High-strength impact-resistant PA film

Abstract

The utility model relates to a high-strength impact-resistant PA (polyamide) film, which belongs to the technical field of PA films and comprises a polyamide layer, and an impact-resistant reinforcing structure is arranged outside the polyamide layer. The anti-impact reinforcing structure comprises a first base material layer fixedly connected to the top of the polyamide layer, the top of the first base material layer is fixedly connected with a second base material layer, the top of the second base material layer is fixedly connected with a first fiber layer, the bottom of the blocking layer is fixedly connected with a second fiber layer, and the top of the second fiber layer is fixedly connected with a second fiber layer. The bottoms of the first fiber layer and the second fiber layer are fixedly connected with nylon reinforced grids. According to the high-strength impact-resistant PA film, the impact-resistant reinforcing structure is arranged, so that compared with an existing PA film, the high-strength impact-resistant PA film is relatively high in overall strength and relatively good in impact resistance and tensile property, so that when the film is impacted by external force, the film is not easy to break or break, and the packaging requirement is better met.

Description

TECHNICAL FIELD

[0001] The utility model relates to PA film technical field, specifically to a high strength PA film of impact resistance. BACKGROUND

[0002] PA film, that is, polyamide film, is a film made of polyamide, and polyamide is a polymer containing many repeating amide groups in the molecular backbone. This high molecular polymer is also widely known as nylon. PA film becomes one of the products with larger production of general engineering plastics due to its excellent physical and mechanical properties and good application effect. The varieties of PA film mainly include nylon 6, nylon 66, nylon 11, nylon 12, copolymer nylon and newly developed polyaryl nylon. In the packaging field, nylon 6 is mainly used. According to the film forming method, PA film can be divided into biaxially oriented film, uniaxially oriented film, un-stretched film and co-extruded multi-layer film or dry composite film. These different types of PA film have their own unique characteristics and application fields. In the process of producing PA film, the common methods are flow-satin method, blow cylinder film method and biaxial stretching method. PA film belongs to oriented film, and its performance characteristics include that after longitudinal and transverse stretching, the polymer molecules have high orientation, resulting in loss of heat sealing property, improvement of crystallinity and mechanical properties. At the same time, PA film has a wide application in the packaging field, such as food packaging, electronic components, precision instruments, fragile products, etc. In addition, PA film can be compounded with other materials to achieve more diversified packaging effect and function.

[0003] PA film is needed in the field of article packaging. Although the existing PA film can resist the erosion of various chemical substances and has good heat resistance and cold resistance.

[0004] However, the overall strength of the existing PA film is not high, and the impact resistance is poor. When encountering external impact, it is easy to break or have holes, which cannot meet the packaging requirements. Therefore, a high-strength PA film with impact resistance is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the defects of the prior art, the utility model provides a high-strength PA film with impact resistance, which has the advantages of high overall strength and good impact resistance, and solves the problem that the overall strength of the existing PA film is not high, and the impact resistance is poor, which is easy to break or have holes when encountering external impact, and cannot meet the packaging requirements.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a high-strength PA film with impact resistance, comprising a polyamide layer, and an impact-resistant reinforcing structure is arranged outside the polyamide layer.

[0007] The anti-impact reinforcing structure comprises a first substrate layer fixedly connected at the top of a polyamide layer, a second substrate layer fixedly connected at the top of the first substrate layer, a first fiber layer fixedly connected at the top of the second substrate layer, a coating film layer fixedly connected at the bottom of the polyamide layer, a barrier layer fixedly connected at the bottom of the coating film layer, a second fiber layer fixedly connected at the bottom of the barrier layer, and a nylon reinforcing grid fixedly connected at the bottom of the first fiber layer and the second fiber layer, and a tensile belt fixedly connected at the inner side of the nylon reinforcing grid.

[0008] Further, the first fiber layer and the second fiber layer have the same thickness and are both glass fibers.

[0009] Further, the first substrate layer is silicon dioxide, and the second substrate layer is calcium carbonate.

[0010] Further, three tensile belts are arranged in each grid of the nylon reinforcing grid, and the tensile belts are rubber.

[0011] Further, the outer surface of the coating film layer is sprayed with a waterproof coating.

[0012] Further, the barrier layer is resin.

[0013] Compared with the prior art, the technical scheme has the following beneficial effects:

[0014] The high-strength and anti-impact PA film has the anti-impact reinforcing structure, the first substrate layer and the second substrate layer made of silicon dioxide and calcium carbonate respectively can avoid film adhesion, thereby improving the strength of the film and facilitating winding, the first fiber layer and the second fiber layer made of glass fiber can play a role similar to reinforcing steel bars in the film, thereby enhancing the toughness and rigidity of the film and significantly improving the anti-impact strength, the nylon reinforcing grid can enhance the wear resistance of the film, thereby prolonging the service life, and the tensile belt made of rubber has good elasticity, thereby effectively improving the tensile performance, so that the overall strength of the film is higher, and the anti-impact and tensile performance are better, so that the film is not easy to break or have a hole when impacted by external force, thereby better meeting the packaging requirements. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure perspective view of the utility model;

[0016] Figure 2 It is a structure perspective view of the utility model; Figure 1 It is an enlarged structure schematic view of A shown in the utility model;

[0017] Figure 3 It is a structure front view of the utility model.

[0018] In the figure: 1 polyamide layer, 2 first substrate layer, 3 second substrate layer, 4 first fiber layer, 5 coating film layer, 6 barrier layer, 7 second fiber layer, 8 nylon reinforced mesh, 9 tensile tape. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1 to 3 In this embodiment, a high-strength and impact-resistant PA film includes a polyamide layer 1, and an impact-resistant reinforcement structure is provided on the outside of the polyamide layer 1.

[0021] The impact-resistant reinforcement structure includes a first substrate layer 2 fixedly connected to the top of the polyamide layer 1, a second substrate layer 3 fixedly connected to the top of the first substrate layer 2, a first fiber layer 4 fixedly connected to the top of the second substrate layer 3, a coating film layer 5 fixedly connected to the bottom of the polyamide layer 1, a barrier layer 6 fixedly connected to the bottom of the coating film layer 5, a second fiber layer 7 fixedly connected to the bottom of the barrier layer 6, and nylon reinforcing mesh 8 fixedly connected to the bottom of both the first fiber layer 4 and the second fiber layer 7. A tensile band 9 is fixedly connected to the inner side of the nylon reinforcing mesh 8. In use, the first substrate layer 2 and the second substrate layer 3, made of silica and calcium carbonate respectively, can prevent film adhesion, thereby improving the strength of the film and facilitating winding.

[0022] The first fiber layer 4 and the second fiber layer 7, made of glass fiber, can act as a support similar to steel bars in the film, thereby enhancing the toughness and rigidity of the film and significantly improving its impact resistance. The nylon reinforcing mesh 8 can enhance the wear resistance of the film, thereby improving its service life.

[0023] In addition, the tensile band 9, made of rubber, has good elasticity, which effectively improves its tensile properties. Compared with the existing PA film, it has higher overall strength and better impact and tensile properties, making it less likely to break or tear when the film is hit by external force, thus better meeting packaging requirements.

[0024] It should be noted that the first fiber layer 4 and the second fiber layer 7 have the same thickness and are both glass fibers. The first substrate layer 2 is silicon dioxide and the second substrate layer 3 is calcium carbonate.

[0025] It should be understood that each grid of the nylon reinforced mesh 8 is provided with three tensile bands 9, which are made of rubber.

[0026] The outer surface of the coating film 5 is coated with a waterproof coating. By setting the coating film 5 with a waterproof coating on the outer surface, the waterproof performance of the film can be improved, thereby reducing the amount of water penetration and achieving the effect of protecting the items. At the same time, the waterproof coating can be composed of polymer materials, modified asphalt, polyurethane, epoxy resin and other materials.

[0027] In addition, the barrier layer 6 is made of resin, which has good isolation properties, thereby improving the corrosion resistance of the film.

[0028] The working principle of the above embodiments is as follows:

[0029] In use, the first substrate layer 2 and the second substrate layer 3, made of silicon dioxide and calcium carbonate respectively, can prevent film adhesion, thereby improving the strength of the film and making it easier to wind up. The first fiber layer 4 and the second fiber layer 7, made of glass fiber, can act as a support similar to steel bars in the film, thereby enhancing the toughness and rigidity of the film and significantly improving its impact resistance. The nylon reinforcing mesh 8 can enhance the wear resistance of the film, thereby increasing its service life. In addition, the tensile band 9 made of rubber has good elasticity, thereby effectively improving its tensile properties. The coating film layer 5, with a waterproof coating sprayed on the outer surface, can improve the waterproof performance of the film, thereby reducing water penetration and achieving the effect of protecting the items. The barrier layer 6 made of resin has good isolation properties, thereby improving the corrosion resistance of the film.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength, impact-resistant PA film, comprising a polyamide layer (1), characterized in that: The polyamide layer (1) is provided with an impact-resistant reinforcement structure on its exterior; The impact-resistant reinforcement structure includes a first substrate layer (2) fixedly connected to the top of the polyamide layer (1), a second substrate layer (3) fixedly connected to the top of the first substrate layer (2), a first fiber layer (4) fixedly connected to the top of the second substrate layer (3), a coating film layer (5) fixedly connected to the bottom of the polyamide layer (1), a barrier layer (6) fixedly connected to the bottom of the coating film layer (5), a second fiber layer (7) fixedly connected to the bottom of the barrier layer (6), a nylon reinforcing mesh (8) fixedly connected to the bottom of both the first fiber layer (4) and the second fiber layer (7), and a tensile strip (9) fixedly connected to the inner side of the nylon reinforcing mesh (8).

2. The high-strength, impact-resistant PA film according to claim 1, characterized in that: The first fiber layer (4) and the second fiber layer (7) have the same thickness, and both are glass fibers.

3. The high-strength, impact-resistant PA film according to claim 1, characterized in that: The first substrate layer (2) is silicon dioxide, and the second substrate layer (3) is calcium carbonate.

4. The high-strength, impact-resistant PA film according to claim 1, characterized in that: Each grid of the nylon reinforced mesh (8) is provided with three tensile strips (9), which are made of rubber.

5. The high-strength, impact-resistant PA film according to claim 1, characterized in that: The outer surface of the coating film (5) is coated with a waterproof coating.

6. The high-strength, impact-resistant PA film according to claim 1, characterized in that: The barrier layer (6) is made of resin.

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