When we use silicone molds, in order to save costs and improve work efficiency, of course, we hope that silicone molds can turn over many times and have a long service life. Then how can we make the growth of the life of silicone mold, the following 13 ways to ensure the growth of the life of silicone mold! High Mast Lights,High Mast Lights Pole,High Mast Light China Searun Solar Solution Co., Ltd. , https://www.searunsolar.com
Now Xiao Bian will take you to see the following 13 methods!
First, when making silicone molds using the infusion method, select the silicone with the appropriate hardness based on the fineness of the pattern.
Under normal circumstances:
When the hardness of silicone is 10-30 Shore, the higher the hardness, the better the quality.
When the silicone hardness exceeds 30 Shore, the higher the hardness, the worse the quality.
and so,
1. The pattern of simple products, anyway, easier to demoulding, so it is recommended to choose a larger hardness;
2. Fine-grained products, due to fear of damage to the product, the actual situation will generally choose a smaller hardness because the softer the better the mold release, but at the same time, the quality will be relatively biased.
However, we can still choose silica gel with a relatively high hardness point, as long as the mold line can be opened on the silicone mold, so as to facilitate demoulding, and secondly, it will not lead to rapid die retirement due to more mold release. Ultimately the purpose of extending the life of the silica gel.
Second, choose whether to fill or brush according to the size of the product.
If the size of this product is very large, it must be even more with a brush mold. Although it takes time and effort to save time and labor, it is very costly.
Because such large products use the mold, a waste of silicone to increase the cost, and second, the product too heavy will easily crushed the silicone mold resulting in deformation or cracking, but if you choose to brush the mold, then you can add several layers of gauze inside to enhance the mold The toughness and strength, together with the support of the outer mold, are not easily crushed or deformed.
Third, choose the right hardness silica gel according to the size of the product.
1. Smaller products, generally softer silicones are more suitable. Because the mold will be brittle when the silicone is too strong, it is easy to break the small parts of the product, which will also cause the mold is not durable.
2. Large-size products, such as stone cement products, are as hard and heavy as they are. If soft rubber is used, will the molds not be crushed more easily? Because silicone is too soft, its tensile strength and tear strength will be reduced, the resulting mold will be deformed, and its service life will naturally be reduced.
Fourth, stir the silicone and curing agent.
Otherwise, there will be dry or uneven curing, and this will cause the mold to be scrapped, and it should be avoided.
Fifth, vacuum pumping bubbles can also extend the life of the mold.
Do you think that a mold is full of holes and bubbles everywhere? Do you dare to say that this mold has good tear strength?
Sixth, increase the thickness of the silicone mold, which is the simplest method.
As we all know, the thicker the mold, the natural increase in tensile strength and tear resistance, and the too thin mold is very easy to tear and tear.
Seventh, resin products should be demoulded as soon as possible, and the mold inside is burned out
Because unsaturated resin and resin products are added with peroxide curing agent, a large amount of heat will be generated when the resin reacts. Generally, the curing time of the resin is
3 minutes, so after 3 minutes to demoulding as soon as possible, it can prevent the silicone mold from burning.
Eighth, quality control must be in place when purchasing silicone.
Some manufacturers add compounded silicone oil (a complex of silicone oil and white mineral oil) in the process of making silica gel to reduce costs, which can lead to severe silicone oil stencils, which can seriously affect the quality of silicone molds. And service life.
Ninth, in the process of making the mold, it is recommended not to add any silicone oil in the silicone.
Due to product changes, many people sometimes take the initiative to add silicone oil to the silicone to achieve the purpose of reducing the hardness of silica gel or dilute the viscosity of silica gel. Xiao Bian recommends not to add any silicone oil to silicone. Because the greater the amount of silicone oil added, the resulting mold will become softer, pulling and tearing strength will be reduced, silicone will naturally not be durable, and the service life will be reduced. If necessary, silicone oil should not exceed 5%-10%.
If the new project comes, the last batch of goods will not be used up. You can wait until a similar project is available in the future. This time, you can directly order the silicone with the appropriate hardness and viscosity, because the shelf life of Hongye Brand's silicone can be one year. Oh.
Tenth, do you think that the mold is finished and it's finished? Remember the card slot!
The friend of the brush mold must remember to make the card slot at the edge of the mould, easy to make the mould good, at the same time convenient to save and maintain.
Eleventh, external model, that is, protection model is also very important.
Outer mold can block the external force to prevent the deformation of the mold, otherwise I can easily get dirty and lose shape, attach a picture of the goods to make a silicone mold animated figure shows the figure out of shape
Twelfth, the completion of the mold is good, the preservation method is also very important
Every mold baby does not want to be squeezed out of shape, body shape (put a facial expression)
Then attach a picture of a bunch of molds that are squeezed together and put together.
This method of placement is really rough enough to make Xiao Bian can not bear to look straight (put an exaggerated expression)
The thirteenth and final step, when you have finished a beautiful silicone mold, wait 24 hours before putting the mold into production use, to stand the loneliness can stand the wait! When I was not fully matured and grown up, you let me start working. I'm sure I'll be a bit overwhelmed.