Product Overview
Bincai’s reverse tuck end (RTE) folding carton is purpose-built for organic and premium tea brands that demand packaging as pure as their product. Constructed from 350gsm SBS C1S solid bleached sulfate board — renowned for its bright white surface and exceptional print fidelity — the carton features matte lamination with selective spot UV accents that catch light on shelf. The reverse tuck end closure provides secure retention without adhesives, while the interior food-grade aqueous coating ensures product safety without chemical migration. An optional window patch using PLA compostable film (certified to EN 13432) transforms the carton into a fully compostable package. Printed on KBA 1050 and Heidelberg 7+1 UV presses in our ISO 15378 GMP-certified facility — the pharmaceutical-grade standard that guarantees the highest level of cleanliness and contamination control for food-contact packaging.
Manufacturing Specifications
- Board: 350gsm SBS C1S (Solid Bleached Sulfate, Clay 1 Side) — bright white, smooth, high print fidelity
- Style: Reverse Tuck End (RTE) — top and bottom tuck flaps fold in opposite directions for secure closure
- Surface Finish: Matte lamination (exterior) + selective spot UV gloss accents on brand elements
- Interior Coating: Food-grade aqueous coating — non-toxic, odor-free, no chemical migration
- Window (optional): Die-cut aperture with ultrasonically welded PLA compostable film (EN 13432 certified)
- Print: CMYK offset on KBA 1050 4-color press + Heidelberg 7+1 UV for spot colors and specialty coatings
- Size Range: 50×50×30mm (sample/single-serve) to 300×200×80mm (gift set)
- Factory: 18,000 sqm ISO 15378 GMP-certified facility, Foshan, Guangdong
- Daily Output: 1.7 million folding cartons (post-2025 expansion)
- Certifications: ISO 9001:2015, FSC Chain-of-Custody, ISO 15378 GMP (pharmaceutical-grade clean manufacturing)
Customization Options
| Option | Available Choices |
|---|
| Board Grade | 350gsm SBS C1S (standard), 300-400gsm range, recycled SBS, kraft back |
| Carton Style | Reverse tuck end (standard), straight tuck, auto-lock bottom, seal end |
| Surface Finish | Matte lamination (standard), gloss lamination, soft-touch, spot UV, embossing |
| Interior Coating | Aqueous (standard), PE extrusion, wax coating, or uncoated |
| Window | None, rectangular, oval, custom shape; PET or PLA compostable film |
| Add-ons | QR code print, tear strip, hang tab, tamper-evident seal, Braille embossing |
| MOQ | 1,000 units (standard), 3,000+ (custom die-cut + multi-finish) |
Applications
| Industry | Application | Packaging Requirement |
|---|
| Organic Tea | Loose leaf, tea bag sachets, pyramid bags | Food-grade, aroma barrier, organic aesthetic |
| Specialty Coffee | Whole bean, ground coffee, drip bags | One-way valve option, matte premium finish |
| Health Supplements | Herbal blends, wellness powders | ISO 15378 GMP, contamination-free |
| Gourmet Food | Chocolate, confectionery, dried fruit | Food-safe interior, shelf appeal |
| Eco-Retail | Zero-waste stores, refill concepts | PLA window, FSC board, fully compostable |
Why Choose Bincai
| Strength | Detail |
|---|
| 22 Years Experience | Manufacturing premium packaging since 2003, serving 60+ countries |
| ISO 15378 GMP | Pharmaceutical-grade clean manufacturing — the highest standard for food-contact packaging |
| Advanced Presses | KBA 1050 4-color offset + Heidelberg 7+1 UV for vibrant, precise printing |
| Massive Capacity | 18,000 sqm integrated factory; 1.7M folding cartons + 220,000+ rigid boxes daily |
| Free Samples | 5-7 day pre-production samples at no cost; OEM/ODM fully supported |
Quality Assurance
| QA Gate | Check |
|---|
| Incoming Material | Board caliper (±0.02mm), brightness (≥90% ISO), GSM verification, GMP compliance |
| Pre-Press | Digital color proof (ΔE<2.0), die-line accuracy, plate registration test |
| In-Process | Color density monitoring, glue-free construction integrity, crease quality, window weld test |
| Post-Production | AQL 1.5 sampling (GMP standard), drop test, rub test, odor test, barcode scan |
| Final QC | Visual inspection under D65 lighting, dimensional check, food-contact migration test |
| Shipping | Palletization audit, container loading supervision |
FAQ
Q: What makes ISO 15378 GMP different?
A: ISO 15378 applies pharmaceutical Good Manufacturing Practices to packaging — including cleanroom protocols, contamination control, traceability, and batch documentation. Essential for food-contact packaging that demands medical-grade cleanliness.
Q: Is the PLA window truly compostable?
A: Yes. Our PLA film is certified to EN 13432 (industrial composting) and TÜV OK Compost HOME (home composting). It breaks down within 12 weeks in industrial facilities.
Q: Can I use recycled board?
A: Yes, we offer FSC recycled SBS board with up to 100% post-consumer content. Note that recycled board has slightly lower brightness (~85% ISO vs 92% for virgin).
Q: What is the minimum order for custom die-cut shapes?
A: Custom die-cut cartons start at 3,000 units due to the die-making cost. Standard RTE with custom print starts at 1,000 units.
Q: How do you ensure food safety?
A: All food-contact cartons are produced in our ISO 15378 GMP zone with dedicated equipment, regular migration testing, and full batch traceability documentation.
Q: Do you offer design services?
A: Yes, our in-house design team can create artwork from your brief or refine existing designs for print optimization — included free with production orders.
