Process for making pre-formed objects

Details Process for making pre-formed objects Process for making pre-formed objects

A - Human Necessities

61

K

A61K 9/70 (2006.01) A61K 8/02 (2006.01) A61K 8/73 (2006.01) A61Q 19/00 (2006.01)

Patent

CA 2468537

Disclosed is a continuous line process for making a pre-formed object having a plurality of surfaces comprising the steps of: (1) providing a sol phase of the composition (10) comprising a solvent and a gelling agent having a sol-gel transition point between about the melting point of the solvent and about the boiling point of the solvent; (2) forming surfaces of the sol phase composition (20) by passing through a surface forming system, the surface forming system pressing the sol phase composition between a plurality of liners (22, 23); (3) cooling the sol phase composition into a gel phase; and (4) cutting the gel phase composition (30); wherein the pre-formed object is free of a supporting substrate.

L'invention concerne un procédé en continu permettant de fabriquer un objet préformé possédant une pluralité de surfaces. Ce procédé comprend les étapes consistant: (1) à utiliser une phase sol de la composition (10) comprenant un solvant et un agent gélifiant possédant une température de transition sol-gel comprise entre environ le point de fusion du solvant et environ le point d'ébullition du solvant; (2) à former des surfaces de la composition à phase sol (20) par passage à travers un système de formation de surface pressant la composition à phase sol entre une pluralité de revêtements (22, 23); (3) à refroidir la composition à phase sol, de manière à obtenir une phase gel; et (4) à découper la composition à phase gel (30); l'objet préformé étant exempt de substrat de support.

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