A flexible sheet of positive temperature coefficient (PTC) material formed of a polymer resin and a conductive filler, the sheet of PTC material having a thickness in a range of 10 μm to 100 μm. A method for forming the flexible sheet of positive temperature coefficient material may include preparing a PTC ink from a polymer resin, a conductive filler, and a solvent, applying the PTC ink to a substrate, pulling a blade over the PTC ink to create a uniformly thick layer of the PTC ink on the substrate, and allowing the PTC ink to dry so that the solvent evaporates and leaves a solid layer of PTC material on the substrate.

A polyolefin composition made from or containing: T1) 70-95 wt %, a polyolefin component containing: a1) from 30 wt % to 70 wt % of a propylene based polymer; and a2) from 30 wt % to 70 wt % of an ethylene based polymer; the sum of a1) and a2), being referred to the total weight of a1) and a2), being 100; and T2) 5-30 wt % of a propylene ethylene copolymer containing from 2.0 wt % to 10.0 wt %; of ethylene derived units and having a melt flow rate (230° C./2.16 kg) ranging from 0.5 to 20.0 g/10 min, and having a fraction soluble in xylene at 25° C. lower than 20 wt %.
the sum of the amount of T1) and T2), being referred to the total weight of T1) and T2), being 100.

The present invention provides a polyester film suitable for use as a sealant, which not only has high heat sealing strength, but also is less liable to adsorb various organic compounds, and has a less shrinkage in heating and high tensile strength. Further, the present invention provides a laminate comprising at least one layer of the polyester film, and a packaging bag including the same. The polyester film which is formed with a polyester resin whose main constituent is ethylene terephthalate. The film has at least one heat sealing layer. The film has a predetermined heat sealing strength, a predetermined difference in reversing heat capacity measured with a temperature modulated DSC, and a predetermined heat shrinkage. Further, the laminate comprises at least one layer of the polyester film, and the packaging bag includes the same.

The present invention provides a polyester film suitable for use as a sealant, which not only has high heat sealing strength, but also is less liable to adsorb various organic compounds, and has a less shrinkage in heating and high tensile strength. Further, the present invention provides a laminate comprising at least one layer of the polyester film, and a packaging bag including the same. The polyester film which is formed with a polyester resin whose main constituent is ethylene terephthalate. The film has at least one heat sealing layer. The film has a predetermined heat sealing strength, a predetermined difference in reversing heat capacity measured with a temperature modulated DSC, and a predetermined heat shrinkage. Further, the laminate comprises at least one layer of the polyester film, and the packaging bag includes the same.

According to one aspect, a composite film may include a substrate, and a protection coating overlying the substrate. The protection coating may include a urethane acrylate 6-functional oligomer, and a urethane acrylate 2-functional oligomer. The protection coating may further include a urethane acrylate oligomer ratio UAC.sub.6/UAC.sub.2 of at least about 0.5 and not greater than about 3, where UAC.sub.6 is equal to the content of the urethane acrylate 6-functional oligomer in wt. % for a total weight of the protection coating and UAC.sub.2 is equal to the content of the urethane acrylate 2-functional oligomer in wt. % for a total dry weight of the protection coating.

According to one aspect, a composite film may include a substrate, and a protection coating overlying the substrate. The protection coating may include a urethane acrylate 6-functional oligomer, and a urethane acrylate 2-functional oligomer. The protection coating may further include a urethane acrylate oligomer ratio UAC.sub.6/UAC.sub.2 of at least about 0.5 and not greater than about 3, where UAC.sub.6 is equal to the content of the urethane acrylate 6-functional oligomer in wt. % for a total weight of the protection coating and UAC.sub.2 is equal to the content of the urethane acrylate 2-functional oligomer in wt. % for a total dry weight of the protection coating.

Provided is a phase difference film formed of a resin containing a polymer having crystallizability. The phase difference film has an NZ factor of less than 1 and an in-plane retardation Re that satisfies 125 nm≤Re≤345 nm. The polymer has a crystallization degree of 15% or more. Alternatively, the polymer is an alicyclic structure-containing polymer being a hydrogenated product of a ring-opening polymer of dicyclopentadiene.

Provided is a phase difference film formed of a resin containing a polymer having crystallizability. The phase difference film has an NZ factor of less than 1 and an in-plane retardation Re that satisfies 125 nm≤Re≤345 nm. The polymer has a crystallization degree of 15% or more. Alternatively, the polymer is an alicyclic structure-containing polymer being a hydrogenated product of a ring-opening polymer of dicyclopentadiene.

The invention relates to a continuous method for removing a solvent from a suspension or solution comprising a dissolved target polymer by integrated drum-drying and extrusion of said suspension or solution comprising the dissolved target polymer. The invention also relates to a plastic waste recycling system for recycling a target polymer. Furthermore, the invention also relates to a polymer material obtained by this recycling method.

The invention relates to a continuous method for removing a solvent from a suspension or solution comprising a dissolved target polymer by integrated drum-drying and extrusion of said suspension or solution comprising the dissolved target polymer. The invention also relates to a plastic waste recycling system for recycling a target polymer. Furthermore, the invention also relates to a polymer material obtained by this recycling method.