Loading patent…
AssigneePlastic Omnium Advanced Innovation and Research
InventorsJean-Francois Coing, Sebastien Jouie, Yvonnig Guezennec, Philippe Coulon, Andre George, Jozef Franko
Estimating the term…
A method for forming a welding spout of a plastic tank from a multilayer parison, during blowing of the parison for manufacturing the tank. The method includes, in a blowing mold including two cavities and an insert, one of the cavities delimiting a recess for forming the welding spout, the recess having a mouth opening opposite the insert: providing a push member on the insert opposite the mouth of the recess of the cavity, capable of assuming a first position set back from the recess and a second position in which the push member occupies a portion of the mouth of the recess; positioning the push member in the first position thereof; blowing the parison to match a shape of the cavities; during creeping of the parison towards the inside of the recess, moving the push member into the second position thereof.
A process for forming a welding spout projecting from an outer surface of a tank of plastics material from a multilayer parison during a course of blowing the parison for manufacture of the tank, the method comprising implementing the following stages in a blowing mold including two cavities and an insert placed inside the multilayer parison between the two cavities, one of the cavities delimiting a recess for formation of the welding spout, the recess having an opening which opens towards the insert:
Dependencies are inferred from the claim text.