CN215551445U

CN215551445U - Waterproof polyurethane composite film

Info

Publication number: CN215551445U
Application number: CN202120611197.8U
Authority: CN
Inventors: 王学彬
Original assignee: Non Pharmaceutical Technology Qingdao Co ltd
Current assignee: Jiangsu Bosi Information Technology Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2022-01-18
Anticipated expiration: 2031-03-25

Abstract

The utility model provides a waterproof polyurethane composite film which comprises a first non-woven fabric, a first polyurethane spraying film layer, a second polyurethane spraying film layer and a second non-woven fabric, wherein the first polyurethane spraying film layer is arranged on one side of the first non-woven fabric, the second polyurethane spraying film layer is arranged on one side of the second non-woven fabric, a decorative layer is arranged on one side, away from the first polyurethane spraying film layer, of the first non-woven fabric, and a protective layer is arranged on one side, away from the second polyurethane spraying film layer, of the second non-woven fabric. The utility model can improve the waterproof performance and strength of the composite membrane, so as to solve the problems that the existing waterproof membrane has poor waterproofness and is easy to damage.

Description

Waterproof polyurethane composite film

Technical Field

The utility model relates to the technical field of waterproof membranes, in particular to a waterproof polyurethane composite membrane.

Background

The in-process of current waterproof wrapping bag in the design, in order to realize reaching waterproof effect, set up the wrapping bag into the structure of double-deck polyethylene membrane usually, double-deck project organization can prolong the time that water permeates the membrane, waterproof purpose has been reached in the certain time, but be not suitable for in some fields that need carry on waterproofly for a long time, for example in dehumidification bag field, the dehumidification bag generally uses more than ten days at least, consequently, the holding time requirement to the waterproof performance of dehumidification bag is very strict, the waterproof performance of current waterproof membrane is relatively poor, the tensile strength of same current waterproof membrane is also lower, can only guarantee one of them orientation in violently indulge two directions and possess certain tensile strength, be torn easily when stretching in another direction, local damage appears easily in practical application and leads to the problem of leaking.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a waterproof polyurethane composite film, which can improve the waterproof performance and strength of the composite film so as to solve the problems that the existing waterproof film is not good enough in waterproof performance and is easy to damage.

In order to achieve the purpose, the utility model is realized by the following technical scheme: a waterproof polyurethane composite film comprises a first non-woven fabric, a first polyurethane spraying film layer, a second polyurethane spraying film layer and a second non-woven fabric, wherein the first polyurethane spraying film layer is arranged on one side of the first non-woven fabric;

first polyurethane drenches the rete and is provided with a plurality of first lines that are parallel to each other along its length direction, is provided with first interval between a plurality of first lines, second polyurethane drenches the rete and is provided with a plurality of second lines that are parallel to each other along its length direction, is provided with first interval between a plurality of second lines, the width of first line, the width of second line and the width of first interval are all the same, the thickness of first line is the same with the thickness of second line.

Further, the thickness of the first polyurethane laminating layer and the second polyurethane laminating layer is 30-100 um.

Further, the thickness of first line and second line is 10um-50um, the width of first line, second line and first interval is 0.2mm-0.5 mm.

Furthermore, the decorative layer is printed with decorative patterns, and the protective layer is printed by waterproof paint.

Further, the first non-woven fabric and the second non-woven fabric respectively comprise a plurality of transverse strands and longitudinal strands which are perpendicular to each other, the static friction coefficient of the first non-woven fabric is 0.3-0.4, and the static friction coefficient of the second non-woven fabric is 0.1-0.3.

The utility model has the beneficial effects that: the utility model has the first lines on the first polyurethane film layer, the second lines on the second polyurethane film layer, and when in lamination, the first grains and the second grains are laminated in a staggered way, so that the bonding contact area of the first polyurethane laminating layer and the second polyurethane laminating layer can be increased, the bonding strength of the double-layer film is improved, thereby effectively avoiding water from permeating between the first polyurethane laminating layer and the second polyurethane laminating layer during water proofing, improving the combined waterproof effect of the first polyurethane laminating layer and the second polyurethane laminating layer, meanwhile, the first texture and the second texture are arranged, so that the transverse bonding force can be improved during pressing, thereby improve first polyurethane and drench the whole tensile strength in horizontal and vertical with the second polyurethane and drench the rete, cooperate first non-woven fabrics and second non-woven fabrics and can further improve the holistic tensile strength of complex film.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of a polyurethane composite film;

FIG. 2 is a schematic structural diagram of a first polyurethane laminating layer;

fig. 3 is a schematic connection diagram of the first polyurethane laminating layer and the second polyurethane laminating layer.

In the figure: 1. a first nonwoven fabric; 11. a first polyurethane laminating layer; 111. a first texture; 2. a second nonwoven fabric; 21. a second polyurethane laminating layer; 211. and (7) second textures.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

Referring to fig. 1 to 3, a waterproof polyurethane composite film includes a first nonwoven fabric 1, a first polyurethane film layer 11, a second polyurethane film layer 21 and a second nonwoven fabric 2, wherein the first polyurethane film layer 11 is disposed on one side of the first nonwoven fabric 1, the second polyurethane film layer 21 is disposed on one side of the second nonwoven fabric 2, a decorative layer is disposed on one side of the first nonwoven fabric 1 away from the first polyurethane film layer 11, and a protective layer is disposed on one side of the second nonwoven fabric 2 away from the second polyurethane film layer 21.

First polyurethane drenches rete 11 and is provided with a plurality of first lines 111 that are parallel to each other along its length direction, be provided with first interval between a plurality of first lines 111, second polyurethane drenches rete 21 and is provided with a plurality of second lines 211 that are parallel to each other along its length direction, be provided with first interval between a plurality of second lines 211, the width of first line 111, the width of second line 211 and the width of first interval are all the same, the thickness of first line 111 is the same with the thickness of second line 211.

By arranging the first grains 111 at one side of the first polyurethane spraying film layer 11 and the second grains 211 at one side of the second polyurethane spraying film layer 21, the bonding area of the first polyurethane spraying film layer 11 and the second polyurethane spraying film layer 21 can be improved, so that the bonding strength of the first polyurethane spraying film layer 11 and the second polyurethane spraying film layer 21 is improved, the first polyurethane spraying film layer 11 and the second polyurethane spraying film layer 21 are fused as a whole as far as possible, water is effectively prevented from permeating between the first polyurethane spraying film layer 11 and the second polyurethane spraying film layer 21, meanwhile, the first grains 111 and the second grains 211 can improve the tensile strength of the first polyurethane spraying film layer 11 and the second polyurethane spraying film layer 21, the damage caused by external force in the application process is prevented, the mode of respectively spraying the first polyurethane spraying film layer 11 and the second polyurethane spraying film layer 21 on the first non-woven fabric 1 and the second non-woven fabric 2 is adopted, the bonding strength of the middle spraying film layer and the non-woven fabrics at two sides can be improved, meanwhile, the stretch-proof strength of the double-sided non-woven fabric can be further improved.

The thickness of the first polyurethane laminating layer 11 and the second polyurethane laminating layer 21 is 30-100 um.

The polyurethane film with the thickness of 30-100 um can ensure that the film layer is not too thick and simultaneously ensures the tensile strength and the waterproof performance.

The thickness of first line 111 and second line 211 is 10um-50um, and the width of first line 111, second line 211 and first interval is 0.2mm-0.5 mm.

The first line 111 and the second line 211 that adopt 10um-50um can improve the intensity that the two bonded each other to can avoid first line 111 and second line 211 to lead to the appearance in gap excessively thick, the setting up of first line 111 and second line 211 width can further improve the identical compactness of the two, has also reduced the degree of difficulty of drenching the membrane simultaneously.

The decorative layer is printed with decorative patterns, and the protective layer is printed by waterproof paint.

The design can be better applied to a use scene, and the use effect of the composite film is improved.

The first non-woven fabric 1 and the second non-woven fabric 2 respectively comprise a plurality of transverse strands and longitudinal strands which are perpendicular to each other, the static friction coefficient of the first non-woven fabric 1 is 0.3-0.4, and the static friction coefficient of the second non-woven fabric 2 is 0.1-0.3.

This design can improve the tensile strength of first non-woven fabrics 1 and second non-woven fabrics 2, and the static friction coefficient of first non-woven fabrics 1 is great, can improve the stability of the decorative pattern laminating of printing to improve decorative pattern's wearability.

The working principle is as follows: it has first polyurethane to drench rete 11 and second polyurethane and drenches rete 21 to drench the membrane respectively through drenching the membrane in the adjacent both sides of first non-woven fabrics 1 and second non-woven fabrics 2 to drench the membrane respectively in the first polyurethane drenches rete 11 and the second polyurethane and drenches the both sides that rete 21 is bonded mutually and have first line 111 and second line 211, through carrying out crisscross pressfitting to first line 111 and second line 211, can improve the cohesive strength and the tensile strength of polyurethane composite film.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The waterproof polyurethane composite film is characterized by comprising a first non-woven fabric (1), a first polyurethane spraying film layer (11), a second polyurethane spraying film layer (21) and a second non-woven fabric (2), wherein the first polyurethane spraying film layer (11) is arranged on one side of the first non-woven fabric (1), the second polyurethane spraying film layer (21) is arranged on one side of the second non-woven fabric (2), a decorative layer is arranged on one side, away from the first polyurethane spraying film layer (11), of the first non-woven fabric (1), and a protective layer is arranged on one side, away from the second polyurethane spraying film layer (21), of the second non-woven fabric (2);

first polyurethane drenches rete (11) and is provided with a plurality of first lines (111) that are parallel to each other along its length direction, is provided with first interval between a plurality of first lines (111), second polyurethane drenches rete (21) and is provided with a plurality of second lines (211) that are parallel to each other along its length direction, is provided with first interval between a plurality of second lines (211), the width of first line (111), the width of second line (211) and the width of first interval are all the same, the thickness of first line (111) is the same with the thickness of second line (211).

2. The waterproof polyurethane composite film according to claim 1, wherein the thickness of the first polyurethane curtain coating layer (11) and the second polyurethane curtain coating layer (21) is 30um to 100 um.

3. The waterproof polyurethane composite film according to claim 1, wherein the thickness of the first texture (111) and the second texture (211) is 10um to 50um, and the width of the first texture (111), the width of the second texture (211) and the width of the first space are 0.2mm to 0.5 mm.

4. The waterproof polyurethane composite film according to claim 1, wherein the decorative layer is printed with a decorative pattern, and the protective layer is printed with a waterproof paint.

5. The waterproof polyurethane composite film according to claim 4, wherein the first nonwoven fabric (1) and the second nonwoven fabric (2) comprise a plurality of transverse strands and longitudinal strands perpendicular to each other, respectively, the static friction coefficient of the first nonwoven fabric (1) is 0.3-0.4, and the static friction coefficient of the second nonwoven fabric (2) is 0.1-0.3.