METHOD FOR MANUFACTURING A MONOLITHIC PLASTIC OBJECT, AND AN OBJECT OBTAINED WITH THIS METHOD

摘要

A method for manufacturing a plastic object comprises the steps of: (a) providing an injection moulding device with a mould which comprises two mould parts which in a closed position bound a mould cavity; (b) providing foaming means for causing foaming in the mould cavity of plastic injected into the mould cavity; (c) providing blocking means for temporarily rendering the foaming means effectively inactive; (d) energizing the blocking means; (e) choosing as plastic a mixture of two plastics, which first plastic is a random plastic or mixture of plastics, with the exception of type A, and which second plastic is type A and constitutes a maximum of roughly 30 percent by mass of the mixture, wherein type A is a plastic with high melt strength compatible with the first plastic, for instance HMS PP, which is high-melt-strength polypropylene; (f) causing a formed object to cool to a chosen temperature, opening the mould cavity and removing the cooled object.