Method of manufacturing a water resistant plywood bonded with high density polyethylene

摘要

Currently, wood adhesives used in domestic plywood manufacture mainly use amino resin (UF) resin and urea melamine (UMF) resin. These wood adhesives dissipate dehydrated glass form which affects the human body in thermo-pressed products. do. Especially, as the environmental regulations are strengthened all over the world, the US and Europe already produce products with the allowable concentration of 1ppm or less in the atmosphere, and institutionalize them. Therefore, it is essential to develop a resin synthesis manufacturing method or an alternative resin for fundamentally solving the free formaldehyde. In this background, the present invention relates to a method for producing an odorless plywood using high density polyethylene which is consumed most among domestic thermoplastic plastics, The object of the present invention is to reuse plastics and to impart high functionality to the manufacture of domestic plywood.;The wood-based board industry has recently faced environmental regulations and environmental issues around the world. The present invention relates to a method for producing a water-resistant plywood after re-heating HDPE film for food packaging or hot pressing using HDPE on a wood-based hardwood veneer, and according to the results of previous studies, the compatibility between hydrophilic wood and hydrophobic polypropylene In the present invention, the HDPE film penetrates into the radial texture on the radial cross section of the true and leafy veneer and the radial tissue on the radial cross section, And thus exhibits a strong adhesive force.;Therefore, when used high density polyethylene as a plywood adhesive, it is more economical than conventional urea resin or urea melamine resin or phenol resin, and has excellent water-resistant adhesive property. Therefore, it is at the same level as phenol resin and has no problem of formaldehyde dispersion. And can be used as a food packaging material.