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What is the difference between plastic blow molding machine and extrusion blow molding machine?
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What is the difference between plastic blow molding machine and extrusion blow molding machine?

Views: 10     Author: Site Editor     Publish Time: 2022-03-24      Origin: Site

What is the difference between plastic blow molding machine and extrusion blow molding machine?

Blow molding machines and bottle blowing machines are common plastic manufacturing equipment in the industry. They have a large market coverage and have many similarities. Many times they cannot tell whether they need a blow molding machine or a bottle blowing machine, so many people will find the wrong manufacturer. business, only after consulting did I know that it was not manufactured. Let's take a look at the difference between a blow molding machine and a blow molding machine.

Fully automatic blow molding machine factory talk about blow molding machine

Blow molding machine is a kind of plastic machining equipment. After spraying liquid plastic, the wind blowing from the machine blows the plastic into a mold cavity of a specific shape. There are two commonly used extrusion blow molding machines and injection blow molding machines for products and plastic blow molding machines. The basic principles of both devices are basically similar. All resins are first added to the extruder and melted to obtain the finished product. The difference is extrusion.

Blow molding materials can be selected from polyethylene, polyvinyl chloride, polypropylene, polystyrene, linear polyester, polycarbonate, polyamide, cellulose acetate and polyacetal resin. The volume of manufactured products can be from several liters to several thousand liters, and the manufactured high-density polyethylene products can be widely used in food, chemical, and liquid packaging.

The manufactured polyvinyl chloride has high transparency and confidentiality, so the fully automatic blow molding machine factory is considered to be mostly used in the cosmetic and laundry industries, as well as in food containers and gas beverage packaging.

The fully automatic blow molding machine factory believes that the advantage is the use of processed plastic containers, which have high thickness, high corrosion resistance and high wear resistance, and can replace some ceramic containers. The container of blow molding products has low cost, difficult processing and high efficiency.


Talk about extrusion blow molding machine

The extrusion blow molding machine is a machine for making bottles, softening plastic particles into liquid, and then making other bottle machines by making a good embryo solvent. Typical bottle blowing machines include extrusion blow molding machines, injection blow molding machines and special structure blow molding machines. Three kinds of machines.

In the blowing process, it is also divided into the first-stage blowing method and the second-stage blowing method, most of which use the second-stage blowing method. The principle is to preheat the bottle embryo through an infrared high temperature lamp to soften it. It is to prevent the preheated bottle embryo from being put into the prepared mold, expand it under high pressure, and blow it to the desired shape. The blowing process is two-way stretching, so in this process, in order to improve the mechanical properties of the bottle wall and improve the tensile, tensile and impact strength, the PET chains are extended and arranged in two directions. There is also a limit to this stretching, and it cannot be overstretched, and the stretch-to-expansion ratio must be controlled.

The price link of the containers made by the blow molding machine is high, so the beverage, pharmaceutical, cosmetic, food processing and other industries often use glass containers instead of glass containers.

Fully automatic blow molding machine factory shares the difference between blow molding machine and blow molding machine

1. The principle is different. The editor above would like to introduce the working principles of the two types of mechanical equipment, and to introduce the differences in the two types of plastic manufacturing principles that can be meditated. The molding machine manufacturing process includes extrusion/injection-stretch-blow molding.

2. Manufactured items are different. The blow molding machine refers to the machine that blows the bottle. The bottle blowing machine is easy to manufacture and has a large amount of molding. It is mainly injected into the tubular blank or mold to expand or form the tube wall into the shape of a bottle. After the plastic machine melts the plastic in the screw extruder, it can be quantitatively extruded, molded through the mouth film, and then the finished product is obtained by cooling. The automatic blow molding machine factory believes that it is more commonly used to manufacture large tubes or warning columns, trays, floats, etc. A variety of irregular blow molding products.

3. Features are different. The molding machine has high thickness and corrosion resistance. The mold also adopts a chrome screw inner shaft structure, which makes the loading and unloading materials more uniform, and the blown film is better completed. The complex blown film structure makes the output gas more uniform, and the lifting unit can also use a square shape. The frame structure is adjusted according to manufacturing needs.

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