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Microporous polypropylene sheets containing CaCO3 filler: Effects of stretching ratio and removing CaCO3 filler

✍ Scribed by Satoshi Nagō; Yukio Mizutani

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
745 KB
Volume
68
Category
Article
ISSN
0021-8995

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✦ Synopsis

Microporous polypropylene sheets are prepared by biaxially stretching polypropylene sheets containing CaCO 3 filler. Here, the stretching ratio is one of the most important factors in the preparative process, and removing the CaCO 3 filler also affects the sheet properties. Their effects were studied in relation to the properties and the structure of the microporous polypropylene sheets.

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Microporous polypropylene sheets were prepared as follows. First, polypropylene pelletcontaining CaC03 filler was extruded to prepare base sheets, which were then biaxially stretched. The draft effect at the extrusion process was studied in relation to some properties of the resultant microporous po

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Microporous polypropylene fibers were prepared by stretching polypropylene fibers containing CaC0, filler. The properties of the resultant fibers are controllable by adjusting the filler content and the stretching ratio. Also, it is elucidated that the fibers have a fine texture of polypropylene fib