Spunbound nonwoven is a demanding application — the resin must form uniform filaments at high line speeds, lay into an even web, and calender into fabric with consistent tensile strength. For hygiene, medical, and agricultural end-uses, the resin must also be clean and low in extractables. Our flagship PP fiber grade HP565S from leading Chinese mills is engineered specifically for this challenge — and it's the grade we know best.
Spunbound lines run fast and unforgiving. Five resin properties determine whether your line runs clean at 500 m/min — or stops every shift for broken filaments and web defects.
The resin must form and draw stable filaments at 400–600 m/min without breakage. Melt strength and rheology tuning are critical to line uptime.
Consistent filament denier across the die produces even web formation — directly controlling fabric basis weight, tensile strength, and MD/CD balance.
Tight lot-to-lot MFR control keeps spinning parameters stable. MFR drift forces line re-tuning and produces off-spec fabric — a costly cycle.
Minimal volatiles and surface additives — essential for skin-contact hygiene products and for meeting medical fabric regulatory limits.
The resin's molecular architecture translates directly into fabric tensile and tear strength — the properties your downstream customers specify.
A tight MWD is the foundation of uniform fiber and stable spinning — the single most important resin parameter for nonwoven performance.
For spunbound and SMS nonwoven, one grade stands above the rest in our portfolio — and it's the grade we ship in the highest volume to nonwoven manufacturers worldwide.
HP565S is purpose-engineered for high-speed spunbound lines. Three properties make it the workhorse resin for nonwoven manufacturers:
Consistent melt strength and draw performance produce stable filaments at high line speeds — fewer broken filaments, fewer line stoppages, higher effective uptime.
Tight MWD delivers uniform fiber denier and even web formation — directly translating to consistent fabric basis weight, tensile strength, and balanced MD/CD properties.
Minimal volatiles and surface additives make HP565S suitable for skin-contact hygiene products and medical fabrics — meeting the regulatory limits these applications demand.
HP565S serves a broad spectrum of nonwoven end-uses. Here's how the same resin class adapts to different fabric requirements.
The primary application. Continuous PP filaments are extruded, drawn, laid into a web, and calender-bonded into fabric in a single high-speed process.
Runs on Reicofil, Oerlikon, and domestic Chinese spunbound lines. Produces uniform filament webs calendered into nonwoven fabric across a wide basis weight range (10–150 gsm).
Diaper top sheets, sanitary napkins, adult incontinence products, surgical gowns, drapes, coveralls, and face mask components. Skin-contact safety and barrier performance are critical.
Low extractables and controlled composition make HP565S suitable for skin-contact hygiene products. For SMS medical fabrics, HP565S forms the spunbound (S) layers that provide tensile strength around the meltblown (M) barrier core.
Crop covers, nursery shade fabric, and weed-control fabric. UV-stabilized nonwoven protects seedlings, extends growing seasons, and allows light and water transmission.
HP565S accepts UV stabilizer masterbatch for outdoor agricultural nonwoven. The fabric's tensile strength and durability protect crops while withstanding sun and weather exposure across growing seasons.
HP565S is designed for high-speed spunbound lines. The settings below cover the typical operating window; optimize based on your specific die geometry, quench air system, and calender configuration.
| Melt Temperature | 220 – 240 °C |
| Spinning (Die) Temperature | 230 – 250 °C |
| Line Speed | 400 – 600 m/min |
| Quench Air Temperature | 18 – 25 °C |
| Calender Temperature | 120 – 140 °C |
| Drying (recommended) | 80 °C / 2–3 h |
For SMS lines, maintain die temperature within ±2 °C to preserve filament denier uniformity — the single most important factor in fabric tensile consistency.
Although PP is non-hygroscopic, a short drying pass at 80 °C for 2–3 hours removes surface moisture that can cause filament breaks and web defects at high line speeds.
Tell us your monthly volume, line type (Reicofil / Oerlikon / domestic), target gsm range, and destination port. Within 24 hours we'll respond with mill-direct pricing and current mill availability for HP565S.