Environment-friendly low-carbon functional synthetic leather and processing technology

Abstract

The invention relates to the technical field of synthetic leather, in particular to environment-friendly low-carbon functional synthetic leather and a processing technology. Manufacturing a non-woven fabric; carrying out wet processing on microfibers; drawing out and splitting; oiling and kneading; rolling with wind; performing shaping; buffing; carrying out impregnation treatment; pre-solidification is carried out; treating with three ironing rollers; coating is conducted; performing solidification treatment; washing with water; performing ironing treatment; performing drying; cooling is performed; performing rolling; according to the environment-friendly low-carbon functional synthetic leather and the processing technology, the non-woven fabric is subjected to fibrosis structure treatment, the strength and the air permeability of the non-woven fabric are guaranteed, meanwhile, the non-woven fabric is subjected to coating and bonding processing in cooperation with corresponding paint, and it is guaranteed that the non-woven fabric has other effects; and the pollution to the environment is reduced in the processing process, so that the method is more environment-friendly.

Description

Technical Field

[0001] The invention relates to the technical field of synthetic leather, in particular to an environmentally friendly, low-carbon, functional synthetic leather and a processing technology. Background Art

[0002] With the promotion of environmental awareness and low-carbon concepts, the synthetic leather industry has increasingly higher requirements for environmental protection and functionality. Traditional synthetic leather processing technology usually produces a large amount of wastewater and harmful chemicals, causing great pollution to the environment. In addition, synthetic leather with a single function can no longer meet the diversified needs of the market. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the present invention provides an environmentally friendly, low-carbon, functional synthetic leather and a processing technology.

[0005] (II) Technical solution

[0006] To achieve the above object, the present invention provides the following technical solution: an environmentally friendly, low-carbon, functional synthetic leather and processing technology, including a composite synthetic leather body, the processing technology of the composite synthetic leather body comprising the following steps:

[0007] Step 1, spinning: spinning polymer materials into fibers;

[0008] Step 2, non-woven fabric manufacturing: making the fibers into non-woven fabric;

[0009] Step 3, ultra-fiber wet treatment: ultra-fiber wet treatment of the non-woven fabric;

[0010] Step 4, extraction and fiber opening: extracting the solvent in the non-woven fabric and performing fiber opening treatment;

[0011] Step 5, oiling and kneading: apply lubricating oil on the material and knead it mechanically;

[0012] Step 6: Air kneading: further use aerodynamic force to enhance the softness and breathability of the material;

[0013] Step 7: shaping: fixing the fiber mesh structure;

[0014] Step 8, grinding: grinding the surface of the material;

[0015] Step 9, impregnation treatment: impregnating the functional filler and squeezing out excess solution;

[0016] Step 10, pre-solidification: perform preliminary solidification treatment;

[0017] Step 11, three hot roller treatment: the material is treated by three hot roller devices;

[0018] Step 12, coating: coating a functional coating on the surface of the material;

[0019] Step 13, solidification treatment: solidifying the coating in the solution;

[0020] Step 14: Water washing: remove residual organic solvents and ensure water safety;

[0021] Step 15, ironing treatment: ironing treatment is performed by multiple ironing rollers;

[0022] Step 16, drying: dry the material thoroughly;

[0023] Step 17, cooling: cooling the dried material to room temperature;

[0024] Step 18, winding: winding the processed material;

[0025] Step 19: Composite treatment: composite the functional coating and the base layer on the above-treated material.

[0026] Preferably, the specific steps in step 1 are:

[0027] Step a1, raw material selection: select polymer materials that meet environmental protection standards and spin them through melt spinning or solution spinning process;

[0028] Step a2, spinning process: melt spinning heats the polyester fiber to a molten state, extrude it through a spinning nozzle, and form continuous fiber filaments; solution spinning dissolves the material in a suitable solvent, extrude it through a nozzle, and quickly solidifies it into a shape;

[0029] Step a3, fiber cooling: the spun fiber is cooled by a cooling bath or cooling air to solidify it into shape.

[0030] Preferably, the specific steps in step 2 include:

[0031] Step b1, fiber laying: laying the fiber filaments into a mesh and forming a non-woven fabric by heat melting or mechanical reinforcement;

[0032] Step b2, reinforcement treatment: needle punching to enhance the strength and uniformity of the non-woven fabric.

[0033] Preferably, the specific steps in step 10 include:

[0034] Carry out preliminary solidification at 40±2℃ to ensure a firm bond between the filler and the material.

[0035] Preferably, in step 16, the drying temperature is 150 ± 2°C.

[0036] Preferably, in step 19, the specific steps include:

[0037] Step c1, drying the raw materials for preparing the functional coating and the base layer;

[0038] Step c2, mixing the raw materials in the above step c1 according to the proportion;

[0039] Step c3, loading the prepared materials in order to ensure the continuity and stability of the processing;

[0040] Step c4, using a screw extruder to extrude the mixed material to form a uniform sheet;

[0041] Step c5, unwinding the material wound up in the above step 18, further flattening and stretching the extruded sheet through a casting process to form a base layer and a functional coating, improving the uniformity and surface smoothness of the material, and then laminating the unwound material with the base layer and the functional coating;

[0042] Step c6: The composite structure is subjected to dry veneer technology, and different functional layers are bonded together by hot pressing technology to form a final product, which is then rolled up.

[0043] (III) Beneficial effects

[0044] Compared with the prior art, the present invention provides an environmentally friendly, low-carbon, functional synthetic leather and processing technology, which has the following beneficial effects:

[0045] This environmentally friendly, low-carbon, functional synthetic leather and processing technology performs fiberization structure treatment on non-woven fabrics to ensure their strength and breathability, and at the same time, the fabrics are coated and bonded with corresponding coatings to ensure that they have other effects. The processing process reduces pollution to the environment and is more environmentally friendly. DETAILED DESCRIPTION

[0046] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] An environmentally friendly, low-carbon, functional synthetic leather and processing technology, including a composite synthetic leather body, the processing technology of the composite synthetic leather body comprising the following steps:

[0048] Step 1: Spinning: Spinning polymer materials into fibers. Specifically:

[0049] Step a1, raw material selection: select polymer materials that meet environmental protection standards and spin them through melt spinning or solution spinning process;

[0050] Step a2, spinning process: melt spinning heats the polyester fiber to a molten state, extrude it through a spinning nozzle, and form continuous fiber filaments; solution spinning dissolves the material in a suitable solvent, extrude it through a nozzle, and quickly solidifies it into a shape;

[0051] Step a3, fiber cooling: the spun fiber is cooled by a cooling bath or cooling air to solidify it into shape;

[0052] Step 2: Non-woven fabric manufacturing: The fibers are made into non-woven fabrics. Specifically:

[0053] Step b1, fiber laying: laying the fiber filaments into a mesh and forming a non-woven fabric by heat melting or mechanical reinforcement;

[0054] Step b2, strengthening treatment: needle punching to strengthen the strength and uniformity of the non-woven fabric;

[0055] Step 3, soaking the non-woven fabric in a solution of the microfiber material, and using a wet process to make the microfiber material evenly penetrate into the non-woven fabric to form a composite structure;

[0056] Step 4: Remove the solvent in the non-woven fabric, so that the microfiber forms a mesh structure inside the non-woven fabric, thereby improving the air permeability and softness of the product;

[0057] Step 5, oiling and rubbing: In order to increase the feel and softness of the synthetic leather, lubricating oil is applied to its surface, and the oil is evenly distributed through the fiber gaps through a mechanical rubbing process;

[0058] Step 6: Air kneading: further use aerodynamic force to enhance the softness and breathability of the material;

[0059] Step 7: Fixing the fiber mesh structure by heat treatment or chemical treatment to keep the material in a stable shape and performance;

[0060] Step 8: Grinding: Use a grinding machine to grind the surface of the material to improve the surface smoothness and texture;

[0061] Step 9, impregnation treatment: immerse the material in a solution containing functional fillers, squeeze out excess solution through a roller to ensure uniform impregnation of the material;

[0062] Step 10, pre-solidification: preliminary solidification is carried out at 40 ± 2 ° C to make the filler and the material firmly bonded;

[0063] Step 11, three-roller heating treatment: use three-roller heating device to further heat the material to improve the density and flatness of the material;

[0064] Step 12, coating: coating the functional coating material evenly on the surface of the synthetic leather to provide specific functions such as waterproof, antifouling or antibacterial;

[0065] Step 13, solidification treatment: solidify the coating in a DMF solution at 40±2°C to accelerate film formation and firm bonding;

[0066] Step 14, water washing: washing with a large amount of water at 65±10°C to remove residual organic solvent and ensure that the DMF concentration of the effluent is less than 1%;

[0067] Step 15: Ironing: Use ten ironing rollers to iron the material to ensure a smooth surface.

[0068] Step 16, drying: drying at 150 ± 2 ° C to completely remove internal moisture and solvent to ensure the stability of the material;

[0069] Step 17, cooling: gradually cool the dried material to room temperature to avoid deformation or cracking caused by sudden cooling;

[0070] Step 18, winding: winding the processed material;

[0071] Step 19, composite treatment: composite the functional coating and the base layer on the above-treated material. The specific steps are as follows:

[0072] Step c1, drying the raw materials for preparing the functional coating and the base layer;

[0073] Step c2, mixing the raw materials in the above step c1 according to the proportion;

[0074] Step c3, loading the prepared materials in order to ensure the continuity and stability of the processing;

[0075] Step c4, using a screw extruder to extrude the mixed material to form a uniform sheet;

[0076] Step c5, unwinding the material wound up in the above step 18, further flattening and stretching the extruded sheet through a casting process to form a base layer and a functional coating, improving the uniformity and surface smoothness of the material, and then laminating the unwound material with the base layer and the functional coating;

[0077] Step c6: The composite structure is subjected to dry veneer technology, and different functional layers are bonded together by hot pressing technology to form a final product, which is then rolled up.

[0078] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description in conjunction with the specific embodiments listed. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0079] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0080] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly, low-carbon, functional synthetic leather and processing technology, It is characterized in that The invention comprises a composite synthetic leather body, wherein the processing technology of the composite synthetic leather body comprises the following steps: Step 1, spinning: spinning polymer materials into fibers; Step 2, non-woven fabric manufacturing: making the fibers into non-woven fabric; Step 3, ultra-fiber wet treatment: ultra-fiber wet treatment of the non-woven fabric; Step 4, extraction and fiber opening: extracting the solvent in the non-woven fabric and performing fiber opening treatment; Step 5, oiling and kneading: apply lubricating oil on the material and knead it mechanically; Step 6: Air kneading: further use aerodynamic force to enhance the softness and breathability of the material; Step 7: shaping: fixing the fiber mesh structure; Step 8, grinding: grinding the surface of the material; Step 9, impregnation treatment: impregnating the functional filler and squeezing out excess solution; Step 10, pre-solidification: perform preliminary solidification treatment; Step 11, three hot roller treatment: the material is treated by three hot roller devices; Step 12, coating: coating a functional coating on the surface of the material; Step 13, solidification treatment: solidifying the coating in the solution; Step 14: Water washing: remove residual organic solvents and ensure water safety; Step 15, ironing treatment: ironing treatment is performed by multiple ironing rollers; Step 16, drying: dry the material thoroughly; Step 17, cooling: cooling the dried material to room temperature; Step 18, winding: winding the processed material; Step 19: Composite treatment: composite the functional coating and the base layer on the above-treated material.

2. An environmentally friendly, low-carbon, functional synthetic leather and processing technology according to claim 1, Features: The specific steps in step 1 are: Step a1, raw material selection: select polymer materials that meet environmental protection standards and spin them through melt spinning or solution spinning process; Step a2, spinning process: melt spinning heats the polyester fiber to a molten state, extrude it through a spinning nozzle, and form continuous fiber filaments; solution spinning dissolves the material in a suitable solvent, extrude it through a nozzle, and quickly solidifies it into a shape; Step a3, fiber cooling: the spun fiber is cooled by a cooling bath or cooling air to solidify it into shape.

3. An environmentally friendly, low-carbon, functional synthetic leather and processing technology according to claim 2, Features: The specific steps in step 2 include: Step b1, fiber laying: laying the fiber filaments into a mesh and forming a non-woven fabric by heat melting or mechanical reinforcement; Step b2, reinforcement treatment: needle punching to enhance the strength and uniformity of the non-woven fabric.

4. An environmentally friendly, low-carbon, functional synthetic leather and processing technology according to claim 3, Features: The specific steps in step 10 include: Carry out preliminary solidification at 40±2℃ to ensure a firm bond between the filler and the material.

5. An environmentally friendly, low-carbon, functional synthetic leather and processing technology according to claim 4, Features: In step 16, the drying temperature is 150 ± 2°C.

6. An environmentally friendly, low-carbon, functional synthetic leather and processing technology according to claim 5, Features: In step 19, the specific steps include: Step c1, drying the raw materials for preparing the functional coating and the base layer; Step c2, mixing the raw materials in the above step c1 according to the proportion; Step c3, loading the prepared materials in order to ensure the continuity and stability of the processing; Step c4, using a screw extruder to extrude the mixed material to form a uniform sheet; Step c5, unwinding the material wound up in the above step 18, further flattening and stretching the extruded sheet through a casting process to form a base layer and a functional coating, improving the uniformity and surface smoothness of the material, and then laminating the unwound material with the base layer and the functional coating; Step c6: The composite structure is subjected to dry veneer technology, and different functional layers are bonded together by hot pressing technology to form a final product, which is then rolled up.