Manufacturing method of film made from inorganic ore powder by casting method

A technology of inorganic mineral powder and a manufacturing method, which is applied in the field of film manufacturing, can solve the problems that the melting point cannot be consistent, the finished product is easy to remove powder, etc., and achieves the effects of improving temperature resistance, weakening impact resistance and good dispersion.

Inactive Publication Date: 2017-12-22
ZHEJIANG SHANLIAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of purpose of the present invention is to provide a kind of thin film that is manufactured by casting method by inorganic mineral powder, effectively utilize the characteristic of the composition in inorganic mineral powder, and coordinate PE and polypropylene, improve The degradation ability of polyethylene film improves the stren

Method used

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  • Manufacturing method of film made from inorganic ore powder by casting method
  • Manufacturing method of film made from inorganic ore powder by casting method

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Embodiment 1

[0026] The core of the invention is to disclose a manufacturing method of a thin film made of inorganic mineral powder by casting method, so as to improve the environmental performance of the thin film and reduce the production cost of the thin film. In addition, the examples shown below do not limit the content of the invention described in the claims in any way. In addition, all the contents of the configurations shown in the following embodiments are not limited to be essential to the solution of the invention described in the claims.

[0027] A kind of manufacture method of the thin film that is manufactured by casting method by inorganic mineral powder, it is characterized in that, comprises the following steps:

[0028] Step A: Weigh each raw material: add 56%-85% by weight of inorganic mineral powder, 25%-35% by weight of resin and 3%-5% of additives into the mixer, mix for 20 to 25 minutes, and mix Machine speed is 100-130r / min;

[0029] Step B: Granulation: When the...

Embodiment 2

[0039] The invention also discloses a method for manufacturing an environmentally friendly agricultural film made of inorganic mineral powder by tape casting, which includes the following steps:

[0040] Step A: Weigh each raw material: add 65% by weight of inorganic mineral powder, 7% by weight of polypropylene, 25% by weight of low-density polyethylene, and 3% of additives into the mixer, and mix for 20 to 25 minutes , the speed of the mixer is 105-115r / min;

[0041] Step B: Granulation: When the screw rotates at high speed, the mixture obtained in step A in the feeder is pushed to the machine head, melted and kneaded at the temperature of 180°C to 190°C in the extruder, the material is melted rapidly, extruded After being discharged, it is granulated at a high speed through the knife edge to make granular materials;

[0042] Step C: After the granulation is completed, vacuum dehydration is carried out under the action of the vacuum pump, conveyed by the screw under strong pr...

Embodiment 3

[0047] The invention also discloses a manufacturing method of a building material packaging film manufactured by casting method of inorganic mineral powder, comprising the following steps:

[0048] Step A: Weigh each raw material: add 71% by weight of inorganic mineral powder, 5% by weight of polypropylene, 20% by weight of medium density polyethylene, and 4% of additives into the mixer, and mix for 20 to 25 minutes , the speed of the mixer is 110-115r / min;

[0049] Step B: Granulation: When the screw rotates at high speed, the mixture obtained in step A in the feeder is pushed to the machine head, and melted and kneaded at the temperature of 190°C to 210°C in the extruder, and the material is melted rapidly and extruded After being discharged, it is granulated at a high speed through the knife edge to make granular materials;

[0050] Step C: After the granulation is completed, vacuum dehydration is carried out under the action of the vacuum pump, conveyed by the screw under...

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Abstract

The invention discloses a manufacturing method of a film made from inorganic ore powder by a casting method. The method comprises the following steps of sequentially adding inorganic ore powder, resin and auxiliary agents into a mixing machine; pushing a mixture in a feeding device to a machine head position by a screw rod during high-speed rotation; performing fusion blending so that the materials are fast molten; after the extrusion, performing high-speed particle cutting through a cutting edge for making particular materials; after the particle cutting is completed, performing vacuum dewatering under the effect of the vacuum pump; performing strong pressure conveyance through the screw rod; performing casting; melting the raw materials; then, performing extrusion by a double-screw-rod vacuum pump; next, flowing out the materials through a seam formed at the front end of a mold head to form the film; after the materials leave away the mold head, passing melt through a short gap to reach a low-temperature casting roller surface for sharp cooling shaping; performing longitudinal and transverse stretching to form a bidirectional film. The method provided by the invention solves the problems that in the prior art, polypropylene is added into the recipe, the film is produced by a film blowing method; the dissolving point cannot reach the consistency; bottle necks can occur in the production process, so that the produced finished product can easily generate powder falling.

Description

technical field [0001] The invention relates to the field of thin film technology, in particular to a method for manufacturing a thin film made of inorganic mineral powder by casting. Background technique [0002] At present, the output of plastic film in my country accounts for about 20% of the total output of plastic products, and it is one of the fastest growing categories of plastic products. It is predicted that the demand for plastic film in the domestic market will continue at a rate of 9% in the next few years. my country's plastic film consumption is about 2 / 3 used as packaging materials, agricultural plastic film accounts for about 30%, and the rest is used as electrical materials, photosensitive materials and electronic information materials. After the rapid development of China's plastic flexible packaging, it has now entered the A period of steady development, with declining profit margins and increasingly fierce competition. The 21st century is the century of en...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08K13/04C08K3/26C08K3/30C08K3/34C08K3/22C08K7/28B29C69/00B29B9/06B29C41/24B29C55/12B29L7/00
CPCB29B9/06B29C41/24B29C55/12B29C69/00B29L2007/00C08J5/18C08J2323/06C08J2423/12C08K2003/2296C08K2003/265C08K2003/3045C08K2201/003C08K2201/014C08L23/06C08L2203/16C08L2207/062C08L2207/066C08L23/12C08K13/04C08K3/26C08K3/30C08K3/34C08K3/22C08K7/28
Inventor 蔡剑勇厉瑞亚蔡俪晨霞
Owner ZHEJIANG SHANLIAN NEW MATERIAL TECH CO LTD
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