High-performance side seam and flap-sealing adhesives for carton, corrugated, paper bag and mono-carton production.
Side pasting adhesives are commonly used in the manufacture of folding cartons for food packaging, pharmaceutical cartons, personal care products, cosmetics, consumer goods, and other paperboard packaging applications, subject to the adhesive grade and end-use requirements.
Standard grades are designed for only paper-based substrates and routine carton-gluing applications, while high-performance grades are developed for more demanding operating conditions, such as higher machine speeds, specific paperboard surfaces, or challenging carton designs. The appropriate grade depends on the machine, substrate, setting requirements, and production targets.
High-performance grades provide rapid bond development, reliable seam strength, consistent machine runnability, and improved performance at higher production speeds. Their suitability should be verified through trials on the customer's actual carton-gluing equipment.
Suitable substrates may include coated and uncoated paperboard, printed carton board, and other compatible paper-based packaging materials. Bonding performance depends on surface coating, ink coverage, board absorbency, surface energy, and the adhesive grade selected.
The optimum application quantity depends on board absorbency, adhesive solids content, machine speed, seam width, nozzle or wheel design, and required bond strength. Excessive application can cause squeeze-out, slower setting, or carton deformation, while insufficient application can result in weak seams.
Side seam opening can result from insufficient adhesive application, poor wetting, low surface energy of substrate < 38 dyne, contaminated or highly coated board surfaces, inadequate compression, incorrect machine settings, or insufficient setting time. Checking the glue pattern, seam pressure, board characteristics, and adhesive condition can help identify the cause.
Stringing may be caused by unsuitable viscosity, excessive elasticity, incorrect adhesive temperature, poor nozzle or wheel settings, dried adhesive deposits, or inappropriate machine speed. The adhesive rheology and application system should be evaluated together to achieve clean glue transfer and cut-off.
Viscosity influences adhesive transfer, flow, wetting, glue-line uniformity, and application stability. An adhesive that is too thick may transfer poorly or string, while one that is too thin may cause excessive spread or squeeze-out. Viscosity should be maintained within the grade's recommended range and measured using the specified test method.
Yes. Suitable high-performance grades can be designed for high-speed carton-gluing applications.
Wheel-applied adhesives are transferred through a glue wheel or related application mechanism, while nozzle-applied adhesives are dispensed through a controlled nozzle system. The suitable adhesive must match the equipment's application method, viscosity requirements, glue pattern, and operating speed.
Keep the adhesive in sealed, compatible containers under the supplier's recommended storage conditions. Protect it from freezing, excessive heat, contamination, and evaporation. Prevent dried adhesive from entering the application system, and follow the recommended procedures for stirring, viscosity checks, and equipment cleaning.
Customers can contact the company's sales or technical service team with details of the carton-gluing machine, application method, paperboard type, machine speed, current adhesive, and specific performance concerns. The technical team can recommend a suitable grade and support application trials to evaluate bond strength, setting, consumption, and machine runnability.
