US 4,398,982 AGranted

Spliced web and method for forming a splice

AssigneeEastman Kodak Company

InventorsPeter C. Witerski, Charles W. Pierson

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Abstract

A spliced web and method for splicing web end portions together for minimizing splice-induced disturbance of a liquid composition continuously coated onto the face side of the spliced web during a coating operation. Splicing strips are applied overlying the face and opposite sides of the web end portions to form a sandwich, and the sandwich is subjected to heat and pressure. The splicing strip on the face side fuses with and impregnates the web end portions and forms slight trailing and leading ramp surfaces of gradually decreasing thickness which blend smoothly with the face side of the web for minimizing coating disturbances. The other splicing strip contains fibers which are embedded into or adhere to the opposite side of the web end portions to provide tensile strength to the spliced web.

Claims10

Dependent claims

A method of forming a splice in a resin coated paper web to provide a spliced web having a face side that is capable of being continuously coated with a liquid coating composition with reduced splice-induced disturbance of the coating operation, said paper web further having at least the side opposite the face side coated with resin, said method comprising the steps of:

positioning first and second resin coated paper web portions in abutting end-to-end relationship in which the resin is meltable at a predetermined temperature between about 90.degree. C. to 115.degree. C.;
applying a first splicing strip of a material meltable at said predetermined temperature in overlying relationship with the abutting ends of the face side of the first and second resin coated paper web portions;
applying a second splicing strip of a material containing fibers meltable at a higher temperature than said predetermined temperature in overlying relationship with the opposite side of the first and second resin coated paper web portions;
and
subjecting the first and second resin coated paper web portions and overlying first and second splicing strips to a temperature between said predetermined and higher temperatures and to a predetermined pressure to splice the web portions together by melting the first splicing strip for filling the space between the abutting first and second resin coated paper web portions and partially impregnating said web portions, forming slight trailing and leading ramp surfaces of gradually decreasing thickness on the face side of the web portions which blend smoothly with the face side, and melting said resin and embedding the fibers of said second splicing strip into said melted resin on the opposite side of the resin coated paper web portions.

2 more elements

A method of forming a splice in a paper web to provide a spliced paper web having a face side that is capable of being continuously coated with a liquid coating composition with reduced splice-induced disturbance of the coating operation, said method comprising the steps of:

positioning first and second paper web portions in abutting end-to-end relationship;
applying a first splicing strip of a material meltable at a predetermined temperature between about 90.degree. C. to 115.degree. C. in overlying relationship with the abutting ends of the face side of the first and second paper web portions;
applying a second splicing strip of a material containing fibers meltable at a higher temperature than said predetermined temperature in overlying relationship with the side of the adjacent ends of the first and second paper web portions opposite the face side;
positioning a third splicing strip of material meltable at substantially said predetermined temperature in register with one side of said second splicing strip;
and
subjecting the first and second paper web portions and overlying first, second and third splicing strips to a temperature between said predetermined and higher temperatures and a predetermined pressure to splice the web portions together by melting the first splicing strip for filling the space between the abutting first and second paper web portions and partially impregnating said web portions, forming slight trailing and leading ramp surfaces of gradually decreasing thickness on the face side of the paper web portions which blend smoothly with the face side, embedding the fibers of said second splicing strip into the opposite side of the paper web portions, and melting the third splicing strip for adhering the fibers to the paper web portions.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/326,791Filed 2 Dec 1981
Granted: 16 Aug 1983
Term ends: Not estimatedThe source records don’t support an estimate.

Classification29 codes

G03C 1/74
Photosensitive materials: applying photosensitive compositions to the base; Drying processes therefor
B05C 9/02
Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means…
B29C 65/224
Characterised by the type of heated wire, resistive ribbon, band or strip: being a resistive ribbon, a resistive band or a resistive strip
B29C 65/4815
Non-reactive adhesives, e.g. physically hardening adhesives: hot melt adhesives, e.g. thermoplastic adhesives

Family

No related US applications are recorded in the indexed filing history.

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