Title:
【発明の名称】台紙入りクリアーポケットの製造方法
Document Type and Number:
Japanese Patent JP3080755
Kind Code:
B2
Abstract:
A method of making a support sheet-containing plastic film pocket for use in files. A continuous thin-film tubular material formed continuously by synthetic resin inflation molding is folded at opposite sides thereof into a flat tubular sheet consisting of an upper thin-film sheet and a lower thin-film sheet. The upper thin-film sheet is cut centrally along the length thereof. Two halves of the cut upper thin-film sheet are opened, and support sheets are inserted between respective opened halves of the upper thin-film sheet and corresponding portions of the lower thin-film sheet. Cut edge portions of the upper thin-film sheet are tacked to the lower thin-film sheet. Then, the thin-film tubular material, with support sheets inserted therein, is cut to a predetermined size of a target plastic film pocket. One end resulting from this cutting is welded. Again, the cut edge portions of the upper thin-film sheet or portions adjacent thereto are welded to at least the lower thin-film sheet.
Inventors:
Yoshiharu Kohno
Application Number:
JP2452292A
Publication Date:
August 28, 2000
Filing Date:
January 14, 1992
Export Citation:
Assignee:
Kono Platec Co., Ltd.
Tabuchi Trading Co., Ltd.
Tabuchi Trading Co., Ltd.
International Classes:
B31D1/00; B42C7/00; B42F7/00; B42F5/04; (IPC1-7): B42F5/04; B42F7/00
Domestic Patent References:
| JP6232095A | ||||
| JP6266999A | ||||
| JP324996A | ||||
| JP4338600A |
Attorney, Agent or Firm:
Tetsuo Miwa