Blow molding machine and blow molding machine are common in the industry of plastic production equipment, large market coverage, there are many similar manufacturers, so often people do not know what they need blow molding machine or blow molding machine, resulting in a lot of people will find the wrong manufacturers, a consultation to know not to produce. This article will introduce the difference between blow molding machine and bottle blowing machine in many aspects. Let's understand together.

Blow molding machine is a kind of plastic processing equipment. After the liquid plastic is sprayed out, the plastic body is blown into a mold cavity of a certain shape by using the wind blown out of the machine to make products. There are two kinds of extrusion blow molding machines and injection blow molding machines commonly used in plastic blow molding machines. The basic principles of the two kinds of equipment are basically similar. The resin is first added into the extruder, melted and then blown to obtain the finished product, the difference is that the extrusion blow molding machine process is extrusion-stretch-blow molding, and the injection blow molding machine process is injection-stretch-blow molding.

The blowing material of the blow molding machine can be selected from polyethylene, polyvinyl chloride, polypropylene, polystyrene, linear polyester, polycarbonate, polyamide, cellulose acetate and polyacetal resin. The production capacity can be from several liters to thousands of liters, and the high-density polyethylene products produced can be widely used in food, chemical and liquid processing packaging.

The production of polyvinyl chloride because of its high transparency and air tightness in the use of cosmetics and washing industry more, in food containers and gas beverage packaging is also used more.

The advantage of the blow molding machine is that the plastic container processed by the blow molding machine has a high thickness, corrosion resistance and wear resistance, and can replace a part of the ceramic container. In addition, the cost of the container of the blow molding product is low, the processing difficulty is low, and the efficiency is high.

Bottle blowing machine, such as the name is a machine for producing bottles, which softens plastic particles into liquid and then blows them into different bottle machines through the prepared bottle blank melt. Common bottle blowing machines include extrusion bottle blowing machine, injection bottle blowing machine and special structure bottle blowing machine.

The blowing process is also divided into one-step blowing method and two-step blowing method. Most common use two-step blowing method. The principle is to preheat and soften the bottle embryo by infrared high-temperature lamp, prevent the preheated bottle embryo from being put into the finished mold, inflate it with high pressure, and blow it into the required shape. The process of blowing and drawing is a two-way stretching, so in this process, in order to increase the mechanical properties of the bottle wall, increase the tensile, tensile and impact strength, the PET chain is extended and arranged in both directions. This stretching is also limited, can not be over-stretched, need to control the stretch blow-up ratio.

The price of the container produced by the bottle blowing machine is linked and the safety is high, so it is used to replace the glass container in the beverage, medicine, cosmetics, food processing and other industries.

The difference between blow molding machine and bottle blowing machine

1. The principles are different. The above small and medium-sized editors want to write and introduce the working principles of the two kinds of mechanical equipment. It can be seen that there are certain differences in the plastic production principles between the two. The production process of the blow molding machine is extrusion/injection-stretching-blow molding, and the blow molding machine is one-step blowing method and two-step blowing method.

2. Different products are produced. Bottle blowing machine refers to a bottle blowing machine. Bottle blowing machine is convenient and convenient to produce and has a large molding capacity. It mainly uses tubular blank or injection molding into a mold to blow up and mold the tube wall into a bottle shape. The blow molding machine needs the plastic to be melted in the screw extruder and quantitatively extruded, formed by the mouth film, and then cooled to obtain complete products, which are more used to produce large barrels or warning columns, trays, floating barrels and other irregular blow molding products.

3, different characteristics, blow molding machine has high thickness corrosion resistance, wear resistance and other characteristics, the die head also adopts chrome plated screw mandrel structure to make the discharge more equal and smooth, better complete blown film, complex film blowing machine structure makes the output gas more uniform, lifting unit also adopts square frame structure, can be adjusted according to production requirements.