Abstract: The present invention discloses a method for preparing vials, preferably medical vials by two-stage injection-stretch-blow-molding with a random copolymer of propylene having a melt index MI2 of from 1 to 3 dg/min and an ethylene content of from 2 to 3.5 wt % based on the weight of the resin, and wherein the preform injection temperature is of at least 280° C.

Abstract: This invention discloses bottles and pre-forms prepared by injection-stretch-blow-molding (ISBM) from a composition comprising polypropylene and an inorganic non-sorbitol nucleating agent.

Abstract: This invention discloses a method for preparing a preform for two-stage injection-stretch-blow-moulding (ISBM) from polypropylene resin produced with a Ziegler-Natta catalyst system and having a melt flow index MI2 of from 1 to 20 dg/min, wherein polypropylene is injected at a melt temperature of at least 265° C. Also disclosed are the preforms obtainable by the method, the use of the preforms for preparing bottles, and the bottles prepared from the preforms.

Abstract: The present invention discloses a method for preparing vials, preferably medical vials, by one-stage injection-stretch-blow-moulding with a random copolymer of propylene (RCP) having a melt index of from 1 to 3 dg/min, an ethylene content of less than 3.5 wt % with respect to the weight of the RCP and wherein the preform injection temperature is of at least 210° C.

Abstract: The present invention discloses a method for preparing containers by one-stage injection-stretch-blow-moulding with a resin comprising: a random copolymer of propylene (RCP) having a melt index of from 1.5 to 35 dg/min, an ethylene content of less than 6 wt % with respect to the weight of the RCP; and optionally a nucleating and/or a clarifying agent; wherein the preform injection temperature is larger than 200° C. and wherein the stretching and blowing temperature Tsb is limited to a very narrow range ?T of at most 15° C., said range being a function of the injection temperature Tinj.

Abstract: The present invention discloses a method for preparing vials, preferably medical vials by two-stage injection-stretch-blow-moulding with a random copolymer of propylene having a melt index MI2 of from 1 to 3 dg/min and an ethylene content of from 2 to 3.5 wt % based on the weight of the resin, and wherein the preform injection temperature is of at least 280° C.

Abstract: This invention discloses a method for preparing a preform for two-stage injection-stretch-blow-moulding (ISBM) from polypropylene resin produced with a Ziegler-Natta catalyst system and having a melt flow index MI2 of from 1 to 20 dg/min, wherein polypropylene is injected at a melt temperature of at least 265° C. Also disclosed are the preforms obtainable by the method, the use of the preforms for preparing bottles, and the bottles prepared from the preforms.

Abstract: This invention discloses bottles and pre-forms prepared by injection-stretch-blow-moulding (ISBM) from a composition comprising polypropylene and an inorganic non-sorbitol nucleating agent.