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The manufacturing method of PP non-woven fabric 

1. Introduction 

PP non-woven fabric is a widely used non-woven material in the field of chemical production, with excellent physical properties and chemical stability. This article will provide a detailed introduction to the manufacturing method of PP non-woven fabric, including material selection, production process, equipment configuration, and other aspects

2、 Raw material selection 

1 Polypropylene resin: Polypropylene resin is the main raw material for PP non-woven fabric, and high molecular weight and high melt index polypropylene resin should be selected to improve the strength and toughness of non-woven fabric

2. Additives: Functional additives such as antioxidants, lubricants, anti-static agents, etc. can be added as needed to improve the performance of non-woven fabrics

3、 The manufacturing process of PP non-woven fabric mainly includes melting extrusion, stretching, web forming, hot pressing and other links. The specific steps are as follows: 

1 Melt extrusion: After mixing polypropylene resin and additives in proportion, they are melted and extruded through a screw extruder to form a continuous sheet-like melt

2. Stretching: The extruded sheet-like melt is subjected to unidirectional or biaxial stretching through a stretching equipment to orient its molecular chains and improve its strength

3. Mesh formation: The stretched melt passes through a cooling device to form a fibrous network structure

4. Hot pressing: The fiber mesh structure is heated and compressed by a hot press to fix it into shape, resulting in PP non-woven fabric

4、 The production of PP non-woven fabric requires the following equipment: 

1 Screw extruder: used for melt extrusion of polypropylene resin and additives

2. Stretching equipment: used to stretch the melt and improve its strength

3. Cooling device: used to cool the stretched melt and form a fiber network structure

4. Hot press machine: used to heat and pressure the fiber mesh structure to fix it into shape

5、 Notes 

1 During the production process, each process parameter should be strictly controlled to ensure stable product quality

2. Regular maintenance and upkeep of equipment to ensure normal operation and improve production efficiency

6、 Product application: PP non-woven fabric has excellent physical properties and chemical stability, and is widely used in the fields of filtration, packaging, insulation, and other aspects of chemical production. For example, in the field of filtration, PP non-woven fabric can be used as a filtering material for liquid filtration, air filtration, etc; In the field of packaging, PP non-woven fabric can be used as a packaging material for packaging and protection of items; In the field of insulation, PP non-woven fabric can be used as insulation material for pipeline and equipment insulation

7、 With the continuous progress of technology and the expansion of applications, the application prospects of PP non-woven fabric in the field of chemical production are becoming increasingly broad. In the future, with the continuous emergence of new technologies and materials, the manufacturing process and performance of PP non-woven fabric will be further improved, providing more possibilities for the development of chemical production fields

8、 Conclusion: In summary, PP non-woven fabric, as an important non-woven material, has broad application prospects in the field of chemical production. By selecting appropriate raw materials, optimizing production processes, and configuring equipment reasonably, high-quality PP non-woven fabrics can be manufactured, providing strong support for the development of chemical production fields.