A bopp film production extruder uniform thickness extruder

A technology with uniform thickness and extruder, applied in the field of BOPP film production, can solve the problems of incomplete and uneven plasticization of materials, affecting product quality, etc., and achieve the effect of increasing quality, uniform plasticization, and saving maintenance time and cost

CN111347646BActive Publication Date: 2021-09-21贵州金田新材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-09-21

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Abstract

The invention relates to the technical field of BOPP film production, in particular to an extruder with uniform extrusion thickness for BOPP film production. The discharge end of the first extrusion device is provided with a discharge pipe, and a discharge pipe is provided below the discharge pipe. There is a feed pipe connected to the feed pipe in the second extrusion device, a feed cooling mechanism is provided under the feed pipe in the second extrusion device, and a disc is provided at the discharge end of the second extrusion device filter structure. The invention is novel in design, adopts two extruding equipments connected in series, first semi-melts the material, then completely melts and plasticizes the semi-molten material, makes the plasticization of the material more uniform, satisfies difficult-to-process materials, and adopts the feeding cooling mechanism for cooling treatment , to avoid the problem that the semi-melt material is prematurely heated and adhered to the inner wall of the feed hopper to cause blockage. Through the filtering effect of the disc filter structure, the problem that the impurities in the melt have a serious impact on the product quality is solved, and the product quality is reduced. The defective rate saves the cost waste caused by rework.
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Description

technical field

[0001] The invention relates to the technical field of BOPP film production, in particular to an extruder with uniform extrusion thickness for BOPP film production. Background technique

[0002] BOPP film is made of isotactic polypropylene as the main raw material. In the preparation process, the extruder is one of the important equipment. Polypropylene particles enter the extruder at a certain temperature and pressure under the action of the shear force of the screw. melt, extrude.

[0003] However, the current extruders on the market are all independent. For some difficult-to-process materials, the problem of incomplete and uneven plasticization of the material may occur. At the same time, the material may contain foreign matter such as impurities, gel particles, and fish eyes after hot melting. , seriously affecting the quality of the product. Therefore, those skilled in the art provide an extruder for producing BOPP film with uniform extrusion thickness...

Examples

Embodiment Construction

[0021] see Figure 1~5 , in the embodiment of the present invention, a BOPP film production extrusion extruder with uniform thickness includes a base plate 10, an upper support plate 4 is arranged above the base plate 10, and four wires in the form of The guide posts 5 distributed in a rectangle are supported and fixed, and the upper surface of the bottom plate 10 is provided with a second extrusion device 7, the second extrusion device 7 includes an outer tube 12, and a melt tube 13 is provided through the inside of the outer tube 12, and the outer tube One end of 12 is communicated with a feed pipe 17, the surface of the melt pipe 13 is wound with a heating pipe 19, and the inside of the melt pipe 13 is provided with a screw extending to the outside of the feed pipe 17, and the top of the feed pipe 17 is provided with Feed hopper 14, and one end of feed pipe 17 is provided with reduction gear box 16, and one side of reduction gear box 16 is connected with the drive shaft of ...