Felt is made of wool and is made by processing and bonding. It has important applications in heat preservation and cold preservation. Let’s take a look at it below.
The performance of felt insulation and cold insulation is used in pipe insulation, cold insulation materials, thermal insulation materials for railway vehicles, insulation materials for buildings, and insulation materials for refrigerators. Then the felt is used as a heat preservation and cold preservation material, which requires excellent heat insulation and good weather resistance. In addition, because of its porosity, the felt has an air content of 40-90%, which can exert the effects of heat preservation, cold preservation and heat insulation. In addition, it is advisable to use weather-resistant, flame-retardant, and non-combustible fiber materials. This is an introduction to the application of felt in heat preservation and cold preservation.
Generally, different wool fibers can be used to produce felts of different qualities and types to meet our needs. Fine hair refers to unmyelinated hairs with a diameter of less than 30 microns, and semi-fine hair refers to hairs with a diameter of 30.1-52.5 microns sometimes. , And sometimes hairless two-type hair; and semi-coarse hair refers to the medullated hair fiber between 52.6-75 microns in diameter, this kind of hair is also called occasionally two-type hair.