Exterior protection
A high-strength outer layer absorbs abrasion, puncture, scratch, tear, and flex-cracking stress before structural damage can reach the inner barrier system.
Ultra-low oxygen freshness-locking solution
Redefining the standard for coffee preservation.
Graintact is a multilayer barrier platform engineered around a target oxygen transmission rate below 0.4 cc/m2/day, helping producers, exporters, roasters, labs, and coffee brands protect quality from sample to shipment.
Oxygen permeation is the invisible pressure on specialty coffee. The right barrier slows the exchange before flavor potential is lost.
Engineered beyond hermetic
Hermeticity changed coffee. Now the barrier itself needs protection.
Modern coffee travels farther, through longer supply chains and tougher handling conditions. Graintact is built for that reality: a structural barrier architecture designed to protect coffee from oxygen, moisture, and the mechanical stress that can weaken ordinary packaging.
The evolution of hermetic protection
The next generation of packaging must do more than create a sealed environment.
For decades, hermetic packaging transformed the way the coffee industry protects green coffee. By isolating coffee from oxygen and moisture, it established the benchmark for long-term preservation during storage and transportation.
Coffee travels farther.
Supply chains are longer.
Handling is more demanding.
Quality expectations are higher than ever.
Graintact builds on hermetic protection with a twelve-layer engineered system where every material performs a dedicated function inside one integrated architecture.
Engineered Beyond Hermetic.
Each layer performs a specific task. Together, they function as one structural barrier system between the coffee and the outside world.
Engineering the barrier, not just the bag
Most flexible packaging is designed by selecting materials. Graintact was designed by engineering functions.
Mechanical support
Multiple polyethylene layers distribute mechanical stress throughout the package, helping prevent localized failures during transportation, warehousing, and handling.
Barrier core
An advanced EVOH oxygen barrier is encapsulated between specialized tie layers, delivering resistance to oxygen transmission while staying mechanically protected.
Food-contact closure
The inner sealing layer creates a robust, food-safe hermetic closure designed for demanding commercial environments and leak-resistant coffee protection.
A new standard in coffee protection
Preserving coffee quality is no longer just about sealing a bag. It is about engineering every layer between the coffee and the outside world.
Twelve-layer architecture
Every material performs a dedicated task inside one integrated protection system.
Protected barrier core
EVOH oxygen protection is supported by bonding and structural layers, not left to perform alone.
Supply-chain durability
The structure is designed around abrasion, puncture, flex-cracking, and transport stress.
Engineered beyond hermetic
Graintact builds on hermeticity with a structural barrier architecture for modern coffee logistics.
Performance narrative
Slower gas exchange means longer-lasting freshness potential.
35
cc/m2/day benchmark
The deck uses 35 cc/m2/day as a reference point for conventional or competing packaging oxygen transmission.
0.4
cc/m2/day Graintact target
Graintact is positioned as an ultra-low oxygen barrier platform for coffee preservation.
87x
comparison advantage
Graintact is designed to slow oxygen transfer dramatically, helping preserve aroma, color, and cup quality for longer than conventional barrier packaging.
Features
The liner you know now has a challenger.
Graintact is built for coffee teams who want measurable barrier performance, cleaner brand flexibility, and a preservation story that goes beyond familiar storage habits.
Built for teams who have outgrown legacy liners.
Targets ultra-low oxygen transfer below 0.4 cc/m2/day.
Twelve-layer structural barrier architecture engineered for long storage windows.
Options for light-sensitive lots and opaque packaging systems.
Made for coffee, cacao, seeds, and specialty grain workflows.
Designed for food-contact packaging programs and export handling.
Closure logic for sample rooms, warehouses, and shipment prep.
Helps reduce exposure conditions linked to mold and infestation risk.
Protects sensory quality: aroma, color, and cup expression.
Supports green coffee vitality before roasting begins.
Product families
One barrier platform. Multiple coffee workflows.
Graintact is built for the practical points where coffee quality can be lost: sample exchange, lab storage, pre-shipment review, warehouse handling, export, and brand commercialization.
Sample bags
For cupping labs, exporters, producers, traders, roasters, and sample rooms where small quantities must arrive tasting like the lot they represent.
0.2130 x 170 mm200 g
0.5150 x 245 mm500 g
0.5 Pro180 x 267 mm800 g
1.0180 x 302 mm1000 g
Green coffee storage
Larger preservation formats for coffee lots that need protection during consolidation, handling, transport, and storage before roasting begins.
MStorage bag reference65 x 110 cm
LStorage bag reference75 x 130 cm
Private-label systems
For coffee brands that want to commercialize preservation technology under their own packaging story, from samples to consumer-facing concepts.
B2BBrand formatsCustom
OEMMaterial platformScalable
Sample bag size references
Sample protection, sized for every exchange.
Graintact sample bags help keep small lots representative from origin to cupping table. Available in 0.2, 0.5, and 1.0 formats, they protect green coffee samples during evaluation, approval, and shipment.
Graintact 0.2
130 x 170 mm. Designed for 200 g green coffee samples.
Graintact 0.5
150 x 245 mm. Designed for 500 g green coffee samples.
Graintact 1.0
180 x 302 mm. Designed for 1000 g green coffee samples.
Featured product platform
VitraLock brings Graintact preservation into single-dose specialty coffee.
VitraLock is Graintact's exclusive single-dose packaging concept for nitrogen-flushed coffee sachets using SiOx transparent barrier technology. It brings the same preservation thinking into a ready-to-launch consumer format for specialty coffee brands.
Manufacturing proof
Designed for coffee. Produced with industrial discipline.
Every Graintact package starts with multilayer film engineered for consistency, then moves through controlled bag-making processes built for repeatable quality. The result is a preservation platform coffee businesses can specify, scale, and trust.
Handling logic
Simple to use, serious about protection.
Graintact is made for everyday coffee operations: fill the bag, reduce excess air, seal it correctly, label the lot, and store it away from unnecessary heat, moisture, and puncture risk. Simple handling helps the barrier do its job.
1
Place and fillInsert the barrier bag into the outer format, then add green coffee.2
Remove excess airPress down and leave enough film for a proper closure.3
Seal the formatTwist, fold, zip, heat seal, or close according to the selected product.4
Label and storeKeep traceability clear and avoid unnecessary heat, moisture, and puncture risk.
Keep your grain intact
Build your coffee preservation system with Graintact.
From sample bags to branded preservation platforms, Graintact helps coffee businesses protect quality before roasting begins.