This invention provides gypsum wallboards with a unique microstructure where the walls between voids are enhanced in thickness and strength to substantially improve the strength and handling properties of the wallboards. A method of making lightweight gypsum wallboards is also provided.

This invention provides gypsum wallboards with a unique microstructure where the walls between voids are enhanced in thickness and strength to substantially improve the strength and handling properties of the wallboards. A method of making lightweight gypsum wallboards is also provided.

A sound insulation flooring material according to the present invention in which a heat resistance, sound insulation, and adhesion are improved is implemented by sequentially stacking a plurality of layers, a first balance layer, a second balance layer, a primer layer, a PE foam layer, and a PE release paper layer. In this case, the primer layer includes a first composition, a second composition, and a curing agent, and the first composition includes a resin, propanol, 1-methoxy-2-propanol, propyl acetate, isopropanol, butanone, and water.

A sound insulation flooring material according to the present invention in which a heat resistance, sound insulation, and adhesion are improved is implemented by sequentially stacking a plurality of layers, a first balance layer, a second balance layer, a primer layer, a PE foam layer, and a PE release paper layer. In this case, the primer layer includes a first composition, a second composition, and a curing agent, and the first composition includes a resin, propanol, 1-methoxy-2-propanol, propyl acetate, isopropanol, butanone, and water.

A method of using a self-stick insulation. The method includes providing a piece of insulation product with an adhesive coating. The adhesive coating includes polystyrene-maleic anhydride (SMA) and/or polyacrylic acid (PAA); an alcohol amine; and at least one of a polyvinyl alcohol and a starch. The adhesive coating is then activated with liquid water. Once the adhesive coating is active, the insulation product is attached to a surface with the adhesive coating.

A method of using a self-stick insulation. The method includes providing a piece of insulation product with an adhesive coating. The adhesive coating includes polystyrene-maleic anhydride (SMA) and/or polyacrylic acid (PAA); an alcohol amine; and at least one of a polyvinyl alcohol and a starch. The adhesive coating is then activated with liquid water. Once the adhesive coating is active, the insulation product is attached to a surface with the adhesive coating.

An environmentally-regulated portable musical instrument case is provided which can insulate the musical instrument from external temperature and humidity changes. The case has an internal cavity designed to hold the musical instrument. The walls of the cavity are designed to reduce thermal transfer between the internal cavity and the surrounding environment. A temperature regulating apparatus actively or passively further controls the temperature of the internal cavity while a humidity control device controls the humidity.

An environmentally-regulated portable musical instrument case is provided which can insulate the musical instrument from external temperature and humidity changes. The case has an internal cavity designed to hold the musical instrument. The walls of the cavity are designed to reduce thermal transfer between the internal cavity and the surrounding environment. A temperature regulating apparatus actively or passively further controls the temperature of the internal cavity while a humidity control device controls the humidity.

The disclosure provides a heat insulation composite board and a manufacturing method thereof. The heat insulation composite board includes at least one heat insulation layer, at least one medium layer and at least one outer surface layer, wherein the heat insulation layer and the medium layer are joined into a whole in a physical manner; and the outer surface layer and the medium layer are joined into a whole in a chemical manner. According to the present disclosure, the heat insulation composite board can be produced in a simple physical joint manner and is high in impact resistance, tensile strength and stiffness, and simple in production process, and has low production cost and high production efficiency.

A vacuum insulation assembly for an appliance includes a plurality of panels that define a cavity. Each of the plurality of panels includes an inner surface. A port opening is defined by one of the plurality of panels and is defined in communication with the cavity. A vacuum insulation material is positioned within the cavity. A stiffening material is coupled to the inner surface of one or more of the plurality of panels. The stiffening material includes a polymer layer configured to adhere to the inner surface when the stiffening material is heated. A mesh layer is positioned over the polymer layer.