Main > POLYMERS > Poly(Ester) > Waste > Regeneration

Product Japan. Y

PATENT ASSIGNEE'S COUNTRY Japan
UPDATE 05.00
PATENT ASSIGNEE YKK Corp
PATENT CLAIMS Method for mfg regenerated polyester
- Prepg primary pellets by granulating waste polyester mate
rial with a rotary blade, heating & melting said granulated
material & deaerating & extruding the hot molten polyester
to obtain a strand, & then pelletizing the extruded strand
- Prepg regenerated pellets by subjecting said primary
pellets to solid-phase polymn in vacuum at 185-200C
- Forming said regenerated pellets into a prescribed shape
PATENT PHOTOCOPY Available on request

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