Food Automatic Induction Sealing Machine

How an automatic induction sealing machine works

The cap arrives with a foil liner already inside it. When the sealing head passes over the cap, a high-frequency field heats only the aluminum layer, which melts a thin coat of polymer onto the bottle lip. Seal time is about 1.5 seconds. The bottle itself stays cool, so the method works on plastic that a hot plate would warp.

The result is a tamper-evident, leak-proof seal under the cap. Food, oil, sauce and pharma brands use it to keep products fresh and to show buyers the pack has not been opened.

Containers it can seal

• PP and HDPE bottles
• LDPE bottles and PET jars
• Glass bottles and jars
• Liquid cans and plastic cups with foil closures

Listed figures

• Sealing and cap diameter from 20 mm to 130 mm
• Sealing power of 500 W, with a field frequency of about 100 kHz
• Automatic grade, for cap sealing
• Listed weight of 150 kg

The source text also describes a hand-held head that the operator holds over each cap. We confirm at quotation whether you get the hand-held head or a conveyor-mounted automatic unit, along with the voltage, since the listing shows both 180 and 220. The frame is usually food-grade stainless steel, and capacity varies by model.

What we check with buyers

Buyers usually send us the cap size, the liner type and the bottle material. We check that the liner suits induction sealing and that the coil covers your full cap range. For lines that also label flat bottles, see the Food Automatic Flat/Oval/Square Bottles Sticker Labeling Machine or our food processing equipment and machines range.

Export and tender supply

We build this Strapping and Sealing Machine unit in China and ship it factory-direct to importers and contractors in the Philippines, Sri Lanka and other markets, on EXW, FOB, CFR or CIF terms. For a tender or bulk order, send the quantity and delivery deadline. For EU buyers, the EU Machinery Regulation and CE marking page sets out the rules, and our certification and compliance documents page explains what we can supply. Price, lead time and warranty are confirmed at enquiry.