Product introduction
This product is made of high-performance polyolefin material, which is produced by flash evaporation, spinning and spunbonding process, and then processed by hot pressing compound process. It has high filtration accuracy, High quality, low price, is the most suitable choice to reduce the cost of membrane raw materials.
Heat shrinkage: <1.5% @100℃ 1h.
Tensile strength: 1750-2300kgf/cm2
Welding: hot pressing/ultrasonic/adhesive, melting point 110-120℃.
Material properties: hydrophobic grade 3-4. Oleophobic grade 3-4. Can be enhanced to a higher grade.
Process:
1. PO resin particles---flash evaporation---spinning---spunbonding---hot pressing. It can be directly used for welding, or compound viscose layer.
2. High-performance PO porous membrane--composite functional layer (adhesive layer or welding layer)
Product Specifications & Performance
| Type | Thickness | Structure(um) | Fitting method | WEP(Kpa) | Water depth mm*H2O cm(H2O) | Dustprooft (um) | Pressure loss | Airflow ml/cm2/min@7kpa | Performance and applications |
| HPO-WB04 | 50-120 | Monolayer/ Composite | Welding /glue | <20 | 2000 | 5.0-10.1 | <10% | >2000 | Instrument panel/car lights (flashing)/outdoor facilities/industrial containers/industrial packaging |
| HPO-WB05 | 70-150 | Composte membrane | Welding /glue | >100 | >10000 | <0.2 | 20-30% | <500 | Medical devices/equipment |
| HPO-WB06 | 60-140 | Composite membrane | Welding /glue | 20-100 | 2000-10000 | 0.2-5.0 | 10-20% | 500-2000 | Car lights (always on)/infusion set |
Influencing factors in different applications
Envirnmental factor | Lights/Dashboards /Cameras/Outdoor Lights | Infusion Air Filter | Medical Devices/Equipment/Sensors | Industrial package |
| Picture |  |  |  |  |
| Air | Need to breathe, balance the pressure, difference between inside and outside | Need to breathe, balance the pressure,difference between inside and outside | Need to breathe, balance the pressure,difference between inside and outside | Need to breathe, balance the pressure,difference between inside and outside |
Dust (PM2.5) | Intercepts dust, surface adhesion and clogging membrane pores | Intercepts dust, surface adhesion and clogging membrane pores | Intercepts dust, causing pollution and impact | Intercepts dust, causing pollution and impact |
| Heat | Need to breathe, dissipate heat, and balance temperature differences | - | Need to breathe, dissipate heat, and balance temperature differences | Sometimes needed |
| Steam | Prevents fog and condensation from high humidity | - | Prevent high humidity from affecting normal work | Prevent the goods from getting wet due to high humidity |
Liquid water /normal liquid | Prevent rain, standing water, car wash water from entering | Contact and prevent liquid leakage, while gas must be able to enter and exit | Prevent entry and contact, affecting normal work | Prevent entry and contact with use of goods from moisture |
| Special liquid | - | Good compatibility, the fibers will not fall off | Prevent entry and direct contact,affecting normal work | prevent leakage |
Bacteria & Viruses | - | Prevent entry and contamination | Prevent entry and pollution | Sometimes needed |
Applications & advantages:
● Used in conventional waterproof and breathable fields. Can replace PVDF/PTFE. Cost saving 30%.
● Waterproof and dustproof grade reaches IP65-68
● High sensitivity to pressure difference, can automatically breathe in time, average internal and external pressure difference.
● A hydrophilic layer can be coated on the inner surface of the membrane, which preferentially absorbs water vapor and condenses into water droplets to keep the humidity inside the device low.
● Coating fluorine material on the membrane surface, the performance is equivalent to PVDF/PTFE membrane. It can save cost.
