Abstract: The invention is generally directed to a foldable door and sidewall, and more particularly, to a foldable door and sidewall suitable for use with tents, awnings, restaurant patio shielding, and other protective enclosures. The invention is also directed to methods for retrofitting a protective enclosure (e.g., frame structure associated with a collapsible tent) with a foldable door or sidewall, as well as to kits for accomplishing the same.

Abstract: The present invention relates to a method for purifying water, in particular ground water, under anaerobic conditions, using a membrane filtration unit, wherein the following steps are carried out: 1) connecting the membrane filtration unit (8) to a rinsing unit (11); then 2) passing a rinsing agent from the rinsing unit (11) through the membrane filtration unit (8) so as to create anaerobic conditions in the membrane filtration unit (8); and 3) passing the water to be purified through the membrane filtration unit (8), in which anaerobic conditions have thus been created in step 2), wherein the connection (12) between the membrane filtration unit (8) and the rinsing unit (11) is then shut off so that the anaerobic conditions in the membrane filtration unit (8) obtained in step 2) are maintained while the water to be purified is passed through said membrane filtration unit (8).

Abstract: There is disclosed a method for adhering a flexible sheet (such as a fibrous or resinous sheet) to a semi-rigid thermoplastic resinous sheet (such as a polycarbonate or acrylic sheet). In one embodiment, the method comprises the steps of contacting an edge surface of a flexible fibrous sheet with a thermosetting resin and allowing the resin to cure to yield a unified surface, applying an adhesive along of an edge surface of the semi-rigid sheet to yield an adhesive surface and contacting the unified surface of the flexible fibrous sheet with the adhesive surface of the semi-rigid sheet to adhere the flexible fibrous sheet to the semi-rigid sheet. The products made by this method are suitable for a variety of applications, including use as boat and dwelling enclosures.

Abstract: There is disclosed a method for adhering a flexible sheet (such as a fibrous or resinous sheet) to a semi-rigid thermoplastic resinous sheet (such as a polycarbonate or acrylic sheet). In one embodiment, the method comprises the steps of contacting an edge surface of a flexible fibrous sheet with a thermosetting resin and allowing the resin to cure to yield a unified surface, applying an adhesive along of an edge surface of the semi-rigid sheet to yield an adhesive surface and contacting the unified surface of the flexible fibrous sheet with the adhesive surface of the semi-rigid sheet to adhere the flexible fibrous sheet to the semi-rigid sheet. The products made by this method are suitable for a variety of applications, including use as boat and dwelling enclosures.