B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 49/04 (2006.01) B29C 49/08 (2006.01) B29C 49/22 (2006.01) B29C 55/02 (2006.01) B29C 55/12 (2006.01) B32B 15/08 (2006.01) B32B 27/08 (2006.01) B32B 27/34 (2006.01) C08J 5/18 (2006.01) B29C 35/02 (2006.01)
Patent
CA 2081536
An oriented film easy to split which contains nvlon (Ny) and meta-xylene adipamide (MXD6) at the weight ratio of 40-85:15-60 and which were oriented with magnification above 2.8 times to both direction of MD and TD. The concrete example of nylon (Ny) composes of as nylon 66 (Ny66), nylon 6-66 copolymer (Ny6-66) and so on. Under this manufacturing method of oriented film easy to split, when a raw film is heated in the biaxially orienting process based on the tubular method, heating temperature of side part to direction of width when folding bubbles is controlled along the circumference direction of bubbles so as to be lower than the heating temperature of part which is used later as a product. The process to give heat treatment to films has a process of first step heat treatment implemented for films at temperature between 120 degrees and 190 degrees based on tubular method or Tenter method and a process of second step heat treatment implemented for films at temperature between 190 degrees and 220 degrees based on Tenter method.
Hayashi Takeo
Iwamoto Takehiro
Takashige Masao
Utsuki Katsumi
Idemitsu Kosan Co. Ltd.
Kirby Eades Gale Baker
LandOfFree
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