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Industrial production method of plastic waterproof membrane

A production method and waterproof membrane technology, which can be used in applications, household appliances, flat products, etc., can solve the problems of acid gas and liquid resistance, poor waterproof performance, etc., and achieve excellent waterproof and breathable performance

Inactive Publication Date: 2017-05-17
FUSUI PRODIVITY PROMOTION CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, waterproof and breathable membranes have been widely used in various fields, mainly using nano-scale calcium carbonate as raw material, which has defects such as poor waterproof performance and inability to resist acid gases and liquids.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step (1) Mix 90 parts by weight of polyethylene, 70 parts of fillers and 6 parts of auxiliary materials, extrude and granulate, and set the temperature to 300°C to obtain plastic particles, wherein the auxiliary materials have a particle size of 20 Activated carbon particles of ~40nm and carbon nanofiber tubes of length 60~80nm; the granulation process is divided into two stages. The first stage produces primary particles with a particle size of 0.8-1cm, and then the second In the second stage of granulation, the particle size of the obtained plastic particles is 0.2~0.4mm. In the second stage of granulation, the speed is first set to 90kg / h, then the speed is reduced to 50kg / h, and then After that, the speed is restored to 90kg / h, then reduced to 50kg / h, and finally restored to 90kg / h;

[0030] Step (2) Extruding and casting the plastic particles at a temperature of 380°C to obtain a first-level film with a thickness of 40S, and then performing a second extrusion casting ...

Embodiment 2

[0034] Step (1) Mix 95 parts by weight of polyethylene, 74 parts of fillers, and 7 parts of auxiliary materials, extrude and granulate, and set the temperature to 370°C to obtain plastic particles, wherein the auxiliary materials have a particle size of 20 Activated carbon particles of ~40nm and carbon nanofiber tubes of length 60~80nm; the granulation process is divided into two stages. The first stage produces primary particles with a particle size of 0.8-1cm, and then the second In the second stage of granulation, the particle size of the obtained plastic particles is 0.2~0.4mm. In the second stage of granulation, the speed is first set to 100kg / h, then the speed is reduced to 70kg / h, and then Then the speed is restored to 100kg / h, then reduced to 70kg / h, and finally restored to 100kg / h;

[0035] Step (2) Extruding and casting the plastic particles at a temperature of 400°C to obtain a first-level film with a thickness of 40S, and then performing a second extrusion casting on ...

Embodiment 3

[0039] Step (1) Mix 95 parts by weight of polyethylene, 74 parts of fillers, and 7 parts of auxiliary materials, extrude and granulate, and set the temperature to 360°C to obtain plastic particles, wherein the auxiliary materials have a particle size of 20 Activated carbon particles of ~40nm and carbon nanofiber tubes of length 60~80nm; the granulation process is divided into two stages. The first stage produces primary particles with a particle size of 0.8-1cm, and then the second In the second stage of granulation, the particle size of the obtained plastic particles is 0.2~0.4mm. In the second stage of granulation, the speed is first set to 94kg / h, then the speed is reduced to 70kg / h, and then After that, the speed is restored to 100kg / h, then reduced to 50kg / h, and finally restored to 100kg / h;

[0040] Step (2) Extruding and casting the plastic particles at a temperature of 400°C to obtain a first-level film with a thickness of 40S, and then performing a second extrusion casti...

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Abstract

The invention discloses an industrial production method of a plastic waterproof membrane. The industrial production method comprises the following steps: (1) mixing 90-95 parts of polyethylene, 70-74 parts of a filler and 6-7 parts of an auxiliary material by weight, and performing extrusion granulating, wherein the granulating process comprises two stages; in the first stage, primary granules with the granule diameter of 0.8-1cm are prepared; the primary granules are then granulated for the second stage, the obtained plastic granules have the granule diameter of 0.2-0.4mm, and in the second stage, the speed is set as 90-100kg / h first, then reduced to 50-70kg / h, then restored to 90-100kg / h, then reduced to 50-70kg / h, and finally restored to 90-100kg / h; (2) performing extrusion casting on the plastic granules; (3) stretching the plastic membrane. The breathability of the plastic waterproof membrane is 61% higher than that in the conventional technology.

Description

Technical field [0001] The invention relates to an industrialized production method of a plastic waterproof membrane. Background technique [0002] With the development of the economy and the adjustment of the industrial structure, the market demand for plastic films in various industries continues to rise. Films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins are used for packaging and as a laminate layer. Plastic packaging and plastic packaging products occupy an increasing market share, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields, bringing great convenience to people’s lives. [0003] In recent years, waterproof and breathable membranes have been widely used in various fields, mainly using nanometer calcium carbonate as the raw material, which has the disadvantages of poor waterproof performance and resistance to acid gases and liquids. Summary of the invention [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L91/06C08K7/24C08K3/04C08K3/34B29D7/01
CPCC08K7/24B29D7/01C08J5/18C08J2323/06C08J2491/06C08K3/04C08K3/346C08K2201/003C08K2201/004C08K2201/011C08L23/06C08L2203/16C08L91/06
Inventor 钟静海苏永植梁莲香
Owner FUSUI PRODIVITY PROMOTION CENT