High-density polyethylene glued board producing method

Abstract

A method for manufacturing a HDPE wood plywood mainly includes: rolling dense pin holes on the cementing surface of a veneer; replacing urea formaldehyde, phenolic aldehyde and other adhesives with HDPE plastic film; laying up in the common conventional plywood lay-up method and only laying the HDPE film instead of the adhesives; heating and pressuring the lay-up on a hot press machine and then pressuring and cooling on a cold press machine. The problems that the HDPE is immiscible with the wood, and can not be taken for the adhesive of the wood are solved by applying the principle of mechanical locking; The heat loss and the time consumption of the hot press machine can be avoided when the lay-up is cooled, for pressing is carried out on the hot press machine and the cold press machine respectively. The plywood product has formaldehyde-pollution-free production, high strength, durability, weather resistance, acid and alkali resistance, high water resistance, good appearance and low price. The manufacturing process has no pollution, and is environment-friendly, energy-saving, efficient and simple.

Description

technical field [0001] The present invention relates to a method of producing wood plywood. Background technique [0002] At present, the adhesives of plywood (plywood, plywood, blockboard, composite wood floor, etc.) and building boards commonly used in interior decoration and furniture manufacturing are urea-formaldehyde and phenolic resins, which have the problem of formaldehyde release (except for outdoor building boards) ), and the release of formaldehyde is more serious during the production process, which endangers the health of consumers and producers, and has become a hot issue of concern in the whole society; isocyanate glued plywood has no formaldehyde release, but there are some Toxic substance pollution; building formwork acid, alkali, water is not very good; the application number is 2004100116451 " plywood with pinholes on the wood chip " patent application discloses a kind of use polyvinyl chloride (hereinafter referred to as PVC) as adhesive without Formald...

AI Technical Summary

Problems solved by technology

[0002] At present, the adhesives of plywood (plywood, plywood, blockboard, composite wood floor, etc.) and building boards commonly used in interior decoration and furniture manufacturing are urea-formaldehyde and phenolic resins, which have the problem of formaldehyde release (except for outdoor building boards) ), and the release of formaldehyde is more serious during the production process, which endangers the health of consumers and producers, and has become a hot issue of concern in the whole society; isocyanate glued plywood has no formaldehyde release, but there are some Toxic substance pollution; building formwork acid, alkali, water is not very good; the application number is 2004100116451 " plywood with pinholes on the wood chip " patent application discloses a kind of use polyvinyl chloride (hereinafter referred to as PVC) as adhesive without Plywood polluted by formaldehyde, etc., but the pressing and forming process in the production of plywood still uses the current common practice. The hot pressing of the slab, cooling and setting are completed on the same press, and the pressing temperature is also relatively high.

Usually, the heat source of plywood production mostly uses boilers, and the heating cost is very high.