Shenzhen Tunsing Releases Next-Gen Polyurethane Hot Melt Adhesive Film DS9166

Empowering Multi-Industry Lamination with High Resilience and Superior Adhesion

RELEASE DATE: April 20, 2024[cite: 1]

ISSUED BY: Shenzhen Tunsing Plastic Products Co., Ltd.[cite: 1]

【Executive Summary】

SHENZHEN, China — Global adhesive film manufacturer Shenzhen Tunsing Plastic Products Co., Ltd. today officially announced the release of its latest thermoplastic polyurethane (TPU) hot melt adhesive film, DS9166[cite: 1]. Engineered with a glassine release paper backing, DS9166 is specifically developed for high-demanding bonding applications across garments, embroidery, luggage, handbags, and sporting goods[cite: 1]. Featuring excellent soft feel, resilience, and superior heat/cold resistance[cite: 1], DS9166 provides a reliable, sustainable bonding solution for textiles and polymers including ABS, PVC, and PC[cite: 1].

1. Technical Specifications & Physical Characteristics

DS9166 is a thermoplastic adhesive film supported by release paper, capable of being repeatedly heated and plasticized[cite: 1]. Thanks to precise rheological control and material formulation, the film maintains flexibility under cold conditions while delivering strong, durable bond strength under elevated temperatures[cite: 1].

• Composition: Polyurethane (TPU)[cite: 1]

• Color & Appearance: Transparent[cite: 1] (with Glassine Release Paper backing[cite: 1])

• Specific Gravity / Density: $1.20 \pm 0.02\text{ g/cm}^3$

  [cite: 1]

• Hardness: $60 \pm 2\text{ Shore A}$[cite: 1] (delivers soft hand feel and elasticity[cite: 1])

• Melt Flow Index (MFI): $8 \pm 4\text{ cm}^3/10\text{min}$ (ASTM D1238-04)[cite: 1]

• Melting Range: $100\text{--}125^\circ\text{C}$ (ISO 11357; DSC peak approx. $108.9^\circ\text{C}$)[cite: 1]

• Activation Temperature: $116\text{--}168^\circ\text{C}$ (Tunsing Laboratory Standard)[cite: 1]

• Glass Transition Temp. (Tg): $-20 \pm 8^\circ\text{C}$ (GB/T 19466.2-2004; DSC peak $-21.3^\circ\text{C}$)[cite: 1]

• Viscoelastic Crossover Point: Approx. $111.1^\circ\text{C}$ (Tested via Anton Paar Rotational Rheometer; crossover of storage modulus $G'$ and loss modulus $G''$)[cite: 1]

• Conventional Thickness: $0.05\text{mm}$, $0.08\text{mm}$, $0.10\text{mm}$[cite: 1] (Custom range: $0.05\text{--}0.15\text{mm}$[cite: 1])

• Conventional Width & Length: Width: $1380\text{mm}$[cite: 1] (Custom range: $5\text{--}1480\text{mm}$[cite: 1]); Length: $100\text{ yards/roll}$[cite: 1] (Finished Product: $1380\text{mm} \times 100\text{ yard/roll}$[cite: 1])

2. Application Scenarios

With its broad substrate compatibility, DS9166 is ideal for applications demanding high peel strength, flexibility, and soft hand feel:

1. Garments & Textiles: Seamless underwear, collar/cuff bonding, seamless pockets, and embroidery patch backing, offering soft touch and washability[cite: 1].

2. Luggage & Handbags: Strong bonding between textiles/leathers and rigid structural liners (PC, PVC, ABS)[cite: 1].

3. Sporting Goods: Protective gear, footwear lamination, and outdoor equipment requiring resistance to repeated bending and thermal cycles[cite: 1].

3. Recommended Bonding Conditions & Operating Method

To achieve maximum bond strength (achieving high peel strength on cotton substrates)[cite: 1], a Two-Step Lamination Process is recommended[cite: 1]:

1. First Lamination (Pre-bonding):

   • Mold Temperature: $150^\circ\text{C}\text{--}180^\circ\text{C}$

     [cite: 1]

   • Dwell Time: $5\text{--}15\text{ seconds}$

     [cite: 1]

   • Pressure: $0.3\text{--}0.6\text{ MPa}$

     [cite: 1]

   • Procedure: Align the DS9166 film to the first substrate, apply heat/pressure, allow to cool, and peel off the glassine release paper[cite: 1].

2. Second Lamination (Final Bonding):

   • Mold Temperature: $150^\circ\text{C}\text{--}190^\circ\text{C}$

     [cite: 1]

   • Dwell Time: $8\text{--}25\text{ seconds}$

     [cite: 1]

   • Pressure: $0.3\text{--}0.6\text{ MPa}$

     [cite: 1]

   • Procedure: Align the pre-coated substrate with the second material and apply final thermal lamination[cite: 1].

Operating Notice:

1. Bonding temperature, pressure, and time directly dictate final bond strength[cite: 1]. Lamination temperature must be close to machine settings, pressure must be uniform, and press rolls/molds must be flat[cite: 1].

2. Parameters provided are based on Tunsing laboratory conditions[cite: 1]. Customers should conduct preliminary testing on specific production equipment and substrates to establish optimal parameters[cite: 1]