the art.
  • the foil strip is then cut to suitable lengths and wrapped to become a tube casing 4. Prior to . this, the foil margin.3 coming to lie on the inner surface of the casing is folded inward so that, as revealed by the figure, it will not come into contact with the product kept in the tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Making Paper Articles (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Tubes (AREA)

Abstract

A procedure for manufacturing foil for a container e.g. a tube, wherein one side of the foil (1) is at least partly coated with plastic film (2). The metallic margin of the foil is prevented from coming into contact with the product in that at the wrapping of the foil (1) to from a cylindrical or conical object (4) in a manner known in itself in the art, the margin (3) coming to lie on the inner surface has been folded so that it is interposed between the foil courses.

Description

Procedure for manufacturing a tube casing
The present invention concerns a procedure for manufacturing a foil for a container, e.g. a tube, wherein one side of the foil is coated partly at least with a plastic film. The foil usually consists of aluminium of which the surface is protection-varnished with a hot seam protective varnish. The foil is cut off to constitute a piece of suitable length and is wrapped around a mandrel, whereupon it is heated to a temperature high enough to cause the hot seam protective varnish to glue the courses fast to each other. The drawback is that the inner surface facing against the mandrel also is heated and the foil adheres to the mandrel. Therefore the protective varnish film is quite likely to suffer rupture, and the material kept in the tube will come into contact with the metal. It is also a drawback that the margins of the foil tend to remain bare. Since always one of the two margins is positioned inside the tube, the risk is present that the product with which the tube is filled comes into contact with the foil metal.
Such foil coating procedures are also known in the art in which the surface which will be the inner surface of the tube is coated with melted plastic, which also covers the margin areas by flowing and by filling all cavities. Such a procedure is disclosed in the Finnish patent application No. 820915.
The object of the invention is to eliminate the drawbacks mentioned and to afford, alternatively, a solution that is simpler compared with that which has been disclosed in said patent application.
The tube casing of the invention is characterized in that at the procedure step of wrapping the foil into cylindrical or conical shape in a manner known in itself in the art, the margin which comes to lie on the inner surface has been folded so that it remains interposed between the foil layers. The invention is described in the following with the aid of an example with reference made to the attached drawing depicting a foil tube manufactured by the procedure of the invention.
The foil 1 is coated with a plastic film 2 over the entire width of the foil while this is still in the form of a continuous strip e.g. on an extruder as known in the art. The foil strip is then cut to suitable lengths and wrapped to become a tube casing 4. Prior to . this, the foil margin.3 coming to lie on the inner surface of the casing is folded inward so that, as revealed by the figure, it will not come into contact with the product kept in the tube.
It is obvious to a person skilled in the art that different embodiments of the invention are not confined exclusively to the example presented and may vary within the scope of the claim stated below.

Claims

Claim
Procedure for manufacturing foil for a container such as a tube, where one side of the foil (1) is at least partly coated with a plastic film (2), characterized in that when the foil (1) is being wrapped to form a cylindrical or conical object (4) in a manner known in itself, the margin (3) coming to lie on the inner surface has been so folded as to be interposed between the foil courses.
PCT/FI1983/000032 1982-05-13 1983-04-22 Procedure for manufacturing a tube casing WO1983004001A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB848400718A GB8400718D0 (en) 1982-05-13 1984-01-12 Tube casing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI821686 1982-05-13
FI821686A FI821686A (en) 1982-05-13 1982-05-13 FRAMSTAELLNINGSMETOD FOER TUBMANTEL

Publications (1)

Publication Number Publication Date
WO1983004001A1 true WO1983004001A1 (en) 1983-11-24

Family

ID=8515516

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1983/000032 WO1983004001A1 (en) 1982-05-13 1983-04-22 Procedure for manufacturing a tube casing

Country Status (11)

Country Link
KR (1) KR840004901A (en)
AU (1) AU1512683A (en)
BE (1) BE896649A (en)
DE (1) DE3344170T1 (en)
FI (1) FI821686A (en)
FR (1) FR2526709A1 (en)
GB (1) GB8400718D0 (en)
GR (1) GR78146B (en)
IT (1) IT8348259A0 (en)
PT (1) PT76640B (en)
WO (1) WO1983004001A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4622030A (en) * 1984-04-23 1986-11-11 Kimberly-Clark Corporation Reverse folded convolutely wound tampon tube

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935048A (en) * 1973-01-29 1976-01-27 Crown Zellerbach Corporation Method for forming containers with fin-type seams
US4210477A (en) * 1978-06-30 1980-07-01 American Can Company Tube forming method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935048A (en) * 1973-01-29 1976-01-27 Crown Zellerbach Corporation Method for forming containers with fin-type seams
US4210477A (en) * 1978-06-30 1980-07-01 American Can Company Tube forming method

Also Published As

Publication number Publication date
FI821686A (en) 1983-11-14
PT76640B (en) 1986-03-12
BE896649A (en) 1983-09-01
GB8400718D0 (en) 1984-02-15
FI821686A0 (en) 1982-05-13
KR840004901A (en) 1984-10-31
GR78146B (en) 1984-09-26
DE3344170T1 (en) 1984-07-12
FR2526709A1 (en) 1983-11-18
AU1512683A (en) 1983-12-02
IT8348259A0 (en) 1983-05-10
PT76640A (en) 1983-06-01

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