Long-lasting antifungal zno microstructure additive for food packaging plastics
Aqueous colloidal ZnO microstructure additive validated for food packaging plastics, achieving over 99.9% fungal elimination at low dosages (1000-1500 ppm) without altering material properties. Extends antifungal protection duration by up to 40% and is compatible with FDA-approved components for polymers such as LDPE, HDPE, PP, and PVC.
Overview
This solution is an aqueous colloidal additive based on ZnO microstructures designed to provide long-lasting antifungal protection in food packaging plastics. It enables manufacturers to integrate effective fungal resistance into polymer-based containers and films using only FDA-approved components. Validated against Candida and Aspergillus strains, the additive achieves over 99.9% fungal elimination at low dosages (1000-1500 ppm) while preserving the physicochemical, optical, and mechanical properties of the host material.
The additive extends the duration of antifungal performance by up to 40% compared to conventional approaches, addressing a critical need in food preservation and shelf-life extension. Its versatility allows incorporation into common plastic matrices such as LDPE, HDPE, PP, and PVC through standard processing methods including blown film extrusion.
Technical specifications
- Antifungal mechanism: ZnO microstructures synthesized via chemical methodologies provide broad-spectrum antifungal action validated against Candida and Aspergillus species.
- Effective dosage: Over 99.9% fungal elimination achieved at concentrations of 1000-1500 ppm on plastic surfaces, with masterbatch dosing planned at 0.8-1.0% in final containers.
- Polymer compatibility: Tested and validated in LDPE, HDPE, PP, and PVC, among other polymers, using only FDA-approved formulation components.
- Processing compatibility: Successfully incorporated into blown plastics without modifying physicochemical, optical, or mechanical properties.
- Sustainability profile: Low required dosages avoid introducing significant additional polluting or persistent species into final products.
- Extended protection: Prolongs antifungal effectiveness duration by up to 40% beyond previously used benchmarks.
Technology readiness level
The additive has been validated at laboratory scale, with confirmed antifungal efficacy exceeding 99.9% on plastic surfaces and demonstrated compatibility with multiple polymer matrices. Future validation efforts are focused on pilot-scale manufacturing, including the production of an HDPE/ZnO ME masterbatch (MB) suitable for injection molding processes. This next stage will enable larger production batches, comparative analysis between pristine and modified materials, and optimization of dosage parameters for commercial-scale food container manufacturing.
About INDUSTRIALNANO LTDA.
Industrialnano LTDA is a Chilean company specialized in the industrial-scale development and manufacturing of advanced chemical additives at nano and micrometric scales. Its core technology is Cu-9 Schultz, a proprietary aqueous solution of metallic copper nanoparticles measuring 7.5 nanometers. By integrating these particles into industrial matrices—such as textiles, paints, sanitizers, and cosmetics—the company provides long-term antimicrobial, antifungal, and antiviral protection. The firm leverages specialized electron microscopy and international standards like ISO and ASTM to ensure the efficacy and stability of its nanotechnological solutions.
These innovations are critical for clients seeking to enhance product performance, safety, and hygiene across sectors including healthcare, construction, food processing, and retail. By transforming standard materials into smart, protective surfaces, Industrialnano enables the creation of products like reusable, virus-eliminating masks and textiles that maintain efficacy through multiple washes. As part of the Schultz Holding group, the company combines over 40 years of industrial experience with modern applied science to serve both national and international markets, acting as a strategic partner for businesses focused on efficiency, sustainability, and technological innovation.
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