A method of forming a polyisocyanurate foam board includes providing a polyol and adding an isocyanate to the polyol to form a polyisocyanurate foam. A first inner surface of a first facer material is treated with a first flow of hydroxyl containing molecules. A second inner surface of a second facer material is treated with a second flow of hydroxyl containing molecules. The polyisocyanurate foam is coupled to the first treated inner surface and the second treated inner surface such that the polyisocyanurate is sandwiched between the first facer material and the second facer material, thereby exposing opposing outer surfaces of the polyisocyanurate foam to the hydroxyl containing molecules. A density of a medial portion of the polyisocyanurate foam is greater than a density of the polyisocyanurate at the opposing outer surfaces.

A method of forming a polyisocyanurate foam board includes providing a polyol and adding an isocyanate to the polyol to form a polyisocyanurate foam. A first inner surface of a first facer material is treated with a first flow of hydroxyl containing molecules. A second inner surface of a second facer material is treated with a second flow of hydroxyl containing molecules. The polyisocyanurate foam is coupled to the first treated inner surface and the second treated inner surface such that the polyisocyanurate is sandwiched between the first facer material and the second facer material, thereby exposing opposing outer surfaces of the polyisocyanurate foam to the hydroxyl containing molecules. A density of a medial portion of the polyisocyanurate foam is greater than a density of the polyisocyanurate at the opposing outer surfaces.

It is known that panels moulded for structural use can be subject to undesirable levels of shrinkage and this can complicate their end use or a building made from them. It is an object of the invention to go at least some way to addressing this problem. Accordingly there is provided a method of significantly reducing panel shrinkage in the production of a structural building panel. The method involves spraying polyurethane foam onto a rigid open mould such that the foam substantially embeds mesh, which prevents or significantly reduces shrinkage of the polyurethane foam. A skin of polyurea is then sprayed over the polyurethane to enhance structural strength of the panel.

Enclosure parts for portable information handling systems may be made by heat pressing material layers together. The material layers may include outer fiber-reinforced thermoplastic layers and a core thermoplastic layer comprising a plurality of thermoplastic film layers. The core thermoplastic layer may be die cut to create voids that reduce weight of the enclosure part. A finishing layer may be added, along with attachment features.

Enclosure parts for portable information handling systems may be made by heat pressing material layers together. The material layers may include outer fiber-reinforced thermoplastic layers and a core thermoplastic layer comprising a plurality of thermoplastic film layers. The core thermoplastic layer may be die cut to create voids that reduce weight of the enclosure part. A finishing layer may be added, along with attachment features.

A flow body for a vehicle having a flow surface, as well as a skin system attached to the flow surface is proposed. The skin system has a top layer and a foam arrangement positioned between the flow surface and the top layer, wherein the top layer includes an elastic, surface-like material, wherein the foam arrangement includes a first layer of an elastic, compressible open cell foam, wherein the foam arrangement is bonded to the top layer. The skin system has a static shape in an unloaded state, in which the shape defines an outer surface geometry that directly follows the geometry of the respective flow surface, and the skin system has a deflected shape when the flow body is subjected to turbulent air flow. The deflected shape at least temporarily compresses the foam arrangement.

A vehicle seat backrest having a body, a cover layer designed to be placed at the back of the body and covering at least a portion of the body, a storage apparatus defining a storage volume over a portion of the cover layer, and a fixation device for attaching the storage apparatus onto the cover layer. The fixation device includes at least one fixation support and at least one pin. The cover layer is overmolded onto the at least one fixation support. The at least one pin mates with the at least one fixation support and the storage apparatus so as to attach the storage apparatus to the cover layer.

A vehicle seat backrest having a body, a cover layer designed to be placed at the back of the body and covering at least a portion of the body, a storage apparatus defining a storage volume over a portion of the cover layer, and a fixation device for attaching the storage apparatus onto the cover layer. The fixation device includes at least one fixation support and at least one pin. The cover layer is overmolded onto the at least one fixation support. The at least one pin mates with the at least one fixation support and the storage apparatus so as to attach the storage apparatus to the cover layer.

The present disclosure relates to adhesive article that include a first, stretch releasable adhesive and patterned adhesive elements on, within, or partially embedded in a surface of the adhesive. The adhesive elements can act as spacers between the adhesive surface and the mounting surface to prevent full contact and wet out of the first adhesive, whereby the article can be removed from the wall and placed at a new location without damage to the wall surface or the article. Once the final location is selected, the separation created by the engineered elements can be overcome by applying sufficient pressure; the first adhesive can contact and adhere more permanently to the wall. Thus, a stretch releasable adhesive articles of the present disclosure can move freely relative to the desired mounting surface, while developing additional tack and holding power after sufficient pressure is applied.

The present invention discloses a multilayer composite rubber-plastic foam insulation material and a preparation method thereof. The composite rubber-plastic foam insulation material includes a two-layer structure; the two-layer structure includes an insulation layer and a first functional layer; the insulation layer and the first functional layer are both made of a rubber-plastic foam material; the first functional layer and the insulation layer are integrally molded by blending extrusion and vulcanization foaming, and the first functional layer and the insulation layer form an integral structure. The multilayer composite rubber-plastic foam insulation material provided by the present invention adopts a vulcanization foaming integral molding process, and not only ensures the thermal insulation property of the insulation layer, but also gives the functional layer corresponding functions by selecting different functional polymers, thereby satisfying a variety of personalized needs in engineering applications.