Heavy-Duty Kraft Mailers with Secure Self-Locking

The Design Concept: Robust Protection in a Sustainable Form

In a logistics landscape shifting away from plastics, our heavy-duty kraft mailer offers a high-strength alternative that doesn't sacrifice security. Designed for professional brands, this envelope features a natural fiber texture that conveys premium reliability the moment it reaches the customer’s hands. It is the perfect balance of utilitarian toughness and eco-conscious sophistication, ensuring your products arrive in pristine condition.

Technical Engineering & Material Integrity

Constructed from ultra-dense 350GSM virgin kraft paperboard, these mailers provide exceptional puncture resistance and side-seam strength. The precision-engineered tab-locking system creates a mechanical bond that eliminates the need for plastic tapes, capable of resisting a pull-force of up to 85N (approx. 8.6kg). Each mailer is finished with reinforced pressure-creased edges, ensuring the envelope maintains its structured shape even when packed to capacity. This is a professional-grade solution for high-end apparel, electronics, and heavy documents.

Global Compliance & Green Logistics

Starmi's commitment to the environment is backed by rigorous standards. Our mailers are 100% recyclable and crafted from FSC-certified sustainable pulp. Fully compliant with EUDR (EU Deforestation Regulation), they provide global wholesalers with a compliant, plastic-free packaging solution that reduces carbon footprints without compromising on-road performance.

★  Design Style:Industrial Professional / Eco-Minimalism

★  Key Feature:Reinforced Tab-Lock Mechanism & 350GSM High-Density Board

★  Processing:High-Pressure Creasing & Precision Mechanical Die-Cutting

★  Compliance:FSC Certified, Plastic-Free, EUDR Compliant