As a common man-made board, plywood is widely used in furniture manufacturing, building formwork, interior decoration and other fields. However, if it is not properly controlled during production or use, plywood is prone to debonding, which not only affects the appearance, but also reduces the structural strength and shortens the service life.
1. Common causes of plywood debonding
- Adhesive quality issues:
Using adhesives that are inferior, expired, or incompatible with the substrate will result in insufficient adhesion, and peeling and debonding may easily occur during use. - Improper
gluing process If the pressure is insufficient, the temperature is uneven, the hot pressing time is insufficient or the glue is unevenly applied during the gluing process, it will affect the curing effect of the glue and cause partial or overall debonding. - The moisture content of wood is too high
. If the wood is not fully dried, the moisture content is too high, which not only affects the penetration and curing of the adhesive, but also easily causes stress cracking due to internal shrinkage of the wood, eventually leading to failure of the glue layer. - is used or stored
in a harsh environment such as humidity, high temperature, exposure to the sun, or frequent alternation of hot and cold for a long time, the adhesive will easily age, crack or soften, eventually causing the adhesive layer to crack and peel.
2. Countermeasures for plywood debonding
- When choosing high-quality adhesives,
you should choose adhesives with stable performance and suitable for wood substrates. Avoid using counterfeit or expired products to ensure bonding strength and weather resistance. - Strictly control the production process parameters
in the hot pressing process. The pressure intensity, temperature and holding time should be reasonably set according to the performance characteristics of the adhesive to ensure that the adhesive layer fully reacts and cures evenly. - Reduce the moisture content of wood to a reasonable range.
Dry the wood before production. It is recommended to control the moisture content between 8% and 12% to ensure a stable physical and chemical bond between the glue layer and the wood layer. - Optimize the storage and use environment of the product.
Finished plywood should avoid long-term exposure to moisture, high temperature or direct sunlight. If necessary, moisture-proof and sun-proof packaging or storage measures can be taken to delay aging.
3. Summary and Suggestions
The debonding problem of plywood can be improved through scientific material selection, standardized processes, and reasonable environmental control. For manufacturers, establishing a quality traceability system and strengthening production process monitoring are the keys to improving product stability and customer satisfaction. For end users, attention should be paid to the use environment and regular inspections and maintenance should be performed to extend the service life of the product.
Regarding the debonding problem of plywood, we are well aware that high-quality adhesives are the key to ensuring the structural stability of the board. PUGLUE can provide customers with a variety of high-performance board glues suitable for wood composite processing , including polyurethane glue, phenolic glue, water-based wood glue, etc., with the following advantages:
- High bonding strength : suitable for all kinds of soft and hard wood, the glue layer is firm and not easy to crack after hot pressing;
- Strong water and weather resistance : meets the needs of long-term use in outdoor, humid or high temperature environments;
- Fast curing and good process compatibility : adaptable to various existing production processes such as hot pressing and cold pressing;
- Green and environmentally friendly : in line with environmental standards, low VOC emission, suitable for export and high-end custom furniture applications.
We not only provide stable and reliable glue products, but also provide customers with customized technical support and process optimization suggestions to help you eliminate the risk of debonding from the source and improve product quality and production efficiency .
