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In the field of composite flexible packaging, polyurethane adhesives have become leaders in the industry due to their excellent performance and wide range of applications. However, when faced with a plethora of polyurethane adhesive products on the market, how do you choose the adhesive that best suits your needs? The following is a detailed polyurethane adhesive selection guide, hoping to provide strong support for your decision-making.
When choosing polyurethane adhesives, the first thing to consider is the specific requirements of the packaging product. For example, factors such as post-processing temperature and the chemical properties of the product will directly affect the choice of adhesive. For packaging products that need to withstand high-temperature sterilization, choose polyurethane adhesives with excellent high-temperature resistance; for liquid food packaging containing acidic or alkaline components, choose adhesives with good chemical resistance.
The structure of composite packaging is also an important factor to consider when choosing polyurethane adhesives including solvent based adhesive for flexible packaging. For example, PE film is one of the commonly used materials in composite packaging, but different thicknesses and properties of PE films have different requirements for adhesives. Therefore, when selecting adhesives including solvent free polyurethane adhesive and water based laminating adhesive, it is necessary to fully consider the characteristics of the PE film and choose matching adhesives to ensure the firmness and stability of the composite packaging.
Dry composite equipment is one of the key pieces of equipment in the production of composite flexible packaging, and the compatibility between polyurethane adhesives and equipment is also an important factor to consider. For example, the tension control system and working speed of the equipment will affect the use of adhesives. Therefore, when selecting the polyurethane laminating adhesive, it is necessary to fully understand the performance characteristics of the equipment and choose matching adhesives to ensure smooth production processes and stable product quality.
When selecting these laminating adhesives, attention must also be paid to their technical indicators. For example, factors such as performance stability, solid content, and working concentration will directly affect the product's usage effect and production cost. Therefore, it is necessary to fully consider these indicators when making a choice, and select adhesives with stable performance, moderate solid content, and appropriate working concentration to ensure smooth production processes and stable product quality.
For food packaging polyurethane adhesives, food hygiene performance is crucial. Therefore, when choosing, you need to focus on characteristics such as no odor and compliance with food safety standards to ensure that it does not contaminate food or affect food quality.
In conclusion, choosing the right polyurethane adhesive is key to ensuring the quality and performance of composite flexible packaging products. By comprehensively considering the packaging product requirements, characteristics of composite packaging structures, compatibility with dry composite equipment, technical indicators, and food hygiene performance, we can select the most suitable polyurethane adhesive for our needs, thereby producing safe and high-quality products. As one of the leading industrial laminating adhesive manufacturers and the preferred brand of users in the domestic high-performance composite polyurethane adhesive industry, COMENS has always been committed to providing customers with high-quality products and services. We welcome your inquiries and purchases.
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