NON-WOVEN PROTECTIVE CLOTHING AGAINST BLOOD AND VIRUSES

Abstract

A non-woven protective clothing against blood and viruses, which is composed from: a non-woven fabric layer, which has two surfaces; and a high waterproof moisture-permeable layer, which is a porous film that is laminated to one of the surfaces of the non-woven fabric layer; and an elastic pore filling layer, which is a hydrophilic polyurethane. The elastic pore filling layer is coated or printed onto the surface of the high waterproof moisture-permeable layer, and the thickness of the elastic pore filling layer is thinner than that of the high waterproof moisture-permeable layer. The synthetic blood permeability of the non-woven protective clothing against blood and viruses can resist a pressure of 2.0 psi for one minute, and the Phi-X174 bacteriophage penetrability thereof can resist a pressure of 2.0 psi for one minute.

Claims

1. A non-woven protective clothing against blood and viruses, comprising: a non-woven fabric layer, which has two surfaces, with a basic weight ≤70 g/m.sup.2; a high waterproof moisture-permeable layer, which is a porous film, with a basic weight between 5˜30 g/m.sup.2; the percentage by weight of a powder in the high waterproof moisture-permeable layer is 40˜70%, and the draw ratio thereof is ≤400%; moreover, the average grain diameters in the powder in the high waterproof moisture-permeable layer are 0.5˜3 μm, and calcium carbonate (CaCO.sub.3) is used as the powder, and the high waterproof moisture-permeable layer is laminated to one of the surfaces of the non-woven fabric layer; an elastic pore filling layer, which is a hydrophilic polyurethane that is composed of at least a hydrophilic waterborne polyurethane and a hydrophilic solventborne polyurethane, wherein, the elastic pore filling layer is coated or printed onto the surface of the high waterproof moisture-permeable layer, and the thickness of the elastic pore filling layer is thinner than that of the high waterproof moisture-permeable layer; wherein, the synthetic blood permeability of the non-woven protective clothing against blood and viruses being capable of resisting pressure of 2.0 psi for 1 minute, and the Phi-X174 bacteriophage penetrability thereof being capable of resisting pressure of 2.0 psi for 1 minute.

2. The non-woven protective clothing against blood and viruses according to claim 1, wherein after dispersing the powder, the high waterproof moisture-permeable layer is a drawn porous polyethylene or polypropylene film.

3. The non-woven protective clothing against blood and viruses according to claim 1, wherein the material for the non-woven fabric layer is a selected composition of a hydro-acupuncture non-woven fabric, a needle-punched non-woven fabric, a spun-bonded non-woven fabric, or a melt-blown non-woven fabric.

4. The non-woven protective clothing against blood and viruses according to claim 1, wherein the fiber diameters in the non-woven fabric layer are 0.5˜40 μm.

5. The non-woven protective clothing against blood and viruses according to claim 1, wherein the fiber material in the non-woven fabric layer is at least a polyethylene, polypropylene, polyester, polyvinyl alcohol, rayon, cotton, polyurethane, or a styrene-ethylene and/or butylene-styrene copolymer.

6. The non-woven protective clothing against blood and viruses according to claim 1, wherein the high waterproof moisture-permeable layer is a three layer extruded film with a layer ratio of 1:1:1, 1:2:1, 1:3:1, 1:4:1, or 1:5:1.

7. The non-woven protective clothing against blood and viruses according to claim 1, wherein the thickness ratio of the high waterproof moisture-permeable layer to the elastic pore filling layer is 16:1.5 to 16:3.

8. The non-woven protective clothing against blood and viruses according to claim 1, wherein the high waterproof moisture-permeable layer laminated to the non-woven fabric layer has a moisture permeability between 1500˜7500 g/m.sup.2.Math.24 hr.

9. The non-woven protective clothing against blood and viruses according to claim 1, wherein the non-woven fabric layer has a basic weight of 40˜100 g/m.sup.2 and the moisture permeability of the non-woven fabric layer reaches ≥1500 g/m.sup.2.Math.24 hr.

10. The non-woven protective clothing against blood and viruses according to claim 1, wherein the percentage by weight of the powder in the high waterproof moisture-permeable layer is 40˜60%, and the moisture permeability of the high waterproof moisture-permeable layer reaches ≥1500 g/m.sup.2.Math.24 hr.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 shows a structural view of a first embodiment mode of the present invention.

[0013] FIG. 2 shows a structural view of a second embodiment mode of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The following description uses specific concrete examples to describe the embodiment modes of the present invention. Persons skilled in the related art can easily deduce other advantages and effects of the present invention from the content disclosed in the specification. The present invention can also use other different concrete embodiments to clarify its performance and applications. Each detail described in the specification can also be based on a different perspective and application, enabling various types of modifications and alterations to be carried out without deviating from the spirit of the present invention.

[0015] Referring first to FIG. 1, the present invention provides a non-woven fabric protective clothing against blood and viruses that comprises: a non-woven fabric layer 101, which has two surfaces and a basic weight of ≤70 g/m.sup.2; and a high waterproof moisture-permeable layer 201, which is a porous film with a basic weight between 5˜30 g/m.sup.2. The percentage by weight of a powder 20111 in the high waterproof moisture-permeable layer 201 is 40˜70%, and the draw ratio thereof is ≤400%. The average grain diameters in the powder 20111 in the high waterproof moisture-permeable layer 201 are 0.5˜3 μm, and calcium carbonate (CaCO.sub.3) is used as the powder 20111; moreover, the high waterproof moisture-permeable layer 201 is laminated to one of the surfaces of the non-woven fabric layer 101. In addition, the present embodiment further comprises an elastic pore filling layer 301, which is a hydrophilic polyurethane that uses at least a hydrophilic waterborne polyurethane and a hydrophilic solventborne polyurethane. The elastic pore filling layer 301 is coated or printed onto the surface of the high waterproof moisture-permeable layer 201, and the thickness of the elastic pore filling layer 301 is thinner than that of the high waterproof moisture-permeable layer 201. The present embodiment is characterized in that the synthetic blood permeability of the non-woven fabric protective clothing against blood and viruses can resist a pressure of 2.0 psi for one minute (CNS (China National Standards) 14799), and the Phi-X174 bacteriophage penetrability of the non-woven fabric protective clothing against blood and viruses can resist a pressure of 2.0 psi for one minute (CNS 14800). After dispersing the powder 20111, the high waterproof moisture-permeable layer 201 is a drawn porous polyethylene or polypropylene film. The material for the non-woven fabric layer 101 is a selected composition of a hydro-acupuncture non-woven fabric, a needle-punched non-woven fabric, a spun-bonded non-woven fabric, or a melt-blown non-woven fabric. The fiber diameters in the non-woven fabric layer 101 is 0.5˜40 μm, and fiber material therein is at least a polyethylene, polypropylene, polyester, polyvinyl alcohol, rayon, cotton, polyurethane, or a styrene-ethylene)/butylene-styrene copolymer. The thickness ratio of the high waterproof moisture-permeable layer 201 to the elastic pore filling layer 301 is 16:1.5 to 16:3. Because the elastic pore filling layer 301 is a polyurethane material that forms a non-porous moisture-permeable layer after being printed or coated, it has the function to block viruses. Furthermore, the moisture permeability of the elastic pore filling layer 301 is relatively low compared to the porous structure of the high waterproof moisture-permeable layer 201. Accordingly, the present embodiment controls the film thickness of the high waterproof moisture-permeable layer 201 so as to be greater than the film thickness of the elastic pore filling layer 301, thereby increasing the entire moisture permeability of the non-woven protective clothing against blood and viruses. In addition, cost of the high waterproof moisture-permeable material (polyethylene or polypropylene) of the high waterproof moisture-permeable layer 201 is a lot lower compared to the material of the elastic pore filling layer 301 (polyurethane), thus achieving the prerequisites of providing the beneficial effects of high moisture permeability, resistance against blood and viruses penetration, and saving on costs by matching and proportioning the thicknesses of the high waterproof moisture-permeable layer 201 and the elastic pore filling layer 301. The high waterproof moisture-permeable layer 201 laminated to the non-woven fabric layer 101 has a moisture permeability between 1500˜7500 g/m.sup.2.Math.24 hr (CNS 12222). The non-woven fabric layer 101 has a basic weight 40˜100 g/m.sup.2; and has a moisture permeability that reaches ≥1500 g/m.sup.2.Math.24 hr (CNS 12222). The percentage by weight of the powder 20111 in the high waterproof moisture-permeable layer 201 is 40˜60%, and has a moisture permeability that reaches ≥1500 g/m.sup.2.Math.24 hr (CNS 12222). The average grain diameters in the powder 20111 in the high waterproof moisture-permeable layer 201 are 2 μm, and has a moisture permeability that reaches ≥1500 g/m.sup.2.Math.24 hr (CNS 12222). The non-woven protective clothing against blood and viruses has a moisture permeability that reaches ≥1500 g/m.sup.2.Math.24 hr (CNS 12222). Test results for synthetic blood penetrability of the non-woven protective clothing against blood and viruses of the present embodiment using pressure >13.8 kPa showed no penetration (CNS 14799), and test results for virus penetrability using pressure >13.8 kPa showed no penetration (CNS 14800). In other words, the present embodiment has passed CNS 14798 National Standard P3 grade tests.

[0016] Referring to FIG. 2, which shows a second embodiment of the present invention, which is a non-woven protective clothing against blood and viruses that comprises: the non-woven fabric layer 101, which has two surfaces and a basic weight of 38 g/m.sup.2; and the high waterproof moisture-permeable layer 201, which is a three layer extruded film with a basic weight of 12 g/m.sup.2, wherein the percentage by weight of the powder 20111 in the high waterproof moisture-permeable layer 201 is 55%, and the draw ratio thereof is 400%. The average grain diameters in the powder 20111 in the high waterproof moisture-permeable layer 201 are 2 μm, and calcium carbonate (CaCO.sub.3) is used as the powder 20111; moreover, the high waterproof moisture-permeable layer 201 is laminated to one of the surfaces of the non-woven fabric layer 101, and has a moisture permeability that reaches 5000 g/m.sup.2.Math.24 hr (CNS 12222). In addition, the present embodiment further comprises the elastic pore filling layer 301, which is a hydrophilic polyurethane that is selected from a hydrophilic waterborne polyurethane or a hydrophilic solventborne polyurethane. The elastic pore filling layer 301 is coated or printed onto the surface of the high waterproof moisture-permeable layer 201, and the thickness of the elastic pore filling layer 301 is thinner than that of the high waterproof moisture-permeable layer 201. The present embodiment mode is characterized in that the synthetic blood permeability of the non-woven fabric protective clothing against blood and viruses can resist a pressure of 2.0 psi for one minute (CNS 14799); and the Phi-X174 bacteriophage penetrability thereof can resist a pressure of 2.0 psi for one minute (CNS 14800). The material for the non-woven fabric layer 101 is a selected composition of a hydro-acupuncture non-woven fabric, a needle-punched non-woven fabric, a spun-bonded non-woven fabric, or a melt-blown non-woven fabric, wherein the fiber diameters in the non-woven fabric layer 101 is 10 μm, and the fiber material therein is selected from a polyethylene, polypropylene, polyester, polyvinyl alcohol, rayon, cotton, polyurethane, or a styrene-ethylene/butylene-styrene copolymer. In the present embodiment mode, the high waterproof moisture-permeable layer 201 is a three layer extruded film comprising a first layer co-extruded film 2011, a second layer co-extruded film 2012, and a third layer co-extruded film 2013, with a layer ratio of 1:1:1, 1:2:1, 1:3:1, 1:4:1, or 1:5:1. Accordingly, the present embodiment mode separates the high waterproof moisture-permeable layer 201 into 3 layers, which are drawn after respectively dispersing the powder 20111 therein, creating air-permeable paths between the extended first layer co-extruded film 2011, the second layer co-extruded film 2012, and the third layer co-extruded film 2013, and achieving the effect to prevent virus penetration. The thickness ratio of the high waterproof moisture-permeable layer 201 to the elastic pore filling layer 301 is 16:1.5 to 16:3. The average moisture permeability of the non-woven protective clothing against blood and viruses is 3600 g/m.sup.2.Math.24 hr (CNS 12222). In the present embodiment mode, test results for the synthetic blood penetrability of the non-woven protective clothing against blood and viruses using pressure >13.8 kPa showed no penetration (CNS 14799), and test results for virus penetrability using pressure >13.8 kPa showed no penetration (CNS 14800). In other words, the present invention has passed CNS 14798 National Standard P3 grade tests.

[0017] In another embodiment mode of the present invention, the non-woven protective clothing against blood and viruses comprises: the non-woven fabric layer 101, which has two surfaces and a basic weight of 70 g/m.sup.2; and the high waterproof moisture-permeable layer 201, which is a three layer extruded film with a basic weight of 5 g/m.sup.2, wherein the percentage by weight of the powder 20111 in the high waterproof moisture-permeable layer 201 is 40%, and the draw ratio thereof is 300%. The average grain diameters in the powder 20111 in the high waterproof moisture-permeable layer 201 are 1 μm, and calcium carbonate (CaCO.sub.3) is used as the powder 20111; moreover, the high waterproof moisture-permeable layer 201 is laminated to one of the surfaces of the non-woven fabric layer 101, and has a moisture permeability that reaches 7500 g/m.sup.2.Math.24 hr (CNS 12222). In addition, the present embodiment further comprises the elastic pore filling layer 301, which is a hydrophilic polyurethane that is selected from at least a hydrophilic waterborne polyurethane or a hydrophilic solventborne polyurethane. The elastic pore filling layer 301 is coated or printed onto the surface of the high waterproof moisture-permeable layer 201. The present embodiment mode is characterized in that the synthetic blood permeability of the non-woven fabric protective clothing against blood and viruses can resist a pressure of 2.0 psi for one minute (CNS 14799); and the Phi-X174 bacteriophage penetrability thereof can resist a pressure of 2.0 psi for one minute (CNS 14800). The material for the non-woven fabric layer 101 is a selected composition of a hydro-acupuncture non-woven fabric, a needle-punched non-woven fabric, a spun-bonded non-woven fabric, or a melt-blown non-woven fabric, wherein the fiber diameters in the non-woven fabric layer 101 is 0.5 μm, and the fiber material therein is selected from polyethylene, polypropylene, polyester, polyvinyl alcohol, rayon, cotton, polyurethane, polyester/rayon mixed fibers, polyethylene/rayon mixed fibers, or a styrene-ethylene/butylene-styrene copolymer. In the present embodiment mode, the high waterproof moisture-permeable layer 201 is a three layer extruded film with a layer ratio of 1:1:1, 1:2:1, 1:3:1, 1:4:1, or 1:5:1. The thickness ratio of the high waterproof moisture-permeable layer 201 to the elastic pore filling layer 301 is 16:1.5 to 16:3. The average moisture permeability of the non-woven protective clothing against blood and viruses is 3600 g/m.sup.2.Math.24 hr (CNS 12222). In the present embodiment mode, test results for the synthetic blood penetrability of the non-woven protective clothing against blood and viruses using pressure >13.8 kPa showed no penetration (CNS 14799), and test results for virus penetrability using pressure >13.8 kPa showed no penetration (CNS 14800). In other words, the present invention has passed CNS 14798 National Standard P3 grade tests.

[0018] In another embodiment mode of the present invention, the non-woven protective clothing against blood and viruses comprises: the non-woven fabric layer 101, which has two surfaces and a basic weight of 40 g/m.sup.2; and the high waterproof moisture-permeable layer 201, which is a three layer extruded film with a basic weight of 30 g/m.sup.2, wherein the percentage by weight of the powder 20111 in the high waterproof moisture-permeable layer 201 is 70%, and the draw ratio thereof is 400%. The average grain diameters in the powder 20111 in the high waterproof moisture-permeable layer 201 are 3 μm, and calcium carbonate (CaCO.sub.3) is used as the powder 20111; moreover, the high to waterproof moisture-permeable layer 201 is laminated to one of the surfaces of the non-woven fabric layer 101, and has a moisture permeability that reaches 1500 g/m.sup.2.Math.24 hr (CNS 12222). In addition, the present embodiment further comprises the elastic pore filling layer 301, which is a hydrophilic polyurethane that is selected from at least a is hydrophilic waterborne polyurethane or a hydrophilic solventborne polyurethane. The elastic pore filling layer 301 is coated or printed onto the surface of the high waterproof moisture-permeable layer 201. The present embodiment mode is characterized in that the synthetic blood permeability of the non-woven fabric protective clothing against blood and viruses can resist a pressure of 2.0 psi for one minute (CNS 14799); and the Phi-X174 bacteriophage penetrability thereof can resist a pressure of 2.0 psi for one minute (CNS 14800). The material for the non-woven fabric layer 101 is a selected composition of a hydro-acupuncture non-woven fabric, a needle-punched non-woven fabric, a spun-bonded non-woven fabric, or a melt-blown non-woven fabric, wherein the fiber diameters in the non-woven fabric layer 101 is 40 μm, and the fiber material therein is selected from polyethylene, polypropylene, polyester, polyvinyl alcohol, rayon, cotton, polyurethane, or a styrene-ethylene/butylene-styrene copolymer. In the present embodiment mode, the high waterproof moisture-permeable layer 201 is a three layer extruded film with a layer ratio of 1:1:1, 1:2:1, 1:3:1, 1:4:1, or 1:5:1. The thickness ratio of the high waterproof moisture-permeable layer 201 to the elastic pore filling layer 301 is 16:1.5 to 16:3. The average moisture permeability of the non-woven protective clothing against blood and viruses is 3600 g/m.sup.2.Math.24 hr (CNS 12222). In the present embodiment mode, test results for the synthetic blood penetrability of the non-woven protective clothing against blood and viruses using pressure >13.8 kPa showed no penetration (CNS 14799), and test results for virus penetrability using pressure >13.8 kPa showed no penetration (CNS 14800). In other words, the present invention has passed CNS 14798 National Standard P3 grade tests.

[0019] The present invention provides a non-woven protective clothing against blood and viruses with distinguishing features that include providing a three layer extruded film of the high waterproof moisture-permeable layer 201 on the surface of the non-woven fabric layer 101, and coating or printing the elastic pore filling layer 301 onto the surface of the high waterproof moisture-permeable layer 201, which are able to improve the bend resistance characteristics of the non-woven protective clothing against blood and viruses. The present invention was bent through 180 degrees at least 5000 times, and the bent areas showed no visual signs of cracking. The present invention is distinct and differentiates itself from the prior art; its originality, advancement, and practical effectiveness are unmistakable, and enable effective improvements on the shortcomings of prior art, and, therefore, has considerable practicability in use.

[0020] In conclusion, the concrete structures of the embodiments disclosed above enable the non-woven protective clothing against blood and viruses of the present invention to perform the functions of bend resistance, high water pressure resistance, and high air permeability. The overall structure of the present invention has not been seen in like products, moreover, the contents of this specification have not been publicly disclosed prior to this application, clearly complying with the essential elements as required for a new patent, Accordingly, a patent application is proposed herein.

[0021] It is of course to be understood that the embodiments described herein are merely illustrative of the principles of the invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.