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Influence of environmental humidity and temperature on color steel composite board glue

点击次数:  更新时间:18/07/07 14:58:07 来源:www.qmygw.com关闭
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The good composite effect of color steel composite board adhesive is related to many conditions, among which the change of working environment is also a very important factor. That is to say, with the change of seasonal climate, in order to obtain ideal composite effect, it is necessary to make some fine adjustments to the application process of colored steel composite board glue.
To put it simply, the seasonal climate change that affects the combination is the change of the two major indexes of environmental humidity and temperature:
1. humidity
When the air is wet, the color steel composite glue often does not cure completely, that is, it is not completely dry, and the residual viscosity is large. in serious cases, even when peeling off the composite film, the phenomenon of wire drawing can be observed.
Secondly, moist air will condense on the upper rubber anilox roller, thus bringing water into the rubber basin。 with the passage of time, the glue will gradually change from transparent to chaotic and whitish, thus losing its binding effect。
2. temperature
In winter when the temperature is low, the glue will become sticky and the leveling will drop. When the multi-functional machine is running at high speed, a large number of bubbles are easily generated in the glue basin to accumulate on the glue surface and the edge of the gluing anilox roller. at this time, it may cause the transfer of empty bubbles and insufficient gluing amount, which affects the compound fastness.
In addition, due to the low temperature in winter, the temperature of the curing room differs greatly from the ambient temperature. if the heat preservation measures are not in place, the heat dissipation rate is much faster than that of the high temperature summer, which often makes the temperature in the curing room not reach the set temperature ( generally 50 ℃ ). Therefore, the curing effect is also affected to some extent. under the same curing time, the compound fastness may be lower than that in summer.
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