Polyurethane Based Primer

Guangdong Yrbest High Polymer Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of polyurethane based primer in China. Welcome to buy durable polyurethane based primer at competitive price from our factory. If you have any enquiry about quotation and free sample, please feel free to email us.

You've probably run into this before: PU materials that have been printed, rubbed, or given a complex surface finish are hard to bond. Our polyurethane based primer 219K is a high-performance surface treatment agent specifically developed to solve this problem. It's especially suitable for PU substrates with heavy ink loads, thick pigment layers, and complex surface finishes-like printed PU leather, rubbed leather, and various coated synthetics. Its formula combines strong penetrating power with deep cleaning action, precisely preparing the substrate surface by removing all kinds of bonding barriers, laying a solid foundation for subsequent adhesive application.

Whether it's surface contaminants, silicone release agents, loose pigment particles, or excess colorants-all those things that form weak boundary layers and interfere with bonding-it removes them thoroughly. Through controlled etching and surface activation, it significantly improves the wettability of the substrate surface, making the bond much stronger. Its advantages really stand out in complex situations where conventional primers fall short. One thing you must remember: after brushing the primer, be sure to oven-dry it. Only when the solvent has completely evaporated will the primer reach its full effectiveness-this step is absolutely essential.

Polyurethane based primer 219K has a wide range of applications, not only in shoemaking but also in leather goods, technical textiles, and more. It's especially suitable as a pretreatment for printed, painted, or embossed PU materials, delivering very stable results. Whether for sole bonding, material lamination, or multi-layer adhesion-these key processes-this specialized primer gets the job done. It effectively prevents delamination, improves bond strength, and stays stable even in humid conditions or under stress, thereby extending the service life of your products.

1. After cleaning the shoe material surface, evenly apply this primer using a brush or cloth.
2. Drying time: Dry in an oven at 55±5°C for 2–4 minutes before applying the adhesive.
3. Apply the adhesive evenly and completely, avoiding insufficient coverage or excessive buildup.