There are many types of filling and sealing machines used to package the variety of products in today's marketplace including liquids, pastes, chunky products, powders, granules, tablets, capsules, etc. Most filling machines are available from semi-automatic tabletop versions all the way up to high speed production line machines, including rotary fillers. Even within categories of filling machines there are often many choices available, so we always encourage you to call or email us to make sure you are buying the exactly correct machine for your application(s). This article mainly introduces the types of liquid filling machines.
There are usually different filling types according to different filling standards.
According to the degree of automation, the types of filling machines are: manual filling machines, semi-automatic filling machines, and fully automatic filling machines.
Manual Filling Machines
These are manually operated and will need no power or electrical source. They are generally used for packing highly viscous liquids like creams, gels, and shampoos but will also suffice for medium viscosity liquids. Manual filling machines are ideal for small scale productions or laboratories where they will provide a higher output speed and increased accuracy than when the liquids are poured by hand. They are ideally used for filling vial and bottles with about 600ml capacities and have a production speed of 15-900 bottles/hour. This type of machine is not produced by NPACK.
Semi-Automatic Filling Machines
These will be faster compared to manual machines and will suit medium and small scale production processes during a high-volume season. Semi-automatic machines are designed with nozzle, syringe and piston parts which guarantee they maintain a zero-drip operation. They can be used to package all types of liquids and those containing small food articles and even adhesives. Semi-automatic machines have filling ranges of 5-100ml and production speeds of 800 fills/hour.
Fully Automated Filling Machines
These are used for large-scale operations and in companies with high production needs. Automated filling machines are generally used with variable speed conveyor systems and for packaging, liquids with all levels of viscosity and those with suspended particles. Some manufacturers also configure their automated machines based on the type and volume of the filling container you are using for your product. You can also add filling heads on the machines to boost your company’s production rates. Automated cup filling and sealing machines can fill 5-10ml of a product and generate 6000 bottles/hour. We mainly produce this type of machine.
According to the filling principle, All liquid filling systems fall into either of two categories: volumetric or liquid level filling machines.
Volumetric Filling Machine vs. Liquid-Level Filling Equipment
There are very few bottles that don't have some small differences in volume. Considering that fact is very important in deciding the type of filling system you are going to use for your packaging. You've probably noticed at the supermarket or auto store that when you look at fill level, some of the bottles seem to look like they are short fills compared to others. Chances are they were filled with volumetric filling machinery. The volume inside the bottle is correct, but because of the small volumetric difference between the bottles it appears to be short.
With a liquid level filling machine all of the bottles will "appear" to have the same volume because the fill level will be the same, but in actuality there will be slight differences in fill volume, no short fills, but some slight overfills.
And so this is the decision you have to make beforehand: Volumetric or Liquid Level? For the vast majority of products the answer will be liquid level filling since it is cheaper and faster than volumetric filling, plus consumers of the product will not feel cheated when the bottles "appear" to be evenly filled. However volumetric filling is the best solution if the product has to have an exact dosage for it's use or if the product is very expensive per ounce and the little bit of giveaway could cost you dearly, especially in a high production environment.