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The difference between silicone compound die and low-pressure perfusion

by:Bofeng     2020-11-04
Silica gel or the example of complex mode is using original create prototypes, according to the 3 d data and requirements under the vacuum state to make silicone mold, and casting in vacuum using PU materials, thereby to clone the same as the original sample copy of a more common way of processing. It is mainly used for plastic planks small batch customization, generally in dozens to hundreds of plastic planks, if in this way processing is more cost-effective. Low-pressure perfusion is a two component polyurethane material after mixing, in normal temperature and low pressure injection mould, fast after material of polymerization and crosslinking, chemical and physical processes such as fixed-line form products. With high efficiency, short production cycle, the advantages of low cost. Suitable for small batch trial production in the process of product development, and small batch production, the structure is relatively simple and large thick wall covering parts and uneven thickness products production.

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vacuum complex mode compared with the principle of low-pressure perfusion is similar, they are a prototype is made by hand or physical, again through the prototype to produce a silicone mold, and then through the silicon mold for bulk copy. General domestic silicone mold can only copy a dozen times, while foreign silicone mould service life a little bit longer. Is a difference between vacuum complex mode and low-pressure perfusion, mainly reflected in the two aspects:

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1. Effect in different objects: vacuum complex mode is mainly used for small bulk copy small plastic planks ( Such as ABS, PC, acrylic panel, etc. ) And low-pressure perfusion is used to copy the bulky plastic panel, such as bumper hand-board, such's volume is big, not suitable for to do with vacuum complex mode of process.

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2。 Silicone mold is different: the size of the relatively small size of silica gel complex mode is used to make the hand, the silicon mold made volume is small. When filled with low pressure, because the copy by hand. So in the production of silicone mold, mold the volume is very big and also is hard.

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above all, the silicone compound die and low-pressure perfusion of the main difference is that a copy of the planks different volume, the size of the silicone mold is different.

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