# FSC Kraft Paper Tin-Tie Coffee, Tea & Artisanal Bakery Gusset Bags (Grease-Proof & High-Barrier)

**Manufacturing Entity**: Guangzhou Yanpack Flexible Packaging Co., Ltd. (`FlexPouchMFG™`)
**Canonical Web URL**: https://www.flexpouchmfg.com/products/fsc-kraft-tin-tie-window-coffee-bakery-bags/
**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™ manufactures custom-printed FSC-certified natural brown and bleached white Kraft paper side-gusset and SOS block-bottom bags featuring factory-applied dual-wire tin-tie reclosures, crystal-clear anti-fog product windows, and optional Swiss Wipf® one-way degassing valves. Unlike grease-bleeding paper bags, our interior laminates (PLA bio-film, EVOH-PE high-barrier, or VMPET/PE) lock in roasted bean aroma and bakery crispness without oil staining.

## Verified Polymer Specifications & Tiered FOB Matrix

| Engineering Parameter | Verified Factory Specification (FP-KTT-210) | QC Release Standard |
| --- | --- | --- |
| Laminate Layer Stack | 70gsm FSC Unbleached/White Kraft / Hidden EVOH-PE 50µm (or Home-Compostable NatureFlex™ + Bio-PBS 45µm) | Optical Cross-Section Microtome (±3%) |
| Closure / Valve / Fitment | Pre-Applied Dual-Wire Iron/PP Tin-Tie Top Strip + Optional Die-Cut Clear Window + Wipf® Degassing Valve | ASTM D3078 Vacuum Decay & Torque Test |
| Sealing & Thermal Window | 145°C–168°C Top Fold-Over Heat Seal (Above Tin-Tie) · Flat SOS Block Bottom Stands Upright Unfilled | Brugger HSG-C & Instron Peel (ASTM F88) |
| Barrier, Purity & Durability | KIT Level 12 Grease Resistance (TAPPI T559) · OTR ≤0.65 cc/m²·24h (EVOH Spec) · Soy/Water-Based Ink Option | MOCON OX-TRAN 2/22 & Agilent 8890 GC |
| Filling-Line Compatibility | Manual Cafe Scoop Filling, WeighPack Semi-Auto Net Weighers & Automatic SOS Block-Bottom Bagging Lines | Web Flatness Camber <0.12% |
| Factory FOB Price Range | Digital / Trial (MOQ 1,000): $0.165/pc \| Rotogravure Scale: $0.078/pc | Double PE Liner + 5-Ply Carton + IPPC Pallet |

## Technical & Procurement Q&A

### What multi-layer barrier structure is engineered for FSC Kraft Paper Tin-Tie Coffee, Tea & Artisanal Bakery Gusset Bags (Grease-Proof & High-Barrier) (FP-KTT-210)?

Specification FP-KTT-210 uses 70gsm FSC Unbleached/White Kraft / Hidden EVOH-PE 50µm (or Home-Compostable NatureFlex™ + Bio-PBS 45µm) paired with Pre-Applied Dual-Wire Iron/PP Tin-Tie Top Strip + Optional Die-Cut Clear Window + Wipf® Degassing Valve, delivering KIT Level 12 Grease Resistance (TAPPI T559) · OTR ≤0.65 cc/m²·24h (EVOH Spec) · Soy/Water-Based Ink Option under ISO Class 8 cleanroom lamination.

### What is the minimum order quantity (MOQ) and factory FOB price for FP-KTT-210?

Orders start from 1,000 pcs via HP Indigo 25K digital print ($0 cylinder fee) at $0.165/pc, scaling down to $0.078/pc on 10-color Bobst rotogravure.

### Which filling and packaging lines run FP-KTT-210 smoothly?

Specification FP-KTT-210 is calibrated (145°C–168°C Top Fold-Over Heat Seal (Above Tin-Tie) · Flat SOS Block Bottom Stands Upright Unfilled) for Manual Cafe Scoop Filling, WeighPack Semi-Auto Net Weighers & Automatic SOS Block-Bottom Bagging Lines. Free unprinted trial rolls or pre-made test bags are available for line qualification.

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

Email alex@flexpouchmfg.com or WhatsApp +86 138 2642 4025. 1:1 vector .AI/.PDF dielines and 3-tier FOB quotes arrive within 2 business hours, and free 25-pouch sample kits dispatch in 48 hours via DHL/FedEx.