Polyester Interlock Fabric
As a Polyester Interlock Fabric manufacturer and supplier based in Cixi, China, Derun Industrial has produced premium circular-knit fabrics for over two decades. Our 36,000-square-meter factory operates more than 200 high-precision knitting machines, delivering an annual output of 15,000 tons of high-quality polyester fabrics. This category page introduces our interlock range, its construction, and how we match fabric specifications to your garment or lining project.
Interlock is a double-knit structure that produces a smooth, stable fabric with identical faces on both sides. It offers better dimensional stability, a softer hand, and higher coverage than single jersey, making it a preferred choice for activewear, uniforms, and linings that require both comfort and structure.
Our Interlock Range and Application Fit
We supply a family of 100% polyester interlock fabrics in weights from 140 g/m² to 180 g/m² and widths from 150 cm to 183 cm. Each variant is engineered for a specific end-use, as summarized below:
| Product |
Weight / Width |
Key Features |
Typical Applications |
| Double-Knit Firm Texture |
150 g/m² / 150 cm |
Firm hand, high durability, shape retention |
Sportswear, work uniforms, structured casual wear |
| Quick-Dry Cooling |
180 g/m² / 183 cm |
Moisture-wicking, fast-drying, cooling effect |
Activewear, gym wear, athleisure |
| 150g/sm Standard |
150 g/m² / 160 cm |
Balanced weight, high colorfastness, resists deformation |
Sports T-shirts, school uniform linings, yoga wear |
| Smooth 165g |
165 g/m² / 160 cm |
Smooth surface, soft hand, good opacity |
Dresses, blouses, lightweight jackets |
| Opaque Durable 170g |
170 g/m² / 160 cm |
Opaque, durable, excellent for lining |
Garment lining, outerwear, bags |
| Lightweight Breathable 140g |
140 g/m² / 160 cm |
Lightweight, breathable, soft drape |
Summer wear, lining, lightweight activewear |
| Piece Dyed |
Custom weight / width |
Uniform dyeing, color precision |
Branded apparel, custom colors |
Material and Performance Characteristics
All our interlock fabrics are knitted from 100% polyester filament or spun yarns. Polyester provides high tensile strength, excellent wrinkle resistance, and dimensional stability—properties that translate into garments that hold their shape through repeated washing and wear. The interlock structure adds a soft, cotton-like hand while maintaining the performance benefits of polyester.
- Moisture management: Quick-dry and moisture-wicking variants are engineered with modified yarns or finishes to move sweat away from the skin.
- Durability: Double-knit construction resists snagging and pilling, extending the life of the final product.
- Comfort: The smooth surface and lack of curling make it suitable for direct skin contact.
- Colorfastness: High-quality dyeing ensures vibrant colors that resist fading.
Customization and Configuration
We understand that every project has unique requirements. Our R&D team works with you to customize the fabric in terms of weight, width, color, and finish. Whether you need a specific shade for a brand uniform or a special moisture-wicking treatment for performance wear, we can adjust the knitting parameters and finishing processes accordingly.
For example, the Quick-Dry Cooling 100% Polyester Interlock Fabric for Activewear is a popular choice for sports brands, while the Double-Knit 100% Polyester Interlock Fabric With Firm Texture suits structured workwear.
Quality Assurance and Testing
Quality is built into every step of our production. We conduct in-process inspections after knitting, dyeing, and finishing. For final products, we perform 100% inspection according to customer requirements and international standards. Our quality control system aligns with ISO and CE guidelines, ensuring consistency and reliability.
We also test for critical parameters such as weight tolerance, width consistency, colorfastness, shrinkage, and pilling resistance. This data is documented and shared with you for approval before bulk production.
Production Capacity and Lead Times
With over 200 circular knitting machines and a daily output exceeding 100 tons, we can handle large-volume orders efficiently. Our factory in Cixi is strategically located near Ningbo Port, facilitating convenient sea freight export. Typical lead times for bulk orders are discussed at quotation, depending on the complexity of customization and current production schedule.
Information We Use to Configure Your Solution
To prepare an accurate quotation and sample, please provide the following details:
- Target weight (g/m²) and width (cm)
- Color requirements (Pantone or physical sample)
- End-use application (e.g., sportswear, lining, uniform)
- Required performance features (e.g., quick-dry, anti-pilling, UV protection)
- Estimated order quantity
- Any specific certifications or compliance standards
Packaging and Delivery
Fabrics are rolled on cardboard tubes, wrapped in poly bags, and packed in export cartons or bales as per your preference. We coordinate shipping from Ningbo Port, offering FOB, CIF, or CNF terms. For urgent orders, air freight is available from Ningbo or Shanghai airports.
Frequently Asked Questions
What is the difference between interlock and single jersey?
Interlock is a double-knit fabric with two layers interlocked, making it thicker, more stable, and less prone to curling than single jersey. It has a smoother surface and better drape, ideal for garments requiring structure.
Can you match a specific color?
Yes, we can match colors using Pantone codes or your physical sample. Our dyeing process ensures high colorfastness and consistency across batches.
What is the minimum order quantity?
MOQ depends on the fabric weight and color. For standard colors, it is typically around 500 kg per color. For custom colors, a higher MOQ may apply. We can discuss this based on your project.
Do you provide samples?
Yes, we provide free samples for evaluation. You can request a sample from our existing range or a custom development sample, which may incur a small fee.
How do you ensure quality for large orders?
We follow a strict quality control process, including in-line inspections and final 100% inspection. We also provide test reports for key parameters upon request.
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