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Factors affecting the effect of jigsaw glue-Shanghai Zhen Niu Chemical Co., Ltd.
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Factors affecting the effect of jigsaw glue
Time:2019-07-26 13:20:26    Page view (974)

Factors affecting the effect of jigsaw glue

1. Substrate surface treatment that affects the bonding effect of the glue

    The surface treatment of the substrate should be carried out within 24 hours before the glue is applied. A good quality surface will achieve the close contact of the substrate and the fineness of the glue line.
2. The amount of cloth that affects the bonding effect of the glue
The substrate is softwood or hardwood, and is generally coated on one side, and the amount of the cloth is 200-300 g/m2. A suitable amount of cloth should be such that when the glue line is squeezed, the extruded glue is continuously uniform in the form of beads or thin lines.
3. The moisture content of the substrate that affects the bonding effect of the glue
After the natural wood has been rehydrated, the moisture content should be controlled within 8-12%. Excessive water content is not conducive to the penetration and solidification of the glue; when the moisture content of the wood is less than 8%, it may cause excessive penetration of wood and cause cracking of the bonding surface, which may not achieve good bonding strength. And may cause defects in the glue line, such as the glue line sinking or convex.
4. The pressure and pressing time of the factors affecting the bonding effect of the glue
Adequate pressure and press time must be guaranteed. The proper pressure is beneficial to the penetration of the glue and the formation of the ideal glue line; sufficient pressing time can ensure that after the pressure is released, the glue has sufficient strength to resist the stress and external factors of the substrate itself.

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