GB1084550A - Perforated thermoplastic packing material - Google Patents

Perforated thermoplastic packing material

Info

Publication number
GB1084550A
GB1084550A GB4509863A GB4509863A GB1084550A GB 1084550 A GB1084550 A GB 1084550A GB 4509863 A GB4509863 A GB 4509863A GB 4509863 A GB4509863 A GB 4509863A GB 1084550 A GB1084550 A GB 1084550A
Authority
GB
United Kingdom
Prior art keywords
holes
valves
layers
air
flaps
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
GB4509863A
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
Priority to GB4509863A priority Critical patent/GB1084550A/en
Priority to DK557264A priority patent/DK107280C/en
Publication of GB1084550A publication Critical patent/GB1084550A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B65D29/00—Sacks or like containers made of fabrics; Flexible containers of open-work, e.g. net-like construction
    • B65D29/04—Net-like containers made of plastics material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Bag Frames (AREA)

Abstract

1,084,550. Bags with valves permitting escape of air. O. B. RASMUSSEN. Nov. 16, 1964 [Jan. 28, 1964], Nos. 45098/63 and 3630/64. Heading B8K. [Also in Division B5] Laminates of polythene or polypropylene used for making ventilated heavy duty bags comprise layers 10 of uniaxially stretched material united with their axes of stretching at right angles, the layers being perforated with holes 11, e.g. of 4-5 mm. diameter, covered as by flaps 14 welded or adhered along one edge and between the holes to form " valves " permitting the escape of air and vapours but obstructing the entry of water. The layers may be adhesively secured together, e.g. by polyisobutylene. Alternatively, the " valves " may comprise individual flaps for the holes, or individual pieces, or extruder strips, e.g. of P.V.C., placed on each side of the holes and pressed together through them. Welding may be by heat or ultrasonics.
GB4509863A 1963-11-14 1963-11-14 Perforated thermoplastic packing material Expired GB1084550A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4509863A GB1084550A (en) 1963-11-14 1963-11-14 Perforated thermoplastic packing material
DK557264A DK107280C (en) 1963-11-14 1964-11-12 Perforated, thermoplastic packaging material.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4509863A GB1084550A (en) 1963-11-14 1963-11-14 Perforated thermoplastic packing material

Publications (1)

Publication Number Publication Date
GB1084550A true GB1084550A (en) 1967-09-27

Family

ID=10435878

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4509863A Expired GB1084550A (en) 1963-11-14 1963-11-14 Perforated thermoplastic packing material

Country Status (1)

Country Link
GB (1) GB1084550A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2221691A (en) * 1988-07-15 1990-02-14 Courtaulds Films & Packaging Polymeric films
GB2221692A (en) * 1988-07-15 1990-02-14 Courtaulds Films & Packaging Packaging method
US5672406A (en) * 1991-03-25 1997-09-30 British Technology Group Limited Material having a thermally expandable passage
WO1999064509A1 (en) * 1998-06-05 1999-12-16 Borealis Technology Oy Polymer compositions

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2221691A (en) * 1988-07-15 1990-02-14 Courtaulds Films & Packaging Polymeric films
GB2221692A (en) * 1988-07-15 1990-02-14 Courtaulds Films & Packaging Packaging method
GB2221692B (en) * 1988-07-15 1992-04-15 Courtaulds Films & Packaging Storage and packaging of plant material
GB2221691B (en) * 1988-07-15 1992-04-15 Courtaulds Films & Packaging Polymeric films for the storage or packing of plant material
AU633008B2 (en) * 1988-07-15 1993-01-21 Sidlaw Flexible Packaging Limited Polymeric films
US5672406A (en) * 1991-03-25 1997-09-30 British Technology Group Limited Material having a thermally expandable passage
WO1999064509A1 (en) * 1998-06-05 1999-12-16 Borealis Technology Oy Polymer compositions
US6582795B1 (en) 1998-06-05 2003-06-24 Borealis Technology Oy Polymer compositions

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