SERVO PISTON FILLERS
Liquid Filling Machines from STRPACK Jan 11 , 2021
Our company has engineered complete liquid filling lines for over 20 years. The typical filling line is composed of filling, capping and labeling machinery ENTIRELY built and supported by STRPACK in the CHINA.

TIME GRAVITY FILLING MACHINE
How It Works:
The product bulk supply is pumped into a holding tank above a set of pneumatically operated valves. Each valve is independently timed by the filler’s master computer so that precise amounts of liquid will flow by gravity into the container. Gravity fillers built with bottom up fill capability can handle a wide range of flowable liquids including foamy products.

Application:
This type of filler is best suited for liquids with very thin viscosities that do not change with ambient temperature or with batch variation. This machine is also suited for applications where recirculation of the liquid in the fluid path is not desireable. Although this type of filler is used predominantly on products that do not foam, foam may be limited and controlled by subsurface/bottom-up-fill capability.

Examples:
Water, solvents, alcohol, specialty chemicals, paint, inks, corrosive chemicals i.e. acids and bleach.

Advantages:

This is the most economical type of filling machine for a limited range of applications. It is especially well suited for corrosive chemicals.


PISTON FILLING MACHINE
Application:
This type of piston filler is best suited for viscous products that are paste, semi paste, or chunky with large particulates. These piston fillers are built to meet food grade standards and can also handle various chemical applications.

Examples:
Heavy sauces, salsas, salad dressings, cosmetic creams, heavy shampoo, gels, and conditioners, paste cleaners and waxes, adhesives, heavy oils and lubricants.

Advantages:
This lower cost conventional technology is easy to understand for most users. Fast fill rates are achievable with fairly thick products. Warning: this technology is nearly obsolete with the advent of servo positive displacement fillers.


SERVO PUMP FILLING MACHINE
How It Works:
The filler’s master computer independently tracks the rotation of each pump head so that it knows precisely how much product has been delivered. When the target fill volume is reached, each pump and nozzle is instantly shut off, resulting in high accuracy fills of your valuable products. The computer stores all fill parameters in memory for fast changeovers.

Application:
This is the flagship filler of our company and the industry in general. It is extremely flexible and designed to fill almost any product in any fill volume. Even 55 gallon drums can be filled.

Examples:
The servo filler is found in all industries from pharmaceutical, cosmetic, dairy, chemical, food, etc. Both thin and thick products, and also very large particulates can all be filled on this machine. Cosmetic creams as well as thick, chunky sauces at pasteurized temperatures can all be filled.

Advantages:
Fill size changeovers are practically infinite and are instantaneous by computer control. Operator setup is greatly simplified. The design also lends itself very well to sanitary applications due to the ease of automatic cleaning.


NET WEIGH FILLING MACHINE
How It Works:
The product bulk supply is pumped into a holding tank above a set of pneumatically operated valves. Each valve is independently timed by the filler’s master computer so that precise amounts of liquid will flow by gravity into the container. Gravity fillers built with bottom up fill capability can handle a wide range of flowable liquids including foamy products.

Application:
This type of filler is best suited for liquids filled in bulk quantities e.g. 5 gallon pails, etc. or products that have a very high manufactured value.

Examples:
Water, solvents, alcohol, specialty chemicals, paint, inks, corrosive chemicals i.e. acids and bleach.

Advantages:
This is sometimes the only practical (and legal) type of filling for a limited range of applications and for large volume fills.

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