China Flip Top Cap Mold Manufacturer China Wet Tissue Flip Top Cap

1. Product Specifications: Flip Top Caps & Molds for Wet Tissue Packaging

A. Wet Tissue Flip Top Cap Specifications (End Product)

B. Flip Top Cap Mold Specifications (Production Tool)

2. 3D Design & Engineering: Precision Before Production

A. 3D Design Software & Capabilities

• Software Used: SolidWorks 2024 (for cap structure design), AutoCAD (for mold 2D drawings), Moldflow (for injection molding simulation)
• Deliverables: 3D models (file formats: STL, IGES, STEP) + 2D detailed drawings (with dimension annotations, material specs, and tolerance requirements)
• Key Functions:
  1. Cap-Mold Fit Simulation: Test how the flip cap will form in the mold (e.g., hinge flexibility, gasket compression) to avoid assembly issues.
  2. Flow Analysis: Use Moldflow to simulate plastic flow in the mold—preventing defects like air bubbles, uneven wall thickness, or short shots.
  3. User Experience Optimization: Adjust cap size/shape (e.g., flip tab length) via 3D models to ensure easy opening for all users (including children and the elderly).

B. 3D Design Process for Clients

1. Requirement Collection: We gather your needs (cap size, wet tissue pack type, production volume, customization requests).
2. Preliminary 3D Draft: Within 3 working days, we send a 3D model of the cap and mold for your review.
3. Revision & Approval: We adjust the design based on your feedback (e.g., modify logo position, optimize sealing structure) until you confirm.
4. Simulation & Finalization: Run Moldflow simulations to validate the design; provide a final 3D package (models + drawings) for production.

3. Production Process Flow: Mold Making & Cap Manufacturing

A. Flip Top Cap Mold Production (15-20 Working Days)

1. Material Cutting: Cut P20/H13 steel blocks into mold base/cavity/core sizes using CNC saws (precision: ±0.1mm).
2. CNC Machining:
   • Use 5-axis CNC milling machines to shape mold cavities (accuracy: ±0.005mm).
   • Drill cooling channels and guide pin holes via CNC drilling (position tolerance: ±0.01mm).
3. Heat Treatment: Harden mold steel (P20: 550℃ tempering; H13: 600℃ quenching) to enhance durability.
4. Polishing & Assembly:
   • Hand-polish mold cavities to Ra 0.02μm (mirror finish) to ensure cap surface smoothness.
   • Assemble mold parts (cavity, core, guide pins, cooling system) and test for alignment.
5. Mold Trial: Mount the mold on an injection machine; produce 50-100 sample caps to check for defects (e.g., warping, leakage). Adjust the mold if needed.

B. Wet Tissue Flip Top Cap Production (7-10 Working Days for Bulk Orders)

1. Raw Material Preparation: Mix food-grade PP/PE granules with color masterbatch (if customized) and dry at 80℃ for 4hrs (to remove moisture).
2. Injection Molding:
   • Feed dried material into an injection machine (temperature: 180-220℃ for PP, 160-200℃ for PE).
   • Inject molten plastic into the mold (pressure: 80-120MPa) and cool for 8-12 seconds.
3. Cap Trimming: Remove gate residues from caps using automated trimming machines (no manual marks).
4. Gasket Assembly: Insert food-grade silicone gaskets into caps via robotic arms (position accuracy: ±0.5mm).
5. Quality Inspection:
   • 100% leak test (immerse caps in water, apply 0.3MPa pressure).
   • Random sample check: opening cycles (≥5,000 times), dimension measurement (±0.01mm).
6. Packaging: Pack qualified caps in anti-static bags (500pcs/bag) + corrugated boxes (20 bags/box) with moisture-proof liners.

4. Shipping & Logistics: Global Delivery Made Easy

A. Shipping Options & Lead Times

B. Packaging for Safe Transport

• Caps: Anti-static bags + corrugated boxes (with shock-absorbing foam) to prevent crushing.
• Molds: Wooden crates (heat-treated, ISPM 15 certified) + waterproof film to protect against moisture and impact during sea freight.

C. Customs & Documentation Support

• We provide all required documents: commercial invoice, packing list, FDA/LFGB certificates (for caps), mold material test reports (MTR), and ISPM 15 fumigation certificates (for wooden crates).
• Our logistics team assists with customs clearance—we have 8 years of experience in handling cross-border shipments, ensuring no delays.

5. FAQ: Answers to Your Most Common Questions

Q1: Can you customize the flip top cap mold to match my existing wet tissue packaging?

Q2: What is the MOQ (Minimum Order Quantity) for wet tissue flip top caps and molds?

• Caps: MOQ = 1,000pcs (lower MOQ available for repeat clients).
• Molds: MOQ = 1 mold (we support small-batch mold production for startups).

Q3: How do you ensure the flip top caps are leak-proof for wet tissues?

1. Initial test: Inject air into the closed cap (0.5MPa) and submerge in water—no bubbles allowed.
2. Final test: Pair caps with wet tissue packs, store at 40℃/80% humidity for 7 days—no moisture loss allowed. Our leak-proof rate is 99.9%.

Q4: What is the lead time for a customized flip top cap mold?

Q5: Do you provide after-sales support for molds?

Q6: Can I get samples of the wet tissue flip top caps before placing a bulk order?

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