US2726979A - Method of laminating - Google Patents

Method of laminating Download PDF

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Publication number
US2726979A
US2726979A US30023652A US2726979A US 2726979 A US2726979 A US 2726979A US 30023652 A US30023652 A US 30023652A US 2726979 A US2726979 A US 2726979A
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United States
Prior art keywords
web
tissue
wax
roll
laminating
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Expired - Lifetime
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Frank A Grant
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Continental Can Co Inc
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Continental Can Co Inc
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Publication date
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Priority to US30023652 priority Critical patent/US2726979A/en
Application granted granted Critical
Publication of US2726979A publication Critical patent/US2726979A/en
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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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/18—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising waxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • 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
    • D21H1/00—Paper; Cardboard
    • D21H1/02—Multi-ply material finished plies
    • D21H1/06—Apparatus
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/02—Metal coatings
    • D21H19/04—Metal coatings applied as foil
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/32—Multi-ply with materials applied between the sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31714—Next to natural gum, natural oil, rosin, lac or wax
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31801—Of wax or waxy material
    • Y10T428/31804—Next to cellulosic
    • Y10T428/31808—Cellulosic is paper

Definitions

  • a laminated sheet which has developed considerable utility in the last few years comprises a ply of metallic foil laminated to a ply of tissue by means of micro-crystalline wax.
  • a second ply of tissue is laminated to the first tissue ply by means of micro-crystalline wax which does not, however, completely penetrate the second ply.
  • the laminated web accordingly presents wax-free surfaces on both sides but when the web is formed into bags and the bags are subjected to heat and pressure the wax bleeds through the outermost tissue lamination and forms an excellent heat seal.
  • the present invention takes advantage of the penetrating power of micro-crystalline wax on tissue to efiect a one-step lamination by the application of wax to one side only of the intermediate sheet.
  • a supply roll of tissue paper from which a web 12 is fed over a vertically adjustable guide roll 14, thence over a guide roll 16 to a guide roll 18.
  • the web 12 forms a loop between the rolls 16 and 18 and a dancing roll 20 is supported in the loop and assures uniform tension on the web.
  • a coating roll 22 revolves partially immersed in a vat 24 of molten micro-crystalline wax.
  • a guide roll 26 presses the web 12 into contact with the roll 22 and is vertically adjustable to determine the extent of contact between the web 12 and the coating roll 22. From the coating roll 22 the web is drawn over a doctor wire 28 which removes excess wax.
  • a smoothing bar 30 receives the web from the doctor wire 28 and the extent of pressure between the web 12 and the wire 28 and the smoothing bar 30 is determined by a spreader bar 32.
  • the supply roll 34 delivers a web of foil 36 to a straightening roll 38, thence to a guide roll 40 and thence to a laterally adjustable guide roll 42.
  • the lateral adjustment of the roll 42 determines the extent of wrap of the foil web 36 around a controlled temperature roll 44 which is made vertically adjustable for the purpose of 2,726,979 Patented Dec- .13, 1 5
  • the supply roll 46 delivers a second tissue web 48 to a Pair of t n i ning 1 11s 0 an t n to a om ine r0 1 52 which also receives from the controlled temperature roll 44 the superimposed coated tissue Web 12 and foil web 36.
  • Th emper ture of th rol 44 is such that t Wax applied to the web 12 will penetrate through thatweb and eifect a bond between it and the foil web 36.
  • the temperature of the combining roll 52 is controlled so that the wax on the web 12 will penetrate only partly into the second tissue web 48 and effect a bond but will not provide a waxy exterior surface to the final lamination.
  • a rubber pressure roll 54 bears on the combining roll 52 and assures a proper meeting and lamination of the three webs.
  • first chilled or refrigerated roll 56 From the knit of the rubber roll 54 the combined web passes over a first chilled or refrigerated roll 56 then to a second chilled or refrigerated roll 58 from which the laminated webs pass to a first tempering roll 60, a second tempering roll 62, a guide roll 64 and a rewind roll 66.
  • a typical laminating operation involves the web 36, being made of .00035 foil with the webs 12 and 48 formed of smooth tissue weighing 10 /2 lbs. per ream with the coating roll 22 applying about 15 lbs. per ream of micro-crystalline wax containing a small amount of colloidal matter.
  • the wax is maintained in the vat at about 195 F.
  • the vat temperatures may range between and 210 depending on the job to be done.
  • the surface speed of the coating roll 22 does not necessarily match the lineal speed of the web 12.
  • the roll 22 is rotated at a speed sufficient to ensure that it will pick up an adequate supply of wax somewhat in excess of the amount intended to remain on the web 12, the excess being removed by the doctor wire 28.
  • the tempering rolls 60 and 62 are necessary where the lineal speed of the whole operation is high and where it is desired not fully to chill the wax on the relatively small diameter rolls 56 and 58. In such case the final chill is applied by the tempering rolls of relatively large diameter, thus tending to avoid the formation of pin-hole cracks in the wax.
  • the apparatus may be made quite compact, that the threading and rethreading job is much simplified and that the controls, though simple, are sufficiently varied to enable the apparatus to meet any laminating problem apt to be encountered.
  • a method of laminating comprising: coating one side only of a single pervious web with molten microcrystalline wax; causing said wax to penetrate through said pervious web while superimposing an impervious web on the side of said pervious web opposite that to which the coating was applied; superimposing a pervious web on the original coated side of the first named pervious web, causing said wax to penetrate said second pervious web while limiting the penetration to less than the thickness of said second pervious web.
  • a method of laminating comprising: continuously and simultaneously advancing a web of metallic foil, a first tissue web and a second tissue web; applying a coating of molten, micro-crystalline wax to one side only of said first tissue web; superimposing the uncoated side of said first tissue web on the web of metallic foil at a temperaturesutficient to cause penetration of the wax through the tissue to cause adhesion between the foil and the tissue; thereafter superimposing said second tissue web on the coated side of the first tissue web at a temperature suflicient to cause partial penetration by the wax of the second tissue web and adhesion between the two tissue webs.

Description

Dec. 13, 1955 F. A. GRANT METHOD OF LAMINATING Filed July 22, 1952 INVENTOR Fkm/x A. 6729; BY
ATTORNEY United States Patent METHOD or LAMINATING Frank A. Grant, Richmond, Va., assignor, by mesne assignments, to Continental Can Company, Inc., New York, N. Y., a corporation of New York Application July 22, 1952, Serial No. 300,236
3 Claims. (Cl. 154-129) It is an object of this invention to provide a method and apparatus for laminating at least three webs by a single continuous operation, the method and apparatus being especially useful where one of the webs is of highly impervious barrier material.
It is a further object of this invention to provide a method and apparatus as aforesaid in which the laminating agent is applied to only one intermediate Web.
It is a further object of this invention to provide a method and apparatus as aforesaid in which the job of threading and rethreading is extremely simple.
It is a further object of this invention to provide a method and apparatus as aforesaid in which there are available a variety of controls permitting the application of the method and apparatus to webs of greatly varying strength, caliper and porosity.
The above and other objects will be made clear from the following detailed description taken in connection with the annexed drawing.
A laminated sheet which has developed considerable utility in the last few years comprises a ply of metallic foil laminated to a ply of tissue by means of micro-crystalline wax. A second ply of tissue is laminated to the first tissue ply by means of micro-crystalline wax which does not, however, completely penetrate the second ply. The laminated web accordingly presents wax-free surfaces on both sides but when the web is formed into bags and the bags are subjected to heat and pressure the wax bleeds through the outermost tissue lamination and forms an excellent heat seal.
The present invention takes advantage of the penetrating power of micro-crystalline wax on tissue to efiect a one-step lamination by the application of wax to one side only of the intermediate sheet.
Referring now to the drawing, there is shown a supply roll of tissue paper from which a web 12 is fed over a vertically adjustable guide roll 14, thence over a guide roll 16 to a guide roll 18. The web 12 forms a loop between the rolls 16 and 18 and a dancing roll 20 is supported in the loop and assures uniform tension on the web. A coating roll 22 revolves partially immersed in a vat 24 of molten micro-crystalline wax.
A guide roll 26 presses the web 12 into contact with the roll 22 and is vertically adjustable to determine the extent of contact between the web 12 and the coating roll 22. From the coating roll 22 the web is drawn over a doctor wire 28 which removes excess wax. A smoothing bar 30 receives the web from the doctor wire 28 and the extent of pressure between the web 12 and the wire 28 and the smoothing bar 30 is determined by a spreader bar 32.
The supply roll 34 delivers a web of foil 36 to a straightening roll 38, thence to a guide roll 40 and thence to a laterally adjustable guide roll 42. The lateral adjustment of the roll 42 determines the extent of wrap of the foil web 36 around a controlled temperature roll 44 which is made vertically adjustable for the purpose of 2,726,979 Patented Dec- .13, 1 5
reg lat ng the exten of wrapof the. up r mposed .foil web 36 and coated tissue web 12.
The supply roll 46 delivers a second tissue web 48 to a Pair of t n i ning 1 11s 0 an t n to a om ine r0 1 52 which also receives from the controlled temperature roll 44 the superimposed coated tissue Web 12 and foil web 36.
Th emper ture of th rol 44 is such that t Wax applied to the web 12 will penetrate through thatweb and eifect a bond between it and the foil web 36. The temperature of the combining roll 52 is controlled so that the wax on the web 12 will penetrate only partly into the second tissue web 48 and effect a bond but will not provide a waxy exterior surface to the final lamination.
A rubber pressure roll 54 bears on the combining roll 52 and assures a proper meeting and lamination of the three webs.
From the knit of the rubber roll 54 the combined web passes over a first chilled or refrigerated roll 56 then to a second chilled or refrigerated roll 58 from which the laminated webs pass to a first tempering roll 60, a second tempering roll 62, a guide roll 64 and a rewind roll 66.
A typical laminating operation involves the web 36, being made of .00035 foil with the webs 12 and 48 formed of smooth tissue weighing 10 /2 lbs. per ream with the coating roll 22 applying about 15 lbs. per ream of micro-crystalline wax containing a small amount of colloidal matter. In such an operation the wax is maintained in the vat at about 195 F. In practice the vat temperatures may range between and 210 depending on the job to be done. The surface speed of the coating roll 22 does not necessarily match the lineal speed of the web 12. The roll 22 is rotated at a speed sufficient to ensure that it will pick up an adequate supply of wax somewhat in excess of the amount intended to remain on the web 12, the excess being removed by the doctor wire 28.
The tempering rolls 60 and 62 are necessary where the lineal speed of the whole operation is high and where it is desired not fully to chill the wax on the relatively small diameter rolls 56 and 58. In such case the final chill is applied by the tempering rolls of relatively large diameter, thus tending to avoid the formation of pin-hole cracks in the wax.
It will be clear from the foregoing that the apparatus may be made quite compact, that the threading and rethreading job is much simplified and that the controls, though simple, are sufficiently varied to enable the apparatus to meet any laminating problem apt to be encountered.
While certain specific embodiments of the invention have been illustrated and described, it is not intended to limit the invention to the precise details disclosed but only as set forth in the snbjoined claims which are to be broadly construed.
I claim:
1. A method of laminating comprising: coating one side only of a single pervious web with molten microcrystalline wax; causing said wax to penetrate through said pervious web while superimposing an impervious web on the side of said pervious web opposite that to which the coating was applied; superimposing a pervious web on the original coated side of the first named pervious web, causing said wax to penetrate said second pervious web while limiting the penetration to less than the thickness of said second pervious web.
2. A method of laminating comprising: continuously and simultaneously advancing a web of metallic foil, a first tissue web and a second tissue web; applying a coating of molten, micro-crystalline wax to one side only of said first tissue web; superimposing the uncoated side of said first tissue web on the web of metallic foil at a temperaturesutficient to cause penetration of the wax through the tissue to cause adhesion between the foil and the tissue; thereafter superimposing said second tissue web on the coated side of the first tissue web at a temperature suflicient to cause partial penetration by the wax of the second tissue web and adhesion between the two tissue webs.
3. A method as set forth in claim 2 in which the weight per ream of wax applied exceeds the weight per ream of the first tissue web.
- References Cited in the file of this patent UNITED STATES PATENTS ne.22,130 Grant July 7, 1942 Y 1,217,819 Peterson Feb. 27, 1917 2,031,036 Dreymann Feb; 18,1936 2,158,754 Hodgdon May 16, 1939 2,212,122 Miller Aug. 20, 1940 2,434,795 Glasing et a1. Jan. 20, 1948 2,474,619 Farrell et a1. June 28, 1949 10 John C. Dean, Paper Trade Journal, vol. 120, No. 7, Feb.
15, 1945, pages 28-32 (Fig. 3 sh0ws"apparatus)

Claims (1)

  1. 2. A METHOD OF LAMINATING COMPRISING: CONTINUOUSLY AND SIMULTANEOUSLY ADVANCING A WEB OF METALLIC FOIL, A FIRST TISSUE WEB AND A SECOND TISSUE WEB; APPLYING A COATING OF MOLTEN, MICRO-CRYSTALLINE WAX TO ONE SIDE ONLY OF SAID FIRST TISSUE WEB; SUPERIMPOSING THE UNCOATED SIDE OF SAID FIRST TISSUE WEB ON THE WEB OF METALLIC FOIL AT A TEMPERATURE SUFFICIENT TO CAUSE PENETRATION OF THE WAX THROUGH THE TISSUE TO CAUSE ADHESION BETWEEN THE FOIL AND THE TISSUE; THEREAFTER SUPERIMPOSING SAID SECOND TISSUE WEB ON THE COATED SIDE OF THE FIRST TISSUE WEB AT A TEMPERATURE SUFFICIENT TO CAUSE PARTIAL PENETRATION BY THE WAX OF THE SECOND TISSUE WEB AND ADHESION BETWEEN THE TWO TISSUE WEBS.
US30023652 1952-07-22 1952-07-22 Method of laminating Expired - Lifetime US2726979A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778760A (en) * 1954-07-08 1957-01-22 Kalamazoo Vegets Le Parchment Moisture proof heat sealable wrapping material
US2818904A (en) * 1955-08-08 1958-01-07 Alsynite Company Of America Press for webs
US3013923A (en) * 1957-02-11 1961-12-19 Chicago Carton Co Metal foil bonding
US3060995A (en) * 1958-01-28 1962-10-30 Lembo Frank Apparatus for continuously manufacturing plastic laminated textile films
US3149563A (en) * 1961-05-12 1964-09-22 Minnesota Mining & Mfg Stencil-forming sheet material assembly
US3362866A (en) * 1965-09-01 1968-01-09 Zahn Irwin Machine for making laminated tape
US3395063A (en) * 1962-04-10 1968-07-30 Pires And Mourato Vermelho Process for the preparation of sterile dressings
US3542621A (en) * 1968-07-26 1970-11-24 Reynolds Metals Co Method and apparatus for continuously laminating a sheet of material to each side of another sheet of material
FR2559467A1 (en) * 1984-02-10 1985-08-16 Recticel IMPROVED MACHINE FOR THERMAL ADHESIVE OF FABRICS OR FILMS ON FLEXIBLE OR RIGID SUPPORT

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1217819A (en) * 1916-07-07 1917-02-27 Combination Machine Company Waxed or paraffined sheet or web.
US2031036A (en) * 1934-05-17 1936-02-18 Composition of matter and method
US2158754A (en) * 1936-08-25 1939-05-16 Theodore A Hodgdon Apparatus for the manufacture of production of laminated sheet material
US2212122A (en) * 1937-12-30 1940-08-20 Barrett Co Roofing
USRE22130E (en) * 1942-07-07 Apparatus for making laminated
US2434795A (en) * 1944-07-01 1948-01-20 Westfield River Paper Company Method and machine for laminating
US2474619A (en) * 1944-01-22 1949-06-28 Marathon Paper Mills Co Heat-sealable sheet material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE22130E (en) * 1942-07-07 Apparatus for making laminated
US1217819A (en) * 1916-07-07 1917-02-27 Combination Machine Company Waxed or paraffined sheet or web.
US2031036A (en) * 1934-05-17 1936-02-18 Composition of matter and method
US2158754A (en) * 1936-08-25 1939-05-16 Theodore A Hodgdon Apparatus for the manufacture of production of laminated sheet material
US2212122A (en) * 1937-12-30 1940-08-20 Barrett Co Roofing
US2474619A (en) * 1944-01-22 1949-06-28 Marathon Paper Mills Co Heat-sealable sheet material
US2434795A (en) * 1944-07-01 1948-01-20 Westfield River Paper Company Method and machine for laminating

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778760A (en) * 1954-07-08 1957-01-22 Kalamazoo Vegets Le Parchment Moisture proof heat sealable wrapping material
US2818904A (en) * 1955-08-08 1958-01-07 Alsynite Company Of America Press for webs
US3013923A (en) * 1957-02-11 1961-12-19 Chicago Carton Co Metal foil bonding
US3060995A (en) * 1958-01-28 1962-10-30 Lembo Frank Apparatus for continuously manufacturing plastic laminated textile films
US3149563A (en) * 1961-05-12 1964-09-22 Minnesota Mining & Mfg Stencil-forming sheet material assembly
US3395063A (en) * 1962-04-10 1968-07-30 Pires And Mourato Vermelho Process for the preparation of sterile dressings
US3362866A (en) * 1965-09-01 1968-01-09 Zahn Irwin Machine for making laminated tape
US3542621A (en) * 1968-07-26 1970-11-24 Reynolds Metals Co Method and apparatus for continuously laminating a sheet of material to each side of another sheet of material
FR2559467A1 (en) * 1984-02-10 1985-08-16 Recticel IMPROVED MACHINE FOR THERMAL ADHESIVE OF FABRICS OR FILMS ON FLEXIBLE OR RIGID SUPPORT
EP0153220A2 (en) * 1984-02-10 1985-08-28 RECTICEL, Société dite: Machine for heat sealing webs or films onto a flexible or rigid support
EP0153220A3 (en) * 1984-02-10 1986-03-26 RECTICEL, Société dite: Machine for heat sealing webs or films onto a flexible or rigid support

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