US3364050A - Method of treating a cut edge and its adjacent portion in a porous sheet material - Google Patents

Method of treating a cut edge and its adjacent portion in a porous sheet material Download PDF

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Publication number
US3364050A
US3364050A US376803A US37680364A US3364050A US 3364050 A US3364050 A US 3364050A US 376803 A US376803 A US 376803A US 37680364 A US37680364 A US 37680364A US 3364050 A US3364050 A US 3364050A
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US
United States
Prior art keywords
web
cut edge
sheet material
porous sheet
treating
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
US376803A
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English (en)
Inventor
Rausing Hans Anders
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.)
Tetra Pak AB
Original Assignee
Tetra Pak AB
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 Tetra Pak AB filed Critical Tetra Pak AB
Application granted granted Critical
Publication of US3364050A publication Critical patent/US3364050A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
    • D21H5/0047—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by spraying or projecting
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/16—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment
    • D06M23/18—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment for the chemical treatment of borders of fabrics or knittings; for the thermal or chemical fixation of cuttings, seams or fibre ends
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/50—Spraying or projecting
    • 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
    • B31B50/742—Coating; Impregnating; Waterproofing; Decoating
    • B31B50/743—Coating or impregnating edges or corners

Definitions

  • ABSTRACT OF THE DISCLOSURE A method to impregnate a laminated web of material which includes a paper layer to prevent wicking by the paper layer. An impregnating agent is applied to one surface of the web material and is pulled into and through the material by a suction source closely adjacent the other side of the material.
  • the present invention relates to a method of treating a cut edge and its adjacent portion in porous sheet material, for instance against capillary liquid absorption, particularly in a fibrous body layer in a laminate web having at least one fully covering outer layer of heatsealable plastic.
  • a web of packaging material is shaped into a tube by bending and uniting the edge, said tube having a longitudinal joint of the normal overlapping type and being supplied in its interior with a liquid to be packed and being divided into filled and sealed packages of cushion or tetrahedral shape by being sealed in narrow zones transversal to the tube axis.
  • the web of packaging material generally consists of a fibrous body layer, for instance of paper, and a fully covering coating layer of a heat-scalable plastic applied to one side corresponding to the inside of the tube.
  • This coating layer is liquid-proof and permits the tube to be sealed so as to form packages by means of pressure and supply of heat in the said zone.
  • the longitudinal overlapping joint of the tube between the web margins may be established by means of heatsealing the coating layers on one side of the web to the opposite side of the web.
  • one cut edge of the body layer faces the filling material, however.
  • the filling material may be absorbed by capillary action through the cut edge in question, thus destroying the package wall material and/or destroying one of the sealing joints of the package.
  • the present process aims at eliminating these and other drawbacks and is essentially characterized in that the porous sheet material, before the said out edge is established, has an impregnating agent applied to it in a relatively low-viscosity form, eg parafiin in a melt, solution or suspension, in a zone divided by the corresponding cut line on one of its sides, preferably on its upper side, while in the corresponding zone on the opposite side it is subjected to such absorbing action that the impregnating agent is absorbed actively through the sheet material from the side on which it is supplied to the op posite side, whereupon excess agent, it any, is removed from the latter.
  • a relatively low-viscosity form eg parafiin in a melt, solution or suspension
  • a web 1 is led continuously beneath a nozzle 2 or the like which sweeps over a longitudinal zone 3 in which the web 1 is intended to be divided into two partial webs 5 and 6 by means of a longitudinal cut 4.
  • the nozzle 2 is continuously supplied with a lowviscosity impregnating agent, e.g. parafiin in a melt, solution or suspension, from a source not shown and applies the said impregnating agent to the upper side of the web I in the zone 3.
  • a lowviscosity impregnating agent e.g. parafiin in a melt, solution or suspension
  • a funnel-shaped suction box 7 resting with the edge of its widest end opening against the underside of the web 1.
  • a pressure below atmospheric In the suction box 7 there is maintained, by means not shown and via its smaller end opening, a pressure below atmospheric.
  • the suction box 7 is in such a position relatively to the nozzle 2 and the pressure below atmospheric in the suction box is adjusted in such a Way that the quantity of impregnating agent which is supplied to the upper side of the Web 1 by means of the nozzle 2 is absorbed through the web 1 so that the latter is impregnated with the agent in question in a through portion corresponding to the said zone 3.
  • the web 1 is divided continuously according to the invention into the two partial Webs 5 and 6 by means of a longitudinal cut 4 essentially centrally of the zone 3.
  • This slitting can be carried out by means known per se. It the partial webs 5 and 6 are to have a coating layer applied to either side, this application may take place either prior to or after the cutting but of course always after impregnation.
  • the invention has been described with respect to a zonewise impregnation of a running web.
  • the invention is also applicable to local impregnation in general of all kinds of porous sheet material where it is important that the cut edge in question is effectively sealed against liquid absorption through the cut edge.
  • a method of providing a laminated web material comprising the steps of: supplying a web of fibrous material, applying an impregnating agent to one side of said web in a narrow zone, applying suction pressure on the side of said web opposite to said narrow zone to pull said impregnating agent into said web, applying a coating of heat sealing plastic material to one side of said web and cutting said web through said narrow zone to provide a web material with an impregnated edge.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Making Paper Articles (AREA)
  • Cartons (AREA)
US376803A 1963-07-01 1964-06-22 Method of treating a cut edge and its adjacent portion in a porous sheet material Expired - Lifetime US3364050A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE725663 1963-07-01

Publications (1)

Publication Number Publication Date
US3364050A true US3364050A (en) 1968-01-16

Family

ID=20270871

Family Applications (1)

Application Number Title Priority Date Filing Date
US376803A Expired - Lifetime US3364050A (en) 1963-07-01 1964-06-22 Method of treating a cut edge and its adjacent portion in a porous sheet material

Country Status (5)

Country Link
US (1) US3364050A (de)
BE (1) BE649998A (de)
CH (1) CH424206A (de)
GB (1) GB1004447A (de)
NL (1) NL6406645A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2522546A1 (de) * 1974-05-22 1975-12-04 Tetra Pak Int Verpackungsmaterialbahn mit saugfreien kantenbereichen, verfahren zu deren herstellung sowie aus dieser hergestellter verpackungsbehaelter
US3980045A (en) * 1973-03-05 1976-09-14 Henkel & Cie G.M.B.H. Apparatus for applying liquid finishing agents to textile threads
USRE30699E (en) * 1979-04-02 1981-08-04 J. M. Huber Corporation Polyurethanes containing amino organosilane modified clay
US6264743B1 (en) * 1999-10-29 2001-07-24 Nordson Corporation Vacuum assisted overspray controller and method
CN104313816A (zh) * 2014-10-23 2015-01-28 浙江得伟纺织科技有限公司 一种布料定型机的侧边上浆定型装置及其定型胶

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6015111A (ja) * 1983-07-06 1985-01-25 Nitto Boseki Co Ltd ガラス繊維布のプリプレグの製造法
US4738890A (en) * 1985-04-13 1988-04-19 Matsushita Electric Works, Ltd. Resin-impregnated base and method of manufacturing same
GB8628008D0 (en) * 1986-11-22 1986-12-31 Univ Manchester Barrier products

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1338624A (en) * 1918-12-05 1920-04-27 Otto A Heppes Process of making prepared roofing
US2470111A (en) * 1945-03-24 1949-05-17 George A Rubissow Method for bettering pelts and hides
US2500923A (en) * 1946-06-06 1950-03-21 American Asbestos Ind Inc Apparatus for manufacturing cement-asbestos board
US2653888A (en) * 1949-02-24 1953-09-29 Polaroid Corp Method of forming container blanks

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1338624A (en) * 1918-12-05 1920-04-27 Otto A Heppes Process of making prepared roofing
US2470111A (en) * 1945-03-24 1949-05-17 George A Rubissow Method for bettering pelts and hides
US2500923A (en) * 1946-06-06 1950-03-21 American Asbestos Ind Inc Apparatus for manufacturing cement-asbestos board
US2653888A (en) * 1949-02-24 1953-09-29 Polaroid Corp Method of forming container blanks

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980045A (en) * 1973-03-05 1976-09-14 Henkel & Cie G.M.B.H. Apparatus for applying liquid finishing agents to textile threads
DE2522546A1 (de) * 1974-05-22 1975-12-04 Tetra Pak Int Verpackungsmaterialbahn mit saugfreien kantenbereichen, verfahren zu deren herstellung sowie aus dieser hergestellter verpackungsbehaelter
USRE30699E (en) * 1979-04-02 1981-08-04 J. M. Huber Corporation Polyurethanes containing amino organosilane modified clay
US6264743B1 (en) * 1999-10-29 2001-07-24 Nordson Corporation Vacuum assisted overspray controller and method
CN104313816A (zh) * 2014-10-23 2015-01-28 浙江得伟纺织科技有限公司 一种布料定型机的侧边上浆定型装置及其定型胶

Also Published As

Publication number Publication date
NL6406645A (de) 1965-01-04
GB1004447A (en) 1965-09-15
CH424206A (de) 1966-11-15
BE649998A (de) 1964-11-03

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