Title:
STRETCH MATERIAL
Document Type and Number:
WIPO Patent Application WO/2012/086725
Kind Code:
A1
Abstract:
Disclosed is a material capable of forming a polytetrafluoroethylene porous film which can readily be stretched biaxially, is capable of uniform stretching even at high stretching ratios, and has low pressure loss. The disclosed stretch material contains (A) a polytetrafluoroethylene having fibrillating properties and a standard specific gravity (SSG) of 2.130-2.230, and (B) a non-fibrillating, low molecular weight polytetrafluoroethylene having a melt viscosity of 1x102 to 7x105Pa.s at 380°C not irradiated by an electron beam or a radiation beam.
Inventors:
SAWADA YASUHIKO (JP)
KASAI SHUNJI (JP)
YAMANAKA TAKU (JP)
SHIBUYA YOSHIYUKI (JP)
INUI KUNIHIKO (JP)
CHAEN SHINICHI (JP)
KASAI SHUNJI (JP)
YAMANAKA TAKU (JP)
SHIBUYA YOSHIYUKI (JP)
INUI KUNIHIKO (JP)
CHAEN SHINICHI (JP)
Application Number:
PCT/JP2011/079723
Publication Date:
June 28, 2012
Filing Date:
December 21, 2011
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
SAWADA YASUHIKO (JP)
KASAI SHUNJI (JP)
YAMANAKA TAKU (JP)
SHIBUYA YOSHIYUKI (JP)
INUI KUNIHIKO (JP)
CHAEN SHINICHI (JP)
SAWADA YASUHIKO (JP)
KASAI SHUNJI (JP)
YAMANAKA TAKU (JP)
SHIBUYA YOSHIYUKI (JP)
INUI KUNIHIKO (JP)
CHAEN SHINICHI (JP)
International Classes:
C08L27/18; C08J9/00
Foreign References:
| JPH03258532A | 1991-11-18 | |||
| JPH0912902A | 1997-01-14 | |||
| JP2001357729A | 2001-12-26 |
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
Patent business corporation Yasutomi international patent firm (JP)
Patent business corporation Yasutomi international patent firm (JP)
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Claims: