Choosing the Right Kraft Paper Tape for Carton Sealing: A Guide

In the e-commerce industry, kraft paper tapes have become a popular alternative to filament tapes for carton sealing. Kraft paper gives packaging a clean, professional appearance upon delivery. One of the primary reasons for using degradable kraft paper tapes is their recyclability, especially on a large scale. However, different types of kraft paper tapes can perform differently on cartons. Below are some key varieties of kraft paper tapes offered by Kingnodes.

Flatback Tape

Flatback tapes typically use rubber-based adhesives, commonly seen in pressure-sensitive tapes. Hot melt adhesives, a variation of rubber, are ideal for fast bonding and high adhesion, especially in packaging. Hot melt provides instant bonding strength, making it perfect for sealing boxes and cartons. Kingnodes’ hot melt kraft paper tapes are designed to prevent tampering and pilfering. Among all kraft paper tapes, flatback tapes stand out for their superior adhesive strength.

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Gummed Tape

Though not as strong as flatback tapes in adhesion, gummed tapes form a biochemical bond with polar surfaces like wood pulp-based cartons. The hydroxyl groups in starch molecules create hydrogen bonds with these materials, resulting in a strong seal that hardens over time. Unlike PET or BOPP backings, kraft paper enables the use of starch-based adhesives, which are safer and free from harmful chemicals. Additionally, water-activated acrylic adhesives in kraft paper tapes are biodegradable. Acrylics become thinned when wet and can absorb small amounts of moisture when dry.

Reinforced Gummed Tape

For extra strength, kraft paper tapes are often reinforced with fiberglass. Fiberglass adds tensile strength, especially when paired with starch-based adhesives, which lack the molecular strength of synthetic adhesives. Kingnodes’ reinforced gummed tapes combine the sealing power of gummed tapes with the durability of fiberglass reinforcement.

100% Degradable Reinforced Gummed Tape

For a completely organic and chemical-free sealing solution, 100% degradable kraft paper tapes offer an eco-friendly alternative. Not all kraft paper tapes are fully degradable, but Kingnodes offers reinforced tapes that use plant-based yarn instead of synthetic materials. These yarns act as a “spine,” enhancing the tape’s durability during application. Both the kraft paper and starch-based adhesives are plant-derived, and the plant-based yarns share a similar molecular structure, providing extra resilience during sealing.

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Conclusion

Kraft paper tapes are not only recyclable due to their paper backing, but also because of the biodegradable adhesives enabled by the kraft paper layer. Even with the same kraft paper backing, sealing performance and recyclability vary between types. Kingnodes offers a diverse range of kraft paper tapes to meet different carton sealing needs.