摘要:
Disclosed in one aspect is a film comprising at least one core layer comprising a blend of at least 20 wt %, by weight of the core layer, of a first linear LLDPE having a molecular weight distribution (Mw/Mn) within the range of from 1.0 to 4.0; and at least 20 wt %, by weight of the core layer, of a second LLDPE—in a certain embodiment a short-chain branched LLDP—having a molecular weight distribution (Mw/Mn) within the range of from 1.0 to 7.0; characterized in that the density of the second LLDPE is greater than the density of the first LLDPE by at least 0.002 g/cm3; and/or the I2 of the second LLDPE is greater than the I2 of the first LLDPE by at least 0.5 dg/min. In certain embodiments, the first and second LLDPEs are produced by a metallocene-catalyzed reaction. In yet another embodiment, the combined molecular weight distribution (Mw/Mn) of the first and second LLDPEs is greater than 4.0.
摘要:
Disclosed in one aspect is a film comprising at least one core layer comprising a blend of at least 20 wt %, by weight of the core layer, of a first linear LLDPE having a molecular weight distribution (Mw/Mn) within the range of from 1.0 to 4.0; and at least 20 wt %, by weight of the core layer, of a second LLDPE—in a certain embodiment a short-chain branched LLDP—having a molecular weight distribution (Mw/Mn) within the range of from 1.0 to 7.0; characterized in that the density of the second LLDPE is greater than the density of the first LLDPE by at least 0.002 g/cm3; and/or the I2 of the second LLDPE is greater than the I2 of the first LLDPE by at least 0.5 dg/min. In certain embodiments, the first and second LLDPEs are produced by a metallocene-catalyzed reaction. In yet another embodiment, the combined molecular weight distribution (Mw/Mn) of the first and second LLDPEs is greater than 4.0.
摘要:
Methods for producing a coated biaxially oriented film and films made therefrom. An illustrative method can include orienting a base film in a first direction to provide an uniaxially oriented film; coating at least a portion of the uniaxially oriented film with a polyolefin dispersion to produce a coated uniaxially oriented film; and orienting the coated uniaxially oriented film in a second direction at a temperature sufficient to stretch and anneal the coated film to provide a coated biaxially oriented film having greater than 80% gloss.
摘要:
Multi-layer films particularly suited for packaging applications, including a core layer, a tie layer made from at least 10 wt % of a first polymer and where the first polymer preferably is not present in the core layer are provided. Optionally, the multi-layer film may have a skin layer, a second tie layer and/or a second skin layer. Embodiments may have the advantage of improved seal strength, hermeticity, hot tack and reduced-temperature sealability.
摘要:
The invention discloses an ink-based-image-bearing substrate. This substrate includes a coextruded thermoplastic film having at least one layer made from a polymer derived from polypropylene and another layer made from an acidic functional group-bearing polymer. The layer which includes the polymer derived from the polypropylene is oriented in at least the machine direction. The layer which includes the acidic function group-bearing polymer is the print-receiving layer. The acidic functional group bearing-polymer is preferably ethylene-acrylic acid or ethylene-methacrylic acid, and the acidic functional group-bearing polymer-containing layer has a softening point in a range of 180° to 220° F. Liquid toner ink is electrostatically printed on the layer which includes the acidic functional group-bearing polymer. Additionally, the invention includes a method for providing the ink-based-image-bearing substrate.
摘要:
The invention relates to a laminate of layer (A) a biaxially oriented high density polyethylene film of at least 50 wt. % of the polyethylene of a density of 0.960 or greater; and layer (B) a biaxially oriented polypropylene film.
摘要:
Opaque pearlescent polymer films, e.g., polypropylene, containing finely dispersed particles of an incompatible polymer e.g., nylon, are improved by blending a polymeric interfacial agent with the film polymer and the incompatible polymer to give a film having the incompatible polymer dispersed in smaller spherical particles and reduced stringness.
摘要:
Described is a film, a method of making the film, and a method of packaging articles with the film, the film oriented in at least one direction, and comprising a core layer comprising polypropylene comprising from 0 wt % to 2 wt % comonomer-derived units, from 1 wt % to 20 wt %, by weight of the core layer, of propylene-α-olefin elastomer, and from 1 wt % to 20 wt %, by weight of the core layer, of hydrocarbon resin possessing a softening point of from greater than 100° C.
摘要:
Multi-layer films particularly suited for packaging applications, including a core layer, the core layer having at least one nucleating agent and at least one water vapor transmission inhibitor are provided. Optionally, the multi-layer film may have at least one skin layer and at least one tie layer located intermediate the core layer and the at least one skin layer. Embodiments may have the advantage of superior barrier properties and very low water vapor transmission rates.
摘要:
The present invention relates to a biaxially oriented film having a water wettable surface, the film containing a water wettable porous high density polyethylene (HDPE) surface layer. The water wettable surface layer contains porous HDPE and a silicone glycol coating impregnated in the pore of the HDPE surface layer. The biaxially oriented water wettable film is useful for ink jet printing.