Selection factors of adhesives for non-woven fabrics
Choosing the appropriate adhesive for non-woven fabric is crucial for ensuring the performance and quality of the final product. Here are some key selection factors:
1. The ultimate use of non-woven fabric:
Sanitary materials (such as diapers, sanitary napkins): They need to be soft, skin friendly, breathable, and have good liquid absorption and leak proof properties. Acrylate lotion and hot-melt adhesive can be selected.
Filter material: It needs to have good filtration efficiency, breathability, and chemical resistance. You can choose polyurethane, polyacrylate, etc.
Medical materials (such as masks, protective clothing): They need to be sterile, non-toxic, have good barrier properties, and comfortable. You can choose water-based polyurethane, acrylic ester, etc.
Geotextile: It needs to have high strength, weather resistance, and corrosion resistance. You can choose asphalt, polyvinyl chloride, etc.
Clothing lining fabric: It needs to be soft, washable, and heat-resistant. Hot melt adhesives such as polyamide and polyester can be selected.
2. Fiber type:
Natural fibers (such as cotton and hemp): The surface contains polar groups such as hydroxyl groups, which are easy to form hydrogen bonds with adhesives. Water based adhesives or reactive adhesives can be selected.
Synthetic fibers (such as polyester and polypropylene): have an inert surface and are difficult to bond with adhesives, requiring surface treatment or the selection of special adhesives such as polyurethane and EVA.
3. Processing technology:
Spray: suitable for low viscosity liquid adhesives, such as acrylate lotion.
Immersion: Suitable for situations where non-woven fabric needs to be completely impregnated, water-based adhesives or solvent based adhesives can be selected.
Hot pressing: Suitable for hot melt adhesives, it melts the adhesive and bonds the fibers by heating and applying pressure.
Ultrasonic bonding: Using ultrasonic energy to melt and bond fibers without the need for adhesives.
4. Cost:
The cost of adhesive is also an important factor to consider, and a balance needs to be found between performance and cost.
Other factors:
Environmental requirements: Choose non-toxic, harmless, and biodegradable environmentally friendly adhesives.
Storage stability: Choose adhesives with good storage stability and not easily deteriorated.
Operational performance: Choose adhesives that are easy to operate and evenly coated.
Choosing the appropriate adhesive for non-woven fabric requires comprehensive consideration of multiple factors and thorough testing and evaluation. It is recommended to consult professional adhesive suppliers or technicians for more professional advice and technical support.