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Only 40% of the dosage is needed for low melting point and enhanced hardness. It can be used for bonding clothing, bags and other scenes without the need for glue.
Product Summary
High Whiteness Reinforced Low Melting Polyester Staple Fiber Only 40% of the dosage is needed for low melting point and enhanced hardness. It can be used for bonding clothing, bags and other scenes without the need for glue. Product Overview Our high whiteness reinforced low melting polyester staple ...
Basic Properties
Place of Origin:
China
Brand Name:
Octopus fiber
Certification:
66962652
Model Number:
2.5D*51MM
Trading Properties
Minimum Order Quantity:
Starting from 1 ton
Price:
Free samples sent
Payment Terms:
D/A,D/P,T/T
Supply Ability:
Customized according to the quantity required by your company
Product Description
High Whiteness Reinforced Low Melting Polyester Staple Fiber
Only 40% of the dosage is needed for low melting point and enhanced hardness. It can be used for bonding clothing, bags and other scenes without the need for glue.
Product Overview
Our high whiteness reinforced low melting polyester staple fiber is a high-performance upgraded thermal bonding fiber, purpose-built for industries that demand high stiffness, premium white appearance and cost optimization.
Key Specifications
Low melting point hardening
4D*51MM
Specifications can be customized
Technical Advantages
Through innovative polymer modification and precision sheath-core spinning technology, it breaks through the performance limits of ordinary low melting fibers, delivering three core upgrades -- doubled hardness, enhanced whiteness and drastically reduced dosage -- to help manufacturers elevate product quality while significantly cutting raw material costs.
Unlike ordinary low melt fibers that require high addition ratios yet still produce limp, easily deformed finished products, this fiber integrates a high-rigidity reinforced core and a high-activity bonding sheath. The high-strength core provides exceptional structural support after molding, making finished products twice as stiff as standard alternatives, resistant to sagging and deformation, and capable of maintaining stable shaping performance over long-term use.
In terms of appearance quality, the fiber adopts raw-material-level whitening technology with ≥92% ISO whiteness, presenting a pure, bright and uniform white color free of gray or yellow impurities. The high-temperature resistant whitening system does not decompose or yellow during thermal bonding processing, and finished products maintain a bright white premium appearance long-term.
Application Scenarios
- Shoe Material Industry: Shoe toe puff & heel stiffener, shoe hard cotton, insole base, shoe lining shaping layer
- Garment & Apparel: Shirt collar interlining, suit chest interlining, garment adhesive interlining, waistband stiffener
- Bag & Luggage: Bag body stiffener, box lining shaping layer, luggage support sheet, backpack rigid base
- Industrial Filtration: Rigid filter felt, dust removal filter bag base, liquid filter plate support
- Automotive Interior: Car ceiling stiffener, door trim support layer, trunk lining shaping cotton
- Home & Craft Nonwoven: Mattress hard cotton, sofa support layer, wall decoration stiffener
Product Images
Technical Specifications
| Item | Detailed Parameter |
|---|---|
| Product Name | High Whiteness Reinforced Low Melting Sheath-Core Polyester Staple Fiber |
| Standard Spec | 4D*51mm (customizable denier & length on request) |
| Fiber Structure | Concentric sheath-core bicomponent structure, 100% virgin PET polymer |
| Sheath Layer | Modified low-melting polyester, melting point 110-130°C, high-efficiency thermal bonding |
| Core Layer | High-rigidity reinforced polyester, delivers 2* bending stiffness vs. standard LMPET |
| Whiteness Index | ≥92% ISO brightness, ultra-pure bright white, high-temperature anti-yellowing formula |
| Hardness Performance | 2* the finished stiffness & shape retention of standard low melt fiber at equal dosage |
| Dosage Efficiency | Only 40% addition achieves the same bonding strength & hardness as 100% standard LMPET |
| Breaking Tenacity | ≥3.0 cN/dtex, high strength for stable high-speed carding & web forming |
| Crimp Number | 10-12 crimps / 25mm, moderate crimp for good fiber cohesion & uniform web |
| Oil Content | 0.10%-0.18%, uniform antistatic oiling, smooth processing with low fly waste |
| Yellowing Resistance | Grade A, no yellowing after thermal bonding & long-term indoor use |
| Bonding Feature | Low-temperature uniform melting, high peel strength, stiff & dimensionally stable fabric |
| Compatible Process | Carding, needle punching, thermal calendering, air laid, hard cotton thermoforming |
| Main Application | Shoe hard cotton, garment interlining, bag stiffener, rigid filter felt, automotive interior |
| Package | 25kg Clean Moisture-Proof Woven Bag, Pallet Packed for Global Bulk Export Shipment |
Core Selling Advantages
2* Reinforced Hardness, Superior Shape Retention No Sagging
Engineered with a specially formulated high-rigidity polyester core, this fiber delivers twice the bending stiffness and structural support of ordinary low melting fibers at the same addition ratio.
Enhanced Ultra-High Whiteness, Anti-Yellowing Premium Appearance
Built with raw-material-level brightening formula and high-purity virgin PET chips, the fiber reaches ≥ 92% ISO whiteness with a pure, uniform, bright white shade.
Only 40% Dosage Required, 60% Raw Material Cost Cut
Thanks to the high-activity bonding sheath and reinforced rigid core, just 40% addition of this fiber delivers the exact same bonding strength and finished hardness as 100% standard low melting fiber.
Sheath-Core Low-Temp Thermal Bonding, Adhesive-Free & Eco-Safe
It adopts precision concentric sheath-core bicomponent technology. The low-melting sheath melts evenly at 110-130°C to form firm, uniform physical fiber-to-fiber bonds.
Universal Industry Specification, Drop-In Compatible With All Lines
The 2.5D medium denier and 51mm standard cut length are the most widely adopted universal specifications in the low melt fiber industry.
Frequently Asked Questions
How much stiffer is this fiber compared with standard low melting fiber?
With a reinforced high-rigidity core layer, it delivers 2* the bending stiffness and shape retention of ordinary low melting fiber at the same addition ratio. Finished products stay firm and do not sag or deform under long-term stress.
What does "only 40% dosage" mean in practical production?
It means only 40% addition of this fiber can achieve the exact same bonding strength and finished hardness as 100% addition of standard low melting fiber. It directly cuts bonding fiber consumption by 60% and significantly reduces production cost.
What is the whiteness value? Will it yellow after heating or long-term use?
ISO whiteness reaches ≥92%, with a pure bright white shade. It uses a high-temperature resistant whitening formula with excellent yellowing resistance, and will not turn yellow or dull during thermal bonding processing or long-term indoor use.
What is the melting point? Is chemical adhesive needed for processing?
The sheath melting point is 110-130°C. No chemical adhesive is required at all. It relies on the melted sheath layer to form firm physical inter-fiber bonds, which is eco-friendly and free of VOC residues.
Is 2.5D *51mm compatible with carding, needle punching and hard cotton molding lines?
Yes, 2.5D*51mm is the industry standard universal specification, fully compatible with all mainstream carding, needle punching, thermal calendering and hard cotton thermoforming equipment, and can be directly put into production.
Product Details
Name:
Low Melting Point Hardening
Specification:
2.5D*51MM
Native/Regenerative:
Native
Color:
White
More Sizes:
Customizable
Siliconized/Non-Silicified:
Non-silicified
Ms. Heidi
Overseas Sales Manager
- Email: heidi@bzyfiber.com
- Tel: 0086-18102756185
- WhatsApp: 8618102756185
-
WeChat:
0086-18102756185
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