pvc and pu which material is good?
How to distinguish the fabric is pu or pvc?
Coated fabric is a kind of fabric with special processing technology, which makes the surface of the fabric form a layer of uniform covering glue, so that the fabric has more characteristics, such as wind proof fabric.
There are leather, canvas, Oxford cloth, PA coating, PU coating, PVC coating, PE coating, EVA and so on. Then, how to distinguish the fabric of the bag is pu or pvc?
pvc and pu which material is good?
The following small series for you to introduce.
The PU PU coating is PU white glue coating and PU silver glue coating.
The basic properties of PU white glue and silver glue coating are similar to those of PA coating, but the PU white glue and silver glue coating have fatter hand feel, more elastic fabric and better fastness, and the PU silver glue coating can withstand high water pressure, and the PU coating has moisture permeability, ventilation, wear resistance, etc., but the cost is high and the weather resistance is poor.
Generally speaking, synthetic leather such as PVC and PU leather are referred to as artificial leather or imitation leather.
Both PVC and PU are polyvinyl chloride (a kind of plastic), but the manufacturing process of these two products is not the same.
PVC leather in the process of manufacturing plastic particles melt mixing into a paste, in accordance with the provisions, the thickness of the uniform coating on T/C knitted fabric bottom base, and then into the foam foaming furnace, make its have can adapt to produce all kinds of different products and different requirements of flexibility, at the same time in the out surface treatment (dyeing, embossing, extinction, grinding surface polishing, burr, etc.,
Mainly in accordance with the specific product requirements to carry out).
PU leather in the manufacturing process is more complex than PVC leather, because the PU bottom cloth is a canvas PU material with good tensile strength, in addition to can be coated on the top of the bottom cloth, but also can be included in the middle, so that the existence of the bottom cloth can not be seen.
PU leather has better physical properties than PVC leather, such as resistance to twists and turns, good softness, high tensile strength and air permeability (PVC has none).
The pattern of PVC leather is made by hot pressing the pattern roller of steel;
The pattern of PU leather is hot pasted on the surface of semi-finished leather with a kind of pattern paper, and then separated from the paper leather after cooling down.
The price of PU leather is more than twice that of PVC leather, and the price of some special requirements of PU leather is 2-3 times higher than that of PVC leather.
In general, the pattern paper needed for PU leather can only be used for 4-5 times before being scrapped.
The service cycle of the pattern roll is long, so the cost of PU leather is higher than that of PVC leather.
