How to correctly use BOPP tape for sealing cartons to ensure a secure and non-detachable seal?

1. Choosing the Right BOPP Tape and Tools

High-Performance Substrate: BOPP tape uses biaxially oriented polypropylene film, possessing excellent strength and temperature resistance, maintaining adhesion in various packaging environments.

Professional Adhesive: Baiyi's proprietary high-viscosity pressure-sensitive adhesive, rigorously formulated, ensures rapid bonding even in low-temperature or high-humidity environments.

Supporting Equipment: Use a dedicated carton sealing machine or manual sealing gun to apply even pressure, preventing loosening due to uneven pressure.

Quality Assurance: Baiyi has 4 BOPP film production lines and an independent adhesive workshop. Products meet international quality standards and undergo multiple tests before leaving the factory to ensure consistent viscosity and tension in each roll of tape.

2. Correct Carton Sealing Procedure

Surface Cleaning: Before applying the tape, use a clean cloth or air blower to remove dust and oil from the carton surface to ensure direct contact between the tape and the carton.

Measure and Cut: Cut the tape according to the box dimensions, allowing a 5-10cm margin to avoid incomplete sealing due to insufficient length.

Even Compaction: Use the sealing machine's rollers or a manual compaction tool to smoothly compact the tape from the center outwards along the center line with appropriate force, ensuring complete adhesion.

Double Reinforcement: For heavy or fragile goods, a "cross-hatching" or "double-layer" sealing method can be used. The first layer is applied along the length of the box, and the second layer is perpendicularly crossed, forming a cross-shaped reinforcement structure.

3. Key Points for Improving Sealing Strength

Temperature Control: BOPP tape adheres best at 15°C–30°C. Extremely low temperatures reduce adhesive activity, while extreme high temperatures may soften the tape.

Appropriate Tension: Maintain appropriate tension during the application process to prevent air bubbles or wrinkles in the tape, as these defects are the main causes of detachment.

Use dedicated backing paper: Baiyi's BOPP tape comes with high-strength backing paper, offering excellent tear resistance and preventing breakage even during handling impacts.

Regular inspection: After long-distance transport or stacking, check for peeling or detachment of the seals, and re-apply as necessary.

4. Common problems and solutions for preventing BOPP tape detachment

Tape aging: Prolonged exposure to sunlight or high temperatures accelerates adhesive aging. We recommend using Baiyi's UV-resistant coated BOPP tape to extend its lifespan.

Incompatible box materials: Smooth or waterproof cardboard surfaces may affect adhesion. Apply a thin layer of backing paper to the back of the tape or use a dedicated pretreatment agent.

Over-stacking: Exceeding the tape's weight limit can cause indentations and detachment. Baiyi's high-strength BOPP tape offers superior compression resistance and is suitable for heavy-duty packaging.

Improper storage: Tape should be stored in a dry, well-ventilated warehouse, avoiding moisture. Baiyi has professional warehousing near Ningbo Port to ensure that outgoing products are always in optimal condition.