Waterproof and breathable composite TPU (thermoplastic polyurethane) film
By setting a support layer and reinforcing ribs under the TPU membrane base layer, setting waterproof isolation holes and guide grooves on it, filling a waterproofing agent layer, and forming a multi-layer composite structure, the problem of insufficient waterproofness and tensile strength of the TPU membrane is solved, and the waterproof and breathable effect is achieved.
Patent Information
- Application Number
- CN202422989657.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-05
AI Technical Summary
The existing TPU composite film has poor waterproof performance, water droplets are easily retained and it is easily deformed under external forces, affecting the use effect.
A TPU membrane base layer is added with a support layer and a lower support layer, and vertically distributed reinforcing ribs are set between the two. It is combined with waterproof isolation holes and guide grooves, and filled with a waterproofing agent layer to form a multi-layer composite structure.
Improves the waterproofness and tensile strength of the TPU film, prevents water droplets from remaining, and enhances tear resistance.
Smart Images
Figure CN223443058U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to TPU film technical field, concretely is a waterproof and ventilative composite TPU film. BACKGROUND
[0002] TPU (hot plastic polyurethane) because of its superior performance and environmental protection concept is increasingly popular with people. Wherever uses PVC, TPU can become the substitute of PVC. But the advantage that TPU possesses, PVC is incomparable. TPU not only has high tension, high pulling force, strong and aging-resistant characteristics, and is a kind of mature environmental protection material. TPU has been widely used in: shoe material, clothing, inflatable toys, water and underwater sports equipment, medical equipment, fitness equipment, car seat material, umbrella, suitcase, leather bag etc. In the prior art, the waterproof performance of traditional TPU composite film is poor, and water droplets can be left on the film surface, and in addition, the equipment is easy to deform when subjected to external force, thereby affecting its use effect. For this purpose, we propose a waterproof and ventilative composite TPU film. SUMMARY
[0003] The utility model discloses a waterproof and ventilative composite TPU film to solve the problem in the background art.
[0004] To achieve the above object, the utility model provides the following technical scheme: a waterproof and ventilative composite TPU film, including TPU film base layer, the bottom of TPU film base layer is provided with upper support layer and lower support layer, the top of TPU film base layer is provided with heat preservation layer, nylon net layer and corrugated film layer, be provided with the reinforcing component between upper support layer and lower support layer, be equipped with a plurality of waterproof isolation holes on TPU film base layer, form the flow guide groove between adjacent waterproof isolation holes, the waterproof isolation hole is filled with waterproof agent layer.
[0005] In the above scheme, the reinforcing component includes a plurality of equidistance distribution's first reinforcing rib and second reinforcing rib, and the first reinforcing rib and the second reinforcing rib are perpendicular distribution.
[0006] In the above scheme, the waterproof isolation hole is designed into square or regular hexagon.
[0007] In the above scheme, the waterproof agent layer is porous polyurethane or polyether agent layer.
[0008] In the above scheme, the upper support layer and the lower support layer are TPU film layers.
[0009] In the above scheme, the TPU film base layer is pasted together with the heat preservation layer, the nylon net layer and the corrugated film layer through the adhesive.
[0010] In the above scheme, the heat preservation layer is polyurethane foam layer.
[0011] Compared with the prior art, the waterproof and breathable composite TPU film has the advantages that the structure design is simple and reasonable, and has strong practicability, the waterproof isolation holes are arranged on the TPU film base layer, the waterproof agent layer is filled in the waterproof isolation holes, the TPU composite film surface is difficult to be soaked, the waterproof property of the TPU composite film is improved, the water flow grooves between the waterproof isolation holes can guide the water out of the TPU composite film surface, so that the water cannot be left on the TPU composite film, the upper support layer and the lower support layer are arranged below the TPU film base layer, the first reinforcing rib and the second reinforcing rib are arranged between the upper support layer and the lower support layer in a vertical distribution mode, the tensile strength of the TPU film is effectively improved, the TPU composite film structure composed of the TPU film base layer, the upper support layer, the lower support layer, the thermal insulation layer, the nylon net layer and the corrugated film layer is arranged, the TPU film strength is effectively improved, and the excellent tear resistance effect is achieved. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a separation structure schematic view of the utility model.
[0013] Figure 2 It is a separation structure schematic view of the utility model. Figure 1 It is a structure schematic view of A in the utility model.
[0014] Figure 3 It is a structure schematic view of the utility model reinforcing assembly.
[0015] In the drawing: 1, TPU film base layer 101, waterproof isolation hole 102, water flow groove 103, waterproof agent layer 11, upper support layer 12, lower support layer 13, first reinforcing rib 14, second reinforcing rib 15, thermal insulation layer 16, nylon net layer 17, corrugated film layer. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0017] Please refer to Figures 1-3The utility model provides a technical scheme: a waterproof and breathable composite TPU film, including TPU film base layer 1, the bottom of TPU film base layer 1 is provided with upper support layer 11 and lower support layer 12, the top of TPU film base layer 1 is provided with heat preservation layer 15, nylon net layer 16 and corrugated film layer 17, be provided with the reinforcing assembly between upper support layer 11 and lower support layer 12, be equipped with a plurality of waterproof isolation holes 101 on TPU film base layer 1, and form the flow guide groove 102 between adjacent waterproof isolation holes 101, the waterproof agent layer 103 is filled in waterproof isolation hole 101.
[0018] In the above scheme, the reinforcing assembly includes a plurality of equally spaced first reinforcing ribs 13 and second reinforcing ribs 14, and the first reinforcing ribs 13 and the second reinforcing ribs 14 are vertically distributed. By setting the upper support layer 11 and the lower support layer 12 below the TPU film base layer 1, and setting the vertically distributed first reinforcing ribs 13 and the second reinforcing ribs 14 therebetween, the tensile strength of the TPU film is effectively improved. By setting the TPU film base layer 1, the upper support layer 11, the lower support layer 12, the heat preservation layer 15, the nylon net layer 16, and the corrugated film layer 17 into a TPU composite film structure, the strength of the TPU film is effectively improved, achieving excellent tear resistance.
[0019] In the above scheme, the waterproof isolation holes 101 are designed as squares or regular hexagons.
[0020] In the above scheme, the waterproof agent layer 103 is a porous polyurethane or polyether agent layer. By setting a plurality of waterproof isolation holes 101 on the TPU film base layer 1 and filling the waterproof agent layer 103 inside, the TPU composite film surface is difficult to be wetted, thereby improving the waterproofness of the TPU composite film. The flow guide grooves 102 between the waterproof isolation holes 101 can guide water out of the TPU composite film surface, so that water does not remain on the TPU composite film. Good waterproof effect is achieved.
[0021] In the above scheme, the upper support layer 11 and the lower support layer 12 are both TPU film layers.
[0022] In the above scheme, the TPU film base layer 1 is adhered together with the heat preservation layer 15, the nylon net layer 16, and the corrugated film layer 17 by an adhesive. By setting the TPU film base layer 1, the upper support layer 11, the lower support layer 12, the heat preservation layer 15, the nylon net layer 16, and the corrugated film layer 17 into a TPU composite film structure, the strength of the TPU film is effectively improved, achieving excellent tear resistance.
[0023] In the above scheme, the heat preservation layer 15 is a polyurethane foam layer. The heat preservation layer made of polyurethane foam material has a thickness of 0.2-0.4mm, and the polyurethane foam has ultra-low temperature thermal conductivity and weather resistance.
[0024] Working principle:
[0025] The waterproof and breathable composite TPU film is composed of the TPU film base layer 1, the upper supporting layer 11, the lower supporting layer 12, the heat preservation layer 15, the nylon net layer 16 and the corrugated film layer 17, effectively improves the strength of the TPU film, achieves the excellent effect of tear resistance, sets the upper supporting layer 11 and the lower supporting layer 12 below the TPU film base layer 1, and sets the vertically distributed first reinforcing rib 13 and the second reinforcing rib 14 between the two, effectively improves the tensile strength of the TPU film, sets a plurality of waterproof isolation holes 101 on the TPU film base layer 1, fills the waterproof agent layer 103 in the waterproof isolation holes 101, makes the surface of the TPU composite film difficult to be soaked, improves the waterproofness of the TPU composite film, and the water flow grooves 102 between the waterproof isolation holes 101 can guide the water out of the surface of the TPU composite film, so that the water cannot remain on the TPU composite film, and good waterproof effect is achieved.
[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A waterproof and breathable composite TPU membrane, comprising a TPU membrane base layer (1), characterized in that: An upper support layer (11) and a lower support layer (12) are provided at the bottom of the TPU film base layer (1); a thermal insulation layer (15), a nylon mesh layer (16) and a corrugated film layer (17) are provided above the TPU film base layer (1); a reinforcing component is provided between the upper support layer (11) and the lower support layer (12); a plurality of waterproof isolation holes (101) are provided on the TPU film base layer (1); guide grooves (102) are formed between adjacent waterproof isolation holes (101); and a waterproofing agent layer (103) is filled in the waterproof isolation holes (101).
2. The waterproof and breathable composite TPU membrane according to claim 1, characterized in that: The reinforcing component comprises a plurality of first reinforcing ribs (13) and second reinforcing ribs (14) distributed at equal distances, wherein the first reinforcing ribs (13) and the second reinforcing ribs (14) are distributed vertically.
3. The waterproof and breathable composite TPU membrane according to claim 1, characterized in that: The waterproof isolation hole (101) is designed to be a square or a regular hexagon.
4. The waterproof and breathable composite TPU membrane according to claim 1, characterized in that: The waterproofing agent layer (103) is a porous polyurethane or polyether agent layer.
5. The waterproof and breathable composite TPU membrane according to claim 1, characterized in that: The upper supporting layer (11) and the lower supporting layer (12) are both TPU film layers.
6. The waterproof and breathable composite TPU membrane according to claim 1, characterized in that: The TPU film base layer (1) is adhered to the thermal insulation layer (15), the nylon mesh layer (16) and the corrugated film layer (17) by means of an adhesive.
7. The waterproof and breathable composite TPU membrane according to claim 1, characterized in that: The thermal insulation layer (15) is a polyurethane foam layer.