Multi-layer label

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Open a multilayer label

A multilayer label (also English multi-layer label ) is a label having a plurality of layers. It consists of an upper layer with text fields / information and at least one lower layer with additional space for text fields. The lower or lower layers are covered when the label is closed. If the upper layer, which is connected to the lower layers, is opened by opening, the information fields not visible from the outside on the back of the upper layer and the lower layers are accessible to the user.

history

Jim Hattemer originally developed a concept of multilayer labels in the early 1970s. It was based on the idea of ​​printing a sheet of material and attaching another printed sheet over it. A dry adhesive between the webs enabled the production of a multilayer label. To date, many different types of multilayer labels have been developed, for example with film as the face and paper as the middle layer on a release paper. Patented variants should also be mentioned, which for example contain several printed layers coated with UV varnish. Patents for multilayer labels are owned by David Instance, the Schreiner Group, Bayer AG and the Denny Bros Group - Fix-a-Form, among others. A utility model from the German Patent and Trademark Office, for example, can be provided by Klaus Dinges for his self-adhesive multi-layer label, the RIECO Group for its wet-adhesive multi-tasking label, and Jungdruck GmbH & Co KG with their wet-glue multi-layer labels (Teclabel).

background

With the globally harmonized system for the classification and labeling of chemicals (GHS), which will come into force on June 1, 2015 at the latest, manufacturers and fillers are under pressure to label their products with more hazardous substances. Aerosols and spray cans are, for example, products that are affected by this multiple labeling. However, these usually have only a small surface on which the space for safety instructions is limited. The multilayer label is one way of compensating for this lack of space.

Function / performance

  • more space for information directly on the product for safety instructions, advertising, recipes, product application, bonus campaigns
  • resealable or non-resealable
  • The possibility of multilingualism of a label (saving of storage space, elimination of country-specific storage, reduced relabeling effort)

Labeling

The labeling of multi-layer labels is now possible both in the area of ​​wet glue (cold glue labeling or hot glue labeling) and self-adhesive in the form of adhesive labels . The placing of the multilayer labels on the product or the packaging is carried out, as with single-layer roll labels, by manual or automatic label dispensers.

There are different types of multilayer labels:

  • Sandwich labels / peel-off labels / double-layer labels: They consist of two or three layers of labels. The carrier label (lower layer) is provided with a permanent adhesive. The cover label (top layer) can be peeled off the carrier label up to a tightly closed band and stuck on again. All sides can be printed except for the adhesive side of the carrier label.
  • Booklet labels / Leporello labels: This type of label consists of a base label, a paper booklet, which is a mini brochure that is glued to the base label, and a laminate film. The laminate film protects the paper booklet from external influences and enables the label to be wedged. As an alternative, there are booklet labels that do not have a laminate film, so they cannot be resealed. A special form of the label is the so-called Leporelle label. It is provided with an accordion or zigzag fold ( Leporello fold).
  • Wrap labels / banderoles: The wrap label was developed for round packaging. The label is attached to the container with an adhesive surface and can therefore be wrapped several times. They consist either of label paper or plastic film. They can either be permanent or removable and printed on one or both sides.
  • Wet glue multilayer labels: We speak of a wet glue multilayer label if the labels are not produced on self-adhesive roll material, but coated with a wet glue in sheet offset and only later on the marking line.

Manufacturing

  • Printing process: There are primarily three printing processes used: offset printing , flexographic printing and digital printing . Other printing processes are screen printing and letterpress printing.
  • Materials: A distinction is made between multi-layer labels made of paper and film. The following plastics are mainly used for labels made of film: polyester (PET), polyethylene (PE), polypropylene (PP) and polyvinyl chloride (PVC). When it comes to paper, there is a wide variety of label papers from 60 g to 135 g.
  • Adhesives for multilayer labels: A distinction is made between an adhesive with permanent adhesion and an adhesive that is removable. The semi-permanent adhesive is a combination of the two, it can be removed easily at first, but later adheres firmly to the materials. For removable labels, limit values ​​of the adhesive strength of 3 N / 25 mm (corresponds to 1.2 N / 10 mm) are common. For permanent labels, the value is 9 N / 25 mm (corresponds to 3.6 N / 10 mm).
  • '' Further processing: '' Various further processing technologies can be used for further processing:
    • Finishing / lamination / lamination / embossing
    • Braille / tactile warning triangle
    • Folding / perforation
  • Gathering / gluing the folds: In order for the individual layers to be made into a multi-layer label , all the layers must be brought together. This is done with a sandwich or booklet system. Another method of joining is by gluing the folds. During the folding process, glue is distributed on the collar in order to connect the individual layers.
  • The punching: After connecting the layers, the contour is punched out. The work step is carried out with the help of a sharp-edged mechanical punching tool made of metal ( cylinder punch ) or with a laser punch .
  • The rewinding: The rewinding takes place on a label winder. Because there are different models of label dispensers, the finished labels are wound onto roll cores with different core and outer diameters.

Web links

Individual evidence

  1. ↑ German Patent and Trademark Office Which patent?
  2. ↑ Peeling Back the Layers ( Memento of the original from July 7, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.etiquette.co.uk
  3. ↑ [1] - Search in the German Patent and Trademark Office
  4. ^ Federal Environment Agency for Man and the Environment
  5. ↑ Multi-layer labels. November 14, 2016, accessed January 12, 2017 .