What are characteristics that people should look for in plywood glues?
Plywood glues are chosen depending upon a variety of characteristics. For starters, only certain types of glues are moisture or water resistant. For plywood meant to be used outside, people will want to look for more moisture or water resistant glues. While it is still an important characteristic for interior usage, there is slightly more leeway in the type of glue used.
Secondly, plywood glues vary in temperature resistance. For example, certain types are designed to be used in high-temperature settings (exterior). Furthermore, while some may hold up very well in high-temperature settings, they could be extremely vulnerable to damage in low-temperature settings.
Lastly, plywood glues will vary greatly on durability and time expected to last. Highly durable glues may be more expensive, but could serve a greater purpose in the long run for construction projects or related work. On the other hand, an individual may settle for a cheaper alternative for a craft type item or something that is not needed to last.
What are the different types of plywood glues?
The following is an incomplete list of plywood glues that may be used. Again, their usage depends on the type of wood, temperature setting, presence of moisture, durability, etc. The main types of plywood glues are the following:
• Urea formaldehyde Used mainly on hardwood for interior or intermediate type bonding.
• Polyvinyl acetate This type can be made water and high-temperature resistant. It is typically used for edge jointing and veneering purposes.
• Melamine formaldehyde Used less often than the others on the list. However, when a high grade bond or weatherproofing is required (especially on top of urea formaldehyde glues), this is the type to use. This can also be used for decorative purposes.
• Phenol-formaldehyde Often used for exterior purposes, as it is resistant to a wide variety of conditions. It may also be used for veneer or paper overlay purposes.
• Resorcinol-formaldehyde This type of glue, like phenol-formaldehyde glues, is resistant to a wide variety of conditions. However, it can be more expensive and, therefore, limited to usage in special purposes.