Sealing Machines

Sealing methods, and what decides between them

• Continuous band sealing (bags and film) — Bags and pouches pass between heated bands that crimp the open end closed — the standard route for poly bags, laminate pouches and expanded-food packaging, with optional date or lot printing at the seal.
• Induction foil sealing (bottle and jar mouths) — An electromagnetic head bonds an aluminium-foil liner inside the closure to the container rim, giving a tamper-evident, leak-resistant seal — applied after capping, on plastic and glass containers.
• Tube, tray, cup and box sealing — Tube filling-and-sealing, tray lidding, cup/can top sealing and carton tape sealing follow their own package logic. We source these subtypes through our supply network — ask with the package construction and we will specify against it.

The deciding inputs are the package construction (film layers, foil thickness, tray or tube material), the seal width and integrity requirement, the container or bag dimensions, and the throughput expressed in bags per minute or sealing speed in m/min. Our longer guides cover the trade-offs:

• Continuous Band Sealer vs Impulse Sealer for a Small Food Packaging Operation: What the Evidence Settles
• Induction Sealing for Bottle Caps: Line Position, Compatibility Checks and Cost Case Before the RFQ
• Tray Sealing vs Stretch and Flow Wrapping for Fresh/Chilled Trays: What the Evidence Can and Cannot Settle
• Tube Filling and Sealing Machines for Plastic, Laminate and Aluminium Tubes: What You Can Specify Before the RFQ

Published sealing machines

Two sealing machines are published, each with its own sourced parameter table:

• ZONESUN FR-770 Continuous Band Sealer — a continuous band sealer for plastic bags: sealing speed 0–12 m/min, sealing width 6–15 mm, temperature range 0–300 °C, published from $288.
• ZONESUN ZS-FK6000A Continuous Electromagnetic Induction Sealer — a continuous electromagnetic induction sealer for foil liners on bottles: seal diameter Phi20 - Phi80mm, Bottle height 20–280 mm, sealing speed 0–10 m/min, published from $679.20.

All figures come from each machine's own parameter table — open the model page for the full specification and its source conditions. Sealing speed is conditional on material, temperature and package geometry, so treat any catalogue speed as a comparison point, not a guaranteed output; seal quality is proven on your package, not on the supplier's test sample.

What we need to quote a sealer

• Package construction (film layers, foil thickness, tray material)
• Seal width and integrity requirement
• Container or bag dimensions
• Target throughput

Scope, limits and what stays unconfirmed

Film, tray, foil, tube and product conditions determine the sealing method and the tests needed before purchase.

When this applies

• Your package is a bag, film-lidded tray, foil-sealed bottle or tube, and you know its construction.
• Seal integrity (leak path, peel strength, induction foil compatibility) is a purchase criterion.
• Throughput is expressed in bags per minute or sealing speed in m/min.

Limits

• Published sealing speed is conditional on material, temperature and package geometry.
• Seal quality is proven on your package, not on the supplier's test sample.

What you get

• A sealing-method recommendation with the material assumptions stated
• A material compatibility question set for the supplier
• A seal-test acceptance checklist to attach to the purchase contract

Verified so far

• Two sealing models are published: a continuous band sealer (speed, power, dimensions sourced; published price $288) and an induction sealer (cap size, container range, power, dimensions and price $679.20 sourced).

Still unconfirmed

• No owner-confirmed seal-integrity data exists for this family; acceptance is by your package trial.
• Lead time for both models is a quotation item.

Confirm before quoting

• Film, tray, foil or tube construction must be confirmed.
• Seal-surface and contact requirements are application-specific.
• Seal integrity must be verified on the production package.

Buyer question

Do published sealing speeds prove seal quality? No. Speed is conditional on material, temperature and package geometry.

Supply through own production plus outsourcing

PackHub fulfils sealing requirements through own production plus a vetted outsourcing network, so the family is not capped by a single factory floor. Band sealers, induction sealers, tube sealing and tray-lidding solutions are all quotable; whichever factory builds it, PackHub stays the one counterparty for specification verification, pre-shipment inspection and export.