Silicone products show poor appearance, is a very difficult job, common is to show dark lines. What are the causes of dark lines in general?

-, why do silicone products show dark marks

1, silica gel raw materials

Due to the different characteristics of the original data of silicone products, the product ratio is different, so the understanding of external adverse phenomena, the appearance of the elements is still based on the distribution ratio of the amount of silica black and silicone resin in the product, because the original data is attributed to the semi-transparent white solid rubber, so in the mixing process, the mixing uniformity of the rubber and vulcanization agent depends on the quality of the rubber. And the elements of the poor appearance of the product are the above reasons!

2, silicone mold

The mold is the center of silicone products, and the material selection on the mold steel occupies the primary element, followed by the poor appearance in the processing process may be the deformation phenomenon of the mold with too many times of pressing, resulting in poor appearance of silicone products. Secondly, in the process of mold finishing, the accuracy of the mold selects the product's closing line and self-removing edge and side wheel Angle.

3, silicone products molding vulcanization

Molding vulcan process, the product's exhaust method and trapped gas stroke select the bulge phenomenon of silicone products, time and temperature distribution is not very likely to lead to the appearance of dark marks, in addition to the most important is the operation method of machine personnel and whitening conditions, in the final analysis, the most important thing in the processing process is still to see the wind, silicone products should be suitable for what kind of parameters equipped and so on

Second, silicone products show dark marks how to do

Silicone products have colorless, tasteless, endless characteristics, to change silicone products into colorful colors, you need to participate in the "color master", so the selection of color master must not show fault, assuming that the temperature of the color master is not, then basically silicone products have become waste products, because the color master should be integrated into silicone products for high temperature molding, At this time, the color separation masterbatch is melted at high temperature to make the silicone products discolor, assuming that the color masterbatch affects the entire production due to the temperature resistance function, the result is clear and clear, so the selection of the color masterbatch must be selected the most appropriate.

In the selection of silica gel data, it must be strict control, silica gel data, such as two different silicone data in the naked eye may be difficult to difference color difference and hardness, but in fact, there are still differences between the two, if the two batches of silicone data mixed molding, then after the molding quality inspection found a small color difference, it can not be shipped. Our quality inspection is very serious, about the color difference can only be dealt with by the method of defective products, so, in the selection of silica gel data must be clear without mixing, to know the source is very important, the head is wrong, the whole process behind can only be soy sauce.

The cutting process of silicone products should also be careful, because it is assumed that the cutting rubber material is too thick or too narrow, it will be more inconvenient in the cutting of silicone products, and it will also constitute the appearance of poor color after the molding of silicone products, even in the cutting process, but also to ensure the quality of the product.