EP0135520B1 - Dispositif pour fabriquer des sacs multi-couches - Google Patents

Dispositif pour fabriquer des sacs multi-couches Download PDF

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Publication number
EP0135520B1
EP0135520B1 EP84900620A EP84900620A EP0135520B1 EP 0135520 B1 EP0135520 B1 EP 0135520B1 EP 84900620 A EP84900620 A EP 84900620A EP 84900620 A EP84900620 A EP 84900620A EP 0135520 B1 EP0135520 B1 EP 0135520B1
Authority
EP
European Patent Office
Prior art keywords
adhesive
nozzles
shut
roll
rolls
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
EP84900620A
Other languages
German (de)
English (en)
Other versions
EP0135520A1 (fr
Inventor
Lasse Sandgren
Martti Kutvonen
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
Priority to AT84900620T priority Critical patent/ATE30856T1/de
Publication of EP0135520A1 publication Critical patent/EP0135520A1/fr
Application granted granted Critical
Publication of EP0135520B1 publication Critical patent/EP0135520B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/10—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the liquid or other fluent material being supplied from inside the roller
    • 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
    • B31B70/62—Uniting opposed surfaces or edges; Taping by adhesives

Definitions

  • the present invention relates to a device for fabricating multi-layer sacks comprising a plurality of rotatable elongated first rollers positioned parallel and adjacent to each other transverse to the extension of paper webs for applying adhesive on said webs forming the various layers, followed by a rotatable short second roller for applying a lengthwise line of adhesive on one surface of the mult-layer web, followed by a folding station for bottom shut-off flaps, which is followed by at least one third roller for applying adhesive for closing the bottom shut-off flaps.
  • a device of this type is disclosed in US-A-3 350 774, in which conventional adhesive transfer rollers are used for applying adhesive from open adhesive containers via transfer rollers to conventional applicator rollers.
  • the prior art jointing adhesive spreading devices used for the fabrication of multi-layer paper sacks employ open adhesive troughs or gutters from which the adhesive is transferred through scraper-equipped arrays of rolls onto an actual adhesive spreading roll.
  • Such assembly involves, however, several drawbacks, namely in open adhesive gutters, the adhesive sets and toxic solvents evaporate to environment and the production rate is limited since the increase of speed leads to more splashing of glue. Also the repeated need for washing lowers efficiency. Scrapers that are worn out or out of order let through lumps of glue leading to improper joints and increased adhesive consumption.
  • rollers are known per se adhesive spreading rollers with normally closed nozzles on their circumference being connected by adhesive supply passages to an adhesive supply means under pressure and having shut-off means adapted to open by action of an external pressure when the rollers are rotated, the periphery of the elongated first rollers being provided with an axially extending array of such nozzles whereas the periphery of the short second roller is provided with a circumferential array of nozzles.
  • a roll 10 is mounted on a shaft 11 which is rotated by a drive motor 12 through a gear 13.
  • Mounted on shaft 11 is an adhesive dispensing chamber 14 which on the sides and on the inner rim is confined by a core member 15 rotating along with shaft 11.
  • chamber 14 On the outer rim side, chamber 14 is confined by a fixed cylinder jacket 17 packed with seals 16 relative to core member 15. The adhesive is driven by the application of pressure through a hose 18 passed through rim jacket 17.
  • the partially circling array of nozzles 20 is located adjacent the edge of roll 10 and associated with the ends of this array are one or more axially extending arrays of nozzles 21.
  • Nozzles 20, 21 are each individually connected by means of hoses 19 to adhesive dispensing chamber 14.
  • the nozzle assembly shown in Fig. 3 comprises a tubular body 21 which is secured to a roll jacket hole by means of locking nuts 29 and 30. Threaded on the outer end of body 21 is a nozzle cap 22 whose orifice is closed by a shut-off means 23 through the pressure of a spring 24. A rod 25 associated with shut-off means 23 urges another shut-off means 26 against the action of a spring 28 so as to keep shut-off means 26 off a seat surface 27 permitting the passage of adhesive. Shut-off means 26 along with its spring 28 is fitted in a mounting sleeve 31 secured with threads 32 inside said body 21. The top end of sleeve 31 is provided with slots 33 for allowing the passage of adhesive.
  • shut-off means 23 temporarily inwards with a consequence that adhesive is extruding out of the nozzle slot.
  • the amount of adhesive coming out of the nozzle depends on the rotational speed of roll 10, viscosity of the adhesive and the supply pressure applied.
  • the amount of adhesive can be controlled by controlling the supply pressure.
  • the same roll can be provided with a sufficient number of nozzle arrays by means of which the positions and lengths of adhesive joints can be adjusted by only activating the desired arrays of nozzles.
  • the machine can be readily readjusted to make it suitable for the fabrication of e.g. sacks of various sizes.
  • the roll shown in Fig. 1 is intended for producing a patterned adhesive joint for a sealing flap made in the bottom of a sack by folding. The width of a bottom can be varied by deciding to use either one of the axial arrays 21.
  • the bottom end of said nozzle body 21 is provided with a plastic flexible connecting hose 19 whose other end communicates with adhesive dispensing chamber 14.
  • FIG. 4 The application of a jointing adhesive spreading roll of the invention is depicted in Fig. 4.
  • the figure shows diagrammatically an assembly for the fabrication of multi-layer paper sacks or bags.
  • Rolls E are provided with axially extending arrays of nozzles for making transverse joints or seams in the superimposed paper webs that make up the various layers of a paper sack.
  • an axially short sizing or gluing roll C around whose periphery extends an array of adhesive nozzles for producing a lengthwise joint in view of making a hose.
  • the present case deals with the fabrication of sacks sealable at both ends, the filling end of a sack being fitted with a tubular filling valve.
  • a hose or tube is cut into lengths in a manner that the filling ends of two successive sack blanks are at any given moment abutting and at the next position the bottoms are abutting.
  • Such blanks are passed onto two parallel bottom fabricating lines.
  • Each bottom fabricating line is provided with two pairs of rolls A, A, and A, A, on the same axial line.
  • the sealable sack bottoms are folded in a per se known manner and pass each under its own pair of rolls A, At.
  • roll A produces a patterned joint (see Fig. 1) and roll A, produces a straight bottom joint.
  • a roll B applies an adhesive joint for fastening a filling valve tube.
  • Rolls D make adhesive joints at each end of a sack for gluing a bottom flap.
  • the adhesive is supplied from a pump not shown to a manually operated shut-off valve 1, through a manually operated pressure reducer 5 and an electrical adhesive volume controller 4 and further through an electric three-way valve 3 to an adhesive lead-in 2 which is set up as described in connection with Figs. 1 and 2.
  • the adhesive When operating a device of the invention, the adhesive is continuously in a closed space. Setting of the adhesive cannot occur, nor can toxic solvents evaporate to the environment. The way an adhesive is supplied or fed does not limit the rate of production. In order to speed up drying of adhesive joints and, hence, to further increase the rate of production, it is plausible to employ a preheated adhesive. Adhesive consumption is low since the adhesive can be accurately metered in proper positions.

Landscapes

  • Making Paper Articles (AREA)

Abstract

Le dispositif comprend un certain nombre de rouleaux pourvus d'ajutages d'adhésif (20), ces rouleaux étant agencés pour la fabrication de sacs en papier multicouches de sorte qu'une pluralité de rouleaux d'étalage allongés dans le sens axial (E), pourvus d'un réseau d'ajutages s'étendant axialement à la périphérie, sont disposés en parallèle et adjacents entre eux pour réaliser des joints transversaux sur des bandes de papier qui composent les différentes couches. Sur la même ligne se trouve un rouleau d'encollage axialement court (C) dont la périphérie est pourvue d'un réseau circonférentiel d'ajutages d'adhésif produisant un joint en longueur pour la fabrication de tubes. En aval de la station de pliage des volets de fermeture de fond est disposé un ou plusieurs rouleaux d'encollage (A, A1) pour les volets de fermeture de fond, et en dernier, sur la ligne, se trouve un rouleau (D) produisant des joints adhésifs permettant le collage d'un volet de fond.

Claims (8)

1. Dispositif pour la fabrication de sacs multi- couches comprenant une pluralité de premiers rouleaux (E) allongés, rotatifs, disposés parallèlement et adjacents l'un à l'autre, transversalement au sens dans lequel s'étendent les nappes de papier, pour appliquer de l'adhésif sur lesdites nappes formant les différentes couches, suivis d'un deuxième rouleau (C) rotatif, court, pour appliquer une ligne longitudinale d'adhésif sur une surface de la nappe multi-couche, suivi d'un poste de pliage pour rabats de fermeture de fond, qui est suivi d'au moins un troisième rouleau (A, Ai) pour appliquer de l'adhésif et fermer les rabats de fond, caractérisé par le fait que les rouleaux, à ajutages (20), normalement fermés, sur leur circonférence, sont raccordés, par des passages d'alimentation en adhésif (19, 14, 18), à des moyens sous pression d'alimentation en adhésif, chaque ajutage possédant un moyen d'obturation (23) agencé pour s'ouvrir par action d'une pression extérieure exercée par la surface de nappe, quand les rouleaux (E, C, A, Ai) tournent, la périphérie des premiers rouleaux allongés (E) étant munie d'une rangée, s'étendant axialement, de tels ajutages (20), alors que la périphérie du second rouleau court (C) est munie d'une rangée circonférentielle d'ajutages (20).
2. Dispositif selon la revendication 1, caractérisé par le fait que, sur la même ligne axiale, est prévue au moins une paire de rouleaux d'encollage de rabat de fond (A, Ai), les rangées d'ajutages d'adhésif d'un rouleau (A) produisant un joint à dessin et l'autre rouleau (A1) produisant un joint droit.
3. Dispositif selon la revendication 2, caractérisé par le fait que le poste d'encollage des rabats de fond comprend deux paires de rouleaux (A, Ai; A, Ai), une paire pour chaque extrémité d'un sac, et, entre une des paires de rouleaux (A, A1) et le rouleau d'encollage de rabat de fond (D), est prévu un rouleau d'encollage de clapet de fermeture (B).
4. Dispositif selon la revendication 3, caractérisé par le fait que, pour encoller les rabats de fond, sont prévues deux chaînes de production parallèles.
5. Dispositif selon la revendication 1 ou 2, caractérisé par le fait que la périphérie dudit rouleau d'encollage axial court (C), des rouleaux d'encollage de rabats de fond (A, Ai) ainsi que dudit rouleau (D) d'encollage dudit rabat de fond, est pourvue d'une rangée d'ajutages d'adhésif d'étendant partiellement ou complètement autour d'eux.
6. Dispositif selon la revendication 5, caractérisé par le fait qu'au moins certains des rouleaux d'encollage des rabats de fond (A, A1, D) comprennent une rangée d'adjutages d'adhésif (20) sur le bord desdits rouleaux et, à cette rangée, sont raccordées une ou plusieurs rangées axiales d'ajutages (21).
7. Dispositif selon l'une des revendications 1 à 6, caractérisé par le fait que, pour commander les positions et longueurs des joints d'adhésif en mettant en action ou hors d'action des ajutages (20, 21), ces derniers sont munis de corps d'ajutage (21) et de coiffes d'ajutage (22) amovibles par rapport à leurs corps (21) et comportent un moyen d'obturation (26) pour maintenir fermé le passage d'adhésif quand on enlève la coiffe d'ajutage (22).
8. Dispositif selon la revendication 1, caractérisé par le fait que chaque rouleau d'enduction (10) est associé à une chambre de distribution - d'adhésif (14) dont la périphérie extérieure est délimitée par un manchon de bord fixe (17) et la périphérie intérieure par un noyau (15) tournant avec l'axe du rouleau (11), et ledit manchon (17) est associé à un tube (18) de fourniture d'adhésif et ladite chambre de distribution d'adhésif (14) est raccordée à chaque ajutage (20, 21) au moyen de tubes ou tuyaux (19) reliés audit noyau (15).
EP84900620A 1983-02-04 1984-02-03 Dispositif pour fabriquer des sacs multi-couches Expired EP0135520B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84900620T ATE30856T1 (de) 1983-02-04 1984-02-03 Vorrichtung zum herstellen von mehrschichtpapiers|cken.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI830385 1983-02-04
FI830385A FI71678C (fi) 1983-02-04 1983-02-04 Anordning foer utbredning av foglim pao pappersyta.

Publications (2)

Publication Number Publication Date
EP0135520A1 EP0135520A1 (fr) 1985-04-03
EP0135520B1 true EP0135520B1 (fr) 1987-11-19

Family

ID=8516710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84900620A Expired EP0135520B1 (fr) 1983-02-04 1984-02-03 Dispositif pour fabriquer des sacs multi-couches

Country Status (5)

Country Link
EP (1) EP0135520B1 (fr)
JP (1) JPS60500407A (fr)
DE (1) DE3467514D1 (fr)
FI (1) FI71678C (fr)
WO (1) WO1984003058A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823179C1 (fr) * 1988-07-08 1989-10-05 Georg 5620 Velbert De Krebs
ITMI20040813A1 (it) * 2004-04-26 2004-07-26 Cielle Imballaggi Di Tommaso Loreto Srl Fogli per formare mediante termosaldatura sacchi o buste di carta

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2590339A (en) * 1949-05-06 1952-03-25 Minkow Robert Machine for applying glue in stripes to sheet material
US2753768A (en) * 1953-05-12 1956-07-10 St Regis Paper Co Method and apparatus for application of valve sleeves during tubing operation
US2818003A (en) * 1953-09-03 1957-12-31 St Regis Paper Co Apparatus for making a multi-ply valve bag having an extended intermediate valve ply
US2791160A (en) * 1954-02-15 1957-05-07 Crown Zellerbach Corp Method of making valve bags
US2895387A (en) * 1956-12-07 1959-07-21 Arkell And Smiths Multiply bag with supplemental sleeve
US3332324A (en) * 1964-02-20 1967-07-25 Kalle Ag Method and apparatus for the manufacture of a combined web of material suitable for the manufacture of pouches
US3530774A (en) * 1967-12-13 1970-09-29 Hoerner Waldorf Corp Method of making a flat bottom multi-ply bag
DK122580B (da) * 1970-04-06 1972-03-20 Nordan V Ronneberg H Påføringsorgan for lim eller til lignende anvendelser.

Also Published As

Publication number Publication date
EP0135520A1 (fr) 1985-04-03
FI71678B (fi) 1986-10-31
JPS60500407A (ja) 1985-03-28
FI71678C (fi) 1987-02-09
FI830385A0 (fi) 1983-02-04
FI830385L (fi) 1984-08-05
WO1984003058A1 (fr) 1984-08-16
DE3467514D1 (en) 1987-12-23

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