The body is woven from flat polypropylene tape and sewn into a bag with 4 lift loops, so it can be lifted directly by forklift or crane. Safe working loads (SWL) range from 500 to 1500 kg. This bag is the single-trip open top + flat bottom configuration, for one-time collection and disposal of plant waste. Typical contents include factory waste, metal chips, plastic pellets, chemical raw materials and sand.
Specifications (typical range)
| Item | Range |
|---|---|
| Body | Woven flat polypropylene (PP) tape |
| Fabric weight | 130–220 g/m² (general industrial); UV treatment optional |
| Construction | Open top + flat bottom (this bag) |
| Other options | Top spout / bottom discharge spout / conical bottom / side fill openings (custom) |
| SWL | 500, 800, 1000, 1200, 1500 kg (general case; depends on the application) |
| Safety factor | Single trip 5:1 / multi-trip 6:1 to 8:1 |
| Lift loops | 4 (standard) / 2 (small) / 1 (center loop) |
| Common sizes | L90 × W90 × H100 cm / L100 × W100 × H170 cm / L110 × W110 × H120 cm |
| Liner options | PE waterproof liner (fine powders, chemicals) / aluminum foil liner (moisture barrier) |
| Color | White (standard) / black (UV resistant) / custom printing |
Values are typical ranges for PP woven bulk bags; actual load, size and configuration depend on the application.
How PP woven fabric is made
PP resin → extruded film → stretched and slit into flat tape (1.5–3 mm wide) → woven on a loom (130–220 g/m²) → sewn into a bag. It works like a traditional jute sack, with PP instead of natural fiber.
Pros: high strength (stretching orients the molecules), resists most chemicals, does not absorb water, recyclable. Cons: poor UV resistance (becomes brittle after 3–6 months outdoors) unless treated with carbon black or UV stabilizer.
Typical uses in electronics plants
| Use | Recommendation |
|---|---|
| SMT line waste (solder paste residue, used fixtures, cleaning consumables) | Single-trip bag so residue does not carry over; choose the right Type for the contents; antistatic bags on request |
| Metal recovery from dismantled machines | 1200–1500 kg heavy-duty bag with PE liner against moisture and rust |
| Chemicals / neutralized sludge | PE liner against leaks + top spout to limit evaporation |
| Packaging / carton recycling | Low-density loads can be filled to the top; 500–1000 kg class is usually enough |
Selection guide
| Use | Configuration | SWL | Liner | Note |
|---|---|---|---|---|
| SMT waste | Open top + flat bottom | 500–800 kg | None | Single trip; choose Type by contents |
| Metal chips | Open top + flat bottom | 1200–1500 kg | PE moisture barrier | Single or multi-trip |
| Chemical sludge | Top spout + flat bottom | 1000–1200 kg | PE leak-proof | Label clearly |
| Packaging recycling | Open top + flat bottom | 500 kg | None | Single trip |
| Raw material handling | Top spout + bottom discharge (conical) | 1000 kg | PE or aluminum foil | Multi-trip |
Safety factor: 5:1 vs 6:1 vs 8:1
| Safety factor | Number of uses | Typical use |
|---|---|---|
| 5:1 | Single trip (1) | Waste, contaminated residue |
| 6:1 | Multi-trip (5–10) | Metal chips, plastic pellets, raw materials |
| 8:1 | Multi-trip (10+) | Food, pharmaceuticals, high-value materials |
A 1000 kg 5:1 bag must withstand 5000 kg before failure. A single-trip bag costs less per bag, but a 6:1 bag reused 5–10 times can cost less per trip (general case). This bag is single trip (5:1); 6:1 / 8:1 bags are available on request.
Antistatic Type A / B / C / D (IEC 61340-4-4)
| Type | Static control | Powder MIE | Grounding |
|---|---|---|---|
| Type A | None | Not for combustible powders | — |
| Type B | Low breakdown voltage | Powders with MIE > 3 mJ (not where flammable gas or solvent vapor is present) | No |
| Type C | Conductive threads | Any MIE (also IIA / IIB flammable gas or vapor, MIE ≥ 0.14 mJ) | Yes (must be grounded) |
| Type D | Static-dissipative threads | Same as Type C | No |
For combustible powders (such as waste contaminated with organic solvents), use Type C or D; for general waste, metal chips and plastic pellets Type A is enough. Type C must be grounded, so the site needs ESD grounding points. Please confirm the antistatic type of this bag when you request a quote; Type B / C / D bags are available on request.
Use and storage tips
- Do not overload: 1200 kg is the SWL; fill by weight, not volume. Dense materials (metal, sand) reach the limit half full.
- Fill evenly: uneven loading overstresses one loop and can break the stitching.
- UV outdoors: untreated PP becomes brittle after 3–6 months in the sun; choose a UV-treated bag (on request) or cover it.
- Stacking: 1–2 high inside the plant; the bottom bag must be full and stable. Stacking 3 or more needs bags designed for it (reinforced corners, on request).
Standard
IEC 61340-4-4:2018, Electrostatics – Part 4-4: Electrostatic classification of flexible intermediate bulk containers (FIBC), Ed. 3.0, International Electrotechnical Commission (IEC).
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