A: Absolutely. Our labelling systems can handle containers made of glass, aluminium, plastic, etc. The process uses pressure-sensitive labels that adhere to any smooth surface, so the container material isn’t an issue. We do account for differences: for example, glass bottles might be wet or cold (from rinsing or chilled filling), so we can equip the system with wipe-down or specify adhesives suited for low temperatures to ensure labels stick properly. Similarly, aluminium cans often have slight tapering, which our applicators can accommodate. We’ll recommend the right label material and adhesive for each container type to guarantee a secure application. In short, one machine can label various container materials without problems.

A: Yes, we offer configurations for front-and-back labelling of bottles. These typically use two applicators: one places the front label and another the back label as each bottle passes through once. The bottle is precisely aligned (sometimes using a timing screw or alignment belt) so both labels land correctly. Kelgray can provide a synchronized front/back labelling setup where both labels are applied in one smooth operation. This is common for beverages, cosmetics, etc., where there’s a decorative front label and a regulatory back label. The big advantage is the bottle gets fully labelled on both sides in a single pass, maintaining high throughput – no need to run it through twice.

A: Our systems can work with a wide range of pressure-sensitive label materials. Whether you use paper labels, polypropylene/polyester (plastic) labels, or even transparent “no-label look” labels, the machine can be configured to handle them. We often adjust the sensor type for clear labels (e.g. using an ultrasonic sensor to detect transparent labels accurately). The applicators and peel mechanism handle standard label stock with backing; as long as the labels are within the supported size range, the material is not an issue. We’ll ensure the printer/applicator settings (pressure, feed rate, etc.) are tuned for your specific label material and thickness. So yes – paper or film labels, glossy or matte, clear or opaque – all can be used on Kelgray labelling systems.