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US 2003/0122275 A1Published application
Method of creating a line made of plastic with a branch and mold for producing a line having a branch
OwnerLars Koschniginventor
Life of this patent
Estimating the term…
Abstract
A method of creating a line made of plastic with a branch. During blowing through of a flow cross section of the line, an annular web is created in the region of a flow cross section of the branch as a predetermined breaking location. Subsequently, a plastic part held by the web can be detached from the line.
Claims10
A method of creating a line made of plastic with a branch, the line and the branch respectively having interconnected flow cross sections and a common wall, comprising:
- filling a mold corresponding to the line with the branch with liquid plastic;
- and
- blowing out the flow cross section of the line, wherein
- the flow cross section of the branch is pre-formed apart from an annular web adjacent to the flow cross section of the line and the web is subsequently severed.
1 more element
A mold for creating a line made of plastic with a branch, comprising:
- a mold part corresponding to an outer wall of the line and of the branch;
- means for creating an internal pressure for blowing out of a flow cross section of the line;
- and
- a ring element arranged in a region of the flow cross section of the branch to reduce wall thickness during the blowing out of the flow cross section of the line.
1 more element
Dependencies are inferred from the claim text.