KR100724241B1 - Fastener tape manufacturing method and the structure of forming roller - Google Patents

Abstract

The present invention relates to a method of manufacturing a fastener tape and a structure of a forming roller, wherein a first forming roller (2) for manufacturing a fastener tape (1) through a synthetic resin extrusion process by a forming roller, and stepwise forming a forming roller (2). ), And the secondary forming roller (3), it is possible to be molded in more various forms such as palm tree without being limited to the hook (12) shape.

That is, in the primary forming roller 2, the molding is performed as a rough shape of the hook, and in the secondary forming roller 3, the branches 121 of the hook 12 are opened to be in the original desired shape, thereby forming a variety of shapes. It is possible to manufacture the hook (12).

In addition, the bonding sheet 13 made of foam sponge or fibrous material is passed through the forming roller together with the synthetic resin 6 during the extrusion process, thereby bonding the bonding sheet 13 to the lower surface of the base sheet 11 without any additional process. It can be combined in one piece. Therefore, manufacturing time and cost can be reduced.

Fastener tape, forming roller, forming ring, spacer ring, loop, hook

Description

FASTNER TAPE MANUFACTURING METHOD AND THE STRUCTURE OF FORMING ROLLER

1 is a manufacturing process diagram showing a first embodiment of a fastener tape manufacturing method according to the present invention;

2 is a manufacturing process drawing showing a second embodiment of the fastener tape manufacturing method according to the present invention;

3 is an enlarged perspective view showing only a forming roller used in the present invention;

Figure 4 is an enlarged perspective view showing only the hook structure of the fastener tape,

5 is a cross-sectional view of the fastener tape produced according to the present invention.

* Explanation of symbols for the main parts of the drawings

1: Fastener tape 2: 1st forming roller

3: secondary forming roller 4: cooling device

5: winding roller 6: extruded synthetic resin

7: pressure roller 11: base sheet

12 Hook 13 Bonding Sheet

21, 21 ': groove portion 22: forming ring

23: spacer ring 24: reinforcing ring

31: groove 121: eggplant

122: reinforcement rib 123: pillar

The present invention relates to a method of manufacturing a fastener tape and a structure of a forming roller, wherein the detachable fastener tape, in particular a hook-, is attached to a sheet cushion of a polyurethane foamed resin material such as a car or a furniture or to another object such as a hard plastic part. It relates to a method of manufacturing a loop fastener tape and a structure of a forming roller to be used at this time.

In general, a hook-and-loop fastener is a hook member having two fastening elements, namely an upright hook-shaped fastener element, and a fiber or fiber loop that engages the hook fastener element. It is comprised by the loop member provided with the surface provided.

That is, the fastener tape may be classified into a hook member suitable for being called a male fastener tape by having a plurality of hooks and a loop member suitable for being called a female fastener tape by being provided with a plurality of loops. The present invention relates to a method for producing a male fastener tape, also called a hook member, and to a structure of a forming roller to be used. (Hereafter, the male fastener tape is abbreviated as "fastener tape".)

Figure 4 is an enlarged perspective view showing only the hook structure of the fastener tape, Figure 5 is a cross-sectional view of the fastener tape produced by the present invention,

The fastener tape is mainly made of a synthetic resin material, and consists of a shape in which a plurality of hooks 12 are placed on the base sheet 11.

The fastener tape is molded by extruding a synthetic resin material, and the base sheet 11 and the hook 12 are preferably manufactured integrally using the same material.

The hook 12 is composed of a pillar 123 and a branch 121 for performing a locking function on a loop (not shown). The branch 121 has a hook shape and a hook, and a hook. There is a form of "palm number" (see FIG. 4) provided with two so that are symmetric with each other.

Hook-type fastener tapes are preferred over other types of fastener tapes having a mushroom shape, for example, because the hook-type fastener tapes can be more firmly engaged with the loop and have advantages in manufacturing and the like.

The loop member for hook-and-loop fastening consists of knit woven and nonwoven textiles. Nonwoven textiles are made by spinning the microfilaments of synthetic fibers such as polypropylene, polystyrene, polyvinyl chloride, polyethylene, polyamide, and spinning them into overlapping layers. The fibers are bonded to each other in any direction and a low-lying nappy layer of looped and arcuate fibers is exposed on the fabric surface.

Since nonwovens are inexpensive, they are recommended for use in loop parts of fastener tapes suitable for low-cost items, particularly disposable products such as diapers, surgical gowns, and sanitary napkins. It would be desirable to provide fastener tapes useful for very low cost, low loft nonwovens and other low loft fabrics.

On the other hand, as described above, the conventional fastener tape is formed by the hook and the base sheet at the same time through the extrusion process of the synthetic resin material, the high-temperature synthetic resin on the upper surface of the base sheet while passing through the groove portion of the molding roller The same hook as that of the groove portion is formed.

 That is, in the extrusion process, the base sheet and the hook are formed by passing a high temperature synthetic resin therebetween while the forming roller and the pressing roller, which are formed at regular intervals in the hook-shaped groove portion over the entire circumference, rotate therebetween. As the hook is formed by a forming roller that rotates in one direction, in this case, in order for the formed hook to be naturally separated from the groove portion, the groove portion must be limitedly designed so that no interference shape occurs.

Therefore, in the case where the hook portion of the hook is bent severely, or the ring portion is in the form of a palm tree symmetric with each other in the opposite direction, there is a problem in that the molding of the conventional forming roller and the pressing roller cannot be effectively formed.

In addition, in the conventional fastener tape manufacturing process, since only a plurality of hooks and a base sheet are manufactured as an integral form through an extrusion process using a synthetic resin material, bonding of a foam sponge or fiber material to the lower surface of the base sheet is performed. If you want to combine the sheets need to add a separate process, there was a problem that takes a lot of manufacturing time and expense.

The present invention is to solve such a problem, by manufacturing a fastener tape through a synthetic resin extrusion process by a molding roller, by forming a primary roller and a secondary molding roller for forming the molding roller step by step, hook The first object is to be able to mold in various forms such as palm tree without being limited in form.

That is, in the primary forming roller, the molding is performed as a rough shape of the hook, and in the secondary forming roller, the branches of the hook are opened to form the desired shape, thereby making it possible to manufacture hooks of various shapes. .

In addition, by allowing the bonding sheet made of foam sponge or fiber material to pass through the forming roller together with the synthetic resin during the extrusion process, it is possible to integrally bond the bonding sheet to the lower surface of the base sheet without any additional process. Therefore, it is a second object of the present invention to be able to reduce manufacturing time and costs.

In the present invention for achieving the above object, in the method for producing a fastener tape by extruding a synthetic resin between the forming roller and the pressure roller formed with a hook-shaped groove,

It is characterized in that the palm-shaped hook is formed by sequentially passing the first forming roller and the second forming roller.

The configuration of the present invention by the accompanying drawings in detail as follows.

1 is a manufacturing process diagram showing a first embodiment of a fastener tape manufacturing method according to the present invention, Figure 2 is a manufacturing process diagram showing a second embodiment of a fastener tape manufacturing method according to the present invention, Figure 3 4 is an enlarged perspective view showing only the hook structure of the fastener tape, and FIG. 5 is a cross-sectional view of the fastener tape manufactured according to the present invention.

First, as shown in FIG. 1, the high temperature synthetic resin 6 extruded from the die passes through the primary forming roller 2 and the pressing roller 7, and has a groove 21 formed on the outer circumferential surface of the primary forming roller 2. The hook 12 of the same shape as) is formed and the base sheet 11 is formed at the bottom thereof.

On the outer circumferential surface of the primary forming roller 2, grooves 21 having the same shape as the hooks are formed at regular intervals over the entire circumference, so that the high temperature synthetic resin 6 passes through the primary forming roller 2. The base sheet 11 and the hooks 12 placed on the upper part are integrally formed, and the hooks 12 are continuously formed at regular intervals.

Meanwhile, in the present invention, since the foamed sponge or the bonding sheet 13 of the fiber material is configured to be supplied to the primary forming roller 2 together with the extruded synthetic resin 6 during the extrusion process, the primary forming roller ( The fastener tape via 2) is in a state in which the bonding sheet 13 is integrally bonded to the lower surface of the base sheet 11.

At this time, the bonding sheet 13 is preferably used the same synthetic resin material to be firmly bonded to the base sheet 11 in a high temperature, high pressure state.

As such, the fastener tape 1 passing through the primary shaping roller 2 passes between the secondary shaping roller 3 and the pressure roller 7, where the secondary shaping roller 3 has the hook 12. By pressing or opening the upper part of the) is to form the hook 12 in the original desired form.

Since the fastener tape 1 via the secondary forming roller 3 is cooled while still passing through the cooling device 4, the coupling of the hook 12, the base sheet 11 and the joining sheet 13 is prevented. It is solid and its form is maintained.

The fastener tape 1 via the cooling apparatus 4 is wound up by the winding roller 5, and becomes a state which can be used in the next process.

FIG. 5 is a cross-sectional view of the fastener tape manufactured according to the present invention. The bonding sheet 13 may be formed thick or thin by using a foam sponge or a fiber material.

On the other hand, Figure 2 is a manufacturing process diagram showing a second embodiment of the manufacturing method of the fastener tape according to the present invention, it presents a method for effectively manufacturing the palm-shaped hook (12).

Here, it can be seen that the groove 21 'of the primary shaping roller 2 and the groove 31 of the secondary shaping roller 3 are formed differently, but the groove of the primary shaping roller 2 ( 21 ') to roughen the shape of the hook 12, and then to be molded in the form of a palm tree through the groove portion 31 of the secondary forming roller (3).

That is, the groove portion 21 'formed on the outer circumferential surface of the primary forming roller 2 is formed in a form in which the upper portion is split in a linear direction from the body portion, and is formed on the outer circumferential surface of the secondary forming roller 3 over the entire circumference. The groove part 31 is formed in two arc shapes, and thus the upper part of the hook 12 formed in the primary forming roller 2, that is, the bifurcated portion, is the groove part 31 of the secondary forming roller 3. By pressing while pressing the appropriate force while passing through the left and right to make the hook 12 in the form of a palm tree.

Therefore, the spacing between the grooves 21 'of the primary shaping roller 2 and the spacing between the grooves 31 of the secondary shaping roller 3 should coincide with each other, and the primary shaping roller 2 The relative position of the secondary shaping roller 3 relative to should be designed such that the hook 12 passing through the primary shaping roller 2 can be accurately positioned in the groove 31 of the secondary shaping roller 3.

On the other hand, also in this case, by supplying the bonding sheet 13 by the fiber or foam sponge together with the lower surface of the extruded resin during the extrusion process of the synthetic resin, the primary and secondary forming rollers (2) (3) and the pressure roller ( 7) The bonding sheet 13 may be integrally bonded to the lower surface of the base sheet 11 during the passage therebetween. (See Figure 1)

 In addition, Figure 3 is an enlarged perspective view of the forming roller used in the present invention, in order to form a complex groove portion 21 on the main surface of the forming roller, the forming roller 2 is laminated by joining a plurality of rings Use one.

That is, in the forming roller 2, the forming ring 22 in which the hook-shaped groove 21 is formed and the spacer ring 23 formed in the form of a disc are alternately laminated and bonded, but the thickness of the forming ring 22 is It is configured to match the thickness of the hook 12, and the thickness of the spacer ring 23 is configured to match the longitudinal gap between each hook 12.

Meanwhile, the reinforcing ring 24 may be laminated between the forming ring 22 and the spacer ring 23, and the reinforcing ring 24 corresponds to the groove portion 21 of the forming ring 22. An arc-shaped groove is formed in the groove.

Therefore, when the extrusion molding process is performed by the molding roller 2 configured as described above, as shown in FIG. 4, the hook 12 has a branch 121 having a top portion rounded in two directions, and a pillar constituting the body. 123 and a reinforcing rib 122 reinforced in an arc shape on the front and rear surfaces of the pillar 123.

In this way, in the forming roller 2, when the reinforcing ring 24 is laminated between the forming ring 22 and the spacer ring 23, it is reinforced by the reinforcing rib 122 on the front and rear surfaces of the hook 12. As a result, the hook is more rigid and the tightening force is improved.

As described above, in the present invention, while manufacturing the fastener tape 1 through the synthetic resin extrusion process by the forming roller, the primary forming roller (2) and the secondary forming roller (3) for forming the forming roller in stages By using a), without being limited by the shape of the hook 12, it is possible to mold in more various forms such as palm trees.

That is, in the primary forming roller 2, the molding is performed as a rough shape of the hook, and in the secondary forming roller 3, the branches 121 of the hook 12 are opened to form the original shape, and thus, various shapes are formed. To be able to manufacture the hook 12.

In addition, the bonding sheet 13 made of foam sponge or fibrous material is passed through the forming roller together with the synthetic resin 6 during the extrusion process, thereby bonding the bonding sheet 13 to the lower surface of the base sheet 11 without any additional process. It can be combined in one piece. Therefore, manufacturing time and cost can be reduced.

Claims (9)

In the method for producing a fastener tape by extruding a synthetic resin between the forming roller and the pressure roller formed with a hook-shaped groove on the outer peripheral surface, It consists of a primary forming roller and a secondary forming roller for forming the forming roller in stages, in the primary forming roller, the forming is performed as a rough shape of the hook, and in the secondary forming roller, the branch of the hook is opened to form the original shape. By the method of producing a fastener tape, characterized in that the palm-shaped hook is formed. The method of claim 1, During the extrusion process of the synthetic resin, the bonding sheet by the fiber or foam sponge is fed together to the lower surface of the extruded resin, thereby passing the bonding sheet to the base sheet of the fastener tape while passing between the primary and secondary forming rollers and the pressing roller. Method for producing a fastener tape, characterized in that integrally bonded to the lower surface. The method according to claim 1 or 2, The groove portion formed on the outer circumferential surface of the primary forming roller is formed in a form in which the upper portion is split in a straight direction from the trunk portion, and the groove portion formed on the outer circumferential surface of the secondary forming roller is formed in two arc shapes, thereby Pressing the upper part of the hook formed in the forming roller, that is, the bifurcated part through the groove of the secondary forming roller, with the appropriate force and spreading it to the left and right to make the hook into a palm-like shape A method for producing a fastener tape, characterized in that. The method of claim 3, wherein The spacing between the grooves of the primary shaping roller and the grooves of the secondary shaping rollers must coincide with each other, and the relative position of the secondary shaping rollers relative to the primary shaping rollers is the hook passing through the primary shaping rollers. Method for producing a fastener tape, characterized in that used to be configured to be accurately positioned in the groove portion of the secondary forming roller. The method of claim 1, A method of producing a fastener tape, wherein the fastener tape is cooled while passing through a cooling apparatus after the extrusion molding process, and the finished fastener tape is wound on a take-up roll. In the forming roller which manufactures a fastener tape composed of a base sheet and a hook by extruding a high temperature synthetic resin when rotating in engagement with the pressure roller by a hook-shaped groove portion regularly formed on the outer circumferential surface, The forming roller is composed of the primary forming roller and the secondary forming roller, The primary forming roller has a groove formed on the outer circumference over the entire circumference, and the upper portion is divided in a straight direction from the body portion, and the secondary forming roller has a groove formed on the outer circumference over the circumference in the form of two arcs. Forming rollers for fastener tapes. The method of claim 6, The spacing between the grooves of the primary shaping roller and the grooves of the secondary shaping rollers must coincide with each other, and the relative position of the secondary shaping rollers relative to the primary shaping rollers is the hook passing through the primary shaping rollers. The forming roller for manufacturing a fastener tape, characterized in that the configured to be accurately positioned in the groove portion of the secondary forming roller. The method of claim 6, The forming roller is formed by alternately laminating a forming ring in which a hook-shaped groove is formed and a spacer ring composed of a disc shape, the thickness of the forming ring being equal to the thickness of the hook, and the thickness of the spacer ring between each hook. Forming roller for manufacturing fastener tape, characterized in that configured to match the longitudinal gap. The method of claim 8, Between the forming ring and the spacer ring, the forming roller for fastener tape manufacturing, characterized in that the reinforcing ring formed in a position corresponding to the groove portion of the forming ring in a circular arc-shaped groove portion.

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