Long core pulling mold, GPPS, 2-layer core pulling upto 230-260mm long, high gloss clear finish.

Creating a mold with a very long core presents several technical difficulties, both in manufacturing and molding:

1. Core Strength and Stability: A very long core needs to be strong and stable. Otherwise, it can bend or break.
2. Ejection Problems: Ejecting a part with a long core is challenging. The increased friction raises the risk of damage.
3. Cooling and Heating: Maintaining uniform temperature throughout a long core is difficult. Uneven cooling causes warping or defects.
4. Alignment Issues: Ensuring perfect core alignment during mold closing and opening is critical. Misalignment leads to defects and wear.
5. Complex Mold Design: Designing molds with long cores requires precise engineering. Complex mechanisms are often needed for insertion and removal.
6. Material Flow: Ensuring even material flow around a long core is challenging. Uneven flow causes air pockets and filling issues.
7. Tooling and Manufacturing Costs: Producing molds with long cores requires specialized equipment. This increases manufacturing complexity and costs.

Addressing these challenges involves using high-quality materials and advanced engineering techniques. Precise manufacturing processes ensure effective long core functionality.