Abstract: A gypsum board/intumescent material ceiling board includes a gypsum board and a fire-resistive barrier. A first major surface of the gypsum board is an upper side for abutting framing and a second major surface of the gypsum board is an underside for facing a room interior. The fire-resistive barrier is a layer of intumescent coating material applied to and coextensive with one of the major surfaces of the gypsum board. The intumescent coating material contains expandable graphite and a corrosion inhibitor in sufficient quantities to provide a corrosion inhibiting layer on metal surfaces, such as the surfaces of metal fasteners, with which the intumescent coating material comes in contact. In addition, the intumescent coating material has a pH greater than 7.0 to reduce corrosive properties of the intumescent material and provide a chemical environment conducive to the forming of the corrosion inhibiting layer by the corrosion inhibitor.

Abstract: A method and apparatus for encapsulating a porous article in plastic film without employing supporting molds. The article is deposited onto a lower web and an upper web is moved into overlying position. The edges of the webs are gripped by moving teeth to move the webs and the article in unison. The webs are then pinched together adjacent the article to form an enclosed volume. The film is heated to its fusing temperature and the enclosed volume is evacuated through a tube inserted through the lower web and into the article. The tube is removed and the fused webs are trimmed adjacent the edges of the article, resulting in an encapsulated article.

Abstract: Integral retaining means in an open-ended wrap-around carrier for preventing articles such as bottles from escaping the carrier through the open end. The bottom panel is comprised of inner and outer mechanically connected flaps. The outer bottom panel flap contains a retainer flap at each end connected along a fold line which is generally parallel to the open end edge of the bottom panel. The retainer flaps extend up into the interior of the carrier through openings in the inner bottom panel flap. The retainer flap is folded along converging fold lines so that it forms a retainer finger engaging the outer portions of the end bottles in two adjacent rows of bottles in the carrier.

Abstract: A wrap-around bottle carrier having bottle neck openings comprised of arcuate edges. The arcuate edges engage bottle necks of minimum circumference to hold then in place. Concentric arcuate fold lines located radially outwardly of the openings are connected to the arcuate edges by slits to form flaps which can fold up to permit bottle necks of greater circumference to be received and held in place by the openings. The openings may be located adjacent the side panels of the carrier, in which case slits extending from the arcuate edges of the openings may be located in the side panels.