摘要:
A blown film composition including a first high density polyethylene component and a second high density polyethylene component, wherein the blown film contains a mixture of three or more discrete molecular weight distributions, and wherein the second high density polyethylene component has at least one more discrete molecular weight distribution than the first high density polyethylene component.
摘要:
A blown film composition including a first high density polyethylene component and a second high density polyethylene component, wherein the blown film contains a mixture of three or more discrete molecular weight distributions, and wherein the second high density polyethylene component has at least one more discrete molecular weight distribution than the first high density polyethylene component.
摘要:
A cast multilayer film having a core layer made from ICP polypropylene having a thickness of at least 34% of the cast multilayer film, a first layer adjacent to the core layer and a second layer adjacent to the core layer each made from metallocene-based polyethylene (mPE) and having a thickness of from 1 to 33% of the cast multilayer film. The cast multilayer film has increased stiffness without substantial loss of optical, barrier and strength properties as compared with a film of total equal thickness made from the mPE of the first and second layers. The cast multilayer film has increased optical, barrier and strength properties without substantial loss of stiffness as compared with a film of total equal thickness made from the ICP of the core layer.
摘要:
It has been discovered that the properties of sheet or film materials or structures can be improved by co-extruding a polypropylene based impact copolymer core layer with at least a second polyolefin that may be a high density polyethylene (HDPE), medium density polyethylene (MDPE), linear low density polyethylene (LLDPE), and/or low density polyethylene (LDPE). Improvements can include, but are not limited to, reduced haze and increased gloss. These sheet or film materials may be co-extruded with other resins or laminated with other materials after extrusion.