Zhoushan Tongfa Machinery Co.,Ltd, locating in City of China Screws and Holy Place of Buddhism, Zhoushan city, is specialized in manufacturing plastics machinery, they are compounding extruder, color masterbatch extruder, pipe, sheet and profile extrusion line, barrels and screws and other relative auxiliary equipments.
Tongfa Machinery Co.,Ltd is a Provincial-level Hi-tech company. The conical co-rotating twin-screw extruder is our patent product(patent No.:ZL200510118915.3) which combines the advantages of conical counter-rotating twin-screw extruder s high extrusion force and parallel co-rotating twin-screw extruder s good plasticizing effect, featuring high compounding, high extrusion force, good plasticizing and low energy consumption. The capacity of the conical co-rotating twin-screw extruder is two times the other kinds and the specific power is only about the half. The invention of the conical co-rotating twin-screw extruder becomes the revolution of the plastics extruder industry. On 30th December, 2007, the product passed the authentification of China Provincial-level product. In 2008, the conical co-rotating twin-screw extruder was granted China National Hi-tech New Product by Chinese government. On December, 2009, our company got the certificate of Invention Patent of the conical co-rotating twin-screw extruder(No.:ZL200510118915.3).
At present, our products have been exported to Thailand, Korea, Japan, India, Pakistan, Russian, Taiwan and other places, well received.
Zhoushan Tongfa Machinery Co.,Ltd bas been established since 1994, now owns factory building more than 10000 square meters.
2008 Provincial-level Hi-tech Company by Zhejiang Science and Technology Department
2008 Provincial-level Credit Company
2009 China Plastics Industry Advanced Company by CPPIA
2010 Conical Co-rotating Twin-screw Extruder Industry Standards No.1 draftsman by Ministry of Industry and Information Technology of P.R.C.
SJSZ series Conical co-rotating Twin-screw Extruder is the leading technology of the world. Equipped with special auxiliary equipments, it is able to process PVC, PP, PE, PS, ABS, PC, EVA, PMMA to pipe, sheet, profile and pellets.
High quality and clients s satisfaction is our permanent pursuit.
The screws and barrels are made of 38CrMoAlA alloy steel, after by nitrogen hardening and bi-metallic coating, featuring abrasion-resistant and corrosion-resistant. Each screw is specially designed in order to effect best plasticizing. We choose ABB electronic elements, Fuji frequency converter, RKC temperature controller. The distribution gearbox has been specially designed for longer running time and bigger extrusion force. Each machine has been carefully manufactured and strictly tested before delivery.
At present, we have designed following products:
SJSZ series RPVC compounding extruder
SJSZ series cable jacket compound extruder
SJSZ series PP/PE/PS/ABS/PC compounding extruder
SJSZ series high compounding extruder
SJSZ series TPR compounding extruder
SJSZ series color masterbatch extruder
SJSZ series pipe/sheet extrusion line
SJSZ series UHMWPE extrusion line
SJSZ series WPC extrusion line