Integral hot melt adhesive packaging films and use thereof

摘要

Propylene polymer based packaging films for encapsulating hot melt adhesives are disclosed. The packaging films are readily miscible with the various hot melt adhesive chemistries during the melting stage without deleteriously affecting the adhesive properties, making the packaging film particularly well suited for packaging hot melt adhesives in a pillow, cylinder, pouch, block, cartridge and like forms.

主权项

1. A hot melt packaging film comprising a polymer blend,
wherein the polymer blend comprises at least 70 wt % of propylene content and up to 15 wt % of ethylene content; and wherein the packaging film has (a) a viscosity range of about 200,000 to 3,000,000 cps at 200° C.; (b) a peak melting temperature range of about 90 to 140° C. (c) a Tm offset temperature below 149° C.; and (d) a storage modulus (G′) range of about 1×106 to about 1×108 Pascal at 100° C.