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  • 那些用于汽车过滤器的热熔胶
  • 本站编辑:杭州大伟胶粘剂有限公司发布日期:2019-11-28 20:53 浏览次数:
通常来说,汽车过滤器的类型有滚筒式,板式,不规则形状等。卡车,货车等通常使用滚筒式过滤器,而家用汽车和SUV通常使用板式过滤器。随着汽车工业越来越重视轻量化,降噪,低排放,低VOC,节能和环保的要求,它也有特定的要求。 汽车滤清器热熔胶:要求环保,无毒,快速固化,低气味,低VOC的粘接, 那么汽车滤清器的对热熔胶具体要求是什么? ?事实上,汽车过滤器的粘接主要包括折纸,中胶固定,滤纸接缝,过滤器边框粘接等。
1. 用于滤清器折纸的热熔胶
在制造过程中,汽车空调过滤器首先将整卷滤纸放在纸张折叠机上,并以每分钟约50至80米的速度折叠。折纸宽度取决于过滤器产品的尺寸规格;在折叠和成形之后,它迅速进入热熔粘合剂的喷涂过程。热熔粘合剂以正常速度将固定胶线喷涂在折叠的滤纸上。有时喷涂四条或更多胶水线,并将滤纸粘在一面或双面。然后快速固化粘合剂,使折叠的滤纸固定而不会反弹;然后根据过滤器的规格切成特定尺寸。在施加胶水之后,通常对过滤器进行质量测试,需要将过滤器置于恒温烘箱中并垂直放置在90度下24小时以观察变化。要求不存在位移或变形。
2. 用于过滤器打中胶的热熔胶
对于家用汽车,SUV等的过滤器,为了加强过滤器,在过滤器元件上打特殊的中胶线以连接滤纸以保持牢固。同时,通常使用PA聚酰胺热熔粘合剂。须具有良好的硬度,以保持过滤器牢固,并具有一定的灵活性,以防止在较低温度下脆断。总的来说,不同的过滤器制造商对高温和低温耐受性有不同的要求,热熔胶制造商还将根据其特定要求推荐合适的热熔胶。
3. 用于滤纸接缝的热熔胶
它指的是滤纸末端的接头粘接,滤纸两侧的接缝,通常过滤器厂采用EVA热熔胶,PO热熔胶,PA热熔胶。空气过滤器连接通常使用EVA或PO热熔胶,而机油过滤器接头现在大多与PA或聚氨酯热熔胶粘合。 PA聚酰胺热熔粘合剂具有非常好的耐高温和耐油性。它的外观可以是PA胶棒,用热熔胶枪熔化,手工涂在界面滤纸上,也可以是用热熔胶机熔化的颗粒,用机械设备自动夹紧缝合。
Generally speaking, the type of automobile filter has drum type, plate type, irregular shape and so on. Trucks, vans, etc usually use drum filters, while family cars and suvs usually use plate filters. With the automotive industry paying more and more attention to lightweight, noise reduction, low emissions, low VOC, energy saving and environmental protection requirements, it also has specific requirements. Automobile filter hot melt adhesive: requirements of environmental protection, non-toxic, fast curing, low smell, low VOC bonding, so what is the specific requirements of automotive filter hot melt adhesive? ? In fact, the adhesive of automobile filters mainly includes paper folding, glue fixation, filter paper joints, filter frame adhesive, etc.
 
1. Hot melt adhesive for folding filter
 
In the manufacturing process, automotive air conditioning filters first place a full roll of filter paper on a paper folding machine and fold at a rate of about 50 to 80 meters per minute. The origami width depends on the size of the filter product; After folding and forming, it quickly enters the hot melt adhesive spraying process. The hot melt adhesive sprays the fixed glue line onto the folded filter paper at a normal rate. Sometimes four or more lines of glue are sprayed and the filter paper is glued to one or both sides. Then quickly solidify the adhesive, so that the folded filter paper will not rebound; Then cut to a specific size according to the size of the filter. After applying the glue, the filter is usually tested for quality. The filter is placed in a thermostatic oven and placed vertically at 90 degrees for 24 hours to observe the change. It requires that there be no displacement or deformation.
 
2. Hot melt adhesive for strainers
 
For filters on family cars, suvs, etc., to strengthen the filter, special glue lines are made on the filter element to connect the filter paper to keep it firm. At the same time, a PA polyamide hot melt adhesive is usually used. Must have good hardness to keep the filter firm, and have some flexibility to prevent brittle at lower temperatures. In general, different filter manufacturers have different requirements for high and low temperature tolerance, and hot melt adhesive manufacturers will also recommend suitable hot melt adhesive based on their specific requirements.
 
3. Hot melt adhesive for filter paper joints
 
It refers to the joint bonding at the end of the filter paper and the joint on both sides of the filter paper. Usually, the filter factory adopts EVA hot melt adhesive, PO hot melt adhesive and PA hot melt adhesive. Air filter connections are usually made with EVA or PO hot melt adhesives, while oil filter connections are now mostly made with PA or polyurethane hot melt adhesives. PA polyamide hot melt adhesive has excellent resistance to high temperature and oil. It can be a PA stick, melted with a hot melt gun and hand-applied to the interface filter paper, or it can be particles melted with a hot melt adhesive machine and automatically clamped and stitched with mechanical equipment.