Invention Grant
- Patent Title: Transparent thermoplastic resin pellet manufacturing method
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Application No.: US14371102Application Date: 2012-12-21
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Publication No.: US09751990B2Publication Date: 2017-09-05
- Inventor: Takayoshi Tanaka , Munehiro Chosa , Yasunobu Yamazaki
- Applicant: IDEMITSU KOSAN CO., LTD.
- Applicant Address: JP Chiyoda-ku
- Assignee: IDEMITSU KOSAN CO., LTD.
- Current Assignee: IDEMITSU KOSAN CO., LTD.
- Current Assignee Address: JP Chiyoda-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2012-002510 20120110
- International Application: PCT/JP2012/083355 WO 20121221
- International Announcement: WO2013/105422 WO 20130718
- Main IPC: B29B7/42
- IPC: B29B7/42 ; B29B9/06 ; C08J3/00 ; B29B9/12 ; B29B9/16 ; B29B7/48 ; B29C47/60 ; B29C47/92 ; B01F7/00 ; B29B7/00 ; B29B7/80 ; B29K69/00

Abstract:
A method for producing a transparent thermoplastic resin pellet comprising a step of kneading a transparent thermoplastic resin with a kneader under a condition under which a damage history calculated according to the following formula is 500 to 2,500: Damage history={Residence time (tr)}×{Shear rate (γ)} Residence time (tr)=(W×H×L)/Q Shear rate (γ)=(π×D×N)/H in the formulae, W represents a screw groove width (pitch) [cm]; H represents a screw groove depth [cm]; L represents a screw length [cm]; Q represents a resin supply amount [g/s]; D represents a screw diameter [cm]; and N represents a screw rotation number [rps].
Public/Granted literature
- US20150018511A1 TRANSPARENT THERMOPLASTIC RESIN PELLET MANUFACTURING METHOD Public/Granted day:2015-01-15
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