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After the dip moulding process is completed, quality control is carried out. The doneness of the vinyl products is tested by bending and pulling the caps and plugs to see if the product cracks. If it does not, it can be followed by one or more finishing processes:

Punching holes

Punching is used to make openings in the product, this is done with both a hand punch and a hydraulic punching machine. The hand punch is used to make holes for the passage of electrical cables such as television cables, for example. As the machine cannot reach this, a hole is punched by hand and the excess plastisol removed.

Some caps need a ventilation hole, these vinyl caps are pressed onto a kind of nail mat with the mould, creating these holes. The bolt holes of springs (e.g. shock absorbers under a machine) are also punched. Dipping puts vinyl plastisol in the holes. A hydraulic punching machine pushes a bolt where it needs to be, which loosens the plastisol and allows it to be removed.

Punching out recesses

This is done to remove certain parts from a dip-moulded product. This is important, for example, to be able to attach the dip-moulded product to the end product. Cut-outs can be punched in all kinds of shapes from rectangles to triangles and o-shapes to w-shapes and slots.

For some parts, a fitting mould is used for this, for example for a fire brigade cutter. For other parts, the points where the finishing must take place are in the mould that is used to dip into the plastisol. This makes it immediately visible after the dipping process where the cut-outs need to be made.

Other treatments

In vinyl coating of springs, there may be air bubbles in the plastisol coating. To ensure that iron particles are no longer visible, these points are repaired. Repairing these damages is done by applying plastisol, which is then heated to 300 degrees so that it curves. Vinyl caps can also be used as sleeves, for example to protect posts. To make these protective sleeves, the back of the vinyl cap is cut off on a lathe.

Customised packaging and assembly

The vinyl products are packed into bags of 100 pieces using a counting scale. Each customer can specify how they want their products packed. Boxes are available in 5 sizes. But it is also possible to receive the caps or plugs in a supplied crate or pallet. If required, we can also arrange the logistics process, where we ship your orders directly to your customers on disposable pallets. This saves you time and costs.

 Examples of finishing processes