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Manufacturing method for non-adhesive wood fiber part

A production method and wood fiber technology, which can be used in household components, flat products, wood processing appliances, etc., can solve the application fields where glue-free fiber technology cannot realize industrial production and cannot meet high thickness requirements, and limit glue-free hard fiberboard Practical application and other issues, to achieve the effect of solving human hazards and environmental impact, increasing thickness and low cost

Inactive Publication Date: 2014-02-19
宁波新缅新材料研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the maximum nominal thickness of the adhesive-free hard fiberboard does not exceed 6 mm, which greatly limits the practical application of the adhesive-free hard fiberboard and cannot meet the application fields with high thickness requirements.
This is also the technical bottleneck of the current domestic and foreign glue-free fiber products that cannot be industrialized.
Due to the above deficiencies and other reasons, the glueless fiber technology has been unable to realize industrial production

Method used

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  • Manufacturing method for non-adhesive wood fiber part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment is used to make flat glue-free wood fiber molded boards, its format size is 1000mm * 1000mm, and its thickness is 30mm. The following are the specific manufacturing steps:

[0040] Step 1, drying process:

[0041] Wood fiber is used as raw material, and the wood fiber raw material is dried by airflow drying equipment, and its moisture content is controlled at 4% to 18%;

[0042] Step 2, pre-pressing process:

[0043] According to the product size of 1000mm×1000mm and thickness of 30mm, weigh 25kg of dry wood fiber raw material, use the wood-based panel paving mechanism to pave the loose dry wood fiber into a uniform and dense qualified slab that meets the process requirements, and then pass through continuous rollers Pre-pressing to obtain a preformed slab;

[0044] Step 3, microwave heating process:

[0045] Send the preformed slab into the microwave heating device, and use microwave heating for 1.5min to rapidly raise the temperature of the preforme...

Embodiment 2

[0054] This embodiment is used to make European-style furniture without bakelite fiber special-shaped pieces with three-dimensional patterns on the surface. Its approximate format size is 400mm×230mm, the minimum thickness position is about 50mm, and the maximum thickness position is about 120mm. The specific production steps are as follows:

[0055] Step 1, drying process:

[0056] Wood fiber is used as raw material, and the wood fiber raw material is dried by airflow drying equipment, and its moisture content is controlled at 4% to 18%;

[0057] Step 2, pre-pressing process:

[0058] According to the approximate format size of the workpiece 400mm×230mm, the minimum thickness position is about 50mm, and the maximum thickness position is about 120mm, weigh 5.2kg dry wood fiber raw material.

[0059] The combination mold is used to complete the pavement feeding, pre-pressing and hot-pressing forming processes. The combined mold includes a feeding die, a punching die, a formin...

Embodiment 3

[0071] This embodiment is used to make a bakelite-free fiber structural member with a circular arc surface, the size of which is 580mm×260mm, and the thickness is about 120mm. The following are the specific manufacturing steps:

[0072] Step 1, drying process:

[0073] Wood fiber is used as raw material, and the raw material is dried by airflow drying equipment, and its moisture content is controlled at 4% to 18%;

[0074] Step 2, pre-pressing process:

[0075] According to the format size of the structural parts 580mm×260mm, the thickness is about 120mm, weigh 16.8kg of dry wood fiber raw materials, and use the combined mold to complete the pavement feeding, pre-pressing and hot-pressing forming processes.

[0076] The combined mold includes a feeding die, a punching die, a forming die and an ejection mechanism, and the various mechanisms cooperate according to the needs of the molding action. The inner surface of the forming die cavity is an arc surface. The ejector mecha...

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Abstract

The invention discloses a manufacturing method for a non-adhesive wood fiber part. The manufacturing method comprises the following steps of: drying normal wood fiber serving as a raw material; forming and pre-pressing a blank to obtain a preformed blank; performing microwave heating treatment on the preformed blank to quickly raise the temperature of the blank to 70-150 DEG C; and finally placing in a forming mould for hot forming to obtain the non-adhesive wood fiber part with high thickness, high density and superior mechanical property, wherein the hot pressing temperature is 180-350 DEG C, the forming pressure is 35-110 kg / cm<2>, and the holding time is 5-60 minutes; the thickness of the part can reach 30-120 mm; the thickness limitation of the conventional non-adhesive wood fiber part is broken through; the actual application field of the manufacturing method is greatly expanded; the manufacturing method is particularly applicable to the field of furniture; low-cost and environmentally-friendly high-end irregularly-shaped furniture can be realized; and the manufacturing method has high economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the technical field of deep processing of wood materials, and in particular relates to a method for making glue-free wood fiber parts. Background technique [0002] Wood fiber is made from leftover small-diameter branch wood, wood processing residues or other non-woody plant fiber raw materials, according to the requirements of the fiber separation process and equipment, through peeling, chipping, screening and cleaning, and then thermally defibrated. . [0003] At present, the application field of wood fiber is limited to the production of medium density fiberboard, and its production process is divided into wet method and dry method. The production of fiberboard by the wet process consumes a lot of water resources and causes serious wastewater pollution problems, so it has been eliminated. The dry process currently used is to heat-press wood fibers to obtain MDF through a series of processes such as fiber drying, sizing, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/04B27N3/18B27N3/12
Inventor 张安将陈正光邵成峰宋洪祥吴克世
Owner 宁波新缅新材料研发有限公司