US 2018/0015637 A1Published application

Method of manufacturing crop straw fiber board

AssigneeShanghai Zhensen Wood-Working Machinery Co., Ltd

InventorsZhencai ZHANG, Tao ZHANG

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Abstract

A method of manufacturing crop straw fiber board includes the following steps: (1) mashing and choosing the straws with the length of 10-40 mm and the moisture content of 20%-30% as raw materials; (2) sending the raw materials into a digester (5) to digest and soften the straws; (3) sending the raw materials into a defiberator (7) and grinding to obtain straw fibers; (4) sending the straw fibers into a liquid applying system to mix with the adhesive, then drying with hot wind; (5) paving the straw fibers, then pre-pressing to obtain a plate blank with the thickness of 30-180 mm; (6) sending the plate blank into No. 1 hot press (8) to dehydrate; (7) sending the plate blank to No. 2 hot press (9) to adhere the plate blank; (8) sending the plate blank to No. 3 cold press (10) to shape the plate blank; (9) trimming and sanding the plate blank to obtain the fiberboard. Any crop straws could be used for the method.

Claims7

Dependent claims

A method of manufacturing crop straw fiber board, wherein the method comprises:

(1) mashing straws and choosing the straws which have a length of 10 mm to 40 mm and moisture content of 20% to 30% as raw materials;
(2) sending the raw materials into a digester to digest and soften the raw materials;
(3) sending the raw materials into a defiberator to grind the raw materials and obtain straw fibers;
(4) sending the straw fibers into a liquid applying system to mix the straw fibers with an adhesive and drying the straw fibers with hot wind, wherein the adhesive is formaldehyde-free artificial board adhesive;
(5) continuing paving the straw fibers, then pre-pressing the straw fibers to obtain a plate blank with thickness of 30 mm to 180 mm;
(6) sending the plate blank into a first hot press to dehydrate the plate blank by hot pressing;
(7) sending the plate blank sent from the first hot press into a second hot press to adhere the plate blank by hot-pressing;
(8) sending the plate blank from the second hot press into a cold press to shape the plate blank by cold-pressing;
and
(9) trimming and sanding the plate blank sent from the cold press to make the fiber board.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/536,111Filed 10 Nov 2015
Priority: CN 201410774745.316 Dec 2014
Published: 18 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B27N 3/04
Manufacture of substantially flat articles, e.g. boards, from particles or fibres: from fibres
B27N 1/0245
With the stirrers rotating about an horizontal axis, e.g. in consecutive casings: with a single stirrer shaft
B27N 3/143
Distributing or orienting the particles or fibres: orienting the particles or fibres
B27D 1/08
To produce plywood or articles made therefrom; Plywood sheets: manufacture of shaped articles; Presses specially designed therefor