Surface protection film fabrication method and fabrication apparatus and surface protection film
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United States of America Patent
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Jun 12, 2018
Issued Date -
N/A
app pub date -
Nov 26, 2012
filing date -
Nov 29, 2011
priority date (Note) -
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Abstract
A method is provided for fabricating a surface protection film that has no rolling defects such as blocking or wrinkling when rolled into a roll, and that, after the film is bonded to an adherend, is rolled into a roll, and stored for long periods of time, does not transfer unevenness or fisheyes on the back surface to the adherend. The surface protection film is fabricated as an elastomer by setting the arithmetical mean roughness (Ra) of the surface of a cold roller (4) to no more than 0.2 μm, and the ten point mean roughness (Rz) of the surface of a nip roller (3) to 2-8 μm and the mean distance (Sm) between protrusions and depressions thereof to no more than 90 μm.
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International Classification(s)
- C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- B29K:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, ....
- B29L:INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RE....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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