Abstract: Method for manufacturing an injection-moulded article using a recycled polyester Method for manufacturing an injection-moulded article, preferably a preform (11) of a bottle (I) in particular an aerosol bottle, made of polyester, said article, in particular said preform (II), preferably comprising a tubular body (14) closed at one end (16), the method comprising the following steps of: a) providing at least one polymer material comprising a recycled polyester in a weight proportion of at least 10% relative to the total weight of said at least one polymer material and an eventually supplement comprising virgin polyester to form the 100% by weight of said at least one polymer material, b) producing the injection-moulded article by injecting, into a mould, said at least one polymer material.

Abstract: A method for manufacturing an injection-molded article, preferably a preform (11) of a bottle (1), in particular an aerosol bottle, made of a crystallizable polymer material, this article having at least one crystallized part (3), in particular a neck, and preferably a tubular body (14) closed at one end (16), the method comprising the following steps: a) producing an injection-molded article, preferably an injection-molded preform (11), by injecting the crystallizable polymer into a mold, b) crystallizing said part (3) of the injection-molded article, in particular of the injection-molded preform, by heating and then cooling the latter, wherein, in said method, between step a) and step b), the injection-molded article, in particular the injection-molded preform (11), is held for a sufficient duration under storage conditions such that it undergoes moisture uptake of at least 0.4% by weight.