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Everything You Need to Know About Carton Sealing

The first commercial carton was made in 1817 in England. This was 200 years before the Chinese could discover them. Today cartons are extensively used in food, hardware, plants, grocery, sanitary items and pharmaceutical packaging. A standard one is made from paperboard, layers of polyethylene or corrugated fiber. It is essential to seal the boxes well to ensure quality control. Robust sealing with the right glue also makes sure the products inside reach the customers in their intact form. Brand image and consumer trust are other factors which are highly dependent on the packaging.

Hot melt adhesives are ideal for closing carton flaps. This is a powerful polymer-based synthetic resin which liquefies when heated. It is commonly sold in the form of 100% solid formulations. The demand for hot melt adhesives is expected to reach $12,675.5 million by 2030 at a 5.3% CAGR. Let us look at how this glue is helpful in carton sealing. Read on.

It can streamline manufacturing procedures and offer high-end protection to the carton content. Picking trusted brands and cutting-edge adhesives from a reliable adhesive manufacturer can offer benefits like:

  • Bio-based and sustainable formulations

  • Global regulatory compliance

  • Great cost-performance ratio

  • Careful raw material selection for human health

  • Qualitative and quantitative assessments

All of these are also helpful in boosting consumer confidence in product safety. Look for a store in North America that can offer adhesive recommendations so you can pick the one that is best suited to your needs and budget.

Applying Hot Melts for Carton Sealing

Open time and proper application temperature are extremely vital for strong hot-melt adhesion. When sealing cartons, it is important to understand open time in order to pick the correct Hot Melt. Open time is the time after the adhesive is applied during which a serviceable bond can be made. :

TECHNOMELT 8990 SF is ideal for applications with short open time

It is also important to know the working temperatures of your Hot Melt. Conventional Hot Melts are design to run at 350°F and Cool Melts are design to run at 250°F. Working outside the recommended temperatures can lead to glue failures. You can read more about that in one of latest blog posts by clicking here.

TECHNOMELT COOL 250A is a great Cool Melt option

Hot Melts must be carefully applied on one flap. Then placed in contact with the surface of the secondary flap. Now a bond is formed via compression which ultimately closes the carton. Poor compression can lead to failures.

Why Using Hot Melts is the Right Closure Method

Hot melt adhesives are affordable and are a whopping 50-75% less costly than tapes. This way you save plenty of money in the future. Hot melts are highly compatible with numerous structural polymers, have a low melt viscosity and show a high softening point. They offer long-term firm bonds along with a professional appearance. Tapes tend to tear from minor nicks. Hot melts can be easily applied by non-contact methods like spraying, rolling, or extruding. Tapes are more hands-on which might cause skin reactions after prolonged usage.

Contact our customer care executives; we can help you choose the right product for your application.


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