PROCESS FOR BONDING PREHEATED THERMOPLASTIC FILM TO A DISSIMILAR SUBSTRATE

• US 3,660,200 A
• Filed: 07/09/1969
• Issued: 05/02/1972
• Est. Priority Date: 07/09/1969
• Status: Expired due to Term

• Current Assignee: Augustus W. Bachman Jr, Robert E. Anderson
• Original Assignee: Augustus W. Bachman Jr, Robert E. Anderson
• Inventors: Anderson, Robert E., Bachman, Augustus W. Jr.
• Primary Examiner(s): Quarforth, Carl D.
• Assistant Examiner(s): Nelson, P. A.
• Application Number:
  US04/845,650
• Time in Patent Office: 1,028 Days
• Field of Search: 156/79,82,151-154,160,202,306,322,163,327
• US Class Current: 156/278
• CPC Class Codes: B32B 2038/002 Sandblasting
• CPC Class Codes: B32B 2038/0092 Metallizing
• CPC Class Codes: B32B 2305/18 Fabrics, textiles
• CPC Class Codes: B32B 2309/12 Pressure
• CPC Class Codes: B32B 2311/00 Metals, their alloys or their compounds
• CPC Class Codes: B32B 2317/12 Paper, e.g. cardboard
• CPC Class Codes: B32B 2323/043 HDPE, i.e. high density polyethylene
• CPC Class Codes: B32B 2323/046 LDPE, i.e. low density polyethylene
• CPC Class Codes: B32B 2398/20 Thermoplastics
• CPC Class Codes: B32B 27/00 Layered products comprising a layer of synthetic resin fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18
• CPC Class Codes: B32B 27/10 of paper or cardboard
• CPC Class Codes: B32B 27/304 comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 37/0053 Constructional details of laminating machines comprising rollers; Constructional features of the rollers
• CPC Class Codes: B32B 37/20 involving the assembly of continuous webs only
• CPC Class Codes: B32B 38/06 Embossing
• CPC Class Codes: B32B 38/145 Printing
• CPC Class Codes: D06M 17/06 Polymers of vinyl compounds
• CPC Class Codes: D06Q 1/00 Decorating textiles

Abstract

The present process relates to a method and an apparatus for continuously thermally bonding layers of materials together so as to form a laminate from a composite which includes at least one layer of thermoplastic film and at least one layer of substrate. In particular, the present invention is of value for bonding together multiple layers of thermoplastic film and substrate to which have been imparted various decorative and utilitarian effects.

Claims

2. The method of claim 1 wherein:

A. the film is low density polyethylene, B. the nip rolls are maintained at a temperature of from about 210* F. to about 275* F., C. the substrate is kraft paper, and D. substantially just prior to passing through said nip section the paper is heated to a temperature of from about 250* F. to about 300* F.

3. The method of claim 1 wherein said laminate is next heated to a temperature of from about 150* F. to about 500* F. whereby gloss of the film is enhanced and bonding of the substrate to the film is improved.

4. The method of claim 1 wherein the uncooled surface of at least one layer of the composite is metal coated by vapor plating or solution plating.

5. The method of claim 1 wherein the uncooled surface of at least one layer of thermoplastic film is flock coated.

6. The method of claim 1 wherein:

A. the film is medium density polyethylene, B. the nip rolls are maintained at a temperature of from about 275* F. to about 325* F., and C. the substrate substantially just prior to passing through said nip section is at a temperature of from about 300* F. to about 350* F.

7. The method of claim 1 wherein:

A. the film is high density polyethylene, B. The nip rolls are maintained at a temperature of from about 325* F. to about 375* F., and C. the substrate substantially just prior to passing through said nip section is at a temperature of from about 350* F. to about 400* F.

8. The method of claim 1 wherein:

A. the film is nitrocellulose coated polypropylene, B. the nip rolls are maintained at a temperature of from about 250* F. to about 300* F., and C. the substrate substantially just prior to passing through said nip section is at a temperature of from about 275* F. to about 300* F.

9. The method of claim 1 wherein:

A. the film is polypropylene, B. the nip rolls are maintained at a temperature of from about 300* F. to about 400* F., and C. the substrate substantially just prior to passing through said nip section is at a temperature of from about 325* F. to about 425* F.

10. The method of claim 1 wherein:

A. the film is polyvinylidene chloride, B. the nip rolls are maintained at a temperature of from about 320* F. to about 350* F., and C. the substrate substantially just prior to passing through said nip section is at a temperature of from about 340* F. to about 375* F.

11. The method of claim 1 wherein:

A. the film is polyvinyl chloride, B. the nip rolls are maintained at a temperature of from about 325* F. to about 375* F., and C. the substrate substantially just prior to passing through said nip section is at a temperature of from about 350* F. to about 400* F.