PVC backing calender process and scraping process

PVC backing calender process and scraping process differences and advantages:

1. Different gloss:knife coating process products are brighter

2. Different toughness:knife coating processed with paste resin and calcium powder to make a paste state, and the material impurities are less, soft, good toughness; Calendering products generally use knife coating process products scraps plus paste resin plus calcium powder to make a paste state, To process, more impurities, harder than scraping products, poor toughness.

3. Different viscosity (feel) :Knife coating process products slightly sticky to the hand.Scraping products feel smooth.

4. Different processing methods:

The knife coating processed with paste resin and calcium powder to make a paste state, lay it flat on the Teflon tape, after passing the scraper, place the carpet sheet (with edge) or carpet roll (without edge),after oven drying, if with edge then use aluminum alloy square tube as a ruler cutting.

Calendering products are generally scraped and coated with cut waste and a variety of PVC waste plus paste resin plus calcium powder, it is heated with a screw and extruded into mud.

Extruded by two rollers (blanket on one side and PVC mud on the other). The roller surface of PVC mud has a pattern, and there is circulating cold water in the cylinder to cool down and prevent adhesion.

5. Different materials: knife coating process products are new materials, do not use recycled materials;The calendering products are made of recycled materials.

6. Reprocessing methods are different: knife coating material has low melting point,can not bear high temperature,thawing easily,unembossed;Calendering material has high melting point,high temperature resistance,embossing.