CN117962052A

CN117962052A - Skirting line coated with carbonized surface layer and preparation method and preparation equipment thereof

Info

Publication number: CN117962052A
Application number: CN202410375107.8A
Authority: CN
Inventors: 刘彬彬; 钟家洲
Original assignee: Zhejiang Lingge Wood Co ltd
Current assignee: Zhejiang Lingge Wood Co ltd
Priority date: 2024-03-29
Filing date: 2024-03-29
Publication date: 2024-05-03

Abstract

The application relates to the technical field of skirting line products, and discloses a skirting line coated with a carbonization surface layer, a preparation method and preparation equipment thereof. The solid wood skirting line has lower raw material processing loss and higher yield, and can reduce the processing energy consumption required in the production process; meanwhile, the superficial densified carbonized layer and other parts belong to different parts of the same wood, and the superficial densified carbonized layer and the other parts are naturally connected through fibers, so that the problem of falling of a waterproof and mildew-proof surface layer does not exist.

Description

Skirting line coated with carbonized surface layer and preparation method and preparation equipment thereof

Technical Field

The invention relates to the technical field of skirting line products, in particular to a carbonized surface layer coated solid wood skirting line; the invention also relates to a preparation method and preparation equipment of the skirting line.

Background

Indoor environment or geothermal environment in coastal areas, and the like, carbonization treatment is needed to be carried out on the solid wood skirting line so as to improve the stability of the solid wood skirting line to a certain extent, and the problems of serious dimensional change, deformation, mildew, decay and the like in the use process are avoided.

Because of the relatively large size reduction and uncontrollable shape change of the special-shaped components in the carbonization treatment process, the special-shaped surface of the solid wood skirting line is required to be obtained through milling treatment, and therefore the carbonized solid wood skirting line is often obtained through milling treatment after the whole carbonized woolen material in the prior art. For example, the Chinese patent data discloses a patent number CN101224593B, which is written in the patent entitled "method for heat treatment of wood: stacking the timber in a heat treatment chamber; setting the temperature of the first stage at 80-150 ℃, the oxygen content at 12-21%, and maintaining the treatment time at 0.5-1.5 hours per 1cm thickness of wood; setting the temperature of the second stage at 150-200 ℃, the oxygen content at 6-12%, and maintaining the treatment time at 0.5-2 hours per 1cm thickness of wood; setting the temperature of the third stage at 180-260 ℃, the oxygen content at 2-6%, and maintaining the treatment time at 0.5-2 hours per 1cm thickness of wood; and the fourth stage is a cooling and balancing treatment stage, when the temperature in the treatment chamber is reduced to below 100 ℃, the wood is subjected to balancing treatment of the water content by using a steam spraying mode, and after the water content of the wood reaches the value required by a product, the temperature is reduced to 40-50 ℃. The method can be used for carrying out integral carbonization treatment on the wooden plate. The wooden board is then shaped according to the technical solution described in the patent publication CN210452227U entitled "a skirting line grinding device".

However, the technical scheme has the following technical problems: (1) The carbonization energy consumption increases with the increase of the volume of the processed wood, and the carbonization energy consumption is wasted for the carbonization treatment of the part of the materials which are milled in the milling treatment; (2) The solid wood skirting line allows a certain degree of dimensional change and shape change in actual use, so that the whole treatment actually causes waste of wood materials and processing energy consumption, and the processing time is prolonged.

Therefore, the prior art lacks a carbonized surface layer coated solid wood skirting line with a certain waterproof effect.

Disclosure of Invention

The application provides a carbonized surface layer coated solid wood skirting line, and a production method and production equipment suitable for preparing the same.

In a first aspect of the application, a skirting line coated with a carbonized surface layer is provided, and the skirting line comprises a line body, wherein one side surface of the line body is provided with a mounting back surface, a mounting structure is arranged on the mounting back surface, one side surface opposite to the mounting back surface is provided with a decorative surface, and the mounting back surface and the decorative surface are both shallow densified carbonized layers.

In some embodiments, the thickness of the superficial densified charred layer is 0.1-0.3 mm.

In a second aspect of the present application, there is provided a method for manufacturing a carbonized surface layer coated skirting line, comprising the steps of:

(A) Wetting the surface of the line body of the skirting line with a liquid substance;

(B) Firing the polished surface using an open flame after first polishing the wetted surface;

(C) The burned surface is passed through a heated roll having pressure after the second polishing.

In some embodiments, the first polishing in step (B) is achieved by a dupont wire roll, the polishing depth being 0.05 to 0.15mm; the second polishing in the step (C) is realized by a grinding wheel, and the polishing depth is 0.05-0.1 mm.

In some embodiments, the liquid substance is a resin solution with a resin content of 2-5%.

In some embodiments, the treatment of step (B) should be performed when the surface is wetted to a thickness of 0.2 to 0.3 mm.

In some embodiments, in step (B), the surface is passed through an open flame at a speed of 1.2 to 1.5m/s to burn the surface.

In some embodiments, in step (C), the heated roll is adapted to maintain the temperature of the surface and the surface is subjected to a pressure of 0.5 to 0.8mpa throughout the heated roll.

In some embodiments, the surface is continuously pressed for 20-60 seconds everywhere.

In some embodiments, steps (a) through (C) are repeated until the liquid substance no longer permeates when wetting the surface.

In a third aspect of the present application, there is provided an apparatus suitable for carrying out the aforementioned production method to obtain a carbonized surface layer coated skirting line, comprising a conveying mechanism capable of conveying in the x-axis direction, a wetting mechanism, a first polishing mechanism, a firing mechanism, a second polishing mechanism, a hot roller pressing mechanism being provided in this order in the x-axis direction.

In summary, compared with the prior art, the application has the following beneficial effects: the surface of the solid wood skirting line is coated with the superficial densification carbonization layer which can provide waterproof and mildew-proof effects and improve stability, and other parts maintain the natural shape and structure of wood, so that the product structure has lower raw material processing loss, higher yield and lower processing energy consumption in the production process; meanwhile, the superficial densified carbonized layer and other parts belong to different parts of the same wood, and the superficial densified carbonized layer and the other parts are naturally connected through fibers, so that the problem of falling of a waterproof and mildew-proof surface layer does not exist.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of a wood strand not carbonized in example 1 of the present application.

FIG. 2 is a schematic view showing the state of the surface after the first polishing in the step (B) of the embodiment 1 of the present application;

FIG. 3 is a schematic view showing the state of the surface after the second polishing in the step (C) of the embodiment 1 of the present application;

FIG. 4 is a schematic view showing the state of passing the rear surface of the heat roller in the step (C) of example 1 of the present application;

Fig. 5 is a schematic cross-sectional structure of a wood strand according to embodiment 1 of the present application.

Fig. 6 is a schematic structural view of the apparatus of embodiment 1 of the present application.

FIG. 7 is a schematic cross-sectional view of a wood strand not carbonized in example 3 of the present application.

In the figure: 100. line body, 101', mounting back, 102', decorative surface, 110, superficial densified char layer.

Detailed Description

In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, shall fall within the scope of the application.

Example 1: in this embodiment, the solid wood skirting line to be treated is a flat skirting line manufactured by the prior art and the existing equipment, the tree species is poplar, the shape structure is shown in fig. 1, and the carbonization treatment is performed by the following steps:

(A) Wetting the surface of the line body 100 of the skirting line with a liquid substance;

(C) After the second polishing of the burned surface, the surface is passed through a heated roller having pressure.

Wherein the surface refers to the mounting back 101', the decorative surface 102' of the wood strands.

The inventor finds that the use environment of the skirting line of the solid wood is different from that of the solid wood floor or the wood furniture through long-term practice, so that the quality requirements are different to a certain extent. Specifically, the skirting line, although exposed to the air environment, has its primary moisture-bearing surface being the installation back 101'; at the same time, the skirting line is independently installed, only the skirting line is lengthened in the length direction, the dimensional change rate of the solid wood material in the length direction is relatively small and can be ignored, and at the same time, the dimensional change to a certain extent in the width direction of the skirting line does not influence the firmness of installation and the whole attractive appearance, so that certain dimensional change is allowed to occur. Thus, the inventors believe that the solid wood skirting line can meet the requirement for improved stability by only carbonizing the mounting rear surface 101 'and the decorative surface 102'.

With the above method, the surface of the line body 100 is softened by wetting in the step (a), and then the wood fibers in the softened surface are separated from the surface to an upright or nearly upright state by the first polishing in the step (B), and the wood fibers separated from the surface are carbonized by firing with open flame as shown in fig. 2; the second polishing of step (C) causes a portion of the carbonized ash to leave the surface of the line body 100 with the dust removal system, and another portion of the carbonized ash is embedded in the surface after the second polishing to fill up voids, depressions, etc. that may exist, as shown with reference to fig. 3; finally, after the surface passes through the hot roller with pressure, the surface which is embedded and filled by carbonized ash is further ironed under the synergistic effect of the moisture in the shallow surface layer still with a certain moisture content and the pressure of the hot roller, and meanwhile, the shallow surface layer still with a certain moisture content is subjected to shallow compression under the synergistic effect of the waste heat and the pressure of the hot roller, and finally, the carbonized line body 100 shown in fig. 4 is obtained, and the surface of the carbonized line body is provided with a shallow densified carbonized layer 110. The surface carbonization effect formed by filling and ironing the carbonized ashes can enable the treated line body 100 to have certain waterproof and mildew-proof performances, and the surface compaction effect is generated by the synergistic effect of the water in the surface layer and the pressure of the hot roller, so that the surface structure is more compact, and the waterproof performance of the treated surface (comprising the mounting back surface 101 'and the decorative surface 102') of the skirting line can be further improved.

In summary, by the method of the embodiment, the following beneficial effects can be achieved:

The carbonization treatment is carried out on the skirting line after the modeling treatment, so that the waste of invalid treatment energy consumption of part of materials milled in the milling treatment is avoided;

the carbonization treatment is carried out on the surface (the superficial surface) of the skirting line, so that the waste of wood materials and added function consumption caused by integral carbonization is avoided, and the skirting line and the preparation method thereof in the embodiment form a superficial densified carbonization layer with certain waterproof performance on the surface of the solid wood skirting line in a mode of saving wood materials and processing energy consumption.

Specifically, the liquid substance in step (a) is deionized water. The thickness of the surface being wetted is controlled by controlling the amount of liquid substance applied to the surface during the wetting process and/or controlling the leveling time of the liquid substance on the surface after the wetting process and before step (B). Generally, the treatment of step (B) should be performed before the surface is wetted to a thickness of 0.2 to 0.3 mm. For example, the coating amount of 40-45 g/square meter and the leveling time of 10-15 s can meet the requirement of the step.

The first polishing in step (B) is accomplished by a dupont wire roll, using a dupont wire diameter of 0.1mm, with a polishing depth that should be less than the thickness of the wetted thickness layer to avoid complete removal of the wetted thickness layer. For example, the actual wetting thickness is 0.3mm, the polishing depth is preferably set to 0.1 to 0.15mm, or the actual wetting thickness is 0.2mm, and the polishing depth is preferably set to 0.05 to 0.1mm. Of course, the thickness of the wetted thickness layer is difficult to control to absolute and accurate data, and the wetted thickness layer is slightly different in breadth, so that the wetted thickness is only required to be 0.2-0.3 mm and the polishing depth is required to be 0.05-0.15 mm. After the first polishing is completed, the surface of the strand body 100 should be passed through an open flame rapidly, for example, an external flame passing through the open flame at a speed of 1.4m/s to burn the surface, so that the upright or nearly upright wood fibers formed on the polished surface are burned into wood ashes.

The second polishing in step (C) is achieved by a grinding wheel, for example, a ceramic grinding wheel of W40 in a parallel structure, and the polishing depth is 0.05 to 0.1mm for the same reason as described above. The second polishing can be better achieved by selecting a grinding wheel to perform the second polishing, even if part of the carbonized ash leaves the surface of the line body 100 with the dust removal system, and another part of the carbonized ash is embedded in the surface after the second polishing to fill up the possible voids, depressions, and the like. The heat roller is suitable for maintaining the surface at 150 to 160 ℃, and therefore, should have an outer edge temperature of 170 to 180 ℃ while being capable of applying a pressure of 0.6MPa to the surface everywhere. By providing a plurality of heat rollers, the continuous pressing time of the surface was 55s.

Repeating steps (a) through (C) until no penetration of the liquid substance occurs upon wetting the surface. One of the methods is to observe the contact angle of a liquid drop on a surface, and the other is to coat the liquid on the surface and observe whether or not the surface is deepened in color.

The skirting line coated with the carbonized surface layer shown in fig. 5 is prepared by the processing method, and comprises a line body 100, wherein one side of the line body 100 is provided with a mounting back surface 101, the mounting back surface 101 is provided with a mounting structure suitable for mounting the skirting line on a wall body, and the mounting structure can be any one of the prior art; the side opposite to the mounting back 101 is a decorative surface 102, and both the mounting back 101 and the decorative surface 102 are formed by a superficial densified charred layer 110. In particular, the thickness of the superficial densified charred layer 110 is 0.1-0.3 mm.

Referring to fig. 6, a manufacturing apparatus for skirting line coated with the carbonized surface layer includes a conveying mechanism 200 capable of conveying along an x-axis direction, and a wetting mechanism 300, a first polishing mechanism 400, a burning mechanism 500, a second polishing mechanism 600, and a hot roller pressing mechanism 700 are sequentially disposed along the x-axis direction.

Specifically, the conveyor mechanism 200 includes rollers or belt conveyors positioned before the wetting mechanism 300, rollers or belt conveyors adapted to engage respective segments of the wetting mechanism 300, the first polishing mechanism 400, the burning mechanism 500, the second polishing mechanism 600, the hot roller pressing mechanism 700, and rollers or belt conveyors positioned after the hot roller pressing mechanism 700. The wood strands are conveyed on the conveying mechanism 200 in a posture in which the installation back 101 faces downward and the decorative surface 102 faces upward.

The wetting mechanism 300 is a prior art roll coater, for example, comprising a roll coating frame, an upper pair of coating rolls and a lower pair of coating rolls mounted by a screw-on roll coating frame. Preferably, the wetting mechanism 300 is housed within a protective cover to mitigate moisture changes of the strand body 100 prior to entering the first polishing mechanism 400.

First polishing mechanism 400 is a prior art dupont wire roll machine, for example, comprising an upper dupont wire roll adapted to polish decorative surface 102 a first time, a belt transfer section located below the upper dupont wire roll, a lower dupont wire roll located behind the upper dupont wire roll and adapted to polish mounting back surface 101 a first time, and a pinch block located above the lower dupont wire roll.

The burning mechanism 500 is a singeing machine or burner of the prior art.

The second polishing mechanism 600 is a prior art grinder, for example, comprising an upper grinding wheel adapted to polish the decorative surface 102 a second time, a belt transfer section located below the upper grinding wheel, a lower grinding wheel located behind the upper grinding wheel and adapted to polish the mounting back 101 a second time, and a compression block located above the lower grinding wheel.

The hot roll pressure mechanism 700 is a prior art oil hot roll, for example comprising an upper oil hot roll and a lower oil hot roll, at least one of which is mounted by an oil cylinder so as to be able to provide pressure.

Example 2: example 2 differs from example 1 in that the liquid material in step (a) is a resin solution having a resin content of 3%, such as a commercially available acrylic resin solution. The requirements of the step can be met by combining the coating weight of 40-45 g/square meter and the leveling time of 15-20 s.

Example 3: example 3 differs from example 2 in that the skirting line to be treated is a shaped skirting line produced via a prior art, existing device, the shape and structure of which are shown with reference to fig. 7.

Since the skirting line treated in this embodiment has a special-shaped configuration, the structures of the wetting mechanism 300, the first polishing mechanism 400, the second polishing mechanism 600, and the hot roller pressing mechanism 700 in the apparatus are all different.

In particular, at least the upper coating roller of the upper and lower coating roller pairs of the wetting mechanism 300 should be a soft roller or a hard roller shaped to match the shape of the decorative surface 102. The shape of the upper dupont roll in first polishing mechanism 400 should match the shape of ornamental surface 102. The shape of the upper grinding wheel in the second polishing mechanism 600 should match the shape of the ornamental surface 102.

The hot roll pressure mechanism 700 includes an upper chill roll, which is a sponge roll, and a lower oil hot roll, which is installed through an oil cylinder to provide pressure.

The product properties of the skirting lines of examples 1 to 3 are shown with reference to table 1. Wherein, the control group 1 is an untreated plate skirting line, the control group 2 is an integrally carbonized plate skirting line in the prior art, and the tree species are poplar. The hygroscopicity is that the moisture content of a test piece is adjusted to 12% firstly, then the test piece is placed in an environment of 30 ℃/90% RH for 72 hours, the moisture content of the test piece is detected, the moisture content increase rate is used as the hygroscopicity, and the test piece is subjected to end sealing treatment in the detection process so as to reduce the influence of end water absorption on an experiment result.

TABLE 1 product Properties of the wooden strands of examples 1 to 3

Group of	Surface hardness (MPa) of mounting back	Surface hardness (MPa) of decorative surface	Hygroscopicity (%)	Dimensional stability in the width direction (%)
					Example 1	1810	1750	20.8	7.8
Example 2	2050	1890	16.7	7.2
					Example 3	2070	1420	16.7	7.0
Control group 1	1350	1350	50.0	12.5
					Control group 2	1230	1230	8.3	6.5

The foregoing description is for purposes of illustration and is not intended to be limiting. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but instead should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated herein by reference for the purpose of completeness. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to forego such subject matter, nor should the applicant be deemed to have such subject matter not considered to be part of the subject matter of the disclosed application.

Claims

1. The utility model provides a skirting line of carbomorphism top layer cladding, includes the line body, one side breadth of line body is the installation back, set up mounting structure on the installation back, with one side breadth that the installation back is relative is the decoration surface, its characterized in that, the installation back the decoration surface is shallow densification carbomorphism layer.

2. The carbonized surface layer coated skirting line according to claim 1, wherein the thickness of the superficial densified carbonized layer is 0.1-0.3 mm.

3. A method for making a carbonized skin-coated skirting line as defined in claim 1, comprising the steps of:

4. The carbonization treatment method of wood strands according to claim 3, wherein the first polishing in the step (B) is performed by a dupont roller, and the polishing depth is 0.05 to 0.15mm; the second polishing in the step (C) is realized by a grinding wheel, and the polishing depth is 0.05-0.1 mm.

5. The method for carbonizing wood strands according to claim 3, wherein the liquid substance is a resin solution having a resin content of 2 to 5%.

6. The method of carbonizing wood strands according to claim 5, wherein the step (B) is performed when the surface is wetted to a thickness of 0.2 to 0.3 mm.

7. A wood strand carbonization treatment according to claim 3, wherein in step (B), the surface is subjected to an open flame at a speed of 1.2 to 1.5m/s to burn the surface.

8. The method of carbonizing wood strands according to claim 3, wherein in the step (C), the heat roller is adapted to maintain the temperature of the surface, and the pressure is applied to each part of the surface at 0.5 to 0.8mpa while passing through the heat roller, and the duration of the pressure is 20 to 60s.

9. The method of charring wood strands according to claim 1, wherein steps (a) to (C) are repeated until the liquid substance no longer permeates when wetting the surface.

10. An apparatus suitable for preparing the carbonized surface layer coated skirting line as set forth in claim 1, characterized by comprising a conveying mechanism capable of conveying along the x-axis direction, and a wetting mechanism, a first polishing mechanism, a burning mechanism, a second polishing mechanism and a hot roller pressing mechanism sequentially arranged along the x-axis direction.