Descriptions

Screw elements are the core functional parts mounted onto the shafts inside the barrel of a parallel co-rotating twin-screw extruder. They determine how material is transported, mixed, melted, and pressurized along the extruder's length.

Different functions of different screw elements

Why they matter

The specific type, length, pitch/angle and sequence of screw elements determine the extruder's performance for a given material and process (mixing quality, melting rate, devolatilization efficiency, pressure build-up, output rate). Configuring the screw profile correctly is crucial for optimal results.

Production process

Choose Nickel alloy to make your screw elements

Why to choose Nickel to make screw elements in Lithium Battery

Superior Corrosion Resistance:

Withstands highly corrosive fluorides (e.g., from PVDF binders) much better than standard steels, preventing pitting and degradation.

Enhanced Wear Resistance:

Significantly reduces abrasion from hard ceramic fillers (like Al₂O₃/SiO₂) commonly coated onto separators, extending element life.

High-Temperature Strength:

Maintains structural integrity and dimensional stability under the sustained high processing temperatures required for separator polymers.

Reduced Metal Contamination:

Minimizes metallic wear debris generation, crucial for preventing internal shorts in sensitive lithium-ion batteries.

About Bloom

Bloom(Suzhou) Materials Co., Ltd is mainly focused on wear-resistant and anti-corrosion extruder

accessories for end user. What to do, is to extend their service life, to meet different requirements

of several industries.

Bloom(Suzhou) Materials Co., Ltd ，which located in the beautiful city of Zhangjiagang , Suzhou,China. 
Bloom Company is a technology research and development enterprises which integrats technology research and development, production and trade.It mainly dealing two types of products based on the alloy materials. Spot welding accessories and twin extruder spare parts. 

With independent research and development team, Bloom focuses on technological innovation. It has provided super wear resistance, corrosion resistance, high temperature resistant core parts for many twin screw extruder users both at home and abroad and blending modification of enterprises. With continuous pursuit of technological innovation, we committed to providing customers with high quality products and services. In the global market, Our products are widely used in all fields such as plastics, miners, energy, aviation and etc. High-quality products can be developed according to customer needs combined with the actual working conditions. Whether it is high temperature, high corrosion conditions, or high torque, high strength mechanical needs, Bloom’s products can perform the task excellently. It can achieve excellent performance, stable quality, reasonable price, timely delivery, perfect after-sales.
We will advance with the times with the management idea of cooperation, win-win, integrity and open, to provide customers better products and more efficient service. Share a brilliant tomorrow with you!

Products Scope of Bloom Alloy

Nickel and iron base  Alloy(KCF alloy, Nickel alloy)

Spot Welding Accessories(Electrodes, Cap tips , Guide Pins and so on)
Twin Screw Extruder Spare Parts
Parallel Twin Screw Extruder Parts 
Conical Screw Extruder Parts

Other Precision Alloy Materials and Parts

Service  of Bloom

Alloy Material  Self Production

Non-Standard Product Reseach and Test

Precision Machinning

Spot Welding Parts offering

Twin Screw Extruder Spare Parts Supply

Logistics Service

After sales service

Advantages of Bloom 

Experienced Engineers in Alloy Businss
More then 20 years experience in alloy materials offering

High Quality Control System

Authorized Certificates

Guaranteed Delivery and Quality

More then 20+Countries customers trust.

Bloom is engaged in offering special and high quality performance alloy and parts to the whole world, Choose Bloom, Choose a sucessful business partener!