Kraft paper pouches are becoming popular among brands due to their natural and sustainable composition, particularly in the food, coffee, and snack industries. Sealing the pouches in the right manner is not just about keeping the product fresh and intact but also a means to enhance the overall package appearance and end-user experience. This article will detail how to seal Kraft paper pouches and key considerations to be remembered while sealing.
Common Sealing Methods
Heat Sealing
Heat sealing is the most common and effective method of sealing, suitable for Kraft paper bags with an inner heat-sealable film. If a commercial heat sealer is used, heat and pressure are applied to the bag opening, sealing the inner film together and closing the bag in a tight, air-tight manner, keeping air and moisture out and contributing to product shelf life.
Clip Closure
Suitable for short-term storage or secondary closure. Its opening can be sealed with a sealing clip or metal clip at ease, but the seal is weaker, suitable for home use or small amounts.
Tape Sealing
Closure by double-sided tape or sealing tape is suitable for kraft paper bags without a heat-sealable film, but its strength and sealing are affected.
Tie Closure
Typically found on reusable or gift bags, this technique employs a string to tie off the opening of the bag. Though pleasing to the eye, it is not very protective.
Recommended Sealing Devices
Heat Sealer
Ideal for production in bulk, promoting an even and secure closure. Based on the thickness and material of the bag, you can have a small domestic heat sealer or an industrial heat sealer.
Sealing Clip
Small and handy, to be used at home or in the office, it seals fast but is not designed for permanent storage.
Tape Dispenser
Easy to apply and for general sealing needs.
Sealing Precautions
- Check inside layer of Kraft paper bag for heat-sealable film; only bags with film can be heat-sealed.
- Pre-sealing, wipe the bag opening clean of foreign matter and keep it clean and dry.
- Use a moderate heat-sealing temperature to prevent the burning of the bag or producing a loose seal.
- For clip sealing and tape, use a tight seal to exclude air.
- Choose the right method for sealing the product, depending on the nature of the product. For instance, heat sealing is best for food packages.
Why order ready-to-stock Kraft paper bags from a specialized manufacturer?
Selecting pre-stock Kraft paper bags from an experienced packaging factory allows you to have the confidence of high-quality materials and a large range of specifications. Lebei has been a flexible packaging expert since 1995 and keeps a rich inventory of pre-stock bags to fulfill different products’ packaging requirements. No waiting for customization, and quick delivery saves procurement time and expenses.
Besides, Lebei products have undergone rigorous quality inspection to ensure food-grade safety, excellent sealing performance, and environmentally friendly materials to help customers enhance their brand image and product competitiveness.
Should you be in need of high-quality, ready-to-stock Kraft paper pouches, please feel free to contact Lebei. We have various specifications and sizes, and provide full after-sales service to help you solve your packaging problems at ease.
