Single-coated adhesive tape with a low outgas and silicone-free* SPA Series

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It is ideal for fixing of hole-filling film for electronic equipment such as HDD that are concerned about outgas. It offers excellent converting performance due to minimal adhesive residue.
*Silicone-free:Silicone material is not intentionally used.


  • The adhesive tape releases minimal outgas.
  • Silicone material is not intentionally used.
  • Corrosive ion impurities are almost undetectable.
  • Release liner can be peeled smoothly.
  • 10 restricted substances by RoHS are not contained.


Chemical Properties [SPAP3025T2]

Total Outgas Qty. [μg/cm2] 0.2
Siloxane Qty. [ng/cm2] <0.4
Unit: ng/cm2
F- Cl- Br- NO3- SO42- PO43-
SPAP3025T2 <0.6 <1.5 <3.5 <4.0 <3.2 <8.0

[Evaluation Method]

  • *Total outgas :
  • Device: GC/MS
  • Heating conditions: 120℃ x 10 min
  • Measurement standard: n-Decane
  • Sampling method: Purge and trap headspace analysis
  • *Siloxane gas:
  • Device: GC/MS
  • Heating conditions: 120℃ x 10 min
  • Measurement standard: Dimethylsiloxane (D3 to D6)
  • Sampling method: Purge and trap headspace analysis
  • <0.4: under the measurement limit (0.4ng/cm2)
  • *Impurity ions: Device: ion chromatograph
  • Ion extraction method: hot water extraction
  • Heating conditions: 100℃ x 45 min


AL composite base material: silicone-free type


  • For plugging HDD casing holes


  • Make sure to remove any oils, moisture, dust, etc. from the substrate.
  • As this is a pressure-sensitive adhesive, make sure to apply ample pressure after attachment.
  • Make sure to smooth out uneven or rough surfaces as much as possible.
  • Some materials are difficult to attach to, such as rubber, polypropylene, and polyethylene.  Please check this before use.
  • A minimum temperature of 10℃ is suitable for attachment.  (Initial adhesive strength is reduced at temperatures lower than 10℃ in the winter months, etc.)
  • It takes a little time for the tape's original adhesive strength to take full effect, so avoid placing or using the tape in a situation in which a lot of strength is needed until several hours have passed from the time of attachment.
  • Do not touch the tape with bare hands once removed from the wrapping.
  • When using this product, please avoid contact with materials or tools containing silicone oil, machining oil, or release agents for rolling or metal molds.

[Storage Precautions]

  • Make sure to store this product in a box.
  • Avoid storing in high-temperature or high-moisture areas. This product should be stored in a cool, dark area away from direct sunlight.
  • Please use this tape within 6 months after delivery.

[Safety Precautions]

  • Take a careful consideration if this product is adapted to the use, purpose and condition before using. 
  • The tape may peel in some cases depending on substrate and attachment conditions. 
  • When using this product in areas that may pose a risk of accident, use together with a different joining method.
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