Warming film for down jackets and manufacturing process of warming film

Abstract

The invention provides a warming film for a down jacket and a manufacturing process of the warming film. The temperature increasing film is prepared from polyurethane resin, DMF, ethyl ester, a temperature increasing material, a flatting agent and silicon dioxide. The heat-insulating fabric is made of superfine fibers, so that a unit space can be filled with more air, and the heat-insulating performance is greatly improved. In addition, the warming film is light in material, comfortable to wear and free of extra burden to the body. The moisture-proof and air-permeable performance is excellent, the fabric can be kept dry in a humid environment, and the warm-keeping effect is not affected. Experiments prove that the warming film material is superior to a traditional down feather material in the aspects of warm keeping performance, moisture resistance and air permeability, and is suitable for being applied to clothes in an extremely cold environment. The problem that in the prior art, a thermal insulation material cannot continuously conduct heat preservation and heat insulation in winter is solved, and the thermal insulation material has wide application prospects.

Description

Technical Field

[0001] The invention belongs to the field of textile materials, and in particular relates to a warming film for down clothing and a manufacturing process thereof. Background Art

[0002] Winter clothing currently on the market, especially down jackets, have a certain warmth-keeping effect, but in extremely cold environments, heat is still easily lost and cannot be continuously insulated. Existing thermal insulation materials such as down and cotton, although light and soft, are insufficient in terms of warmth-keeping performance and moisture-proof breathability, especially in humid environments, where the warmth-keeping effect will be significantly reduced. In addition, traditional thermal insulation materials are difficult to maintain a good warmth-keeping effect during high-intensity activities.

[0003] In recent years, new thermal insulation materials have gradually attracted attention, such as microfiber materials, which can fill more air per unit space, thereby retaining more heat and providing better thermal insulation performance than traditional thermal insulation materials. However, the application of these new materials has not been widely promoted, especially in down jackets, which is still a technical gap. Therefore, there is an urgent need for an efficient warming membrane material that can continuously keep warm and insulate and slow down heat loss. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a warming film for down jackets that can continuously keep heat and insulate and slow down heat loss, so as to solve the problem that the existing down jackets have insufficient thermal insulation performance in winter.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A warming film for down jackets consists of the following components: polyurethane resin: 55-57%; DMF: 15-17%; ethyl ester: 15-17%; warming material: 5-6%; black slurry: 2-4%; and leveling agent: 0.2-0.3%.

[0007] The components of the above-mentioned warming film are preferably: polyurethane resin: 56%; DMF: 16.6%; ethyl ester: 15.6%; warming material: 5.56%; black: 3%; leveling agent: 0.24%; silicon dioxide: 3%.

[0008] Based on the above technical solution, the above-mentioned warming material is preferably polyester and polyethylene.

[0009] The present invention also provides a process for manufacturing a warming film for down clothing, comprising the following steps:

[0010] a. Preparation of raw rubber;

[0011] b. Stirring: Stir according to the corresponding proportions in the ingredient list. The stirring time is 50 minutes in summer and 70 minutes in winter. The mixer speed is 900-1200 rpm;

[0012] c. Add warming material: add warming material and solvent in a ratio of 2:1;

[0013] d. Stir thoroughly: Stir thoroughly with the original rubber, refer to step 2;

[0014] e.Standing: Stand in a completely sealed state for more than 48 hours;

[0015] f. Main machine production: the line speed is maintained at 15 m / min, and the drying temperature is controlled at 60-80-120-140-150-155°C;

[0016] g. Online testing: staff conduct online testing;

[0017] h. Finished product inspection: Staff conduct finished product inspection.

[0018] Beneficial effects of the present invention:

[0019] The warming film material of the present invention has the remarkable advantages of excellent thermal insulation performance, light weight, moisture resistance and breathability, etc. It can provide excellent thermal insulation effect in various extreme environments, while improving the comfort and freedom of movement of the wearer.

[0020] Excellent thermal insulation performance: Made of ultra-fine fibers, it can fill more air in a unit space, thereby retaining more heat, and its thermal insulation performance is better than traditional down materials.

[0021] Lightweight: The warming membrane material is light and comfortable to wear without causing any extra burden on the body.

[0022] Moisture-proof and breathable: It has good moisture-proof and breathable properties, can stay dry in a humid environment, and the warmth-keeping effect is not affected. DETAILED DESCRIPTION

[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0024] The composition formula of the warming film is as follows:

[0025] Polyurethane resin: 56%; DMF: 16.6%; Ethyl ester: 15.6%; Warming material: 5.56%; Black paste: 3%; Leveling agent: 0.24%; Silica: 3%.

[0026] The specific production process is as follows:

[0027] a. Preparation of raw rubber;

[0028] b. Stirring: Stir according to the corresponding proportions in the ingredient list. The stirring time is 50 minutes in summer and 70 minutes in winter. The mixer speed is 900-1200 rpm;

[0029] c. Add warming material: add warming material and solvent in a ratio of 2:1;

[0030] d. Stir thoroughly: Stir thoroughly with the original rubber, refer to step 2;

[0031] e.Standing: Stand in a completely sealed state for more than 48 hours;

[0032] f. Main machine production: the line speed is maintained at 15 m / min, and the drying temperature is controlled at 60-80-120-140-150-155°C;

[0033] g. Online testing: staff conduct online testing;

[0034] h. Finished product inspection: Staff conduct finished product inspection.

[0035] In order to evaluate the thermal insulation performance, moisture resistance and air permeability of the warming membrane material of the present invention, the following experiments were conducted on the product prepared in this embodiment:

[0036] 1. Thermal insulation performance test:

[0037] Test standard: Tested in accordance with GB / T 11048-2008 "Determination of static thermal resistance and moisture resistance of textiles".

[0038] Experimental method: The warming film material and traditional down material are made into samples respectively, placed in a thermal resistance measuring instrument, and the thermal resistance values ​​under different temperature conditions are recorded.

[0039] Experimental results: The thermal resistance of the warming film material is 0.850 m²·K / W at 0℃ and 1.150 m²·K / W at -20℃; the thermal resistance of the traditional down material is 0.600 m²·K / W at 0℃ and 0.900 m²·K / W at -20℃. The thermal resistance of the warming film material is significantly higher than that of the traditional down material, indicating that it has better thermal insulation performance.

[0040] 2. Moisture-proof performance test:

[0041] Test standard: Tested in accordance with GB / T 12704-2009 "Determination of hygroscopicity and water absorption of textiles".

[0042] Experimental method: Make samples of warming membrane material and traditional down material respectively, place them in an environment with a relative humidity of 90%, and measure the change in moisture content of the samples over a certain period of time.

[0043] Experimental results: After 24 hours, the moisture content of the warming membrane material increased by 0.8%, while the moisture content of the traditional down material increased by 5%. The moisture content of the warming membrane material in a high humidity environment is significantly lower than that of the traditional down material, indicating that it has better moisture-proof performance.

[0044] 3. Air permeability test:

[0045] Test standard: Tested in accordance with GB / T 5453-1997 "Determination of Air Permeability of Textile Fabrics".

[0046] Experimental method: Use an air permeability tester to measure the air permeability of warming membrane materials and traditional down materials respectively.

[0047] Experimental results: The air permeability of the warming membrane material is 800 mm / s, and the air permeability of the traditional down material is 600 mm / s. The air permeability of the warming membrane material is significantly higher than that of the traditional down material, indicating that it has better air permeability.

[0048] The above experimental data verify that the warming membrane material of the present invention is superior to traditional down materials in terms of warmth retention, moisture resistance and breathability, and is suitable for clothing applications in extremely cold environments.

Claims

1. A warming film for down clothing, characterized in that: The warming film is composed of the following components: Polyurethane resin: 55~57% DMF: 15~17% Ethyl ester: 15~17% Warming material: 5~6% Black pulp: 2~4% Leveling agent: 0.2~0.3% Silicon dioxide: 2~4%.

2. A warming film for down clothing, characterized in that: The warming film is composed of the following components: Polyurethane resin: 56% DMF: 16.6% Ethyl ester: 15.6% Warming materials: 5.56% Black pulp: 3% Leveling agent: 0.24% Silicon dioxide: 3%.

3. A warming film for down clothing according to claim 1, characterized in that: The temperature increasing materials are polyester and polyethylene.

4. A process for producing a warming film for down clothing, characterized in that: The following steps are involved: a. Preparation of raw rubber; b. Stirring: Stir according to the corresponding proportions in the ingredient list. The stirring time is 50 minutes in summer and 70 minutes in winter. The mixer speed is 900-1200 rpm; c. Add warming material: add warming material and solvent in a ratio of 2:1; d. Stir thoroughly: Stir thoroughly with the original rubber, refer to step 2; e.Standing: Stand for more than 48 hours in a completely sealed state; f. Main machine production: the line speed is maintained at 15 m / min, and the drying temperature is controlled at 60-80-120-140-150-155°C; g. Online testing: staff conduct online testing; h. Finished product inspection: Staff conduct finished product inspection.