Abstract: A collapsible, reusable, general purpose shipping box is made from an inexpensive polymer composition, and can be mass produced by extrusion or coextrusion. The boxes are extruded or coextruded in an almost wasteless production as endless webs of inner layouts and outer layouts, which are folded into respective configurations with one of the configurations being outer one and another inner one. The enclosure is assembled by inserting the inner configuration into the outer one and snap-connecting the complementary male-female locking elements already extruded into the layouts. An extruded web may be many layouts wide as a given extruder and die allow. The boxes can be easily assembled from substantially flat and rectangular layouts at the point of packaging, either by hand or by using a slightly modified and currently widely used box erection machine, and as easily disassembled for transportation and cleansing at the point of unloading.

Abstract: A collapsible, reusable, general purpose shipping box is made from an inexpensive polymer composition, and can be mass produced by extrusion or coextrusion. The boxes are extruded or coextruded in an almost wasteless production as endless webs of inner layouts and outer layouts, which are folded into respective configurations with one of the configurations being outer one and another inner one. The enclosure is assembled by inserting the inner configuration into the outer one and snap-connecting the complementary male-female locking elements already extruded into the layouts. An extruded web may be many layouts wide as a given extruder and die allow. The boxes can be easily assembled from substantially flat and rectangular layouts at the point of packaging, either by hand or by using a slightly modified and currently widely used box erection machine, and as easily disassembled for transportation and cleansing at the point of unloading.

Abstract: A complete seamless honeycomb structure, comprising a core of cells between two facesheets, either in the form of a flat or curved panel. This structure is extruded in a direction perpendicular to the direction of axes of the cells from all combinations of extrudable and mutually fusible materials and completed in one technological sequence, e.g., without subsequent welding, chemical bonding, gluing and the like assembly operations. The method of manufacturing is characterized by continuously extruding a sheet (so-called "coresheet") which is continually deformed in the direction perpendicular to the direction of extrusion into a core, simultaneously and continuously extruding facesheets and joining them to the honeycomb core while adjoining materials in the zones of connection are still in their mutually fusible state. Thus a seamless honeycomb structure is formed.

Abstract: A multidirectionally stretch-crazed microencapsulated polymer film having a matrix material and microcapsules which are formed in the matrix material in the form of crazes which are filled with an encapsulated substance (30, 30a) and oriented at least in two mutually intersecting directions X and Y. The filled crazes form a net-like structure. The microencapsulated film is produced by stretching the original film under a controlled rate of stretching in two intersecting directions in an environment of a surface-active substance with or, if necessary, without a material to be encapsulated. When stretching is discontinued, the crazes are closed and encapsulate the material.