Factors affecting the adhesion of non-woven fabrics
pile non-woven fabricIt's a fabric. It can be formed into a network structure and then reinforced by mechanical, thermal bonding or chemical methods. What are the factors that affect the bonding strength of this fleece non-woven fabric.
The adhesive wetting the surface of the adhesive substance is uniformly distributed due to intermolecular forces. In general, the contact angle can be used to indicate the degree of wetting of a liquid on a solid surface, and can be used as the three-phase interface point of contact between a droplet, a solid and a gas. It can be seen that the smaller the contact angle, the better the degree of wetting of the pile non-woven fabric.
2. Adhesive diffusion
The binder of the fleece nonwoven fabric also needs to have a certain diffusion property. By diffusion, adhesion molecules and some debris can cross the interface to form a diffusion interface region. Complete wetting, diffusion, etc. The proximity between the adhesive and the molecules of the material to be bonded is facilitated. If the distance is less than 0.5 nm, a molecular attraction or binding force favorable for binding can be generated.
3. Mechanical combination method
Mechanical bonding means that the adhesive penetrates into the pores of the bonded material or between the surfaces of the bonded material, and the cured adhesive bonds the bonded material together.
The pile non-woven fabric is directly spun into a web by polypropylene thermal bonding, and the strength is better than that of ordinary staple fiber products. Its strength is non-directional, vertical and horizontal directions are similar to its strength. It is made of non-woven polyester fiber and polyester fiber, and is made by needle punching technology. It can be made in different thickness, feel and hardness. How to deal with the waste generated in the production process of this pile non-woven fabric?
Waste treatment method: Although it is waste, it can be turned into high-quality finished fleece non-woven fabrics after careful treatment. After cutting in the production of fleece non-woven fabrics, some fabrics still have a lot of surplus. These waste materials are very suitable for making small accessories, and also very suitable for making stuffed toys or other toys.
Because the outsourcing price of waste materials is relatively low, but the price of the finished product is as described above, is the profit margin large? Of course, some pile non-woven products have high quality requirements, except for those that cannot be made in waste like PP waste, so pile non-woven waste is used to make various finished products, such as reusable shopping bags, clothing interlining, packaging interlining and so on.
When the pile non-woven fabric is stored in different seasons, it needs to be cleaned, ironed, and dried, then sealed with a plastic bag and placed flat in the wardrobe. Pay attention to shading to prevent fading. Be sure to ventilate, remove dust and dehumidify, and do not expose to the sun.