High-Speed UV Adhesive for PET Folding Cartons, Transparent Packaging & Plastic Box Bonding
Product Overview
PET Folding Box UV Curable Adhesive is a premium one-component, solvent-free UV-curable adhesive specially formulated for bonding PET folding cartons, transparent plastic boxes, cosmetic packaging, food containers, electronic product packaging and premium display boxes.
The adhesive cures instantly under UV LED or traditional UV lamps, delivering exceptional transparency, high initial bonding strength and outstanding production efficiency. It is designed for fully automatic folding and gluing machines, helping manufacturers achieve faster production speeds while reducing operating costs.
Compared with conventional solvent-based adhesives, this UV adhesive offers cleaner processing, higher productivity and superior long-term durability.
Technical Specifications
| Domain |
Parameter |
Technical Specification |
Industrial Performance Standard (行业表现标准) |
|
1. Nature
|
Chemical Type / Basis |
Modified Acrylic Resin |
100% reactive monomer & oligomer blend, solvent-free. |
|
Appearance / Color |
Clear, Colorless Liquid |
Ensures crisp, invisible seam lines on high-clarity boxes. |
|
Viscosity (at 25°C) |
60 – 150 cps |
Low viscosity for high-speed jetting without tailing or stringing. |
|
Density |
1.05 – 1.10 g/cm³ |
Consistent volumetric dosage control during continuous manufacturing. |
|
Solid Content |
≥ 99% |
Zero shrinking after cure, avoiding structural box deformation. |
|
2. Next-Gen Curing
|
Recommended Wavelength |
365nm + 395nm (Dual Spectrum) |
365nm for tack-free surface; 395nm for deep PET penetration. |
|
Required Curing Energy |
300 – 600 mJ/cm² (UVA) |
Optimized molecular cross-linking to eliminate uncured adhesive. |
|
Minimum UV Intensity |
≥ 150 mW/cm² |
High power density required for instantaneous structural lock. |
|
Cure Speed / Cycle Time |
1.0 – 3.0 seconds |
Supports automated box-folding line speeds up to 40–60 m/min. |
|
3. Nirvana Quality
|
Adhesion on Untreated PET |
5B (ASTM D3359 Grid Test) |
0% peel-off; structural failure occurs within substrate itself. |
|
Elongation at Break |
≥ 120% |
High elasticity prevents glue line snapping from box tension. |
|
Shear Strength (PET to PET) |
≥ 4.5 MPa |
Heavy-duty loading capacity; cross-border transport secure. |
|
Optical Transparency |
≥ 98% |
Blends seamlessly into clear PET films with zero fogging. |
|
4. Network Stability
|
Yellowing Resistance |
ΔE < 1.5 (168h UV Aging) |
Resists color degradation under prolonged retail display lighting. |
|
Thermal Shock Endurance |
-20°C to +70°C (48h Cycle) |
Prevents automatic pop-open in extreme shipping containers. |
|
Damp Heat Resistance |
60°C / 95% RH for 72 Hours |
Anti-hydrolysis polymer backbone ensures long-term seam integrity. |
|
Shelf Life |
12 Months |
Stable formulation when stored at 5°C–25°C in opaque containers. |
Key Features
Crystal Clear Bond Line
Designed specifically for transparent PET packaging.
Benefits include:
- Water-clear appearance
- Invisible bonding
- No whitening
- No bubbles
- High gloss finish
- Premium packaging appearance
Perfect for luxury retail packaging.
Strong Initial Adhesion
Provides excellent bonding strength immediately after UV curing.
Suitable for:
- PET
- APET
- RPET
- PVC
- PC
- PETG
- Acrylic
- Printed PET sheets
No edge opening after folding.
Core Advantages
- Fast UV Curing: Fully cured within seconds under 365/405nm UV LED light, no baking required, zero solvent volatilization, greatly boost production line throughput.
- Clean Full Peel-off, No Residue: Flexible cured film with high stretch rate; peels off completely without breaking or leaving blue residue, no damage to PCB, metal or plastic substrates.
- High Viscosity Anti-sag Formula: Thick paste texture, no dripping or sagging on vertical surfaces and tiny solder pads, ideal for precision micro masking.
- Multi-layer Barrier Protection: Dense cured film blocks moisture, water, flux, weak acid & alkali liquid, perfectly shield components during electroplating, washing and soldering processes.
- Low Odor & Mild Formula: Low irritation raw material formula, comfortable long-hour workshop operation without strong pungent smell.
- Wide Substrate Compatibility: Excellent adhesion on metal pads, PCB circuit boards, plastic earphone parts, glass, ceramics and sensor components.
Low Odor & VOC-Free
Designed for environmentally friendly packaging production.
Advantages:
- Solvent free
- Low VOC emission
- Low odor
- Cleaner production
- Energy-saving curing process
Storage Requirements
- Store in black light-proof syringes / pails, keep away from natural sunlight and UV light to avoid premature curing.
- Recommended storage temperature: 10°C - 28°C, cool & dry warehouse, far from heat sources.
- Unopened original package shelf life: 12 months; finish using within 1 month once opened, seal tightly and shade from light.
Safety Operation Notice
- Contains acrylate photosensitive monomers. Wear safety goggles and nitrile gloves during operation to avoid direct skin & eye contact.
- In case of skin contact: wash thoroughly with running water and soap. If splashed into eyes, flush with large amounts of clean water and seek medical treatment immediately.
- Keep production workshop well ventilated, avoid long-term exposure to concentrated glue vapor.
- Non-edible, store out of reach of children.
- Fully cured film is non-irritating and non-volatile, safe for contact with electronic parts and human hands.
Typical Applications
Cosmetic Packaging
- Perfume boxes
- Skincare packaging
- Makeup gift boxes
- Luxury cosmetic cartons
Food Packaging
- PET bakery boxes
- Fruit containers
- Transparent food boxes
- Disposable packaging
Electronics Packaging
- Earphone packaging
- Mobile phone accessories
- USB cable packaging
- Electronic product display boxes
Gift Packaging
- Luxury gift boxes
- Display boxes
- Window cartons
- Promotional packaging
Retail Display Packaging
- Hanging display boxes
- Transparent folding cartons
- Shelf-ready packaging
- Premium retail displays
Pharmaceutical Packaging
- Medical device boxes
- Healthcare packaging
- Transparent protective cartons
Frequently Asked Questions
Q1: What is UV adhesive and how does it cure?
A1: UV adhesive is a single-component resin that remains liquid until exposed to Ultraviolet (UV) light, which triggers a rapid polymerization (curing) process.
Q2: What materials can your UV adhesives bond?
A2: Our UV adhesives bond a wide range of substrates, including glass, metals, ceramics, and various plastics (PC, PMMA, PET, PVC).
Q3: Do your UV adhesives yellow over time?
A3: Our premium grades are formulated with high-quality anti-yellowing agents, ensuring excellent optical clarity and UV resistance even after long-term exposure.
Q4: Are your UV adhesives waterproof and temperature resistant?
A4: Yes, once fully cured, they offer excellent moisture resistance and thermal stability. Temperature limits vary by product (typically -40°C to 120°C or higher).
Q5: Why is my UV glue still sticky/tacky after curing?
A5: Usually caused by oxygen inhibition. Oxygen in the air interferes with the chemical reaction on the very surface of the glue.