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US 2021/0197529 A1Published application
Method of making cross-linked polyethylene tubing
OwnerWilliam E. Hucks, Avinash Laddhainventors
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Abstract
A cross-linked polyethylene (PEX) tubing having an aluminum welded tube as reinforcement and method of making PEX tubing disclose tubing having an inner PEX layer and an outer polyethylene layer with an intermediate aluminum tube enveloped by adhesive layers for joining the inner and outer polyethylene layers with the aluminum tube. Carbon black particles are included in the polyethylene material for increasing absorption and dispersion of UV and thermal energy.
Claims5
A method of making cross-linked polyethylene tubing comprising the steps of:
- forming an inner PEX layer from polyethylene material;
- forming an intermediate aluminum tube from soft aluminum strips;
- forming an forming an inner adhesive layer and an outer adhesive layer from grafted low density polyethylene;
- enveloping the intermediate aluminum tube with the inner adhesive layer and the outer adhesive layer;
- forming an outer polyethylene layer from polyethylene material;
- joining the inner adhesive layer and the inner PEX layer;
- and
- joining the outer adhesive layer and the outer polyethylene layer.
5 more elements
Dependencies are inferred from the claim text.