Melt fracture / Packaging Film Dual-Lip Air Ring, Exits Adjustable Type, General Dual-Lip Air Ring and Die Head Manufacturing | Chuo Yii Enterprise Co.

/ We have consolidated the blown film key knowledge and techniques which enable us to settle most of the customer's problem from each blown film issue.

Melt fracture

Melt fracture, also known as sharkskin or surface melt fracture, often occurs at the die head and material stage. Here are common checks and solutions:

Die Gap Too Narrow?
Replace with larger gap die inserts to improve flow.

Melt Temperature Too Low?
Increase the temperature of the extruder and die head for better melt flow.

Formulation Issue?
Use a polymer with a wider molecular weight range (e.g., LDPE) instead of one with a narrower range (e.g., LLDPE).

Insufficient Additives?
Increase additives to meet processing requirements and improve film quality.

Output Rate Too High?
Reduce the output rate to prevent excessive strain on the material.

Die Head Material Issue?
Choose the appropriate material for the die head to minimize molten slippage.


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Air ring and Die heads Expert - CHUO YII Enterprise Co.

Based in Taiwan since 1997, CHUO YII Enterprise Co. is an air ring and die head manufacturer. Main products, including Packaging Film Dual-Lip Air Ring, Exits Adjustable Type, General Dual-Lip Air Ring and Die Head, etc. C.Y.'s Air Rings are designed for up to 7-layer blown film extrusion line. Air ring for thickness and output control film, low gauge variation, fast cooling and bubble stability, as well as adjustable for dual lip exits, adjusted handles or 360 degree circle nut turning.

CHUO YII has more than 25 years experience in aluminum casting, and specialized in all kinds of blown film air ring design, processing and manufacturing. The main products are double air duct, high flat film air ring, high and low pressure polyethylene blown film air ring, single and multi-layer die, aluminum alloy sand casting commissioned processing, blown film core components.

C.Y. has been offering customers high-quality air ring and die head since 1997, both with advanced technology and 28 years of experience, C.Y. ensures each customer's demands are met.