Method for producing weather-resistant oriented strand board by using full-eucalyptus leftover material

A technology of oriented strand board and leftover material, which is used in the pretreatment of molding materials, wood processing appliances, starch-derived adhesives, etc. It can solve the problems of producing weather-resistant oriented strand boards, etc. Good, good dispersion and weatherability effects

Active Publication Date: 2017-01-04
广西横县新威林板业有限公司
View PDF8 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The oriented strand board disclosed in the above-mentioned literature discloses the method of pressing the oriented strand board into oriented strand board by using the remaining rotary cut veneer scraps in the plywood production process as raw materials or the broken veneer strips produced durin

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing weather-resistant oriented strand board by using full-eucalyptus leftover material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] The method for producing weather-resistant oriented strand board from whole eucalyptus wood scraps comprises the following steps:

[0078] 1) The leftovers from the production of eucalyptus boards are separated from metal and stone, chipped, and simply screened, and then sent to the wood chip storage warehouse for transitional storage, and then sent to the veneer longitudinal shearing machine for length slicing by a conveyor, and the above-mentioned leftovers are cut along the longitudinal direction Cut into shavings with a length of 50-80 mm; transport the length-cut shavings to the veneer transverse shearing machine for width slicing, and cut the shavings into 5-20 mm wide shavings along the transverse direction; Transitional storage in the wet shavings silo; the moisture content of the wet shavings should be kept below 20% by weight;

[0079] The leftover material of above-mentioned production eucalyptus plank is the waste material that can not be utilized in the pro...

Embodiment 2

[0106] The method for producing weather-resistant oriented strand board from whole eucalyptus wood scraps comprises the following steps:

[0107] 1) The leftovers from the production of eucalyptus boards are separated from metal and stone, chipped, and simply screened, and then sent to the wood chip storage warehouse for transitional storage, and then sent to the veneer longitudinal shearing machine for length slicing by a conveyor, and the above-mentioned leftovers are cut along the longitudinal direction Cut into shavings with a length of 50-80 mm; transport the length-cut shavings to the veneer transverse shearing machine for width slicing, and cut the shavings into 5-20 mm wide shavings along the transverse direction; Transitional storage in the wet shavings silo; the moisture content of the wet shavings should be kept below 20% by weight;

[0108] The leftover material of above-mentioned production eucalyptus plank is the waste material that can not be utilized in the pro...

Embodiment 3

[0135] The method for producing weather-resistant oriented strand board from whole eucalyptus wood scraps comprises the following steps:

[0136] 1) The leftovers from the production of eucalyptus boards are separated from metal and stone, chipped, and simply screened, and then sent to the wood chip storage warehouse for transitional storage, and then sent to the veneer longitudinal shearing machine for length slicing by a conveyor, and the above-mentioned leftovers are cut along the longitudinal direction Cut into shavings with a length of 50-80 mm; transport the length-cut shavings to the veneer transverse shearing machine for width slicing, and cut the shavings into 5-20 mm wide shavings along the transverse direction; Transitional storage in the wet shavings silo; the moisture content of the wet shavings should be kept below 20% by weight;

[0137] The leftover material of above-mentioned production eucalyptus plank is the waste material that can not be utilized in the pro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Static bending strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a method for producing a weather-resistant oriented strand board by using a full-eucalyptus leftover material. The method includes material preparation, drying, peel and impurity removing, sorting storage, gluing of a surface layer and core layer, classified pavement, pre-hot pressing forming, facing sanding and other working procedures. The surface layer is coated with isocyanate sawdust powder composite adhesives, and the core layer is coated with weather-resistant composite urea-formaldehyde resin adhesives. Core layer wood shavings are divided into three layers of structures and comprise a core layer middle layer, a core layer upper surface layer and a core layer lower surface layer. The core layer middle layer is longitudinally laid, and the core layer upper surface layer, the core layer lower surface layer and a surface layer are transversely laid. According to the oriented strand board prepared through the method, the static bending intensity in the parallel direction is 31-40MPa, and the parallel elasticity modulus is 4580-4760MPa; and the vertical elasticity modulus is 1510-1790MPa, the 24 h thickness swelling rate of water absorption is 11%-16%, vertical nail-holding ability reaches up to 87800N, and the dimensional stability and reliability are good. Moreover, the oriented strand board prepared through the method has excellent weather resistance.

Description

technical field [0001] The invention belongs to the field of artificial board manufacture, in particular to a method for producing weather-resistant oriented strand board from whole eucalyptus wood scraps. Background technique [0002] Oriented strand board is one of the new varieties of particle board. When the shavings are paved and formed, the upper and lower surface layers of the oriented strand board will arrange the rubber-mixed shavings longitudinally according to the fiber direction, and the core layer shavings will be arranged horizontally to form a three-layer structure board embryo, which is then hot-pressed into an oriented strand board. The particle shape of this particle board requires a larger aspect ratio, and the thickness is slightly thicker than that of ordinary particle board. [0003] Oriented strand board is a log that is peeled and cut into slices with a certain geometric shape along the direction of the wood grain. The size of the slices is usually 4...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B27N3/02B27N3/10B27N3/14B27N1/02C09J161/32C09J103/10C09J11/04C09J11/06C09J11/08
CPCB27N1/0209B27N3/002B27N3/02B27N3/10B27N3/143C08K2201/011C08L2205/035C09J11/04C09J11/06C09J11/08C09J161/32C08L3/10C08L29/04C08L93/04C08K2003/2241
Inventor 陈正照
Owner 广西横县新威林板业有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap