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Title:
PULSATING PLASTICIZING SCREW BASED ON VOLUME DEFORMATION
Document Type and Number:
WIPO Patent Application WO/2019/134250
Kind Code:
A1
Abstract:
Disclosed is a pulsating plasticizing screw based on volume deformation, comprising a feeding segment (1), a pulsating plasticizing segment (2), an exhaust segment (3), a secondary pulsating plasticizing segment (4) and a homogenizing segment (5), wherein space curves forming the feeding segment (1), the pulsating plasticizing segment (2), the exhaust segment (3), the secondary pulsating plasticizing segment (4) and the homogenizing segment (5) have a positive displacement characteristic; the space curves of the pulsating plasticizing segment (2) and the secondary pulsating plasticizing segment (4) periodically change; and a spiral groove (9) of the screw is divided into a series of large-volume spiral grooves (6) and small-volume spiral grooves (7) by spiral edges (8). During the rotation of the screw, when plastic particles pass through the two pulsating plasticizing segments (2, 4), the volume of the plastic particles is periodically fluctuated, the dispersion and plasticization of plastic are completed by the volume deformation, the internal heat generated by friction between molecules is reduced, and the molding process window of plastic products is widened; and meanwhile, the plasticizing mechanism of extensional rheology and shear rheology is met, and under the premise of ensuring production, the length of the screw is greatly shortened, thereby obtaining a lower energy consumption ratio.

Inventors:
WU, Jun (No.3 Building 5, Fangjian Road the 38th Street Hongwei Road, Qingshan Distric, Wuhan Hubei 0, 430000, CN)
CHEN, Ruiming (No.3 Building 5, Fangjian Road the 38th Street Hongwei Road, Qingshan Distric, Wuhan Hubei 0, 430000, CN)
Application Number:
CN2018/077799
Publication Date:
July 11, 2019
Filing Date:
March 01, 2018
Export Citation:
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Assignee:
WU, Jun (No.3 Building 5, Fangjian Road the 38th Street Hongwei Road, Qingshan Distric, Wuhan Hubei 0, 430000, CN)
International Classes:
B29C45/62; B29C45/60
Attorney, Agent or Firm:
WUHAN WIST PATENT FIRM (YU Lixia, Room 12 12th Floor, 1st Building, Guannan Fuxing Medicine Park, No.58 Optical Valley Road, East Lake High-tech Development Zon, Wuhan Hubei 0, 430000, CN)
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