Process for producing directly mold-pressed fiber board

Abstract

The invention belongs to the technical field of production of artificial boards, and relates to a process for producing a novel mold-pressed door board base material, in particular to a process for producing a mold-pressed fiber board by controlling the density distribution and fiber morphology of the cross section of the fiber board. According to the technical scheme, fibers treated by the hot grinding process are screened by a multi-layer sieve on the basis that the original equipment and the traditional process are not changed, and fibers in the following states are selected and treated by the next process, namely fibers which do not pass through a sieve pore with the pore diameter of 0.8mm account for 10 to 20 percent of the total mass of the fibers, fibers which pass through the sieve pore with the pore diameter of 0.8mm but do not pass through a sieve pore with the pore diameter of 0.125mm account for 60 to 80 percent of the total mass of the fibers, and fibers which pass through the sieve pore with the pore diameter of 0.125mm account for less than 10 percent of the total mass of the fibers. Through the technical scheme, interweaving performance among the fibers can be enhanced, the plasticity and flexibility of the board are improved, the requirement of direct mold pressing is met, and the phenomena of layering and cracking during mold pressing are avoided.

Description

technical field [0001] The invention belongs to the technical field of wood-based panel production, and relates to a production process for a novel molded door panel base material, in particular to a production process for controlling the cross-sectional density distribution and fiber shape of a fiberboard for molding. Background technique [0002] The base material of engraved and milled door panels is mostly fiberboard with a thickness of more than 4mm. Due to the thickness limit, the fiberboard with a thickness of less than 4mm does not have a strong three-dimensional effect after engraving and milling, so it is rarely suitable for the processing of decorative doors. Although the base material of the engraved and milled door panel with a thickness of more than 4mm can be engraved and milled into various three-dimensional patterns, it is time-consuming and labor-intensive, and it will cause waste of raw materials. The fiberboard for molding processing with low cost, outstan...

AI Technical Summary

Problems solved by technology

[0002] The base material of engraved and milled door panels is mostly fiberboard with a thickness of more than 4mm. Due to the thickness limit of the fiberboard below 4mm, the three-dimensional effect is not strong after engraving and milling, so it is rarely suitable for the processing of decorative doors.

Although the base material of the engraved and milled door panel with a thickness of more than 4mm can be engraved and milled into various three-dimensional patterns, it is time-consuming and labor-intensive, and it will cause waste of raw materials. The fiberboard for molding processing with low cost, outstanding three-dimensional effect of the pattern, and strong processing adaptability came into being. pregnancy

At present, the fiberboard for molding processing on the market needs to be soaked, softened and dried in a special softening solution before it can be used for molding and making decorative doors. If it is not soaked and softened in a special softening solution, it is easy to mold on the board. There are cracks and cracks at the position, and even problems such as bubbling and delamination of the board during the molding process

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