In the process of child safety seat, the main craft customers are divided into two types, namely injection molding and blow molding. What is the difference between these two processes? Please see below:
1, material
There are two main types of safety seats currently on the market:
Injection molding: referred to as PP.
Blow molding: referred to as HDPE5502.
2, structure
Injection molding:
1) The structure of the injection molded parts is relatively complicated.
(2) Applicable to products with more complicated structures.
(3) Since the injection molded parts have only a single layer of wall thickness, the strength is generally insufficient, so the iron parts are generally added to the injection molded parts to increase the strength of the seat.
Blow molding:
(1) The blow molding structure is relatively simple.
(2) Applicable to products with relatively simple structure.
(3) The blow molding is double-walled and strong, and can withstand the strength of the seat during impact.
3, the process
Injection molding: Injection molding uses an injection molding machine and a mold to press a plastic melt into a mold.
Blow molding: Blow molding is an extruder that extrudes a plastic melt into a hollow and then puts it on a mold, and expands the hollow melt with compressed air.
4, advantages and disadvantages
Injection molding:
Advantages: (1) The surface is beautiful.
(2) There are many seat functions.
Disadvantages: (1) the seat is relatively bulky
(2) complicated structure
(3) High cost
Blow molding:
Advantages: (1) Simple structure
(2) The seat is lighter
(3) cost-effective
(4) The plastic is hollow, and the energy absorption effect is better.
Disadvantages: (1) The function is relatively simple
(2) The appearance of the surface is not very beautiful, and the product grade looks a bit low.
application: viation,automotive, motorbike, bicycle, automatic equipment, household appliance, medical device ,toy, telecommunication,computer, instrument and meter,furniture, electric tools,mold and other industries
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