Quartz Stone Pva Mold Release Film Pasted On Rubber Mold With
Specific Glue
PVA water soluble film
PVA film can be used as a kind of demolding film with excellent
performance when making parts of unsaturated polyester, epoxy resin
or other thermosetting resin. At present, PVA film has been widely
used in the production of demolding artificial marble, quartz stone
and so on. At present, we mainly export demoulding film to Korea,
Vietnam, Italy and Canada.
Advantage:
1. From the performance, not easy to produce, after stripping
blanks, save grinding time.
2. With a high degree of softness and smoothness, PVOH film can
make a more fitting mold, film of higher quality.
3. Heat resistance: can heat up to 190 degree C.
4. Good mechanical properties: tensile strength, elongation rate.
5. Suitable for continuous production, high efficiency
Water-soluble film technical date:
| Test Item | | Standard Index |
| Tensile Strength(MPA) | MD | 55.4 |
| | TD | 60.0 |
| Tensile Elongation(%) | MD | 226 |
| | TD | 387 |
| Young's Modulus | MD | 91.1 |
| | TD | 95.1 |
| Moisture Content(%) | | 5.5 |
| Plasticizer Content(%) | | 14.0 |
Water-soluble (PVA) film applicaton:
1. Our water soluble film can be used in detergent packaging, such
as dish washing detergent for dish-washing machine, washing powder.
2. The PVA film can help to demould in the production of artificial
marble, it can be use for water transfer printing.
3. Our water soluble film is widely used in the agriculture, such
as packing the seed and fertilizer.
4. Our water soluble film can be made into all kinds of PVA bag.
Blown film process or inflation film process:
Blown water soluble film refers to a process in which PVA raw
materials are processed into particles by appropriate
modification,then melted with heat and then blown into PVA film,the
details are as follows:
Firstly, the PVA particles are added to the extruder, the PVA
particles will be melted by screw feeding, shearing, and heating.
The molten PVA material is continuously extruded through a filter
screen and a perforated plate from a circular die of a machine
head, and is a ring-shaped membrane tube having a uniform
thickness. At the same time,the proper amount of compressed air is
blown into the membrane tube from the lower part of the machine
head to inflate it radially, and is longitudinally drawn by the
upper traction roller of the traction frame, then the cooling air
ring located at the upper part of the machine head blows cold air
to the outer surface of the bubble, so that the bubble cools and
the air is cooled under the traction bubble, and is pressed by the
herringbone plate (the wide blown film needs to be inserted). Under
the action of the lower traction device, the film is crimped into a
film roll by a guide roller.
Above all, our company uses PVA polymer to extrude tubular film
blanks in a better melt. In the flowing state, the tube film is
inflated to a desired thickness by high-pressure air, and after
cooling, it becomes the beautiful water-soluble film.
