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Polyvinylidene fluoride (PVDF) coating process for aluminum curtain wall

A technology of aluminum curtain wall and aluminum plate, applied in the direction of coating, spraying device, electrostatic spraying device, etc., can solve the problem that the coating is not easy to peel off, and achieve the effect of not easy peeling, uniform painting, and avoiding spraying

Inactive Publication Date: 2011-08-03
陈显忠
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems existing in the existing fluorocarbon spraying process of aluminum curtain wall panels, the present invention proposes a fluorocarbon coating for aluminum curtain wall panels that is not easy to peel off, stick off, evenly painted, and can avoid spraying and sagging. carbon spraying process

Method used

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Embodiment Construction

[0026] The fluorocarbon spraying production line for aluminum curtain wall panels in this embodiment includes a pretreatment system, a hanging conveying system, an automatic spraying system, and a moisture drying system. The automatic spraying system is located on one side of the hanging conveying system, and the automatic spraying system is The system includes a PLC controller and a high-voltage electrostatic spray gun. The pretreatment system includes a pre-degreasing tank, a degreasing tank and a chromizing tank.

[0027] The production process of the above-mentioned fluorocarbon spraying production line for aluminum curtain wall panels includes a pre-treatment process and a spraying process. The pre-treatment process includes the following steps: pre-treat the aluminum plate to be processed, first wash the aluminum material with water for 1 minute, and then carry out Pre-degreasing and degreasing, the pre-degreasing temperature is 40-55°C, the pre-degreasing time is 1min, ...

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Abstract

The invention relates to a polyvinylidene fluoride (PVDF) coating process for an aluminum curtain wall, which comprises a pretreatment flow and a spraying flow. The spraying flow comprises the following steps of: (1) making a pretreated aluminum plate go online; (2) manually spraying primer at a reverse side: spraying the primer at one side of a back automatic spraying system of the aluminum plate by using a hand spray gun; (3) automatically spraying the primer; (4) leveling the aluminum plate subjected to primer spraying; (5) drying the primer at the temperature between 180 DEG C and 250 DEG C, wherein the drying time is 10-20 minutes; (6) manually spraying a finishing coat at the reverse side; (7) automatically spraying the finishing coat; (8) leveling the aluminum plate subjected to finishing coat spraying; (9) manually spraying varnish at the reverse side; (10) automatically spraying the varnish; (11) leveling the aluminum plate subjected to varnish spraying; (12) drying the aluminum plate at the temperature between 230 DEG C and 250 DEG C for 10-20 minutes; (13) cooling the aluminum plate; (14) testing and appliqueing the cooled aluminum plate to form the aluminum curtain wall; and (15) going offline. The invention provides the PVDF coating process for the aluminum curtain wall of which a coating is not easy to peel off and fall off.

Description

technical field [0001] The invention relates to a fluorocarbon spraying process for aluminum curtain wall panels. Background technique [0002] Aluminum curtain wall panels are the external maintenance and external structure walls of buildings. They have the advantages of light weight, beautiful appearance, rich colors, convenient installation, and short construction period. Outstanding, the color of fluorocarbon baking paint can be optional, and it will not fade, crack, pollution, acid and alkali resistance for many years. Because fluorocarbon sprayed aluminum curtain wall has many advantages above, it is widely used in the construction industry. Usually, after the pre-treatment of the aluminum plate, the spraying process of "three coatings and one baking" is adopted, that is, spraying primer→leveling→spraying topcoat→leveling→spraying varnish→leveling→curing. [0003] Usually, after spraying the primer, the topcoat is leveled at room temperature. One of the functions of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/16B05D3/00B05D3/02B05B5/00B05B11/00
Inventor 陈春女陈显忠
Owner 陈显忠
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