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Specialty Adhesives / Gaskets

Permark are experienced converters of materials that are turned into components used by manufacturers of hard goods. Components are used generally to bond, seal, protect, cushion, filter, insulate, vent, or conduct – examples include the following:

  • Thermally Conductive Pads for electronics.
  • Double lined Silicon Adhesives to adhere rubber keypads.
  • Nomex Gasket materials for electrical insulation.
  • Light Filters and Diffusers – automotive and electronic applications.
  • Protective Films for lenses, panels, appliances.
  • Optical Films for electronics applications.
  • Foam Parts (open and closed cell foams)
  • VHB Adhesives
  • Gaskets for lenses
  • Electrical Shielding
  • Breathable Valves
  • Aluminium Earthing plates

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Processing Capability

Permark’s capabilities include further processing of materials that the material manufacturer is unable to carry out; for example, lamination of secondary liners to roll tapes so that the material can be handled through the production process. Lamination of specialty adhesives to substrates such as foam allowcustomised gaskets and seals with adhesives that are perfectly suited to the materials they will be applied to. Cutting of parts is generally by platen press or laser cutting – depending on volume and materials.

Permark’s manufacturing facility holds a broad range of processing equipment and is able to sustain supply of high volumes of parts on an ongoing basis. The company supplies automotive and medical manufacturers amongst others and understands the need for consistently high quality.

Bonding Tapes and Adhesives

The benefits of using tape adhesives for bonding of parts, when compared to liquid adhesives or mechanical fastening makes it a sensible choice:

Compared to liquid adhesives and mechanical fasteners.

  • Bonding tapes can be stronger – watch this video or this one to see proof!
  • Production assembly time can be dramatically cut – because there is no mess, no drying time, andapplication is very fast, since tape adhesive can be pre-applied to components ready for assembly, and all that is required is for the liner to be removed..
  • With bonding adhesives, mechanical load is spread more evenly than with mechanical fasteners, soeliminates high stress points associated with mechanical fasteners..
  • Bonding tapes require less space compared with mechanical fasteners
  • Bonding tapes are easy and clean to apply – no special tools are generally required, no mess or drying time.

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Adhesive Applications

The large range of adhesives available mean that just about any substrate can be successfully bonded

The example to the left is a disk which has been both kiss cut and fully cut from a sheet of double linered adhesive. It is used to bond two plastic components together in an electronic appliance.

A diverse range of adhesives means that there are very few substrate that cannot be bonded with tape.
Bonding Tape: A disk that has been kiss cut (the outer circle) with the waste stripped away, and fully cut (the center and outside edges) from a sheet of double linered adhesive. The part is used to bond two plastic components together in an electronic appliance.

Some examples of materials that can be bonded with adhesives include:

  • Plastics such as Acrylic, ABS, PE Blends, Polycarbonate, Polypropylene
  • Aluminium, Stainless Steel, Tin, Brass, others.
  • Powder Coated Metal
  • Glass
  • Printed Circuit Boards
  • Silicon Rubber (ie for adhering keypads)

Typical applications include:

  • Gaskets for sealing.
  • Bonding components such as plastic switches and housings on or in appliances.
  • Sealing and Bonding glass or plastic lenses to plastic cases.
  • Bonding of silicone rubber keypads to plastic cases
  • Bonding of Printed Circuit Boards to the inside of housings
  • Bonding of LCD’s to housings

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Material Choice

Specialty Adhesives and materials cover a broad range of applications with many variables.

Selection will depends on a number of factors – for adhesives this will include the surface energy of the components being adhered to, the surface finish of the components, the bond strength required, processing consideration of the parts and environment the parts will operate in. For foams, the application – is it sealing light, moisture, air, the thickness and compression required and so on. Call one of Permark’s sales representatives, or complete a contact form with your particular requirements for a quick response.

Prototype Service

Once the material options have been established, Permark can produce prototype or pre-production parts cost effectively by either laser cutting or single cutting tools, allowing for evaluation of parts prior to commercial production.

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