Craze resistant transparent sheet

Details Craze resistant transparent sheet Craze resistant transparent sheet

1994-08-01

1996-08-27

Nold, Charles

Stock material or miscellaneous articles

Hollow or container type article

428480, 526 79, 526309, B29C 3914

Patent

active

055499414

ABSTRACT:
A melt calendered sheet and a process for making melt calendered sheet having excellent transparency and solvent craze resistance. Clear melt calendered sheet having a critical stress rating above 12,000 KPa, heat distortion temperature above 85.degree. C., and flexural modulus above 3,275 MPa is produced from acrylic copolymer having a melt flow rate of from about 0.3 to about 1.3 grams/10 minutes.

REFERENCES:
patent: 3793402 (1974-02-01), Owens
patent: 4175176 (1979-11-01), Ozawa et al.
patent: 4246382 (1981-01-01), Honda et al.
European Search Report dated Jun. 15, 1995.
GB Abstract "Thermoformable Acrylic Sheet".

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