YuChun
Email : info3@greentpu.com
Add:No. 11, Wentang North Road, Wenzhou Road, Dongcheng Dist., Dongguan, Guangdong, China
(Old address:No. 232, Wentang North Road, Wenzhou Road, Dongcheng Dist., Dongguan, Guangdong, China)
How to solve the problem of TPU hot melt adhesive film foaming during lamination?
Factors affecting the bonding effect of cast TPU hot melt adhesive film mainly include selection and operation. Common bonding problems include degumming, weak adhesion, and bubbles after bonding. Debonding and weak adhesion are most likely a selection issue. Bubbles after bonding are mainly due to problems in operation.
Nylon mesh belt is a release paper TPU hot melt adhesive film belt for clothing.
Whether it is TPU hot melt adhesive film bonding or hot-melt mesh bonding materials, the main reason for blistering is that the air cannot be vented. This situation is very common in the application of non-breathable product materials such as films. Due to non-breathable product materials such as films, the air trapped on the surface during bonding cannot escape like non-woven materials.
Therefore, during the lamination process, if the entire surface is directly pressed, the air in the middle is likely to accumulate, which will easily cause blisters after lamination. For this kind of air bubbles caused by air accumulation, the solution is to use a roller laminating machine or an iron to slowly heat and pressurize the material from one side of the TPU hot melt adhesive film. In this way, the air in the middle can be continuously discharged through the surroundings, and there will be no air accumulation and air bubbles after bonding.
The cause of air bubbles after bonding is not only the pressure build-up caused by the inability of air to escape, but also the foaming phenomenon caused by secondary heating. This is very common in materials and industries that require secondary compounding techniques. Usually, there will be no air bubbles when the material is bonded for the first time, but because the TPU hot melt adhesive film needs to be used for remelting during the second heating, if a certain pressure is not applied, the product may produce air bubbles.

YuChun
Email : info3@greentpu.com
Add:No. 11, Wentang North Road, Wenzhou Road, Dongcheng Dist., Dongguan, Guangdong, China
(Old address:No. 232, Wentang North Road, Wenzhou Road, Dongcheng Dist., Dongguan, Guangdong, China)
· Sample thickness, width to write clearly.
· Sample color and surface effect to be noted.
· Sample hardness and special requirements Please note.
Please contact: +86-13686006083(WeChat)
我司拥有多套完整的生产线;掌握自主研发的核心技术;通过了ISO9001:2015质量管理体系认证;是阿里巴巴深度验厂的厂家;TPU薄膜和TPU热熔胶膜产品通过了SGS测试,取得了测试报告。
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