Tethered caps assembly – all processes in one machine

An all-in-one machine from Contexo is claimed to allow for a fast and efficient assembly of tethered caps. The integration of the slitting process enables fast and reliable production. At the same time, the process allows many options when implementing new closures, says the company. The patented concept of the all-in-on system for single- and multi-part tethered caps was developed and designed to integrate all the necessary processes in one system: from assembly to folding and roll slitting of the TE band to closing and packaging. The advantages of the concept are a small footprint, reduced costs and less energy consumption.

The system is based on continuous-motion rotary presses to guarantee maximum output rates. The integrated slitting unit eliminates the need to invest in expensive and high-maintenance injection moulds, says Contexo. Filigree in-mould operations are replaced by simple, safe processes, as material no longer has to be pressed through narrow channels. The integrated folding and roll cutting of the TE strip is not only cost effective, but also stable in the production process: the TE bridges are not stressed or damaged during handling, the downstream process and assembly. This is claimed to eliminate high maintenance costs of the tools. At the same time, the high speed and repeatability in the production process is guaranteed, i.e. significant cost reduction with more safety. The camera stations used inspect the typical elements inside and outside the closure and enable 100% quality control. This ensures that only technically flawless products are sent for further processing. The user-friendliness of the machine has also been taken into account: 360° accessibility, changeable slitting unit and low maintenance thanks to mechanical components.

The solution is also interesting for product development: it opens up many possibilities for product design. Whereas previously there were restrictions in terms of shape and appearance, innovative, eye-catching designs are now possible with the Contexo system. The vulnerability of the TE bridges is eliminated, and the rotating mould axis makes unusual shapes possible. Even closures without TE bridges are feasible.