Molding of glass wool with wrinkle-free surface

Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Plural – intermittent pressure applying

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264119, 264123, 264324, 264327, B29G 100

Patent

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045086737

ABSTRACT:
The process includes a first molding step with an upper surface of the glass wool pelt having been sprayed with water and with a lower surface of the glass wool pelt insulated from the lower mold portion by a previously molded glass wool insulating sheet, and a second molding step with the insulating sheet removed.

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