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Manufacturing method of paper surface-free gypsum plate

A paper-faced gypsum board and a manufacturing method technology, applied to ceramic products, applications, household appliances, etc., can solve the problems of easy deviation of paper, easy to fall off, and increased cost, and achieve reduced production costs, simple preparation methods, and high application wide range of effects

Active Publication Date: 2017-11-10
山西大美至善石膏设备股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many gypsum boards sold in the market, with many varieties and specifications, including ordinary gypsum boards, high-grade ordinary gypsum boards, high-grade fire-resistant gypsum boards, moisture-proof gypsum boards, etc., but Most of these varieties are two layers of protective paper for gypsum paper panels. The increase of two protective papers will increase the cost accordingly. The protective paper is not well bonded, it is easy to fall off, and the paper is easy to deviate
However, in the current known technology, this technical problem has not been well overcome

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The raw materials include 5 parts of gypsum fiber, 0.1 part of modified starch, 5 parts of retarder, and 0.5 part of water reducing agent. Mix well to obtain a uniform small material, and then fully mix with 100 parts of desulfurized gypsum powder to obtain a uniform dry mix, then add 0.6 parts of foaming agent and water into the slurry storage tank according to the proportion, and the temperature in the slurry storage tank is kept At 30-40 degrees Celsius, then add the evenly stirred dry mixture into the slurry storage tank, and then stir to obtain a uniform gypsum slurry, and then use the slurry pump to pump it into the forming paving machine, and then scrape it off If the slurry is overflowed, the paper-free gypsum board can be obtained.

Embodiment 2

[0039] The raw materials include 10 parts of gypsum fiber, 10 parts of modified starch, 0.1 part of retarder, and 0.1 part of water reducer. Mix well to obtain a uniform small material, and then fully mix with 70 parts of desulfurized gypsum powder to obtain a uniform dry mixture, then add 0.2 parts of foaming agent and water into the slurry storage tank according to the proportion, and the temperature in the slurry storage tank is kept At 30-40 degrees Celsius, then add the evenly stirred dry mixture into the slurry storage tank, and then stir to obtain a uniform gypsum slurry, and then use the slurry pump to pump it into the forming paving machine, and then scrape it off If the slurry is overflowed, the paper-free gypsum board can be obtained.

Embodiment 3

[0041] The raw materials include 1 part of gypsum fiber, 5 parts of modified starch, 1 part of retarder, and 2 parts of water reducing agent. Mix well to obtain a uniform small material, and then fully mix with 85 parts of desulfurized gypsum powder to obtain a uniform dry mix, and then add 0.8 parts of foaming agent and water into the slurry storage tank according to the proportion, and the temperature in the slurry storage tank is kept At 30-40 degrees Celsius, then add the evenly stirred dry mixture into the slurry storage tank, and then stir to obtain a uniform gypsum slurry, and then use the slurry pump to pump it into the forming paving machine, and then scrape it off If the slurry is overflowed, the paper-free gypsum board can be obtained.

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PUM

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Abstract

The invention discloses a manufacturing method of a paper surface-free gypsum plate. The method comprises the following steps: stirring desulfurized gypsum powder, cellulose, modified starch, a set retarder and a water reducer which are used as raw materials according to a certain mass ratio to form a uniform mixture; adding the uniformly stirred mixture into foaming agent dissolved water, and uniformly stirring the mixture and the water to obtain a uniformly mixed gypsum slurry; pumping the slurry into a molding forming machine, and scraping off the overflow slurry to obtain the paper surface-free gypsum plate. The paper surface-free gypsum plate made through the method has the advantages of simple production method, easiness in operation, wide application range, especial reduction of the production cost, saving of two layers of surface protection paper, and difficult deviation of the slurry during the molding of the paper surface-free gypsum plate.

Description

technical field [0001] The invention relates to the field of gypsum board production, in particular to a method for manufacturing a high-strength paper-free gypsum board. Background technique [0002] Gypsum board is a material made of building gypsum as the main raw material. It is a building material with light weight, high strength, thin thickness, convenient processing, sound insulation, heat insulation and fire resistance. It is one of the new lightweight panels that are currently being developed. Gypsum boards have been widely used in interior partition walls, wall cladding panels (replacing plastering layers), ceilings, sound-absorbing panels, ground floor panels and various Decorative panels, etc. [0003] At present, there are many gypsum boards sold in the market, with many varieties and specifications, including ordinary gypsum boards, high-grade ordinary gypsum boards, high-grade fire-resistant gypsum boards, moisture-proof gypsum boards, etc., but Most of the...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B111/27C04B111/28C04B111/40C04B111/52
CPCC04B28/144C04B2111/00017C04B2111/27C04B2111/28C04B2111/40C04B2111/52C04B2201/20C04B2201/32C04B2201/50C04B14/38C04B24/38C04B24/06C04B20/0048C04B38/10C04B2103/302C04B2103/0068
Inventor 殷彤孙红芳殷越
Owner 山西大美至善石膏设备股份有限公司