Composite type mute aluminum plate for manufacturing aluminum gusset plate and preparation method of composite type mute aluminum plate

Abstract

The invention relates to a composite mute aluminum plate for manufacturing an aluminum gusset plate and a preparation method of the composite mute aluminum plate, the composite mute aluminum plate comprises two layers of aluminum plates, a sound-absorbing and noise-reducing film is clamped between the two layers of aluminum plates, and the outer surface of one layer of aluminum plate is coated with a PET (Polyethylene Terephthalate) film. Compared with the conventional aluminum plate, the composite mute aluminum plate for manufacturing the aluminum gusset plate has the advantages that the sound-absorbing and noise-reducing film is compounded between the two layers of aluminum plates; the problem that after a conventional aluminum plate is made into an aluminum gusset plate, the aluminum gusset plate is prone to being extruded and collided in the cutting, installing and using processes, and large metal agitating noise is generated is effectively solved, meanwhile, the good absorption and blocking effects on environmental noise can be achieved, and therefore the mute performance and effect of the aluminum plate are achieved.

Description

Technical Field

[0001] This invention relates to the field of aluminum sheet processing technology, and in particular to a composite silent aluminum sheet for making aluminum ceiling panels and its preparation method. Background Technology

[0002] Aluminum ceiling panels, as a commonly used decorative building material, have the advantages of being lightweight, strong, easy to process, and relatively inexpensive. Aluminum ceiling panels are made of aluminum (or aluminum alloy) sheets. Currently, aluminum ceiling panels made from conventional aluminum (or aluminum alloy) sheets are prone to generating significant metallic bulging noise during cutting, installation, and use due to compression and impact, making it difficult to achieve a "quiet" performance. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a composite silent aluminum sheet for making aluminum ceiling panels and a method for preparing the same, so as to overcome the defects and deficiencies of the existing technology and products as described in the background art, meet the current application needs, and fill the gap in this field.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a composite silent aluminum sheet for making aluminum ceiling panels, comprising two layers of aluminum sheets, with a sound-absorbing and noise-reducing film sandwiched between the two layers of aluminum sheets by a heat-sealing process, and a PET film covering the outer surface of one of the aluminum sheets.

[0005] Furthermore, the sound-absorbing and noise-reducing film is a PVB film.

[0006] A process for preparing composite silent aluminum sheets for making aluminum ceiling panels, as described above, includes the following steps: a. After surface cleaning, the aluminum sheet is first coated with a PET film on one side of the aluminum sheet using a laminating machine. The laminating machine uniformly coats one side of the aluminum sheet with a polyurethane adhesive at a temperature of 160℃~220℃, with a coating amount of 3g / m²~3.5g / m². The PET film is then pressed onto the aluminum sheet surface under a laminating pressure of 5kgf / cm²~10kgf / cm² and a pressing speed of 30m / min~60m / min; b. After the PET film-coated aluminum sheet has cooled naturally, it is fed back into the laminating machine, and a PVB film is coated onto the other side of the aluminum sheet using a hot-pressing method. The pressing temperature of the laminating machine is controlled at 120℃~130℃, the laminating pressure is controlled at 50kgf / cm²~60kgf / cm², and the pressing speed is controlled at 30m / min~60m / min; c. The aluminum plate covered with PET film and PVB film is fed back into the laminating machine, and another layer of aluminum plate is pressed onto the surface of the PVB film by hot pressing. The laminating temperature is controlled at 120℃~130℃, the laminating pressure is controlled at 50kgf / cm²~60kgf / cm², and the laminating speed is 30m / min~60m / min. After lamination, the resulting composite plate is placed in an environment of 45℃~60℃ for curing. After 24h~72h, the finished composite silent aluminum plate is obtained.

[0007] The beneficial effects of this invention are as follows: Compared with conventional aluminum sheets, the composite silent aluminum sheet of this invention for making aluminum ceiling panels effectively solves the problem that conventional aluminum sheets are prone to generating large metal bulging noise due to compression and collision during the cutting, processing, installation and use of aluminum ceiling panels after they are made into aluminum ceiling panels. At the same time, it can also play a good role in absorbing and blocking environmental noise, thereby achieving the "silent" performance and effect of the aluminum sheet. Attached Figure Description

[0008] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0009] Figure 1 This is a cross-sectional structural diagram of the composite sound-absorbing aluminum sheet used to manufacture aluminum ceiling panels according to the present invention.

[0010] In the picture: 1. Aluminum plate; 2. Sound-absorbing and noise-reducing film; 3. PET film. Detailed Implementation

[0011] Example 1 A process for preparing composite sound-absorbing aluminum sheet for making aluminum ceiling panels includes the following steps: a. After the aluminum plate is cleaned, a PET film is first bonded to one side of the aluminum plate using a laminating machine: the laminating machine uniformly coats a polyurethane adhesive at a temperature of 160℃~180℃ on one side of the aluminum plate, with a coating amount of 3g / m², and presses the PET film onto the aluminum plate surface under a laminating pressure of 5kgf / cm² and a pressing speed of 30m / min. b. After the aluminum plate covered with PET film is naturally cooled, it is sent back into the laminating machine to be hot-pressed to coat the other side of the surface with PVB (polyvinyl butyral) film. The laminating temperature of the laminating machine is controlled at 120℃, the laminating pressure is controlled at 50kgf / cm², and the laminating speed is 30m / min. c. The aluminum plate covered with PET film and PVB film is fed back into the laminating machine, and another layer of aluminum plate is pressed onto the surface of the PVB film by hot pressing. The laminating temperature of the laminating machine is controlled at 120℃, the laminating pressure is controlled at 50kgf / cm², and the laminating speed is 30m / min. d. After pressing, the resulting composite sheet is placed in an environment of 45℃ for curing. After 72 hours, the composite silent aluminum sheet is obtained.

[0012] Example 2 A process for preparing composite sound-absorbing aluminum sheet for making aluminum ceiling panels includes the following steps: a. After the aluminum plate is cleaned, a PET film is first bonded to one side of the aluminum plate using a laminating machine: the laminating machine uniformly coats a polyurethane adhesive at a temperature of 180℃~200℃ onto one side of the aluminum plate, with a coating amount of 3.2g / m², and presses the PET film onto the aluminum plate surface under a laminating pressure of 8kgf / cm² and a pressing speed of 45m / min. b. After the aluminum plate covered with PET film is naturally cooled, it is sent back into the laminating machine to be hot-pressed to coat the other side of the surface with PVB film. The laminating temperature of the laminating machine is controlled at 125℃, the laminating pressure is controlled at 55kgf / cm², and the laminating speed is 45m / min. c. The aluminum plate covered with PET film and PVB film is fed back into the laminating machine, and another layer of aluminum plate is pressed onto the surface of the PVB film by hot pressing. The laminating temperature of the laminating machine is controlled at 125℃, the laminating pressure is controlled at 55kgf / cm², and the laminating speed is 45m / min. d. After pressing, the resulting composite sheet is placed in an environment of 55℃ for curing. After 48 hours, the composite silent aluminum sheet is obtained.

[0013] Example 3 A process for preparing composite sound-absorbing aluminum sheet for making aluminum ceiling panels includes the following steps: a. After the aluminum plate is cleaned, a PET film is first bonded to one side of the aluminum plate using a laminating machine: the laminating machine uniformly coats a polyurethane adhesive at a temperature of 200℃~220℃ on one side of the aluminum plate, with a coating amount of 3.5g / m², and presses the PET film onto the aluminum plate surface under a laminating pressure of 10kgf / cm² and a pressing speed of 60m / min. b. After the aluminum plate covered with PET film is naturally cooled, it is sent back into the laminating machine to be hot-pressed to coat the other side of the surface with PVB film. The laminating temperature of the laminating machine is controlled at 130℃, the laminating pressure is controlled at 60kgf / cm², and the laminating speed is controlled at 60m / min. c. The aluminum plate covered with PET film and PVB film is fed back into the laminating machine, and another layer of aluminum plate is pressed onto the surface of the PVB film by hot pressing. The laminating temperature of the laminating machine is controlled at 130℃, the laminating pressure is controlled at 60kgf / cm², and the laminating speed is 60m / min. d. After pressing, the resulting composite sheet is placed in an environment of 60℃ for curing. After 24 hours, the composite silent aluminum sheet is obtained.

[0014] PVB, or polyvinyl butyral, is a high-molecular-weight polyvinyl alcohol. It has strong adhesion, excellent impact resistance and weather resistance, and also has a sound-damping effect, significantly reducing noise transmission. Therefore, laminating a layer of PVB film between two aluminum plates can both ensure the strength of the aluminum plates and give them a "silent" effect during use.

[0015] The composite silent aluminum sheet prepared according to the various embodiments was made into aluminum ceiling panels, and the strength and "silent" performance were compared with those of aluminum ceiling panels of the same thickness made from conventional aluminum sheet. It was found that the mechanical strength of the two was almost the same, but the aluminum ceiling panels made from composite silent aluminum sheet generated very little noise when cut, squeezed, or impacted. The noise level was much lower than that of conventional aluminum ceiling panels under the same conditions.

[0016] The above embodiments are only used to explain the present invention and are not intended to limit the protection of the present invention. Any non-substantial modifications made based on the essential solution of the present invention should fall within the protection scope of the present invention.

Claims

1. A composite sound-silent aluminum sheet for manufacturing aluminum ceiling panels, characterized in that: It includes two aluminum plates (1), with a sound-absorbing and noise-reducing film (2) sandwiched between the two aluminum plates (1), and a PET film (3) covering the outer surface of one of the aluminum plates (1).

2. The composite silent aluminum sheet for manufacturing aluminum ceiling panels according to claim 1, characterized in that: The sound-absorbing and noise-reducing membrane (2) is a PVB membrane.

3. A preparation process for a composite sound-absorbing aluminum sheet for making aluminum ceiling panels as described in claim 1 or 2, characterized in that: Includes the following steps: a. After the aluminum plate is cleaned, a PET film is first bonded to one side of the aluminum plate using a laminating machine: the laminating machine uniformly coats one side of the aluminum plate with a polyurethane adhesive at a temperature of 160℃~220℃, with a coating amount of 3g / m²~3.5g / m², and presses the PET film onto the aluminum plate surface under a laminating pressure of 5kgf / cm²~10kgf / cm² and a pressing speed of 30m / min~60m / min. b. After the aluminum plate covered with PET film is naturally cooled, it is sent back into the laminating machine to be hot-pressed to coat the other side of the surface with PVB film. The laminating temperature of the laminating machine is controlled at 120℃~130℃, the laminating pressure is controlled at 50kgf / cm²~60kgf / cm², and the laminating speed is controlled at 30m / min~60m / min. c. The aluminum plate covered with PET film and PVB film is fed back into the laminating machine, and another layer of aluminum plate is pressed onto the surface of the PVB film by hot pressing. The laminating temperature of the laminating machine is controlled at 120℃~130℃, the laminating pressure is controlled at 50kgf / cm²~60kgf / cm², and the laminating speed is controlled at 30m / min~60m / min. d. After pressing, the resulting composite sheet is placed in an environment of 45℃~60℃ for curing. After 24h~72h, the finished composite silent aluminum sheet is obtained.

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