| 摘要 |
<p>A heat-sealed easy-open article has a film which is heat sealed to itself or another component of the article. The film has a heat seal layer containing a blend of a first polymer and a second polymer. The first polymer is a highly branched homogeneous polyolefin having at least 60 branches per 1000 methylene groups, and for every 100 branches that are methyl, about 4 to 20 ethyl branches, about 1 to 12 propyl branches, about 1-12 butyl branches, about 1 to 10 amyl branches, and about 1 to 20 hexyl or longer branches. The second polymer being present in an amount of at least 5 weight percent based on the weight of the blend. The second polymer having a glass transition temperature or melt temperature which is higher than the first polymer. The wherein the heat seal has a strength of from 5 to 75 percent of an ultimate seal strength formed by heat sealing to itself a corresponding film having a heat seal layer containing 100 percent of the second polymer.</p> |
