Preparation and application of double-flexible-framework composite bamboo-based spring material and mattress

Abstract

The invention relates to the technical field of bamboo springs, in particular to a preparation method of a double-flexible-framework composite bamboo-based spring material, which comprises the following steps: S1, drawing bamboo wood to obtain bamboo filaments, winding environment-friendly wires on the bamboo filaments to obtain a double-flexible framework, and performing water bath softening and shaping treatment on the double-flexible framework to obtain a double-flexible-framework bamboo-based spring; s2, the double-flexible-framework bamboo-based spring treated in the S1 is subjected to resin coating modification treatment; and S3, the modified double-flexible-framework bamboo-based spring treated in the S2 is polished, and the double-flexible-framework composite bamboo-based spring is obtained. The bamboo material is wound by the environment-friendly wire softened through hydro-thermal treatment, the spiral spring is wound, the double-flexible-body spring framework is constructed, resin coating modification is conducted, the original high-elasticity and high-toughness structure of the bamboo material is kept, the method is simple and easy to implement, the adjustable range of the spring rigidity is large, meanwhile, the double-flexible-framework composite bamboo-based spring mattress is light in weight, low in carbon and environmentally friendly, and the application range is wide. And quantitative support requirements of people with different body types and weights can be met.

Description

Technical Field

[0001] The invention relates to the technical field of bamboo springs, and in particular to the preparation and application of a double-flexible skeleton composite bamboo-based spring material and a mattress. Background Art

[0002] In the current market, spring mattresses mostly use metal springs as the supporting structure. Such mattresses are usually heavy and inconvenient to carry. Although metal spring mattresses are popular due to their excellent support and good air permeability, their production process is often accompanied by high energy consumption and high emissions, which easily pollutes the environment. The traditional bamboo fiber mattress manufacturing requires flattening, dissociation, gluing, and molding of bamboo materials, which is complex and energy-intensive. This bamboo fiber mattress manufacturing method destroys the original high elasticity and high toughness structure of bamboo materials, which is not conducive to the reshaping of the elastic structure of the mattress filling material. At the same time, bamboo fiber mattresses are hard and have poor air permeability, which affects the comfort of use and cannot achieve precise regulation of the softness and hardness of the mattress to meet the needs of different groups of people. Therefore, studying substitutes for metal springs and developing green, low-carbon and environmentally friendly biomass mattress filling materials with excellent performance will be an inevitable trend for the future development of the mattress industry.

[0003] Bamboo has a short growth cycle, strong regeneration ability, fast reproduction speed, is green and pollution-free, has good degradability, biocompatibility, high strength and excellent toughness, and its processing technology is simple, so it is widely used in many fields such as construction, home furnishing and textiles. In addition, bamboo exhibits excellent flexibility. The bamboo spring prepared by winding molding has a specific stiffness comparable to that of metal springs for mattresses, but it has shortcomings such as low absolute stiffness level and poor dimensional stability. Therefore, it is necessary to increase the stiffness of bamboo springs to broaden their stiffness range and improve their dimensional stability to meet the support performance of mattresses and their quantitative regulation, and realize the lightweight design of mattresses.

[0004] Inventive Content

[0005] The purpose of the present invention is to solve the above-mentioned shortcomings and provide a preparation and application of a double flexible skeleton composite bamboo-based spring material and a mattress.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A method for preparing a double flexible skeleton composite bamboo-based spring material comprises the following steps:

[0008] S1. Drawing bamboo material to obtain bamboo filaments, winding environmentally friendly wires on the bamboo filaments to obtain a double-flexible skeleton, and performing a water bath softening and shaping treatment on the double-flexible skeleton to obtain a double-flexible skeleton bamboo-based spring;

[0009] S2. Perform resin coating modification on the double-flexible skeleton bamboo-based spring treated by S1:

[0010] S2.1, mixing and stirring the resin, curing agent and filler to obtain a modified solution;

[0011] S2.2, modifying the double-flexible-frame bamboo-based spring by spraying the modified solution on the surface of the double-flexible-frame bamboo-based spring or immersing the double-flexible-frame bamboo-based spring in the modified solution and turning it over;

[0012] S2.3, placing the modified double-flexible frame bamboo-based spring horizontally on the silicone bracket, and after the modified solution on the surface of the double-flexible frame bamboo-based spring is solidified, a modified double-flexible frame bamboo-based spring is obtained;

[0013] S3. Polishing the modified double-flexible skeleton bamboo-based spring treated by S2 to obtain a double-flexible skeleton composite bamboo-based spring.

[0014] Further, the S1 includes:

[0015] S1.1. Wrap the environmentally friendly wire around the bamboo wire to obtain a double flexible skeleton;

[0016] S1.2, treating the obtained dual flexible skeleton in a water bath at 80-100°C for 0.5-2h;

[0017] S1.3, bend and wrap the double flexible skeleton treated in S1.2 and then continue to bathe in water for 0.5 to 2 hours;

[0018] S1.4, wrap the double flexible skeleton treated in S1.3 into the coil spring rod core and continue water bathing for 1 to 2 hours;

[0019] S1.5. After the water bath is finished, the bamboo wire is fixed on the coil spring rod core to be shaped and dried to obtain a double-flexible skeleton bamboo-based spring.

[0020] Furthermore, the resin in S2 is epoxy resin, polyurethane resin, acrylic resin, bio-based resin, and the filler is a filler, a stabilizer or a nanomaterial, and the filler specifically includes nano-silicon dioxide, nano-titanium dioxide, and graphene oxide, wherein the mass ratio of resin, curing agent and filler is 20-60:10:1-4.

[0021] Furthermore, the bamboo filaments are 0.5-2.5m long, and have a diameter or side length of 2-6mm; the environmentally friendly thread is made of green, environmentally friendly, renewable thread made of cotton thread, hemp thread, or bamboo fiber thread, and has a diameter between 0.2-3mm.

[0022] Furthermore, the wire diameter range of the composite bamboo-based spring is 2-3 mm, 3-4 mm, 4-5 mm, 5-6 mm; the diameter range is 4-5 cm, 5-6 cm, 6-7 cm, 7-8 cm; the free height is 6-28 cm; the density range is 0.6-2.0 g / cm 3, the stiffness range is 0.10~1.80N / mm, and the specific stiffness range is 0.16~0.90.

[0023] A double-flexible frame composite bamboo-based spring mattress, using the double-flexible frame composite bamboo-based spring prepared by the above preparation method as a mattress core, comprising a mattress upper layer, a mattress support layer and a mattress lower surrounding edge;

[0024] The core layer of the upper layer of the mattress is made of one or a combination of latex, foam sponge, wool, horse hair, camel hair, down, and loofah silk;

[0025] The core layer of the mattress support layer is composed of a support layer periphery and a plurality of double-flexible skeleton composite bamboo-based spring units wrapped therein;

[0026] Each of the double-flexible skeleton composite bamboo-based spring units is an independent bagged structure, and includes a double-flexible skeleton composite bamboo-based spring body and a non-woven bag covering the double-flexible skeleton composite bamboo-based spring body.

[0027] Furthermore, one side or multiple consecutive sides of the supporting layer are provided with an opening and closing opening for installing and removing the double-flexible skeleton composite bamboo-based spring unit; the multiple double-flexible skeleton composite bamboo-based spring units are arranged in a matrix arrangement therein, and a dividing line is provided between adjacent double-flexible skeleton composite bamboo-based spring units.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] (1) The double-flexible skeleton composite bamboo-based spring of the present invention is green, low-carbon, environmentally friendly, degradable, renewable, and can be formed only by hydrothermal softening. The preparation process is simple, and it is energy-saving and environmentally friendly, overcoming the shortcomings of high energy consumption and high emissions in the production of metal springs;

[0030] (2) The present invention uses hydrothermal treatment to soften bamboo materials and maintain the original structure of bamboo materials. The method is simple and easy to implement, and overcomes the shortcomings of traditional fiber mattress products that require the flattening, dissociation, gluing, and molding of raw materials, which are complex processes, high energy consumption, and damage to the original high elasticity and high toughness structure of bamboo materials.

[0031] (3) The present invention adjusts the stiffness of the double flexible skeleton composite bamboo-based spring by various means, and the stiffness is in the range of 0.10 to 1.80 N / mm. The adjustable stiffness range is large, which overcomes the shortcomings of plant fiber mattresses that are hard and the elastic structure of the filling material is difficult to reshape;

[0032] (4) The double flexible skeleton composite bamboo-based spring of the present invention has a density of only 0.6-2.0 g / cm 3 , which is only 6.7~8.0g / cm2 of the common metal spring density 3 1 / 13 to 1 / 3 of the original size, overcoming the disadvantage of heavy weight of metal spring mattresses and achieving lightweight design of mattresses;

[0033] (5) The stiffness of the double flexible skeleton composite bamboo-based spring of the present invention is 0.10-1.80 N / mm, and the density is only 0.6-2.0 g / cm 3 , the density of the metal spring is 6.7~8.0g / cm 3 The stiffness of commonly used metal springs in mattresses is 0.08-0.2N / mm. The specific stiffness of the double flexible skeleton composite bamboo-based spring is 0.16-0.90, and the specific stiffness of the metal spring is 0.010-0.028. The specific stiffness of the double flexible skeleton composite bamboo-based spring is much greater than that of the metal spring.

[0034] (6) The rigidity of the double flexible skeleton composite bamboo-based spring of the present invention can be quantitatively controlled to achieve quantitative control of the support performance of the mattress, and is suitable for people of different body shapes and weights;

[0035] (7) The stiffness classification of the double flexible skeleton composite bamboo-based spring of the present invention establishes a stiffness classification standard for double flexible skeleton composite bamboo-based springs of different specifications and qualities, overcomes the elasticity difference problem caused by the gradient distribution of bamboo materials, and selects double flexible skeleton composite bamboo-based springs of different stiffness grades according to support and elasticity requirements;

[0036] (8) The present invention makes full use of the flexibility of bamboo, and realizes the stiffness improvement and quantitative regulation of the double flexible skeleton composite bamboo-based spring by using bamboo and environmentally friendly wire as the structural design of the double flexible skeleton composite epoxy resin rigid layer, thereby overcoming the shortcomings of too low stiffness, insufficient supporting force and poor shape stability after bamboo winding molding;

[0037] (9) The present invention adopts multi-stage hydrothermal treatment to remove the wax layer and extracts of bamboo, and combines it with resin coating and sealing to overcome the shortcomings of bamboo being easy to absorb moisture, deform and mildew.

[0038] (10) The present invention uses fillers, stabilizers or non-toxic and harmless fillers such as nanomaterials to modify the resin, thereby improving the thermal stability, mechanical property stability and corrosion resistance of the resin, overcoming the deficiency that the physical and mechanical properties of the resin material are easily affected by temperature, and improving the dimensional stability and stiffness of the double flexible skeleton composite bamboo-based spring and the stability of the anti-fatigue performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0040] Figure 1 This is a schematic diagram of the double-flexible skeleton composite bamboo-based spring structure of the present invention;

[0041] Figure 2 yes Figure 1 The cross-sectional diagram at A in the middle;

[0042] Figure 3 yes Figure 1 The cross-sectional diagram at B in the middle;

[0043] Figure 4 It is a schematic diagram of the structure of a columnar spiral independent bagged composite bamboo-based spring unit of the present invention;

[0044] Figure 5 It is a schematic diagram of the structure of the double-flexible skeleton composite bamboo-based spring in the spring of the present invention;

[0045] Figure 6 It is a schematic diagram of the composite bamboo-based spring structure of the present invention with double flexible frames and different upper and lower stiffnesses;

[0046] Figure 7 This is a schematic diagram of the structure of a double-flexible frame composite bamboo-based spring mattress of the present invention;

[0047] Figure 8 It is a schematic diagram of a double-flexible skeleton composite bamboo-based spring module package of the present invention.

[0048] In the figure: 1. Double flexible skeleton composite bamboo-based spring body; 11. Bamboo silk; 12. Environmentally friendly line; 13. Modified resin; 2. Double flexible skeleton composite bamboo-based spring unit; 21. Non-woven bag; 3. Mattress; 31. Upper fabric composite layer; 32. Comfort layer; 33. Spring core layer; 331. Inner liner cover; 34. Mattress base layer; 35. Mattress edge; 36. Lower fabric composite layer; 4. Spring module package; 41. Non-woven bag. DETAILED DESCRIPTION

[0049] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0051] A method for preparing a double flexible skeleton composite bamboo-based spring material comprises the following steps:

[0052] S1. Drawing bamboo material to obtain bamboo filaments, winding environmentally friendly wires on the bamboo filaments to obtain a double-flexible skeleton, and performing a water bath softening and shaping treatment on the double-flexible skeleton to obtain a double-flexible skeleton bamboo-based spring;

[0053] S1.1. Wrap the environmentally friendly wire around the bamboo wire to obtain a double flexible skeleton;

[0054] S1.2, treating the obtained dual flexible skeleton in a water bath at 80-100°C for 0.5-2h;

[0055] S1.3, bend and wrap the double flexible skeleton treated in S1.2 and then continue to bathe in water for 0.5 to 2 hours;

[0056] S1.4, wrap the double flexible skeleton treated in S1.3 into the coil spring rod core and continue water bathing for 1 to 2 hours;

[0057] S1.5. After the water bath is finished, the bamboo wire is fixed on the coil spring rod core to be shaped and dried to obtain a double-flexible skeleton bamboo-based spring.

[0058] S2. Perform resin coating modification on the double-flexible skeleton bamboo-based spring treated by S1:

[0059] S2.1, mixing and stirring the resin, curing agent and filler to obtain a modified solution;

[0060] S2.2, modifying the double-flexible-frame bamboo-based spring by spraying the modified solution on the surface of the double-flexible-frame bamboo-based spring or immersing the double-flexible-frame bamboo-based spring in the modified solution and turning it over;

[0061] S2.3. Place the modified double-flexible bamboo-based spring horizontally on a silicone bracket, and after the modified solution on the surface of the double-flexible bamboo-based spring is solidified, a modified double-flexible bamboo-based spring is obtained.

[0062] The resin is an environmentally friendly, non-toxic and harmless resin such as epoxy resin, polyurethane resin, acrylic resin, bio-based resin, etc. The curing agent is a curing agent matching the above resin, and the filler is a filler, a stabilizer or a nanomaterial, etc. The filler specifically includes but is not limited to nano silicon dioxide, nano titanium dioxide, graphene oxide, etc., wherein the mass ratio of resin, curing agent and filler is 20-60:10:1-4.

[0063] S3. Polishing the modified double-flexible skeleton bamboo-based spring treated by S2 to obtain a double-flexible skeleton composite bamboo-based spring.

[0064] Example 1

[0065] A method for preparing a double-flexible skeleton composite bamboo-based spring of this embodiment includes the following steps:

[0066] 1. Preparation of dual flexible skeletons

[0067] (1) Bamboo is made into bamboo strips through a wire drawing process, and cotton threads are evenly wound around the bamboo strips at a certain interval. The interval between the winding of the cotton threads can be set to 0, 1 mm, 2 mm, etc.;

[0068] (2) heat treating the bamboo strips obtained in the previous step in a 99° C. water bath for 0.5 h;

[0069] (3) Place the bamboo strips obtained in the previous step into a round tube with spiral grooves on the inner wall and continue to water bath for 0.5 h;

[0070] (4) After the water bath, the spring was dried in an oven at 103°C for 0.5 h to obtain a double flexible skeleton bamboo-based spring.

[0071] 2. Preparation of double flexible skeleton composite bamboo-based spring

[0072] (1) Epoxy resin E51, 593 curing agent and 15 nm nano-silicon dioxide were mixed in a mass ratio of 20:10:1 and stirred with a rotor for 5 minutes to make the mixture uniform;

[0073] (2) The double flexible skeleton bamboo-based spring obtained in step 1 is modified by resin coating using an immersion flip coating method, which is completed in 0.5 minutes;

[0074] (3) The double flexible skeleton bamboo-based spring modified by resin coating is placed horizontally on the silicone bracket, and the excess resin automatically flows into the waste liquid collection container under the bracket. After being placed at room temperature for 0.5 hours, it is placed in an oven;

[0075] (4) The resin was dried in an oven at 80°C for 0.5 h to accelerate the curing of the resin, and then the spring was taken out and cooled to room temperature to obtain a double flexible skeleton composite bamboo-based spring.

[0076] 3. Sorting of double flexible skeleton composite bamboo-based springs

[0077] The double-flexible skeleton composite bamboo-based spring obtained in step 2 is polished, and then the double-flexible skeleton bamboo-based springs of the same specification are divided into several stiffness levels from small to large according to the quality difference, and finally the double-flexible skeleton bamboo-based spring bodies of different specifications and different stiffness levels are obtained.

[0078] Specifically, in this embodiment, the wire diameter range of the double flexible skeleton bamboo-based spring body is divided into 2-3mm, 3-4mm, 4-5mm, 5-6mm; the caliber range of the double flexible skeleton bamboo-based spring body is 4-5cm, 5-6cm, 6-7cm, 7-8cm; the free height of the double flexible skeleton bamboo-based spring body is 6-28cm; the density range of the double flexible skeleton bamboo-based spring body is 0.6-2.0g / cm 3 , the stiffness is between 0.1 and 1.3 N / mm.

[0079] Example 2

[0080] 1. Preparation of dual flexible skeletons

[0081] (1) splitting bamboo into bamboo strips and tightly wrapping the hemp rope around the bamboo strips;

[0082] (2) subjecting the bamboo strips wrapped with hemp rope obtained in the previous step to heat treatment in a 99° C. water bath for 0.5 h;

[0083] (3) The bamboo strips wrapped with hemp rope obtained in the previous step are bent spirally into a round tube with spiral grooves on the inner wall, and the water bath is continued for 0.5 h;

[0084] (4) After the water bath is completed, the bamboo strips are slowly rotated out along the mold wall after cooling for two days to obtain a double flexible skeleton bamboo-based spring.

[0085] 2. Composite epoxy resin

[0086] (1) Epoxy resin E51, 593 curing agent and 15 nm nano-silicon dioxide were mixed in a mass ratio of 20:10:1 and stirred with a rotor for 5 minutes to make the mixture uniform;

[0087] (2) The double flexible skeleton bamboo-based spring treated in step 1 is modified by resin coating by slowly and evenly rotating the double flexible skeleton bamboo-based spring to fully coat it with resin within 0.5 to 2 minutes, and the excess resin automatically flows into the waste liquid collection container under the bracket;

[0088] (3) drying the double flexible skeleton bamboo-based spring modified by resin coating obtained in the previous step in a natural environment;

[0089] (4) After drying for two days, a double flexible skeleton composite bamboo-based spring is obtained.

[0090] 3. Sorting of double flexible skeleton composite bamboo-based springs

[0091] The double-flexible skeleton composite bamboo-based spring obtained in step 2 is polished, and then the double-flexible skeleton composite bamboo-based springs of the same specification are divided into several stiffness levels from small to large according to the quality difference, and finally the double-flexible skeleton composite bamboo-based spring bodies of different specifications and different stiffness levels are obtained.

[0092] Specifically, in this embodiment, the wire diameter range of the double flexible skeleton composite bamboo-based spring body is divided into 2-3mm, 3-4mm, 4-5mm, 5-6mm; the caliber range of the double flexible skeleton composite bamboo-based spring body is 4-5cm, 5-6cm, 6-7cm, 7-8cm respectively; the free height of the double flexible skeleton composite bamboo-based spring body is 6-28cm; the density range of the double flexible skeleton composite bamboo-based spring body is 0.6-2.0g / cm 3 , the stiffness is between 0.2 and 1.8N / mm.

[0093] Example 3

[0094] like Figures 1 to 8 As shown, a double flexible skeleton composite bamboo-based spring mattress of this embodiment comprises a mattress upper fabric composite layer 31, a comfort layer 32, a spring core layer 33, a base layer 34, a mattress surrounding edge 35 and an upper fabric composite layer 36. The mattress comfort layer 32 is composed of one or a combination of latex, foam sponge, wool, horse hair, camel hair, down, and loofah silk floss; wherein wool, horse hair, and camel hair are processed sheets; down or loofah silk floss is a sheet-like liner, and the liner skin is non-woven fabric or cloth, and the down or loofah silk floss is evenly distributed through quilting; loofah silk floss is formed by breaking the loofah into filaments. The mattress spring core layer 33 is composed of an inner liner cover 331 and a plurality of double-flexible skeleton composite bamboo-based spring units 2 covered on the inner liner cover; each of the double-flexible skeleton composite bamboo-based spring units is an independent bagged structure, including a double-flexible skeleton composite bamboo-based spring body 1 and a non-woven bag 21 covering the double-flexible skeleton composite bamboo-based spring; wherein the double-flexible skeleton composite bamboo-based spring body 1 is prepared by the above-mentioned preparation method.

[0095] Specifically, see Figure 4 and Figure 7 In this embodiment, the upper surface of the mattress comfort layer 32 is covered with an upper composite fabric composite layer 31; the spring core layer 33 of the mattress is a support and adjustment layer; the bottom surface of the support and adjustment layer is provided with a base layer 34, and the upper composite fabric composite layer 31 is covered with a surrounding edge 35 and a lower fabric composite layer 36 on all sides.

[0096] Furthermore, in this embodiment, the upper fabric composite layer 31 and the lower fabric composite layer 36 are respectively sewn from the outside to the inside in sequence of fabric, upright cotton, sponge or latex, and non-woven fabric; the surrounding edge 35 is respectively sewn from the outside to the inside in sequence of fabric, upright cotton, sponge or latex, and non-woven fabric.

[0097] Specifically, in this embodiment, one side or multiple sides of the inner shell cover 331 covering the double flexible skeleton composite bamboo-based spring unit are provided with an opening for installing and removing the double flexible skeleton composite bamboo-based spring unit.

[0098] The double-flexible skeleton composite bamboo-based spring units are arranged in the form of multiple spring module packages; wherein the spring module package specifically includes a non-woven fabric package and multiple double-flexible skeleton composite bamboo-based spring units arranged in a matrix form in the non-woven fabric package; on the spring module package, adjacent double-flexible skeleton composite bamboo-based spring units are separated by a dividing line.

[0099] The spring module package 4 may be rectangular, square or triangular; the dividing line on the spring module package 4 may be a quilting dividing line, a zipper tape dividing line or a hot pressing bonding dividing line.

[0100] Furthermore, in this embodiment, the inner shell 331 is made of non-woven fabric; each spring module package 4 can be connected to each other through the inner shell made of non-woven fabric, and together form a spring bed net. The upper and lower surfaces of the spring bed net are respectively provided with a layer of 400-800g / m 2 Cotton felt or other felt with a certain degree of elasticity as the base layer.

[0101] For further information, see Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 In this embodiment, the double flexible skeleton composite bamboo-based spring body in the double flexible skeleton composite bamboo-based spring unit can be a "double flexible skeleton composite bamboo-based spring (see Figure 1-Figure 3 )”, “Double flexible skeleton composite bamboo base spring spring center spring (see Figure 5 )”, “Double flexible skeleton composite bamboo-based spring with different upper and lower stiffness (see Figure 6 )";

[0102] Correspondingly, the spring module package 4 can also be composed of the above-mentioned independent bagged double flexible skeleton composite bamboo-based spring units in an arrangement and combination manner, see Figure 8 .

[0103] In addition, it should be noted that in this embodiment, the double flexible skeleton composite bamboo-based spring mattress can be unpartitioned or partitioned. When unpartitioned, the mattress spring core layer 33 is composed of double flexible skeleton composite bamboo-based spring units 4 of a single density level and a single specification; when partitioned, it can be three partitions, five partitions, seven partitions or left and right partitions; the partitions are composed of double flexible skeleton composite bamboo-based spring units 4 of different specifications, different shapes, and different density levels according to the support requirements.

[0104] Specifically, in the present embodiment, the three zones of the double-flexible skeleton composite bamboo-based spring mattress generally include the head and back zone, the waist and hip zone, and the leg zone; the five zones generally include the head and neck zone, the back zone, the waist zone, the hip zone, and the leg zone; the seven zones generally include the head and neck zone, the back zone, the waist zone, the hip zone, the thigh zone, the calf zone, and the foot zone; in the double-flexible skeleton composite bamboo-based spring mattress of the present embodiment, the rigidity adjustment of different mattress areas can be achieved by setting double-flexible skeleton composite bamboo-based spring units 4 of different specifications and different density levels.

[0105] Directions:

[0106] (1) According to different weights and sleeping support requirements, select a double flexible skeleton composite bamboo-based spring unit (different specifications and density levels) of appropriate stiffness; directly arrange multiple double flexible skeleton composite bamboo-based spring units 2 in the inner shell cover 331. The spring module package 4 can be a variety of shapes such as rectangle, square, triangle, etc., and a module of a specific shape is formed by arranging and combining a plurality of double flexible skeleton composite bamboo-based spring units, and then wrapped with non-woven fabric and connected with other spring module packages to achieve partial replaceability of the double flexible skeleton composite bamboo-based spring core layer.

[0107] (2) In response to the sleep support needs of people of different body shapes, this study selected double-flexible skeleton composite bamboo-based springs of different specifications and density levels. At the same time, considering the different support needs of different parts of the human body such as the head, waist, buttocks, legs and feet during sleep, double-flexible skeleton composite bamboo-based spring core layer areas with different support performance are designed. These areas use double-flexible skeleton composite bamboo-based springs of different specifications and density levels to meet the support needs of various parts of the body. When different areas are composed of a combination of spring modules in the shape of rectangles, triangles, etc., these modules are wrapped with non-woven fabrics and connected to other spring modules. This design not only allows partial replacement of the spring core layer, but also realizes the functional zoning of the mattress, as well as the customized production and design of the mattress.

[0108] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the invention is defined by the appended claims rather than the above description, and it is intended that all variations that fall within the meaning and scope of the equivalent elements of the claims be included in the invention.

Claims

1. A method for preparing a double flexible skeleton composite bamboo-based spring material, characterized in that: The following steps are involved: S1. Drawing bamboo material to obtain bamboo filaments, winding environmentally friendly wires on the bamboo filaments to obtain a double-flexible skeleton, and performing a water bath softening and shaping treatment on the double-flexible skeleton to obtain a double-flexible skeleton bamboo-based spring; S2. Perform resin coating modification on the double-flexible skeleton bamboo-based spring treated by S1: S2.1, mixing and stirring the resin, curing agent and filler to obtain a modified solution; S2.2, modifying the double-flexible-frame bamboo-based spring by spraying the modified solution on the surface of the double-flexible-frame bamboo-based spring or immersing the double-flexible-frame bamboo-based spring in the modified solution and turning it over; S2.3, placing the modified double-flexible frame bamboo-based spring horizontally on the silicone bracket, and after the modified solution on the surface of the double-flexible frame bamboo-based spring is solidified, a modified double-flexible frame bamboo-based spring is obtained; S3. Polishing the modified double-flexible skeleton bamboo-based spring treated by S2 to obtain a double-flexible skeleton composite bamboo-based spring.

2. The method for preparing a double flexible skeleton composite bamboo-based spring material according to claim 1, characterized in that: The S1 includes: S1.

1. Wrap the environmentally friendly wire around the bamboo wire to obtain a double flexible skeleton; S1.2, treating the obtained dual flexible skeleton in a water bath at 80-100°C for 0.5-2h; S1.3, bend and wrap the double flexible skeleton treated in S1.2 and then continue to bathe in water for 0.5 to 2 hours; S1.4, wrap the double flexible skeleton treated in S1.3 into the coil spring rod core and continue water bathing for 1 to 2 hours; S1.

5. After the water bath is finished, the bamboo wire is fixed on the coil spring rod core to be shaped and dried to obtain a double-flexible skeleton bamboo-based spring.

3. The method for preparing a double flexible skeleton composite bamboo-based spring material according to claim 1, characterized in that: The resin in S2 is epoxy resin, polyurethane resin, acrylic resin, bio-based resin, the filler is a filler, a stabilizer or a nano material, and the filler includes nano silicon dioxide, nano titanium dioxide, and graphene oxide, wherein the mass ratio of resin, curing agent and filler is 20-60:10:1-4.

4. The method for preparing a double flexible skeleton composite bamboo-based spring material according to claim 2, characterized in that: The bamboo thread is 0.5 to 2.5 m long, and has a diameter or side length of 2 to 6 mm; the environmentally friendly line is made of cotton thread, hemp thread, or bamboo fiber thread, and has a diameter of 0.2 to 3 mm.

5. The method for preparing a double flexible skeleton composite bamboo-based spring material according to claim 1, characterized in that: The wire diameter range of the composite bamboo-based spring is 2-3 mm, 3-4 mm, 4-5 mm, 5-6 mm; the diameter range is 4-5 cm, 5-6 cm, 6-7 cm, 7-8 cm; the free height is 6-28 cm; the density range is 0.6-2.0 g / cm 3 , the stiffness range is 0.10~1.80N / mm, and the specific stiffness range is 0.16~0.

90.

6. A double-flexible skeleton composite bamboo-based spring mattress, using the double-flexible skeleton composite bamboo-based spring prepared by the preparation method described in claims 1-5 as the mattress core, characterized in that: It includes the mattress top layer, the mattress support layer and the mattress bottom surround; The core layer of the upper layer of the mattress is made of one or a combination of latex, foam sponge, wool, horse hair, camel hair, down, and loofah silk; The core layer of the mattress support layer is composed of a support layer periphery and a plurality of double-flexible skeleton composite bamboo-based spring units wrapped therein; Each of the double-flexible skeleton composite bamboo-based spring units is an independent bagged structure, and includes a double-flexible skeleton composite bamboo-based spring body and a non-woven bag covering the double-flexible skeleton composite bamboo-based spring body.

7. The double-flexible frame composite bamboo-based spring mattress according to claim 6, characterized in that: One side or multiple consecutive sides of the supporting layer are provided with an opening and closing opening for installing and removing the double-flexible skeleton composite bamboo-based spring unit; the multiple double-flexible skeleton composite bamboo-based spring units are arranged in a matrix arrangement therein, and a dividing line is provided between adjacent double-flexible skeleton composite bamboo-based spring units.

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