Spontaneous heating and heat preserving film and application thereof

Abstract

The invention discloses a spontaneous heating and heat preserving film which comprises at least three layers of structure. An outer layer formed by air permeable materials, a heating layer and a heat preserving layer formed by materials with waterproof and heat preserving performance are arranged from outside to inside, wherein the heating layer contains a heating composition capable of emitting heat by making contact with air and is at least in contact with the outer layer, and the upper sealing face of the heating layer is formed by air permeable materials. The spontaneous heating and heat preserving film is simple in structure, is not limited by environmental resources, does not need to be provided with energy by outside energy sources and is safe, stable, even in heating and capable of effectively prolonging heating time and reducing the heating peak temperature. Especially, when the spontaneous heating and heat preserving film serves as a facial mask to be applied to the skin of the face, blood circulation can be improved, pores of the skin are expanded, and sweat and dirt grease are discharged out. When the spontaneous heating and heat preserving film is used together with a traditional notorious facial mask and a skin care product, absorption of the active ingredients of the traditional notorious facial mask and the skin care product by the skin can be improved, the skin care effect can be improved while the using amount of the skin care product is reduced, using is safe and hygienic, and cost is low.

Description

technical field [0001] The invention relates to a self-heating and heat-retaining multilayer film, in particular to a self-heating and heat-retaining multilayer mask applied to the face. Background technique [0002] In the prior art, self-heating patches made by oxidative heating technology, such as warm baby, have been widely used in the medical market for daily warmth and treatment of cold-damp arthralgia. These patches are generally composed of a bag body, a heating material, an adhesive layer, and a peelable covering layer pasted on the outer surface of the adhesive layer. When in use, peel off the covering layer, stick the adhesive layer on the clothes, and face the skin. The most important thing is the air-permeable layer of the bag body. The heat-generating material reacts chemically with the moisture and oxygen in the air to generate heat, so as to keep warm. However, all current self-heating patches have the following defects: 1) The initial temperature is too hig...

AI Technical Summary

Problems solved by technology

However, all current self-heating patches have the following defects: 1) The initial temperature is too high or the heat is lost too quickly, which can easily cause low-temperature burns, and tissue damage occurs at the application site due to heat, or the temperature of the site that needs to be kept warm is kept low , disor...

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