When to Use an Inline Capping Machine

By: Isaac Possin

Inline capping has some great advantages but is certainly not for everybody. The capping machine is very popular in the United States and some Latin American countries but is rarely used on Europe, Asia or the Middle East.

This is an inexpensive machine that some manufacturers claim it can handle speeds of up to 200 caps per minute. It will work great on smaller caps, especially caps that have been designed to work on this type of machines (A large gap between the start of the cap and the lead thread is always helpful).

Advantages of this machine include:

-?Low cost investment

-?Easy changeovers without expensive change parts

-?Flexible in handling a wide range of caps and bottles.

-?Great solution if working less than 120 bottles per minute.

Limitations to this machine include:

-?Complications on large diameter caps because of cross threading, it could be as low as 2% but if you are running 50 bottles per minute it means you are averaging one bad capped container every minute which is not fun to deal with.

-?Bad containers and/or caps will cause poorly capped applications, keep in mind that the machine manufacturer is not the only one responsible for a poorly capped container. Is always important that if you're buying a machine that you send samples and have your machine thoroughly tested before leaving the manufacturers floor.

-?Soft round containers sometimes create a problem because the side belts (gripper belts) that hold the bottle squeeze the bottles deforming the bottle.

Keep in mind all this points before buying your next capping machine, always send samples and make sure you have someone inspect the machine and do an FAT (Factory Acceptance Test) any required changes can be done easily in the manufacturer's facility; once it has left it will only get more complicated.

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