












RECYCLING GRANULATION SCREW AND BARREL
fabrics.
USUAL SPECIFICATION | ||||||||
UP DIAMETER | Φ30MM- Φ400MM | |||||||
RATIO OF LENGTH TO DIAMETER | L/D RATIO=20-50 | |||||||
DOWN DIAMETER | Φ30MM-Φ300MM | |||||||
RATIO OF LENGTH TO DIAMETER | L/D RATIO=8-20 |
PP,PE, ABS, PS, PVC, PC Commonly used plastic recycling granulation series | ||||||||
Binary | ||||||||
USUAL SPECIFICATION | ||||||||
HOST DIAMETER | Φ90MM-Φ220MM | |||||||
RATIO OF LENGTH TO DIAMETER | L/D RATIO=25-32 | |||||||
HOST DIAMETER | Φ90MM-Φ200MM | |||||||
RATIO OF LENGTH TO DIAMETER | L/D RATIO=8-12 |
PA 6, PA66 nylon series. Screw barrel with a special structure design, high yield, wear resistance, screw no longer appear too much force and broken phenomenon. For waste silk, fishing net silk, safety rope, wood shavings, airbag cloth, cloth head and so on. | ||||||||
USUAL SPECIFICATION | ||||||||
DIAMETER | Φ90MM-Φ180MM | |||||||
RATIO OF LENGTH TO DIAMETER | L/D RATIO=22-30 |
Film , woven bags, foam and other soft materials series. Screw barrel structure has a side screw feed, side pellet feeding and so on. For conventional PP, PE, TPU, PC, PS, PET film materials, film series | ||||||||
USUAL SPECIFICATION | ||||||||
DIAMETER | Φ90MM-Φ280MM | |||||||
RATIO OF LENGTH TO DIAMETER | L/D RATIO=20-36 |
WATER GRANULATION SERIES. For water membrane materials, woven bags, tons of bags, air bags cloth, Koubei series. Screw barrel with a special feeding design, eat fast, smooth drainage, high yield. Common double-stage, three-stage. | ||||||||
USUAL SPECIFICATION | ||||||||
DIAMETER | Φ120MM-Φ280MM | |||||||
RATIO OF LENGTH TO DIAMETER | L/D RATIO=15-26 |
SQUEEZE DRY GRAIN SERIES. For film material with water, woven bags, pulp material, tons of packets such as extrusion granulation. Granulated particles compact, dry, sutiable for transport and re-granulation. | ||||||||
USUAL SPECIFICATION | ||||||||
DIAMETER | Φ200MM-Φ420MM |
TECHNICAL SPECIFICATION | ||||||||
Conventional material | 38CrMoAIA, SACM645, AISI4140, SKD61, GH113 | |||||||
Nitrided hardness | HV950-1200 | |||||||
Nitrided depth | 0.5-0.9MM | |||||||
Quenching hardness | HRC58-62 | |||||||
Nitrided brittleness | LESS THAN GRADE 2 | |||||||
Surface roughness | Ra 0.4 | |||||||
Screw straightness | 0.015mm | |||||||
Chromium plating layer hardness after nitriding | >=950HV | |||||||
Chrome plate thickness | 0.05-0.10MM | |||||||
Alloy depth | 2.0-3.0MM |
MATERIALS & PROCESSES | ||||||||
High grade 38CrMoAIA(41CrAIMo7) | ||||||||
SKD61(H13) | ||||||||
Corrosion resistance, wear resistance and double metal spraying process |









Zhoushan. ALVEN is a manufacturing enterprise, with professional design and manufacture of precision screw cylinder and the
ability of rubber and plastic machinery parts.Product design and development manufacturing, sales, after-sale service as one, the
introduction of demestic and foreign advanced processing equipment, plus several years of manufacturing experience, the product
ability in the formation of production process control, production facilities, inspection and testing and other aspects of human
and material resources, to improve the quality of products as the core concept. Companies adhere to the customer as the center, to
strictly control the quality of the production process, the implementation of lean production management to ensure that the
quality of the testing process continues to be effective, excellent product quality.
ALVEN the way forward is very long and very difficult, we will continue to work hard, continue to progress, to win more
customers support and more broad market.
PROFESSIONAL ABILITY
3. SCREW PRODUCTS CUSTOMIZATION
4. SCREW PRODUCTS TRANSFORMATION
5. SCREW PRODUCTS REPAIR