US3344774A - Web support - Google Patents

Web support Download PDF

Info

Publication number
US3344774A
US3344774A US561577A US56157766A US3344774A US 3344774 A US3344774 A US 3344774A US 561577 A US561577 A US 561577A US 56157766 A US56157766 A US 56157766A US 3344774 A US3344774 A US 3344774A
Authority
US
United States
Prior art keywords
web
support
sheet
coating
web support
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
US561577A
Inventor
Swindells Geoffrey
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of US3344774A publication Critical patent/US3344774A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • B05C13/00—Means for manipulating or holding work, e.g. for separate articles
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B5/00—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B2700/00—Treating of textile materials, e.g. bleaching, dyeing, mercerising, impregnating, washing; Fulling of fabrics
    • D06B2700/18—Passing liquid through fibrous materials in closed containers with a form not determined by the nature of the fibrous material

Definitions

  • webs for example fabrics
  • an applicator device such as a doctor knife or rotating roller
  • the web is provided with a support as it passes under the applicator device.
  • the web support consists of a natural or synthetic continuous rubber band having a greater transverse dimension than the web and which is conveniently rotated in such a direction as to aid the motion of the web.
  • the web support provides a generally flat resilient support against which the underside of the web is maintained in abutment during the coating process.
  • a web support for use in the application of coating compositions to webs comprises a stationary sheet member, constructed from a material which is resistant to attack by the coating composition used, over the surface of which passes the web to be coated, said sheet member being supported by means which provide resilience normal to the plane of the web.
  • the sheet member is suitable for the sheet member to be non-flexible it is preferred that it is flexible.
  • our sheet member is made from sheet steel in which case a suitable thickness for the member can be selected in the range 0.005 inch to 0.025 inch. Alternatively any other suitable material may be used, for example, wood or plastic.
  • the sheet member is substantially flat over at least that part of its surface immediately beneath the applicator.
  • the resilient support means serves to allow vertical movement of the sheet member when the latter is subjected to vertical forces which are applied during a coating operation, especially when faulty or uneven webs are being coated. It will be realised that the vertical forces applied during the coating operation will vary a great deal from one web material to another and in view of this the resilient support means for use in our invention is chosen with the particular web material to be used in mind.
  • a suitable resilient support means comprises one or more layers of a polyurethane or other similar foam or sponge material.
  • the resilient support means may be in the form of one or more compression springs which are mounted on the underside of the sheet member.
  • our web support can itself be supported in any suitable manner it may be conveniently supported by a channel section member comprising a rectangular sheet base member having two low side walls along opposite edges of the sheet, the upper part of each wall being turned inwardly substantially at right angles to the wall.
  • Our web support is disposed in the channel member between the side walls in such a manner that each of the inturned parts overlaps a margin of the support surface, these margins conveniently being maintained in abutment with the underside of the inturned parts prior to a coating operation by virtue of slight compression of the resilient support means.
  • the side walls will conveniently be either parallel or at right angles to the line of motion of the web.
  • the channel member may be provided with two more side walls each of which may be provided with inturned parts along the remaining two opposed edges of the base memher.
  • the web is passed continuously between the support and the applicator device, such as a doctor knife, which retains a bank of the coating composition on the web and applies a depth of coating on the web approximately equal to the clearance maintained between the web and the applicator.
  • the applicator device such as a doctor knife
  • the resilient support means permits temporary displacement of the web support necessitated by fluctuations in fabric thickness and transit speed.
  • Our web support may equally well be used with any of the usual web materials for example fabric, paper, sheet metal, metal or glass fibre mesh, supported or unsupported plastic sheet material. It is further readily suited, at least in one of its embodiments, to any of the usual coating compositions used.
  • FIGURE 1 shows a side elevation view of one web support mounted in a suitable housing
  • FIGURE 2 shows a plan view of the web support and housing shown in FIGURE 1;
  • FIGURE 3 shows a section along line AA of FIG- URE 1.
  • the web support consists of a flat sheet member 1, one surface of which is in contact with the upper of two superimposed layers of a foam material denoted, respectively, by numerals 2 and 3.
  • the web support is housed in a channel section member comprising a base member 4 and side walls 5 extending along opposite edges of the base member. The upper parts of the walls are inturned as at 6 to overlap and be in abutment with marginal portions of the sheet member so causing slight compression of the foam layers.
  • the channel member is further provided with struts 7 which serve as means for mounting the device in position in preparation for a coating operation.
  • a web (not shown) is passed continuously under an applicator device ('also not shown) such as a doctor knife or rotating roller, which serves to maintain a bank of coating composition on the web and applies a coating on to the web.
  • an applicator device such as a doctor knife or rotating roller, which serves to maintain a bank of coating composition on the web and applies a coating on to the web.
  • the web passes under the applicator device it is maintained in contact with the free surface of the sheet member which is in a horizontal plane.
  • the sheet material is subjected to vertical forces during the coating operation, especially when faulty or uneven webs are being coated, these forces 7 g 3 being absorbed by compression of the layers of foam material.
  • the sheet member was a sheet of spring steel having the dimensions 0.012 inch x 6 inches long x 5 ft. 3 inches wide.
  • each of the foam layers was a sheet of polyurethane foam having the dimensions 0.5 inch thick x 6 inches long x 5 feet 3 inches wide.
  • the channel member was made from 16 S.W.G. mild steel sheet. It will be realised that if the fabric used is caused to pass centrally over the sheet member then the fabric (having a width of approximately 50 inches) will be bounded by marginal exposed portions of the sheet member (this having a width of 5 ft. 3 inches).
  • a coating apparatus means supporting a traveling Web to be coated; said means comprising a fixed support mounting a rectangular channel member; at least one resilient foam pad carried by and Within the channel section of said member; a flexible metallic sheet overlying said pad and adapted to support the web being coated; said sheet being impervious to and resistant to reaction with the coating material; an inturned portions formed by the channel member side walls whereby to retain the pad and sheet in assembled relationship within said channel member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)

Description

Oct. 3; 1967 G. SWINDELLS 3,344,774
WEB SUPPORT Filed June 29, 1966 FIG! jiva/z/vrae $20 666 (Siam/51.45
United States Patent 3,344,774 WEB SUPPORT Geoffrey Swindells, Hyde, England, assignor to Imperial Chemical Industries Limited, London, England, a corporation of Great Britain Filed June 29, 1966, Ser. No. 561,577 Claims priority, application Great Britain, June 29, 1965, 27,490/ 65 1 Claim (Cl. 118500) This invention relates to a web support for use in the application of coating compositions to webs.
Commonly webs, for example fabrics, have been provided with a coating of a coating composition by a technique which has involved passing the web continuously under an applicator device, such as a doctor knife or rotating roller, which serves to maintain a bank of coating composition on the web and applies a coating on to the web as it passes thereunder. Invariably the web is provided with a support as it passes under the applicator device. Usually the web support consists of a natural or synthetic continuous rubber band having a greater transverse dimension than the web and which is conveniently rotated in such a direction as to aid the motion of the web. The web support provides a generally flat resilient support against which the underside of the web is maintained in abutment during the coating process.
It has been found with such supports that, though they function adequately when first used, their useful life is limited. This has mainly been due to attack by the coating compositions used which inevitably come into contact with the support either by penetration through the web, when the web is porous, or by seepage over the edge or selvedge of the web used. This has resulted in a swelling of the resilient support with the result that its surface is rendered uneven which causes non-uniform depths of the coating composition to be applied on the web.
In accordance with the present invention a web support for use in the application of coating compositions to webs comprises a stationary sheet member, constructed from a material which is resistant to attack by the coating composition used, over the surface of which passes the web to be coated, said sheet member being supported by means which provide resilience normal to the plane of the web.
Though for a number of applications of our invention it is suitable for the sheet member to be non-flexible it is preferred that it is flexible.
Typically our sheet member is made from sheet steel in which case a suitable thickness for the member can be selected in the range 0.005 inch to 0.025 inch. Alternatively any other suitable material may be used, for example, wood or plastic.
Essentially in our invention the sheet member is substantially flat over at least that part of its surface immediately beneath the applicator.
The resilient support means serves to allow vertical movement of the sheet member when the latter is subjected to vertical forces which are applied during a coating operation, especially when faulty or uneven webs are being coated. It will be realised that the vertical forces applied during the coating operation will vary a great deal from one web material to another and in view of this the resilient support means for use in our invention is chosen with the particular web material to be used in mind. When the web is a fabric a suitable resilient support means comprises one or more layers of a polyurethane or other similar foam or sponge material. Alternatively the resilient support means may be in the form of one or more compression springs which are mounted on the underside of the sheet member.
Patented Oct. 3, 1967 ice Though our web support can itself be supported in any suitable manner it may be conveniently supported by a channel section member comprising a rectangular sheet base member having two low side walls along opposite edges of the sheet, the upper part of each wall being turned inwardly substantially at right angles to the wall. Our web support is disposed in the channel member between the side walls in such a manner that each of the inturned parts overlaps a margin of the support surface, these margins conveniently being maintained in abutment with the underside of the inturned parts prior to a coating operation by virtue of slight compression of the resilient support means. In use the side walls will conveniently be either parallel or at right angles to the line of motion of the web. If desired the channel member may be provided with two more side walls each of which may be provided with inturned parts along the remaining two opposed edges of the base memher. When the web support is disposed so that its marginal portions are pressed against the underside of the inwardly turned parts of all four side walls the ingress of extraneous matter into the vicinity of the resilient support means is reduced or prevented.
Using our web support the web is passed continuously between the support and the applicator device, such as a doctor knife, which retains a bank of the coating composition on the web and applies a depth of coating on the web approximately equal to the clearance maintained between the web and the applicator.
During the coating operation the resilient support means permits temporary displacement of the web support necessitated by fluctuations in fabric thickness and transit speed.
Our web support may equally well be used with any of the usual web materials for example fabric, paper, sheet metal, metal or glass fibre mesh, supported or unsupported plastic sheet material. It is further readily suited, at least in one of its embodiments, to any of the usual coating compositions used.
One embodiment of our invention will now be described with reference to the accompanying drawings in which:
FIGURE 1 shows a side elevation view of one web support mounted in a suitable housing;
FIGURE 2 shows a plan view of the web support and housing shown in FIGURE 1; and
FIGURE 3 shows a section along line AA of FIG- URE 1.
The web support consists of a flat sheet member 1, one surface of which is in contact with the upper of two superimposed layers of a foam material denoted, respectively, by numerals 2 and 3. The web support is housed in a channel section member comprising a base member 4 and side walls 5 extending along opposite edges of the base member. The upper parts of the walls are inturned as at 6 to overlap and be in abutment with marginal portions of the sheet member so causing slight compression of the foam layers. The channel member is further provided with struts 7 which serve as means for mounting the device in position in preparation for a coating operation.
During a coating operation a web (not shown) is passed continuously under an applicator device ('also not shown) such as a doctor knife or rotating roller, which serves to maintain a bank of coating composition on the web and applies a coating on to the web. As the web passes under the applicator device it is maintained in contact with the free surface of the sheet member which is in a horizontal plane. The sheet material is subjected to vertical forces during the coating operation, especially when faulty or uneven webs are being coated, these forces 7 g 3 being absorbed by compression of the layers of foam material.
In a typical web support for use in the application of polyvinyl chloride coating compositions on to fabrics having a width of approximately 50 inches, the sheet member was a sheet of spring steel having the dimensions 0.012 inch x 6 inches long x 5 ft. 3 inches wide. Also each of the foam layers was a sheet of polyurethane foam having the dimensions 0.5 inch thick x 6 inches long x 5 feet 3 inches wide. The channel member was made from 16 S.W.G. mild steel sheet. It will be realised that if the fabric used is caused to pass centrally over the sheet member then the fabric (having a width of approximately 50 inches) will be bounded by marginal exposed portions of the sheet member (this having a width of 5 ft. 3 inches).
Iclaim:
In a coating apparatus, means supporting a traveling Web to be coated; said means comprising a fixed support mounting a rectangular channel member; at least one resilient foam pad carried by and Within the channel section of said member; a flexible metallic sheet overlying said pad and adapted to support the web being coated; said sheet being impervious to and resistant to reaction with the coating material; an inturned portions formed by the channel member side walls whereby to retain the pad and sheet in assembled relationship within said channel member.
References Cited UNITED STATES PATENTS 690,241 12/1901 Day 16l-40l X 824,781 7/ 1906 Fiicke 66 1,061,126 5/1913 Riley 101-407 1,131,904- 3/1915 Buckie 101407 2,285,763 6/1942 Vasel l61-40'1 X 2,405,598 8/1946 Miller 83659 X 2,587,220 2/ 1952 Ribando 28 1-15 2,616,198 11/1952 Sewell 353 8 2,752,280 6/ 1956 Cooke et a1. 2,819,032 1/1958 Detrie et al. 2,875,435 2/ 1959 McMillan. 3,284,962 11/1966 Hott et a1. 269-310 X FOREIGN PATENTS 741,044 11/ 1955 Great Britain.
MORRIS KAPLAN, Primary Examiner.
US561577A 1965-06-29 1966-06-29 Web support Expired - Lifetime US3344774A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27490/65A GB1156202A (en) 1965-06-29 1965-06-29 Web Support

Publications (1)

Publication Number Publication Date
US3344774A true US3344774A (en) 1967-10-03

Family

ID=10260449

Family Applications (1)

Application Number Title Priority Date Filing Date
US561577A Expired - Lifetime US3344774A (en) 1965-06-29 1966-06-29 Web support

Country Status (3)

Country Link
US (1) US3344774A (en)
GB (1) GB1156202A (en)
NL (1) NL6609077A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839830A (en) * 1973-04-27 1974-10-08 Fox Grinders Inc Anti-vibration work rest for grinders

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US690241A (en) * 1901-05-01 1901-12-31 Benjamin Day Pad for supporting printing-films.
US824781A (en) * 1905-12-26 1906-07-03 Charles Fricke Blackboard.
US1061126A (en) * 1912-05-24 1913-05-06 Progress Mfg Company Universal counter.
US1131904A (en) * 1910-02-21 1915-03-16 John F Buckie Noiseless stamping-pad.
US2285763A (en) * 1939-12-16 1942-06-09 Gustav A Vasel Printer's blanket
US2405598A (en) * 1944-06-23 1946-08-13 Elliott Bay Mill Co Resiliently supported shear block
US2587220A (en) * 1948-04-13 1952-02-26 Andrew A Ribaudo Telephone memorandum device or holder
US2616198A (en) * 1949-06-23 1952-11-04 Harry P Sewell Method and apparatus for forming raised characters and lines
GB741044A (en) * 1950-10-18 1955-11-23 Guido Trebitsch Improvements relating to cutting and punching machines
US2752280A (en) * 1953-02-02 1956-06-26 Crown Cork & Seal Co Printer's blanket and method of making same
US2819032A (en) * 1953-10-20 1958-01-07 Douglas Aircraft Co Inc Aircraft fuselage having panel damping material
US2875435A (en) * 1953-08-18 1959-02-24 Edward B Mcmillan Electromagnetic wave absorbing dielectric walls
US3284962A (en) * 1963-11-15 1966-11-15 North American Aviation Inc Holding tool

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US690241A (en) * 1901-05-01 1901-12-31 Benjamin Day Pad for supporting printing-films.
US824781A (en) * 1905-12-26 1906-07-03 Charles Fricke Blackboard.
US1131904A (en) * 1910-02-21 1915-03-16 John F Buckie Noiseless stamping-pad.
US1061126A (en) * 1912-05-24 1913-05-06 Progress Mfg Company Universal counter.
US2285763A (en) * 1939-12-16 1942-06-09 Gustav A Vasel Printer's blanket
US2405598A (en) * 1944-06-23 1946-08-13 Elliott Bay Mill Co Resiliently supported shear block
US2587220A (en) * 1948-04-13 1952-02-26 Andrew A Ribaudo Telephone memorandum device or holder
US2616198A (en) * 1949-06-23 1952-11-04 Harry P Sewell Method and apparatus for forming raised characters and lines
GB741044A (en) * 1950-10-18 1955-11-23 Guido Trebitsch Improvements relating to cutting and punching machines
US2752280A (en) * 1953-02-02 1956-06-26 Crown Cork & Seal Co Printer's blanket and method of making same
US2875435A (en) * 1953-08-18 1959-02-24 Edward B Mcmillan Electromagnetic wave absorbing dielectric walls
US2819032A (en) * 1953-10-20 1958-01-07 Douglas Aircraft Co Inc Aircraft fuselage having panel damping material
US3284962A (en) * 1963-11-15 1966-11-15 North American Aviation Inc Holding tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839830A (en) * 1973-04-27 1974-10-08 Fox Grinders Inc Anti-vibration work rest for grinders

Also Published As

Publication number Publication date
DE1577801A1 (en) 1971-07-15
GB1156202A (en) 1969-06-25
NL6609077A (en) 1966-12-30

Similar Documents

Publication Publication Date Title
KR830007930A (en) Apparatus and method for treating woven fabrics with foam
AT347233B (en) HYDROSTATIC SUPPORT DEVICE FOR DEFLECTION COMPENSATING ROLLERS FOR PRESSURE TREATMENT OF MATERIAL WEB, IN PARTICULAR PAPER WEB
ATA525276A (en) DEFLECTION ADJUSTMENT ROLLER FOR PRESSURE TREATMENT OF MATERIAL WEB, IN PARTICULAR PAPER WEB
KR950011097A (en) Porous Film Manufacturing Equipment
ES8308249A1 (en) Slitter apparatus.
US3344774A (en) Web support
ES389677A1 (en) Squeezing roll
GB1273245A (en) Device for the welding of plastics materials
NL7712122A (en) SHEET MATERIAL WITH FLAT SURFACE.
ES440301A1 (en) Non-woven structures
ES412521A1 (en) Method of coating paper or other sheet material with surface layers of different coating compositions
ES238895U (en) Partition arrangement
BE902983A (en) DEVICE FOR GUIDING THE PAPER STRIP OF A TWO-CANVAS MANUFACTURING TABLE OF A PAPER OR CARDBOARD MACHINE.
ES463670A1 (en) Apparatus for applying liquid to sheetlike material
SE312484B (en)
FR2128252A1 (en) Paper making machine - has guides bordering filtration screen to limit the width of the web
US2491090A (en) Printing plate
GB1042112A (en) Improvements in or relating to a formainous plastics seat member
ES170502U (en) A razor blade (Machine-translation by Google Translate, not legally binding)
ES348131A1 (en) A Method and Arrangement for Coating a Paper Web or Other Sheet-Like Material
GB291031A (en) Improved method and apparatus for coating paper, fabrics and the like
GB1058833A (en) Improvements relating to the laminating of sheet materials
ES444022A3 (en) Perfect procedure for the obtaining of a laminar material for wall and sheet covering obtained. (Machine-translation by Google Translate, not legally binding)
KR880005892A (en) Device for flipping flexible sheet
ES223997U (en) Cover (Machine-translation by Google Translate, not legally binding)