This specification presents sheets including graphitic materials, including sandwich structures, thermoformed or wet-formed single layer or multilayer structures of graphitic materials, and methods of forming a layer of graphitic material. In accordance with one aspect, the specification presents a multi-layer structure comprising a core layer having a core density between 0.01 and 1 g/cm.sup.3; and a skin layer covering the core layer, the skin layer having at least 10% by weight of a graphitic material, the graphitic material having one or more of graphene oxide, reduced graphene oxide, graphene, graphite oxide, reduced graphite oxide and graphite, the skin layer having a skin density of between 0.5 and 2 g/cm.sup.3 , a thickness ratio of the skin layer to the core layer being of between 1:1000 and 1:1.

This specification presents sheets including graphitic materials, including sandwich structures, thermoformed or wet-formed single layer or multilayer structures of graphitic materials, and methods of forming a layer of graphitic material. In accordance with one aspect, the specification presents a multi-layer structure comprising a core layer having a core density between 0.01 and 1 g/cm.sup.3; and a skin layer covering the core layer, the skin layer having at least 10% by weight of a graphitic material, the graphitic material having one or more of graphene oxide, reduced graphene oxide, graphene, graphite oxide, reduced graphite oxide and graphite, the skin layer having a skin density of between 0.5 and 2 g/cm.sup.3 , a thickness ratio of the skin layer to the core layer being of between 1:1000 and 1:1.

Embodiments provide a method for producing a multilayer film, the method including: (A) a step for continuously coextruding from a T die (3) a molten film (4) of a multilayer film in which a first acrylic resin layer (α1), an aromatic polycarbonate resin layer (β), and a second acrylic resin layer (α2) are directly laminated in the stated order using a coextrusion apparatus; (B) a step for feeding and pressing the molten film of the multilayer film between a first mirror surface body (5) that rotates or revolves and a second mirror surface body (6) that rotates or revolves so that the first acrylic resin layer (α1) is disposed on the first-mirror-surface-body side; and (C) a step for holding the pressed multilayer film against the first mirror surface body and sends the pressed multilayer film to the subsequent third mirror surface body (8) that rotates or revolves, where TR1 (surface temperature of first mirror surface body), TR2 (surface temperature of second mirror surface body), Tα1 (glass transition temperature of first acrylic resin), Tα2 (glass transition temperature of second acrylic resin), and Tβ (glass transition temperature of aromatic polycarbonate resin) satisfy a prescribed relationship.

The present invention relates to a porous sheet comprising cellulose fibers having an average fiber diameter ranging from 20 to 500 nm; cut fibers having an average fiber diameter ranging from 1.5 to 20 μm; and a hydrophilic polymer binder, wherein an amount of the cut fibers is 1% by weight or more and 80% by weight or less based on the total weight of the cellulose fibers and the cut fibers, and an amount of the hydrophilic polymer binder is 5 parts by weight or more and 30 parts by weight or less with respect to 100 parts by weight of the total weight of the cellulose fibers and the cut fibers. The porous sheet of the present invention can exhibit a superior strength (in particular, both tear strength and tensile strength), and exhibits a superior performance as a separator for an electrochemical device.

Provided is a method for producing an optical film using simultaneous multilayer coating application, the method being capable of reducing the incidence of coating failure in an optical film. The present invention relates to a method for producing an optical film having at least two or more optical functional layers formed on a base material, the method including: a loss modulus checking step of checking the loss moduli of coating liquids capable of forming the respective optical functional layers by measuring dynamic viscoelasticity; and a coating application step of performing simultaneous multilayer coating application of the coating liquids capable of forming the respective optical functional layers on the base material.

Provided is a method for producing an optical film using simultaneous multilayer coating application, the method being capable of reducing the incidence of coating failure in an optical film. The present invention relates to a method for producing an optical film having at least two or more optical functional layers formed on a base material, the method including: a loss modulus checking step of checking the loss moduli of coating liquids capable of forming the respective optical functional layers by measuring dynamic viscoelasticity; and a coating application step of performing simultaneous multilayer coating application of the coating liquids capable of forming the respective optical functional layers on the base material.

Methods and apparatus are provided for the production of thermoplastic composite sheets whose fibers are other than perpendicular to the longitudinal axis of the sheet and which are capable of being slit into sheets, strips and/or tapes of custom widths.

There is provided a method of manufacturing a multi-layered film structure on a handling substrate. The film structure may hold a core film layer, which may hold an active ingredient. There is also provided method for manufacturing multi-layered microstructures. The microstructures may be manufactured based on a provided multi-layered film structure having a core film layer holding an active ingredient. The active ingredient may be a drug, and the microstructures may be used for drug delivery.

A warming cabinet can include an enclosure, a heater for heating the enclosure, and a package disposed within the enclosure. A method of disinfecting skin can include removing a package from a storage environment having an above-ambient temperature, removing a wipe from the package, and applying the wipe to skin.

A film is described comprising a first film layer having a Tg ranging from 30° C. to 60° C. The first film layer comprises a (meth)acrylic polymer and polyvinyl acetal polymer composition. The film further comprises a second layer proximate the first film layer. The second layer is different than the first film layer. The second may be a cured (meth)acrylic polymer film or coating; a backing such as thermoplastic polymer, woven or nonwoven fabrics, metal foils, paper, foams; or a coverfilm such as a fluoropolymer.