Complaint
PVC main component is polyvinyl chloride, is translucent, yellowish and transparent luster is better than polyethylene polypropylene, difference in polystyrene, along with the different dosage of additives, divided into soft hard polyvinyl chloride (PVC), soft soft, tough, feel sticky, hard ware hardness is higher than that of low density polyethylene, but lower than that of polypropylene, can appear in the inflectional bleaching phenomenon common products: plate doors and Windows wire sheath pipe sole toys stationery and so on is a kind of the use of a of a hydrogen atom replaced by chlorine atoms polyethylene polymer materials.
| Name: | PVC shrink film | ||
| Raw material: | PVC | Color: | Transparent |
| Thickness: | 15~40mic | Width: | 250mm,500mm,customized |
| Elongation: | 150-600% | Hardness: | Soft |
| MOQ: | 1000 Kilograms | Production Capacity: | 60 tons/month |
| Feature: | Moisture and dust proof | Type: | manual/hand packing, machine packing |
| Packing: | roll packing carton packing | Packaging Details: | 2-5kg/roll for by manual 15-50kg/roll for by machine |
| Tensile strength(M/CD ) | ≥90Mpa | Elongation | 100-400% |
| Shrink(M/CD) | ≥58% | Heat seal strength | ≥35Nmm |
Process:
(1) Ingredients kneading After accurately weighing the PVC resin and other additives according to the formula, put them into the high-speed kneader, kneading time 5~8min, temperature about 120ºC, after the materials are kneaded, put them in the cooler for cooling, and wait for the temperature It can be put into storage tank for use when it drops below 40~50ºC.
(2) Extrusion blown film Direct blow molding using powder, the method is similar to ordinary blown film. Extrusion temperature: machine body 160~180ºC, machine neck 180~190ºC, machine head 190~210ºC, film expansion ratio is 2~3, traction speed is 10~30m/min.
