Custom Clear PVC/TPU Cosmetic Bags
High-Frequency Welded | REACH Compliant | MOQ 500pcs | Dongguan Facility
How We Manufacture Clear Cosmetic Bags: 12 Years of RF Welding Expertise
Material Selection & Testing
We source virgin-grade TPU and PVC from certified suppliers, never recycled materials that yellow or crack. Each batch undergoes 72-hour UV exposure testing to verify clarity retention. For TPU, we verify biodegradability certificates; for PVC, we test phthalate levels to ensure REACH compliance before production begins.
Precision Die Cutting
Unlike standard cutting, we use steel-rule dies with polished edges to prevent micro-fractures that lead to tearing. Our CNC cutting machines maintain ±0.5mm tolerance across 500+ pieces—critical for consistent RF welding. For frosted or tinted materials, we adjust blade angles to preserve surface finish.
High-Frequency Welding
Our 8kW RF welding machines operate at 27.12MHz to create molecular bonds between material layers. This isn't gluing—it's fusing. We tune weld time (2.5-4 seconds) and pressure (3-5 bar) based on material thickness (0.15mm-0.5mm). Each weld is tested with 5kg pull-force; anything less and we adjust calibration.
Hardware Installation
Zippers are ultrasonic welded to the bag body, not sewn, maintaining waterproof integrity. We use YKK-grade nylon coils with gold-plated sliders rated for 5,000+ cycles. For pullers, we offer custom shapes—logos, beads, or metal tags—attached with stainless steel split rings that resist corrosion in humid bathroom environments.
100% Inspection & Packaging
Every bag undergoes backlight inspection to detect pinholes or weak welds. We perform zipper cycling tests (50 open/close cycles) and leak tests (water submersion for 30 seconds). Approved bags are packed with tissue paper to prevent surface scratching and moisture-barrier bags for sea freight protection.
From Our Lab: After producing 2 million+ clear bags, we've learned that the enemy of transparency is time. Cheap PVC yellows within 6 months; our TPU remains crystal clear for 3+ years. We've also found that RF weld strength varies by humidity—our Dongguan facility maintains 45-55% RH to ensure consistent bonds. When you order from Merris, you're getting bags that pass TSA scrutiny, survive checked luggage, and maintain brand presentation through repeated use.
Why Merris for Your Clear Cosmetic Bag Line?
We've manufactured clear bags for beauty brands, airlines, and retailers since 2013. Here's what that production experience means for your project.
Material Science Expertise
- TPU Clarity Retention: Our TPU maintains 90%+ light transmission after 2 years vs. 60% for standard PVC. We source from Covestro and Huntsman, not commodity traders.
- PVC Cost Optimization: For budget projects, we offer 0.15mm-0.3mm PVC with calcium-zinc stabilizers (not lead-based) that meet EU standards at 40% lower cost than TPU.
- Color Consistency: Pantone matching within Delta E 2.0 across batches. We keep color masterbatch samples for 2 years to ensure reorder consistency.
RF Welding Mastery
- Weld Strength: Our RF seams achieve 15N/mm peel strength—3x stronger than heat-sealed competitors. We weld at 8kW with automated pressure feedback.
- Complex Geometries: Unlike standard factories, we weld 3D shapes (gussets, rounded corners) without crease lines that weaken over time.
- Leak Testing: Every 100th bag undergoes 24-hour water submersion. Our leak rate is 0.05% vs. industry average of 2%.
Compliance & Speed
- 500-Piece MOQ: Standard minimum per color. Mix 2-3 colors in one order for market testing without inventory risk.
- 7-Day Sampling: We stock 5 TPU/PVC colors for rapid prototyping. Your branded sample ships in 7 days; existing variants in 48 hours.
- Certification Ready: REACH, Prop 65, and FDA compliance documentation provided. ISO 9001 and BSCI audited facility.
Ready to Launch Your Clear Bag Line?
Whether you need TSA-approved travel pouches for airline retail, GWP bags for skincare launches, or promotional items for beauty brands, we scale with you. Our 500-piece MOQ works for boutique orders and our capacity handles 100,000+ piece retail rollouts. Request your sample kit—includes material swatches, welded samples, and a finished bag with your logo.
Inside Our RF Welding Facility
See how we transform raw TPU and PVC into leak-proof cosmetic bags. This tour shows our die-cutting, RF welding stations, and 100% inspection process.
Video Chapters: 00:20 Material Inspection & Testing | 00:55 CNC Die Cutting | 01:30 RF Welding Process | 02:05 Zipper Ultrasonic Welding | 02:40 Backlight Inspection | 03:00 Leak Testing & Packaging
Manufacturing FAQs
Direct answers from our production team in Dongguan.
Request Your Factory Quote
Get pricing and sample details within 8 hours. MOQ 500pcs.
