As a synthetic fiber with excellent performance and controllable cost, polypropylene short fiber is highly used in processing and manufacturing industries and is the core raw material in many subdivisions. Its unique performance advantages and affordable cost enable it to form a differentiated adaptation scenario with polyester fiber. The following will explain in detail its current use in processing and manufacturing industries, its cost level, its differences with polyester fiber, and the various types of products that can be added with this material.

In the processing and manufacturing industry, polypropylene short fiber is used in many core fields such as construction, automobiles, textiles, and medical care, and can be called a "universal material." In the field of construction processing, it is a commonly used reinforcing material for concrete and mortar. It is widely used in engineering products such as roads, bridges, and walls, and can significantly improve the crack resistance and durability of products. In automobile manufacturing, it is often used in interior products such as seat covers, door panel linings, and sound insulation cotton to help lighten vehicles. In the field of textile processing, it can be made into non-woven fabrics, carpets, industrial filter cloths, etc.; in the processing of medical consumables, disposable surgical gowns, inner layers of masks, and other products are also widely used, which shows its popularity in the processing manufacturing industry.

In terms of cost, polypropylene short fiber has significant advantages. Its raw material is polypropylene, which has abundant sources and mature preparation technology. The production process does not require complex polycondensation links, has lower energy consumption, and the overall cost is 20%-30% lower than polyester fiber. At the same time, polypropylene short fiber waste can be recycled and reused, further reducing the overall cost of processing and manufacturing. It is especially suitable for cost-sensitive large-scale production scenarios. This is also one of the key reasons for its wide application in the manufacturing industry.

Compared with polyester fiber, the core differences between the two are reflected in three aspects.

First, the raw materials and processes are different: polypropylene short fiber is made of polypropylene as raw material and made by melt spinning; polyester fiber is made of terephthalic acid and ethylene glycol, which needs to undergo a polycondensation reaction before spinning, and the process is more complicated.

The second is the performance difference: polypropylene short fiber has a lower density (0.90-0.92g/cm³), stronger corrosion resistance, but poor heat resistance (starts to soften at 100-120°C); polyester fiber has excellent heat resistance (melting point 255-260°C) and good stiffness, but the wet strength will decrease by 10%-20%.

The third is processing characteristics: polypropylene short fiber is difficult to dye conventionally, so body dyeing is mostly used; polyester fiber can achieve rich colors through high temperature and high pressure dyeing.

In addition to the above fields, there are many categories of products that can be added with polypropylene short fiber. In industrial processing, geotextiles, filter cloths, ropes and fishing nets, etc.; in daily necessities manufacturing, decorative fabrics such as carpets, sofas, curtains, and stuffed toys; in the field of environmental protection, sewage filter materials, agricultural covering cloth, etc. These products achieve performance upgrades and cost optimization with their high strength, acid and alkali resistance, and lightweight properties. In summary, polypropylene short fiber has become an indispensable material in the processing and manufacturing industry due to its high versatility and low cost. Its differentiated performance with polyester fiber also allows the two to adapt to different manufacturing needs and jointly contribute to industrial upgrading.