What Is an Encrusting Machine? How It Works

An encrusting machine automatically encases a filling inside an outer dough or casing, producing filled foods such as mochi, stuffed pastries, filled buns and cookies. It portions the dough and the filling separately, then forms and seals them into a uniform shaped product, replacing slow and inconsistent hand-filling. In Australia, encrusting machines are most commonly associated with Rheon, the Japanese manufacturer that pioneered the technology, and are supplied locally by Nexus Australia.

How an encrusting machine works

The machine runs two streams at once: an outer dough stream and an inner filling stream. It portions both to a set weight, wraps the dough around the filling, then forms and seals the product into its final shape. Because portioning is automatic, every piece comes out at a consistent size and weight, and the sealing mechanism closes the dough around the filling properly so it does not leak during baking, steaming or frying.

What products can it make?

Encrusting is used across sweet and savoury lines, including:

• Mochi and other filled rice-dough confectionery
• Stuffed pastries and filled breads
• Filled buns, sweet and savoury
• Filled cookies and biscuit products

The same machine switches between products by adjusting its settings, so a commercial bakery can run mochi in the morning and filled buns in the afternoon.

What dough types and fillings can it handle?

This is the main thing that separates a proper encrusting machine from simpler forming equipment. The Rheon encrusting machine supplied by Nexus handles soft, sticky and dense doughs, and processes both sweet and savoury fillings. Customisable settings and adjustments accommodate different product requirements, from delicate rice doughs through to firm pastry.

Why bakeries automate encrusting

• Consistency. Accurate portioning of both dough and filling gives uniform sizes and weights across the whole run, which matters for costing, packaging and customer expectations.
• Sealing integrity. Mechanical sealing reduces the risk of fillings leaking out during cooking, one of the most common failure points in hand-made filled products.
• Throughput. Encrusting machines are built for commercial production volumes, with throughput rates from entry-level up to high-speed production lines.
• Labour. Hand-filling is one of the slowest, most skill-dependent jobs in a bakery. Automating it frees skilled staff for work the machine cannot do.

Where it fits in a production line

An encrusting machine usually sits at the heart of a filled-product line, often fed by dough handling equipment such as dough dividers and followed by trays, proofing, baking and packaging. Nexus supplies encrusting machines as part of its wider food processing range, and can pair the line with downstream packaging such as flow wrapping and labelling. For the bigger picture on choosing production machinery, see our packaging machines buyers guide for Australia.

Frequently asked questions

What does an encrusting machine do?

It automatically encases a filling inside an outer dough or casing, portioning both streams to a set weight, then forming and sealing them into a shaped product such as mochi, a stuffed pastry, a filled bun or a cookie.

What is a Rheon encrusting machine?

Rheon is the Japanese manufacturer that pioneered encrusting technology. Rheon encrusting machines are the industry standard for filled foods, and Nexus Australia supplies and supports them Australia-wide.

Can it handle sticky or soft doughs?

Yes. The machine handles a wide variety of dough types, including soft, sticky and dense doughs, with customisable settings to suit different products and both sweet and savoury fillings.

Is an encrusting machine suitable for a small bakery?

Encrusting machines are available with a range of throughput rates, from entry-level configurations through to high-speed production lines, so they scale from growing commercial bakeries up to full manufacturing operations.

Talk to us about filled products

Nexus Australia supplies Rheon encrusting machines matched to your products, dough types and target output, and supports them Australia-wide. Contact our team to talk through what you want to make and get a configuration matched to your bakery.