Title:
METHOD FOR PRODUCING RESIN PELLET CONTAINING REINFORCING FIBER
Document Type and Number:
Japanese Patent JP2022154027
Kind Code:
A
Abstract:
To provide a method for producing a resin pellet containing reinforcing fibers, which has an excellent productivity and excellent mechanical property equivalent to a long fiber reinforced resin pellet.SOLUTION: A method for producing a resin pellet containing reinforcing fibers, uses: a twin-screw extruder 1 that includes a first kneading unit 5, and a second kneading unit 6 that is provided at a side closer to an outlet than the first kneading unit 5 and has a reverse feed screw element having a notch and/or a kneading disk including a reverse feed; and a die 2 equipped with a nozzle 9, provided at an outlet of the twin-screw extruder 1. The method comprises the steps of: melt-kneading a resin in the first kneading unit 5; supplying reinforcing fibers into the twin-screw extruder 1 from a side closer to an outlet than the first kneading unit 5 and a side closer to an inlet than the second kneading unit 6, and further melt-kneading the resin in the presence of the reinforcing fibers; and extruding a melted and kneaded resin containing the reinforcing fibers from an outlet of the nozzle 9 of the die 2 as a strand of the reinforcing fiber-containing resin, in which the nozzle 9 satisfies predetermined requirements.SELECTED DRAWING: Figure 1
Inventors:
HASHIZUME SATOSHI
MATSUDA YUICHI
SASAKI SHUHO
MATSUDA YUICHI
SASAKI SHUHO
Application Number:
JP2021056852A
Publication Date:
October 13, 2022
Filing Date:
March 30, 2021
Export Citation:
Assignee:
PRIME POLYMER CO LTD
International Classes:
B29B9/14; B29B9/06; B29C48/285; B29C48/345; B29C48/40; B29C48/55; C08J3/20
Attorney, Agent or Firm:
Patent Attorney Corporation SS International Patent Office