Method and composition of making polymer products
AssigneeUponor Infra Oy
InventorsTommy Ånäs, Hannes Mero
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Abstract
A method and composition of making polymer products from thermoplastic polymers by melt processing. Cross-linked polyethylene are mixed with at least one thermoplastic matrix polymer to form a polymer composition which is melt-processed. The cross-linked polyethylene is formed by a finely divided powder with particles having a screened size of less than 600 μm and a D50 of 200 to 400 μm. Cross-linked polyolefin can be used in a cost-effective and simple manner so that products generally considered a waste, such as scrapped cross-linked polyethylene pipes or unused cross-linked polyethylene discarded in e.g. pipe making processes, can be recycled and used as a starting material for polymer products.
Claims10
A polymer product assembly comprising a plurality of elongated polymer profiles laterally welded together, wherein said polymer profiles each comprise up to 60% by weight of a cross-linked polyethylene mixed with at least one polyolefin, the cross-linked polyethylene comprising particles having a screened particle size of less than 600 μm and a D50 of 200 to 400 μm.
Dependencies are inferred from the claim text.