Applying VHB calls for a high degree of accuracy, as opposed to slamming on a piece of duct tape. In reality, it differs according to the substrates you're using to adhere the tape.

These four pointers will show you what to think about while creating your application technique and assist you in being ready for various scenarios.

Spontaneous Application of Tape

Applications that are automated come in two levels:

  • Application along a line includes a machine that tapes objects as they go along a conveyor.
  • Complex tape applications, such as using a robot arm to place tape on each item in various places and using die-cut parts as well as tape strips, for instance.

Gradually Exerting Pressure

The degree of adhesive-to-surface interaction that develops affects bond strength. Strong application pressure improves bond strength and results in a better adhesive bond.

Achieving adequate surface contact usually requires exerting enough pressure so that the double sided adhesive tape feels around 15 psi (100 kPa). To produce the best "wet-out" or satisfactory contact, more pressure must be applied throughout the tape's width than 15 psi. The task can be completed with a platen pressure, J-roller, or handheld pressure roller.

Be aware that stiff surfaces may take two or three times as much pressure to apply 15 psi to the adhesive.

Cleaning and Surface Preparation

Any glue will adhere better to a clean substrate surface, saving time and potential issues. Use one of the following solvents together with a disposable wipe or towel: For dust, filth, and fingerprints, use either:

1) a 70% IPA along with a 30% water solution or

2) acetone, or both.

  • Heavy Oils: To get rid of heavy grease or oil from a surface, apply a degreaser.
  • Porous surfaces: To create a seamless surface, porous as well as fibered materials like particleboard, wood, and concrete must be coated.
  • Materials that are one of a kind: Glass, and plastics or rubber that include components that migrate (such as plasticizers) require special preparation of the surface.

Preparing the Surface by Abrading

To increase surface area or simply to smooth a rough surface for better contact, abrasion is frequently employed on surfaces with high amounts of dirt or oxides.

In comparison to straight-line motion, ultra-small circular abrading motion is preferred. Since the minor scratches expand the surface area required for bonding, the bond's toughness will rise.

After abrading the surface, rinse the substrate with the IPA/water mixture.

Following these few tips, you will be able to make complete use of tapes effectively.