TPU Hot Melt Adhesive Film for Audio Wrapping and Electronic Protective Covers
TPU Hot Melt Adhesive Film for Audio Wrapping and Electronic Protective Covers
TPU adhesive film for audio wrapping and electronic protective covers is a flexible dry-film bonding layer for PU leather, microfiber and accessory cover lamination. It is used between cover material and selected backing or shell layers where wrapped edges, clean appearance and flexible handling are important.
| Material | TPU Hot Melt Adhesive Film |
|---|---|
| Thickness | 0.025-0.30 mm reference options |
| Width | 54 inch reference; custom slitting available |
| Appearance | Transparent / Translucent / White or matte by grade |
| Liner | Release paper / release film |
| Supply Form | Roll / slit roll / sheet / die-cut piece |
| Application | Audio wrapping, electronic protective covers, PU leather and microfiber cover lamination |
| Sample Grade Direction | ZF-7608 / ZF-5180 |
Product Categories
Product Fit
- Suitable for audio wrapping, electronic protective covers, accessory cover laminates and soft decorative cover layers.
- Best for projects that need flexible bonding, cleaner appearance and release-liner handling for slitting or die cutting.
- For phone case or tablet keyboard-only projects, use this page as a broader electronic cover film direction instead of a duplicate narrow product page.
Key Features
- TPU film direction for flexible cover structures and soft-touch lamination.
- Dry-film format helps reduce liquid glue marks and improve adhesive thickness control.
- Roll, slit roll, sheet and die-cut piece supply can be discussed by process.
- Release paper or release film supports cleaner placement, cutting and handling.
Recommended Applications
| Application Area | Typical Product / Bonding Position | Product Advantage / Selection Value |
|---|---|---|
| Audio wrapping | Speaker fabric, audio shell wrap and soft decorative cover layers | Supports clean lamination where appearance, edge control and flexible handling matter. |
| Electronic protective covers | Protective covers, folding covers and accessory shell laminates | Useful for bonding soft outer layers to support materials with controlled film thickness. |
| PU leather / microfiber lamination | PU leather, microfiber lining and textile backing layers | Helps reduce glue-line mess and supports a soft cover feel after lamination. |
| Die-cut adhesive parts | Narrow strips, cover edges, corner zones and local reinforcement pieces | Release liner helps slitting, die cutting, positioning and small-part assembly. |
Suitable Bonding Materials
Common trial materials include PU leather, microfiber, nylon fabric, polyester fabric, textile backing, TPU film, ABS, PC and PET fiberglass board. Metal inserts, heavily coated surfaces and low-surface-energy materials should be handled as special sample projects.
Technical Requirements and Selection Notes
| Selection Item | Available Reference / Buyer Direction |
|---|---|
| Material family | TPU hot melt adhesive film; modified TPU can be discussed for difficult structures. |
| Thickness | 0.025-0.30 mm reference options from approved model data. |
| Width | 54 inch reference width for ZF-7608 and ZF-5180; custom slitting can be discussed. |
| Appearance | Transparent, translucent, white or matte direction by grade and thickness. |
| Liner | Release paper or release film for slitting, cutting and placement. |
| Process direction | Use the selected grade’s reference process as a sample starting point, then adjust by substrate and machine. |
Sample Grade Specification
| Sample Grade | Material | Melting Point | Width | Shore Hardness | Reference Service / Process Conditions | Main Use Direction |
|---|---|---|---|---|---|---|
| ZF-7608 | TPU | 85 C | 54 in | 80A | -30 C to 85 C; 0.1-0.4 MPa, 110-130 C, 10-20 s | Audio wrapping, electronic protective cases, fabric cover bonding |
| ZF-5180 | TPU | 75-80 C | 54 in | 90A | -20 C to 80 C; 0.1-0.4 MPa, 80-110 C, 5-20 s | Electronic product leather cases, textile bonding, audio wrapping |
| ZF-6238 | TPU | 95-100 C | 54 in | 80A | -20 C to 80 C; 0.1-0.4 MPa, 120-140 C, 5-20 s | Optional comparison for electronic leather cases and textile bonding |
| ZF-7325 | TPU | 75-80 C | 54 in | 90A | -20 C to 70 C; 0.1-0.4 MPa, 110-130 C, 5-20 s | Optional comparison for electronic leather cases and textile bonding |
These values are reference data from the approved VELNORA model map and line-card extraction. Use them for sample direction and quotation discussion, then match the final grade to the real substrate stack, liner requirement and equipment setup.
Processing and Custom Supply Support
Samples can be prepared according to the buyer’s substrate stack, target thickness, liner need and converting method. VELNORA can support roll, slit roll, sheet or die-cut adhesive film supply for lamination trials, audio wrapping parts and electronic protective cover assembly.
Quality Control Summary
Typical checks include roll appearance, film thickness, width, liner release, melt behavior, edge bonding appearance, packaging and storage condition. For electronic cover projects, buyers usually also review flatness, glue marks, edge lift, fold behavior and surface appearance after cooling.
FAQ
Can this TPU film be used for audio wrapping?
Yes. ZF-7608 and ZF-5180 are useful sample directions for audio wrapping and related electronic cover laminates when the buyer needs flexible bonding and clean surface appearance.
What materials can it bond in electronic protective covers?
It can be sampled with PU leather, microfiber, textile backing, nylon, polyester, TPU film, ABS, PC and PET fiberglass board. Coated or low-energy surfaces should be reviewed separately.
Can the film be supplied as slit roll or die-cut pieces?
Yes. Roll, slit roll, sheet and die-cut film pieces can be discussed according to the cover size, cutting process and liner requirement.
What information helps VELNORA prepare an electronic cover quotation?
Send substrate names, layer structure, target thickness, width, liner requirement, supply form, bonding equipment and estimated quantity.
Related Products
Certified Quality Systems & Test Reports
VELNORA operates under ISO 9001 quality management and ISO 14001 environmental management systems. Third-party test reports for REACH, RoHS / halogen, California Proposition 65, VOC, organotin and phthalates are available for buyer review on request.
ISO 9001 & ISO 14001 certified. REACH, RoHS, Prop 65, VOC and other test reports on request.
ISO 9001 Quality Management
ISO 14001 Environmental Management
REACH Report
RoHS / Halogen Report
California Prop 65 Report
VOC Report
Organotin Report
Phthalates Report
