Infusion in-mould helmet

Abstract

A infusion in-mould helmet is disclosed. One side of a plastic sheet that is not resistant to high temperatures is attached with a protective tape that can withstand high temperatures, followed by printing, plastic removal, edge cutting, and hole drilling, to form an outer helmet. The outer helmet and a pre-formed inner helmet are disposed together in a molding machine to render an integrally formed sports helmet at lower pressure, lower temperature, and shorter time.

1 . An infusion in-mould helmet comprising an outer helmet formed by attaching a more heat-resistant protective tape onto one surface of a less heat-resistant plastic plate, followed by printing, plastic removal, edge cutting, and hole drilling, wherein the outer helmet and a pre-formed inner helmet are disposed together in a molding machine to integrally form the in-mould helmet at lower pressure, lower temperature, and shorter time. 
   
   
       2 . The infusion in-mould helmet of  claim 1 , wherein the material of the outer helmet is PVC. 
   
   
       3 . The infusion in-mould helmet of  claim 1 , wherein the material of the outer helmet is PET. 
   
   
       4 . The infusion in-mould helmet of  claim 1 , wherein the material of the outer helmet is PETG. 
   
   
       5 . The infusion in-mould helmet of  claim 1 , wherein the material of the inner helmet is expanded polystyrene (EPS). 
   
   
       6 . The infusion in-mould helmet of  claim 1 , wherein the pressure for infusion is not more than 0.7±0.1 bar. 
   
   
       7 . The infusion in-mould helmet of  claim 1 , wherein the temperature for infusion is not more than 110±2° C. 
   
   
       8 . The infusion in-mould helmet of  claim 1 , wherein the time for cold fusion is not more than 168±5 sec.