Abstract: A process for making synthetic resin structures in which the double wall element of a synthetic resin is molded with a channel open on one side of the element and into which a reinforcing body is fitted so that the walls of the channel flank this body. Each wall of the channel is provided with a row of openings, preferably extending in the longitudinal direction of the channel, the openings of each row registering with a respective groove formed in the reinforcement body. A cap or cover is molded over the open side of the channel so that portions of the synthetic resin of the cover can penetrate the openings and the grooves which can have a dovetail cross section.

Abstract: A tubular synthetic-resin body usable as a roadway marker comprises spaced upper and lower tubular parts interconnected by thin webs formed integrally with the upper and lower parts. A middle part of contrasting color lies between these upper and lower parts and has grooves receiving the connecting webs. Such a roadway marker is made by fitting the middle part over a core of a mold, and then injecting synthetic-resin material into the mold around this sleeve so as to form the upper and lower parts and the web.

Abstract: Luffas are subject to disintegration into fibers which are carded and needled to a textile support. The resulting product is impregnated with a synthetic resin, dried and calendared to produce a foil from which, for example, inner soles can be cut or stamped.

Abstract: A cupboard, chest or like article of furniture having a top, front wall, side walls and rear wall, has its top wall formed from a panel of wood composition completely encased in a sheath of synthetic resin which also forms a frame around the periphery of the top and is integrally molded with formations adapted to connect the top to the walls of the article. These formations can include tongues or blades adapted to fit snugly into hollows of the walls and/or spaced-apart lips or flanges adapted to receive a wall between them.

Abstract: A shipping, storage, and/or display box has a plurality of side walls extending upwardly from the box floor. One of these side walls has an upper portion formed between the respective corners with a window within which may fit a panel. A pair of double-axis hinge elements each have first portion journaled in the one wall adjacent the lower edge of the window for pivoting about a first axis and a second portion journaled in the panel for pivoting about a second axis generally parallel to and offset from the first axis. These hinges let the panel lie flat against the lower portion of the respective side when in the open condition, yet ensure that the entire hinge arrangement will lie inside a plane defined by the outer surface of the respective side when the panel is closed.