Method for producing aldehyde-free soft board made of wheat straw

Abstract

A soft wheat straw board without aldehyde is prepared through breaking by 10-15 mm, drying, fine breaking by 3-8 mm, sorting, mixing with glue, mechanical spreading, pre-pressing, hot pressing, intermittent pressing, cutting for removing edges, and cooling.

Description

technical field

[0001] The invention relates to a method for manufacturing an formaldehyde-free wheat straw soft board. It belongs to the field of wood-based panel manufacturing. Background technique

[0002] At present, due to the protection of the environment and forest resources in various countries, the use of wood-based panels is gradually restricted, but the demand for wood-based panels in society is increasing. All countries have increased research on the use of crop straw to make wood-based panels. Formaldehyde-free wheat straw Soft board is a low-density wood-based board made of wheat straw. Contents of the invention

[0003] The purpose of the present invention is to provide a kind of manufacturing method of the non-formaldehyde wheat straw soft board that can be industrialized. Because crop straw is used as raw material, it effectively solves the defect of environmental pollution caused by wood-based panels.

[0004] Technical solution of the present inventio...

Examples

Embodiment 1

[0017] Embodiment 1, the manufacture method of formaldehyde-free wheat straw soft plate, its processing step is divided:

[0018] 1. Coarse crushing: Hammer crushing is adopted, and the mesh size of the screen is 15mm; the feeding requirements are uniform, and the feeding requirements of raw materials are as close as possible to continuous feeding of raw materials with close moisture content. A water nozzle is installed at the feeding inclined belt, which can humidify to a certain extent when the moisture content of the raw material is low.

[0019] 2. Drying (dryer CS-02-01): The heat transfer oil heats the air through the heat exchanger, and the hot air dries the coarsely crushed raw materials in the drying box. It can be adjusted by adjusting the oil temperature (120°C), air temperature ( 90°C), air volume (100%) and adjusting the speed of the mesh belt to control the drying degree and moisture content of the raw material. The "S" shape conveying mesh belt that can be adjus...

Embodiment 2

[0029] Embodiment 2, the manufacture method of formaldehyde-free wheat straw soft plate, its processing step is divided:

[0030] 1. Coarse crushing: Hammer crushing is adopted, and the mesh size of the screen is 10mm; the feeding requirements are uniform, and the feeding requirements of raw materials are as close as possible to continuous feeding of raw materials with close moisture content. A water nozzle is installed at the feeding inclined belt, which can humidify to a certain extent when the moisture content of the raw material is low.

[0031] 2. Drying (dryer CS-02-01): The heat transfer oil heats the air through the heat exchanger, and the hot air dries the coarsely crushed raw materials in the drying box. It can be adjusted by adjusting the oil temperature (50°C), air temperature ( 40°C), air volume (10%) and adjusting the speed of the mesh belt to control the drying degree and moisture content of the raw material. The "S" shape conveying mesh belt that can be adjuste...

technical field

[0001] The invention relates to a method for manufacturing an formaldehyde-free wheat straw soft board. It belongs to the field of wood-based panel manufacturing. Background technique

[0002] At present, due to the protection of the environment and forest resources in various countries, the use of wood-based panels is gradually restricted, but the demand for wood-based panels in society is increasing. All countries have increased research on the use of crop straw to make wood-based panels. Formaldehyde-free wheat straw Soft board is a low-density wood-based board made of wheat straw. Contents of the invention

[0003] The purpose of the present invention is to provide a kind of manufacturing method of the non-formaldehyde wheat straw soft board that can be industrialized. Because crop straw is used as raw material, it effectively solves the defect of environmental pollution caused by wood-based panels.

[0004] Technical solution of the present inventio...

Examples

Embodiment 1

[0017] Embodiment 1, the manufacture method of formaldehyde-free wheat straw soft plate, its processing step is divided:

[0018] 1. Coarse crushing: Hammer crushing is adopted, and the mesh size of the screen is 15mm; the feeding requirements are uniform, and the feeding requirements of raw materials are as close as possible to continuous feeding of raw materials with close moisture content. A water nozzle is installed at the feeding inclined belt, which can humidify to a certain extent when the moisture content of the raw material is low.

[0019] 2. Drying (dryer CS-02-01): The heat transfer oil heats the air through the heat exchanger, and the hot air dries the coarsely crushed raw materials in the drying box. It can be adjusted by adjusting the oil temperature (120°C), air temperature ( 90°C), air volume (100%) and adjusting the speed of the mesh belt to control the drying degree and moisture content of the raw material. The "S" shape conveying mesh belt that can be adjus...

Embodiment 2

[0029] Embodiment 2, the manufacture method of formaldehyde-free wheat straw soft plate, its processing step is divided:

[0030] 1. Coarse crushing: Hammer crushing is adopted, and the mesh size of the screen is 10mm; the feeding requirements are uniform, and the feeding requirements of raw materials are as close as possible to continuous feeding of raw materials with close moisture content. A water nozzle is installed at the feeding inclined belt, which can humidify to a certain extent when the moisture content of the raw material is low.

[0031] 2. Drying (dryer CS-02-01): The heat transfer oil heats the air through the heat exchanger, and the hot air dries the coarsely crushed raw materials in the drying box. It can be adjusted by adjusting the oil temperature (50°C), air temperature ( 40°C), air volume (10%) and adjusting the speed of the mesh belt to control the drying degree and moisture content of the raw material. The "S" shape conveying mesh belt that can be adjuste...