Fastener stringer and slide fastener provided with same

Patent metadata

Field	Value
Publication number	US-10238187-B2
Application number	US-201415506385-A
Country	US
Kind code	B2
Filing date	Dec 25, 2014
Priority date	Aug 27, 2014
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A fastener stringer includes a row of elements on which cured coating film is formed at sites where it is difficult to be coated by a roll coating method, preferably over the entire exposed surface, without incorporating any conductive wire in a fastener tape. A fastener stringer includes a row of elements and a fastener tape, at least one side edge of the fastener tape having insulation properties, the row of the elements being attached to the one side edge of the fastener tape, wherein each element includes a pair of leg portions and a head portion, the head portion having an engaging region for engaging with an opposing element when constructing a fastener chain, and wherein cured coating film is formed at least at a center portion in a front and back direction of the fastener tape on an end surface of the head portions.

First claim

What is claimed is:

1. A fastener stringer comprising a row of elements and a fastener tape, at least one side edge of the fastener tape having insulation properties, the row of the elements being attached to the one side edge of the fastener tape, wherein each element comprises a pair of leg portions for holding the fastener tape from front and back sides; and a head portion connecting each leg portion while straddling the one side edge of the fastener tape, the head portion having an engaging region for engaging with an opposing element when constructing a fastener chain; and wherein cured coating film is formed in 50% or more of a total number of the elements at least at a center portion in a front and back direction of the fastener tape on an end surface of the head portion.

2. The fastener stringer according to claim 1 , wherein the head portion of each element has an engaging convex portion and an engaging concave portion for engaging with the opposing element when constructing the fastener chain, wherein the engaging convex portion is formed so as to protrude toward one side in an element arranging direction, the engaging concave portion is formed on the other side opposite to the engaging convex portion in the element arranging direction, and the cured coating film is formed in 50% or more of the total number of the elements at least on the engaging concave portion.

3. The fastener stringer according to claim 1 , wherein the cured coating film is formed on an entire conductive exposed surface of each element.

4. The fastener stringer according to claim 1 , wherein, in each element, a maximum thickness difference of the cured coating film between top surface centers of the both leg portions is within 2 μm.

5. The fastener stringer according to claim 1 , wherein, when measuring a thickness of the cured coating film at a top surface center of each leg portion in all the elements of the fastener stringer, a difference between maximum and minimum values of the thickness of the cured coating film is within 10 μm.

6. The fastener stringer according to claim 1 , wherein, when measuring a thickness of the cured coating film at a top surface center of each leg portion in all the elements of the fastener stringer, a standard deviation of the thickness of the cured coating film is within 3 μm.

7. The fastener stringer according to claim 1 , wherein, when measuring a thickness of the cured coating film at a top surface center of each leg portion in all the elements of the fastener stringer, an average value of the thickness of the cured coating film is from 5 to 15 μm.

8. The fastener stringer according to claim 1 , wherein, when measuring a thickness of the cured coating film at a top surface center of each leg portion in all the elements of the fastener stringer, a coefficient of variation of the thickness of the cured coating film is 0.3 or less.

9. The fastener stringer according claim 1 , wherein the cured coating film comprises a resin component of one or more thermosetting resins selected from polyester-based resin, acrylic-based resin and fluorine-based resin.

10. The fastener stringer according to claim 1 , wherein the cured coating film contains a pigment and/or a dye.

11. A fastener chain comprising the fastener stringer according to claim 1 and a second fastener stringer, in which the row of elements of the fastener stringer is engaged with a row of elements of the second fastener stringer.

12. A slide fastener comprising the fastener stringer according to claim 1 .

13. An article comprising the slide fastener according to claim 12 .

14. A method for electrodeposition-coating a row of elements attached to a fastener tape, comprising steps of:
1) preparing a fastener stringer comprising the row of the elements and the fastener tape, at least one side edge of the fastener tape having insulation properties, the row of the elements having conductivity at least on their exposed surface and being attached to the one side edge of the fastener tape, or preparing a fastener chain in which the rows of the elements of a pair of the fastener stringers are engaged with each other;
2) sequentially immersing the row of the elements in a positively or negatively charged aqueous coating material bath while conveying the fastener stringer or the fastener chain; and
3) forming cured coating film on the elements by bringing the elements immersed in the aqueous coating material bath into contact with an electrode having a charge opposite to that of the aqueous coating material bath.

15. The method according to claim 14 , further comprising, after the step 3), the step 4) of water-washing and removing the aqueous coating material adhered to the fastener tape.

16. The method according to claim 14 , further comprising, after the step 3), the step 5) of baking the coating film to cure the coating film.

Assignees

• Ykk Corp

Inventors

• Yamamoto Syoso
• Goto Hiroshi
• Mizuno Tatsuo

Classifications

• A44B19/42 Primary

  Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00 {(attaching closure devices, e.g. slide fasteners, to bags B31B70/813; making package opening by applying or incorporating profile strips, e.g. for reclosable bags B65B61/188)} · CPC title

• A44B19/34

  Stringer tapes (A44B19/40 takes precedence); Flaps secured to stringers for covering the interlocking members (A44B19/32 takes precedence {; setting slide or glide fastener elements on garments A41H37/06}) · CPC title

• A44B19/403

  Connection of separate interlocking members · CPC title

• A44B19/06 Primary

  with substantially rectangular members having interlocking projections and pieces · CPC title

• A44C27/006

  Metallic coatings · CPC title