Abstract: In production of a molded surface fastener with backing, molten resin is extruded to the surface of a die wheel, which has in the surface a multiplicity of engaging-element-forming cavities and, at the same time, the cavities are filled with the molten resin. During that time, the die wheel is rotated to continuously mold a multiplicity of engaging elements on the front surface of the substrate sheet. Meanwhile, the backing sheet is pressed against the rear surface of the substrate sheet on the die wheel by a pressing roller to integrally join the backing sheet and the substrate sheet together at a selected pattern of regions.

Abstract: The invention relates to a female engaging member for a surface fastener carrying engaging elements which has a novel profile and a method of manufacturing a surface fastener which is adapted to continuous manufacturing operation by means of a relatively simple process without requiring serious maintenance efforts. The method will allow to select appropriate engaging force and anti-separation force for the surface fastener. The engaging member for a surface fastener comprises a flat plate-like substrate and a large number of pile-shaped engaging elements arranged on the surface thereof. The pile-shaped engaging elements are made of filaments wound around core threads and thus continuous manufacturing by simple operation is realized. A winding of the filament wound around the core thread has a length greater than that of the outer periphery of the core thread.

Abstract: A molded surface fastener is manufactured by supplying molten resin to the circumferential surface of a die wheel rotating in one way to mold a substrate sheet blank and a multiplicity of substantially straight and inclined engaging element blanks in an integral form, and then pressing distal ends of the engaging element blanks by a heat-molding roller in rotation at the same speed to incline the engaging element blanks further toward the substrate sheet blank and also to melt the distal ends to shape each said distal end into an engaging head projecting in a direction opposite to the direction of inclination of the respective engaging element blank. Each of the resulting engaging elements is composed of a stem rising from the substrate sheet surface with inclination by a predetermined angle (.theta.

Abstract: Molten resin is continuously extruded from an injection die or an extrusion die toward the circumferential surface of a die wheel having in its circumferential surface a multiplicity of hook-element-forming cavities and, at the same time, one or more yarns are introduced between the molten resin and the circumferential surface of the die wheel into an inter-element portion of a substrate sheet between a desired adjacent rows of hook elements in parallel to the hook element rows. The yarns are embedded in and integrally molded with the inter-element portion of the substrate sheet and at the same time, hook elements are molded on the circumferential surface of the die wheel as the hook-element-forming cavities are filled with part of the molten resin.

Abstract: Molten resin is continuously extruded from an injection die or an extrusion die toward the circumferential surface of a die wheel having in its circumferential surface a multiplicity of hook-element-forming cavities and, at the same time, one or more yarns are introduced between the molten resin and the circumferential surface of the die wheel into an inter-element portion of a substrate sheet between a desired adjacent rows of hook elements in parallel to the hook element rows. The yarns are embedded in and integrally molded with the inter-element portion of the substrate sheet and at the same time, hook elements are molded on the circumferential surface of the die wheel as the hook-element-forming cavities are filled with part of the molten resin.

Abstract: A plurality of molded surface fasteners, each having a substrate sheet and a multiplicity of hook elements, are connected to one another via a sheet-like connector embedded in the individual substrate sheets over their entire area.

Abstract: A surface fastener molded of synthetic resin, comprises a substrate sheet, and a multiplicity of hook elements molded on at least one surface of the substrate sheet, each hook element having a hook body having a stem and a curved portion. Each of the hook elements has first and second reinforcing ribs projecting from opposite side surfaces of the hook body. The first reinforcing rib is greater in height than the second reinforcing rib. In the presence of the first and second reinforcing ribs different in height, compression stresses developed in the hook body are dispersed at two or more points when a companion engaging element is removed off the hook element.

Abstract: A molded surface fastener comprises: a substrate sheet; and a multiplicity of engaging elements standing on one surface of the substrate sheet, each of the engaging elements being composed of a stem rising from the one surface of the substrate sheet, and an engaging head projecting from an upper end of the stem for detachably engaging a companion loop. After a surface fastener is manufactured on a die wheel by continuous injection molding as a primary-intermediate surface fastener, a heating and pressing roller disposed downstream of the die wheel presses the engaging head, while heating, to bend the engaging head from the stem and, at the same time, to form a pair of protuberances projecting in opposite directions from opposite side edges of the top of the engaging head perpendicularly with respect to a direction lengthwise of the engaging head.

Abstract: A molded surface fastener comprises: a substrate sheet; and a multiplicity of engaging elements standing on one surface of the substrate sheet, each of the engaging elements being composed of a stem rising from the one surface of the substrate sheet, and an engaging head projecting from an upper end of the stem for detachably engaging a companion loop. After a surface fastener is manufactured on a die wheel by continuous injection molding as a primary-intermediate, a heating and pressing roller disposed downstream of the die wheel presses the engaging head, while heating, to bend the engaging head from the stem and, at the same time, to form a pair of protuberances projecting in opposite directions from opposite side edges of the top of the engaging head perpendicularly with respect to a direction lengthwise of the engaging head.

Abstract: A synthetic resin molded surface fastener comprising: a substrate sheet; and a multiplicity of minute engaging elements molded on a front surface of the substrate sheet for engagement with loops of a companion surface fastener. In the molded surface fastener, each of the engaging elements has a multiple-head structure composed of a single stem standing on the front surface of the substrate sheet, two or more necks branching in different directions from an upper end of the stem, and two or more substantially straight engaging heads bent outwardly in branching directions from respective outer ends of the necks. And each of the engaging heads having on its top a pair of substantially horizontal protuberances projecting perpendicularly to an extending direction of each engaging head, the top having a substantially flat surface, each engaging head having a varying thickness gradually decreasing from its base toward its distal end.

Abstract: A molded surface fastener comprises: a substrate sheet; and a multiplicity of engaging elements standing on one surface of the substrate sheet, each of the engaging elements being composed of a stem rising from the one surface of the substrate sheet, and an engaging head projecting from an upper end of the stem for detachably engaging a companion loop. After a surface fastener is manufactured on a die wheel by continuous injection molding as a primary-intermediate surface fastener, a heating and pressing roller disposed downstream of the die wheel presses the engaging head, while heating, to bend the engaging head from the stem and, at the same time, to form a pair of protuberances projecting in opposite directions from opposite side edges of the top of the engaging head perpendicularly with respect to a direction lengthwise of the engaging head.

Abstract: A molded surface fastener is manufactured by supplying molten resin to the circumferential surface of a die wheel rotating in one way to mold a substrate sheet blank and a multiplicity of substantially straight and inclined engaging element blanks in an integral form, and then pressing distal ends of the engaging element blanks by a heat-molding roller in rotation at the same speed to incline the engaging element blanks further toward the substrate sheet blank and also to melt the distal ends to shape each said distal end into an engaging head projecting in a direction opposite to the direction of inclination of the respective engaging element blank. Each of the resulting engaging elements is composed of a stem rising from the substrate sheet surface with inclination by a predetermined angle (.theta.

Abstract: In a surface fastener, a multiplicity of hook-shape male engaging elements each formed of monofilament, a multiplicity of pile-like female engaging elements each formed of a multifilament, and a multiplicity of cut piles each formed of a set of fibers of a multifilament stand mixedly from a front surface of a woven or knit substrate.

Abstract: Molten resin is continuously extruded from an injection die or an extrusion die toward the circumferential surface of a die wheel having in its circumferential surface a multiplicity of hook-element-forming cavities and, at the same time, one or more yarns are introduced between the molten resin and the circumferential surface of the die wheel into an inter-element portion of a substrate sheet between a desired adjacent rows of hook elements in parallel to the hook element rows. The yarns are embedded in and integrally molded with the inter-element portion of the substrate sheet and at the same time, hook elements are molded on the circumferential surface of the die wheel as the hook-element-forming cavities are filled with part of the molten resin.

Abstract: A high-quality molded surface fastener is manufactured by extruding molten thermoplastic resin, in a predetermined width, from an extrusion nozzle to a circumferential surface of a die wheel having a multiplicity of engaging-element-forming cavities, driving the die wheel for rotation, and molding a multiplicity of engaging elements integrally with a plate-like substrate sheet. At the same time, pseudo elements are molded integrally with the substrate sheet along opposite side edges, using pseudo-element-forming cavities in opposite side circumferential surfaces of the die wheel simultaneously. With the pseudo elements, the molded surface fastener is peeled off the die wheel under a uniform peeling force through the entire width of the substrate sheet. Thus the high-quality surface fastener can be obtained.

Abstract: In a molded surface fastener composed of male and female members, each of hook-shape engaging elements of the male member comprises a stem standing substantially perpendicularly from a flat plate-like base, a hook-shape head extending forwardly from a part of the upper end portion of the stem, and a branch extending from another part of the upper end portion of the stem over the hook-shape head by a predetermined length and terminating in a backwardly bent end.

Abstract: A sheet fastener for fastening a sheet-like article to an attachment having along opposite side edges a pair of generally C-cross-section fitting gutters with confronting openings. The fastener comprises a plate-like substrate having opposite side margins adapted to be fitted in the respective fitting gutters, and a multiplicity of surface-fastener male engaging elements projecting integrally from one surface of the plate-like substrate at its central region extending between the side margins. The plate-like substrate has a thickness substantially equal to the width of each of the fitting gutters, and each side margin has a number of discrete recesses longitudinally spaced at distances.

Abstract: In a molded surface fastener, a hook has vertical multi-step reinforcing ribs on opposite side surfaces of a stem, and it is therefore possible to make the hook-shape engaging portion adequately soft and to increase the rate of engagement with loops. Further, since each reinforcing rib extends to the curve of the hook-shape engaging portion, it is possible to secure a predetermined degree of engaging force, despite the thin and soft hook-shape engaging portion, unlike the simple reinforcing ribs of the conventional art.

Abstract: A plurality of molded surface fasteners, each having a substrate sheet and a multiplicity of hook elements, are connected to one another via a sheet-like connector embedded in the individual substrate sheets over their entire area.

Abstract: A molded surface fastener comprising a substrate sheet, and a multiplicity of engaging elements molded in rows on one surface of said substrate sheet. Each of the engaging elements has a pair of stems standing from the one surface of the substrate sheet, and a pair of hooks extending in opposite directions from distal ends of the stems and formed in a pair of parallel planes perpendicular to the general plane of the substrate sheet on opposite sides of the central line of the pair of stems. When companion loops are disengaged from the engaging element, the individual hooks are angularly moved about the central line of the pair of stems in a horizontal plane independently of each other and, at the same time, are expanded upwardly. As a result, the loops and the engaging element can be disengaged from one another smoothly without any damage.