EP0072086A3 - Method of manufacture of bags from synthetic plastics material and apparatus therefor - Google Patents

Method of manufacture of bags from synthetic plastics material and apparatus therefor Download PDF

Info

Publication number
EP0072086A3
EP0072086A3 EP82301978A EP82301978A EP0072086A3 EP 0072086 A3 EP0072086 A3 EP 0072086A3 EP 82301978 A EP82301978 A EP 82301978A EP 82301978 A EP82301978 A EP 82301978A EP 0072086 A3 EP0072086 A3 EP 0072086A3
Authority
EP
European Patent Office
Prior art keywords
web
drum
slots
spaced
sealing
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.)
Withdrawn
Application number
EP82301978A
Other languages
German (de)
French (fr)
Other versions
EP0072086A2 (en
Inventor
Thomas Gough Hutt
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
Publication of EP0072086A2 publication Critical patent/EP0072086A2/en
Publication of EP0072086A3 publication Critical patent/EP0072086A3/en
Withdrawn legal-status Critical Current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
    • B31B70/00—Making flexible containers, e.g. envelopes or 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B31B70/649—Uniting opposed surfaces or edges; Taping by applying heat or pressure using tools mounted on a drum
    • 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
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
    • 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
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
    • B31B2155/0014—Flexible containers made from webs by folding webs longitudinally having their openings facing transversally to the direction of movement
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • 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
    • B31B70/74—Auxiliary operations
    • B31B70/92—Delivering
    • B31B70/94—Delivering singly or in succession
    • B31B70/946—Delivering singly or in succession the bags being interconnected

Landscapes

  • Making Paper Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Apparatus for making side-sealed bags (22.1, 22.2, 22.3) from a double-layer web (22) of thin synthetic plastics film. The apparatus includes a rotatably moun­ ted sealing drum (14) having a plurality of circumfer­ entially spaced axially extending slots (16) in its peri­ phery. In use, the web (22) moves belt-fashion over the slots (16) in contact with the drum (14). A sealing rotor (18) running in synchronism with the drum (14) has a heat cutter member (20, 21) which intersects the web (22) at circumferentially spaced intervals by passing cyclically into the slots (16) of the drum (14). The heat cutter member (20, 21) has spaced interruptions (21.2) along its length which result in spaced perforations (160.1) being made across the width of the web (22). The two layers (22.11, 22.12) of film are welded together at such perforations (160.1), thus forming side-sealed bags separated by zones of weakness (160). The web (22) is rolled up into a roll (26) of such side-sealed bags (22.1, 22.2, 22.3). The sealing rate and web speed can be adjusted to match the rate of extrusion of an ex­ truder (242).
EP82301978A 1981-08-05 1982-04-16 Method of manufacture of bags from synthetic plastics material and apparatus therefor Withdrawn EP0072086A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA815383 1981-08-05
ZA815383 1981-08-05

Publications (2)

Publication Number Publication Date
EP0072086A2 EP0072086A2 (en) 1983-02-16
EP0072086A3 true EP0072086A3 (en) 1983-07-20

Family

ID=25575565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82301978A Withdrawn EP0072086A3 (en) 1981-08-05 1982-04-16 Method of manufacture of bags from synthetic plastics material and apparatus therefor

Country Status (3)

Country Link
EP (1) EP0072086A3 (en)
JP (1) JPS5865646A (en)
AU (1) AU549571B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8904740B2 (en) 2012-08-21 2014-12-09 Intertape Polymer Corp. Method and apparatus for changing a strip of sealed bag precursors in to open bags
US9139317B2 (en) 2012-08-21 2015-09-22 Intertape Polymer Corp. Method and apparatus for opening bags while maintaining a continuous strip of bag precursors

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2000551A1 (en) * 1970-01-07 1971-07-15 Hercules Membrino Thermoplastic sacks or bags prodn
GB1257937A (en) * 1969-07-07 1971-12-22
US3725180A (en) * 1969-11-06 1973-04-03 H Membrino Bag-making machine for thermoplastic bags
AT333496B (en) * 1971-07-23 1976-11-25 Showa Denko Kk DEVICE FOR BIAXIAL STRETCHING OF TUBE FILMS MADE OF PLASTIC
AT334076B (en) * 1973-06-05 1976-12-27 Pannenbecker H PROCESS FOR PRODUCING PLASTIC FILMS
GB1473129A (en) * 1973-08-23 1977-05-11

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1257937A (en) * 1969-07-07 1971-12-22
US3725180A (en) * 1969-11-06 1973-04-03 H Membrino Bag-making machine for thermoplastic bags
DE2000551A1 (en) * 1970-01-07 1971-07-15 Hercules Membrino Thermoplastic sacks or bags prodn
AT333496B (en) * 1971-07-23 1976-11-25 Showa Denko Kk DEVICE FOR BIAXIAL STRETCHING OF TUBE FILMS MADE OF PLASTIC
AT334076B (en) * 1973-06-05 1976-12-27 Pannenbecker H PROCESS FOR PRODUCING PLASTIC FILMS
GB1473129A (en) * 1973-08-23 1977-05-11

Also Published As

Publication number Publication date
AU549571B2 (en) 1986-01-30
AU8305082A (en) 1983-02-10
JPS5865646A (en) 1983-04-19
EP0072086A2 (en) 1983-02-16

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PUAL Search report despatched

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18D Application deemed to be withdrawn

Effective date: 19840321