Patent ID: 9511531
Filing Date: 2016-12-06
CPC Classification: B29C

Claim Text:
1. A method for forming a thermoplastic article of various colors, patterns, materials and/or components, comprising steps of: a) separately plastic-moulding a first component in a solid state which is perforated or formed with desired colors, patterns, and/or materials, said first component being hollow and having at least one open end and configured to conform in shape to at least a part of a body of the article to be moulded, and heating the solid first component at a required temperature; b) providing two co-operating first mould halves and positioning fixedly the heated first component in one of the two first mould halves or centrally between the two first mould halves; c) heating a moulded pre-blow plastic part having a desired shape and having a wall of a desired thickness and positioning a blow head with the heated moulded pre-blow plastic part, wherein the heated moulded pre-blow plastic part passes through the hollow first component, and closing the first mould halves with the first component being fitted snugly over an inner shape of the two cooperating first mould halves, and then making a stretch rod contact an inner bottom of the pre-blow plastic part; and d) blowing air through the blow head into the pre-blow plastic part to inflate the pre-blow plastic part to fit over an inner surface of the first component so as to form the article in the same first mould halves, wherein the first component is overmoulded onto an outer surface of the body of the article, wherein the solid first component is heated in step a) such that only the inner surface of the first component becomes soft to solder or stick to the outer surface of the body of the article to form the overmoulding therebetween, and wherein the inner surface of the first component is heated at the required temperature adjustable for adaption of the pre-blow plastic part to permit the soldering or stickiness of the inner surface of the first component onto the outer surface of the body of the article.