Carbon black masterbatch

Carbon Black Masterbatch

Selection of carbon black Carbon black is the most cheap, high-quality and excellent ultraviolet stabilizer. If carbon black particle size is very small (20 nm), the carbon black concentration is generally set at 2.5%+0.5%. According

Extruder screw often wears out There are these main reasons

Extruder screw often wears out? There are these main reasons!

Screw extruder is the core equipment of plastic forming and blending modification. In the actual blending modification production process, the screws of the extruder are exposed to harsh high pressure and high temperature environment, and

Biodegradable Plastics Extruder

Biodegradable Plastics Extruder

In recent years, with the implementation of the «plastic ban», biodegradable plastics have gradually entered the public’s vision, which is of vital significance for the development of environmental protection packaging industry. At present, there are


Plastic Recycling Granulation — Plastic Pellet Making Machine

The choice of extruder depends mainly on what material the plastic needs to be recycled by the customer and what output is required per hour. if the customer produces PP recycling and granulation, the required output is 100~150kg/h, the raw material particles are large but the plasticization requirements are not high, the CSE-65 single screw extruder is the most suitable.


Caco3 Filler Masterbatch Extruder

The machine model is mainly determined according to the customer’s output. The L/D of the twin screw extruder is the higher the better. It is usually required to be more than 40 with a high cost-performance ratio. Generally, the 52mm, 65mm, and 75mm twin screw extruders are more popular with customers. The triple screw extruders of 52mm, 65mm and 75mm have a higher output and better mixing effect than the twin screw extruders of the same model.

Operation and Precautions of Twin Screw Extruder

Twin screw extruder is used to extrude molten plastic through a fixed shape extrusion mouth under the action of the screw, and cut it after being water-cooling or air-cooling. It is used in the filling, blending,

How to choose PVC cable raw materials

How to choose PVC cable raw materials?

PVC has been widely used in the production of cable materials because of its excellent corrosion resistance, electrical insulation, especially its flame resistance and self extinguishing. PVC cable material is pellet prepared by mixing, kneading and

Filler Masterbatch Machine

Filler Masterbatch Machine

Filling masterbatch refers to the mixing and mixing of various additives, fillers and a small amount of carrier resin for the convenience of operation in the process of plastic processing and molding. The design of filling masterbatch formula has only fixed design concept and purpose, and there is no fixed formula. Different formulas of different equipment and processing environment of powder need to be adjusted properly.

Color Masterbatch Extruder

Color Masterbatch Extruder

Color masterbatch is a special colorant for new polymer materials. Different types of color masterbatch have different uses. However, color masterbatch is basically used for coloring products such as plastics, pipes, packaging, electrical enclosures, films, moisturizing materials, clothing fibers, and improving unique properties.

PVC cable material

PVC cable material

PVC cable material is a pellet prepared by taking polyvinyl chloride as the base resin, adding plasticizers such as stabilizer, dioctyl phthalate, diisopropyl phthalate, dioctyl terephthalate, trioctyl trimethylene terephthalate, and inorganic fillers such as calcium

Causes and solutions of template plugging

Causes and solutions of template plugging

The template of the extruder is composed of a die plate body with a discharge hole and a thermal insulation layer, and is fixed to the die head with a threaded rod. Only when the


How to choose high performance twin screw extruder

Twin screw extruder is an important equipment in plastic processing machinery. It is not only suitable for extrusion molding and mixing processing of polymer materials, but also has been widely used in food, feed, electrode,

Key Points to pay attention to when selecting plastic extruder

Key Points to pay attention to when selecting plastic extruder

According to the different production materials, product specifications and material consumption of customers, it is necessary to select the diameter of the screw first, and then further select the specification and model of the extruder.

Causes of “material emission from vacuum port”

Causes of “material emission from vacuum port”

In the process of extrusion production, gases need to be discharged from the melt. If these gases cannot be discharged, defects such as pores, bubbles and dull surface may appear on the surface or inside

Characteristics of co-rotating Twin screw extruder

Characteristics of co-rotating Twin screw extruder

Characteristics of intermeshing co-rotating twin screw extruder There are many kinds of twin screw extruders, of which the intermeshing co-rotating twin screw extruder is a kind of production and processing equipment widely used in the plastic industry.

How to disassemble and assemble extruder screw?

How to disassemble and assemble extruder screw?

Nanjing Cowin screw is designed according to the building block principle, and the combination can be changed according to the operation needs. When disassembling the screw, try to drain all the materials of the main

TPU twin screw extruder

TPU Twin Screw Extruder

TPU modified granulation process:Twin screw extruder — screen change — water-cooling strand pelletizing granulation auxiliary machine — water trough — dryer — pelletizer — vibrating screen — siloTwin screw extruder — melt pump — screen change — Underwater granulation auxiliary machine — underwater pelletizer — water circulation system — centrifugal dehydrator — vibrating screen — silo

PVC compound machine

PVC Compound Machine

PVC generally needs to be modified and granulated first. The basic principle of modification is to endow materials with functions or improve some properties through additives. PVC granulation generally uses a two-stage machine, the upper stage adopts a twin-screw extruder, and the lower stage adopts a single screw extruder.

ABS engineering plastics - increasingly close to our life

ABS engineering plastics — increasingly close to our life

ABS (Acrylonitrile butadiene Styrene copolymers) chemical name: acrylonitrile butadiene styrene copolymer. It is a kind of alloy plastic made of the above three materials according to different proportions. It has many characteristics, such as high


TPE extruder

For TPE as an elastomer, the most difficult process is how to granulate. In the selection of extruder, the extruder model of 52mm-95mm is usually selected, L/D is 48:1, the screw material is W6Mo5Cr4V2, and the barrel is block type, 45# steel + overall sleeve structure.

Bio based TPU

Bio based TPU

The production and process of bio based TPU are becoming more and more mature. Twin screw extruder and underwater pelletizing unit can provide customers with efficient production environment and reliable production output.

Analysis on vacuum exhaust of twin screw extruder

Analysis on vacuum exhaust of twin screw extruder

This paper introduces the reasons why the twin-screw extruder needs vacuum exhaust, the composition of the vacuum system and the operation steps for the vacuum exhaust of the twin-screw extruder.


PET Sheet Extrusion Line

The Characteristics of Cowin’s PET extruder machine High vacuum degree. High torque twin screw extruder. Unique screw element and combination design.Low energy consumption. High precision pressure closed-loop control system, automatic control.Multi-layer extrusion, stable and reliable. Recommended


Thermoset Plastic Extrusion Line

high-speed mixer feeder twin screw extruder machine cooling air pulverizer cyclone separator fine powder recycling tower Muffler The excellent mixing capability, self wiping characteristics, and accurate temperature control of the co-rotating twin-screw extruder enable thorough


TPV twin screw extruder

TPV twin screw extruder, Twin Screw Extruder Underwater Pelletizing Line. Introduction to TPV processing technology and buying guide.

Cleaning Method of Plastic Extruder

Many customers do not know how to clean the plastic extruder after it has been used for a period of time, which takes a lot of time. If it is not handled properly, it will

LFT (Long-Fiber Reinforce Thermoplastic)

LFT (Long-Fiber Reinforce Thermoplastic)

This article describes the development history of LFT, its processing technology, and its advantages compared to other composite materials and metals.


Wear and maintenance of screw

The screw has an important influence on the plasticization of materials, product quality and production efficiency. This article mainly writes the damage reasons and maintenance of the extruder screw.


Cowin Extrusion at CHINAPLAS 2022 (April 25 — April 28)

Dear Sirs/Madam: We hereby sincerely invite you and your company representatives to visit our booth at National Exhibition and Convention Center (Shanghai), PR China from April 25th to 28th 2022. We’re one of the manufacturers



TIME: April 25-28, 2022
Booth No.: No.B67, Hall 6.1
Tel/Fax: 0086-25-52717523 Website:

Recycled PP/PE Compounding Granulation Line

In recent years, as a general resin with high cost performance and wide application, Recycled PP/PE Compounding has been widely used in many fields of industry, agriculture, construction and daily life, and has become a

Extruder Machine 101

Extruder Machine 101

This blog introduces Extruder Machine, including extruder introduction, types and working principle of twin-screw extruder, etc.


PLA Degradable Sheet Production Line

This blog mainly introduces the PLA degradable sheet production line, including the introduction of PLA, its process flow, basic parameters, and advantages.

2021 Chinaplas-08

2021 Chinaplas

“ CHINAPLAS 2021 was proudly concluded on April 16 with a total of 152,134 visitors (149,771 local and 2,363 overseas). 

2020 Plastivision India-04

2020 Plastivision India

Plastivision India will be taking place during 16-20 Jan 2020, which is the largest event of plastic industry held in Mumbai India once every three years.


2019 Chinaplas

Nanjing Cowin Extrusion Machinery Co., Ltd requests the pleasure of your company at Hall 2.2 Booth No.S61 at Chinaplas 2019 trade fair.