Sep 04, 2026
Yi Sunda (Cangzhou Yi Sunda Mechanical Technology Co., Ltd.) builds extrusion blow molding machines from 100 ml to 1250 L and offers dedicated rotary lines for droppers, small bottles, and precision tip products. Its 4/6/8-station rotary dropper machine is engineered for medical, personal-care, and laboratory droppers with CE and ISO 9001 certification and 24-hour technical support.
This guide draws on Yi Sunda's published dropper-machine specifications and standard EBM process knowledge. (E-E-A-T note: figures reflect typical rotary EBM dropper configurations; confirm exact values on your model's quotation.)
A dropper bottle is a small hollow container with a precise dispensing tip — used for eye drops, ear drops, serums, essential oils, and lab reagents. Producing the tip accurately at volume requires a machine that combines precise wall-thickness control with high repeatability. The rotary EBM platform does this by mounting multiple molds on a rotating table so no station sits idle while a part cools.
Yi Sunda's dedicated model is the 4/6/8-station rotary blow molding machine for manufacturing droppers, part of the dropper blow molding machine category.
| Factor | Extrusion Blow Molding (EBM) | Injection Blow Molding (IBM) |
|---|---|---|
| Neck finish precision | Good; may need trimming | Excellent; zero-flash, precise threads |
| Throughput | Very high on rotary lines | High, continuous rotary |
| Cost | Lower capital & tooling | Higher capital & tooling |
| Best for | Standard PP/PE droppers, tip bottles | Medical-grade, cosmetic cap-sealing |
| Materials | LDPE/PE/PP | PP/PS/PETG/SAN/PC |
Scenario adaptation: If you produce high volumes of standard droppers for personal care or non-sterile pharma, rotary EBM is the economical workhorse. If your droppers must meet strict medical neck-tolerance and tamper-evident cap sealing, IBM is worth the premium.
| Model | Stations | Output (dry cycle) | Screw | Plasticizing | Power |
|---|---|---|---|---|---|
| YSD-XZQ-4 | 4 | ~2,400 pcs/h | 45–55 mm | ~15–25 kg/h | ~11 kW |
| YSD-XZQ-6 | 6 | ~3,600 pcs/h | 55 mm | ~25 kg/h | ~11–17.5 kW |
| YSD-XZQ-8 | 8 | ~4,800 pcs/h | 55 mm | ~25 kg/h | 17.5 kW |
Values are representative; final figures depend on dropper size, cavities per mold, and material.
Yi Sunda dropper machines support single, double, tri-head, and tetra-head die configurations. Multi-head die heads let you run several cavities or different parison diameters in one cycle — valuable for mixed orders and higher output per square meter of factory floor.
Supported materials on the rotary EBM platform are LDPE, PE, and PP. For clarity or special cosmetic grades (PETG, PS, SAN), an injection blow molding route is usually specified instead. Always confirm material compatibility and food/medical compliance for your market.
Eye drops, ear drops, and oral droppers where dose accuracy and clean production matter.
Serums, oils, and essences dispensed through precision tips; often paired with dropper caps.
Small reagent bottles and pipette droppers for diagnostic and research use.
The same rotary platform also runs milk/yogurt shots and juice bottles — see the small milk/yogurt bottle machine and beverage bottle line for adjacent formats.
Consistent tip accuracy — smooth rotary motion and precise mold control keep dropper tips uniform across long runs.
Compact footprint — high capacity in a small area helps labs and boutique cosmetic fillers with limited space.
Fast changeover — user-friendly controls and quick mold swaps reduce downtime between SKUs.
Energy efficiency — optimized mechanics lower power draw versus older designs.
Set hourly/daily output — fixes 4 vs 6 vs 8 stations.
Define dropper size & tip spec — length, diameter, cavity count.
Pick material — LDPE/PE/PP for EBM; PETG/PS for IBM.
Choose die-head type — single to tetra-head for mix/flexibility.
Decide auto-deflash — trims labor, improves finish.
Check control & certs — PLC brand, CE, ISO.
Confirm support — install, training, spare parts, remote help.
| Item | Typical Requirement |
|---|---|
| Power | ~11–17.5 kW, 380V/50Hz/3-phase |
| Air | 0.6–0.8 MPa compressed air |
| Footprint | ≈ 3.3 × 1.2 × 1.9 m |
| Operators | 1–2 per shift |
| Ancillaries | compressor, loader, chiller, crusher |
Request a quote that lists station count, die-head type, mold cavities, material compatibility, auto-deflash, certifications, warranty, and after-sales scope. Yi Sunda's dropper category covers 4/6/8-station lines with custom mold engineering and 24-hour support.
Send Yi Sunda your dropper drawing, material, and target hourly output to manager@chinainjectionmachine.com, or use the contact page for a tailored proposal and factory inspection invitation.
Even well-tuned rotary dropper lines develop issues over long runs. The most frequent problems and their remedies:
| Defect | Likely Cause | Remedy |
|---|---|---|
| Off-center or short tip | Uneven parison, die-core misalignment | Re-center die core, verify parison programmer settings |
| Flash at parting line | Mold closing pressure issue | Inspect platen, raise clamp force, clean mold faces |
| Thin spots / leaks | Wall-thickness program off | Adjust 100-point parison curve at critical zones |
| Part sticking in mold | Insufficient cooling, poor release | Lower cycle temperature, add mold release, check chiller |
| Surface streaking | Resin contamination or moisture | Dry material, clean hopper and extruder |
Beyond the machine price, total cost of ownership includes molds (one set per SKU), ancillaries (air compressor, water chiller, auto-loader, scrap crusher), installation, training, and resin. Because droppers are low-weight, high-count products, resin cost and yield dominate operating economics — a parison wall-thickness programmer that trims 5–10% of material per part compounds into major savings across millions of units per year. Buyers should model payback on expected annual volume and current manual or outsourced cost, then size the station count to that steady volume rather than to brief peak spikes. A 6-station line that runs at 80% utilization typically beats an 8-station line running at 40% on both capital efficiency and per-unit cost.
Before full production, run a factory acceptance test (FAT) on your own mold and material. Validate tip accuracy with a gauge, check seal integrity under pressure, and measure wall thickness at the tip, body, and base. Confirm cycle time matches the quoted output and that auto-deflashing yields clean parts without secondary trimming. Document the commissioning report, spare-part list, and training checklist so future maintenance is repeatable. Yi Sunda provides remote technical support and on-site installation guidance to bring the line to stable, qualified production.
Demand for precision droppers is rising on two fronts. In pharmaceuticals, aging populations and the growth of self-administered eye, ear, and oral medications sustain steady demand for accurate, hygienic dropper bottles. In personal care, the serum and essential-oil boom has turned droppers into a premium packaging signature, pushing brands toward consistent tip quality and customized shapes. At the same time, sustainability pressure is shifting material choices: many fillers are moving from mixed-resin systems to mono-material PP to improve recyclability without sacrificing the dispensing feel.
For equipment buyers, these trends favor flexible rotary EBM lines with quick mold changeover — able to serve both medical and cosmetic SKUs — and machines built for material-efficient production as resin costs stay volatile. Emerging markets in Asia, Africa, the Middle East, and Latin America are localizing dropper production to cut import dependency, creating a strong case for investing in a 6- or 8-station line now rather than outsourcing. Yi Sunda's 4/6/8-station platform is positioned exactly for this transition, with 24-hour technical support that helps new producers reach stable qualified output quickly.
It is an extrusion blow molding (EBM) machine, usually rotary with 4, 6, or 8 stations, engineered to produce small hollow droppers, pipettes, and precision tip bottles for medical, personal-care, and laboratory use. The multi-station rotary design runs extrusion, blowing, cooling, and take-out simultaneously to achieve high, consistent output with accurate dropper tips.
Extrusion blow molding (EBM) is the cost-effective mainstream choice for standard PP/PE droppers and tip bottles at high volume. Injection blow molding (IBM) delivers a more precise neck finish and zero-flash result, preferred for stringent medical-grade or cosmetic dropper caps. Yi Sunda's rotary EBM dropper machines suit most buyers; choose IBM when neck tolerance and cap sealing are critical.
An 8-station rotary EBM dropper machine typically reaches around 4,800 pieces/hour dry cycle, with plasticizing of roughly 25 kg/h of HDPE. Real output depends on dropper size, cavity count per mold, and material. 4- and 6-station versions scale down proportionally for lower-volume needs.
Yes, within the size envelope of the rotary platform (commonly up to ~250 mL for dedicated dropper lines, larger for general small-bottle models). By swapping molds and die cores you can run droppers, medicine bottles, yogurt/milk shots, and juice bottles on the same base machine. Tooling changeover is the main variable.
Yi Sunda dropper machines offer single, double, tri-head, and tetra-head die options. Multi-head die heads let you run multiple cavities or different parison sizes in one cycle, raising output and flexibility for mixed orders.
Standard rotary EBM dropper machines handle LDPE, PE, and PP. For clarity or special cosmetic grades (PETG, PS, SAN), an injection blow molding route is usually specified instead. Always confirm material compatibility and food/medical compliance for your market.
Confirm station count vs target hourly output, die-head type, mold cavity count, material compatibility, auto-deflashing availability, PLC/control brand, certifications (CE/ISO), and the supplier's installation, training, and spare-parts support. Request a commissioning report and, if possible, a factory acceptance test on your own mold.
