초록 ▼

Device for blow molding a hollow body with a blow molding device in which at least two solid flange rings are molded in the circumferential wall of the hollow body from the same thermoplastic synthetic material of the hollow body. The flanges are formed by compressing and fusing the material with a

Device for blow molding a hollow body with a blow molding device in which at least two solid flange rings are molded in the circumferential wall of the hollow body from the same thermoplastic synthetic material of the hollow body. The flanges are formed by compressing and fusing the material with a tandem slide. The movable slide parts travel unlike distances at unlike speeds of movement.

대표청구항 ▼

The method for producing a hollow body of synthetic material defining a vessel open at one end and an associated lid by means of blow molding, said method comprising the steps of: a) molding the vessel and the associated lid simultaneously in one blow molding operation with said lid having a lower s

The method for producing a hollow body of synthetic material defining a vessel open at one end and an associated lid by means of blow molding, said method comprising the steps of: a) molding the vessel and the associated lid simultaneously in one blow molding operation with said lid having a lower surface complementary in shape to the upper open end of the vessel for seating engagement thereon after being separated from the vessel and with a surface flange on the vessel and an annular flange on the lid disposed in spaced axial position along said hollow body; b) forming said flanges by blow molding material into two annular recesses arranged in spaced axial position in a blow molding device, the blow molding device having two annular mold slides, one slide associated with one recess and the other associated with the other recess and compressively molding the material in the recesses by axially moving the two thereby moving the material within the two annular recesses in a direction extending axially of the hollow body; and c) separating the lid from the vessel after formation of the flanges.