Polypropylene lightweight filament: The perfect combination of lightweight and high performance！

Product definition and core features

Polypropylene lightweight filament (also known as PP lightweight yarn or hollow polypropylene filament) is a lightweight synthetic fiber made from polypropylene (PP) as raw material through a special spinning process. Its core advantages include:

Ultimate lightweight: With a density of only 0.91g /cm ³, it is the lightest among common chemical fibers, being 40% lighter than cotton and 30% lighter than polyester.

Hollow structure: The cross-section is in a hollow shape, further reducing the weight (20%-30% lighter than ordinary polypropylene), while enhancing the thermal insulation and breathability.

High strength and wear resistance: The dry and wet strengths are the same, with a breaking strength of 4-8 grams per denier, making it suitable for manufacturing high-strength products such as luggage straps and car seat cushions.

Chemical resistance: Resistant to acids and alkalis (except concentrated nitric acid and concentrated sodium hydroxide), suitable for harsh environments such as industrial filter cloth and fishing nets.

2. Production process and technological innovation

The production process of polypropylene lightweight filament mainly includes:

Raw material modification: Polypropylene polymerized from petroleum by-product propylene is adopted, and anti-aging agents, color masterbatches, etc. are added to improve performance.

Melt spinning: It is melted through a screw extruder (at a temperature of 265-280℃) and formed by a hollow spinneret.

Stretching and heat treatment: Stretching enhances the strength of fibers, while heat treatment stabilizes the structure and reduces deformation.

Environmental protection and recycling process: Some enterprises recycle and reprocess waste PP plastics (such as ropes and yarns), and through classification, melting and spinning, produce recycled polypropylene lightweight filaments, reducing carbon emissions.

3. Application fields and market prospects

Textile and apparel: Ski suits, mountaineering suits (lightweight and warm), sports underwear (core moisture-absorbing and moisture-conducting).

Industrial applications: Luggage straps, safety nets, filter cloths (wear-resistant and corrosion-resistant).

Home decoration: sofa fabric, curtains (easy to clean, UV-resistant).

Sustainable development: The demand for recycled polypropylene lightweight filaments in automotive interiors and eco-friendly packaging is on the rise, in line with the trend of green manufacturing.

4. Industry Trends and Purchasing Suggestions

Market specifications: The mainstream products are 300D-1200D. The price of 900D lightweight filament is approximately 13-14.5 yuan per kilogram, and custom colors are supported.

Technology trend: Enhance the comfort of clothing through denier (single filament fineness ≤2.2dtex), or expand application scenarios by blending with cotton and wool.

Conclusion

Polypropylene lightweight filament is gradually replacing traditional synthetic fibers due to its light weight, high strength, low cost and environmental protection potential. With the breakthrough of modification technology, its application in high-end textiles and industrial fields will continue to expand, becoming an important choice in the lightweight materials market

Shanghai Jinci Industrial Co., Ltd. was established in March 2006. It is a large-scale physical company specializing in the production and sales of polypropylene (PP yarn). The company's products include polypropylene common strength filament, polypropylene high-strength filament, polypropylene lightweight filament, polypropylene twisted filament, polypropylene hollow filament, polypropylene fluorescent filament, polypropylene luminous filament, polypropylene flame-retardant filament, polypropylene air-modified filament, etc.