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LLDPE blown-film stability

LLDPE has become a key PO for blown film, but not without some difficulties in establishing methods for maintaining bubble stability and gauge consistency. Typically, LDPE is blended with the LLDPE to inaease melt strength and bubble stability, but this can reduce tensile tear, and dart-impact strengths. Alternatively, process developers have turned their attention to a melt-strength additive (MSA) developed by DuPont Canada in the 1980s particularly for when bubble stability is a problem. [Pg.193]

A modern day blown film process is shown in Figure 6.16. Based on the shape of the bubble as the molten polymer exits the die, this line is processing LLDPE. Advanced designs are utilized to cool and stabilize the bubble (referred to as a Bubble Cage) at high line rates to form films of a uniform thickness. Single to multilayer films are possible. [Pg.329]

See other pages where LLDPE blown-film stability is mentioned: [Pg.193]    [Pg.193]    [Pg.283]    [Pg.76]    [Pg.138]    [Pg.23]    [Pg.227]    [Pg.2885]    [Pg.2928]    [Pg.388]    [Pg.1263]   


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