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FIBC Bag with IRIS Closure
| Parameter | Specification Options |
| Closure Mechanism | IRIS / Petal / Diaphragm Drawstring Valve |
| Material | 100% Virgin Polypropylene (PP) Woven Fabric |
| Safe Working Load (SWL) | 500 kg – 2,000 kg (Customizable) |
| Safety Factor (SF) | 5:1 (Single-trip) / 6:1 (Multi-trip) |
| Bag Construction | U-Panel, 4-Panel, Circular, or Baffle (Q-Bags) |
| Lifting Loop Options | Cross-corner, 4-Corner loops, Stevedore straps |
| Additional Protection | Optional PE Liner insertion, Anti-static (Type B, C, D), UV Stabilization |
- Description
Description
FIBC Bag with IRIS Closure | Protect and Flow-Controlled Bulk Packaging
When handling powders, small granules, or toxic bulk materials, uncontrolled discharge can lead to severe material leakage, dust pollution, and safety hazards. An FIBC (Flexible Intermediate Bulk Container) bag with an IRIS closure (also known as a diaphragm valve) provides an adjustable, choke-style neck integrated directly into the discharge spout. This allows operators to precisely regulate material flow speed, choke off the discharge mid-process, and safely tie off partially emptied bags.
At Nghe An Packaging Joint Stock Company (NAPCO), we manufacture customized FIBC bags with high-precision IRIS closures, designed from 100% virgin polypropylene resin to ensure absolute purity and structural strength.
What is an IRIS Closure and How Does It Work?
An IRIS closure operates similarly to the iris diaphragm of a camera lens. Constructed from a durable fabric sleeve or drawstring mechanism encircling the inner discharge spout, it allows operators to twist or pull the cord to constrict the opening to any desired diameter.
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Flow Rate Control: Regulate the speed of discharging dry bulk materials into hoppers, mixers, or smaller packaging units.
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Mid-Discharge Choking: Pause or completely shut off material flow mid-stream without collapsing the main bag structure.
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Dust & Spillage Prevention: Encloses the discharge stream, preventing fine powders (like flour, cement, or chemical powders) from billowing into the workplace air.
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Re-Sealability: Safely close and tie off a partially emptied FIBC bag for future use or temporary storage.
Key Technical Specifications
| Parameter | Specification Options |
| Closure Mechanism | IRIS / Petal / Diaphragm Drawstring Valve |
| Material | 100% Virgin Polypropylene (PP) Woven Fabric |
| Safe Working Load (SWL) | 500 kg – 2,000 kg (Customizable) |
| Safety Factor (SF) | 5:1 (Single-trip) / 6:1 (Multi-trip) |
| Bag Construction | U-Panel, 4-Panel, Circular, or Baffle (Q-Bags) |
| Lifting Loop Options | Cross-corner, 4-Corner loops, Stevedore straps |
| Additional Protection | Optional PE Liner insertion, Anti-static (Type B, C, D), UV Stabilization |
Primary Applications for IRIS Closure FIBC Bags
FIBC bags with IRIS closures are essential for operations requiring strict material measurement and dust containment:
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Chemicals & Plastics: Fine chemical powders, plastic resin pellets, pigments, and synthetic additives.
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Food Processing: Flour, sugar, starch, cocoa powder, milk powder, and bulk food ingredients.
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Pharmaceuticals: High-purity active ingredients and dry chemical compounds needing hygienic containment.
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Agriculture & Minerals: Fertilizers, seeds, fine quartz, cement, and powdered minerals.
Order Factory-Direct IRIS Closure FIBC Bags from Vietnam
Looking to optimize material discharge efficiency and eliminate workplace dust contamination? Nghe An Packaging Joint Stock Company (NAPCO) custom manufactures high-quality FIBC bags tailored to your exact discharge valve dimensions and load requirements.
Request a Quote & Technical Assistance:
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Export Manager: Mr. Dien
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Hotline / Direct Support: +84 98 549 5345 (WhatsApp, WeChat, Line, Viber, KakaoTalk)
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Email: Dien@napco.com.vn
