Environment-friendly non-woven composite decorative cloth and preparation process thereof

Abstract

The invention relates to the technical field of plate surface decorative layers, and discloses an environment-friendly non-woven composite decorative fabric which comprises a modified non-woven fabric, a ground color coating is arranged on the upper surface of the modified non-woven fabric, a decorative layer is arranged on the surface of the ground color coating, and the decorative layer is directly formed on the surface of the ground color coating through ink-jet printing. The preparation process of the composite decorative cloth comprises the following steps: S1, preparing the non-woven fabric base layer; s2, non-woven fabric base layer modification treatment; s3, preparing a ground color coating; s4, preparing a decorative layer; and S5, preparing the UV protective layer. The invention has the beneficial effects that the decorative layer is not easy to layer, the quality is stable and controllable, the rolling and transportation are convenient, and the use is more environment-friendly.

Description

Technical Field

[0001] The invention relates to the technical field of decorative sheets, and in particular to an environmentally friendly non-woven composite decorative fabric and a preparation process thereof. Background Art

[0002] In the home furnishing industry, the use of board materials (mainly wood boards) is very large. The most common paint-free board is usually made by hot-pressing a layer of technological veneer on the surface of the board, and then coating the surface of the technological veneer with a layer of decorative paper to make a paint-free board. The technological veneer is made by bonding solid wood veneers with impregnated glue. The formaldehyde content in the impregnated glue is very high. The decorative paper is also called impregnated film paper. The decorative paper is hot-pressed with the technological veneer. Since the impregnated glue content in the technological veneer and decorative paper is very high, the formaldehyde content in the paint-free board is high, which is not environmentally friendly.

[0003] In order to improve the environmental performance of the board, for example, Chinese patent number 2020109209963 discloses a non-woven fabric-based coated paper preparation process, which directly composites the decorative paper with the non-woven fabric for board surface decoration, thereby eliminating the need for technical veneer and improving environmental performance to a certain extent. However, the non-woven fabric itself has a large number of gaps. When the decorative paper is directly connected with glue, the bonding performance between the decorative paper and the non-woven fabric is poor, and the glue easily penetrates the non-woven fabric, resulting in the formation of glue spots, which affects the surface decoration. At the same time, the non-woven fabric has greater elasticity and less decorative elasticity. During transportation, the non-woven fabric is pulled, causing cracks in the decorative paper.

[0004] For example, the Chinese patent number is 2021110423445, which discloses a preparation process of a non-woven fabric that can replace natural veneer. This non-woven fabric increases the connection strength with the decorative paper and can better prevent glue penetration. However, after being used for the surface compound of the board, its quality and decorative effect still cannot reach the effect of the existing paint-free board: the decorative paper is easy to dent after being compressed, and the decorative paper is easy to crack due to tension during transportation. Moreover, the water absorption of the non-woven fabric is much greater than that of the technological veneer. After the board is damp, the decorative paper is easy to swell. Summary of the invention

[0005] In order to solve the above-mentioned problems existing in the prior art when non-woven fabrics are applied to the surface device of a plate, the present invention provides an environmentally friendly non-woven composite decorative fabric and its preparation process, which is not easy to delaminate, has stable and controllable quality, is easy to roll up and transport, and is more environmentally friendly.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: An environmentally friendly nonwoven composite decorative fabric comprises a modified nonwoven fabric, wherein the upper surface of the modified nonwoven fabric is provided with a base color coating, the surface of the base color coating is provided with a decorative layer, and the decorative layer is directly formed on the surface of the base color coating by inkjet printing.

[0007] By adopting the above technical scheme: after the non-woven fabric is modified, a base color coating is directly applied on the surface, and a pattern or wood grain is directly formed on the base color coating by inkjet printing to form a decorative layer, so that the decorative layer and the modified non-woven fabric are not easy to be separated; at the same time, the composite decorative fabric is based on the non-woven fabric base layer, has the flexibility of the non-woven fabric, can be bent and rolled up, and can be rolled up for transportation and storage. The size of the composite decorative fabric can be made larger and the properties of each part are uniform and consistent. When used, the board can be directly hemmed at right angles without cutting; the modified non-woven fabric replaces the technological veneer, and the decorative paper and the bonding operation of the decorative paper and the technological veneer are omitted. The decorative fabric does not contain the impregnated glue in the technological veneer and the decorative paper, and the formaldehyde level reaches the ENF level standard, which is more environmentally friendly when used for composite use of home boards; Preferably, a UV protection layer is provided on the surface of the decorative layer, which protects the decorative layer and plays a role in waterproofing and abrasion resistance.

[0008] Preferably, the lower surface of the modified non-woven fabric is provided with a plurality of concave holes distributed in an array. The concave holes are provided on one side of the modified non-woven fabric. On the one hand, the strength of the lower surface of the modified non-woven fabric is reduced, so that the composite decorative fabric can curl better (with the decorative layer inside) without cracking easily; on the other hand, when the composite decorative fabric is bonded to the board by water-based environmentally friendly glue, these concave holes are filled with environmentally friendly glue, which increases the bonding surface area and improves the bonding strength; thirdly, the sound insulation performance of the board can be increased. When the sound passes through the decorative layer, due to the different components of the environmentally friendly glue in the concave holes and the modified non-woven fabric, when the sound wave is incident from one medium (modified non-woven fabric) to another medium (solidified glue) with different acoustic properties, reflection will occur at the interface between the two media (the hole wall of the concave hole), thereby weakening the penetration of the sound and improving the sound insulation effect.

[0009] Preferably, the concave hole is configured as a spherical concave hole, and the ratio of the depth of the spherical concave hole to the thickness of the modified non-woven fabric is 0.2-0.35. The spherical concave pit causes the sound to be reflected on the spherical surface, thereby reflecting in different directions, further improving the sound insulation effect.

[0010] A preparation process of a composite decorative cloth comprises the following steps: S1. Preparing a non-woven fabric base layer: preparing fibers according to the following weight parts: 5-8 parts of viscose fiber, 7-9 parts of resin fiber, and 3-6 parts of polyester fiber, and mixing, opening, combing, and spunlacing the above fibers to form a non-woven fabric base layer; S2, non-woven fabric base modification treatment: the non-woven fabric base is immersed in the hardened slurry so that the hardened slurry fills the gaps in the non-woven fabric, and then it is squeezed by double rollers and then enters the drying area for drying to form a modified non-woven fabric; S3, preparing a base color coating: rolling a base color slurry on the upper surface of the modified non-woven fabric and scraping it flat, and forming a base color coating after the base color slurry is dried; S4, preparing a decorative layer: printing a preset pattern or texture on the surface of the base color coating by inkjet printing to form a decorative layer; S5. Prepare a UV protective layer: spray a UV protective paint on the surface of the decorative layer, and form a UV protective layer after curing.

[0011] By adopting the above technical scheme: for the surface layer of the board, its flatness requirement is extremely high. The existing high-tech veneer is made by impregnating glue and bonding. It is very hard, difficult to bend, and has low ductility. The non-woven fabric itself is soft, easy to wrinkle, and has high ductility. These characteristics make it impossible to be directly used for board composite; in this structure, by adding polyester fiber, the tensile and wrinkle resistance of the non-woven fabric base layer is greatly improved, and the non-woven fabric base layer is further modified by hardening slurry. The pores of the modified non-woven fabric are filled, the hardness is increased, the hiding power is enhanced, and the water absorption is significantly reduced. The hiding power and surface flatness are further improved by the base color coating, providing a good environment for inkjet printing. Finally, the decorative layer is directly formed by inkjet printing, and the decorative layer is protected by UV protective paint to maintain the long-term decorativeness of the decorative layer.

[0012] Preferably, in step S1, 3-5 parts of bamboo charcoal fiber are also included. The porous characteristics of bamboo charcoal fiber can absorb toxic gases such as formaldehyde. Many boards themselves are not solid wood boards, and many composite boards themselves emit harmful gases such as formaldehyde. When the composite decorative cloth is composited on the surface of these boards, the toxic gases volatilized from the boards will be absorbed by the bamboo charcoal fiber, thereby reducing the volatilization of toxic gases inside the boards and improving environmental protection performance.

[0013] Preferably, the hardened slurry in step S2 includes the following components by weight: 5-8 parts of calcium carbonate powder, 6-10 parts of bamboo pulp fiber, 15-35 parts of adhesive, 0.5-2 parts of coupling agent, and 0.6-1.5 parts of dispersant. Calcium carbonate powder is low in cost and white in color. After the non-woven fabric base is dipped in the hardened slurry, the pores of the non-woven fabric are filled with white slurry to form a modified non-woven fabric. The modified non-woven fabric has enhanced hardness (still meeting the requirements of winding and bending performance), is not easy to wrinkle, and has improved covering properties; bamboo pulp fiber can increase the cracking performance of the hardened slurry after curing, and bamboo pulp fiber can also increase wear resistance and antibacterial properties.

[0014] Preferably, the gram weight of the non-woven fabric base layer in step S1 is 60-150 g / ㎡; in step S2, the gram weight increment of the non-woven fabric base layer after modification is 20-40 g / ㎡, and the thickness of the modified non-woven fabric is 0.25-0.35 mm. During double-roll extrusion, the content of hardened slurry per unit area can be effectively controlled by adjusting the speed, gap, etc., to ensure that the modified non-woven fabric still has the performance of winding and bending under the premise of meeting the hardness and wrinkle resistance, so as to facilitate winding and transportation, and can be continuously operated in the equipment during the subsequent preparation of the base color coating, inkjet printing, and preparation of the UV protective layer.

[0015] Preferably, in step S2, the double rollers are configured into two groups, namely, the first double roller and the second double roller, the first double roller and the second double roller are both cylindrical rollers, wherein the surface of one roller in the second double roller is provided with spherical bosses distributed in an array, and a pre-drying zone is provided between the first double roller and the second double roller; the non-woven fabric base layer dipped in the hardened slurry passes through the first double roller, the pre-drying zone, the second double roller, and the drying zone in turn, and the hardened slurry in the non-woven fabric base layer after passing through the pre-drying zone reaches the basic hardening stage, and then enters the second double roller, and finally reaches the complete hardening stage in the drying zone. Through two double roller rolling, the internal stress of the modified non-woven fabric is better eliminated, and the surface flatness of the modified non-woven fabric is better by passing through the second double roller in the basic hardening stage, and at the same time, the spherical boss on the surface of one roller in the second double roller acts on a single side of the modified non-woven fabric to form a spherical concave hole.

[0016] Preferably, the base color slurry in step S3 includes the following components by weight: 5-12 parts of nano titanium dioxide, 2-4 parts of precipitated barium sulfate powder, 20-28 parts of adhesive, 0.6-1.35 parts of coupling agent, 0.3-0.5 parts of dispersant, and 0.1-0.3 of defoaming agent; after preparing the base color coating, the gram weight increase of the modified non-woven fabric is 10-20g / ㎡. The particle size of nano titanium dioxide is 10-50nm, which makes the base color coating whiter, better in hiding power and smoother, and the color after inkjet printing is more authentic and has a better decorative effect; the particle size of precipitated barium sulfate powder is 200-400nm, and the precipitated barium sulfate powder itself is white. By utilizing the difference in particle size between precipitated barium sulfate powder and nano titanium dioxide, the surface roughness of the final base color coating is greater than that of the surface roughness of nano titanium dioxide alone. This roughness can increase the surface area of ​​inkjet printing, improve the adhesion performance of ink and base color coating, and at the same time, the three-dimensional sense of the inkjet printed pattern is enhanced and the visual effect is better.

[0017] Therefore, the present invention has the following beneficial effects: (1) the composite decorative fabric does not contain formaldehyde and is more environmentally friendly; (2) when the composite decorative fabric is used in combination with an existing board material, it can absorb harmful gases such as formaldehyde volatilized in the board material, thereby improving the environmental protection level of the board material; (3) the physical properties of various parts of the composite decorative fabric are more uniform, and the quality can be more controlled; (4) the composite decorative fabric can be rolled up and folded, which makes transportation more convenient and the size design more flexible; (5) the composite decorative fabric can be rolled up and folded, so it can be continuously and automatically produced on a production line, greatly reducing the manufacturing cost; (6) the composite decorative fabric can be folded, and when it is combined with a board material, the edges and corners can be directly wrapped, eliminating the need for hemming the board material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 for Figure 1 A partial enlarged schematic diagram in the middle.

[0020] Figure 3 It is a preparation flow chart of the present invention. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the scope of protection of the present invention.

[0022] It should be understood that, in this document, the expressions "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance, nor should they be understood as implicitly indicating the number of technical features indicated. Features defined as "first" or "second" may explicitly or implicitly indicate that at least one of the features is included.

[0023] like Figure 1 and Figure 2 An environmentally friendly nonwoven composite decorative fabric shown includes a modified nonwoven fabric 1, a base color coating 2 is provided on the upper surface of the modified nonwoven fabric 1, a decorative layer 3 is provided on the surface of the base color coating 2, and the decorative layer 3 is directly formed on the surface of the base color coating 2 by inkjet printing; a UV protection layer 4 is provided on the surface of the decorative layer 3. A plurality of concave holes 5 distributed in an array are provided on the lower surface of the modified nonwoven fabric 1, and the ratio of the depth of the concave holes to the thickness of the modified nonwoven fabric is 0.25-0.35; in some embodiments, the concave holes 5 are configured as spherical concave holes, and the ratio of the depth of the spherical concave holes to the thickness of the modified nonwoven fabric is 0.3.

[0024] like Figure 3 The preparation process of a composite decorative fabric shown comprises the following steps: S1. Preparation of non-woven fabric base layer: prepare fibers according to the following weight parts: 5-8 parts of viscose fiber, 7-9 parts of resin fiber, and 3-6 parts of polyester fiber, mix the above fibers, open, comb, and spunlace to form a non-woven fabric base layer; S2. Modification of non-woven fabric base layer: immerse the non-woven fabric base layer in hardened slurry so that the hardened slurry fills the gaps in the non-woven fabric, and then enters the drying area for drying through double-roll extrusion to form a modified non-woven fabric 1; S3. Preparation of base color coating: roll the base color slurry on the upper surface of the modified non-woven fabric 1 and scrape it flat, and the base color slurry is dried to form a base color coating 2; S4. Preparation of decorative layer: print a preset pattern or texture on the surface of the base color coating by inkjet printing to form a decorative layer 3; S5. Preparation of UV protective layer: spray UV protective paint on the surface of the decorative layer, and form a UV protective layer 4 after curing.

[0025] Embodiment 1: A preparation process of a composite decorative cloth comprises the following steps: S1. Prepare a non-woven fabric base layer: prepare fibers according to the following weight parts: 5 parts of viscose fiber, 7 parts of resin fiber, and 6 parts of polyester fiber, mix the above fibers, open, card, and spunlace to form a non-woven fabric base layer, and the weight of the prepared non-woven fabric base layer is 60g / ㎡; S2, modification of non-woven fabric base: immerse the non-woven fabric base in hardened slurry, so that the hardened slurry fills the gaps of the non-woven fabric, and then enters the drying area for drying through double-roll extrusion to form a modified non-woven fabric 1; wherein the hardened slurry includes the following components by weight: 5 parts of calcium carbonate powder, 6 parts of bamboo pulp fiber, 15 parts of adhesive, 0.5 parts of coupling agent, and 0.6 parts of dispersant; the gram weight increase of the non-woven fabric base after modification is 20g / ㎡, and the thickness of the modified non-woven fabric is 0.25mm; S3, preparing the base color coating: rolling the base color slurry on the upper surface of the modified non-woven fabric 1 and scraping it flat, and forming the base color coating 2 after the base color slurry is dried, wherein the base color slurry includes the following weight groups: 5 parts of nano titanium dioxide, 2 parts of precipitated barium sulfate powder, 20 parts of adhesive, 0.6 parts of coupling agent, 0.3 parts of dispersant, and 0.1 parts of defoaming agent; after preparing the base color coating, the weight increase of the modified non-woven fabric is 10g / ㎡; that is, the total weight of the modified non-woven fabric is 60g / ㎡; S4, preparing a decorative layer: printing a preset pattern or texture on the surface of the base color coating by inkjet printing to form a decorative layer 3; S5, preparing a UV protective layer: spraying a UV protective paint on the surface of the decorative layer, and forming a UV protective layer 4 after curing.

[0026] Embodiment 2: A preparation process of a composite decorative cloth comprises the following steps: S1. Prepare a non-woven fabric base layer: prepare fibers according to the following weight parts: 8 parts of viscose fiber, 9 parts of resin fiber, 3 parts of polyester fiber, and 5 parts of bamboo charcoal fiber, mix the above fibers, open, card, and spunlace to form a non-woven fabric base layer, and the weight of the obtained non-woven fabric base layer is 150g / ㎡; S2, modification of non-woven fabric base: immerse the non-woven fabric base in hardened slurry, so that the hardened slurry fills the gaps of the non-woven fabric, and then enters the drying area for drying through double-roll extrusion to form a modified non-woven fabric 1; wherein the hardened slurry includes the following components by weight: 8 parts of calcium carbonate powder, 10 parts of bamboo pulp fiber, 35 parts of adhesive, 2 parts of coupling agent, and 1.5 parts of dispersant; the gram weight increase of the non-woven fabric base after modification is 40g / ㎡, and the thickness of the modified non-woven fabric is 0.35mm; S3, preparing the base color coating: rolling the base color slurry on the upper surface of the modified non-woven fabric 1 and scraping it flat, and forming the base color coating 2 after the base color slurry is dried, wherein the base color slurry includes the following weight groups: 12 parts of nano titanium dioxide, 4 parts of precipitated barium sulfate powder, 28 parts of adhesive, 1.35 parts of coupling agent, 0.5 parts of dispersant, and 0.3 of defoaming agent; after preparing the base color coating, the weight increase of the modified non-woven fabric is 20g / ㎡; that is, the total weight of the modified non-woven fabric is 210g / ㎡; S4, preparing a decorative layer: printing a preset pattern or texture on the surface of the base color coating by inkjet printing to form a decorative layer 3; S5, preparing a UV protective layer: spraying a UV protective paint on the surface of the decorative layer, and forming a UV protective layer 4 after curing.

[0027] Embodiment 3: A preparation process of a composite decorative cloth comprises the following steps: S1. Prepare a non-woven fabric base layer: prepare fibers according to the following weight parts: 6 parts of viscose fiber, 8 parts of resin fiber, 5 parts of polyester fiber, and 3 parts of bamboo charcoal fiber, mix the above fibers, open, card, and spunlace to form a non-woven fabric base layer, and the weight of the prepared non-woven fabric base layer is 120g / ㎡; S2. Modification of non-woven fabric base: immerse the non-woven fabric base in hardened slurry so that the hardened slurry fills the gaps of the non-woven fabric, and then enters the drying area for drying through double-roll extrusion to form a modified non-woven fabric 1; wherein the hardened slurry includes the following components in parts by weight: 6 parts of calcium carbonate powder, 8 parts of bamboo pulp fiber, 25 parts of adhesive, 1 part of coupling agent, and 0.9 parts of dispersant; the gram weight increase of the non-woven fabric base after modification is 30g / ㎡, and the thickness of the modified non-woven fabric is 0.30mm; S3, preparing the base color coating: rolling the base color slurry on the upper surface of the modified non-woven fabric 1 and scraping it flat, and forming the base color coating 2 after the base color slurry is dried, wherein the base color slurry includes the following weight groups: 8 parts of nano titanium dioxide, 3 parts of precipitated barium sulfate powder, 24 parts of adhesive, 1 part of coupling agent, 0.4 parts of dispersant, and 0.2 of defoaming agent; after preparing the base color coating, the weight increase of the modified non-woven fabric is 15g / ㎡; that is, the total weight of the modified non-woven fabric is 165g / ㎡; S4, preparing a decorative layer: printing a preset pattern or texture on the surface of the base color coating by inkjet printing to form a decorative layer 3; S5, preparing a UV protective layer: spraying a UV protective paint on the surface of the decorative layer, and forming a UV protective layer 4 after curing.

[0028] Embodiment 4: In step S2, the double rollers are configured into two groups, namely, a first double roller and a second double roller, both of which are cylindrical rollers, wherein the surface of one roller of the second double roller is provided with spherical bosses distributed in an array, and a pre-drying area is provided between the first double roller and the second double roller; The non-woven fabric base layer dipped in the hardened slurry passes through the first double roller, the pre-drying zone, the second double roller, and the drying zone in sequence. The hardened slurry in the non-woven fabric base layer after passing through the pre-drying zone reaches the basic hardening stage, and then enters the second double roller, and finally reaches the complete hardening stage in the drying zone. Spherical concave holes distributed in an array are formed on the lower surface of the modified non-woven fabric after being rolled by the second double roller; the ratio of the depth of the spherical concave holes to the thickness of the modified non-woven fabric is 0.25.

[0029] The remaining steps in this embodiment are the same as those in Embodiment 1.

[0030] Embodiment 5: In step S1, a non-woven fabric base layer is prepared: fibers are prepared according to the following weight parts: 6 parts of viscose fiber, 8 parts of resin fiber, 5 parts of polyester fiber, and 4 parts of bamboo charcoal fiber. The fibers are mixed, loosened, carded, and spunlace to form a non-woven fabric base layer. The weight of the obtained non-woven fabric base layer is 125 g / ㎡; In step S2, the double rollers are configured into two groups, namely, a first double roller and a second double roller, both of which are cylindrical rollers, wherein the surface of one roller of the second double roller is provided with spherical bosses distributed in an array, and a pre-drying area is provided between the first double roller and the second double roller; The non-woven fabric base layer dipped in the hardened slurry passes through the first double roller, the pre-drying zone, the second double roller, and the drying zone in sequence. The hardened slurry in the non-woven fabric base layer after passing through the pre-drying zone reaches the basic hardening stage, and then enters the second double roller, and finally reaches the complete hardening stage in the drying zone. Spherical concave holes distributed in an array are formed on the lower surface of the modified non-woven fabric after being rolled by the second double roller; the ratio of the depth of the spherical concave holes to the thickness of the modified non-woven fabric is 0.35.

[0031] The remaining steps in this embodiment are the same as those in Embodiment 3.

[0032] In the above five embodiments: the adhesive is water-based acrylic resin, the coupling agent is silane coupling agent (kh550), the dispersant is ammonium salt dispersant (for example: polyacrylate ammonium salt dispersant), and the defoamer is mineral oil defoamer (for example: polyether modified silicone oil defoamer); the particle size of nano titanium dioxide is 10-50nm, the particle size of precipitated barium sulfate powder is 200-400nm, and the particle size of calcium carbonate powder is 8-12μm. The above adhesives, coupling agents, dispersants, and defoamers are all purchased directly.

[0033] Comparative Example 1: The decorative layer is directly formed by inkjet printing on the non-woven fabric base layer prepared in Example 3, and then a UV protective paint is sprayed on the surface of the decorative layer, which is cured to form a UV protective layer.

[0034] Comparative Example 2: The decorative layer is directly formed by inkjet printing on the modified non-woven fabric prepared in Example 3, and then a UV protective paint is sprayed on the surface of the decorative layer, which is cured to form a UV protective layer.

[0035] Comparative Example 3: The base color slurry is directly rolled on the non-woven fabric base layer prepared in Example 3 and scraped flat. After the base color slurry is dried, a base color coating is formed. The base color coating is directly inkjet printed to form a decorative layer. After that, UV protective paint is sprayed on the surface of the decorative layer, and a UV protective layer is formed after curing.

[0036] Comparative Example 4: The existing technical veneer and decorative paper (also called coated paper) are combined by impregnation with glue and hot pressing to form a composite technical veneer with decorative effect.

[0037] The composite decorative cloth prepared in Example 1, Example 2, Example 3, Example 4, and Example 5 is overall flat, not easy to wrinkle, has low ductility, high toughness, and is formaldehyde-free. It will not wrinkle even if it is unfolded after being rolled up; the pattern and texture of the decorative layer are clear and complete, and the color is authentic; it will not break when rolled up or bent at right angles, and the decorative layer will be continuous and complete without cracking when bent; it has good overall covering power and is not light-transmitting; the surface UV protective layer has good wear resistance and waterproofness; after being bonded to the board with water-based environmentally friendly glue, the surface is flat and does not bubble, the environmentally friendly glue will not penetrate the composite decorative paper, and there will be no glue spots after the glue solidifies.

[0038] The decorative fabric in Comparative Example 1 is prone to wrinkling after being rolled up and unfolded, and has high ductility. The decorative layer is prone to cracking after stretching; the overall light-shielding property is poor, it is easy to let light through, the pattern of the decorative layer is not clearly printed, and the color is distorted; after being bonded to the board with water-based environmentally friendly glue, the glue directly penetrates the non-woven fabric base layer, and after the glue solidifies, the shadow of the glue spot can be seen from the outside.

[0039] The decorative layer pattern of the decorative cloth in Comparative Example 2 is unclear, the color is slightly distorted, and the overall decorative effect is obviously inferior to that of the composite technological veneer in Comparative Example 4, and cannot meet the use requirements.

[0040] For the decorative cloth in Comparative Example 3, when the base color slurry is roller-coated, a large amount of base color slurry penetrates into the non-woven fabric base layer and is absorbed, resulting in a significant increase in the amount of base color slurry used and increased costs; as the base color slurry is absorbed by the non-woven fabric base layer, the surface of the base color coating becomes uneven, and the pattern of the decorative layer is distorted, and the preset decorative effect cannot be achieved.

[0041] Comparative Example 4 is a composite decorative layer for existing boards. In this type of composite technological veneer, the technological veneer is very hard and cannot be composited with the board and decorative paper using environmentally friendly glue. It must be composited using impregnated glue and hot pressing. The formaldehyde content in the impregnated glue is very high and the environmental performance is poor. In addition, the technological veneer cannot be rolled or bent, and is inconvenient to transport. It is easy to be damaged during transportation, and cannot be directly bent and hemmed when composited with the board.

[0042] In summary, the composite decorative cloth manufactured in Examples 1-5 can be directly used to replace the technical veneer and decorative paper in the prior art, and can be directly compounded with the wooden board through water-based environmentally friendly glue. While meeting the decorative effect, the environmental protection is greatly improved, and the formaldehyde emission level after compounding with the wooden board reaches the ENF level standard; and the composite decorative cloth can be rolled and bent, making processing and transportation more convenient.

[0043] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by up, down, left, right, inside, outside, one end, the other end, etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of more clearly describing the technical solution of the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific orientation, and cannot be understood as a limitation of the present invention.

[0044] Although specific embodiments of the present invention are described in detail herein, they are provided for the purpose of explanation only and should not be considered to limit the scope of the present invention. Various substitutions, changes and modifications may be conceived without departing from the spirit and scope of the present invention.

Claims

1. An environmentally friendly nonwoven composite decorative fabric, Its characteristics are: The modified nonwoven fabric comprises a base color coating on the upper surface of the modified nonwoven fabric, a decorative layer on the surface of the base color coating, and the decorative layer is directly formed on the surface of the base color coating by inkjet printing.

2. The environmentally friendly nonwoven composite decorative fabric according to claim 1, Its characteristics are: A UV protection layer is provided on the surface of the decorative layer.

3. An environmentally friendly nonwoven composite decorative fabric according to claim 1 or 2, Its characteristics are: The lower surface of the modified nonwoven fabric is provided with a plurality of concave holes distributed in an array.

4. The environmentally friendly nonwoven composite decorative fabric according to claim 3, Its characteristics are: The concave holes are configured as spherical concave holes, and the ratio of the depth of the spherical concave holes to the thickness of the modified non-woven fabric is 0.25-0.

35.

5. A process for preparing a composite decorative fabric, applied to the composite decorative fabric according to any one of claims 1 to 4, Its characteristics are: The following steps are involved: S1. Preparing a non-woven fabric base layer: preparing fibers according to the following weight parts: 5-8 parts of viscose fiber, 7-9 parts of resin fiber, and 3-6 parts of polyester fiber, and mixing, opening, combing, and spunlacing the above fibers to form a non-woven fabric base layer; S2, non-woven fabric base modification treatment: the non-woven fabric base is immersed in the hardened slurry so that the hardened slurry fills the gaps in the non-woven fabric, and then it is squeezed by double rollers and then enters the drying area for drying to form a modified non-woven fabric; S3, preparing a base color coating: rolling a base color slurry on the upper surface of the modified non-woven fabric and scraping it flat, and forming a base color coating after the base color slurry is dried; S4, preparing a decorative layer: printing a preset pattern or texture on the surface of the base color coating by inkjet printing to form a decorative layer; S5. Prepare a UV protective layer: spray a UV protective paint on the surface of the decorative layer, and form a UV protective layer after curing.

6. The preparation process of a composite decorative fabric according to claim 5, Its characteristics are: In step S1, 3-5 parts of bamboo charcoal fibers are also included.

7. The preparation process of a composite decorative fabric according to claim 5, Its characteristics are: The hardened slurry in step S2 includes the following components in parts by weight: 5-8 parts of calcium carbonate powder, 6-10 parts of bamboo pulp fibers, 15-35 parts of adhesive, 0.5-2 parts of coupling agent, and 0.6-1.5 parts of dispersant.

8. A process for preparing a composite decorative fabric according to claim 5, 6 or 7, Its characteristics are: The gram weight of the non-woven fabric base layer in step S1 is 60-150 g / ㎡; in step S2, the gram weight increment of the non-woven fabric base layer after modification is 20-40 g / ㎡, and the thickness of the modified non-woven fabric is 0.25-0.35 mm.

9. The process for preparing a composite decorative fabric according to claim 5, Its characteristics are: In step S2, the double rollers are configured into two groups, namely a first double roller and a second double roller, the first double roller and the second double roller are both cylindrical rollers, wherein the surface of one roller of the second double roller is provided with spherical bosses distributed in an array, and a pre-drying area is provided between the first double roller and the second double roller; The non-woven fabric base layer dipped in the hardened slurry passes through the first double roller, the pre-drying zone, the second double roller, and the drying zone in sequence. After passing through the pre-drying zone, the hardened slurry in the non-woven fabric base layer reaches the basic hardening stage, and then enters the second double roller, and finally reaches the complete hardening stage in the drying zone.

10. The preparation process of a composite decorative fabric according to claim 5, Its characteristics are: In step S3, the base color slurry includes the following components by weight: 5-12 parts of nano titanium dioxide, 2-4 parts of precipitated barium sulfate powder, 20-28 parts of adhesive, 0.6-1.35 parts of coupling agent, 0.3-0.5 parts of dispersant, and 0.1-0.3 parts of defoaming agent; After the base color coating is prepared, the weight gain of the modified nonwoven fabric is 10-20 g / ㎡.

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