Flame-retardant PVC furniture composite film

Abstract

The utility model discloses a flame-retardant PVC (polyvinyl chloride) furniture composite film, which comprises a PVC base material layer provided with a first surface and a second surface which are opposite to each other along the film thickness; the mounting adhesive layer is arranged on the first surface; the flame-retardant layer is arranged on the second surface; the high-temperature-resistant layer is arranged between the PVC base material layer and the flame-retardant layer; the self-repairing layer is arranged on the surface, away from the PVC base material layer, of the flame-retardant layer. The flame-retardant PVC furniture composite film is reasonable in structure, and the flame-retardant performance and the high-temperature resistance of the furniture composite film are enhanced through the flame-retardant layer, the high-temperature-resistant layer and the PVC base material layer which are sequentially stacked from outside to inside; the arrangement of the self-repairing layer not only improves the durability and maintenance convenience of the furniture composite film, but also prevents the flame-retardant effect from being reduced due to the damage of the flame-retardant layer.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture composite films, in particular to a flame-retardant PVC furniture composite film. Background Art

[0002] Decorative film is a new type of decorative material made from high molecular polymer (PVC) as raw material, adding various additives, calendering and compounding. It can be compounded with base materials such as wood, plastic boards, aluminum boards, iron boards to make multi-purpose decorative materials. It is widely used in furniture surface decoration, electrical appliance surface decoration, and interior decoration.

[0003] The addition of plasticizers to PVC film has a negative impact on its original flame retardancy; the temperature resistance range of PVC film is narrow, and it is easy to soften and deform at high temperatures, affecting its service life; the surface of PVC film is easy to wear, which also shortens its service life.

[0004] Therefore, it is necessary to improve the flame retardant PVC furniture composite film in the prior art. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects existing in the prior art and provide a flame-retardant PVC furniture composite film, which enhances the flame retardant performance and high temperature resistance of the furniture composite film by stacking a flame retardant layer, a high temperature resistant layer and a PVC base material layer in sequence from the outside to the inside; the provision of a self-repairing layer not only improves the durability and ease of maintenance of the furniture composite film, but also prevents damage to the flame retardant layer and reduces the flame retardant effect.

[0006] In order to achieve the above technical effects, the technical solution of the utility model is: a flame retardant PVC furniture composite film, comprising:

[0007] The PVC substrate layer has a first surface and a second surface opposite to each other along the thickness of the film;

[0008] An installation adhesive layer is provided on the first surface;

[0009] Also includes a flame retardant layer, disposed on the second surface;

[0010] A high temperature resistant layer is provided between the PVC base material layer and the flame retardant layer;

[0011] The self-repairing layer is arranged on the surface of the flame retardant layer away from the PVC base material layer.

[0012] The preferred technical solution is that the PVC substrate layer is a laminated structure of anti-ultraviolet layer / reinforcement layer / anti-oxidation layer, or anti-ultraviolet layer / reinforcement layer / anti-ultraviolet layer, or anti-oxidation layer / reinforcement layer / anti-oxidation layer.

[0013] A preferred technical solution is that the flame retardant layer is made of polycarbonate.

[0014] A preferred technical solution is that the high temperature resistant layer is a thermoplastic polyurethane layer.

[0015] A preferred technical solution is that the self-repairing layer is an acrylic modified polyurethane resin layer.

[0016] The preferred technical solution is that the flame retardant layer and the high temperature resistant layer, and the high temperature resistant layer and the PVC substrate layer are connected by an adhesive layer, and the adhesive layer is one of a polyurethane adhesive layer, an acrylate adhesive layer and an organic silicone adhesive layer.

[0017] A preferred technical solution is that one of the adhesive layers is an anti-ultraviolet adhesive layer, and the other is a heat-insulating adhesive layer.

[0018] A preferred technical solution is that the bonding surface of the mounting adhesive layer is provided with a recessed portion, and gas adsorption adhesive is provided in the recessed portion.

[0019] A preferred technical solution is that connecting grooves are provided between the recessed portions, and the connecting grooves are provided with gas adsorption glue.

[0020] A preferred technical solution is that there is a micro gap between the plane where the gas adsorption glue is filled and the bonding surface.

[0021] The advantages and beneficial effects of the utility model are:

[0022] The flame-retardant PVC furniture composite film has a reasonable structure. By stacking the flame-retardant layer, high-temperature resistant layer and PVC base material layer in sequence from the outside to the inside, it not only enhances the flame-retardant performance of the furniture composite film, but also improves the defect of the narrow temperature resistance range of the PVC base material layer, thereby increasing the service life and broadening the application scenarios. The setting of the self-repairing layer not only improves the durability and ease of maintenance of the furniture composite film, but also prevents the damage of the flame-retardant layer from reducing the flame-retardant effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of Example 1 of the flame-retardant PVC furniture composite film of the present invention;

[0024] Figure 2 This is a structural diagram of Example 2 of the flame-retardant PVC furniture composite film of the present invention;

[0025] Figure 3 It is a schematic diagram of the bonding surface structure of the adhesive layer installed in the furniture composite film.

[0026] In the figure: 1. PVC substrate; 2. High temperature resistant layer; 3. Flame retardant layer; 4. Self-repairing layer; 5. Installation adhesive layer; 6. Protective film; 7. Release film; 11. Thermal insulation adhesive layer; 12. Anti-ultraviolet adhesive layer; 50. Recessed portion; 51. Connecting groove; 500. Adhesive surface. DETAILED DESCRIPTION

[0027] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0028] The “surface” is based on the flame-retardant PVC furniture composite film in normal use state and is only used to facilitate the description of the present invention and simplify the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention.

[0029] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0030] like Figures 1-3 As shown, the flame-retardant PVC furniture composite film of the present invention includes a PVC substrate layer 1, an installation adhesive layer 5, a flame-retardant layer 3, a high-temperature resistant layer 2, and a self-repairing layer 4. The PVC substrate layer 1 has a first surface (unlabeled) and a second surface (unlabeled) that are opposite to each other along the film thickness. The installation adhesive layer 5 is disposed on the first surface, the flame-retardant layer 3 is disposed on the second surface, the high-temperature resistant layer 2 is disposed between the PVC substrate layer 1 and the flame-retardant layer 3, and the self-repairing layer 4 is disposed on the surface of the flame-retardant layer 3 away from the PVC substrate layer 1. A release film 7 is disposed on the surface of the installation adhesive layer 5 away from the PVC substrate layer 1, and a protective film 6 is disposed on the surface of the self-repairing layer 4 away from the PVC substrate layer 1.

[0031] By stacking the flame retardant layer 3, the high temperature resistant layer 2 and the PVC base material layer 1 in sequence from the outside to the inside, not only the flame retardant performance of the furniture composite film is enhanced, but also the defect of the narrow temperature resistance range of the PVC base material 1 is improved, the service life is increased and the application scenarios are broadened; the setting of the self-repairing layer 4 not only improves the durability and maintenance ease of the furniture composite film, but also prevents the damage of the flame retardant layer 4 from reducing the flame retardant effect.

[0032] In some embodiments, the PVC substrate layer 1 comprises a laminated structure of an anti-UV layer, a reinforcing layer, and an antioxidant layer. The anti-UV layer is primarily formed by adding an ultraviolet absorber to PVC particles. The reinforcing layer is primarily formed by adding nano-calcium carbonate to PVC particles. The antioxidant layer is primarily formed by adding an antioxidant to PVC particles.

[0033] In some embodiments, the PVC substrate layer 1 is a laminated structure of an anti-ultraviolet layer / a reinforcement layer / an anti-ultraviolet layer.

[0034] In some embodiments, the PVC substrate layer 1 is a laminated structure of an anti-oxidation layer / a reinforcement layer / an anti-oxidation layer.

[0035] The flame-retardant layer 3 is made of polycarbonate. Polycarbonate (PC) has excellent transparency, approaching that of glass, and can achieve a light transmittance of over 90%. As the outer layer of the flame-retardant composite layer, it ensures optimal transparency and light transmittance for the furniture composite film. Because PC's molecular structure contains a large number of aromatic groups, these groups form a carbonized layer during combustion, providing heat and oxygen insulation, thereby slowing the combustion process. This layer also acts as a barrier, preventing flames from directly contacting the PVC substrate layer, which can produce more smoke and harmful gases when burning.

[0036] The high-temperature-resistant layer 2 is a thermoplastic polyurethane layer. One drawback of PVC is its tendency to soften at high temperatures. Thermoplastic polyurethane (TPU) has excellent heat resistance, so the TPU / PVC composite layer improves the heat resistance of the PVC substrate layer. TPU offers excellent abrasion resistance, tear resistance, and good elastic recovery. When laminated with the PVC substrate layer, it enhances the mechanical strength and toughness of the furniture composite film, improving its performance under external forces such as stretching and impact. TPU is resistant to many chemicals, including oils and solvents. When laminated with the PVC substrate layer, it improves its chemical resistance, especially against certain solvents that may soften or swell PVC. TPU itself also has certain flame retardant properties, contributing to a safer composite layer. TPU also offers superior aging resistance to PVC, especially when used outdoors, offering better resistance to UV rays and other environmental factors. This results in a composite layer with greater durability and a longer service life.

[0037] The self-repairing layer 4 is an acrylic-modified polyurethane resin layer. It contains microcapsules. When damaged, the microcapsules rupture, releasing a repair agent that fills the damaged area and resolidifies, thus achieving self-repair. Alternatively, the resin contains dynamic covalent bonds that break upon damage and reform under appropriate conditions, thus achieving self-repair.

[0038] The flame-retardant layer 3 and the high-temperature-resistant layer 2, as well as the high-temperature-resistant layer 2 and the PVC substrate layer 1, are connected by adhesive layers, which are selected from the group consisting of polyurethane adhesive, acrylate adhesive, and silicone adhesive. Polyurethane adhesive is a very versatile adhesive that provides excellent bonding strength and flexibility. It also offers good weather resistance and chemical resistance. Acrylate adhesives cure quickly and provide excellent bonding strength, have good adhesion to most plastics, and exhibit good transparency and weather resistance. Silicone adhesives offer excellent high and low temperature resistance, as well as good electrical insulation properties, and possess good elasticity and flexibility.

[0039] In order to improve the anti-ultraviolet performance and heat insulation performance of the furniture composite film, one of the adhesive layers is an anti-ultraviolet adhesive layer 12 and the other is a heat insulation adhesive layer 11.

[0040] In order to improve the adsorption of formaldehyde in wooden furniture, the adhesive surface 500 of the mounting adhesive layer 5 is provided with a recessed portion 50, and gas adsorption adhesive is provided in the recessed portion 50. The gas adsorption adhesive is prepared by adding nano-activated carbon to the adhesive to increase the specific surface area and optimize the adsorption effect.

[0041] Communication grooves 51 are provided between the recessed portions 50, and gas adsorption glue is provided in the communication grooves 51. The provision of the communication grooves 51 increases the area for gas adsorption and optimizes the coating of the gas adsorption glue.

[0042] In order to form an air guide channel and prevent bubbles from being generated when the furniture composite film is attached to the furniture surface, which affects the appearance, flatness and clarity, a micro gap is provided between the plane where the gas adsorption glue is filled and the bonding surface 500.

[0043] Example 1

[0044] like Figure 1 As shown, the flame-retardant PVC furniture composite film includes a PVC substrate layer 1, an installation adhesive layer 5, a flame-retardant layer 3, a high-temperature resistant layer 2, and a self-repairing layer 4. The PVC substrate layer 1 has a first surface (unlabeled) and a second surface (unlabeled) that are opposite each other along the film thickness. The installation adhesive layer 5 is disposed on the first surface, the flame-retardant layer 3 is disposed on the second surface, the high-temperature resistant layer 2 is disposed between the PVC substrate layer 1 and the flame-retardant layer 3, and the self-repairing layer 4 is disposed on the surface of the flame-retardant layer 3 away from the PVC substrate layer 1. A release film 7 is disposed on the surface of the installation adhesive layer 5 away from the PVC substrate layer 1, and a protective film 6 is disposed on the surface of the self-repairing layer 4 away from the PVC substrate layer 1.

[0045] The PVC substrate layer 1 comprises a laminated structure consisting of a UV-resistant layer, a reinforcement layer, and an antioxidant layer. The flame-retardant layer 3 and the high-temperature-resistant layer 2, as well as the high-temperature-resistant layer 2 and the PVC substrate layer 1, are connected by adhesive layers made of polyurethane. One of the adhesive layers is a UV-resistant adhesive layer 12, and the other is a thermal insulation adhesive layer 11.

[0046] Example 2

[0047] like Figures 2 and 3 As shown, Example 2 is based on Example 1, but differs in that the adhesive surface 500 of the mounting adhesive layer 5 is provided with recessed portions 50, within which gas adsorbent adhesive is disposed. Connecting grooves 51 are provided between the recessed portions 50, each containing gas adsorbent adhesive. A micro-gap exists between the plane where the gas adsorbent adhesive is filled and the adhesive surface 500.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A flame-retardant PVC furniture composite film, comprising: The PVC substrate layer has a first surface and a second surface opposite to each other along the thickness of the film; An installation adhesive layer is provided on the first surface; It is characterized by further comprising a flame retardant layer, which is arranged on the second surface; A high temperature resistant layer is provided between the PVC base material layer and the flame retardant layer; The self-repairing layer is arranged on the surface of the flame retardant layer away from the PVC base material layer.

2. The flame-retardant PVC furniture composite film according to claim 1, characterized in that: The PVC substrate layer is a laminated structure of an anti-ultraviolet layer / reinforcement layer / anti-oxidation layer, or an anti-ultraviolet layer / reinforcement layer / anti-ultraviolet layer, or an anti-oxidation layer / reinforcement layer / anti-oxidation layer.

3. The flame-retardant PVC furniture composite film according to claim 1 or 2, characterized in that: The flame retardant layer is made of polycarbonate.

4. The flame-retardant PVC furniture composite film according to claim 1 or 2, characterized in that: The high temperature resistant layer is a thermoplastic polyurethane layer.

5. The flame-retardant PVC furniture composite film according to claim 1 or 2, characterized in that: The self-repairing layer is an acrylic acid modified polyurethane resin layer.

6. The flame-retardant PVC furniture composite film according to claim 1, characterized in that: The flame retardant layer and the high temperature resistant layer, as well as the high temperature resistant layer and the PVC base material layer are connected by an adhesive layer, and the adhesive layer is one of a polyurethane adhesive layer, an acrylate adhesive layer and an organic silicone adhesive layer.

7. The flame-retardant PVC furniture composite film according to claim 6, characterized in that: One of the adhesive layers is an anti-ultraviolet adhesive layer, and the other is a heat-insulating adhesive layer.

8. The flame-retardant PVC furniture composite film according to claim 1, characterized in that: The bonding surface of the installation adhesive layer is provided with a recessed portion, and the recessed portion is provided with gas adsorption adhesive.

9. The flame-retardant PVC furniture composite film according to claim 8, characterized in that: Communication grooves are provided between the recessed parts, and the communication grooves are provided with gas adsorption glue.

10. The flame-retardant PVC furniture composite film according to claim 9, characterized in that: There is a micro gap between the plane where the gas adsorption glue is filled and the bonding surface.

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