Compostable Kraft Window Tea Box with PLA Film — Organic Loose Leaf Packaging

Product Overview

Bincai’s compostable kraft window tea box is engineered for the zero-waste supply chain. Every component — from the 350gsm FSC-certified kraft paperboard to the PLA window film derived from corn starch — biodegrades in commercial composting facilities. Printed with soy-based inks and assembled with water-based adhesives, this box meets EN 13432 compostability standards while delivering the shelf presence organic tea brands demand. Manufactured on KBA 1050 4-color offset presses in our 18,000 sqm Foshan facility. 23 years of sustainable packaging expertise.

Manufacturing Specifications

• Press: KBA 1050 4-color offset — soy-based CMYK printing on kraft substrate
• Board: 350gsm FSC-certified kraft paperboard, natural brown finish
• Window: 30-micron PLA film (corn starch-based), crystal-clear transparency
• Adhesives: Water-based PVA, solvent-free, compostable-compatible
• Inks: Soy-based vegetable inks, heavy metal-free, EN 13432 compliant
• Insert: Recyclable cardboard partition for tea bag or loose leaf compartments
• Daily Output: 1.7 million color boxes (post-2025 smart factory expansion)
• Certifications: ISO 9001:2015, FSC Chain-of-Custody, EN 13432 Compostable

Customization Options

Industry Applications

Production Quality

Sustainability

Why Choose Bincai

Guangdong Bincai Color Printing Co., Ltd. brings 23 years of packaging expertise to the sustainable frontier. Our 18,000 sqm dual-factory in Foshan (10,000 sqm + 8,000 sqm Gaobu smart facility) operates KBA 1050 4-color offset presses that print soy-based inks on kraft substrates with the same precision as conventional CMYK jobs — no compromise on brand colors or registration. We hold FSC Chain-of-Custody certification across our entire supply chain, and our EN 13432 compostability validation covers the full box assembly, not just individual components. From our in-house die-making workshop (24h die-line turnaround) to our automated window-patching lines that achieve ±0.5mm PLA film placement, every process is engineered for sustainable consistency. With 1.7M daily box output and pre-production samples in 5–7 days, Bincai scales from artisan tea startups to multinational organic brands without missing a delivery window.

Factory Facts: Founded 2003 | 23 years | 18,000 sqm (10,000+8,000 smart factory) | 1.7M boxes/day | KBA 1050 4-color | Heidelberg 7+1 UV | ISO 9001 & FSC | EN 13432 Compostable | Foshan, Guangdong, China

FAQ

Q: Is the PLA window truly compostable? A: Yes — our 30-micron PLA film is derived from corn starch and certified compostable under EN 13432, achieving ≥90% biodegradation within 180 days in industrial composting conditions. Unlike petroleum-based PET windows, PLA breaks down into water, CO₂, and biomass.

Q: Can I get pre-production samples before committing to a large order? A: Absolutely. We provide 5–7 day pre-production samples at no charge for standard configurations. Custom window die-cut tooling may add 3–5 days for sample preparation. Samples include full print, PLA window, and insert — exactly as production units.

Q: What’s the minimum order quantity? A: MOQ 1,000 units for standard sizes with existing window dies. For custom window shapes requiring new die-cut tooling, MOQ increases to 3,000 units. Trial orders of 500 units can be accommodated for simple configurations.

Q: Can you match my brand’s kraft shade? A: Yes — we offer natural brown kraft (standard), bleached white kraft, grey kraft, and custom-dyed kraft to match your brand palette. Print color matching uses X-Rite spectrophotometer with ΔE ≤3.0 tolerance.

Q: How does soy-based ink perform on kraft paper? A: Soy-based inks deliver excellent color saturation on kraft substrates, with strong rub resistance (≥100 Sutherland double rubs at 4-lb). Because kraft is naturally absorbent, we apply a water-based matte coating to lock in color and prevent scuffing during transit.

Q: What certifications do you hold for sustainable packaging? A: ISO 9001:2015 (quality management), FSC Chain-of-Custody (SCS-COC-008473), and EN 13432 (compostability). We can also arrange ASTM D6400 and OK Compost certification upon request.