What is the raw material of pp non-woven fabric
In the production of non-woven fabrics, polypropylene (PP) is often used as the raw material of non-woven fabrics. And polypropylene (PP) is divided into new pellets, powder, regrind and calcium powder. The production of different raw materials affects the price of non-woven fabrics, so, what is polypropylene (PP)? What is the difference between brand new pellets, powder, regrind and calcium powder? Below is a brief introduction for you.
Polypropylene (PP)
PP (polypropylene), the Chinese name is polypropylene, is a polymer obtained by free radical polymerization of propylene monomers. , Odorless, tasteless milky white high crystalline shape, belonging to crystalline material. At present, there are many varieties of polypropylene resin produced in China, and the production batch is relatively large-scale flat wire grade polypropylene, biaxially oriented polypropylene special resin (BOPP special material), injection grade polypropylene and ethylene propylene polypropylene and so on.
Characteristics of polypropylene (PP)
Polypropylene resin has the lowest density among general-purpose plastics, and has good mechanical properties, good rigidity, wear resistance, and relatively high hardness; Good heat resistance, poor cold resistance; no water absorption, good chemical stability, but not sunlight resistance, poor thermal stability; flammable, with oil smell when burning; good electrical insulation, voltage resistance, transparent film, air and Poor water vapor permeability; good for forming films, silk and other products, but poor in dyeing, printing and adhesion.
Polypropylene (PP) plastic products use
1. Film. Mainly used for the packaging of various foods, industrial products, daily necessities and electrical components.
Second, hollow products. Used as containers for various liquid fuels, chemical liquids and daily chemicals.
Three, injection molding products. For daily necessities and various mechanical parts.
Fourth, all kinds of pipe, plate and sheet products. Mainly used for wire, cable sheath and thermoforming various grooves, etc.
Five, flat tape and fiber. It is used for packing bundled items and various packing woven belts, etc.
The above is the introduction, characteristics and product uses of polypropylene (PP), followed by the component grades in polypropylene.
1. New pellets
2. Powder
3. Recycle
4. Calcium powder
The further up you go, the better the polypropylene material.
In PP non-woven fabrics, polypropylene (PP) pellets are mostly used as raw materials. It is produced by continuous one-step method of high temperature melting, spinning, steel laying, hot pressing and coiling. At the same time, the more important point is that the products of PP non-woven fabrics are rich in color, bright and lively, fashionable and environmentally friendly, widely used, beautiful, with various patterns and styles, and are light in weight, environmentally friendly and recyclable, and are internationally recognized as protecting the earth. Eco-friendly product. It is suitable for agricultural film, shoe making, leather making, mattress, quilt, decoration, chemical industry, printing, automobile, building materials, furniture and other industries.
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