Veneer modified by bioactive components based on water sweater technology and production process of veneer

Abstract

The invention provides a wood veneer modified by bioactive components based on a water sweater technology and a production process of the wood veneer. The production process comprises the following steps: preparing a water sweater material loaded with plant active components, a mildew-proof plain board and multifunctional impregnated paper; and covering the multifunctional impregnated paper on the surface of the mildew-proof plain board, and carrying out hot-pressing lamination to obtain the plant active veneer artificial board. According to the wood veneer modified by the bioactive components based on the water sweater technology, the slow release performance, the effective component utilization rate and the function durability of a water sweater material are improved, and the problems that active components are uneven in dispersion, prone to decomposition and volatilization at high temperature and high pressure and not firm in combination with wood or resin are solved; and the damage of a conventional single-stage hot pressing process to the fragrant water sweater material is also solved, and the realization of functions such as long-acting fragrance release is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of veneer manufacturing, in particular to a veneer modified by biological active ingredients based on water-coat technology and a production process thereof. BACKGROUND

[0002] Water-coat is a micro-encapsulation structure formed by specific technology, which has hydrophilic properties. It can stably disperse in aqueous environment and can encapsulate, protect and controllably release functional ingredients inside. The structure is usually constructed by hydrophilic polymer materials, which has affinity for water and barrier and slow-release function for internal substances. The production process of veneer modified by biological active ingredients based on water-coat technology is to effectively encapsulate biological active ingredients by using the characteristics of water-coat structure, and then apply them to the preparation of veneer through specific process steps.

[0003] In the existing production process, the wall material of some water-coat materials is prone to breakage during preparation and subsequent use, causing the active ingredients to be released too early or too quickly, and unable to achieve long-acting slow-release effect. The insufficient bonding strength between biological active ingredients and wood or resin base material is also one of the problems faced by the existing production process. Due to the limited affinity between active ingredients and base material, the active ingredients are prone to fall off from the base material during long-term use, especially when subjected to external force or environmental factors, resulting in gradual weakening or even loss of the function of the veneer. For example, some active ingredients with mildew-proof and antibacterial functions may fall off from the surface of the board after a period of use, greatly reducing the mildew-proof and antibacterial effect. Based on this, the present application provides a veneer modified by biological active ingredients based on water-coat technology and a production process thereof. SUMMARY

[0004] The purpose of the present application is to provide a veneer modified by biological active ingredients based on water-coat technology and a production process thereof, which improves the slow-release performance of water-coat materials, the utilization rate of active ingredients and the durability of functions, and solves the problems of uneven distribution of active ingredients, easy decomposition and volatilization under high temperature and pressure, and poor combination with wood or resin. It also solves the damage of conventional single-stage hot pressing process to aroma water-coat materials and ensures the realization of long-acting aroma function.

[0005] In one aspect, the present application provides a production process of a veneer modified by biological active ingredients based on water-coat technology, comprising the following steps: S1. Preparing water-coat materials loaded with plant active ingredients: using a complex coacervation method, biological macromolecules are used as wall materials to prepare water-coat materials loaded with different plant active ingredients; S2. Preparation of mildew-resistant raw board: The first water-based protective material is dispersed in an adhesive for engineered wood products to obtain a mildew-resistant adhesive; the wood raw material is mixed with the mildew-resistant adhesive, laid out, and hot-pressed to obtain a mildew-resistant raw board; S3. Preparation of multifunctional impregnated paper: The second water-based sweatshirt material is dispersed in melamine impregnation resin to obtain a functional impregnation solution; the decorative base paper is impregnated with the functional impregnation solution and dried to obtain multifunctional impregnated paper; S4. Surface lamination: The multifunctional impregnated paper is applied to the surface of the mildew-resistant board and then hot-pressed to obtain the plant-active decorative artificial board.

[0006] Furthermore, in step S1, the composite coagulation method uses gelatin and gum arabic as wall materials, and forms a water-based protective clothing material wall by adjusting the pH on the surface of oil phase droplets, and then cross-links and cures it with glutaraldehyde.

[0007] Furthermore, in step S1, the mugwort essential oil inclusion complex and the cedar essential oil inclusion complex are both solid powders obtained by respectively incorporating mugwort essential oil and cedar essential oil with β-cyclodextrin through a saturated aqueous solution method and then drying them.

[0008] Furthermore, in step S1, the process of further coating the second water-resistant fabric material with a gel layer involves the following steps: dispersing the primary water-resistant fabric material prepared by the composite coagulation method in a chitosan acetate solution, adding citric acid as a crosslinking agent to react, and constructing a chitosan-based gel layer on the surface of the water-resistant fabric material.

[0009] Furthermore, in step S2, the core material of the first water-based sweatshirt material includes cedarwood essential oil inclusion complex and hesperidin.

[0010] Furthermore, in step S3, the core material of the second water-based sweatshirt material includes rosemary extract, artemisia extract, and artemisia essential oil inclusion complex.

[0011] Furthermore, in steps S2 and S3, the amount of the water-based sweatshirt material added accounts for 1%-15% of the solid mass of the adhesive and the solid mass of the impregnation resin, respectively.

[0012] Furthermore, in step S4, the hot pressing bonding adopts a multi-stage heating and pressure holding process, including: the first stage, holding pressure at 140-160℃ and 6-10MPa for 20-40 seconds; the second stage, heating to 190-200℃ and holding pressure at 8-12MPa for 40-60 seconds; and the third stage, depressurizing and cooling until the board surface temperature is below 80℃ before removing the board.

[0013] On the other hand, the present invention also provides a decorative panel modified with bioactive ingredients based on water-based fabric technology, which is produced using the aforementioned production process.

[0014] On the other hand, the present invention also provides an application of a decorative panel modified with bioactive ingredients based on water-based fabric technology in the preparation of furniture and interior decorative panels.

[0015] The beneficial effects of this invention are as follows: This invention employs a composite coagulation method, using gelatin and gum arabic as wall materials to prepare water-resistant fabric coatings. These two materials synergistically construct a tightly structured, highly encapsulated membrane, effectively protecting the internal active ingredients. Simultaneously, artemisia oil, cedar oil, and β-cyclodextrin are combined to form essential oil inclusion complexes, which are then used in the preparation of the water-resistant fabric coating material. The β-cyclodextrin inclusion technology transforms liquid essential oils into stable solids, reducing volatilization and thermal decomposition losses during the preparation of the water-resistant fabric coating material and the hot pressing of the sheet, allowing for more effective loading of the essential oils—a prerequisite for achieving long-lasting sustained-release functionality.

[0016] This invention prepares two types of water-based protective clothing materials. The first material uses an oil phase containing cedarwood essential oil inclusion complexes and hesperidin as its core. The second material uses an oil phase containing rosemary extract, artemisia extract, and artemisia essential oil inclusion complexes as its core, and is further coated with a gel layer formed by chitosan / citric acid crosslinking. The outer gel layer formed by chitosan and citric acid crosslinking synergistically enhances the sustained-release performance of the water-based protective clothing material with the inner primary water-based protective clothing material using gelatin-gum arabic as the wall material. Without the chitosan gel layer, the wall material of the water-based protective clothing material is more prone to damage during subsequent hot pressing and use, resulting in premature and rapid release of active ingredients, weakening its long-lasting antibacterial, antifungal, and fragrance release properties.

[0017] In the preparation of the anti-mildew board, the cedarwood essential oil inclusion complex in the first water-coating material of this invention works synergistically with hesperidin to achieve highly efficient anti-mildew, while the effect of using hesperidin alone is not good. The anti-mildew function is mainly undertaken by the first water-coating material of the board layer, the antibacterial function is jointly undertaken by the first water-coating material and the second water-coating material, and the aroma function depends on the artemisia essential oil inclusion complex in the second water-coating material of the impregnation layer. The different functional layers work together to construct a multifunctional decorative panel.

[0018] This invention first prepares the active ingredients into a water-based coating material, then disperses the first water-based coating material in an adhesive for engineered wood products to prepare an anti-mildew board, and disperses the second water-based coating material in melamine impregnating resin to prepare a multifunctional impregnated paper, finally applying the finishing layer. Compared to directly adding powder to the anti-mildew components or active components in the impregnating layer, using water-based coating technology for pre-coating and protection solves problems such as uneven dispersion, easy decomposition and volatilization during high-temperature and high-pressure hot pressing, and weak bonding with wood or resin. This improves the utilization rate of the effective ingredients and the durability of the function, demonstrating the synergistic advantages of water-based coating technology and board preparation process.

[0019] This invention employs a multi-stage heating and pressing process for surface lamination. This process is compatible with the heat-sensitive hydrogel material in the impregnated paper, especially the artemisia essential oil component in the second hydrogel material. Conventional single-stage hot pressing processes, where pressure is released directly after high-temperature pressing, cause residual heat inside the board to continue acting on the fragrance hydrogel material, potentially damaging its wall structure or accelerating core material volatilization, thus impairing its long-lasting fragrance release function. The multi-stage lamination process, especially the cooling stage, is crucial for protecting the hydrogel material and ensuring its long-lasting fragrance release function, demonstrating the synergy between the hot pressing process and the characteristics and functions of the hydrogel material. Detailed Implementation

[0020] The technical solution of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, 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.

[0021] It should also be noted that the Artemisia argyi essential oil was purchased from Ji'an Huatianbao Traditional Chinese Medicine Biological Products Factory; the Chinese fir essential oil was purchased from Shenzhen Dingcheng Plant Fragrance Co., Ltd.; the rosemary extract was purchased from Shaanxi Xintianyu Biotechnology Co., Ltd.; the Artemisia argyi leaf extract (80-120 mesh) was purchased from Lanzhou Waterles Biotechnology Co., Ltd.; the melamine resin was purchased from Xinxiang Xinli Industrial Co., Ltd.; and the polycarboxylate high-efficiency dispersant was model BYK-191.

[0022] Example 1 This embodiment provides a production process for decorative panels modified with bioactive ingredients based on water-resistant fabric technology, the steps of which include: S1. Preparation of water-based protective clothing materials loaded with plant active ingredients: 1g of Artemisia argyi essential oil and 3g of β-cyclodextrin were mixed and incorporated by stirring in a saturated aqueous solution for 4 hours, allowed to stand at 4℃ for 12 hours, filtered, and freeze-dried to obtain Artemisia argyi essential oil inclusion complex (EO-β-CD); using the same method, 1g of Cunninghamia lanceolata essential oil and 3g of β-cyclodextrin were mixed to prepare Cunninghamia lanceolata essential oil inclusion complex (CWO-β-CD); Weigh 2.0g of gelatin and 2.0g of gum arabic, and dissolve them separately in 100mL of water at 55℃ to prepare 2% solutions. Mix 2.0g of CWO-β-CD with 1.0g of hesperidin, add 20mL of soybean oil, and then pour the mixture into the gelatin solution at 55℃. Emulsify at 8000 rpm for 5 minutes. While stirring at 55℃ and 300 rpm, slowly add the gum arabic solution, adjust the pH to 4.0 with dilute acetic acid, and react for 40 minutes. Cool to below 10℃ in an ice bath, add 1.0g of 25% glutaraldehyde for crosslinking for 4 hours. Centrifuge, wash with water, and freeze-dry to obtain OMC-FM water-based protective clothing loaded with the first plant active ingredient. Weigh 2.0g of gelatin and 2.0g of gum arabic, and dissolve them separately in 100mL of water at 55℃ to prepare 2% solutions. Mix 1.2g of rosemary extract, 0.8g of artemisia argyi extract and 2.0g of EO-β-CD, add 20mL of soybean oil, and then pour into the gelatin solution at 55℃. Emulsify at 8000 rpm for 5 minutes. While stirring at 55℃ and 300 rpm, slowly add the gum arabic solution, adjust the pH to 4.0 with dilute acetic acid, and react for 40 minutes. Cool to below 10℃ in an ice bath, add 1.0g of 25% glutaraldehyde for crosslinking for 4 hours. After centrifugation and washing with water, disperse it in 100mL of 2% chitosan acetate solution, add 50mL of 0.5% citric acid solution, react at room temperature for 2 hours, centrifuge again, wash, and freeze-dry to obtain OMC-IC water-based sweatshirt loaded with the second plant active ingredient. S2. Preparation of anti-mildew board: 5% OMC-FM (5% by weight of the adhesive, melamine-modified urea-formaldehyde resin, 65% solid content) and 0.2% silane coupling agent KH-560 were added together and stirred at 2000 rpm for 40 minutes to disperse them evenly. Pine wood shavings (3% moisture content) and the above-mentioned anti-mildew adhesive (10% of the oven-dry shavings) were mixed evenly in a glue mixer. The mixture was laid out, pre-pressed, and hot-pressed at 180℃ and 3.5MPa (15s / mm board thickness). After cooling and sanding, the anti-mildew particleboard was obtained. S3. Preparation of multifunctional impregnated paper: OMC-IC (8% by weight of resin solids) and 0.8% polycarboxylate high-efficiency dispersant were added to melamine resin (55% solids content). The mixture was stirred at 10,000 rpm for 30 minutes to obtain a functional impregnation solution. 80 g / m² decorative base paper was passed through the impregnation tank at 10 m / min, with the impregnation amount controlled at 145 g / m² (dry resin content). The paper was dried in a five-stage drying channel at temperatures of 90℃, 110℃, 120℃, 110℃, and 90℃, with the volatile matter content after drying controlled at 7.0%, thus obtaining the multifunctional impregnated paper. S4. Finishing bonding: The multifunctional impregnated paper obtained by S3 is laid on the upper and lower surfaces of the mildew-resistant plain board obtained by S2; a double-sided hot press is used to perform a multi-stage pressing process: the first stage: the pressure is increased to 8MPa and the temperature is 155℃ within 30 seconds, and the pressure is held for 30 seconds; the second stage: the temperature is increased to 195℃ and the pressure is increased to 10MPa within 20 seconds, and the pressure is held for 50 seconds; the third stage: the heating is stopped, the internal cooling water of the press plate is turned on, and the board surface temperature is cooled to 75℃ before the board is removed; the edges are trimmed to obtain a decorative panel modified with bioactive ingredients based on water-based fabric technology.

[0023] Example 2 This embodiment provides a production process for decorative panels modified with bioactive ingredients based on water-resistant fabric technology, the steps of which include: S1. Preparation of water-based protective clothing materials loaded with plant active ingredients: 1.5g of Artemisia argyi essential oil and 4.5g of β-cyclodextrin were mixed and infused using a saturated aqueous solution method for 6 hours, allowed to stand at 4℃ for 24 hours, filtered, and freeze-dried to obtain Artemisia argyi essential oil inclusion complex (EO-β-CD); using the same method, 1.5g of Cunninghamia lanceolata essential oil and 4.5g of β-cyclodextrin were mixed to prepare Cunninghamia lanceolata essential oil inclusion complex (CWO-β-CD); Weigh 3.0g of gelatin and 3.0g of gum arabic, and dissolve them separately in 150mL of water at 55℃ to prepare 2% solutions. Mix 3.0g of CWO-β-CD with 1.5g of hesperidin, add 30mL of soybean oil, and then pour the mixture into the gelatin solution at 55℃. Emulsify at 10000rpm for 6 minutes. While stirring at 55℃ and 300rpm, slowly add the gum arabic solution, adjust the pH to 4.0 with dilute acetic acid, and react for 50 minutes. Cool to below 10℃ in an ice bath, add 1.5g of 25% glutaraldehyde for crosslinking for 5 hours. Centrifuge, wash with water, and freeze-dry to obtain OMC-FM water-based protective clothing loaded with the first plant active ingredient. Weigh 3.0g of gelatin and 3.0g of gum arabic, and dissolve them separately in 150mL of water at 55℃ to prepare 2% solutions. Mix 1.8g of rosemary extract, 1.3g of artemisia argyi extract and 3.0g of EO-β-CD, add 30mL of soybean oil, and then pour into the gelatin solution at 55℃. Emulsify at 10000 rpm for 6 minutes. While stirring at 55℃ and 300 rpm, slowly add the gum arabic solution, adjust the pH to 4.0 with dilute acetic acid, and react for 50 minutes. Cool to below 10℃ in an ice bath, add 1.5g of 25% glutaraldehyde for crosslinking for 5 hours. After centrifugation and washing with water, disperse it in 150mL of 3% chitosan acetate solution, add 75mL of 1.0% citric acid solution, react at room temperature for 3 hours, centrifuge again, wash, and freeze-dry to obtain OMC-IC water-resistant garment loaded with the second plant active ingredient. S2. Preparation of anti-mildew board: OMC-FM, comprising 15% of the solids of the adhesive (melamine-modified urea-formaldehyde resin, 65% solid content), and 0.3% of the silane coupling agent KH-560 were added together and stirred at 3000 rpm for 60 minutes to ensure uniform dispersion. Pine wood shavings (3% moisture content) and the above-mentioned anti-mildew adhesive (10% of the oven-dry shavings) were mixed evenly in a glue mixer. The mixture was then laid out, pre-pressed, and hot-pressed at 185℃ and 4.0MPa (18s / mm board thickness). After cooling and sanding, the anti-mildew particleboard was obtained. S3. Preparation of multifunctional impregnated paper: 15% of the prepared OMC-IC (solid content 55%) and 1.2% of polycarboxylate high-efficiency dispersant were added to melamine resin (solid content 55%). The mixture was stirred at 12000 rpm for 40 min to obtain a functional impregnation solution. 80 g / m² decorative base paper was passed through the impregnation tank at 12 m / min, and the impregnation amount was controlled at 150 g / m² (dry resin content). The paper was dried in a five-stage drying channel at temperatures of 95℃, 115℃, 125℃, 115℃, and 95℃, and the volatile matter content after drying was controlled at 7.5%, thus obtaining multifunctional impregnated paper. S4. Finishing bonding: The multifunctional impregnated paper obtained by S3 is laid on the upper and lower surfaces of the mildew-resistant plain board obtained by S2; a double-sided hot press is used to perform a multi-stage pressing process: the first stage: the pressure is increased to 10MPa and the temperature is 160℃ within 30 seconds, and the pressure is held for 40 seconds; the second stage: the temperature is increased to 200℃ and the pressure is increased to 12MPa within 20 seconds, and the pressure is held for 60 seconds; the third stage: the heating is stopped, the internal cooling water of the press plate is turned on, and the board surface temperature is cooled to 78℃ before the board is removed; the edges are trimmed to obtain a decorative panel modified with bioactive ingredients based on water-based fabric technology.

[0024] Example 3 This embodiment provides a production process for decorative panels modified with bioactive ingredients based on water-resistant fabric technology, the steps of which include: S1. Preparation of water-based protective clothing materials loaded with plant active ingredients: 0.5g of Artemisia argyi essential oil and 1.5g of β-cyclodextrin were mixed and infused using a saturated aqueous solution method for 2 hours, allowed to stand at 4℃ for 8 hours, filtered, and freeze-dried to obtain Artemisia argyi essential oil inclusion complex (EO-β-CD); using the same method, 0.5g of Cunninghamia lanceolata essential oil and 1.5g of β-cyclodextrin were mixed to prepare Cunninghamia lanceolata essential oil inclusion complex (CWO-β-CD); Weigh 1.0g of gelatin and 1.0g of gum arabic, and dissolve them separately in 50mL of water at 55℃ to prepare 2% solutions. Mix 1.0g of CWO-β-CD with 0.5g of hesperidin, add 10mL of soybean oil, and then pour the mixture into the gelatin solution at 55℃. Emulsify at 6000 rpm for 4 minutes. While stirring at 55℃ and 300 rpm, slowly add the gum arabic solution, adjust the pH to 4.0 with dilute acetic acid, and react for 30 minutes. Cool to below 10℃ in an ice bath, add 0.5g of 25% glutaraldehyde for crosslinking for 3 hours. Centrifuge, wash with water, and freeze-dry to obtain OMC-FM water-based protective clothing loaded with the first plant active ingredient. Weigh 1.0g of gelatin and 1.0g of gum arabic, and dissolve them separately in 50mL of water at 55℃ to prepare 2% solutions. Mix 0.6g of rosemary extract, 0.3g of artemisia argyi extract and 1.0g of EO-β-CD, add 10mL of soybean oil, and then pour into the gelatin solution at 55℃. Emulsify at 6000 rpm for 4 minutes. While stirring at 55℃ and 300 rpm, slowly add the gum arabic solution, adjust the pH to 4.0 with dilute acetic acid, and react for 30 minutes. Cool to below 10℃ in an ice bath, add 0.5g of 25% glutaraldehyde for crosslinking for 3 hours. After centrifugation and washing with water, disperse it in 50mL of 1% chitosan acetate solution, add 25mL of 0.2% citric acid solution, react at room temperature for 1 hour, centrifuge again, wash, and freeze-dry to obtain OMC-IC water-based sweatshirt loaded with the second plant active ingredient. S2. Preparation of anti-mildew board: 1% OMC-FM (1% by weight of the adhesive, melamine-modified urea-formaldehyde resin, 65% solid content) and 0.1% silane coupling agent KH-560 were added together and stirred at 1500 rpm for 20 minutes to disperse them evenly. Pine wood shavings (3% moisture content) and the above-mentioned anti-mildew adhesive (10% of the oven-dry shavings) were mixed evenly in a glue mixer. The mixture was laid out, pre-pressed, and hot-pressed at 175℃ and 3.0MPa (12s / mm board thickness). After cooling and sanding, the anti-mildew particleboard was obtained. S3. Preparation of multifunctional impregnated paper: 1% of the prepared OMC-IC (solid content 55%) and 0.4% of polycarboxylate high-efficiency dispersant were added to melamine resin (solid content 55%). The mixture was stirred at 8000 rpm for 20 min to obtain a functional impregnation solution. 80 g / m² of decorative base paper was passed through the impregnation tank at 8 m / min, and the impregnation amount was controlled at 140 g / m² (dry resin content). The paper was dried in a five-stage drying channel at temperatures of 85℃, 105℃, 115℃, 105℃, and 85℃, and the volatile matter content after drying was controlled at 6.5%, thus obtaining multifunctional impregnated paper. S4. Finishing bonding: The multifunctional impregnated paper obtained by S3 is laid on the upper and lower surfaces of the mildew-resistant plain board obtained by S2; a double-sided hot press is used to perform a multi-stage pressing process: the first stage: the pressure is increased to 6MPa and the temperature is 140℃ within 30 seconds, and the pressure is held for 20 seconds; the second stage: the temperature is increased to 190℃ and the pressure is increased to 8MPa within 20 seconds, and the pressure is held for 40 seconds; the third stage: heating is stopped, the internal cooling water of the press plate is turned on, and the board surface temperature is cooled to 70℃ before the board is removed; the edges are trimmed to obtain a decorative panel modified with bioactive ingredients based on water-based fabric technology.

[0025] Comparative Example 1 Based on Example 1, adjustments were made. The difference is that in step S1, the cross-linking reaction between chitosan acetate solution and citric acid was omitted during the preparation of the OMC-IC water-resistant garment. After loading the active ingredient, only gelatin-gum arabic was used for coating, without outer gel coating. The preparation steps included: weighing 2.0g of gelatin and 2.0g of gum arabic, dissolving them separately in 100mL of 55℃ water to prepare 2% solutions; mixing 1.2g of rosemary extract, 0.8g of Artemisia argyi extract, and 2.0g of EO-β-CD, adding 20mL of soybean oil, and then pouring the mixture into the 55℃ gelatin solution, emulsifying at 8000 rpm for 5 minutes; slowly adding the gum arabic solution while stirring at 55℃ and 300 rpm, adjusting the pH to 4.0 with dilute acetic acid, and reacting for 40 minutes; cooling to below 10℃ in an ice bath, and adding 1.0g of... Crosslinked with 25% glutaraldehyde for 4 hours; centrifuged, washed with water, and freeze-dried to obtain a water-based sweatshirt material without a chitosan gel layer, which was then used to replace the OMC-IC water-based sweatshirt loaded with the second plant active ingredient in Example 1 for subsequent steps.

[0026] Comparative Example 2 Based on Example 1, adjustments were made. The difference is that in step S1, when preparing the water-based sweatshirt material, the ratio of gelatin to gum arabic was adjusted to 1:3 (by weight), significantly altering the wall material composition. The preparation steps included: weighing 1.0g of gelatin and 3.0g of gum arabic, dissolving them separately in 100mL of water at 55℃; mixing 2.0g of CWO-β-CD with 1.0g of hesperidin, adding 20mL of soybean oil, and then pouring the mixture into the 55℃ gelatin solution, emulsifying at 8000 rpm for 5 minutes; slowly adding the gum arabic solution while stirring at 55℃ and 300 rpm, adjusting the pH to 4.0 with dilute acetic acid, and reacting for 40 minutes; cooling to below 10℃ in an ice bath, and then adding 1.0g of... Crosslinking with 25% glutaraldehyde for 4 hours; centrifugation, washing with water, and freeze-drying to obtain OMC-FM; OMC-IC was prepared using the same wall material ratio (gelatin: gum arabic = 1:3) (the chitosan coating step was also omitted), replacing OMC-FM and OMC-IC in Example 1 for subsequent steps.

[0027] Comparative Example 3 Based on Example 1, adjustments were made. Unlike Example 1, in step S1, when preparing the water-resistant garment material, gum arabic was omitted, and only gelatin was used as the wall material. The preparation method was a single coagulation method. The preparation steps included: weighing 4.0g of gelatin and dissolving it in 200mL of water at 55℃ to prepare a 2% solution; mixing 2.0g of CWO-β-CD and 1.0g of hesperidin, adding 20mL of soybean oil, and then pouring it into the gelatin solution at 55℃, emulsifying at 8000 rpm for 5 minutes; adding an equal amount of dilute acetic acid (as in Example 1) to adjust the pH to 4.0 while stirring at 55℃ and 300 rpm, and reacting for 40 minutes; cooling to below 10℃ in an ice bath, adding 1.0g of 25% glutaraldehyde for crosslinking for 4 hours; centrifuging, washing with water, and freeze-drying to obtain OMC-FM; preparing OMC-IC using the same method (single coagulation method) (also omitting the chitosan coating step), replacing OMC-FM and OMC-IC in Example 1 for subsequent steps.

[0028] Comparative Example 4 Based on Example 1, adjustments were made. Unlike Example 1, in step S1, ethyl cellulose was used instead of the gelatin-gum arabic system as the wall material for preparing the water-resistant garment material. The preparation method was solvent evaporation, and the preparation steps included: dissolving 2.0 g of ethyl cellulose in 50 mL of dichloromethane; dispersing 2.0 g of CWO-β-CD and 1.0 g of hesperidin in 20 mL of soybean oil, then mixing with the ethyl cellulose solution, and emulsifying at 8000 rpm for 5 minutes to form an O / W primary emulsion; pouring the primary emulsion into 200 mL of an aqueous solution containing 1% polyvinyl alcohol, and evaporating the solvent at 55°C and 300 rpm for 4 hours; centrifuging, washing with water, and freeze-drying to obtain OMC-FM; and preparing OMC-IC using the same method (ethyl cellulose wall material) to replace OMC-FM and OMC-IC in the subsequent steps.

[0029] Comparative Example 5 Based on Example 1, adjustments were made. Unlike Example 1, in step S1, the β-CD inclusion process of Artemisia argyi essential oil and Cunninghamia lanceolata essential oil was omitted. Instead, the liquid essential oil was directly combined with other active ingredients to form a water-coated material. The preparation steps included: weighing 2.0g of gelatin and 2.0g of gum arabic, dissolving them separately in 100mL of water at 55℃ to prepare a 2% solution; mixing 1.0g of liquid Cunninghamia lanceolata essential oil (replacing CWO-β-CD) with 1.0g of hesperidin, adding 20mL of soybean oil, and then pouring it into the gelatin solution at 55℃, emulsifying at 8000 rpm for 5 minutes, and the subsequent steps were the same as in Example 1 for preparing OMC-FM; similarly, 1.0g of liquid Artemisia argyi essential oil (replacing EO-β-CD) was mixed with rosemary extract and other ingredients to prepare OMC-IC, replacing OMC-FM and OMC-IC in Example 1 for subsequent steps.

[0030] Comparative Example 6 Based on Example 1, adjustments were made. Unlike Example 1, in step S2, only hesperidin was used to prepare the anti-mildew OMC-FM water-resistant garment, without adding the cedarwood essential oil inclusion complex (CWO-β-CD). The preparation steps included: weighing 2.0g of gelatin and 2.0g of gum arabic, dissolving them separately in 100mL of 55℃ water to prepare a 2% solution; adding only 1.5g of hesperidin (adjusting the amount to maintain approximately equal solid content) to 20mL of soybean oil, and then pouring it into the 55℃ gelatin solution. The subsequent steps were the same as in Example 1 for preparing OMC-FM, replacing the OMC-FM in Example 1 for subsequent steps.

[0031] Comparative Example 7 Based on Example 1, adjustments were made. Unlike Example 1, in step S1, when preparing the composite active ingredient OMC-IC water-resistant garment, the Artemisia argyi essential oil inclusion complex (EO-β-CD) was not added. The preparation steps included: weighing 2.0g of gelatin and 2.0g of gum arabic, dissolving them separately in 100mL of water at 55℃ to prepare a 2% solution; mixing 1.2g of rosemary extract and 0.8g of Artemisia argyi extract, adding 20mL of soybean oil, and then pouring it into the gelatin solution at 55℃. The subsequent steps were the same as in Example 1 (including chitosan coating) to prepare OMC-IC, replacing the OMC-IC in Example 1 for subsequent steps.

[0032] Comparative Example 8 Based on Example 1, adjustments were made. Unlike Example 1, in step S2, instead of preparing the OMC-FM water-resistant garment, a physical mixture of cedarwood essential oil inclusion complex (CWO-β-CD) and hesperidin was directly added to the adhesive. The preparation steps included: OMC-FM was not prepared. Powdered cedar essential oil inclusion complex (CWO-β-CD) and powdered hesperidin (mixed at a mass ratio of 2:1 within OMC-FM in Example 1) accounting for 5% of the solid mass of the adhesive (melamine-modified urea-formaldehyde resin, solid content 65%) were directly added to the adhesive along with 0.2% of silane coupling agent KH-560, and stirred at 2000 rpm for 40 minutes. Pine wood shavings (moisture content 3%) and the above-mentioned anti-mildew adhesive (10% of oven-dry shavings) were mixed evenly in a glue mixer. The mixture was laid out, pre-pressed, and hot-pressed at 180°C and 3.5 MPa (time 15 s / mm board thickness), cooled and sanded to obtain a comparative raw board; subsequent steps were then performed.

[0033] Comparative Example 9 Based on Example 1, adjustments were made. Unlike Example 1, in step S3, instead of preparing the OMC-IC water-resistant garment, the physical mixture of each active ingredient was directly added to the impregnation resin. The preparation steps included: not preparing OMC-IC; directly adding powdered rosemary extract, artemisia extract, and artemisia essential oil inclusion complex (EO-β-CD) (total amount accounting for 8% of the resin solid mass) in melamine resin (solid content 55%) in the same amount as the active ingredients in OMC-IC in Example 1, and 0.8% of polycarboxylate high-efficiency dispersant, and stirring at 10000 rpm for 30 min to obtain the functional impregnation solution for subsequent steps.

[0034] Comparative Example 10 Based on Example 1, adjustments were made. Unlike Example 1, in step S4, a conventional single-stage hot-pressing process for decorative panels was adopted, eliminating the multi-stage heating, cooling, and pressure-holding procedures. The preparation steps included: laying the multifunctional impregnated paper obtained in S3 onto the upper and lower surfaces of the mildew-resistant plain board obtained in S2; using a double-sided hot press, directly holding the pressure at 195°C and 10MPa for 50 seconds, and then releasing the pressure to remove the board; trimming the edges to obtain the comparative decorative panel.

[0035] Experimental Example: The performance of the decorative panels prepared in Examples 1-3 and Comparative Examples 1-10 was investigated by conducting the following tests: Anti-mold performance test: Referring to GB / T 18261-2013 "Test method for efficacy of anti-mold agents against mold and discoloration fungi in wood", the test specimens were inoculated with a mixed mold spore suspension and placed in a constant temperature and humidity chamber at 28±1℃ and relative humidity above 85% for 28 days. The surface mold growth was observed and the anti-mold level was evaluated (Level 0: no mold growth; Level 1: mold growth area <25%; Level 2: mold growth area 25%-50%; Level 3: mold growth area 50%-75%; Level 4: mold growth area >75%). Antibacterial properties test: The test was conducted in accordance with GB / T 21866-2008 "Determination of antibacterial properties and antibacterial effects of antibacterial coatings (films)". The test bacteria were Staphylococcus aureus (ATCC 6538, Gram-positive bacteria), Escherichia coli (ATCC 8739, Gram-negative bacteria), Klebsiella pneumoniae (ATCC 4352, Gram-negative bacteria), and Aspergillus niger (ATCC 16404, mold). Antiviral performance test: Referring to ISO 21702:2019 "Determination of antiviral activity of plastics and other non-porous surfaces", influenza A virus H3N2 subtype and enterovirus EV71 type were selected as test viruses. The antiviral rate was calculated by measuring the logarithmic decrease in virus titer after 2 hours of contact with the decorative panel surface. Antiviral rate (%) = [(control sample virus titer - sample virus titer) / control sample virus titer] × 100%; Antioxidant performance test: The decorative panel to be tested was cut into standard samples of 50 mm × 50 mm. The surface of the sample was gently wiped with a lint-free cloth soaked in anhydrous ethanol to remove dust. The cleaned sample was placed in a standard laboratory environment (temperature 23±2℃, humidity 50±5%) for 24 hours to equilibrate. DPPH was accurately weighed and prepared into a 0.1 mmol / L solution with anhydrous ethanol. The solution was stored in the dark and used immediately after preparation. The equilibrated sample was placed in a clean glass petri dish, and 10.0 mL of DPPH working solution was transferred to completely cover the sample surface. The petri dish was covered and placed in the dark. The reaction was carried out in a constant temperature shaker at 100 rpm for 60 minutes at 25℃. After the reaction, the supernatant was immediately aspirated with a pipette, and its absorbance was measured at 517 nm using a UV-Vis spectrophotometer and recorded as A1. 10.0 mL of the supernatant was then taken. The DPPH working solution, without contacting the sample, was placed in the dark under the same conditions for 60 minutes, and the absorbance was measured as a blank control A0. 10.0 mL of anhydrous ethanol was used to cover the sample of the same specification, and the absorbance was measured after the reaction. This absorbance was used to correct for potential interference from the sample's own color and served as a background control, denoted as A2. The DPPH free radical scavenging rate on the plate surface = (A0 - A1 - A2) / A0 × 100%; where A0: absorbance of the blank control; A1: absorbance of the sample reaction solution; A2: absorbance of the sample background control; each group of samples was tested in parallel three times, and the average value was taken as the final result. Aroma release and persistence test: A trained aroma evaluation team of 10 people will smell and evaluate the surface of the board in a standard environmental test room at 23°C and 50% humidity; record the aroma intensity at the initial moment after production and after 60 days of storage, using a 5-point scale: 0 odorless, 1 faint, 2 identifiable, 3 obvious, 4 strong and aroma characteristics. The test results are shown in Tables 1 and 2 below: Table 1 Table 2 As described above, this invention utilizes a combination of active ingredients and water-based fabric materials to create a multifunctional decorative panel that integrates anti-mildew, antibacterial, antiviral, antioxidant, and long-lasting natural fragrance properties. The examples all exhibit excellent anti-mildew (Grade 0), broad-spectrum antibacterial (>92%), antiviral (>99.5%), antioxidant, and long-lasting fragrance release (≥3.0 points).

[0036] Comparative Example 1: OMC-IC without a chitosan gel layer exhibited a comprehensive decline in performance. The anti-mold rating dropped from 0 to 1, and all antibacterial rates and aroma persistence scores were significantly lower than in Example 1. This indicates that the outer gel layer formed by the cross-linking of chitosan and citric acid is crucial for enhancing the mechanical strength and sustained-release properties of the water-resistant fabric (OMC-IC). Its absence makes the wall material (gelatin-gum arabic) more prone to damage during subsequent hot pressing and use, leading to premature and rapid release of active ingredients, thus weakening long-lasting antibacterial, anti-mold, and aroma release properties.

[0037] In Comparative Example 2, when the ratio of gelatin to gum arabic in the wall material was changed to 1:3, the performance deteriorated, with the anti-mildew rating dropping to only level 2, the antibacterial rate decreasing to 80-88%, and the aroma score to only 1.5. This confirms that a 1:1 ratio of gelatin to gum arabic is the optimal condition for forming a stable composite cohesive water-based protective film wall material. The imbalance in the ratio disrupted the electrostatic interaction and spatial conformation between the two biopolymers, resulting in poor molding of the water-based protective film material, low encapsulation rate, and loose wall film structure, which seriously affected the protection and sustained-release effect of the active ingredients.

[0038] Comparative Example 3, using only gelatin-based single-coagulation method to prepare water-resistant fabric material, exhibited the worst performance. It had a mildew resistance level as high as 3, the lowest antibacterial rate, and almost no aroma; this indicates that the composite coagulation system omitting gum arabic is unsuitable for this technical solution. The water-resistant fabric material prepared by single-coagulation method is far inferior to the gelatin-gum arabic composite system in terms of particle uniformity, encapsulation efficiency, and stability to the composite oil phase (containing multiple active ingredients), making it impossible to construct an effective long-lasting functional system.

[0039] Comparative Example 4, which used ethyl cellulose instead of gelatin-gum arabic, showed a significant decrease in performance; its anti-mildew rating and antibacterial rate were both inferior to those of Example 1. This indicates that the gelatin-gum arabic-based composite coagulation method has unique advantages in water-based garment technology. Although ethyl cellulose can form capsules, its preparation process involves organic solvents, and the surface properties, compatibility with wood adhesives and impregnation resins, and mild loading environment for bioactive components of the resulting water-based garment material are all inferior to those of the water-based composite coagulation method, resulting in a compromise in overall functionality.

[0040] Comparative Example 5 showed a significant reduction in performance due to the absence of β-CD inclusion complex in the essential oil; its anti-mildew rating dropped to level 1, and its antibacterial rate and aroma persistence decreased substantially. This directly demonstrates the necessity of β-cyclodextrin inclusion technology. This technology transforms volatile and unstable liquid essential oils into stable solid inclusion complexes, greatly reducing volatilization and thermal decomposition losses during subsequent emulsification, drying, and high-temperature hot pressing of the fabric. This is a prerequisite for ensuring effective essential oil loading and achieving long-lasting sustained-release function.

[0041] In Comparative Example 6, OMC-FM without the addition of cedarwood essential oil inclusion complex showed a significant decrease in antifungal performance (Grade 2), and its antibacterial rate against mold (Aspergillus niger) was also affected. This indicates that there is a clear synergistic effect between cedarwood essential oil inclusion complex (CWO-β-CD) and hesperidin in antifungal activity; using hesperidin alone cannot achieve the optimal broad-spectrum and long-lasting antifungal effect, and the combination of the two is the key to achieving highly efficient antifungal activity in this solution.

[0042] Comparative Example 7 OMC-IC did not contain Artemisia argyi essential oil inclusion complex, and its aroma function was basically lost (0.5 points), but its anti-mold and antibacterial properties remained excellent (similar to Example 1). This clearly distinguishes the division of labor between different functional layers and active ingredients: the anti-mold function is mainly undertaken by the OMC-FM (containing CWO-β-CD and hesperidin) in the plain layer; the antibacterial function is jointly undertaken by the plain layer and the impregnation layer (OMC-IC contains rosemary extract and Artemisia argyi extract); while the aroma function almost entirely depends on the Artemisia argyi essential oil inclusion complex (EO-β-CD) loaded in the OMC-IC of the impregnation layer.

[0043] In Comparative Example 8, the anti-mold component was not incorporated into the water-resistant sweatshirt material; instead, it was directly added as powder, resulting in a decline in all performance aspects. The anti-mold rating dropped to level 2, and the antibacterial rate and fragrance durability were both lower than in Example 1. This indicates that directly mixing the active ingredient powder into the adhesive, compared to pre-coating and protecting with OMC-FM water-resistant sweatshirt, has problems such as uneven dispersion, easy decomposition and volatilization during high-temperature and high-pressure hot pressing, and weak bonding with wood, leading to a decrease in the utilization rate of effective ingredients and a poorer functional durability.

[0044] In Comparative Example 9, the active components of the impregnation layer were not materialized in the water-resistant sweatshirt; instead, powder was directly added, resulting in a comprehensive deterioration in performance. The antibacterial rate and fragrance durability decreased significantly. This once again proves the core advantage of the OMC-IC water-resistant sweatshirt: its wall material, formed through composite coagulation, can effectively encapsulate, protect, and slowly release multiple active ingredients. Directly adding powder leads to a significant loss of active ingredients during impregnation, drying, and hot pressing, poor compatibility with resin, and an inability to achieve controlled release, thus failing to construct a long-lasting surface functional layer.

[0045] Comparative Example 10 uses a conventional single-stage hot-pressing process; the aroma persistence is significantly reduced (1.8 points), but the impact on anti-mildew and antibacterial properties is relatively small; this shows that the multi-stage pressing process used in this invention, especially the cooling stage, is crucial for protecting the heat-sensitive water-coating material in the impregnated paper (especially the artemisia essential oil component in OMC-IC); direct pressure release after conventional high-temperature pressing will cause the residual heat inside the board to continue to act on the aroma water-coating material, which may damage its wall structure or accelerate the volatilization of the core material, thereby impairing the long-lasting fragrance release function.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention; those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention; and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A production process of a facing panel modified with bioactive ingredients based on water-jacket technology, characterized by the steps of The method comprises the following steps: S1. Preparing a water-coat material loaded with a plant active ingredient: a water-coat material loaded with different plant active ingredients is prepared by using a complex coacervation method and using a biological polymer as a wall material; S2. Preparing a mildew-proof type board: the first water-coat material is dispersed in an adhesive for artificial boards to obtain a mildew-proof adhesive; wood raw materials are mixed with the mildew-proof adhesive, laid, and hot-pressed to obtain a mildew-proof type board; S3. Preparing a multifunctional impregnated paper: the second water-coat material is dispersed in melamine impregnated resin to obtain a functional impregnated liquid; the functional impregnated liquid is used to impregnate a decorative base paper, and the multifunctional impregnated paper is obtained after drying; S4. Surface pressing: the multifunctional impregnated paper is covered on the surface of the mildew-proof type board, and hot pressing is performed to obtain the plant active surface artificial board.

2. A production process of a modified veneer sheet using bioactive ingredients based on water-based coating technology according to claim 1, characterized in that, In step S1, the complex coacervation method is to use gelatin and gum arabic as wall materials, to form a water-coat material wall on the surface of oil droplets by adjusting the pH, and to be cross-linked and solidified by glutaraldehyde.

3. The production process of a modified veneer using bioactive ingredients based on water- based coating technology according to claim 1, characterized in that, In step S1, the wormwood essential oil inclusion compound and the Chinese fir essential oil inclusion compound are both solid powders prepared by using the saturated aqueous solution method to make wormwood essential oil, Chinese fir essential oil, and β-cyclodextrin inclusion, and then drying.

4. The production process of a modified veneer using bioactive ingredients based on water- based coating technology according to claim 1, characterized in that, In step S1, the second water-coat material is further coated with a gel layer, and the specific steps are as follows: the primary water-coat material prepared by the complex coacervation method is dispersed in a chitosan acetic acid solution, and citric acid is added as a cross-linking agent for reaction to build a chitosan-based gel layer on the surface of the water-coat material.

5. The production process of a modified veneer using bioactive ingredients based on water- based coating technology according to claim 1, characterized in that, In step S2, the core material of the first water-coat material includes Chinese fir essential oil inclusion compound and nobiletin.

6. The production process of a modified veneer using bioactive ingredients based on water- based coating technology according to claim 1, characterized in that, In step S3, the core material of the second water-coat material includes rosemary extract, mugwort leaf extract, and wormwood essential oil inclusion compound.

7. The production process of a modified veneer using bioactive ingredients based on water- based coating technology according to claim 1, characterized in that, In steps S2 and S3, the addition amount of the water-coat material accounts for 1%-15% of the solid mass of the adhesive and the solid mass of the impregnated resin, respectively.

8. The production process of a modified veneer using bioactive ingredients based on water- based coating technology according to claim 1, characterized in that, In step S4, the hot pressing is performed by using a multi-stage temperature rising and pressure maintaining process, which comprises the following steps: in the first stage, the temperature is 140-160℃, the pressure is 6-10MPa, and the pressure is maintained for 20-40 seconds; in the second stage, the temperature is raised to 190-200℃, the pressure is maintained at 8-12MPa, and the pressure is maintained for 40-60 seconds; in the third stage, the pressure is reduced, and the board surface temperature is cooled to below 80℃ before the board is discharged.

9. A surface board modified based on a water-coat technology using a biological active ingredient, which is prepared by the method of any one of claims 1 to 8.

10. Use of the surface board modified based on a water-coat technology using a biological active ingredient according to claim 9 in the preparation of furniture and indoor decorative boards.

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