GB1241722A - Valved sacks - Google Patents

Valved sacks

Info

Publication number
GB1241722A
GB1241722A GB332769A GB332769A GB1241722A GB 1241722 A GB1241722 A GB 1241722A GB 332769 A GB332769 A GB 332769A GB 332769 A GB332769 A GB 332769A GB 1241722 A GB1241722 A GB 1241722A
Authority
GB
United Kingdom
Prior art keywords
web
sack
front wall
slit
layers
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
GB332769A
Inventor
Robert Walker Dickson
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.)
British Visqueen Ltd
Original Assignee
British Visqueen 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 British Visqueen Ltd filed Critical British Visqueen Ltd
Priority to GB332769A priority Critical patent/GB1241722A/en
Priority to DE19702002550 priority patent/DE2002550A1/en
Publication of GB1241722A publication Critical patent/GB1241722A/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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/14—Valve bags, i.e. with valves for filling
    • B65D31/147—Valve bags, i.e. with valves for filling the filling port being provided in a side wall

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Abstract

1,241,722. Making valved sacks. BRITISH VISQUEEN Ltd. 6 Jan., 1970 [21 Jan., 1969], No. 3327/69. Heading B5D. [Also in Division B8] A sack having a filling valve is formed from a rectangular length of a flattened tubular web of woven polypropylene, polythene or jute by providing a slit 14 in the front wall of the web, folding over an extension portion 12 about a line 17 to cover the slit 14, and forming stitched seams between both layers of the extension 12 and both walls of the web at 19, between both layers of the extension 12 and the front wall of the web at 20 and 21, and along the bottom of the sack at 23. In another embodiment (Figs. 1 and 2, not shown) the extension portion (6) extends across the whole width of an open end (4) of the sack. The open end (4) is closed and secured to the front wall of the web by a stitched seam (8) and the inner or both layers of the extension portion (6) stitched to front wall of the web adjacent the slit (2) to form a seam (7). As an alternative to stitching the seams may be formed using adhesive or heat sealing methods. The valve sack may also include gusseted side walls and a gusset bottom.
GB332769A 1969-01-21 1969-01-21 Valved sacks Expired GB1241722A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB332769A GB1241722A (en) 1969-01-21 1969-01-21 Valved sacks
DE19702002550 DE2002550A1 (en) 1969-01-21 1970-01-21 Valve bags

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB332769A GB1241722A (en) 1969-01-21 1969-01-21 Valved sacks

Publications (1)

Publication Number Publication Date
GB1241722A true GB1241722A (en) 1971-08-04

Family

ID=9756226

Family Applications (1)

Application Number Title Priority Date Filing Date
GB332769A Expired GB1241722A (en) 1969-01-21 1969-01-21 Valved sacks

Country Status (2)

Country Link
DE (1) DE2002550A1 (en)
GB (1) GB1241722A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4007128A1 (en) * 1989-10-03 1991-04-11 Miele & Cie Inflatable foil bag for packaging - has two foils each with integral valve sections avoiding leaking seals

Also Published As

Publication number Publication date
DE2002550A1 (en) 1970-07-30

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