HK1174509B - Fastener stringer and slide fastener - Google Patents

Description

Slide fastener stringer and slide fastener

Technical Field

The present invention relates to a fastener stringer in which fastener elements are colored together with a fastener tape by a coloring material, and a slide fastener having the fastener stringer.

Background

In general, a slide fastener is manufactured by attaching synthetic resin or metal fastener elements to opposite side edge portions of a woven or knitted fastener tape to form fastener stringers, and slidably attaching sliders to element rows of right and left fastener stringers so that the resulting fastener stringers are grouped into two. In such a slide fastener, the coupling and decoupling of the opposing elements is performed by sliding the slider along the element rows.

In general, various designs have been conventionally implemented for clothes, bags, and the like, and new designs are required for the purpose of improving the value of products and the like. Recently, a design is required for a slide fastener used for such clothes, bags and the like, and a slide fastener in which a fastener tape or a fastener element is provided with various patterns and colors has been marketed.

As a method of applying a pattern or color to a fastener stringer or fastener elements, for example, a method of attaching a thermal transfer sheet having a predetermined pattern or the like to a fastener stringer and then heat-treating the fastener stringer to transfer the pattern or the like to the fastener stringer, a method of printing a predetermined pattern or the like on the fastener stringer by an ink jet method and then heat-treating the fastener stringer to color the fastener stringer, and the like are known.

For example, a method and an apparatus for dyeing a slide fastener by an ink jet method are disclosed in japanese patent application laid-open No. 4-24004 (patent document 1).

In the method for dyeing a slide fastener described in patent document 1, first, ink droplets are ejected from an ink jet nozzle onto one surface of the slide fastener including the fastener elements made of synthetic resin, thereby forming a pattern on the surface of the slide fastener. Thereafter, the heat treatment is performed on the fastener tape having the pattern, so that the dye attached to the fastener is printed on the fastener tape and the fastener elements.

Further, U.S. Pat. No. 2,041,558 (patent document 2) discloses a slide fastener in which a large concave portion (or groove portion) is formed on the surface of a fastener element. The recess is decoratively formed on the tooth surface as one of the basic element designs. Further, according to the above patent document 2, after the fastener element is coated or plated, a filler is filled into the concave portion of the fastener element, whereby an excellent difference can be expressed on the surface of the fastener element.

Prior art documents

Patent document

Patent document 1: japanese laid-open patent publication No. 4-24004

Patent document 2: U.S. patent No. 2,041,558

In the case where the fastener tape and the fastener elements are colored by the ink jet method as in patent document 1, the fastener tape is immediately fixed by the penetration of the discharged ink droplets into the fibers, and therefore, a desired pattern or color can be formed on the fastener tape.

However, when ink droplets are ejected onto the surface of the fastener element, since it is difficult to fix the color of each ink droplet adhering to the surface of the element before the heat treatment, the ink droplets immediately adjacent to each other are mixed, and the pattern and the color easily permeate (the pattern and the color contour are easily blurred). Therefore, there is a drawback that a desired pattern and color cannot be formed on the fastener tape with good appearance with respect to the fastener elements.

On the other hand, the slide fastener disclosed in patent document 2 can impart a predetermined pattern to the fastener element by filling the filler in the concave portion formed in the fastener element, and making the color different between the portion filled with the filler and the portion not filled with the filler, but cannot impart a fine pattern and a color beautifully to the fastener element, as in the case of coloring the fastener element by an ink jet method as in patent document 1.

Further, when only the filler is simply incorporated into the concave portion formed on the element surface, there is a problem that the filler is easily detached from the element due to friction or impact applied to the element when, for example, the slider is slid or the slide fastener collides with another article.

As one of methods for dyeing fastener stringers (or zippers), post dyeing (also referred to as beam dyeing) is generally known. The dyeing method by the post dyeing is a method of winding the fastener stringer around a warp beam for dyeing, and storing the warp beam wound with the fastener stringer in a dyeing kettle for dyeing.

When the fastener stringer is dyed by such post-dyeing, when the fastener stringer is wound around the beam in several overlapped layers, the surface of the fastener element wound around each layer and the back surface of the fastener element wound around the next layer are easily adhered to each other. Therefore, when the fastener stringer wound around the beam is dyed in the dyeing kettle, the dye is less likely to spread over the front and back surfaces of the fastener elements, and uneven dyeing may occur in the dyed fastener elements.

The present invention has been made in view of the above-described conventional problems, and a specific object thereof is to provide a fastener stringer capable of providing a desired pattern and color in the same manner as a fastener tape when coloring the fastener elements attached to the fastener tape by an ink jet method, and capable of stably coloring the element surfaces without causing color unevenness by reliably spreading a dye over the element surfaces when dyeing by post dyeing, and a fastener chain using the fastener stringer.

Disclosure of Invention

In order to achieve the above object, a fastener stringer according to the present invention is a fastener stringer as a basic configuration including a fastener tape and a plurality of fastener elements attached along one side edge portion of the fastener tape, wherein at least one surface of the fastener elements is subjected to coloring treatment or surface treatment, and is characterized in that a plurality of fine fixing space portions are disposed on at least one surface of the fastener elements subjected to coloring treatment or surface treatment.

Particularly, in the present invention, at least one surface of the fastener element subjected to the coloring treatment or the surface treatment is treated to 1mm per one surface²The concave portions or the convex portions are arranged at a ratio of 1 to 25, and the fixing space portion is constituted by a space portion formed in the concave portion or a space portion formed around the convex portion.

In the fastener stringer according to the present invention, it is preferable that a predetermined interval is provided between the concave portions adjacent to each other or between the convex portions adjacent to each other.

In the fastener stringer according to the present invention, the concave portion or the convex portion is preferably formed in a hemispherical shape, a tapered shape, or a truncated cone shape.

In this case, it is preferable that the volume of the space formed by one concave portion or one convex portion is set to 0.002mm³Above 0.27mm³The following. Further, it is preferable that the plurality of concave portions or the plurality of convex portions arranged on the one surface of the fastener element are covered with a filmAre formed in the same shape or similar shapes to each other. Further, it is preferable that the plurality of concave portions or the plurality of convex portions arranged on the one surface of the element are formed in a zigzag shape.

In the fastener stringer according to the present invention, the concave portion or the convex portion may be formed in a groove shape or a ridge shape along a predetermined direction.

In the fastener stringer according to the present invention, the fastener elements are preferably colored by an ink jet method, and particularly, a pattern is preferably formed on the fastener elements and the fastener tape by coloring. Alternatively, the fastener elements may be colored by post-dyeing.

In the fastener stringer according to the present invention, it is preferable that the fastener element includes a stem portion fixed to the fastener tape, a neck portion extending outward from the stem portion, and an engagement head portion disposed at a distal end of the neck portion, and a sidewall surface of the stem portion facing inward of the fastener tape is formed as a flat surface.

Further, according to the present invention, there is provided a slide fastener including the fastener stringer having the above-described structure.

In the slide fastener according to the present invention, it is preferable that at least one of the upper stopper disposed on one end side of the element row formed by the element, the lower stopper or the separable bottom end stop disposed on the other end side of the element row, and the slider slidable along the element row has a surface facing the same direction as a surface of the element on which the concave portion or the convex portion is provided, at a rate of 1mm per surface²The ratio of 1 to 25 has a plurality of concave portions or convex portions.

Effects of the invention

The fastener stringer according to the present invention is a fastener stringer in which at least one surface of an element is subjected to coloring treatment or surface treatment, and a plurality of fine fixing space portions are arranged on at least one surface of the element subjected to coloring treatment or surface treatment. Particularly, in the present invention, at least one surface of the fastener element to which the coloring treatment or the surface treatment is applied is treated at a rate of 1mm per one surface²1 or more and 2The concave portions or the convex portions are arranged at a ratio of 5 or less, and the fixing space portion is constituted by a space portion formed in the concave portion or a space portion formed around the convex portion.

In the present invention, the coloring treatment or the surface treatment to be performed on the tooth is not particularly limited. As the coloring treatment for the fastener element, for example, a method of coloring with a dye-based ink or a pigment-based ink by the ink jet method as described above, a dyeing method by post dyeing, a spray coating treatment by ejection, or the like can be suitably used. As the surface treatment to be performed on the fastener element, a film forming treatment such as a plating treatment and a vapor deposition treatment, a treatment of bonding a sheet-like film by thermal transfer, or the like can be used.

Therefore, in the case of coloring the fastener stringer according to the present invention in which the fixing space portion is disposed on the surface of the element through the concave portion or the convex portion as described above, for example, by the ink jet method, the ink droplets ejected onto the surface of the element can be received by the fixing space portion on the element surface, and the ink droplets adhering to the element surface can be stably fixed.

Accordingly, since the ink droplets adhering to the element surfaces can be prevented from being mixed with each other, the pattern and color adhering to the element can be prevented from permeating (the outline of the pattern and color is blurred), and the pattern and color outline can be clearly and beautifully formed. Therefore, the fastener element can be provided with a desired pattern and color as in the case of the fastener tape.

In the slide fastener of patent document 2, the concave portion is provided on the surface of the element, but the concave portion formed in patent document 2 is formed to be large enough to be visible as a decoration. Therefore, even if ink is ejected onto the surface of the fastener element of patent document 2 by an ink jet method, for example, a plurality of ink droplets are mixed in the recessed portion, and a problem occurs in that a pattern and a color are permeated, and a contour is blurred.

On the other hand, in the case of dyeing the fastener stringer according to the present invention by post dyeing, even if the fastener stringer is wound on a beam in a superposed manner, the dye can be smoothly spread over the front and back surfaces of the fastener element by providing the permanent color space portion on the front surface of the fastener element. Therefore, the fastener element can be dyed uniformly in a desired color without causing color unevenness.

In addition, when the fastener stringer is subjected to a coloring treatment by spraying, or a surface treatment including a film forming treatment such as a plating treatment and a vapor deposition treatment, or a treatment of bonding a sheet-like film by thermal transfer, the adhesion or fixation of the one surface of the fastener element, the film (including a sprayed film or the like) formed on the one surface, or the film bonded to the one surface can be improved by providing a fixing space portion on the surface of the fastener element. Therefore, it is difficult to peel off the film or film disposed on the fastener element, and the quality of the fastener stringer can be stably maintained for a long period of time.

In the fastener stringer according to the present invention, a predetermined gap is provided between the concave portions adjacent to each other or between the convex portions adjacent to each other. Accordingly, when coloring the fastener chain by the ink jet method, the ink droplets ejected on the surface of the fastener element can be effectively fixed in color, and the ink droplets can be more reliably prevented from mixing with each other.

In the fastener stringer according to the present invention, the concave portion or the convex portion is formed in a hemispherical shape, a tapered shape, or a truncated cone shape. Accordingly, when coloring the fastener chain by the ink jet method, the ink droplets ejected on the surface of the fastener element can be reliably fixed. In addition, when the fastener stringer is dyed by post-dyeing, the dye can be reliably spread over the front and back surfaces of the fastener element, and the fastener stringer can be stably dyed.

Further, when the fastener stringer is subjected to a coloring treatment by spraying, or a surface treatment including a coating forming treatment such as a plating treatment and a vapor deposition treatment, or a treatment of bonding a sheet-like film by thermal transfer, the adhesiveness or fixing property of the coating or the film disposed on the fastener element can be further improved.

In this case, the volume of the space formed by the one concave portion or the one convex portion is set to 0.002mm³Above 0.27mm³Hereinafter, for example, when coloring the fastener chain with a resolution of about 180dpi by an ink jet method, the ink droplets ejected on the surface of the fastener element can be stably fixed.

In the present invention, the volume of the space portion formed in the one concave portion is the volume of the space formed in the portion recessed from the surface of the element, and the volume of the space portion can be obtained by using a generally known calculation formula for obtaining the volume of a solid body or the like. For example, when the concave portion is formed in a hemispherical shape, the volume of the space portion can be calculated from the value of the radius of the hemispherical concave portion. On the other hand, the volume of the space formed by one projection can be determined, for example, by a method of calculating the volume of the space formed between the plane connecting the apexes of the projections formed on the element surfaces and the surface of the fastener element in a predetermined region, and dividing the volume of the fixing space in the calculated predetermined region by the number of projections arranged in the predetermined region.

Further, the plurality of concave portions or the plurality of convex portions arranged on the one surface of the colored or surface-treated fastener element are formed in the same shape or the similar shape, or the plurality of concave portions or the plurality of convex portions arranged on the one surface of the colored or surface-treated fastener element are arranged in the zigzag shape, so that the concave portions or the convex portions can be uniformly provided on the entire surface of the fastener element. Therefore, the ink droplets ejected onto the entire surface of the fastener element can be fixed in color stably at the respective positions, and the ink droplets can be more reliably prevented from mixing with each other.

On the other hand, in the fastener stringer of the present invention, the concave portion or the convex portion may be formed in a groove shape or a ridge shape along a predetermined direction such as a fastener tape width direction, a fastener tape longitudinal direction, or a direction inclined at a predetermined angle with respect to the fastener tape width direction. Accordingly, even when coloring the fastener chain by the ink jet method, the ink droplets ejected onto the surface of the fastener element can be reliably fixed.

In addition, when the fastener stringer is dyed by post-dyeing, the dye can be reliably spread over the front and back surfaces of the fastener element. Further, when a coating forming process such as a coloring process, a plating process, and a vapor deposition process, which are performed by spraying, or a surface treatment including a process of bonding a sheet-like film by thermal transfer is performed on the fastener stringer, the adhesiveness or fixing property of the coating or the film disposed on the fastener element can be further improved.

In the fastener stringer of the present invention, the fastener elements are colored by an ink jet method, so that a desired pattern and color can be continuously provided to the fastener stringer and the fastener elements, and the outline of the pattern and color can be clearly and beautifully formed. Therefore, the appearance of the fastener stringer can be improved.

On the other hand, in the fastener stringer of the present invention, even if the fastener elements are colored by post-dyeing, the fastener elements can be prevented from being unevenly dyed, and a desired color can be uniformly given. Therefore, the appearance of the fastener stringer can be improved.

In the fastener stringer of the present invention, the fastener element includes a stem portion fixed to the fastener tape, a neck portion extending outward from the stem portion, and an engagement head portion disposed at a distal end of the neck portion, and a sidewall surface of the stem portion facing inward of the fastener tape is formed as a flat surface without providing irregularities.

Accordingly, since it is difficult to distinguish the boundary between the fastener tape and the element when the fastener stringer is viewed from the front side, it can be seen that the pattern and the color added to the fastener tape and the element are continuous between the fastener tape and the element.

The slide fastener according to the present invention is configured using the fastener stringer having the above-described structure. The slide fastener of the present invention is formed by coloring the fastener stringer by an ink jet method, and the outline of the pattern and color added to the fastener element is formed beautifully, and the appearance is improved. In addition, the zipper is dyed after the zipper strips are dyed, so that the zipper with the zipper teeth being not dyed unevenly and the appearance being improved is formed.

In addition, in the slide fastener according to the present invention, at least one of the upper stopper disposed on one end side of the element row, the lower stopper or the separable bottom end stop disposed on the other end side of the element row, and the slider slidable along the element row is provided on the same surface side as the element at every 1mm²The ratio of 1 to 25 has a plurality of concavities or convexities for fixing the coloring material.

Accordingly, when coloring is performed by the ink jet method with respect to the fastener component parts such as the upper stopper, the lower stopper, the separable bottom end stop, and the slider, a desired pattern and color can be stably provided to each fastener component part in a continuous manner from the fastener tape and the element, and a contour of the pattern and color can be clearly and beautifully formed. In addition, when the zipper component is dyed by post-dyeing, a desired color can be uniformly imparted without causing unevenness in dyeing of each zipper component.

Drawings

Fig. 1 is a front view showing a slide fastener according to example 1 of the present invention.

Fig. 2 is an enlarged perspective view of the fastener elements of the slide fastener.

FIG. 3 is a front view of the fastener element.

FIG. 4 is a cross-sectional view of the fastener element.

Fig. 5 is a rear view showing the slide fastener when the back surface side of the fastener element is colored by the ink jet method.

Fig. 6 is a front view of a fastener element according to a modification of example 1.

FIG. 7 is a rear view of the fastener element.

Fig. 8 is an enlarged perspective view of a fastener element of a slide fastener according to example 2 of the present invention.

FIG. 9 is a front view of the fastener element.

FIG. 10 is a cross-sectional view of the fastener element.

Fig. 11 is an enlarged perspective view of a fastener element of a slide fastener according to example 3 of the present invention.

FIG. 12 is a front view of the fastener element.

Fig. 13 is an enlarged perspective view of a fastener element of a slide fastener according to example 4 of the present invention.

Fig. 14 is an enlarged front view of a fastener element of a slide fastener according to example 5 of the present invention.

Fig. 15 is a front view of the slide fastener colored with the upper stopper and the separable bottom end stop in addition to the fastener elements.

Fig. 16 is a front view of the slide fastener in which coloring is applied to the slider in addition to the fastener elements.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings by way of examples. The present invention is not limited to the embodiments described below, and various modifications can be made as long as the present invention has substantially the same structure as the present invention and exhibits the same operational effects.

For example, in the following embodiments, a fastener stringer and a slide fastener in which a plurality of elements made of synthetic resin are attached along one side edge portion of a fastener tape by injection molding are described, but the fastener stringer and the slide fastener according to the present invention are not limited thereto, and a plurality of metal elements may be attached along one side edge portion of the fastener tape by die casting.

Example 1

Fig. 1 is a front view showing the slide fastener according to example 1. Fig. 2 is an enlarged perspective view of the fastener element of the slide fastener, and fig. 3 and 4 are a front view and a cross-sectional view of the fastener element, respectively.

The slide fastener 10 according to example 1 includes a pair of right and left fastener stringers 1 having element rows 2 at opposite fastener tape side edge portions, right and left upper stoppers 3 fixed to one end side of the element rows 2, a separable bottom end stop 4 disposed at the other end side of the element rows 2, and a slider 5 slidably disposed along the element rows 2 to engage and separate the right and left element rows 2.

The left and right fastener stringers 1 in embodiment 1 are each provided with a fastener tape 6 and a plurality of fastener elements 11 made of synthetic resin attached to opposing fastener tape side edge portions of the fastener tape 6. Each of the left and right fastener tapes 6 is woven or knitted into a narrow band shape, and has a fastener tape main body portion 6a sewn to a product to which the fastener is attached, and an element attaching portion 6b to which a plurality of fastener elements 11 are attached. Further, a core portion 6c is provided at a fastener tape side end edge of the fastener tape 6 on the element attaching portion 6b side. The core portion 6c is formed in an expanded shape and is integrally knitted with the fastener tape 6.

The fastener tape 6 has element attaching portions 6b including the core portions 6c, and fastener elements 11 made of synthetic resin are arranged in a fastener tape longitudinal direction by injection molding to form element rows 2. In this case, each element 11 is formed symmetrically in the front-rear direction of the fastener tape with the fastener tape 6 therebetween, and has an engagement head portion 11a formed in an oval shape in the longitudinal direction of the fastener tape, a trunk portion 11c fixed to the fastener tape 6 with the core string portion 6c interposed therebetween, a neck portion 11b formed to be narrow in the middle between the engagement head portion 11a and the trunk portion 11c and into which the engagement head portion 11a of the element 11 to be engaged is fitted, and a wing-like shoulder portion 11d extending between the neck portion 11b and the trunk portion 11 c. Further, a recessed groove 11e for fitting a shoulder portion 11d of the element 11 to be a mating partner is formed in the peripheral wall surface on the tip end side of the coupling head portion 11 a.

Each element 11 has a first surface 12a disposed on the outer surface side of the slide fastener 10 and a second surface 12b disposed on the back surface side opposite to the first surface 12a, and the first and second surfaces 12a, 12b are formed over the coupling head portion 11a, the neck portion 11b, and the trunk portion 11 c. For example, the first surface 12a is a front surface side surface shown in fig. 1, and the second surface 12b is an opposite surface side surface.

A plurality of concave portions 13 are provided in the first surface 12a of the element 11 so as to be recessed with respect to the flat portion, and the concave portions 13 are regularly arranged in a zigzag shape. In the following description, the term "zigzag" means that the recesses 13 (the recesses 63 in example 5 described later) are arranged in a row with a space between adjacent recesses 13, and the recesses 13 forming one row are arranged so as to be positioned between the recesses 13 forming the row next to the row. The same applies to the case of the indented portions 13 and the case of the later-described protruding portions 33. By adopting the zigzag arrangement, the concave portions 13 (or the concave portions 63) or the convex portions 33 can be formed in a larger number in the same area.

In example 1, the space formed inside the concave portions 13 functions as a fixing space for fixing ink droplets ejected onto the first surface 12a when the fastener element 11 is colored by an ink jet method as described later.

In example 1, the concave portion 13 provided in each element 11 includes a first concave portion 13a of a hemispherical shape provided on the substantially entire first surface 12a, and a second concave portion 13b of a hemispherical shape provided along the peripheral edge of the ridge line of the trunk portion 11c and recessed smaller than the first concave portion 13 a. In this case, the first recess 13a disposed at the peripheral edge of the engagement head 11a and the peripheral edge of the neck 11b has a shape in which a part of a hemisphere is cut off.

In the present invention, all the concave portions 13 provided on the first surface 12a of the element 11 may be set to the same size, or may be set to three or more different sizes. The shape of the concave portion 13 provided on the first surface 12a is not limited to a hemispherical shape, and a conical shape (for example, see the element 61 of example 5 described later) or a truncated cone shape (a shape of a portion where a cone is cut on a plane parallel to the bottom surface and a small cone portion is removed) may be employed, but it is preferable that all the concave portions 13 provided on the first surface 12a have the same shape or a similar shape. Accordingly, when coloring the element 11 by the ink jet method, the ink droplets can be stably fixed to the element 11, and the appearance of the element 11 can be improved.

In this case, the concave portion 13 provided on the fastener element 11 is provided at every 1mm²The area is arranged in a ratio of 1 to 25. In particular, when coloring is performed with a resolution of 180dpi by an ink jet method as described later, it is preferable that 9 or more and 16 or less are arranged at a ratio as shown by a phantom line in fig. 3. In FIG. 3, each 1mm is shown by an imaginary line²The area (2) is provided with 8 recesses 13 and 9 recesses 13 in total, which are two recesses 13 cut in half by an imaginary line.

In general, since the fastener tape 6 of the fastener stringer 1 is formed by weaving or knitting fibers, irregularities corresponding to the thickness of the fibers are formed on the surface of the fastener tape. Therefore, when coloring the fastener stringer 1 by the ink jet method, a resolution of about 180dpi is often adopted in consideration of the unevenness of the fastener tape 6 (for example, even if the fastener tape 6 is colored by the ink jet method at a resolution higher than 180dpi of about 720dpi, only the fastener tape 6 is actually colored at a resolution corresponding to 180 dpi).

Further, it has been found from experiments and studies conducted by the present inventors that, for example, when the element 11 is colored by an ink jet method (particularly, when the element is dyed), a film of ink having a thickness of 0.05mm or more needs to be formed on the first surface 12a of the element 11 in order to beautifully express the pattern and color added to the element 11 or to provide a shade.

Furthermore, it is clear thatWhen coloring the fastener element 11 with a resolution of about 180dpi by the ink jet method, it is necessary to form an ink film having a thickness of 0.002mm for 1 pixel to form a film of the ink having the above-described thickness³～0.005mm³The amount of ink of (a).

Therefore, when the ink amount is required to color the fastener stringer 1 at a resolution of about 180dpi by the ink jet method, the fastener element 11 is required to have a resolution of 1mm per first surface 12a²If the ratio of the recessed portions 13 is smaller than 1, the ink droplets (ink amount) ejected onto the surface of the fastener element 11 cannot be sufficiently received by the respective recessed portions (fixing space portions) 13, and the adjacent ink droplets are mixed with each other, so that the pattern and color easily penetrate or become coarse.

On the other hand, every 1mm with respect to the first surface 12a²When the ratio of the area of the concave portions 13 is more than 25, the number of the concave portions 13 is sufficient, but the size (diameter) of each concave portion 13 is rather too small, and a sufficient volume cannot be secured in the fixation space portion of each concave portion 13.

Therefore, the ink droplets (ink amount) ejected onto the surface of the fastener element 11 cannot be received by the concave portion 13 accurately, and the adjacent ink droplets are likely to mix with each other. It is also considered that the thickness of the film is adjusted so that the thickness is 1mm or less²The ratio of the recessed portions 13 having an area larger than 25 increases the time and cost required for processing the mold for molding the fastener element 11, and the manufacturing cost of the fastener stringer 1 significantly increases.

Therefore, by doing like this embodiment 1, every 1mm with respect to the first surface 12a will be²The ratio of the concave portions 13 having the area is set to 1 to 25, and the ink droplets ejected onto the first surface 12a of the fastener element 11 can be reliably received by the concave portions 13 (fixing space portions), and the ink droplets can be stably fixed to the first surface 12 a. Therefore, it is possible to effectively prevent adjacent ink droplets from mixing with each other, and to suppress an increase in the manufacturing cost of the fastener stringer 1.

Further, it has been found from experiments and studies conducted by the present inventors that the setting is performed for each of the above-mentioned cases1mm²In the case of the ratio of the area of the concave portion 13, 0.002mm is caught by the concave portion 13 with respect to 1 pixel³～0.005mm³The ink amount of (2) was stably fixed, and the volume of the space (fixing space) of each concave portion 13 (excluding the concave portion in which a part of the concave portion 13 was cut) provided in the fastener element 11 was set to 0.002mm³Above 0.27mm³Hereinafter, the diameter of each concave portion 13 is preferably set to 0.05mm to 0.5 mm. It has been found that the interval between the adjacent recesses 13 is preferably set to 0.05mm to 0.3 mm.

Therefore, in the fastener element 11 of example 1, the diameter of the first concave portion 13a on the first surface 12a is 0.3mm, and the volume of the space portion thereof is set to 0.008mm³. The diameter of the second concave portion 13b on the first surface 12a was 0.2mm, and the volume of the space portion was set to 0.002mm³。

Further, the interval between the first recesses 13a adjacent to each other is set to 0.05 mm. On the other hand, as shown in fig. 2 and 3, the second concave portion 13b is disposed at the peripheral edge portion of the first surface 12a of the trunk portion 11c of the element 11, and the interval between the adjacent first concave portions 13a is set to 0.10 mm.

The fastener element 11 having the plurality of concave portions 13 as described above is fixed to the fastener tape 6 in a predetermined shape by injection molding synthetic resin on the fastener tape 6 using an injection molding die. In this case, as a material of the element 11, a thermoplastic resin such as polyacetal, polypropylene, polyethylene terephthalate, nylon, or the like can be used. In addition, in order to provide a plurality of concave portions 13 at predetermined positions and sizes on the fastener element 11, a plurality of convex portions are provided on a cavity surface of an injection molding die, and such a plurality of convex portions are formed by performing electric discharge machining on the cavity surface.

In the fastener element 11 of example 1, the concave portion 13 is formed on the first surface 12a of the coupling head portion 11a, the neck portion 11b, and the trunk portion 11c, and is not formed on the side wall surfaces of the coupling head portion 11a, the neck portion 11b, and the trunk portion 11 c. In particular, in the element 11, a side wall surface facing the inside of the fastener tape of the trunk portion 11c is formed as a flat surface.

The side wall surface is constituted by a surface in which the adjacent elements 11 arranged in a row in the body portion 11c face each other in the longitudinal direction of the fastener tape 6, and a surface facing in the fastener tape width direction opposite to the coupling head portion 11a in the longitudinal direction of the fastener tape 6. Here, in the fastener tape 6, the fastener tape 6 side on the mating side is regarded as the fastener tape outer side from the edge portion of the element attaching portion 6b, and the fastener tape main body portion 6a side is regarded as the fastener tape inner side from the edge portion of the element attaching portion 6b opposite to the fastener tape outer side. The case where the side wall surface is flat means the case where the fixation space portion (concave portion 13) is arranged on the side wall surface as described above.

By forming the side wall surface of the fastener tape inner side facing the trunk portion 11c flat in this manner, even when the slide fastener 10 is viewed from the front side, it is difficult to distinguish the boundary between the fastener tape 6 and the fastener element 11, and when ink droplets are deposited on the side wall surface, the ink droplets are likely to mix with each other. Therefore, the pattern, color, which is added throughout the fastener tape 6 and the elements 11, can be continuously seen without being interrupted at the boundary between the fastener tape 6 and the elements 11.

The shoulder 11d has flat surfaces on the first surface 12a side and the second surface 12b side, and no fixation space portion (concave portion 13) is formed on either surface. The shoulder portion 11d is a portion fitted into the concave groove 11e of the mating element when the left and right elements 2 are mated. Therefore, by not forming the recess 13 in the first surface 12a and the second surface 12b of the shoulder portion 11d, when the left and right elements 2 to be engaged receive a force in the fastener tape front-back direction, the contact area between the first surface 12a or the second surface 12b of the shoulder portion 11d and the inner wall surface of the recessed groove 11e becomes large, and strength against the force in the front-back direction can be easily secured.

On the other hand, in the slide fastener 10 of example 1, the left and right upper stoppers 3, the separable bottom end stop 4, and the slider 5 have the same configurations as those of the left and right upper stoppers, separable bottom end stop, and slider which have been generally used in the related art.

That is, the left and right upper stoppers 3 are fixed to one end side of the element row 2 by injection molding of the same synthetic resin as the element 11, and prevent the slider 5 from falling off from the one end side of the element row 2.

The separable insert 4 has an insertion tube, an insertion tube case, and a case body, and the insertion tube is configured to be insertable into and removable from the case body. By disposing the separable bottom end stop 4 in the slide fastener 10, the left and right fastener stringers 1 can be separated.

The slider 5 includes an upper wing plate, a lower wing plate, a guide post connecting the upper wing plate and the lower wing plate, upper and lower flanges extending from left and right side end edges of the upper and lower wing plates so as to be close to each other, a pull-tab attaching post erected on an upper surface of the upper wing plate, and a pull tab rotatably attached to the pull-tab attaching post.

With respect to the slide fastener 10 of example 1 having the above-described configuration, for example, the fastener tape 6 and the fastener elements 11 are colored at a resolution of 180dpi by using the dyeing method by the ink jet method as described in patent document 1, whereby a continuous desired pattern and a desired color can be easily added to the fastener tape 6 and the fastener elements 11 as shown in fig. 1.

To describe the dyeing method more specifically, first, while the slide fastener 10 of example 1 is conveyed at a predetermined speed in the longitudinal direction of the fastener tape, ink droplets of dye are ejected from an ink jet nozzle provided at a predetermined position toward the outer surface (the surface on the same side as the first surface 12a of the fastener element 11) of the slide fastener 10 as a whole in the width direction of the fastener tape 6.

At this time, the ink jet nozzle ejects ink from an ultrasonic head disposed on the nozzle, and the ultrasonic head gives ultrasonic vibration to the ink, thereby ejecting the ink in the form of minute droplets. In addition, in the ink jet nozzle, when ink droplets are ejected from the ultrasonic head, electric charges are given to the ink droplets by the electrodes.

When the ink droplets ejected from the ultrasonic head pass through the deflection electrodes disposed in the ink jet nozzle, the trajectories of the ink droplets are bent in a desired direction by the charges given to the ink droplets, and the ink droplets are ejected toward the fastener tape 6 and the fastener elements 11 so as to form a desired pattern or color.

Then, the ink droplets discharged to the fastener tape 6 are fixed to the fastener tape 6 by penetrating into fibers and the like constituting the fastener tape 6. The ink droplets discharged to the fastener element 11 are caught by the plurality of hemispherical concave portions 13 arranged in a zigzag manner on the first surface 12a of the fastener element 11, and are fixed on the first surface 12 a.

In particular, since the concave portion 13 provided in the element 11 of example 1 has a predetermined size and a capacity of the space portion as described above, each ink droplet discharged to the element 11 can be reliably received by the fixing space portion of the concave portion 13, and the ink droplet can be stably fixed to the first surface 12a of the element 11.

Therefore, it is possible to effectively prevent the ink droplets adhering to the first surface 12a of the element 11 from being mixed with each other. In the fastener element 11 of example 1, the second concave portion 13b formed smaller than the first concave portion 13a is disposed in the peripheral edge portion of the body portion 11c, and the first concave portion 13a formed by cutting off a part of the hemisphere is disposed in the peripheral edge portion of the engagement head portion 11a, the peripheral edge portion of the neck portion 11b, and the peripheral edge portion of the body portion 11c, so that ink droplets can be received by the first and second concave portions 13a and 13b in the peripheral edge portion of the first surface 12a, and stable fixation can be achieved.

Thereafter, by heat-treating the slide fastener 10 having the fastener tape 6 and the fastener elements 11 to which ink droplets are attached, as shown in fig. 1, a desired pattern (for example, letters of letters) and color are continuously printed on the fastener tape 6 and the fastener elements 11, and the outline of the pattern and color is clearly and beautifully formed, thereby obtaining the slide fastener 10 having an improved appearance.

The heat treatment is performed, for example, by a treatment of passing the slide fastener 10 in a heated atmosphere, which is also referred to as dry heat treatment. In the above description, an example in which ink droplets are ejected to the slide fastener 10 having a predetermined length and heat treatment is performed is described, but in the present invention, for example, ink droplets are ejected to the continuous fastener stringer 1 which has not been cut to a predetermined length and attached, and then the continuous fastener stringer 1 is subjected to heat treatment to perform printing, and thereafter, the top stop 3, the separable bottom end stop 4, and the slider 5 are attached to the pair of fastener stringers 1 and then cut to a predetermined length, whereby the slide fastener 10 can be obtained.

In the dyeing method by the ink jet method, the case where the fastener chain 10 is colored using the dye-based ink is described, but in the present invention, the fastener chain 10 may be colored using the pigment-based ink instead of the dye-based ink. The pigment-based ink is a type of ink in which a dye is dispersed in a solvent, unlike a dye-based ink in which a dye is dissolved in a solvent, and the dye is not dissolved in a solvent. Even when the zipper 10 is colored using such pigment-based ink, ink droplets can be stably fixed to the fastener elements 11, and the pattern and color profile can be visually observed with good appearance.

In the present invention, when the fastener stringer 6 and the element 11 are colored as described above, the coloring may be performed in accordance with the form of the slide fastener 10, or in accordance with the form of the slide fastener or the form of the fastener stringer 1.

Further, the slide fastener 10 of example 1 may be dyed by post dyeing instead of the above-described dyeing by the ink jet method.

In the case of this post-dyeing, the dyeing is performed in the form of a slide fastener before the slider 5 is attached and in the form of the fastener stringer 1. For example, a slide fastener (or a fastener stringer 1) is wound in layers on a warp beam for dyeing in an overlapping manner, and the slide fastener is stored in a dyeing kettle while being wound around the warp beam, and the slide fastener is dyed in the dyeing kettle.

In this case, the slide fastener according to example 1 has a plurality of concave portions 13 formed on the first surface 12a of each element 11. Although the portion of the first surface 12a where the concave portion 13 is not disposed is visually observed to be formed as a flat surface, when observed on the order of micrometers by a microscope or the like, a high portion and a low portion are formed in the flat surface due to the formation of the concave portion 13, and the flat surface has a slight difference in level.

Accordingly, even if the slide fastener is wound in a plurality of layers on the beam in a stacked manner, a slight gap is formed between the front surface of the element 11 wound in each layer and the back surface of the element 11 wound in the subsequent layer. Therefore, when the slide fastener is dyed in the dyeing kettle, the dye can smoothly spread over the front and back surfaces of the fastener element 11 by flowing through the gap. As a result, the slide fastener can be dyed uniformly and stably in a desired color without causing color unevenness in the fastener element 11.

Further, the slide fastener 10 of example 1 can be colored by spraying the first surface 12a of the element 11. Further, the fastener element 11 may be subjected to a metal plating treatment or a surface treatment in which the fastener chain 1 is subjected to a vapor deposition treatment in a predetermined environment (for example, an aluminum environment) to form a coating film on the surface of the fastener element 11. Further, the surface of the element 11 may be subjected to a surface treatment for bonding a sheet-like film by thermal transfer.

When the slide fastener 10 of example 1 is subjected to the surface treatment such as the painting treatment by spraying, the metal plating treatment, and the vapor deposition treatment as described above, since the plurality of concave portions 13 are disposed on the first surface 12a of each element 11, and a fine fixing space portion having a predetermined volume is formed in each concave portion 13, a part of the sprayed film or the coating film enters the fixing space portion, and the fixing is reliably performed. Accordingly, the strength of fixing the first surface 12a of the element 11 and the sprayed film or coating formed on the first surface 12a can be greatly increased, and therefore, the sprayed film or coating formed on the element 11 can be made less likely to peel off.

In the dyeing and spraying, dyeing means that a dye prints on the surface of the resin and the inside near the surface, and spraying means that colors are laminated on the surface. Therefore, when the fastener tape and the fastener elements are dyed, it is preferable that the fastener tape and the fastener elements are made of a material printed with the same dye. For example, when the material of the fastener tape is a polyester resin, it is preferable to use a polyester resin or a polyethylene terephthalate as the fastener elements, and when the material of the fastener tape is a polyamide resin, it is preferable to use a polyamide resin as the fastener elements.

In addition, when the slide fastener 10 of example 1 is subjected to the surface treatment for bonding the sheet-like films by thermal transfer, since the plurality of concave portions 13 are disposed on the first surface 12a of each element 11 and the minute fixing space portion having a predetermined volume is formed in each concave portion 13, the adhesive enters the fixing space portion and the fixing is reliably performed. Accordingly, since the adhesion strength between the first surface 12a of the element 11 and the film adhered to the first surface 12a can be greatly increased, the film adhered to the first surface 12a of the element 11 can be made less likely to peel off.

In addition, in the slide fastener 10 according to example 1, the case where the concave portion 13 is formed only on the first surface 12a of the element 11 is described. However, the present invention is not limited to this, and the hemispherical recess 13 may be formed not on the first surface 12a of the element 11 but only on the second surface 12b on the opposite side thereof, or may be formed on both the first surface 12a and the second surface 12 b.

For example, when the hemispherical concave portions 13 are formed on both the first surface 12a and the second surface 12b of the fastener element 11, it is possible to easily color a desired pattern (for example, letters) and color on the outer surface (the first surface 12 a) side of the fastener tape 6 and the fastener element 11 and also on the back surface (the second surface 12 b) side of the fastener tape 6 and the fastener element 11 by an ink jet method as shown in fig. 1.

In the slide fastener 10 according to example 1, the element 11 has a symmetrical shape on the front side and the back side of the fastener tape 6, but in the present invention, the element 11 may have different shapes on the front side and the back side of the fastener tape 6.

For example, as in the modification of embodiment 1 shown in fig. 6 and 7, in the slide fastener 20 according to this modification, the fastener elements 21 have different shapes on the front side and the back side of the fastener tape 6. That is, the half portion of the element 21 disposed on the fastener tape front surface side (see fig. 7) has the trunk portion 11c, the neck portion 11b, and the coupling head portion 11a, as in the above embodiment 1, but the half portion of the element 21 disposed on the fastener tape back surface side (see fig. 6) has the trunk portion 21c fixed to the fastener tape 6, and the substantially triangular head portion 21a extending from the trunk portion 21c to the fastener tape outside. In this case, the surfaces of the stem portion 11c, the neck portion 11b, and the coupling head portion 11a disposed on the front side of the fastener tape become the first surface 22a, and the surfaces of the stem portion 21c and the head portion 21a disposed on the back side of the fastener tape become the second surface 22 b.

In addition, the plurality of concave portions 13 are arranged in a zigzag manner on both the first surface 22a and the second surface 22b of the element 21 according to the modification, and the concave portions 13 arranged on the first and second surfaces 22a, 22b are formed in a hemispherical shape having the same size. In this case, the concave portions 13 arranged on the first and second surfaces 22a, 22b are arranged every 1mm²The area is preferably 1 to 25, more preferably 9 to 16.

The recessed portions 13 (excluding the recessed portions in which a part of the recessed portions 13 is cut) disposed on the first and second surfaces 22a and 22b have a thickness of 0.002mm³Above 0.27mm³A volume of 0.05mm or more and 0.5mm or less. In addition, the interval between the mutually adjacent recesses 13 on the first and second surfaces 22a, 22b is set to be 0.05mm to 0.3 mm.

When coloring both the front and back surfaces of the fastener tape 6 and the element 21 by the ink jet method with respect to the slide fastener 20 having the modified example of the element 21 in which the concave portions 13 are formed on the first and second surfaces 22a, 22b under such conditions, the ink droplets discharged onto the first surface 22a of the element 21 can be received by the plurality of hemispherical concave portions 13 arranged in the zigzag manner and stably fixed to the first surface 22a, as in example 1. Similarly, the ink droplets ejected onto the second surface 22b of the fastener element 21 can be received by the plurality of hemispherical concave portions 13 arranged in a zigzag manner, and can be stably fixed to the second surface 22 b.

Thereafter, by heat-treating the slide fastener 20 having ink droplets adhered to both the front and back surfaces of the fastener tape 6 and the element 21, the desired pattern and color can be continuously printed on both the front and back surfaces of the fastener tape 6 and the element 21, and the outline of the pattern and color can be clearly and beautifully formed. The design of the pattern is not particularly limited, and the pattern includes a pattern formed of 2 or more colors.

On the other hand, in the case of dyeing the slide fastener for the slide fastener 20 relating to the modification as described above by post-dyeing, since the plurality of concave portions 13 are formed in the entire surface of the first surface 22a and the second surface 22b of each element 21, the dye can be more smoothly spread over the surface and the back surface of the element 21 when the slide fastener is wound around a warp beam and dyed in a dyeing kettle. Therefore, the slide fastener can be dyed uniformly and stably in a desired color without causing color unevenness in the fastener elements 21.

Further, in the case where the first and second surfaces 22a and 22b of the fastener element 21 are subjected to surface treatment such as coloring treatment by spraying, metal plating treatment, or vapor deposition treatment, or surface treatment for bonding a sheet-like film by thermal transfer, with respect to the slide fastener 20 according to the modification, the fixing strength or adhesive strength of the sprayed film, coating film, or film disposed on the first and second surfaces 22a and 22b can be increased, and the sprayed film, coating film, or film can be made difficult to peel off from the first and second surfaces 22a and 22 b.

In the slide fastener 20, the half portion on the first surface 22a side and the half portion on the second surface 22b side of the element 21 are different in shape from each other, and thus different impressions can be given to the user.

In addition, the recess 13 is not formed on the face on the second surface 22b side (see fig. 6) in the coupling head portion 11a arranged on the fastener tape surface side and the face on the first surface 22a side (see fig. 7) in the head portion 21a arranged on the fastener tape back side. This is to ensure strength against the force in the fastener tape front-back direction by bringing the surface on the second surface 22b side of the coupling head 11a and the surface on the first surface 22a side of the head 21a of the coupling partner into contact with each other over a larger area when the right and left elements 21 are coupled.

Example 2

Fig. 8 is an enlarged perspective view of the fastener elements of the slide fastener according to example 2. Fig. 9 is a front view of the fastener element, and fig. 10 is a sectional view of the fastener element.

The slide fastener 30 according to example 2 is configured substantially in the same manner as the slide fastener 10 according to example 1, except that a plurality of hemispherical convex portions 33 are provided on the first surface 32a of each element 31 instead of the plurality of hemispherical concave portions 13 provided on the element 11 according to example 1.

Therefore, in embodiment 2, the configuration of the plurality of protrusions 33 provided on the first surface 32a of each element 31 is mainly described, and the same reference numerals are used for parts and components having the same configuration as those of the slide fastener 10 of embodiment 1, and the description thereof is omitted. In addition, in the same manner as in examples 3 to 5 described later, the same reference numerals are used for parts and components having the same configurations as those of the slide fastener 10 of example 1 described above, and the description thereof will be omitted.

In each element 31 of example 2, a plurality of hemispherical convex portions 33 having the same shape and size are arranged in a zigzag manner substantially over the entire first surface 32 a. Further, if these convex portions 33 have similar shapes, they may be formed in different sizes. The shape of the convex portion 33 is not limited to a hemispherical shape, and a conical shape or a truncated conical shape may be employed.

In this case, a convex portion 33 is provided on each element 31Every 1mm²The area is arranged in a ratio of 1 to 25. Particularly, when coloring is performed with a resolution of 180dpi by an ink jet method, it is preferable to arrange the coloring at a ratio of 9 to 16.

In the element 31 of example 2, the convex portions 33 are formed on the first surfaces 32a, whereby a space is formed between a plane connecting the apexes of the convex portions 33 and the flat first surfaces 32a of the element 31. Such a space portion formed in example 2 functions as a fixing space portion for catching and fixing ink droplets when the fastener element 31 is colored by an ink jet method, and functions as a fixing space portion for allowing a dye to flow over the first surface 32a of the fastener element 31 when the fastener chain is dyed by post dyeing, for example.

In this case, the volume of the fixation space portion formed with respect to one convex portion 33 is set to 0.002mm³Above 0.27mm³The following. Here, the volume of the fixation space formed by one convex portion 33 is, for example, a value obtained by calculating the volume of the fixation space in a predetermined region and dividing the calculated volume of the fixation space by the number of convex portions 33 arranged in the predetermined region.

Further, the diameter of the first surface 32a of each convex portion 33 arranged on the first surface 32a is set to be 0.05mm to 0.5mm, and the interval between the convex portions 33 adjacent to each other is set to be 0.05mm to 0.3 mm.

When the fastener tape 6 and the fastener element 31 are colored with a resolution of 180dpi by the ink jet method with respect to the fastener chain 30 of example 2 having the fastener element 31 in which the convex portions 33 are formed on the first surface 32a under such conditions, the ink droplets discharged onto the first surface 32a of the fastener element 31 can be received by the fixing space portion of a predetermined capacity formed around each of the convex portions 33 arranged in a zigzag manner, and can be stably fixed to the first surface 32a of the fastener element 31. Therefore, it is possible to effectively prevent the immediately adjacent ink droplets adhering to the first surface 32a from mixing with each other.

Thereafter, by heat-treating the slide fastener 30 having the ink droplets adhered to the fastener tape 6 and the fastener elements 31, it is possible to obtain the slide fastener 30 in which a desired pattern and color are continuously added to the fastener tape 6 and the fastener elements 31, the outline of the pattern and color is clearly and beautifully formed, and the appearance is improved.

On the other hand, in the case of dyeing the slide fastener for the slide fastener 30 according to example 2 by post dyeing, since the permanent space portion having a predetermined volume is disposed around each convex portion 33 on the first surface 32a of each element 31, the dye can be more smoothly spread over the surface and the back surface of the element 31 when the slide fastener is wound around a beam and dyed in a dyeing kettle. Therefore, the slide fastener can be dyed uniformly and stably in a desired color without causing color unevenness in the fastener element 31.

Further, in the case where the surface treatment such as the coloring treatment by spraying, the metal plating treatment, the vapor deposition treatment, or the like, or the surface treatment for bonding the sheet-like film by thermal transfer is performed on the first surface 32a of the fastener element 31 with respect to the slide fastener 30 according to example 2, since the fixing space portion having a predetermined volume is disposed around each convex portion 33 on the first surface 32a of each fastener element 31, the fixing strength or the adhesive strength of the first surface 32a and the sprayed film, the coating film, or the film formed on the first surface 32a is improved, and the sprayed film, the coating film, or the film can be made difficult to peel off from the first surface 32 a.

Example 3

Fig. 11 is an enlarged perspective view of a fastener element of the slide fastener according to example 3, and fig. 12 is a front view of the element.

In the slide fastener 40 according to embodiment 3, a plurality of groove-like recessed portions 43 formed in parallel to the fastener tape width direction of the fastener tape 6 are provided in the first surface 42a of each element 41, instead of the plurality of hemispherical recessed portions 13 provided in the element 11 of embodiment 1 described above. The slide fastener 40 according to embodiment 3 has substantially the same configuration as the slide fastener 10 according to embodiment 1 described above, except that the groove-like recessed portion 43 as described above is provided on the first surface 42a of the element 41.

In each element 41 of example 3, a plurality of groove-shaped recessed portions 43 parallel to the fastener tape width direction are arranged substantially over the entire first surface 42a with a predetermined interval therebetween. In this case, each of the groove-shaped recesses 43 has a semicircular cross section, and the groove widths of the recesses 43 are set to be equal to each other. In example 3, the space formed inside the concave portions 43 functions as a fixation space. In the case of embodiment 3, the convex portions may be regarded as the gaps between the concave portions 43, and a plurality of ridge-shaped convex portions parallel to the fastener tape width direction may be arranged on the first surface 42a of the fastener element 41.

In the present invention, the groove-shaped recesses 43 may have different sizes if they have similar cross-sectional shapes. The cross-sectional shape of the groove-like recess 43 is not limited to a semicircular shape, and a triangular shape or a rectangular shape may be used.

In this case, the groove-like recessed portions 43 arranged in the fastener elements 41 are arranged at intervals of 1mm as shown by imaginary lines in fig. 12²The area is arranged in a ratio of 1 to 25. That is, the groove-like recessed portions 43 are arranged at an interval of 1mm in the longitudinal direction of the fastener tape at a ratio of 1 to 25. Particularly, when coloring with a resolution of 180dpi by an ink jet method, the groove-like recessed portions 43 are preferably arranged at a ratio of 3 to 4 at intervals of 1 mm.

In the fastener element 41 according to example 3, the width of each groove-shaped recess 43 is set to be 0.05mm to 0.5mm, and the interval between the groove-shaped recesses 43 is set to be 0.05mm to 0.3 mm.

When the fastener tape 6 and the fastener elements 41 are colored with a resolution of 180dpi by the ink jet method with respect to the fastener chain 40 of example 3 having the fastener elements 41 in which the plurality of groove-shaped recessed portions 43 are formed on the first surface 42a under such conditions, ink droplets discharged onto the first surface 42a of the fastener elements 41 can be received by the fixing space portions of the plurality of groove-shaped recessed portions 43 arranged parallel to the fastener tape width direction, and can be stably fixed to the first surface 42a of the fastener elements 41. Therefore, it is possible to effectively prevent the immediately adjacent ink droplets adhering to the first surface 42a from mixing with each other.

Thereafter, by heat-treating the slide fastener 40 having the ink droplets adhered to the fastener tape 6 and the fastener elements 41, a desired pattern and color are continuously added to the fastener tape 6 and the fastener elements 41, and the outline of the pattern and color is clearly and beautifully formed, so that the slide fastener 40 having an improved appearance can be obtained.

On the other hand, in the case of dyeing the slide fastener for the slide fastener 40 according to example 3 by post-dyeing, since the plurality of concave portions 43 in the groove shape as described above are formed on the first surface 42a of each element 41, the dye can be more smoothly spread over the surface and the back surface of the element 41 when the slide fastener is wound around a beam and dyed in a dyeing kettle. Therefore, the slide fastener can be dyed uniformly and stably in a desired color without causing color unevenness in the fastener element 41.

Further, in the case where the surface treatment such as the coloring treatment by spraying, the metal plating treatment, the vapor deposition treatment, or the like of the first surface 42a of the element 41 or the surface treatment of adhering the sheet-like film by thermal transfer is performed on the first surface 42a of the element 41 with respect to the slide fastener 40 according to example 3, the plurality of groove-like concave portions 43 are formed on the first surface 42a of each element 41, so that the fixing strength or the adhesion strength of the first surface 42a and the sprayed film, the coating film, or the film formed on the first surface 42a is improved, and the sprayed film, the coating film, or the film can be made difficult to peel off from the first surface 42 a.

Example 4

Fig. 13 is an enlarged perspective view of the fastener elements of the slide fastener according to example 4.

In the slide fastener 50 according to example 4, a plurality of groove-shaped recessed portions 53 parallel to the fastener tape longitudinal direction are provided on the first surface 52a of each element 51 instead of the plurality of groove-shaped recessed portions 43 parallel to the fastener tape width direction in the element 41 of example 3 described above. The slide fastener 50 according to embodiment 4 has substantially the same configuration as the slide fastener 40 according to embodiment 3 described above, except that the groove-like recess 53 is provided in the longitudinal direction of the fastener tape.

That is, in each element 51 of embodiment 4, a plurality of groove-shaped recessed portions 53 parallel to the longitudinal direction of the fastener tape are arranged substantially over the entire first surface 52a with a predetermined interval therebetween. In this case, each of the groove-shaped recesses 53 has a semicircular cross section, and the groove widths of the recesses 53 are set to be the same. In example 4, the space formed inside the concave sections 53 functions as a fixation space.

In this case, the groove-like recessed portion 53 provided in each element 51 is formed at every 1mm²The area is arranged at a ratio of 1 to 25 (i.e., at a ratio of 1 to 25 at intervals of 1mm in the width direction of the fastener tape). In particular, when coloring is performed with a resolution of 180dpi by an ink jet method, the concave portions 53 are preferably arranged at a ratio of 3 to 4.

In the fastener element 51 of example 4, the width of each groove-shaped recess 53 is set to be 0.05mm to 0.5mm, and the interval between the groove-shaped recesses 53 is set to be 0.05mm to 0.3 mm.

When the fastener tape 6 and the fastener elements 51 are colored with a resolution of 180dpi by the ink jet method with respect to the fastener chain 50 of example 4 having the fastener elements 51 in which the plurality of groove-shaped recesses 53 are formed on the first surface 52a under such conditions, ink droplets discharged onto the first surface 52a of the fastener elements 51 can be received by the plurality of groove-shaped recesses 53 arranged parallel to the longitudinal direction of the fastener tape, and the ink droplets can be stably fixed to the first surface 52a of the fastener elements 51. Therefore, it is possible to effectively prevent the immediately adjacent ink droplets adhering to the first surface 52a from mixing with each other.

Further, the same effects as those in embodiment 3 described above can be obtained when the slide fastener for the slide fastener 50 according to embodiment 4 is dyed by post dyeing, when the slide fastener 50 is subjected to coloring treatment by spraying the first surface 52a of the fastener element 51, or when the first surface 52a of the fastener element 51 is subjected to surface treatment such as plating treatment or vapor deposition treatment, or surface treatment by bonding a sheet-like film by thermal transfer. The arrangement direction of the groove-like recessed portions 43 and 53 is not limited to the direction parallel to the fastener tape width direction or the fastener tape longitudinal direction, and the recessed portions 43 and 53 may be arranged in a direction inclined at a predetermined angle with respect to the fastener tape width direction, for example.

Example 5

Fig. 14 is an enlarged front view of the fastener elements of the slide fastener according to example 5.

In the slide fastener 60 according to example 5, a plurality of square-hammer-shaped recesses 63 are provided in the first surface 62a of each element 61, instead of the plurality of hemispherical recesses 13 provided in the element 11 of example 1 described above.

That is, in each element 61 of example 5, a plurality of recesses 63 in the shape of square hammers having the same size are arranged in a zigzag manner on the first surface 62 a. In example 5, the space formed inside the concave portions 63 functions as a fixation space.

In this case, the concave portions 63 provided on the first surface 62a are all formed in the same shape and size to every 1mm²The area is preferably 1 to 25, more preferably 9 to 16Is configured. Further, each of the concave portions 63 disposed on the first surface 62a has a thickness of 0.002mm³Above 0.27mm³The volume of which is set to 0.05mm to 0.5mm, and the length of one side of the first surface 62a of the recess 63.

When the fastener tape 6 and the fastener element 61 are colored with a resolution of 180dpi by the ink jet method with respect to the fastener chain 60 of example 5 having the fastener element 61 with the plurality of recesses 63 in the shape of rectangular hammers formed on the first surface 62a under the above-described conditions, ink droplets discharged onto the first surface 62a of the fastener element 61 can be received by the plurality of recesses 63 in the shape of rectangular hammers, and the ink droplets can be stably fixed to the first surface 62a of the fastener element 61. Therefore, it is possible to effectively prevent the closely adjacent ink droplets adhering to the tooth surface from mixing with each other.

On the other hand, when the slide fastener for the slide fastener 60 according to example 5 is dyed by post-dyeing, a plurality of recesses 63 in a square-rectangular hammer shape are formed in the first surface 62a of each element 61, and when a portion of the first surface 62a where the recesses 63 are not arranged is observed on a micrometer scale with a microscope or the like, a minute step is formed in the plane.

Therefore, even if the slide fastener is wound in a plurality of layers on the beam in a stacked manner, a small gap is formed between the surface of the element 61 wound in each layer and the back surface of the element 61 wound in the next layer. Therefore, when the slide fastener is dyed in the dyeing kettle, the dye can be smoothly spread over the front and back surfaces of the fastener element 61. Therefore, the slide fastener can be dyed uniformly and stably in a desired color without causing color unevenness in the fastener elements 61.

Further, in the case where the painting treatment of the spray coating of the first surface 62a of the element 61 by the discharge is performed to the slide fastener 60 according to example 5, or the surface treatment such as the metal plating treatment or the vapor deposition treatment is performed to the first surface 62a of the element 61, or the surface treatment of bonding the sheet-like film by the thermal transfer is performed, the fixing strength or the adhesive strength of the spray coating film, the coating film, or the film can be improved and the spray coating film, the coating film, or the film can be made difficult to peel off from the first surface 62a, as in example 1 described above.

In the above-described embodiments 1 to 5, the fastener tapes 6 and the fastener elements 11 to 61 are colored with respect to the slide fasteners 10 to 60 by an ink jet method. However, in the slide fasteners 10 to 60 according to the present invention, for example, concave portions or convex portions having the same shape (or similar shape) as the concave portions or convex portions formed in the fastener elements 11 to 61 may be provided on the first surface and/or the second surface of the upper stopper 3 and the separable bottom end stop 4 under the same conditions as the fastener elements 11 to 61.

Accordingly, when the fastener tapes 6 and the fastener elements 11 to 61 of the fastener chains 10 to 60 are colored by the ink jet method, the upper stopper 3 and the separable bottom end stop 4 can be colored by the ink jet method. In this case, a desired pattern or color can be added to the upper stopper 3 and the separable bottom end stop 4 so as to be continuous from the fastener tape 6 and the fastener elements 11 to 61, and the outline of the pattern or color can be clearly and beautifully formed. Therefore, as shown in fig. 15, for example, a pattern (for example, letters) and a color can be beautifully and stably imparted to the fastener tape 6, the fastener element 11, the upper stop 3, or the separable bottom end stop 4.

Similarly, in the slide fasteners 10 to 60 according to the present invention, the first surface and/or the second surface of the slider may be provided with the concave portions or the convex portions having the same shape (or similar shape) as the concave portions or the convex portions formed in the fastener elements 11 to 61 under the same conditions as the fastener elements 11 to 61. In this case, as the slider, for example, as shown in fig. 16, it is preferable to use a slider 8 in which a pull tab is rotatably attached to a side surface of the slider and an upper wing plate is easily exposed to the surface (in some cases, this is called a flat slider).

Accordingly, when coloring is performed also on the slider 8 by the ink jet method, as shown in fig. 16, a desired pattern (for example, letters of letters) and color can be added to the slider 8 so as to be continuous from the fastener tape 6 and the fastener elements 11, and the outline of the pattern and color can be clearly and beautifully formed. Therefore, the fastener tape 6, the element 11, and the slider 8 can be provided with such a pattern and color as to be beautiful and stable.

In the above-described embodiments, the concave portions or the convex portions on the element surface are formed at the same time as the injection molding or the die-casting of the element, but the present invention is not limited to this, and the concave portions or the convex portions may be formed by post-processing after the element is molded, for example. In this case, as the post-processing, a processing of pushing a roller having an unevenness against the fastener element or a processing by cutting can be used.

In the case of using a metal element, in order to facilitate fixation of the coloring material to the element, a coating layer can be applied to the metal surface of the element by coating a synthetic resin or the like. In this case, the resin layer formed on the element surface does not fill the fixing space portion of the concave portion or the convex portion of the element surface even after the coating, and therefore, when the coloring (printing) by the coloring material is performed thereafter, the coloring material can be stably fixed in the fixing space portion. Further, by using a transparent resin layer as the resin layer formed on the surface of the element, the colored element can be given a metallic unique color tone.

Description of the symbols

1: a zipper strip; 2: dentition; 3: an upper stop; 4: separating the insert; 5: a slider; 6: a zipper tape; 6 a: a fastener tape main body portion; 6 b: a tooth mounting portion; 6 c: a core rope portion; 8: a slider; 10: a zipper; 11: a zipper tooth; 11 a: an engagement head; 11 b: a neck portion; 11 c: a trunk portion; 11 d: a shoulder portion; 11 e: a groove; 12 a: a first surface; 12 b: a second surface; 13: a recess; 13 a: a first recess; 13 b: a second recess; 20: a zipper; 21: a zipper tooth; 21 a: a head portion; 21 c: a trunk portion; 22 a: a first surface; 22 b: a second surface; 30: a zipper; 31: a zipper tooth; 32 a: a first surface; 33: a convex portion; 40: a zipper; 41: a zipper tooth; 42 a: a first surface; 43: a recess; 50: a zipper; 51: a zipper tooth; 52 a: a first surface; 53: a recess; 60: a zipper; 61: a zipper tooth; 62 a: a first surface; 63: a recess.

Claims (10)

1. A fastener stringer (1) having a fastener tape (6) and a plurality of fastener elements (11, 21, 31, 61) attached along one side edge portion of the fastener tape (6), and at least one surface of each of the fastener elements (11, 21, 31, 61) being colored,

each of the fastener elements (11, 21, 31, 61) has a trunk portion (11c) fixed to the fastener tape (6), a neck portion (11b) extending outward from the trunk portion (11c), and an engagement head portion (11a) disposed at the tip end of the neck portion (11b),

a plurality of concave parts (13, 63) or convex parts (33) are regularly arranged on the surface of the fastener elements (11, 21, 31, 61) subjected to the coloring treatment,

a predetermined interval is provided between the mutually adjacent concave portions (13, 63) and between the mutually adjacent convex portions (33),

a fine fixation space for fixing a dye or a pigment is constituted by a space formed in each of the concave sections (13, 63) and a plurality of spaces formed around each of the convex sections (33) between the adjacent convex sections (33).

2. Slide fastener stringer according to claim 1, wherein said recessed portions (13, 63) or projecting portions (33) are provided at every 1mm²1 to 25 in proportion.

3. The fastener stringer according to claim 1, wherein the concave portion (13, 63) or the convex portion (33) is formed in a hemispherical shape, a conical shape, or a truncated conical shape.

4. The fastener stringer according to claim 1, wherein a volume of the space portion formed with respect to one of the concave portion (13, 63) or the convex portion (33) is set to 0.002mm³Above 0.027mm³The following.

5. The fastener stringer according to claim 1, wherein the plurality of concave portions (13, 63) or convex portions (33) disposed on the one surface of the fastener elements (11, 21, 31, 61) are formed in the same shape or similar shapes to each other.

6. The fastener stringer according to claim 1, wherein the plurality of concave portions (13, 63) or convex portions (33) arranged on the one surface of the fastener element (11, 21, 31, 61) are formed in a zigzag shape.

7. The fastener stringer according to claim 1, wherein the fastener elements are colored by an ink-jet method.

8. The fastener stringer according to claim 1, wherein a pattern is formed on the fastener elements (11, 21, 31, 61) and the fastener tape (6) by coloring.

9. The fastener stringer according to claim 1, wherein the fastener elements (11, 21, 31, 61) are colored by post-dyeing.

10. A slide fastener, characterized by comprising the fastener stringer (1) according to claim 1.