Online Induction Sealing Machine for Small Jars
The SUNAURA premium inline (online) induction cap sealer drops directly into automated filling-and-capping lines. Its standout feature: an extra-wide Φ20–130 mm sealing diameter that handles tiny dropper bottles through large wide-mouth jars on one machine. Digital control console, extended conveyor, 400 mm head travel.
Product Description
The SUNAURA online induction sealing machine for small jars is a premium inline (online) induction cap sealer engineered to drop directly into automated filling-and-capping production lines. Its defining advantage is an exceptionally wide sealing diameter range — Φ20 to Φ130 mm (optimum 30–120 mm) — which means one machine handles tiny dropper bottles, standard cosmetic jars, and large wide-mouth food jars without changing heads. For buyers who run many neck sizes on one line, this eliminates the downtime and capital cost of running multiple dedicated sealers.
The stable high-frequency generator (1800–2000W) sits in an upright cabinet, paired with an extended load-bearing conveyor (load ≤20 kg) and an upright digital control console for easy operator access. Head height adjusts up to 400 mm to accommodate containers from small 20 ml vials through 1-liter wide-mouth jars. Air cooling via forced fan supports continuous duty, and IP21 protection suits normal industrial production environments.
This is the upgrade path for contract packers, cosmetic manufacturers, and food producers with mixed SKU lines who cannot afford line stops when changing between jar sizes. The machine is built to integrate between your existing capper and downstream conveyor, with configurable belt direction and height.
Technical Specifications
| Model | SNA-O2000 Inline Wide-Range Jar Induction Sealer |
|---|---|
| Sealing Method | Electromagnetic induction, non-contact inline |
| Sealing Diameter | Φ20 – 130 mm (optimum 30 – 120 mm) |
| Conveyor Speed | 2 – 12 m/min, adjustable |
| Max Bottle Height | 40 – 400 mm (head height adjustable) |
| Power | Approx. 1800 – 2000 W |
| Voltage | 220V 50/60 Hz (110V option on request) |
| Cooling System | Air-cooled (forced fan), continuous duty |
| Conveyor | Extended inline belt, load ≤ 20 kg |
| Protection Rating | IP21 |
| Machine Dimensions | Approx. 1550 × 550 × 1350 mm (L × W × H) |
| Net Weight | Approx. 40 – 98 kg (configuration-dependent) |
| Certification | CE Certified, ISO 9001 factory |
Key Features & Benefits
- Wide sealing range Φ20–130 mm — one machine for your whole range: From tiny 20 mm dropper bottles to 130 mm wide-mouth food and cosmetic jars, the single head covers virtually every container format you run. No head swaps, no spare parts inventory.
- Inline / online architecture for full production integration: Designed to drop between your capper and downstream conveyor as a permanent line component — not a bench-top add-on.
- Digital control console with adjustable power and speed: Upright HMI displays power output, belt speed, and fault codes at eye level. Save recipes per SKU for fast changeovers.
- Air-cooled continuous-duty design: Forced-fan cooling supports extended production runs without a water hookup, reducing installation complexity and maintenance.
- Extended conveyor with load-bearing belt: The longer 1550 mm footprint gives more approach and exit room for your existing line interfaces; belt rated to 20 kg total load.
- Adjustable head height to 400 mm: Accommodates containers from 40 mm mini vials to 400 mm tall bottles and large wide-mouth jars in a single machine.
- Energy-saving stable output: Modern transistor generator delivers consistent RF power across the wide sealing range, with automatic standby when no container is detected.
Application Industries
Pharmaceutical Bottles & Jars
Syrups, ointments, creams, and tablets in glass or plastic — tamper-evident foil seals support GMP and regulatory compliance.
Cosmetics Wide-Mouth Jars
Face creams, body butters, scrubs, and masks in 50–120 mm wide-mouth jars — prevents leakage and preserves formulation integrity.
Food Wide-Mouth Jars
Honey, jam, peanut butter, and sauces in wide-mouth glass or PET jars — hermetic foil extends shelf life and prevents tampering.
Nutraceuticals
Powder supplements, protein drinks, and probiotic jars — moisture-barrier foil protects hygroscopic products through distribution.
Chemical Tubs
Industrial chemicals, lubricants, and adhesives in tubs and wide-mouth containers — leak-proof sealing prevents spillage and corrosion.
Contract Packaging (Co-packers)
Multi-SKU lines running many jar sizes for different brands — one wide-range sealer replaces multiple dedicated machines.
Container compatibility: Glass, PET, HDPE, PP, and LDPE bottles and jars with mouth diameters from 20 to 130 mm. Not suitable for metal containers.
How Inline Induction Sealing Works
Inline (online) induction sealing integrates the foil-bonding step into an automated filling-and-capping line. The process itself is electromagnetic — the container never touches the sealing head:
- Container transfers from capper onto the inline conveyor. After capping, each bottle or jar moves onto the extended induction sealer’s belt, where side guides center it beneath the wide-range sealing head.
- Photo-eye triggers RF output as container passes under head. The sensor detects the approaching cap and activates the high-frequency generator. The wide head (up to 130 mm) accommodates both small bottles and large jars without changeover.
- Electromagnetic field induces current in the foil. The 1800–2000W generator produces an alternating magnetic field that penetrates the cap and heats the aluminum foil layer through eddy current resistance.
- Wax melts, heat-seal film bonds to rim. Heat releases the wax into the pulp liner (retained in the cap) while the polymer film on the foil underside fuses to the container rim — glass, PET, HDPE, or PP.
- Sealed container exits to downstream equipment. The jar or bottle continues along the conveyor to labeling, coding, or packing. The foil disc remains bonded to the rim as a tamper-evident, hermetic seal.
Is This Online Wide-Range Sealer Right for Your Line?
This premium inline model is the right choice when you run many different neck sizes on one automated line. Use the four checks below to confirm it matches your operation:
- You run multiple container sizes on one line: If your SKU mix includes small dropper bottles (20 mm) through wide-mouth cosmetic or food jars (100–130 mm), this single-head range eliminates the need for multiple sealers or head changeovers.
- You need true inline integration: The machine is designed to sit permanently between your capper and downstream conveyor. Send us your line layout, belt height, and direction, and we will confirm the interface before order.
- Throughput up to ~120 jars/min on small necks, slower on wide jars: At 2–12 m/min, expect roughly 80–120 containers/min for small caps, dropping to 20–40 jars/min for 120 mm wide-mouth formats. For 200+ BPM continuous, look at the 2300W high-throughput model.
- You cannot afford line stops for changeovers: The digital console can save recipes per SKU, and head height adjustment is tool-free. If your line runs 3–5 SKU changes per shift, this versatility pays for itself quickly.
Troubleshooting Guide — Common Issues & Solutions
Wide-range inline sealers handle a broad mix of containers, so most issues trace back to recipe setup or line alignment. Below are the problems our engineers see most often on multi-SKU jar lines. Always disconnect power before inspecting the sealing head.
| Problem | Possible Causes | Solutions |
|---|---|---|
| Weak seal on wide-mouth jars, fine on small bottles | Power output not scaled up for 100mm+ jars; belt speed too fast; head gap too high. |
|
| Over-heating on repeated wide-jar seals | Sustained high power draws; fan vents blocked; ambient temperature high. |
|
| Foil not covering full jar rim on wide jars | Foil liner diameter smaller than jar mouth; liner off-center in cap; cap too small for jar neck. |
|
| Photo-eye misses bottles or double-triggers | Sensor height wrong for current SKU; sensor lens dirty; container spacing too close. |
|
| Head height not holding between SKU changes | Locking knob not tightened; height scale drifted; column lubrication needed. |
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| Uneven seal around jar circumference | Head not parallel to jar rim; jar tilted on belt; side guides pushing jar off-center. |
|
For multi-SKU recipe setup, send us samples of your widest and narrowest containers — we will pre-set the power and speed recipes in the console before shipment. Reach our engineers at [email protected].
Frequently Asked Questions
What makes this “online” sealer different from a desktop one?
An online (inline) sealer is built to integrate permanently into an automated filling-and-capping line, with its own conveyor section that bridges between your capper and downstream equipment. Desktop units are standalone bench-top machines operated by one person. This online model includes a longer 1550 mm conveyor, an upright digital console, and wider head travel for line integration.
What jar sizes can the Φ20–130mm range actually cover?
It covers everything from 20 mm dropper bottles and vials through 30–50 mm cosmetic serum bottles, 60–90 mm cream and honey jars, up to 100–130 mm wide-mouth food and cosmetic jars. The optimum sealing range for reliable bonds is 30–120 mm. Send us your jar dimensions and we will confirm compatibility.
Can it switch between different jar sizes without tools?
Yes. Head height adjusts via the upright column handwheel or motorized option, and side guides slide freely. The digital console can save a recipe (power, speed, head height) per SKU, so changeover between products is a matter of selecting the recipe and adjusting guides — typically under five minutes.
Does it work on both glass and plastic jars?
Yes — glass, PET, HDPE, PP, and LDPE all seal well, provided you use the correct foil liner formulation for each material. Glass jars need glass-rated liners; PET jars need PET-bottom liners. We will recommend the correct liner type per material and tune the power settings accordingly before shipment.
What is the warranty and integration support?
12-month warranty on the generator, control system, and sealing head, plus lifetime technical support. We provide line layout drawings before shipment to confirm conveyor height, belt direction, and electrical interface. Standard lead time is 15–25 days; custom configurations take 30–40 days. Spare parts worldwide within 48 hours.
Why Buy From SUNAURA Machinery
48,000㎡ Own Factory
In-house manufacturing in Qingdao, China — no middlemen, no trader markup.
CE Certified
All machines meet European safety standards with full documentation.
ISO 9001:2015
Quality management system certified across the entire production process.
SGS Audited Factory
Third-party audited manufacturing facility with 20+ national patents.
12-Month Warranty
Full warranty covering parts and labor from the date of shipment.
Lifetime Support
Technical guidance via email, WhatsApp, and remote video for the machine’s life.
Spare Parts in 48h
Genuine parts shipped worldwide via DHL/FedEx within 48 hours.
100+ Countries Served
Trusted by packaging lines across food, pharma, cosmetics, and chemicals.
Get a Factory-Direct Quote in 24 Hours
Send us your line layout, jar range, and expected output — our engineers reply with a model recommendation, FOB price, and lead time within one business day. Every machine is built in our 48,000㎡ Qingdao factory, CE & ISO 9001 certified.
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