High-quality injection molding machine screw manufacturing · Customized according to process

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StarFriend Screw focuses on the manufacturing of high-quality injection molding machine screws, customizing exclusive screws based on raw material characteristics, equipment parameters and injection molding processes. The truly economical choice is not only the lower purchase price, but also the comprehensive performance of plasticization stability, product quality, production loss and service life.

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INJECTION SCREW KNOWLEDGE

Injection Screw Knowledge

A systematic guide to injection screw structure, compression ratio, L/D ratio, material selection, wear mechanisms and screw selection.

What high-intensity conditions are suitable for a whole-of-the-art structure

What high-intensity conditions are suitable for a whole-of-the-art structure

The whole or reduced front-end structure of the connector reduces the screwdriver risk and increases the rigidity of certain conditions. The working principles, selection condition…

Advantages and maintenance focus of the three-part dereverse ring

Advantages and maintenance focus of the three-part dereverse ring

The three-part structure separates the flow, slide and de-exposure and facilitates the selection of materials and maintenance for each component. The three-part reverse ring advant…

What happens when there's too much or too little gap between the reversible ring and the material cylinder?

What happens when there's too much or too little gap between the reversible ring and the material cylinder?

Combining the reversible ring diameter with the inner diameter of the material cylinder will ensure both a free slide and a limit on a melting leak. The principles of work, selecti…

How does the retroring move between plasticization and injection?

How does the retroring move between plasticization and injection?

The reversible ring keeps the flowway open when the screw is rotated and is closed by relative shift and pressure differentials when injected in front of the screw. The working pri…

Which parts make up the screw head and what role each plays.

Which parts make up the screw head and what role each plays.

The common screw head component consists of screw head, anti-reverse ring and pushring ring, which is responsible for circulation, sealing and transmission of the injection load. T…

How does a screw compression work compared to changing the cooler temperature?

How does a screw compression work compared to changing the cooler temperature?

Changing the compression ratio will change the ratio of mechanical heat, so the temperature of the old screws cannot be replicated mechanically. From the working principles, select…

Why is it easier to compress the ratio with the back pressure? Hot

Why is it easier to compress the ratio with the back pressure? Hot

Compression is a hardware geometry and back pressure is a process load, both of which increase material pressure and cut history. The working principles, selection conditions, comm…

What's the balance between melting and fibre protection?

What's the balance between melting and fibre protection?

Particle friction, melting fluids and corrosive properties have changed with the addition of the fiber, and the compression design needs to be balanced with melting and protection.…

Compression and cut control for PC and PMMA transparency

Compression and cut control for PC and PMMA transparency

Transparent products leave bubbles, black dots, yellow changes, silver silks and melting temperatures, so the compression process must be clean and stable. From the principles of w…

Why can't PP and PE screw compression be fully universal?

Why can't PP and PE screw compression be fully universal?

Both PP and PE are polyolefins, but there are differences in melting points, viscosity, density, crystal and card ranges. The working principles, selection conditions, common risks…

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SCREW & BARREL PRODUCTS

Injection molding screw product rolling display

According to the resin material, filling ratio, equipment model and product requirements, select a more suitable screw and barrel solution.