As environmental awareness grows, the pollution caused by traditional plastic packaging has drawn increasing attention. PLA compostable heat seal film, as a bio-based packaging material, is gradually becoming an eco-friendly alternative in food, daily chemical, and agricultural sectors. PLA (polylactic acid) is derived from renewable resources such as corn starch through fermentation and polymerization. Under industrial composting conditions, it fully degrades into carbon dioxide and water, leaving minimal environmental burden.

PLA heat seal film is typically produced through multi-layer co-extrusion or biaxial orientation. It features high transparency, good gloss, and stable heat seal strength. Its heat seal temperature window is relatively wide, generally between 90–130°C, compatible with high-speed automatic packaging lines. Compared with conventional PE or PP films, PLA film maintains good mechanical properties while offering excellent anti-fog and breathability, making it particularly suitable for fresh produce, bread, pastries, and other food items that require respiration.

In terms of food contact safety, PLA heat seal film complies with international standards such as FDA 21 CFR and EU 10/2011, and can be safely used for direct food contact packaging. Common applications include bread bags, pastry box window lamination, fruit and vegetable bags, and milk tea cup sealing films. In addition, PLA film can be used for paperboard windows, stationery packaging, and flower wrapping, helping brands convey a green and sustainable image.

Typical parameters of PLA heat seal film: thickness 15–40μm, customizable width, tensile strength ≥45MPa, light transmittance ≥90%, haze ≤2%, and moderate water vapor transmission rate. The product can be certified to EN 13432 or ASTM D6400 for industrial composting, meeting environmental requirements in different markets.

As a source manufacturer, we offer customized PLA heat seal film services, including thickness, width, color, and printing. Regular specifications are kept in stock, supporting small trial orders and long-term supply. Contact us for samples and quotations to advance sustainable packaging together.