Wooden spring, method for making wooden spring and spiral dryer, wooden spring fabric, and use of wooden spring

Abstract

A wooden spring comprising a wood strip of intermediate thickness a, intermediate width b, and stretched length l is produced using a method for producing a wooden spring in which the coils of the wood strip have a helical shape with an average coil diameter d and an average coil pitch s, where a is 0.2 mm to 2 mm, b is 1 mm to 10 mm, l is 10 mm to 5000 mm, d is 6 mm to 60 mm, and s is 4 mm to 40 mm. A wooden fabric made of interwoven wood springs comprises a helical-shaped wood strip, and the wooden springs are woven together with at least two side-by-side wooden springs to form the wooden spring fabric.

Description

[Technical Field]

[0001] FIELD OF THE DISCLOSURE The present disclosure relates generally to the field of packaging materials, and more particularly to packaging materials and insulation made from wood strips, and methods of making strips of wood packaging material. [Background technology]

[0002] Wood wool, consisting of long, thin wood chips randomly stacked on top of one another, is widely known worldwide as a packing filler. Patent application U.S. Pat. No. 5,629,999 describes the use of spirally twisted wood chips having a thickness of 50-500 μm, preferably 50 μm to 150 μm, a stretched length of 1 cm to 5 cm, and a width of preferably 1 mm to 10 mm. The twisted wood chips derive their spirally twisted shape from the wood chips during cutting. The pitch of such wood chips varies along the chip and is not equal in different parts of the chip, and the cross-sectional diameter is different in different parts of the chip. Therefore, such wood chips are not suitable for producing materials such as fabrics.

[0003] Wood wool has historically been used primarily as a packing filler to protect fragile items, but because it provided uneven and limited protection, produced a lot of waste in the form of shattered wood wool particles during handling, and required gloves during handling because the edges of the wood wool could break when torn, wood wool is used relatively little these days and is primarily used for its decorative properties.

[0004] In addition, wood is cut into thin chips to make the wood wool easier to handle, which requires a lot of wood wool by weight. Cutting wood results in the loss of strength of the wood. For the reasons cited above, packaging pellets, blister films, or improved versions thereof are currently mainly used as packaging fillers. However, due to the global trend to reduce the use of plastics and move towards the use of biodegradable materials, there is a need for easy-to-handle, low-cost biodegradable packaging fillers.

[0005] Wood wool, packaging pellets, and bubble wrap have a significant additional drawback: they take up a lot of physical space, which makes their transportation and storage expensive. Currently, bubble wrap or modifications thereof are primarily used to enclose and pack items to be packaged, but with the global trend toward reducing the use of plastic and moving toward the use of biodegradable packaging materials, new, low-cost, and biodegradable bubble wrap is needed. Bubble wrap has a significant additional drawback: they take up a lot of physical space, which makes their transportation and storage expensive. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2009-240449 Summary of the Invention [Problem to be solved by the invention]

[0007] The present disclosure aims to provide a packaging material and a method for making the same that overcomes the problems encountered in the prior art. The present disclosure aims to provide a wood-based biodegradable packing filler that maximizes the strength of wood while also taking up little space during transportation and storage, is easy to use, and yet inexpensive. To achieve the objectives of the present disclosure, there are provided packing fillers and methods for making packing fillers from wood springs with new shapes and features that facilitate processing. The present disclosure aims to provide a new biodegradable fabric material that has physical protective properties similar to those of cellular plastic, is as easy to use as cellular plastic film, has production costs that are the same as or lower than bubble film, takes up less space when rolled up, and therefore has lower transportation and storage costs than bubble film. To achieve the objectives of the present disclosure, the inventors have provided a new fabric material comprising wood springs with a helical coil and cross-sectional shape, where the wood springs are woven together, and the wood springs are woven together in at least two side-by-side wood springs to form a wood spring fabric. [Means for solving the problem]

[0008] In one aspect, an embodiment of the present disclosure provides a wooden spring formed from a wood strip, the wooden spring comprising: a spiral having a first end and a second end, the first end having a diameter d2 and the second end having a diameter d3; and a plurality of coils between the first end and the second end of the spiral, wherein the average thickness a of the spiral is 0.2 millimeters to 2.0 millimeters (mm), the average width b, b2 of the spiral is 1 mm to 10 mm, the average diameter d of the coils is 6 mm to 60 mm, the average pitch s of the coils is 4 mm to 40 mm, and the stretched length l of the wooden spring is 10 mm to 5000 mm.

[0009] In another aspect, an embodiment of the present disclosure provides a spiral dryer for making wooden springs, comprising: a tubular spring forming means having a first end and a second end; a heat source configured to heat the tubular spring forming means; and a drive mechanism configured to draw a wood strip along the tubular spring forming means and wind the wood strip into a wooden spring.

[0010] In a third aspect, an embodiment of the present disclosure provides a method of making a wood spring, comprising: cutting a wood strip from a piece of wood; placing a first end of the wood strip into a spiral dryer preheated to between 60°C and 300°C; and at least partially drying the wood strip by drawing the wood strip at least partially along a tubular spring-forming means of the spiral dryer.

[0011] In a fourth aspect, an embodiment of the present disclosure provides a wooden spring fabric comprising a wooden spring according to an embodiment of the present disclosure, wherein two or more side-by-side wooden springs are interwoven with each other through the coils of the wooden springs.

[0012] In a fifth aspect, embodiments of the present disclosure provide uses of wooden springs according to embodiments of the present disclosure for packing material, for packing filler, for packaging, for making curtains, for making mattresses, for making interior or design elements.

[0013]

[0010] Embodiments of the present disclosure overcome the aforementioned problems in the prior art and make it possible to provide biodegradable materials for packing materials, packing fillers, packaging, making curtains, making mattresses, making interior or design elements. Further aspects, advantages, features, and objects of the present disclosure will become apparent from the following drawings and detailed description of exemplary embodiments taken in conjunction with the appended claims. [Brief explanation of the drawings]

[0014] For purposes of illustrating the present disclosure, reference is made to the following figures, in which preferred structures of the present disclosure are shown in the drawings:

[0015] [Figure 1] FIG. 1 shows a first embodiment of a wooden spring in a top view as well as an end view. [Figure 2] FIG. 2 shows an isometric view of a first embodiment of a wooden spring. [Figure 3] FIG. 3 shows an end view as well as an enlarged partial plan view of the wooden spring according to the first embodiment. [Figure 4] FIG. 4 shows a side view of an embodiment of a wooden spring with different coil directions. [Figure 5] FIG. 5 shows a side view of an embodiment of a wood spring having narrow pitch coils. [Figure 6] FIG. 6 shows an enlarged partial side view of an embodiment of a wood spring having narrow pitch coils. [Figure 7] FIG. 7 shows a side view of an embodiment of a wooden spring with different variable pitch lengths. [Figure 8] FIG. 8 shows an isometric view of a first type of embodiment of the first end and the second end of the wooden spring. [Figure 9] FIG. 9 shows an isometric view of the second and third types of embodiments of the first and second ends of the wooden spring. [Figure 10] FIG. 10 shows a side view of an embodiment of separating wooden springs, along with an end view. [Figure 11] FIG. 11 shows an enlarged partial end view of an embodiment for separating wooden springs. [Figure 12] FIG. 12 shows an isometric view of an embodiment for isolating the wooden spring. [Figure 13] FIG. 13 shows an isometric view of an embodiment for joining wooden springs. [Figure 14] FIG. 14 shows an isometric view of another embodiment in which two wooden springs are joined together. [Figure 15]FIG. 15 shows a top view of an embodiment of a wood fabric woven with wood springs having a circular cross-sectional shape. [Figure 16] FIG. 16 shows an end view of an embodiment of a wood fabric woven with wood springs having a circular cross-sectional shape. [Figure 17] FIG. 17 shows a side view of an embodiment of a wood fabric woven with wood springs having a circular cross-sectional shape. [Figure 18] FIG. 18 shows a top view of an embodiment of a wood fabric woven with wood springs having an oval cross-sectional shape. [Figure 19] FIG. 19 shows an end view of an embodiment of a wood fabric woven with wood springs having an oval cross-sectional shape. [Figure 20] FIG. 20 shows a side view of an embodiment of a wood fabric woven with wood springs having an oval cross-sectional shape. [Figure 21] FIG. 21 shows a top view of an embodiment of a wood fabric woven with wood springs having a chain link shaped cross section. [Figure 22] FIG. 22 shows an end view of an embodiment of a wood fabric woven with wood springs having a chain link shaped cross section. [Figure 23] FIG. 23 shows a side view of an embodiment of a wood fabric woven with wood springs having a chain link shaped cross section. [Figure 24] FIG. 24 is a top view of an embodiment of a wood fabric woven with angled wood springs having a circular cross-sectional shape. [Figure 25] FIG. 25 shows a top view of an embodiment of a wood fabric made of longitudinally woven wood springs having circular cross-sectional shapes. [Figure 26] FIG. 26 shows an end view of an embodiment of a wood fabric made of longitudinally woven wood springs having circular cross-sectional shapes. [Figure 27] FIG. 27 shows a side view of an embodiment of a wood fabric made of longitudinally woven wood springs having a circular cross-sectional shape. [Figure 28]FIG. 28 shows a top view of an embodiment of a wood fabric in which wood springs having circular cross-sectional shapes are woven in the normal direction. [Figure 29] FIG. 29 shows an end view of an embodiment of a wood fabric with normal interwoven wood springs having circular cross-sectional shapes. [Figure 30] FIG. 30 shows an isometric view of an embodiment of a wood fabric with normal interwoven wood springs having a circular cross-sectional shape. [Figure 31] FIG. 31 shows a top view of a single wooden spring having a circular cross-sectional shape along with an end view. [Figure 32] FIG. 32 shows an isometric view of a single wooden spring having a circular cross-sectional shape. [Figure 33] FIG. 33 shows an enlarged top view of a single wooden spring having a circular cross-sectional shape, along with an end view. [Figure 34] FIG. 34 shows a top view of an embodiment in which the wood fabric is formed from a number of joined wood springs. [Figure 35] FIG. 35 illustrates a spiral dryer for making wooden springs according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0016] The following detailed description illustrates embodiments of the present disclosure and how the embodiments may be implemented. In one aspect, the present disclosure provides a wooden spring formed from a wood strip, the wooden spring comprising: a spiral having a first end and a second end, the first end having a diameter d2 and the second end having a diameter d3; and a plurality of coils between the first end and the second end of the spiral, wherein the average thickness a of the spiral is 0.2 mm to 2.0 mm, the average widths b and b2 of the spiral are 1 mm to 10 mm, the average diameter d of the coils is 6 mm to 60 mm, the average pitch s of the coils is 4 mm to 40 mm, and the stretched length l of the wooden spring is 10 mm to 5000 mm.

[0017] The dimensions of the wooden spring may vary widely depending on the intended use of the fabric and strength needs. The average diameter d of the coils of the wooden spring is preferably in the range of 8 mm to 16 mm. The average pitch s of the coils of the wooden spring is preferably in the range of 7 mm to 14 mm. According to an embodiment of the present disclosure, the dimensions of the wooden spring may be as follows: Therefore, the average thickness a of the spiral is 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.9 mm, 0.95 mm, 1.0 mm, 1.05 mm, 1.1 mm, 1.15 mm, 1.2 mm, 1.25 mm, 1.3 mm, 1.35 mm, 1.4 mm, 1.45 mm, 1.5 mm, 1.6 mm, 1.65 mm, 1.7 mm, 1.75 mm, 1.8 mm, 1.85 mm, 1.9 mm, or 1.9 It can be from 5mm to 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1.0mm, 1.05mm, 1.1mm, 1.15mm, 1.2mm, 1.25mm, 1.3mm, 1.35mm, 1.4mm, 1.45mm, 1.5mm, 1.6mm, 1.65mm, 1.7mm, 1.75mm, 1.8mm, 1.85mm, 1.9mm, 1.95mm, or 2.0mm. Thus, the average width b, b2 of the spiral may be from 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, or 9.5 mm to 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, or 10 mm.Thus, the average diameter d of the coil may be from 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm, 34mm, 36mm, 38mm, 40mm, 42mm, 46mm, 48mm, 50mm, 52mm, 54mm, 56mm, or 58mm to 9mm, 12mm, 15mm, 18mm, 21mm, 24mm, 27mm, 30mm, 33mm, 36mm, 39mm, 42mm, 45mm, 48mm, 51mm, 54mm, 57mm, or 60mm. Thus, the average pitch s of the coils may be from 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm, 34mm, 36mm, or 38mm to 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm, 34mm, 36mm, 38mm, or 40mm. Therefore, the stretched length l of the wooden spring can be 10mm, 100mm, 200mm, 300mm, 400mm, 500mm, 600mm, 700mm, 800mm, 900mm, 1000mm, 1200mm, 1400mm, 1600mm, 1800mm, 2000mm, 2200mm, 2400mm, 2600mm, 2800mm, 3000mm, 3200mm, 3400mm, 3600mm, 3800mm, 4000mm, 4200mm, It can be from 4400mm, 4600mm, or 4800mm, up to 50mm, 150mm, 250mm, 350mm, 450mm, 550mm, 650mm, 750mm, 850mm, 950mm, 1250mm, 1500mm, 1750mm, 2000mm, 2250mm, 2500mm, 2750mm, 3000mm, 3250mm, 3500mm, 3750mm, 4000mm, 4250mm, 4500mm, 4750mm, or 5000mm.

[0018] The length of the wood strip processed into the wooden spring can be from a few millimeters up to 5-6 meters, depending on the wood from which the strip is cut and the intended use of the wooden spring. For example, to obtain a wooden spring with a free length of about 40 cm, a 1.3 meter wood strip can be used when a tubular spring former with a diameter of about 8 mm is used.

[0019] In an embodiment of the wooden spring, the wooden spring includes at least one of the following: the distance of the first end or the second end from the first coil is less than the average pitch; the first end is at least partially bent outside the wooden spring; the second end is at least partially bent outside the wooden spring; the first end is at least partially bent inside the wooden spring; and the second end is at least partially bent inside the wooden spring. Such various positions of the first and second ends of the wooden spring allow for better use of the wooden spring in packaging and packing. That is, the ends of the wooden spring are bent adjacent to the coil to make the ends more secure, to avoid them getting caught on each other, and to improve the appearance of the wooden spring. That is, the distance from the end of the wooden spring to the coil of the wooden spring adjacent to that end is less than the average length of the pitch of the wooden spring.

[0020] According to alternative solutions for the ends of the wooden spring, the lower end of the wooden spring is partially bent outside the wooden spring, or the upper end of the wooden spring is bent over the inside of the previous wooden spring. Such various positions of the first and second ends of the wooden spring can be achieved by, after obtaining the wooden spring from the spiral dryer, gripping the corresponding ends of the wooden spring between pliers and bending them to the desired position, while simultaneously compressing and heating the bent ends of the wooden spring to deform the wood and maintain the corresponding shape of the ends of the wooden spring. Thus, in a fourth aspect, the wooden springs made by using the spiral dryer and method of the present disclosure in embodiments can be used for packaging, packing filler, packaging, making curtains, making mattresses, and making interior or design elements.

[0021] According to an embodiment, the filler of the wooden spring package comprises a wooden spring formed of a spiral-shaped wood strip having an average thickness a, an average width b, and a stretched length l, and instead of making wooden chips by cutting, the wooden spring is produced by cutting pieces, but using a method of making wooden springs similar to a screw line with a mean diameter d of the coil and an average pitch s, where a is 0.2mm to 2mm, b is 1mm to 10mm, l is 10mm to 5000mm, d is 6 to 60, and s is 4mm to 40mm.

[0022] To save storage and transportation space, wooden springs are packed by compressing the ends of the wooden springs in the longitudinal direction.To facilitate transportation and storage of wooden springs, wooden springs are compressed at the ends and packed in a package shorter than the free length of the wooden springs, which saves 1.5 to 3 times the space.

[0023] In another aspect, an embodiment of the present disclosure provides a spiral dryer for making wood springs, the spiral dryer comprising: a tubular spring forming means having a first end and a second end; a heat source configured to heat the tubular spring forming means to between 60°C and 300°C; and a drive mechanism configured to draw a wood strip along the tubular spring forming means and wind the wood strip into a spiral. In this disclosure, the term "spiral dryer" refers to a device configured to impart a spiral shape to the wood strip and maintain and dry the spiral of the wood strip during drying of the wood strip.

[0024] The tubular spring forming means may be in the form of a pipe, shaft, or hollow shaft arranged to impart a helical shape to the wood strip when heated by a heat source to produce the wooden spring. To stabilize the wooden spring production process, the tubular spring forming means may be preheated by a heat source to a temperature between 60°C and 300°C. The temperature of the helical dryer is at least 60°C, e.g., 90°C to 250°C, 80°C to 300°C, and preferably 110°C to 200°C. Drying at a temperature between 100°C and 150°C provides the best results. Using this drying temperature range eliminates the risk of darkening the wood surface. If a drying temperature higher than 200°C is used, the wood surface may become significantly darker with some types of wood. Therefore, a drying temperature between 150°C and 180°C is preferred to accelerate the drying process while simultaneously preventing darkening of the wood surface. Therefore, the spiral dryer temperature may be 60°C, 65°C, 70°C, 75°C, 80°C, 85°C, 90°C, 95°C, 100°C, 105°C, 110°C, 115°C, 120°C, 125°C, 130°C, 135°C, 140°C, 145°C, 150°C, 155°C, 160°C, 165°C, 170°C, 175°C, 180°C, 185°C, 190°C, 195°C, 200°C, 205°C, 210°C, 215°C, 220°C, 225°C, 230°C, 235°C, 240°C, 245°C, 250°C, 255°C, 260°C, 265°C, 270°C, 275°C, 280°C, 285°C, 290°C, or 300°C. The temperature may be from 95°C to 65°C, 70°C, 75°C, 80°C, 85°C, 90°C, 95°C, 100°C, 105°C, 110°C, 115°C, 120°C, 125°C, 130°C, 135°C, 140°C, 145°C, 150°C, 155°C, 160°C, 165°C, 170°C, 175°C, 180°C, 185°C, 190°C, 195°C, 200°C, 205°C, 210°C, 215°C, 220°C, 225°C, 230°C, 235°C, 240°C, 245°C, 250°C, 255°C, 260°C, 265°C, 270°C, 275°C, 280°C, 285°C, 290°C, 295°C, or 300°C. Drying of the wood strips to be formed into the wooden springs is carried out during the formation of the shape of the wood strips, alternatively or additionally drying can be carried out after obtaining the shape of the wooden springs.

[0025] Alternatively or optionally, other drying methods can be used to achieve further benefits. Such drying methods can be, for example: The use of microwave drying allows for drying the interior of the wood strip, which further increases the speed of the drying process without burning the wood strip; The use of vacuum drying allows for lowering the boiling point of moisture in the wood, resulting in more intense drying; The use of conduction drying is more effective for drying veneers. One type of conduction drying is high-frequency drying, in which the material is placed between electric plates, where high-frequency vibrations are generated. As a result, heat begins to build up inside the material. Another type of conduction drying is radiant drying, in which heat is transferred to the material by radiation. During drying in a spiral dryer, the moisture content is dried to 0.001% to 7%, preferably 0.5% to 5%. In an alternative embodiment, the spiral dryer further comprises a wood strip feeder. When the wood strip is conveyed to the wood strip feeder, the wood strip feeder is configured to press the end of the wood strip between the belt and the bottom of the spiral groove, and the belt begins to pull the wood strip along the spiral groove by frictional force.

[0026] In an embodiment, the tubular spring forming means comprises a helical groove formed on an outer surface of the tubular spring forming means, the helical groove having a rectangular cross section, the helical groove may be formed by turning or milling.

[0027] In an embodiment, the heat source is configured to heat the tubular spring forming means from at least the inside of the tubular spring forming means or from the outside of the tubular spring forming means. The heat source for heating the tubular spring forming means may be a heated electrode inside the tubular spring forming means or a boiler device that circulates heat from combustion of wood residues inside the tubular spring forming means as a hot gas, steam or liquid. Alternatively or additionally, the heat source may be a flow of hot gas or steam that is sent to the tubular spring forming means.

[0028] In an embodiment, the drive mechanism comprises one or more transmission means attached around the tubular spring forming means and a drive configured to move the one or more transmission means along the spring forming means. Optionally, the drive mechanism of the spiral dryer may further comprise a tensioning mechanism configured to tension the transmission means (e.g., a belt tensioning mechanism for tensioning a belt transmission) and a guide (e.g., a belt guide) for guiding the transmission means.

[0029] In an embodiment, the one or more transmission means may be a belt, such as a flat belt, a toothed belt, or a V-belt. The belt may be wrapped around the bottom of the spiral groove of the tubular spring forming means. To reduce wear and friction of the belt with the bottom and sides of the spiral groove of the tubular spring forming means, cams having a harder material than the belt may be attached to the sides of the belt and the spiral groove. To increase the drying speed of the spiral dryer, the spiral dryer may be equipped with multiple transmission means, such as continuous belts, and the wood strips are pulled forward by the multiple continuous belts during drying. The bottom and sides of the spiral groove of the tubular spring forming means may be polished to reduce friction between the belt and the bottom and sides of the spiral groove. To enable drying of the wood strips at a temperature higher than the melting temperature of the belt material, chains may be used as one or more transmission means instead of belts.

[0030] In an embodiment, the spiral dryer further comprises a polishing mechanism that allows polishing the surface of the wood strip or polishing the surface of the wooden spring according to the method of the present disclosure. Additionally, the polishing mechanism may comprise a polishing groove whose shape is configured to the shape of the cross section of the wood strip.

[0031] In one embodiment, the drive mechanism is configured to drive the belt along the spiral groove. The tubular spring forming means of the spiral dryer is preheated using a heat source to 130°C to 180°C, preferably 150°C to 170°C. When the temperature of the tubular spring forming means reaches at least 60°C, a first end of the wood strip is placed in the spiral groove between the belt and the bottom of the spiral groove, and the belt begins to pull the wood strip along the spiral groove. Simultaneously, the preheated tubular spring forming means heats and dries the wood strip. As a result of the heating and drying, the wood strip is obtained in the shape of a cylindrical spiral, and the wood strip in the shape of a wooden spring exits the end of the tubular spring forming means of the spiral dryer. Another way to prevent adjacent wooden springs from interpenetrating each other is to fabricate the wooden springs so that the average coil width (b2) of the wooden spring is greater than the average distance (c2) between adjacent coils of the wooden spring. A third method for preventing side-by-side wooden springs from penetrating each other is to construct the wooden springs so that their pitch length varies along the length of the wooden spring.

[0032] To allow several wooden springs to be connected together in series, the average diameter d2 of at least one end portion of the wooden spring is absolutely smaller than the average diameter d1 of the wooden spring, and the end portion of the wooden spring with the smaller average diameter d2 is partially pressed into the end portion of the wooden spring with the average diameter d1. In this way, 2 to 1,000 wooden springs can be connected in series. In the case of longer composite wooden springs, for example, wound into a roll, the user can easily separate sections of the wooden spring by pulling. In some embodiments of the wooden springs, the average diameter d2 may also be smaller than the average diameter d3. This allows wooden springs to be connected together more efficiently by inserting one end of one wooden spring with a smaller diameter into the second end of a second wooden spring with a larger diameter. At the same time, the joined wooden springs can also be separated from each other by pulling.

[0033] In embodiments, the wooden spring includes one or more break marks. The break marks can be score cut in the side of the wooden spring, a visual mark, or both a score and a visual mark. The score can be V-shaped. The visual mark can be colored or burnt. To make the wooden spring available for breaking into sections of the wooden spring of desired lengths, at least one partial score is made in the side of the wooden spring to facilitate breaking the wooden spring, and at least one visual identification mark is made in the side of the wooden spring to indicate the score that facilitates breaking the wooden spring.

[0034] The wooden spring fabric material can be formed into wooden springs with various cross-sectional shapes. The cross-sectional shape of the wooden spring according to the present disclosure can be circular, oval, or chain-linked, and the chain-link cross-sectional shape has two semicircular cross sections A with a radius R, and the two semicircular cross sections are connected at their ends with two linear portions B.

[0035] The wooden springs may be made from any wood, preferably the type of wood from which veneer and plywood are made. For example, aspen and birch are particularly suitable due to their color and price. Aspen is also softer than birch and therefore can be used without soaking or moistening. If birch is preferred, soaking can result in a wooden spring of superior quality. If the raw wood material used to make the wooden spring is not dried, soaking may not be necessary. However, soaking improves the flexibility and formability of the wood strips to be formed into the wooden spring, resulting in a wooden spring of superior quality and a more uniform shape. Similarly, wooden springs can be made from any other at least partially woody herbaceous plant, such as bamboo or reed. The wooden springs can be made from wood strips cut directly from the wooden material, or the wooden material can be processed into veneer, and the wood strips used to make the wooden springs are then cut from the veneer. For example, approximately one square meter of veneer can yield approximately one square meter of wooden spring fabric. For example, aspen is softer and may not require sanding or polishing.In a third aspect, embodiments of the present disclosure provide a method of making a wood spring, comprising: cutting a wood strip from a piece of wood; placing a first end of the wood strip into a spiral dryer preheated to between 60°C and 300°C; and at least partially drying the wood strip by drawing the wood strip at least partially along a tubular spring-forming means of the spiral dryer.

[0036] For greater strength, wood is cut into wood strips in the direction of the wood fibers as much as possible. Once cut, the veneer cools, reducing its flexibility. To increase the flexibility of the wood strips, they are soaked in water at 70°C to 100°C before being placed in a spiral dryer. Wood strips can be made from wood, such as wood blocks. The wood blocks are pre-soaked, cut into plywood boards, and the plywood boards are cut into wood strips along the wood fibers. The moisture content of the wood can be increased by approximately 30%, e.g., 60% to 120%, relative to the maximum moisture content of the corresponding wood. To utilize and recycle veneer and plywood waste, wood strips are cut from the veneer or plywood waste.

[0037] In an embodiment, the method includes pre-moistening the wood. Pre-moistening can be done by immersing the wood in water or in an aqueous solution containing ingredients that change or improve the properties of the wood or that give the wood additional properties, or pre-moistening can be done by steam treatment. Optionally, instead of or in addition to pre-moistening, the method can include post-moistening.

[0038] If the wood is not moistened before cutting the wood strips, pre-soaking or further soaking may be required. Instead of further soaking, it is more efficient to use steaming. The heat and moisture added by steaming the wooden springs makes them flexible, which makes shaping the springs or shaping the ends of the springs easier.

[0039] In an embodiment, the method includes automatically determining a category of the wood strips controlled by a machine vision system, the determining including obtaining digital information of the wood strips by photographing the wood strips, analyzing the digital information in an automated sorting system by machine vision, assigning one or more categories to the wood strips based on the analyzed digital information, and classifying the wood strips based on the assigned one or more categories by the automated sorting system. Alternatively, the categorization step may occur after obtaining the wood strings.

[0040] Determining the quality of wood strips, for example, makes it possible to first classify and remove wood strips that are not suitable for making wooden springs, and then classify the wood strips into quality groups based on the determined parameters and intended use of the resulting wooden springs. Such criteria detected by a machine vision system can be, for example, structural defects in the wood, the absence or number of knots, cracks, curvature, fungal damage, diagonal fibers, and other defects. Other types of quality parameters that can be determined by a machine vision system relate to physical parameters, such as thickness, length, cross-sectional shape, and color. A third type of quality criterion determined by a machine vision system is the surface roughness of the wood strips. This makes it possible to determine whether the resulting wood strips or wooden springs require any sanding or polishing to make the surface smoother.

[0041] Automatic sorting is used to separate and remove unsuitable wood strips and to sort the wood strips by quality, for example, color, size and number of loose wood fibers, etc. The wood strip sorting process can occur any time after the wood strips are cut or after the wood pieces are cut, for example, after sanding the wood strips or after removing the finished wood springs from the dryer, or before packaging.

[0042] According to an embodiment of the present disclosure, a method for making a wood spring includes the steps of soaking wood in water, processing the soaked wood into wood strips, sanding the surfaces of the wood strips, sending the sanded wood strips into a wood spring-shaped spiral dryer at a temperature of at least 60°C, at least partially drying the sanded wood strips in the spiral dryer, and removing the at least partially dried wood strips from the spiral dryer.

[0043] Optionally, the method may further include automatically classifying the digitally photographed wood strips into at least two quality categories under the control of a machine vision system, analyzing the digital information of the digitally photographed wood strips in the automated sorting system by machine vision, and classifying the wood strips into the at least two different quality categories by the automated sorting system.

[0044] In another embodiment of the present disclosure, in a method for making wooden springs, after wood strips are cut from veneers to obtain veneer pieces, automatic sorting is used to sort the veneer pieces, the method comprising the steps of: soaking the wood in water; cutting the wood into veneers; cutting the wood strips from the veneers; digitally photographing the wood strips; analyzing the digital information of the digitally photographed wood strips in an automatic sorting system by machine vision; sorting the wood strips into at least two different quality categories and waste by the automatic sorting system; sanding the faces of the wood strips; sending the sanded wood strips into a wood spring-shaping spiral dryer at a temperature of at least 60°C; at least partially drying the sanded wood strips in the spiral dryer; after at least partial drying, when the wood strips maintain at least the desired shape given by the spiral dryer, withdrawing the obtained wooden springs from the spiral dryer; post-drying the wooden springs; and packaging the wooden springs.

[0045] To prevent adjacent wooden springs from penetrating each other, the spirals of some wooden springs are clockwise and some wooden springs are counterclockwise.

[0046] In a fourth aspect, embodiments of the present disclosure provide a wooden spring fabric comprising a wooden spring according to an embodiment of the present disclosure, wherein two or more side-by-side wooden springs are interwoven with one another through the coils of the wooden springs. The wooden springs may be interwoven in a single layer to form the wooden spring fabric according to the present disclosure. In such embodiments, the wooden spring fabric is flexible and has excellent properties for packaging, packing filler, packing material, etc. Alternatively, to obtain stronger properties of the wooden spring fabric, according to embodiments, the wooden springs may be interwoven such that the interwoven wooden springs form a multi-layered and / or multi-column wooden spring fabric.

[0047] First, the wood spring fabric is formed from wood springs having a circular cross-sectional shape. The term "circular cross-sectional shape" refers to alternative embodiments in this disclosure in which the cross-section of the wood spring is circular.

[0048] Second, the wooden spring fabric is formed from a wooden spring having a cross section with an elliptical shape in the direction of the long semi-axis of the long side of the wooden fabric material. The term "elliptical cross-sectional shape," in reference to alternative embodiments in this disclosure, means that the cross section of the wooden spring is elliptical in the direction of the long semi-axis of the long side of the wooden fabric material. The dotted line k2 indicates the imaginary long side of the fabric material. The use of a wooden spring with an elliptical cross-sectional shape increases the length of the fabric material with the same amount of material, secondly reduces the thickness of the wooden spring fabric, and thirdly makes the side of the wooden spring fabric elastically deformable and more easily compressible in the direction normal to the side.

[0049] Third, the wooden spring fabric is made of wooden springs having a chain-link cross-section, i.e., two semicircular cross-sections A with a radius R, which are connected at their ends with two intermediate linear sections B. The term "chain-link cross-section," in reference to alternative embodiments in this disclosure, means that the cross-section of the wooden spring has two semicircular cross-sections A with a radius R, which are connected at their ends with two intermediate linear sections B. The use of wooden springs having a chain-link cross-section first maximizes the length of the fabric material for the same amount of material, second reduces the thickness of the wooden spring for the maximum amount of material, and third maximizes the longitudinal foldability of the fabric material to save space during transportation and storage.

[0050] The wood springs according to the present disclosure may be woven together by the coils of the wood springs to form a wood fabric material, and various positions at which the wood springs are woven together may be used.

[0051] According to an embodiment of the present disclosure, the axis of the wooden spring may be at an angle α of 70 to 115 degrees or an angle β of 25 to 65 degrees relative to the side of the wooden fabric. Alternatively, the axis of the wooden spring may be oriented in the direction of the long side of the wooden fabric or in the normal direction n of the side of the wooden spring fabric. A first alternative position for weaving wooden springs is cross-braiding. That is, the term "cross-braiding" means that the axis s1 of the wooden spring is at an angle α relative to the side of the wooden spring fabric, and the angle α is 70 to 115 degrees, preferably 85 to 90 degrees, 85 to 95 degrees, or 88 to 90 degrees. The dotted line k1 indicates the imaginary side of the fabric material. The use of cross-braiding allows the wooden spring fabric to be easily rolled longitudinally, making it partially foldable and partially non-foldable.

[0052] Another position for weaving the wooden spring is an oblique braid. That is, the axis s3 of the wooden spring is at an angle β with respect to the side of the wooden spring fabric, where the angle β is 25 to 65 degrees, or 30 to 60 degrees, preferably 40 to 50 degrees, or 42 to 48 degrees. The dotted line k3 indicates the imaginary side of the fabric material. A first advantage of an oblique braid is that no wood splinters are generated when the wooden spring fabric is cut perpendicular to the edge of the wooden spring fabric. Another advantage of an oblique braid is that when the wooden spring fabric is wrapped around the side of the protected object in a square shape, the wooden spring fabric has similar bending and movement characteristics with respect to the side of the protected object.

[0053] The third position where the wooden spring is interwoven is longitudinal braiding. That is, the axis s4 of the wooden spring is oriented along the long side of the wooden spring fabric. The dotted line k4 indicates an imaginary side of the fabric material. The use of longitudinal braiding allows the wooden spring fabric to be easily rolled along the short side, making it partially foldable and partially non-foldable.

[0054] The fourth position where the wooden springs are interwoven is normal braiding. That is, the axis s5 of the wooden spring is oriented in the normal direction n of the side of the wooden spring fabric, and the wooden springs are interwoven in at least four adjacent wooden springs. The dotted line k5 indicates the imaginary side of the fabric material. The use of normal braiding makes the side of the wooden spring fabric material elastically deformable and easily compressible in the normal direction n, thus making it suitable for fixing objects packed inside the package and filling empty space inside the package.

[0055] To color a wooden spring, the spring is covered with a layer of coloring agent. To obtain a lighter color, the wood strip or spring is whitened or covered with a layer of white paint or a layer of paint that gives a white hue. To protect the spring from moisture, the spring is covered with a moisture protective layer. To maintain the shape and strength of the spring in a humid environment, the spring may be coated with a layer of varnish, paint, oil, or dye. To protect the spring from fungal damage, the spring is immersed in or covered with a fungicide. To change the color of the spring, the spring is covered with a layer of paint. To change the color of the spring, for example, to green, pink, yellow, blue, etc., the spring is covered with a layer of paint or a layer of paint that gives the desired hue. To accelerate the soaking process and increase the flexibility of the wood, the wood is immersed in water at 30°C to 100°C, preferably 70°C to 90°C.

[0056] In an embodiment, the temperature of the spiral dryer may be in the range of 80° C. to 300° C. or in the range of 110° C. to 200° C. In an embodiment of the present disclosure, in a wooden spring comprising a wood strip, the wooden spring has an average thickness a, an average width b, and a stretched length l, and the coil of the wooden spring is formed into a spiral shape using the method for making a wooden spring, and the coil has an average diameter d and an average pitch s, where a is 0.2 mm to 2 mm, b is 1 mm to 10 mm, l is 10 mm to 5000 mm, d is 6 mm to 60 mm, and s is 4 mm to 40 mm.

[0057] In some embodiments, the average diameter d may be in the range of 6 mm to 60 mm, preferably 7 mm to 12 mm, or 8 mm to 16 mm. In some embodiments, the average pitch s may be in the range of 4 mm to 40 mm, or 7 mm to 14 mm, preferably 5 mm to 10 mm. In some embodiments, the stretched length l may be in the range of 500 mm to 2000 mm, or 600 mm to 1600 mm. In some embodiments, the spiral of the wooden spring may be clockwise or counterclockwise. In some embodiments, the average width b2 of the coils of the wooden spring is greater than the average distance c2 between adjacent coils of the wooden spring. This prevents the wooden springs from penetrating each other during use. In some embodiments, the average pitch s of the wooden spring in the longitudinal direction may be variable. In some embodiments, the wooden spring may be covered with a moisture protection layer, a color-matching layer, or a paint layer.

[0058] According to some embodiments of the present disclosure, the wooden spring may further include at least one of the following: a distance of the end of the wooden spring from the first bend of the wooden spring is less than an average notch length of the wooden spring; the end of the wooden spring is at least partially bent outside the wooden spring; the end of the wooden spring is at least partially bent inside the wooden spring.

[0059] According to some embodiments of the present disclosure, the wooden spring may further include at least one of the following: at least one at least partial cut made in a side of the wooden spring to facilitate breaking of the wooden spring; at least one visual identification mark made in a side of the wooden spring to indicate the cut that facilitates breaking of the wooden spring.

[0060] According to some embodiments of the present disclosure, the wooden spring may further include at least one of a portion of the end of the wooden spring having an average diameter d2 that is entirely smaller than the average diameter d1 of the wooden spring, and the portion of the end of the wooden spring having the smaller average diameter d2 being partially pressed into the portion of the end of the wooden spring having the average diameter d1.

[0061] The wooden springs according to the present disclosure may be packed by compressing the wooden springs at their ends along their axes. According to embodiments of the present disclosure, the wooden springs may be woven into a wooden fabric. The wooden fabric according to the present disclosure may be woven with wooden springs comprising spiral-shaped wood strips, and the wooden springs may be woven with at least two side-by-side wooden springs to form the wooden spring fabric. According to embodiments, the axes of the wooden springs in the wooden fabric form an angle α of 70° to 115° or 85° to 95° with respect to the long sides of the wooden fabric. According to embodiments, the axes of the wooden springs in the wooden fabric form an angle β of 30° to 60° or 40° to 50° with respect to the long sides of the wooden fabric.

[0062] In the embodiment, the axis of the wooden spring is oriented in the normal direction n of the side of the wooden fabric material, and the wooden springs are connected to each other by interweaving four adjacent wooden springs.

[0063] According to an embodiment, the cross-sectional shape of the wooden spring is elliptical, oriented along the longitudinal semi-axis of the long side of the wooden fabric material from which the wooden spring is made. According to an embodiment, the cross-sectional shape of the wooden spring is a chain link shape with two semicircular cross sections A with a radius R, which are connected at their ends with two intermediate linear sections B. According to an embodiment, the cross-sectional shape of the wooden spring is circular.

[0064] [Detailed description of the drawings] 1 to 13 show an embodiment of a wooden spring. The coil thickness a of the wooden spring is 0.2 mm to 2.0 mm, preferably 0.4 mm to 0.6 mm, the width b is 1 mm to 10 mm, preferably 3 mm to 6 mm, and the stretched length l is 0.1 meters to 5 meters (m), preferably 0.5 m to 2 m. The wooden spring is made into a spiral, i.e., tension spring, shape using a method for making wooden springs. The outer diameter d of the wooden spring coil is 6 mm to 60 mm, preferably 7 mm to 12 mm, and the coil pitch of the wooden spring is 4 mm to 40 mm, preferably 5 mm to 10 mm.

[0065] 4 to 7 show embodiments of the shape of wooden springs in which the coils prevent adjacent wooden springs from penetrating each other.

[0066] FIG. 4 shows embodiments of wooden springs with different coil directions, with the spiral of wooden spring 201 being clockwise and the spiral of wooden spring 202 being counterclockwise.

[0067] 5-6 show an embodiment of a wooden spring with narrow-pitch coils, where the average width b2 of the coils of the wooden spring is greater than the average distance c2 between the coils of the wooden spring.

[0068] FIG. 7 shows an embodiment of a wooden spring with different variable pitch lengths.

[0069] Figures 8-9 show three types of ends that make the ends of wooden springs more secure, prevent the ends from getting stuck together, and make the ends look more presentable.

[0070] Figure 8 shows a wooden spring with a first type of end, where the end of the wooden spring is bent adjacent to the coil, i.e. the distance from the end of the wooden spring to the coil of the wooden spring adjacent to said end is less than the average length of the pitch of the wooden spring.

[0071] FIG. 9 shows an embodiment of a wooden spring having second and third types of ends, one end being partially bent inside the wooden spring and the second end being partially bent outside the wooden spring.

[0072] Figures 10-12 show an embodiment of a solution for separating wooden springs, where the sides of the wooden spring 401 are provided with V-shaped notches 402 to facilitate breaking of the wooden spring, and the wooden spring is marked on the outside of the wooden spring 401 by marks 403 on either side of the notches 402, which may be colored or burnt.

[0073] 13 shows an embodiment of a solution for joining wooden springs, where the upper ends 503, 504 of the wooden springs 501, 502 have a smaller average diameter d2 than the average diameter d1 of the wooden springs 501, 502, and the portion 504 of the lower wooden spring 502 with the smaller average diameter d2 is partially compressed and placed inside the upper wooden spring 501. In this way, 2 to 1000 wooden springs can be connected in series, e.g., in the case of a longer composite wooden spring, wound, for example, in a roll, and the user can easily separate sections of the wooden spring by pulling.

[0074] FIG. 14 shows another embodiment in which two wooden springs are joined together, with the two springs 101 and 102 being partially pressed together at their ends.

[0075] 15-17 show an embodiment of a cross-woven fabric material from wooden springs having a circular cross-sectional shape, where the wooden springs are woven together with two side wooden springs to form an interwoven wooden spring fabric.

[0076] 18-20 show an embodiment of a cross-woven fabric having an oval cross-sectional shape which differs from the previous embodiment in that the cross-sectional shape of the wooden spring is oval.

[0077] 21-23 show an embodiment of a cross-woven wooden spring fabric having a chain link shaped cross section which differs from the other embodiments in that the wooden spring deployment profile is a chain link shape.

[0078] FIG. 24 shows an embodiment of a wooden spring having a circular cross-sectional shape, which differs from the previous embodiment in that the wooden springs are interwoven at an angle, an embodiment of a wooden fabric interwoven with angled wooden springs.

[0079] 25-27 show an embodiment of a wooden spring with a circular cross-sectional shape, an embodiment of a longitudinally interwoven wooden fabric, which differs from the previous embodiment in that the wooden spring is longitudinally interwoven.

[0080] 28 and 29 show an embodiment of a wood fabric with normal interwoven wood springs having circular cross-sectional shapes, which differs from the previous embodiment in that the wood springs are interwoven with one another by normal interweaving.

[0081] Figures 30 to 33 show wooden springs from which the wooden spring fabric can be made. The coil thickness a of the wooden spring is 0.2 mm to 2.0 mm, preferably 0.4 mm to 0.6 mm, the width b is 1 mm to 10 mm, preferably 3 mm to 6 mm, and the stretched length l is 0.1 meters to 5 meters (m), preferably 0.5 m to 2 m. The wooden spring is made into a spiral, i.e., tension spring, shape using a method for making wooden springs. The outer diameter d of the wooden spring coil is 6 mm to 60 mm, preferably 7 mm to 12 mm, and the coil pitch of the wooden spring is 4 mm to 40 mm, preferably 5 mm to 10 mm.

[0082] FIG. 34 shows an embodiment of a wood spring fabric made of interwoven wood springs joined together, with 103 indicating the joints within the wood spring fabric.

[0083] 35 illustrates a spiral dryer for making wooden springs according to an embodiment of the present disclosure, the spiral dryer 600 comprising a tubular spring forming means 601, a heat source within the tubular spring forming means 601, and a drive mechanism configured to draw a wood strip 608 along the tubular spring forming means and wind the wood strip into a wooden spring 609, the drive mechanism comprising belts 602a, 602b attached around the tubular spring forming means 601 and a belt drive 603 configured to move the belts 602a, 602b along the spring forming means 601, the spiral dryer further comprising a belt guide 604 and a belt tensioner 605. The tubular spring forming means 601 comprises a spiral groove 606 formed on an outer surface of the tubular spring forming means, the spiral groove 606 having a bottom 607 and a side 610.

[0084] The present disclosure is not limited to the embodiments shown in the figures and described above, but may be embodied in other embodiments within the scope of the appended claims. The present disclosure is not limited to the embodiments shown in the figures and described above, but includes terms that refer to alternative embodiments and all possible combinations of embodiments with "circular cross-sectional shape," "oval cross-sectional shape," "chain link cross-sectional shape," "normal braid," "cross-braid," and "longitudinal interweaving." The following are some embodiments of the present invention. [Aspect 1] A wooden spring formed from a strip of wood, said wooden spring comprising: a spiral having a first end and a second end, the first end having a diameter (d2) and the second end having a diameter (d3); a plurality of coils between the first end and the second end of the spiral; Equipped with The average thickness (a) of the spiral body is 0.2 mm to 2.0 mm, The average width (b, b2) of the spiral is 1 mm to 10 mm, The average diameter (d) of the coil is 6 mm to 60 mm, The average pitch (s) of the coil is 4 mm to 40 mm, The wooden spring has an extended length l of 10 mm to 5000 mm. [Aspect 2] The wooden spring according to aspect 1, wherein the average width (b, b2) is greater than the average distance (c2) between two adjacent coils. [Aspect 3] 3. The wooden spring of claim 1 or 2, wherein the wooden spring comprises at least one of the following: the distance of the first end or the second end from the first coil is less than the average pitch; - the first end is at least partially bent outward from the wooden spring; - the second end is at least partially bent outward from the wooden spring; - the first end is at least partially bent inside the wooden spring; - the second end is at least partially bent inside the wooden spring. [Aspect 4] The wooden spring according to any one of aspects 1 to 3, wherein the average diameter (d2) is smaller than the average diameter (d3). [Aspect 5] 5. The wooden spring according to any one of aspects 1 to 4, wherein the wooden spring comprises one or more break marks. [Aspect 6] 6. The wooden spring according to any one of aspects 1 to 5, wherein the cross-sectional shape of the wooden spring is circular, oval, or chain link. [Aspect 7] A spiral dryer (600) for making wooden springs, comprising: - a tubular spring forming means (601) having a first end and a second end; a heat source configured to heat the tubular spring forming means to a temperature between 60°C and 300°C; a drive mechanism configured to draw the wood strip along said tubular spring forming means and wind said wood strip into a spiral; A spiral dryer comprising: [Aspect 8] 8. The spiral dryer of claim 7, wherein the tubular spring forming means comprises a helical groove formed on an outer surface of the tubular spring forming means. [Aspect 9] 9. The spiral dryer of claim 7 or 8, wherein the heat source is configured to heat the tubular spring forming means from at least an inside of the tubular spring forming means or an outside of the tubular spring forming means. [Aspect 10] 10. The spiral dryer of any one of aspects 7 to 9, wherein the drive mechanism comprises one or more transmission means attached to the periphery of the tubular spring forming means, and a drive device configured to move the one or more transmission means along the spring forming means. [Aspect 11] 11. The spiral dryer according to any one of aspects 7 to 10, further comprising a grinding mechanism. [Aspect 12] 1. A method of making a wooden spring, comprising: - cutting wood strips from the wood; placing the first end of the wood strip into a spiral dryer (600) preheated to between -60°C and 300°C; - at least partially drying the wood strip by drawing the wood strip at least partially along a tubular spring forming means of the spiral dryer; A method comprising: [Aspect 13] 13. The method of claim 12, wherein the method comprises pre-moistening the wood. [Aspect 14] 14. The method of claim 12 or 13, wherein the method comprises sanding a face of the wood strip or sanding a face of the wooden spring. [Aspect 15] The method comprises: and automatically determining a category of the wood strip controlled by a machine vision system, said determining including: - obtaining digital information of said wood strip by photographing said wood strip; - analyzing said digital information in an automated sorting system by machine vision; - assigning one or more categories to the wood strips based on the analyzed digital information; - classifying the wood strips by the automated sorting system based on the one or more assigned categories; 15. The method according to any one of aspects 12 to 14, comprising: [Aspect 16] A wooden spring fabric comprising the wooden spring according to any one of aspects 1 to 6, wherein two or more side-by-side wooden springs are interwoven with each other through the coils of the wooden springs. [Aspect 17] 17. The wood spring fabric of claim 16, wherein the interwoven wood springs form a multi-layered and / or multi-pillar wood spring fabric. [Aspect 18] 18. The wooden spring material according to claim 16 or 17, wherein the axis of the wooden spring is at an angle α of 70 degrees to 115 degrees or an angle β of 25 degrees to 65 degrees relative to the side surface of the wooden material. [Aspect 19] The wooden spring fabric according to any one of aspects 16 to 18, wherein the axis of the wooden spring is oriented in the direction of the long side of the wooden fabric or in the normal direction n of the side of the wooden spring fabric. [Aspect 20] 7. Use of a wooden spring according to any one of the aspects 1 to 6 for packaging material, for packaging filler, for packaging, for making curtains, for making mattresses, for making interior or design elements.

Claims

1. A wooden spring formed of wood strips forming a wooden spring fabric, said wooden spring having a homogenous shape, said wooden spring being interwoven side by side with at least two other wooden springs, said wooden spring comprising: a spiral having a first end and a second end, said first end having a diameter and said second end having a diameter; a plurality of coils between said first end and said second end of said spiral; Equipped with The average thickness of the spiral is 0.2 mm to 2.0 mm; the average width of the spiral is between 2 mm and 10 mm; The coil has an average diameter of 6 mm to 60 mm; The average pitch of the coil is 4 mm to 40 mm; The wooden spring has an extended length l of 10 mm to 5000 mm.

2. 2. The wooden spring of claim 1, wherein said average width is greater than the average distance between two adjacent coils.

3. 3. The wooden spring of claim 1, wherein the position of the first end is different from the position of the second end, and the wooden spring comprises at least one of the following: the distance of the first end or the second end from the first coil is less than the average pitch; - said first end is at least partially bent outwards from said wooden spring; - said second end is at least partially bent outwards from said wooden spring; - said first end is at least partially bent inside said wooden spring; - said second end is at least partially bent inside said wooden spring;

4. The wooden spring according to any one of claims 1 to 3, wherein the average diameter of the first end of the wooden spring is smaller than the average diameter of the second end of the wooden spring.

5. The wooden spring according to any one of claims 1 to 4, wherein the wooden spring comprises one or more break marks.

6. The wooden spring according to any one of claims 1 to 5, wherein the cross-sectional shape of the wooden spring is circular, oval or chain link.

7. Wooden spring according to any of claims 1 to 6, wherein the wooden spring is made of wood and / or at least partly woody herbs.

8. 1. A spiral dryer for producing a wooden spring having a uniform shape, said wooden spring being interwoven side by side with at least two other wooden springs to form a wooden spring fabric, said spiral dryer comprising: - a tubular spring forming means having a first end and a second end, the tubular spring forming means comprising a spiral groove formed on an outer surface of said tubular spring forming means; a heat source adapted to heat said tubular spring forming means to between 60°C and 300°C; a drive mechanism comprising one or more transmission means in the form of belts or chains attached around the tubular spring forming means, and a drive configured to move the one or more transmission means along the spiral groove of the tubular spring forming means, drawing the wooden strip between the transmission means and the bottom of the spiral groove of the tubular spring forming means, pulling the wooden strip along the spiral groove and winding the wooden strip into a wooden spring; A spiral dryer comprising:

9. 9. The spiral dryer of claim 8, wherein the heat source is configured to heat the tubular spring forming means from at least the inside of the tubular spring forming means or the outside of the tubular spring forming means.

10. 10. The spiral dryer of claim 8 or 9, wherein the spiral dryer further comprises a grinding mechanism.

11. 1. A method of making a wooden spring forming a wooden spring fabric, said wooden spring being woven together with at least two side-by-side wooden springs to form a wooden spring fabric, said method comprising: Cutting wood strips from the wood; and automatically determining the category of said wood strips controlled by a machine vision system, obtaining digital information of the wood strip by photographing the wood strip; analyzing the digital information within an automated sortation system by machine vision; the determining includes assigning one or more categories to the wood strips based on the analyzed digital information, and classifying, by the automated sorting system, the wood strips based on the assigned one or more categories; placing a first end of the wood strip into a spiral dryer preheated to between 60°C and 300°C; at least partially drying the wood strip by drawing the wood strip at least partially along a tubular spring forming means of the spiral dryer; A method comprising:

12. The method of claim 11 , wherein the method includes pre-moistening the wood.

13. 13. The method according to claim 11 or 12, wherein the method comprises sanding the face of the wood strip or sanding the face of the wooden spring.

14. A wooden spring fabric comprising a wooden spring according to any one of claims 1 to 7, wherein two or more side-by-side wooden springs are interwoven with each other through the coils of the wooden spring.

15. 15. The wooden spring fabric of claim 14, wherein the interwoven wooden springs form a multi-layered and / or multi-pillar wooden spring fabric.

16. 16. The wooden spring fabric according to claim 14 or 15, wherein the axis of the wooden spring is at an angle α of 70 degrees to 115 degrees or an angle β of 25 degrees to 65 degrees with respect to the side of the wooden spring fabric.

17. The wooden spring fabric according to any one of claims 14 to 16, wherein the axis of the wooden spring is oriented in the direction of the long side of the wooden spring fabric or in the normal direction n of the side of the wooden spring fabric.

18. Use of a wooden spring article according to any one of claims 1 to 7 for packing material, for packing filler, for packaging, for making curtains, for making mattresses, for making interior or design elements.

Images