Method and device for producing chaff and wood composite material
AssigneeUPM-Kymmene Oyj
InventorsLiisa Lehtinen, Sami Kirvesoja, Jari Nisula
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Abstract
The invention relates to a method and a device for producing chaff used in the production of a wood composite material. In accordance with the invention, adhesive laminate waste comprising adhesive material, glue and release material is arranged into chaff in multiple steps and the adhesive properties of the glue are killed.
Claims10
A method for producing chaff, wherein the adhesive laminate waste comprising adhesive material, glue and release material is arranged into chaff in multiple crushing steps, and the adhesive properties of the glue are neutralized by maintaining the temperature sufficiently low during crushing so that the temperature of the formed chaff is below 60° C. at the outlet of each step.
A method for producing a wood composite material, wherein adhesive laminate waste containing adhesive material, glue and release material is arranged into chaff in multiple crushing steps and adhesive properties of the glue are neutralized by maintaining the temperature sufficiently low during crushing so that the temperature of the chaff formed is below 60° C. at the outlet of each crushing step, predetermined additives are mixed with the chaff, and the chaff is arranged into a wood composite material product.
Dependencies are inferred from the claim text.