Natural food brings a lot of convenience to our lives, and many people have experienced the novelty of the heating packs found in it. Although the heat source of the self-heating pack lies in the heating agent, the non-woven fabric of the food heating pack is the core component that carries the heat released safely by the heating agent. Therefore, the non-woven fabric of the heating pack must have good high-temperature resistance to ensure food safety and usage effectiveness. So, what material is used to produce the high-temperature resistant non-woven fabric for food heating packs? And in what other industries can it be applied?
Raw material of non-woven fabric for food heating packs
The high-temperature resistant nonwoven fabric used in food heating packs primarily utilizes synthetic fiber raw materials with excellent temperature resistance. Commonly used fibers include polypropylene (PP) modified fibers, glass fibers, and high-performance fibers such as aramid. The nonwoven fabric structure, which is made through special production processes such as melt-blown, spunbond, or composite web formation, can withstand temperatures up to 200°C or higher in a short period of time, and does not melt during heating, thus avoiding contamination of the food. The design and manufacturing of food heating pack nonwoven fabric strictly follow food safety standards, not only ensuring its own stability and safety, but also preventing the leakage of heating agents, providing consumers with a safe and reliable self-heating food experience.
Application of non-woven fabric in food heating packs
The application of this high-temperature resistant non-woven material is not limited to the food heating pad industry. Here are its wide-ranging uses in other industries:
1. Filter material: In industrial production, certain processes may generate high-temperature flue gas or liquids. In such cases, high-temperature resistant nonwoven fabrics are required as the filtering medium, such as in high-temperature gas dust removal and hot-blast furnace filter bags.
2. Automotive interior and sound insulation materials: High-temperature resistant nonwoven fabrics are required in the engine compartment or near the exhaust system of some high-performance vehicles to provide thermal and sound insulation effects, ensuring a safe and comfortable interior environment.
3. Food packaging and heating packs: In the field of self-heating food packaging, especially for heating packs in portable self-heating lunch boxes and beverage cups, the packaging materials are required to have good heat resistance to ensure that they do not melt or release harmful substances during the heating process.
4. Composite material reinforcement layer: In the fields of aerospace, new energy vehicles, etc., high-temperature resistant nonwoven fabrics can serve as the substrate for prepreg, capable of withstanding high temperatures during the resin curing process when manufacturing carbon fiber composite materials.
5. Protective clothing and equipment: In the manufacturing of protective clothing and related equipment used by professionals such as firefighters and astronauts, high-temperature resistant nonwoven fabric is one of the essential materials. It can protect the wearer from heat damage in extreme high-temperature environments.
5. Building and insulation materials: In the construction industry, high-temperature resistant nonwoven fabrics can be used as fireproof barriers, roof waterproof layers, and refractory pipe wrapping materials, meeting the requirements of buildings for fire resistance and high temperature resistance.
Dongguan Liansheng Non woven Technology Co., Ltd. was established in May 2020. It is a large-scale non-woven fabric production enterprise integrating research and development, production, and sales. It can produce various colors of PP spunbond non-woven fabrics with a width of less than 3.2 meters from 9 grams to 300 grams.
Post time: Jul-19-2025