Ekstruder for fremstilling av en gipsplate

摘要

Method for making a board based on a binder comprises: a mixing a composition designed to form the board body with water; b) depositing the mixture on a moving support the mixture passing through an extruder forming a board, the extruder being subjected to vibrations; c) cutting the resulting board at least lengthwise. The extruder comprises a transverse extruding die (40) provided with an upper lip and a lower lip (38) which bears on its lower surface at least a vibrator (42). The invention further concerns a board based on a binder produced by the method and the use of such board, wherein the binder is cementitious, or based on gypsum plaster.