The use of animal glue and precautions
1 When using hand glue, depending on the type of animal glue, it is usually left to dry for 2~6 minutes after brushing. After the film is translucent, it will be glued to prevent the glue from overflowing.
2 Animal glue has a certain degree of moisture resistance, so it can be wiped with cotton yarn, gasoline or ethyl ester solvent when wild glue is used. The container and brush are washed with water and then washed with solvent.
3 animal glue because of its fast-drying, should not brush repeatedly, so as not to affect the brushing.
4 The amount of glue should be moderate, use manual brushing method of gluing, usually the amount of glue should be controlled at about 100g/m2, or according to the specific product adhesive strength requirements and the specific amount of glue can be based on the speed of paper and water temperature and temperature High and low decision. Less water-absorbing paper is less likely to be glued, and when the temperature is low, the glue is less, whereas the glue is more. After bonding, the size of the product to be adhered must have sufficient pressure to ensure that the two adherends are in full contact and pressed for at least 0.5 h before entering the next process.
5 When using machine adhesive, the amount of sizing should be controlled at the discharge port. The workpiece should not be degummed. If the sizing amount is too large, the glue overflows. If the sizing amount is too small, the adhesive strength will be affected. If the substrate is too thin, the sizing amount may be adjusted to avoid degumming at the discharge end.