Document Type and Number:
Japanese Patent JPS4926509
Kind Code:
B1
Abstract:
An inorganic fiber board having improved high resistance to splitting the board parallel to the plane of the board and an apparent density of from about 0.3 g/cm3 to 1.0 g/cm3 is produced by mixing 100 weight parts of an inorganic material consisting of 40-98 weight parts rock wool or slag wool, 2-30 weight parts asbestos and 0-50 weight parts of an inorganic filler with a binder of an aqueous emulsion of 3-25 weight parts (based on 100 weight parts of inorganic materials) of a thermosetting resin and 0.3-10 weight parts of a thermoplastic vinyl resin to obtain a slurry; dewatering the slurry on the screen to obtain a wet laid mat; and then drying and curing the mat to convert the thermosetting resin to an insoluble and infusible state. A surface decorated board is obtained by mixing vermiculite particles in the inorganic material. Another embodiment of a surface decorated board having a fine uneven crepe like pattern is obtained by rubbing the surface of a wet laid mat and applying suction to the other side of the mat repeatedly.
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Application Number:
JP6621870A
Publication Date:
July 09, 1974
Filing Date:
July 29, 1970
Export Citation:
International Classes:
D21H13/36; C04B26/12; D21H27/02; (IPC1-7): D21H3/36