FIELD: pipeline insulation from heat-retention polyolefin foam.
SUBSTANCE: invention relates to method for production of physically foamed heat-retention polyolefin foam and expanded material made from the same. Polyolefin foam is obtained by extrusion of expanded material composition containing (mass %): metallocene polyethylene 77-92; antipyrene 5-10; cell stabilizer 3-8; and other additives 0-5 % using physical foaming agent. Flexible expanded material of present invention has wide-range application, in particular it is useful as insulator for thin and/or twisted pipelines. Forasmuch foam is obtained using physical foaming agents and is not chemically cross-linked it may be reprocessed for reutilization.
EFFECT: flexible heat-retention polyolefin foam of improved quality.
10 cl, 1 ex
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|---|---|---|---|
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