Screw dedicated for extruding pelletizing and pelleting for radiation cross-linking polyolefin foamed plastic

• Main Author: JIANZHONG LIAN
• Format: Patent
• Language: English
• Published: 11.07.2007
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; MAKING GRANULES OR PREFORMS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a screw used to protrude particles and sheets of polyolefin foam plastic, wherein it comprises transmission screw section, groove baffle fold section, incline groove multi-head screw diverting section, etc. The groove baffle fold section is formed by several torsion channels on the face of screw; the torsion channel is formed by groove whose outlet is sealed and the narrow slim whose inlet is sealed. The invention can uniformly disperse the material in transmission, via shade structure to stop the non-fused solids, divert the direction and improve the disperse degree of additive. The inventive foam product has uniform holes.