彩涂铝卷的涂装方式

天物彩板专注彩涂卷行业17年——彩涂铝卷的涂装方式_武清彩涂铝卷现货价格请拨打网站上方电话咨询

涂层是生产线的核心部分。主要设备包括辊道涂布机和干燥通道。一般采用正面或背面涂层工艺。根据涂布辊和传动辊方向的不同，可分为正向涂布和反向涂布两种工艺。

（1） 涂布设备辊道涂布机是利用辊子在铝卷上涂布的设备。上海废铜广泛应用于kdwa6td二辊机和三辊机。双辊机主要由油漆槽、升降辊、涂布辊、传动辊等组成。在运行过程中，预先调整好的油漆由工作泵泵入油漆罐。提升辊负责将油漆粘在油漆槽中，并将其转移到涂层辊上。涂布辊在传动装置中的铝线圈上施涂涂料，传动辊主要负责金属线圈的传动。在实际操作过程中，提升辊、涂布辊和传动辊之间的相对转速有一定的比例。
与二辊机相比，三辊机多了一个控制辊。控制辊用于调整从提升辊输送到涂布辊的油漆量，对精确控制油漆量起到一定作用。如果三个辊之间的转速比不合理，涂层材料将出现水平条纹和垂直条纹等表面问题。通常，三个辊子的线速度：

涂布辊速度>传动辊速度>提升辊速度。合理控制三辊的转速和配比是涂布外观好的薄膜的关键因素之一。三辊机主要用于表面要求高的场合。

（2） 涂层工艺一般为预涂卷材铝涂层工艺，根据涂层层数可分为三道涂层工艺、两道涂层工艺和单道涂层工艺。根据涂布辊和传动辊的旋转方向，可分为正向涂布和反向涂布。如果涂布辊的旋转方向与基材的旋转方向相同，则涂布方法为正向涂布。相反，它是反向涂层。一般来说，前向涂装工艺只能涂装较低的湿膜厚度，且该工艺涂装的漆膜表面外观不理想，因此不采用该工艺。反向涂覆工艺是目前应用广泛的一种涂覆工艺。通过调整滚轮之间的旋转比和基板的移动速度，可以获得所需厚度和光滑外观的薄膜。涂层是整个生产线的核心部分。本节主要内容如下：

1.滚筒2之间的相对转速比，基材厚度和速度与基材3表面温度之间的平衡参数，涂层粘度和滚筒4之间的间隙，涂层干膜厚度与涂层与滚筒5之间间隙之间的关系，固化时间、干燥通道长度、基板加工速度、基板厚度和表面温度之间的关系。

（3） 后处理阶段后处理部分用于进一步加工生产的卷铝，以使其具有更好的保护和装饰效果。主要有薄膜、印刷、压花和成型。在这个简单的描述中：薄膜是将多元稀烃可剥离薄膜压贴在面漆上。印刷是在涂有面漆的金属辊上印刷各种图案和图案。压花是涂膜表面的热压图案。压榨就是挤出一个10美分的硬币

Coating is the core part of the production line. The main equipment includes roller coater and drying channel. Generally, the front or back coating process is adopted. According to the different direction of coating roller and transmission roller, it can be divided into forward coating and reverse coating processes.
(1) coating equipment roller coating machine is a kind of equipment that uses roller to coat coating on aluminum coil. Shanghai scrap copper is widely used in kdwa6td two roller machine and three roller machine. The double roller machine is mainly composed of paint tank, lifting roller, coating roller and transmission roller. During operation, the paint adjusted in advance is pumped into the paint tank by the working pump. The lifting roller is responsible for gluing the paint in the paint tank and transferring it to the coating roller. The coating roller applies the paint to the aluminum coil in the transmission, and the transmission roller is mainly responsible for the transmission of metal coil. In the actual operation process, the relative rotation speed between the lifting roller, coating roller and transmission roller has a certain proportion.
Compared with the two roll machine, the three roll machine has one more control roll. The control roll is used to adjust the amount of paint transferred from the lifting roll to the coating roll, which plays a certain role in accurately controlling the amount of paint. If the rotation speed ratio between the three rollers is unreasonable, the coated material will have surface problems such as horizontal stripes and vertical stripes. Generally, the linear speed of three rollers:
Coating roller speed > transmission roller speed > lifting roller speed. Reasonable control of the rotation speed and proportion of the three rollers is one of the key factors for coating a good appearance film. The three roller machine is mainly used in occasions with high surface requirements.
(2) the coating process is generally pre coated coil aluminum coating process, which can be divided into three coating processes, two coating processes and single coating processes according to the number of coating layers. According to the rotation direction of coating roller and transmission roller, it can be divided into forward coating and reverse coating. If the rotation direction of the coating roller is the same as that of the substrate, the coating method is forward coating. On the contrary, it is reverse coating. Generally, the forward coating process can only paint a low wet film thickness, and the surface appearance of the film coated by this process is not ideal, so this process is not used. Reverse coating process is a widely used coating process at present. By adjusting the rotation ratio between rollers and the travel speed of substrate, the film with required thickness and smooth appearance can be obtained. Coating is the core part of the whole production line. The main parts of this section are as follows:
1. The relative rotation speed ratio between rollers 2, the balance parameter between the thickness and speed of the substrate and the surface temperature of the substrate 3, the viscosity of the coating and the gap between rollers 4, the relationship between the dry film thickness of the coating film and the gap between the coating and the drum 5, the relationship between the curing time, the length of the drying channel, the processing speed of the substrate, the thickness of the substrate and the surface temperature.
(3) post treatment stage the post-treatment section is used to further process the produced coil aluminum to give it better protection and decoration effect. There are mainly film, printing, embossing and molding. In this simple description: the film is to press and paste the polydilute hydrocarbon peelable film on the top coat. Printing is to print various patterns and patterns on the metal roll coated with finish paint. Embossing is the hot embossed pattern on the surface of the paint film. Pressing is to press out a three-dime