Following the successive launch of retort-resistant, low-odor and high-speed compatible solvent-free polyurethane (PU) laminating adhesives, the domestic adhesive enterprise has officially unveiled its upgraded full-series new solvent-free PU composite adhesive portfolio after years of in-depth industry layout and continuous technological iteration. Rooted deeply in the green adhesive track for years, the company has completed comprehensive technical coverage targeting mainstream pain points of flexible packaging lamination, marking that domestic independent adhesive R&D capability has stepped into a new stage of systematic, customized and full-scenario service.
Driven by dual policies of global carbon neutrality and stricter packaging safety supervision, the flexible packaging industry is speeding up the phase-out of traditional solvent-based adhesives. Solvent-free PU composite adhesives have become the mainstream development direction of packaging bonding materials thanks to zero VOC emission, no solvent residue and low production energy consumption. However, most domestic adhesive manufacturers used to focus on single-product research and fail to build a complete product system matching diverse packaging scenarios. Fragmented adhesive products cannot meet one-stop procurement demands of large packaging enterprises, restricting the overall green transformation progress of the upstream and downstream industrial chain.
Against this industrial background, the enterprise has adhered to long-term technological research and development instead of blind capacity expansion over the past five years. It has built a professional R&D center focusing on polyurethane adhesive molecular modification, rheological optimization and curing mechanism research, and established a complete testing laboratory covering retort resistance, odor detection, high-speed operation simulation and bonding durability tests. Centering on segmented demands of food packaging, high-end daily chemical packaging, pharmaceutical sterile packaging and large-volume industrial composite production lines, the technical team carries out targeted customized formula development to solve segmented industry difficulties one by one.
The newly released integrated new solvent-free PU composite adhesive system integrates three mature star products launched previously, covering three core segmented application scenarios. The high-temperature retort-resistant version adapts to high-pressure sterilization food packaging such as meat retort pouches; the low-odor optimized version serves high-end cosmetic and personal care packaging with ultra-strict odor requirements; the high-speed matching version supports ultra-high-speed lamination production lines up to 450m/min for mass production orders. Besides, the R&D team adds two universal general-grade models for ordinary food and light industrial packaging, realizing full coverage from high-end customized scenarios to conventional universal scenarios.
Compared with scattered single adhesive products on the market, this holistic composite adhesive system boasts unified raw material compatibility, consistent construction parameters and standardized curing conditions. Packaging manufacturers can realize unified equipment debugging, unified storage management and unified production process control after switching to this full-series product line, greatly simplifying daily production management links. All products in the portfolio comply with global authoritative safety certifications including FDA food contact standard, EU REACH regulation and China GB 4852 national safety standard, with stable safety performance applicable to all export-oriented packaging orders.
In terms of core technological advantages, the whole series of products adopt independently developed low-monomer polyurethane prepolymer technology, which effectively reduces free isocyanate monomer content and further improves product safety and environmental performance. Meanwhile, the unified formula platform reduces overall R&D and production costs, helping downstream customers cut comprehensive procurement costs by 25% to 35% compared with imported equivalent full-series adhesives. The enterprise has built intelligent automated production lines to guarantee stable batch consistency of adhesives and avoid performance fluctuation among different batches.
Company officials stated that long-term technological accumulation and industry-focused research are the core competitiveness of domestic adhesive brands. In the next stage, the enterprise will continue to deepen layout in biodegradable adhesive, low-temperature fast-curing solvent-free adhesive and ultra-thin film special bonding materials, targeting emerging demands brought by biodegradable packaging and lightweight packaging. With continuous technological empowerment, the enterprise will further reduce the domestic packaging industry’s dependence on imported high-end adhesives and lead the high-quality and low-carbon upgrading of China’s green adhesive industry.
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