Antibacterial flame-retardant wall cloth structure

Abstract

The invention discloses an antibacterial flame-retardant wall cloth structure. The antibacterial flame-retardant wall cloth structure comprises a fiber base material, two polyolefin base materials and an antibacterial layer. The two polyolefin base materials are formed on the surfaces of the two sides of the fiber base material to form a sandwich lamination layer. The composition of each polyolefin substrate includes a first polyolefin resin material, a second polyolefin resin material, and a flame retardant additive material. The first polyolefin resin material is polyethylene resin, and the second polyolefin resin material is polypropylene resin and comprises a propylene block copolymer. Based on 100 parts by weight of the polyolefin composition, the content of the propylene block copolymer is at least not less than 5 parts by weight. The antibacterial layer is formed on one side surface of the second polyolefin base material, and the antibacterial layer comprises a fluorine-containing polymer. Therefore, the PVC composite glass fabric layer material can replace the PVC composite glass fabric layer material in the prior art. The antibacterial flame-resistant wall cloth structure has flame resistance and mechanical strength, and the two layers of flame-resistant polyolefin base materials do not use plasticizers or stabilizers.

Description

Technical Field

[0001] The invention relates to a wall cloth structure, in particular to an antibacterial and flame-resistant wall cloth structure. Background Art

[0002] In the prior art, the antifouling and antibacterial plastic wall cloth R is based on a PVC film a (i.e., polyvinyl chloride film). A mesh layer b is arranged on the PVC film a. An ink layer c is printed on the mesh layer b, and an antibacterial layer is coated on the ink layer c to complete the production of the wall cloth.

[0003] However, PVC additives (such as plasticizers and stabilizers) added to PVC film a will gradually release from the film due to changes in temperature and humidity in the environment, which will not only harm the environment and human body, but also may cause the plastic fabric to stain, mold or even peel off. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an antibacterial and flame-resistant wall cloth structure in view of the deficiencies in the prior art.

[0005] In order to solve the above-mentioned technical problems, one of the technical solutions adopted by the present invention is to provide an antibacterial and flame-resistant wall cloth structure, including: a fiber substrate; a first polyolefin substrate formed on one side surface of the fiber substrate; a second polyolefin substrate formed on the other side surface of the fiber substrate; and an antibacterial layer formed on the side surface of the second polyolefin substrate away from the fiber substrate; wherein the antibacterial layer comprises a fluorine-containing polymer.

[0006] The first polyolefin substrate and the second polyolefin substrate are each formed by a polyolefin composition, and the polyolefin composition includes a first polyolefin resin material, a second polyolefin resin material and a flame retardant additive material.

[0007] The first polyolefin resin material is polyethylene resin, the second polyolefin resin material is polypropylene resin, the second polyolefin resin material comprises propylene block copolymer, and the content of the propylene block copolymer is at least not less than 5 parts by weight based on 100 parts by weight of the polyolefin composition.

[0008] Preferably, the material of the fiber substrate is at least one selected from the group consisting of glass fiber, polyester fiber, quartz fiber, carbon fiber and Kevlar fiber.

[0009] Preferably, the fiber substrate is made of glass fiber, the weave of the fiber substrate is plain weave, and the thickness of the fiber substrate is between 150 microns and 200 microns.

[0010] Preferably, the first polyolefin substrate and the second polyolefin substrate do not contain any plasticizer or stabilizer.

[0011] Preferably, the first polyolefin resin material is linear low density polyethylene (LLDPE).

[0012] Preferably, the first polyolefin substrate and the second polyolefin substrate are formed on two opposite side surfaces of the fiber substrate by heat pressing to form a sandwich laminate.

[0013] Preferably, based on 100 parts by weight of the total weight of the polyolefin composition, the content of the first polyolefin resin material is between 30 parts by weight and 60 parts by weight, the content of the second polyolefin resin material is between 30 parts by weight and 60 parts by weight, and the content of the flame retardant additive material is between 1 part by weight and 10 parts by weight.

[0014] Preferably, the second polyolefin resin material comprises: a propylene homopolymer and the propylene block copolymer.

[0015] Preferably, based on 100 parts by weight of the total weight of the polyolefin composition, the content of the propylene homopolymer is between 30 parts by weight and 50 parts by weight, and the content of the propylene block copolymer is between 5 parts by weight and 25 parts by weight.

[0016] Preferably, the propylene block copolymer has a block of a polyolefin elastomer (POE), which is at least one of ethylene propylene diene monomer rubber, ethylene propylene diene monomer rubber and polyisobutylene.

[0017] Preferably, the polyolefin elastomer is EPDM rubber, and the mass proportion of the block of the polyolefin elastomer in the propylene block copolymer is between 5% and 20%.

[0018] Preferably, the flame retardant additive material comprises at least one organic flame retardant, and the organic flame retardant is at least one of a nitrogen-phosphorus flame retardant, a phosphorus flame retardant, a nitrogen flame retardant, a bromine flame retardant and a red phosphorus flame retardant.

[0019] Preferably, the flame retardant additive material further comprises an inorganic flame retardant.

[0020] Preferably, in the antibacterial layer, the fluorine-containing polymer is at least one selected from the group consisting of polyvinylidene fluoride, polytetrafluoroethylene and polyvinyl fluoride.

[0021] Preferably, the thickness of the first polyolefin substrate is between 100 μm and 350 μm, the thickness of the fiber substrate is between 150 μm and 200 μm, the thickness of the second polyolefin substrate is between 100 μm and 350 μm, and the thickness of the antibacterial layer is between 5 μm and 50 μm.

[0022] Preferably, the antibacterial and flame-resistant wall cloth structure further comprises: an ink layer formed on a surface of the antibacterial layer away from the second polyolefin substrate or formed between the second polyolefin substrate and the antibacterial layer.

[0023] The beneficial effect of the present invention is that the antibacterial and flame resistant wall cloth structure of the present invention mainly forms two layers of flame resistant polyolefin substrates (i.e., a first polyolefin substrate and a second polyolefin substrate) on the surfaces of both sides of a fiber substrate to form a sandwich laminate, and forms an antibacterial layer of a fluorine-containing polymer on one surface of the sandwich laminate, and further prints an ink pattern to form an environmentally friendly antibacterial and flame resistant wall cloth structure.

[0024] The antibacterial and flame-resistant wall cloth structure of the present invention can replace the use of PVC composite glass fiber cloth layer materials in the prior art. The antibacterial and flame-resistant wall cloth structure of the present invention not only has flame resistance and mechanical strength, but also the two layers of flame-resistant polyolefin substrates do not need to use plasticizers and stabilizers, thereby solving the problem of plasticizers and stabilizers being released due to environmental changes in the prior art. In the present invention, the flame-resistant additives in the two layers of flame-resistant polyolefin substrates are mainly organic flame retardants and inorganic flame retardants, and the two layers of flame-resistant polyolefin substrates are sandwiched on the fiber substrate, which can achieve excellent flame retardant effects and have better mechanical strength, making the wall cloth structure suitable for outdoor use.

[0025] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the stacking of plastic wall cloth in the prior art.

[0027] Figure 2 It is a schematic diagram of the wall cloth structure according to an embodiment of the present invention.

[0028] Figure 3 It is a schematic diagram of a wall cloth structure according to another embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following is an explanation of the embodiments disclosed in the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. The drawings of the present invention are only simple schematic illustrations and are not depicted according to actual sizes. The following embodiments further describe the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0030] [Antibacterial and flame-resistant wall covering structure]

[0031] See also Figure 2 As shown, an embodiment of the present invention provides an antibacterial and flame-resistant wall covering structure 100. The wall covering structure 100 comprises: a fiber substrate 1, a polyolefin material 2, an antibacterial film layer 3 and an ink layer 4.

[0032] The polyolefin material 2 further comprises: a first polyolefin substrate 21 and a second polyolefin substrate 22. The first polyolefin substrate 21 and the second polyolefin substrate 22 are respectively formed on two opposite side surfaces of the fiber substrate 1. In other words, the fiber substrate 1 is sandwiched between the first polyolefin substrate 21 and the second polyolefin substrate 22.

[0033] In this embodiment, the first polyolefin substrate 21 and the second polyolefin substrate 22 are formed on two opposite side surfaces of the fiber substrate 1 by hot pressing to form a sandwich laminate S.

[0034] Furthermore, the antibacterial layer 3 is formed on one surface of the sandwich laminate S. More specifically, the antibacterial layer 3 is formed on the surface of the second polyolefin substrate 22 which is away from the fiber substrate 1 .

[0035] Furthermore, the ink layer 4 is formed on a surface of the antibacterial layer 3 that is away from the second polyolefin substrate 22 to present a visual pattern or color appearance. However, the formation position of the ink layer 4 is not limited thereto.

[0036] like Figure 3As shown, in another embodiment of the wall cloth structure 100' of the present invention, the ink layer 4 can also be formed between the sandwich laminate S and the antibacterial layer 3, and the antibacterial layer 3 is light-transmissive so that the visual pattern or color appearance of the ink layer 4 can be presented through the antibacterial layer 3.

[0037] It is worth mentioning that in the wall cloth structure 100 of the present embodiment, the sandwich laminate S formed by the fiber substrate 1, the first polyolefin substrate 21 and the second polyolefin substrate 22 has flame resistance (eg, the UL94 flame resistance rating test determines it to be VTM-0) and mechanical strength.

[0038] The wall cloth structure 100 of the embodiment of the present invention can replace the traditional polyvinyl chloride (PVC) composite glass fiber wall cloth, and the first polyolefin substrate 21 and the second polyolefin substrate 22 of this embodiment may not contain plasticizers and stabilizers, thereby solving the problem of plasticizers and stabilizers being released due to environmental changes in the prior art.

[0039] Accordingly, the wall cloth structure 100 of the embodiment of the present invention can reduce the harm to the environment and human body, and can reduce the occurrence of stains, mildew, or peeling of the fabric.

[0040] To achieve the above objectives, possible implementations of the fiber substrate 1, the polyolefin material 2, the antibacterial layer 3 and the ink layer 4 will be described in sequence below.

[0041] In some embodiments of the present invention, the material of the fiber substrate 1 is selected from: glass fiber, polyester fiber, quartz fiber, carbon fiber and Kevlar fiber. At least one of the group of materials consisting of Fiber).

[0042] In a preferred embodiment, the fiber substrate 1 is made of glass fiber.

[0043] In some embodiments of the present invention, the fiber substrate 1 is a woven fabric, and the weave of the fiber substrate 1 is plain weave, twill weave, or satin weave.

[0044] In a preferred embodiment, the weave (structure) of the fiber substrate 1 is plain weave.

[0045] In some embodiments of the present invention, the fiber substrate 1 is made of multiple fibers through false-twist texturing. Furthermore, the diameter of each fiber is between 1 micron and 20 microns, preferably between 4 microns and 13 microns, and particularly preferably between 7 microns and 11 microns.

[0046] Specifically, the thickness of the fiber substrate 1 is between 10 micrometers and 250 micrometers, and preferably between 150 micrometers and 200 micrometers.

[0047] For example, the thickness of the fiber substrate 1 may be 171 micrometers, 172 micrometers, 173 micrometers, 174 micrometers, or 175 micrometers, but the present invention is not limited thereto.

[0048] In some embodiments of the present invention, a warp count of the fiber substrate 1 is 30 to 80, and preferably 30 to 40. Furthermore, a weft count of the fiber substrate 1 is 30 to 80, and preferably 30 to 40.

[0049] The warp density is the number of yarns arranged within one inch in the length direction of the fabric, and the weft density is the number of yarns arranged within one inch in the width direction of the fabric.

[0050] According to the above configuration, the fiber substrate 1 can provide a certain support strength for the wall cloth structure 100, and can have a certain flame resistance and improve the fitting feel of the polyolefin substrate.

[0051] Furthermore, the first polyolefin substrate 21 is formed of a polyolefin composition comprising: a first polyolefin resin material, a second polyolefin resin material and a flame retardant additive material.

[0052] The first polyolefin resin material is polyethylene resin (PE resin), and the polyethylene resin is preferably linear low-density polyethylene (LLDPE).

[0053] In terms of content range, based on 100 parts by weight of the total weight of the polyolefin composition (or based on 100 parts by weight of the total weight of the first polyolefin substrate 21), the content of the first polyolefin resin material (i.e., polyethylene resin) is between 30 parts by weight and 60 parts by weight, and preferably between 35 parts by weight and 55 parts by weight.

[0054] It should be noted that the physical meaning of the unit "part by weight" used in this article is equivalent to "weight percentage" or "weight percentage concentration, wt %", which will not be repeated here.

[0055] The second polyolefin resin material is polypropylene resin (PP resin), and the second polyolefin resin material includes: propylene homopolymer (propylene homo polymer) and propylene block copolymer (propylene block copolymer).

[0056] Specifically, the propylene block copolymer has a block of a polyolefin elastomer (POE), which may be at least one of ethylene-propylene rubber (EPR rubber), ethylene propylene diene monomer (EPDM rubber) and polyisobutylene (PIB).

[0057] In a preferred embodiment, the polyolefin elastomer (POE) is ethylene-propylene-diene rubber (also referred to as ethylene-propylene elastomer). More specifically, the propylene block copolymer is a copolymer of polypropylene (PP) and ethylene-propylene-diene rubber (EPR) (e.g., copolymer of polypropylene blended with EPR), but the present invention is not limited thereto.

[0058] Furthermore, the mass proportion of the polyolefin elastomer (such as EPR) block in the propylene block copolymer may be, for example, between 5% and 20%, and preferably between 10% and 15%, and in a specific embodiment may be 12%.

[0059] Among them, a mass ratio between ethylene (PE) and propylene (PP) in the block of the polyolefin elastomer (such as EPR) can be, for example, 20% to 40%: 60% to 80%, and preferably 25% to 35%: 65% to 75%, and for example 30%: 70%.

[0060] In terms of content range, based on 100 parts by weight of the total weight of the polyolefin composition, the content of the second polyolefin resin material (ie, polypropylene resin) is between 30 parts by weight and 60 parts by weight, and preferably between 35 parts by weight and 55 parts by weight.

[0061] More specifically, in one embodiment, the second polyolefin resin material comprises a propylene homopolymer and a propylene block copolymer. Based on 100 parts by weight of the total weight of the polyolefin composition, the content of the propylene homopolymer is between 30 parts by weight and 50 parts by weight, and preferably between 35 parts by weight and 45 parts by weight.

[0062] In addition, the content of the propylene block copolymer is at least not less than 5 parts by weight, preferably between 5 parts by weight and 25 parts by weight, and particularly preferably between 10 parts by weight and 20 parts by weight.

[0063] Furthermore, the flame retardant additive material contains at least an organic flame retardant, and the organic flame retardant can be, for example, at least one of a nitrogen-phosphorus flame retardant, a phosphorus flame retardant, a nitrogen flame retardant, a bromine flame retardant and a red phosphorus flame retardant, and is preferably a nitrogen-phosphorus flame retardant.

[0064] In some embodiments of the present invention, the flame retardant additive material may further include an inorganic flame retardant, and the inorganic flame retardant may be, for example, at least one of magnesium hydroxide, antimony trioxide and aluminum hydroxide, and is preferably magnesium hydroxide.

[0065] In terms of content range, based on 100 parts by weight of the total weight of the polyolefin composition, the content of the flame retardant additive material is between 1 part by weight and 10 parts by weight, and preferably between 3 parts by weight and 8 parts by weight.

[0066] More specifically, in one embodiment, the flame retardant additive material comprises both an organic flame retardant and an inorganic flame retardant. Based on 100 parts by weight of the total weight of the polyolefin composition, the content of the organic flame retardant is between 1 part by weight and 5 parts by weight, and preferably between 2 parts by weight and 4 parts by weight.

[0067] Furthermore, the content of the inorganic flame retardant is between 3 parts by weight and 8 parts by weight, and preferably between 3 parts by weight and 7 parts by weight. The flame retardant additive material can help to enhance the effect of the wall fabric structure 100, 100' in suppressing or resisting the spread of flames.

[0068] In terms of thickness range, the thickness of the first polyolefin substrate 21 is between 100 μm and 350 μm, preferably between 200 μm and 300 μm, and particularly preferably between 240 μm and 260 μm.

[0069] It is worth mentioning that in the embodiment of the present invention, the polyolefin composition forming the first polyolefin substrate 21 does not contain any plasticizer and stabilizer, especially does not contain plasticizers (such as plasticizers such as DHEH, DHIN, DBP, DEHP) and stabilizers (such as PVC heat stabilizers) used for polyvinyl chloride (PVC) resin.

[0070] Accordingly, in the prior art, the problem of plasticizers and stabilizers being released from the wall covering of PVC composite glass fiber cloth due to environmental changes can be effectively solved.

[0071] Furthermore, similar to the first polyolefin substrate 21, the second polyolefin substrate 22 is also formed of a polyolefin composition. The polyolefin composition includes: a first polyolefin resin material, a second polyolefin resin material and a flame retardant additive material.

[0072] The material characteristics and content ranges of the first polyolefin resin material, the second polyolefin resin material, and the flame retardant additive material are similar to those of the first polyolefin substrate 21 , and are not described in detail herein.

[0073] That is, the first polyolefin substrate 21 and the second polyolefin substrate 22 are each formed of a polyolefin composition, and each includes a first polyolefin resin material, a second polyolefin resin material, and a flame retardant additive material.

[0074] It should be noted that, in the first polyolefin substrate 21 and the second polyolefin substrate 22 , the specific material types and content ranges of the above materials may be the same or slightly different, and the present invention is not limited thereto.

[0075] Or, to put it another way, the wall cloth structure 100 of the embodiment of the present invention includes: two polyolefin substrates 21, 22, which are respectively formed on both sides of the fiber substrate 1 by heat pressing, and each of the polyolefin substrates is formed by a polyolefin composition, and the polyolefin composition includes a first polyolefin resin material, a second polyolefin resin material and a flame retardant additive material.

[0076] In addition, in terms of thickness range, the thickness of the second polyolefin substrate 22 is between 100 micrometers and 350 micrometers, preferably between 200 micrometers and 300 micrometers, and particularly preferably between 240 micrometers and 260 micrometers.

[0077] Please continue reading Figure 2 As shown, the antibacterial layer 3 is formed on one surface of the sandwich laminate S. More specifically, the antibacterial layer 3 is formed on the surface of the second polyolefin substrate 22 which is away from the fiber substrate 1 .

[0078] The antibacterial layer 3 includes at least one fluoropolymer. Based on 100 parts by weight of the total weight of the antibacterial layer 3, the content of the fluoropolymer is at least 70 parts by weight, and preferably between 70 parts by weight and 90 parts by weight.

[0079] The fluorine-containing polymer is at least one selected from the group consisting of polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE) and polyvinyl fluoride (PVF). Preferably, the fluorine-containing polymer is polyvinyl fluoride (PVF).

[0080] In this embodiment, the antibacterial layer 3 is a single-layer structure and has a thickness ranging from 5 to 50 micrometers, and preferably ranging from 10 to 25 micrometers, but the present invention is not limited thereto.

[0081] Furthermore, in an unillustrated embodiment of the present invention, the antibacterial layer 3 further comprises an auxiliary layer and a fluorine-containing polymer layer. The polyolefin substrate (e.g., the first polyolefin substrate 21) is connected to the auxiliary layer or to the fluorine-containing polymer layer. The fluorine-containing polymer layer comprises the fluorine-containing polymer. Based on the total weight of the antibacterial layer 3 being 100 parts by weight, the content of the fluorine-containing polymer is at least 70 parts by weight, and preferably between 70 parts by weight and 90 parts by weight, but the present invention is not limited thereto.

[0082] In addition, the material of the auxiliary layer may be, for example, at least one of poly(methylmethacrylate) (PMMA) and polyurethane (PU).

[0083] Furthermore, the antibacterial layer 3 has a thickness of 5-50 microns, and preferably 10-25 microns. In terms of thickness ratio, the ratio between the auxiliary layer and the fluorine-containing polymer layer is between 1-5:1-5, but the present invention is not limited thereto.

[0084] Please continue reading Figure 2 As shown, the ink layer 4 is formed by printing on the surface of the antibacterial layer 3 away from the second polyolefin substrate 22 to present a visual pattern or color appearance. Figure 3As shown, the ink layer 4 can also be formed between the sandwich laminate S and the antibacterial layer 3, and the antibacterial layer 3 has light transmittance, so that the visual pattern or color appearance of the ink layer 4 can be presented through the antibacterial layer 3. The thickness of the ink layer 4 is between 0.5 microns and 3 microns.

[0085] In one embodiment of the present invention, the material of the ink layer 4 is a water-based resin ink to improve the film-forming property of the ink layer 4 and to be more environmentally friendly, but the present invention is not limited thereto. The material composition of the ink layer 4 is a prior art and is not the focus of the present invention, so it is not described in detail here.

[0086] According to the above configuration, the antibacterial and flame-resistant wall cloth structure 100 of the embodiment of the present invention mainly comprises two layers of flame-resistant polyolefin substrates (i.e., a first polyolefin substrate 21 and a second polyolefin substrate 22) which are hot pressed onto the surfaces on both sides of a fiber substrate 1 to form a sandwich laminate S having flame resistance (UL-94VTM-0) and mechanical strength, and an antibacterial layer 3 of a fluorine-containing polymer is formed on one side surface of the sandwich laminate S, and an ink pattern is further printed to form an environmentally friendly antibacterial and flame-resistant wall cloth structure 100.

[0087] The antibacterial flame-resistant wall cloth structure 100 of the embodiment of the present invention can replace the use of PVC composite glass fiber cloth layer materials in the prior art. The antibacterial flame-resistant wall cloth structure 100 of the embodiment of the present invention not only has certain flame resistance and mechanical strength, but also the two layers of flame-resistant polyolefin substrates (i.e., the first polyolefin substrate 21 and the second polyolefin substrate 22) do not need to use plasticizers and stabilizers, thereby solving the problem of plasticizers and stabilizers being released due to environmental changes in the prior art.

[0088] In an embodiment of the present invention, the flame retardant additives in the two layers of flame retardant polyolefin substrate are mainly organic flame retardants (such as nitrogen-phosphorus flame retardants) and inorganic flame retardants (such as magnesium hydroxide) used in combination, and the two layers of flame retardant polyolefin substrate are sandwiched on a fiber substrate 1 (such as glass fiber), which can achieve excellent flame retardant effects and have better mechanical strength, making the wall cloth structure suitable for outdoor use.

[0089] [Experimental data and test results]

[0090] The present invention will be described in detail below with reference to Examples 1 to 3 and Comparative Example 1.

[0091] Among them, Examples 1 to 3 are groups that can prove the technical effect of the present invention, and Comparative Example 1 is a group with poor conditions and test results.

[0092] <Example 1>: Provide a glass fiber (plain weave, thickness of 173 microns). A first polyolefin substrate and a second polyolefin substrate are hot pressed on both side surfaces of the fiber substrate to form a sandwich laminate. The composition of the first polyolefin substrate includes 42 parts by weight of linear low-density polyethylene (LLDPE), 40 parts by weight of propylene homopolymer, 10 parts by weight of propylene block copolymer (having 12% by mass of EPR block), 3 parts by weight of nitrogen-phosphorus flame retardant, and 5 parts by weight of magnesium hydroxide (inorganic flame retardant). Similarly, the composition of the second polyolefin substrate includes 42 parts by weight of linear low-density polyethylene (LLDPE), 40 parts by weight of propylene homopolymer, 10 parts by weight of propylene block copolymer (having 12% by mass of EPR block), 3 parts by weight of nitrogen-phosphorus flame retardant, and 5 parts by weight of magnesium hydroxide (inorganic flame retardant). Wherein, the thickness of the first polyolefin substrate is 250 microns, and the thickness of the second polyolefin substrate is 250 microns. Further, an antibacterial layer is formed on one side surface of the sandwich laminate (i.e., the side surface of the second polyolefin substrate away from the glass fiber). The antibacterial layer contains 70 parts by weight of polyvinyl fluoride (PVF). The antibacterial layer is a single-layer structure and its thickness is 15 microns. Aqueous resin ink (such as PU aqueous resin ink) is coated on the antibacterial layer and dried to form an ink layer having a thickness of about 1 micron, thereby completing the wall cloth structure of Example 1. In terms of test results, the wall cloth structure provided in Example 1 has better flame retardancy (such as the flame retardancy rating of UL-94VTM-0), hand feel, antibacterial property and brush-drawing property.

[0093] Among them, in the evaluation of the flame retardancy level, VTM-0 means that the combustion stops within 10 seconds on the vertically placed sample, and non-burning particles are allowed to drip. VTM-1 means that the combustion stops within 30 seconds on the vertically placed sample, and non-burning particles are allowed to drip. VTM-2 means that the combustion stops within 30 seconds on the vertically placed sample, and burning particles are allowed to drip.

[0094] <Example 2>: Provide a glass fiber (plain weave, thickness of 173 microns). A first polyolefin substrate and a second polyolefin substrate are hot pressed on both side surfaces of the fiber substrate to form a sandwich laminate. The composition of the first polyolefin substrate includes 42 parts by weight of linear low-density polyethylene (LLDPE), 30 parts by weight of propylene homopolymer, 20 parts by weight of propylene block copolymer (having 12% by mass of EPR block), 3 parts by weight of nitrogen-phosphorus flame retardant and 5 parts by weight of magnesium hydroxide (inorganic flame retardant). Similarly, the composition of the second polyolefin substrate includes 42 parts by weight of linear low-density polyethylene (LLDPE), 30 parts by weight of propylene homopolymer, 20 parts by weight of propylene block copolymer (having 12% by mass of EPR block), 3 parts by weight of nitrogen-phosphorus flame retardant, and 5 parts by weight of magnesium hydroxide (inorganic flame retardant). Wherein, the thickness of the first polyolefin substrate is 250 microns, and the thickness of the second polyolefin substrate is 250 microns. Further, an antibacterial layer is formed on one side surface of the sandwich laminate (i.e., the side surface of the second polyolefin substrate away from the glass fiber). The antibacterial layer contains 70 parts by weight of polyvinyl fluoride (PVF). The antibacterial layer is a single-layer structure and its thickness is 15 microns. Aqueous resin ink (such as PU aqueous resin ink) is coated on the antibacterial layer and dried to form an ink layer having a thickness of about 1 micron, thereby completing the wall cloth structure of Example 2. In terms of test results, the wall cloth structure provided in Example 2 has better flame retardancy (such as the flame retardancy rating of UL-94VTM-0), hand feel, antibacterial property and brush-drawing property.

[0095] <Example 3>: Provide a glass fiber (plain weave, thickness of 173 microns). The first polyolefin substrate and the second polyolefin substrate are hot pressed on the two side surfaces of the fiber substrate to form a sandwich laminate. The composition of the first polyolefin substrate includes 47 parts by weight of linear low-density polyethylene (LLDPE), 40 parts by weight of propylene homopolymer, 10 parts by weight of propylene block copolymer (having 12% by mass of EPR block), 3 parts by weight of nitrogen-phosphorus flame retardant and no inorganic flame retardant. Similarly, the composition of the second polyolefin substrate includes 47 parts by weight of linear low-density polyethylene (LLDPE), 40 parts by weight of propylene homopolymer, 10 parts by weight of propylene block copolymer (having 12% by mass of EPR block), 3 parts by weight of nitrogen-phosphorus flame retardant and no inorganic flame retardant. Wherein, the thickness of the first polyolefin substrate is 250 microns, and the thickness of the second polyolefin substrate is 250 microns. Further, an antibacterial layer is formed on one side surface of the sandwich laminate (i.e., the side surface of the second polyolefin substrate away from the glass fiber). The antibacterial layer contains 70 parts by weight of polyvinyl fluoride (PVF). The antibacterial layer is a single-layer structure and its thickness is 15 microns. Aqueous resin ink (such as PU aqueous resin ink) is coated on the antibacterial layer and dried to form an ink layer having a thickness of about 1 micron, thereby completing the wall cloth structure of Example 3. In terms of test results, the wall cloth structure provided in Example 3 has better flame retardancy (such as the flame retardancy rating of UL-94VTM-1), hand feel, antibacterial property and brush-drawing property.

[0096] <Comparative Example 1> The main difference from the above-mentioned Examples 1 to 3 is that propylene block copolymer and organic flame retardant (such as nitrogen-phosphorus flame retardant) are not used. More specifically, Comparative Example 1 provides a glass fiber (plain weave, 173 microns thick). The first polyolefin substrate and the second polyolefin substrate are hot pressed on both side surfaces of the fiber substrate to form a sandwich laminate. The composition of the first polyolefin substrate includes 45 parts by weight of linear low-density polyethylene (LLDPE), 50 parts by weight of propylene homopolymer and 5 parts by weight of magnesium hydroxide (inorganic flame retardant). The composition of the second polyolefin substrate includes 45 parts by weight of linear low-density polyethylene (LLDPE), 50 parts by weight of propylene homopolymer and 5 parts by weight of magnesium hydroxide (inorganic flame retardant).

[0097] The thickness of the first polyolefin substrate is 250 microns, and the thickness of the second polyolefin substrate is 250 microns. Further, an antibacterial layer is formed on one side surface of the sandwich laminate (i.e., the side surface of the second polyolefin substrate away from the glass fiber). The antibacterial layer contains 70 parts by weight of polyvinyl fluoride (PVF). The antibacterial layer is a single-layer structure and has a thickness of 15 microns. Aqueous resin ink (such as PU aqueous resin ink) is applied on the antibacterial layer and dried to form an ink layer having a thickness of about 1 micron, thereby completing the wall cloth structure of Comparative Example 1.

[0098] In terms of test results, the wall cloth structure provided by Comparative Example 1 has poor flame retardancy (such as the flame retardancy rating of UL-94VTM-2) and poor hand feel.

[0099] It is worth mentioning that since the first and second polyolefin substrates of the above-mentioned embodiments 1 to 3 do not use plasticizers and stabilizers, there will be no problem of plasticizers and stabilizers being released due to environmental changes.

[0100] [Beneficial Effects of Embodiments]

[0101] The beneficial effect of the present invention is that the antibacterial and flame-resistant wall cloth structure 100 of the embodiment of the present invention mainly hot presses two layers of flame-resistant polyolefin substrates (i.e., a first polyolefin substrate 21 and a second polyolefin substrate 22) onto the surfaces on both sides of a fiber substrate 1 to form a sandwich laminate S with flame resistance and mechanical strength, and forms an antibacterial layer 3 of a fluorine-containing polymer on one surface of the sandwich laminate S, and further prints an ink pattern to form an environmentally friendly antibacterial and flame-resistant wall cloth structure 100.

[0102] The antibacterial flame-resistant wall cloth structure 100 of the embodiment of the present invention can replace the use of PVC composite glass fiber cloth layer materials in the prior art. The antibacterial flame-resistant wall cloth structure 100 of the embodiment of the present invention not only has certain flame resistance and mechanical strength, but also the two layers of flame-resistant polyolefin substrates (i.e., the first polyolefin substrate 21 and the second polyolefin substrate 22) do not need to use plasticizers and stabilizers, thereby solving the problem of plasticizers and stabilizers being released due to environmental changes in the prior art.

[0103] In an embodiment of the present invention, the flame retardant additives in the two layers of flame retardant polyolefin substrate are mainly organic flame retardants (such as nitrogen-phosphorus flame retardants) and inorganic flame retardants (such as magnesium hydroxide) used in combination, and the two layers of flame retardant polyolefin substrate are sandwiched on a fiber substrate 1 (such as glass fiber), which can achieve excellent flame retardant effects and have better mechanical strength, making the wall cloth structure suitable for outdoor use.

[0104] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the claims of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention's specification and drawings are included in the claims of the present invention.

Claims

1. An antibacterial and flame-resistant wall cloth structure, characterized in that: The antibacterial and flame-resistant wall cloth structure comprises: a fiber substrate; a first polyolefin substrate formed on one side surface of the fiber substrate; a second polyolefin substrate formed on the other side of the fiber substrate; and an antibacterial layer formed on a surface of the second polyolefin substrate away from the fiber substrate; wherein the antibacterial layer comprises a fluorine-containing polymer; The first polyolefin substrate and the second polyolefin substrate are each formed by a polyolefin composition, and the polyolefin composition comprises: a first polyolefin resin material, a second polyolefin resin material and a flame retardant additive material; The first polyolefin resin material is polyethylene resin, and the second polyolefin resin material is polypropylene resin, which includes propylene block copolymer; and based on 100 parts by weight of the polyolefin composition, the content of the propylene block copolymer is at least not less than 5 parts by weight.

2. The antibacterial and flame-resistant wall cloth structure according to claim 1, characterized in that: The material of the fiber substrate is at least one selected from the group consisting of glass fiber, polyester fiber, quartz fiber, carbon fiber and Kevlar fiber.

3. The antibacterial and flame-resistant wall cloth structure according to claim 2, characterized in that: The material of the fiber substrate is glass fiber, the weave of the fiber substrate is plain weave, and the thickness of the fiber substrate is between 150 microns and 200 microns.

4. The antibacterial and flame-resistant wall cloth structure according to claim 1, characterized in that: The first polyolefin substrate and the second polyolefin substrate do not contain any plasticizer or stabilizer.

5. The antibacterial and flame-resistant wall cloth structure according to claim 1, characterized in that: The first polyolefin resin material is linear low-density polyethylene.

6. The antibacterial and flame-resistant wall cloth structure according to claim 1, characterized in that: The first polyolefin substrate and the second polyolefin substrate are formed on two opposite side surfaces of the fiber substrate by heat pressing to form a sandwich laminate.

7. The antibacterial and flame-resistant wall cloth structure according to claim 1, characterized in that: Based on 100 parts by weight of the total weight of the polyolefin composition, the content of the first polyolefin resin material is between 30 parts by weight and 60 parts by weight, the content of the second polyolefin resin material is between 30 parts by weight and 60 parts by weight, and the content of the flame retardant additive material is between 1 part by weight and 10 parts by weight.

8. The antibacterial and flame-resistant wall cloth structure according to claim 1, characterized in that: The second polyolefin resin material includes: a propylene homopolymer and the propylene block copolymer.

9. The antibacterial and flame-resistant wall cloth structure according to claim 8, characterized in that: Based on 100 parts by weight of the total weight of the polyolefin composition, the content of the propylene homopolymer is between 30 parts by weight and 50 parts by weight, and the content of the propylene block copolymer is between 5 parts by weight and 25 parts by weight.

10. The antibacterial and flame-resistant wall cloth structure according to claim 8, characterized in that: The propylene block copolymer has a block of a polyolefin elastomer, which is at least one of ethylene propylene diene monomer rubber, ethylene propylene diene monomer rubber and polyisobutylene.

11. The antibacterial and flame-resistant wall cloth structure according to claim 10, characterized in that: The polyolefin elastomer is ethylene propylene diene monomer rubber, and the mass proportion of the block of the polyolefin elastomer in the propylene block copolymer is between 5% and 20%.

12. The antibacterial and flame-resistant wall cloth structure according to claim 1, characterized in that: The flame retardant additive material at least includes an organic flame retardant, and the organic flame retardant is at least one of a nitrogen-phosphorus flame retardant, a phosphorus flame retardant, a nitrogen flame retardant, a bromine flame retardant and a red phosphorus flame retardant.

13. The antibacterial and flame-resistant wall cloth structure according to claim 12, characterized in that: The flame retardant additive material further comprises an inorganic flame retardant.

14. The antibacterial and flame-resistant wall cloth structure according to claim 1, characterized in that: In the antibacterial layer, the fluorine-containing polymer is at least one selected from the group consisting of polyvinylidene fluoride, polytetrafluoroethylene and polyvinyl fluoride.

15. The antibacterial and flame-resistant wall cloth structure according to claim 1, characterized in that: The thickness of the first polyolefin substrate is between 100 μm and 350 μm, the thickness of the fiber substrate is between 150 μm and 200 μm, the thickness of the second polyolefin substrate is between 100 μm and 350 μm, and the thickness of the antibacterial layer is between 5 μm and 50 μm.

16. The antibacterial and flame-resistant wall cloth structure according to claim 1, characterized in that: The antibacterial and flame-resistant wall cloth structure further includes: an ink layer formed on a surface of the antibacterial layer away from the second polyolefin substrate or formed between the second polyolefin substrate and the antibacterial layer.

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