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  • 那些用于汽車過濾器的熱熔膠
  • 本站編輯:杭州大偉膠粘劑有限公司发布日期:2019-11-28 20:53 浏覽次數:
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
在制造過程中,汽車空調過濾器首先將整卷濾紙放在紙張折疊機上,並以每分鍾約50至80米的速度折疊。折紙寬度取決于過濾器産品的尺寸規格;在折疊和成形之後,它迅速進入熱熔粘合劑的噴塗過程。熱熔粘合劑以正常速度將固定膠線噴塗在折疊的濾紙上。有時噴塗四條或更多膠水線,並將濾紙粘在一面或雙面。然後快速固化粘合劑,使折疊的濾紙固定而不會反彈;然後根據過濾器的規格切成特定尺寸。在施加膠水之後,通常對過濾器進行質量測試,需要將過濾器置于恒溫烘箱中並垂直放置在90度下24小時以觀察變化。要求不存在位移或變形。
2. 用于过滤器打中胶的热熔胶
對于家用汽車,SUV等的過濾器,爲了加強過濾器,在過濾器元件上打特殊的中膠線以連接濾紙以保持牢固。同時,通常使用PA聚酰胺熱熔粘合劑。須具有良好的硬度,以保持過濾器牢固,並具有一定的靈活性,以防止在較低溫度下脆斷。總的來說,不同的過濾器制造商對高溫和低溫耐受性有不同的要求,熱熔膠制造商還將根據其特定要求推薦合適的熱熔膠。
3. 用于濾紙接縫的熱熔膠
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.