GB643704A - Method of, and machine for making block bottom bags - Google Patents

Method of, and machine for making block bottom bags

Info

Publication number
GB643704A
GB643704A GB23272/48A GB2327248A GB643704A GB 643704 A GB643704 A GB 643704A GB 23272/48 A GB23272/48 A GB 23272/48A GB 2327248 A GB2327248 A GB 2327248A GB 643704 A GB643704 A GB 643704A
Authority
GB
United Kingdom
Prior art keywords
tube
block bottom
making block
engage
roll
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
GB23272/48A
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.)
2019 S&H Ltd
Original Assignee
Strachan and Henshaw 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 Strachan and Henshaw Ltd filed Critical Strachan and Henshaw Ltd
Priority to GB23272/48A priority Critical patent/GB643704A/en
Publication of GB643704A publication Critical patent/GB643704A/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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/003—Opening or distending bags
    • 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
    • B31B50/76—Opening and distending flattened articles
    • B31B50/78—Mechanically

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

643,704. Making paper bags. STRACHAN & HENSHAW, Ltd., and NICHOLSON, D. G. J. Sept. 3, 1948, No. 23272. [Class 94(ii)] In making block bottom bags a bag tube 31 is produced free from edge creases, and thereafter pressure is applied transversely to the tube to cause its upper wall to lift and thereby open the leading end of the tube sufficiently for it to engage a folding nose 22. The formation of edge creases is prevented by rounding the edges of the tube former-plate. The transverse pressure is applied by a member 28 resiliently mounted in one of a pair of forwarding rolls, said roll having an arcuate periphery adapted to engage the other roll 21 behind the member 28.
GB23272/48A 1948-09-03 1948-09-03 Method of, and machine for making block bottom bags Expired GB643704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB23272/48A GB643704A (en) 1948-09-03 1948-09-03 Method of, and machine for making block bottom bags

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23272/48A GB643704A (en) 1948-09-03 1948-09-03 Method of, and machine for making block bottom bags

Publications (1)

Publication Number Publication Date
GB643704A true GB643704A (en) 1950-09-27

Family

ID=10192987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23272/48A Expired GB643704A (en) 1948-09-03 1948-09-03 Method of, and machine for making block bottom bags

Country Status (1)

Country Link
GB (1) GB643704A (en)

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