TWI733571B - Cover plate and its manufacturing method (2) - Google Patents

Abstract

The present invention relates to a cover plate and a manufacturing method thereof, which includes the following steps: a perlite particle mixing step, a pressing step, a baking step, and a skin sticking step to complete at least one cover plate. This cover has the effects of sound absorption, heat insulation, fire prevention, moisture resistance and heat preservation, and the invention uses granular perlite, so its sound absorption effect is much higher than that of the traditional cover.

Description

Cover plate and its manufacturing method (2)

The present invention relates to a cover plate obtained by processing granular perlite and a manufacturing method thereof.

In recent years, the disadvantages of decorative material sound-absorbing panels used in workshops are that they are fragile, deformed and have poor sound insulation. Furthermore, in the production plants of various industries, it is often seen that there are various pipelines for conveying fluids. Some fluids to be conveyed must be conveyed smoothly in a specific high temperature range. When the pipeline is heated, the temperature outside the pipeline will also increase, resulting in the high heat of the surrounding environment outside the pipeline, which is really inappropriate. Furthermore, whether it is the noise generated when the fluid in the pipeline flows, or the sound of other equipment when it is running, materials that can be heat-insulated and sound-proof are required as barriers.

In order to overcome the above-mentioned problems, the present invention provides a method for manufacturing a cover plate, which includes the following steps: a perlite particle stirring step, a pressing step, a baking step, and a skin sticking step.

Among them, the perlite particle stirring step, which reduces the particle size between 2 cm to 5 cm The perlite particles, water glass and water repellent are stirred for at least 1 minute and 30 seconds, wherein the weight ratio of the perlite particles, water glass, bentonite and water repellent is 120:18:1:1.

Press molding step: Put the mixed perlite particles, water glass and waterproofing agent into a press molding machine, and press molding at least one plate with a clamping pressure of more than 150 tons.

Baking step: Place the plate in a baking machine for at least 1 hour, set the humidity to within 5%, and the baking temperature between 120°C and 150°C to complete at least one cover plate.

Skin sticking step: stick at least one kraft paper on the outside of the cover to increase its moisture resistance.

Wherein, before the perlite particles are stirred, glue is sprayed on the perlite particles to increase their stability.

The cover plate manufactured by the above method has better sound insulation and heat insulation effects, and improves its moisture-proof effect.

Hereinafter, the description will be made through embodiments and drawings.

S1: mixing steps of perlite particles

S2: Press forming steps

S3: Baking steps

S4: Epidermal pasting steps

Fig. 1 is a schematic flowchart of an embodiment of the present invention.

Please cooperate with the method of manufacturing the cover as shown in the figure. The method of this embodiment includes the following steps: a perlite particle mixing step S1, a compression molding step S2, a baking step S3, and a skin sticking step S4.

Among them, the perlite particle stirring step S1 is to stir the perlite particles with a particle size between 2 cm and 5 cm, water glass and waterproofing agent for at least 1 minute 30 seconds or 2 minutes or 2 minutes and 30 seconds. According to the current actual experimental results, 2 minutes is the best.

In addition, the weight ratio of the perlite particles, water glass, Pengrun clay and the waterproofing agent is 120:18:0.9:1.

Press-forming step S2: Put the mixed perlite particles, water glass and waterproofing agent into a press-forming machine, and press to form at least one plate with a clamping pressure of more than 150 tons. The steel diameter of the hydraulic press of the press-forming machine is It can be 300mm or more.

Baking step S3: Place the plate in a baking machine for at least about 1 hour to 2 hours, preferably 1.5 hours, set humidity below 5% (1% to 5%), and baking temperature at 120 Celsius Between degrees and 150 degrees, at least one cover is completed. In the baking step, in addition to removing water, the screening effect can be achieved at the same time. If the finished product has cracks, it can be deleted after this step to improve the yield.

Skin sticking step S4: sticking at least one kraft paper on the outside of the cover plate to enhance its moisture resistance and increase the tensile strength of the cover plate.

Furthermore, before the perlite particles are stirred, glue is sprayed. After stirring it with water glass and water repellent, it can bond with other materials more stably.

The cover plate made by the above method can achieve effective noise isolation and heat insulation, and can be applied to the ceiling of a factory or home to generate a good environment.

The mass of the cover plate is 250~280 kg/m3. Furthermore, in the baking step S3, a water-repellent agent can be coated on the board before baking to improve its water-repellent performance.

In the foregoing, specific embodiments of the present invention have been described with reference to the drawings. However, those of ordinary skill in the art can understand that various changes and substitutions can be made to the specific embodiments of the present invention without departing from the spirit and scope of the present invention. These changes and replacements all fall on Within the scope defined by the claims of the present invention.

Claims (2)

A method for manufacturing a cover plate includes the following steps: a stirring step of perlite particles, which stirs perlite particles with a particle size between 2 cm and 5 cm with water glass, bentonite and waterproofing agent for at least 1 minute 30 Second, the weight ratio of the perlite particles, water glass, bentonite and water repellent is 120:18:0.9:1; in addition, the perlite particles are sprayed with glue; in a pressing step, after mixing The perlite particles, bentonite, water glass and waterproofing agent are put into a compression molding machine, and at least one board is pressed with a clamping pressure of more than 150 tons; a baking step is to coat the board with the waterproofing agent Then put it in a baking machine for at least 1 hour, set the humidity below 5%, and the baking temperature between 120°C and 150°C to complete at least one cover; a skin sticking step is outside the cover Glue at least one piece of kraft paper. A cover plate manufactured by the manufacturing method of the cover plate described in claim 1.

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