Production technology of thin film for thermal and breathable fabric

Abstract

The invention discloses a production technology of thin film for thermal and breathable fabric. The production technology comprises the following steps of: firstly, mixing polyurethane resin, thickening agent, PH regulator and solvent together, stirring into colloidal liquid, coating a substrate with the colloidal liquid by blade coating, and carrying out sectional drying to obtain the finished product. By addition of aluminum powder and silver powder, human body temperature is reflected to the clothes, a thermal insulation circulating system is formed inside the clothes, temperature is increased by more than 6 DEG C, functions, such as breathing, warm keeping and protection against wind and rain, are realized, and thus, the thin film produced by the production technology has stronger thermal insulation performance; by three-section type drying, micropores without preservative water solution are formed, meanwhile, polyurethane micropores are formed, and pore diameter of such kind of micropores is greater than that of water vapor molecule and less than that of water molecule, so that the water vapor molecules in vapor state can pass through, and the breathable property is realized. Compared with the prior art, the thin film has the advantages of being breathable, light and thin, windproof and rainproof, and the like, is especially suitable for being used on garment materials, and is particularly suitable for being used on products, such as garment, home textiles and shoes.

Description

【Technical field】 [0001] The invention relates to the field of film manufacturing, in particular to a production process of a film for warm and breathable fabrics. 【Background technique】 [0002] Existing fabrics for producing clothes are generally made of one kind of material, with single characteristics and poor thermal performance. At present, known thermal insulation materials include natural materials such as cotton, silk floss, and wool; man-made materials such as acrylic cotton and polyester cotton Fiber materials, although the single fabric made of these materials has a certain thermal performance, it is still difficult to meet people's increasing wearing requirements. In order to further improve the thermal insulation, it will be necessary to increase the thickness of the fabric, so that the fabric or clothing becomes Bulky and thick, affect the use. [0003] Membrane materials play a pivotal role in modern human social activities. In addition to some properties o...

AI Technical Summary

Problems solved by technology

In addition to some properties of traditional membrane materials such as lightness, softness, transparency or coloring, barrier, protection and other functions that can meet people's growing needs, some new functional membrane materials are changing people's lives. Membrane materials with breathable function It is an important growth pole. At present, there are two types of membrane materials with breathable function in the world. One is the microporous breathable membrane represented by the breathable membrane for diapers and sanitary napkins that is common in daily life, and its thermal insulation performance is poor; the other is The first one is made of polyurethane thermoplastic elastomer by blow molding or extrusion salivation method. The film has high water pressure resistance, high moisture permeability, air permeability, and the product is suitable for a wide temperature range.

But its price is high, and after long-term wearing and washing, due to the action of oil stains and surfactants, the water pressure drops rapidly, and instead loses waterproofness, and its thermal insulation performance is also poor