阅读说明：本技术 一种天然纤维增强抑菌、排汗、透湿四面弹力皮革 (Natural fiber reinforced antibacterial, sweat-releasing and moisture-permeable four-side elastic leather ) 是由 李丹 于 2021-08-10 设计创作，主要内容包括：本发明公开了一种天然纤维增强抑菌、排汗、透湿四面弹力皮革,其特征在于,该皮革由牛皮纤维四面弹针织布、湿法贝斯层和干法贴面层组成；其中,所述牛皮纤维四面弹针织布100-200份；所述湿法贝斯层200-300份；所述干法贴面层300-400份。与现有技术相比,本发明的皮革产品的亲肤、透气、透湿以及抑菌功能,都是对传统皮革的革命性突破,解决了传统人造革不能贴身服用或者是贴身穿不舒服的痛点,极大增加了皮革的应用范围和消费者的穿着舒适性。(The invention discloses natural fiber reinforced bacteriostatic, sweat-releasing and moisture-permeable four-side elastic leather which is characterized by consisting of cow leather fiber four-side elastic knitted fabric, a wet method bass layer and a dry method veneering layer; wherein, the cow leather fiber four-side elastic needle weaving cloth is 100-200 parts; 200-300 parts of the wet-process bass layer; the dry laminated surface layer is 300-400 parts. Compared with the prior art, the leather product has the functions of skin friendliness, air permeability, moisture permeability and bacteriostasis, and is a revolutionary breakthrough to the traditional leather, the pain point that the traditional artificial leather cannot be worn next to the skin or is uncomfortable to wear next to the body is solved, and the application range of the leather and the wearing comfort of consumers are greatly increased.)

1. A natural fiber reinforced bacteriostatic sweat-releasing moisture-permeable four-side elastic leather is characterized in that the leather consists of a cow leather fiber four-side elastic knitted fabric, a wet method bass layer and a dry method veneering layer; wherein, the cow leather fiber four-side elastic needle weaving cloth is 100-200 parts; 200-300 parts of the wet-process bass layer; the dry laminated surface layer is 300-400 parts.

2. The natural fiber reinforced bacteriostatic, sweat-releasing and moisture-permeable four-sided elastic leather according to claim 1, wherein the wet-process Bass layer comprises a soft polyurethane resin, an ultra-soft polyurethane resin, dimethylformamide, a cell regulator, a color paste, ramie fiber powder, chitin powder, a dispersant and a waterproof assistant.

3. The natural fiber reinforced bacteriostatic, sweat-releasing and moisture-permeable four-sided elastic leather according to claim 1, wherein the dry laminated surface layer is composed of surface layer slurry and a bottom material; wherein the surface layer slurry comprises dimethyl formamide, a color sheet and soft veneering polyurethane resin; the bottom layer slurry contains dimethyl formamide, color chips and soft faced polyurethane resin.

Technical Field

The invention relates to the technical field of leather, in particular to natural fiber reinforced bacteriostatic, sweat-releasing and moisture-permeable four-side elastic leather.

Background

At present, the bacteriostatic function of materials in the field of artificial leather is mainly realized by chemical bacteriostatic aids such as silver ions or copper ions, the dosage of the chemical aids needs to be strictly controlled, if the chemical aids are excessively used, the chemical aids can cause harm to the health of people, and in daily use, the bacteriostatic function can be gradually weakened or even lost along with the increase of the abrasion and cleaning times.

Disclosure of Invention

In view of the above, the invention provides a natural fiber reinforced bacteriostatic, sweat-releasing and moisture-permeable four-side elastic leather with skin-friendly, breathable, moisture-permeable and bacteriostatic functions.

In order to achieve the purpose, the invention provides the following technical scheme:

a natural fiber reinforced bacteriostatic sweat-releasing moisture-permeable four-side elastic leather is characterized in that the leather consists of a cow leather fiber four-side elastic knitted fabric, a wet method bass layer and a dry method veneering layer; wherein, the cow leather fiber four-side elastic needle weaving cloth is 100-200 parts; 200-300 parts of the wet-process bass layer; the dry laminated surface layer is 300-400 parts.

Preferably, in the natural fiber reinforced antibacterial, sweat releasing and moisture permeable four-side elastic leather, the wet-process base layer comprises a soft polyurethane resin, an ultra-soft polyurethane resin, dimethylformamide, a cell regulator, a color paste, ramie fiber powder, chitin powder, a dispersing agent and a waterproof auxiliary agent.

Preferably, in the natural fiber reinforced antibacterial, sweat-discharging and moisture-permeable four-side elastic leather, the dry-process laminated surface layer consists of surface layer slurry and a backing material; wherein the surface layer slurry comprises dimethyl formamide, a color sheet and soft veneering polyurethane resin; the bottom layer slurry contains dimethyl formamide, color chips and soft faced polyurethane resin.

According to the technical scheme, compared with the prior art, the leather product has the functions of skin friendliness, air permeability, moisture permeability and bacteriostasis, and is a revolutionary breakthrough to the traditional leather, so that the problem that the traditional artificial leather cannot be worn next to the skin or is uncomfortable to wear next to the body is solved, and the application range of the leather and the wearing comfort of consumers are greatly increased; the leather fiber is used for perfectly replacing traditional chemical bacteriostatic auxiliaries such as silver ions and copper ions, the natural bacteriostatic function of the fabric is realized, the product is prepared by combining the leather breathable coating process, the skin-friendly, breathable and bacteriostatic functions of traditional leather are greatly improved, and the application range of the leather is expanded.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention integrates the production process of textile and artificial leather, utilizes leftover waste materials generated in the production process of the traditional cowhide, changes the waste materials into the cowhide fibers through a series of recovery processes (material selection, impregnation, degreasing, opening and impurity removal), and then blends the cowhide fibers and pure cotton fibers to prepare the collagen fiber yarns. The collagen fiber yarn is made into leather base cloth meeting the leather making requirement through a knitting weaving process, and finally the artificial leather fabric with multiple purposes is made through a leather wet process and a coating ventilation process, has four-side elasticity, comfortable touch, softness, fineness, good ventilation property, sweat releasing and moisture permeability, and has natural antibacterial and mildew-proof functions. The invention relates to the field of textile and artificial leather, and is a major breakthrough in the field of artificial leather.

Example 1:

a natural fiber reinforced bacteriostatic sweat-releasing moisture-permeable four-side elastic leather is composed of a cowhide fiber four-side elastic knitted fabric, a wet-process bass layer and a dry-process veneering layer, wherein the material proportion of each layer is as follows:

wherein the content of the first and second substances,

105 parts of cow leather fiber four-side stretch knitting fabric;

the wet method bass layer comprises the following components in parts by weight: 50 parts of soft polyurethane resin, 50 parts of super-soft polyurethane resin, 70 parts of dimethylformamide, 4 parts of a foam pore regulator, 1 part of color paste, 15 parts of ramie fiber powder, 10 parts of chitin powder, 0.2 part of a dispersing agent and 0.2 part of a waterproof auxiliary agent;

the dry-process laminated surface layer consists of surface layer slurry and a bottom material, and the surface layer slurry is proportioned as follows: 70 parts of dimethylformamide, 6 parts of color chips and 70 parts of soft faced polyurethane resin; proportioning of bottom layer slurry: 90 parts of dimethylformamide, 5 parts of color chips and 110 parts of soft faced polyurethane resin;

the method comprises the following specific steps:

A. preparing a wet base layer: firstly, mixing dimethylformamide, chitin powder and ramie fiber superfine powder according to a proportion, quickly stirring for 10 minutes at a speed of 200 r/min, then sequentially adding a foam cell regulating auxiliary agent, a waterproof auxiliary agent, super-soft polyurethane resin, a dispersing agent and color paste according to a proportion, stirring for 25 minutes at a speed of 600 r/min for vacuum defoaming to form polyurethane slurry, then soaking the non-woven leather cloth in a water tank containing 1% of anionic surfactant, heating by a ironing roller to remove water in the non-woven leather cloth, uniformly coating the polyurethane slurry on the non-woven leather cloth at the temperature of 80-90 ℃, then, the mixture is solidified in an aqueous solution with the content of dimethylformamide of 15 percent for 10 minutes, the temperature of the aqueous solution is 35 ℃, and after the solidification is finished, the cowhide fiber bass is obtained by washing with water and drying at the temperature of 100 ℃;

B. preparing a dry laminated surface layer: respectively mixing and stirring the surface layer slurry and the bottom layer slurry according to the mixture ratio to obtain the surface layer slurry and the bottom layer slurry, coating the bottom layer slurry on release paper, drying and cooling the release paper, then coating the surface layer slurry, and drying and coiling the release paper to obtain a dry-process laminated surface layer;

C. preparing finished leather: b, attaching the wet base layer in the step A to the dry attaching surface layer in the step B through attaching equipment, drying and cooling the attaching surface layer, and peeling off release paper to obtain finished leather;

D. post-stage treatment: and D, putting the finished leather prepared in the step C into a softener aqueous solution added with 3% and carrying out water kneading for 20 minutes by a grain kneading device, heating the water to 40 ℃, rolling and drying the water kneaded product, carrying out dry kneading and drying, drying the product for 15 minutes at 60 ℃, and rolling the product to prepare the four-side elastic leather with the thickness of 0.65-0.70 mm.

Example 2:

a natural fiber reinforced bacteriostatic sweat-releasing moisture-permeable four-side elastic leather is composed of a cowhide fiber four-side elastic knitted fabric, a wet-process bass layer and a dry-process veneering layer, wherein the material proportion of each layer is as follows:

wherein the content of the first and second substances,

106 parts of cow leather fiber four-side stretch knitting fabric;

the wet method bass layer comprises the following components in parts by weight: 60 parts of soft polyurethane resin, 80 parts of super-soft polyurethane resin, 80 parts of dimethylformamide, 2 parts of foam hole regulator, 1 part of color paste, 15 parts of ramie fiber powder, 10 parts of chitin powder and 0.2 part of dispersing agent

The dry-process laminated surface layer consists of surface layer slurry and a bottom material, and the surface layer slurry is proportioned as follows: 60 parts of dimethylformamide, 3 parts of color chips and 70 parts of soft veneering polyurethane resin; proportioning of bottom layer slurry: 100 parts of dimethylformamide, 3 parts of color chips and 100 parts of soft faced polyurethane resin

The method comprises the following specific steps:

A. preparing a wet base layer: firstly, mixing dimethylformamide, chitin powder and ramie fiber superfine powder according to a proportion, quickly stirring for 10 minutes at a speed of 200 r/min, then sequentially adding a foam cell regulating auxiliary agent, a waterproof auxiliary agent, super-soft polyurethane resin, a dispersing agent and color paste according to a proportion, stirring for 30 minutes at a speed of 600 r/min for vacuum defoaming to form polyurethane slurry, then soaking the non-woven leather cloth in a water tank containing 1% of anionic surfactant, heating by a ironing roller to remove water in the non-woven leather cloth, uniformly coating the polyurethane slurry on the non-woven leather cloth at the temperature of 80-90 ℃, then, the cow leather fiber is solidified in an aqueous solution with the content of dimethylformamide of 15 percent for 15 minutes, the temperature of the aqueous solution is 40 ℃, and after solidification, the cow leather fiber is washed by water and dried at 120 ℃ to obtain cow leather fiber bass;

B. preparing a dry laminated surface layer: respectively mixing and stirring the surface layer slurry and the bottom layer slurry according to the mixture ratio to obtain the surface layer slurry and the bottom layer slurry, coating the bottom layer slurry on release paper, drying and cooling the release paper, then coating the surface layer slurry, and drying and coiling the release paper to obtain a dry-process laminated surface layer;

C. preparing finished leather: b, attaching the wet base layer in the step A to the dry attaching surface layer in the step B through attaching equipment, drying and cooling the attaching surface layer, and peeling off release paper to obtain finished leather;

D. post-stage treatment: and D, putting the finished leather prepared in the step C into a softener aqueous solution added with 3% and carrying out water kneading for 20 minutes through a grain kneading device, carrying out water temperature of 30-40 ℃, carrying out water kneading, rolling and drying, carrying out dry kneading and drying, and drying for 15 minutes at 60 ℃ to prepare the super-soft cowhide fiber four-side elastic leather, wherein the gram weight of the finished leather is 260-275 g per square meter.

Example 3:

a natural fiber reinforced bacteriostatic sweat-releasing moisture-permeable four-side elastic leather is composed of a cowhide fiber four-side elastic knitted fabric, a wet-process bass layer and a dry-process veneering layer, wherein the material proportion of each layer is as follows:

wherein the content of the first and second substances,

110 parts of cow leather fiber four-side stretch knitting fabric;

the wet method bass layer comprises the following components in parts by weight: 30 parts of soft polyurethane resin, 70 parts of super-soft polyurethane resin, 70 parts of dimethylformamide, 3 parts of foam hole regulator, 2 parts of color paste, 18 parts of ramie fiber powder, 10 parts of chitin powder and 0.2 part of dispersing agent

The dry-process laminated surface layer consists of surface layer slurry and a bottom material, and the surface layer slurry is proportioned as follows: 80 parts of dimethylformamide, 6 parts of color chips and 80 parts of soft faced polyurethane resin; proportioning of bottom layer slurry: 90 parts of dimethyl formamide, 4 parts of color chips and 100 parts of soft faced polyurethane resin

The method comprises the following specific steps:

A. preparing a wet base layer: firstly, mixing dimethylformamide, chitin powder and ramie fiber superfine powder according to a proportion, quickly stirring for 8 minutes at a speed of 200 r/min, then sequentially adding a foam cell regulating auxiliary agent, a waterproof auxiliary agent, super-soft polyurethane resin, a dispersing agent and color paste according to a proportion, stirring for 30 minutes at a speed of 600 r/min for vacuum defoaming to form polyurethane slurry, then soaking the non-woven leather cloth in a water tank containing 1% of anionic surfactant, heating by a ironing roller to remove water in the non-woven leather cloth, uniformly coating the polyurethane slurry on the non-woven leather cloth at the temperature of 80-100 ℃, then, the mixture is solidified in an aqueous solution with the content of dimethylformamide of 15 percent for 10 minutes, the temperature of the aqueous solution is 30 ℃, and the cowhide fiber bass is obtained after solidification and then is washed by water at 80 ℃;

B. preparing a dry laminated surface layer: respectively mixing and stirring the surface layer slurry and the bottom layer slurry according to the mixture ratio to obtain the surface layer slurry and the bottom layer slurry, coating the bottom layer slurry on release paper, drying and cooling the release paper, then coating the surface layer slurry, and drying and coiling the release paper to obtain a dry-process laminated surface layer;

C. preparing finished leather: b, attaching the wet base layer in the step A to the dry attaching surface layer in the step B through attaching equipment, drying and cooling the attaching surface layer, and peeling off release paper to obtain finished leather;

D. post-stage treatment: and D, putting the finished leather prepared in the step C into a softener aqueous solution added with 3% and carrying out water kneading for 20 minutes by a grain kneading device, carrying out water temperature of 40 ℃, rolling and drying after water kneading, carrying out dry kneading and drying, and drying at 60 ℃ to prepare the super-soft cowhide fiber four-side elastic leather, wherein the thickness of the finished leather is 0.6-0.65mm, and the unit gram weight of the finished leather is 230-245 g per square meter.

The super-soft cowhide fiber artificial leather is subjected to tests on antibacterial property, color fastness, softness and physical properties, the antibacterial rate of a collagen fiber leather finished product reaches over 90 percent, the test result of ISO12947-2:1998 Martindale reaches over 60000 turns, and the color fastness of washing and friction reaches over 3 grades.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.