# US 4,398,982 A · Spliced web and method for forming a splice

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- Number: US 4,398,982 A
- Document ID: US4398982A
- Status: Granted
- Kind: A
- Application number: 06/326,791
- Filed: 1981-12-02
- Granted: 1983-08-16
- Earliest claimed: 1981-12-02
- Assignees: Eastman Kodak Company
- Inventors: Peter C. Witerski; Charles W. Pierson
- Web page: https://patentgrep.com/patent/US4398982A

## CPC

- G03C 1/74: Applying photosensitive compositions to the base; Drying processes therefor (G03C1/496 takes precedence)
- B05C 9/02: for applying liquid or other fluent material to surfaces by single means not covered by groups B05C1/00 - B05C7/00, whether or not also using other means
- B29C 65/224: {being a resistive ribbon, a resistive band or a resistive strip}
- B29C 65/4815: {Hot melt adhesives, e.g. thermoplastic adhesives}
- B29C 65/5021: {being multi-layered}
- B29C 65/5028: {being textile in woven or non-woven form}
- B29C 65/5042: {covering both elements to be joined}
- B29C 65/5057: {positioned between the surfaces to be joined (B29C65/5035 takes precedence)}
- B29C 65/5078: {and being composed by several elements}
- B29C 65/5085: {and comprising grooves, e.g. being E-shaped, H-shaped}
- B29C 66/0044: {using a separating sheet, e.g. fixed on the joining tool}
- B29C 66/1142: {Single butt to butt joints}
- B29C 66/43: {Joining a relatively small portion of the surface of said articles (B29C66/45 takes precedence)}
- B29C 66/72328: {Paper}
- B29C 66/8122: {characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps}
- B29C 66/81457: {comprising a block or layer of deformable material, e.g. sponge, foam, rubber (pressing elements supported or backed-up by resilient material B29C66/8161)}
- B29C 66/81811: {of the welding jaws}
- B29C 66/83221: {cooperating reciprocating tools, each tool reciprocating along one axis}
- B29C 66/91231: {of the joining tool}
- B29C 66/91421: {of the joining tools}
- B29C 66/91431: {the temperature being kept constant over time}
- B29C 66/9161: {by controlling or regulating the heat or the thermal flux, i.e. the heat flux}
- B29C 66/71: {characterised by the composition of the plastics material of the parts to be joined (welding bar compositions B29C65/125)}
- B29C 66/961: {involving a feedback loop mechanism, e.g. comparison with a desired value}
- Y10T 428/192: Sheets or webs coplanar
- G03C: PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES (for photomechanical purposes G03F); PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY (photographic processes characterised by the use or manipulation of apparatus classifiable per se in subclass G03B, see G03B; photomechanical production of textured or patterned surfaces G03F; electrophotography, magnetography G03G)
- B05C: APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (spraying apparatus, atomising apparatus, nozzles B05B; plant for applying liquids or other fluent materials to objects by electrostatic spraying B05B5/08)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## 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.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

A method according to claim 1 wherein said first splicing strip is formed from a polyethylene material.

### Claim 3 (depends on 2)

A method according to claim 2 wherein said first splicing strip has a pigment added thereto causing said first splicing strip to match the color and texture of the resin coated paper web.

### Claim 4 (depends on 1, 2)

A method according to claims 1 or 2 wherein said second splicing strip is formed from a polyester material.

### Claim 5

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.

### Claim 6 (depends on 6)

A method according to claim 6 wherein said first and third splicing strips are formed from a polyethylene material.

### Claim 7 (depends on 5)

A method according to claim 5 wherein said first splicing strip has a pigment added thereto causing said first splicing strip to match the color and texture of the paper web.

### Claim 8 (depends on 5)

A method according to claim 5 wherein said second splicing strip is formed from a polyester material.

### Claim 9 (depends on 5)

A method according to claim 5 wherein said third splicing strip comprises a hot melt adhesive.

### Claim 10 (depends on 5)

A method according to claim 5 wherein said first splicing strip is formed from a polyethylene material, said second splicing strip is formed from a polyester material, and said third splicing strip comprises a hot melt adhesive.