With the global confectionery and pastry industry embracing green transformation and consumption upgrading, packaging has entered a new iteration stage from basic protection to eco-friendly, safe and high-end composite packaging. Candies, cakes, biscuits and pastries are popular daily snacks with delicate textures, rich sugar content and high sensitivity to peculiar smells. Traditional composite packaging processes relying on solvent-based adhesives can no longer meet the industry’s dual demands for food safety and low-carbon production. Gradually becoming the mainstream choice for confectionery packaging, solvent-free polyurethane (PU) lamination adhesives create a fully green composite packaging process, driving the standardized and sustainable development of the confectionery packaging sector.
Traditional candy and pastry packaging widely adopts solvent-based laminating technology, which has long-standing industry drawbacks. The formula contains a large amount of volatile organic compounds (VOCs), and incomplete volatilization during production leads to solvent residue in composite films. These residual substances are easy to penetrate into pastries and candies, destroying their pure sweet flavor and causing peculiar odor pollution. In addition, solvent volatilization during processing generates industrial waste gas, increases carbon emissions, and brings fire risks, failing to adapt to the current food industry’s green production upgrading trend.
Solvent-free PU lamination adhesives completely reshape the confectionery packaging composite process with a 100% solid-content zero-solvent formula. Free of VOCs, benzene substances and toxic additives, the adhesive realizes pollution-free lamination processing. After full chemical curing, it forms a dense, transparent and stable adhesive layer, which perfectly fits common packaging substrates such as PET, BOPP and food-grade PE films. The optimized composite process eliminates solvent volatilization links, greatly simplifies production procedures, and fundamentally solves the safety and environmental pain points of traditional processes.
Beyond green production advantages, the material delivers excellent packaging performance suitable for confectionery products. It features high bonding uniformity and stable composite strength, avoiding bubbling, delamination and warping of pastry packaging during storage and transportation. The dense adhesive structure effectively isolates external moisture, oxygen and peculiar smells, preventing crisp pastries from dampening and candies from oxidizing and deteriorating, effectively locking the original taste and texture of snacks.
In terms of food safety compliance, the upgraded green process fully meets global food contact standards including US FDA regulations, EU food-grade specifications and China’s GB 4806 safety system. With zero solvent residue and zero harmful migration, the adhesive will not chemically react with sugar, cream and other pastry ingredients, ensuring the hygiene and safety of direct food contact, which is highly compatible with high-standard confectionery food production.
Industry insiders said that green packaging iteration has become an inevitable trend in the confectionery industry. Solvent-free PU composite technology not only improves the safety and appearance quality of candy and pastry packaging but also helps packaging enterprises reduce emission costs and optimize production safety.
As environmental supervision becomes stricter and consumer green consumption awareness rises, solvent-free polyurethane lamination adhesives will further popularize in the confectionery packaging field. Leading the green upgrading of composite packaging technology, it provides strong support for the high-quality, safe and sustainable development of the global candy and pastry industry.
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