Designing for End-of-Life: Fully Compostable Liquid Sachets Reach Commercial Stage in 2026

Fully compostable liquid sachets use cellulose film as their substrate and are made for small-volume liquids. They degrade completely in both industrial and household composting, and can hold products such as ketchup, mustard, cooking sauces and hand cream. In 2026, this packaging format achieved its first commercial launch.

Why Three-Layer Composite Liquid Sachets Remain a Recycling Challenge

Roughly 855 billion sachets are used worldwide each year to pack ketchup, mustard, cooking sauces and hand cream; in 2018 alone, about 855 billion pouches were consumed globally. Most sachets rely on a three-layer composite that combines polyolefins, aluminum foil and polyester—materials that are incompatible with one another and almost impossible to separate and recycle through existing systems. Their small format and frequent food residue make recovery even harder, turning them into a significant source of microplastic pollution.

How Cellulose Film Delivers Full Biodegradability

In February 2026, compostable film manufacturer Futamura, flexible packaging converter Repaq and machinery maker GK Sondermaschinenbau jointly announced a fully biodegradable, compostable liquid pouch solution built on NatureFlex™ technology. The breakthrough lies in material selection: the new compostable composite pairs Futamura's barrier cellulose film with a bio-based film layer for seal integrity, and it carries dual certification for industrial and home composting.

Performance Data for Fully Compostable Liquid Sachets

Under standard conditions (23°C, 50% relative humidity), this fully compostable liquid packaging can reach an oxygen transmission rate as low as 0.5 and support a shelf life of up to 12 months. Its key metrics are as follows:

• Test conditions: 23°C, 50% relative humidity
• Oxygen transmission rate: as low as 0.5
• Shelf life: up to 12 months
• Production efficiency: no difference from conventional structures, repeatedly validated on small, medium and large GK Sondermaschinenbau machines
• Development timeline: two years of joint R&D

Bio-Based Materials Market Keeps Expanding

Industry data show the global bio-based materials market is growing at a compound annual growth rate (CAGR) of 22% and is expected to reach $57.83 billion by 2026. The bio-based pouch materials market is projected to rise from $735 million in 2025 to approximately $1.256 billion by 2035, a CAGR of 5.5%, driven mainly by food-industry demand for sustainable packaging.

What This Means for Flexible Packaging

Liquid pouches have long been considered one of the hardest packaging types to recycle. The fully compostable option matters not only as a technical advance but also as a new direction for flexible packaging: rather than waiting for recycling systems to improve, it designs for a material's end-of-life at the source. The first commercial pouches using this compostable structure are about to enter the market. GK Sondermaschinenbau's Sales Director said the solution required virtually no adjustments to existing equipment during testing, while Futamura's Regional Sales Manager noted that this home-compostable liquid pouch packaging truly meets demand for comprehensive sustainable packaging across food and non-food applications.

Q: Can liquid sachets really break down completely?

A: Yes. Fully compostable liquid sachets based on cellulose film hold dual certification for industrial and home composting, so complete degradation occurs whether consumers send them to an industrial composting facility or place them in a home compost bin.

Q: Do compostable liquid sachets require new packaging equipment?

A: No major changes are needed. According to GK Sondermaschinenbau, the compostable structure required virtually no adjustments to existing equipment during testing, and production efficiency matches conventional structures, with validation on small, medium and large machines.

Q: Which products are suitable for fully compostable liquid sachets?

A: They suit small-volume liquid products such as ketchup, mustard, cooking sauces and hand cream. At 23°C and 50% relative humidity, the packaging reaches an oxygen transmission rate as low as 0.5 and supports a shelf life of up to 12 months. Guangdong Kody Packaging Products Co.,Ltd. (Dongguan Kody Plastic Products Co.,Ltd.) manufactures and exports flexible packaging including liquid sachets and can help brands connect with this compostable packaging solution.