The "bonding" joining technique has many advantages over screwing, welding or riveting. Die-cut parts made from adhesive tapes are even more practical, as they "dose" the bonding without the need for additional tools. Together, self-adhesive die-cut parts made from films facilitate the construction of many components and devices.
Bonding connects different materials, equalizes expansion coefficients, seals and avoids mechanical peaks as with screws. In some cases, bonding makes it possible to create connections in the first place, for example between glass and plastic frames in cell phones.
CMC Klebetechnik produces single-sided adhesive tapes or double-sided adhesive films on its own coating systems. These are usually used to produce rolls of adhesive tape. This provides the user with adhesive tape products which, on the one hand, have the properties of the film used and, on the other, always have the same quantity of adhesive. This is because, in contrast to the application of liquid adhesives, the layer thickness of adhesive tapes is always the same. This means that there is no under- or overdosing, which significantly improves reliability in series production.
The use of self-adhesive die-cut parts can result in considerable material and assembly time savings in many assembly processes (e.g. fixing before final processing). The adhesive films, which have already been cut to the required shape, can be precisely bonded without further post-processing.
Example of closure labels (e.g. Void adhesive tape)
Single-sided adhesive molded parts are used to reliably and easily seal boxes, bags or crates. These can also be provided with an imprint as a self-adhesive label or contain a safety function (e.g. "Void" lettering when removed). This sealing method with molded parts is particularly suitable for larger quantities, as the punched parts can be supplied on a roll, for example. With a label dispenser, thousands of die-cut parts can be dispensed on a roll.
Example seals (e.g. CMC 75100, PTFE adhesive tape)
Containers, housings and entire switch cabinets are sealed with suitable materials so that nothing can get in or out. Suitable materials (foams, films, silicones) are punched into the appropriate shape for this purpose. If such seals are also self-adhesive, this makes installation considerably easier and prevents the sealing parts from slipping or getting lost during use. Stamped gasket parts have been used for a very long time. With the right adhesive, e.g. one that is resistant to chemicals, their application possibilities are extended even further - with all the advantages that such a self-adhesive die-cut part offers in terms of processability.
Example of accompanying production papers (e.g. fabric adhesive tape)
Today, barcodes or RFID tags are used to determine the production status of an assembly or device in more complex production processes. These consist of die-cut parts that are self-adhesive. In the case of RFID tags, the antenna and the radio chip are additionally covered and protected with die-cut parts.
But not everything can be recorded and managed electronically. For example, many production steps are still accompanied by bags with accompanying documents. These can be quickly and easily attached to the product using strong adhesive die-cut parts with removable glue.
Example insulation die-cut part (e.g. CMC 70752, double-sided adhesive) Kapton® adhesive tape)
Die-cut parts made from insulating films are used in many electrical engineering and electronics products. They increase the dielectric strength of an insulation path, enable a more compact design or even make plastic housings EMC-tight (shielding stampings made of adhesive copper foil CMC 91743). Punched parts, e.g. made of polyester, polyimide or glass fabric, simplify assembly considerably and significantly improve electrical safety. They are dimensionally accurate and reproducible.
Example heat conduction (e.g. CMC 74550, thermally conductive Kapton® MT+)
With increasing demands on energy efficiency, measures must also be taken to keep energy consumption low in refrigerators. This can be achieved by cooling the air inside the refrigerator in the most energy-efficient way possible. The cold that is supplied to the cooling surfaces can be conducted well using die-cut parts made from thermally conductive films. These are soft and compensate for unevenness. At the same time, they conduct the negative heat, i.e. cold, from the cooling plate to the interior of the refrigerator.
A reverse example takes place with so-called heaters: the heat generated by ceramic components (PTC) must be dissipated as optimally as possible. The contacting of these components, which heat the medium (usually air) flowing through them due to their large surface area, is carried out with heat-conducting stamped parts made of Silicone films or thermally conductive films.
Example of protective films (e.g. CMC 12012, polyester adhesive tape, removable)
Many surfaces need to be protected during transportation or use. They should not be scratched, chemically attacked or given an additional property (e.g. good sliding properties). Die-cut parts made from protective films only cover the part of the surface that is affected. Self-adhesive films are usually used. These die-cut parts are hardly noticeable, are easy to attach and can be removed again if necessary.
Example of sound and corrosion protection (e.g. CMC 10106polyester film with acrylic adhesive)
If you combine different metals with each other, you can unintentionally produce an electrochemical "battery". This is because electrochemical corrosion occurs in combination with moisture and salt, for example. Even painted metal parts can suffer paint damage during assembly, causing corrosion damage that initially goes unnoticed. To avoid this phenomenon, punched plastic films are used. They separate the two metal partners precisely and thus prevent an electrochemical series. In addition, such punched film parts act as a brake on the propagation of structure-borne noise and seal the gap area.
Example lighting and sensor technology (e.g. polycarbonate film)
Most of today's light is produced by LEDs. These long-lasting and economical light sources have now become established. However, in order to move from point-shaped light sources to wide-area illumination, molded parts made of diffusely scattering films are used to a large extent. Various PC, POM and PMMA films have a "light-scattering" effect. Depending on their thickness, they are punched or milled to customer specifications at CMC Klebetechnik. This gives modern luminaires their characteristic light properties thanks to die-cut parts from CMC.
CMC Klebetechnik manufactures prototypes, small batches and large mass production runs on various punching machines. The different machines are used in such a way that a customer-specific die-cut part can always be optimally produced. Various cutting plotters, stroke punching machines, cross cutters and laminators as well as a number of rotary punching machines are available. Read more about punching technology here.
You receive die-cut parts directly from the manufacturer. Thanks to the upstream in-house coating of most films and fabrics, you get everything from a single source. Material, adhesive and shape are thus optimally adapted to your needs.
The examples show that die-cut parts made from films from CMC Klebetechnik have many advantages. The company's own product range of adhesive tapes and films is extensive, but not limited. As a converter, CMC Klebetechnik also processes products from other manufacturers into die-cut parts (for example from Nitto, 3M, Tesa, ATP or Advanced Tape) - customized, individual, in partnership.
Die-cut parts made from films