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With the rapid development of medical technology and the improvement of people's health awareness, the pharmaceutical industry is experiencing unprecedented development opportunities. Pharmaceutical soft packaging, as an important link to ensure drug safety and extend drug shelf life, has increasingly stringent requirements for quality and safety. Among the many soft packaging materials, polyurethane laminating adhesive, with its excellent performance, has become a leader in the field of pharmaceutical soft packaging.
Polyurethane laminating adhesive is a high-performance adhesive made of polyurethane as the main component through a special process. In pharmaceutical soft packaging, polyurethane laminating adhesive is primarily used for the lamination of various substrates, such as plastic and aluminum foil, forming a composite film with excellent barrier properties and safety. This composite film can effectively protect drugs from erosion by the external environment, ensuring the stability and safety of drugs during storage and transportation.
Pharmaceutical soft packaging comes in various forms, such as bag packaging, strip packaging, double aluminum packaging, and blister packaging. In these packaging forms, polyurethane laminating adhesive plays a crucial role. Whether it is paper-plastic, paper-aluminum-plastic, or aluminum-plastic composite structures, polyurethane laminating adhesive can provide strong bonding and sealing effects, ensuring the integrity and sealability of pharmaceutical packaging.
The performance requirements of pharmaceutical soft packaging for polyurethane laminating adhesive are very stringent and are mainly reflected in the following aspects:
Excellent mechanical properties
Polyurethane laminating adhesive must have good bonding strength to the composite substrates to ensure that the composite film is not easily damaged under external forces such as stretching and tearing. At the same time, its peel strength and heat seal strength must also meet relevant standard requirements.
Outstanding high-temperature performance
Pharmaceutical soft packaging needs to withstand high-temperature environments during production and use. Therefore, polyurethane laminating adhesive must have excellent high-temperature performance, ensuring that the composite film does not deform, melt, or fail in adhesion under high temperatures.
Strict safety performance
The safety of pharmaceutical soft packaging is directly related to the quality of drugs and patient health. Therefore, polyurethane laminating adhesive must meet relevant safety requirements, such as controlling solvent residues, easy oxidizable substances, and leachables within a safe range.
Special functional requirements
For different types of pharmaceutical soft packaging, polyurethane laminating adhesive also needs to have some special functional requirements. For example, for cold-form aluminum products, polyurethane laminating adhesive needs to have excellent deep-drawing performance to ensure that the composite film does not crack or deform during the cold forming process.
To meet the high-performance requirements of the pharmaceutical soft packaging industry for polyurethane laminating adhesive, COMENS, as the leading enterprise in the domestic high-performance composite polyurethane adhesive industry, continuously researches and innovates, launching a series of high-quality polyurethane laminating adhesive products. These products not only have excellent mechanical properties, high-temperature performance, and safety performance but also meet special functional requirements, capable of satisfying different pharmaceutical soft packaging needs. Additionally, we provide professional technical support and solutions to ensure that customers achieve the best results when using our products.
