Heat sealable food packaging films, methods for the production thereof, and food packages comprising heat sealable food packaging films are provided. The heat sealable food packaging film includes a humidity-dependent permeable film having a moisture vapor transmission rate that increases with an increase in relative humidity (RH). An outer coating comprises a coating material on at least one surface of the humidity-dependent permeable film. The coating material is selected from a nanoclay dispersed in a poly-vinylidene chloride (PVdC) polymer or a stretchable urethane polymer, a stretchable acrylic polymer, or a combination of stretchable urethane polymer and stretchable acrylic polymer. The coating material may further comprise an anti-blocking agent. The heat sealable food packaging film is biaxially oriented.

Provided is an optical film having high contrast and excellent visibility. The optical film includes: a transparent screen; and a transparent reflecting layer that is disposed on one main surface of the transparent screen, in which in the transparent screen, a ratio T.sub.15/T.sub.30 of a light amount T.sub.15 of transmitted light at an angle of 15 degrees with respect to a normal direction of the main surface to a light amount T.sub.30 of transmitted light at an angle of 30 degrees with respect to the normal direction of the main surface is 2.0 or higher, and the ratio R.sub.15/R.sub.30 of the light amount R.sub.15 of reflected light at an angle of 15 degrees with respect to the normal direction of the main surface to the light amount R.sub.30 of reflected light at an angle of 30 degrees with respect to the normal direction of the main surface is 2.0 or lower.

The present disclosure relates to a battery cell tray, which is a tray configured to accommodate a plurality of cylinder type battery cells in a storage of a first packaging member, including a first tray member having a plate type structure in which a plurality of first recessed portions surrounding one side end portions of the battery cells are formed; and a second tray member having a plate type structure in which a plurality of second recessed portions surrounding the other side end portions facing the one side end portions of the battery cells are formed, and the first and second tray members includes a volatile rust inhibitor which is vaporized at room temperature to form a rust-proofing film on surfaces of the battery cells.

A cellulose ester composition is provided comprising at least one cellulose ester and at least one impact modifier and optionally at least one plasticizer. Processes for producing the cellulose ester compositions as well as articles made using these compositions, such as eyeglass frames, automotive parts, and toys are also provided.

A system and method for controlling curl in multi-layer webs. The method can include providing a coated web, curing the coating to form a multi-layer web, and stretching the web during curing of the coating. Some coatings shrink at least partially when cured such that curing the coating induces a strain in the multi-layer web. Stretching the web occurs during curing to induce an opposing strain that at least partially counteracts the strain induced by curing to form a multi-layer web having a desired curvature. The system can include a curing section configured to cure the coating, and can further include a web stretching section, which can be located proximate the curing section and can be substantially coincident with the curing section, such that the web is stretched while the coating is cured.

The present invention refers to a new multilayered material, reinforced with fibres and having an improved adhesion between the layers throughout its entire structure; to a process for its preparation and to the articles made with such material, intended to be exposed to adverse conditions, such as strong winds, stretching, temperature changes, such as for example sails for boat.

A synthetic polymer film (34A) having a surface which has a plurality of raised portions (34Ap), (34Bp), wherein a two-dimensional size of the plurality of raised portions (34Ap), (34Bp) is in a range of more than 20 nm and less than 500 nm when viewed in a normal direction of the synthetic polymer film (34A), (34B), the surface having a microbicidal effect, and a concentration of a nitrogen element included in the surface is not less than 0.7 at %.

A fire-stopping material for use in sandwich panels is provided, wherein the fire-stopping material comprises a resilient, porous material at least partially impregnated with an intumescent agent. A panel for an internal wall and an internal wall are also provided, comprising the fire-stopping material disposed between two substantially parallel boards, such as plaster boards. A method of providing a service penetration through an internal wall is also provided.

By use of composite tungsten oxide particles having high heat ray-shielding effect while mainly composed of polyvinyl acetal resin, a heat ray-shielding particle is provided, having excellent optical performance and high weather resistance, which includes composite tungsten oxide particle expressed by general formula M.sub.yWO.sub.z (wherein M is one or more kinds of element selected from Cs, Rb, K, Tl, In, Ba, Li, Ca, Sr, Fe, Sn, Al, and Cu, satisfying 0.1y0.5, 2.2z3.0) and having hexagonal crystal structure; and at least one of a dispersant having acrylic backbone, having amino group as functional group, and having thermal decomposition temperature of 200 C. or more, and dispersant having acrylic backbone, having hydroxyl group or carboxyl group as functional group, and having thermal decomposition temperature of 200 C. or more, wherein content of organic solvent having boiling point of 120 C. or less is 5 mass % or less.

The present disclosure relates to a composition for manufacturing a polyimide film and a polyimide film for a flexible metal clad laminate manufactured using the same. According to an aspect of the present disclosure, there is provided a composition for manufacturing a polyimide film, the composition comprising: an aromatic dianhydride; a diamine; and a curing catalyst, wherein the curing catalyst includes one or more selected from the group consisting of an imidazole-based compound, a quinolone-based compound, and a quinoline-based compound.