Folding carton auto-bottom tea sachet box with compostable PLA window and gold foil stamping — engineered for premium loose leaf tea, herbal infusion, and specialty tea brands that demand sustainability without sacrificing luxury aesthetics. The auto-lock bottom crates instantly for rapid filling, while the die-cut PLA window (certified compostable per EN 13432) showcases the product inside. Gold foil stamping on the front panel communicates premium positioning. Manufactured by Guangdong Bincai Color Printing Co., Ltd., a full-chain packaging enterprise with 22 years of experience (founded 2003). KBA 1050 4-color and Heidelberg 7+1 UV presses deliver gallery-quality print across 18,000 sqm factory. Daily output 1.7 million boxes.
Applications
- Premium loose leaf tea and herbal infusion retail packaging
- Specialty tea sachet gift sets and subscription box inserts
- Artisanal tea brand counter displays and farmers market packaging
- Hotel and hospitality in-room tea amenity packaging
- Corporate tea gift and promotional packaging
Customization Options
- Auto-lock bottom mechanism for instant setup and high-speed filling operations
- Die-cut window with compostable PLA film (EN 13432 certified) for full product visibility
- CMYK offset printing with Pantone spot color matching on both exterior and interior
- Hot foil stamping in gold, silver, copper, or rose gold for luxury brand positioning
- Debossing and multi-level embossing for textured tactile branding
- Matte, gloss, or soft-touch aqueous coating with optional spot UV accent
- Grease-resistant interior coating for direct food contact compliance
- Custom sizes from 60×40×120mm to 150×80×250mm
- Optional tear strip or perforated opening for tamper evidence
- Compatible with nitrogen-flush sealing for extended shelf life
Production Specifications
- KBA 1050 4-color offset press for ultra-sharp print register on paperboard
- Heidelberg 7+1 UV press for specialty metallic and fluorescent ink applications
- 350-450gsm CCNB (Clay Coated News Back) or SBS (Solid Bleached Sulfate) board
- BOBST die-cutting with precision stripping — clean window edges every time
- Compostable PLA window film heat-sealed with precision registration
- Automatic folding-gluing line with auto-bottom attachment for high-speed production
- ISO 9001:2015 quality management at every stage from prepress to shipping
- FSC-certified board stock for sustainable forestry compliance
Quality Details
- Auto-lock bottom mechanism tested for 5,000+ deployment cycles without failure
- PLA window film with 12-month certified compostability under industrial conditions
- Die-cut window edges with clean, burr-free finish — no film peeling or delamination
- Gold foil adhesion tested via 3M tape test — 0% lift-off on all production batches
- Grease-resistant interior coating verified for direct dry food contact
- Color consistency monitored with inline spectrophotometer on both presses
Why Choose Bincai for Folding Cartons
- 22 years of folding carton manufacturing with continuous investment in BOBST die-cutting
- Dual-factory campus (10,000 + 8,000 sqm) with dedicated folding carton production lines
- KBA 1050 + Heidelberg 7+1 UV combination for unmatched print quality and speed
- 1.7 million daily output ensuring scalability for growing tea brands
- 80+ skilled workforce with specialized training in food-contact packaging
- ISO 9001:2015 and FSC Chain-of-Custody certified — quality and sustainability verified
- Free pre-production samples in 5-7 days with express worldwide shipping
Sustainability & Compliance
- FSC-certified paperboard from responsibly managed forests
- Compostable PLA window film certified to EN 13432 industrial composting standard
- Soy-based inks with low VOC emissions for eco-conscious brand alignment
- Water-based adhesives and aqueous coatings — solvent-free
- EU REACH, US FDA 21 CFR (indirect food contact), and California Proposition 65 compliant
Seven-Stage QC Gates
- Incoming material inspection — board caliper, PLA film thickness, adhesive batch testing
- Pre-press color proof verification — digital proof vs. Pantone reference
- In-line print monitoring — density, dot gain, registration accuracy
- Post-die-cutting inspection — window aperture dimensions, edge quality, crease accuracy
- PLA window adhesion testing — peel strength, optical clarity, compostability certificate
- Folding and gluing line inspection — auto-bottom deployment, glue bond strength
- Final audit per AQL 2.5 Level II — random sampling of finished cartons
FAQ
Is the PLA window truly compostable? Yes. Our PLA window film is certified compostable per EN 13432 under industrial composting conditions (58°C, 90% humidity, 90 days).
Can you print inside the carton? Yes, we offer interior printing on both sides of the board — ideal for brewing instructions, brand stories, or QR codes.
What is the minimum order quantity? MOQ starts at 1,000 units. We can accommodate smaller trial runs of 500 at a slight premium.
Is this carton food-safe? Yes. We use food-grade inks, water-based adhesives, and a grease-resistant interior coating suitable for direct dry food contact.
Can I get a sample before bulk production? Absolutely. Free pre-production samples with digital proof in 5-7 days. Express shipping at customer’s cost.
