Pretzel & Alkaline Biscuit Production Line

A pretzel production line is a fully automatic system that forms, alkaline-treats, bakes, and cools pretzels and alkaline biscuits — delivering the signature golden-brown surface, distinctive roasted flavor, and crisp texture that define this snack category.

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Reference illustration of Pretzel & Alkaline Biscuit Production Line equipment

Product Overview

Wanttone’s pretzel & alkaline biscuit production line combines flexible shaping, a precision alkaline dipping station, and a zoned tunnel oven in one continuous flow, giving food manufacturers consistent quality at industrial scale.

The heart of the line is the alkaline treatment. Raw pieces pass through a food-grade alkaline bath of controlled sodium carbonate (Na₂CO₃) or food-grade sodium hydroxide (NaOH) concentration, with dipping time controlled to a few seconds for a uniform coating. This Maillard-driving surface reaction creates the deep color and characteristic taste during baking — and precise control keeps it repeatable shift after shift.

Unbaked formed pretzel dough pieces transferring along the production line's blue conveyor

Capabilities & Applications

Key Features

  • Multi-Shaping Flexibility

    Roll cutting, die stamping, and rotary molding produce twisted pretzels, sticks, rings, squares, and custom shapes from interchangeable molds.

  • Precision Alkaline Dipping Station

    The dipping pool works with press rollers, idler rollers, and conveyor belts to coat each piece evenly, with dipping time controlled to the second.

  • Alkali Recovery System

    Unused alkaline solution is recovered and recycled, minimizing waste, cutting operating cost, and supporting cleaner plant operation.

  • Accurate Recipe Management

    High-precision ingredient weighing and PLC recipe control ensure every dough batch meets specification before shaping.

  • Flexible Oven Configuration

    Gas, electric, or diesel tunnel ovens with zoned temperature control develop the full golden-brown color and crisp bite of alkaline products.

  • Smart, Connected Control

    A PLC with a touch screen and IoT compatibility enables recipe storage, data tracking, and remote monitoring.

  • Filled Pretzel Option

    An optional center-filling system produces filled pretzels with chocolate or peanut butter cores; the line is available in 400 / 800 / 1200 mm widths with interchangeable modular mold plates for knot, stick, and heart shapes.

Applications

  • The line produces pretzels, alkaline biscuits, alkaline cookies, pretzel sticks, and lye-treated snack crackers. Typical buyers are medium and large biscuit factories adding premium European-style snacks, export-focused brands, private-label co-packers, and food groups in regions where alkaline snacks command strong retail demand.

From Preparation to Packing

  1. Product Preparation

    Confirm the recipe, material condition and batch sequence required for stable production.

  2. Forming & Primary Processing

    Configure the product geometry and process conditions around the agreed finished product.

  3. Thermal or Main Process

    Coordinate time, temperature, energy and line speed with the target output and quality.

  4. Cooling & Finishing

    Stabilize and finish the product before downstream handling and packing.

  5. Packing Handover

    Deliver the product in the orientation, spacing and condition required by the agreed pack format.

Specifications & Configuration

Technical Parameters for Pretzel & Alkaline Biscuit Production Line
ItemSpecification
Shaping methodsRoll cutting / die stamping / rotary molding
Alkaline solutionNa₂CO₃ or food-grade NaOH, controlled concentration
Dipping controlPrecise, typically a few seconds per piece
Horizontal mixer250 kg/batch
Vertical mixer500 kg/batch
Oven optionsGas / Electric / Diesel tunnel oven
Alkali handlingRecovery and recycling system
ControlPLC + touch screen, IoT compatible

Note: Capacity, line width, and layout are customized to your project.

The Wanttone Difference

Alkaline biscuit production punishes weak engineering: inconsistent dipping ruins color, and poorly recycled solution inflates cost. Wanttone’s process discipline comes from over 40 years of biscuit line engineering since the 1981 Yangjiang Biscuit Equipment General Factory — and from running our own biscuit production, where surface treatment and baking uniformity are daily quality battles. Our Foodstuff Machinery Research Institute develops forming and process technology in-house, so dipping tanks, roller sets, and oven zoning are designed as one matched system rather than assembled from generic parts. As an ISO 9001-certified manufacturer, we control materials, machining, and inspection at every step, and our engineers customize molds, alkali concentration parameters, and oven curves to your specific product. From plant design and commissioning to operator training and lifetime maintenance, Wanttone delivers a pretzel line engineered for repeatable quality, not just nameplate speed.

Frequently Asked Questions

What products can this line produce?

Pretzels in twisted, stick, and ring forms, plus alkaline biscuits and cookies in square, round, or custom shapes — all from interchangeable molds.

Which alkaline solution is used, and is it food safe?

Food-grade sodium carbonate (Na₂CO₃) or sodium hydroxide (NaOH) at a precisely controlled concentration — a standard, safe industrial pretzel process.

How does the alkali recycling system work?

Solution that does not adhere to the product is collected and returned to the dipping system for reuse, cutting chemical consumption and waste discharge.

Can I change shapes for different products?

Yes — molds for roll cutting, die stamping, and rotary molding are interchangeable for fast changeovers between shapes and formats.

What after-sales support do you provide?

We offer installation and commissioning, operator training, process parameter setup for your recipes, and lifetime maintenance support with regularly dispatched technicians.