US3260171A - Bag making device - Google Patents

Bag making device Download PDF

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Publication number
US3260171A
US3260171A US300892A US30089263A US3260171A US 3260171 A US3260171 A US 3260171A US 300892 A US300892 A US 300892A US 30089263 A US30089263 A US 30089263A US 3260171 A US3260171 A US 3260171A
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US
United States
Prior art keywords
webs
collecting roller
web
weakening
devices
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 - Lifetime
Application number
US300892A
Other languages
English (en)
Inventor
Brockmuller Friedrich Franz
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Application granted granted Critical
Publication of US3260171A publication Critical patent/US3260171A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/10—Feeding or positioning webs
    • 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
    • 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
    • B31B2170/00—Construction of flexible containers
    • B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined

Definitions

  • the present invention relates generally to the paper bag making art, and, more particularly, to machines for forming paper tubes by feeding a plurality of webs, gluing them together, and providing them with weakening lines; the invention concerns a further development for use between the device for providing the weakening lines and the collecting roller for super-posing the webs in order to form a multiply web, the webs having previously been provided with weakening lines and transverse stripes of adhesive.
  • tube drawing machines In the manufacturing of paper bags, tube drawing machines are known wherein ya plurality of paper webs or the like are synchronously supplied and are provided with weakening lines, such as score lines or perforated lines. These weakening lines extend transversely to the direction of movement of the web, and the majority of weakening lines have portions which are longitudinally offset from each other. Thus, the portions of the weakening lines which are formed in the plurality of webs are spaced a variable distance longitudinally from imaginary center lines disposed transversely to the webs ⁇ and through the general area of weakening.
  • -stripes of adhesive are applied to the webs transversely to the direction of movement, and the webs then pass to the collecting roller on which the webs are placed one onto the other in exact and proper alignment with the imaginary center lines disposed exactly one above the other.
  • the variable spacing of the weakening lines in the individual webs results in a staggering of the web ends and the stripes of adhesive which are disposed beside the weakening lines yare eifective to join the webs together.
  • all of the adhesive applying devices and all of the weakening devices together with respect to the weakening center lines cooperate in synchronism in such a manner that all of the adhesive applying devices and all of the weakening line forming devices can be -adjusted together if the machine were changed to another length of the web sections. This shortens t-he am-ount of time necessary for changing the machine.
  • controlling rollers are provided between the adhesive applying devices or the weakening devices, respectively, .and the collecting roller.
  • Those controlling rollers provide for a fine adjustment of the individual lengths of the web in such a manner that the adhesive applying devices and the weakening devices are capable of operating in synchronism.
  • the lengths of the webs are substantially the same.
  • Another obje-ct of the invention is to provide a device of the character described which will accomplish the functions and purposes for which it is intended in an exceedingly simple manner.
  • the arrangement of the adhesive applying devices and of the weakening devices in accordance with the present invention is maintained one above the other.
  • the lengths of the individual webs between the adhesive applying devices and the collecting roller are also maintained to be substantially equal so that the adhesive applying devices operate synchronously.
  • the lengths of the individual webs between the collecting roller and the perforating devices are different so that the weakening devices do not operate synchronously. While the lengths are to be different, the difference in length should not be too large, for otherwise there Will be the detrimental effect of unequal lengths of webs pointed out above.
  • the ditference in length must be designed so that it is sufficiently large to provide an adequate interval of time between the cutting operations in the individual perforating mechanisms.
  • a feature of the present invention is that the difference in length between the longest and the shortest length of web between the weakening device and the collecting roller is maintained in the order of magnitude of the range between the shortest and the longest length of the tubular sections to which the machine may be adjusted.
  • This adjustment may be carried out in a manner which is known per se by changing the length of web which is drawn during one rotation of the perforating knives.
  • the circumferential speed of the knife rollers and adhesive applying means is not uniform. For example, this may be accomplished by using crank slide oscillation drives which, at the moment of providing the perforation or at the moment of the adhesive applying operation, drive the 4knives and the adhesive applicators at the web velocity.
  • a tubular web drawing machine processing six webs is pro-- vided in which the web-lengths between the adhesive applying devices up to the collecting roller are substantially equal. However, between the weakening devices and the adhesive applying devices, the lengths of the webs are unequal.
  • the Webs 19-23 Five of the Webs 19-23 are shown as being guided over the adhesive applying devices 14-18, respectively, and over the guide rollers 26-29, and 45-49, to the collecting roller 25.
  • the uppermost web 24 does not pass through any adhesive applying device and is guided over the rollers 51, 52, and 5t) to the collecting roller. From this collecting roller, all of the webs together run to a tube forming station and earing off station, not shown in the drawing.
  • the guide rollers 26-29 and 45-49 are so arranged that the lengths of the webs between the adhesive applying stations 14-18 and the collecting roller 25 are equal so that the adhesive applying devices can work synchronously.
  • the adhesive applying devices are staggered one above the other in a direction against movement of the web in order to provide a favorable guiding of the paper web during the adhesive applying operation.
  • Perforation or weakening devices 3944 are disposed in front of the adhesive applying devices 14-18 and the rollers 5l and 52, and the webs pass through these devices rst. In accordance with the present invention, these perforation devices are so arranged that their distances from the collecting roller 25 are unequal.
  • the weakening devices 39-44 may be disposed vertically one above the other, as shown in the drawing. With such an arrangement, the individual web-lengths between the weakening devices 3943 and the adhesive applying devices 14-18 and therefore also between the weakening devices 39-43 and the collecting roller 25 are unequal.
  • the length of the uppermost web 24 is also arranged so that it does not correspond to any length of the remaining webs, and this is accomplished using guide rollers 5l and 52.
  • the guide rollers 45-50 may, for example, be mounted to be adjustable by a slight amount in order to provide an arrangement for compensating for the differences in the staggered distances of the assembled webs due to the differences in extensibility of the webs or the tensioning thereof.
  • the lengths ⁇ of the webs between the adhesive applying devices 11i-18 and the collecting roller 25 are exactly the same in the medium position of these guide rollers 4&5() so that substantially equal web lengths can be considered to be available between the adhesive applying devices and the collecting roller.
  • the guide rollers 45-5 for being adjustable, are mounted in the free ends of levers 53-58 which are at their fulcrum ends connected in a manner known per se to selective turning means in order to be selectively adjustable along the arrows S9-64.
  • a bag tube making device for constructing bags from a plurality of webs of paper material or the like, the improvement which comprises: a collecting roller over which a plurality of webs may pass; a plurality of first means for applying transverse adhesive stripes to respective paper webs passing therethrough, said means all being disposed one above the other and spaced from said collecting roller to provide substantially equal lengths of the webs between said means and said roller; a plurality of second means spaced from said lirst means and all disposed in alignment one above the other for providing weakening lines transversely to the course of respective webs passing therethrough to deiine sections to be separated from the web, said second means being spaced from said collecting roller so that the length of each individual web between the collecting roller and the second means is unequal to the length of every other web therebetween.
  • a bag tube making device for constructing bags from a plurality of webs of paper material or the like, the improvement which comprises: a collecting roller over which a plurality of separate webs may be collected together; a plurality of first means for applying transverse adhesive stripes to respective paper webs passing therethrough for subsequently joining the webs together in a selected manner, said means all being disposed one above the other and spaced from said collecting roller to provide substantially equal lengths of the webs between said means and said roller; a plurality of second means spaced from said first means and all disposed in alignment one above the other for providing weakening lines disposed transversely to the course of respective webs passing therethrough to deline sections to be separated from each web, said second means being spaced from said collecting roller so that the length of each individual web between the collecting roller and the second means is unequal to the length of every other web therebetween, whereby the weakening lines are provided in the respective webs at diierent times.
  • An arrangement as dened in claim 1 further comprising a plurality of guide rollers, one for each of the webs, disposed between said collecting roller and said first means for passage of each of the webs over a respective one of said guide rollers, said guide rollers being positioned to provide substantially equal web lengths between said collecting roller and said first means.

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  • Making Paper Articles (AREA)
US300892A 1962-08-08 1963-08-08 Bag making device Expired - Lifetime US3260171A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW32766A DE1172107B (de) 1962-08-08 1962-08-08 Schlauchziehmaschine zum Herstellen von Werk-stuecken fuer Beutel mit gestaffelten Boeden

Publications (1)

Publication Number Publication Date
US3260171A true US3260171A (en) 1966-07-12

Family

ID=7600131

Family Applications (1)

Application Number Title Priority Date Filing Date
US300892A Expired - Lifetime US3260171A (en) 1962-08-08 1963-08-08 Bag making device

Country Status (4)

Country Link
US (1) US3260171A (fi)
DE (1) DE1172107B (fi)
FI (1) FI40767B (fi)
GB (1) GB976430A (fi)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210221567A1 (en) * 2019-03-29 2021-07-22 Beta (Shenzhen) Package Products Co., Ltd Environment-friendly paper protective bag manufacturing apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2013086A (en) * 1932-02-27 1935-09-03 Bagpak Inc Apparatus for and method of making multiwall bags
US2897730A (en) * 1955-11-07 1959-08-04 St Regis Paper Co Apparatus for manufacturing bag tubes
US2902906A (en) * 1954-11-02 1959-09-08 Windmoeller & Hoelscher Tube manufacturing machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2013086A (en) * 1932-02-27 1935-09-03 Bagpak Inc Apparatus for and method of making multiwall bags
US2902906A (en) * 1954-11-02 1959-09-08 Windmoeller & Hoelscher Tube manufacturing machines
US2897730A (en) * 1955-11-07 1959-08-04 St Regis Paper Co Apparatus for manufacturing bag tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210221567A1 (en) * 2019-03-29 2021-07-22 Beta (Shenzhen) Package Products Co., Ltd Environment-friendly paper protective bag manufacturing apparatus
US11731808B2 (en) * 2019-03-29 2023-08-22 Beta (Shenzhen) Package Products Co., Ltd Environment-friendly paper protective bag manufacturing apparatus

Also Published As

Publication number Publication date
GB976430A (en) 1964-11-25
DE1172107B (de) 1964-06-11
FI40767B (fi) 1969-01-31

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