Anti-pressing EVA foam roll core

Abstract

The utility model relates to a kind of anti-press EVA foam roll core, belong to EVA foam roll core technical field including roll core assembly, EVA foam roll assembly is wound on the roll core assembly, the roll core assembly includes fixed cylinder, the inside of the fixed cylinder is provided with multiple support rings, the left and right sides of the fixed cylinder are all fixed with baffle ring, the EVA foam roll assembly includes outer layer, EVA foam body, waterproof layer and contact layer, the outer layer is fixed at the outside of EVA foam body.This anti-press EVA foam roll core, by the combination of fixed cylinder and support ring, can effectively disperse pressure, prevent roll core from deforming when being pressed, is very important for some application scenarios needing to bear larger pressure, fixed cylinder, support ring and baffle ring are all made of stainless steel material, with very high strength and corrosion resistance, stainless steel material can resist corrosion factors in environment, such as humidity, acid and alkali etc., to ensure long-term stable use of roll core assembly, improve compression resistance, protect EVA foam.

Description

Technical Field

[0001] This utility model relates to the field of EVA foam roll core technology, specifically a pressure-resistant EVA foam roll core. Background Technology

[0002] EVA foam is a high-performance foam material with good elasticity, flexibility, cushioning properties and water resistance. It is widely used in packaging, household goods, sports protection and other fields. EVA foam is generally wound up using core rolls.

[0003] Traditional EVA foam cores are generally paper tubes. Paper tubes have limited strength and rigidity, making them prone to deformation under external forces. The lack of an effective support structure prevents the uniform distribution of pressure, causing the core to deform locally or entirely under significant external forces, thus affecting its protective effect. For example, during transportation, if the EVA foam core is squeezed, the paper tube may be flattened, reducing the distance between the EVA foam layers and decreasing the cushioning performance, thereby failing to effectively protect the packaged items. Therefore, a pressure-resistant EVA foam core is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pressure-resistant EVA foam roll core, which has advantages such as improved pressure resistance and protection of EVA foam, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A pressure-resistant EVA foam roll core includes a roll core assembly, on which an EVA foam roll assembly is wound. The core assembly includes a fixed cylinder, inside which are provided multiple support rings, and retaining rings are fixed on both the left and right sides of the fixed cylinder.

[0006] Furthermore, the EVA foam roll assembly includes an outer layer, an EVA foam body, a waterproof layer, and a contact layer. The outer layer is fixed to the outside of the EVA foam body, the EVA foam body is fixed to the outside of the waterproof layer, and the waterproof layer is sprayed onto the outside of the contact layer.

[0007] Furthermore, the fixing cylinder, support ring, and retaining ring are all made of stainless steel.

[0008] Furthermore, the outer layer is a nylon layer.

[0009] Furthermore, the EVA foam body is an ethylene-vinyl acetate copolymer foam layer.

[0010] Furthermore, the waterproof layer is a polyurethane coating.

[0011] Furthermore, the contact layer is a polyester fiber layer.

[0012] Furthermore, both the left and right sides of the winding core assembly are fitted to the side opposite to the left and right retaining rings.

[0013] Compared with the prior art, this utility model provides a pressure-resistant EVA foam roll core, which has the following beneficial effects: 1. This pressure-resistant EVA foam roll core effectively disperses pressure through the combination of a fixing cylinder and a support ring, preventing the roll core from deforming under pressure. This is crucial for applications that require withstanding significant pressure. The fixing cylinder, support ring, and retaining ring are all made of stainless steel, which has high strength and corrosion resistance. Stainless steel can resist corrosive factors in the environment, such as moisture, acids, and alkalis, thereby ensuring the long-term stable use of the roll core assembly, improving its pressure resistance, and protecting the EVA foam.

[0014] 2. This pressure-resistant EVA foam roll core enhances the wear resistance and tensile strength of the EVA foam roll through its outer layer, improves the waterproof performance of the EVA foam roll through its waterproof layer, and prevents moisture from entering the roll core in humid environments such as basements or damp warehouses. The contact layer provides a soft contact surface, which can prevent scratches on the product during use. Attached Figure Description

[0015] Figure 1 This is a structural view of the present invention; Figure 2 This is a view of the core assembly of this utility model; Figure 3 This is an exploded view of the EVA foam roll assembly of this utility model.

[0016] In the diagram: 1. Core assembly, 101. Fixing cylinder, 102. Support ring, 103. Retaining ring, 2. EVA foam roll assembly, 201. Outer layer, 202. EVA foam body, 203. Waterproof layer, 204. Contact layer. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1 In this embodiment, an anti-pressure EVA foam roll core includes a roll core assembly 1, on which an EVA foam roll assembly 2 is wound.

[0019] Please see Figure 2 In this embodiment, the core assembly 1 includes a fixing cylinder 101, and a plurality of support rings 102 are provided inside the fixing cylinder 101. A retaining ring 103 is fixed on both the left and right sides of the fixing cylinder 101.

[0020] Specifically, the fixing cylinder 101, the support ring 102 and the retaining ring 103 are all made of stainless steel, and the left and right sides of the core assembly 1 are attached to the opposite side of the left and right retaining rings 103.

[0021] It should be noted that the fixing cylinder 101, as the core structure of the core assembly 1, has multiple support rings 102 inside that play a crucial supporting role. When the core is subjected to external pressure, the multiple support rings 102 can evenly distribute the pressure and prevent the fixing cylinder 101 from deforming. The retaining rings 103 on the left and right sides of the fixing cylinder 101 can restrict the position of the EVA foam roll assembly 2. During the use of the core, the retaining rings 103 can prevent the EVA foam roll assembly 2 from sliding or shifting on the fixing cylinder 101. The outer side of the EVA foam roll assembly 2 is flush with the outer side of the retaining rings 103. The retaining rings 103 on the left and right sides can reduce the pressure exerted by objects on the EVA foam roll assembly 2, thus reducing the performance degradation of the EVA foam roll assembly 2.

[0022] Please see Figure 3 In this embodiment, the EVA foam roll assembly 2 includes an outer layer 201, an EVA foam body 202, a waterproof layer 203, and a contact layer 204. The outer layer 201 is fixed to the outside of the EVA foam body 202, the EVA foam body 202 is fixed to the outside of the waterproof layer 203, and the waterproof layer 203 is sprayed on the outside of the contact layer 204.

[0023] Specifically, the EVA foam body 202 is an ethylene-vinyl acetate copolymer foam layer, the waterproof layer 203 is a polyurethane coating, and the contact layer 204 is a polyester fiber layer.

[0024] It should be noted that the outer layer 201 of the EVA foam roll assembly 2 has high abrasion resistance and tensile strength. The outer layer 201 is in direct contact with the external environment and can effectively resist external friction and pulling. The EVA foam body 202 can undergo elastic deformation and absorb pressure. When the item is impacted by external force, the EVA foam body 202 can play a buffering role and reduce the impact force on the item. The waterproof layer 203 can effectively prevent water penetration. In humid environments, such as basements or damp warehouses, it can prevent water from entering the roll core. The contact layer 204 provides a soft contact surface, which can avoid scratching the product during use.

[0025] The working principle of the above embodiments is as follows: In use, the fixing cylinder 101 serves as the core structure of the core assembly 1, with multiple support rings 102 inside playing a crucial supporting role. When the core is subjected to external pressure, the multiple support rings 102 can evenly distribute the pressure, preventing the fixing cylinder 101 from deforming. The retaining rings 103 on the left and right sides of the fixing cylinder 101 can restrict the position of the EVA foam roll assembly 2. During the use of the core, the retaining rings 103 can prevent the EVA foam roll assembly 2 from sliding or shifting on the fixing cylinder 101. The outer layer 201 in the EVA foam roll assembly 2 has a high... With its abrasion resistance and tensile strength, the outer layer 201, which is in direct contact with the external environment, can effectively resist external friction and pulling. The EVA foam body 202 can undergo elastic deformation and absorb pressure. When the item is subjected to external impact, the EVA foam body 202 can act as a buffer to reduce the impact damage to the item. The waterproof layer 203 can effectively prevent water penetration. In humid environments, such as basements or damp warehouses, it can prevent water from entering the core. The contact layer 204 provides a soft contact surface, which can prevent scratches on the product during use.

[0026] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] 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.

[0028] 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 pressure-resistant EVA foam roll core, comprising a roll core assembly (1), characterized in that: The core assembly (1) is wound with an EVA foam roll assembly (2); The core assembly (1) includes a fixed cylinder (101), and a plurality of support rings (102) are provided inside the fixed cylinder (101). A retaining ring (103) is fixed on both the left and right sides of the fixed cylinder (101).

2. The pressure-resistant EVA foam roll core according to claim 1, characterized in that: The EVA foam roll assembly (2) includes an outer layer (201), an EVA foam body (202), a waterproof layer (203), and a contact layer (204). The outer layer (201) is fixed to the outside of the EVA foam body (202), the EVA foam body (202) is fixed to the outside of the waterproof layer (203), and the waterproof layer (203) is sprayed on the outside of the contact layer (204).

3. The pressure-resistant EVA foam roll core according to claim 1, characterized in that: The fixed cylinder (101), support ring (102) and retaining ring (103) are all made of stainless steel.

4. The pressure-resistant EVA foam roll core according to claim 2, characterized in that: The outer layer (201) is a nylon layer.

5. The pressure-resistant EVA foam roll core according to claim 2, characterized in that: The EVA foam body (202) is an ethylene-vinyl acetate copolymer foam layer.

6. The pressure-resistant EVA foam roll core according to claim 2, characterized in that: The waterproof layer (203) is a polyurethane coating.

7. The pressure-resistant EVA foam roll core according to claim 2, characterized in that: The contact layer (204) is a polyester fiber layer.

8. The pressure-resistant EVA foam roll core according to claim 1, characterized in that: The left and right sides of the core assembly (1) are in contact with the side opposite to the left and right side retaining rings (103).

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