What problems should be paid attention to in the process conditions of blow molding? ——Kunshan Fulong Plastic Hardware Co., Ltd.

The intention of the adjustment of the process conditions is to make the product wall thickness as uniform as possible and the product weight as small as possible (reduce material consumption) on the basis of satisfying the requirements of the small wall thickness of the product. A reasonable way to set process parameters is to combine experience with numerical analysis technology. For example, children's blow molding tables and chairs are also completed by blow molding.

1. Input the parameters that affect the distribution of the parison wall thickness at each stage;

2. Use manual experience to adjust the input parameters, and repeat the process of ① to ③ to ensure that the wall thickness of each part of the product is reduced as much as possible under the premise of reaching a small wall thickness.

3. Use the established computer models to simulate blow molds, blanking parisons, clamping plates, etc.;

4. Analyze and compare the effects of multiple process plans, and finally determine the optimized process parameters. Stretch blow molding, also known as biaxially oriented blow molding, is a method of axially stretching the parison by mechanical means and radially inflating (stretching) the parison with compressed air to form packaging containers under the condition of high elasticity of the polymer. . There are one-step and two-step methods for stretch blow molding.

5. Analyze the obtained simulation effect, and show which parts of the wall thickness do not meet the requirements through computer simulation, and which parts are too thick;