Perforated plant fiber board, its manufacturing method and equipment dedicated therefor

The invention relates to a porous plant fiber plate, relative preparation and special device. Wherein, the preparation comprises: inserting the sharp hollow punch head with inner sheath into the blank of plant fiber plate to be heated; using compress plate to compress it and attain the plates which has vertical through holes. Said plant fiber comprises the fiber or fiber beams made from wood or non-wood plant; the shape of through hole can be round, regular hexagon, and square, etc; the diameter of through hole is 10-200mm, the hole rate is 20-90%; said through holes are distantly or un-distantly arranged. The inventive plate can effectively reduce the wood consumption; reduce the weight; and support the application for vibration adsorption, sound insulation and thermal insulation. And it is not limited by thickness, to apply door and walls of building.