What should I pay attention to when processing TPE highly transparent varieties?

Since any impurities in the TPE material may affect the transparency of the product, it is necessary to pay attention to sealing in the process of storage, transportation and feeding to ensure that the TPE raw material is clean. In particular, TPE raw materials contain moisture, which can cause deterioration of raw materials after heating, so be sure to dry them. In injection molding, a dry hopper must be used for dosing.

It should also be noted that during the drying process, the incoming air should ideally be filtered and dehumidified to ensure that the raw materials will not be contaminated.

2. The problem of TPE recycled material reuse.

In order to prevent the deterioration of the upper surface effect, the release agent is generally used as little as possible during injection molding; When Guofeng rubber and plastic TPE is used to recycle, it is generally 5%-10%, and not more than 20%.

3. Cleaning of barrel, screw and its accessories.

In order to prevent the pollution of Guofeng rubber and plastic TPE raw materials and the storage of old materials or impurities in the depression of the screw and accessories, especially the existence of materials with poor thermal stability, the screw cleaning agent should be used to clean each piece before use and after shutdown, so that it shall not stick to impurities.

4. Problems that should be paid attention to in the injection molding process (including the requirements of the injection molding machine).

In order to reduce internal stress and surface quality defects, the following aspects should be paid attention to in the injection molding process.

a.Guofeng Rubber & Plastic TPE recommends that you should choose an injection molding machine with a special screw and a separate temperature control nozzle;

b.Under the premise that the material does not decompose, a higher injection temperature should be used;

c.Injection pressure: generally high to overcome the defect of high viscosity of the melt, but too high pressure will produce internal stress and cause dememetic difficulty and deformation;

d.Injection speed: In the case of satisfying the filling mold, it should generally be low, and it is best to use slow, fast and slow multi-stage injection;

e.Holding time and molding cycle: under the condition that the product is filled without depression and bubbles; It is advisable to keep it as short as possible to minimise the residence time of the melt in the barrel;

f.Screw speed and back pressure: under the premise of satisfying the plasticizing quality, it should be as low as possible to prevent the possibility of degrading;

g.Mold temperature: the cooling of the product has a great impact on the quality, so the mold temperature must be able to accurately control the process, if possible, the mold temperature should be higher.

e.To choose a highly transparent TPE material, you still need to find a stable supplier.

Products made of highly transparent TPE materials often have very strict requirements for appearance transparency, like some medical consumables, which need to meet the requirements of liquid medicine visibility, so the product should have uniform color and luster, and no pores, markings, black spots, etc., so high transparency TPE materials should pay special attention to the following points when storing and processing.

1.The materials should be kept sealed during transportation and storage, and the unsealed materials should be sealed in time to prevent moisture.

2.Before the material is processed and produced, the dryness of the material itself, the hopper and the processing equipment should be ensured, and the material can be baked first if necessary.

3.Before processing, the old material impurities remaining in the barrel and screw of the equipment should be cleaned up to prevent pollution.

4.When processing, it is necessary to choose suitable molds and equipment, such as special screws, injection molding machines with separate temperature control nozzles, etc.

5.In order to prevent the product from being difficult to demold, the injection pressure should not be high and the injection speed should not be fast during processing.

6.Reasonably control the mold temperature and injection temperature, both of which should be adjusted higher.

7.In order to prevent the product from denting, bubbles, etc., the holding time and molding cycle should be shortened as much as possible.

8.Reduce the amount of release agent used, and try to keep the amount between 5 and 10.

In addition to the above points, Tairuifeng recommends that you choose materials with mature technology and stable quality, so that the quality of materials can be guaranteed and more worry-free.

There are a lot of issues that need to be paid attention to, and you have to look at that issue that you need to pay attention to.

In the actual processing process, users sometimes encounter this situation, the first supplier has repeatedly claimed that it is a highly transparent TPE material, but the transparency of the products processed by the user is not very good. This is related to the injection molding temperature of the material. Generally, the higher the injection temperature, the better the transparency of the product obtained, but the temperature should not cause the aging and degradation of the material.

The recommended injection temperature of TPE high transparency material is 140 230, and the actual injection temperature is related to the molecular weight of TPE substrate SEBS, TPE hardness, mold design and equipment model.

To be honest, I don't quite understand the purpose of the questioner. Let's talk about high transparency TPE.

Generally speaking, TPE refers to the elastomer alloy pellets that are blended and granulated with SEBS base materials.

This type of TPE, with a hardness of 0 70A, has a high degree of transparency.

In addition, TEPE is co-blended with SEBS with a high degree of hydrogenation, desalted SEBS, and oil with a high number of hydrogenation times, which has a higher transparency.

Analysis of influencing factors of elastomer TPE transparency.

Yes, Tereflex tells you that at present, we have natural color, black, high transparency and other varieties, and TPE coloring rate is high, plasticity, and the design space is very large.

Yes, what are you going to do?

Hello, there are a lot of them in Guangdong, better ones, it is recommended to find the Shenzhen side, China Plastic King Plastic Products Company, which is better for high transparency TPE.

Introduction to the advantages of raw materials for TPE soft mobile phone cases:

1.Strong adhesion to plastics such as PC, ABS or PC ABS, not easy to fall off, specially matched with the unique small contact surface of mobile phone iPad tablet tablet case.

2.It has super strength tensile strength and tear resistance, and the TPE soft rubber layer adopts ultra-thin thickness (the thickness can reach the lagging thickness.

3.It is soft to the touch, scratch-resistant and has excellent resilience.

4.The injection molding cycle is short, easy to glue, and does not stick to the mold.

5.The color is not easy to change and does not spit frost. The UV resistance level can be up to 5. Different from traditional TPE, it is easy to become dirty, easy to stick to dust, and easy to fade.

6.In line with the environmental protection and non-toxic of the European Union, the United States, Japan, and in line with environmental safety regulations such as REACH, RoHS, EN71-3, PAHS, 6P, etc.

Landlord, transparent TPE material is more than one variety of models, and there are also differences, specifically**It is recommended that you directly ask the manufacturer Zhongsu King, they have been doing this for 15 years, and the varieties are complete.