Quality improvement of plywood products: veneer gluing 

Quality improvement of plywood products: veneer gluing

At present, the main adhesives used in the production of plywood are PF phenolic resin and UF urea-formaldehyde resin, among which urea-formaldehyde resin is the main one. The curing agent used in the preparation of UF resin is NH4CL, and the dosage is 0.4-1% of UF resin mass. The suitable active time and curing time are achieved. The required active time of the glue is 6-8 hours. When the temperature is high in summer, the activity of the glue is prolonged. Buffer and curing agent can be used together, PF adhesive does not need reinforcing agent before use, but if filler copolymer can be added, the toughness and strength of the adhesive layer can be improved in sizing. At present, roller sizing is mainly used in China, mainly because of its mature technology and simple structure. However, in the early stage, double roller sizing is not easy to control, and its efficiency is low. If four roller sizing is used, it is difficult to control the sizing volume and efficiency. The sizing machine can improve the sizing uniformity and control the sizing amount.

Keywords :

Quality improvement of plywood products: veneer gluing ,Searches related to veneer gluing ,
gluing veneer to plywood
,
better bond veneer glue,

heat activated veneer glue,

gluing veneer to solid wood,

gluing unbacked veneer,

working with veneer plywood,

iron on veneer,

how to veneer a door,

如无特殊说明,文章均为本站原创,转载请注明出处。If there are no special instructions, the articles are original, if you want to use or reproduce, please indicate the original source www.plywoodinspection.com,If you find that our article infringes on your rights and interests, please email us in time and we will delete it at the first time.

Check Also

UREA GLUES FOR WATERPROOF AND FIREPROOF PARTICLEABOARDS inspection checklist and quality control

UREA GLUES FOR WATERPROOF AND FIREPROOF PARTICLEABOARDS inspection checklist and quality control 如无特殊说明,文章均为本站原创,转载请注明出处。If there are …

Leave a Reply

Your email address will not be published. Required fields are marked *