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)
4 production processes of TPU film
Extrusion method: add tpu raw materials into the barrel of the extruder, heat and melt, extrude the sheet-shaped TPU film, cut the edge, and wind.
Blow molding: The forming feature of blow molding is that the extruded TPU film is made into a tube blank with the help of an annular gap mold, and compressed air is introduced axially from the mandrel, and the TPU film is clamped with a pair of clamping rods to keep it Constant internal pressure, expanding to the required outer diameter. After cooling and shaping, traction and coiling.
Calendering method: It is a method of continuously forming TPU film by means of several shafts, which are heated inside and rotate next to each other, and the thickness of TPU film depends on the gap of the last shaft.
Casting method: first melt, filter, and defoam the TPU raw material, and then send it to the casting machine, and use the casting nozzle to cast the solution into a TPU film of corresponding thickness.
Stretching method: It is a film-forming method that stretches the TPU film longitudinally and transversely between the softening temperature and the melting temperature. Mainly two-way stretching. Biaxial stretching can improve the performance of TPU film.
The TPU film has good water resistance under sewage, and it is not easy to undergo obvious hydrolysis reaction within 1 to 2 years, especially the polyether series products are stronger. Polyester series products will be completely decomposed after soaking in water at 50°C for half a year, 3 weeks at 70°C or 3 to 4 days at 100°C. This is one of the reasons why TPU film is suitable as an environmentally friendly material. For products in contact with water, it is recommended to use polyether series products.

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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