BOPET Heat Sealable Film For Cup sealing

The BOPET Heat Sealable Film for cup sealing produced by Jincheng Factory has been iteratively optimized to improve the heat sealing formula. It eliminates the defects of common sealing films such as easy air leakage, easy cracking, and easy detachment. After forming, the seal is tight, the sealing performance is strong, and it is resistant to pulling without being easily lifted. It features high stability in sealing performance and is suitable for long-term storage packaging scenarios.

This product has standardized thicknesses covering four common specifications: 15μm, 25μm, 30μm, and 40μm. It is suitable for sealing the openings of thin beverage cups as well as thickening food boxes and industrial composite sealed packaging in all working conditions.

The entire series adopts a refined double-sided differential corona treatment process. The inner side of the heat-sealed surface maintains a stable adhesion of 52-54 dynes, ensuring strong adhesion of the heat-sealed layer, ink, and composite glue; the outer side has a stable adhesion of 42-46 dynes. The film surface is smooth and flat, flowing smoothly during machine operation without getting stuck or sticking together. The transparent model is transparent and clean, allowing for clear display of the internal materials; the aluminum-coated model comes with a metal high-barrier layer, which blocks light, prevents moisture, and isolates oxidation, while also providing sealing protection and packaging texture.

Product application scenarios and compatibility advantages

1. Locking and sealing of beverage cups and food containers

2. Fine-sealed packaging for daily care and cosmetics

3. Sterile sealing packaging for pharmaceuticals and health products

4. General-purpose composite sealing applications in industry

Professional Storage and Maintenance Specifications

1. Standard Storage Environment Maintenance

BOPET Heat Sealable Film for Cup Sealing should be stored in a cool, dry, and ventilated temperature-controlled warehouse, avoiding exposure to high temperatures, direct sunlight, and humid condensation, to prevent premature aging and adhesion failure of the heat seal layer. The rolls should be stored upright and must not be subjected to heavy pressure stacking or friction from sharp hard objects on the film surface, to ensure the integrity of the heat seal layer and the corona surface, and to avoid affecting the subsequent heat sealing and printing results. Follow the first-in-first-out principle. For regular inventory, it is recommended to be put into production within 6 months, maintaining the best performance.

2. Machine Usage Process Specifications

Before starting the machine, confirm that the sealing knife of the sealing equipment is clean and free of debris and residue of glue, to avoid local partial sealing and uneven sealing edges. Adjust the heat sealing temperature, pressure, and duration according to the thickness of the film, and match the equipment parameters by taking advantage of the wide temperature stability characteristics of this product. There is no need for frequent adjustments, and uniform sealing can be achieved. Maintain a stable tension of the film during the entire process, avoid pulling and deformation, deviation, and tearing of the film, to ensure the consistency of the production sealing.

3. Daily Maintenance of Equipment Accessories

After the end of production, wait for the sealing knife to completely cool down, then use a soft cloth to gently wipe the residual film debris and glue stains on the sealing knife and guide rollers. Do not scrape with metal hard objects. Protect the coating of the equipment and the compatibility of the film surface. Regularly clean the photoelectric sensing components of the equipment to ensure the accuracy of the film movement, and avoid sealing defects caused by equipment failures, thereby extending the service life of the film and the equipment compatibility.

4. Maintenance Points for Finished Products After Packaging

For the packaged finished products that have just been heat sealed, let them stand and cool down to set, then stack and store them. Avoid the movement of the heat-sealed edges before they are fully cured, to prevent adhesion displacement and loosening of the seal. For refrigerated and frozen food sealed products, avoid sudden temperature changes to prevent condensation on the sealing edges from getting damp, to ensure long-term stable sealing without detachment.

5. Transportation Protection Maintenance

Adapt an exclusive packaging plan according to the order scenario. For domestic turnover, use simple packaging and horizontal or vertical pallets; for high-precision and export orders, prioritize suspended pallets and export moisture-proof pallets to effectively resist transportation compression, moisture, and scraping, ensuring that the rolls can be directly put into production upon arrival.

FAQ

Q1: What is the principle behind the "unbreakable" feature of this BOPET Heat Sealable Film for Cup Sealing?

It uses modified and thickened heat-sealing coating, combined with a uniform substrate structure. After heat sealing, the bonding strength is high, the adhesion is uniform, there is no local weak sealing, normal pulling does not make it easy to peel off or crack, and it is suitable for packaging scenarios requiring long-term sealing.

Q2: How to select transparent and aluminum-coated heat-sealing films?

For visual display of materials, the transparent type is recommended for regular food sealing; for medical, high-end daily care packaging that requires light avoidance, moisture resistance, and antioxidant properties, the aluminum-coated high barrier type is preferred.

Q3: Can it be compatible with fully automatic high-speed sealing machines?

It is fully compatible. The film tension is stable, the heat-sealing range is wide, the high-speed running film does not deviate or stick together, the sealing is uniform without breaks, and it is suitable for various cup sealing and box sealing equipment of fully automatic and semi-automatic types.

Q4: Will there be problems such as leakage, blistering, or edge separation after heat sealing?

The film surface flatness and heat-sealing layer uniformity are strictly controlled during production. Under normal parameter debugging, the sealing is flat and tight, without bubbles, no leakage, and it is not easy to separate or delaminate during long-term storage, with a high production yield rate.

Q5: Will the film's corona value rapidly decay after storage?

The double-sided corona parameters are stable and have strong anti-decay ability. Under compliant storage conditions, it can maintain excellent heat sealing, printing, and composite adhesion properties for half a year without the need for secondary corona treatment.

Q6: How to choose heat-sealing films of different thicknesses?

Light and thin beverage cups, small packages use 15μm and 25μm; for packaging of lunch boxes, industrial composite, and heavy-load packaging, the recommended thicknesses are 30μm and 40μm for thickened types, with higher sealing strength.

Q7: Which packaging method is recommended for export orders?

For cross-border shipping and long-distance foreign trade orders, the export anti-damp tray or suspended tray is preferred. It can prevent moisture and pressure, eliminate film surface damage and heat-sealing layer moisture failure, ensuring the quality of export products.