How to Injection Transparent spice container

Due to the high light transmittance of transparent spice container, the surface quality of plastic products must be strict, and there must be no defects such as pores, whitening, black spots, discoloration, poor gloss, etc. Therefore, the entire injection molding process requires raw materials, equipment, molds, and even The design of products requires great attention and strict or even special requirements.

PRODUCT WEIGHT:40g PRODUCT SIZE:72.4mmx72.4mmx75mm

PRODUCT MATERIAL:SAN  MOULD CAVITIES:  4 cavities

 MOULD INJECTION SYSTEM : Yudo valve gate

CYCLE TIME: 20s INJECTION MACHINE: 350T servo motor injection machine

Common problems during injection molding process

1.Raw materials

Due to the presence of any impurities in the plastic, the preparation and drying of the material may affect the transparency of the spice container. Therefore, it is necessary to pay attention to storage conditions to ensure the cleanliness of raw materials.

2.Injection molding machine

The injection molding machine should be kept clean and regularly cleaned to avoid the generation of bubbles and impurities.

3.Mold product design

• The wall thickness should be as uniform as possible, and the demolding angle should be large enough;
• Transparent plastic is prone to overflow, so a good mold exhaust design is necessary to avoid the formation of bubbles or air marks inside the product due to the gas in the plastic.
• The surface of the mold should be smooth and low in roughness

4.Injection molding process

• Injection molded transparent boxes usually have high temperature requirements, and it is necessary to ensure that the temperature of the injection molding machine is controlled properly. Overheating or overcooling can lead to a decrease in the transparency of the plastic or the appearance of defects.
• The injection speed can affect the filling of plastic. The appropriate injection speed should be selected based on the type of plastic and the design of the mold.
• During the injection molding process, it is necessary to maintain appropriate injection pressure and time to ensure that the plastic fully fills the mold.
• Ensure that the temperature of all parts of the injection molding machine is within the normal range, especially the temperature of the material barrel and mold.
• Excessive screw speed and back pressure can lead to excessive heating and shear degradation of the plastic, while too low may prevent the plastic from fully filling the mold.