Polyurethane (PU) fluorescent moisture-permeable waterproof polyurethane film

Abstract

The utility model discloses a polyurethane (PU) fluorescent type moisture-permeable waterproof polyurethane film, and relates to the technical field of polyurethane films. According to the key points of the technical scheme, a base layer is included, a plurality of supporting pieces are fixedly connected to the base layer, a plurality of light-transmitting grooves are formed in the supporting pieces, a wear-resisting layer is fixedly connected to the sides, away from the base layer, of the supporting pieces, a plurality of through grooves are formed in the wear-resisting layer, and the sectional area of the through grooves is larger than that of the light-transmitting grooves; according to the polyurethane film, the abrasion time of the fluorescent coating on the base layer is prolonged by arranging the abrasion-resistant layer, the structural strength of the carbon fibers is high, and the durability of the polyurethane film is enhanced by arranging the carbon fibers.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane films, and more specifically to a PU fluorescent type moisture-permeable and waterproof polyurethane film. Background Art

[0002] Polyurethane film is light and elastic, and is a common material with good waterproof properties. Traditional polyurethane films have hydrophilic agents added to the material, so that the polyurethane film has high waterproof properties while also taking into account moisture permeability.

[0003] In order to ensure the safety of outdoor workers when working at night, polyurethane films with fluorescent coatings are often used on work clothes. However, the work clothes of outdoor workers often rub against external substances during use. As the number of frictions increases, the fluorescent coating on the polyurethane film will fall off. Therefore, a structure is provided to solve the problem that the fluorescent coating on the polyurethane film is easily worn. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a PU fluorescent moisture-permeable and waterproof polyurethane membrane, and to improve the durability of the fluorescent polyurethane membrane through structural settings.

[0005] The above technical purpose of the utility model is achieved through the following technical scheme: the PU fluorescent moisture-permeable and waterproof polyurethane membrane includes a base layer, a plurality of support sheets are fixedly connected to the base layer, a plurality of light-transmitting grooves are provided on the support sheet, a wear-resistant layer is fixedly connected to the side of the support sheet away from the base layer, a plurality of through grooves are provided on the wear-resistant layer, and the cross-sectional area of ​​the through grooves is larger than the cross-sectional area of ​​the light-transmitting grooves.

[0006] The utility model is further configured as follows: the cross-sectional area of ​​the support sheet is smaller than the cross-sectional area of ​​the wear-resistant layer.

[0007] The utility model is further configured as follows: a light-transmitting space is provided between adjacent support sheets.

[0008] The utility model is further configured as follows: the wear resistance of the wear-resistant layer is greater than the wear resistance of the base layer, and the wear-resistant layer is made of polytetrafluoroethylene.

[0009] The utility model is further configured as follows: the support sheet is made of PET material.

[0010] The utility model is further configured as follows: a fluorescent coating is fixedly connected to one side of the base layer close to the wear-resistant layer.

[0011] In summary, the utility model has the following beneficial effects: the provision of the wear-resistant layer reduces the contact area between the base layer and external substances; during the use of the polyurethane film, the wear-resistant layer will first rub against external substances, thereby extending the use time of the fluorescent coating by extending the friction time between the base layer and the user's body surface; the provision of the light-transmitting groove and the through groove provides a channel for light to pass through, so that the light can stably pass through the wear-resistant layer and radiate out. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an exploded view of the utility model;

[0013] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0014] In the figure: 1. base layer; 2. support sheet; 3. light-transmitting groove; 4. wear-resistant layer; 5. through groove; 6. fluorescent coating. DETAILED DESCRIPTION

[0015] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] The PU fluorescent type moisture permeable waterproof polyurethane membrane, such as Figure 1 and Figure 2 As shown, it includes a base layer 1, which ensures the light transmittance of the polyurethane film by reducing the thickness of the polyurethane film, reduces the absorption of light inside the polyurethane film, and the base layer 1 is coated with a fluorescent coating 6 on the side close to the wear-resistant layer 4 by a coating machine. A number of support sheets 2 are bonded to the base layer 1, and a number of light-transmitting grooves 3 are opened along the thickness direction of the support sheet 2 by a laser cutting machine. The setting of the light-transmitting grooves 3 allows the light generated by the fluorescent coating 6 on the base layer 1 to stably pass through the support sheet 2. The side of the support sheet 2 away from the base layer 1 is fixedly connected with the wear-resistant layer 4. The setting of the wear-resistant layer 4 reduces the contact area between the base layer 1 and external substances. During the use of the polyurethane film, the wear-resistant layer 4 will first rub against external substances. When the wear-resistant layer 4 is completely worn, the base layer 1 will rub against external substances. The service life of the fluorescent coating 6 on the base layer 1 is guaranteed by extending the wear time of the base layer 1.

[0017] like Figure 1 and Figure 2As shown, a plurality of through grooves 5 are opened along the thickness direction of the wear-resistant layer 4 by a laser cutting machine. The arrangement of the through grooves 5 enables the light generated by the fluorescent coating 6 to stably pass through the light-transmitting grooves 3 and the through grooves 5 to illuminate the outside world. The cross-sectional area of ​​the through grooves 5 is greater than the cross-sectional area of ​​the light-transmitting grooves 3, and on the same area, the number of through grooves 5 is greater than the number of light-transmitting grooves 3. By controlling the cross-sectional area of ​​the through grooves 5, the situation in which foreign matter passes through the through grooves 5 and contacts the base layer 1 is reduced, and by controlling the number of through grooves 5, the number of channels for light to pass through the wear-resistant layer 4 is increased, so that the polyurethane film can take into account wear resistance while ensuring stable light transmittance, thereby extending the service life of the polyurethane film.

[0018] like Figure 1 and Figure 2 As shown, the cross-sectional area of ​​the support sheet 2 is smaller than the cross-sectional area of ​​the wear-resistant layer 4. By setting the cross-sectional area of ​​the support sheet 2, there are several deformation spaces between the wear-resistant layer 4 and the base layer 1. The deformation space can provide a stable yielding effect for the wear-resistant layer 4 during the force-bearing process, so that when the polyurethane film is subjected to wear force, the wear-resistant layer 4 can achieve stable yielding of the wear process, reduce the degree of wear of the polyurethane film as a whole by external force, and further enhance the wear resistance of the overall structure. The cross-sectional area of ​​the wear-resistant layer 4 is equal to the cross-sectional area of ​​the base layer 1, so that the wear-resistant layer 4 can completely cover the base layer 1, reducing the wear of the fluorescent coating 6 and the base layer 1.

[0019] like Figure 1 and Figure 2 As shown, there is a light-transmitting space between adjacent support sheets 2, so that the support sheet 2 can achieve stable support for the wear-resistant layer 4 while allowing the light generated by the fluorescent coating 6 to pass through the wear-resistant layer 4 to the outside, and the cross-sectional area of ​​the support sheet 2 is small, thereby increasing the cross-sectional area of ​​the light-transmitting space and increasing the amount of light passing through the wear-resistant layer 4.

[0020] like Figure 1 and Figure 2 As shown, the wear resistance of the wear-resistant layer 4 is greater than that of the base layer 1. By increasing the wear resistance of the wear-resistant layer 4, the wear time of the wear-resistant layer 4 is extended, thereby ensuring the service life of the polyurethane film. The wear-resistant layer 4 is made of polytetrafluoroethylene, and the good wear resistance of polytetrafluoroethylene is utilized to ensure the wear resistance of the wear-resistant layer 4.

[0021] like Figure 1 and Figure 2 As shown, the support sheet 2 is made of PET material. PET not only has high transparency, but also has good friction resistance and stability. The setting of the PET material ensures the stable use of the support sheet 2, so that the light of the fluorescent coating 6 can better pass through the support sheet 2. The base layer 1 includes polyurethane and carbon fiber. The carbon fiber has good high temperature resistance and thermal conductivity. The overall performance of the base layer 1 is enhanced by the setting of the carbon fiber.

[0022] like Figure 1 and Figure 2 As shown, the fluorescent coating 6 is coated on the base layer 1 by a coating machine, a plurality of light-transmitting grooves 3 are opened along the thickness direction of the support sheet 2 by a laser cutting machine, and then the support sheet 2 is bonded to the base layer 1. The light-transmitting grooves 3 are arranged so that the light generated by the fluorescent coating 6 can stably pass through the support sheet 2. A plurality of through grooves 5 are opened along the thickness direction of the wear-resistant layer 4 by a laser cutting machine, and then the wear-resistant layer 4 is bonded to the support sheet 2. The arrangement of the through grooves 5 ensures the wear resistance of the wear-resistant layer 4 and increases the channels for light to pass through the polyurethane film, thereby ensuring the stable use of the fluorescent polyurethane film.

[0023] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. PU fluorescent type moisture permeable waterproof polyurethane film, comprising a base layer (1), characterized in that: A plurality of support sheets (2) are fixedly connected to the base layer (1), a plurality of light-transmitting grooves (3) are provided on the support sheet (2), a wear-resistant layer (4) is fixedly connected to the side of the support sheet (2) away from the base layer (1), a plurality of through grooves (5) are provided on the wear-resistant layer (4), and the cross-sectional area of ​​the through grooves (5) is larger than the cross-sectional area of ​​the light-transmitting grooves (3).

2. The PU fluorescent moisture-permeable waterproof polyurethane film according to claim 1, characterized in that: The cross-sectional area of ​​the support sheet (2) is smaller than the cross-sectional area of ​​the wear-resistant layer (4).

3. The PU fluorescent moisture-permeable waterproof polyurethane film according to claim 1, characterized in that: There is a light-transmitting space between adjacent support sheets (2).

4. The PU fluorescent moisture-permeable waterproof polyurethane film according to claim 1, characterized in that: The wear resistance of the wear-resistant layer (4) is greater than that of the base layer (1), and the wear-resistant layer (4) is made of polytetrafluoroethylene.

5. The PU fluorescent moisture-permeable waterproof polyurethane film according to claim 1, characterized in that: The supporting sheet (2) is made of PET material.

6. The PU fluorescent moisture-permeable waterproof polyurethane film according to claim 1, characterized in that: A fluorescent coating (6) is fixedly connected to one side of the base layer (1) close to the wear-resistant layer (4).

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