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Cross non woven fabric/ Cambrella Fabric
Does non-woven fabric coating affect product quality?
by：Sunshine
2021-04-07
In the production of diapers, sanitary napkins, medical products and adult care non-woven products, it is difficult to find an ideal improvement plan. Many competitive products can provide more excellent wear resistance, non-stick and sliding properties or a combination of these properties. Idler rollers, guide rollers, steering rods, folding plows, compression plates and vacuum rollers are only part of the workpiece that needs coating to improve performance. How to choose the best coating for these workpieces?
Non-stick performance
Teflon is a non-stick 'miracle'. It was invented by Dr. Plunkett of DuPont 50 years ago. Although since that time, many new non-stick products have entered the market one after another, but they are only slightly better. Because the non-stick performance of the product was very good at the beginning, people worked hard to improve its abrasion resistance. However, the non-stick properties of even the best Teflon products cannot prevent the PSA hot melt adhesive from sticking to the deflection roller. Even if the coating is durable enough, it can only last for a few days at today's production speed.
20 years ago, this product to improve the wear resistance and non-stick performance of the coating was developed. It created a very hard substrate and applied the non-stick coating to the peaks and valleys of the substrate. Optimize non-stick performance. The substrate is realized by applying a metal layer to the substrate using the form of thermal spraying. This makes the surface very rough and full of hard spots, which can protect the non-stick coating applied on it. The creation of a nodular surface also enhances the non-stick performance.
Wear resistance
The micro-hardness, bonding strength and application method of the matrix particles are the keys to abrasion resistance. When the non-stick coating of the top layer wears away, even a hard substrate is useless. To give an example, carbide is a very hard and wear-resistant matrix. It is widely used as serrations on saw blade cutting tools. If a wear-resistant coating is applied to carbide, the material is too dense to penetrate the polymer coating. If it is applied to a sponge-like matrix, there is room for the polymer to penetrate. The problem with the porous matrix is u200bu200bthat the bonding strength of individual particles is reduced, which causes the tungsten particles to wear off the cobalt binder prematurely. In addition, carbides often have sharp corners, which will drag the non-woven fabric or hook the poly sheet.
Non-stick performance
Teflon is a non-stick 'miracle'. It was invented by Dr. Plunkett of DuPont 50 years ago. Although since that time, many new non-stick products have entered the market one after another, but they are only slightly better. Because the non-stick performance of the product was very good at the beginning, people worked hard to improve its abrasion resistance. However, the non-stick properties of even the best Teflon products cannot prevent the PSA hot melt adhesive from sticking to the deflection roller. Even if the coating is durable enough, it can only last for a few days at today's production speed.
20 years ago, this product to improve the wear resistance and non-stick performance of the coating was developed. It created a very hard substrate and applied the non-stick coating to the peaks and valleys of the substrate. Optimize non-stick performance. The substrate is realized by applying a metal layer to the substrate using the form of thermal spraying. This makes the surface very rough and full of hard spots, which can protect the non-stick coating applied on it. The creation of a nodular surface also enhances the non-stick performance.
Wear resistance
The micro-hardness, bonding strength and application method of the matrix particles are the keys to abrasion resistance. When the non-stick coating of the top layer wears away, even a hard substrate is useless. To give an example, carbide is a very hard and wear-resistant matrix. It is widely used as serrations on saw blade cutting tools. If a wear-resistant coating is applied to carbide, the material is too dense to penetrate the polymer coating. If it is applied to a sponge-like matrix, there is room for the polymer to penetrate. The problem with the porous matrix is u200bu200bthat the bonding strength of individual particles is reduced, which causes the tungsten particles to wear off the cobalt binder prematurely. In addition, carbides often have sharp corners, which will drag the non-woven fabric or hook the poly sheet.
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