High-toughness polypropylene film

Abstract

The utility model discloses a tough polypropylene film, which comprises a polypropylene base film layer, and also comprises a wear-resistant layer, a reinforcing layer and a tough layer, the tough layer is arranged on the upper surface of the polypropylene base film layer, the polypropylene base film layer is provided with a first groove, the tough layer is provided with a second groove, the wear-resistant layer is provided with an inclined hole, and the reinforcing layer is provided with a second groove. The reinforcing layer is provided with a plurality of first inclined holes, the first inclined holes penetrate through and extend to the lower surface of the wear-resistant layer, the reinforcing layer is provided with a plurality of second inclined holes, the lower ends of the first inclined holes are communicated with the lower ends of the corresponding second inclined holes, and the reinforcing layer is provided with longitudinal holes communicated with the second inclined holes; the lower end of the longitudinal hole penetrates and extends into the tough layer and is communicated with the second groove, a plurality of through holes penetrating through the upper surface and the lower surface of the polypropylene base film layer are formed in the polypropylene base film layer, and the through holes are communicated with the first groove. After the technical scheme is adopted, the obdurability polypropylene film provided by the utility model has excellent air permeability and obdurability, and is strong in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of film, especially to a strong and tough polypropylene film. BACKGROUND

[0002] With the continuous development of industry, high molecular materials are gradually applied to various fields, and the performance requirements of high molecular materials in various fields are continuously improved. Polypropylene is a polymer with large industrial output, which has the advantages of light weight, easy processing, good chemical stability, etc. and is widely used in the fields of electronic products, automobile parts, packaging materials, etc. However, the structure of polypropylene on the market is still too simple, and the air permeability and ductility need to be further improved. SUMMARY

[0003] The utility model discloses a kind of strong and tough polypropylene films, to solve the problems raised in the above background.

[0004] To solve the above technical problems, the technical scheme adopted by the utility model is: a strong and tough polypropylene film, including polypropylene base film layer, further including wear-resistant layer, reinforcing layer and toughness layer arranged from top to bottom, the toughness layer is arranged on the upper surface of polypropylene base film layer, the upper surface of polypropylene base film layer is provided with a plurality of first grooves, the lower surface of the toughness layer is provided with a plurality of second grooves corresponding to the first grooves, a plurality of first inclined holes are provided on the wear-resistant layer, and the first inclined holes extend through to the lower surface of the wear-resistant layer, a plurality of second inclined holes are provided on the reinforcing layer, the lower end of the first inclined hole is communicated with the lower end of the corresponding second inclined hole, longitudinal holes are provided on the reinforcing layer and communicated with the second inclined holes, the lower end of the longitudinal hole extends through to the toughness layer and is communicated with the second groove, a plurality of through holes are provided on the polypropylene base film layer and extend through the upper and lower surfaces of the polypropylene base film layer, and the through holes are communicated with the first grooves.

[0005] Preferably, the middle part of the second groove is inwardly recessed to form a tensile opening.

[0006] Preferably, the first inclined hole and the second inclined hole are symmetrically arranged.

[0007] Preferably, a nano-silver coating layer is coated on both sides of the polypropylene base film layer.

[0008] Preferably, an ultraviolet blocking coating layer is coated on the side of the wear-resistant layer away from the reinforcing layer.

[0009] Preferably, the toughness layer includes a first layer, a second layer adhered above the first layer, the lower surface of the first layer is adhered to the upper surface of the polypropylene base film layer, and the upper surface of the second layer is adhered to the lower surface of the reinforcing layer.

[0010] Preferably, the first support layer is made of polycarbonate material, and the second support layer is made of nylon material.

[0011] Preferably, the wear-resistant layer is made of polyurethane resin material, and the reinforcing layer is made of polyvinylidene chloride material.

[0012] As can be seen from the above description of the structure of the utility model, compared with the prior art, the utility model has the following advantages:

[0013] 1. The strong and tough polypropylene film has the first groove, the second groove, the first inclined hole, the second inclined hole, the longitudinal hole and the through hole, that is, the V-shaped air hole formed by the first inclined hole and the second inclined hole, so that the water from the outside can not directly flow into the inside and contact the article along the air hole while ensuring the air permeability, in addition, the first groove and the second groove can increase the air flow capacity and enhance the transverse tensile strength of the film.

[0014] 2. The strong and tough polypropylene film has the toughness layer composed of the first support layer and the second support layer, so that the toughness and the impact resistance of the polypropylene film can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated herein in their entirety. The application illustratively described herein suitably can be practiced in the absence of any element or elements not specifically disclosed. In the accompanying drawings:

[0016] Figure 1 is a front view of the strong and tough polypropylene film of the utility model;

[0017] Figure 2 is a front view of the strong and tough polypropylene film of the utility model;

[0018] Figure 3 is a schematic view of the toughness layer of the strong and tough polypropylene film of the utility model. DETAILED DESCRIPTION

[0019] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0020] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "internal", "external" and so on indicate the orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore cannot be understood as a restriction on the utility model. In addition, the terms "first", "second" and so on are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and so on can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0021] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, and can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0022] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0023] Embodiment

[0024] As Figure 1 , Figure 2 and Figure 3As shown in the figure, a kind of tough polypropylene film, including polypropylene base film layer 4, also include wear-resistant layer 1, reinforcing layer 2 and toughness layer 3 from top to bottom, toughness layer 3 is arranged on the upper surface of polypropylene base film layer 4, the upper surface of polypropylene base film layer 4 is provided with a plurality of first grooves 41, the lower surface of toughness layer 3 is provided with second grooves 31 corresponding to the first grooves 41, a plurality of first inclined holes 11 are formed on wear-resistant layer 1, and the first inclined holes 11 extend through to the lower surface of wear-resistant layer 1, a plurality of second inclined holes 21 are formed on reinforcing layer 2, the first inclined holes 11 and the second inclined holes 21 are symmetrically arranged, the lower end of the first inclined hole 11 is communicated with the lower end of the corresponding second inclined hole 21, longitudinal holes 22 are formed on reinforcing layer 2 and communicated with the second inclined holes 21, the lower end of the longitudinal hole 22 extends through to the toughness layer 3 and is communicated with the second grooves 31, a plurality of through holes 42 are formed on polypropylene base film layer 4 and communicated with the first grooves 41. With the structure, by setting the first grooves 41, the second grooves 31, the first inclined holes 11, the second inclined holes 21 and the longitudinal holes 22 and the through holes 42, that is, the V-shaped air holes formed by the first inclined holes 11 and the second inclined holes 21, the water can not flow directly into the inside and contact with the article along the air hole while ensuring the air permeability, which greatly improves the air permeability.

[0025] As shown in the figure, Figure 1 , Figure 2 and Figure 3 As shown in the figure, the middle part of the second groove 31 is inwardly recessed to form a tensile opening 32. With the structure, the setting of the first grooves 41 and the second grooves 31 can increase the capacity of air flow, and the setting of the tensile opening can enhance the transverse tensile strength of the film.

[0026] In this embodiment, nano-silver coating layer is coated on both sides of polypropylene base film layer 4. With the structure, by setting the nano-silver coating layer, the antibacterial and bacteriostatic properties of the polypropylene film can be improved.

[0027] In this embodiment, ultraviolet blocking coating layer is coated on the side of wear-resistant layer 1 away from reinforcing layer 2. With the structure, the ultraviolet blocking coating layer is nano-tungsten oxide material coated on the surface of wear-resistant layer 1 to form, so that the polypropylene film has the function of resisting ultraviolet rays, and the use range of the polypropylene film is expanded.

[0028] As shown in the figure, Figure 3As shown, the toughness layer 3 comprises a first supporting layer 3b and a second supporting layer 3a which is bonded above the first supporting layer 3b, the lower surface of the first supporting layer 3b is bonded on the upper surface of the polypropylene base film layer 4, and the upper surface of the second supporting layer 3a is bonded on the lower surface of the reinforcing layer 2; the first supporting layer 3b is made of polycarbonate material, and the second supporting layer 3a is made of nylon material. With the structure, by arranging the toughness layer 3 which is combined by the first supporting layer 3b and the second supporting layer 3a, the toughness of the polypropylene film can be improved, and the impact resistance of the polypropylene film can be increased to a certain extent.

[0029] In the embodiment, the wear-resistant layer 1 is made of polyurethane resin material, and the reinforcing layer 2 is made of polyvinylidene chloride material. With the structure, the polyurethane resin is a high molecular compound, which has the advantages of oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness and elasticity, so that the wear-resistant layer 1 made of polyurethane resin material can improve the wear resistance and corrosion resistance of the polypropylene film; and the reinforcing layer 2 made of polyvinylidene chloride material can effectively improve the anti-pulling effect of the polypropylene film, and the polypropylene film is not easy to be torn and is durable.

[0030] In specific use, the following steps are performed:

[0031] First, the nano-silver coating layer is placed in a coating machine and is coated on both sides of the polypropylene base film layer 4 by immersion coating, the nano-silver coating layer can release a large amount of silver ions to destroy the structure of cell membrane and cells, so that the film has the effect of inhibiting the growth of bacteria; then, an ultraviolet blocking coating layer is coated on the upper surface of the wear-resistant layer 1; then, the upper surface of the polypropylene base film layer 4 is inwardly pressed by using a molding process to form a first groove 41, and the lower surface of the toughness layer 3 is inwardly pressed by using a molding process to form a second groove 31; then, first inclined holes 11, second inclined holes 21 and longitudinal holes 22 and through holes 42 are punched on the wear-resistant layer 1, the reinforcing layer 2, the toughness layer 3 and the polypropylene base film layer 4 respectively by using a laser punching machine; finally, the toughness layer 3 is bonded on the upper surface of the polypropylene base film layer 4, the reinforcing layer 2 is bonded on the upper surface of the toughness layer 3, and the wear-resistant layer 1 is bonded on the upper surface of the reinforcing layer 2 respectively by using an adhesive.

[0032] The above merely describes a preferred embodiment of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A strong and tough polypropylene film comprising a polypropylene base film layer, characterized by: The wear-resistant layer is provided with a plurality of first inclined holes, and the first inclined holes extend through to the lower surface of the wear-resistant layer; the reinforcing layer is provided with a plurality of second inclined holes; the lower end of the first inclined hole is in communication with the lower end of the corresponding second inclined hole; the reinforcing layer is provided with longitudinal holes in communication with the second inclined holes, and the lower end of the longitudinal hole extends through to the toughness layer and is in communication with the second groove; the polypropylene-based film layer is provided with a plurality of through holes extending through the upper and lower surfaces of the polypropylene-based film layer, and the through holes are in communication with the first grooves.

2. A strong polypropylene film as claimed in claim 1, wherein: The middle part of the second groove is inwardly recessed to form a tensile-resistant opening.

3. The strong polypropylene film according to claim 1, characterized in that: The first inclined hole and the second inclined hole are symmetrically arranged.

4. The strong polypropylene film according to claim 1, characterized in that: The polypropylene-based film layer is coated with a nano-silver coating layer on both sides.

5. The strong polypropylene film according to claim 1, characterized in that: The wear-resistant layer is coated with an ultraviolet blocking coating on the side away from the reinforcing layer.

6. The strong polypropylene film according to claim 1, characterized in that: The toughness layer comprises a first sub-layer and a second sub-layer bonded above the first sub-layer; the lower surface of the first sub-layer is bonded to the upper surface of the polypropylene-based film layer; and the upper surface of the second sub-layer is bonded to the lower surface of the reinforcing layer.

7. A strong polypropylene film as claimed in claim 6, characterized in that: The first sub-layer is made of polycarbonate material, and the second sub-layer is made of nylon material.

8. The strong polypropylene film according to claim 1, characterized in that: The wear-resistant layer is made of polyurethane resin material, and the reinforcing layer is made of polyvinylidene chloride material.

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