Apparatus for producing polypropylene sheet

Details Apparatus for producing polypropylene sheet Apparatus for producing polypropylene sheet

1982-01-28

1984-01-31

Lowe, James B.

Plastic article or earthenware shaping or treating: apparatus

Continuous filament forming or film casting means with...

834251, 425296, 425404, B29D 702

Patent

active

044287208

ABSTRACT:
Apparatus is provied for forming an abrasion resistant sheet from a sheet of orientable thermoplastic polymer material in one continuous production line apparatus. Apparatus is also provided for treating the surface of an oriented sheet with heated rolls for creating a fused surface layer on each side of the sheet.

REFERENCES:
patent: 3394045 (1968-07-01), Gould
patent: 3582453 (1971-06-01), Sloan et al.
patent: 3762250 (1973-10-01), Huskey
patent: 3794118 (1974-02-01), Bauch
patent: 4140740 (1979-02-01), DeSmedt et al.
Translation of Swiss Doc. No. 456,933, Col. 2, line 26--Col. 3, line 23.

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