LINQTAPE Polyimide Tapes | Questions & Answers

We recent­ly had a cus­tomer ask us sev­er­al ques­tions about our LINQTAPE PIT1S / PIT1A Poly­imide tapes. We have post­ed the ques­tions as long as the answers below:

Q1. What’s the min­i­mum poly­imide film thickness?
A1. Our thinnest stan­dard mate­r­i­al is 1mil (0.025mm). We can pro­duce thin­ner, but there would be min­i­mum order quan­ti­ties associated.

Q2. Could we pro­vide free sam­ples of PIT1A?
A2. As you can imag­ine, CAPLINQ receives many, many requests for “free sam­ples”. The man­u­al entries, paper­work and ulti­mate­ly costs that result­ed from work­ing out­side our cur­rent work­flow sys­tem (ensur­ing cor­rect ship-to address­es, price quotes, sam­ples lists, fol­low-up, etc.) was not in line with the low-cost mod­el that we try to bring to our cus­tomers. As such, we have done away with min­i­mum order quan­ti­ties and imple­ment­ed a way to order sin­gle units instead of ship­ping free samples.

Q3. What is the heat resis­tance? We require it above 200C for 1–2 hours.
A3. The tem­per­a­ture resis­tance depends on the appli­ca­tion. The poly­imide film itself can with­stand tem­per­a­tures of 450 °F (~230 °C) and for short peri­ods, can with­stand tem­per­a­tures as high as 900 °F (~480 °C). The weak point is the adhe­sive sys­tem. The sil­i­cone adhe­sive (PIT1S-Series) can main­tain adhe­sion above 200C, as well as short (2–3 min­utes) peri­ods at 260C. Above this tem­per­a­ture, adhe­sion drops off quick­ly. Acrylic-adhe­sives (PIT1A-Series) have a low­er tem­per­a­ture resis­tance, but at low­er tem­per­a­tures (Room tem­per­a­ture) have a high­er adhe­sion than sil­i­cones. Depend­ing on the appli­ca­tion (name­ly mask­ing), it is quite rea­son­able that the PIT1S could with­stand 200C for 2 hours.

Q4. Under a cer­tain degree of tem­per­a­ture an pres­sure, would the glue be com­ing out from the edge?
A4. It is imag­in­able that under pres­sure at high tem­per­a­ture that the adhe­sive lay­er is com­pressed. Whether and how far it would come out from under the poly­imide back­ing, we have no data for.

Q5. What is the low­est thick­ness that can be pro­duced, and will the thick­ness influ­ence its heat resis­tance ability?
A5. I need to check with pro­duc­tion what the min­i­mum thick­ness is, but no, heat resis­tance is inde­pen­dent of the film thickness.

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