The invention relates to a method and an apparatus for the production of a corrugated cardboard product. The apparatus comprises a first one-sided machine and a second one-sided machine which are provided in each case with a press-down belt and with a first and a second grooving roller respectively. The first and the second grooving roller are designed for embossing a wave profile onto a first and a second paper web respectively. The press-down belts serve, together with the respective grooving rollers, for connecting the first and the second paper webs in each case to a non-corrugated web for the production of a first and a second single-flute corrugated cardboard web respectively. The first one-sided machine is equipped with a first oblique guide roller, the axis of rotation of which is inclined at a vertical inclination angle between side margins of the first paper web.

Sheet-like composite parts are manufactured by: a) providing a substantially planar arrangement (A, B, A′) comprising a core layer (B) comprising a a fleece material made of fleece thermoplastic fibers and reinforcement fibers, sandwiched between a pair of skin layers (A, A′), each comprising a skin thermoplastic and optionally reinforcement fibers, one face of the core layer being adjacent and substantially parallel to a skin layer and a second face of the core layer being adjacent and substantially parallel to the other skin layer, b) heating and pressing the sandwich arrangement (A,B,A′) followed by cooling, thereby obtaining the composite part, wherein the compression strength of the composite part is improved with a core layer (B) which is a Z-oriented core layer having reinforcement fibers that are predominantly oriented in a direction (Z) perpendicular to the first and second faces, produced by multiple folding.

Sheet-like composite parts are manufactured by: a) providing a substantially planar arrangement (A, B, A′) comprising a core layer (B) comprising a fleece material made of fleece thermoplastic fibers and reinforcement fibers, sandwiched between a pair of skin layers (A, A′), each comprising a skin thermoplastic and optionally reinforcement fibers, one face of the core layer being adjacent and substantially parallel to a skin layer and a second face of the core layer being adjacent and substantially parallel to the other skin layer, b) heating and pressing the sandwich arrangement (A,B,A′) followed by cooling, thereby obtaining the composite part, wherein the compression strength of the composite part is improved with a core layer (B) which is a Z-oriented core layer having reinforcement fibers that are predominantly oriented in a direction (Z) perpendicular to the first and second faces, produced by multiple folding.

The present invention aims to provide an interlayer film for a laminated glass which includes two or more resin layers laminated together and which has excellent deaeration properties in the manufacturing process of a laminated glass and prevents ghosting. The present invention also aims to provide a laminated glass comprising the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass which includes two or more resin layers laminated together and has many minute recesses and many minute protrusions on at least one surface thereof. The recesses have a groove shape with a continuous bottom. The recesses are formed in a regular manner, and recesses adjacent to each other being parallel. Recesses adjacent to each other are spaced less than 750 m.

The invention relates to a method and an apparatus for the production of a corrugated cardboard product. The apparatus comprises a first single facer and a second single facer which are provided in each case with a press-down belt and with a first and a second grooving roller respectively. The first and the second grooving roller are designed for embossing a wave profile onto a first and a second paper web respectively. The press-down belts, together with the respective grooving rollers, for connecting the first and the second paper webs in each case to a non-corrugated web for the production of a first and a second single-flute corrugated cardboard web respectively. The first single facer is equipped with a first oblique guide roller, the axis of rotation of which is inclined at a vertical inclination angle between side margins of the first paper web.

The invention relates to a method and an apparatus for the production of a corrugated cardboard product. The apparatus comprises a first single facer and a second single facer which are provided in each case with a press-down belt and with a first and a second grooving roller respectively. The first and the second grooving roller are designed for embossing a wave profile onto a first and a second paper web respectively. The press-down belts, together with the respective grooving rollers, for connecting the first and the second paper webs in each case to a non-corrugated web for the production of a first and a second single-flute corrugated cardboard web respectively. The first single facer is equipped with a first oblique guide roller, the axis of rotation of which is inclined at a vertical inclination angle between side margins of the first paper web.

A structural batten provides a longitudinally extending first layer having a plurality of passages extending between opposing sides of the first layer and transverse to the longitudinal extent of the first layer. A longitudinally extending solid body layer is attached to the first layer along the first layer's longitudinal extent.

A plate-shaped chemical heat storage comprising a substrate composed of a net made of metal and a heat storage material composition supported on the substrate, wherein the heat storage material composition comprises at least one selected from the group consisting of magnesium hydroxide or oxide, strontium hydroxide or oxide, barium hydroxide or oxide, calcium hydroxide or oxide, and calcium sulfate, and optionally at least one selected from the group consisting of titanium dioxide, silicon dioxide, alumina silicate fiber, E-glass fiber and cellulose.

A spacer structure for a sandwich construction, formed from a material web which is provided with a plurality of cuts and which has a material web plane as a first plane, wherein, by forming the material web, at least one support platform is formed in portions which is spaced at a distance from the first plane and is arranged in a second plane. Spacing elements run along a direction of extent (E) from the first plane into the second plane in the transition zone from the first plane into the second plane and thus the spacing elements space the first plane apart from the support platform, the spacing elements having a twist about the direction of extent thereof along the direction of extent thereof (E), the twist being formed by the shaping of the material web being performed as bending.