There are many requirements for gluing in plywood, mainly including the following:
The amount of glue applied should be appropriate: too much glue will not only increase production costs, but also reduce the bonding strength, while too little glue will not be conducive to the formation of a glue film, and degumming will easily occur during use. Therefore, it is necessary to control the amount of glue applied so that it can achieve good bonding effect and reduce production costs.
Glue application speed and glue application uniformity: Glue application speed that is too fast or too slow may cause quality problems in the plywood. Applying glue too fast may result in insufficient glue penetration, while applying glue too slowly may result in too much glue being wasted. Therefore, it is necessary to control the glue application speed so that it can achieve good bonding effect and avoid waste. In addition, attention should also be paid to the uniformity of the glue application to ensure that each board can receive a uniform amount of glue.
Selection and use of adhesive glue: When applying glue, you should choose an adhesive glue with a relatively high content to increase the bonding strength. At the same time, when applying glue, you cannot pour glue directly on the surface of the board. Instead, use a paint brush to apply glue to ensure the uniformity of the glue application and prevent glue penetration.
Drying process: After gluing, you should wait for the glue to dry naturally. Do not use drying or exposure to speed up the drying in order to speed up the progress, otherwise it will affect the quality of the plywood.
It should be noted that different types of plywood may have different requirements for gluing. For example, flame-retardant plywood needs to pay attention to the size and uniformity of the amount of glue applied, while multi-layer boards need to pay attention to the method of gluing. and drying process, etc. Therefore, in actual production, specific gluing operations need to be carried out according to different plywood types and production process requirements.
