Definition of Hot Rolling and Hot Bonding
Hot rolling refers to the process of processing thermoplastic polymer materials at high temperatures and pressing them into uniformly thick sheets or films using a rolling mill. Hot bonding refers to heating two or more layers of hot-melt polymer materials at high temperatures to fuse them together and form a new material.
The difference between hot rolling and hot bonding
1. Different processing methods: Hot rolling is the process of pressing materials into sheets or films through mechanical force, while thermal bonding is the process of melting multiple layers of materials together at high temperatures.
2. Different material characteristics: Hot rolled materials usually have high tensile strength and stiffness, while hot bonded materials are characterized by softness, bendability, and ease of forming.
3. Different production costs: The production cost of hot rolling is higher because it requires specialized equipment and high temperature conditions, while the production cost of hot bonding is relatively lower because only simple heating equipment is needed.
4. Different application fields: Hot rolled materials are usually used to manufacture high-strength and high stiffness structural components, such as automotive interior panels, building materials, filters, etc; And thermal bonding materials are usually used to manufacture flexible packaging materials, medical products, hygiene products, etc.
Advantages and disadvantages of hot rolling and hot bonding
The advantage of hot rolling is that the produced material has high strength and stiffness, making it suitable for manufacturing structural components that require high strength and stiffness. But its disadvantage is that the production cost is high, and pollution is easily generated during the processing.
The advantage of thermal bonding is that it has lower production costs and is suitable for manufacturing flexible packaging materials, medical products, etc. But its disadvantage is that the mechanical properties of the product are poor, and it is not suitable for manufacturing structural components that require high strength and high stiffness.
Summary
Hot rolling and hot bonding are commonly used processing methods in non-woven materials, and their application fields and characteristics are different. When choosing a processing method, it is necessary to consider the characteristics and usage needs of the product comprehensively.
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: Jan-08-2025