A prepreg comprising the following constituent elements (A), (B), and (C), the constituent element (C) being present in a surface layer of the prepreg: Constituent element (A): a reinforcing fiber base material; Constituent element (B): an epoxy resin composition containing a curing agent, the epoxy resin composition being cured within the range of from 90° C. to 140° C. (inclusive); and Constituent element (C): particles of a thermoplastic resin having a melting point or a glass transition temperature within the range of from 90° C. to 140° C. (inclusive).

A biaxially orientated polyester film has a P.sub.L/V.sub.L ratio of 0.3 to 1.2, P.sub.L and V.sub.L representing the average diameter of the convex portions and the average diameter of the concave portions, respectively, that are defined on the basis of a slice level with a height of 0 nm (reference plane) in a roughness curve determined for at least one surface using a three dimensional surface roughness meter, and the convex portions accounting for an area ratio of 30% to 51% of the reference plane. The biaxially oriented polyester film is excellent in travelling property, slitting property, and dimensional stability, and serves, when used for magnetic recording medium production, to provide a high density magnetic recording medium having a smooth magnetic layer, suffering little dimensional change due to variations in environmental parameters such as temperature and humidity or due to storage, and having good electromagnetic conversion characteristics with little dropout.

In the field of decorative floor coverings, decorative panels are known having a MDF (Medium Density Board) or HDF (High Density Board) based core layer on top of which a decorative substrate is attached to provide the panels a desired appearance. The invention relates to a panel, in particular a decorative panel, a floor panel, a ceiling panel or a wall panel. The invention also relates to a floor covering consisting of a plurality of mutually coupled panels.

Provided is a windmill blade, comprising a core material formed of an acrylic resin expanded article and an outer skin covering the core material, in winch the outer skin is formed of a fiber-reinforced resin material including a carbon fiber and a resin, and the acrylic resin expanded article has a specified bending modulus.

A method of making a pre-stretched plastic packaging film comprising co-extruding a top layer, a bottom layer, and a core layer into a multilayer film intermediate product, wherein the top layer and bottom layer comprise at least about 95 wt % polyethylene resin, and the core layer comprises polyethylene resin and filler particles; stretching the multilayer film intermediate product to impart cavitation in the core layer in the area of the filler particles to form a pre-stretched polyethylene-based film; and rolling the pre-stretched polyethylene-based film onto a roller to form a roll of pre-stretched polyethylene-based film. A multilayer pre-stretched plastic packaging film comprising: a core layer sandwiched between a top layer and a bottom layer wherein the top layer and bottom layer comprise at least about 95 wt % polyethylene, and the core layer comprises filler particles having a particle size of 0.1 to 20 μm in a polyethylene-based matrix comprising at least about 95 wt % polyethylene.

A concrete curing blanket includes an absorbent sheet having a wicking layer, super absorbent materials, and a tissue layer, which are laminated together to form the absorbent sheet. The absorbent sheet is sized for being spread over a curing concrete slab. A vapor barrier is bonded to the tissue layer of the absorbent sheet to inhibit evaporation from the concrete curing blanket, and includes a plurality of perforations.

The invention relates to flexible multilayer films comprising a first polymer layer (A), a second polymer layer (B), and a central polymer layer (C), wherein the central polymer layer (C) is situated between the first polymer layer (A) and the second polymer layer (B), and wherein the central polymer layer (C) comprises at least one UV absorber and at least one colorant that, in combination, absorb light in the 175 nm to 525 nm wavelength range. The multilayer film is suitable for producing medical bags having UV and light protection.

The present invention relates to a multilayer film including at least one film surface which has an increased surface roughness achieved by protrusion creating particles. The at least one film surface may have a surface roughness characterized by a coefficient of roughness (CR) of ≥0.02 or a Parker Print Surf roughness of at least 2 μm.

Disclosed are compositions, methods and uses for thin multi-layered films that may include a metallizable skin layer that include polyethylene polymer(s), wherein the metallizable skin layer may be treated one or more times. The multi-layered films include a core layer and a sealant layer, wherein each of these layers includes metallocene-catalyzed, linear, low-density polyethylene. The core layer is located between the metallizable skin layer and the sealant layer. These films may include one or more additives in any of the layers and/or include one or more tie layers. The multi-layered films may be biaxially oriented, have a haze equal to or below 5%, and have an elastic modulus equal to or below 350 N/mm.sup.2. The multi-layered films may also include a metallized layer on the metallizable skin layer, a coated layer on the metallizable skin layer, and/or be laminated to a polyethylene-based polymer, such as polyethylene terephthalate.

The present invention provides an acrylic resin laminate film having excellent bonding properties, as well as an excellent appearance and resistance to water whitening. The present invention is a laminate film provided with a resin layer (I) comprising an acrylic resin composition (A) or a fluororesin composition (B), and a second resin layer (II) comprising a resin composition (C) that contains an acid anhydride copolymer (C-1) and acrylic rubber particles (C-2).