PROCESS FOR PRODUCING CLEAR POLYPROPYLENE BASED STRETCH BLOW MOLDED CONTAINERS WITH IMPROVED INFRARED HEAT-UP RATES

PROCESS FOR PRODUCING CLEAR POLYPROPYLENE BASED STRETCH BLOW MOLDED CONTAINERS WITH IMPROVED INFRARED HEAT-UP RATES

A process for producing clear injection stretch blow molded containers comprising: I. molding a propylene polymer composition comprising: (A) a propylene polymer chosen from: (i) a homopolymer or minirandom copolymer of propylene containing up to 1.0 wt % of at least one of ethylene and C4-C10 alpha...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BRASEL TIMOTHY C, ROBESON LEROY V, SARTORI GABRIELLA, MCKEEMAN DAVID H, WOERZ ALEXANDER
Format: Patent
Sprache:eng
Schlagworte:
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:A process for producing clear injection stretch blow molded containers comprising: I. molding a propylene polymer composition comprising: (A) a propylene polymer chosen from: (i) a homopolymer or minirandom copolymer of propylene containing up to 1.0 wt % of at least one of ethylene and C4-C10 alpha-olefins; (ii) a random copolymer of propylene and at least one olefin chosen from ethylene and C4-C10 alpha-olefins; and (iii) mixtures thereof, the propylene polymer having a melt flow rate of from about 1 to about 50; and (B) about 1 to about 1000 ppm, based on the weight of the propylene polymer, of at least one radiant heat absorbent; thereby forming a preform; and II. stretch blow molding the preform; wherein in step II, heat is supplied by infrared radiation, and the containers have a haze value less than 25.0%.