High Hardness Plastic Extrusion Dies / PP PA PW Sheet Extrusion Die Polishing

Product Specification

Product/Mold Description

In the extrusion of plastics, the raw compound material is commonly in the form of nurdles (small beads, often called resin) that are gravity fed from a top mounted hopper into the barrel of the extruder. Additives such as colorants and UV inhibitors (in either liquid or pellet form) are often used and can be mixed into the resin prior to arriving at the hopper. The process has much in common with plastic injection molding from the point of the extruder technology, although it differs in that it is usually a continuous process. While pultrusion can offer many similar profiles in continuous lengths, usually with added reinforcing, this is achieved by pulling the finished product out of a die instead of extruding the polymer melt through a die.

The material enters through the feed throat (an opening near the rear of the barrel) and comes into contact with the screw. The rotating screw (normally turning at e.g. 120 rpm) forces the plastic beads forward into the heated barrel. The desired extrusion temperature is rarely equal to the set temperature of the barrel due to viscous heating and other effects. In most processes, a heating profile is set for the barrel in which three or more independent PID-controlled heater zones gradually increase the temperature of the barrel from the rear (where the plastic enters) to the front. This allows the plastic beads to melt gradually as they are pushed through the barrel and lowers the risk of overheating which may cause degradation in the polymer.

Extra heat is contributed by the intense pressure and friction taking place inside the barrel. In fact, if an extrusion line is running certain materials fast enough, the heaters can be shut off and the melt temperature maintained by pressure and friction alone inside the barrel. In most extruders, cooling fans are present to keep the temperature below a set value if too much heat is generated. If forced air cooling proves insufficient then cast-in cooling jackets are employed.

1. Product Name: UPVC Plastic Window Extruder Mold
2.Grade: 3Cr17, 3Cr17MoNiV, DIN1.2316 or as per your request
3. Size: As customer request
4.Product classify:
1) Mould for imitation marble line, door line and waterbar;
2) Mould for PVC+ wood powder surface crusting foaming profile;
3) Mould forPE/PP+ wood powder, PE co-extrusion (rice bran powder, saw dust, wheat strawetc.);
4) Mould for PVC low foaming profile, co-extrusion mould for PVC foamdecoration profile;
5) Mould for hard PVC door, door panels;
6) Profile moulds ofcolor co-extrusion and soft-hard co-extrusion ;
7) Co-extrusion moulds forsteel-plastic and aluminum-plastic composite;
8) Colors co-extrusion moulds ofboard, wire duct.
9) Mould for PVC quick assembling wallboard.

Mold Show

Advantage:

1.We have rich and professional experience in PVC and WPC mould production.

2.Zhuoran is the first factory which can design and produce stone plastic imitation marble line.Our team is young and creative.we have enough energy and ability to design and produce new product.

3.OEM service.We can offer you customized product as your sample or drawing design

4.Competitive price. Best quality. Delivery in time. Prefect service

5.We can not only offer you our best mould,but also provide service and technology.

6.24-hour service. We will keep 24-hour on line.You can contact with us in any tim

FAQ:

Q: Are you trading company or manufacturer ?

A: We are the most rich experience and professional pe,pvc and wpc extrusion mould factory in china.

Q: What is your delivery time?

A: Generally speaking,15-40 days after receiving the deposit and confirm the order and all details.

Q: What is your terms of payment ?

A: T/T is our main payment, If you want to pay by other payment.we can negotiate.

Q: What is your main market?

A: Our market spread all over the world.But our main market still now is in Middle east,Ukraine,Italy Russia and so on.

Q: How can you ensure the quality of mould:

A: We will test the mould before shippment.if you still worried about the quality,you can send us the material formula or examine the mould to our factory.