CN117281333A - Zipper fastener - Google Patents

Abstract

A slide fastener (1) of the present invention comprises a pair of first and second fastener tapes (10, 20), a first element row (50) and a second element row (60). When the first fastener element row and the second fastener element row (50, 60) are mutually meshed, one end (10 a) in the width direction of the first fastener tape (10) and one end (20 a) in the width direction of the second fastener tape (20) are respectively bent into an arc shape and are closely contacted with each other.

Description

Zipper fastener

Technical Field

The present invention relates to a slide fastener.

Background

As a type of slide fastener, generally known are: a normal type of slide fastener in which the element row is attached so as to be visible on the outside (front side) of the article, a reverse type of slide fastener in which the element row is attached to the inside (back side) of the article so as to be difficult to see (so-called reverse slide fastener), a concealed type of slide fastener in which the side edge portions of the left and right fastener tapes are turned back in a U-shape in the width direction thereof and the element row is attached to the turned back tape portion (so-called concealed slide fastener), and the like.

The reverse-attached slide fastener is suitable for various articles such as clothing, shoes, bags, and furniture, and in recent years, is also used for seat covers for various seats such as automobiles, trains, and airplanes, because of its concealment property and the advantage of not interfering with the design of the articles. An example of such a reverse slide fastener is disclosed in japanese patent application laid-open No. 2009-56076 (patent document 1).

Fig. 8 is a cross-sectional view showing the reverse slide fastener of patent document 1. As shown in fig. 8, the reverse-attached slide fastener 100 disclosed in patent document 1 includes a pair of right and left fastener stringers 102, 102 and a slider 101 capable of opening and closing the pair of right and left fastener stringers 102, 102.

The slider 101 has a slider body 110 and a pull tab 120. The slider body 110 has: the upper blade 111, a lower blade 112 disposed in parallel and apart from the upper blade 111, guide posts (not shown in fig. 8) connecting the front ends of the upper and lower blades 111, 112, a door-shaped tab mounting post 114 integrally formed with the surface (upper surface) of the upper blade 111, and left and right flanges 115 erected from left and right side edges of the rear portion side of the lower blade 112 toward the upper blade 111.

The pair of right and left fastener stringers 102, 102 are formed by sewing a pair of opposite tape side edges of the pair of right and left fastener stringers 104, 104 by inserting a core thread 106 into a coil-shaped element row 103 by a sewing thread 105.

[ Prior Art literature ]

[ patent literature ]

Patent document 1: japanese patent laid-open No. 2009-56076

Disclosure of Invention

[ problem to be solved by the invention ]

In general, in a reverse-attached slide fastener, a gap (so-called a middle partition) is formed between a pair of right and left fastener tapes. In fact, even in the reverse slide fastener 100 of patent document 1 shown in fig. 8, a gap S is formed between the pair of right and left fastener tapes 104, 104.

Therefore, when an external force (so-called lateral pulling) acts on the pair of right and left fastener tapes 104, 104 in the direction away from each other, the user views the reverse fastener 100 from the front side (upper side in fig. 8), the element row 103 can be visually recognized through the gap S. Such a decrease in concealment of the element row 103 is not preferable in that the design of an article using the reverse slide fastener 100, particularly an article such as a car seat, a bag, or furniture, in which importance is attached to the beauty, is deteriorated.

The present invention has been made in view of the above-described problems, and an object thereof is to provide a slide fastener having excellent concealment of element rows and further excellent appearance.

[ means of solving the problems ]

In order to solve the above problems, the present invention is realized by the following configuration.

[1] A zipper, comprising:

a pair of first and second fastener tapes having a long strip shape and having a first main surface and a second main surface opposite to the first main surface, respectively;

a first fastener element row provided on the first main surface of one end portion in the width direction of the first fastener tape; and

a second element row provided on the first main surface of one end portion in the width direction of the second fastener tape, and in the fastener,

When the first element row and the second element row are engaged with each other, one end portion in the width direction of the first fastener tape and one end portion in the width direction of the second fastener tape are respectively bent into an arc shape and are closely adhered to each other.

[2] The slide fastener according to [1], wherein,

when the first element row and the second element row are engaged with each other, the second main surface of the one end portion in the width direction of the first fastener tape and the second main surface of the one end portion in the width direction of the second fastener tape are in close contact with each other.

[3] The slide fastener according to [1] or [2], wherein,

when the first element row and the second element row are engaged with each other, a first space is defined between the first main surface of one end portion in the width direction of the first fastener tape and the first element row,

a second space is defined between the first main surface of one end portion in the width direction of the second fastener tape and the second element row.

[4] The slide fastener according to [1] or [2], wherein,

the first fastener tape and the second fastener tape are fabrics or knits.

[5] The slide fastener according to [1] or [2], wherein,

the first fastener tape has one end in the width direction extending further toward the second fastener tape side than the center of engagement of the first fastener element row and the second fastener element row, and the second fastener tape has one end in the width direction extending further toward the first fastener tape side than the center of engagement, whereby when the first fastener element row and the second fastener element row are engaged with each other, the one end in the width direction of the first fastener tape and the one end in the width direction of the second fastener tape are bent into an arc shape to be bonded to each other.

[6] The slide fastener according to item [5], wherein,

the first fastener tape has one end surface in the width direction arranged on the same plane as the one end surface in the width direction of the first fastener element row, and the second fastener tape has one end surface in the width direction arranged on the same plane as the one end surface in the width direction of the second fastener element row, whereby when the first fastener element row and the second fastener element row are engaged with each other, the one end portion in the width direction of the first fastener tape and the one end portion in the width direction of the second fastener tape are bent into an arc shape and are closely adhered to each other.

[7] The slide fastener according to [1] or [2], wherein it comprises:

a first water-blocking layer disposed on the second major surface of the first fastener tape; and

a second water-blocking layer disposed on the second major surface of the second fastener strip.

[8] The slide fastener according to item [7], wherein,

when the first element row and the second element row are engaged with each other, one end portion in the width direction of the first water blocking layer and one end portion in the width direction of the second water blocking layer are bent into an arc shape and are closely contacted with each other.

[9] The slide fastener according to item [8], wherein,

the first water stop layer and the second water stop layer respectively comprise: a first water-stopping main surface in contact with the second main surfaces of the first fastener tape and the second fastener tape; and a second water-stopping main surface which is the opposite side of the first water-stopping main surface,

When the first element row and the second element row are engaged with each other, the second water-stop main surface of the one end portion in the width direction of the first water-stop layer and the second water-stop main surface of the one end portion in the width direction of the second water-stop layer are in close contact with each other.

[ Effect of the invention ]

According to the slide fastener of the present invention, when the first element row and the second element row are engaged with each other, the width-direction one end portion of the first fastener tape and the width-direction one end portion of the second fastener tape are respectively pressed and bent into an arc shape to be closely adhered to each other. Therefore, the gap (intermediate partition) between the first fastener tape and the second fastener tape disappears, the concealment of the element row is excellent, and the appearance is excellent.

Drawings

Fig. 1 is a surface view of a first embodiment of the slide fastener of the present invention.

Fig. 2 is a cross-sectional view of a main portion of the slide fastener shown in fig. 1, and is a view showing a state in which a first element row and a second element row are engaged.

Fig. 3 is a cross-sectional view of a main portion of the slide fastener shown in fig. 1, and is a view showing a state in which a first element row and a second element row are separated.

Fig. 4 is a cross-sectional view of a main portion of a slide fastener according to a modification of the first embodiment, and is a view showing a state in which a first element row and a second element row are engaged.

Fig. 5 is a cross-sectional view of a main portion of the slide fastener according to the second embodiment, and is a view showing a state in which the first element row and the second element row are engaged.

Fig. 6 is a cross-sectional view of a main portion of the slide fastener according to the second embodiment, and is a view showing a state in which the first element row and the second element row are separated.

Fig. 7 is a cross-sectional view of a main portion of a slide fastener according to a modification of the second embodiment, and is a view showing a state in which a first element row and a second element row are engaged.

Fig. 8 is a cross-sectional view showing the reverse slide fastener of patent document 1.

[ description of symbols ]

1: zipper fastener

3. 5: zipper tooth chain

10: first zipper tape

10a: one end in the width direction

10b: one end face in the width direction

11: back (first major surface)

13: surface (second main surface)

20: second zipper tape

20a: one end in the width direction

20b: one end face in the width direction

21: back (first major surface)

23: surface (second main surface)

31: tooth element

31a: engagement head

31b: first foot part

31c: second foot part

31d: connecting part

31e: one end face in the width direction

31f: one end face in the width direction

32: core wire

33: suture thread

40: pull head

41: main body

42: pull tab mounting portion

43: pull tab

50: first element row

60: second element row

70: first water-stop film (first water-stop layer)

70a: one end in the width direction

70b: one end face in the width direction

71: back surface (first water-stopping main surface)

73: surface (second water-stopping main surface)

80: second water-stop film (second water-stop layer)

80a: one end in the width direction

80b: one end face in the width direction

81: back surface (first water-stopping main surface)

83: surface (second water-stopping main surface)

100: reverse zipper

101: pull head

102: zipper tooth chain

103: tooth row

104: zipper strip

105: sewing wire

106: core wire

110: slider body

111: upper wing plate

112: lower wing plate

114: pull tab mounting post

115: flange

120: pull tab

O: engagement center

O1, O2: position of

S: gap of

S1, S2: plane surface

T1: a first space

T2: second space

Detailed Description

Hereinafter, a slide fastener according to each embodiment of the present invention will be described in detail with reference to the drawings.

In the present specification, the term "vertical direction" refers to a sliding direction of the slider, and refers to a longitudinal direction of the slide fastener, and in particular, a direction in which the slider slides so as to engage the left and right element rows is referred to as "upper" and a direction in which the slider slides so as to disengage the left and right element rows is referred to as "lower".

The "right-left direction" of the slide fastener is a direction in which a pair of element rows are arranged, and is a direction perpendicular to the sliding direction of the slider, or in other words, the width direction of the slide fastener.

The "forward and reverse direction" of the slide fastener and the upper stopper is a direction orthogonal to the up-down direction and the right-left direction, and may be in other words, a thickness direction of the fastener tape or a height direction of the element row.

(first embodiment)

Fig. 1 is a surface view of a first embodiment of the slide fastener of the present invention. Fig. 2 is a cross-sectional view of a main portion of the slide fastener shown in fig. 1, and is a view showing a state in which a first element row and a second element row are engaged. Fig. 3 is a cross-sectional view of a main portion of the slide fastener shown in fig. 1, and is a view showing a state in which a first element row and a second element row are separated.

As shown in fig. 1 to 3, the slide fastener 1 of the present embodiment includes a pair of right and left fastener stringers 3, 5, and a slider 40 capable of opening and closing the pair of right and left fastener stringers 3, 5.

The pair of right and left fastener stringers 3, 5 includes: the pair of left and right first fastener tapes 10 and second fastener tapes 20 are elongated and have a back surface 11 and a back surface 21 (first main surface) and a surface 13 and a surface 23 (second main surface) on opposite sides of the back surface 11 and the back surface 21, respectively; the first fastener element row 50 provided on the back surface 11 of the one end portion 10a (right end portion in fig. 2) of the first fastener tape 10 in the width direction; and a second element row 60 provided on the back surface 21 of the width-direction one end portion 20a (left end portion in fig. 2) of the second fastener tape 20. Hereinafter, the side of the first fastener tape 10 and the second fastener tape 20 in the width direction on which the element rows are provided is defined as one end side in the width direction, and the side on which the element rows are not provided is defined as the other end side in the width direction.

The first fastener tape 10 and the second fastener tape 20 are woven or knitted fabrics including polyester threads and the like, and are excellent in flexibility. The first fastener tape 10 and the second fastener tape 20 may be nonwoven fabrics.

The slider 40 engages and disengages the pair of left and right first element rows 50 with and from the second element row 60. The slider 40 includes a main body 41, a tab attachment portion 42 provided on a surface of the main body 41, and a tab 43 attached to the tab attachment portion 42. Then, by moving the slider 40 upward as shown in fig. 2, the pair of left and right first element rows 50 are engaged with the second element row 60, and by moving the slider 40 downward as shown in fig. 3, the pair of left and right first element rows 50 are separated from the second element row 60. The slide fastener 1 may include an upper stopper or a lower stopper, not shown. In addition, an opening member having a seat bar and a seat body may be provided instead of the lower stopper.

The first element row 50 and the second element row 60 are coil-shaped fastener element rows formed by winding synthetic resin monofilaments in a predetermined direction, and have a plurality of elements 31. Further, with respect to the first element row 50 and the second element row 60, the core thread 32 is inserted into the plurality of elements 31, and sewn to the back surface 11 of the one end portion 10a in the width direction of the first fastener tape 10 and the back surface 21 of the one end portion 20a in the width direction of the second fastener tape 20 by the double-stitch-bonded stitch 33. Examples of the synthetic resin material for the monofilaments include polyester and nylon.

The element 31 includes: an engagement head 31a which engages with and disengages from the element 31 of the other side; a first leg portion 31b extending from a front end portion of the engaging head portion 31a to the other end side in the width direction and contacting the first fastener tape 10 and the second fastener tape 20; the second leg portion 31c extending from the back side end portion of the engaging head portion 31a to the other end side in the width direction and not contacting the first fastener tape 10 and the second fastener tape 20; and a connecting portion 31d connecting the outer end portion in the width direction of the first leg portion 31b with the other end portion in the width direction of the second leg portion 31c of the adjacent fastener element 31. Accordingly, the first leg portion 31b and the second leg portion 31c are formed to protrude from the engagement head portion 31a and extend in parallel.

Fig. 2 shows the engagement center O of the first element row 50 and the second element row 60. The engagement center O is a center position of the fastener element 31 when the fastener element 31 is engaged with each other, and coincides with the widthwise center of the slide fastener 1. Fig. 3 shows positions at which the first element row 50 and the second element row 60 are engaged with each other, as the engagement center O, with O1 and O2. The positions O1 and O2 are located on the other end side in the width direction than the engagement head 31a of the element 31.

As shown in fig. 3, in a state in which the first element row 50 and the second element row 60 are separated, the width-direction one end portion 10a of the first fastener tape 10 and the width-direction one end portion 20a of the second fastener tape 20 are separated from each other in the width direction.

In addition, in the upper part of fig. 1, in a state where the first element row 50 and the second element row 60 are separated, the width direction one end portion 10a of the first fastener tape 10 and the width direction one end portion 20a of the second fastener tape 20 are shown as being bent in an arcuate shape, which means that when they are separated after a certain period of time has elapsed in a state where the first element row 50 and the second element row 60 are engaged, a trace of the bent state remains. When a predetermined period of time elapses while the first element row 50 and the second element row 60 are separated from each other, the trace of buckling is eliminated, and the width-direction one end portion 10a of the first fastener tape 10 and the width-direction one end portion 20a of the second fastener tape 20 may have substantially planar shapes as shown in fig. 3.

As shown in fig. 3, in a state where the first element row 50 and the second element row 60 are separated, the first width-direction end portion 10a of the first fastener tape 10 extends further toward the second fastener tape 20 side (width-direction end side) than the position O1 serving as the engagement center O of the first element row 50 and the second element row 60, and the first width-direction end portion 20a of the second fastener tape 20 extends further toward the first fastener tape 10 side (width-direction end side) than the position O2 serving as the engagement center O. That is, when the first element row 50 and the second element row 60 are engaged as shown in fig. 2, the first fastener tape 10 and the second fastener tape 20 are designed to overlap with the engagement center O. By disposing the first fastener tape 10 and the second fastener tape 20 and the first element row 50 and the second element row 60 as described above, the first fastener tape 10 and the second fastener tape 20 can be bent into a curved shape and brought into close contact with each other when the first element row 50 and the second element row 60 are engaged as described below.

More specifically, in a state in which the first element row 50 is separated from the second element row 60, the first fastener tape 10 has its width-direction end surface 10b disposed on the second fastener tape 20 side (width-direction end side) than the position O1 serving as the engagement center O, and the second fastener tape 20 has its width-direction end surface 20b disposed on the first fastener tape 10 side (width-direction end side) than the position O2 serving as the engagement center O.

The first fastener tape 10 may be disposed at a position overlapping at least a part of the coupling head 31a of the fastener element 31 in the width direction at the one end surface 10b in the width direction, may be disposed on the same plane S1 as the one end surface 31e in the width direction of the coupling head 31a (i.e., the one end surface in the width direction of the first fastener element row 50), or may be disposed on the second fastener tape 20 side of the coupling head 31 a. In the example of fig. 2, one end surface 10b in the width direction of the first fastener tape 10 is arranged on the same plane S1 as one end surface in the width direction of the first element row 50.

The width-direction one end surface 20b of the second fastener tape 20 may be disposed at a position overlapping at least a part of the coupling head 31a of the fastener element 31 in the width direction, may be disposed on the same plane S2 as the width-direction one end surface 31f of the coupling head 31a (i.e., the width-direction one end surface of the second fastener element row 60) in the width direction, or may be disposed on the first fastener tape 10 side of the coupling head 31 a. In the example of fig. 2, the width-direction one end surface 20b of the second fastener tape 20 and the width-direction one end surface of the second element row 60 are arranged on the same plane S2 in the width direction.

In this way, in a state in which the first fastener element row 50 and the second fastener element row 60 are separated, the first fastener tape 10 and the second fastener tape 20 can be more reliably pressed into an arcuate shape and brought into close contact with each other when the first fastener tape 10 and the second fastener tape 20 are engaged with each other as described later, by disposing the one end surface 10b in the width direction of the first fastener tape 10 and the one end surface in the width direction of the first fastener element row 50 on the same plane S1 and disposing the one end surface 20b in the width direction of the second fastener tape 20 and the one end surface in the width direction of the second fastener element row 60 on the same plane S2. The reason is that the following configuration relation is: the first fastener tape 10 and the second fastener tape 20 are not prevented from being engaged with each other by the first element row 50 and the second element row 60 by the width-direction one end portion 10a and the width-direction one end portion 20a, and the first fastener tape 10 and the second fastener tape 20 are not easily broken by the pressure bonding. The term "disposed on the same plane" does not necessarily have to be disposed entirely on the same plane, and includes a case where the width-direction one end surfaces 10b and 20b of the first fastener tape 10 and the second fastener tape 20 are substantially on the same plane in a range that coincides with a range from the start point of the taper of the engaging head 31a to the end point of the taper, in consideration of the taper of the engaging head 31 a.

By moving the slider 40 upward from the state in which the first element row 50 and the second element row 60 are separated as shown in fig. 3, the first element row 50 and the second element row 60 are engaged as shown in fig. 2. At this time, the first end portion 10a in the width direction of the first fastener tape 10 extends further toward the second fastener tape 20 side (width direction one end side) than the position O1 which becomes the engagement center O of the first element row 50 and the second element row 60, and the first end portion 20a in the width direction of the second fastener tape 20 extends further toward the first fastener tape 10 side (width direction one end side) than the position O2 which becomes the engagement center O, so the first end portion 10a in the width direction and the first end portion 20a in the width direction are pressed against each other to be deformed, and are buckled into an arc shape protruding toward the front side to be closely contacted with each other. In this case, as shown in fig. 2, the first fastener tape 10 and the second fastener tape 20 may be sewn to the first fastener tape 10 and the second fastener tape 20, and the stitches 33 on the width-direction one end 10a and the width-direction one end 20a of the first fastener tape 10 and the second fastener tape 20 may slightly extend and float with buckling of the first fastener tape 10 and the second fastener tape 20.

In this way, when the first fastener element row 50 and the second fastener element row 60 are mutually engaged, the first fastener tape 10 and the second fastener tape 20 are closely adhered to each other, and therefore, a gap (so-called intermediate portion) is not formed between the first fastener tape 10 and the second fastener tape 20 as in the conventional reverse-attached slide fastener. Therefore, when the user views the slide fastener 1 from the front side, the first element row 50 and the second element row 60 cannot be visually recognized, and the appearance is excellent. The slide fastener 1 is particularly suitable for articles with high visual aesthetics such as automobile seats, bags, furniture and the like.

Further, since the first fastener tape 10 and the second fastener tape 20 are pressed and bent into the shape of an arc and are closely adhered to each other, even when a force (so-called lateral pulling) in a direction away from each other acts on the first fastener tape 10 and the second fastener tape 20, the state of close adhesion to each other can be maintained by only slightly weakening the degree of buckling in a range where the engagement gap between the fastener elements 31, 31 is canceled out, and therefore a good appearance of the slide fastener 1 can be maintained.

In addition, a waterproof agent may be attached to the first fastener tape 10 and the second fastener tape 20. By attaching the waterproofing agent, the waterproof performance can be imparted to the slide fastener 1. Examples of the water repellent include fluorine-based compounds, silicone-based compounds, acrylic-based water repellents, silicone composite-based water repellents, paraffin-based compounds, vinylurea-based compounds, zirconium-based compounds, fatty acid amide-based compounds, methylolamide-based compounds, alkylurea-based compounds, fatty acid amide-based water repellents, and the like.

The step of attaching the waterproofing agent to the first fastener tape 10 and the second fastener tape 20 may be performed by any step, for example, by winding the fastener stringers 3 and the fastener stringers 5 around the peripheral surfaces of guide rollers, not shown, and continuously passing them through a container filled with the waterproofing agent, thereby impregnating the fastener stringers with the waterproofing agent. In the above-described process, the waterproof agent is efficiently applied to the entire surfaces of the first fastener tape 10 and the second fastener tape 20, the first element row 50 and the second element row 60, the core thread 32, and the seam 33 constituting the fastener stringers 3, 5. Next, the fastener stringers 3, 5 are lifted from the container and continuously passed through the drying chamber, whereby the waterproofing agent applied to the entire surfaces of the fastener stringers 3, 5 is dried first. Thereafter, the fastener stringers 3 and 5 after the completion of the drying of the waterproofing agent are further continuously passed through a heat treatment chamber, whereby the dried waterproofing agent is heat-treated. In the heat treatment, the first fastener tape 10 and the second fastener tape 20, the first element row 50 and the second element row 60, the core thread 32, and all the base materials of the thread 33 are welded and attached to the waterproof agent.

In this way, when the first fastener tape 10 and the second fastener tape 20 are subjected to the waterproof treatment, the slide fastener 1 can be used as a waterproof slide fastener. In particular, in the present embodiment, since the first fastener tape 10 and the second fastener tape 20 are curved to be closely contacted to each other when the first fastener element row 50 and the second fastener element row 60 are mutually engaged, a gap (intermediate partition) is not formed between the first fastener tape 10 and the second fastener tape 20, and thus, the entry of liquid from the intermediate partition as in the conventional art can be suppressed.

As shown in fig. 2, when the first element row 50 and the second element row 60 are engaged with each other, the first fastener tape 10 and the second fastener tape 20 have one end surface 10b in the width direction and one end surface 20b in the width direction facing the element 31 side (back side) and are in contact with the first element row 50 and the second element row 60. Further, the surface 13 of the first widthwise end portion 10a of the first fastener tape 10 and the surface 23 of the first widthwise end portion 20a of the second fastener tape 20 are closely adhered to each other at the engagement center O. As described above, since the surfaces 13 and 23 of the first and second fastener tapes 10 and 20 at the first and second ends 10a and 20a are in close contact with each other, the thickness of the fastener 1 can be suppressed and the sliding resistance of the slider 40 can be reduced, compared with the case where the back surfaces 11 and 21 are in close contact with each other (the case where the first ends 10a and 20a are buckled in the opposite direction to the present embodiment). Further, in the case where the back surface 11 and the back surface 21 are in close contact with each other, the first fastener tape 10 and the second fastener tape 20 have the width-direction one end surface 10b and the width-direction one end surface 20b facing the front side, and the width-direction one end 10a and the width-direction one end 20a serving as the tape edges are convex toward the front surface, and thus the touch feeling of the front surface is deteriorated.

As shown in fig. 2, when the first fastener element row 50 and the second fastener element row 60 are engaged with each other, the back surfaces 11, 21 of the first fastener tape 10 and the second fastener tape 20 and the width-direction one end surface 10b and the width-direction one end surface 20b are separated from the first fastener element row 50 and the second fastener element row 60 (fastener element 31) in the front-back direction, and a first space T1 and a second space T2 are respectively formed by dividing the first fastener tape and the second fastener tape.

By providing the first space T1 and the second space T2 as described above, the first fastener tape 10 and the second fastener tape 20 can be easily buckled when the first element row 50 and the second element row 60 are combined by the slider 40. Further, as the first space T1 and the second space T2 are larger, the larger the pressure contact areas between the surfaces 13 and 23 of the width-direction one end portion 10a and the width-direction one end portion 20a of the first fastener tape 10 and the second fastener tape 20 are, the more the occurrence of the gap (intermediate partition portion) between the first fastener tape 10 and the second fastener tape 20 can be suppressed, and the improvement of the appearance, the water resistance, and the water resistance can be facilitated. Further, the first fastener tape 10 and the second fastener tape 20 are not easily broken by being pressure-bonded to each other, and thus the shape is easily maintained.

In addition, since the first fastener tape 10 and the second fastener tape 20 are woven or knitted fabrics and have excellent flexibility as described above, the adhesion between the first fastener tape 10 and the second fastener tape 20 can be improved when the first element row 50 and the second element row 60 are engaged with each other. In addition, the buckling state of the first fastener tape 10 and the second fastener tape 20 can be maintained. Therefore, the occurrence of a gap (intermediate portion) between the first fastener tape 10 and the second fastener tape 20 can be suppressed, and improvement of the appearance, or improvement of the water resistance, the water resistance can be facilitated. Further, it is assumed that when the first fastener tape 10 and the second fastener tape 20 are molded from resin or the like, the buckling shape is not easily formed and maintained.

Fig. 4 is a cross-sectional view of a main portion of a slide fastener according to a modification of the first embodiment, and is a view showing a state in which a first element row and a second element row are engaged. In the example of fig. 3, the degree of buckling of the width-direction one end portion 10a of the first fastener tape 10 and the width-direction one end portion 20a of the second fastener tape 20 is enhanced as compared with the example of fig. 2, and the pressure-bonding area of the surface 13 of the width-direction one end portion 10a of the first fastener tape 10 and the surface 23 of the width-direction one end portion 20a of the second fastener tape 20 is increased. Thus, by properly adjusting the pressure contact area, the requirements for water resistance and water resistance can be satisfied.

(second embodiment)

Fig. 5 is a cross-sectional view of a main portion of the slide fastener according to the second embodiment, and is a view showing a state in which the first element row and the second element row are engaged. Fig. 6 is a cross-sectional view of a main portion of the slide fastener according to the second embodiment, and is a view showing a state in which the first element row and the second element row are separated. The slide fastener 1 of the second embodiment is different from the first embodiment in that the first fastener tape 10 and the second fastener tape 20 are provided with the first water stopper film 70 and the second water stopper film 80. Since the other structures of the second embodiment are the same as those of the first embodiment, the description thereof is omitted or simplified by designating the same symbols as those of the first embodiment in the drawings.

As shown in fig. 5 and 6, the slide fastener 1 of the second embodiment further includes: a first water blocking film 70 (first water blocking layer) provided on the surface 13 of the first fastener tape 10; and a second water blocking film 80 (second water blocking layer) provided on the surface 23 of the second fastener tape 20. Therefore, the slide fastener 1 of the present embodiment is a water stop slide fastener having water stop properties.

The pair of left and right first water blocking films 70 and the second water blocking film 80 are elongated in the same manner as the first fastener tape 10 and the second fastener tape 20, and have a back surface 71, a back surface 81 (first water blocking main surface), and surfaces 73 and 83 (second water blocking main surface) on opposite sides of the back surface 71 and the back surface 81. The first water blocking film 70 and the second water blocking film 80 are formed to cover the entire surfaces 13, 23 of the first fastener tape 10 and the second fastener tape 20. In the present embodiment, the first water blocking film 70 and the second water blocking film 80 have substantially the same vertical dimension and width dimension as the first fastener tape 10 and the second fastener tape 20.

The first water blocking film 70 and the second water blocking film 80 are formed by joining and integrating a water blocking layer such as a thermosetting polyurethane film to the surfaces 13 and 23 of the first fastener tape 10 and the second fastener tape 20 to which the first fastener element row 50 and the second fastener element row 60 are sewn by adhesion, welding, or the like. Here, the slide fastener 1 is in a state where the first fastener tape 10 and the second fastener tape 20 are integrally joined to each other by a common water stop layer (first water stop film 70 and second water stop film 80).

Thereafter, a water repellent is attached to the slide fastener 1 by the same method as described in the first embodiment. For example, the fastener stringers 3 and 5 may be continuously impregnated with the waterproofing agent by being wound around the peripheral surface of a guide roller, not shown, and continuously passed through a container filled with the waterproofing agent. In the above-described process, the entire surfaces of the first fastener tape 10 and the second fastener tape 20, the first element row 50 and the second element row 60, the core thread 32, the stitches 33, and the water stop layer (the first water stop film 70 and the second water stop film 80) constituting the fastener stringers 3, 5 are efficiently provided with water resistance. Next, the fastener stringers 3, 5 are lifted from the container and continuously passed through the drying chamber, whereby the waterproofing agent applied to the entire surfaces of the fastener stringers 3, 5 is dried first. Thereafter, the fastener stringers 3 and 5 after the completion of the drying of the waterproofing agent are further continuously passed through a heat treatment chamber, whereby the dried waterproofing agent is heat-treated. In the heat treatment, the welding and adhesion treatment is performed between the waterproofing agent and all the base materials of the first fastener tape 10 and the second fastener tape 20, the first element row 50 and the second element row 60, the core thread 32, the thread 33, and the water blocking layer (the first water blocking film 70 and the second water blocking film 80).

Next, the slide fastener 1 after the completion of the heat treatment is taken out, and the single water stop layer (the first water stop film 70 and the second water stop film 80) connecting the pair of right and left fastener stringers 3, 5 to each other is cut in the longitudinal direction along the engagement portion where the first element row 50 and the second element row 60 are engaged with each other by a cutting device such as a cutter, and divided into two parts in the right and left directions. In this way, a pair of left and right first water blocking films 70 and 80 are formed.

As shown in fig. 6, in a state where the first fastener element row 50 and the second fastener element row 60 are separated, the first fastener tape 10 and the first width-direction one end portion 10a and the first width-direction one end portion 70a of the first water stop film 70 are separated from the second fastener tape 20 and the second width-direction one end portion 20a and the width-direction one end portion 80a of the second water stop film 80 in the width direction.

As shown in fig. 6, in a state where the first fastener element row 50 and the second fastener element row 60 are separated, the first fastener tape 10 and the first width-direction one end portion 10a and the first width-direction one end portion 70a extend further toward the second fastener tape 20 side (width-direction one end side) than the position O1 serving as the engagement center O of the first fastener element row 50 and the second fastener element row 60, and the second fastener tape 20 and the second width-direction one end portion 20a and the first width-direction one end portion 80a of the second fastener tape 80 extend further toward the first fastener tape 10 side (width-direction one end side) than the position O2 serving as the engagement center O. That is, when the first element row 50 and the second element row 60 are engaged as shown in fig. 4, the first fastener tape 10 and the second fastener tape 20 are designed to overlap with the engagement center O, and the first water stop film 70 and the second water stop film 80 are designed to overlap with the engagement center O. By disposing the first fastener tape 10 and the second fastener tape 20, the first water stop film 70 and the second water stop film 80, and the first element row 50 and the second element row 60 as described above, when the first element row 50 and the second element row 60 are engaged as described below, the first fastener tape 10 and the second fastener tape 20, and the first water stop film 70 and the second water stop film 80 can be buckled in a curved shape and closely contacted with each other.

More specifically, in a state where the first fastener element row 50 is separated from the second fastener element row 60, the first fastener tape 10 and the first end face 10b and the first end face 70b in the width direction are disposed on the second fastener tape 20 side (the one end side in the width direction) than the position O1 serving as the engagement center O, and the second fastener tape 20 and the first end face 20b and the first end face 80b in the width direction of the second fastener tape 80 are disposed on the first fastener tape 10 side (the one end side in the width direction) than the position O2 serving as the engagement center O.

The first fastener tape 10 and the first water stop film 70 may be disposed at a position overlapping at least a part of the coupling head 31a of the fastener element 31 in the width direction with the width direction one end surface 10b and the width direction one end surface 70b, may be disposed on the same plane S1 as the width direction one end surface 31e of the coupling head 31a (i.e., the width direction one end surface of the first fastener element row 50) in the width direction, or may be disposed on the second fastener tape 20 side than the coupling head 31 a. In the example of fig. 6, the first fastener tape 10 and the first water stop film 70 are arranged on the same plane S1 as the width-direction one end surface 10b and the width-direction one end surface 70b of the first element row 50 in the width direction.

The first end surfaces 20b and 80b of the second fastener tape 20 and the second water stop film 80 may be disposed at positions overlapping at least a part of the coupling head 31a of the fastener element 31 in the width direction, may be disposed on the same plane S2 as the first end surface 31f of the coupling head 31a in the width direction (i.e., the first end surface of the second fastener element row 60 in the width direction), or may be disposed on the first fastener tape 10 side of the coupling head 31 a. In the example of fig. 6, the width-direction one end surface 20b of the second fastener tape 20 and the width-direction one end surface of the second element row 60 are arranged on the same plane S2 in the width direction.

In this way, the first fastener tape 10 and the first fastener element row 50 are arranged on the same plane S1 with respect to the width-direction one end surface 10b, the width-direction one end surface 70b, and the width-direction one end surface of the first fastener element row 50, and the second fastener tape 20 and the second fastener element row 80 are arranged on the same plane S2 with respect to the width-direction one end surface 20b, the width-direction one end surface 80b, and the width-direction one end surface of the second fastener element row 60, whereby the first fastener tape 10 and the second fastener tape 20 and the first fastener element row 70 and the second fastener element row 80 can be more reliably pressed and bent into an arc shape to be closely contacted with each other when the first fastener element row 50 and the second fastener element row 60 are engaged. The reason is that the following configuration relation is: the first fastener tape 10 and the second fastener tape 20 are not prevented from being engaged with each other by the first element row 50 and the second element row 60 by the width-direction one end portion 10a and the width-direction one end portion 20a, and the first fastener tape 10 and the second fastener tape 20 are not easily broken by pressure bonding. The term "disposed on the same plane" does not necessarily have to be disposed entirely on the same plane, and includes a case where one end surface in the width direction of the fastener tape is substantially on the same plane as a range from the start point of the taper of the engaging head 31a to the end point of the taper, in consideration of the taper of the engaging head 31 a.

By moving the slider 40 upward from the state in which the first element row 50 and the second element row 60 are separated as shown in fig. 6, the pair of left and right first element rows 50 and the second element row 60 are engaged as shown in fig. 5. At this time, the first fastener tape 10 and the first end portion 10a and the first end portion 70a in the width direction of the first water stop film 70 extend further toward the second fastener tape 20 side (first end portion in the width direction) than the position O1 which becomes the engagement center O of the first fastener element row 50 and the second fastener element row 60, and the second fastener tape 20 and the first end portion 20a and the first end portion 80a in the width direction of the second water stop film 80 extend further toward the first fastener tape 10 side (first end portion in the width direction) than the position O2 which becomes the engagement center O, and therefore the first end portion 10a and the first end portion 70a in the width direction, the first end portion 20a in the width direction and the first end portion 80a in the width direction are deformed by being pressed against each other, and are buckled into an arc shape protruding toward the front side to be closely contacted with each other. In this case, as shown in fig. 2, the first fastener tape 10 and the second fastener tape 20 may be sewn to the first fastener tape 10 and the second fastener tape 20, and the stitches 33 on the width-direction one end 10a and the width-direction one end 20a of the first fastener tape 10 and the second fastener tape 20 may slightly extend and float with buckling of the first fastener tape 10 and the second fastener tape 20.

In this way, when the first fastener element row 50 and the second fastener element row 60 are engaged with each other, the first fastener tape 10 and the second fastener tape 20 and the first water stop film 70 and the second water stop film 80 are closely adhered to each other, and therefore, a gap (so-called intermediate partition) is not formed between the first fastener tape 10 and the second fastener tape 20 and between the first water stop film 70 and the second water stop film 80 as in the conventional reverse-mounted fastener. Therefore, when the user views the slide fastener 1 from the front side, the first element row 50 and the second element row 60 cannot be visually recognized, and the appearance is excellent. The slide fastener 1 is particularly suitable for articles with high visual aesthetics such as automobile seats, bags, furniture and the like.

Further, since the first fastener tape 10 and the second fastener tape 20 and the first water stopper film 70 and the second water stopper film 80 are buckled in an arc shape and are closely contacted with each other, even when a force (so-called lateral pulling) in a direction away from each other acts on the first fastener tape 10 and the second fastener tape 20, the buckling degree is reduced only slightly in a range in which the engagement gaps between the fastener elements 31 and 31 are canceled, and thus the closely contacted state can be maintained, and a good appearance of the slide fastener 1 can be maintained.

When the first fastener element row 50 and the second fastener element row 60 are mutually engaged, the first fastener tape and the second fastener tape and the first water stopper film 70 and the second water stopper film 80 are bent in an arc shape to be closely adhered to each other, so that a gap (intermediate partition) is not formed between the first fastener tape 10 and the second fastener tape 20 and between the first water stopper film 70 and the second water stopper film 80, and entry of liquid from the intermediate partition as in the prior art can be suppressed.

As shown in fig. 5, when the first fastener element row 50 and the second fastener element row 60 are engaged with each other, the first fastener tape 10 and the second fastener tape 20 have the first end face 10b and the first end face 20b in the width direction, and the first end face 70b and the first end face 80b in the width direction of the first water stop film 70 and the second water stop film 80 face the fastener element 31 side (back side). The first water stop film 70 and the second water stop film 80 may also abut on the first element row 50 and the second element row 60 at the width-direction one end surface 70b and the width-direction one end surface 80 b. The surface 73 of the first widthwise end portion 70a of the first water blocking film 70 and the surface 83 of the first widthwise end portion 80a of the second water blocking film 80 are in close contact with each other at the engagement center O. Therefore, the liquid immersion suppressing effect can be improved.

Fig. 7 is a cross-sectional view of a main portion of a slide fastener according to a modification of the second embodiment, and is a view showing a state in which a first element row and a second element row are engaged. In the example of fig. 7, as compared with the example of fig. 5, the degree of buckling of the first fastener tape 10 and the first widthwise end portion 10a, the first widthwise end portion 70a, and the second fastener tape 20 and the second widthwise end portion 20a, the first widthwise end portion 80a of the first fastener film 70 is enhanced, and the pressure contact area of the surface 73 of the first widthwise end portion 70a of the first fastener film 70 and the surface 83 of the first widthwise end portion 80a of the second fastener film 80 is increased. Thus, by properly adjusting the pressure contact area, the requirements of water stopping property and water resistance can be satisfied.

The present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit of the present invention.

As described above, the following matters are disclosed in the present specification.

[1] A slide fastener 1 comprising:

the pair of first and second fastener tapes 10, 20 are elongated and have first main surfaces 11, 21 and second main surfaces 13, 23 on opposite sides of the first main surfaces 11, 21, respectively;

a first fastener element row 50 provided on the first main surface 11 of the one widthwise end portion 10a of the first fastener tape 10; and

a second element row 60 provided on the first main surface 21 of the one widthwise end portion 20a of the second fastener tape 20, and provided in the slide fastener 1,

when the first element row and the second element rows 50, 60 are engaged with each other, the width direction one end portion 10a of the first fastener tape 10 and the width direction one end portion 20a of the second fastener tape 20 are respectively bent into an arc shape and are closely adhered to each other.

According to the above configuration, since the first fastener tape and the second fastener tape 10, 20 are closely adhered to each other when the first fastener element row and the second fastener element row 50, 60 are engaged with each other, a gap (so-called intermediate partition) is not formed between the first fastener tape and the second fastener tape 10, 20 as in the conventional reverse-attached fastener. Therefore, when the user views the slide fastener 1 from the front side, the first element row and the second element row 50, 60 cannot be visually recognized, and the appearance is excellent. The slide fastener 1 is particularly suitable for articles with high visual aesthetics such as automobile seats, bags, furniture and the like. Further, since the first fastener tape and the second fastener tape 10, 20 are pressed and bent into the shape of an arc to be closely contacted with each other, even when a force (so-called lateral pulling) in a direction away from each other acts on the first fastener tape and the second fastener tape 10, 20, in a range in which the engagement gap between the fastener elements 31, 31 is canceled out, the closely contacted state can be maintained only by a slight decrease in the degree of buckling, and therefore, a good appearance of the slide fastener 1 can be maintained.

[2] The slide fastener 1 according to [1], wherein,

when the first element row and the second element rows 50, 60 are engaged with each other, the second main surface 13 of the one widthwise end portion 10a of the first fastener tape 10 and the second main surface 23 of the one widthwise end portion 20a of the second fastener tape 20 are in close contact with each other.

According to the above configuration, since the second main surfaces 13, 23 of the width-direction one end portions 10a, 20a of the first and second fastener tapes 10, 20 are in close contact with each other, the thickness of the slide fastener 1 can be suppressed and the sliding resistance of the slider 40 can be reduced as compared with the case where the first main surfaces 11, 21 are in close contact with each other.

[3] The slide fastener 1 according to [1] or [2], wherein,

when the first element row and the second element rows 50, 60 are engaged with each other, a first space T1 is partitioned and formed between the first main surface 11 of the one end portion 10a in the width direction of the first fastener tape 10 and the first element row 50,

a second space T2 is defined between the first main surface 21 of the one widthwise end portion 20a of the second fastener tape 20 and the second element row 60.

According to the above configuration, by providing the first and second spaces T1 and T2, the first and second fastener tapes 10 and 20 can be easily buckled when the first and second element rows 50 and 60 are combined by the slider 40. Further, as the first and second spaces T1, T2 are larger, the larger the pressure contact areas between the first main surfaces 11, 21 of the first and second fastener tapes 10, 20 and the first and second width-direction end surfaces 10b, 20b are, the more the occurrence of gaps (intermediate partitions) between the first and second fastener tapes 10, 20 can be suppressed, and thus improvement in appearance or improvement in water blocking property and water resistance can be facilitated. Further, the first and second fastener tapes 10 and 20 are not easily broken by being pressure-bonded to each other, and thus the shape is easily maintained.

[4] The slide fastener 1 according to [1] or [2], wherein,

the first fastener tape and the second fastener tape 10, 20 are fabrics or knits.

According to the above configuration, since the first and second fastener tapes 10 and 20 are woven or knitted fabrics and have excellent flexibility, the adhesion of the first and second fastener tapes 10 and 20 can be improved when the first element row and the second element row 50 and 60 are engaged with each other. In addition, the buckling state of the first and second fastener tapes 10, 20 can be maintained. Therefore, the occurrence of a gap (intermediate partition) between the first and second fastener tapes 10, 20 can be suppressed, and improvement in appearance, water stopping property, and water resistance can be facilitated.

[5] The slide fastener 1 according to [1] or [2], wherein,

the first fastener element row 10 has one end portion 10a in the width direction extending toward the second fastener element 20 side than the engagement center O of the first fastener element row and the second fastener element row 50, 60, and the second fastener element 20 has one end portion 20a in the width direction extending toward the first fastener element 10 side than the engagement center O, whereby the first fastener element row and the second fastener element row 50, 60 are engaged with each other, and the first end portion 10a in the width direction of the first fastener element 10 and the first end portion 20a in the width direction of the second fastener element 20 are bent in a curved shape and are closely adhered to each other.

According to the above configuration, the first fastener tape and the second fastener tape 10, 20 can be pressed and bent into a curved shape and bonded to each other when the first fastener element row and the second fastener element row 50, 60 are engaged with each other by the arrangement relation of the first fastener element row and the second fastener element row 50, 60 and the first fastener tape and the second fastener tape 10, 20.

[6] The slide fastener 1 according to [5], wherein,

the first fastener element row 50 and the second fastener element row 50 are engaged with each other by arranging the first end face 10b in the width direction of the first fastener element row 10 and the first end face 31e in the width direction of the first fastener element row 50 on the same plane S1, and arranging the first end face 20b in the width direction of the second fastener element row 20 and the first end face 31f in the width direction of the second fastener element row 60 on the same plane S2, and by this, the first end 10a in the width direction of the first fastener element row 10 and the first end 20a in the width direction of the second fastener element row 20 are bent into an arc shape and are closely contacted with each other.

According to the structure, the first and second fastener tapes 10, 20 can be more reliably pressed and bent into a curved shape to be closely adhered to each other. The reason is that the following configuration relation is: the width-direction one end portions 10a, 20a of the first and second fastener tapes 10, 20 do not interfere with the engagement of the first and second element rows 50, 60, and the pressure-bonding of the first and second fastener tapes 10, 20 is not easily broken.

[7] The slide fastener 1 according to [1] or [2], comprising:

a first water-blocking layer 70 provided on the second main surface 13 of the first fastener tape 10; and

a second water-blocking layer 80 is provided on the second main surface 23 of the second fastener tape 20.

According to the above configuration, water blocking property can be imparted to the slide fastener 1.

[8] The slide fastener 1 according to [7], wherein,

when the first element row and the second element rows 50, 60 are engaged with each other, the width-direction one end portion 70a of the first water blocking layer 70 and the width-direction one end portion 80a of the second water blocking layer 80 are bent into an arc shape and are closely contacted with each other.

According to the above configuration, when the first fastener element row and the second fastener element row 50, 60 are engaged with each other, the first fastener tape and the second fastener tape 10, 20 and the first water stop film and the second water stop film 70, 80 are closely joined to each other, so that a gap (so-called intermediate partition) is not formed between the first fastener tape and the second fastener tape 10, 20 and between the first water stop film and the second water stop film 70, 80 as in the conventional reverse fastener 100. Therefore, when the user views the slide fastener 1 from the front side, the first element row and the second element row 50, 60 cannot be visually recognized, and the appearance is excellent. The slide fastener 1 is particularly suitable for articles with high visual aesthetics such as automobile seats, bags, furniture and the like.

[9] The slide fastener 1 according to [8], wherein,

the first water-blocking layer and the second water-blocking layer 70, 80 respectively include: first water-stopping main surfaces 71, 81 in contact with the second main surfaces 13, 23 of the first and second fastener tapes 10, 20; and second water-stopping main surfaces 73, 83 which are opposite sides of the first water-stopping main surfaces 71, 81,

when the first element row and the second element rows 50, 60 are engaged with each other, the second water-stop main surface 73 of the one widthwise end portion 70a of the first water-stop layer 70 and the second water-stop main surface 83 of the one widthwise end portion 80a of the second water-stop layer 80 are in close contact with each other.

According to the structure, the liquid immersion suppressing effect can be improved.

Claims (9)

1. A slide fastener (1), characterized by comprising:

a pair of first and second fastener tapes (10, 20) each having a long strip shape and having first main surfaces (11, 21) and second main surfaces (13, 23) on opposite sides of the first main surfaces (11, 21);

a first fastener element row (50) provided on the first main surface (11) of one end (10 a) of the first fastener tape (10) in the width direction; and

a second element row (60) provided on the first main surface (21) of one end (20 a) of the second fastener tape (20) in the width direction, and in the fastener (1),

When the first fastener element row and the second fastener element row (50, 60) are engaged with each other, the width-direction one end portion (10 a) of the first fastener tape (10) and the width-direction one end portion (20 a) of the second fastener tape (20) are respectively bent into an arc shape and are closely adhered to each other.

2. The zipper (1) according to claim 1, characterized in that,

when the first fastener element row and the second fastener element row (50, 60) are engaged with each other, the second main surface (13) of the one end portion (10 a) in the width direction of the first fastener tape (10) and the second main surface (23) of the one end portion (20 a) in the width direction of the second fastener tape (20) are in close contact with each other.

3. The slide fastener (1) according to claim 1 or 2, characterized in that,

when the first element row and the second element row (50, 60) are engaged with each other, a first space (T1) is defined between the first main surface (11) of the one end portion (10 a) in the width direction of the first fastener tape (10) and the first element row (50),

a second space (T2) is defined between the first main surface (21) of one end (20 a) of the second fastener tape (20) in the width direction and the second element row (60).

4. The slide fastener (1) according to claim 1 or 2, characterized in that,

the first fastener tape and the second fastener tape (10, 20) are fabrics or knits.

5. The slide fastener (1) according to claim 1 or 2, characterized in that,

the first fastener tape (10) has one end (10 a) in the width direction extending toward the second fastener tape (20) side from the engagement center (O) of the first fastener element row and the second fastener element row (50, 60), and the second fastener tape (20) has one end (20 a) in the width direction extending toward the first fastener tape (10) side from the engagement center (O), whereby when the first fastener element row and the second fastener element row (50, 60) are engaged with each other, the one end (10 a) in the width direction of the first fastener tape (10) and the one end (20 a) in the width direction of the second fastener tape (20) are bent in an arc shape and are bonded to each other.

6. The zipper (1) according to claim 5, characterized in that,

the first fastener tape (10) has one end surface (10 b) in the width direction and one end surface (31 e) in the width direction of the first fastener element row (50) arranged on the same plane (S1), and the second fastener tape (20) has one end surface (20 b) in the width direction and one end surface (31 f) in the width direction of the second fastener element row (60) arranged on the same plane (S2), whereby when the first fastener element row and the second fastener element rows (50, 60) are engaged with each other, the one end (10 a) in the width direction of the first fastener tape (10) and the one end (20 a) in the width direction of the second fastener tape (20) are pressed and bent into an arc shape so as to be in close contact with each other.

7. The slide fastener (1) according to claim 1 or 2, comprising:

a first water-blocking layer (70) provided on the second main surface (13) of the first fastener tape (10); and

and a second water blocking layer (80) provided on the second main surface (23) of the second fastener tape (20).

8. The zipper (1) according to claim 7, characterized in that,

when the first element row and the second element row (50, 60) are engaged with each other, one end (70 a) of the first water-blocking layer (70) in the width direction and one end (80 a) of the second water-blocking layer (80) are pressed and bent into a curved shape to be closely contacted with each other.

9. The zipper (1) according to claim 8, characterized in that,

the first water-blocking layer and the second water-blocking layer (70, 80) each include: a first water-stopping main surface (71, 81) that is in contact with the second main surfaces (13, 23) of the first and second fastener tapes (10, 20); and second water-stopping main surfaces (73, 83) which are opposite sides of the first water-stopping main surfaces (71, 81),

when the first element row and the second element rows (50, 60) are engaged with each other, the second water-stop main surface (73) of the one widthwise end portion (70 a) of the first water-stop layer (70) and the second water-stop main surface (83) of the one widthwise end portion (80 a) of the second water-stop layer (80) are in close contact with each other.