FIELD: mechanics.
SUBSTANCE: cover jacket includes the base wall with skit for fastening on the container end section and shoulder that extends radially inside aforesaid skirt, into position, nearby but at a certain distance from aforesaid base wall. The said shoulder accommodates at least one channel. The invention includes the cover and method of producing it. This invention allows new design of the cover wherein mold cavity is vented through the cover jacket.
EFFECT: improved ventilation of mould cavity, reduction or elimination of air bubble entrapping inside mold grid, reduced rejections and lower costs.
13 cl, 5 dwg
