Anti-deformation plant spliced picture integrated manufacturing process

Abstract

The application belongs to the technical field of plant process picture making, and discloses an anti-deformation plant collage picture integrated making process, which comprises five closely connected procedures of raw material screening and anti-deformation pretreatment, gradient dehydration and initial pressure shaping, bottom plate pretreatment and accurate positioning collage, integrated constant temperature pressing, double-layer sealing and shaping, and constructs an integrated anti-deformation system of "raw material-process-protection": the fiber toughness is enhanced through the anti-corrosion and anti-deformation treatment liquid, the three-dimensional gradient dehydration shaping process is adopted to realize uniform water removal and sufficient stress release, the bonding stability is strengthened through the primer treatment and integrated constant temperature pressing, and the double-layer sealing structure resists the influence of environmental factors and inhibits deformation. The collage picture product made by the application has high flatness and strong anti-deformation capacity, and has no obvious deformation after being stored at room temperature for 24 months, while the production efficiency and yield are improved, the application is suitable for various plants and bottom plates, and can realize manual and industrial large-scale production, and has environmental protection and practicality.

Description

Technical Field

[0001] This invention belongs to the field of plant art painting technology, specifically relating to an integrated production process for anti-deformation plant collage painting. Background Technology

[0002] Plant collage art is a decorative art form made from the roots, stems, leaves, flowers, fruits, and bark of natural plants through processes such as collection, pruning, pressing, drying, collage, and mounting. It combines natural ecological beauty, cultural connotation, and artistic value, and is widely used in home decoration, customized gifts, cultural displays, and other scenarios.

[0003] Currently, existing plant mosaic art production processes generally suffer from fragmented procedures and insufficient anti-deformation design, resulting in low finished product qualification rates and short shelf lives, making it difficult to meet the needs of large-scale production and long-term use. Specific defects are as follows: Plant materials are characterized by high water content, loose cell wall structure, and irregular fiber arrangement. Traditional production methods use only a single temperature and pressure pressing and drying method, which cannot achieve uniform removal of water from the plant. This can easily lead to water residue or excessively rapid dehydration, causing uneven shrinkage, edge warping, leaf cracking, and other deformation phenomena in the plant materials, which seriously affect the flatness and aesthetics of the image.

[0004] The production process is segmented and interconnected, with pressing and drying, splicing and fixing, shaping and sealing processes being independent of each other. During the transfer process, the plant materials are easily affected by the ambient temperature and humidity, resulting in secondary deformation. At the same time, the segmented processes require multiple transfers and repositionings, which not only reduces production efficiency but also easily causes damage to the plant materials and misalignment of the splicing, further aggravating the risk of deformation.

[0005] The bonding system between the base plate and the plant material is poorly designed. The conventional adhesive has insufficient adhesion, poor compatibility with plant fibers and base plate materials, and lacks targeted base coating protection, resulting in a loose bond between the plant material and the base plate. During long-term storage, it is prone to warping and delamination, which in turn causes overall image deformation. At the same time, the adhesive has poor temperature and humidity resistance and is prone to aging and failure in high temperature and high humidity environments, accelerating the deformation process.

[0006] The lack of a systematic anti-deformation design, with only simple processing for a single process, and the failure to form an integrated anti-deformation system of "raw material pretreatment - dehydration and shaping - bonding and pressing - sealing and protection", cannot fundamentally solve the deformation problem of plant collages. This results in a high rate of rework and a short preservation period. Generally, obvious deformation will appear after 3 to 6 months of storage, making it difficult to meet the needs of long-term collection.

[0007] Existing processes are poorly adaptable to different types of plant materials and do not adjust process parameters according to differences in plant fiber density and moisture content. This results in some soft and loosely fibrous plant materials (such as petals and thin leaves) being easily deformed, while some hard and high-moisture plant materials (such as thick leaves and fruit shells) are not thoroughly dehydrated, leading to significant deformation risks. Summary of the Invention

[0008] The purpose of this invention is to overcome the defects of existing plant collage production processes and provide an integrated production process for anti-deformation plant collages. This process achieves a synergistic anti-deformation effect from three dimensions: raw materials, processes, and protection, improving the flatness and durability of the finished product, simplifying the production process, increasing production efficiency, and adapting to various plant raw materials and base types, thus meeting the dual needs of handmade production and industrialized large-scale production.

[0009] To address the aforementioned technical problems, this invention provides an integrated manufacturing process for anti-deformation plant mosaic artwork. Through parameter coordination and structural optimization of each process, it achieves comprehensive anti-deformation capabilities. Specifically, it includes the following steps: S1. Raw material screening and anti-deformation pretreatment: Select whole plant materials that are free from mold and damage, trim them to the design size, wash them with deionized water and dry the surface moisture; immerse the plant materials in the anti-corrosion and anti-deformation treatment solution for 20-40 minutes, take them out and dry the excess treatment solution on the surface, and drain them for later use. S2. Gradient dehydration and initial pressing: The pretreated plant material is sandwiched between absorbent paper and silicone buffer plate and placed in a constant temperature and humidity pressing equipment. A three-dimensional gradient dehydration and pressing process is used for dehydration and pressing. After cooling to room temperature, the plant material is taken out and screened to obtain flat and undeformed plant material. S3. Baseboard pretreatment and precise positioning and splicing: Select a baseboard with suitable material, grind the baseboard, wipe it with anhydrous ethanol, apply a layer of primer evenly and let it dry and cure. Then, according to the splicing position marked in the pre-designed drawing, accurately splice the plant materials selected in step S2 onto the baseboard, press and stick them together and let them stand for 10 to 15 minutes. S4. Integrated constant temperature pressing: The completed painting core is sent into a constant temperature hot press, and inert gas is introduced for constant temperature pressing. After pressing, it is slowly cooled to room temperature and the painting core is removed. S5. Double-layer sealing and shaping: In a dust-free environment, the painting core is sealed by spraying a base layer sealant and a top layer sealant in sequence. Then, it is framed in a sealed manner, with a sponge cushioning pad placed between the painting core and the frame to complete the production.

[0010] As a further description of the above technical solution: the components and mass percentages of the anti-corrosion and anti-deformation treatment solution in step S1 are as follows: anhydrous ethanol 15%–25%, polyethylene glycol (molecular weight 400–600) 8%–12%, citric acid 2%–5%, magnesium chloride 3%–6%, glycerol 1%–3%, and deionized water balance; anhydrous ethanol can quickly penetrate plant fibers, initially remove surface and shallow moisture, and inhibit mold growth; polyethylene glycol and glycerol work synergistically to fill the gaps between plant fibers, enhance fiber toughness, and reduce shrinkage during dehydration; citric acid can adjust the pH value of the treatment solution, prevent discoloration of plant materials, and soften plant fibers to avoid cracking during dehydration; magnesium chloride can enhance the stability of plant fibers, inhibit fiber shrinkage and deformation, and lay the foundation for subsequent gradient dehydration and shaping.

[0011] As a further description of the above technical solution: the three-dimensional gradient dehydration and shaping process described in step S2 goes through three stages in sequence: the first stage, temperature 25-30℃, pressure 0.1-0.2 MPa, time 1.5-2.5h; the second stage, temperature 45-55℃, pressure 0.25-0.35 MPa, time 3-4h; the third stage, temperature 60-70℃, pressure 0.4-0.5 MPa, time 5-7h; the heating rate in all three stages is 5-8℃ / h; after dehydration and shaping, the temperature is reduced to room temperature at a cooling rate of 3-5℃ / h.

[0012] As a further description of the above technical solution: the base plate in step S3 is made of wood, bamboo, PVC or aluminum substrate, the thickness of the base plate is 3 to 5 mm, and the moisture content is controlled at 6% to 10%.

[0013] As a further description of the above technical solution: the primer in step S3 is prepared by mixing epoxy resin, coupling agent KH-550, talc powder and deionized water in a mass ratio of 50:5:8:37. The thickness of the primer is 0.1 to 0.2 mm, the drying and curing temperature is 50 to 60°C, and the time is 30 to 40 min.

[0014] As a further description of the above technical solution: In step S3, a thin silicone sheet is covered on the surface of the plant material during the collage process, and the thin silicone sheet is gently pressed to adhere to the plant material.

[0015] As a further description of the above technical solution: the temperature of the isothermal pressing in step S4 is 70-80℃, the pressure is 0.3-0.4 MPa, and the holding time is 8-12 min.

[0016] As a further description of the above technical solution: the bottom sealing agent in step S5 is a polyurethane varnish with 0.5% to 1% UV stabilizer UV-531 added, the spraying thickness of the bottom sealing agent is 0.08 to 0.12 mm, the curing temperature is 60 to 70℃, and the curing time is 1 to 1.5 h; the top sealing agent is an acrylic varnish with 0.3% to 0.5% polymethyl methacrylate anti-deformation agent added, the spraying thickness of the top sealing agent is 0.15 to 0.2 mm, the curing temperature is 55 to 65℃, and the curing time is 2 to 2.5 h.

[0017] As a further description of the above technical solution: the plant material mentioned in step S1 is a leaf, petal, stem or fruit shell. For plant materials that are soft and easily curled, an additional preliminary flattening treatment is performed before pretreatment.

[0018] Compared with existing technologies, the core advantage of this invention lies in constructing a comprehensive and integrated anti-deformation system. This system works synergistically from three dimensions: raw materials, processes, and protection, significantly improving the anti-deformation performance of plant mosaic artwork. It also possesses advantages such as high efficiency, stability, and wide applicability. Specific beneficial effects are as follows: 1. Significantly improved resistance to deformation, completely solving the pain points of traditional processes: Pre-treatment with a customized anti-corrosion and anti-deformation solution fills the gaps between plant fibers and enhances fiber toughness, inhibiting deformation from the source; a three-dimensional gradient dehydration and shaping process achieves uniform removal of internal moisture from the plants, fully releasing fiber stress and avoiding uneven shrinkage, warping, and cracking; an integrated constant temperature pressing process ensures a tight bond between the plant material and the base plate, balancing stress and preventing deformation caused by delamination and displacement; a double-layer sealing structure forms a dense protection, resisting the effects of moisture, ultraviolet rays, and changes in environmental temperature and humidity, ensuring that the finished product does not deform during long-term storage. Testing shows that the plant mosaic artwork produced by this invention, after 24 months of storage at room temperature (20-25℃) and humidity (40%-60%), exhibits a flatness deviation of ≤0.1mm, with no shrinkage, warping, cracking, or delamination, demonstrating an 80% improvement in resistance to deformation compared to traditional processes; after 6 months of storage in a high-temperature (40℃) and high-humidity (80%) environment, there is no significant deformation, with stability far exceeding that of traditional processes.

[0019] 2. Integrated process design, improving both efficiency and yield: The process of raw material pretreatment, gradient dehydration, positioning and splicing, constant temperature pressing, sealing and shaping is closely linked to form a continuous production process. This avoids secondary deformation, damage to plant materials, and splicing misalignment caused by process transfers, and improves production efficiency by 40% to 50% compared to traditional segmented processes. At the same time, the parameters of each process are optimized in a coordinated manner to address the deformation risks of different plant materials. The finished product qualification rate is increased from 60% to 70% in traditional processes to over 95%, significantly reducing production costs and rework rates, making it suitable for industrial-scale production.

[0020] 3. Strong adhesion, high durability, and significantly extended preservation period: The customized primer and double-layer sealant form a synergistic protection, enhancing the adhesion between the plant material and the baseboard and preventing delamination and warping. The isolation effect of the primer and the moisture-proof, UV-proof, insect-proof, and mildew-proof effects of the sealant effectively protect the plant material and the baseboard, preventing the plant from fading and becoming brittle, and the baseboard from absorbing moisture and deforming. This extends the preservation period of the finished product from 3 to 6 months in traditional processes to more than 2 years, meeting the needs of long-term collection and display.

[0021] 4. Wide applicability and strong adaptability: It can be adapted to a variety of plant materials (thin leaves, thick leaves, petals, fruit shells, stems, etc.) and a variety of base plate types (wood, bamboo, PVC, aluminum base plate). By adjusting the process parameters, it can meet the design needs of different plant collages. At the same time, the process can be flexibly switched between handmade production and industrial mass production, which is suitable for both small workshops and large production lines, and has a wide range of application scenarios.

[0022] 5. Environmentally friendly and safe, combining aesthetics and practicality: The treatment liquid, primer, and sealant used are all environmentally friendly and non-toxic formulas with no harmful gas emissions, meeting environmental standards; the double-layer sealant has high transparency, does not affect the natural color and texture of the plant materials, preserves the natural beauty of the plant mosaic, and at the same time improves the wear resistance and impact resistance of the picture, combining aesthetics and practicality. Attached Figure Description

[0023] Figure 1 This is a flowchart of the integrated manufacturing process for the anti-deformation plant mosaic artwork of this invention.

[0024] Figure 2 This is a finished product of maple and ginkgo leaf collage made in application example 1.

[0025] Figure 3 This is the finished product of the petal and fern leaf collage made in application example 2.

[0026] Figure 4 This is the finished product of the thick leaf and walnut shell collage made in application example 3. Detailed Implementation

[0027] This invention provides an integrated manufacturing process for anti-deformation plant mosaic art. The core of this process lies in constructing an integrated anti-deformation system comprising "pretreatment - gradient dehydration - positioning and collage - constant temperature pressing - sealing and shaping." The manufacturing process is as follows: Figure 1 As shown, through parameter coordination and structural optimization of each process, all-round deformation resistance is achieved. The specific steps are as follows: S1. Raw material screening and anti-deformation pretreatment Select complete plant materials that are free from mold, damage, and insect infestation. Prioritize plant leaves, petals, stems, or fruit shells with moderate fiber density and good toughness. Trim them to the corresponding size according to design requirements, and remove impurities, dead leaves, and excess petioles to ensure the integrity of the plant material's shape. For plant materials that are soft and easily curled (such as petals and thin leaves), perform an additional preliminary flattening treatment to avoid initial deformation. Gently rinse the surface of the plant material with deionized water to remove dust, mud and surface attachments. After rinsing, gently absorb the surface moisture with absorbent filter paper. Avoid rubbing vigorously to prevent damage to the plant material. Ensure that there is no moisture residue on the surface to prevent localized mold or deformation during the subsequent dehydration process. After trimming and cleaning, place the plant material into a customized anti-corrosion and anti-deformation treatment solution and soak for 20-40 minutes. Stir gently every 10 minutes during the soaking process to ensure that the treatment solution penetrates evenly into the plant fibers. After soaking, remove the plant material, use absorbent filter paper to blot off the excess treatment solution on the surface, and drain until there are no drips on the surface. The components and mass percentages of the anti-corrosion and anti-deformation treatment liquid are as follows: anhydrous ethanol 15%–25%, polyethylene glycol (molecular weight 400–600) 8%–12%, citric acid 2%–5%, magnesium chloride 3%–6%, glycerol 1%–3%, and deionized water balance.

[0028] S2, Gradient dehydration and initial pressure setting The pretreated plant material is laid flat on a buffer board, covered with a layer of absorbent paper (preferably virgin wood pulp absorbent paper, which is highly absorbent and does not stick to the plant material) on both the top and bottom, and then covered with another buffer board (using soft silicone buffer board to avoid damaging the plant material). It is then placed in a constant temperature and humidity pressing device, employing a three-dimensional gradient dehydration and shaping process of "gradient pressure + gradient temperature + gradient time" to achieve uniform removal of internal moisture from the plant material, fully releasing internal fiber stress and preventing shrinkage and warping caused by excessively rapid or uneven dehydration. The specific gradient parameters are as follows: The first stage (low-pressure pre-compression dehydration): temperature 25-30℃, pressure 0.1-0.2MPa, time 1.5-2.5h, slowly removes surface and shallow free water from the plant material to avoid rapid evaporation of water, which would cause excessive surface shrinkage and internal water retention, resulting in a difference in shrinkage between the inside and outside. At the same time, low-pressure pre-compression initially fixes the shape of the plant material to prevent displacement and curling during subsequent dehydration. The second stage (medium-pressure heating and dehydration): temperature 45-55℃, pressure 0.25-0.35MPa, time 3-4h; in this stage, the temperature and pressure are gradually increased to promote the slow removal of bound water from the plant material. At the same time, the medium pressure allows the plant fibers to gradually expand and arrange evenly, releasing some internal stress and reducing uneven fiber shrinkage. The heating rate is controlled at 5℃ / h to avoid cracking of the plant material due to excessively rapid heating. The third stage (high-pressure constant temperature and pressure setting): temperature 60-70℃, pressure 0.4-0.5MPa, time 5-7h; this stage maintains constant temperature and high pressure to completely remove residual moisture from the plant material (reducing the moisture content of the plant material to 8%-12%, which is the stable moisture content of plant fibers, effectively preventing moisture absorption or dehydration deformation during subsequent storage). At the same time, the high pressure setting ensures that the plant material is tightly bonded to the absorbent paper and cushioning board, achieving flat setting and ensuring that the surface of the plant material is free of wrinkles and warping, and the fiber arrangement is stable, laying the foundation for subsequent collage. After the gradient dehydration and shaping are completed, the equipment temperature is slowly reduced to room temperature (cooling rate 3℃ / h to avoid excessive temperature difference causing thermal expansion and contraction deformation of the plant material). Then, the plant material is taken out, the surface absorbent paper is removed, the flatness of the plant material is checked, and deformed or damaged materials are discarded for later use.

[0029] S3, Base plate pretreatment and precise positioning assembly Choose a baseboard that is dimensionally stable and not easily deformed. Options include wooden baseboards (after degreasing and drying, with a moisture content controlled at 6%–10%), bamboo baseboards (after carbonization to enhance stability), PVC baseboards, or aluminum baseboards. The baseboard thickness should be 3–5 mm to ensure that the baseboard itself is free from warping and deformation. Sand the baseboard with 400–600 grit sandpaper to evenly sand the surface, removing burrs and impurities, making the surface smooth and flat. Then wipe the surface with anhydrous ethanol to remove dust and oil stains, and let it dry for later use. A customized primer is evenly applied to the pretreated substrate surface. The primer thickness is 0.1–0.2 mm. After application, the substrate is placed in a constant temperature drying oven and dried at 50–60°C for 30–40 minutes until the primer is completely cured. The primer is made by mixing epoxy resin, coupling agent (KH-550), talc powder, and deionized water in a mass ratio of 50:5:8:37. Its function is to enhance the adhesion of the substrate surface, fill the tiny pores on the substrate surface, and form a dense isolation layer to prevent deformation caused by moisture absorption or dehydration of the substrate, avoid delamination between the substrate and the plant material, and further improve the overall deformation resistance. After the base coat has cured, lay the base plate flat on the workbench. According to the pre-designed artwork, use removable positioning adhesive to mark the placement positions of the plant materials on the surface of the base plate. Then, precisely assemble the plant materials, which have undergone gradient dehydration and shaping, according to the marked positions. During the assembly process, use special tweezers to gently press to ensure that the plant materials are tightly attached to the base plate without air bubbles or gaps. For thin and easily deformable plant materials, cover the surface with a thin silicone sheet during assembly, press gently, and let it stand for 10 to 15 minutes to ensure a firm fit and prevent displacement or lifting during subsequent pressing.

[0030] S4, Integrated Temperature-Controlled Pressing The completed artwork (baseboard + plant materials) is then placed into a constant-temperature hot press. An integrated pressing process of "constant temperature, constant pressure, and pressure holding" is used to achieve a tight bond between the plant materials and the baseboard. This process also further releases stress between the plant fibers and the baseboard, eliminating minor deformations that occur during the assembly process. Specific parameters are as follows: Pressing temperature: 70~80℃ (adjust according to the type of base plate; 70~75℃ for wooden and bamboo base plates, and 75~80℃ for PVC and aluminum base plates), with a temperature deviation controlled within ±2℃ to avoid discoloration of the plant materials and deformation of the base plate due to excessive temperature, and weak adhesion due to excessive temperature; Pressing pressure: 0.3~0.4 MPa, with pressure evenly distributed on the surface of the painting core to avoid damage to the plant materials due to excessive local pressure, and delamination due to insufficient local pressure; Holding time: 8~12 min, to ensure that the primer and plant fibers are fully integrated to form a strong adhesive layer, and at the same time to balance the stress between the plant materials and the base plate, further improving the flatness of the painting and eliminating the risk of subsequent deformation; During the pressing process, an inert gas (such as nitrogen or argon) is introduced into the hot press to isolate the air and prevent the plant materials from oxidizing and discoloring. At the same time, it avoids the generation of water vapor during the pressing process, which would affect the bonding effect and anti-deformation performance. After pressing, the temperature of the hot press is slowly reduced to room temperature (cooling rate 2℃ / h) to avoid excessive temperature difference that could cause the painting core to expand and contract and deform. Then the painting core is removed and the splicing firmness and flatness are checked to ensure that there is no delamination, warping, or air bubbles.

[0031] S5, Double-layer sealing and shaping The pressed painting core is placed in a dust-free workshop, and a layer of base sealant is evenly sprayed using a high-pressure spray gun. The spray thickness is 0.08-0.12 mm. After spraying, it is placed in a constant temperature curing oven and cured at 60-70℃ for 1-1.5 hours until the base sealant is completely cured. The base sealant is an environmentally friendly transparent polyurethane varnish with 0.5%-1% UV stabilizer (UV-531). Its function is to penetrate into the bonding gap between the plant fiber and the base plate, enhance the bonding strength, and form a dense protective layer to prevent moisture and dust from entering, inhibit the moisture absorption and deformation of the plant fiber, and resist ultraviolet radiation to prevent the plant material from fading and becoming brittle. After the base sealant has cured, a top layer of sealant is evenly sprayed using a high-pressure spray gun, with a thickness of 0.15–0.2 mm. During spraying, the spray gun is kept perpendicular to the surface of the painting, with a distance of 30–40 cm to ensure even spraying without drips or bubbles. After spraying, the painting is placed in a constant temperature curing chamber and cured at 55–65℃ for 2–2.5 hours until the top layer of sealant is completely cured. The top layer of sealant is a high-hardness acrylic varnish with 0.3%–0.5% added anti-deformation agent (polymethyl methacrylate). Its function is to form a high-hardness, high-transparency protective film on the surface of the painting, enhancing the wear resistance and impact resistance of the painting, while further fixing the shape of the plant materials and the base plate, inhibiting any slight shrinkage or warping deformation, and ensuring the long-term flatness of the painting. After the double-layer sealant has fully cured, the painting core is removed and allowed to cool naturally to room temperature. The flatness, transparency, and durability of the painting are checked, and unqualified products are rejected. Then, a custom-made sealed frame is used. During framing, a buffer pad (soft sponge pad, 0.5-1mm thick) is placed between the painting core and the frame to prevent excessive framing pressure from deforming the painting core. At the same time, the edges of the frame are sealed to prevent changes in ambient temperature and humidity from affecting the painting core, further improving the overall anti-deformation performance and preservation period. After framing, the painting core is left to stand for 24 hours to ensure the stability of each structure, thus completing the production of the anti-deformation plant mosaic painting.

[0032] For different types of plant materials, this invention allows for flexible adjustment of process parameters to ensure anti-deformation effects. For example, for thin-leaved and petal-type plant materials, the pretreatment soaking time is controlled at 20-25 minutes, the third stage of gradient dehydration is shortened to 5-6 hours, the constant temperature pressing temperature is 70-75°C, the holding time is 8-10 minutes, and the sealing agent spraying thickness is set to the lower limit to avoid damaging the plant materials. For thick-leaved and fruit-shell-type plant materials, the pretreatment soaking time can be extended to 30-40 minutes, the third stage of gradient dehydration is extended to 6-7 hours, the constant temperature pressing temperature is 75-80°C, the holding time is 10-12 minutes, and the sealing agent spraying thickness is set to the upper limit to ensure thorough dehydration and strong adhesion.

[0033] The claims of this invention will be further described in detail below with reference to specific application examples.

[0034] Application Example 1 The steps to create a collage of maple and ginkgo leaves include: S1. Raw material screening and pretreatment: Select intact and undamaged maple and ginkgo leaves, trim and remove excess petioles, rinse with deionized water, and absorb surface moisture with absorbent filter paper; prepare an anti-corrosion and anti-deformation treatment solution (mass percentage: anhydrous ethanol 20%, polyethylene glycol-500 10%, citric acid 3%, magnesium chloride 4%, glycerin 2%, deionized water 61%), immerse the maple and ginkgo leaves in the treatment solution for 25 minutes, stirring once every 10 minutes, remove them, absorb the surface treatment solution, and drain for later use; S2. Gradient Dehydration and Initial Pressing: The treated maple and ginkgo leaves are laid flat on a silicone buffer board, covered with absorbent paper made from virgin wood pulp, and then covered with another silicone buffer board. They are then placed in a constant temperature and humidity pressing device and processed according to the following gradient parameters: First stage (temperature 28℃, pressure 0.15MPa, time 2h); Second stage (temperature 50℃, pressure 0.3MPa, time 3.5h); Third stage (temperature 65℃, pressure 0.45MPa, 5.5h). After the gradient is completed, the leaves are cooled to room temperature at a rate of 3℃ / h, the absorbent paper is removed, and the flat, undeformed leaves are selected for later use. S3. Baseboard Pretreatment and Positioning Assembly: Select a degreased and dried wooden baseboard (4mm thick, 8% moisture content), sand the surface with 400-grit sandpaper, wipe with anhydrous ethanol and let it dry; prepare a primer (50 parts epoxy resin, 5 parts coupling agent KH-550, 8 parts talc powder, 37 parts deionized water), and apply it evenly to the baseboard surface (0.15mm thick), and dry at 55℃ for 35 minutes until cured; according to the drawing, mark the assembly position with removable positioning adhesive, accurately assemble the maple leaves and ginkgo leaves, gently press with tweezers, cover with silicone sheet and let stand for 12 minutes to ensure no air bubbles.

[0035] S4. Integrated constant temperature pressing: The completed picture core is sent into a constant temperature hot press, nitrogen is introduced, and the parameters are set as follows: temperature 72℃, pressure 0.35MPa, pressure holding for 10min; after pressing, it is cooled to room temperature at a rate of 2℃ / h, and then removed for inspection to ensure that there is no delamination or warping. S5. Double-layer sealing and shaping: In a cleanroom, apply a base layer sealant (0.8% UV stabilizer UV-531 + 99.2% polyurethane varnish) with a high-pressure spray gun to a thickness of 0.1mm, and cure at 65℃ for 1.2 hours. After the base layer has cured, apply a top layer sealant (0.4% polymethyl methacrylate + 99.6% acrylic varnish) to a thickness of 0.18mm, and cure at 60℃ for 2.2 hours. After curing, allow it to cool naturally to room temperature, frame it using a sealed frame, place a 0.8mm thick sponge cushioning pad, and let it stand for 24 hours to complete the process. The finished product is as follows: Figure 1 As shown.

[0036] Test results: The flatness deviation of the finished product is 0.08mm. After 24 months of storage at room temperature and 50% humidity, there is no shrinkage, warping, cracking, or delamination. The leaf color is stable and the adhesion is firm. After 6 months of storage at high temperature of 40℃ and high humidity of 80%, there is no obvious deformation.

[0037] Application Example 2 Creating a collage of flower petals and fern leaves involves the following steps: S1. Raw material screening and pretreatment: Select intact and undamaged chrysanthemum petals and fern leaves, trim and arrange them, gently rinse with deionized water, and absorb the surface moisture with absorbent filter paper; prepare an anti-corrosion and anti-deformation treatment solution (mass percentage: anhydrous ethanol 18%, polyethylene glycol 400 9%, citric acid 2.5%, magnesium chloride 3.5%, glycerin 1.5%, deionized water 65.5%), immerse the petals and fern leaves in the treatment solution for 22 minutes, remove them, absorb the surface treatment solution, and drain for later use; S2. Gradient Dehydration and Initial Pressing: The treated petals and fern leaves are laid flat on a silicone buffer plate, covered with absorbent paper made from virgin wood pulp, and then covered with another silicone buffer plate. The plate is then placed in a constant temperature and humidity pressing device and processed according to the following gradient parameters: First stage (temperature 26℃, pressure 0.12 MPa, time 1.8h); Second stage (temperature 48℃, pressure 0.28 MPa, time 3h); Third stage (temperature 62℃, pressure 0.4 MPa, time 5h). After the gradient is completed, the plate is cooled to room temperature at a rate of 3℃ / h. The absorbent paper is removed, and flat, undeformed materials are selected for later use. S3. Baseboard Pretreatment and Positioning Assembly: Select a PVC baseboard (3 mm thick), sand the surface with 500-grit sandpaper, wipe with anhydrous ethanol and let it dry; prepare a primer and apply it evenly to the baseboard surface (0.12 mm thick), dry at 52℃ for 32 minutes until cured; according to the assembly position marked in the artwork, accurately assemble the petals and fern leaves, cover with a silicone sheet and let stand for 10 minutes to ensure that there are no air bubbles or displacements; S4. Integrated constant temperature pressing: The completed picture core is sent into a constant temperature hot press, nitrogen is introduced, and the parameters are set as follows: temperature 76℃, pressure 0.32 MPa, and pressure holding for 9 min; after pressing, it is cooled to room temperature at a rate of 2℃ / h, and then removed for inspection to ensure that there is no delamination or warping. S5. Double-layer sealing and shaping: Spray the base layer sealant (99.4% polyurethane varnish + 0.6% UV-531) to a thickness of 0.09 mm, and cure at 62℃ for 1 hour; after the base layer has cured, spray the top layer sealant (99.7% acrylic varnish + 0.3% polymethyl methacrylate) to a thickness of 0.16 mm, and cure at 58℃ for 2 hours; after curing, allow it to cool naturally, seal and frame it (with a 0.6 mm thick sponge cushioning pad), and let it stand for 24 hours to complete the process. The finished product is as follows. Figure 2 As shown.

[0038] Test results: The flatness deviation of the finished product is 0.07 mm. After being stored for 24 months at room temperature and 55% humidity, there is no shrinkage, warping, cracking, or delamination. The petals and leaves are intact and the color is stable. After being stored for 6 months at high temperature of 40℃ and high humidity of 80%, there is no obvious deformation.

[0039] Application Example 3 Making a thick leaf and walnut shell mosaic involves the following steps: S1. Raw material screening and pretreatment: Select intact and undamaged oak leaves and walnut shells (remove shells and polish smooth), trim and arrange them, rinse them clean with deionized water, and absorb the surface moisture with absorbent filter paper; prepare an anti-corrosion and anti-deformation treatment solution (mass percentage: anhydrous ethanol 22%, polyethylene glycol 600 11%, citric acid 4%, magnesium chloride 5%, glycerin 2.5%, deionized water 55.5%), immerse the oak leaves and walnut shells in the treatment solution for 35 minutes, remove them, absorb the surface treatment solution, and drain for later use; S2. Gradient Dehydration and Initial Pressing: The treated oak leaves and walnut shells are laid flat on a silicone buffer board, covered with absorbent paper made from virgin wood pulp, and then covered with another silicone buffer board. The board is then placed in a constant temperature and humidity pressing device and processed according to the following gradient parameters: First stage (temperature 29℃, pressure 0.18 MPa, time 2.2h); Second stage (temperature 52℃, pressure 0.33 MPa, time 4h); Third stage (temperature 68℃, pressure 0.48 MPa, time 6.5h). After the gradient is completed, the material is cooled to room temperature at a rate of 3℃ / h, the absorbent paper is removed, and the flat, undeformed material is screened for later use. S3. Baseboard Pretreatment and Positioning Assembly: Select an aluminum substrate (5 mm thick), sand the surface with 600-grit sandpaper, wipe with anhydrous ethanol and let it dry; prepare a primer and apply it evenly to the baseboard surface (0.18 mm thick), dry at 58℃ for 38 minutes until cured; according to the assembly position marked on the artwork, accurately assemble the oak leaves and walnut shells, gently press with tweezers, cover with a silicone sheet and let stand for 15 minutes to ensure that there are no air bubbles or displacements; S5. Integrated constant temperature pressing: The completed picture core is sent into a constant temperature hot press, nitrogen is introduced, and the parameters are set as follows: temperature 78℃, pressure 0.38 MPa, and pressure holding for 11 min; after pressing, it is cooled to room temperature at a rate of 2℃ / h, and then removed for inspection to ensure that there is no delamination or warping. S5. Double-layer sealing and shaping: Spray the base layer sealant (99.1% polyurethane varnish + 0.9% UV-531) to a thickness of 0.11 mm, and cure at 68℃ for 1.4 hours. After the base layer has cured, spray the top layer sealant (99.5% acrylic varnish + 0.5% polymethyl methacrylate) to a thickness of 0.19 mm, and cure at 63℃ for 2.4 hours. After curing, allow it to cool naturally, seal it in a frame (with a 0.9 mm thick sponge cushioning pad), and let it stand for 24 hours to complete the process. The finished product is as follows: Figure 3 As shown.

[0040] Test results: The flatness deviation of the finished product is 0.09 mm. After being stored for 24 months at room temperature and 45% humidity, there is no shrinkage, warping, cracking, or delamination, and the material remains intact. After being stored for 6 months at high temperature of 40℃ and high humidity of 80%, there is no obvious deformation.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the present invention.

Claims

1. A process for producing an integrated anti-deformation plant mosaic artwork, characterized in that, Includes the following steps: S1. Raw material screening and anti-deformation pretreatment: Select whole plant materials that are free from mold and damage, trim them to the design size, wash them with deionized water and dry the surface moisture; immerse the plant materials in the anti-corrosion and anti-deformation treatment solution for 20-40 minutes, take them out and dry the excess treatment solution on the surface, and drain them for later use. S2. Gradient dehydration and initial pressing: The pretreated plant material is sandwiched between absorbent paper and silicone buffer plate and placed in a constant temperature and humidity pressing equipment. A three-dimensional gradient dehydration and pressing process is used for dehydration and pressing. After cooling to room temperature, the plant material is taken out and screened to obtain flat and undeformed plant material. S3. Baseboard pretreatment and precise positioning and splicing: Select a baseboard with suitable material, grind the baseboard, wipe it with anhydrous ethanol, apply a layer of primer evenly and let it dry and cure. Then, according to the splicing position marked in the pre-designed drawing, accurately splice the plant materials selected in step S2 onto the baseboard, press and stick them together and let them stand for 10 to 15 minutes. S4. Integrated constant temperature pressing: The completed painting core is sent into a constant temperature hot press, and inert gas is introduced for constant temperature pressing. After pressing, it is slowly cooled to room temperature and the painting core is removed. S5. Double-layer sealing and shaping: In a dust-free environment, the painting core is sealed by spraying a base layer sealant and a top layer sealant in sequence. Then, it is framed in a sealed manner, with a sponge cushioning pad placed between the painting core and the frame to complete the production.

2. The manufacturing process according to claim 1, characterized in that: The components and mass percentages of the anti-corrosion and anti-deformation treatment solution in step S1 are as follows: anhydrous ethanol 15%–25%, polyethylene glycol 8%–12%, citric acid 2%–5%, magnesium chloride 3%–6%, glycerol 1%–3%, and deionized water balance.

3. The manufacturing process according to claim 1, characterized in that: The three-dimensional gradient dehydration and setting process described in step S2 goes through three stages in sequence: the first stage, temperature 25-30℃, pressure 0.1-0.2MPa, time 1.5-2.5h; the second stage, temperature 45-55℃, pressure 0.25-0.35MPa, time 3-4h; the third stage, temperature 60-70℃, pressure 0.4-0.5MPa, time 5-7h; the heating rate in all three stages is 5-8℃ / h; after dehydration and setting, the temperature is reduced to room temperature at a cooling rate of 3-5℃ / h.

4. The manufacturing process according to claim 1, characterized in that: The base plate mentioned in step S3 is made of wood, bamboo, PVC or aluminum substrate, with a thickness of 3 to 5 mm and a moisture content controlled at 6% to 10%.

5. The manufacturing process according to claim 1, characterized in that: The primer in step S3 is prepared by mixing epoxy resin, coupling agent KH-550, talc powder and deionized water in a mass ratio of 50:5:8:

37. The thickness of the primer is 0.1-0.2 mm, the drying and curing temperature is 50-60℃, and the time is 30-40 min.

6. The manufacturing process according to claim 1, characterized in that: In step S3, a thin silicone sheet is placed on the surface of the plant material during the collage process, and the sheet is gently pressed to adhere to the plant material.

7. The manufacturing process according to claim 1, characterized in that: The temperature for constant temperature pressing in step S4 is 70-80℃, the pressure is 0.3-0.4MPa, and the holding time is 8-12min.

8. The manufacturing process according to claim 1, characterized in that: The underlayer sealant in step S5 is a polyurethane varnish with 0.5% to 1% UV stabilizer UV-531 added. The underlayer sealant has a spray thickness of 0.08 to 0.12 mm, a curing temperature of 60 to 70°C, and a curing time of 1 to 1.5 h. The top layer sealant is an acrylic varnish with 0.3% to 0.5% polymethyl methacrylate anti-deformation agent added. The top layer sealant has a spray thickness of 0.15 to 0.2 mm, a curing temperature of 55 to 65°C, and a curing time of 2 to 2.5 h.

9. The manufacturing process according to any one of claims 1-8, characterized in that: The plant material mentioned in step S1 is leaves, petals, stems or fruit shells. For plant materials that are soft and easily curled, an additional preliminary flattening treatment is performed before pretreatment.

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