Manufacturing process for ultra light fiber board

Abstract

The invention discloses a manufacturing process for an ultra light fiber board. The method comprises the following steps of: peeling wood, cutting to obtain sheets, screening, washing, boiling, separating fibers, mixing and applying adhesive, drying and sorting, paving and forming, prepressing, performing hot-pressing, turning the board and cooling, sanding, inspecting and classifying, and packaging and putting in storage, wherein in the boiling step, the boiling material level is 1.6 to 3m, and the boiling temperature is 165 to 175 DEG C; in the step of separating the fibers, the wood sheets enter a mill through a ribbon spiral conveyor, molten waxes are fed into the mill simultaneously, the application amount is 5.0 to 7.0kg / m<3>, and the gap of an abrasive wheel is 0 to 4mm; and in the step of mixing and applying the adhesive, melamine modified urea resin adhesive is applied, the adhesive application amount is 195 to 210kg / m<3>, the adding amount of a curing agent is 1 to 2.5 percent based on the mass of absolute drying adhesive, and the curing agent is a mixture of ammonium chloride and a (commercially available) HA101 cross-linking agent in a mass ratio of 3:1. Moreover, a method for preparing the melamine modified urea resin adhesive used by manufacturing the ultra light fiber board is correspondingly provided for matching the manufacturing process.

Description

technical field [0001] The invention belongs to the field of man-made fiberboard manufacturing, and in particular relates to a manufacturing process of an ultra-light fiberboard. Background technique [0002] my country's medium density fiberboard (MDF) industry began to develop in the early 1980s, because of its moderate density (0.7~0.8 g / cm 3 ), superior performance, widely used in audio equipment, indoor and outdoor decoration, etc., occupies an important position in the wood-based panel industry. Since the invention of MDF, it has been widely used in the fields of furniture, interior decoration, construction, packaging, musical instruments, vehicles and shipbuilding due to its dense and uniform texture and excellent machining performance. With the development of MDF production equipment and production technology With the continuous development, its scope of use is becoming wider and wider. Replacing stainless steel or plastic with density fiberboard for double-sided d...

AI Technical Summary

Problems solved by technology

Since the 1990s, the industrial production of medium density fiberboard (MDF) has made great progress, and the development of new technology and new technology has also promoted the development and application of new MDF products; especially in recent years, high-density fiberboard for flooring has been developed successively. board and MDF boards with functions such as flame retardancy, water resistance, mildew resistance, etc., but generally speaking, at present, the artificial fiber board in the domestic market is mainly 70 type (density around 0.7 g / cm3) , there are also some 80-type (density around 0.8 g / cm3) and 80-type high-density boards, and 60-type (density around 0.6 g / cm3 ) and low-density fiberboard below type 60 are still blank