Support Block Made from Indonesian Rubber Tree with Laminated Veneer Structure and Manufacturing Method thereof

Abstract

A support beam made of Indonesian rubber wood with a laminated veneer structure according to the present invention is formed into a rectangular column shape by including a plurality of veneer layers laminated by filling Indonesian rubber wood from which latex has been removed to a thickness less than or equal to a predetermined standard thickness, and the plurality of veneer layers can be formed by compression by bonding with an adhesive resin.

Description

Technology Field

[0001] The present invention relates to a support beam and a method for manufacturing the same, and more specifically, to a support beam with improved strength and durability and a method for manufacturing the same by laminating a thinly peeled veneer of Indonesian rubber tree from which the latex has been removed. Background Technology

[0002] Steel materials undergo production, transportation, and storage processes at industrial sites. In particular, large steel products such as pipes, coils, and plates are heavy, so it is common practice to place support blocks underneath them during stacking and storage. Support blocks serve to prevent damage caused by direct contact between steel materials and the ground or other steel materials, and to maintain a stable stacked state by distributing the load.

[0003] Traditionally, wood has been widely used as a material for timber supports. Wooden supports have the advantages of being easy to process, inexpensive, and not damaging the surface of steel when in contact with it. However, supports made by simply cutting ordinary logs have uneven strength depending on the grain direction, and problems arise where they crack or break along the grain when exposed to continuous loads. Furthermore, wood in its natural state has limitations, such as significant quality variations due to defects like moisture content, knots, and cracks, and inconsistent durability.

[0004] Meanwhile, although rubber trees are widely cultivated as a latex-producing species, their use in wood products has been limited due to the latex content they contain. While latex is the primary component determining the economic value of rubber trees, it can actually cause problems during the drying and processing stages when processed into wood. Consequently, rubber trees have mostly been discarded or utilized only for low-value applications after latex extraction is complete. However, with the recent rise in interest in environmental protection and resource recycling, attempts are being made to convert discarded rubber trees into useful wood resources.

[0005] However, the technology for manufacturing support timbers by applying latex-removed rubberwood to the laminated wood manufacturing process has not yet been sufficiently developed, and research is needed on optimized manufacturing methods and structures that take into account the physical properties of rubberwood and the characteristics of the laminated structure.

[0006] Therefore, a method to resolve these problems is required. Prior art literature

[0007] Korean Patent Publication No. 10-2023-0030943 The problem to be solved

[0008] The present invention is an invention devised to solve the problems of the aforementioned prior art, and aims to provide a support timber and a method for manufacturing the same that minimizes defects in wood and improves strength and durability by forming a laminated structure of thinly peeled veneer made of Indonesian rubber wood from which the latex has been removed, and can efficiently utilize discarded rubber wood resources.

[0009] The problems of the present invention are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0010] A support member made of Indonesian rubber wood with a laminated veneer structure according to the present invention for achieving the above-mentioned purpose is formed into a rectangular column shape by including a plurality of veneer layers laminated by filling Indonesian rubber wood from which latex has been removed to a thickness less than or equal to a predetermined standard thickness, and the plurality of veneer layers can be formed by bonding and compression using an adhesive resin.

[0011] At this time, the plurality of veneer layers can be laminated such that the grain direction of each veneer layer is oriented in the same direction.

[0012] In addition, the plurality of veneer layers may be interlaced such that the grain directions of adjacent veneer layers are orthogonal to each other.

[0013] And among the plurality of veneer layers, at least some layer adjacent to the direction of the support surface that contacts the support object may have a pair of divided veneer layers spaced apart on the same layer, with the sum of their widths being smaller than that of the remaining veneer layers, so that a banding receiving groove extending along the longitudinal direction may be formed between the pair of divided veneer layers.

[0014] Meanwhile, the method for manufacturing a support timber using Indonesian rubber wood as a raw material for a laminated veneer structure according to the present invention for achieving the above-mentioned purpose may include the steps of: (a) preparing Indonesian rubber wood from which the latex has been removed; (b) producing a plurality of veneer layers by filling the rubber wood to a thickness less than or equal to a predetermined standard thickness; (c) applying an adhesive resin to the plurality of veneer layers; (d) laminating the plurality of veneer layers coated with the adhesive resin; and (e) compressing the plurality of veneer layers laminated by step (d) to form a support timber in the shape of a rectangular column.

[0015] At this time, between steps (b) and (c), a step (ex) of drying the plurality of veneer layers may be further included.

[0016] In addition, step (d) above can be performed by laminating the plurality of veneer layers such that each grain direction is oriented in the same direction.

[0017] And in step (d) above, the grain directions of adjacent veneer layers among the plurality of veneer layers can be interlaced so that they are orthogonal to each other.

[0018] At this time, step (d) can form a banding receiving groove extending along the longitudinal direction between the pair of divided veneer layers by spacing and stacking a pair of divided veneer layers, the sum of the widths of which is smaller than that of the remaining veneer layers, on at least some layers adjacent to the direction of the support surface that contacts the support object among the plurality of veneer layers.

[0019] In addition, after step (e) above, step (f) of polishing the surface of the support member may be further performed. Effects of the invention

[0020] The present invention, which uses Indonesian rubber wood with a laminated veneer structure as a raw material to solve the above-mentioned problem, and the method for manufacturing the same, has the advantage of being able to provide an environmentally friendly and economical support timber by utilizing Indonesian rubber wood from which the latex has been removed as a raw material, thereby recycling resources that were previously discarded.

[0021] In addition, the present invention has the advantage of improving the quality uniformity and durability of the support timber by forming a laminated structure by bonding a plurality of thinly peeled veneer layers of rubber wood with an adhesive resin, thereby minimizing defects such as knots and cracks in the wood and reducing variations in strength along the grain direction.

[0022] Therefore, the present invention has the advantage of being able to extend the replacement cycle of the support timber by having excellent resistance to continuous load and friction, and can provide a stable transportation and storage environment for steel materials.

[0023] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims. Brief explanation of the drawing

[0024] FIG. 1 is a drawing showing a support object being supported through a support member made of Indonesian rubber wood with a laminated veneer structure according to the first embodiment of the present invention. FIG. 2 is a drawing showing the appearance of a support beam made of Indonesian rubber wood with a laminated veneer structure according to the first embodiment of the present invention. FIG. 3 is a diagram showing each process of a method for manufacturing a support timber using Indonesian rubber wood from which the latex has been removed as a raw material, according to the first embodiment of the present invention. FIG. 4 is a drawing showing the appearance of a support beam made of Indonesian rubber wood from which the latex has been removed, according to the second embodiment of the present invention. Specific details for implementing the invention

[0025] In this specification, where a component (or region, layer, part, etc.) is described as being "on," "connected," or "combined" with another component, it means that it may be directly placed / connected / combined with the other component, or that a third component may be placed between them.

[0026] Identical reference numerals denote identical components. Additionally, in the drawings, the thicknesses, proportions, and dimensions of the components are exaggerated for the effective illustration of the technical content.

[0027] "And / or" includes all one or more combinations that the associated configurations can define.

[0028] Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0029] Additionally, terms such as "below," "lower side," "above," and "upper side" are used to describe the relationships between the components depicted in the drawings. These terms are relative concepts and are described based on the directions indicated in the drawings.

[0030] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Additionally, terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and are explicitly defined herein unless interpreted in an ideal or overly formal sense.

[0031] Terms such as "include" or "have" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0032] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0033] FIG. 1 is a drawing showing a support object (10) being supported through a support member (100) made of Indonesian rubber wood with a laminated veneer structure according to the first embodiment of the present invention.

[0034] As illustrated in FIG. 1, in the present invention, the support member (100) can perform the role of supporting a support object (10) made of steel material.

[0035] The support object (10) may be a steel material of various forms such as a steel pipe, steel coil, steel plate, etc., and a support block (100) may be placed at the bottom during transportation and storage to prevent direct contact with the ground or other steel materials.

[0036] The support member (100) can perform the role of distributing the load of the supported object (10), maintaining a stable loading state, and preventing surface damage to the supported object (10).

[0037] In addition, to prevent movement of the support object (10), a triangular member (20) that supports the support object (10) from both sides may be provided on the support member (100).

[0038] FIG. 2 is a drawing showing the appearance of a support member (100) made of Indonesian rubber wood with a laminated veneer structure according to the first embodiment of the present invention.

[0039] As illustrated in FIG. 2, the support member (100) in the present invention may be formed into a rectangular column shape by including a plurality of veneer layers (110) laminated by filling Indonesian rubber wood from which the latex has been removed to a thickness less than or equal to a predetermined standard thickness.

[0040] Rubber trees are widely cultivated as a species that produces latex, but their use in wood products has been limited due to the latex components contained within them. Therefore, most rubber trees from which latex has been harvested have been discarded or used only for low-value-added purposes, but in the present invention, the recycling of waste resources can be realized by utilizing rubber trees from which latex has been removed as raw materials for support timbers (100).

[0041] Multiple veneer layers (110) can be produced by filling rubber wood into a thin sheet form. The filling process can be performed by rotating the wood and thinly slicing it with a blade, thereby producing veneer layers (110) with a uniform thickness.

[0042] At this time, the previously set standard thickness can be set considering the quality and lamination efficiency of the veneer layer (110), and generally, it can be formed with a thickness of several millimeters or less. By forming the veneer layer (110) thinly, defects such as knots and cracks present in the wood can be prevented from affecting the entire veneer layer (110), and the influence of defects can be minimized during lamination.

[0043] A plurality of veneer layers (110) can be formed by compression bonding with an adhesive resin. The adhesive resin can be applied between the veneer layers (110) to provide bonding strength between the veneer layers (110), and various types of adhesive resins such as phenolic resin, urea resin, and melamine resin can be used.

[0044] A plurality of veneer layers (110) coated with adhesive resin can be laminated and then compressed to be integrally bonded, and the compression process can be performed using a cold pressing method or a hot pressing method. The cold pressing method is a method of curing the adhesive resin by applying pressure at room temperature, and the hot pressing method is a method of promoting the curing of the adhesive resin by applying heat and pressure simultaneously. The support wood (100) formed in this way has improved strength compared to the original wood due to the laminated structure, and the variation in physical properties according to the grain direction can be reduced.

[0045] Meanwhile, in the present invention, a plurality of veneer layers (110) may be laminated such that the grain direction of each veneer layer (110) is oriented in the same direction. The grain direction of the veneer layer (110) refers to the direction in which the wood fibers extend, and if all veneer layers (110) are laminated with the grain direction oriented in the same direction, the strength in a specific direction can be improved. Therefore, when the support member (100) mainly receives a load in a certain direction, the load-bearing performance can be improved by orienting the grain direction in that direction.

[0046] Alternatively, in the present invention, a plurality of veneer layers (110) may be cross-stacked such that the grain directions of adjacent veneer layers (110) are orthogonal to each other. When the grain directions of adjacent veneer layers (110) are cross-stacked so that they are orthogonal to each other, the support member (100) can have uniform strength in all directions. That is, the difference in strength between the length direction and the width direction is reduced, so that it can be stably supported regardless of which direction a load is applied, and resistance to twisting or bending can also be improved.

[0047] FIG. 3 is a diagram showing each process of a method for manufacturing a support timber using Indonesian rubber wood from which the latex has been removed as a raw material, according to the first embodiment of the present invention.

[0048] As illustrated in FIG. 3, the method for manufacturing a support beam in the present invention may include steps (a), (b), (ex), (c), (d), (e), and (f).

[0049] Step (a) is the step of preparing an Indonesian rubber tree from which the latex has been removed. In Step (a), rubber trees scheduled for disposal after the latex extraction from the rubber tree is completed can be secured. The rubber tree from which the latex has been removed can be processed into wood and, through a drying process, can be prepared in a state suitable for manufacturing a support timber (100).

[0050] (b) Step (b) is a step of producing multiple veneer layers (110) by peeling rubber wood to a thickness less than or equal to a predetermined standard thickness. In step (b), the prepared rubber wood can be fed into a rotary peeling device or a slicing device to produce veneer layers (110) in the form of thin plates.

[0051] The rotary peeling method is a method of continuously thinning the wood with a blade while rotating the wood, and the slicing method may be a method of thinly cutting the wood by moving the blade while the wood is fixed. The peeled veneer layer (110) may have a uniform thickness less than or equal to a preset standard thickness, thereby ensuring uniformity of quality of the support wood (100) after lamination.

[0052] Step (ex) is a step of drying multiple veneer layers (110). Step (ex) can be performed between Step (b) and Step (c) and may be a process of removing moisture contained in the peeled veneer layers (110).

[0053] The drying of the veneer layer (110) can be performed by natural drying or hot air drying, and can proceed until the moisture content of the veneer layer (110) is reduced to a level suitable for bonding the adhesive resin. By properly drying the veneer layer (110), the bonding strength of the adhesive resin is improved, and the dimensional stability of the support member (100) after lamination can be secured.

[0054] Step (c) is a step of applying an adhesive resin to a plurality of veneer layers (110). In step (c), the adhesive resin can be uniformly applied to the surface of the dried veneer layers (110). The adhesive resin can be applied by means such as a roller, spray, or curtain coating, and can be evenly distributed over the entire surface of the veneer layers (110). The amount of adhesive resin applied can be adjusted to ensure sufficient bonding strength between the veneer layers (110), and an appropriate amount can be applied, as excessive adhesive resin may cause increased costs and delayed curing time.

[0055] Step (d) is a step of laminating a plurality of veneer layers (110) coated with adhesive resin. In step (d), the veneer layers (110) coated with adhesive resin can be laminated by stacking them sequentially.

[0056] During the lamination process, the grain direction of each veneer layer (110) may be oriented in the same direction, or the grain directions of adjacent veneer layers (110) may be arranged in an intersecting manner so that they are orthogonal to each other. Laminating so that the grain directions are oriented in the same direction can improve strength in a specific direction, and intersecting so that the grain directions are orthogonal to each other can ensure uniform strength in all directions.

[0057] Step (e) is a step of forming a rectangular column-shaped support member (100) by compressing a plurality of veneer layers (110) stacked by step (d). In step (e), the stacked veneer layers (110) can be fed into a press device to apply pressure.

[0058] The compression process can be performed using a cold compression method or a hot compression method. The cold compression method is a method of curing the adhesive resin by applying only pressure at room temperature, while the hot compression method is a method of promoting the curing of the adhesive resin by applying heat and pressure simultaneously. The hot compression method can shorten the curing time compared to the cold compression method and can improve the degree of curing of the adhesive resin. Once compression is complete, a plurality of veneer layers (110) can be integrally joined to form a rectangular column-shaped support member (100).

[0059] Step (f) is a step of polishing the surface of the support member (100). Step (f) can be performed after step (e), and the surface of the support member (100) can be smoothed through surface treatment processes such as sanding and polishing.

[0060] Surface polishing can improve the appearance of the support member (100) and minimize surface damage when in contact with the support object (10). Additionally, surface polishing can eliminate surface irregularities that may occur during the compression process and improve dimensional accuracy.

[0061] Hereinafter, other embodiments of the present invention will be described.

[0062] FIG. 4 is a drawing showing the appearance of a support beam (100) made of Indonesian rubber wood from which latex has been removed, according to the second embodiment of the present invention.

[0063] As illustrated in FIG. 4, in the present invention, the support member (100) may additionally have a banding receiving groove (120) formed in addition to the configuration of the first embodiment. Among the plurality of veneer layers (110), at least some layers adjacent to the support surface direction that contacts the support object (10) may have a pair of divided veneer layers (111) spaced apart on the same layer, the sum of the widths of which is smaller than that of the remaining veneer layers (110). A banding receiving groove (120) extending along the length direction may be formed between the pair of divided veneer layers (111).

[0064] A divided veneer layer (111) can be formed by dividing a conventional veneer layer (110) in the width direction, and a pair of divided veneer layers (111) can be combined to form a single veneer layer (110). A pair of divided veneer layers (111) can be spaced apart from the central part of the support member (100), and the spacing between the pair of divided veneer layers (111) can determine the width of the banding receiving groove (120). The spacing can be set considering the thickness and width of the steel banding for packaging, and can be adjusted so that the steel banding can be stably inserted into the banding receiving groove (120). The banding receiving groove (120) can be formed by continuously extending along the length direction of the support member (100) and can provide a space into which the steel banding can be inserted.

[0065] A support member (100) having a banding receiving groove (120) formed therein can be used as a packaging support member. When packaging a support object (10), such as steel material, the support object (10) can be placed on the support member (100) and then secured with a steel banding, and the steel banding can be inserted into the banding receiving groove (120) to be stably secured. Therefore, the support member (100) including the banding receiving groove (120) can improve the fixing force of the support object (10) during packaging and transportation, and can prevent the steel banding from detaching from the support member (100).

[0066] Meanwhile, when manufacturing a support member (100) according to the second embodiment, step (d) may include a process of forming a bending receiving groove (120). In step (d), a pair of divided veneer layers (111), having a sum of widths smaller than that of the remaining veneer layers (110), may be spaced apart and laminated on the same layer in at least some layers adjacent to the direction of the support surface that contacts the support object (10) among the plurality of veneer layers (110).

[0067] A pair of divided veneer layers (111) can be produced by cutting a conventional veneer layer (110) in the width direction, and the cut pair of divided veneer layers (111) can be spaced apart at a predetermined distance from the central part of the support member (100). The spacing between the pair of divided veneer layers (111) can correspond to the width of the banding receiving groove (120) and can be adjusted considering the size of the packaging steel banding.

[0068] In this way, by stacking a pair of divided veneer layers (111) spaced apart, a banding receiving groove (120) extending along the longitudinal direction between the pair of divided veneer layers (111) can be formed.

[0069] For the above, a support beam made of Indonesian rubber wood with a laminated veneer structure and a method for manufacturing the same have been described in detail according to each embodiment of the present invention. Below, various structures and processes that can be additionally applied to the present invention will be described.

[0070] In the present invention, step (a) is a step of preparing an Indonesian rubber tree from which the latex has been removed, and in detail may include a process of securing a rubber tree from which the latex has been harvested and a process of removing the latex.

[0071] The process of securing rubber trees for which latex extraction has been completed may involve selecting and securing rubber trees that no longer produce latex after extraction is finished. Rubber trees are felled when their productivity declines following latex extraction for a certain period, and the felled trees may contain residual latex.

[0072] The latex removal process may involve removing residual latex from the secured rubber trees and can be performed using natural drying or heat treatment methods. Natural drying may involve drying the felled rubber trees in a natural state for a specified period to evaporate or solidify the internal moisture and latex components. The natural drying period may vary depending on the size of the rubber trees, climatic conditions, etc., and may continue until the internal moisture content of the rubber trees decreases to a level suitable for wood processing.

[0073] The heat treatment method may involve applying high-temperature steam or hot air to felled rubber trees to melt or expel the internal latex components. Compared to natural drying, the heat treatment method can remove the latex in a shorter time; by placing the rubber trees in a sealed chamber and supplying steam at a predetermined temperature, the latex can be liquefied and then expelled. After heat treatment, the rubber trees can be further dried to control the moisture content.

[0074] In addition, the latex removal process in the present invention may further include a mechanical compression method. The mechanical compression method may be a method of forcibly expelling the internal latex by applying physical pressure to a felled rubber tree. By feeding the rubber tree into a roller press or a hydraulic press and applying pressure in the longitudinal or diametrical direction, the latex inside the rubber tree can be expelled to the outside through the pores between the tissues. The mechanical compression method may be performed in parallel with a natural drying method or a heat treatment method; if mechanical compression is performed while the rubber tree is heated after heat treatment, the viscosity of the latex is lowered, which can improve the expulsion efficiency.

[0075] In addition, the latex removal process in the present invention may further include a chemical treatment method. The chemical treatment method may involve immersing the rubber tree in a treatment solution containing a latex coagulant or a latex decomposer, or applying the treatment solution to the surface of the rubber tree. The latex coagulant can fix the latex so that it does not flow within the wood tissue by solidifying the polymer structure of the latex, while the latex decomposer can minimize the impact during wood processing by breaking down the polymer structure of the latex and converting it into low-molecular-weight substances. After chemical treatment, the rubber tree is washed to remove residual treatment solution, and stability as wood can be ensured through a drying process.

[0076] Furthermore, the latex removal process in the present invention may additionally include a vacuum treatment method. The vacuum treatment method may involve placing the rubber tree inside a sealed vacuum chamber and reducing the pressure inside the chamber to a level lower than atmospheric pressure to evaporate or discharge the latex and moisture inside the rubber tree. Heating the inside of the chamber during the vacuum treatment process can promote the evaporation of latex and moisture, and since evaporation is possible even at low temperatures under a vacuum state, damage to the wood tissue of the rubber tree can be minimized. The vacuum treatment method can shorten the processing time compared to the natural drying method and can uniformly remove latex even from the inside of the rubber tree.

[0077] In this way, in step (a), the latex removal process can be performed by selecting at least one of natural drying, heat treatment, mechanical pressing, chemical treatment, and vacuum treatment methods, or by combining these, and the optimal method can be selected by considering the condition of the rubber tree, treatment time, cost, etc.

[0078] Next, in the present invention, a plurality of veneer layers (110) may be formed with different thicknesses depending on the position of each layer. Among the plurality of veneer layers (110), the veneer layer (110) adjacent to the support surface direction that contacts the support object (10) may be formed with a first thickness, and the veneer layer (110) positioned in the central part among the plurality of veneer layers (110) may be formed with a second thickness greater than the first thickness.

[0079] The first thickness can be formed to be smaller than the second thickness, and by forming the veneer layer (110) adjacent to the direction of the support surface thinly, the stress distribution effect can be improved when a load is applied to the support object (10). The thin veneer layer (110) has densely formed interlayer boundaries so that the load can be distributed over multiple layers and prevent stress from concentrating on a specific layer. In addition, the thin veneer layer (110) can minimize the impact of wood defects on the entire layer, thereby improving the durability of the support surface.

[0080] By forming the veneer layer (110) placed in the central part thickly to a second thickness, the structural strength of the entire support member (100) can be secured. The central veneer layer (110) can perform the role of supporting the main load of the support member (100), and by forming it thickly, resistance to bending or deformation can be improved. Therefore, stress distribution and overall strength can be secured simultaneously through a differential thickness structure in which a thin veneer layer (110) is placed in the direction of the support surface and a thick veneer layer (110) is placed in the central part.

[0081] Next, in the present invention, step (c) may apply different adhesive resins or apply different amounts of adhesive resin depending on the position of the plurality of veneer layers (110). Among the plurality of veneer layers (110), the first adhesive resin may be applied to the outer veneer layer exposed to the outside of the support wood (100), and the second adhesive resin may be applied to the inner veneer layer placed inside among the plurality of veneer layers (110).

[0082] The first adhesive resin may be an adhesive resin with excellent water resistance or weather resistance. Since the outer veneer layer may be exposed to external environments such as moisture and temperature changes during transportation and storage, applying the first adhesive resin with excellent water resistance and weather resistance can prevent a decrease in bonding strength due to the external environment. Phenolic resin, melamine resin, etc., may be used as the first adhesive resin, and since it has excellent resistance to moisture, it can maintain the bonded state even during long-term use.

[0083] The second adhesive resin may be an adhesive resin with excellent bonding strength. Since the inner veneer layer is not directly exposed to the external environment, bonding strength may be more important than water resistance, and urea resin, epoxy resin, etc. may be used as the second adhesive resin. The second adhesive resin can improve the overall structural strength of the support member (100) by providing high bonding strength after curing.

[0084] Meanwhile, in step (c), among the plurality of veneer layers (110), the veneer layer (110) adjacent to the support surface direction may be coated with a first coating amount of adhesive resin, and the veneer layer (110) placed in the center may be coated with a second coating amount greater than the first coating amount of adhesive resin. Since the veneer layer (110) adjacent to the support surface direction is formed thinly and the interlayer boundary is dense, sufficient bonding strength can be secured with a relatively small amount of adhesive resin, and excessive coating of adhesive resin may delay the curing time or increase costs. On the other hand, since the central veneer layer (110) is formed thickly and has a wide contact area, a strong bond can be secured by sufficiently coating the adhesive resin with the second coating amount.

[0085] In this way, by applying different types or amounts of adhesive resin according to the location of the veneer layer (110), the performance required for each location can be optimized and the overall quality and economic efficiency can be improved.

[0086] Next, a functional insert layer may be disposed between a plurality of veneer layers (110) in the present invention. The functional insert layer may be selectively disposed between at least some of the plurality of veneer layers (110) and may perform a role in improving specific performance required of the support member (100). The functional insert layer may include at least one of a flame retardant impregnated layer, a preservative impregnated layer, or a reinforcing fiber layer.

[0087] The flame retardant impregnated layer may be formed in the form of a sheet or film impregnated with a flame retardant component and may be placed between the veneer layers (110) adjacent to the support surface direction that contacts the support object (10) among the plurality of veneer layers (110). Since the support surface direction may come into contact with high-temperature support objects (10), such as steel materials, or be exposed to fire hazards, placing the flame retardant impregnated layer can delay the combustion speed and prevent fire spread in the event of a fire. The flame retardant impregnated layer may be in the form of paper, non-woven fabric, or film impregnated with a flame retardant component such as a phosphorus-based flame retardant, a halogen-based flame retardant, or aluminum hydroxide, and may be laminated together with an adhesive resin between the veneer layers (110) to be integrally bonded.

[0088] The preservative-impregnated layer may be formed in the form of a sheet or film impregnated with a preservative component and may be placed between the outer veneer layers exposed to the outside among the plurality of veneer layers (110). Since the outer veneer layers may be exposed to moisture, mold, pests, etc. during transportation and storage, the preservative-impregnated layer can be placed to prevent decay and biological deterioration of the wood. The preservative-impregnated layer may be in the form of paper, non-woven fabric, or film impregnated with a preservative component such as a copper-based preservative, a boron-based preservative, or an insecticide, and may improve the durability of the veneer layer (110).

[0089] The reinforcing fiber layer can be formed in the form of a sheet or fabric made of high-strength fibers such as glass fibers, carbon fibers, or aramid fibers, and can be placed between the veneer layers (110) that are positioned in the central part among the plurality of veneer layers (110). Since the central part performs the main load-bearing role of the support member (100), the tensile strength, compressive strength, and bending strength of the support member (100) can be improved by placing the reinforcing fiber layer. The reinforcing fiber layer may be in the form of a unidirectional sheet in which the fibers are oriented in a certain direction, or in the form of a fabric in which the fibers are cross-arranged, and can be laminated together with an adhesive resin between the veneer layers (110) to form a composite structure.

[0090] Additionally, in the present invention, step (d) may include a process of selectively placing a functional insert layer during the process of laminating a plurality of veneer layers (110). In step (d), while laminating the veneer layers (110) sequentially, a flame retardant impregnated layer, a preservative impregnated layer, or a reinforcing fiber layer may be inserted at a specific location. The functional insert layer may be cut to the same size as the veneer layer (110) and placed, and may be bonded together with the veneer layer (110) by the adhesive resin by being inserted between the veneer layers (110) coated with the adhesive resin.

[0091] In this way, by selectively placing a functional insert layer between multiple veneer layers (110), the flame retardancy, durability, and strength of the support wood (100) can be selectively improved, and the type and placement location of the functional insert layer can be adjusted according to the usage environment and required performance.

[0092] Preferred embodiments according to the present invention have been described above, and it is obvious to those skilled in the art that, in addition to the embodiments described above, the present invention may be embodied in other specific forms without departing from the spirit or scope thereof. Therefore, the embodiments described above should be regarded as illustrative rather than restrictive, and accordingly, the present invention is not limited to the description above but may be modified within the scope of the appended claims and their equivalents. Explanation of the symbols

[0093] 10: Support object 20: Triangular neck 100: Support block 110: Veneer layer 111: Divided veneer layer 120: Banding receiving groove

Claims

Claim 1 A support member formed into a rectangular column shape including a plurality of veneer layers laminated by filling Indonesian rubber wood from which the latex has been removed to a thickness less than or equal to a predetermined standard thickness, wherein the plurality of veneer layers are bonded and compressed by an adhesive resin, wherein one or more veneer layers adjacent to the direction of the support surface that contacts the support object among the plurality of veneer layers are formed with a first thickness, and a veneer layer disposed in the inner central part of the plurality of veneer layers formed with the first thickness is formed with a second thickness greater than the first thickness, wherein a first adhesive resin is applied to the outer veneer layer exposed to the outside of the support member among the plurality of veneer layers, and a second adhesive resin is applied to the inner veneer layer disposed inside among the plurality of veneer layers. Claim 2 In claim 1, the plurality of veneer layers are laminated such that the grain direction of each veneer layer is oriented in the same direction, forming a support member. Claim 3 In claim 1, the plurality of veneer layers are interlaced such that the grain directions of adjacent veneer layers are orthogonal to each other, forming a support beam. Claim 4 A support member according to claim 1, wherein at least some of the plurality of veneer layers adjacent to the direction of the support surface that contacts the support object have a pair of divided veneer layers spaced apart on the same layer, with the sum of their widths being smaller than that of the remaining veneer layers, and a banding receiving groove extending along the longitudinal direction is formed between the pair of veneer layers. Claim 5 (a) preparing Indonesian rubber trees from which the latex has been removed; (b) producing multiple veneer layers by peeling the rubber trees to a thickness less than or equal to a predetermined standard thickness; (c) applying an adhesive resin to the multiple veneer layers; (d) laminating the multiple veneer layers coated with the adhesive resin. A method for manufacturing a support member, comprising: (e) a step of compressing a plurality of veneer layers stacked by step (d) to form a support member in the shape of a rectangular column; wherein step (b) comprises manufacturing one or more veneer layers adjacent to the direction of the support surface that contacts the support object among the plurality of veneer layers to a first thickness, and manufacturing a veneer layer disposed in the central part inside the plurality of veneer layers manufactured to the first thickness to a second thickness greater than the first thickness; and step (c) comprises applying a first adhesive resin to an outer veneer layer exposed to the outside of the support member among the plurality of veneer layers, and applying a second adhesive resin to an inner veneer layer disposed inside among the plurality of veneer layers. Claim 6 A method for manufacturing a support beam according to claim 5, further comprising a step (ex) of drying the plurality of veneer layers between steps (b) and (c). Claim 7 In claim 5, the above step (d) is a method for manufacturing a support beam, wherein each of the plurality of veneer layers is laminated so that their grain directions are oriented in the same direction. Claim 8 In claim 5, the above step (d) is a method for manufacturing a support beam, wherein the grain directions of adjacent veneer layers among the plurality of veneer layers are intersected and laminated so as to be orthogonal to each other. Claim 9 A method for manufacturing a support member according to claim 5, wherein step (d) is formed by spacing and stacking a pair of divided veneer layers, the sum of which is smaller than the width of the remaining veneer layers, on the same layer in at least some layers adjacent to the direction of the support surface that contacts the support object among the plurality of veneer layers, thereby forming a banding receiving groove extending along the longitudinal direction between the pair of divided veneer layers. Claim 10 A method for manufacturing a support member according to claim 5, wherein, after step (e), step (f) of polishing the surface of the support member is further performed.

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