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Spiral Drinking Straw Making Machine Structural Differences

Hangzhou Newtech Machinery Co.,Ltd | Updated: Jul 07, 2017

Spiral Drinking Straw Making Machine Structural differences

The difference between the plastic sheet and the structure of the other extruder is that there is an exhaust hole above the middle of the barrel, and the screw is composed of two conventional screws. The front end of the exhaust port is called the first-order screw, which is the same as the ordinary rod. The sub-feeding section, the plasticized section and the equalization section; the exhaust port rear pole bar The section is called a second-order screw, which consists of a vent section, a second plasticizing section and a second homogenizing section. Its structure see

  I-hopper .2-fan read .3- Na 11, 4 exhaust n

Plastic sheet machine work: raw materials into the first-order screw, after the feeding section, plasticized section and the homogenization section, the basic to plastic. During the extrusion process, the moisture, air, volatiles, etc. in the raw material escapes in the extrusion kneading process. As the exhaust port communicates with the vacuum pump line, the melt is squeezed to the exhaust port The pressure is plummeted, so the mixed gas in the melt is withdrawn after the exhaust port. The melt is rotated by a rotating screw to the second-order screw, which is further plasticized and then extruded into a molded mold under constant pressure, equivalent and relatively stable temperature. According to the requirements of plastic products formula, the mixing of raw materials by Jane into the plastic sheet machine barrel. With the rotation of the screw, the material is forced to push the thread in front of the machine. As the barrel in front of a filter, shunt and forming mold resistance, coupled with the screw between the volume of the gradual reduction of the thread to push forward the raw materials by the great pressure, while the raw material and by the barrel of heating, raw materials by Squeeze, dream cut, stirring effect, and the barrel, the friction between the screw and the friction between the raw material molecules, will produce a certain amount of heat.As a result, the raw material in the barrel temperature gradually increased its physical state also Gradually from the glassy state into a high elastic state, and finally become a drilling state, to achieve full plasticization. As the screw has been kept in a steady rotation, then the plasticized uniform melt equal pressure, the same amount from the molding die mouth extrusion, as a certain shape of the plastic products. And then by cooling the stereotypes, that is, to complete the extrusion molding products work.

2. What is a twin-screw plastic sheet machine?

In the plastic sheet machine barrel has two screw meshing work together to complete the mandatory push forward plastic transport and plastic work, this plastic sheet machine called double screw plastic sheet machine.

The difference between the plastic sheet and the structure of the other extruder is that there is an exhaust hole above the middle of the barrel, and the screw is composed of two conventional screws. The front end of the exhaust port is called the first-order screw, which is the same as the ordinary rod. The sub-feeding section, the plasticized section and the equalization section; the exhaust port rear pole bar The section is called a second-order screw, which consists of a vent section, a second plasticizing section and a second homogenizing section.

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 Development trend of sheet machine

With the growing domestic demand, packaging plastic thermoforming sheet use is also more and more widely, the amount is increasing year by year, the prospects are good. With the country's emphasis on environmental protection, to adapt to the production of "environmentally friendly degradable sheet production line" has been able to successfully supply the market various types of "degradable sheet." The use of "nano-plastic" manufacturing "nano-sheet" has become another focus of attention, has become a new manufacturer "selling point." To improve the shelf life of food and shelf life, with "high barrier properties of the sheet" has become the production enterprises competing to develop the goal.

The method of producing plastic packaging sheet is generally used for the production of PVC, PVDC and other sheet; the other is the extrusion method for the production of BOPS, EPS, PET, PP, HIPS and other sheet. The sheets referred to herein mainly refer to sheets for thermoformed packaging articles produced by the "extruder-T-head-three-roll calender-coiling" process. Domestic production of sheet metal industry with the development of packaging sheet has also introduced advanced configuration and new machines. Over the past decade, sheet production and sheet metal manufacturing enterprises to cooperate with each other, and the introduction of plastic sheet industry has also improved the overall level of development. New sheet processing technology, the new raw and auxiliary materials in the configuration of advanced equipment to get full play.


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