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US 6,887,334 B2Granted
Thin film lamination-delamination process for fluoropolymers
AssigneeHoneywell International Inc.
InventorsMichael J. Cherpinsky, Jeffrey D. Moulton, Yuan-Ping Robert Ting
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Abstract
A process for forming thin film laminations of thin fluoropolymer films to receiver sheets, more particularly, the production of very thin, transferable fluoropolymer films. A thin fluoropolymer base layer is applied onto a support layer, which may be a thicker film. The support layer/thin base layer is then laminated to a receiver sheet, followed by stripping away the support layer, leaving the base film on the receiver sheet.
Claims34
A thin film lamination-delamination process comprising the steps of:
- a) providing a support layer having first and second surfaces;
- b) applying at least one thin polychlorotrifluoroethylene base layer, having first and second surfaces, onto at least one surface of said support layer, with said first surface of said at least one base layer overlying a surface of said support layer, wherein said base layer has a thickness of from about 0.04 mil (1 μm) to about 0.4 mil (10.2 μm);
- c) applying an adhesive layer onto said second surface of said base layer;
- d) attaching the base layer to a receiver sheet via said adhesive layer, wherein the bond strength between said base layer and said receiver sheet is at least about 2 times the interlayer bond strength between said base layer and said support layer;
- and
- e) separating said support layer from said base layer, such that said base layer remains attached to said receiver sheet.
3 more elements
A thin film lamination-delamination process comprising the steps of:
- a) providing a support layer having first and second surfaces;
- b) applying at least one thin polychlorotrifluoroethylene base layer, having first and second surfaces, onto at least one surface of said support layer, with said first surface of said at least one base layer overlying a surface of said support layer, wherein said base layer has a thickness of from about 0.04 mil (1 μm) to about 0.4 mil (10.2 μm);
- c) applying an adhesive layer onto said second surface of said base layer;
- d) orienting said base layer and said support layer at a draw ratio of at least 1.5:1 in at least one direction;
- e) attaching said oriented base layer to a receiver sheet via said adhesive layer, wherein the bond strength between said base layer and said receiver sheet is at least about 2 times the interlayer bond strength between said base layer and said support layer;
- and
- f) separating said support layer from said base layer, such that said base layer remains attached to said receiver sheet.
4 more elements
A thin film lamination-delamination process comprising the steps of:
- a) providing a support layer comprising a polyolefin and having first and second surfaces;
- b) applying at least one thin polychlorotrifluoroethylene base layer, having first and second surfaces, onto at least one surface of said support layer, with said first surface of said at least one base layer overlying a surface of said support layer, said base layer having a thickness of from about 0.04 mil (1 μm) to about 0.4 mil (10.2 μm);
- c) applying an adhesive layer onto said second surface of said base layer;
- d) attaching the base layer to a polyvinyl chloride receiver sheet via said adhesive layer, wherein the bond strength between said base layer and said receiver sheet is at least about 2 times the interlayer bond strength between said base layer and said support layer;
- and
- e) separating said support layer from said base layer, such that said base layer remains attached to said receiver sheet.
3 more elements
A multilayered film comprising:
- a) a support layer having first and second surfaces;
- b) at least one thin polychlorotrifluoroethylene base layer having first and second surfaces on at least one surface of said support layer, with the first surface of said at least one base layer overlying a surface of said support layer;
- wherein said base layer has a thickness of from about 0.04 mil (1 μm) to about 0.4 mil (10.2 μm);
- c) an adhesive layer on the second surface of said base layer;
- and
- d) a receiver sheet attached to said base layer such that said adhesive layer is in contact with said receiver sheet, wherein the bond strength between said base layer and said receiver sheet is at least about 2 times the interlayer bond strength between said base layer and said support layer.
3 more elements
A multilayered film comprising:
- a) a polyolefin support layer having first and second surfaces;
- b) at least one thin polychlorotrifluoroethylene base layer having first and second surfaces on at least one surface of said support layer, with the first state of said at least one base layer overlying a surface of said support layer;
- wherein said base layer has a thickness of from about 0.04 mil (1 μm) to about 0.4 mil (10.2 μm);
- c) an adhesive layer on the second surface of said base layer;
- and
- d) a polyvinyl chloride receiver sheet attached to said base layer such that said adhesive layer is in contact with said receiver sheet, wherein the bond strength between said base layer and said receiver sheet is greater than about 200 g/inch (79 g/cm) and the interlayer bond strength between said base layer and said support layer is less than about 90 g/inch (35 g/cm).
3 more elements
Dependencies are inferred from the claim text.