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What is the difference between an injection bottle and a blow bottle?

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What is the difference between an injection bottle and a blow bottle?

2019-07-22
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First of all, it can be seen from the surface that their processing technology is different, one is the blow molding process and the other is the injection molding process. Both of these processes require the mold to be fabricated before the next step.


The main features of injection molding: By designing the pouring channel in the mold, the molten material is filled into the entire cavity. Usually, the structure of injection molded products is complicated, and the raw materials must be suitable for injection molding processes, such as PE.


The main features of blow molding: rapid inflation of plastic preforms, the clamping part of the blow mold can be molded according to the mold requirements (similar to the injection mold), after the gas is introduced, the remaining part expands under pressure, and the material will adhere to the cavity. On the wall, the desired shape is obtained and the pattern on the cavity wall can be transferred to the material. PET bottles commonly found on the market are made by blow molding.



Secondly, due to the complicated process and high cost of the injection molding bottle, the price of the mold is relatively high. Because of its simple processing method and low cost, blown bottles have lower mold prices and product prices.


Finally, injection bottles are commonly used in medical, chemical, agricultural, industrial and other fields. Blow molded bottles are commonly used in food, catering, hotels, beverages and other industries. Such as: plastic reagent bottles, pharmaceutical plastic bottles, pesticide plastic bottles, etc. are injection molded. PET plastic bottles, food plastic drums, plastic beer bottles, etc. can be blown.


The above is the difference between the health care product plastic bottle small series for you.

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