Machine direction oriented polyethylene films for labels and related methods

An oriented film comprising:

• a first layer comprising a long chain branched metallocene linear low density polyethylene (LCB-mLLDPE);
• a second layer comprising a high density polyethylene;
• a third layer comprising 0 wt % to 90 wt % of a metallocene linear low density polyethylene (mLLDPE) and 10 wt % to 100 wt % of an ethylene-based elastomer and/or a propylene-based elastomer, wherein the third layer does not form a surface of the oriented film;
• wherein the oriented film has a polyethylene content of 90 wt % or greater;
• and
• wherein the oriented film has a uniaxially, machine orientation.

A method comprising:

• blowing a film comprising a first layer and a second layer,
• wherein the first layer comprises a long chain branched metallocene linear low density polyethylene (LCB-mLLDPE) and/or a high density polyethylene, and
• wherein the second layer comprises 0 wt % to 90 wt % of a metallocene linear low density polyethylene (mLLDPE) and 10 wt % to 100 wt % of an ethylene-based elastomer and/or a propylene-based elastomer;
• blocking the film with the second layer as a blocking layer to yield a blocked film;
• and
• orienting the blocked film in a machine direction to produce an oriented film, wherein the oriented film has a polyethylene content of 90 wt % or greater.

An oriented film comprising:

• a first layer comprising a long chain branched metallocene linear low density polyethylene (LCB-mLLDPE) and/or a high density polyethylene;
• a second layer comprising 0 wt % to 90 wt % of a metallocene linear low density polyethylene (mLLDPE) and 10 wt % to 100 wt % of an ethylene-based elastomer and/or a propylene-based elastomer, wherein the second layer does not form a surface of the oriented film;
• wherein the oriented film has a polyethylene content of 90 wt % or greater;
• and
• wherein the oriented film has a uniaxially, machine orientation.