Pattern-bearing sheet for use in simultaneous injection-molding

Details Pattern-bearing sheet for use in simultaneous injection-molding Pattern-bearing sheet for use in simultaneous injection-molding

1994-12-20

1998-12-01

Ahmad, Nasser

Stock material or miscellaneous articles

Structurally defined web or sheet

264 401, 264511, 264513, 428159, 428160, 428172, 428212, B29C 4514, B32B 500

Patent

active

058435557

ABSTRACT:
A pattern-bearing sheet for a simultaneous injection-molding and pattern-forming method, has a sufficient malleability in the following conditions. When the sheet is cut to a 10-mm width and subjected to a tensile load and thus elongated at a rate of 30%/second in an environment at 50.degree. C., the sheet should exhibit a stress value of 0.6 kg or higher at the yield point and after passing through the yield point in the case where the sheet is formed from a material having a yield point, and the sheet should exhibit a stress value of 0.6 kg or higher at an elongation of 10% and higher in the case where the sheet is formed from a material not having a yield point. Desirably, the value when the sheet cut to 10-mm width is elongated at a rate of 7%/second to an elongation of 200% (200% modulus value) at a temperature of 100.degree. C. to 120.degree. C. should be 0.3 kg or lower.

REFERENCES:
patent: 4639341 (1987-01-01), Hanamoto et al.

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