A method for blocking and/or deblocking an optical lens (100) on a heat conducting holding unit (200) comprising an upper assembling surface (210) comprising the steps of: a) providing first layer consisting of an adhesive tape (330) on the upper assembling surface (210) of the holding unit; b) providing a second layer consisting of a layer (310 comprising a thermoplastic material arranged on said adhesive tape (330); c) providing the optical lens (100) with a third layer consisting of an adhesive tape (320) arranged on the bottom surface (120) of said optical lens; d) placing the optical lens (100) with the third layer (320) on the second layer (310) consisting of a layer comprising a thermoplastic material when the thermoplastic material is soften or melted. A method for deblocking said optical lens (100) thanks to heating the holding unit (200).
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