NL6814532A - Block-shaped plastic bags prodn. - Google Patents

Block-shaped plastic bags prodn.

Info

Publication number
NL6814532A
NL6814532A NL6814532A NL6814532A NL6814532A NL 6814532 A NL6814532 A NL 6814532A NL 6814532 A NL6814532 A NL 6814532A NL 6814532 A NL6814532 A NL 6814532A NL 6814532 A NL6814532 A NL 6814532A
Authority
NL
Netherlands
Prior art keywords
lengthwise
incision
fold line
tubular film
film
Prior art date
Application number
NL6814532A
Inventor
Vries J R J H De
Original Assignee
Wavin Bv
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 Wavin Bv filed Critical Wavin Bv
Priority to NL6814532A priority Critical patent/NL6814532A/en
Priority to GB48473/69A priority patent/GB1292038A/en
Priority to IE1371/69A priority patent/IE33932B1/en
Priority to US866427A priority patent/US3590698A/en
Priority to BE740034D priority patent/BE740034A/xx
Priority to DE1950889A priority patent/DE1950889B2/en
Priority to SE6913867A priority patent/SE373330B/en
Priority to FR6934741A priority patent/FR2020342A1/fr
Publication of NL6814532A publication Critical patent/NL6814532A/en

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
    • B65D31/142—Valve bags, i.e. with valves for filling the filling port being formed by folding a flap connected to a side, e.g. block bottoms
    • 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

Landscapes

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

Abstract

Plastic bags, optionally provided with a filling valve, are produced by (a) forming at least one lengthwise incision in a tubular film from end and of the film to form a first corner flap between the lengthwise incision and the adjoining lengthwise edge of the film, (b) outwardly folding the bottom flap parts lying next to the lengthwise incision on the other side, around the fold line in the tubular film part from the incision point, (c) inwardly folding the bottom flaps around a transverse fold line situated between the fold line (b) and the line passing perpendicular to the tubular film lengthwise edges through the lengthwise incision and point, and (d) welding together the bottom flap parts. The tubular film has bottom flap parts placed next to the incision with end edges sloping relative to the lengthwise edges of the tubular film, and the bottom flap parts are folded inwardly around a transverse fold line situated between the fold line of (b) and the line moving perpendicular to the lengthwise edges of the tubular film through the lengthwise incision end point, while the triangular parts of the second corner flap situated next to the transverse fold line are folded back under the remaining part of the corner flap.
NL6814532A 1968-10-10 1968-10-10 Block-shaped plastic bags prodn. NL6814532A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL6814532A NL6814532A (en) 1968-10-10 1968-10-10 Block-shaped plastic bags prodn.
GB48473/69A GB1292038A (en) 1968-10-10 1969-10-02 A method for manufacturing a plastics block bag
IE1371/69A IE33932B1 (en) 1968-10-10 1969-10-02 A method for manufacturing a plastics block bag
US866427A US3590698A (en) 1968-10-10 1969-10-07 Method for manufacturing a plastic block bag
BE740034D BE740034A (en) 1968-10-10 1969-10-09
DE1950889A DE1950889B2 (en) 1968-10-10 1969-10-09 Cross-bottom plastic bag with filling valve
SE6913867A SE373330B (en) 1968-10-10 1969-10-09 CROSS BOTTOM PLASTIC WITH FILLING VALVE
FR6934741A FR2020342A1 (en) 1968-10-10 1969-10-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6814532A NL6814532A (en) 1968-10-10 1968-10-10 Block-shaped plastic bags prodn.

Publications (1)

Publication Number Publication Date
NL6814532A true NL6814532A (en) 1970-04-14

Family

ID=19804900

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6814532A NL6814532A (en) 1968-10-10 1968-10-10 Block-shaped plastic bags prodn.

Country Status (1)

Country Link
NL (1) NL6814532A (en)

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