KR100249736B1 - Atomized resin binding method and system for making wood-shaving panels - Google Patents

Abstract

The present invention is directed to a method of providing wood sprays, glues and chemicals subjected to vigorous movement in a resin bonding apparatus, with heat and superheated pressure steam to provide a spray particle stream with uniform physical properties. The present invention relates to a spray resin bonding method for producing a wooden panel, comprising the step of treating the mixture.

Description

Resin bonding method and system for manufacturing wood planer panels

1 illustrates a schematic illustration of a conventional system for continuously compressing wood shaving panels;

2 illustrates a schematic illustration of a prior art resin bonding system for panel manufacture;

3 illustrates a schematic illustration of different parts of a system for successively manufacturing wood rye panels;

4 illustrates a schematic illustration of a resin bonding system for implementing the method according to the invention;

5 is a schematic side cross-sectional view illustrating a container for wood soybean processed steam in accordance with the present invention;

6 is a top cross sectional view illustrating the vessel connected to a vapor condensation separation apparatus.

The present invention relates to a spray resin bonding method and system for the manufacture of wood large rice panels.

Resin bonding methods for the manufacture of wood planers panels have already been known, which are carried out in a system which essentially comprises a metering hopper for metering wood planers obtained from dried wood. A continuous type of wood rice flour is fed to a ribbon balance suspended in a load cell. The balance is a glue consisting of a mixture of water and glue and a curing paraffin to maintain the dry glue / dry wood planer weight ratio constant as the operator adjusts the weight of the wood planner to be fed to the resin bonding device. The RPM of the pump that feeds the mixture is sent to an electronic processor.

In making panels, there are at least two systems commonly used in each panel manufacturing line: one system is used for the resin to bond the fine wood planks that form the surface of the panel, while the other system It is used for resins that bind a larger sized wooden rice ball to form the inner part.

Downstream of these systems there is provided an additional forming system comprising four forming apparatuses which are preferably arranged in line.

A first molding apparatus is provided for spreading a first layer of fine resin bond wood planks on a molding ribbon or web, while the second and third molding apparatuses have a resin bonding of larger particles. A fourth forming device is provided to form a final layer comprising fine particles of wood planers, while forming a second layer of wood planers.

The mattress thus formed is under a forming apparatus in a continuous compression apparatus, comprising two steel ribbons moving at the same speed as the forming web or ribbon and sliding on two plates heated to temperatures varying from 180 ° C to 240 ° C. The molded "mattress" is moved by means of continuously driven ribbons or webs.

Due to the combined influence of pressure and temperature, the resin adhesive wood planer mattress is fixed due to the curing of the resin to provide the wood planer panel.

On the other hand, this prior method is affected by several problems.

In particular, in winter, the mattress temperature is about 20 ° C. lower than in summer, requiring increased heat drying time, thus increasing the operating time of the system, in particular the floor thickness of the finished wood planer panel, 18 mm. To achieve this, the system requires increased system uptime from 4.8 sec / mm to 5.9 sec / mm.

A further problem is that the system must be shut down periodically to clean the resin and wood chips scale from the resin bonding device.

Another problem is that relatively low resin bonding efficiency and frictional overheating tend to cause scales to stick to or build up on these inner walls of the jacket, resulting in breakage of the machine, at about 5 ° C. to cool the resin bonding device jacket. It requires the use of water supplied from a working cooling system.

Moreover, the molding apparatuses mentioned are also blocked because they do not properly distribute the adhesive resin on the wood planers.

Another problem is the need for the use of expensive paraffin emulsions to reduce the amount of water absorbed by the finished product.

[Summary of invention]

Therefore, it is an object of the present invention to overcome the above mentioned problems by providing such a system and method which greatly reduces the hot air drying time, consequently greatly increases the production efficiency and does not interrupt the manufacturing process to clean the resin bonding and molding apparatus. It is.

In the scope of the above-mentioned object, the main object of the present invention is to provide a resin bonding method and system which enables a very large working efficiency while consequently improving the mechanical properties of the finished wood planer panel.

It is a further object of the present invention to provide such a resin bonding method and system that provides for improved spreading of the mattress by the molding device, with the resulting improved acceptable thickness of the raw panels at the outlet of the compression device. will be.

It is a further object of the present invention to provide such a method and system that does not require the use of any paraffin emulsion.

It is yet another object of the present invention to provide such a method and system that does not include chillers to cool the water circulation jacket of the resin bonding apparatus.

According to one improvement of the invention, the above mentioned objects and objects, as well as other objects, which will become more apparent below, provide for the use of a hot fluid, preferably comprising compressed steam, said fluid providing a wood planer panel It is achieved by an improved system for the manufacture of wood planer panels, which is characterized in that it is transferred to a resin bonding device to increase the temperature of the wood planers, glue materials and chemical auxiliaries which are to be mixed.

Additional features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments, though not exclusively, but illustrated directly in the accompanying drawings, rather than by way of limitation.

With reference to the accompanying drawings, and more particularly with reference to FIG. 2, a prior art resin bonding system for the manufacture of wood bamboo rice panels is typically a continuous series of wood bamboo rice dried on a ribbon scale 2 suspended from a loading chamber 3. It comprises a dried wooden rice ball metering hopper (1) to provide a positive flow.

The scale (2) is provided for continuously sending data relating to the weight of the wood planer to the electronics processing unit, which is supplied to the resin bonding device, which is a dry glue / dry wood planer as specified by the operator. In order to maintain the weight ratio constant, the RPM of the pump 5, which supplies the glue mixture, in particular water, glue and cured paraffin emulsion, is controlled.

In the layers of each mattress formed along the production line of wooden bamboo rice panels, one or more resin bonding systems of the type disclosed above are typically used.

Several resin devices are used for the resin to bond the fine wood planks that form the outer surface of the panel, and one or more of the resin bonding devices have a larger particle size to form the mattress or mattresses provided to form the inner part of the panel. It is used for resin for bonding the wood planers.

In the downstream section of the device disclosed above, a molding system 6 is provided which consists essentially of four molding devices 7, 8, 9, 10 arranged in alignment.

The first molding apparatus 7 is provided for spreading the first layer of the fine resin adhesive wood platter on the molding ribbon 11, while the second molding apparatus 8 and the third molding apparatus 9 are larger. A particle-sized layer is provided for forming the two resin adhesive wood planers, and finally, the fourth molding apparatus 10 is provided for forming the last layer of fine wood planers.

The mattress 12 thus formed is continuously under the forming apparatus comprising two steel webs or ribbons 14 which slide on the heating plate 15 at the same speed as the forming ribbon 11 inside the continuous compression apparatus 13. It is moved by means of the forming ribbon 11 which is driven by.

Due to the mixed influence of pressure and temperature, the resin-bonded wood-bubble mattress 12 is hardened due to the hardening of the resin to provide a finished wood-bubble panel.

However, as mentioned, the preceding manufacturing method is affected by several problems.

In particular, in winter, the temperature of the mattress 12 is about 20 ° C. lower than the summer time temperature, whereby 4.8 sec / mm to 5.9 sec to make the heat drying time and thus the bottom thickness of the finished wood planer panel 18 mm. / mm includes the corresponding increase in system uptime.

Referring to FIGS. 3, 4, 5 and 6, the spray resin bonding system and method according to the present invention is adapted to undergo vigorous movement provided by an agitator 16 operating substantially inside the resin bonding apparatus 4. It provides heat and additional dynamic vibration of evenly diffused properties to the mixture of wood planers, glue and chemical aids simultaneously.

In particular, the heat is supplied by injecting compressed steam (at a predetermined pressure from 0.1 to 13 bar) and, in a preferred embodiment, the steam can be predetermined by the operator (120-200 ° C.) It is superheated, temperature up, and also line-treated.

It is arranged perpendicular to the flow direction and from the inlet hopper 18 in the resin bonding apparatus near the upstream section of the injector for loading the glue mixture, with respect to the direction of mass travel when compressed by the stirrer 16. Preferably obtained by means of a steel injector 17 equipped with a nozzle about 300 mm apart and having an internal diameter of 8-10 mm.

The above-mentioned pre-treatment is not the only one, but according to a preferred embodiment the inner diameter In a suitable steel cylindrical vessel or turbomixer 19 having a height of = 350 mm, a height of about 600 mm and a thickness of about 10 mm.

This turbo mixing vessel 19 comprises two nozzles 20 and 21 arranged in contact with the deflection pins 22 and 23 in the vessel surface and the paper.

Furthermore, there is provided a condensate separation device 24 connected to the vessel, arranged upstream of the vessel, in which there is separated a steam portion which can be placed on the tube of the system.

More particularly, the nozzle 20 allows superheated vapor to be introduced into the vessel, while the nozzle 21 is provided for introducing several chemical aids or auxiliaries.

Due to the mixture of superheated steam and chemical aids, the provision of the aforementioned deflection pins 22 and 23 which are operated to separate the chemical aid from the superheated steam stream during the first step in which these aids are transferred to the steam treatment vessel. , Is executed in the central part of the container.

In particular, chemical auxiliaries comprise a surfactant 25, preferably ethylene and methylene glycol.

These aids are used to modify the surface conditions of the water to properly control the thermal balance of the water during different seasons in the compression process.

Moreover, catalyst material 26 is also used to accelerate curing of the glue bonds, and cleaning material 27 is also used.

The latter is used in particular for cleaning all the devices arranged downstream.

In addition, a waterproofing material 28 is used to provide the wood soybean panel with improved resistance to water.

From the sprayed mixture shaped as described above with uniform physical properties and conveyed through the injector 17 to the resin bonding device 4, by heat, condensation heat and momentum are transmitted to the dried wood planers, which are It is gradually included by the adhesive adhesive, as a result of the impact of violent movement, mutual slippage occurring between several materials introduced into the resin bonding apparatus 4.

The main characteristic of the present invention consists in the injection of superheated steam, which makes it possible to achieve substantially several great advantages.

First, when steam is introduced into the resin bonding machine, the steam expands and heats the adhesive mixture, giving more malleability.

Moreover, the steam expands the tree holes, allowing glue and other chemical aids to properly enter these holes.

Thus, improved adhesion efficiency is obtained, which will provide the finished wood planer panels with very good mechanical properties as well as strong resistance to aging and moisture.

Moreover, the vapor provides a visual spread of the chemical aid through the mattress without adversely affecting the catalyst of the adhesive resin.

The introduction of superheated steam into the resin bonding device provides good lubrication of the walls while preventing hot stains, which is used solely to cool the jacket of the resin bonding device, since tower water at 30 ° C. is used entirely. There is no need to use cooling water as needed.

Furthermore, by the steam gradually condensing on the inner wall of the cylindrical jacket 4 ′ of the resin bonding device 4, it is continuous by lubrication on the wood planar flow toward the outlet 29 in the molding place 6 direction. It is provided to operate the laminar tube.

One of the main advantages of the present invention is that the vapor provides a significant reduction in hot drying time.

In fact, superheated steam gives rise to a mattress temperature of about 20 ° C. with a corresponding increase in process efficiency of about 20%, in terms of the quantity or yield of panels made and in winter in a very beneficial manner.

An additional important aspect of the present invention is that the disclosed method also allows to achieve a large reduction of formaldehyde components of the finished product.

It is clear from the foregoing disclosure that the present invention fully achieves its intended purpose and goal.

The invention as disclosed is capable of several modifications and variations, all of which fall within the spirit of the invention.

Moreover, all details can be replaced by other technically equivalent factors.

In practicing the present invention, the materials used as well as the incidental size and shape may be any that is required if the panel is suitable for the intended use.

Claims (18)

The use of a high temperature fluid comprising compressed steam is provided, which is conveyed to a resin bonding device to increase the temperature of the wood planer material glue material and other chemical aids, which are mixed to provide a wood planer panel. Improved system for panel manufacturing. 2. The improved system of claim 1, wherein the system provides for the use of a hot steam injector, arranged perpendicular to the direction of travel of the wood planer material to be mixed in the resin bonding apparatus. 3. The compressed steam injector according to claim 2, wherein the compressed steam injector is arranged upstream of the injector means for loading the glue mixture, with respect to the direction of travel of the wood bamboo and the glue mixture, wherein the mixture is arranged along a spiral-like generatrix line. An improved system characterized by being driven by a threaded stirring means. 2. The improved system of claim 1, wherein when the steam flow expands through the resin bonding device, the steam flow delivers a dynamic pulse to wood chips and glue material in the resin bonding device. 2. The improved system of claim 1, wherein the superheated vapor is mixed with a chemical aid and the mixing is arranged upstream of the spray nozzle and then in a mixing vessel connected to a condensate separation apparatus. 6. The mixing vessel according to claim 5, wherein the mixing vessel is provided with a duct or steam nozzle arranged in contact with a wall for treating steam, the steam moving to the front of the second pipe arranged also in contact, and now two tubes. And wherein said chemical aid is mixed with said vapor in said vessel. 6. Deflecting fins as set forth in claim 5, wherein in said steam treatment vessel deflecting fins are provided to keep chemical aid separate from said vapor stream when incorporation of said vapor begins to provide an even mixing of said chemical aid and said vapor. Improved system, characterized in that arranged. The system of claim 1, wherein the system further comprises an injector having a pressure from 0.1 to 13 bar and adapted to inject superheated steam at a temperature from 120 ° C. to 200 ° C. 7. System for the manufacture of wooden planer panels. 2. A container according to claim 1, wherein the system comprises a container in which the surfactant material, the catalytic material, the cleaning and waterproofing material are transported, so as to form an automated mixture adapted for continuous delivery to the resin bonding device. Improved system for the manufacture of wood large rice panels, characterized in that. 10. The method of claim 9 wherein the spray adhesive imparts heat of condensation and momentum by impingement on a dry wood planer that is gradually saturated by the glue mixture under sliding force, mutual impact, and vigorous movement in the resin bonding device. System for the manufacture of wooden planer panels. The method of claim 1, wherein, within the system, steam is gradually condensed on the inner wall of the cylindrical jacket of the gluing device, thereby lubricating the resin-bonded wood planer facing the outlet arranged towards the forming site. An improved system for the manufacture of wood planer panels characterized by the operation of a continuous laminar meatus. 10. The improved system of claim 1, wherein the system further comprises cooling means for water cooling the resin bonding device. The method simultaneously supplies heat, and evenly distributed vibrations to a mixture of woody rice balls, glue and chemical aids subjected to vigorous movement made by an agitator operating in a resin bonding apparatus, and into the resin bonding apparatus, Providing said thermal and dynamic vibration by means of injection, wherein said steam is superheated upstream of said loading region of said glue mixture with respect to the direction of travel of said material when said stirrer is operated and pretreated. Spray Resin Adhesion Method For Wood Router Panel Manufacturing Made. 14. Appropriate cylindrical form according to claim 13, in which the process is loaded with a catalytic material, a cleaning and waterproofing material as well as a surfactant, preferably of steel, to provide a spray mixture which is subsequently introduced into the resin bonding device. Spraying resin bonding method for producing a wooden planer panel, comprising the step of pre-processing the superheated steam in the container. The method of claim 13, wherein the superheated steam enters the vessel through a nozzle, while the second nozzle is suitable for facilitating the introduction of the catalyst, cleaning material and waterproofing material as well as the surfactant into the vessel. Spray resin bonding method for the manufacture of wood large rice panel, characterized in that. The method of claim 13, wherein the method is further saturated gradually with the glue mixture under the effect of mutual collision and sliding forces generated by violent motion in the resin bonding device to provide a particle spray flow of even physical properties. Spraying the resin coating method for producing a wooden planer panel, characterized in that by impingement, to the wooden planer to be delivered, the heat of condensation and the momentum of the spray adhesive. 14. The method of claim 13, wherein the method further comprises operating by progressive condensation of the vapor at the inner wall of the cylindrical jacket of the resin bonding device, wherein a continuous laminar tube is placed on the resin adhesive wood planer stream toward the molding site direction outlet. Spray resin bonding method for the manufacture of wood large rice panel, characterized by having a lubricating action. 14. The steam according to claim 13, wherein the method, in its preferred aspect, is superheated and pretreated by one or more injectors with nozzles arranged perpendicular to the flow direction, at a short distance upstream of the loading site of the glue mixture. Spraying, and spraying resin bonding method for the manufacture of wood planers panel, characterized in that it comprises the step of operating at a temperature that can be fixed in advance in the full range of technically used values.