News

PU leather, also known as polyurethane leather, is one of the artificial leathers, and its main material is polyurethane. Because it looks and feels like real leather, it is often used in shoes, handbags, furniture and other fields.

The significant advantages of PU leather are as follows:

1. Economical: Because of its relatively low production cost, the selling price is lower than that of real leather.

2. Wear resistance: It has excellent wear resistance and is suitable for daily use.

3. Easy to clean: The surface is smooth and easy to clean, just wipe it with a damp cloth.

4. Diverse designs: It provides a variety of colors and textures to meet the needs of various consumers.

5. Environmentally friendly characteristics: Modern manufacturing technology makes PU leather have less impact on the environment.

However, PU leather may foam during processing, and the reasons include:

1. Poor quality of raw materials: The use of inferior or impure polyurethane materials may cause gas release and generate bubbles.

2. Uneven mixing: During the batching process, if the ingredients are not fully mixed or the mixing time is insufficient, bubbles are likely to occur.

3. Exothermic reaction: If the exothermic reaction during the curing process of polyurethane is not handled properly, the temperature rise may also lead to gas release and bubble formation.

4. Excessive humidity: The humidity in the production environment is high, and water penetrates into the material and evaporates, forming bubbles.

5. Improper use of adhesives: Adhesives with strong volatility or incomplete drying may also cause bubble formation during the curing process.

The role of defoamers in PU leather is as follows:

1. Prevent bubble generation: Defoamers can effectively reduce the surface tension of liquids and reduce bubble formation.

2. Improve product quality: Defoamers help improve the appearance and stability of PU leather and reduce defects.

3. Improve production efficiency: Defoamers accelerate the production process, avoid stagnation due to bubble problems, and improve efficiency.

4. Wide applicability: Defoamers are suitable for all walks of life, such as coatings, inks and glues, to improve product performance.