JP4109642B2 - Knitted fabric for hook-and-loop fastener - Google Patents

Description

  The present invention relates to a knitted fabric for a hook-and-loop fastener used on the female member side of a hook-and-loop fastener such as a paper diaper.

  In recent years, paper diapers are often used in place of conventional diapers made of textile fabric, and an adhesive tape was originally used as a waist fixing tool for these paper diapers. However, the adhesive strength of the adhesive tape is weak, and there is a problem that it is difficult to use by sticking to other parts due to its adhesiveness. Recently, surface fasteners have been used.

The hook-and-loop fasteners used for disposable diapers are usually discarded only once or twice as long as they are ordinary disposable diapers, and it is sufficient if they can withstand several engagements. There is a demand for inexpensive disposable products.
JP 2000-175711 A JP-A-8-60503

  On the female member side of the hook-and-loop fastener used in the conventional paper diaper, a tape formed as a base material on the back surface of the tricot knitted fabric is used. This tricot knitted fabric on the female member side is made by knitting nylon fibers in a predetermined knitting pattern. However, nylon fibers are expensive in cost, and there is a demand for a knitted fabric for female members using low-cost fibers. It was. However, the knitted fabric for female members of surface fasteners other than nylon fibers has a low engagement strength with the male member and has a poor function as a surface fastener.

  The present invention has been made in view of the above-mentioned problems of the prior art, and is thin and flexible, has a high engagement force with the male member side, and is inexpensive, and has a low cost. The purpose is to provide.

  This invention forms a tricot knitted fabric using a knitting yarn made of polyester fiber, and the stitch pattern of the tricot knitted fabric is composed of a stitch pattern constituting a pile on a front surface portion, a stitch pattern constituting an intermediate portion, and a back surface portion. The stitch patterns constituting the knitting yarn are knitted by repeating a predetermined pattern, and the stitch pattern of the knitting yarn on the front surface portion and the stitch pattern of the knitting yarn on the back surface portion are substantially opposite to each other. The loop of the female member of the hook-and-loop fastener is formed by the pile of the knitting yarn on the surface portion, and the stitch pattern constituting the intermediate portion is the same as the stitch pattern on the surface portion every other stitch. It is the knitted fabric for hook-and-loop fasteners formed in.

  When the stitch pattern of the tricot knitted fabric is represented by repetition of 1 to 4 stitch positions, the stitch pattern of the surface portion is represented by repetition of 1-0 / 3-4, and the stitch pattern of the intermediate portion is 1-0 / It is represented by 0-1 repetition, and the stitch pattern on the back surface is represented by 3-3 / 0-0 repetition.

  The thickness of the knitting yarn is such that the knitting yarn constituting the surface portion of the tricot knitted fabric is a relatively thick yarn, the intermediate knitting yarn is a relatively thin yarn, and the back side knitting yarn is a medium yarn. It is the thickness of the place.

The knitted fabric for hook-and-loop fasteners of the present invention can form a knitted fabric for female members of hook-and-loop fasteners with a high engagement strength, using a low-cost polyester fiber, and can be formed at a very low cost. Can be formed. Thereby, even if it uses as an engaging part of a disposable diaper, it can have high engagement intensity | strength and can also suppress cost.
Can be formed.

  Hereinafter, a surface fastener knitted fabric according to an embodiment of the present invention will be described with reference to the drawings. 1 to 3 show an embodiment of the present invention. A female member 10 for a hook and loop fastener of this embodiment is formed on a base tape 12 such as a synthetic resin film and the surface of the base tape 12. An adhesive layer 14 made of an adhesive is provided. A tricot knitted fabric 16 made of polyester fiber is attached to the adhesive layer 14.

  As for the tricot knitted fabric 16, the pile part of the surface part F comprises the loop 20 of the female member 10 for hook-and-loop fasteners. The back surface portion B of the tricot knitted fabric 16 is affixed to the adhesive layer 14 of the base tape 12, and the knitting yarn of the surface portion F and the knitting yarn of the back surface portion B are mainly connected by the knitting yarn of the intermediate portion M.

  The tricot knitted fabric 16 has a configuration in which the stitch position number of the knitting yarn is 1 to 4 in the pattern diagram of FIG. 2 and the stitch pattern of the tricot knitted fabric is expressed by repeating the stitch positions of 1 to 4 on the surface portion F. The stitch pattern is represented by repetition of 1-0 / 3-4, the stitch pattern of the intermediate portion M is represented by repetition of 1-0 / 0-1, and the stitch pattern of the back surface portion B is 3-3 / 0-0. It is expressed by repeating.

  Thereby, for example, the knitting yarn in the stitch pattern of the front surface portion F goes from 3-4 to 1-0, whereas the knitting yarn in the stitch pattern of the back surface portion B goes from 0-0 to 3-3. A knitting pattern is formed. At this time, the knitting yarn on the front surface portion F and the knitting yarn on the back surface portion B intersect with each other with the knitting progress directions of the knitting yarns substantially opposite to each other, as shown by the region S in FIG. To be knitted. Similarly, the knitting yarn in the stitch pattern on the back surface B goes from 3-3 to 0-0 with respect to the knitting pattern in the stitch pattern on the front surface F going from 1-0 to 3-4. The patterns are also formed so as to intersect each other. This region S exists repeatedly according to the stitch pattern.

  Further, the stitch pattern constituting the intermediate portion M is such that the knitting progress direction of the knitting yarn is overlapped with each other in the same direction as shown in the region T of FIG. Is formed.

  The thickness of the knitting yarn is such that the knitting pattern of the front surface portion F is a relatively thick knitting yarn, the knitting yarn of the intermediate portion M is a thin knitting yarn, and the knitting yarn of the back surface portion B is a medium thickness. Is used.

  The tricot knitted fabric used in this embodiment uses a tricot knitting machine, and the number of gauges is preferably 10 to 18 gauges, for example. Further, although the number of knitting courses depends on the thickness of the yarn to be used, knitting at 20 to 35 courses / inch is preferable from the viewpoint of engagement with the engaging element of the male member of the hook-and-loop fastener. Further, the knitting may be performed under other conditions.

The female member loop 20 of this embodiment can be engaged with engaging elements of various shapes, and can be appropriately selected from, for example, a saddle shape, an arrowhead shape, a ribbed shape, and the like. Further, the size of the engaging element is preferably about 1 to 3 mm in height, 0.7 to 2 mm in the maximum width of the buttocks and arrowheads, and about 40 to 300 elements / cm ^{2 in} element density. When this tricot knitted fabric is engaged with a male member having an engagement element, the engagement strength is extremely high, and the fastener such as a diaper is not displaced during use after engagement, and can be repeatedly attached and detached. The resultant power will not drop.

  The use of the surface fastener knitted fabric 10 of this embodiment is preferably a disposable diaper for infants or adults, and is used for fixing a waist portion.

  The surface fastener knitted fabric 10 according to this embodiment has the knitting yarns of the front surface portion F and the back surface portion B knitted at positions where the knitting progress directions of the knitting yarns are substantially opposite to each other and intersect each other. The F knitting yarn is prevented from slipping out to the back surface side, and the pile is formed cleanly in a substantially vertical direction on the surface portion F side. On the other hand, when the knitting yarn of the back surface portion B is opposite to the above, the knitting yarn of the front surface portion F and the knitting yarn of the back surface portion B are formed in substantially the same direction. A portion of the surface B is not formed with a clean pile. In addition, the stitch pattern constituting the intermediate portion M is formed so that the knitting yarns travel in the same direction and overlap each other every other stitch with the stitch pattern of the surface portion F. Can be formed.

  Since the pile of the tricot knitted fabric 16 of this embodiment is formed cleanly perpendicularly to the surface portion F, the loop 20 as the female member of the hook and loop fastener is formed uniformly and cleanly, and the function as the female member is enhanced. The surface fastener knitted fabric 10 is flexible, has a good feeling of wear, is inexpensive, and has high engagement strength.

  The surface fastener knitted fabric of the present invention is not limited to the above-described embodiment. As shown in FIGS. 4 and 5, the stitch pattern of the knitting yarn on the back surface portion B is represented by a front surface portion F and an intermediate portion M. This stitch pattern may be the same as described above, and the stitch pattern of the back surface portion B may be 5-5 / 0-0. Also by this, the same effect as described above can be obtained. In addition, it can change suitably within the scope of the present invention.

It is a schematic longitudinal cross-sectional view of the knitted fabric for surface fasteners of one Embodiment of this invention. It is a front view which shows the knitting pattern of the surface part of the knitted fabric for surface fasteners of this embodiment, an intermediate part, and a back surface part. It is a front view which shows the knitting pattern of the knitted fabric for surface fasteners of this embodiment. It is a front view which shows the knitting pattern of the surface part of the knitted fabric for surface fasteners of this Embodiment, an intermediate part, and a back surface part. It is a front view which shows the knitting pattern of the knitted fabric for surface fasteners of other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Female member for surface fastener 12 Base material tape 14 Adhesive layer 16 Tricot knitted fabric 20 Loop

Claims (3)

  A tricot knitted fabric is formed using a knitting yarn made of polyester fiber, and the stitch pattern of the tricot knitted fabric is composed of a stitch pattern that forms a pile on the front surface portion, a stitch pattern that forms an intermediate portion, and a stitch pattern that forms the back surface portion. Are knitted by repeating a predetermined pattern, and the stitch pattern of the knitting yarn on the front surface portion and the stitch pattern of the knitting yarn on the back surface portion are knitted at a position where the knitting progress directions of the knitting yarn intersect with each other in substantially opposite directions. In rare cases, the loop of the female member of the hook and loop fastener is formed by the pile of the knitting yarn on the surface portion, and the stitch pattern constituting the intermediate portion is formed in the same manner as the stitch pattern on the surface portion every other stitch. A knitted fabric for hook-and-loop fasteners.   When the stitch pattern of the tricot knitted fabric is represented by repetition of 1 to 4 stitch positions, the stitch pattern of the surface portion is represented by repetition of 1-0 / 3-4, and the stitch pattern of the intermediate portion is 1-0 / The knitted fabric for hook-and-loop fasteners according to claim 1, wherein the knitted fabric for hook-and-loop fasteners is represented by repeating 0-1 and the stitch pattern on the back surface is represented by repeating 3-3 / 0-0. The thickness of the knitting yarn is such that the knitting yarn constituting the surface portion of the tricot knitted fabric is a relatively thick yarn, the intermediate knitting yarn is a relatively thin yarn, and the back side knitting yarn is a medium yarn. The knitted fabric for hook-and-loop fasteners according to claim 1 or 2, wherein the knitted fabric has a thickness of a height.

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