Can Liquid Sachets Be Fully Compostable? The 2026 Answer

Fully compostable liquid sachets are small-volume liquid packages built on cellulose film that break down completely in both industrial and household composting. They pack ketchup, mustard, cooking sauces, and hand cream, and in February 2026 this format reached the market as a commercial solution.

Why Three-Layer Composite Liquid Sachets Are Nearly Impossible to Recycle

Approximately 855 billion sachets are used worldwide every year to package ketchup, mustard, cooking sauces, and hand cream, and in 2018 alone the world used roughly 855 billion pouches. Most small sachets use a three-layer composite structure of polyolefins, aluminum foil, and polyester, which are nearly impossible to separate and recycle within existing recycling systems; the tiny size of these sachets and their food residues make recycling even harder, so they often end up in the environment as a major source of microplastic pollution.

How Cellulose Film Achieves Full Biodegradability

In February 2026, compostable film manufacturer Futamura, flexible packaging processor Repaq, and machinery manufacturer GK Sondermaschinenbau jointly announced a fully biodegradable and compostable liquid pouch solution based on NatureFlex™ technology. The core innovation of this solution lies in material selection: the new compostable composite consists of a barrier cellulose film from Futamura plus a bio-based film layer for an airtight seal, and it holds dual certification for both industrial and home composting.

Performance Data of Fully Compostable Liquid Sachets

This fully compostable liquid packaging reaches an oxygen transmission rate as low as 0.5 under standard conditions (23°C, 50% relative humidity) and supports a shelf life of up to 12 months. Its key specifications 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 compared with conventional structures, repeatedly validated on small, medium, and large GK Sondermaschinenbau machines
• R&D timeline: two years of collaborative development

Growth Trend of the Bio-Based Materials Market

According to industry statistics, the global bio-based materials market is expanding rapidly at a compound annual growth rate (CAGR) of 22% and is projected to reach $57.83 billion by 2026. The bio-based pouch materials market is projected to grow from $735 million in 2025 to approximately $1.256 billion by 2035, at a CAGR of 5.5%, driven primarily by the food industry's demand for sustainable packaging.

What Fully Compostable Liquid Sachets Mean for Flexible Packaging

Liquid pouches have long been regarded as one of the most difficult packaging types to recycle, and the fully compostable solution matters not only as a technical breakthrough but also because it charts a new course for the whole flexible packaging industry: instead of relying on the perfection of recycling systems, it designs for a material's end-of-life from 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, and Futamura's Regional Sales Manager pointed out that this home-compostable liquid pouch packaging truly meets market demand for comprehensive sustainable packaging solutions in both the food and non-food sectors.

Q: Can liquid sachets really break down completely?

A: Yes, they can break down completely. Fully compostable liquid sachets built on cellulose film hold dual certification for both industrial and home composting, so consumers achieve complete degradation whether they dispose of the sachet in an industrial composting facility or in a home compost bin.

Q: Do compostable liquid sachets require new packaging equipment?

A: No major changes are needed. According to GK Sondermaschinenbau, this compostable structure required virtually no adjustments to existing equipment during testing, and its production efficiency shows no difference from conventional structures, validated on small, medium, and large machines.

Q: Which products suit fully compostable liquid sachets?

A: Fully compostable liquid sachets suit small-volume liquid products such as ketchup, mustard, cooking sauces, and hand cream. At 23°C and 50% relative humidity, this 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 such as liquid sachets and can connect brands with this compostable packaging solution.