发明名称 |
METHOD FOR MANUFACTURE OF CAST FLUOROPOLYMER-CONTAINING FILMS AT HIGH PRODUCTIVITY |
摘要 |
<p>A method is provided for preparation of a fluorpolymeric film on a carrier, comprising: (a) preparing an aqueous dispersion comprising a halopolymer, e.g., a fluoropolymer; (b) coatings the carrier belt with the dispersion; (c) moving the coated carrier belt through a metering zone to remove excess dispersion; (d) drying the metered coated carrier to remove the water from the dispersion; (e) heating the dried coated carrier belt to a temperature sufficient to at least substantially eliminate surfactants in the dispersion; (f) further heating the carrier belt to a temperature to melt or to soften the halopolymer; (g) cooling the polymer-coated carrier belt to consolidate the coated polymers; and (h) stripping the consolidated halopolymeric film from the carrier belt. The carrier belt has a low thermal mass with chemical and dimensional stability at the melting or softening temperature of the halopolymer, is uniformly wettable by the first dispersion applied, and exhibits a work of adhesion to the consolidated polymer coating that does not exceed the peel strength of the consolidated polymeric film.</p> |
申请公布号 |
EP0353993(A3) |
申请公布日期 |
1991.11.13 |
申请号 |
EP19890307806 |
申请日期 |
1989.08.01 |
申请人 |
CHEMICAL FABRICS CORPORATION |
发明人 |
EFFENBERGER, JOHN A.;KOERBER, KEITH G.;LATORRA, MICHAEL N.;PETRIELLO, JOHN V. |
分类号 |
B29C41/14;B29C41/12;B29C41/24;B29C41/28;B29C41/46;B29K27/18;B29L9/00;B32B27/30;(IPC1-7):B29C41/28 |
主分类号 |
B29C41/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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