Thermoplastic Elastomer

About Thermoplastic Elastomer

Thermoplastic elastomer TPE/TPR, also known as artificial rubber or synthetic rubber. The product not only has the high elasticity, aging resistance and oil resistance of traditional cross-linked vulcanized rubber. Also has the characteristics of convenient processing and wide processing mode of ordinary plastics. It can be produced by injection molding, extrusion, blow molding and so on .100% direct secondary use after the edge angle of the nozzle is crushed.

Both simplify the processing process and reduce the processing cost, so the thermoplastic elastomer TPE/TPR material has become the latest material to replace the traditional rubber. Its environmental protection, non-toxic, comfortable feel, beautiful appearance, make the product more creative. Therefore, it is also a new synthetic material with more humanization and high grades. And it is also a standard environmental protection material in the world.

How to deal with the oiling of Thermoplastic Elastomer

With the development of various molds making and injection molded products, we encounter a wide variety of products, including some inside soft plastic products.  The low hardness below shore 70A degrees PVC and TPE, TPR, TPU plastic injection molded parts paint quality problems, has been difficult to control and assurance the painting department production when quality problems, the lower hardness of the harder to ensure. Hardness as low as 70 degrees below the paint quality issues seems to have been difficult to control, often occur.

It was often to blame bad weather that plastic parts release agents or placed time are too long.  So causes the fuel injection parts off oil, has not been able to have a good solution to let us go off oil to ensure low hardness.  We tried much open water, detergent and a variety of operating methods. Thermoplastic elastomer was failed to receive a steady improvement effect. Forcing us to continue to study more effectively, more stable solution measures in order to maintain normal production of the injection department.

Paint and clean way

As we all know, the thermoplastic elastomer pieces paint quality problem is caused, because parts surface with a hard layer to remove traces oil.  Some release agent residue layer traces of oil, thermoplastic elastomer part traces of oil leakage from the surface, integration of the elastomer parts. It is difficult to clean, and A more serious problem is a long trace of oil.

To solve the Thermoplastic elastomer parts problem

Clear of the surface oil traces. Out of the main direction of the oil, the problem solves low hardness soft grade. In many cleaning tests, have tried various cleaning agents to add a little of that water and other solvents to clean the 70 degrees. The surface traces of oil thermoplastic elastomer parts to no avail. Oil the track slightly some there will be some improvement effect. Therefore it can not become an effective and stable solution. The oil leaking problem also occurs from time to time.

Finally, we boldly day that water to wash 70 degrees. the surface of the thermoplastic elastomer parts, the results obtained satisfactory success. A strong plastic corrosive solvent that can melt PVC、ABS and PC materials. We use this feature to solve the oil trace on the elastomer surface. Water cleaning elastomer parts, the surface layer has a large number of traces of melting, exposed clean surface oil.

How to melt the surface of the oil without destroying the elastomer surface quality

The key is our ability to solve problems. After several experiments, we finally found a very simple and effective solution, which is easy to produce. Soak a few seconds after elastomer production. Allowing water to melt oil only with the surface, there is no opportunity to further integrate the ability of plastic parts. Corrosion to the surface, to protect the surface quality of injection parts. Residual oil traces are mixed in water to expose bright surfaces. and then removed and dried for paint production.

At this time, we can also see the side covered with paste traces of oil removed from the surface, china injection molding parts filled plastic pots with water. It should be emphasized, clean the elastomer parts surface operation. Soaking the time of day that water is very important, general control in 1-3 seconds. A long time, the thermoplastic elastomer parts surface will matte white, too fast cleaning effect is not thorough enough. Therefore, depending on the elastomer parts, and come up with the best of the soaking time.

 The white thermoplastic elastomer parts matt surface are not easy to control

The water in the days of adding the right amount of cyclohexanone. In order to improve the ability of anti-white, easy-to-production operation control? Deployment of solvent and operating situation well, even in the dip after

thermoplastic elastomer parts do not need to put water. But directly and carefully placed in the mesa dry for fuel injector production has obtained satisfactory results. Since 2004, I plant often out oil products since the adoption of this approach has been the continuous production of more than 100 million pieces of no swap oil injector parts. Therefore, we are no longer worried about the weather, the release agent place too long.

Manufacturer experience sharing

I think suited to co-ordinate the Thermoplastic Elastomer. Injection production departments because encounter such problems, every department is always blaming each other. Perhaps this can not solve the problem. Do you want to make good Thermoplastic Elastomer plastic products, take care a lot and not only technology problems .but also management problems.