Thermal insulation film for high-temperature forming, vacuum thermal insulation material using the thermal insulation film, and production method thereof

Abstract

The present invention proposes a heat insulating film having a laminated structure capable of being molded at high temperatures, and also relates to a vacuum heat insulating material in which the above heat insulating film is coated on the outside of a core material, and to the core material through a heat welding process. The invention discloses a preparation method of a vacuum heat insulating material whose outer side is covered with a heat insulating film. The heat insulating film of the present invention can be stably coated on the outside of the core material through a heat welding process at a high temperature.

Description

technical field [0001] The present invention relates to a thermal insulation film, and in more detail, relates to a thermal insulation film capable of thermal fusion molding, a vacuum thermal insulation material including the thermal insulation film, and a method for preparing the vacuum thermal insulation material by thermal fusion molding using the thermal insulation film. Background technique [0002] Recently, vacuum insulation materials are widely used instead of existing insulation materials such as polyurethane or foamed polystyrene. In general, a vacuum insulation material has a structure with a low gas or moisture permeability such as a core material (core) that is applied to a vacuum state as a skin material, and the demand for it has recently been greatly increased due to its excellent heat insulation effect. . [0003] Generally, a heat insulating film used as a skin material of a vacuum heat insulating material has a multi-layer film laminated structure, and in...

AI Technical Summary

Problems solved by technology

However, in the case of bonding the heat insulating film to the outside of the core material by the vacuum high-frequency method, in the process of wrapping the heat insulating film on the outside of the core material, especially when wrapping the edge portion of the core material toward the center, The insulation film cannot be fully bonded to the core material

As a result, air or moisture enters through the heat-insulating film, and the degree of vacuum decreases over time, making it impossible to maintain heat-insulating properties. In particular, there are problems such as deformation of the heat-insulating film under high humidity.

[0004] In addition, conventionally, when the surface and corners of the core material were molded during the process of sealing the heat-insulating film for the manufacture of vacuum heat-insulating materials, wrinkles of the heat-insulating film would occur, resulting in a high possibility of product failure.

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