Polyurethane outer layer on overgrip

Discussion in 'Racquets' started by MilkBender, Aug 4, 2012.

  1. MilkBender

    MilkBender New User

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    so I bought dunlop gecko-tac overgrip yesterday and it has a PU outer layer. what is the purpose of this outer layer? I felt the small sample square took the PU layer off, I liked it better that way. the PU layer just seems like plastic and make the grip kind of slippery


    here's a pic of description and grip

    [​IMG]
     
    #1
  2. db10s

    db10s Hall of Fame

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    Like a plastic wrapper that is clear? If so, I've always taken it off and I'm pretty sure that you should.
     
    #2
  3. BHiC

    BHiC Rookie

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    I am pretty sure that what you are talking about is just designed to protect the grip, and keep it brand new until you put it on your racquet. It is designed solely to protect the grip, and it is expected that you take it off before putting the grip on your racquet.
     
    #3
  4. corners

    corners Legend

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    PU is very tacky and is also very hydrophilic, meaning that it sucks water into itself. This is a fairly unique combination of attributes and is the reason why polyurethane is the primary component of all synthetic overgrips and replacement grips. Underneath the pu layer is cotton or some other absorbant layer that acts like water storage. So the pu wicks your sweat into the cotton layer where it is stored. If you sweat too much snd the cotton becomes saturated, then the pu layer will become slimey and slippery. Geckotac seems to get slimey faster than others. I don't know why.
     
    #4
  5. robbo1970

    robbo1970 Hall of Fame

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    That little square on the outer packaging is a cutting from an overgrip, so it still has the plastic film on it. You would need to peel it off to feel the actual overgrip.
     
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