Tunsing Technical Analysis: Performance Differences & Precision Selection Guide for DS002 vs DS002-2 Copolyamide Hot Melt Adhesive Films

Release Date: April 23, 2024

Issued By: Shenzhen Tunsing Plastic Products Co., Ltd.

Category: Product Technology & Selection Guide

1. Product Background & Common Advantages

With the growing demand for high-quality adhesives in seamless textile bonding, micro-elastic garment structures, and industrial composite materials, Shenzhen Tunsing Plastic Products Co., Ltd. has officially released the latest technical test reports (V1.3/V1.4) for its flagship copolyamide hot melt adhesive films——DS002 and DS002-2[cite: 1, 6].

Both DS002 and DS002-2 are co-extruded copolyamide-based hot melt adhesive films protected with glassine release paper, presenting an elegant light blue to sky blue transparent appearance[cite: 1, 6]. Both products exhibit thermoplastic behavior suitable for repeated thermal bonding and are specifically engineered for textile substrates, including cotton, nylon, chemical fibers, and blended fabrics[cite: 1, 6]. They share identical standards in dry cleaning resistance, density ($1.15 \pm 0.02\text{ g/cm}^3$), and custom specification options (thickness: 0.05–0.15 mm, width: 5–1580 mm)[cite: 1, 6].

2. Technical Parameter Comparison Table

Based on the latest lab evaluations conducted by Tunsing (using NETZSCH DSC 214 and Anton Paar rotational rheometer), the core technical parameters are summarized below:

3. Key Rheological & Thermodynamic Differences

1. Viscoelastic Transition Temperature:

   According to Anton Paar rheometer testing, the crossover point of storage modulus ($G'$) and loss modulus ($G''$) for DS002 occurs at 94.1°C, indicating that it begins to exhibit significant viscoelastic flow at lower temperatures to penetrate microporous fabrics[cite: 1]. In contrast, DS002-2 reaches its transition point at 127.1°C, retaining high cohesive strength at elevated temperatures—the core mechanism behind its ability to withstand 90°C hot water washing[cite: 6].

2. Wash Endurance & Activation Window Shift:

   DS002 is designed primarily for 40°C routine laundry with an activation starting temperature of 98°C[cite: 1]. DS002-2 elevates the washing resistance to 90°C high-temperature sterilization wash, pushing its activation window to 114–145°C and increasing the required pressing temperature by approximately 10°C[cite: 6].

4. Precision Selection Guide

Option A: Ideal Applications for DS002

• Standard Seamless Apparel & Underwear: Ideal for seamless underwear, sportswear, and lightweight outdoor clothing seeking soft touch and comfortable bonding[cite: 1].

• Heat-Sensitive Fabric Lamination: Suitable for delicate fabrics sensitive to high thermal pressing (max 160°C)[cite: 1].

• Routine Washing Requirements: Products designed for regular household washing at $\le 40^\circ\text{C}$ or dry cleaning[cite: 1].

• General Uses: Embroidered badges, insoles, hats, and handbag linings[cite: 1].

Option B: Ideal Applications for DS002-2

• High-Temp & Industrial Laundering: Ideal for medical workwear, protective suits, and chef uniforms requiring 90°C hot water wash sterilization[cite: 6].

• High-Durability Footwear & Luggage: Heavy-duty athletic shoes, hard-shell luggage, and outdoor protective gear[cite: 6].

• High-Temperature Equipment: Manufacturing facilities equipped with continuous pressing machinery operating at 140–180°C[cite: 6].

• High Cohesive Strength: Seam bonding applications requiring extremely low thermal creep under hot/humid environments[cite: 6].

5. Company Info

• Company Name: Shenzhen Tunsing Plastic Products Co., Ltd.[cite: 1, 6]

• Address: Tunsing Industrial Zone, No. 28 Xiatian Village, Longtian Street, Pingshan District, Shenzhen, China[cite: 1, 6]