Description
Product details
Attachment for Shrink Label Center / Seaming Machines ________________________________________ Product Overview The Trasy HMA Disc Applicator is a retrofit device for shrink-label center/seaming machines. It applies controlled hot-melt adhesive (HMA) lines on the inner surface of PVC shrink films before center-sealing. Adhesive is applied in ultra-thin layers (10–15 µm) without external heating — frictional softening at the rotating disc ensures no premature shrinkage of the film. During shrink-tunnel processing, the HMA melts and bonds the label securely to the container, preventing slippage on conical shapes. ________________________________________ Key Features • Retrofit design — fits most shrink-label center/seaming machines • Single / double / triple disc option → 1, 2 or 3 adhesive lines • Ultra-thin glue lines: 10–15 µm • No external heating of PVC film • Adjustable line spacing & position • Closed-loop motor control for stable RPM • Simple disc replacement & low maintenance ________________________________________ Adhesive Specification • Base: Ethylene Vinyl Acetate (EVA) Copolymer • Colour: Brownish Yellow • Viscosity: 275–600 cP @ 150 °C • Softening Point: 65–75 °C • Density: 0.99 ± 0.03 g/cm³ @ 30 °C ________________________________________ Operating Parameters • Disc Diameter: 30–70 mm (replaceable) • Disc Speed: 200–2,000 RPM (adjustable) • Linear Contact Speed: 1.0–3.0 m/s • Contact Force: 5–30 N (adjustable) • Label Web Speed: Up to 60 m/min (customizable) • Line Thickness: 10–15 µm (typical) ________________________________________ System Components • HMA disc cartridge (1 / 2 / 3 disc version) • BLDC motor with closed-loop drive & encoder • Pneumatic or servo pressure actuator • Web encoder / photo-eye synchronization • Safety guarding & thermal cut-off protection • Optional disc magazine for continuous production ________________________________________ Installation & Integration • Mounts upstream of center-seaming station • Syncs with existing label web encoder • Adjustable guides for accurate glue line placement • Quick setup via HMI recipe presets ________________________________________ Benefits ✔ Prevents sleeve slippage on conical containers ✔ No premature shrinkage of film ✔ Minimal adhesive usage (thin, precise lines) ✔ Retrofittable on existing lines ✔ Low-maintenance and operator friendly ________________________________________ Applications • PVC shrink sleeves & labels • Beverage, cosmetics, pharma & food packaging • Conical & non-standard container shapes
