2 thoughts on “What are the forms of hollow blowing molding? What are the characteristics of each?”
Saul
The earliest application of blowing plastic process was during World War II, when it was mainly used to produce low -density polyethylene small plastic bottles. Later, with the birth of high -density polyethylene and the development of the molding process of blow molding machines, the blowing technology was widely used. As early as in the last century, the blowing industry reached the scale of billions of dollars in the United States.
This briefing process can be divided into the following 4 methods according to the working principle of blowing plastic machine: n n n n n n n n n n n n n n n n n n n n n n n n n R n1: Squeeze out the blowing plastic process: The current three -quarters of the blow molding products are manufactured by the extrusion and blowing process. There are two types of blowing plastic. Continuous squeeze blowing plastic is suitable for fast production of small products. Use the extruder to continuously manufacture the type of blanks. Cooling, top -out and other operations. Intermittently extruding blow molding is applicable to the production of large -scale blow -plastic products. It is commonly used in the production of polyethylene large containers with high molecular weight.
2: injection blow molding process: injection blowing plastic is obtained from injection molding. The advantage of injection blow molding is that the wall thickness is uniform, the weight tolerance is small, the post -processing is small, and the waste edges are small. Production of large -scale small fine products, such as: pharmaceutical bottle, cosmetics bottle, etc..
3: Stretching and blowing plastic process: In the two ways, the injection is used to stretch the blasting with the type of injection law; Blowing plastic process: Multi -layer blowstorm is to make multi -layer composite billets with several plastics in appropriate methods, and then forming with general blow molding process. Layer blowstration is to introduce a layer or layer with low osmosis with low permeability. Sexual polymers to improve the solvent resistance or breathability of the product.
The above 4 blow molding processes are the most commonly used methods. Polyethylene, polypropylene, polyester, etc.
The earliest application of blowing plastic process was during World War II, when it was mainly used to produce low -density polyethylene small plastic bottles. Later, with the birth of high -density polyethylene and the development of the molding process of blow molding machines, the blowing technology was widely used. As early as in the last century, the blowing industry reached the scale of billions of dollars in the United States.
This briefing process can be divided into the following 4 methods according to the working principle of blowing plastic machine:
n n n n n n n n n n n n n n n n n n n n n n n n n R n1: Squeeze out the blowing plastic process:
The current three -quarters of the blow molding products are manufactured by the extrusion and blowing process. There are two types of blowing plastic. Continuous squeeze blowing plastic is suitable for fast production of small products. Use the extruder to continuously manufacture the type of blanks. Cooling, top -out and other operations. Intermittently extruding blow molding is applicable to the production of large -scale blow -plastic products. It is commonly used in the production of polyethylene large containers with high molecular weight.
2: injection blow molding process:
injection blowing plastic is obtained from injection molding. The advantage of injection blow molding is that the wall thickness is uniform, the weight tolerance is small, the post -processing is small, and the waste edges are small. Production of large -scale small fine products, such as: pharmaceutical bottle, cosmetics bottle, etc..
3: Stretching and blowing plastic process:
In the two ways, the injection is used to stretch the blasting with the type of injection law; Blowing plastic process:
Multi -layer blowstorm is to make multi -layer composite billets with several plastics in appropriate methods, and then forming with general blow molding process. Layer blowstration is to introduce a layer or layer with low osmosis with low permeability. Sexual polymers to improve the solvent resistance or breathability of the product.
The above 4 blow molding processes are the most commonly used methods. Polyethylene, polypropylene, polyester, etc.
Multi -layer blowstration, suppression blowing plastic, dipping plastic, foaming plastic, three -dimensional blowing plastic