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Sustainable-Developmente2y

Sustainable Development

Sustainable Material - Polylactic Acid (PLA)

Polylactic acid (PLA) is a bioplastic made from renewable resources such as corn starch or sugarcane. Through a fermentation process, these raw materials are converted into lactic acid, which is then polymerized into polylactic acid. This material is highly regarded for its biodegradability and environmentally friendly properties.

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How Polylactic Acid (PLA) Promotes Environmental Friendliness:

Polylactic acid has two main characteristics: its source is bio-based, and secondly, it is biodegradable.

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    Carbon Emission Reduction

    Polylactic acid (PLA) is derived from renewable plants (e.g., corn, sugarcane). Compared to conventional plastics, its lifecycle carbon emissions are significantly lower, contributing to climate change mitigation.
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    Resource Circularity

    PLA exhibits excellent biodegradability, capable of rapidly decomposing into water and carbon dioxide under suitable conditions. This accelerates natural cycling and reduces plastic waste accumulation.
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    Reduced Petroleum Dependence

    As a non-petroleum-based material, PLA's widespread application helps decrease reliance on fossil fuels, promotes energy structure diversification, and advances sustainable development.
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    Biocompatibility

    In the medical field, PLA's biosafety and biocompatibility enable its use in producing degradable medical supplies (e.g., sutures, bone screws), reducing secondary surgeries and medical waste while enhancing patient safety.

APPLICATION AREAS

BIOMEDICAL
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Biomedical Materials

Short Description:

Polylactic acid (PLA) exhibits excellent biocompatibility. Its degradation products are metabolized and excreted harmlessly from the body without toxicity or side effects, making it widely applicable in medical fields such as drug delivery, surgical procedures, orthopedics, tissue engineering, and cosmetic medicine.
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3D Printing

Short Description:

As an additive manufacturing technology, 3D printing offers significant low-carbon advantages by reducing energy consumption during production and maximizing material utilization while minimizing waste. PLA is one of the most commonly used 3D printing materials due to its ease of use, non-toxicity, and environmental friendliness, with applications spanning prototype development, art and crafts, household items, education/research, and medical uses.

In the 3D printing sector, eSUN promotes sustainable development through innovations like reducing plastic spool usage and recycling scrap materials, while actively developing PLA alternatives to replace conventional polymers. These measures optimize production processes and advance green 3D printing technologies, contributing to environmental protection and sustainable development.
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PLA Fiber

Short Description:

PLA fibers, derived from plant starch, feature natural antibacterial properties, mite resistance, moisture-wicking, UV protection, and low flammability. These characteristics enable broad applications in apparel textiles, decorative fabrics, home furnishings, and medical supplies. The fibers completely degrade into water and CO₂ in soil and burn without pollution, aligning with circular economy principles.
ESG-可持续-制品
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Disposable Degradable Products

Short Description:

Addressing environmental pollution, biodegradable plastics like PLA have become crucial alternatives to conventional plastics. With high transparency, superior performance, and compostability, PLA is extensively used in food packaging, consumer goods packaging, and electronic product packaging, while also meeting diverse needs in medical, agricultural, and industrial sectors.

Chemical Recycling

Polylactic acid (PLA) chemical recycling is an efficient resource circulation method that converts waste PLA materials back into original monomers or other chemicals. This process not only reduces plastic waste accumulation but also promotes resource reuse, supporting the development of a green low-carbon economy.

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Environmental Significance

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    Carbon Reduction

    PLA chemical recycling employs a closed-loop approach to enhance resource efficiency, reducing demand for virgin materials while significantly cutting carbon emissions and mitigating the ecological impact of plastic waste.
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    Eco-Friendliness

    Compared to mechanical recycling, chemical recycling consumes less energy and maintains environmentally benign processes. It avoids harmful byproducts generated from high-temperature melting, while its derivatives (e.g., lactate esters) exhibit excellent biodegradability and low toxicity.
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    Circularity

    Aligned with circular economy principles, this method enables PLA to circulate within closed-loop systems, improving resource utilization efficiency, minimizing environmental pollution, and achieving sustainable resource management.

Environmental Achievements

Promotion of PLA Printing Consumables

Replacing 100,000 kilograms of filament from ABS to PLA can reduce greenhouse gas emissions, equivalent to the carbon emissions from a fuel-powered vehicle driving 1,084,700 kilometers.

Use of eSpool+ Reusable Spools

Producing one traditional spool generates 0.157kg of carbon emissions and consumes 0.2 kWh of electricity. By reducing the production of traditional spools annually, it can reduce approximately 11,304,000KG of carbon emissions and save 14,400,000 kWh of electricity.

Contribution of Chemical Recycling

At the Xiaogan, Hubei production base, eSUN has achieved nearly 2,000 tons of PLA chemical recycling, effectively promoting the circular and efficient utilization of PLA.