Styrenic resin molding and process for producing same

Details Styrenic resin molding and process for producing same Styrenic resin molding and process for producing same

B - Operations, Transporting

29

C

B29C 71/02 (2006.01) B29C 51/00 (2006.01) B29C 55/00 (2006.01) C08J 5/00 (2006.01)

Patent

CA 2075542

ABSTRACT OF THE DISCLOSURE There are disclosed a styrenic resin molding having a high crystallinity and excellent in heat resistance, solvent resistance and transparency, and a process for producing the same. Specifically the present invention provides an orientable or thermoformable non-oriented styrenic resin molding having a crystallinity of 25% or more, a spherulite radius of 10 µm or less and a haze of 5% or less and comprising a styrenic polymer having a high degree of syndiotactic configuration; a process for producing the above non-oriented molding; a transparent styrenic-resin molding having a crystallinity of 30% or more which is obtained by thermoforming or orienting the above non-oriented molding at an expansion ratio by area of 1.2 or more; and the process for producing the same. The styrenic resin molding of the present invention can be effectively utilized as heat-resisting transparent sheet, medical treatment container, microwave- range container, food package container such as hot packing container, oven container, retort container, etc., and heat- resisting transparent container such as heat-resisting bottle.

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