US3531362A - Spliced joint in coated web material and method of forming said joint - Google Patents

Spliced joint in coated web material and method of forming said joint Download PDF

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Publication number
US3531362A
US3531362A US679083A US3531362DA US3531362A US 3531362 A US3531362 A US 3531362A US 679083 A US679083 A US 679083A US 3531362D A US3531362D A US 3531362DA US 3531362 A US3531362 A US 3531362A
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US
United States
Prior art keywords
web
coating
splice
joint
tape
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
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US679083A
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English (en)
Inventor
Richard T Bourns
Lawrence G Mcdonald
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Eastman Kodak Co
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Eastman Kodak Co
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Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
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Publication of US3531362A publication Critical patent/US3531362A/en
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • 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
    • Y10T428/19—Sheets or webs edge spliced or joined
    • Y10T428/192—Sheets or webs coplanar
    • Y10T428/197—Sheets or webs coplanar with noncoplanar reinforcement
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24752—Laterally noncoextensive components
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24777—Edge feature

Definitions

  • a substantially continuous web is coated with a liquid material, such as aqueous solutions or dispersions of hydrophilic colloids, see US. Pats. 2,681,294 and 2,739,891, which may then be dried to form the desired product.
  • a liquid material such as aqueous solutions or dispersions of hydrophilic colloids
  • Such manufacturing processes are used in the manufacture of adhesive tapes, magnetic recording tapes and photographic films and papers, among others.
  • the coating process In order to increase the efficiency, and consequently lower the cost, of manufacturing these products, the coating process generally is carried out in a substantially continuous manner. Inasmuch as the web or support for the coating can only be obtained in finite lengths, a new supply roll of the web must be periodically spliced to the end of the preceding supply roll so that the coating process may continue uninterruptedly.
  • the most desirable way of splicing such webs is to utilize a splice tape extending across the web and joining the two adjacent pieces of the web together. It has also been found that applying the splice tape to the surface being coated provides fewer coating flaws than does the application of the splice tape to the back side of the web. However, even though the application of the splice tape to the coated side of the web results in fewer coating problems than do other methods of splicing, streaks and other defects have still been found in the coating downstream from the splice tape. Normally, the spliced section of the continuous web is cut from the finished product and is scrapped so that the defects in the coating occurring at the splice joint are not found in the final product.
  • the splice joint may affect substantial lengths of the coated web following the splice.
  • this is not possible, and the entire web containing such defects must be scrapped.
  • the present invention provides a method of treating a splice joint in a web to be coated, whereby the splice does not cause coating defects downstream of the spliced joint.
  • the present invention provides a method of continuously coating a moving web with a layer of a substantially liquid material comprising the steps of moving the web past a coating head and depositing a layer of a substantially liquid material on a surface of the web.
  • a splicing member or tape is applied to the surface of the web being coated, with the splicing member forming a discontinuity in the web surface, at least at the downstream edge of the splicing member. Defects in the web coating are substantially reduced by preventing the entrainment of air from the downstream edge of the splice member.
  • the elimination of air entrainment from the downstream edge of the spliced member is provided by coating the downstream edge of the splice membet and the adjacent web surface with an oily hydrophobic coating such as the marking solution from a felt tipped marker.
  • the prevention of entrainment of air from the downstream edge of the spliced member may be provided by feathering the downstream edge of the splice member.
  • the elimination of air entrainment may be provided by coating the downstream edge of the splice member and the adjacent web surface with a coating of rubber cement.
  • FIG. 1 is a greatly enlarged schematic section through a spliced joint of a coated web which may be treated in accordance with the teachings of the present invention.
  • FIG. 2 is a greatly enlarged schematic section through a spliced joint treated in accordance with an alternative method of the present invention.
  • a sectional view through a web splice is illustrated in -FIG. 1, wherein the trailing end of one Web 10 is spliced to the leading end of a succeeding web 12 by a strip of splicing tape 14 which extends across the joint therebetween.
  • the web moves past the coating station in the direction of arrow 16.
  • the layer or coating 18 of a substantially liquid material such as aqueous solutions (which term is also intended to include dispersions) of hydrophilic colloids and, more specifically, a gelatin-silver halide emulsion, is deposited at the coating section. It will be seen that the splice tape 14 creates a discontinuity in the surface of the web at both the leading and the trailing edges.
  • the layer of substantially liquid material generally follows the discontinuous surface at the leading edge of the splice tape.
  • a wedge of air 20 is trapped in the trailing edge of the splice tape and the coated layer does not closely follow the surface of the web at that point, especially at high coating speeds.
  • the wedge of air 20 trapped between the coating material, the surface of the web, and the trailing edge of the splice tape has been found to become entrained in the liquid coating material as the coating material settles to the surface of the web. The entrained air may then be spread over the succeeding downstream portions of the web, causing defects in the coating which may result in rejection of the final product.
  • the trapped air 20 may form small bubbles which adhere to the surface of the coating nozzle and affect the stream of material flowing therethrough. These bubbles may persist for an extended length of time whereby all succeeding coating is affected. As a result, the amount of defective webs may be substantially greater than would be expected due to entrapment of air in the coating alone.
  • FIG. 2 One method of preventing the entrainment of air in the subsequently coated web is illustrated in FIG. 2 (wherein similar reference numbers refer to similar elements) in which the trailing edge of the splice tape 14' is feathered or beveled so that no discontinuity is formed between the trailing edge thereof and the adjacent web surface.
  • FIG. 2 wherein similar reference numbers refer to similar elements
  • Another method of preventing the entrainment of air from the splice joint in the coating is to treat the trailing edge of the splice tape and the adjacent web surface with a filler material such as rubber cement, which performs substantially the same function as the feathered edge of the tape; i.e., filling the transition from the tape to the Web surface to eliminate the wedge of air at the trailing edge of the splice tape.
  • a filler material such as rubber cement
  • one such marking solution carrier has a solvent composed substantially of aromatic hydrocarbons, predominately xylenes, and high flash naphtha. Hence, this treatment prevents the immediate wetting of the trailing edge of the splice and the adjacent web surface by the coating material so that the coating material actually bridges the air wedge without permitting air to be entrained in the coating material or to form bubbles which may adhere to the coating nozzle as may occur when the coating material is immediately attracted to the web surface. More particularly, treatment of the trailing edge of the splice tape and the adjacent web surface with the solution from a Marks-A-Lot felt-tipped marking pen provided extremely satisfactory results.
  • oily-hydrophobic material such as a solution of oil in methyl-ethyl-ketone, also provides very satisfactory results.
  • Another material which has also been successful is a high flash naptha fraction containing a non-volatile fraction of oily material which also renders the web and tape surface non-wettable by the coating material.
  • the web is transversely spliced at spaced longitudinal intervals, resulting in a discontinuity in the surface being coated.
  • the present invention prevents the formation of disturbances in the coating downstream from the spliced discontinuity by preventing entrainment of air in the coating, either by eliminating the Wedge of air at the downstream edge of the splice, or by the application of an oily-hydroprobic material to the splice discontinuity.
  • An additional benefit of the preferred embodiment of the present invention i.e., coating the splice with a marking pen, is the fact that the treated splice is readily apparent due to the color of the marking solution, so that any failure to treat the splice joint is readily apparent.
  • the method of eliminating disturbances in the layer of said aqueous solution downstream from a spliced joint in the web comprising the step of preventing said aqueous solution from entraining air from the spliced joint by coating the web surface immediately downstream from the spliced joint with a hydrophobic oil prior to applying the layer of aqueous solution.
  • substantially hydrophobic oil is the marking solution from a felt-tipped marker.
  • the method of eliminating disturbances in the layer of said aqueous solution downstream from a spliced joint formed with a splicing tape on the web surface to be coated comprising the step of forming a tapered transition from the downstream edge of the splicing tape surface to the web surface.
  • hydrophobic oil consists essentially of a solution of oil in methyl-ethyl-ketone.
  • the method of coating a layer of an aqueous solution of hydrophilic colloids on a moving web comprising the steps of applying a splicing member to the surface of the web to be coated, said splicing member forming a discontinuity in the web surface at least at the downstream edge of said member, applying a hydrophobic oil material to the downstream edge of said member and the web surface adjacent thereto, and then moving the web and the splicing member past a coating head and depositing the layer on the web.
  • a web product having a splicing member applied to one surface of the web, said splicing member forming a discontinuity in the web surface on the downstream edge of the splicing member, said discontinuity and the surface of the web adjacent to and downstream of the discontinuity having a coat of an oily-hydrophobic material, and a coating layer of an aqueous solution of hydrophilic colloids disposed on said one surface of said web and said oily-hydrophobic material.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US679083A 1967-10-30 1967-10-30 Spliced joint in coated web material and method of forming said joint Expired - Lifetime US3531362A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67908367A 1967-10-30 1967-10-30
US77095068A 1968-10-28 1968-10-28

Publications (1)

Publication Number Publication Date
US3531362A true US3531362A (en) 1970-09-29

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ID=27102146

Family Applications (2)

Application Number Title Priority Date Filing Date
US679083A Expired - Lifetime US3531362A (en) 1967-10-30 1967-10-30 Spliced joint in coated web material and method of forming said joint
US770950A Expired - Lifetime US3518141A (en) 1967-10-30 1968-10-28 Method of applying photographic coatings to a moving web with a spliced joint

Family Applications After (1)

Application Number Title Priority Date Filing Date
US770950A Expired - Lifetime US3518141A (en) 1967-10-30 1968-10-28 Method of applying photographic coatings to a moving web with a spliced joint

Country Status (5)

Country Link
US (2) US3531362A (de)
BE (1) BE723048A (de)
DE (1) DE1805734B2 (de)
FR (1) FR1590038A (de)
GB (1) GB1251513A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972762A (en) * 1973-09-03 1976-08-03 Fuji Photo Film Co., Ltd. Coating method
US4024302A (en) * 1973-08-22 1977-05-17 Fuji Photo Film Co., Ltd. Method for coating running webs having projecting splices
US4156054A (en) * 1978-03-09 1979-05-22 Swiss Aluminium Limited Bonded assembly and method for obtaining same
US4172001A (en) * 1978-07-07 1979-10-23 Eastman Kodak Company Spliced web adapted for coating with liquid coating compositions
US4269647A (en) * 1977-10-12 1981-05-26 Agfa-Gevaert N.V. Method for the continuous coating of webs having spliced joints
US6197148B1 (en) 1999-03-31 2001-03-06 Eastman Kodak Company Web material having spliced joints and a method for coating a web material having spliced joints
US20090286025A1 (en) * 2006-04-06 2009-11-19 Jacques Thomasset Thermoplastic tubular packaging body with an embedded strip
US20150313361A1 (en) * 2014-05-02 2015-11-05 North Carolina State University Coated article and method of manufacturing thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916043A (en) * 1971-11-15 1975-10-28 Eastman Kodak Co Method of coating a spliced web
FR2400968A1 (fr) * 1977-08-23 1979-03-23 Agfa Gevaert Procede pour enduire de facon continue des bandes presentant des joints de raccordement
US4150169A (en) * 1977-12-27 1979-04-17 Armstrong Cork Company Method for manufacturing an embossed vinyl surface covering having a clear photopolymerized coating
US6539865B2 (en) * 2001-02-21 2003-04-01 Kodak Polychrome Graphics Llc Method of preparing a lithographic printing plate for imaging in a printer engine
EP1321407A1 (de) * 2001-12-21 2003-06-25 Fuji Photo Film B.V. Verfahren zum Verbinden und zum Beschichten von Bahnen und eine nach diesem Verfahren hergestellte Bahn

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506915A (en) * 1946-11-06 1950-05-09 Fraser Products Company Binding strip joint
US2995784A (en) * 1955-04-14 1961-08-15 Eugene J Driscoll Building construction
US3004694A (en) * 1958-03-19 1961-10-17 Safe Pack Container Co Container structures

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2252539A (en) * 1938-07-13 1941-08-12 Celotex Corp Method of making corner members
US2657151A (en) * 1949-09-23 1953-10-27 Bayer Ag Coating of fabrics

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506915A (en) * 1946-11-06 1950-05-09 Fraser Products Company Binding strip joint
US2995784A (en) * 1955-04-14 1961-08-15 Eugene J Driscoll Building construction
US3004694A (en) * 1958-03-19 1961-10-17 Safe Pack Container Co Container structures

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024302A (en) * 1973-08-22 1977-05-17 Fuji Photo Film Co., Ltd. Method for coating running webs having projecting splices
US3972762A (en) * 1973-09-03 1976-08-03 Fuji Photo Film Co., Ltd. Coating method
US4269647A (en) * 1977-10-12 1981-05-26 Agfa-Gevaert N.V. Method for the continuous coating of webs having spliced joints
US4156054A (en) * 1978-03-09 1979-05-22 Swiss Aluminium Limited Bonded assembly and method for obtaining same
US4172001A (en) * 1978-07-07 1979-10-23 Eastman Kodak Company Spliced web adapted for coating with liquid coating compositions
US6197148B1 (en) 1999-03-31 2001-03-06 Eastman Kodak Company Web material having spliced joints and a method for coating a web material having spliced joints
US6387204B2 (en) * 1999-03-31 2002-05-14 Eastman Kodak Company Web material having spliced joints and a method for coating a web material having spliced joints
US20090286025A1 (en) * 2006-04-06 2009-11-19 Jacques Thomasset Thermoplastic tubular packaging body with an embedded strip
US8916247B2 (en) * 2006-04-06 2014-12-23 Aisapack Holding S.A. Thermoplastic tubular packaging body with an embedded strip
US20150313361A1 (en) * 2014-05-02 2015-11-05 North Carolina State University Coated article and method of manufacturing thereof

Also Published As

Publication number Publication date
DE1805734B2 (de) 1971-04-22
BE723048A (de) 1969-04-01
DE1805734A1 (de) 1969-05-29
FR1590038A (de) 1970-04-06
US3518141A (en) 1970-06-30
GB1251513A (de) 1971-10-27

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