GB1111753A - A method and a device for cutting and hf-welding of thermoplastic sheets - Google Patents

A method and a device for cutting and hf-welding of thermoplastic sheets

Info

Publication number
GB1111753A
GB1111753A GB1119/66A GB111966A GB1111753A GB 1111753 A GB1111753 A GB 1111753A GB 1119/66 A GB1119/66 A GB 1119/66A GB 111966 A GB111966 A GB 111966A GB 1111753 A GB1111753 A GB 1111753A
Authority
GB
United Kingdom
Prior art keywords
sheets
parts
cutting
cutting edge
portions
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
Application number
GB1119/66A
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
Publication of GB1111753A publication Critical patent/GB1111753A/en
Expired legal-status Critical Current

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
    • 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
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding
    • B31B50/66—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding by high-frequency electric heating
    • 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
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding

Landscapes

  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

1,111,753. Seaming non-metallic sheet material; cutting sheet material. O. FRIDLUND. 10 Jan., 1966 [8 Jan., 1965], No. 1119/66. Headings B5A and B5K. Thermoplastic sheets 6, 7 are cut and welded by disposing the sheets 6, 7 between parts 1, 2 of a cutting and welding device, moving the part 2 towards the part 1 to cause a cutting edge 9 on the part 2 to act on the sheets 6, 7, and passing a high-frequency current through electrical conductors of the parts 1, 2, the part 1 comprising a conductor 4 and electrical insulation 3, 5 both so arranged that the action of the high-frequency current occurs over certain portions of the working area of the parts 1, 2 but does not occur over other portions of the working area. The insulating layers 3, 5 of the part 1 comprise thin sheets of a phenolformaldehyde plastic and the conducting layer 4 may be a thin metal sheet or may be formed by a printed-circuit technique. The layer 4 is suitably shaped to the desired weld area and may reach the correct potential either in a capacitive way or by being directly connected to the work-table 1. The tool 2 may be made of copper and comprises welding portions situated just inwardly of the cutting edge 9. In use, the sheets 6, 7 are intermittently advanced and the tool 2 is lowered so that a bag 10, Fig. 2 (not shown), is cut out at 10b and simultaneously welded at 10a. A second cutting edge (not shown) may be provided so as to penetrate only the upper sheet 6 to form a bag having one wall longer than the other. In modifications, the part 2 is fixed and the part 1 is movable or both parts 1, 2 are movable.
GB1119/66A 1965-01-08 1966-01-10 A method and a device for cutting and hf-welding of thermoplastic sheets Expired GB1111753A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42429865A 1965-01-08 1965-01-08

Publications (1)

Publication Number Publication Date
GB1111753A true GB1111753A (en) 1968-05-01

Family

ID=23682156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1119/66A Expired GB1111753A (en) 1965-01-08 1966-01-10 A method and a device for cutting and hf-welding of thermoplastic sheets

Country Status (1)

Country Link
GB (1) GB1111753A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2288360A (en) * 1993-04-12 1995-10-18 Takata Corp Melt-cutting uncoated air bag ground fabric

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2288360A (en) * 1993-04-12 1995-10-18 Takata Corp Melt-cutting uncoated air bag ground fabric

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