Bamboo fiber composite weaving method for environment-friendly bamboo weaving craft product

Abstract

The invention discloses a bamboo fiber composite weaving method for an environment-friendly bamboo weaving craft product. The problems that in the prior art, the bamboo resource utilization rate is low, the environment is polluted, splitting and recycling are difficult, and strength and environment friendliness are difficult to consider at the same time are solved. According to the method, bamboo processing waste and waste bamboo woven products serve as raw materials, bamboo fibers are purified through pretreatment and blended with recycled plant fibers and degradable biological glue to prepare composite fiber filaments, the composite fiber filaments are processed into independent weaving units with mechanical connection structures and split stress points, the independent weaving units are formed through a detachable weaving technology, low-temperature setting is conducted through an aldehyde-free setting agent, and the composite fiber filaments are obtained. And after being discarded, the material can be disassembled and recycled. According to the method, efficient utilization of bamboo resources and closed-loop recycling of materials are achieved, environmental pollution is avoided, product strength and environmental friendliness are both considered, the method is suitable for large-scale mass production, small-batch customization and recycling scenes, environment-friendly and modernized upgrading of a traditional bamboo weaving process is promoted, and practicability and popularization value are remarkable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bamboo weaving process product preparation, in particular to an environmentally friendly bamboo weaving process product bamboo fiber composite weaving method, which is especially suitable for bamboo fiber composite weaving product production with resource recycling characteristics and detachable recycling function, can be widely applied to the processing and manufacturing of bamboo weaving products such as household utensils, decorative ornaments, storage containers, and realizes efficient utilization of bamboo resources and environmental protection upgrading of bamboo weaving process. BACKGROUND

[0002] As an important part of traditional handicraft and modern household products, the core of bamboo weaving process products is to form products with specific structure and function through the weaving processing of bamboo fiber raw materials. Bamboo fiber composite weaving technology is to composite bamboo fiber with other auxiliary materials to improve the mechanical strength, durability and functionality of the product, and meet the use requirements in different scenarios.

[0003] Currently, in the existing bamboo fiber composite weaving technology of bamboo weaving process products, raw materials mostly rely on virgin bamboo fiber processed from newly harvested bamboo, and only a small amount of chemical synthetic fibers (such as polyester, nylon, etc.) are added to enhance strength; composite forming process generally uses non-degradable chemical adhesives such as epoxy resin and polyurethane to realize the adhesion between fibers through coating or soaking; the weaving process mainly uses warp and weft interlacing, winding weaving or whole weaving to form an integral structure that cannot be disassembled; the finished product shaping mostly uses shaping agents containing formaldehyde or other volatile organic compounds, and high temperature (80-100℃) curing treatment is used to ensure the shape stability. However, such existing technology has the following significant deficiencies: first, the raw material relies on virgin bamboo, and the recycling rate of bamboo shavings, bamboo silk waste and waste bamboo weaving products generated in the bamboo processing process is less than 5%, resulting in a large amount of waste of bamboo resources, and the addition of chemical synthetic fibers reduces the biodegradability and environmental protection properties of the product; second, the use of non-degradable chemical adhesives and aldehyde-containing shaping agents will release harmful gases during production, and will cause secondary pollution of soil and environment after being discarded; third, the integral forming of the weaving structure and the strong adhesion of the adhesive make the product unable to be disassembled after damage, and the bamboo fiber and other components are difficult to separate, which can only be incinerated or landfilled as garbage, and cannot realize material recycling; fourth, in the traditional composite process, there is a conflict between fiber strength improvement and environmental protection and recyclability. If the proportion of chemical fibers is increased to improve the strength, the environmental protection and recyclability will be further reduced. If only natural bamboo fiber is used, the product is prone to breakage and deformation, and cannot meet the long-term use requirements, which cannot adapt to the current green and environmental protection and resource recycling industry development trend. SUMMARY

[0004] The present application aims to solve the four core problems existing in the bamboo fiber composite weaving technology of the existing bamboo weaving handicraft: first, the utilization rate of bamboo resources is low, the recycling of bamboo processing waste and waste bamboo weaving products is insufficient, and the dependence on primary bamboo materials leads to resource waste; second, environmental pollution exists in the production and use process, non-degradable chemical adhesives and formaldehyde-containing setting agents release harmful substances and pollute the environment; third, the products are difficult to disassemble and recycle, the integrated structure and strong bonding components lead to the inability to separate and recycle the materials after being discarded, causing secondary resource waste; fourth, the strength of the fiber, environmental protection and recyclability are difficult to balance, and the traditional composite method cannot ensure the strength while realizing environmental protection and recyclability.

[0005] To solve the above problems, the present application provides a kind of bamboo fiber composite weaving method of environment-friendly bamboo weaving process product, specific steps are as follows: 1) bamboo fiber raw material pretreatment: select bamboo processing waste and recycled bamboo products as initial raw material, first remove impurities (such as metal, plastic, etc.) by artificial or mechanical sorting, then crush to bamboo fiber coarse material with particle size of 2-5mm by crushing equipment;Bamboo fiber coarse material is steamed at 105-115 DEG C for 1.5-2.5 hours to soften the fiber and remove part of lignin, then put into cellulase liquid with concentration of 0.8-1.2%, enzymolysis for 30-60 minutes at 45-55 DEG C, further purify bamboo fiber, after enzymolysis, repeatedly washed with water to neutral, finally dried in low temperature environment not more than 60 DEG C, control the moisture content of bamboo fiber after drying is 8-12%, obtain high purity bamboo fiber;2) composite fiber preparation: according to the quality ratio of 55-65% purified bamboo fiber, 25-35% recycled plant fiber (recycled cotton fiber or hemp fiber), 5-10% biodegradable biological glue (polylactic acid based biological glue) are mixed, 2-5% bamboo charcoal powder (premix uniformly before melt blending) with particle size of 1000-1500 purposes can be added according to demand;The mixed raw material is put into double screw extruder, melt blending at 130-145 DEG C temperature, fiber yarn with line diameter of 0.3-0.8mm is formed by extruding die, then cooled and shaped by air cooling (air speed 2-3m / s) and water cooling (water temperature 20-25 DEG C) combination, break strength ≥3.5cN / dtex detachable composite fiber yarn; 3) woven unit forming: the composite fiber yarn is processed into hollow cylindrical or flat sheet-shaped independent woven units with a length of 2-8 cm by a weaving machine, a mechanical connection structure of a buckle type protrusion matched with a slot is processed at the end of the woven unit, an anti-skid groove is opened on the surface of the unit as a detachment stress point, and a degradable lubricating film (chitosan and glycerol composite film) with a thickness of 5-10 μm can be coated on the outer surface of the mechanical connection structure to improve the connection and detachment convenience; 4) detachable weaving process: the composite fiber yarn is used as warp and weft threads for basic interweaving to form a grid-shaped base with a grid aperture of 1-3 cm; the woven unit is fixed at the node of the base grid through the buckle type structure, and adjacent woven units are embedded with each other through the slot to form a three-dimensional or planar woven structure, and the whole weaving process does not use any permanent adhesive, and is fixed only by mechanical connection, and a bamboo weaving blank is prepared; 5) environmentally friendly shaping treatment: a modified starch-based formaldehyde-free water-based setting agent is used to spray the bamboo weaving blank, the spraying amount is controlled to be 100-150 ml per square meter of bamboo weaving blank, and then the bamboo weaving blank is placed in a drying equipment at 65-75°C for drying for 90-120 minutes, and the finished bamboo weaving product is obtained after shaping; 6) recycling and adapting treatment: when the product needs to be recycled, force is applied along the detachment stress point on the surface of the woven unit by hand or mechanical tools to separate the woven units along the mechanical connection structure, and the separated woven units are crushed by a crushing equipment and then separated by hot air (temperature 50-60°C), wherein the bamboo fiber component reenters the pretreatment process of step 1) for recycling, the degradable biological glue component is converted into an organic fertilizer raw material after high-temperature degradation treatment at 180-200°C, and the recycled plant fibers can be recombined or degraded for use according to the purity.

[0006] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages compared with the prior art:

[0007] 1) Significantly improve the utilization rate of bamboo resources, by using bamboo processing waste and waste bamboo products as raw materials, and by matching recycled plant fibers, the comprehensive utilization rate of bamboo-related resources is improved to more than 85%, reducing the cutting of raw bamboo and resource waste;

[0008] 2) Achieve full-process environmental protection without pollution, use degradable biological glue and formaldehyde-free water-based setting agent during production, no harmful gas is released, and the waste materials can be degraded or recycled, avoiding secondary environmental pollution;

[0009] 3) High-efficiency detachment and recycling capability, through the design of mechanical connection structure and detachment stress point of independent woven unit, the finished product can be quickly detached after damage, the bamboo fiber component can be repeatedly entered into the production process, and the material recycling rate is more than 70%;

[0010] 4) Balancing product strength and environmental friendliness, the composite fiber, through reasonable proportioning and melt blending process, has a breaking strength ≥3.5cN / dtex, meeting the needs of daily use, while maintaining the environmental attributes of the entire process, resolving the contradiction between strength and environmental protection and recyclability in traditional processes;

[0011] 5) Promote the modernization and upgrading of traditional bamboo weaving techniques. While preserving the natural texture and cultural attributes of bamboo woven products, improve the practicality, environmental friendliness and economy of products through technological innovation, and expand the application scenarios and market space of bamboo woven products.

[0012] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0013] Figure 1 This is a flowchart illustrating the overall process of bamboo fiber composite weaving in this invention.

[0014] Figure 2 This is a timeline diagram of the preparation of the composite fiber of the present invention;

[0015] Figure 3 This is a schematic diagram of the detachable braided structure of the present invention;

[0016] Figure 4 This is a flowchart illustrating the resource recycling process of this invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] likeFigures 1-4 As shown, the purified bamboo fiber, recycled plant fiber, and degradable biological glue (containing optional bamboo charcoal powder) are mixed according to a predetermined mass ratio to form a mixed raw material. The mixed raw material enters the machine through the feed port of the double-screw extruder, is melt-blended, and is then extruded through the pore channel of the extrusion die. The composite fiber yarn is sequentially cooled and shaped in the cooling area of the air cooling device and the water cooling device. One end of the composite fiber yarn is connected to the thread feeding mechanism of the braiding machine. The braiding machine processes the independent braiding unit with a buckle type protrusion and a slot (optionally coated with a degradable lubricating film) at the end and a surface anti-slip groove. The buckle type protrusion and the slot of the braiding unit form a matching mechanical connection structure. The anti-slip groove is located in the middle or end region of the outer surface of the braiding unit. The composite fiber yarn serves as the warp and weft threads at the same time. The interlacing forms a grid-shaped base. The buckle type protrusion of the braiding unit is embedded in the node of the base grid. The slot and the buckle type protrusion of adjacent braiding units are embedded in each other, so as to form a detachable fixed connection between the braiding unit and the base and between the braiding units, which together constitute a bamboo braiding blank. The bamboo braiding blank is placed on the rack of the drying equipment. The formaldehyde-free aqueous setting agent is sprayed on the surface of the bamboo braiding blank through the nozzle of the spraying device. The nozzle is located above or beside the bamboo braiding blank, and the spraying direction is towards the surface of the blank. In the recycling stage, the separated braiding unit is crushed in the crushing cavity of the crushing equipment. The crushed product enters the separation cavity of the hot air separation device. The bamboo fiber component and other components are separated in the separation cavity. The bamboo fiber component is directed to the feed end of the raw material pretreatment, and the degradable biological glue component is introduced into the reaction cavity of the high-temperature degradation device.

[0021] In this embodiment, the bamboo fiber raw material pretreatment link: using bamboo processing waste and waste bamboo products as raw materials directly solves the problem of relying on raw bamboo in the prior art. Impurities and lignin are removed through sorting, crushing, steam cooking, and biological enzyme hydrolysis process to improve the purity of bamboo fiber, which not only ensures the strength of the subsequent composite fiber, but also provides convenience for fiber separation in the recycling stage, increases the utilization rate of bamboo resources from the existing 5% to more than 85%, and reduces resource waste;

[0022] The composite fiber preparation link: a composite system of purified bamboo fiber + recycled plant fiber + degradable biological glue is used to replace the chemical synthetic fiber and non-degradable adhesive in the prior art, which reduces environmental pollution from the source. The melt blending process makes the fibers tightly combined, and the breaking strength is improved to ≥3.5 cN / dtex, solving the problem of insufficient strength of traditional natural bamboo fiber products. The optional addition of bamboo charcoal powder further expands the product functionality. The choice of degradable biological glue provides the possibility for subsequent high-temperature degradation and recycling;

[0023] The weaving unit forming link: the composite fiber yarn is processed into an independent unit with a mechanical connection structure and a disassembly stress point, which provides a structural basis for detachable weaving and recycling and disassembly, the mechanical connection structure replaces the adhesive to realize fixation, the disassembly stress point reduces the difficulty of separation, solves the pain point that the existing integral forming structure cannot be disassembled, and the addition of a degradable lubricating film further improves the connection stability and disassembly convenience, realizes the dual needs of "firm connection-easy disassembly", and the addition of a degradable lubricating film further improves the connection stability and disassembly convenience, realizes the dual needs of "firm connection-easy disassembly";

[0024] The detachable weaving process link: the combination of "weft and warp interlacing base + weaving unit splicing" is adopted, without using any permanent adhesive, which not only ensures the stability of the finished product structure, but also enables the finished product to be disassembled according to the unit after damage, solves the technical bottleneck of "cannot be disassembled after forming" in the existing weaving process, and the standardized design of the weaving unit can realize the unit commonality among different products, improving production flexibility and resource reuse rate;

[0025] The environmental protection shaping treatment link: a modified starch-based formaldehyde-free water-based shaping agent and a low-temperature drying process are used to replace the existing formaldehyde-containing shaping agent and high-temperature curing, avoiding the release of harmful gases in the production process, and the shaping agent can be degraded with the recycling process, without environmental residues, solving the environmental pollution problem of the existing technology, and at the same time, low-temperature drying protects the structural integrity of bamboo fibers and composite components, and reserves conditions for recycling and reuse;

[0026] The recycling adaptation treatment link: the weaving unit can be separated along the disassembly stress point by hand or simple machinery, and the bamboo fibers and other components can be efficiently separated through crushing and hot air separation, the bamboo fibers can be recycled into the pretreatment link, the degradable biological glue can be degraded into organic fertilizer raw materials, forming a closed-loop recycling system, solving the problem that existing bamboo products can only be incinerated and landfilled after being discarded, making the material recycling rate reach more than 70%, realizing the dual goals of resource regeneration and environmental friendliness.

[0027] Based on the above implementation scheme, in the specific implementation process, adjustments need to be made according to different implementation requirements, as follows:

[0028] I. Large-scale production situation (adapt to the upgrading and reconstruction of existing bamboo weaving production line)

[0029] (I) The use state of each structure

[0030] Raw material pretreatment stage: bamboo processing waste (cutting waste from existing bamboo processing plants, bamboo chips) and recycled waste bamboo products (remove metal and plastic impurities through existing waste recycling sorting line) are stored as initial raw materials in the existing raw material warehouse. The existing screw conveyor is used to quantitatively transport the raw materials to the feed inlet of the existing crushing equipment. The bamboo fiber coarse material formed after crushing is introduced into the existing steam cooking tank through the existing bucket elevator. After cooking, it is transported to the existing enzymatic reaction tank through the pipeline. The enzyme-washed fibers are dried by the existing mesh belt dryer (adjust the drying temperature to ≤60℃), and the purified bamboo fibers are obtained and temporarily stored in the raw material buffer warehouse.

[0031] Composite fiber preparation stage: The purified bamboo fibers, recycled plant fibers (recycled cotton / ramie waste from existing textile plants processed by carding), and biodegradable glue (existing biogel storage tank) are mixed in a predetermined ratio by the existing weighing and batching system, then fed into the existing double-screw extruder through the feed inlet. After melting and blending (temperature adjustment to 130-145℃, adapting to the existing extruder temperature control system), the fiber filaments are extruded through a custom-adapted extrusion die (pore size 0.3-0.8mm, detachable connection with the existing extruder die flange). The fiber filaments are cooled by the existing air cooling unit (air speed 2-3m / s) and the existing water cooling tank (water temperature 20-25℃) in sequence. The cooled composite fiber filaments are drawn by the existing godet roller group to the fiber winding machine (existing equipment) and wound into a silk roll for standby use.

[0032] Weaving unit forming stage: The composite fiber silk roll is fixed by the existing weaving machine's thread feeding mechanism. The weaving machine is programmed to adjust (adapt to the size of the weaving unit of the invention) to process the fiber silk into independent weaving units with buckle type protrusions, slots, and anti-slip grooves. If a biodegradable lubricating film is needed, an existing film coating device (nozzle aimed at the outer surface of the weaving unit connection structure, coating thickness 5-10μm) is added at the discharge end of the weaving machine. After coating, it is cured by the existing low-temperature air dryer (temperature 40℃). The formed weaving units are sorted by the existing vibrating screen separator and temporarily stored in the magazine.

[0033] Detachable weaving stage: The composite fiber silk roll is simultaneously connected to the existing warp and weft weaving machine. The preset grid aperture (1-3cm) is interwoven to form a grid-shaped base (the existing weaving machine adjusts the warp feeding speed and weft frequency to adapt). The base is transported to the existing splicing workbench (additional positioning clamps) by the existing conveyor belt. The weaving units are manually or mechanically grabbed and inserted into the base grid nodes through the buckle type protrusions. Adjacent weaving units are embedded in each other through the slots to form a bamboo weaving blank. The blank is transferred to the shaping process by the existing conveying line.

[0034] Environment-friendly shaping stage: the existing high-pressure spraying device (the nozzle spacing is adjusted to 30 cm and is installed above the conveying line) sprays the modified starch-based formaldehyde-free shaping agent (stored in the existing shaping agent storage tank and connected to the spraying device through a pipeline) on the surface of the blank at a rate of 100-150 ml / m2, and the blank directly enters the existing tunnel-type drying furnace (the temperature control is adjusted to 65-75 DEG C, the drying time is 90-120 minutes, and the existing furnace body conveying speed is matched) after spraying, and the finished product is obtained after cooling in the existing cooling section, and is packed into the warehouse through the existing packaging line.

[0035] Recycling linkage stage: the woven unit waste and blank corner material generated during production are collected through the existing waste collection hopper and directly sent to the existing small-scale crushing equipment. After crushing, the bamboo fiber component is transported to the raw material pretreatment steam cooking tank through the existing pipeline to realize the immediate recycling of production waste.

[0036] (II) Linkage details with existing technology / device

[0037] Without replacing the existing core production equipment (crushing, extrusion, weaving, drying, etc.), only by adjusting the equipment parameters (temperature, aperture, weaving program), adding customized accessories (extrusion die, coating nozzle, splicing positioning clamp), the upgrading can be realized, and the transformation cost is low and the compatibility is strong.

[0038] The raw material supply end is directly connected with the waste recycling channel of the existing bamboo processing plant and textile mill, and the finished product output end can be connected with the existing bamboo product packaging and storage system, forming a closed-loop linkage of "existing raw material supply chain-invention process-existing finished product circulation chain", without changing the existing production organization mode.

[0039] Two, small-batch customized production situation (adapt to traditional handwork + small equipment combination)

[0040] (I) The use state of each structure

[0041] Raw material pretreatment stage: small-batch bamboo processing waste (such as handwork cutting leftovers) and recycled waste bamboo products (locally recycled) are sorted by hand to remove impurities, crushed by a small household crusher (aperture adjusted to 2-5 mm), and the coarse material is placed in a small existing steam pot (temperature 105-115 DEG C, heat preservation 1.5-2.5 hours) for cooking, manually transferred to an existing plastic enzyme hydrolysis tank (loaded with cellulase liquid) for enzyme hydrolysis, and then washed with clean water, laid flat on an existing low-temperature drying machine (temperature ≤60 DEG C) for drying, and purified bamboo fiber is obtained.

[0042] Composite fiber preparation stage: manually mix purified bamboo fiber, recycled plant fiber, and degradable biological glue (optional bamboo charcoal powder) according to the mass ratio, feed through the existing small-scale double-screw extruder (laboratory grade or workshop special edition), control the melt blending temperature at 130-140°C, extrude through the customized small-diameter die (pore diameter 0.3-0.5mm), cool the fiber filament through the existing small-scale air cooler and water tank, manually pull and roll into small rolls of fiber filament.

[0043] Braiding unit forming stage: connect the fiber filament to the existing small-scale braiding machine (such as a hand-assisted braiding machine), process flat sheet or hollow cylindrical braiding units according to the customized size (2-5cm), manually press the buckle type protrusions and slots at the end of the unit using a mold, use tools to engrave anti-slip grooves on the surface, and if a lubricating film is needed, manually apply a chitosan-glycerol composite film and let it air dry.

[0044] Detachable braiding stage: manually interweave the composite fiber filament to form a base (grid aperture 1-2cm), embed the braiding units into the base nodes according to the design pattern, and fix the adjacent unit slots, manually adjust the unit position to ensure a tight structure, and form a customized bamboo weaving blank (such as a special-shaped decorative piece or a small storage box).

[0045] Environmentally friendly shaping stage: use the existing manual spray bottle (adapted to formaldehyde-free shaping agent) to spray the blank according to the preset amount, put it into the existing small-scale drying oven (temperature 65-70°C, drying time 120 minutes), manually trim the corners after cooling, and complete the customized finished product.

[0046] Recycling linkage stage: manually crush the unqualified braiding units and waste generated during customization, further refine them through the existing household grinder, and manually feed them into the small-scale hot air separation device (existing workshop waste treatment equipment) to separate the bamboo fiber, which is then collected and reused for small-batch production.

[0047] (II) Linkage details with existing technology / devices

[0048] Fully compatible with existing small-scale processing equipment in manual workshops, no need to add large-scale devices, only need to supplement customized molds (extrusion molds, braiding unit buckle molds) and small auxiliary tools (coating brushes, separation screens), and reduce the technical upgrading threshold of small workshops.

[0049] Manual operation alternately linked with existing small-scale equipment, such as manually preparing the ingredients and then feeding them into the small-scale extruder, manually braiding the base and then pressing the braiding unit with a machine, which not only retains the customization flexibility of traditional bamboo weaving, but also improves the environmental protection and recyclability of the product through the structural design of the invention, solving the problem of waste utilization and product recycling in traditional manual workshops.

[0050] III. Recycling of waste bamboo weaving products (adapted to existing waste resource processing line)

[0051] (I) Each structure usage state

[0052] Recycling sorting stage: waste bamboo products (from household waste, market returns, production waste) are removed from non-timber impurities (metal, plastic, cloth) by existing waste recycling sorting lines (manual + mechanical sorting). The sorted waste products are transported to the disassembly station by the existing conveyor belt. Workers apply force along the anti-slip grooves on the surface of the woven unit to separate the buckle type protrusions from the slot. The separated independent woven units are screened by the existing vibrating screen (to remove severely damaged units that cannot be recycled), and the collected woven units are collected.

[0053] Pulverization and separation stage: qualified woven units are pulverized to a particle size of 5-10 mm by existing small-scale pulverizing equipment (protective net added to the feed inlet to avoid excessive pulverization). The pulverized products are fed into the existing hot air separation device (temperature adjusted to 50-60°C) by the existing screw conveyor. In the separation chamber, the bamboo fiber components, recycled plant fibers, and degradable biological glue are separated. The separated bamboo fiber components are discharged through the pipeline, and the mixture of degradable biological glue and a small amount of impurities is collected separately.

[0054] Recycling stage: the separated bamboo fiber components are directly connected to the existing bamboo fiber pretreatment production line (compatible with the raw material pretreatment process of the present invention). After steam cooking, enzymatic hydrolysis, washing, and drying, purified bamboo fiber is obtained again for the preparation of new composite fibers. The degradable biological glue mixture is treated by the existing high-temperature degradation furnace (temperature 180-200°C). The degradation products are processed into organic fertilizer by the existing organic fertilizer processing equipment (pulverization, granulation). If the purity of the recycled plant fibers is ≥80%, they are mixed with new composite fiber raw materials for recycling. If the purity is insufficient, they are degraded together with the biological glue.

[0055] (II) Linkage details with existing technology / devices

[0056] Directly interface with existing waste recycling sorting lines and waste material resource utilization equipment. No need to build a dedicated recycling line. The disassembled woven units can be connected to the pulverizing and separating devices through existing conveyor belts, screw conveyors, and other conveying equipment. The conveying speed is matched with the existing equipment (such as adjusting the conveyor belt speed to 0.5 m / s to adapt to the manual disassembly efficiency).

[0057] Existing equipment such as hot air separation devices and high-temperature degradation furnaces only need to adjust the process parameters (such as hot air temperature and degradation temperature) to adapt to the recycled materials of the present invention. The separated bamboo fibers can be directly introduced into the existing bamboo fiber pretreatment production line to realize the closed-loop linkage of "waste products-disassembly-pulverization-separation-regenerated raw materials-new products". This solves the problem of existing waste treatment lines that cannot separate bamboo weaving composite components and can only be incinerated and landfilled, and improves the utilization rate of waste resources.

[0058] Although the present application has been disclosed in its preferred embodiments with reference to the accompanying drawings, it is not intended to limit the present application thereto, and various modifications and alterations can be made thereto by those skilled in the art without departing from the spirit and scope of the present application, and the scope of protection of the present application should be defined by the appended claims.

Claims

1. A bamboo fiber composite weaving method for an environmentally friendly bamboo weaving process product, characterized in that, The method comprises the following steps: Bamboo fiber raw material pretreatment: select bamboo processing waste and recycled bamboo products, after sorting and crushing, obtain bamboo fiber raw material, and then sequentially perform steam cooking, biological enzymolysis, cleaning and low-temperature drying treatment on the bamboo fiber raw material to obtain purified bamboo fiber; Composite fiber preparation: mix the purified bamboo fiber, recycled plant fiber and degradable biological glue according to a preset ratio, and perform melt blending, extrusion drawing and cooling and shaping to obtain a detachable composite fiber yarn; Weaving unit forming: process the composite fiber yarn into a plurality of independent weaving units, the end of the weaving unit is provided with a matching mechanical connection structure, and a splitting stress point is reserved on the surface of the unit; Detachable weaving process: adopt a method of combining unit splicing through warp and weft interlacing, realize mutual fixation through the mechanical connection structure of the weaving unit, form a bamboo weaving blank body with a preset shape, and the weaving process does not use permanent adhesive; Environment-friendly shaping treatment: spray a formaldehyde-free water-based setting agent on the bamboo weaving blank body, and obtain a bamboo weaving finished product after low-temperature drying; Recycling and adaptive design: the weaving unit of the finished product can be separated along the mechanical connection structure under the action of external force, the separated composite fiber yarn can be re-melted to prepare new composite fiber, and the bamboo fiber component can be recycled after secondary purification.

2. The bamboo fiber composite weaving method of claim 1, wherein, In step 1), the steam cooking temperature is 105-115 DEG C, the holding time is 1.5-2.5 hours; the biological enzymolysis adopts a cellulase liquid with a concentration of 0.8-1.2%, and the reaction is carried out at 45-55 DEG C for 30-60 minutes; the low-temperature drying temperature is not more than 60 DEG C, and the moisture content of the bamboo fiber after drying is controlled to be 8-12%.

3. The bamboo fiber composite weaving method of claim 1, wherein, In step 2), the mass ratio of the raw materials of the composite fiber is: purified bamboo fiber 55-65%, recycled plant fiber 25-35%, and degradable biological glue 5-10%; the recycled plant fiber is recycled cotton fiber or hemp fiber, and the degradable biological glue is polylactic acid-based biological glue.

4. The bamboo fiber composite weaving method of claim 1, wherein, In step 2), the melt blending temperature is 130-145 DEG C, the diameter of the extrusion drawing is controlled to be 0.3-0.8 mm, the cooling and shaping adopts a combination of air cooling and water cooling, and the breaking strength of the fiber yarn after cooling is greater than or equal to 3.5 cN / dtex.

5. The bamboo fiber composite weaving method of claim 1, wherein, In step 3), the weaving unit is a hollow cylindrical or flat sheet, the length is 2-8 cm, the mechanical connection structure at the end is a combination of a buckle type protrusion and a slot, and the splitting stress point is an anti-skid groove arranged on the surface of the unit.

6. The bamboo fiber composite weaving method of claim 1, wherein, In step 4), the detachable weaving process is specifically: interweave the composite fiber yarn as warp and weft to form a grid-shaped base; fix the weaving unit at the node of the base grid through the buckle type structure, and embed the adjacent weaving units through the slots to form a three-dimensional weaving structure.

7. The bamboo fiber composite weaving method of claim 1, wherein, In step 5), the formaldehyde-free water-based setting agent is a modified starch-based setting agent, the spraying amount is 100-150 ml per square meter of bamboo weaving blank body, the low-temperature drying temperature is 65-75 DEG C, and the drying time is 90-120 minutes.

8. The bamboo fiber composite weaving process of claim 1, wherein, In step 6), during the recycling process, the braided units are separated along the stress points by manual or mechanical tools, and then crushed and separated by hot air; the bamboo fiber components are recycled by the pretreatment process in step 1), and the degradable biological glue components are degraded at high temperature and used as organic fertilizer raw materials.

9. The bamboo fiber composite weaving method of claim 3, wherein, The composite fiber raw material further comprises 2-5% of bamboo charcoal powder, the particle size of the bamboo charcoal powder is 1000-1500 mesh, and the bamboo charcoal powder is uniformly premixed with other raw materials before melt blending.

10. The bamboo fiber composite weaving method of claim 5, wherein, The outer surface of the mechanical connection structure of the braided unit is coated with a degradable lubricating film, and the lubricating film is a composite film of chitosan and glycerol, with a thickness of 5-10 μm.

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