Systems and methods for joining hook fastener structures
Systems and methods for joining two or more pieces of hook fastener tape. In some embodiments, the two or more pieces of tape are spliced together using ultrasonic welding. At least one of the splicing components used to splice the tapes together may be configured so that the component influences the profile of a connecting portion along which the two tapes are welded together. In some cases, at least one of the splicing components may be configured to minimize deformation of the tapes as they are welded together.
1. A method of joining two hook fastener tapes comprising:
providing the two hook fastener tapes, each hook fastener tape comprising a base, a plurality of hooks extending from the base, and a wall extending from the base along a side of the hook fastener tape;
providing a first splicing component;
providing a second splicing component comprising a tape receiving channel with an extended portion, the extended portion comprising a center section between two side sections, wherein the center section projects beyond the two side sections;
positioning the two hook fastener tapes relative to the first and second splicing components such that an overlay section of the two hook fastener tapes aligns with the extended portion;
positioning the overlay section relative to the tape receiving channel such that hooks of the overlay section generally align with the center section of the extended portion and such that the wall of the overly section generally aligns with each side section of the extended portion; and
splicing the two hook fastener tapes at the overlay section using ultrasonic welding to form a welded tape with a welded connection segment that corresponds to the overlay section.
2. The method of claim 1 , further comprising oscillating at least one of the first splicing component and the second splicing component to splice the two hook fastener tapes.
3. The method of claim 1 , further comprising oscillating at least one of the first splicing component and the second splicing component such that the welded connection segment comprises a recessed portion between two non-recessed portions, wherein the recessed portion is recessed relative to the two non-recessed portions.
4. The method of claim 1 , wherein the positioning the two hook fastener tapes relative to the first and second splicing components comprises positioning the two hook fastener tapes so that:
a top surface of each of the two hook fastener tapes faces the second splicing component, wherein a plurality of hooks project from the top surface; and
a generally flat bottom surface of each of the two hook fastener tapes faces the first splicing component.
5. The method of claim 4 , further comprising using at least one positioner to guide the two hook fastener tapes within the tape receiving channel.
6. A method of splicing two strips of hook fastener tape using ultrasonic welding, the ultrasonic welding comprising:
providing the two hook fastener tapes, each hook fastener tape comprising a base, a plurality of hooks extending from the base, and a wall extending from the base along a side of the hook fastener tape;
positioning the two strips of hook fastener tape between a first splicing component and a second splicing component, the second splicing component comprising a tape receiving channel with an extended portion, the extended portion comprising a center section between two side sections, wherein the center section projects beyond the two side sections;
positioning an overlay section of the two hook fastener tapes relative to the tape receiving channel such that the hooks of the overlay section of the two strips generally align with the center section of the extended portion and such that the wall of the overlay section generally aligns with each side section of the extended portion; and
oscillating the first splicing component relative to the second splicing component.
7. The method of claim 6 , wherein the positioning of the two strips of hook fastener tape between the first splicing component and the second splicing component comprises positioning the two strips of hook fastener tape within the tape receiving channel.
8. The method of claim 7 , wherein the positioning the two strips of hook fastener tape within the tape receiving channel comprises positioning the two strips of hook fastener tape such that the two strips of hook fastener tape overlap along the overlay section.
9. The method of claim 6 , wherein the positioning the two hook fastener tapes between the first and second splicing components comprises positioning the two hook fastener tapes so that:
a top surface of each of the two hook fastener tapes faces the second splicing component, wherein a plurality of hooks project from the top surface; and
a generally flat bottom surface of each of the two hook fastener tapes faces a generally flat surface of the first splicing component.
10. The method of claim 7 , further comprising using at least one positioner to help guide the two hook fastener tapes within the tape receiving channel.