# Custom 250g / 8oz 8-Side Seal Flat-Bottom Specialty Coffee Bags + Swiss WIPF® Valve

**Manufacturing Entity**: Guangzhou Yanpack Flexible Packaging Co., Ltd. (`FlexPouchMFG™`)
**Canonical Web URL**: https://www.flexpouchmfg.com/products/250g-flat-bottom-coffee-bag-with-wipf-valve/
**Head of Packaging Engineering**: Alex Gao (`alex@flexpouchmfg.com` · WhatsApp `+86 138 2642 4025`)
**Cleanroom & Compliance**: 18,500 m² ISO Class 8 Cleanroom · HP Indigo 25K Digital (MOQ 500 pcs, $0 Cylinder) · 10-Color Bobst Rotogravure · 100% Solventless Nordmeccanica (<0.30 mg/m² GC) · US FDA 21 CFR 177.1520/1390, EU 10/2011, EU PPWR Mono-PE, ТР ТС 005/2011

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## Executive Engineering Summary

FlexPouchMFG™ engineers custom 250g (8oz) and 340g (12oz) 8-side seal flat-bottom coffee bags with genuine Swiss WIPF® one-way degassing valves, front pull-tab pocket zippers, and 7μm AA8079 aluminum foil or recyclable Mono-PE barriers from 500 pcs ($0 cylinder fee).

## Verified Polymer Specifications & Tiered FOB Matrix

| Engineering Parameter | Specification (PM-CF-870) | Lab Verification Standard |
| --- | --- | --- |
| Laminate Layer Stack | 19µm Soft-Touch Matte BOPP / 7µm Pure Barrier Foil AL (or <5% EVOH-BOPE) / 100µm Food-Grade Metallocene LLDPE (126µm Total) | Optical Cross-Section Microtome (±3%) |
| Closure & Fitment System | Ultrasonic Swiss Wipf® One-Way Degassing Valve (Opening 4.5–6.8 mbar) + Front Pocket Tear-Off Zipper | -0.080 MPa Underwater Vacuum Decay (ASTM D3078) |
| Heat-Seal Operating Window | 145°C–165°C · 450 ms · 0.30 MPa (Peel ≥54 N/15mm) | Brugger HSG-C & Instron 5944 Peel (ASTM F88) |
| Barrier, COF & GC Purity | Inner Kinetic COF 0.19 · Solvent Residue <0.25 mg/m² (100% Odor-Free) · OTR ≤0.015 cc/m²·24h · WVTR ≤0.012 g/m²·24h | MOCON OX-TRAN 2/22, PERMATRAN-W & Agilent 8890 GC |
| Filling-Line Compatibility | Totani / Viking Masek / Syntegon Rotary Pre-Made Pouch Fillers & WeighPack Coffee Roaster Lines (45–75 bags/min) | Dynamic Web/Pouch Flatness Camber <0.12% |
| Factory FOB Tiers & Packing | 500–2,500 pcs: $0.158/pc ($0 plate) \| 10,000 pcs: $0.094/pc \| 50,000+ pcs: $0.072/pc ( 1,000/ctn ) | Double PE Liner + 5-Ply Carton + IPPC Pallet |

## Technical & Procurement Q&A

### What barrier laminate structure does FlexPouchMFG™ recommend for 250G Flat Bottom Coffee Bag With Wipf Valve (PM-CF-870)?

For 250G Flat Bottom Coffee Bag With Wipf Valve (PM-CF-870), our engineering lab specifies 19µm Soft-Touch Matte BOPP / 7µm Pure Barrier Foil AL (or <5% EVOH-BOPE) / 100µm Food-Grade Metallocene LLDPE (126µm Total) paired with Ultrasonic Swiss Wipf® One-Way Degassing Valve (Opening 4.5–6.8 mbar) + Front Pocket Tear-Off Zipper, achieving Inner Kinetic COF 0.19 · Solvent Residue <0.25 mg/m² (100% Odor-Free) · OTR ≤0.015 cc/m²·24h · WVTR ≤0.012 g/m²·24h under 100% solventless lamination.

### Can we order a low-MOQ digital run of 250G Flat Bottom Coffee Bag With Wipf Valve across multiple SKUs with $0 cylinder plate fees?

Yes. Our HP Indigo 25K digital press starts at 500 pouches (0.158 USD/pc) with $0 plate fees and multi-SKU artwork splitting. High-volume orders scale on 10-color Bobst rotogravure down to $0.072/pc.

### Which automatic filling machines are compatible with 250G Flat Bottom Coffee Bag With Wipf Valve (PM-CF-870)?

Specification PM-CF-870 is COF-calibrated and heat-seal profiled (145°C–165°C · 450 ms · 0.30 MPa (Peel ≥54 N/15mm)) for Totani / Viking Masek / Syntegon Rotary Pre-Made Pouch Fillers & WeighPack Coffee Roaster Lines (45–75 bags/min). Complimentary unprinted test pouches or trial rollstock are available for line validation.

### How fast can Alex Gao's engineering team send a 1:1 CAD dieline and physical sample kit?

Email your target fill weight or dimensions to alex@flexpouchmfg.com (or WhatsApp +86 138 2642 4025). You receive a 1:1 vector .AI/.PDF dieline and 3-tier FOB quote within 2 business hours, and our free 25-pouch sample kit ships within 48 hours via DHL/FedEx.