Liquid Packing Machine
Liquid packaging machines can handle a wide variety of products. They can perform all the functions of weighing, measuring, bag making, filling, sealing and cutting.
They can also include a net weight machine that monitors container weights as they pass through the line. This is particularly useful for high-value products that require accurate weighing to prevent profit loss.
1. Gravity Filling
A gravity filler is designed to work with liquid products that have thin viscosities that do not change with temperature or batch variance. It works by allowing the product to flow through tubes towards the filling nozzles while letting air pressure push the fluid through the nozzles to create an accurate volumetric time fill.
These machines are ideal for free-flowing, thin products like water, juice, soap, oil, and more. They can also handle foamy products that can rise to the top of the vent tube by using sub-surface capabilities to control and restrict the foam.
To initiate the filling process, an operator simply positions the containers under the fill heads and activates the machine with a switch or foot pedal. From there, the machine will automatically run for a specific time to ensure that each container receives the correct amount of liquid. The timers can be adjusted for each head to allow packagers more flexibility and precision. This is a great option for companies that want to achieve precise, consistent results without adding additional equipment or resources.
2. Piston Filling
A piston filler works differently than a gravity machine. They are designed to handle a more varied range of thick liquid products such as heavy sauces, salsas, salad dressings, sanitizers, and all-bloom Ketchup Packaging Machines some chemical applications. They are also great for thicker products that have chunks or particulates in them. They utilize a 3-way valve mechanism to connect the product hopper, the cylinder, and the nozzles. Typically, when an operator activates the fill cycle with the foot pedal, the valve will open and the piston will pull product from the cylinder to the nozzles.
The length of the stroke of the piston will determine the volume of product pulled in with each fill cycle. The inside diameter of the cylinder and the length of the stroke can be adjusted through the use of a handwheel to accommodate a range of container sizes. This scalability allows the machine to be used for multiple projects without changing out the nozzles. It also saves on production costs by minimizing the number of nozzle changes required between projects. It is a cost effective option for high-volume production lines.
3. Dosing
Various machine types exist that provide dosing and weighing functions for products being packaged. These include linear weighers, rotary filling machines, and form fill seal machines which combine the forming of a package with its product dosing and sealing in one machine. These are typically arranged into separate sub pages according to the type of filling technique employed e.g. volumetric, level, and gravimetric (weighing).
For example, a liquid unit dose packaging system that provides a tamper-evident seal on a single-dose cup of medication is a simple, effective solution for hospitals seeking to improve their ability to package medications efficiently. In fast-paced hospital environments, this small improvement can help medical professionals be more productive and meet the high safety standards that are required of them.
MPI’s FD-Pharma unit dose packaging system includes a built-in printing and pumping system for liquid unit dosage cups that can be used automatic packaging machine for clinical trials, small production and validation runs or full production mode. It can also be upgraded to incorporate a die cut function. This is an external device that connects to the exit area of the FD-Pharma system during operation and trims away the excess film around the container.
4. Sealing
A liquid packing machine can handle many kinds of products. These include water, juices, vegetable oil, milk, soup, vinegar, antiseptic, ghee and more. These machines can also handle a wide range of packaging materials, including sachets. These machines can also come in either inline or rotary configurations. Inline configurations fill containers as they pass along a conveyor while rotary machines are faster and can handle larger volumes of containers.
Often, these machines also incorporate capping technology which can be helpful to companies that need to ship their product in bulk. The parts of a liquid packaging machine that touch the containers or bags should be made of stainless steel to ensure food hygiene and safety.
Some machinery has also removed pneumatic parts which can save money in the long run since compressed air is a costly utility for packaging plants to buy and replace. Some also have “lean technology” that eliminates film breaks which can result in wasted materials. This can reduce the need to re-wrap loads or place extra film in storage. This also enables the machinery to work at an even higher speed.
5. Printing
Liquid packaging machines come in a variety of forms, sizes and layouts. Some include conveyor systems that move containers from process to process, ensuring consistency and speed. They can also incorporate check weight machines that monitor the weight of liquid containers as they move through the machine.
To complete the packing process, the liquid packagers can use a hot stamp coder and printer to print letters and numbers on each bag as it goes through the machine. The machine can also be equipped with a continuous sealer that ensures that the bags are sealed tightly and strong.
The DXDY-500BNII vertical liquid packaging machine can automatically complete the packaging processes of weighing, UV sterilization, bag making, quantitative filling, sealing and cutting. It is suitable for packaging all kinds of liquid without gas including sauce, ice-lolly, popsicle, vinegar, soybean milk, oil, mineral water and various liquid chemical products. The machine can produce three or four sides liquid pouches according to the customers’ requirement. The back seal and intermittent type high precision liquid packaging machine can make different shapes bag including pillow, stand-up with zipper, gusset and spouted.
