sticky film encountered in catheter tipping

Reasons and troubleshooting methods for sticking to the mold during tip molding:

1. The cooling time is too short and the tip has not yet solidified. Uneven cooling of the tip after molding may also result in a sticky film-like surface in some areas.  

2. Insufficient slope of the inner cavity of the mold, its demolding slope should be increased.  

3. Roughness inside the tip forming mold, the surface may not be smooth enough, or there is damage, contamination, etc., which may transfer the defects to the tip of the catheter during the molding process  

4. Excessive heating: If the catheter material is heated to too high a temperature during the molding process, it may begin to decompose or melt, resulting in an uneven or sticky surface and the formation of mucous film-like defects.
5.
6.Improper operation: improper use of the molding machine by the operator, such as inaccurate control of pressure and time, can also affect the quality of the molding.
 
Solution Measures:
Optimize temperature control: Check and optimize the heating system to ensure that the conduit is heated to the proper molding temperature and avoid overheating.

Improve cooling process: Ensure that the molded catheter can be cooled evenly and quickly to solidify the molded shape and reduce surface defects.

Maintenance of molding tools: Regularly inspect and maintain molding dies and tools to ensure that their surfaces are smooth and undamaged to prevent adhesive film problems.

Operator Training: Provide adequate operator training to operators to ensure proper use of the molding machine.

Regular Cleaning and Inspection of Equipment: Keep equipment clean and well-maintained to prevent dust, dirt, or old material residue from causing adhesive film problems.

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