Is polyurethane adhesive water-based?

Water-based PU (Polyurethane) adhesive is a revolutionary bonding solution primarily used in the shoe manufacturing industry. Unlike traditional adhesives, it uses water as a solvent, making it eco-friendly and safe for both users and the environment. This type of adhesive offers several benefits that make it an ideal choice for various applications.

What are the Advantages of Water-Based PU Adhesive?

Eco-Friendly

One of the most significant advantages of water-based PU adhesive is its eco-friendliness. It has low odor and zero VOCs (Volatile Organic Compounds), which means it does not release harmful chemicals into the air. This makes it safer for workers and reduces environmental impact.

Excellent Resistance

Water-based PU adhesive offers excellent resistance to yellowing, heat, aging, and hydrolysis. These properties ensure that the bond remains strong and durable over time, even under harsh conditions.

Strong Initial Adhesion

This adhesive provides good initial adhesion and strong tensile strength. It ensures reliable bonding of outsoles, midsoles, uppers, and other parts in shoe manufacturing. The strong initial grip helps in maintaining the structural integrity of the shoes.

Easy Application

The single-component formula eliminates the need for a hardener, simplifying the application process. It can be effortlessly automated using machine spray for efficient application. This ease of use makes it suitable for large-scale manufacturing processes.

Water-Based PU Adhesive is Often Used on Expensive Sports Shoes. Can It Also Be Used on Low-Cost Shoes?

Yes, water-based PU adhesive can also be used on low-cost shoes. While it is often associated with high-end sports shoes due to its superior performance characteristics, its benefits are equally applicable to lower-cost footwear.

Cost-Effective Solution

Using water-based PU adhesive can be cost-effective in the long run due to its durability and ease of application. The reduced need for additional components like hardeners saves both time and money.

Versatility

Its versatility allows it to bond various parts of a shoe effectively—whether it's outsoles, midsoles, or uppers—making it suitable for different types of footwear regardless of their price point.

Sustainability

For manufacturers looking to adopt more sustainable practices without compromising on quality, water-based PU adhesive offers an excellent alternative to traditional adhesives that may contain harmful chemicals.

In conclusion, water-based PU spray adhesive is a versatile and eco-friendly solution suitable for both high-end sports shoes and low-cost footwear. Its numerous advantages make it an ideal choice for manufacturers aiming for sustainability without sacrificing performance or durability.