US 11,938,676 B2
Molding apparatus, molding method, and method for producing molded article
Nobuki Hirooka, Yokohama (JP); and Masao Yamawaki, Kure (JP)
Assigned to Mitsubishi Gas Chemical Company, Inc., Tokyo (JP)
Appl. No. 17/269,636
Filed by Mitsubishi Gas Chemical Company, Inc., Tokyo (JP)
PCT Filed Aug. 15, 2019, PCT No. PCT/JP2019/032005
§ 371(c)(1), (2) Date Feb. 19, 2021,
PCT Pub. No. WO2020/040025, PCT Pub. Date Feb. 27, 2020.
Claims priority of application No. 2018-154946 (JP), filed on Aug. 21, 2018.
Prior Publication US 2021/0237352 A1, Aug. 5, 2021
Int. Cl. B29C 67/00 (2017.01); B29C 64/118 (2017.01); B29C 64/209 (2017.01); B29C 64/35 (2017.01); B29C 70/20 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01)
CPC B29C 64/209 (2017.08) [B29C 64/118 (2017.08); B29C 64/35 (2017.08); B29C 70/20 (2013.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12)] 9 Claims
OG exemplary drawing
 
1. A molding apparatus comprising a nozzle, a guide member guiding a molding material to the nozzle, and a heating device, wherein
the molding material contains a thermoplastic resin,
the guide member being a tubular member,
a prevention structure to prevent melting of the molding material during transportation of the molding material through the guide member is a heat insulation material, or a gap between the heating device and the guide member,
a part of the guide member is disposed inside the nozzle,
the heating device heats the molding material so as to melt during transportation of the molding material through a nozzle port of the nozzle,
the nozzle includes the nozzle port and a hole that is communicated with the nozzle port,
a tip end side of the guide member is disposed toward the nozzle port,
the shortest distance between a location of the nozzle port and the tip end position of the guide member is smaller than an inner diameter of the nozzle port,
a temperature of the guide member is less than a temperature at which the molding material being transported through the guide member melts and is 50° C. or less,
the heat of the heating device does not melt the molding material during transportation of the molding material through the guide member, and
the nozzle port has a rounded shape.