HOLLOW STRUCTURES FROM THERMOPLASTICS

摘要

In a method for forming a hollow thermoplastic structure on the exterior surface of a heated mold form 10 the mold form 10 is heated to at least melting temperature of a thermoplastic material and particulate thermoplastic material is then sprinkled onto the exterior surface of the mold form 10 as it rotates. An adhesively bondable material may then be added to the semi-molten thermoplastic material structure. The form 10 is then cooled and the resulting thermoplastic structure removed from the mold form. The thermoplastic dispensing means comprises a vibratable reservoir 44 having a gated aperture 48 through which the material falls onto a dispensing cylinder 51.