Method and apparatus for producing a surface-structured, film semi-finished product with the application of pressure
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United States of America Patent
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Jan 28, 2003
Grant Date -
N/A
app pub date -
Apr 25, 2001
filing date -
Sep 21, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus are disclosed for producing a surface-structured, film semi-finished product made of a thermoplastic which is applied onto a prepared surface with numerous fine cavities provided in the form of pocket borings and is correspondingly shaped. The solidified plastic material is removed from the surface as a structured film, whereby the thermoplastic material which is inserted into the cavities and removed from the same forms a pile comprised of projections and naps. The projections which form the pile are stretch by combing, brushing, using a squeegee, and/or by squeezing by shearing in order to form naps.
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