United States Patent
US Patent 4505869: Method for manufacturing wood-like molded product
US 4505869 · granted 1985-03-19
Abstract
The present invention relates to a method for manufacturing wood-like molded products comprising the steps of preparing a fine powder of wood material solidified by a thermosetting resin and mixing the same with a resin. More particularly, it relates to a method for manufacturing a molded product having improved quality, and especially the advantages of both wood and plastic by eliminating water and wood vinegar contained in the wood chip aggregate to be mixed and by imparting a surface smoothness.
| Patent Number | 4505869 |
|---|---|
| Title | Method for manufacturing wood-like molded product |
| Filed | 1983-02-22 |
| Granted | 1985-03-19 |
| Inventor(s) | Nishibori; Sadao |
| Number of Claims | 12 |
Abstract
The present invention relates to a method for manufacturing wood-like molded products comprising the steps of preparing a fine powder of wood material solidified by a thermosetting resin and mixing the same with a resin. More particularly, it relates to a method for manufacturing a molded product having improved quality, and especially the advantages of both wood and plastic by eliminating water and wood vinegar contained in the wood chip aggregate to be mixed and by imparting a surface smoothness.
Claim 1
A method of manufacturing a shaped, synthetic wood-like product comprising sequentially: preparing an aggregate by mixing dry wood meal with a thermosetting urea resin, heating the mixture at a temperature of about 100.degree.-170.degree. C. until the resin is set, to form aggregate having a particle size of 100 mesh or more; reducing the water content of said aggregate to less than 5%, and maintaining said reduced water content during manufacturing; reducing possibility of formation, dissociation or volatilization of wood vinegar or acid gases by said reduced water content and neutralization of said aggregate with urea resin; mixing said aggregate with a thermoplastic resin binder; and heat molding said aggregate/binder mixture into a desired shape.
Claims
12 totalA method of manufacturing a shaped, synthetic wood-like product comprising sequentially: preparing an aggregate by mixing dry wood meal with a thermosetting urea resin, heating the mixture at a temperature of about 100.degree.-170.degree. C. until the resin is set, to form aggregate having a particle size of 100 mesh or more; reducing the water content of said aggregate to less than 5%, and maintaining said reduced water content during manufacturing; reducing possibility of formation, dissociation or volatilization of wood vinegar or acid gases by said reduced water content and neutralization of said aggregate with urea resin; mixing said aggregate with a thermoplastic resin binder; and heat molding said aggregate/binder mixture into a desired shape.