Hot Pressing:
- Principle: Utilizes high temperature and pressure to bond leather with the substrate. During the hot pressing process, physical or chemical changes occur at the interface where the leather and substrate contact, achieving a strong connection. For instance, in automotive interior production, a framework with a hot melt structure can be fixed to the covering layer using the hot pressing process, ensuring a convenient and secure connection between the two. Common methods of hot pressing include hot air melt and pulse hot pressing, depending on the heating method used.
- Advantages: Hot pressing provides a high bonding strength for the covering, reducing issues such as delamination and bubbling; it is suitable for covering various materials, such as leather, plastic, and rubber; it offers relatively high production efficiency, making it suitable for large-scale production.
- Disadvantages: The process requires precise control of equipment and parameters such as temperature, pressure, and time; otherwise, it may affect the quality of the covering. For products with complex shapes or special requirements, hot pressing might not fully meet the needs.
Sewing:
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JINQ provides expert leather wrapping services, including hot pressing, sewing, edge painting, and custom leather solutions for electronics, packaging, gifts, stationery, and automotive interiors.
- Principle: Involves stitching the leather onto the substrate using needle and thread, a traditional covering method. During sewing, the choice of thread and stitching techniques must align with the product’s design and requirements to ensure a strong connection and good appearance of the leather on the substrate.
- Advantages: Sewing allows for detailed covering effects and is advantageous for products requiring special shapes or detail processing; it offers flexibility for personalized design and production; the equipment and tools are relatively simple, resulting in lower costs.
- Disadvantages: Sewing has lower production efficiency and higher labor intensity; threads can wear out and break, affecting the longevity of the covering; for large-scale covering needs, sewing may not be suitable due to the multiple stitching points affecting the product’s appearance and feel.
Adhesive Application:
- Principle: Involves using glue or adhesive to attach the leather to the substrate. Before applying the leather, the surfaces of both the substrate and leather must be prepared to ensure proper adhesion. Adhesive application can be categorized into manual and mechanical methods; manual application is suitable for small batches and personalized products, while mechanical application is used for large-scale production.
- Advantages: Adhesive application is straightforward and easy to master; it can be used for substrates of various shapes and materials, offering wide application range; it enables quick completion of the covering process with high production efficiency.
- Disadvantages: The quality and bonding strength of the adhesive can affect the quality of the covering, with issues like peeling or detachment; adhesives may impact the environment and human health; for products subjected to high stress or friction, adhesive application may lack sufficient durability.
