BHB® White-black-white Film BM700J 180micron

Products Details

BHB® BM700J is an extra-heavy-gauge 180μm (7.2 mil) 3-layer co-extruded white black white film engineered for extreme-duty light deprivation, high-stress commercial automated systems, and harsh environmental installations. Featuring a dense carbon black core enclosed by dual outer high-reflectance white layers, BM700J delivers absolute 0% PAR photoperiod blackout alongside maximum thermal radiation rejection. Built as a top-tier heavy-duty option within our greenhouse covering materials collection, BM700J withstands high mechanical friction, wind whipping, and extreme solar exposure across multi-season commercial operations.

Targeted Performance Benefits

• Ultra-Heavy-Duty 180μm Protection: Thick 7.2 mil gauge offers exceptional tensile strength, puncture resistance, and tear mitigation against heavy mechanical stress and high-wind loads.

• Dual-Face Solar Thermal Reflection: High-purity outer white faces reflect up to 88% of incoming solar thermal radiation, keeping interior greenhouse zones substantially cooler during daylight light-dep periods.

• Guaranteed 100% Photoperiod Blackout (0% PAR): High-density inner black core provides total opacity, preventing any light transmission to maintain strict flowering and growth schedules.

• High Mechanical Endurance for Automated Curtains: Formulated to resist surface abrasion and structural stretching along motorized roll-up systems, side-curtain guides, and ridge tracks.

• Maximum UV & Chemical Stabilization: Fortified with specialized chemical-resistant UV inhibitors to withstand sulfur vapors, pest treatments, and high solar radiation without yellowing or embrittlement.

Installation & Operational Practices

• System Alignment & Tensioning: Ensure smooth, uniform tension along drive shafts and guide wires to prevent tracking errors on wide-span automated curtains.

• Hardware Inspection: Verify all framework contact points, locking profiles, and curtain edges are smooth and free of sharp burrs.

• Surface Maintenance: Periodically clean dust or environmental residue off the outer white surfaces to maintain peak light reflectivity and cooling efficiency.

Warranty Conditions

BHB® BM700J is backed by a factory-direct pro-rated commercial warranty:

• 2.5-Year Warranty: High-UV regions, Middle East, and Central Africa.

• 3.5-Year Warranty: East Asia, Southeast Asia, North/South America, Australia, and Europe.

Packaging, MOQ and Lead Time

• Packaging: Export-grade heavy-duty UV protective wrap on solid paper/plastic cores.

• MOQ & Production Capacity: Standard factory MOQ applies; backed by a large-scale annual manufacturing capacity.

• Lead Time: 14–21 business days for standard and custom roll dimensions; rapid TDS and sample roll dispatch available.

White-black-white Film 180 Micron FAQ

Why select 180-micron BM700J over lighter 150-micron options?

BM700J offers higher tensile strength (27 MPa) and tear resistance (95 kN/m), making it the preferred choice for wide-span automated light-dep systems, high-wind installations, and harsh weather environments.

How do the dual white faces benefit thermal management during blackout periods?

Rather than absorbing heat via a black layer, BM700J's inner and outer white surfaces reflect thermal radiation both externally (from the sun) and internally (from greenhouse equipment), keeping the microclimate significantly cooler.

Can BM700J be manufactured in wide seamless rolls?

Yes, BM700J can be co-extruded in custom seamless widths up to 16 meters, eliminating the need for field welds that can compromise light-blocking integrity.