1 Shows an axial half cross section, a neck cooperating with the thread of a plug and its method of manufacturing

摘要

The present invention relates to a container comprising at least one substantially cylindrical body (1) provided at its upper end of a threaded neck (2) and a cap (5) comprising a tapped hole (6) formed in the internal lateral skirt (7) of the said cap (5), the thread (6) cooperating with the thread of the neck (2) to close the container, characterized in that the body (1) and the cap (5) are obtained with polyethersulfone. Another object of the invention relates to a method of manufacture of a container according to the invention. Said method is remarkable in that it comprises at least the following steps of injection of polyethersulfone at a temperature of between 300 and 400°C. at a pressure of between 1200 and 1400 bar in an unscrewing mold maintained at a temperature of between 130 and 170°C. and comprising at least one cavity of the plug, and then cooling the material in the mold is maintained at a temperature of between 130 and 170°C, of less than the melting temperature of polyethersulfone, for a period of between 25 and 35 seconds, such as polyethersulfone sets, and finally of the ejection of the stoppers of polyethersulfone using the opening force of the press of the unscrewing mold, the press, cooperating with the mold by means of a screw with a rack.