With the rapid growth of the global processed meat market, vacuum packaging has become the standard packaging solution for cured meat, sausage, cooked meat, and frozen meat products. It effectively isolates air, suppresses bacterial growth, and extends the shelf life of meat products. However, meat packaging faces extreme challenges including vacuum negative pressure, high-temperature retort sterilization, oil corrosion, and long-term cold chain transportation. Traditional laminating adhesives often suffer from delamination, bubbling, and weak bonding, leading to packaging failure and food spoilage. Currently,solvent-free polyurethane (PU) lamination adhesives have been widely applied in meat vacuum packaging, solving bonding instability pain points and achieving large-scale industrial landing.
Different from snack and dairy packaging, meat product packaging requires ultra-high structural stability. Processed meat contains abundant grease, salt, and protein components, which are highly corrosive to composite adhesives. Traditional solvent-based adhesives have loose molecular structures after curing. Under long-term vacuum sealing and high-temperature sterilization conditions, they are prone to glue layer failure, resulting in edge cracking and interlayer separation. Once the vacuum structure collapses, external air and bacteria will invade rapidly, causing meat oxidation, mildew and deterioration, bringing huge quality risks and economic losses to food enterprises.
The newly popularized solvent-free PU lamination adhesive adopts a high-strength two-component reactive formula with 100% solid content. Without any volatile solvents, it forms a dense and tough adhesive layer after full chemical curing. This material boasts excellent adhesion to various packaging substrates such as PA, PET, CPP and aluminum foil, realizing integrated tight lamination of multi-layer composite films. Compared with traditional products, its initial bonding strength and final curing strength are significantly improved, which can firmly lock the composite film structure under extreme vacuum negative pressure.
The core advantage of the adhesive lies in its exceptional environmental and chemical resistance. It can maintain stable bonding performance without delamination or peeling during high-temperature retort sterilization at 121°C and long-term low-temperature freezing. Meanwhile, it resists erosion from meat grease and salt substances, avoiding adhesive layer aging and failure caused by medium corrosion. It perfectly adapts to the whole processing and circulation chain of meat products, effectively maintaining the integrity of vacuum packaging.
In terms of food safety, the solvent-free formula completely eliminates solvent residue risks, fully complying with FDA food contact regulations, EU food safety standards and China’s GB 4806 specifications. No toxic or harmful substances precipitate during use, which can directly contact meat products safely. Its excellent safety and stability make it suitable for high-standard vacuum packaging of cooked meat, frozen meat and ready-to-eat meat products.
Industry practitioners said that bonding stability is the core foundation of meat vacuum packaging quality. The large-scale application of solvent-free PU lamination adhesives has fundamentally solved the common problems of traditional packaging such as easy delamination and poor pressure resistance. It not only improves the yield rate of meat product packaging but also effectively guarantees product freshness and food safety.
As the processed meat industry pursues higher packaging stability and green production, solvent-free PU lamination adhesive technology will continue to penetrate the market. With reliable stable bonding performance and eco-friendly advantages, it will become the mainstream standard for meat vacuum packaging, escorting the standardized and high-quality development of the global meat food industry.
English
España
русский
Deutsch
No.188, Liangshan Road, Linghu Town, Nanxun District, Huzhou City, Zhejiang Province, China
+86 (572)
2903236
+86 (572)
2905222
+86 15088303595
+86 15088303595
