Hot melt adhesive particle bonding density board coating quantity list: quick check of parameters corresponding to 3 scenarios

How much glue is needed to bond the density board?

The surface of MDF is dense and smooth, with unclear fiber directionhot melt adhesive pelletsThe difficulty of bonding is higher than that of ordinary cardboard. The amount of glue applied is a key parameter – if there is less glue, it will not stick, and if there is more glue overflow, it will waste. Here are the reference coating amounts for three common scenarios.

• Scenario 1: MDF+MDF Flat PasteThe glue application amount is 120-180g/m ², the glue temperature is 170-180 ° C, and the opening time is 10-15 seconds. Suggest using medium to high viscosity models, such as Sunlife hot melt adhesive particles SL-368.
• Scenario 2: MDF+thin wood veneer edge sealingThe glue application amount is 80-120g/m ² (only for edge banding), the glue temperature is 160-170 ° C, and the opening time is 8-12 seconds. Thin wood veneer is prone to warping when heated, and the temperature should not be too high.
• Scenario 3: MDF+PVC edge bandingThe adhesive application amount is 100-150g/m ², and the adhesive temperature is 170-180 ° C. The surface energy of PVC is extremely low, and high initial adhesion hot melt adhesive particles are needed to ensure wetting and penetration.

Frequently Asked Questions (FAQ)

Q: How to deal with edge overflow after bonding the density board?

A: Hot melt adhesive particle overflow can be scraped off with a silicone scraper during semi curing, and after complete curing, it can be removed by heating and softening with a hot air gun. Do not scrape hard in a cold state, as it may damage the surface of the board.

Q: Is the debonding of the edge of the density board due to insufficient glue or incorrect glue type?

A: Both are possible. First check if the adhesive amount meets the standard, and then confirm if the adhesive type is high initial adhesion type (PVC/ABS edge banding must use high initial adhesion type).