EP0524155A2
Expired / Lapsed
EP
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Industrial procedure for the application of a P.T.F.E. film on aluminium surfaces
Assignee: Alluflon SpA
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Filing: 1992-05-28
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Granted: —
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Expires: 2012-05-28
Abstract
Abstract This invention concerns an industrial procedure for the application of a polytetrafluoroethylene film on aluminium surfaces by means of mechanical-chemical bonding using a specific compound which, on one hand can adhere to a smooth aluminium surface and, on the other, being suitable for producing mechanical-chemical bonding with the P.T.F.E.
Inventors
- 👤 Michele Montagna
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 18:29
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/50; B05D7/56; B05D7/58; B05D5/00; B05D5/08; B05D5/083; B05D7/14; B05D7/16; B05D2202/00; B05D2202/20; B05D2202/25; B05D2505/00; B05D2506/00; B05D2506/10; B05D2506/15
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
140 words
1) An industrial procedure for the application of P.T.F.E. film on aluminium surfaces consisting of the following sequence of production phases: a) degreasing with sodium hydroxide in an aqueous solution; b) washing with water; c) an optional rapid bath (10-12 seconds) in a hydrochloric acid solution followed by rinsing in water; d) drying; e) a rolling process through a set of four rolling machines in which: I) the mixture used in the first rolling machine consists of: II) the mixture used in the second rolling machine consists of: III) the mixture used in the third and four rolling machines is a standard aqueous solution of P.T.F.E. and colouring pigments; whereby the above product (P) consists of: whereby the thickening solution in the mixture used in the first and second rolling machines consists of the following components in the following percentages:
Claim 2
Dependent Claim
140 words
1) An industrial procedure for the application of P.T.F.E. film on aluminium surfaces consisting of the following sequence of production phases: a) degreasing with sodium hydroxide in an aqueous solution; b) washing with water; c) an optional rapid bath (10-12 seconds) in a hydrochloric acid solution followed by rinsing in water; d) drying; e) a rolling process through a set of four rolling machines in which: I) the mixture used in the first rolling machine consists of: II) the mixture used in the second rolling machine consists of: III) the mixture used in the third and four rolling machines is a standard aqueous solution of P.T.F.E. and colouring pigments; whereby the above product (P) consists of: whereby the thickening solution in the mixture used in the first and second rolling machines consists of the following components in the following percentages:
Claim 3
Dependent Claim
59 words
2) An industrial procedure for the application of P.T.F.E. film on aluminium surfaces according to claim 1) characterized in that in product (P) the mixture percentage of the component (A) with respect to component (B) may vary by plus or minus 5%, as may the mixture percentage of the component (C) with respect to the sum of components (A+B).
Claim 4
Dependent Claim
64 words
3) An industrial procedure for the application of P.T.F.E. film on aluminium surfaces according to claim 1) characterized in that in the mixture used in the first rolling machine the composition of the product (P) with respect to the thickening solution may vary by plus or minus 0.5% and that the percentage of pigments in the thickening solution may vary from 8% - 12%.
Claim 5
Dependent Claim
68 words
4) An industrial procedure for the application of P.T.F.E. film on aluminium surfaces according to claim 1) characterized in that in the mixture used in the second rolling machine the composition of the product (P) with respect to the sum of the other two components may vary by plus or minus 5% and that the percentage of pigments in the thickening solution may vary from 8% - 12%.
References Cited (Backward Citations)
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