Adhesive tapes: an overview

Klebeband Klebebänder

Adhesive tapes: an overview

What are adhesive tapes and what are adhesive tapes used for?

Adhesive tapes are a combination of a material and an adhesive film and are used to join or glue objects together instead of using fasteners, screws or welding.

The application of adhesive tapes instead of mechanical fasteners makes it possible to simplify the manufacturing processes.

In addition, tapes can protect surfaces so that the surface is not damaged when fasteners or screws are used. Adhesive tapes are also used to provide electrical insulation, to dissipate heat or to seal against media.

Adhesive tapes are good solutions for automated product manufacturing, while liquid adhesives are messy and time-consuming as they have to be sprayed or rolled onto the surface before gluing.

What are adhesive tapes made of?

Adhesive tapes consist of a material known as a carrier material (e.g. paper, plastic film, fabric, foam) that is coated with an adhesive and, if necessary, covered with a release liner.

The adhesive-coated backing is then wound into a jumbo roll. The jumbo roll is then cut into narrow strips to make several small rolls or rolls. Manufacture short rolls. Each roll and its composition are unique and can be tailored to specific applications for a wide variety of adhesive solutions.

How are adhesive tapes used?

Adhesive tapes can be pressure sensitive, thermally activated, or even require moisture to function. In many cases, the tape is used in roll form, but die-cuts are often also made from tape.

Most popular types of adhesive tapes:

What types of pressure sensitive adhesives are there?

Pressure-sensitive adhesives (PSAs) are sticky when dry at room temperature. They adhere firmly to a variety of surfaces and require only the use of a finger or hand or a pressure tool. PSAs don’t require water, solvent, or heat activation to adhere to materials like paper, plastic, glass, wood, cement, and metal. The recommended adhesive pressure is 14.5 – 29 psi = ^ 10 – 20 N / cm². The temperature during application should be moderate, anywhere between 15 ° C and 35 ° C. Lower temperatures could result in insufficient “wetting” or “covering” of the adhesive on the substrate. Very high temperatures can cause the tape to stretch as it is applied, which could create additional stress in the end-use application.

Heat-activated adhesive tape is usually tack-free until activated by a heat source. Heat activated tape takes time to bond at elevated temperatures of 80˚C or higher. Heat-activated adhesive enables aggressive bonding on difficult surfaces such as rubber, EPDM, PU and PVC-based plastic materials. It can be made with a variety of supports that are suitable for a variety of uses.

Water-activated adhesive tape, gummed paper tape or gummed adhesive tape is an adhesive based on starch or bone glue that is applied to a kraft paper carrier. When moistened, this coating becomes sticky. Water activated tape is inexpensive and is used to close and seal boxes. The Dr. Dietrich Müller GmbH does not offer this adhesive tape, but uses it to close cardboard boxes.

What types of adhesives are used for tapes?

Choosing the right adhesive for a project requires a good understanding of the application and the substrate or backing used. In the applications that the Dr. Dietrich Müller GmbH, the following adhesives are primarily used:

  • Acrylate adhesives offer excellent resistance to environmental influences and cure faster than other adhesives.
  • Epoxy resins have high strength and low shrinkage when cured, and are known for their toughness and resistance to chemical and environmental damage.
  • Rubber-based adhesives offer highly flexible bonds and are usually based on butadiene-styrene, butyl, polyisobutylene, or nitrile compounds.
  • Silicone adhesives (polysiloxane) and sealing compounds have a high degree of flexibility and are resistant to very high temperatures.
  • Polyurethane and isocyanate adhesives offer more flexibility, impact resistance, resistance and durability.

More information about Adhesives for adhesive tapes

Which materials are used for the backing of the adhesive tapes?

Adhesive tapes and films differ in terms of the carrier or carrier material. Here are the most common carriers / carrier materials that Dr. Dietrich Mueller GmbH uses:

  • Paper: Paper tape products have a paper backing. This can also be creped. The tapes are also called crepe tapes.
  • tissue: A fabric backing often contains a woven fabric or layer of fabric for reinforcement, added strength, and heat resistance. Synthetic and glass fabrics are used here.
  • Felt and fleece: Felt or fleece tapes are often applied to substrates to avoid scratches.
  • Foam: Adhesive-coated foam carrier tape contains an adhesive that is protected by a liner. Foam is often used for sealing, weathering and assembly.
  • rubber: a rubber backing can be used to make an adaptable electrical insulating and sealing tape made of rubber. There are also self-amalgamating variants.
  • Metal foil: Aluminum, aluminum-reinforced and lead-containing carrier materials withstand flames, extreme temperatures and high humidity. Metal tapes are usually designed to seal joints and seams against moisture or steam. Aluminum foil is laminated to paper or plastic film for greater strength. Copper foils are used in the manufacture of multilayer printed circuit boards (PCB).
  • Plastic films: In general, there are two categories of plastics: thermoplastics and thermosets. Plastic film products contain one or more layers of plastic. They consist of a plastic film that can be clear, colored, printed, or unprinted. They can be single or multi-layer and combined with materials such as paper and / or aluminum. Dietrich Müller GmbH processes polyester films, polyimide films and PVC films in particular.
  • PET/Polyester: Polyethylene terephthalate (PET) / polyester products use a PET or polyester carrier in the form of a film or a laminate. Mylar or Hostaphan is often used as the carrier material.
  • Polyimide: Polyimidklebeband consists of a polyimide film and a heat-resistant silicone adhesive or an acrylate adhesive. Polyimide films are useful substrates for making flexible circuit materials. Polyimide film retains its excellent physical, mechanical, chemical, and electrical properties over a wide range.
  • PVC/Vinyl: Polyvinyl chloride (PVC) / vinyl products use a vinyl or PVC backing to withstand wear, weathering, and abrasion.
  • silicone: Silicone is a great product for gaskets, insulators, press pads, and stamped parts. Many types of silicone backing can be used to meet different needs. These include, in particular, fabric reinforcements.
  • Acrylic foils: Acrylic films are plastic or thermoplastic resin films made using polymethyl methacrylate (PMMA) or polymethyl-2-methylpropanoate. Acrylic films have excellent clarity and are UV stable.
  • Glass / fiberglass: Fiberglass composite material or a layer of glass provides exceptional stability in harsh environments by resisting shrinkage, rotting, or burning.
  • Filament: Filament tape, commonly known as strapping tape, is made up of thousands of filaments (usually fiberglass) woven into yarns and embedded in the adhesive. It is a strong and versatile material that allows the user to bundle similar or odd-shaped items together for shipping or storage. There are also filament tapes that are reinforced with a polyester film.
  • Fluorpolymer/PTFE/PVDF: Polytetrafluoroethylene (PTFE) is an insoluble compound that has a high degree of chemical resistance and a low coefficient of friction. Fluoropolymer films, layers or coatings are made of plastics such as polytetrafluoroethylene (PTFE) or polyvinylidene fluoride (PVDF). Fluoropolymer is widely used in applications that require superior chemical resistance, good dielectric properties, and water and soil repellent properties. It is also used in applications in which the conveyed material must not adhere to the belt, fabric or laminate.
  • Transferklebeband:Transferklebeband besteht aus einem dünnen Klebefilm ohne Träger und kann auf die meisten trockenen Oberflächen als abziehbare Klebeschicht übertragen werden. Transferklebebänder verwenden oft eine abziehbare Schutzfolie, um die Handhabung und das Aufbringen des Bandes zu verbessern.
  • Double-sided adhesive tapes: Double-sided adhesive tapes consist of carrier materials coated on both sides. Each side can have different adhesive strengths. The cover foils are made either from paper, foil or silicone.

Die-cut parts from adhesive tape

Dr. Dietrich Müller GmbH stamped parts or molded parts or adhesive parts that are used in a variety of applications.

Die-cut parts made of adhesive tape can be supplied on a roll, as a die-cut part on a roll, a die-cut part as a single part or as a magazine-type die-cut part. There are also many options when it comes to the number of units. Stamped parts can be manufactured in small series or in large series as mass stamped parts.

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