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Bubbles appear in composite products

Source： Time：2017-06-08 16:50:50 views：

1. causes
(1) when the pressure roller is used for too long or improper maintenance, it will cause partial corrosion or damage to the surface of the roller. When the composite film passes through the composite roller, the corrosion or damage parts are not affected by the pressure of the press roller, forming bubbles;
(2) the solvent contains high content of active hydrogen, and the reaction emits carbon dioxide to form bubbles;
(3) when the coating is lower than a certain limit, it is easy to form bubbles.
2. solutions
(1) change roller or repair;
(2) control the purity of the solvent;
(3) washing, treating or replacing the coating roll.

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