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Silicone Mold Manufacturing Frequently Asked Question

1. Why mold silicone has low frequency of demolding?
In the mold production process to add too much silicone oil, silicone oil damaged the molecular weight of silicone, so the mold will appear low durability. If the small pieces of product patterns to more complex products, with a large hardness of silicone to open mode, there will be a small number of turn the mold, because the silicone will be very brittle, easy to break. On the contrary, if you do to build products with a small hardness of silicone mold, the results will also be unsatisfactory. Because the silica gel is too soft, its tensile strength and tear strength will be reduced, the mold will be out of deformation, so the number of turn the mold will be reduced. Mold silicone itself is very good quality, good or bad silicone is not only suitable for and not suitable. We have to use the size of the product for the hardness of silica gel to produce mold will not happen this situation.
Silicone mold demolding
2. Why mold silicone will appear burning phenomenon?
Because the unsaturated resin and resin products after the peroxide curing agent in the case of resin reaction will produce a lot of heat. The general resin curing time is 3 minutes, so after 3 minutes stripping as soon as possible to prevent the silicone mold. In this way, there will not resulting in burning phenomenon.

3. Mold silicone filling and split mold production method:
Split mold or film mold of operation: the vacuum pumped silica gel to brushing or perfusion method for construction. If you are doing film mold or slice mold using brushing methods, before brushing you want to copy the product or model coated with a layer of release agent or release agent, and then brushing the silicone in the product (Note : Be sure to brush evenly). Wait 30 minutes later, the surface of a layer of gauze or glass fiber cloth to increase the strength, and then coated with a second layer of silica gel, when silicone drying, do the outer mold, the outer mold can be used Gypsum or resin and other materials.

The operation of injection molding and perfusion mold: Irrigation or perfusion mold, is used for relatively smooth or simple product, that is, to enclose the copy product or model with a plastic sheet or glass, the vacuum pumped silica gel directly into the top of the product. Until the silicone drying molding, remove the product, the mold on the molding (Note: the general use of infusion mold is relatively soft to do silicone mold, so stripping easier, will not damage the inside product of silicone mold). The above is entire process of the use and operation of silicone molds.
Silicone injection molding

4. Why mold silicone surface is dry but inside is wet?
Mold silicone is condensed silicone. It is by absorbing moisture in the air to curdle, the water of silicone evaporated in the production process, and not transferred to the appropriate amount of water, this phenomenon will occur. Solution: This phenomenon does not belong to product quality problems, but because there is no control of water, enhancing the shelf life of silica gel and long-term shelf lives cause these phenomenon. As long as the use of silica gel, the appropriate amount of 0.05% water, stir evenly can solve these situation.

5. Why the mold silicone will appear the phenomenon of poor tensile strength?
Because customers in the process of making molds, in order to reduce the viscosity of silica gel, so that easy operation of silica gel in a large number of silicone oil added, it will make the silicone becomes very soft, resulting in intolerance, tear strength, Pull the phenomenon of deterioration, resulting in mold is not durable, short life, turning the number of small number of phenomena.

6. Why the silicone mold will appear to take oil situation?
Mold silicone itself will not take the oil, appears to take the oil because in the operation process to add a complex silicone oil (silicone oil and white mineral oil complex ligand), because the white mineral oil is a petrochemical products, not silicone oil.

7. Why the silicone mold will have intolerance, impatience aging phenomenon?
In the production of silicone molds, we recommend that customers do not add any silicone oil, if necessary, the maximum amount of silicone oil added not more than 5% to 10%. Because the excessive addition of silicone oil will destroy the molecular weight of silica gel, so the mold will be made out of intolerance, impatience aging phenomenon.

8. Why do silicone mold has traces and stripes on the surface?
This occurs when the product or model to be copied is not polished or polished. Because in fact the model or the product itself is not smooth or perfect, so to copy the product or model without grinding or polishing, even the best silicone mold will do not beautiful, not smooth. There is also a situation that, when playing mold release agent, not even brushing will cause mold is not smooth.

9. Do you know the wonderful usages of mold silicone?
Mold silicone is mainly used for toys, gift industry, craft gift industry, furniture decoration and decoration industry, character reproduction, architectural decoration and decoration industry, resin handicraft industry, unsaturated resin handicraft industry, candle craft, plastic toy industry, gift stationery industry, Craft gift industry, mold manufacturing industry, glass industrial products, simulation of animal and plant sculpture, Buddha carving handicrafts and other industries copy and mold production.

Mainly used in toys, gifts, fine patterns of products; for the mold, pouring mold products, glass technology, lighting, candles, characters copy production molds, large products, open-piece die, relief, Buddha, craft gift Production of molds, soles model, perfusion mold, sand casting.
Mold silica gel for a variety of specific operations are also different, to achieve what the requirements must be based on a variety of different parameters of specific operations.

10. How to clean the silicone mold?
We are using sandblasting processing methods to clean general production mold, first select the appropriate comparison of mold sand (according to the shape of silica gel mold lay), and then import the sand mold into sand molding machine, and then also the production of silicone products Mold into the blasting machine, with blasting head aligned silicone mold production mold cavity, and then gradually by the cavity of the order of sandblasting.

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