Varying the loop engageability of fastener element arrays

• US 6,543,099 B1
• Filed: 06/02/2000
• Issued: 04/08/2003
• Est. Priority Date: 06/02/2000
• Status: Expired due to Term

• Current Assignee: Velcro BVBA
• Original Assignee: Velcro Industries BV (Chartwell Industries Ltd)
• Inventors: Schmidt, Richard J., Filion, Scott M.
• Primary Examiner(s): SAKRAN, VICTOR N
• Application Number:
  US09/585,942
• Time in Patent Office: 1,040 Days
• Field of Search: 244/52, 244/42, 244/46, 244/50, 243/06, 243/04
• US Class Current: 24/452
• CPC Class Codes: A44B 18/0049 obtained by moulding processes compression moulding or articles of indefinite length characterised by the shape of the surface B29C43/222; screen moulding B29C67/08
• CPC Class Codes: A44B 18/0061 Male or hook elements A44B18/0053 takes precedence
• CPC Class Codes: A44B 18/0069 Details
• CPC Class Codes: A61F 13/625 characterised by the hook
• CPC Class Codes: Y10T 24/27 including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener]
• CPC Class Codes: Y10T 24/2708 Combined with diverse fastener
• CPC Class Codes: Y10T 24/2742 having filaments of varied shape or size on same mounting surface
• CPC Class Codes: Y10T 24/2775 having opposed structure formed from distinct filaments of diverse shape to those mating therewith
• CPC Class Codes: Y10T 24/2792 having mounting surface and filaments constructed from common piece of material
• CPC Class Codes: Y10T 24/33 having adhesive fastener
• CPC Class Codes: Y10T 428/24017 Hook or barb

Abstract

An easy-to-grip diaper fastener tab has an array of hook-shaped fastener elements arranged in parallel rows, each fastener element including a stem and a crook extending from the stem in a predetermined direction to a distal tip. The array includes a plurality of rows of fastener elements arranged such that, in each row, all of the crooks face in the same direction and parallel to the direction of the row, with the crooks of adjacent rows facing in opposite directions. The longitudinal spacing between opposing tips of adjacent hooks of adjacent rows is greater in a first portion of the array than the longitudinal spacing between opposing tips of adjacent hooks of adjacent rows in a second portion of the array, such that the crooks of the hooks of the first portion are more exposed for engaging loops than the crooks of the hooks of the second portion. Methods and molds for forming such arrays are also provided.

Claims

1. An array of hook-shaped fastener elements arranged in parallel rows, each fastener element including a stem and a crook extending from the stem in a predetermined direction to a distal tip,

the array including a plurality of rows of fastener elements, arranged so that, in each row, all of the crooks face in the same direction and parallel to the direction of the row, and so that the crooks of adjacent rows face in opposite directions;

the longitudinal spacing between opposing tips of adjacent hooks of adjacent rows in a first portion of the array being greater than the longitudinal spacing between opposing tips of adjacent hooks of adjacent rows in a second portion of the array, such that the crooks of the hooks of the first portion are more exposed for engaging loops than the crooks of the hooks of the second portion.

2. The array of claim 1 wherein in the second portion of the array, the crooks of hooks of adjacent rows longitudinally overlap each other to interfere with the ability of the overlapping crooks to engage loop elements.

3. The product of claim 1 further comprising a personal care product.

4. The product of claim 3 wherein the personal care product is a diaper.

5. The product of claim 3 wherein the personal care product is a feminine hygiene product.

6. The product of claim 3 wherein the personal care product is an adult incontinence item.

7. The product of claim 3 wherein the personal care product is a training pant.

8. A fastener product, comprising

(a) a first fastener component comprising a common base and an array of hook-shaped fastener elements arranged in parallel rows on said common base, each fastener element including a stem and a crook extending from the stem in a predetermined direction to a distal tip,

the array including a plurality of rows of fastener elements, arranged so that, in each row, all of the crooks face in the same direction and parallel to the direction of the row, and so that the crooks of adjacent rows face in opposite directions,

the longitudinal spacing between opposing tips of adjacent hooks of adjacent rows in a first portion of the array being greater than the longitudinal spacing between opposing tips of adjacent hooks of adjacent rows in a second portion of the array, such that the crooks of the hooks of the first portion are more exposed for engaging loops than the crooks of the hooks of the second portion;

and

(b) a second fastener element, comprising a common base and a plurality of loops extending from said base for engagement with said hooks.

9. The product of claim 8 wherein the product comprises a strip of fastener tabs.

10. The product of claim 8 wherein the product comprises a strip of fastener tape.

11. A strip of continuously molded fastener tape comprising

a common base and an array of hook-shaped fastener elements arranged in parallel rows on said common base, each fastener element including a stem and a crook extending from the stem in a predetermined direction to a distal tip,

the array including a plurality of rows of fastener elements, arranged so that, in each row, all of the crooks face in the same direction and parallel to the direction of the row, and so that the crooks of adjacent rows face in opposite directions,

the longitudinal spacing between opposing tips of adjacent hooks of adjacent rows in a first portion of the array being greater than the longitudinal spacing between opposing tips of adjacent hooks of adjacent rows in a second portion of the array, such that the crooks of the hooks of the first portion are more exposed for engaging loops than the crooks of the hooks of the second portion.

12. An array of male fastener elements arranged in parallel rows, each fastener element including a stem and a loop-engaging portion extending from the stem,

the array including a plurality of rows of fastener elements;

the longitudinal spacing between loop-engaging portions of opposing pairs of fastener elements of adjacent rows in a first portion of the array being greater than the longitudinal spacing between loop-engaging portions of opposing pairs of fastener elements of adjacent rows in a second portion of the array, such that the loop-engaging portions of the fastener elements of the first portion are more exposed for engaging loops than the loop-engaging portions of the fastener elements of the second portion.