GB724918A - Improvements in or relating to methods for the manufacture of bags and sachets - Google Patents

Improvements in or relating to methods for the manufacture of bags and sachets

Info

Publication number
GB724918A
GB724918A GB2026/53A GB202653A GB724918A GB 724918 A GB724918 A GB 724918A GB 2026/53 A GB2026/53 A GB 2026/53A GB 202653 A GB202653 A GB 202653A GB 724918 A GB724918 A GB 724918A
Authority
GB
United Kingdom
Prior art keywords
rip
cord
strip
seams
holes
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
GB2026/53A
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.)
Cellophane Investment Co Ltd
Original Assignee
Cellophane Investment Co Ltd
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 Cellophane Investment Co Ltd filed Critical Cellophane Investment Co Ltd
Publication of GB724918A publication Critical patent/GB724918A/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
    • 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
    • B31B50/8125—Applying strips or strings, e.g. tear strips or strings

Landscapes

  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

724,918. Packaging; making bags. CELLOPHANE INVESTMENT CO., Ltd. Jan. 23, 1953 [Feb. 15, 1952], No. 2026/53. Classes 94 (1) and 94 (2). Flat bags with rip-cords are made by feeding continuously a strip of bag material, securing a continuous length of rip-cord material to the strip at a position spaced from its longitudinal centre line, folding the strip about its longitudinal centre line to enclose the length of rip-cord, heat-sealing the folded strip to form transverse seams at intervals, cutting through the centre lines of the seams to form bags each having marginal seams and a ripcord extending therethrough, and providing cuts in the material of each bag extending partly through one or each seam on each side of one or each end of the rip-cord so that'the latter may be bent up and grasped. The cuts may be formed prior to, simultaneously with, or after the separation of the bags from the strip. In a modification, the folded strip is replaced by two superimposed strips heatsealed together along one longitudinal margin. As shown in Fig. 2, incisions 5, 5<SP>1</SP> are made in each transverse seam 4 on either side of the length of rip-cord 2 so that either end 7 or 7<SP>1</SP> of the rip-cord in a completed bag 6 may be bent up and grasped. Alternatively, the incisions may be made in alternate seams or non-centrally in each seam so that only one end of the rip-cord may be bent up. In a modification, Figs. 3, 4 and 5, the strip of bag material is formed with pairs of holes 8 at equal distances from the fold line so that when the strip is folded and heat-sealed the holes are superimposed and are positioned centrally of the seams, the ends of the rip-cord in a completed bag being thus left exposed. Alternate pairs of holes may be omitted-so that only one end of the rip-cord is left exposed, or the holes may be formed on one side only of the fold line and the heat-sealing tool so designed that it does not apply pressure over the areas of the holes, whereby the ends of the rip-cord in a completed bag will be left free but only one side thereof will be exposed. Specification 703,756 is referred to.
GB2026/53A 1952-02-15 1953-01-23 Improvements in or relating to methods for the manufacture of bags and sachets Expired GB724918A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR724918X 1952-02-15

Publications (1)

Publication Number Publication Date
GB724918A true GB724918A (en) 1955-02-23

Family

ID=9109785

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2026/53A Expired GB724918A (en) 1952-02-15 1953-01-23 Improvements in or relating to methods for the manufacture of bags and sachets

Country Status (1)

Country Link
GB (1) GB724918A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984958A (en) * 1959-06-15 1961-05-23 Bartelt Engineering Co Machine for forming packages with tear string
US3345918A (en) * 1965-03-26 1967-10-10 Warner Lambert Pharmaceutical Tear-strip wrapper processing apparatus
FR2286707A1 (en) * 1974-10-03 1976-04-30 Wolff Walsrode Ag Method and device for producing plastic bags with a tear-off tape
GB2135651A (en) * 1983-02-18 1984-09-05 Kanari Tani Easy-to-open synthetic resin bag and apparatus for the manufacture thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984958A (en) * 1959-06-15 1961-05-23 Bartelt Engineering Co Machine for forming packages with tear string
US3345918A (en) * 1965-03-26 1967-10-10 Warner Lambert Pharmaceutical Tear-strip wrapper processing apparatus
FR2286707A1 (en) * 1974-10-03 1976-04-30 Wolff Walsrode Ag Method and device for producing plastic bags with a tear-off tape
GB2135651A (en) * 1983-02-18 1984-09-05 Kanari Tani Easy-to-open synthetic resin bag and apparatus for the manufacture thereof

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