【Brand Name】：

Hengying Nonwoven

【Specifications】：

60~3000gsm as per yours

【Color】：

white,black,grey

【Item No.】：

1505

【Tech.】：

Open fiber and mix together by needle punched or thermal bonded tech.

【Applications】：

Mainly used for building decoration and thermal insulation, house thermal insulation, sound insulation, automotive interior decoration, conference room, home furnishing, theater decoration, etc.

【Package】：

Roll vacuumed package with PE bag inside and knitted bag outside

【Our purpose】：

Honest and trustworthy, excellent quality, customer first, win-win cooperation

【Product knowledge】：

What is the K value? The K value we usually say in thermal insulation cotton is actually the thermal conductivity of the material, also known as the thermal conductivity.
Take two parallel planes with a distance of 1 meter and an area of 1 square meter within the object perpendicular to the direction of heat conduction. If the temperature difference between the two planes is 1K, the heat conducted from one plane to the other within 1 second is defined as The thermal conductivity of the substance is in Watt·m-1·K-1 (W·m-1·K-1).
Generally, materials with low thermal conductivity are called thermal insulation materials (my country’s national standards stipulate that materials with thermal conductivity not greater than 0.12W/(m·K) at an average temperature of 350℃ are called thermal insulation materials). Materials with a coefficient below 0.05 W/m Celsius are called high-efficiency insulation materials. The thermal conductivity of different substances is different; the thermal conductivity of the same substance is related to its structure, density, humidity, temperature, pressure and other factors. When the water content of the same substance is low and the temperature is low, the thermal conductivity is small. Generally speaking, the thermal conductivity of solids is larger than that of liquids, and liquids are larger than that of gases. The relationship between K value and R value. K value/thermal conductivity is defined as the sum of the unit cross-section and length of the material under the unit temperature difference. The heat directly conducted per unit of time.
.R value refers to the thermal resistance of a material. At a specified temperature, a certain material has the ability to prevent heat from passing through per unit area.

【Building fire protection standards】：

At present, there are mainly 5 fireproof material grades:
Class A: Non-combustible building materials, materials that hardly burn.
Class A1: non-combustible, no open flame
Class A2: Non-combustible, smoke must be measured and qualified.
Class B1: Flame-retardant building materials: Flame-retardant materials have a good flame retardant effect. It is difficult to catch fire in the air or under the action of high temperature, and it is not easy to spread quickly, and the combustion stops immediately when the fire source is removed.
Class B2: Flammable building materials: Flammable materials have a certain flame retardant effect. When exposed to an open flame in the air or under the action of high temperature, it will catch fire immediately, which will easily lead to the spread of fire, such as wooden pillars, wooden roof trusses, wooden beams, wooden stairs, etc.
Class B3: Flammable building materials, without any flame retardant effect, extremely flammable, and have a great fire hazard.
In addition, according to different standards, the classification of fireproof materials is different:
DIN4102: A1, A2, B1, B2, B3
EN13501-1: A1, A2, B, C, D, E, F

【Features】：

The softness, hardness and size can be selected at will, with strong thermal insulation performance and strong fire resistance.

【Certificates】：

ROHS,REACH,MSDS,SGS,ISO,B1 etc..