US 8,075,301 B2 · Suction blowmold for producing extrusion suction-blowmolded plastic molded parts

Abstract

A suction blowmold (1) having a cavity (3) formed by two mold halves (9) for producing extrusion suction-blowmolded plastic molded parts (10) using the suction-blowing method, in which an extruded, plastically deformable preform (2) in the form of a plastic melt tube is brought into the closed cavity (3) and in position in the cavity at least partially sliding on the mold surface (5). The suction blowmold (1) according to the present invention is characterized in that at least a part of the mold surface (5) of the cavity (3) has a structuring which provides a reduced sliding friction to the preform (2). A method for producing such a suction blowmold (1), the use thereof for producing extrusion suction-blowmolded plastic molded parts (10), and corresponding extrusion suction-blowmolded plastic molded parts (10) are additionally disclosed.

Claims6

Dependent claims

A suction blowmold, having a cavity formed by two mold halves for producing extrusion suction-blowmolded plastic molded parts using the suction blowmold method, in which an extruded, plastically deformable preform in the form of a plastic melt tube is brought into the closed cavity and into position in the cavity at least partially sliding on a mold surface, the suction blowmold comprising a suction device for introducing the preform into the closed mold halves,

wherein at least a part of the mold surface of the cavity has a structuring formed directly into the mold surface, said structuring having an Ra value between 0.8 and 6.3 μm and an Rz value in the range from 6 to 40 μm and providing a reduced sliding friction to the preform.

Dependencies are inferred from the claim text.

Facts

Application

11/933,547Filed 1 Nov 2007

Priority

EP 07 100 39011 Jan 2007

Published

US 2008/0171163 A117 Jul 2008

Granted

13 Dec 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification22 codes

B29C 49/4242
Component parts, details or accessories; Auxiliary operations: means for deforming the parison prior to the blowing operation
B24C 1/06
Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods: for producing…
B29C 33/424
Characterised by the shape of the moulding surface, e.g. ribs or grooves: moulding surfaces provided with means for marking or patterning
B29C 49/04
Combined blow-moulding and manufacture of the preform or the parison: extrusion blow-moulding

Suction blowmold for producing extrusion suction-blowmolded plastic molded parts

Life of this patent

Suction blowmold for producing extrusion suction-blowmolded plastic molded parts

Life of this patent

Abstract

Claims6