Provided is a polyolefin microporous membrane in which the membrane thickness is 1.0-17.0 μm inclusive, the flexural modulus, which is the value of the flexural rigidity (gf×cm.sup.2/cm) in the longitudinal direction (MD) divided by the cube of the membrane thickness (μm), is 0.3 (μgf×cm.sup.2/cm)/μm.sup.3 to 1.5 (μgf×cm.sup.2/cm)/μm.sup.3 inclusive, and the basis weight-converted puncture strength is 70 gf/(g/m.sup.2) to 160 gf/(g/m.sup.2) inclusive.

Provided is a polyolefin microporous membrane in which the membrane thickness is 1.0-17.0 μm inclusive, the flexural modulus, which is the value of the flexural rigidity (gf×cm.sup.2/cm) in the longitudinal direction (MD) divided by the cube of the membrane thickness (μm), is 0.3 (μgf×cm.sup.2/cm)/μm.sup.3 to 1.5 (μgf×cm.sup.2/cm)/μm.sup.3 inclusive, and the basis weight-converted puncture strength is 70 gf/(g/m.sup.2) to 160 gf/(g/m.sup.2) inclusive.

In order to provide a shoe member excellent in strength, the shoe member is composed of a polymer composition that includes cellulose nanofibers and one or more of inorganic fillers selected from the group consisting of magnesium carbonate particles, calcium carbonate particles, silica particles, and talc particles.

The present invention relates to an olefin-based polymer, which has (1) a density (d) ranging from 0.850 to 0.865 g/cc, (2) a melt index (MI, 190° C., 2.16 kg load conditions) ranging from 0.1 g/10 min to 3.0 g/10 min, and (3) a soluble fraction (SF) of 10 wt % or more at −20° C. in cross-fractionation chromatography (CFC), in which a weight average molecular weight (Mw) of the soluble fraction is in a range of 50,000 g/mol to 500,000 g/mol. The olefin-based polymer according to the present invention exhibits improved anti-blocking properties as a low-density olefin-based polymer.

A laminate film with moderate barrier properties can include: a machine direction oriented (MDO) blown polyethylene substrate laminated to a blown polyethylene sealant film, wherein the blown polyethylene sealant film comprises about 5 wt % to about 25 wt % of hydrocarbon resin. Preferably, a polymeric composition of the laminate film is about 90 wt % to about 100 wt % of polyethylene and hydrocarbon resin cumulatively.

A laminate film with moderate barrier properties can include: a machine direction oriented (MDO) blown polyethylene substrate laminated to a blown polyethylene sealant film, wherein the blown polyethylene sealant film comprises about 5 wt % to about 25 wt % of hydrocarbon resin. Preferably, a polymeric composition of the laminate film is about 90 wt % to about 100 wt % of polyethylene and hydrocarbon resin cumulatively.

The application relates to a vessel closure seal, in particular for fat-containing filling materials, comprising a polymer compound of which the seal consists essentially or entirely, a) wherein the polymer compound is PVC-free and comprises at least one TPS, and at least two different co-PPs, or at least one co-PP with a Shore A hardness of max. 80, a crystallisation enthalpy of max. 30 J/g and a melting point of at least 155° C., b) and the polymer compound has a Shore A hardness at 70° C. of between 30 and 85 and a Molt Flow Index (5 kg/190° C.) of less than 20 g/10 min.

The application relates to a vessel closure seal, in particular for fat-containing filling materials, comprising a polymer compound of which the seal consists essentially or entirely, a) wherein the polymer compound is PVC-free and comprises at least one TPS, and at least two different co-PPs, or at least one co-PP with a Shore A hardness of max. 80, a crystallisation enthalpy of max. 30 J/g and a melting point of at least 155° C., b) and the polymer compound has a Shore A hardness at 70° C. of between 30 and 85 and a Molt Flow Index (5 kg/190° C.) of less than 20 g/10 min.

The present invention relates to a polymerization process, comprising: a) supplying a feed containing ethylene and at least one alpha-olefin having 3 to 12 carbon atoms in a hydrocarbon solvent to a polymerization reactor, b) contacting the feed of step a) in the reactor with a catalyst to form a reaction mixture containing an ethylene-alpha-olefin co-polymer, c) withdrawing the reaction mixture from the polymerization reactor as a reactor outlet stream which comprises the ethylene-alpha-olefin co-polymer, unreacted monomer and comonomer, catalyst, and hydrocarbon solvent, d) heating the reactor outlet stream to a temperature which is at least 5° C. higher than the temperature of the reaction mixture at the outlet of the reactor for a time period of between 1 and 250 seconds in order to de-activate the polymerization catalyst, and e) separating hydrocarbon solvent, monomer and comonomer from the reactor outlet stream and recycling it back to the polymerization reactor without further purification steps.

The present invention relates to a polymerization process, comprising: a) supplying a feed containing ethylene and at least one alpha-olefin having 3 to 12 carbon atoms in a hydrocarbon solvent to a polymerization reactor, b) contacting the feed of step a) in the reactor with a catalyst to form a reaction mixture containing an ethylene-alpha-olefin co-polymer, c) withdrawing the reaction mixture from the polymerization reactor as a reactor outlet stream which comprises the ethylene-alpha-olefin co-polymer, unreacted monomer and comonomer, catalyst, and hydrocarbon solvent, d) heating the reactor outlet stream to a temperature which is at least 5° C. higher than the temperature of the reaction mixture at the outlet of the reactor for a time period of between 1 and 250 seconds in order to de-activate the polymerization catalyst, and e) separating hydrocarbon solvent, monomer and comonomer from the reactor outlet stream and recycling it back to the polymerization reactor without further purification steps.