Perhaps many people have discovered that most of the extruders used in large-scale product production lines are single-screw structures, and very few are twin-screw structures. Upstream raw material suppliers, especially manufacturers of modified materials, functional masterbatches or color masterbatches, mostly use twin-screw extruders. Why is there such a difference? In this article, the editor will analyze and discuss the difference between single-screw extruders and twin-screw extruders.

The plastic granulator is a kind of equipment commonly used to produce plastic granules. The temperature regulation of each area is very important for product quality and production efficiency. The following will introduce in detail the temperature regulation method of each area of the plastic granulator.

CaCO3 powder, also known as calcium carbonate powder, is often added to plastic pellets for the following reasons:1. Reduce costs 2. Improve mechanical properties 3. Density Adjustment 4. Improved processing properties 5. Environmental benefits 6. Improve the heat resistance of plastic products 7. Improve the light diffusion of plastics 8. It can make the product have some special properties

The performance parameters of calcium carbonate have such a great influence on the filling masterbatch! 1. Calcium content 2. Whiteness and hue 3. Water and volatile matter content 4. Particle size distribution 5. Particle shape 6. Content of other components

The structure of a twin-screw extruder is very similar to that of a single-screw extruder, but its working principle is very different. In a single-screw extruder, material transportation relies on the friction and viscous resistance of the material, so the residence time distribution is wider. In contrast, the material conveying of the twin-screw extruder relies on the positive displacement of the screw, so the residence time distribution is narrower. The raw materials of the twin-screw extruder are fed through the feed port by a metering feeder. Some additives (such as glass fiber) need to be added through the feed port in the middle of the barrel and transported to the die head by the screw. During this process, the movement of the material varies depending on the screw meshing method and the direction of rotation. This article will introduce the specific differences in their working principles from this perspective.

In the process of extrusion granulation, the feed system plays a key role in the force and coordination between the cutter and the template for the smooth operation of the unit. Let's take a look at the relationship between the feed hydraulic oil pressure and the retract balance system hydraulic oil pressure in the actual production process, and the practical effect after improvement.

Six kinds of recycled plastic process 1.Process flow of recycled low-density polyethylene (LDPE) 2.Recycled Polypropylene (PP) Process 3.Recycled polyethylene terephthalate (PET) process flow 4.ABS plastic process flow 5.Recycled Polycarbonate (PC) Process 6.Recycled polyvinyl chloride (PVC) hard material process flow

How to choose among 7 pelletizing methods? 01.Process performance of pelletizing device 02.When ordering, is it better to choose cold cuts or hot cuts? 03.There are seven types of pelletizing lines commonly seen on the market:

Several key points that determine the quality of black masterbatch. 1. High dispersion 2. Strong coverage 3. Good liquidity 4. Compatibility should be large

As the main equipment for compounding production, the extruder is the most difficult and dangerous to operate. Today, we have sorted out some tips for you to keep in mind during the operation and debugging of the extruder, so as to protect safe and efficient production.