초록 ▼

A molded plastic hook fastener component for hook and loop fastening has individual raised bases distributed over a common area, each carrying an individual hook element while a laterally contiguous portion of each raised base raises the lower bound for the loop region beneath the fastener head. Dur

A molded plastic hook fastener component for hook and loop fastening has individual raised bases distributed over a common area, each carrying an individual hook element while a laterally contiguous portion of each raised base raises the lower bound for the loop region beneath the fastener head. During molding, fastener elements are pulled from their mold cavities through cavity portions of the raised bases.

대표청구항 ▼

What is claimed is: 1. A hook component for hook and loop fastening, comprising a laterally-extending common portion of thermoplastic resin having a pattern of individual, substantially raised bases distributed over an area of the common portion and comprised of thermoplastic resin integral with re

What is claimed is: 1. A hook component for hook and loop fastening, comprising a laterally-extending common portion of thermoplastic resin having a pattern of individual, substantially raised bases distributed over an area of the common portion and comprised of thermoplastic resin integral with resin of the common portion, each raised base carrying an individual fastener element and being spaced laterally from other raised bases and their fastener elements such that loop space extending to the common portion substantially surrounds each raised base and its fastener element, each fastener element formed of thermoplastic resin integral with resin of the respective raised base and comprising an upwardly projecting stem and a head that is joined to the stem, the head extending laterally beyond the stem in at least one direction to provide a loop-engageable overhanging portion that ends in a tip, wherein the lower end of the stem and the respective raised base are portions of a single, seamless mass of resin, a substantial, laterally contiguous portion of an upper surface of the raised base lying beneath the overhanging portion of the respective head, forming a lower bound to a loop region lying immediately beneath the overhanging portion of the fastener element, wherein the upper surface of each raised base defines at least a slight depression adjacent the respective stem. 2. The hook component of claim 1 in which the height of each raised base relative to the common portion is between about 40 percent and 100 percent of the height of the respective fastener element above its raised base. 3. The hook component of claim 1 in which the distance between the tip of each overhanging head portion and a nearest portion of the upper surface of each respective raised base is less than about 50 percent of the elevation of the tip relative to the common portion that lies laterally beyond the raised base. 4. The hook component of claim 1 in which the surfaces of each fastener element and each raised base are shaped to position a part of the loop region laterally inwardly of the tip toward the stem. 5. The hook component of claim 4 in which the surface of each stem exposed to the loop region is inclined no more than about 30 degrees to perpendicular to the lateral direction, locating the stem in a substantially laterally recessed relation to the tip of the head portion. 6. The hook component of claim 1 in which the upper surface of each raised base is inclined downwardly in the direction of the respective stem. 7. The hook component of claim 6 in which the upper surface of each raised base is inclined downwardly in the direction of the respective stem with an angle of inclination between about 10 and 60 degrees relative to the lateral direction. 8. The hook component of claim 1 in which each raised base and the stem supported by it are of molded thermoplastic resin. 9. The hook component of claim 8 in which the head and stem of each fastener element are of molded thermoplastic resin. 10. The hook component of claim 1 in which, as a result of being molded in a mold cavity closed on opposite sides by planar surfaces, the stem of each fastener element and the respective raised base have co-planar side surfaces. 11. The hook component of claim 1 in which overhanging head portions of each fastener element project substantially in two opposite lateral directions and in which each overhanging portion overlies a portion of the respective raised base, raised upper surfaces of these portions of the raised base forming lower bounds to loop regions lying below the overhanging head portions of the fastener element. 12. The hook component of claim 11 in which the fastener elements are substantially of molded palm tree form. 13. The hook component of claim 11 in which, in the plane of the overhanging head portion of each fastener element, the width of the respective raised base is at least 60 percent wider than the width of the stem at the raised base. 14. The hook component of claim 1 in which each fastener element has only one overhanging head portion. 15. The hook component of claim 14 comprised of adjacent rows of the fastener elements, the fastener elements of one row having overhanging head portions all of which project over portions of their respective raised bases in one lateral direction and the fastener elements of an adjacent row having overhanging head portions all of which project over portions of their respective raised bases in the opposite lateral direction. 16. The hook component of claim 14 in which, in the plane of the overhanging head portion of each fastener element, the width of the respective raised base is at least 45 percent wider than the width of the stem at the raised base. 17. The hook component of claim 1 having a loop material-penetrating profile defined substantially entirely by the heads of the fastener elements, the area of the heads occupying between about 10 percent and 25 percent of the respective area of the hook component. 18. A hook component for hook and loop fastening, comprising a laterally-extending common portion of thermoplastic resin, a pattern of individual, substantially raised bases distributed over an area of the common portion and comprised of thermoplastic resin integral with resin of the common portion, each raised base carrying an individual fastener element and being spaced laterally from other raised bases and their fastener elements such that loop space extending to the common portion substantially surrounds each raised base and its fastener element, each fastener element formed of thermoplastic resin integral with resin of the respective raised base and comprising an upwardly projecting stem and a head that is joined to the stem, the head extending laterally beyond the stem in at least one direction to provide a loop-engageable overhanging portion that ends in a tip, the lower end of the stem joined to one portion of the respective raised base such that the lower portion of the stem and the respective raised base form portions of a single, seamless mass of resin, a substantial, laterally contiguous portion of the raised base lying beneath the overhanging portion of the respective head, forming a lower bound to a loop region lying immediately beneath the overhanging portion of the fastener element, the height of the raised base relative to the common portion being between about 40 and 100 percent of the height of the respective fastener element above its raised base, the surfaces of the fastener element and the raised base being shaped to position a part of the loop region laterally inwardly of the tip toward the stem, overhanging head portions of the fastener element projecting substantially in two opposite lateral directions, each overhanging head portion overlying a portion of the respective raised base, raised upper surfaces of these portions of the raised base forming lower bounds to loop regions lying below the overhanging head portions of the fastener element and, in the plane of the overhanging head portion of the fastener element, the width of the respective raised base being at least 60 percent wider than the width of the stem at the raised base. 19. A hook component for hook and loop fastening, comprising a laterally-extending common portion of thermoplastic resin, a pattern of individual, substantially raised bases distributed over an area of the common portion and comprised of thermoplastic resin integral with resin of the common portion, each raised base carrying an individual fastener element and being spaced laterally from other raised bases and their fastener elements such that loop space extending to the common portion substantially surrounds each raised base and its fastener element, each fastener element formed of thermoplastic resin integral with resin of the respective raised base and comprising an upwardly projecting stem and a head that is joined to the stem, the head extending laterally beyond the stem in at least one direction to provide a loop-engageable overhanging portion that ends in a tip, the lower end of the stem joined at a root region to one portion of the respective raised base such that the lower portion of the stem and the respective raised base form portions of a single, seamless mass of resin, a substantial, laterally contiguous portion of the raised base lying beneath the overhanging portion of the respective head, forming a lower bound to a loop region lying immediately beneath the overhanging portion of the fastener element, the height of the raised base relative to the common portion being between about 40 and 100 percent of the height of the respective fastener element above its raised base, the surfaces of the fastener element and the raised base being shaped to position a part of the loop region laterally inwardly of the tip toward the stem, the fastener element having only one overhanging head portion, and in the plane of the overhanging head portion of the fastener element, the width of the respective raised base being at least 45% wider than the width of the stem at the raised base. 20. The hook component of claim 1, 18 or 19, in which the fastener elements are less than about 0.015 inch in height above their respective raised bases. 21. The hook component of claim 1, 18 or 19, in which the fastener elements are less than about 0.010 inch in height above their respective raised bases. 22. The hook component of claim 1, 18 or 19 in which a lateral extremity of a laterally contiguous portion of the raised base lies a distance from the stem of the fastener no greater than 175 percent of the distance at which the tip of the overhanging head portion lies from the stem. 23. A hook component for hook and loop fastening, comprising a laterally-extending common portion with a pattern of individual, substantially raised bases distributed over an area of the common portion, each raised base carrying an individual fastener element and being spaced laterally from other raised bases and their fastener elements such that loop space extending to the common portion substantially surrounds each raised base and its fastener element, each fastener element comprising an upwardly projecting stem and a head that is joined to the stem, the head extending laterally beyond the stem in at least one direction to provide a loop-engageable overhanging portion that ends in a tip, the lower end of the stem joined to one portion of the respective raised base such that the lower portion of the stem and the respective raised base form portions of a single, seamless mass of resin, a substantial, laterally contiguous portion of the raised base lying beneath the overhanging portion of the respective head, forming a lower bound to a loop region lying immediately beneath the overhanging portion of the fastener element, the contiguous portion of the raised base extending laterally beyond both the stem and the overlying head portion of its respective fastener element to a lateral extremity, the lateral extremity of the raised base lying a distance from the stem of the fastener no greater than 175 percent of the distance at which the tip of the overlying head portion lies from the stem. 24. The hook component of claim 1, 18, or 19 in which lateral extremities of the raised bases extend laterally beyond the tips of the overhanging head portions of their respective fastener elements. 25. A hook component for hook and loop fastening, comprising a laterally-extending common portion of thermoplastic resin having a pattern of individual, substantially raised bases distributed over an area of the common portion and comprised of thermoplastic resin integral with resin of the common portion, each raised base carrying an individual fastener element and being spaced laterally from other raised bases and their fastener elements such that loop space extending to the common portion substantially surrounds each raised base and its fastener element, each fastener element formed of thermoplastic resin integral with resin of the respective raised base and comprising an upwardly projecting stem and a head that is joined to the stem, the head extending laterally beyond the stem in at least one direction to provide a loop-engageable overhanging portion that ends in a tip, wherein the lower end of the stem and the respective raised base are portions of a single, seamless mass of resin, a substantial, laterally contiguous portion of an upper surface of the raised base lying beneath the overhanging portion of the respective head, forming a lower bound to a loop region lying immediately beneath the overhanging portion of the fastener element, the surfaces of each fastener element and each raised base being shaped to position a part of each loop region laterally inwardly of the respective tip toward the respective stem. 26. The hook component of claim 25 in which the surface of each stem exposed to the loop region is inclined no more than about 30 degrees to perpendicular to the lateral direction, locating the stem in a substantially laterally recessed relation to the tip of the respective head portion. 27. A hook component for hook and loop fastening, comprising a laterally-extending common portion of thermoplastic resin having a pattern of individual, substantially raised bases distributed over an area of the common portion and comprised of thermoplastic resin integral with resin of the common portion, each raised base carrying an individual fastener element and being spaced laterally from other raised bases and their fastener elements such that loop space extending to the common portion substantially surrounds each raised base and its fastener element, each fastener element formed of thermoplastic resin integral with resin of the respective raised base and comprising an upwardly projecting stem and a head that is joined to the stem, the head extending laterally beyond the stem in at least one direction to provide a loop-engageable overhanging portion that ends in a tip, wherein the lower end of the stem and the respective raised base are portions of a single, seamless mass of resin, a substantial, laterally contiguous portion of an upper surface of the raised base lying beneath the overhanging portion of the respective head, forming a lower bound to a loop region lying immediately beneath the overhanging portion of the fastener element, with the upper surface of each raised base inclined downwardly in the direction of the respective stem. 28. The hook component of claim 27 in which the upper surface of each raised base is inclined downwardly in the direction of the respective stem with an angle of inclination between about 10 and 60 degrees relative to the lateral direction.