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Method of producing fire retardant particleboard

阅读:486发布:2022-09-03

专利汇可以提供Method of producing fire retardant particleboard专利检索,专利查询,专利分析的服务。并且A process of producing fire retardant particleboard comprising forming courses of particleboard furnish and dry fire retardant chemical immediately under courses of fine furnish particles which form outer courses of the particleboard, consolidating the assembled particles under heat and pressure, and sanding off particles of the outer courses to expose the inner courses as faces of the board.,下面是Method of producing fire retardant particleboard专利的具体信息内容。

1. THE METHOD OF PRODUCING FIRE RETARDANT PARTICLE-BOARD WITH A MINIMUM OF FIRE RETARDANT MATERIAL, WHICH COMPRISES BLOWING PARTICLEBOARD FURNISH AND DRY FIRE RETARDANT CHEMICAL PARTICLES SUBSTANTIALLY PARALLEL TO A MOVING CAUL PLATE IN A DIRECTION OPPOSITE TO THE MOVEMENT THEREOF, THE DENSITY AND PARTICLE SIZE OF SAID PARTICLES BEING SUCH THAT THE FINEST FURNI-SH PARTICLES TRAVELS OUTWARDLY THE FARTHEST TO FORM A LOWER OUTER COURSE WHILE COARSER FURNISH AND CHEMICAL PARTICLES PROGRESSIVELY, ACCORDING TO PARTICLE SIZE AND DENSITY, DEPOSIT ON SAID OUTER COURSE TO FORM AN INNER COURSE, BLOWING ADDITIONAL PARTICLEBOARD FURNISH AND DRY FIRE RETARDANT CHEMICAL PARTICLES SUBSTANTIALLY PARALLEL TO THE CAUL PLATE IN THE DIRECTION OF MOVEMENT THEREOF, THE DENSITY AND PARTICLE SIZE OF SAID ADDITIONAL PARTICLES BEING SUCH TAHT THE COARSER FURNISH AND CHEMICAL PARTICLES TRAVEL OUTWARDLY PROGRESSIVELY, ACCORDING TO PARTICLE SIZE AND DENSITY, TO DEPOSIT ON THE INNER COURSE OF THE PREVIOUSLY-BLOWN PARTICLES AND THE FINER FURNISH PARTICLES TRAVEL OUTWARDLY THE FARTHEST TO FORM AN UPPER OUTER COURSE, SUBJECTING THE MATERIAL TO HEAT AND PRESSURE TO CONSOLIDATE ALL OF SAID PARTICLES INTO A BOARD, AND SANDING OFF PARTICLES OF THE OUTER COURSES TO EXPOSE THE PARTICLES OF SAID INNER COURSES AT FACES OF THE BOARD.
2. The method as claimed in claim 1 including depositing a core course of relatively coarse furnish particles on said first-mentioned inner course and then blowing said additional particleboard furnish and dry fire retardant chemical on said core course.
3. The method as claimed in claim 1 in which the fire retardant chemical is a compatible boron-containing compound.
4. The method as claimed in claim 1 in which the fire retardant chemical is Na2B8O13.4H2O.
5. The method as claimed in claim 1 in which the fire retardant chemical is sodium borate.
6. The method as claimed in claim 1 in which the fire retardant chemical is ammonium phosphate (monobasic).
7. The method as claimed in claim 1 in which the fire retardant chemical is ammonium phosphate (dibasic).
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