High-transparency PLA packaging bags are bio-based, compostable, and fully transparent packaging bags made from plant-based materials such as corn and cassava. They offer clarity comparable to OPP/PP plastic, yet can fully decompose into carbon dioxide and water within 180 days under compost conditions — leaving no microplastics behind.

They are not ordinary PE bags — they are clearer and free from cloudiness. They are not OPP/PP bags — they are compostable and free from petroleum-based materials. They are not starch-based degradable bags — they win decisively on transparency, with no frosted appearance. "See the product clearly, do right by the Earth" — the perfect balance of high transparency and full biodegradability.

Core Features

Crystal Clear Like Glass: Light transmittance up to 94%, haze as low as 1.5%, products are displayed with clarity.

Plant-Based, Not Petroleum-Based: Sourced from renewable plants such as corn and cassava,告别化石燃料依赖.

Fully Compostable, Zero Microplastics: Decomposes completely within 180 days under industrial composting conditions, meeting EN13432/ASTM D6400 standards.

Heat-Sealable Directly: No adhesive coating required, with stable heat-seal strength (2.8–5.0 N/15mm for double-sided heat sealing).

Excellent Printability: High surface gloss at 85%, suitable for water-based ink printing, supporting brand customization.

Food-Grade Safe: Non-toxic and odorless, suitable for direct food contact, ideal for premium consumer packaging.

Material Specifications

Light transmittance exceeds 94%, haze ranges from 1.5% to 10%, thickness spans 15–100μm, tensile strength reaches 120–125MPa, and elongation at break is 115–125%. Heat-seal strength is 2.8–5.0 N/15mm, processing temperature is 170–230°C, and complete biodegradation occurs within 180 days under industrial composting conditions (50–60°C).

High-Transparency PLA Bags vs. Other Materials

Ordinary PE bags have poor transparency with a cloudy appearance. OPP/PP bags offer high transparency but are non-compostable. Starch-based degradable bags have a frosted look. High-transparency PLA bags match OPP/PP in clarity while being fully compostable, with strength comparable to OPP/PP and stable heat-seal performance. In summary, high-transparency PLA bags are the optimal solution for replacing traditional high-transparency plastic packaging.

Core Advantages

Advantage 1: Display-Grade High Transparency
With light transmittance above 94% and haze as low as 1.5%, the bag is almost invisible when looking at the product through it. For products that rely on visual appeal — such as 3C accessories, cosmetics, and premium food items — this feature is critical. Consumers can see product details at first glance, boosting purchase conversion rates.

Advantage 2: Environmental Compliance
Meeting international certifications such as EN13432 and ASTM D6400, these bags comply with environmental regulations including the EU SUP Directive and China's plastic restrictions. Compared to traditional PE bags, they can reduce carbon emissions by approximately 70%. They can be printed with "100% Biodegradable" labels, conveying a green brand philosophy and supporting exports and ESG goals.

Advantage 3: Reliable Performance
Tensile strength of 120–125MPa and elongation at break of 115–125% meet daily packaging strength requirements. Double-sided heat-seal strength reaches 2.8–5.0 N/15mm, ensuring secure seals that will not burst. Modified formulations offer low-temperature resistance for cold chain logistics, and custom antistatic options are available for electronic products.

Advantage 4: Easy Processing
With a processing temperature of 170–230°C, these bags are highly compatible with existing PE/PP bag-making equipment, requiring no equipment replacement. They support rotogravure and water-based ink printing for seamless brand customization.

Important Considerations

High-transparency PLA bags are not perfect — transparently communicating limitations builds trust with professional customers.

Limited Temperature Resistance: The glass transition temperature of standard PLA is approximately 55–65°C. Prolonged exposure to temperatures above 50°C is not recommended.

Requires Industrial Composting: Complete decomposition requires industrial composting conditions with sustained temperatures of 50–60°C and high humidity. Home composting requires specialized certification.

Moderate Barrier Properties: Moisture and oxygen barrier performance is inferior to aluminum foil composite films. Not suitable for foods requiring extremely high freshness preservation, such as coffee beans over long-term storage.

Avoid Direct Sunlight: Prolonged UV exposure accelerates degradation. Store in a cool, dry place.

Application Scenarios

High-transparency PLA bags are ideal for 3C accessories (data cables, chargers, phone cases, earphones, screen protectors) with clear product display and dust protection. They are perfect for cosmetics (face masks, makeup sets, travel sizes) with food-grade safety and attractive presentation. Suitable for premium foods (tea, chocolate, coffee beans, candies) — non-toxic, odorless, and compliant with food contact safety standards. Also applicable for clothing accessories, electronic components, and gift packaging.

Certifications & Testing

Products are certified or certifiable under EN13432 (EU Compostable Packaging Standard), ASTM D6400 (US Compostable Plastics Standard), OK compost Industrial, China's Double-J Biodegradable Mark, GB/T 38082 (China Biodegradable Plastic Shopping Bag Standard), and Food Contact Safety Test Reports.

Customization Options

Sizes can be customized from 5cm to 100cm in width. Thickness ranges from 15–100μm. Bag styles include flat bags, self-adhesive bags, vest bags, zipper bags, and custom-shaped bags. Branding with logos, patterns, and text is available via water-based ink or rotogravure printing. Closure options include heat sealing, self-adhesive strips, or zippers. Functional upgrades include antistatic, UV-resistant, reinforced load-bearing, and ventilation holes.