Cork Bottle Caps

Product drawing

Basic feature

Product Name	Glass Bottle with Cork Stopper
Color：	Natural wood color
Size	Any size can be customized;
Delivery time&way:	20-30 days after receiving deposit
Shippment:	By sea /air to your nearest airport. By express(DHL,UPS,FEDEX,TNT,EMS) to your door We are High-Level Contracted Partner of DHL, Fedex, UPS, and other International Express Company. We also have Long Cooperative with MAERSk, COSCO, CSCL and other International Ship company. Make the GoodsQuickly, Efficiently and Low Cost to Reach Your Hands.
Qualiy Guarantee	We have 1:1 replacement for defective bottle Carefully Safety Guarantee
Safety Guarantee：	We can make 1:1 compensate for the broken bottle for free
Package:	pallet + carton board +shrink film	carton + dividers	carton + pallet + shrink film
	dividers + shrink film + pallet	color box + carton

Premium Natural Cork Bottle Caps | Custom Sizes & Branding | Tianlei Cork Factory Direct

Engineered for Perfect Seals, Customized for Your Brand – Wine, Spirits, Olive Oil & More

Tianlei Cork: Your OEM Partner for High-Performance, Customizable Cork Closures
As a leading natural cork bottle caps manufacturer, we craft precision closures for craft beverages, gourmet foods, and luxury brands. Our FDA/EU-compliant cork caps combine sustainable materials with custom OEM solutions – including laser engraving, heat transfer printing, and bespoke sizing.

Why Choose Tianlei Natural Cork Caps?

✅ 100% Renewable Cork Oak (Portugal/Spanish Sources)
✅ Superior Seal Technology: 0.0015mm micro-cell structure blocks leakage while allowing 0.0008cc/day* oxygen transfer for optimal aging.
✅ Customization-Ready: From prototype to bulk production (MOQ 5,000+ units).
✅ Eco-Certified: Biodegradable, carbon-negative footprint.

(Measured via ISO 9727 compression testing)*

Engineering Excellence: 3 Critical Details

Density-Tuned Compression
Our corks are calibrated to 78-82 kg/m³ density (vs. industry avg. 70-75 kg/m³) using proprietary granule blending. This ensures:
→ 78-82% uniform compression under 200-300 PSI bottling pressure
→ Zero "blowout" risk for sparkling wines/CO2-heavy products
→ Consistent insertion force (18-22 lbf) for high-speed lines

Laser-Grade Surface Perfection
Each cap undergoes micron-level polishing (Ra ≤ 3.2μm surface roughness) to:
→ Eliminate cork-dust contamination
→ Enable crisp 0.2mm-resolution laser branding (supports 1,200 DPI artwork)
→ Reduce capping machine friction by 40% vs. standard corks

Aerodynamic Chamfer Design
Our 45° ±0.5° CNC-machined bevel edge:
→ Guides caps into bottlenecks at 500+ bottles/minute speeds
→ Prevents "shoulder-jamming" in slope-neck bottles
→ Features 0.5mm radius curvature to avoid glass scoring

ISO 9001 Quality Management System certification

ISO 14001 Environmental Management System certification

CE certification (European Conformity)

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