A male touch fastener strip includes an elongated base and a field of male fastener elements each having a stem extending from a broad face of the base and a head for engaging fibers. The fastener element stems and broad face of the base together form a unitary mass of resin, such as a resin contain
A male touch fastener strip includes an elongated base and a field of male fastener elements each having a stem extending from a broad face of the base and a head for engaging fibers. The fastener element stems and broad face of the base together form a unitary mass of resin, such as a resin containing a magnetically attractable substance. Wings extend from respective longitudinal edges of the base and define discrete corrugations extending in a series along the fastener strip and forming corresponding undulations in the rear face of the strip along its longitudinal edges. The corrugated wings can also support a foam gasket.
대표청구항▼
1. A male touch fastener strip having a front fastening face and a rear face, the strip comprising: an elongated base;a field of exposed male fastener elements each having a stem extending from the base on the front fastening face of the strip; anda pair of wings, each wing extending from a respecti
1. A male touch fastener strip having a front fastening face and a rear face, the strip comprising: an elongated base;a field of exposed male fastener elements each having a stem extending from the base on the front fastening face of the strip; anda pair of wings, each wing extending from a respective longitudinal edge of the base outboard of the field of fastener elements, and having a rear surface forming a portion of the rear face of the strip; wherein each wing defines discrete corrugations extending in a series along the fastener strip and forming corresponding undulations on its rear surface and along a corresponding longitudinal edge region of the fastener strip,the wings extending along opposite sides of a non-undulating portion of the rear face. 2. The touch fastener strip of claim 1, wherein the corrugations feature a saw tooth profile at outboard edges of the wings. 3. The touch fastener strip of claim 1, wherein each wing carries a respective strip of foam adhered to the wing on a same side of the fastener strip as the fastener elements. 4. The touch fastener strip of claim 3, wherein the strips of foam overlay the corrugations. 5. The touch fastener strip of claim 3, wherein the fastener strip has longitudinal end regions in which the front fastening face of the strip is covered by foam forming, in cooperation with the strips of foam, an end barrier of the fastener strip. 6. The touch fastener strip of claim 1, wherein at least a portion of each undulation extends at least partially rearward of the base. 7. The touch fastener strip of claim 1, wherein the series of the corrugations comprises a frequency of between 4 and 20 corrugation cycles per inch along the fastener strip. 8. The touch fastener strip of claim 1, wherein the wings are each angled, in an unloaded state, toward the rear face of the strip. 9. The touch fastener strip of claim 8, wherein the wings each form a midpoint angle of between about 5 and 80 degrees with respect to the base. 10. The touch fastener strip of claim 1, wherein the corrugations define a corrugation amplitude, at outer edges of the wings, of at least twice a nominal edge thickness of the wings. 11. The touch fastener strip of claim 1, wherein the base is of a material comprising a magnetically attractable substance dispersed throughout a synthetic resin. 12. The touch fastener strip of claim 11, wherein the magnetically attractable substance comprises between about 30 and 40 percent of the material, by weight. 13. The touch fastener strip of claim 11, wherein the wings are formed of the material, the wings and base together forming a contiguous mass of the synthetic resin. 14. The touch fastener strip of claim 1, further comprising longitudinal walls rising from the base on either side of the field of male fastener elements and inboard of the wings. 15. A male touch fastener strip having a front fastening face and a rear face, the strip comprising: an elongated base;a field of exposed male fastener elements each having a stem extending from the base on the front fastening face of the strip; anda pair of wings, each wing extending from a respective longitudinal edge of the base outboard of the field of fastener elements, and having a rear surface forming a portion of the rear face of the strip;wherein each wing carries a respective strip of foam adhered to the wing on a same side of the fastener strip as the fastener elements; andwherein each wing defines discrete corrugations extending in a series along the fastener strip and forming corresponding undulations on its rear surface and along a corresponding longitudinal edge region of the fastener strip. 16. The touch fastener strip of claim 15, wherein the strips of foam overlay the corrugations. 17. The touch fastener strip of claim 15, wherein the fastener strip has longitudinal end regions in which the front fastening face of the strip is covered by foam forming, in cooperation with the strips of foam, an end barrier of the fastener strip. 18. A male touch fastener strip having a front fastening face and a rear face, the strip comprising: an elongated base;a field of exposed male fastener elements each having a stem extending from the base on the front fastening face of the strip; anda pair of wings, each wing extending from a respective longitudinal edge of the base outboard of the field of fastener elements, and having a rear surface forming a portion of the rear face of the strip; wherein each wing defines discrete corrugations extending in a series along the fastener strip and forming corresponding undulations on its rear surface and along a corresponding longitudinal edge region of the fastener strip; andwherein the wings are each angled, in an unloaded state, toward the rear face of the strip.
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