阅读说明：本技术 一种环保四面弹耳机套革及其制备方法 (Environment-friendly four-side elastic earphone sleeve leather and preparation method thereof ) 是由 周志军 陈永 王腾飞 汪旗 叶琦 顾志豪 彭文斌 于 2020-07-22 设计创作，主要内容包括：本发明公开了一种环保四面弹耳机套革,其特征在于,包括依次设置的：水性表皮层聚氨酯树脂；流平剂0.1～1重量份；消泡剂0.1～0.5重量份；架桥剂1～5重量份；色浆3～20重量份；水性中间层聚氨酯树脂90～110重量份；流平剂JN3-0520.1～1重量份；发泡剂JN3-0300.1～1重量份；稳泡剂JN3-0310.1～1重量份；色浆3～30重量份；水性接着层聚氨酯树脂HG3-001：90～110重量份；流平剂JN3-052：0.1～1重量份；发泡剂JN3-030：0.1～1重量份；稳泡剂JN3-031：0.1～1重量份；该复合底布层为高弹性尼龙针织布。本发明具有环保、手感柔软的特点。(The invention discloses environment-friendly four-side elastic earphone sleeve leather which is characterized by comprising the following components in sequence: an aqueous skin layer polyurethane resin; 0.1-1 part by weight of a leveling agent; 0.1-0.5 part by weight of a defoaming agent; 1-5 parts of a bridging agent; 3-20 parts of color paste; 90-110 parts by weight of aqueous intermediate layer polyurethane resin; flatting agent JN 3-0520.1-1 parts by weight; foaming agent JN 3-0300.1-1 weight part; foam stabilizer JN 3-0310.1-1 weight part; 3-30 parts of color paste; aqueous adhesive layer polyurethane resin HG 3-001: 90-110 parts by weight; leveling agent JN 3-052: 0.1 to 1 part by weight; foaming agent JN 3-030: 0.1 to 1 part by weight; foam stabilizer JN 3-031: 0.1 to 1 part by weight; the composite bottom cloth layer is high-elasticity nylon knitted cloth. The invention has the characteristics of environmental protection and soft hand feeling.)

1. The utility model provides an environmental protection four sides bullet earphone sleeve leather which characterized in that, including setting gradually:

aqueous skin layer

Aqueous interlayer

Aqueous adhesive layer

Composite base cloth layer

The composite bottom cloth layer is high-elasticity nylon knitted cloth.

2. The environmentally friendly elastic four-sided headphone cover leather according to claim 1, wherein the viscosity is 3000 to 10000cps/25 ℃, and the coating amount is 150 to 250 g/m.

3. The environmentally friendly elastic four-sided headphone cover leather according to claim 1, wherein the viscosity is 3000 to 20000cps/25 ℃, and the coating weight is 100 to 350 g/m.

4. The environmentally friendly elastic four-sided headphone cover leather according to claim 1, wherein the viscosity is 5000 to 20000cps/25 ℃, and the coating weight is 100 to 250 g/m.

5. The preparation method of the environment-friendly four-side elastic earphone sleeve leather according to any one of claims 1 to 4, which comprises the following steps:

s1 compounding base cloth: compounding hot melt adhesive with compounding machine

S2 dry production line:

1) unreeling release paper → coating a surface layer, namely coating an aqueous surface layer, wherein the coating position is 0.03-0.15mm → drying and cooling, and the temperature of a used drying oven is 60-150 ℃;

2) coating a water-based middle layer and water-based slurry, wherein the coating knife position is 0.1-0.5 mm, and drying and cooling the water-based middle layer and the water-based slurry, and the temperature of a used drying oven is 60-150 ℃;

3) coating a water-based adhesive layer, wherein the coating knife position is 0.1-0.3 mm, pre-drying, the temperature of a used drying oven is 60-120 ℃, the retention time in the drying oven is 50-120 s, drying is carried out after the composite base fabric is attached, the temperature of the used drying oven is 60-150 ℃, and the finished product is separated;

4) back cloth separation

5) And (4) kneading veins, namely adding water into the finished product by a continuous kneading machine to knead veins, drying and shaping.

6. The method for preparing environment-friendly four-sided elastic earphone sleeve leather according to claim 5, wherein the composite base fabric layer is four-sided elastic high-elasticity nylon knitted fabric, and the woven fabric is compounded through hot melt adhesive.

Technical Field

The invention relates to the technical field of clothing leather, in particular to environment-friendly four-side elastic earphone sleeve leather and a preparation method thereof.

Background

The earmuffs refer to earmuffs with leather surfaces and are made of various materials and processes. The earphone is used for relieving the oppression feeling to the head of a human body when the earphone is worn. In the prior art, the base fabric is elastic in four directions, so that the difficulty is increased in the production process. The earmuffs in the prior art are divided into real leather earmuffs, simulated leather earmuffs and common earmuffs. In the prior art, the base fabric is elastic in four directions, so that the difficulty is increased in the production process.

However, the following disadvantages tend to be present: 1. the existing base cloth has four-way elasticity and great difficulty in production and operation; 2. the existing common earmuff production process comprises the following steps: the process of the solvent-based dry coating (surface layer) and the wet solvent-based coating is combined, and the coating contains harmful solvents and does not meet the requirement of environmental protection; 3. the hand feeling is not good.

In conclusion, in order to overcome the defects in the prior art, the invention designs the environment-friendly four-side elastic earphone sleeve leather with soft hand feeling and the preparation method thereof.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the invention designs environment-friendly four-side elastic earphone sleeve leather with soft hand feeling and a preparation method thereof.

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

the utility model provides an environmental protection four sides bullet earphone sleeve leather, including setting gradually:

aqueous skin layer

Aqueous interlayer

Aqueous adhesive layer

Composite base cloth layer

The composite bottom cloth layer is high-elasticity nylon knitted cloth.

The scheme is further improved, the viscosity is 3000-10000 cps/25 ℃, and the coating weight is 150-250 g/m.

The scheme is further improved, the viscosity is 3000-20000 cps/25 ℃, and the coating weight is 100-350 g/m.

The scheme is further improved, the viscosity is 5000-20000 cps/25 ℃, and the coating weight is 100-250 g/m.

A preparation method of environment-friendly four-side elastic earphone sleeve leather comprises the following steps:

s1 compounding base cloth: compounding hot melt adhesive with compounding machine

S2 dry production line:

1) unreeling release paper → coating a surface layer, namely coating an aqueous surface layer, wherein the coating position is 0.03-0.15mm → drying and cooling, and the temperature of a used drying oven is 60-150 ℃;

2) coating a water-based middle layer and water-based slurry, wherein the coating knife position is 0.1-0.5 mm, and drying and cooling the water-based middle layer and the water-based slurry, and the temperature of a used drying oven is 60-150 ℃;

3) coating a water-based adhesive layer, wherein the coating knife position is 0.1-0.3 mm, pre-drying, the temperature of a used drying oven is 60-120 ℃, the retention time in the drying oven is 50-120 s, drying is carried out after the composite base fabric is attached, the temperature of the used drying oven is 60-150 ℃, and the finished product is separated;

4) back cloth separation

5) And (4) kneading veins, namely adding water into the finished product by a continuous kneading machine to knead veins, drying and shaping.

As a further improvement of the scheme, the composite base fabric layer is a four-side elastic high-elasticity nylon knitted fabric, and the woven fabric is compounded through a hot melt adhesive.

Compared with the existing product, the environment-friendly four-side elastic earphone sleeve leather and the preparation method thereof provided by the invention have the following beneficial effects:

1) the design of the water-based coating uses the PU resin which takes water as a solvent to carry out the process formula design of the surface, the middle layer and the adhesion layer, thereby avoiding the use of harmful solvents, and more specifically: the formula design of the water-based surface coating comprises the following steps: high solid content, skin-friendly surface and high-frequency adhesion; the optimized selection of the water-based middle layer can adjust the foaming multiplying power according to the requirement by selecting high solid content (30-60 percent), adjusting the using amount of a foam stabilizer and a foaming agent and combining the application of water-based automatic foaming equipment, thereby meeting the requirements of hand feeling and physical properties; the water-based adhesive layer resin is designed through a foaming process, so that the contact area of the resin and a substrate is reduced, and the design of a non-foaming coating is obviously improved in soft hand feeling;

2) the double-foaming coating design can more accurately control the size of the foam holes, adjust the foaming multiplying power of each layer and meet the design requirements of products;

3) the middle foaming layer aqueous resin achieves soft hand feeling by adjusting the foaming ratio of 50-200% times;

4) the water-based foaming coating is attached, so that the attaching property with the base fabric is met, the sizing amount of the base slurry is accurately controlled by reducing the density of the coating, the influence of the slurry seepage on the hand feeling is reduced, and the finished product is full and soft in hand feeling;

5) the final product is subjected to the water squeezing and pattern kneading process, so that the final hand feeling of the finished product is softer and plump.

6) DMF is residue-free and environment-friendly, and the water-based coating is PU slurry with water as a solvent, and is green and environment-friendly because no harmful solvent is added in the using process.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described with reference to the following embodiments: