Antibacterial and mildew-proof leather sponge with silver ions and preparation method

Abstract

The invention relates to antibacterial and mildew-proof leather sponge with silver ions, which comprises the following components in parts by weight: 60-80 parts of ethylene vinyl acetate and 1-5 parts of foaming agent. The leather comprises the following components in parts by weight: 40-60 parts of polyester modified MD I, 10-20 parts of a silver ion antibacterial agent, 1-3 parts of a plasticizer, 15-25 parts of a bactericide, 1-2 parts of a mildew preventive, 1-3 parts of sponge glue, 3-5 parts of a cross-linking agent, 0.5-0.6 part of a catalyst, 40-50 parts of a leather body, 1-2 parts of leather softening enzyme and 1-2 parts of a leather adhesive. According to the antibacterial and mildew-proof leather sponge with the silver ions and the preparation method, when sponge leather is prepared, due to the excellent antibacterial performance of the silver ions, the silver ions are in contact reaction with cells, inherent components of bacteria are damaged or functional obstacles are generated, and bacterial death is caused, meanwhile, the leather sponge can be prevented from mildewing in cooperation with the mildew preventive, and the antibacterial and mildew-proof effects are achieved. The leather sponge has the antibacterial and mildew-proof functions, and the use experience of a user is improved.

Description

Technical Field

[0001] This invention relates to the field of leather sponge technology, specifically to a leather sponge with silver ion antibacterial and antifungal properties and its preparation method. Background Technology

[0002] Leather foam is made of natural or synthetic materials and has a soft and comfortable feel, providing a good sitting and sleeping experience. Leather foam is widely used in industries such as car seat covers and sofa covers, and has good shock absorption and friction resistance. Although leather foam is relatively expensive and requires regular cleaning and maintenance, its excellent durability makes it the preferred filling material for many consumers.

[0003] In existing technologies, leather sponges are mostly used in industries such as car seat covers and sofa seat covers. Therefore, leather sponges are often in direct contact with the human body. Under suitable temperature and humidity conditions, bacteria and mold will multiply in large quantities in the pores of the leather sponge. Mold secretions cause biodegradation of the sponge material, making the leather sponge prone to mold growth, bacteria and mites, which can harm the human body, cause various discomforts, and reduce the user experience. To address these issues, a leather sponge with silver ion antibacterial and anti-mold properties and its preparation method are proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a leather sponge with silver ion antibacterial and anti-mildew properties and its preparation method. It has the advantages of antibacterial and anti-mildew properties, solving the problem that under suitable temperature and humidity conditions, bacteria and mold will multiply in large quantities in the pores of the leather sponge, and the mold secretions will cause biodegradation of the sponge material, making the leather sponge prone to mold, breeding bacteria and mites, causing harm to the human body, causing various discomforts, and reducing the user experience.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a leather sponge with silver ion antibacterial and antifungal properties, comprising the following weight proportions:

[0006] 60-80 parts ethylene vinyl acetate, 1-5 parts foaming agent, 40-60 parts polyester modified MDI, 10-20 parts silver ion antibacterial agent, 1-3 parts plasticizer, 15-25 parts bactericide, 1-2 parts mildew inhibitor, 1-3 parts sponge adhesive, 3-5 parts crosslinking agent, 0.5-0.6 parts catalyst, 40-50 parts leather body, 1-2 parts leather softening enzyme, and 1-2 parts leather adhesive.

[0007] Furthermore, the leather sponge with silver ion antibacterial and antifungal properties also includes the following parts by weight: 70 parts ethylene vinyl acetate, 3 parts foaming agent, 50 parts polyester modified MD I, 15 parts silver ion antibacterial agent, 2 parts plasticizer, 20 parts bactericide, 1.5 parts antifungal agent, 2 parts sponge adhesive, 4 parts crosslinking agent, 0.55 parts catalyst, 55 parts leather body, 1.5 parts leather softening enzyme, and 1.5 parts leather adhesive.

[0008] Furthermore, the leather sponge with silver ion antibacterial and antifungal properties also includes the following parts by weight: 60 parts ethylene vinyl acetate, 1 part foaming agent, 40 parts polyester modified MD I, 10 parts silver ion antibacterial agent, 1 part plasticizer, 15 parts bactericide, 1 part antifungal agent, 1 part sponge glue, 3 parts crosslinking agent, 0.5 parts catalyst, 40 parts leather body, 1 part leather softening enzyme, and 1 part leather adhesive.

[0009] Furthermore, the leather sponge with silver ion antibacterial and antifungal properties also includes the following parts by weight: 80 parts ethylene vinyl acetate, 5 parts foaming agent, 60 parts polyester modified MD I, 20 parts silver ion antibacterial agent, 3 parts plasticizer, 25 parts bactericide, 2 parts antifungal agent, 3 parts sponge adhesive, 5 parts crosslinking agent, 0.6 parts catalyst, 60 parts leather body, 2 parts leather softening enzyme, and 2 parts leather adhesive.

[0010] This application further proposes a method for preparing a leather sponge with silver ion antibacterial and antifungal properties, comprising the leather sponge with silver ion antibacterial and antifungal properties as described in any one of the claims, including the following steps:

[0011] 1) First, add water to the leather softening enzyme to prepare a 20% leather softening enzyme solution. Then, immerse the leather body in the prepared leather softening enzyme solution to obtain a softened leather body. The leather body is one or more of PE, PVC and PU.

[0012] 2) Mix ethylene vinyl acetate, plasticizer, foaming agent, polyester modified MDI, crosslinking agent and catalyst in proportion, and stir in a mixing tank to obtain mixture A;

[0013] 3) Mix the silver ion antibacterial agent, bactericide, and antifungal agent evenly in proportion to obtain mixture B;

[0014] 4) Mix mixture A and mixture B together and put them into a foaming machine to obtain an antibacterial and mildew-resistant sponge;

[0015] 5) In step 1), one or more of PE, PVC and PU in the leather body are bonded together by leather adhesive;

[0016] 6) Use sponge glue to bond the softened leather body from step 1) to the antibacterial and mildew-resistant sponge body from step 4) to obtain an antibacterial and mildew-resistant leather sponge.

[0017] Furthermore, the soaking time in step 1) is 30 minutes.

[0018] Furthermore, in step 2), the stirring time of the mixing tank is 10-20 minutes, the stirring speed is 800-1000 r / min, and the stirring temperature is 50-70 degrees Celsius.

[0019] Furthermore, the mixing temperature in step 3) is 15-25 degrees Celsius.

[0020] Furthermore, the polyester-modified MDI needs to be preheated to 55-75 degrees Celsius before use, and the antifungal agent is a natural plant-based antifungal agent.

[0021] Furthermore, in step 4), the foaming machine has a foaming index of 0.75-0.95 and a foaming temperature of 60 degrees Celsius.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This invention relates to a silver ion antibacterial and antifungal leather sponge and its preparation method. During the preparation of the sponge leather, silver ion antibacterial agents, bactericides, and antifungal agents are added. Through the excellent antibacterial properties of silver ions, they react with cells, causing damage to the inherent components of bacteria or leading to functional impairment and ultimately bacterial death. Simultaneously, the antifungal agent prevents the leather sponge from becoming moldy, giving it antibacterial and antifungal properties. This improves the user experience and solves the problem that under suitable temperature and humidity conditions, bacteria and mold can multiply rapidly in the pores of the leather sponge, causing mold secretions that lead to the biodegradation of the sponge material, resulting in mold growth, bacteria and mites, harm to the human body, various discomforts, and a reduced user experience. Attached Figure Description

[0024] Figure 1 This is a flowchart of the preparation method of the present invention. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1:

[0027] Please see Figure 1 The leather sponge with silver ion antibacterial and antifungal properties in this embodiment comprises the following parts by weight: 70 parts ethylene vinyl acetate, 3 parts foaming agent, 50 parts polyester modified MD I, 15 parts silver ion antibacterial agent, 2 parts plasticizer, 20 parts bactericide, 1.5 parts antifungal agent, 2 parts sponge adhesive, 4 parts crosslinking agent, 0.55 parts catalyst, 55 parts leather body, 1.5 parts leather softening enzyme, and 1.5 parts leather adhesive.

[0028] This application further proposes a method for preparing a leather sponge with silver ion antibacterial and antifungal properties, comprising the following steps:

[0029] 1) First, add water to the leather softening enzyme to prepare a 20% leather softening enzyme solution. Then, immerse the leather body in the prepared leather softening enzyme solution to obtain a softened leather body. The leather body is one or more of PE, PVC and PU.

[0030] 2) Mix ethylene vinyl acetate, plasticizer, foaming agent, polyester modified MDI, crosslinking agent and catalyst in proportion, and stir in a mixing tank to obtain mixture A;

[0031] 3) Mix the silver ion antibacterial agent, bactericide, and antifungal agent evenly in proportion to obtain mixture B;

[0032] 4) Mix mixture A and mixture B together and put them into a foaming machine to obtain an antibacterial and mildew-resistant sponge;

[0033] 5) In step 1), one or more of PE, PVC and PU in the leather body are bonded together by leather adhesive;

[0034] 6) Use sponge glue to bond the softened leather body from step 1) to the antibacterial and mildew-resistant sponge body from step 4) to obtain an antibacterial and mildew-resistant leather sponge.

[0035] The soaking time in step 1) is 30 minutes.

[0036] The stirring time in the mixing tank in step 2) is 10-20 minutes, the stirring speed is 800-1000 r / min, and the stirring temperature is 50-70 degrees Celsius.

[0037] The mixing temperature in step 3) is 15-25 degrees Celsius.

[0038] Polyester-modified MDI needs to be preheated to 55-75 degrees Celsius before use. The antifungal agent is a natural plant-based antifungal agent.

[0039] In step 4), the foaming index of the foaming machine is 0.75-0.95, and the foaming temperature is 60 degrees Celsius.

[0040] In this embodiment, a certain amount of silver ion antibacterial agent, bactericide and antifungal agent are added to the leather sponge. Through the excellent antibacterial properties of silver ions, the silver ions react with cells, causing the inherent components of bacteria to be destroyed or functionally impaired, leading to bacterial death. At the same time, the antifungal agent can prevent the leather sponge from getting moldy, giving the leather sponge antibacterial and antifungal functions and improving the user experience.

[0041] Example 2:

[0042] Please see Figure 1 The leather sponge with silver ion antibacterial and antifungal properties in this embodiment comprises the following parts by weight: 60 parts ethylene vinyl acetate, 1 part foaming agent, 40 parts polyester modified MD I, 10 parts silver ion antibacterial agent, 1 part plasticizer, 15 parts bactericide, 1 part antifungal agent, 1 part sponge glue, 3 parts crosslinking agent, 0.5 parts catalyst, 40 parts leather body, 1 part leather softening enzyme, and 1 part leather adhesive.

[0043] This application further proposes a method for preparing a leather sponge with silver ion antibacterial and antifungal properties, comprising the following steps:

[0044] 1) First, add water to the leather softening enzyme to prepare a 20% leather softening enzyme solution. Then, immerse the leather body in the prepared leather softening enzyme solution to obtain a softened leather body. The leather body is one or more of PE, PVC and PU.

[0045] 2) Mix ethylene vinyl acetate, plasticizer, foaming agent, polyester modified MDI, crosslinking agent and catalyst in proportion, and stir in a mixing tank to obtain mixture A;

[0046] 3) Mix the silver ion antibacterial agent, bactericide, and antifungal agent evenly in proportion to obtain mixture B;

[0047] 4) Mix mixture A and mixture B together and put them into a foaming machine to obtain an antibacterial and mildew-resistant sponge;

[0048] 5) In step 1), one or more of PE, PVC and PU in the leather body are bonded together by leather adhesive;

[0049] 6) Use sponge glue to bond the softened leather body from step 1) to the antibacterial and mildew-resistant sponge body from step 4) to obtain an antibacterial and mildew-resistant leather sponge.

[0050] The soaking time in step 1) is 30 minutes.

[0051] The stirring time in the mixing tank in step 2) is 10-20 minutes, the stirring speed is 800-1000 r / min, and the stirring temperature is 50-70 degrees Celsius.

[0052] The mixing temperature in step 3) is 15-25 degrees Celsius.

[0053] Polyester-modified MDI needs to be preheated to 55-75 degrees Celsius before use. The antifungal agent is a natural plant-based antifungal agent.

[0054] In step 4), the foaming index of the foaming machine is 0.75-0.95, and the foaming temperature is 60 degrees Celsius.

[0055] In this embodiment, a certain amount of silver ion antibacterial agent, bactericide and antifungal agent are added to the leather sponge. Through the excellent antibacterial properties of silver ions, the silver ions react with cells, causing the inherent components of bacteria to be destroyed or functionally impaired, leading to bacterial death. At the same time, the antifungal agent can prevent the leather sponge from getting moldy, giving the leather sponge antibacterial and antifungal functions and improving the user experience.

[0056] Example 3:

[0057] Please see Figure 1 The leather sponge with silver ion antibacterial and antifungal properties in this embodiment comprises the following parts by weight: 80 parts ethylene vinyl acetate, 5 parts foaming agent, 60 parts polyester modified MD I, 20 parts silver ion antibacterial agent, 3 parts plasticizer, 25 parts bactericide, 2 parts antifungal agent, 3 parts sponge glue, 5 parts crosslinking agent, 0.6 parts catalyst, 60 parts leather body, 2 parts leather softening enzyme, and 2 parts leather adhesive.

[0058] This application further proposes a method for preparing a leather sponge with silver ion antibacterial and antifungal properties, comprising the following steps:

[0059] 1) First, add water to the leather softening enzyme to prepare a 20% leather softening enzyme solution. Then, immerse the leather body in the prepared leather softening enzyme solution to obtain a softened leather body. The leather body is one or more of PE, PVC and PU.

[0060] 2) Mix ethylene vinyl acetate, plasticizer, foaming agent, polyester modified MDI, crosslinking agent and catalyst in proportion, and stir in a mixing tank to obtain mixture A;

[0061] 3) Mix the silver ion antibacterial agent, bactericide, and antifungal agent evenly in proportion to obtain mixture B;

[0062] 4) Mix mixture A and mixture B together and put them into a foaming machine to obtain an antibacterial and mildew-resistant sponge;

[0063] 5) In step 1), one or more of PE, PVC and PU in the leather body are bonded together by leather adhesive;

[0064] 6) Use sponge glue to bond the softened leather body from step 1) to the antibacterial and mildew-resistant sponge body from step 4) to obtain an antibacterial and mildew-resistant leather sponge.

[0065] The soaking time in step 1) is 30 minutes.

[0066] The stirring time in the mixing tank in step 2) is 10-20 minutes, the stirring speed is 800-1000 r / min, and the stirring temperature is 50-70 degrees Celsius.

[0067] The mixing temperature in step 3) is 15-25 degrees Celsius.

[0068] Polyester-modified MDI needs to be preheated to 55-75 degrees Celsius before use. The antifungal agent is a natural plant-based antifungal agent.

[0069] In step 4), the foaming index of the foaming machine is 0.75-0.95, and the foaming temperature is 60 degrees Celsius.

[0070] In this embodiment, a certain amount of silver ion antibacterial agent, bactericide and antifungal agent are added to the leather sponge. Through the excellent antibacterial properties of silver ions, the silver ions react with cells, causing the inherent components of bacteria to be destroyed or functionally impaired, leading to bacterial death. At the same time, the antifungal agent can prevent the leather sponge from getting moldy, giving the leather sponge antibacterial and antifungal functions and improving the user experience.

[0071] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0072] This invention relates to a silver ion antibacterial and antifungal leather sponge and its preparation method. During the preparation of the sponge leather, silver ion antibacterial agents, bactericides, and antifungal agents are added. Through the excellent antibacterial properties of silver ions, they react with cells, causing damage to the inherent components of bacteria or leading to functional impairment and ultimately bacterial death. Simultaneously, the antifungal agent prevents the leather sponge from becoming moldy, giving it antibacterial and antifungal properties. This improves the user experience and solves the problem that under suitable temperature and humidity conditions, bacteria and mold can multiply rapidly in the pores of the leather sponge, causing mold secretions that lead to the biodegradation of the sponge material, resulting in mold growth, bacteria and mites, harm to the human body, various discomforts, and a reduced user experience.

[0073] 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.

[0074] Although embodiments of the 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 invention.

Claims

1. A leather sponge with silver ion antibacterial and antifungal properties, characterized in that, Includes the following weight proportions: 60-80 parts ethylene vinyl acetate, 1-5 parts foaming agent, 40-60 parts polyester modified MD I, 10-20 parts silver ion antibacterial agent, 1-3 parts plasticizer, 15-25 parts bactericide, 1-2 parts mildew inhibitor, 1-3 parts sponge adhesive, 3-5 parts crosslinking agent, 0.5-0.6 parts catalyst, 40-50 parts leather body, 1-2 parts leather softening enzyme, and 1-2 parts leather adhesive.

2. The leather sponge with silver ion antibacterial and antifungal properties according to claim 1, characterized in that, The leather sponge with silver ion antibacterial and antifungal properties further includes the following components in parts by weight: 70 parts ethylene vinyl acetate, 3 parts foaming agent, 50 parts polyester modified MD I, 15 parts silver ion antibacterial agent, 2 parts plasticizer, 20 parts bactericide, 1.5 parts antifungal agent, 2 parts sponge adhesive, 4 parts crosslinking agent, 0.55 parts catalyst, 55 parts leather body, 1.5 parts leather softening enzyme, and 1.5 parts leather adhesive.

3. The leather sponge with silver ion antibacterial and antifungal properties according to claim 1, characterized in that, The leather sponge with silver ion antibacterial and antifungal properties further includes the following parts by weight: 60 parts ethylene vinyl acetate, 1 part foaming agent, 40 parts polyester modified MD I, 10 parts silver ion antibacterial agent, 1 part plasticizer, 15 parts bactericide, 1 part antifungal agent, 1 part sponge glue, 3 parts crosslinking agent, 0.5 parts catalyst, 40 parts leather body, 1 part leather softening enzyme, and 1 part leather adhesive.

4. The leather sponge with silver ion antibacterial and antifungal properties according to claim 1, characterized in that, The leather sponge with silver ion antibacterial and antifungal properties further includes the following components in parts by weight: 80 parts ethylene vinyl acetate, 5 parts foaming agent, 60 parts polyester modified MD I, 20 parts silver ion antibacterial agent, 3 parts plasticizer, 25 parts bactericide, 2 parts antifungal agent, 3 parts sponge adhesive, 5 parts crosslinking agent, 0.6 parts catalyst, 60 parts leather body, 2 parts leather softening enzyme, and 2 parts leather adhesive.

5. A method for preparing a leather sponge with silver ion antibacterial and antifungal properties, comprising the leather sponge with silver ion antibacterial and antifungal properties as described in any one of claims 1 to 4, characterized in that, Includes the following steps: 1) First, add water to the leather softening enzyme to prepare a 20% leather softening enzyme solution. Then, immerse the leather body in the prepared leather softening enzyme solution to obtain a softened leather body. The leather body is one or more of PE, PVC and PU. 2) Mix ethylene vinyl acetate, plasticizer, foaming agent, polyester modified MDI, crosslinking agent and catalyst in proportion, and stir in a mixing tank to obtain mixture A; 3) Mix the silver ion antibacterial agent, bactericide, and antifungal agent evenly in proportion to obtain mixture B; 4) Mix mixture A and mixture B together and put them into a foaming machine to obtain an antibacterial and mildew-resistant sponge; 5) In step 1), one or more of PE, PVC and PU in the leather body are bonded together by leather adhesive; 6) Use sponge glue to bond the softened leather body from step 1) to the antibacterial and mildew-resistant sponge body from step 4) to obtain an antibacterial and mildew-resistant leather sponge.

6. The method for preparing a leather sponge with silver ion antibacterial and antifungal properties according to claim 5, characterized in that, The soaking time in step 1) is 30 minutes.

7. The method for preparing a leather sponge with silver ion antibacterial and antifungal properties according to claim 5, characterized in that: The stirring time in the mixing tank in step 2) is 10-20 min, the stirring speed is 800-1000 r / min, and the stirring temperature is 50-70 degrees Celsius.

8. The method for preparing a leather sponge with silver ion antibacterial and antifungal properties according to claim 5, characterized in that, The mixing temperature in step 3) is 15-25 degrees Celsius.

9. The method for preparing a leather sponge with silver ion antibacterial and antifungal properties according to claim 5, characterized in that, The polyester-modified MDI needs to be preheated to 55-75 degrees Celsius before use, and the antifungal agent is a natural plant-based antifungal agent.

10. The method for preparing a leather sponge with silver ion antibacterial and antifungal properties according to claim 5, characterized in that, In step 4), the foaming index of the foaming machine is 0.75-0.95, and the foaming temperature is 60 degrees Celsius.

Images