GB/T 41008-2021 in English
VALIDBiodegradable drinking straws
- Issued on:2021-11-26
- Implemented on:2022-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
《GB/T 41008-2021生物降解饮用吸管》由TC380（全国生物基材料及降解制品标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Interpretation of the core content of the standard
GB/T41008-2021 is my country's first national standard specifically formulated for biodegradable drinking straws, which stipulates the technical requirements for the entire life cycle of straws with biodegradable materials such as polylactic acid (PLA) and polybutylene succinate (PBS) as the main raw materials.
Comparison of key technical indicators
| Indicator category | Traditional plastic straws | Biodegradable straw requirements | Test method |
|---|---|---|---|
| Biodegradation rate | Not required | ≥90%(composting conditions) | GB/T19277.1 |
| Heavy metal limit | GB 4806.7 | Arsenic≤1mg/kg Lead≤0.5mg/kg | GB/T15337 |
| Dimensional deviation | ±5% | ±2%(length) ±4%(outer diameter) | 7.2.1/7.2.2 |
Degradation performance grading system
The standard innovatively establishes degradation requirements for multiple environmental scenarios:
- Industrial composting: must meet the requirements of biological decomposition rate, disintegration rate (≥90%) and ecotoxicity at the same time
- Household composting: disintegration test cycle extended to 12 months
- Marine environment: refer to GB/T40612 to determine carbon dioxide release
Typical case: Under composting conditions at 58°C, the biodegradation rate of a PLA straw reached 92.3% in 180 days, and the survival rate in the earthworm toxicity test was 100%.
Implementation difficulties and solutions
Raw material control
The standard requires that raw materials must be certified for food contact materials. It is recommended that companies:
- Establish a resin supplier file and request FDA/GB 4806.7 dual certification documents
- Test the ash content of each batch (≤0.1%)
Process optimization
For the common problem of uneven wall thickness:
- Extrusion temperature is controlled at 170-190℃ (PLA material)
- Use a laser diameter gauge to monitor the tube diameter in real time
Standard evolution analysis
The main differences between this standard and international standards such as EN13432:2000 and ASTM D6400 are:
- Newly added marine degradation test path
- Clearly defined limits for 12 heavy metals, stricter than EU REACH regulations
- Unique Chinese-style indicators such as spoon-shaped straw expansion rate (≥65%)
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