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Some common problems when using silicone mold labeling solutions

Source:silicone products http://www.ketaili.net | Time: 2015/5/13 15:48:22 | Visit: 2462 | More about 《FAQ

When using liquid mold silicone compound die often we will encounter some problems, such as fewer bubbles, not curing, rolling over, today we together to discuss the common problem is what causes and how to avoid these problems.  


Ask the mold silicone rolling over less what reason be?


A: in the process of making mould add too much silicone oil, silicone oil destroyed the molecular weight of the silica gel, the mould will be rolling over to the phenomenon such as less durable. If do small decorative pattern more complex products, with high hardness of silica gel to open mold, can appear the phenomenon of fewer rolling over, because the silicone hard time will be very fragile, easily broken. On the contrary, if make building products with small hardness of silica gel to do the mold, the results also is not satisfied. Because the silicone is too soft, its tensile and tear strength will reduce, make the mould will change shape, so will reduce number of rolling over.


Ask the silicon mold made at oil what reason be?


A: mold silicone itself is not taking oil, appeared to take oil is because of the complex silicone oil is added in the operating process (silicone oil and white mineral oil complex ligand), because the white mineral oil is oil chemical products, not silicone oil.


Ask the silicon mold made poor resistance to tear what reason be?


A: because the customer in the process of making mould, in order to reduce the viscosity of the silica gel, the silica gel is easy to operation and a large amount of added silicone oil in the silica gel, this will make silicone is very soft, not resistant, pull, tear strength is reduced, the phenomenon of tension variation.


Ask die mold silicone appear to burn what reason be?


Answer: because of unsaturated resins and resin products with peroxide curing agent, reaction in the resin will produce a lot of heat, general resin curing time for 3 minutes, so after 3 minutes to release as soon as possible, to prevent the silicone mold won't produce the phenomenon that burn mode.


Ask the silicon mold made ageing resistance ability is bad what reason be?


Answer: in the process of making silicone mold, we suggest that the customer had better do not add any silicone oil, if necessary, silicone oil to add up to not more than 5% ~ 10%. Because the amount of silicone oil to add too much can destroy the molecular weight of silica gel, so the mold to produce not resistant to acid and alkali, not resistant to ageing phenomenon.


Ask the silicon mold made matte what reason be?


A: the phenomenon is not to copy products or model of grinding or polishing. Because in fact the model or the product itself is not enough smooth or perfect, so to copy products or model if without grinding or polishing, again good made of silicone mold will not beautiful, not smooth enough. Another is that playing release agent, not besmear brushs homogeneous can cause mould is not smooth.


Ask cured silicone mold parts do not stem what reason be?


A: mold silicone is by absorbing moisture in the air and curing, silica gel in the process of making the water boiled, without calling in just the right amount of moisture, can appear the phenomenon. Solution: this phenomenon does not belong to quality problems, but because of who I am without control water, improve the shelf life of silicone, long shelf life will appear some phenomenon, as long as in the use of silica gel, add 0.05% water, stir evenly can solve some conditions.


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