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Plywood Quality Inspection Of The Three Points

- Sep 05, 2017 -

In the production of plywood in each process are not the same degree of impact on the plywood quality, in order to facilitate grasp, summarized in the following areas:

1. Adhesive quality: Reflective for the use of synthetic resin adhesive adhesive function, the composition of the coordination and plastic technology, such as several side mite surface. In recent years, the domestic plywood with glue on the composition and transfer technology to carry out a lot of research work, which not only save a lot of chemical raw materials, reducing the cost of the product, so that the finished product function has improved, which is the embodiment of technological progress. In the production as long as the use of synthetic resin function is excellent, to meet the bonding strength, adhesive composition of each group is reasonable, the preparation of the adhesive function is stable, resin content and viscosity suitable for a long period of activity to ensure that the normal operation and finished products The target meets the requirements.

2. veneer quality: veneer quality, especially its appearance on the bonding strength of a great impact. Veneer quality in the wood section and veneer peeling of the process should be to meet the attention, to be excellent for wood softening treatment, control of good peeling conditions so that the objectives of the board at the best, together should pay attention to veneer water Rate and flatness.

3. Plywood gluing: before the pressure should pay attention to grasp the amount of sizing and slab aging two links. Glue is too large, the amount of high cost; and the adhesive layer is too thick, the internal stress increases, easy to glue; glue too small, is not conducive to glue moisture, glue layer will not complete. Aging time to fit, with reasonable changes in climate change. To complete the core sheet of the whole, cut the core stack, from the seam. Should pay attention to grasp the rubber pressure bar, buck rate, especially in the slab more water should pay attention.

In addition, the use of new technologies, new equipment, such as the use of efficient jet veneer dryer, core plate sewing machine, core plate leveling machine, complete sizing, billet, preload, hot pressing work, the choice of mechanized loading and unloading, Quickly closed hot press, etc., can accurately control the technical conditions, so that product quality is more secure.

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