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TPU film about a few key knowledge points!

TPU film about a few key knowledge points!
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  • Categories:Industry news
  • Author:
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  • Time of issue:2020-11-16 13:52
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(Summary description)

TPU film about a few key knowledge points!
Top

(Summary description)

  • Categories:Industry news
  • Author:
  • Origin:
  • Time of issue:2020-11-16 13:52
  • Views:
Information

 

TPU薄膜薄厚度的精度

The thickness error of TPU films produced in large quantities in the international market is still very large. In this case, advanced production lines with good measurement and control technology are needed if we want to win more market share.

 

Due to the poor control of the proportion of raw materials and the reaction temperature of TPU film, many customers complain about the thickness error of TPU film products. However, it is really difficult to accurately control the thickness of TPU film!

 

Since TPU film manufacturer is an elastomer, after drying and dehumidifying, the film is produced by the die head after mixing and curing with screw. Any factor in the middle, including the instability of raw materials, may lead to uneven thickness of the film.

 

In general, the industry's view is that the TPU thin film thickness of 10 silk plus or minus tolerance of 1 silk (0.01mm) is very normal, of course, this is also related to the thickness of the film. The thinner THE TPU film is, the smaller the thickness tolerance is.

 

However, the advanced testing equipment for TPU film manufacturers is often very expensive, so for many small and medium-sized TPU film manufacturers, controlling the thickness of the film and the rejection rate is a headache.

Lightweight materials, which are increasingly used by the automotive industry to improve energy efficiency and reduce carbon emissions, are expected to drive the growth of the TPU thin film market. Can be used in auto parts production to help reduce body weight (about 40%). They can also replace rubber parts in cars.

 

Used in automotive applications such as doors and sound-absorbing panels, instruments and vibration shields, seats and airbags. Replacement or aftermarket is expected to become a new focus of the automotive industry demand for TPU film.

 

Consumers are so price sensitive these days that price plays an important role in the market. TPU thin film market price trend in Europe, North America and Asia Pacific region, 25 to 35 percent higher.

 


TPU薄膜耐高温多少度?

Conventional TPU is generally said to be heat resistant 80℃, which means that its long-term service temperature cannot exceed 80℃, otherwise its service life will decline more seriously. There are also heat-resistant TPU, it is said that the high can withstand 130℃, in addition to the glass fiber modified TPU, heat-resistant temperature is also quite high.

 

TPU film is molecular materials containing - NH - COO - groups, long chain dibasic alcohol and isocyanate component constitutes the soft segments and short key dibasic alcohol and isocyanate component constitutes the hard segment, TPU many features depends on the types of long chain dibasic alcohol, its hardness is the use of hard segment in proportion to adjust, the TPU elastic tape it light aging additive light stabilizer to improve

 

After all, it is plastic, and the general temperature resistance is around 100℃. However, it requires special materials if it needs to work under the environment of high temperature resistance for a long time. It is an enhanced polyurethane with special high temperature resistance and oil resistance, which is often used in automobile oil cups and so on.

 

Generally, if heat resistance is required, it is necessary to measure the dimensions. The softening point of the card can be tested according to the relevant standard. Global softening point is used to test softening point of asphalt pavement. It is commonly used in TPU hot melt adhesives. There appear to be four values in the capillary rheometer. The detection principle is only to test the STATE of TPU at different temperatures under the characteristics of softening point and flow point under constant pressure. Thermodynamic properties of TPU.

 


TPU薄膜成型和用途

TPU thin films can be divided into the following categories according to their applications:

 

1. Shoes TPU is used for shoes mainly because of its excellent elasticity and wear resistance. TPU footwear products are much superior to ordinary footwear products in terms of wearing comfort. Therefore, they are widely used in high-end footwear products, especially some sports shoes and casual shoes.

 

2. Thin film TPU is increasingly popular due to its superior performance and environmental protection concept. At present, wherever PVC is used, TPU can be a substitute for PVC. TPU film can not only fit with various fabrics, but also produce products with clear outline and stable size by vacuum hot forming. With the increasing awareness of environmental protection in China, TPU has been widely used. Among them, the fields of increasing speed are: vamp lining, thermal underwear, transparent underwear, transparent shoulder straps, elastic straps and medical breathable tape.

 

TPU adhesive is a kind of polyurethane adhesive. The use of polyurethane adhesive in Europe and The United States has been quite common, especially in the use of footwear adhesive, almost the use of polyurethane adhesive. The use of TPU adhesives in China is to obtain polyurethane adhesives after TPU dissolution and processing. In the use of TPU adhesive, mainly in Guangdong, Fujian, Zhejiang, Shanghai four main areas.  

 

4. Due to its softness, good tensile strength, impact strength and high and low temperature resistance, TPU hose is widely used in China as a gas and oil transport hose for aircraft, tanks, cars, motorcycles, machine tools and other mechanical equipment. The main TPU hose manufacturers are concentrated in Guangdong, Zhejiang, Jiangsu, Shandong, Hebei and other places.

 

5. Cable TPU provides characteristics of tear resistance, wear resistance and bending. High and low temperature resistance is the key to cable performance. Therefore, in the Chinese market, TPU for advanced cables, such as control cables and power cables, is used to protect the coating materials for complex cable design and is increasingly widely used.

 

6. Roller polyurethane elastomer is widely used in roller due to its high mechanical strength, excellent wear resistance, excellent oil resistance, acid resistance and alkali resistance, outstanding anti-compressibility. Domestic rollers are mainly as follows: industrial rollers, household rollers, sports equipment wheels, medical equipment wheels, toy wheels.

 

7. Plastic modification can be used in PA and ABS plasticizing, but the cost is high.

 

8. The main advantages of TPU ink are: excellent adhesion, low viscosity, good flexure resistance, excellent wear resistance, high gloss, weather resistance, can resist any sun exposure, including UV exposure, excellent toughness and durability in a variety of applications. Aromatic and aliphatic TPU inks can be used in a variety of climate and environmental conditions, the product has stable and outstanding performance. TPU ink with smooth appearance, good shading, alcohol resistance, strong adhesion and other characteristics, mainly suitable for TPU plastic surface decoration. TPU inks such as mobile phones, laptops, shoes, car leather chairs, sofas, high-grade leather goods, handbags, inflatable entertainment TPU products, umbrellas, raincoats and other TPU products are used on metal and glass, with poor adhesion and easy to drop paint.

 


 

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