High-Precision Child Resistant Cap Mold & Medical CRC Tooling
Engineered for pharmaceutical syrups, oral medicines, OTC drugs, and hazardous chemical bottle packaging. Sailwin high-cavity child resistant cap molds combine two-piece push-and-turn ratchet gear engagement, tamper-evident tear bands, and cleanroom Swedish ASSAB S136 stainless steel, guaranteeing 100% compliance with ASTM D3475 and ISO 8317 safety protocols, senior-friendly adult opening ergonomics, and an ultra-fast 8.8s molding cycle.
Precision Child Resistant Cap Mold Series
Engineered for pharmaceutical syrups, solid dosage tablets, chemical reagents, and household cleaners requiring ASTM D3475 and ISO 8317 certified push-and-turn safety closures.
PUSH & TURN · ASTM D3475Push-and-Turn Pictogram Safety Caps
The gold standard for pharmaceutical medicine bottles. Features embossed "Push Down & Turn" pictogram instructions and internal directional ratchet drive teeth.
- Neck Finish: 28mm / 33mm / 38mm CRC Standards
- Opening Mechanism: Two-piece inner/outer clutching ratchets
- Safety Standards: Complies with US 16 CFR § 1700.20 & ISO 8317
- Cycle Time: 8.8s – 9.8s on 24 to 32 cavities
TAMPER TEETH · CHEMICALTamper-Evident Chemical CRC Shells
Heavy-gauge child-resistant outer shells for agrochemical, disinfectant, and industrial reagent bottles. Combines child safety locking with tamper-evident drop rings.
- Knurled Skirt: 48 vertical ribs provide positive adult grip
- Chemical Resistance: Virgin HDPE / PP copolymer construction
- Anti-Rotation: Reverse-spin locking ratchets prevent unauthorized back-off
- Tooling Cavities: 16, 24, 32 Cavity Hot Runner
2K DUAL-COLOR · TEAR RINGDual-Color Tamper-Evident Medical Caps
High-visibility pharmaceutical safety closure featuring a contrasting red tear-off locking collar. Gives immediate visual confirmation if medicine container was breached.
- Molding Process: 2K rotary two-shot tooling or matched molds
- Tear-Off Ring: Precision micro-bridge tear line (≤ 20N pull force)
- Linerless Seal: Conical crab-claw bore seal eliminates separate foam liners
- Cleanroom Standard: Class 100,000 ISO cleanroom compatible
PHARMA RIBBED · 28/400Pharmaceutical Ribbed Screw Closures
Standard high-speed closure molds for liquid syrup bottles and pill containers. Deep ribbed outer skirt prevents slipping during automated pharmaceutical capping lines.
- Neck Diameters: 20mm, 24mm, 28mm, 33mm, 38mm GPI
- Cavity Matrix: 24 to 48 Cavities with unscrewing cores
- Torque Control: Consistent 1.2–1.8 N·m application torque
- Cycle Time: 8.2s – 9.2s on high-speed electric presses
| Cavity Count | Closure Component | Neck Standard | Cap Weight (g) | Cycle Time (s) | Rec. Machine Tonnage | Child Safety Protocol | Action |
|---|---|---|---|---|---|---|---|
| 16 Cavities | Push-and-Turn Two-Piece CRC Cap Assembly | 28mm CRC Finish | 4.8g – 6.2g | 9.0s – 10.5s | 160T – 200T | ASTM D3475 / ISO 8317 | |
| 24 Cavities | CRC Outer Ratchet Shell (PP) | 33mm / 38mm Neck | 3.2g – 4.5g | 8.8s – 9.8s | 200T – 250T | 16 CFR § 1700.20 Passed | |
| 24 Cavities | CRC Inner Threaded Plug (HDPE) | 28mm / 38mm Core | 2.4g – 3.2g | 8.2s – 9.2s | 180T – 220T | Senior Adult Friendly | |
| 32 Cavities | Liquid Syrup CRC Cap with Linerless Seal | 28mm GPI Thread | 4.5g – 5.8g | 8.5s – 9.5s | 250T – 300T | Zero Seepage at 0.5 Bar | |
| 48 Cavities | Standard Pharma Ribbed Tamper-Evident Cap | 20mm / 24mm Finish | 2.2g – 3.2g | 7.8s – 8.8s | 280T – 350T | DIN EN ISO 8317 Certified |
Need ASTM D3475 Protocol Testing Data or Two-Piece Assembly Tolerances?
Our pharmaceutical closure tooling engineers verify inner/outer clutching tooth engagement and capping torque within 24 hours.
Engineering Precision: Two-Piece CRC Ratchets & Bore Seals
Child-resistant closures require strict mechanical clutch engagement between inner and outer shells. Without downward axial pressure, the outer cap spins freely, preventing children under 5 from accessing hazardous contents.
16-CAVITY CRC TOOLINGTwo-Piece Push-and-Turn Ratchet Clutching
Sailwin designs matched core and cavity sets for both the outer decorative shell and inner threaded core plug. Under normal rotation, the internal directional teeth slip past one another with a clicking sound. Only when pushed down firmly do the drive tabs engage the inner plug threads.
- • Clutching Angle: 45° forward drive angle with 90° slip ramp.
- • Push Force Window: 18N–28N downward push calibrated for senior adults yet child-resistant.
- • Assembly Fit: Snap-fit retaining bead holds inner plug permanently inside outer shell.
LINERLESS CRAB-CLAW BORE SEALLinerless Crab-Claw Seal & Anti-Theft Teeth
Eliminate costly EPE foam or induction foil liners. Our inner core tooling molds an integral crab-claw flexible sealing lip that flexes against the bottle's inner neck bore, withstanding -0.05 MPa vacuum pressure and liquid syrup creep.
- • Conical Crab-Claw Lip: 15° radial sealing flex compensates for glass/PET neck tolerances.
- • Multi-Lead Threading: Fast 1.5-turn application torque reduces capping cycle time.
- • Tamper Ring Bridges: 8 precision micro-bridges snap cleanly at ≤ 18N breaking torque.
2K DUAL-COLOR AUTOMATION2K Tooling & High-Speed Assembly Integration
For high-volume pharmaceutical manufacturing, Sailwin supplies complete automated turnkey cells. From 2K rotary two-shot injection molds producing contrasting color tamper rings to high-speed rotary cap-assembling machines running at 12,000 caps/hour.
- • Turnkey Equipment: Inner Mold + Outer Shell Mold + Automated Snap-Assembly Line.
- • 100% Optical Inspection: High-speed cameras inspect ratchet teeth engagement and tear-band integrity.
- • Cleanroom Standards: All mold lubricants and hydraulic seals certified food/medical grade.
Imported S136 Tool Steel & 5-Axis Precision Machining
Child-resistant closures require strict tooth-angle tolerances (±0.003mm) and pristine mirror finishes to prevent particle shedding in pharmaceutical cleanrooms.
Continuous Flood Coolant CNC Milling
High-speed 24,000 RPM vertical machining center executing multi-axis contouring on reinforced 4Cr13 mold base plates under continuous flood coolant. Eliminates thermal deflection across 32-cavity centerlines.
Swedish ASSAB S136 Stainless Steel
Premium electroslag remelted (ESR) stainless steel vacuum heat-treated to HRC 50–52. 100% rust-proof and resistant to pharmaceutical sanitizers, alcohol rubs, and autoclave sterilization.
- Vacuum Quenching: HRC 50 – 52
- Cavity Mirror Finish: Ra 0.05 μm (SPI A1)
- Guaranteed Tool Life: 3,000,000+ Shots
- Medical Cleanliness: Zero Flaking / Pitting
Japanese Daido NAK80 Tool Steel
Pre-hardened mirror-grade steel used for side slide cams and stripper blocks. Delivers superior dimensional stability and high thermal conductivity to accelerate cap thread cooling.
- Hardness Delivery: HRC 38 – 42
- Slide Precision: ±0.003mm Fit
- Thermal Conductivity: 41.3 W/m·K
- Wear Surface: DLC / TiN Coated
High-Rigidity Mold Base Plates
High-tensile structural tool steel normalized and stress-relieved to prevent plate deflection under 280T clamping pressure. Preserves micro-gap flash control across all cavities.
- Base Hardness: HRC 32 – 36
- Plate Flatness: ≤ 0.015mm / Meter
- Guide Bushings: Bronze with Graphite
- Tensile Strength: 1020 MPa High Rigidity
Class 100,000 Cleanroom & In-House Machine FAT Trials
Take a virtual tour of our 15,000m² precision tooling campus in Taizhou, China. Over 30 CNC machining centers, certified Class 100,000 cleanroom trial injection bays, and optical CMM inspection laboratories.
Tamper Collar Tensile Testing
Molded samples undergoing digital tensiometer testing. The red tear-off locking collar breaks cleanly under 18N pull force while maintaining adult senior-friendly convenience.
Syrup Bottle Capping Verification
Precision 28mm white medical screw caps tested on automatic capping machines to verify smooth 1.5 N·m torque application without stripping or thread galling.
Pharmaceutical Packaging & Tooling Navigation Hub
Explore complete container systems matching oral liquid syrup bottles with dual-color child-resistant closures, plus direct gateways to matching blow molds and preform tooling.
Pharmaceutical Container & Safety Cap Integration
Amber PET/glass syrup bottles, liquid medicines, oral suspensions, and chemical reagents.
Amber Syrup Bottle & CRC Closure System
Matched packaging solution pairing an amber UV-protective PET syrup bottle with our 28mm dual-color push-and-turn child-resistant cap. Thread start is calibrated for zero neck distortion.
Senior Adult Friendly Tactile Grip
Tested with senior adult testing panels under ISO 8317 protocols. The knurled outer skirt provides comfortable palm torque grip while completely resisting child opening attempts.
100% ASTM D3475 Protocol Pass Rate for European Pharma Group
A European pharmaceutical contract manufacturer operating high-speed liquid packaging lines adopted Sailwin 24-cavity push-and-turn CRC cap molds. The closures achieved a 100% child resistance pass rate during independent laboratory testing with 200 children aged 42–51 months, and a 98% senior adult opening success rate.
Turnkey Downstream Tooling & Sub-Pages
Explore matching blow molds, preform molds, and parent category collection hubs.
Syrup & Medicine Bottle Blow Molds
Alloy 7075-T6 stretch blow molds engineered with precise 28mm CRC neck alignment and anti-rocking flat bases.
PET Preform Injection Molds
8 to 96 cavity valve-gate preform molds engineered for amber pharmaceutical vials and 28mm CRC necks.
Water & CSD Bottle Cap Molds
High-speed injection molds for PCO 1881 and 29/25 water closures with in-mold folding tamper bands.
Plastic Injection Molds Hub
Explore all 9 closure categories, preform tooling systems, and custom precision plastic injection tooling.
Frequently Asked Questions on Child Resistant Cap Molds
Explore engineering insights regarding ASTM D3475 protocol compliance, two-piece push-and-turn clutching ratchets, linerless crab-claw seals, and cleanroom S136 tooling.
Sailwin child resistant cap molds are engineered to satisfy the world's most stringent regulatory child-safety and senior-adult protocols:
- ASTM D3475 Standard Classification: Engineered to match Type I (Continuous thread with push-and-turn) and Type II (Lug style with reverse squeeze) child-resistant closures.
- US 16 CFR § 1700.20 Protocol: Tested with panels of 200 children aged 42–51 months, achieving ≥ 85% child resistance before demonstration and ≥ 80% after demonstration.
- ISO 8317 & DIN EN 8317: Certified for reclosable child-resistant packages with ≥ 90% opening success for senior adults aged 50–70 within 1 minute.
The two-piece assembly relies on precision-matched internal clutch teeth between outer shell and inner plug:
- Directional Ratchet Geometry: Teeth feature a steep 45° positive driving flank and a 90° perpendicular slip ramp. Free spin without downward push slips smoothly with audible clicking.
- Micro-EDM Tolerances: Clutch teeth are eroded via Swiss GF wire-cut EDM to ±0.002mm tolerance, ensuring simultaneous engagement across all 12 drive teeth.
- Interference Snap Lip: The outer shell incorporates an internal retaining undercut bead that holds the inner plug permanently, preventing disassembly.
Yes. Eliminating foam or foil liners saves substantial per-unit packaging costs and removes assembly line complexity:
- Crab-Claw Conical Sealing Lip: Our inner core molds an integral 15° radial sealing lip that flexes into the bottle's inner bore, creating a vacuum seal.
- Liquid Syrup Seepage Test: Cap assemblies withstand -0.05 MPa vacuum pressure for 10 minutes and 72-hour inverted testing at 40°C without droplet leakage.
- Liner Support Option: If required for hazardous agrochemicals, we mold flat top lands that accept automated induction foil wads.
Output is optimized for high-volume pharmaceutical contract fillers:
- Molding Cycle: Standard 28mm CRC outer shells run at 8.8s to 9.8s; inner threaded plugs run at 8.2s to 9.2s on 200T–250T servo presses.
- Annual Capacity: A 24-cavity mold yields over 88 million components annually operating 24 hours/day for 330 days.
- High-Conductivity Cooling: Beryllium copper core crowns extract heat rapidly from deep internal ratchet teeth, preventing thermal cycle bottlenecks.
Pharmaceutical packaging requires contamination-free metallurgy:
- 100% Swedish ASSAB S136: ESR stainless steel vacuum heat-treated to HRC 50–52, providing total rust and pitting resistance in cleanroom environments.
- Optical Mirror Lapping: Diamond paste hand-polishing (Ra ≤ 0.05μm) creates an optical mirror surface that eliminates particle flaking or polymer sticking.
- 3,000,000+ Shots Guarantee: Backed by written warranty with serialized spare ratchet cores and slide cams on shelf for rapid courier dispatch.
Need ASTM D3475 Child Protocol Consulting or Reverse-Tooth DFM?
Our tooling directors evaluate bottle drawings, child-resistance torques, and capper chuck profiles within 24 hours.
Scale Production with High-Precision Child Resistant Cap Molds
Partner with Sailwin — your certified child resistant cap mold manufacturer. Submit your safety cap specifications, bottle neck drawings, or child-resistance protocols for a complimentary DFM analysis, ratchet clutch simulation, and itemized quotation within 24 hours.
Inquire Child Resistant Cap Mold
Fill out the form below. Our tooling design team will calculate cavity layouts, tonnage requirements, and quotation.
