FIELD: wood processing.
SUBSTANCE: invention relates to compositions preventing phenolic paper from sticking to press plates in the production of laminated plywood. The composition preventing sticking of phenol paper during pressing includes diethylene glycol, an emulsifier and water, dosed into a dissolver, brought to a temperature of 80-100°C, with further addition of carnauba wax heated to a temperature of 80-100°C while stirring at a speed of 800-3000 rpm and aging for 10-60 minutes, in the following ratio of components: carnauba wax in the amount of 1-20 wt.%, diethylene glycol in the amount of 1-10 wt.%, emulsifier in the amount of 1 -10 wt.%, water in the amount of 60-97 wt.%.
EFFECT: producing a protective film on the surface of the phenolic paper, which makes it possible to prevent it from sticking to the press plates at the stage of lamination in the production of plywood.
1 cl, 1 tbl, 3 ex
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Authors
Dates
2023-06-28—Published
2023-03-23—Filed