JP3031237U - Non-woven - Google Patents

Abstract

(57) An object of the present invention is to provide a non-woven fabric having a high degree of air permeability, flexibility and rapid permeability by eliminating the drawbacks of conventional non-woven fabrics by having a structure of a bulging surface layer. A first mesh layer 5 made of a first heat-meltable composite fiber and a second mesh layer 6 made of a second heat-meltable composite fiber and a synthetic fiber. Among them, there are two fiber components in the first heat-meltable composite fiber, and the melting point of the first fiber component is higher than that of the second fiber component. Similarly, the second heat fusible composite fiber also has two fiber components, one of which has a melting point higher than that of the other fiber component. In both the second heat-meltable composite fiber and the first heat-meltable composite fiber, the melting point of one fiber component is lower than the heat treatment temperature. Further, the melting point of the synthetic fiber in the second fiber net layer 6 is high at the heat treatment temperature. The two net layers are bundled together and heated in a hot air device to be integrally molded.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a non-woven fabric having a bulged surface layer structure, which is used as a surface layer material for sanitary babies and disposable diapers.

[0002]

[Prior art]

 The generally used method for producing the surface layer material of physiological hygiene cotton and disposable diaper is to form fibers by a carding machine to form a fibrous mesh layer, and to further form a chemical fibrous layer. Although the fibers in the mesh layer are adhered to each other with an adhesive, this method not only wastes energy and materials, but also irritates the human skin and sometimes itches the skin. It is not ideal for use, and some other types depend on the compression bonding method of the hot press roll (see Fig. 1). Is subjected to roll compression through several sets of rolls 90. These rolls 90 may have a smooth surface or may be of a type engraved with a flower pattern. Fiber C is heated and compressed through the roll 90 to form a non-woven fabric.

However, the nonwoven fabric manufactured by the conventional method has the following drawbacks. 1. The surface material manufactured by the conventional hot-press roll compression bonding method does not have flexibility, and the feeling in use is not good. 2. The surface material manufactured by the conventional hot-press roll compression bonding method has a large pressure of the roll 91, so that the distribution ratio of the voids of the thin pieces formed on the surface of the fiber is relatively poor. Not only is the water penetration effect very poor, but the air permeability is also poor. Moreover, since it does not have a highly bulging surface layer, the bond distance between the surface layer and the absorber is very close, and therefore the nonwoven fabric surface layer cannot be kept dry, which is inconvenient for the user. Bring

[0004]

The object of the present invention is to provide a non-woven fabric having a high degree of air permeability, flexibility and rapid permeability by eliminating the drawbacks of conventional non-woven fabrics by having a structure of a bulging surface layer. There is something to do.

[0005]

[Means for Solving the Problems]

 The non-woven fabric of the present invention for solving the above-mentioned problems is (1) a non-woven fabric having a structure of a bulging surface layer composed of two or more layers of heat-meltable fiber mesh, and the following constituent elements ( It is characterized by including a) (b) (c). (a) At least one or more first fiber-mesh layers are composed of at least one or more first heat-meltable composite fibers, and one of the first heat-meltable composite fibers is The melting point of the fiber component is lower than the set heat treatment temperature.

(B) at least one or more second fiber mesh layers are composed of at least one or more second heat-fusible composite fibers and at least one or more synthetic fibers, The melting point of one fiber component in the second heat-meltable composite fiber is lower than the set heat treatment temperature. (c) The first fibrous net layer and the second fibrous net layer are bundled together, and at least one or more first fibrous net layers and at least one or more second fibrous nets are provided. It is placed on the reticular layer and heat-bonded to each other. (2) In the non-woven fabric according to (1), the first heat-meltable composite fiber and the second heat-meltable composite fiber are of two split side surface type. (3) In the non-woven fabric according to (1), the first heat-meltable composite fiber and the second heat-meltable composite fiber are in the form of a layer having a core / a layer enclosing the core. To do. (4) In the nonwoven fabric according to any one of (1), (2) and (3), the components of the first thermofusible composite fiber and the second thermofusible composite fiber are PP and It is characterized in that it is a combination of any one of PE, PET and PE, PET and PP, and PET and low melting point PET. (5) In the nonwoven fabric described in (1), the synthetic fiber is one of the synthetic fibers. (6) The nonwoven fabric described in (5) is characterized in that the one-layer synthetic fiber is made of any one of PP, PET and nylon. (7) In the nonwoven fabric according to (1), when the heat-meltable fiber mesh layer and the heat-meltable fiber mesh layer having a melting point different from that of the heat-meltable fiber mesh layer are bundled together. , A third heat-meltable composite fiber is added to the bottom layer of the bundle to form a reinforcing layer, and the melting point of one fiber component in the third heat-meltable composite fiber is higher than the heat treatment temperature. It is characterized by being low. (8) A non-woven fabric having a structure of a bulging surface layer composed of two or more layers of heat-fusible fiber mesh, characterized by containing the following constituent elements (d) (e) (f): To do.

(D) At least one or more first fiber network layers are composed of a first heat-fusible composite fiber, and the melting point of one fiber component in the first heat-fusible composite fiber. Is lower than the set heat treatment temperature. (e) At least one or more second fiber mesh layers are composed of three-dimensional helical spiral fibers, and one fiber component of the three-dimensional three-dimensional spiral fibers is The melting point is lower than the set heat treatment temperature.

(F) The first fibrous net layer and the second fibrous net layer are bundled together, and at least one or more first fibrous net layers are provided. It is placed on the second fiber mesh layer and heat-bonded to each other. (9) In the non-woven fabric according to (8), the first heat-fusible composite fiber is of a lateral semi-circular type. (10) In the non-woven fabric according to (8), the first heat-meltable composite fiber is in the form of a layer having a core / a layer enclosing the core. (11) In the nonwoven fabric according to any one of (8), (9) and (10), the components of the first heat-meltable composite fiber are PP and PE, PET and PE, PET and PP, and It is characterized in that it is a combination of any one of PET and low melting point PET. (12) In the non-woven fabric according to (8), the spiral fiber of the three-dimensional three-dimensional spiral is a two-sided semicircular side surface type. (13) In the non-woven fabric according to (8), the spiral fiber of the three-dimensional three-dimensional spiral has a type of a layer with a core / a layer surrounding the core. (14) In the non-woven fabric according to any one of (12) and (13), the helical fiber component of the three-dimensional solid spiral is PP and PE, PET and PE, PET and PP, and PET and a low melting point. It is characterized in that it is one kind of combination of PET. (15) In the nonwoven fabric according to (8), when the heat-meltable fiber netting layer and a spiral heat-meltable network layer having a melting point different from that of the heat-melting fiber netting layer are bundled together. A third heat-meltable composite fiber is added to the bottom layer of the bundle to form a reinforcing layer, and the melting point of one fiber component in the third heat-meltable composite fiber is higher than the heat treatment temperature. Characterized by low.

[0009]

[Embodiment of device]

 The non-woven fabric having a bulging surface layer structure of the present invention is composed of two or more layers of heat-fusible fiber mesh, in which the first network layer is the heat-meltable composite fiber, while the second network is The layer is composed of two types of heat-meltable composite fibers with different melting points, and the melting point of the heat-meltable composite fiber of the low melting point and the melting point of the heat-meltable composite fiber of the first mesh layer. Are very close to each other, the second network layer is adhered to the first network layer by hot air, and the swelling effect is generated due to the heat melting property of the one composition having a relatively high melting point in the second network layer. It does not use chemical adhesives and has high air permeability and flexibility.

Further, as another embodiment, the nonwoven fabric having the bulging surface layer structure of the present invention is composed of two or more layers of heat-fusible fiber mesh, and the first mesh layer therein is heat-meltable. It is a composite fiber, while the second network layer is also composed of a meltable composite fiber network layer having a three-dimensional three-dimensional spiral property. The second network layer adheres to the first network layer by hot air. In addition, the fiber spiral property in this fiber network layer is utilized to generate a bulging state, and a high degree of air permeability and flexibility are provided without adding a chemical adhesive material.

Further, as another embodiment, the nonwoven fabric having the bulging surface layer structure of the present invention adopts a spreading and arranging method in which the distribution of pores on the side surface of the fiber mesh layer is radial. , By doing so, the water that has penetrated into it diffuses radially along the drainage line of the pores of each layer, and not only can it quickly absorb water, but it also does not restore the absorbed water. It has similar effects.

As another embodiment, the nonwoven fabric having the bulging surface layer structure of the present invention has one of the strongest heat-melting properties in the lowest layer according to the strength demands of the above-mentioned products. The reinforcing layers of fiber are bundled together, and the reinforcing layers are adhered to the net layer above them by hot air to make the adhesion of each layer even more reliable.

[0013]

【Example】

 Hereinafter, in order to show the features and effects of the present invention one step further, detailed description will be given with reference to the compounding schemes of Examples. As shown in each figure, the present invention is a kind of "nonwoven fabric having a bulging surface layer structure", and as shown in FIGS. 2 and 3 therein, the first heat-meltable composite fiber and the second heat-meltable fiber are first formed. The raw materials 1 of the fusible composite fiber and the synthetic fiber are separately supplied to different cotton feeders (Hopper Feeder) 2 and cotton shaping machine (Carding Machine) 3, and the first hot-melting composite fiber is supplied. A first net layer 5 composed of the above and a second net layer 6 composed of the second heat-meltable composite fiber and synthetic fiber are formed. Among them, there are two fiber components in the first heat-meltable composite fiber, and the melting point of the first fiber component is higher than that of the second fiber component. Similarly, the second heat fusible composite fiber also has two fiber components, one of which has a higher melting point than the other of the fiber components. In this example, both the second heat-meltable composite fiber and the first heat-meltable composite fiber have the same melting point of one fiber component than the heat treatment temperature. Further, the melting point of the synthetic fiber in the second fiber net layer 6 is high at the heat treatment temperature. The two mesh layers are bundled together (as shown in FIG. 5), and the first mesh layer 5 is placed on the second mesh layer 6 and is fed into the hot air device 8 by the transport belt 7 so that the hot air device At the hot air temperature generated in step 8, the relatively low-melting fiber in the first heat-melting composite fiber in the first mesh layer 5 and the second heat-melting composite fiber in the second mesh layer 6 The fiber having a relatively low melting point is melted by heat to melt the fiber components having the melting points of both components depending on the heat treatment temperature, and at the same time, the second mesh layer 6 is melted while forming a bonding point between the two fiber mesh layers. Utilizing the fact that the fibers do not have the same bulging property (that is, synthetic fibers containing a relatively high melting point), the bulging property of the net layer increases from the surface to the inside, and The product 9 having the air permeability, flexibility, and rapid penetration property described above and which does not require the addition of a chemical adhesive is manufactured.

Further, as shown in FIGS. 2 and 4, in the second embodiment, the fiber feeder having the three-dimensional three-dimensional spiralness and the first heat-meltable composite fiber are separately fed to the cotton feeder 2 and It is supplied into the cotton shaping machine 3 to form a first mesh layer 5 composed of a first heat-melting composite fiber and a second mesh layer 6A composed of a three-dimensional three-dimensional helical spiral fiber, of which the first There are two components in the heat-fusible composite fiber, and the melting point of the component of the first fiber is higher than that of the component of the second fiber. Similarly, a three-dimensional cubic spiral fiber also has two fiber components, of which one fiber component has a higher melting point than the other fiber component. In the second embodiment, the melting point of one fiber component is lower than the heat treatment temperature in both the first heat-fusible composite fiber and the three-dimensional three-dimensional helical fiber. The two net layers are bundled together (as shown in FIG. 5), the first net layer 5 is placed on the second net layer 6A, and is fed into the hot air device 8 by one transport belt 7, and then the hot air device 8 The melting point of the fiber component is lower than the heat treatment temperature due to the generated hot air temperature, and the fiber components are melted to form the bonding points of the two fiber network layers. The swelling and spiraling properties of the fiber mesh layer and the swelling and spiraling properties of each fiber mesh layer are used to increase the swelling property of the entire mesh layer from the surface toward the inner surface. It produces a product 9 that is highly permeable, flexible and rapidly permeable.

As shown in FIGS. 3 and 4, the first heat-fusible composite fiber in the fiber mesh layer is two semi-circular split side face type and cored / wrapped layer, and It can also be PP / PE, PET / PE, PET / PP. As shown in FIG. 3, the second heat-fusible composite fiber is in the form of two semi-circular flank types and a cored / wrapped layer, which is PP / PE, PET / PP, PET / PE. , PET / low melting PET.

Further, as shown in FIG. 3, the synthetic fibers in the second mesh layer 6 are relatively high melting point one-melting synthetic fibers such as PP, PET and nylon (Nylon). As shown in FIG. 4, the three-dimensional spiral fiber in the spiral composite fiber network layer 6A has two semicircular side surface types, that is, an eccentric core layer / a core layer layer type. The fiber component can also be PP / PE, PET / PP, PET / PE, PET / low melting PET.

As shown in FIGS. 3 and 4, the product 9 does not have the same Denier value of each mesh layer, and by comparison, does not have the same denseness of the swelling of each fiber mesh layer, and the swelling property of the entire mesh layer. Increases from the surface layer to the inner layer, forming a radiation-diffusing arrangement system, so that the water that permeates into the layer diffuses in a radiative manner in the arranging rows of holes in each layer, and diffuses rapidly, rapidly. Not only absorbs water, but also does not easily return to penetration. The product 9 also has a reinforcing layer 91 composed of one layer of the third fusible composite fiber bundled on the bottom layer according to the requirement of strength, and the upper layer of the fusible composite fiber network is made by hot air. The layer 6 or the layer 6A can be adhered to each other to further ensure the adhesion of each mesh layer.

Further, as shown in FIG. 3, first, any one heat-meltable composite fiber such as PP / PE, PET / PE or PET / PP and PP / PE, PET / PP, PET / PE, P ET / low melting point PET, etc. Any one of the second heat-fusible composite fibers and the mixed fibers of synthetic fibers (such as PP, PE and nylon) are separately provided with different cotton feeders 2 and cotton shaping. After shaping with a machine 3 to produce a first net layer and a second net layer, the first net layer and the second net layer are bundled into one, and one or more second net layers are bundled under the first net layer and placed on a transportation belt. At the hot air temperature generated by the hot air device 8, the low melting point fiber component of the second mesh layer fiber and the low melting point fiber component of the first fiber layer are mixed together at 7 The second fiber mesh layer and the first fiber mesh layer are adhered to each other by bonding to each other, and the fiber having a relatively high melting point in the second fiber mesh layer expands. Utilizing the effects, it produces a surface material for hygienic products with a high degree of air permeability and flexibility that does not require a kind of chemical adhesive material. When the first fiber netting layer and one or more second fiber netting layers are bundled together, and in accordance with the demand, one second heat-fusible composite fiber (eg PP / PE, PET / PE, PET / PP) etc. are added to form a net layer for reinforcing purposes. The third heat-meltable fiber consists of two kinds of fiber components, one of which has a higher melting point than the other fiber component, and the lower melting point of the fiber component has a melting point. The hot air that is lower than the heat treatment temperature and is generated by the hot air device 8 melts the low melting point fibers and is connected to the upper layer.

When the net layers are stacked on the outside, the Denier values of the net layer arrangements are not the same, so the net layer intervals are radiatively diffused from top to bottom. Therefore, the liquid can be rapidly permeated into the absorber, and the reverse osmosis is not easily made again. Further, as shown in FIG. 4, any one of the first heat-meltable composite fibers such as PP / PE, PET / PE, PET / PP and PP / PE, PET / PP, PET / PE or PET is used. / One arbitrary three-dimensional spiral heat-melting fiber containing low melting point PET, etc. is supplied into different cotton feeders 2 and shaped by the cotton shaping machine 3 to form the first net layer and the second net. After forming the layers and bundling them together, one or more second fiber net layers are placed under the first fiber net layer and fed into the hot air device 8 by the transport belt 7, The low melting point component of the three-dimensional helical fiber of the mesh layer is melt-bonded to the component of the low melting point fiber of the first heat-meltable composite fiber on the first fiber mesh layer at the hot air temperature generated by the hot air device 8. In addition, the swelling structure is brought about by the three-dimensional fiber spiralness, which does not require a kind of chemical adhesive and has high air permeability and flexibility. One the surface layer material of hygiene products. When bundling the first fiber mesh layer and one or more second fiber mesh layers, if necessary, one kind of third heat-meltable composite fiber (eg PP / PE, PET / PE, It is used for reinforcement by means of a net layer formed by adding (such as PET / PP). Of course, the third heat-fusible fiber is also composed of two kinds of fiber components, and the melting point of one fiber component is higher than that of the other fiber component. The melting point is lower than the heat treatment temperature, so that the low-melting-point fiber is melted by the hot air generated by the hot-air device 8 and connected to the upper layer.

Since the denier value of each mesh layer arrangement is different when the mesh layers are bundled outside of this, the gap between the mesh layers exhibits a radial diffusion state from top to bottom, and the liquid rapidly permeates the absorber. It can be done, and it will not easily reverse osmosis again.

[0021]

[Effect of device]

 In summary, the non-woven fabric of the present invention has a high degree of air permeability, flexibility and rapid permeability except for the drawbacks of the conventional non-woven fabric by having a special bulging surface layer structure. According to the present invention, it is possible to improve various drawbacks in the above-mentioned conventional general-purpose technology and to enhance various effects in use, so that a non-woven fabric having great utility value in industry is provided. be able to.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a general service device.

FIG. 2 is a schematic diagram of two types of manufacturing of the present invention (Block Dia).
gram).

FIG. 3 is a schematic diagram of a product of the present invention.

FIG. 4 is a schematic diagram of another product of the present invention.

Figure 5: Carding machine
FIG. 3 is a conceptual diagram of a fiber net layer of the present invention, which is placed in a bundle after being placed.

[Explanation of symbols]

 C fiber 90 roll 1 raw material 2 cotton feeder 3 cotton shaping machine 5 first net layer 6 second net layer 6A second net layer 7 transport belt 8 hot air device 9 product 91 reinforcement layer

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[Procedure amendment]

[Submission date] June 11, 1996

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Scope of utility model registration request

[Correction method] Change

[Correction content]

[Scope of utility model registration request]

Claims (15)

[Scope of utility model registration request] 1. A non-woven fabric having a structure of a bulging surface layer composed of two or more layers of heat-fusible fiber mesh, comprising the following constituents (a) (b) (c): And (a) at least one or more first fiber-mesh layer is composed of at least one or more first heat-meltable composite fiber, and one fiber in the first heat-meltable composite fiber The melting point of the component is lower than the set heat treatment temperature. (b) at least one or more second fiber mesh layers are composed of at least one or more second heat-meltable composite fibers and at least one or more synthetic fibers, The melting point of one fiber component in the meltable composite fiber is lower than the set heat treatment temperature. (c) The first fibrous net layer and the second fibrous net layer are bundled together, and at least one or more first fibrous net layers and at least one or more second fibrous nets are provided. It is placed on the reticular layer and heat-treated to bond them. 2. The non-woven fabric according to claim 1, characterized in that the first heat-meltable composite fiber and the second heat-meltable composite fiber are of two split side surface type. 3. The non-woven fabric according to claim 1, wherein the first heat-meltable composite fiber and the second heat-meltable composite fiber are of a type having a core layer / a layer containing a core. Characterize. 4. The nonwoven fabric according to claim 1, wherein the components of the first heat-meltable composite fiber and the second heat-meltable composite fiber are PP and P, respectively.
It is characterized in that it is a combination of any one of E, PET and PE, PET and PP, and PET and low melting point PET. 5. The non-woven fabric according to claim 1, wherein the synthetic fiber is one of the synthetic fibers. 6. The non-woven fabric according to claim 5, characterized in that said one-piece synthetic fiber is made of any one of PP, PET and nylon. 7. The nonwoven fabric according to claim 1, wherein the heat-meltable fiber netting layer and a heat-meltable fiber netting layer having a melting point different from that of the heat-melting fiber netting layer are bundled together. When placing
A reinforcing layer is formed by adding a third heat-meltable composite fiber to the bottom layer of the bundle, and the melting point of one fiber component in the third heat-melting composite fiber is lower than the heat treatment temperature. It is characterized by 8. A non-woven fabric having a structure of a bulging surface layer composed of two or more heat-fusible fiber mesh layers, which comprises the following constituent elements (d) (e) (f): And (d) At least one or more first fiber network layers are composed of a first heat-fusible composite fiber, and the melting point of one fiber component in the first heat-fusible composite fiber is set. Lower than the heat treatment temperature. (e) At least one or more second fiber net layers are composed of three-dimensional helical spiral fibers, and one fiber component in the three-dimensional three-dimensional spiral fibers is The melting point is lower than the set heat treatment temperature. (f) The first fibrous net layer and the second fibrous net layer are bundled together, and at least one or more first fibrous net layers and at least one or more second fibrous nets are provided. It is placed on the reticular layer and heat-treated to bond them. 9. The non-woven fabric according to claim 8, wherein the first heat-fusible composite fiber is of a semi-circular split side surface type. 10. The non-woven fabric according to claim 8, wherein the first heat-fusible composite fiber is in the form of a layer with a core / a layer surrounding the core. 11. The method according to any one of claims 8, 9 and 10.
The woven fabric according to the item 1, wherein the component of the first heat-meltable composite fiber is a combination of any one of PP and PE, PET and PE, PET and PP, and PET and low melting point PET. To do. 12. The non-woven fabric according to claim 8, wherein the helical fiber of the three-dimensional three-dimensional spiral is a two-sided semicircular split type. 13. The non-woven fabric according to claim 8, wherein the helical fiber of the three-dimensional three-dimensional spiral is in the form of a layer with a core / a layer surrounding the core. 14. The nonwoven fabric according to claim 12, wherein the helical fiber component of the three-dimensional three-dimensional spiral is PP and PE, PET and PE, PET and PP,
And a combination of PET and low melting point PET. 15. The nonwoven fabric according to claim 8, wherein the heat fusible fiber netting layer and a spiral heat fusible netting layer having a melting point different from that of the heat fusible fiber netting layer are bundled together. When placed, a reinforcing layer is formed by adding a third thermofusible composite fiber to the bottom layer of the bundle, and the melting point of one fiber component in the third thermofusible composite fiber is the heat treatment temperature. It is characterized by being lower than.