Polyester non-woven felt composite technology--adhesive composite technology

As the mainstream process for the manufacture of polyester non-woven felt, adhesive composite technology occupies an important position in the field of industrial textiles with its flexible production adaptability and excellent product performance. This technology firmly combines material layers with different characteristics through the precise control of adhesive application to create functional composite materials that meet various special needs. Compared with the mechanical seam process, adhesive composite technology can achieve lighter and thinner product structure, more uniform stress distribution, and finer surface quality, so it has become the preferred solution in many application scenarios.

Modern adhesive composite technology has developed a variety of technical routes, each of which has its own unique advantages and application scenarios. Powder point bonding technology transfers hot melt adhesive powder to the substrate in a regular dot matrix through a precise engraving roller system. This process is particularly suitable for applications that need to maintain the breathability of the material. The paste point bonding uses a high-precision rotary screen printing system to achieve complex adhesive distribution patterns, giving the product special performance characteristics. The full-width gluing process forms a uniform adhesive film on the surface of the substrate through an advanced scraper or micro-gravure coating system, which is suitable for products with high sealing requirements.

The research and development of adhesive formulations is the core of adhesive composite technology. There are many types of adhesive systems available on the market today, from traditional solvent-based to environmentally friendly water-based systems, from conventional hot melt adhesives to emerging UV curing adhesives, each system has its own specific performance characteristics and application advantages. Polyurethane adhesives dominate high-end applications due to their excellent comprehensive performance; acrylic adhesives are popular in the field of daily consumer goods due to their good cost-effectiveness and environmental protection characteristics; and silicone adhesives are irreplaceable in extreme environment applications due to their excellent temperature resistance.

The quality advantages of adhesive composite products are reflected in many aspects. This process can achieve excellent surface flatness and meet the application requirements with strict requirements on product appearance. The adhesive layer can achieve full-surface bonding between materials, ensure uniform stress distribution, and avoid local stress concentration. By precisely controlling the coating amount and distribution method of the adhesive, the functional characteristics of the product such as air permeability and softness can be flexibly adjusted. Modern adhesive composite production lines also have online functional processing capabilities, which can simultaneously achieve flame retardant, antibacterial, antistatic and other functional treatments during the composite process, greatly improving production efficiency and product added value.

In the field of medical protection, materials produced by adhesive composite technology have become an ideal choice for medical supplies such as surgical gowns and protective clothing due to their excellent barrier properties and comfort. In the environmental protection industry, filter materials using special adhesive systems can meet the filtration requirements under different working conditions. The automotive interior field benefits from the characteristics of the adhesive composite process that can achieve ultra-thin and lightweight design, while meeting the dual needs of aesthetics and functionality. These successful applications fully demonstrate the wide adaptability and reliability of adhesive composite technology.