JP3901315B2 - Mechanical hook male side sheet material - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a male side sheet material of a mechanical hook, and more particularly to a male side sheet material of a mechanical hook that can exhibit high engagement force in all directions of an adhesive surface and can impart directionality to peeling.
[0002]
[Prior art and problems to be solved by the invention]
Usually, the mechanical hook adheres / peels a male side sheet material having a male engaging portion and a female side sheet material having a looped female engaging portion, or adheres / peels male side sheet materials. Therefore, it functions as a fastening device and is widely used in the fields of disposable diapers and clothing.
As a male side sheet material of such a mechanical hook, Japanese Patent Publication No. 8-508910 discloses a stem (stem part) protruding from a support part (base material sheet) and a stem tip opposite to the support part. A plurality of hooks made of a disc-shaped head are arranged at high density on a support portion. However, since the direction of the upper surface of the head of these hooks is not directional on the bonding surface, the male side sheet material has a drawback that the engagement force / detachment feeling cannot be changed by the difference in the direction of the bonding surface. Therefore, when applied to a diaper, this male side sheet material gives a high engagement force in the waistline direction and cannot give a soft detachment feeling in the direction in which the tape is peeled off (direction perpendicular to the waistline direction). . In addition, this male side sheet material has a disk-like head with no corners and a large angle between the head and the stem (axis), so the looped female engagement part or male engagement of the bonding partner material There is also a disadvantage that the engagement with the portion is bad and a high engagement force cannot be applied.
[0003]
Japanese Patent Application Laid-Open No. 2-5947 discloses a male sheet material in which a head of a male engaging portion is formed in a bowl shape. However, this male side sheet material has a drawback in that a sufficient engagement force cannot be applied to all directions of the bonding surface because the hook-shaped head does not protrude so as to cover the upper end of the trunk.
[0004]
Further, Japanese Patent Laid-Open No. 6-133808 discloses a male side sheet material having a male engaging portion having a T-shaped or L-shaped cross section. However, this male side sheet material also has a large angle between the head and the column (stem), and the head does not protrude in the entire circumferential direction of the stem, so that sufficient engagement force can be obtained in all directions of the bonding surface. There is a disadvantage of not.
[0005]
Accordingly, an object of the present invention is to provide a male side sheet material of a mechanical hook that can exhibit high engagement force in all directions of an adhesive surface and can impart directionality to peeling.
[0006]
[Means for Solving the Problems]
The present invention relates to a male hook-side sheet material of a mechanical hook in which male engaging portions are arranged at high density on a base sheet, and the male engaging portion includes a trunk portion protruding from the base sheet, It becomes the upper end of the stem portion and a head roof shape formed over the stem portion, the head, the upper surface is substantially parallel to the substrate sheet, a and parallel to the first lateral direction of the head A pair of eaves-like portions, and a pair of eaves-like portions parallel to the second lateral direction perpendicular to the first lateral direction, wherein the head is parallel to the second lateral direction. the lower surface and the lower surface of the angle formed and the first lateral parallel the Nokijo portion Ri Do and acute and vertical line with respect to the base sheet is formed into so that a parallel to the base sheet The first lateral length of the head and the second lateral length perpendicular thereto are respectively , Longer than the first lateral length of the trunk parallel to the first lateral direction and the second lateral length perpendicular to the trunk, the first lateral length and the second lateral length of the trunk The above object is achieved by providing a male-side sheet material of a mechanical hook that is different, and that the first lateral length and the second lateral length of the head are different. Is.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the male side sheet | seat material of the mechanical hook of this invention is demonstrated with reference to an accompanying drawing. FIG. 1 is an enlarged perspective view showing one embodiment of a male side sheet material of a mechanical hook of the present invention, and shows only one male engaging portion. FIGS. 2 (a) and 2 (b) are respectively shown in FIG. FIG. 3 is an enlarged side view of the male engagement portion shown in the second lateral direction and the first lateral view, and FIG. 3 omits a part of the arrangement state on the base sheet of the male engagement portion shown in FIG. FIG.
[0008]
A male hook side sheet material 1 of a mechanical hook shown in FIGS. 1 and 2 is formed by arranging male engagement portions 3 on a base sheet 2 at a high density. Such a configuration is the same as that of a conventionally known male-side sheet material of a mechanical hook.
[0009]
And Thus, in this embodiment, the male engaging portion 3 is provided with a stem 4 which protrudes from the base sheet 2, the roof shape formed to cover the stem portion 4 to the upper end of the stem portion 4 made from the head 5 which, the head 5 has its upper surface is substantially parallel to the said base sheet 2, the second lateral pair of Nokijo portion 6 (head which faces the head 5 above Canon root shape Of the pair of eaves parallel to the base sheet 2 and the vertical line with respect to the base sheet 2 is formed to be an acute angle, and the length of the head 5 in the first lateral direction and perpendicular thereto. The length in the second lateral direction is longer than the length in the first lateral direction of the trunk 4 parallel to the first lateral direction and the length in the second lateral direction perpendicular thereto, respectively. The length in the direction is different from the length in the second lateral direction, and the length in the first lateral direction of the head 5 is different. It is different from To the length of the second lateral is.
[0010]
More specifically, the trunk 4 has a rectangular cross section, and its axis is parallel to a vertical line with respect to the base sheet 2. The head 5 has a rectangular shape in plan view.
[0011]
Angle between the pair of Nokijo portions 6 each lower surface and the vertical line with respect to the substrate sheet 2 in the head 5 of the upper wire carrier root shape (theta) is preferably less than 90 °, more preferably 30 to It is less than 90 °. If the angle (θ) is within this range, the male engaging portion 3 can be prevented from sufficiently pulling off the looped female engaging portion of the bonding partner material. When the angle (θ) is less than 30 °, the engagement force increases rapidly, but it is difficult to wipe off the burr feeling at the time of attachment and detachment, and the looped female engagement portion of the bonding partner material is easily damaged, so that it can be repeatedly detached. Inferior. Further, when the angle (θ) is 90 ° or more, the engagement force is significantly reduced.
[0012]
The lengths (W, C) of the head 5 in the first lateral direction and the second lateral direction are preferably 0 than the lengths (D, B) of the trunk portion 4 in the first lateral direction and the second lateral direction, respectively. .01 to 1 mm longer, more preferably 0.02 to 0.6 mm longer. If the difference in length is less than 0.01 mm, the looped female type engaging portion of the bonding partner material is easily detached from the head 5, and if it exceeds 1.0 mm, the looped female type of the bonding partner material is reversed. The engaging portion is over-engaged and is difficult to come off, and the space occupied by one head 5 is excessive and the number of the male engaging portions 3 is insufficient.
[0013]
The length (D, B) of the trunk portion 4 in the first lateral direction and the second lateral direction is preferably 0.05 to 0.8 mm, more preferably 0.1 to 0.5 mm. Since the trunk | drum 4 which each length (D, B) exists in this range has sufficient thickness with respect to a peeling direction, it is hard to fall down and high engagement force is given to a mechanical hook. The trunk 4 is fragile when its length (D, B) is less than 0.05 mm, and is prone to jerky when it is longer than 0.8 mm.
[0014]
The length (D) in the first lateral direction of the trunk is preferably 0.01 to 0.5 mm longer, more preferably 0.02 to 0.3 mm longer than the second lateral length (B). If the difference in length is less than 0.01 mm, it is difficult to give sufficient directionality to peeling, and if it exceeds 0.5 mm, it tends to collapse in the second lateral direction when peeling in the first lateral direction. A sufficient engagement force cannot be obtained.
[0015]
The lengths (W, C) in the first lateral direction and the second lateral direction of the head are naturally defined, but are preferably 0.1 to 1.8 mm, more preferably 0.1 to 1, respectively. .1 mm.
The first lateral length (W) of the head is preferably 0.01 to 0.5 mm longer, more preferably 0.02 to 0.3 mm longer than the second lateral length (C). If the difference in length is less than 0.01 mm, it is difficult to give sufficient directionality to peeling, and if it exceeds 0.5 mm, it tends to collapse in the second lateral direction when peeling in the first lateral direction. The loop-shaped female engagement portion is easily detached, and a sufficient engagement force cannot be obtained.
[0016]
The height (H ₁ ) of the male engagement portion 3 is preferably 0.1 to 1.5 mm, and more preferably 0.2 to 1.2 mm. Moreover, the height (H ₂ ) of the trunk portion 4 is preferably 0.05 to 1.2 mm, more preferably 0.1 to 1 mm. If the height (H ₁ ) exceeds 1.5 mm, it is difficult to obtain a thin, fine and smooth surface on the male side. When the height (H ₂ ) is lower than 0.05 mm, the insertability of the male engaging portion 3 into the looped female engaging portion of the bonding partner material is deteriorated. The difference between the height (H ₁ ) and the height (H ₂ ), that is, the thickness of the central portion of the head 5 is preferably 0.01 mm or more, more preferably 0.02 mm or more. When the thickness is less than 0.01 mm, the central portion of the head 5 becomes too thin, and the male engagement portion 3 becomes thin and tends to have insufficient engagement force.
[0017]
As shown in FIG. 3, the male engaging portions 3, 3,... Are uniformly distributed in a grid pattern on the base sheet 2, and the density is preferably 60 pieces / cm ² or more. , and still more preferably from 80 to 800 pieces / cm ^2. When the density is less than 60 / cm ^2, it is difficult to obtain a high engagement force, and it is difficult to obtain a male surface sheet material having a smooth surface. On the other hand, if the density exceeds 800 pieces / cm ² , the space between the male engaging portions 3 into which the looped female engaging portion of the bonding partner material enters is insufficient, and it is difficult to obtain a high engaging force.
[0018]
Further, the first lateral direction and the second lateral direction of the heads 5, 5,. The first lateral distance (P ₁ ) and the second lateral distance (P ₂ ) between the heads 5 and 5 vary depending on the shape and size of the head 5, but a higher engagement force is obtained. For this purpose, the interval (P ₁ ) is preferably 0.01 to 5 mm, and more preferably 0.05 to 2 mm. Further, the distance (P ₂₎ is preferably 0.01 to 5 mm, and further preferably from 0.05 to 2 mm.
[0019]
Here, the material which comprises the said male side sheet | seat material 1 is not restrict | limited in particular, A conventionally well-known thing can be used suitably. For example, olefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, nylon and polyurethane, and various thermoplastic elastomers such as styrene, olefin, urethane, ester and polyamide Used alone or in combination.
[0020]
Moreover, the manufacturing method of the male side sheet material 1 is not particularly limited. For example, the head formed by extruding the trunk 4 on the base sheet 2 and molded separately from the trunk 4. And a method of forming the male sheet material 1 by fusing 5 to the upper end of the trunk 4 by an appropriate means.
[0021]
Moreover, it is preferable that the thickness of the said base material sheet 2 is 0.01-0.5 mm, and it is still more preferable that it is 0.02-0.4 mm. When the thickness is less than 0.01 mm, the male side sheet material 1 is difficult to satisfy the physical properties of the base material as the male side sheet material, and the moldability also deteriorates. On the other hand, when the thickness exceeds 0.5 mm, the flexibility of the male side sheet material 1 is deteriorated.
[0022]
According to the male-side sheet material 1 of the mechanical hook of the present embodiment, the head 5 of the male engagement portion 3 has a corner, and the lower surface of the eaves-like portion 6 of the head 5 and the base sheet 2 Since the angle between the vertical line and the vertical line is an acute angle, the male engagement part 3 can be well engaged with the loop female engagement part of the bonding partner material, and a high engagement force can be obtained.
Further, since the head 5 protrudes from the trunk portion 4 in all directions parallel to the base sheet 2 (also parallel to the bonding surface), the male engagement portion 3 has a loop of the bonding counterpart material without directivity. Since it can engage with the female engaging part and obtain a high engaging force in all directions of the bonding surface, the male engaging part 3 has different lengths in the first lateral direction and the second lateral direction, so that it is peeled off. The directionality with respect to can be obtained.
Furthermore, the male side sheet material 1 of the present embodiment is fine because the male engaging portions 3 are finely and densely arranged on the base sheet 2 and the top surface of the head 5 is flat. Appearance, texture, and pleasant touch / feel. Furthermore, the male side sheet material 1 of the present embodiment is extremely thin and excellent in flexibility, and is excellent in attachment workability by sewing or a welder.
[0023]
The present invention is not limited to the above-described embodiments, and specific shapes, dimensions, and the like can be changed as appropriate without departing from the spirit of the present invention.
For example, in the above-described embodiment, the trunk may have an elliptical cross section, and the axis of the trunk may not be parallel to the vertical line with respect to the base sheet.
Further, in the above SL embodiment, the longitudinal direction of the neighboring Ri fit male engaging portion is changed to about 90 ° alternately, when E Kuwawa a force to rotate in a direction parallel to the bonding surface, so that the easily removed Anyway.
Furthermore, in the above embodiment, the state in which the male engaging portions are uniformly dispersed on the base sheet is not limited to the grid state, and the male engaging in each of the first lateral direction and the second lateral direction. Any state may be used as long as the interval between the parts is uniform.
[0024]
In addition, as the bonding partner material to be bonded to the male side sheet material of the mechanical hook of the present invention, a female side sheet material having a looped female type engagement portion is usually used, but the male engagement portion of the present invention. The male side sheet material which has can be used as an adhesion partner material.
Moreover, the male side sheet | seat material of the mechanical hook of this invention is especially suitable for the fastener of a disposable diaper, etc.
[0025]
【The invention's effect】
The male side sheet material of the mechanical hook of the present invention can exhibit high engagement force in all directions of the bonding surface and can impart directionality to peeling.
[Brief description of the drawings]
FIG. 1 is an enlarged perspective view showing one embodiment of a male side sheet material of a mechanical hook of the present invention, and shows only one male engagement portion.
2A and 2B are enlarged side views of the male engaging portion shown in FIG. 1 as viewed in the second lateral direction and the first lateral direction, respectively.
FIG. 3 is an enlarged plan view showing a part of the arrangement state of the male engagement portion shown in FIG. 1 on the base sheet with the base sheet omitted.
[Explanation of symbols]
1. 1. Mechanical hook male side sheet material 2. base material sheet 3. Male engagement part Executives 5. Head 6. Eaves

Claims (3)

In the male side sheet material of the mechanical hook, wherein the male engagement portions are arranged with high density on the base sheet,
It said male engaging portion is composed of a stem projecting from the substrate sheet, the head of the roof shape formed over the stem portion to the upper end of the stem portion,
The head has a pair of eaves-like portions whose upper surface is substantially parallel to the base sheet and parallel to the first lateral direction of the head, and parallel to a second lateral direction perpendicular to the first lateral direction. A pair of eaves-shaped portions,
The head, the lower surface of the second lateral direction parallel to the bottom surface and the angle formed acute and Do Ri and the first lateral parallel above Nokijo portion between the vertical line with respect to the substrate sheet of the Nokijo portion There are formed on so that a parallel to the base sheet,
The first lateral length of the head and the second lateral length perpendicular to the first lateral length are the first lateral length of the trunk parallel to the first lateral direction and the second lateral length perpendicular thereto, respectively. Longer than the direction length,
The first lateral length and the second lateral length of the trunk are different, and the first lateral length and the second lateral length of the head are different. Male side sheet material for mechanical hooks. In the upper Kihe head, the angle between the second horizontal and parallel to the lower surface and the vertical line with respect to the substrate sheet of the Nokijo portion is less than 90 °,
The lengths of the first lateral direction and the second lateral direction of the head are 0.01 to 1 mm longer than the lengths of the trunk in the first lateral direction and the second lateral direction, respectively.
The length of the trunk in the first lateral direction and the second lateral direction is 0.05 to 0.8 mm, respectively, and the length in the first lateral direction of the trunk is 0.01 than the length in the second lateral direction. ~ 0.5mm longer,
The length in the first lateral direction and the second lateral direction of the head is 0.1 to 1.8 mm, respectively, and the length in the first lateral direction of the head is 0.01 than the length in the second lateral direction. ~ 0.5mm longer,
The male of the mechanical hook according to claim 1, wherein the male engaging portion has a height of 0.1 to 1.5 mm, and the trunk has a height of 0.05 to 1.2 mm. Side sheet material. 3. The male side sheet of the mechanical hook according to claim 1, wherein the male engagement portion is uniformly dispersed on the base sheet and has a density of 60 pieces / cm ² or more. Wood.

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