JK SommeThe process



Can seamers are manufactured in series. Exactly how many are made depends on their degree of commercial acceptance. In this way we can economise on production, since manufacturing parts for a single machine is not the same as making them for several at a time.

montaje cerradoras de latas


There is no robotised assembly line, no "just in time": it is a laborious, manual process. It can be compared to assembling a Swiss watch to which the craftsman affixes his signature once it is completed. For this reason, the professionalism and skill of the fitter plays a vital role.


All elements and assemblies are connected by means of gears, chains and pinions. The precision in machining all of the parts must be total and the tolerances as low as possible. This is where modern machinery come into play: CNC tools (milling machines, lathes, grinders) enable us to manufacture parts of the highest quality.

can seamer manufacturing


The MASTER 440 IN BLUE universal can seamer is one of our most successful machines. Every year, 3 series of 8 units (24 machines) are launched.

The process is a s follows:

1. Launch of the series

Orders are placed for the manufacture and outsourcing of parts. There are two types of parts:

  1. Metal (made to drawings) - Manufactured by JK SOMME and our associated workshops.

    Four supply centres:

    • Our own JK SOMME machining workshop
    • Domestic machining workshops
    • Foreign machining workshops
    • Foundry

The four centres are constantly monitored by our technical department and have the highest quality certifications.

  1. Commercial - We use top-class brands for the supply of bearings, motor-variators, PLCs, motors, lubricators, nuts and bolts, pneumatic equipment, etc.
One MASTER 440 IN BLUE comprises 750 metal parts made to drawings.

Lead time from the manufacturing order until readyness of all parts is 3 months.

2. Inspection of parts and assembly of groups

Once all the parts are available, an exhaustive quality inspection is carried out. Then they go to the assembly plant, where the 25 groups of parts into which the seamer is divided are put together. Some parts such as the main body, the gear box, the column, the clinching cam and the main gears need to be painted.

Lead time from the receipt of the parts until the assembly of the groups is completed is one month.

montaje cerradoras de latas   montaje cerradoras de lata

3. Final assembly

Once each group has been assembled they are put together and the seamer begins to take shape.

An important check run at this stage consists of checking the concentricity between the seaming head and the base plate or lifter plate. This ensures that the body, gear box and column will fit together properly.

Once this test has been passed the electrical panel is installed.

Lead time from the receipt of the groups until final assembly is completed is 15 days.

4. Installation of the tooling and seam quality testing

Complete tooling

Up to this point all MASTER seamers are identical. It is at this stage when a differentiating element is added: the tooling.

A tooling is a set of manufactured parts for seaming a specific shape or type of can. Parts that make up a tooling are the seaming chuck & rolls, the copying disc, seaming clamps, lids deposit, lid chain, lid loading ramp, timing screw, clincher plates, guides, etc.

When designing the tooling we ask the can maker to supply technical drawings of the can body & lid plus their recommendations regarding seaming roll profiles.

Once manufactured, it is installed on the seamer and seaming tests are carried out. This is done with empty can samples sent by the customer (300 cans and bodies). We check the seaming parameters obtained (overlap, ondulations,,,) and make adjustments until achieving perfection and final approval.

Then the In Blue safety guarding & the LED lights are mounted. Finally electrical installation is finished off.

Lead time from the receipt of the format to its assembly on the machine and final testing is 7 days.

5. No-load run test

Complete tooling

The seamer must then pass the final "no-load run test". This consists of starting the machine up and running it non-stop at average speed for 24 hours.

Once it passes this test the MASTER 440 IN Blue is covered with a protective plastic liner and placed on a wooden platform to await transport to the customer's premises.

After 5 months - End of the process.