Process for producing a powder from a packaged tablet

C - Chemistry – Metallurgy – 11 – D

Patent

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Details

C11D 17/06 (2006.01) C11D 11/00 (2006.01)

Patent

CA 2336953

The present invention relates to a process for producing a powder from a packaged tablet, the package comprising plastic materials, whereby the process is characterised in that it comprises a first step of submitting the packaged tablet to mechanical degradation with first mechanical degradation means, a second step of sifting with first sifting means to obtain an intermediate material, a third step of submitting the intermediate material to mechanical degradation with second mechanical degradation means, and a fourth step of sifting with second sifting means to obtain the powder, whereby the powder obtained comprises less than 0.05 % per weight of plastic material.

L'invention concerne un procédé de production d'une poudre à partir d'une pastille emballée dont l'emballage se compose de matières plastiques. Ce procédé est caractérisé en ce qu'il comprend une première étape qui consiste à soumettre la pastille emballée à une dégradation mécanique à l'aide d'un premier dispositif de dégradation mécanique; une seconde étape qui consiste à tamiser la pastille à l'aide d'un premier dispositif de tamisage afin d'obtenir une matière intermédiaire; une troisième étape qui consiste à soumettre ladite matière intermédiaire à une dégradation mécanique à l'aide d'un second dispositif de dégradation mécanique; enfin une quatrième étape qui consiste à tamiser la pastille à l'aide d'un second dispositif de tamisage afin d'obtenir la poudre voulue, laquelle comprend moins de 0,05 % en poids de matière plastique.

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