Method for manufacturing pressure-resistant container liner...

Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Including application of internal fluid pressure to hollow...

Reexamination Certificate

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C428S036800

Reexamination Certificate

active

07988907

ABSTRACT:
A resin composition formed by blending 10 to 25 weight parts of the epoxy modified polystyrene resin (B) to 100 weight parts of the liquid crystal polyester and/or the liquid crystal polyester amide (A) and by melt-kneading the two materials, wherein the resin composition having a melt viscosity of 60 to 4000 Pa·s at a shear rate of 1000/second at a temperature which is 20° C. higher than the melting point and having a melt tension of 20 mN or more at a take-over speed of 15 m/minute, is melt within a temperature range of a melting point to the melting point +40° C., a parison P is formed by extruding it with an extrusion speed equal to or higher than 0.3 kg/minute and lower than 5 kg/minute, a pair of moldings placed so as to sandwich the parison P are closed at a predetermined mold closing pressure, and air is blown into the parison P.

REFERENCES:
patent: 7648748 (2010-01-01), Nakane et al.
patent: 2005/0260372 (2005-11-01), Matsuoka et al.
patent: 6-238738 (1994-08-01), None
patent: 6-306261 (1994-11-01), None
patent: 6306261 (1994-11-01), None
patent: 2006-43941 (2006-02-01), None
U.S. Appl. No. 11/911,061, filed Oct. 9, 2007, entitled “Method For Manufacturing Pressure-Resistant Container Liner and Liquid Crystal Resin Liner”.

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