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Silica gel presses the right choice of forme and application
From;    Author:Stand originally

Because silica gel irons forme to iron course of study of print and distribute to appear later in our country, technology of existing a few preparation is not quite mature still, because this is in,choice and regular meeting of the classics in use process encounter a few problems, be opposite below a few typical issues that often appear undertake an analysis.

Silica gel irons the choice of forme
The hardness of silica gel layer of existing silica gel very hot forme all is in HS60 above, it is HS85±5 commonly. Because,this is if the hardness of silica gel layer is too low, changeful body leaves in high temperature, high pressure, the shearing force that makes layout melts aluminium to report is insufficient, affect thereby very hot imprint the effect. Accordingly, the hardness of the silicon sub that chooses usually should be more than HS80.
As hardness of silica gel layer rise, the resilience of silica gel layer can get commonly film opening to, and resilience is mattered to directly iron imprinted effect, if the resilience of silica gel layer is bad, inevitable meeting is brought about iron imprinted graph article brim denotative, cohere is not firm. The phenomenon waits by the side of occurrence wool. Because this is when very hot forme of choice silica gel, resilience should be caused take seriously.
It is to facilitate on electric heat board installation silica gel irons forme, the aluminium that silica gel irons the basic level of forme to choose ply to be 1—3mm commonly board. Silica gel layer and aluminium board the service life that the cohere intensity between matters to silica gel to iron forme directly, if silica gel layer and aluminium board the cohere intensity between is not quite high, criterion high temperature, high pressure issues easy craze. Accordingly, should choose silica gel layer and aluminium board between the silica gel with cohere higher intensity irons forme.

Very hot imprint the control of craft
1. Very hot imprint the control of temperature
Traditional report changes aluminous very hot forme to choose copper, zincograph, because the coefficient of thermal conductivity of copper and zinc is taller, because this is very hot,imprint temperature is 70—180 ℃ commonly. And silica gel very hot forme because the silicon sub coefficient of thermal conductivity of its surface is inferior, because this is very hot,should rise appropriately very hot imprint temperature, should iron than copper, zincograph usually imprint ℃ of temperature tall 30—50. Of course, the thermal conductivity of silica gel layer is better, very hot imprint temperature is adjustable lower, also exceed can economic specific power consumption. Accordingly, when choice silica gel irons forme, the silica gel with also should choose thermal conductivity better irons forme.

2. Very hot imprint the control of pressure
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