How to Solve Surface Defects of Plastic Appearance Parts of Medical Devices

A lagging product features:

The encapsulated product has good temperature resistance, so the product can be used in various environments, and the soft rubber has good flexibility. It is often used in sealing and protective parts, etc. In addition, the soft rubber has good tear resistance and can be used in Maternal and child products and household wear.

Second, the appearance of the encapsulated products often appears poor

Product burrs

air bubbles

dirty surface

surface scratches

The glue is not strong

uneven color

material shortage

surface shrinkage

dirty surface

Three preventive measures:

The control of any process should be based on prevention, analyze the failure mode in the process according to the flow chart, make a reasonable control plan and standard operation with reference to the failure mode, and train relevant positions to ensure that the operation is in place, which can greatly prevent problems. point happens.

Soft rubber is prone to poor surface appearance during the production process, and there are relatively many production processes. To prevent the occurrence of problems, we need to start from the following points:

1. Ensure a suitable storage environment and the preservation method of raw materials after disassembly and assembly, and prevent material contamination

2. Strictly refer to the physical property table to do the baking action of the material, and actually check whether it meets the baking requirements of the material

3. For the raw materials that need to be mixed with toner, the proportion of the toner should be well controlled (at the same time, the toner must also have strict storage and unpacking storage methods)

4. Optimization in the early stage of product design to prevent appearance defects

In the early stage of the design, try to avoid the occurrence of thin walls of the product (it is easy to cause trapped air in the thin part);

Design to prevent excessive sharp corners;

The product should try to design an art groove to facilitate the pre-pressing and sealing of the two-shot soft glue.