GB1128995A - Improvement relating to bags - Google Patents

Improvement relating to bags

Info

Publication number
GB1128995A
GB1128995A GB2714066A GB2714066A GB1128995A GB 1128995 A GB1128995 A GB 1128995A GB 2714066 A GB2714066 A GB 2714066A GB 2714066 A GB2714066 A GB 2714066A GB 1128995 A GB1128995 A GB 1128995A
Authority
GB
United Kingdom
Prior art keywords
beads
sheet
bag
die
forced
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
GB2714066A
Inventor
Steven Ausnit
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.)
FLEXIGRIP Ltd
Original Assignee
FLEXIGRIP 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 FLEXIGRIP Ltd filed Critical FLEXIGRIP Ltd
Priority to GB2714066A priority Critical patent/GB1128995A/en
Publication of GB1128995A publication Critical patent/GB1128995A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D5/00—Producing elements of slide fasteners; Combined making and attaching of elements of slide fasteners
    • B29D5/10—Producing elements of slide fasteners; Combined making and attaching of elements of slide fasteners the interlocking members being formed by continuous profiled strip
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/24—End- or aperture-closing arrangements or devices using self-locking integral or attached closure elements, e.g. flaps

Abstract

1,128,995. Bags with securing devices. FLEXIGRIP Ltd. 17 June, 1966, No. 27140/66. Heading B8K. [Also in Divisions B5 and E2] A thermoplastics bag has opposite sides 17, 18 each formed by extrusion of a flexible thermoplastics sheet simultaneously with a flexible thermoplastics bead 33a, 33b integral with the sheet, the pair of beads extending along the respective sides adjacent the bag opening so as to be parallel to one another and having permanently magnetizable material embedded along their lengths and at least one being permanently magnetized so that the beads attract one another and thus constitute a fastener for the bag. The opposite sides of the bag can be formed from separate sheets which are subsequently joined together, alternatively the opposite sides are integral with one another in which case they are formed by the extrusion of a single flexible thermoplastic sheet simultaneously with the pair of flexible thermoplastic beads integral with the sheet, the sheet then being joined along its edges so as to form the bag. The permanently magnetizable material can be a wire or it can be in the form of discrete particles. When a single sheet is used it can be extruded so as to be tubular in cross-section, the beads being extruded at the same time, after which the sheet is slit longitudinally between the beads. A die is shown in Fig. 2, having a cylindrical bore 51 through which molten thermoplastic material 54 is forced, a mandrel 56 being situated concentrically within the bore 51 and the die having a passage 61 in its wall through which molten thermoplastic material containing magnetizable particles is forced into the die. A modification is described in which wire is forced into the die instead of the material containing the particles. When both beads are magnetized they are magnetized so that the facing parts of the beads have opposite magnetic polarities.
GB2714066A 1966-06-17 1966-06-17 Improvement relating to bags Expired GB1128995A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2714066A GB1128995A (en) 1966-06-17 1966-06-17 Improvement relating to bags

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2714066A GB1128995A (en) 1966-06-17 1966-06-17 Improvement relating to bags

Publications (1)

Publication Number Publication Date
GB1128995A true GB1128995A (en) 1968-10-02

Family

ID=10254867

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2714066A Expired GB1128995A (en) 1966-06-17 1966-06-17 Improvement relating to bags

Country Status (1)

Country Link
GB (1) GB1128995A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133737A (en) * 1983-01-15 1984-08-01 Plessey Co Plc Improvements relating to the manufacture of magnetic sensing optical devices
EP2739541A2 (en) * 2011-08-03 2014-06-11 Contec, Inc. Wiper packaging incorporating magnetic seal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133737A (en) * 1983-01-15 1984-08-01 Plessey Co Plc Improvements relating to the manufacture of magnetic sensing optical devices
EP2739541A2 (en) * 2011-08-03 2014-06-11 Contec, Inc. Wiper packaging incorporating magnetic seal
EP2739541A4 (en) * 2011-08-03 2015-03-25 Contec Inc Wiper packaging incorporating magnetic seal

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