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What are Depositors & Fillers?

In the fast-paced world of the food industry, the quest for efficiency, accuracy, and quality is never-ending. Automation plays a pivotal role in meeting these demands, offering solutions that not only streamline production processes but also enhance product consistency and safety. Among the myriad of technological innovations, depositors and fillers stand out as essential machinery for food processing and packaging. These machines, while often operating behind the scenes, are instrumental in the precise portioning and packaging of a vast array of food products, from bakery goods to beverages, dairy products to sauces, and beyond.

Depositors and fillers are designed to automate the portioning and packaging process, ensuring that each product meets exact specifications with remarkable consistency. This not only helps maintain high standards of product quality but also significantly reduces waste, thereby contributing to more sustainable production practices. The distinction between depositors and fillers lies in their specific functionalities: depositors are primarily used for portioning products into containers or moulds, while fillers are adept at adding liquids or semi-liquids to various packaging forms with precision.

Please check our dedicated Depositors & Fillers category for the latest machinery available at Boyd International.

Filling machine

This article aims to delve into the world of depositors and fillers, exploring their types, benefits, and the crucial considerations businesses must make when incorporating these machines into their production lines. By understanding the capabilities and advantages of these machines, food production enterprises can make informed decisions that enhance their operations, improve product quality, and, ultimately, drive their success in a competitive market.

Understanding Depositors and Fillers

In the food manufacturing and packaging industry, the terms "depositor" and "filler" are often used interchangeably, yet they serve distinct purposes within the production line. Both are crucial for automating the process of portioning and packaging, but their roles, types, and applications vary significantly. This section aims to demystify these machines, offering a clearer understanding of their functions and the types available for different food products.

Definition and Functionality

Depositors are designed to precisely portion out food products into containers, trays, or directly onto conveyors as part of a production line. They can handle a variety of consistencies, from thick doughs and pastes to more fluid mixtures, ensuring that each portion is accurately measured and consistently shaped. Depositors are invaluable in bakeries, confectioneries, and prepared food operations for their ability to automate what would otherwise be a labour-intensive process.

Fillers, on the other hand, are specialized for dispensing liquids or semi-liquids into containers. They are engineered to fill bottles, jars, cans, and pouches with precise volumes of product, minimizing waste and maximizing efficiency. From beverages and sauces to soups and dairy products, fillers ensure that each container holds the exact amount of product, adhering to stringent quality and regulatory standards. Fillers specialise in filling free flowing products and the creation of ready meals.

Apple depositor

Types of Depositors and Fillers

Understanding the various types of depositors and fillers is essential for selecting the right equipment for a specific application. Here are the most common types:

  • Volumetric Depositors: These deposit a precise volume of product, ideal for consistent portion control across a wide range of viscosities.

  • Piston Depositors: Utilize a piston mechanism to dispense exact amounts of product, perfect for viscous foods like creams, pastes, and thick sauces.

  • Pocket Depositors: Feature multiple cavities or pockets, each filling with the product before depositing, suitable for products requiring specific shapes or consistencies.

For fillers, the classification is often based on the type of product they handle:

  • Liquid Fillers: Designed for thin, flowable liquids, employing gravity or pressure methods to achieve accurate filling.

  • Viscous Product Fillers: Tailored for thicker, more viscous products, these fillers often use piston or positive displacement mechanisms to handle the product's resistance to flow.

  • Powder Fillers: Specialized for dispensing powdered products, utilizing auger or vacuum techniques to fill containers without compacting the powder unnecessarily.

  • Food Transfer pumps: A food transfer pump is a type of pump used in the food processing industry to move liquid or semi-liquid food products from one location to another within a manufacturing facility. These pumps are designed to handle a wide range of food products, from beverages and dairy items to sauces, soups, and even semi-solid foods like pastes or slurries. The design of food transfer pumps takes into account the need to maintain the integrity, quality, and safety of the food products during the transfer process.


The application of depositors and fillers spans the entire food industry and is tailored to meet the production needs of specific products. For instance, a bakery might use a volumetric depositor for cupcake batter, ensuring each cupcake is the same size. A beverage company, meanwhile, would employ liquid fillers to bottle everything from water to soft drinks, ensuring each bottle contains the same volume of liquid.

Choosing the right type of depositor or filler depends on several factors, including the consistency of the product, the desired speed of production, and the level of precision required. By understanding the functionalities and types of depositors and fillers available, food production companies can significantly enhance their operations, leading to increased efficiency, reduced waste, and a higher-quality end product.

What types of products can be used with depositing and filling machinery?

Liquids and Semi-Liquids

  • Beverages: Water, juices, soft drinks, alcoholic beverages, and other drinkable liquids.

  • Dairy Products: Milk, cream, yogurt, and liquid cheese.

  • Sauces and Dressings: Tomato sauce, mayonnaise, salad dressings, and condiments.

  • Oils: Edible oils like olive oil, vegetable oil, and specialty oils.

Viscous and Semi-Solid Foods

  • Pastes and Purees: Tomato paste, fruit purees, and vegetable pastes.

  • Confectionery: Chocolate, icing, fondant, and other sugar-based pastes.

  • Bakery Fillings: Fruit fillings, creams, custards, and pie fillings.

  • Dairy Products: Thick yogurts, spreads, and soft cheeses.

Particulate and Mixed Texture Foods

  • Soups and Stews: With or without chunks of vegetables, meat, or other ingredients.

  • Ready Meals: Components of ready meals that need precise portioning.

  • Salads and Deli Items: Coleslaw, potato salad, and other deli items with pieces of vegetables or meats.

Powders and Granulated Materials

  • Coffee and Tea: Ground coffee, loose tea leaves, and herbal blends.

  • Spices and Seasonings: Powdered spices, seasoning blends, and salt.

  • Flour and Baking Ingredients: Flour, baking mixes, and powdered ingredients.

Solid Pieces

  • Confectionery: Candies, chocolates, and gummies that require precise placement or inclusion in packages.

  • Snack Foods: Nuts, dried fruits, and snack mixes that need to be portioned into bags or containers.

Benefits of Using Depositors and Fillers

The integration of depositors and fillers into food production lines brings a multitude of advantages. These machines not only streamline operations but also contribute to higher standards of product quality and consistency. Below, we explore the key benefits that make depositors and fillers invaluable assets in the food industry.

Efficiency and Productivity

One of the primary advantages of using depositors and fillers is the significant boost in production efficiency and productivity they offer. These machines automate the portioning and filling processes, which are traditionally labour-intensive and time-consuming when done manually. By speeding up these processes, businesses can achieve a higher output in a shorter amount of time, enabling them to meet growing demand and scale their operations more effectively.

Accuracy and Consistency

Accuracy in portioning and filling is crucial for maintaining product quality and meeting regulatory standards. Depositors and fillers are designed to dispense precise amounts of product, ensuring that each item produced is uniform in weight and volume. This level of consistency is vital for consumer satisfaction and brand reputation, as it guarantees that customers receive exactly what they expect every time they make a purchase.

Waste Reduction

Waste reduction is a significant concern for any food production operation, both from a cost and environmental perspective. Manual portioning and filling can lead to overfilling or inconsistent portion sizes, resulting in product wastage. Depositors and fillers minimize this risk by ensuring that the exact amount of product is used every time, reducing excess waste and helping businesses to operate more sustainably.

Flexibility and Versatility

Modern depositors and fillers are designed with flexibility in mind, capable of handling a wide range of products with different viscosities and consistencies. This versatility allows food manufacturers to use a single machine for multiple products, reducing the need for specialized equipment for each product line. Additionally, many machines offer adjustable settings, making it easy to switch between different portion sizes or container types, further enhancing operational flexibility.

Improved Workplace Safety

Automating the portioning and filling processes not only enhances efficiency but also improves workplace safety. Manual handling of products, especially hot or hazardous materials, can pose significant risks to workers. Depositors and fillers eliminate the need for direct contact with these substances, reducing the risk of injuries and creating a safer working environment.

Cost Savings

Although the initial investment in depositors and fillers may be significant, the long-term cost savings can be substantial. By increasing production efficiency, reducing waste, and minimizing labor costs, these machines can offer a quick return on investment. Over time, the savings on materials and labor, coupled with the ability to scale production to meet demand, contribute to a stronger bottom line for food manufacturers.

Considerations When Choosing Depositors and Fillers

Selecting the right depositors and fillers is a critical decision for any food production operation. These machines represent a substantial investment and have a significant impact on the efficiency, quality, and scalability of production. To ensure that businesses select the most appropriate equipment for their specific needs, several key considerations must be taken into account.

Product Type

The nature of the product is perhaps the most crucial factor in choosing the right machine. The viscosity, texture, and ingredients of the product can greatly influence which type of depositor or filler is best suited for the task. For example, liquid fillers are ideal for thin, flowable liquids, while piston or pocket depositors may be necessary for thicker, more viscous products. Additionally, certain ingredients may require special handling considerations, such as heated hoppers for chocolate or gentle handling for chunky sauces, to maintain the integrity of the product.

Production Volume

The scale of production is another important consideration. The volume of product that needs to be processed and packaged will dictate whether a manual, semi-automatic or fully automatic machine is most appropriate. Small-scale operations may benefit from the flexibility and lower cost of manual or semi-automatic machines, while larger operations requiring high throughput will likely need fully automatic systems to meet their production targets efficiently.

Compliance and Safety

Food production equipment must comply with industry standards and regulations to ensure product safety and quality. This includes materials that come into contact with food, which must be food-grade and easy to clean to prevent contamination. Additionally, machines should be designed with safety features to protect operators, such as guards, emergency stops, and other safety devices. Selecting equipment that meets these compliance and safety standards is essential for any food production operation.

Flexibility and Adaptability

The ability to adapt to changing products and production demands is an important feature of depositors and fillers. Machines that offer easy changeovers between different products, container sizes, or portion volumes provide greater operational flexibility. This adaptability can be a significant advantage in an industry where product trends and consumer preferences are constantly evolving.

Cost and ROI

The cost of depositors and fillers can vary widely based on their capabilities, technology, and degree of automation. While it's important to consider the initial investment, equally crucial is the potential return on investment (ROI). Factors that contribute to a favourable ROI include increased production efficiency, reduced labour costs, lower waste levels, and the ability to scale production. A thorough cost-benefit analysis should be conducted to ensure that the chosen equipment aligns with the business's financial goals and production needs.

Technological Advancements and Trends

Innovation in Depositor and Filler Technology

The food production industry is constantly evolving, driven by technological advancements that aim to improve efficiency, accuracy, and safety. Depositors and fillers are at the forefront of this innovation, with new developments designed to meet the ever-changing needs of food manufacturers. This section explores the latest trends and technological advancements in depositor and filler technology, highlighting how these innovations can benefit food production operations.

Automation and Robotics

Automation has been a game-changer in the food industry, and depositors and fillers have seen significant advancements in this area. Modern machines are now equipped with sophisticated control systems and robotics, enabling more precise portioning, faster production speeds, and reduced human intervention. Robotics integration allows for greater flexibility and accuracy in handling a wide range of products and packaging types, from delicate pastries to viscous sauces.

Smart Technology and IoT Integration

The integration of smart technology and the Internet of Things (IoT) into depositor and filler systems is transforming equipment maintenance and monitoring. Machines equipped with IoT capabilities can collect and analyze data on performance, efficiency, and potential issues in real time. This enables predictive maintenance, where problems can be identified and addressed before they lead to downtime, and provides valuable insights for optimizing production processes.

Sustainable and Energy-Efficient Solutions

Sustainability is a growing concern in the food industry, driving demand for more energy-efficient and environmentally friendly machinery. Newer models of depositors and fillers are designed with energy efficiency in mind, using less power and reducing waste. Some machines now feature materials and components that are more sustainable, such as recyclable parts and non-toxic lubricants, contributing to a lower environmental footprint.

Enhanced Flexibility and Scalability

Flexibility and scalability are critical features in today's fast-paced food market. Innovations in depositor and filler technology have led to machines that are easily adjustable for different products, portion sizes, and packaging types without the need for extensive downtime or manual adjustments. This adaptability allows food manufacturers to quickly respond to market trends and consumer demands, such as the introduction of new product lines or changes in packaging sizes.

Improved Hygiene and Safety Standards

Advances in depositor and filler design are also focused on improving hygiene and safety. Machines now come with more accessible and easier-to-clean components, reducing the risk of contamination and ensuring compliance with food safety standards. Enhanced safety features, such as improved guarding, emergency stops, and touchless operation, protect workers and reduce the risk of accidents on the production floor.

Connectivity and Integration with Production Lines

The ability to seamlessly integrate depositors and fillers with other production line equipment is a trend that enhances overall operational efficiency. Modern machines are designed for easy integration with upstream and downstream processes, allowing for a smooth and continuous flow of production. Connectivity solutions enable centralized control of the entire production line, facilitating better coordination and reducing bottlenecks.

Filling machinery


The exploration of depositors and fillers within the food production industry reveals the critical role these machines play in enhancing operational efficiency, product quality, and safety. From their fundamental functions to the latest technological advancements, it's clear that depositors and fillers are indispensable tools for modern food manufacturing processes. The benefits of incorporating these machines—ranging from increased productivity and accuracy to reduced waste and improved safety—underscore their value in meeting the demanding standards of today's food market.

At Boyd International, our dedicated engineering team has many years of experience with refurbishing depositing machinery. If you have second-hand machinery for sale, please get in touch. Our Depositors & Fillers category can be accessed here.

In the past we have sold everything from fully integrated production lines to single machines such as sausage fillers and vacuum fillers. For any other enquiries, please get in touch with your requirements.