As an important component of plastic processing equipment, extrusion blow molding machines have a series of advantages and disadvantages. The following is a detailed analysis of its advantages and disadvantages:
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High production efficiency:
Extrusion blow molding machine can quickly produce a large number of hollow plastic products, such as bottles, barrels, cans, etc., through continuous extrusion and blow molding.
The high degree of automation reduces manual operations and improves production efficiency.
Wide selection of raw materials:
Extrusion blow molding machines can use various plastic raw materials, such as polyethylene (PE), polypropylene (PP), etc., with a wide range of raw material sources and relatively low costs.
Good product performance:
Extrusion blow molded products exhibit excellent strain resistance, bending, impact and other properties, and have a good service life.
The product has a uniform wall thickness and a smooth appearance, which can meet the usage requirements without the need for secondary processing.
Low equipment cost:
Compared with other plastic molding equipment, the equipment cost of extrusion blow molding machine is relatively low, which is suitable for investment by small and medium-sized enterprises.
Easy to operate:
The operation of extrusion blow molding machine is relatively simple and easy to get started, reducing the skill requirements for operators.
High scrap rate:
Due to various factors affecting the extrusion blow molding process, such as raw material quality, mold design, process parameters, etc., the scrap rate is relatively high.
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The difficulty of recycling and utilizing waste materials increases production costs.
Restricted thickness control of products:
The thickness of extruded blow molded products is limited by mold design and process parameters, making it difficult to achieve precise control.
Uneven wall thickness of the product may lead to performance degradation and affect its service life.
High mold cost:
The extrusion blow molding machine requires the use of two molds (injection molding die and blow molding die), and the design and manufacturing costs of the molds are relatively high.
The positioning tolerance level of the mold is relatively high, which increases the difficulty and cost of mold processing.
The shape of the production container is limited:
Extrusion blow molding machines are limited in producing containers with complex shapes, such as those with handles.
This limits the application scope of extrusion blow molding machines in certain fields.
High requirements for raw material quality:
Although extrusion blow molding machines can use various plastic raw materials, they have high requirements for the quality of the raw materials.
Impurities and moisture in raw materials may have adverse effects on the quality and performance of products.
In summary, extrusion blow molding machines have broad application prospects in the field of plastic processing, but there are also some shortcomings. In practical applications, it is necessary to select and adjust according to specific production needs and equipment performance, in order to fully leverage its advantages and overcome its disadvantages.
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