HIGH-STRENGTH WIND-RESISTANT SKID-RESISTANT WATERPROOF UNDERLAYMENT

Abstract

The present invention relates to the technical field of waterproof materials, and particularly to a high-strength wind-resistant skid-resistant waterproof underlayment. The high-strength wind-resistant skid-resistant waterproof underlayment comprises a first non-woven fabric layer, a first film layer, a first asphalt layer, a gridding cloth layer, a second asphalt layer, a second non-woven fabric layer, a second film layer and a third non-woven fabric layer laminated successively; the first film layer and the second film layer are waterproof elastic films respectively. The object of the present invention is to provide a high-strength wind-resistant skid-resistant waterproof underlayment. The waterproof underlayment formed by structures such as a first film layer and a second film layer and the like can be fixed through nails on a roof made of a wood structure, etc., and the construction is quick, convenient, and labor-saving, and the waterproofness is good.

Claims

1-10. (canceled)

11. An article comprising: a roofing underlayment comprising: a first fabric layer; a first film layer; a first asphalt layer; a felt or gridding cloth layer; a second asphalt layer; a second fabric layer; a second film layer; and a third fabric layer, wherein: at least some of the first fabric layer, the first film layer, the first asphalt layer, the felt or gridding cloth layer, the second asphalt layer, the second fabric layer, the second film layer, and the third fabric layer are laminated in one piece, the first film layer and the second film layer comprise elastic film layers, and the felt or gridding cloth layer is disposed between the first and second asphalt layers.

12. The article of claim 11, wherein one or more of the first fabric layer, the second fabric layer, and the third fabric layer comprise a non-woven fabric.

13. The article of claim 11, wherein the first fabric layer, the second fabric layer, and the third fabric layer are laminated as one piece.

14. The article of claim 11, wherein the elastic film layers comprise waterproof elastic film layers.

15. The article of claim 14, wherein the elastic film layers of the first and second film layers wrap in response to a roofing nail piercing the roofing underlayment.

16. The article of claim 15, wherein the first and second film layers wrap to prevent water penetration due to the piercing of the roofing underlayment.

17. The article of claim 11, further comprising first protruding lines protruding from the first fabric layer, the first protruding lines to increase the surface area per unit area of the first fabric layer.

18. The article of claim 17, wherein the first protruding lines are to increase the friction coefficient of the first fabric layer.

19. The article of claim 17, wherein the first protruding lines are to improve the structural strength of the roofing underlayment.

20. The article of claim 11, wherein the felt or gridding cloth layer comprises gridding cloth.

21. The article of claim 11, wherein the first fabric layer, the first film layer, the first asphalt layer, the felt or gridded cloth layer, the second asphalt layer, the second fabric layer, the second film layer, and the third fabric layer are all laminated in one piece.

22. A method of installing an underlayment on a roof, the method comprising: affixing a bottom surface of the underlayment to a roof structure; laying one or more tiles on a top surface of the underlayment; wherein the underlayment comprises: a first fabric layer; a first film layer; a first asphalt layer; a felt or gridding cloth layer; a second asphalt layer; a second fabric layer; a second film layer; and a third fabric layer, wherein: at least some of the first fabric layer, the first film layer, the first asphalt layer, the felt or gridding cloth layer, the second asphalt layer, the second fabric layer, the second film layer, and the third fabric layer are laminated in one piece, the first film layer and the second film layer comprise elastic film layers, and the felt or gridding cloth layer is disposed between the first and second asphalt layers.

23. The method of claim 22, wherein the felt or gridding cloth layer of the underlayment comprises gridding cloth.

24. The method of claim 22, wherein one or more of the first fabric layer, the second fabric layer, and the third fabric layer of the underlayment comprise a non-woven fabric.

25. The method of claim 22, wherein the elastic film layers, of the first and second film layers of the underlayment, wrap in response to a roofing nail piercing the roofing underlayment to prevent water penetration due to the piercing of the roofing underlayment.

26. The method of claim 22, further comprising first protruding lines protruding from the first fabric layer, the first protruding lines to increase the surface area per unit area of the first fabric layer.

27. The method of claim 26, wherein the first protruding lines are to increase the friction coefficient of the first fabric layer.

28. The method of claim 27, wherein the first protruding lines are arranged as strip shapes or grid forms.

29. The method of claim 22, wherein the first fabric layer, the first film layer, the first asphalt layer, the felt or gridded cloth layer, the second asphalt layer, the second fabric layer, the second film layer, and the third fabric layer of the underlayment are all laminated in one piece.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate technical solutions in embodiments of the present invention or in the prior art, FIGURES which are needed for description of the embodiments or the prior art will be introduced briefly below. Apparently, the FIGURES in the following description show some embodiments of the present invention, and a person ordinarily skilled in the art still can obtain other relevant FIGURES according to these FIGURES, without paying inventive efforts.

[0021] FIG. 1 is a structural schematic diagram of a high-strength wind-resistant skid-resistant waterproof underlayment provided in an example of the present invention.

REFERENCE SIGNS

[0022] 1first non-woven fabric layer; 2first film layer; 3first asphalt layer; 4gridding cloth layer; 5second asphalt layer; 6second non-woven fabric layer; 7second film layer; 8third non-woven fabric layer.

DETAILED DESCRIPTION OF EMBODIMENTS

[0023] Below, the technical solutions of the present invention will be described clearly and completely in conjunction with the FIGURES. Apparently, some but not all of examples of the present invention are described. Based on the examples of the present invention, all the other examples, which can be obtained by a person skilled in the art without paying inventive efforts, fall within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that orientational or positional relationships indicated by terms such as center, upper, lower, left, right, vertical, horizontal, inner, and outer are based on orientational or positional relationships as shown in the FIGURE, merely for facilitating describing the present invention and simplifying the description, rather than indicating or suggesting that related devices or elements have to be in the specific orientation or configured and operated in specific orientation, therefore, they should not be construed as limiting the present invention. Besides, terms first, second, third and so on are merely for descriptive purpose, but should not be understood as indicating or suggesting to have importance in relativity.

[0025] In the description of the present invention, it should be indicated that unless otherwise expressly specified and defined, terms installation, link and connection should be understood widely. For example, it may be a fixed connection, a detachable connection, or an integrated connection; it may be a mechanical connection, or an electrical connection; it may be a direct connection, or an indirect connection through an intermediate medium; and it also may be an inner communication between two elements. For a person ordinarily skilled in the art, the specific meanings of the above-mentioned terms in the present invention can be understood according specific circumstances.

EXAMPLES

[0026] Referring to FIG. 1, the present example provides a high-strength wind-resistant skid-resistant waterproof underlayment. The FIGURE is a structural schematic diagram of the high-strength wind-resistant skid-resistant and waterproof underlayment provided in the example of the present invention, wherein section lines shown in the FIGURE do not intend to show section lines, but for the purpose of more clearly showing a first non-woven fabric layer, a first film layer, a first asphalt layer, a gridding cloth layer, a second asphalt layer, a second non-woven fabric layer, a second film layer and a third non-woven fabric layer.

[0027] Referring to FIG. 1, the high-strength wind-resistant skid-resistant waterproof underlayment provided in the present example comprises successively: a first non-woven fabric layer 1, a first film layer 2, a first asphalt layer 3, a gridding cloth layer 4, a second asphalt layer 5, a second non-woven fabric layer 6, a second film layer 7 and a third non-woven fabric layer 8. That is to say, both outer surfaces of the waterproof underlayment are non-woven fabric layers, i.e., the first non-woven fabric layer 1 and the third non-woven fabric layer 8.

[0028] The first non-woven fabric layer 1, the first film layer 2, the first asphalt layer 3, the gridding cloth layer 4, the second asphalt layer 5, the second non-woven fabric layer 6, the second film layer 7 and the third non-woven fabric layer 8 are laminated as one piece.

[0029] The first film layer 2 and the second film layer 7 are waterproof elastic film layers respectively.

[0030] In the present example, the strong durable gridding cloth layer 4 is used as a felt, providing about 80% of strength of the waterproof underlayment, effectively preventing the waterproof underlayment from deformation due to collision and extrusion by external forces, and improving the impact resistance of the waterproof underlayment; the gridding cloth layer 4 is provided with the first asphalt layer 3 and the second asphalt layer 5 respectively on both surfaces, improving the waterproof performance of both surfaces of the gridding cloth layer 4, and doubly ensuring the waterproof performance of the waterproof underlayment; the non-woven fabric has features of moisture resistance, air permeability, flexibility, light weight, non-combustion-supporting property, high decomposability, non-toxic and non-irritating property, low price, recyclability and reusability, etc., and the process therefor has a short process flow, a quick manufacturing speed, a high yield, low cost and a lot of material sources, which can reduce the cost and the weight of the waterproof underlayment; the non-woven fabric has an excellent skid resistance, a strong resistance to UV, and a strong resistance to ageing, thus, the first non-woven fabric layer 1 on the one hand increases the friction coefficient of the surfaces of the waterproof underlayment, and improves its skid resistance, so that constructors will not likely slip during construction, thereby improving the construction safety at construction sites such as roofs, especially on sloped roofs, and on the other hand improves the UV resistance and ageing resistance of the waterproof underlayment, thereby improving the ageing resistance of the waterproof underlayment; the third non-woven fabric layer 8, with its excellent skid resistance, can be better laid on roofs made of wood structures, etc., helping constructors in construction; the first film layer 2 and the second film layer 7 are used so that, when an external object such as a nail pierces through the waterproof underlayment, the first film layer 2 and the second film layer 7 respectively wrap where is pierced by the external object in an effective way, preventing the waterproof underlayment from water penetration due to piercing by the external object; with the double protection of the first film layer 2 and the second film layer 7, the waterproof underlayment can be fixed on roofs made of wood structures, etc. with nails and the like, and the construction is quick, convenient and firm, without influencing its waterproof performance.

[0031] Specifically, the first non-woven fabric layer 1, the first film layer 2, the first asphalt layer 3, the gridding cloth layer 4, the second asphalt layer 5, the second non-woven fabric layer 6, the second film layer 7 and the third non-woven fabric layer 8 are molded through hot pressing; that is, the first non-woven fabric layer 1, the first film layer 2, the first asphalt layer 3, the gridding cloth layer 4, the second asphalt layer 5, the second non-woven fabric layer 6, the second film layer 7 and the third non-woven fabric layer 8 are hot-pressed into one piece, forming the waterproof underlayment.

[0032] The waterproof elastic film layers in the present example use an existing material, is waterproof, and can form, due to its elasticity, effective wrapping for the position pierced through by an external object when the external object, such as a nail, etc. pierces through the waterproof underlayment, preventing the waterproof underlayment from water penetration due to piercing by the external object; preferably, the waterproof elastic film layers are polyethylene films or polypropylene films, so as to prevent the waterproof underlayment from water penetration when pierced, prolonging the service life, reducing the maintenance cost, and ensuring the overall waterproof performance of the waterproof underlayment.

[0033] The first film layer 2 and the second film layer 7 can be made of a same film layer or different film layers; preferably, the first film layer 2 is a polyethylene film, and the second film layer 7 is a polypropylene film; alternatively, the first film layer 2 is a polypropylene film, and the second film layer 7 is a polyethylene film.

[0034] In an optional solution of the present example, a surface of the first non-woven fabric layer 1 is provided with first protruding lines (not shown in the FIGURE). The first protruding lines protrude from the first non-woven fabric layer 1, so as to increase the surface area per unit area of the first non-woven fabric layer 1, increasing the contact area of the first non-woven fabric layer 1. Meanwhile, the first protruding lines increase the friction coefficient of the first non-woven fabric layer 1, which, on the one hand, increases the friction coefficient of the surface of the waterproof underlayment and improves its skid resistance, so that constructors will not likely slip during construction, thereby improving the construction safety at construction sites such as roofs, particularly sloped roofs, and on the other hand, make the first film layer 2 more firmly connected onto the first non-woven fabric layer 1, preventing the waterproof underlayment from cracks occurring due to external collision, effectively improving the structural strength of the waterproof underlayment, and enhancing the waterproof performance of the waterproof underlayment.

[0035] A surface of the second non-woven fabric layer 6 is provided with second protruding lines (not shown in the FIGURE). The second protruding lines protrude from the second non-woven fabric layer 6, so as to increase the surface area per unit area of the second non-woven fabric layer 6, increasing the contact area of the second non-woven fabric layer 6. Meanwhile, the second protruding lines increase the friction coefficient of the second non-woven fabric layer 6, so that the second asphalt layer 5 and/or the second film layer 7 can be more firmly connected onto the second non-woven fabric layer 6, preventing the waterproof underlayment from cracks occurring due to external collision, effectively improving the structural strength of the waterproof underlayment, and enhancing the waterproof performance of the waterproof underlayment.

[0036] Specifically, the first protruding lines can be provided on one surface of the first non-woven fabric layer 1, or also can be provided on both surfaces of the first non-woven fabric layer 1; preferably, the surface of the first non-woven fabric layer 1 close to the first film layer 2 is provided with the first protruding lines, so as to increase the contact area and the friction coefficient between the first non-woven fabric layer 1 and the first film layer 2; the other surface of the first non-woven fabric layer is relatively smooth, making it easy to lay thereon tiles such as cement tiles, colored clay tiles and asphalt tiles and the like.

[0037] The second protruding lines can be provided on one surface of the second non-woven fabric layer 6, or also can be provided on both surfaces of the second non-woven fabric layer 6; preferably, both surfaces of the second non-woven fabric layer 6 are provided with the second protruding lines, so as to increase the contact areas and the friction coefficients between the second non-woven fabric layer 6 and the second asphalt layer 5 and between the second non-woven fabric layer and the second film layer 7.

[0038] The third protruding lines can be provided on one surface of the third non-woven fabric layer 8, or also can be provided on both surfaces of the third non-woven fabric layer 8; preferably, the surface of the third non-woven fabric layer 8 close to the second film layer 7 is provided with the third protruding lines, so as to increase the contact area and the friction coefficient between the third non-woven fabric layer 8 and the second film layer 7.

[0039] The first protruding lines, the second protruding lines and the third protruding lines respectively can be provided on a part of the surfaces of the first non-woven fabric layer 1, the second non-woven fabric layer 6 and the third non-woven fabric layer 8, or also can be provided on all of their surfaces; the specific distribution conditions of the protruding lines on the surfaces of the non-woven fabric layers depend on factors such as thickness, waterproof performance, cost performance of the waterproof underlayment.

[0040] The first protruding lines, the second protruding lines and the third protruding lines can be arranged to be of irregular shapes or regular shapes, such as strip shapes or grid forms; the first protruding lines, the second protruding lines and the third protruding lines, can be of a same shape or different shapes; preferably, all of the first protruding lines, the second protruding lines and the third protruding lines have a grid form, so as to improve the structural strength of the waterproof underlayment, facilitating producing and processing of the waterproof underlayment.

[0041] The first non-woven fabric layer 1, the second non-woven fabric layer 6 and the third non-woven fabric layer 8 in the present example respectively have a thickness of 0.04-0.06 mm.

[0042] The waterproof elastic film layer in the present example has thickness of 0.06-0.08 mm, that is, the first film layer and the second film layer respectively have a thickness of 0.06-0.08 mm.

[0043] The first asphalt layer 3 and the second asphalt layer 5 in the present example respectively have a thickness of 0.12-0.16 mm.

[0044] In another optional solution of the present example, the first non-woven fabric layer 1, the first film layer 2, the first asphalt layer 3, the gridding cloth layer 4, the second asphalt layer 5, the second non-woven fabric layer 6, the second film layer 7 and the third non-woven fabric layer 8 have a total thickness of 0.5-1.0 mm; using the waterproof underlayment of this thickness not only ensures that the waterproof underlayment has a certain weight, which prevents the waterproof underlayment from being blown away by wind when it is to be laid and results in difficulty in construction, but also ensures that the waterproof underlayment is so light that it can be carried by one person, reducing the labor cost for carrying during the construction.

[0045] Finally, it should be indicated that the above-mentioned examples are merely used to illustrate technical solutions of the present invention, rather than limiting the present invention. While detailed description is made to the present invention with reference to the above-mentioned examples, those ordinarily skilled in the art should understand that the technical solutions of the above-mentioned examples can be modified, or equivalent substitutions can be made to some or all of the technical features thereof; and these modifications or substitutions will not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the examples of the present invention.