Introduction

A chocolate candy with soft filling inside looks simple enough. Making it consistently, piece after piece, is a different problem.

Traditional production strings together separate stages: form the shell, cool it, add filling, seal the base, cool again. Each added step opens a new gap for inconsistency. Shell thickness drifts. Filling shifts off-center. Sealing leaves a visible seam. More steps means more places where the finished piece can miss the target.

A One Shot Chocolate Depositor collapses all of that into a single action. Shell and filling deposit together, through a co-extrusion nozzle, in one motion. One pass, one complete piece.

Works for chocolate pralines, cream-filled chocolates, nut-filled chocolates, caramel centers — most center-filled confectionery formats, really.

What Is One Shot Chocolate Depositing Technology?

Co-extrusion, at its core. Two materials travel through independent channels inside the same nozzle and exit together, at the same moment, at the depositing point.

Outer chocolate moves through the channel surrounding the nozzle core. Filling moves through the inner channel. At the exit, chocolate wraps around the filling automatically — not by mixing, but by nozzle geometry and controlled flow rates working together.

One depositing action, one finished piece. Filling sits enclosed inside the shell from the start, not added on afterward.

Formats this handles:

• Chocolate shell with cream filling
  
• Chocolate with caramel center
  
• Nut-filled chocolate
  
• Two-color chocolate
  
• Layered chocolate candies

The Mini version can push filling ratios up to 90% of total piece weight.

How Does a One Shot Chocolate Depositor Work?

Step 1: Temperature Control

Chocolate viscosity moves with temperature. A few degrees off, and flow through the nozzle changes, shape-holding after depositing changes, surface finish changes.

Separate heating systems run the hoppers and valves independently. Insulation jackets keep hopper temperature stable through the run. Skip that stability, and four problems show up fast:

• Chocolate thickens past the point of clean depositing
  
• Fill weight starts varying piece to piece
  
• Nozzle channels clog under thick material
  
• Surface finish goes rough

Step 2: Separate Material Storage

Two 8L hoppers, two materials, two independent paths from hopper to nozzle.

Step 3: Piston Control of Chocolate and Filling Volume

Pistons set how much of each material deposits per cycle. The Mini uses aviation aluminum pistons — heat-resistant, wear-resistant, built for continuous runs rather than short bursts.

Piston settings determine:

• Shell chocolate weight
  
• Filling volume
  
• Filling ratio
  
• Finished piece size

Shift the ratio — thick shell with a small center, or thin shell with a large one — and the product structure changes. Nozzle and mold stay untouched.

Step 4: Co-Extrusion Through the Nozzle

This is where the one-shot mechanism actually happens.

• Outer chocolate flows through the surrounding channel
  
• Filling moves through the inner channel
  
• Both exit at the same moment, same point
  
• Chocolate wraps around the filling as it exits

The two never mix. Separate passages until the exit point sees to that, and chocolate viscosity is high enough to hold structure around the filling rather than blend into it.

Why Don't the Chocolate and Filling Mix Together?

Three things keep them apart.

Flow speed, controlled separately for each material — chocolate moves around the filling, not into it.

Separate channels — no shared passage until the exit. By the time the two meet, the chocolate has already formed its surrounding shape.

Chocolate viscosity — at depositing temperature, it holds shape under flow pressure. A protective layer forms around the filling instead of flowing randomly through it.

Advantages of the Mini One Shot Chocolate Depositor

Compact Footprint for Small and Medium Production

About 1.26 × 0.84 × 1.66 m. 400 kg. Small chocolate manufacturers, boutique shops, new confectionery brands — this fits spaces where a full production line simply wouldn't.

Multiple Product Formats From One Machine

Single-color, double-color, center-filled, nut-mixed. Format changes come from mold and parameter adjustments, not separate machines for each product type. Mold sizes: 275×175 mm or 275×135 mm.

Line Integration or Standalone Operation

Runs alone, or as one stage inside a full chocolate line:

• Mold heater
  
• Depositor
  
• Mold vibrator
  
• Cooling tunnel
  
• Demoulding machine

Layout goes straight-line or loop, depending on floor space.

Applications

Filled Chocolate Candies — cream-filled, caramel, peanut butter, ganache chocolate.

Premium Chocolate Products — pralines, boutique chocolates, handmade-style formats.

Customized Chocolate Shapes — swap the mold, get blocks, small pieces, or special shapes. The depositing system itself stays the same.

Technical Features of Mini One Shot Chocolate Depositor

Conclusion

One Shot Depositing strips out the stages traditional chocolate production relies on — shell forming, cooling, filling, sealing, cooling again — and replaces the whole sequence with a single depositing action.

For small and medium manufacturers, the Mini One Shot Chocolate Depositor covers the filled-chocolate product range without the footprint or capital a full production line demands. The modular design leaves room to scale into a complete automated system later, if production volume grows into it.