WO2017188162A1 - 複合繊維シート、複合繊維シートを用いた使い捨て繊維製品、手袋、レインコート及び使い捨て繊維製品の製造方法 - Google Patents
複合繊維シート、複合繊維シートを用いた使い捨て繊維製品、手袋、レインコート及び使い捨て繊維製品の製造方法 Download PDFInfo
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- WO2017188162A1 WO2017188162A1 PCT/JP2017/016110 JP2017016110W WO2017188162A1 WO 2017188162 A1 WO2017188162 A1 WO 2017188162A1 JP 2017016110 W JP2017016110 W JP 2017016110W WO 2017188162 A1 WO2017188162 A1 WO 2017188162A1
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- composite fiber
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D3/00—Overgarments
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- A41D3/04—Raincoats
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/10—Impermeable to liquids, e.g. waterproof; Liquid-repellent
- A41D31/102—Waterproof and breathable
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- A—HUMAN NECESSITIES
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- A41D31/12—Hygroscopic; Water retaining
- A41D31/125—Moisture handling or wicking function through layered materials
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- A—HUMAN NECESSITIES
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- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/14—Air permeable, i.e. capable of being penetrated by gases
- A41D31/145—Air permeable, i.e. capable of being penetrated by gases using layered materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F13/00—Bandages or dressings; Absorbent pads
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M17/00—Producing multi-layer textile fabrics
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Definitions
- the present invention relates to a composite fiber sheet, a disposable fiber product using the composite fiber sheet, a glove, a raincoat, and a method for manufacturing a disposable fiber product.
- so-called disposable products that are discarded after one or more uses are widely used for clothing such as underwear, shirts, diapers, gloves, and raincoats, and these are widely used for home use and medical use.
- the dough used for the disposable product is mainly made of a nonwoven fabric or a synthetic resin sheet, and is advantageous in that it is lightweight and easy to process.
- the disposable product using such a dough is inferior in moisture transpiration, It was inferior in comfort at the time of wearing, such as a feeling of stuffiness caused by long-term use and body fluids such as sweat sticking to the skin.
- Patent Document 1 describes a composite sheet in which a surface web made of nonwoven fabric, a microporous film, and an internal web made of cotton are laminated.
- Patent Document 2 includes an exterior member and an absorbent main body, and the absorbent main body is removable at the crotch portion of the exterior member. A pants-type disposable diaper that is bonded in a state is described.
- Patent Document 1 Although the composite sheet described in Patent Document 1 has a microporous film, it does not have sufficient moisture transpiration. Moreover, in the pants-type disposable diaper described in Patent Document 2, since the exterior member is formed of a nonwoven fabric, the moisture transpiration is poor, and there is a problem that the body surface is stuffy or sticky on the skin surface. . Furthermore, Patent Document 2 discloses disposing elastic materials around the waist, abdomen, and legs around the pants-type disposable diaper to improve the fit to the wearer, but uses many elastic materials. In particular, the stretchable material around the legs is arranged in a curved line, and there is a problem that its manufacture is not easy and costly.
- the present invention has been made in order to realize a disposable fiber product having excellent moisture transpiration and having no stuffiness or stickiness when worn, and as a fabric for producing a disposable fiber product having no stuffiness or stickiness. It aims at providing the composite fiber sheet which can be used. Another object of the present invention is to provide a disposable fiber product having excellent moisture transpiration using the composite fiber sheet. Furthermore, an object of the present invention is to provide a glove and a raincoat as a disposable fiber product having excellent moisture transpiration. Another object of the present invention is to provide a production method capable of producing disposable fiber products easily and inexpensively.
- the present invention provides: (1) A laminated sheet formed by laminating a fiber sheet having air permeability and a fiber material sheet having liquid diffusibility, and the fiber sheet and the fiber material sheet are in contact with each other. In the surface, a joining region where the fiber sheet and the fiber material sheet are joined and a non-joining region where they are not joined are formed, the non-joining region has a space portion, the space portion and the space A composite fiber sheet, characterized in that a moisture evaporation passage is formed in which the fiber gap of the fiber sheet and the fiber gap of the fiber material sheet communicate with each other; (2) A disposable fiber product formed by using the composite fiber sheet according to (1), (3) The disposable fiber product according to (2) is a glove, and the glove is formed by laminating the first fiber sheet, the fiber material sheet, the elastic member, and the second fiber sheet.
- the disposable fiber product according to (2) is a raincoat, and the raincoat is formed by laminating the first fiber sheet, the elastic member, the fiber material sheet, and the moisture-permeable film.
- a fiber sheet having air permeability and a fiber material sheet having liquid diffusibility are respectively supplied, and these sheets are partially joined by a joining means to form a laminated sheet.
- a step of manufacturing, a step of manufacturing a second composite fiber sheet in the same process as described above, a step of bonding the first composite fiber sheet and the second composite fiber sheet, and a predetermined shape simultaneously with or after bonding A method for producing a disposable fiber product, comprising a step of cutting.
- the composite fiber sheet of the present invention has excellent moisture transpiration and can be suitably used as a fabric for disposable fiber products. Moreover, the disposable fiber product using the composite fiber sheet of the present invention produces an effect of providing a comfortable wearing feeling without causing a feeling of stuffiness or stickiness during use. Furthermore, the glove and raincoat of the present invention are effective in improving the commercial value as a disposable glove and a disposable raincoat without causing the skin to sweat or heat up even when worn for a long time. Moreover, according to the manufacturing method of the disposable fiber product of this invention, there exists an effect which can manufacture the disposable fiber product provided with the characteristic which has the outstanding moisture transpiration property easily and cheaply.
- FIG. 1a and 1b are longitudinal sectional views of a composite fiber sheet according to the first embodiment of the present invention.
- FIG. 2 is a longitudinal sectional view of the composite fiber sheet in which the bonding position of the adhesive is shifted.
- Drawing 3 is a figure showing the state where composite fiber sheet was applied to disposable pants.
- FIG. 4 is a schematic diagram for explaining a manufacturing process of the composite fiber sheet.
- FIG. 5 is a flowchart for explaining a method for producing a composite fiber sheet.
- FIG. 6 is a schematic diagram showing an adhesive application device.
- 7a and 7b are schematic diagrams for explaining the folding process.
- 8a, 8b, and 8c are schematic diagrams for explaining the process from the punching process to the bonding process.
- FIG. 9 is a plan view showing a composite fiber sheet according to the second embodiment of the present invention.
- FIG. 10 is a view for explaining a flange portion of the composite fiber sheet of FIG.
- FIG. 11 is an enlarged view of the composite fiber sheet of FIG. 9.
- 12 is a cross-sectional view taken along line AA in FIG. 13 is a cross-sectional view taken along line BB in FIG. 14a and 14b are diagrams showing an example of a glove using a composite fiber sheet as a disposable fiber product
- FIG. 14a is a view of the glove from one side
- FIG. 14b is a view of the glove on the other side. It is the figure seen from.
- FIG. 15 is a diagram illustrating one embodiment of a universal glove using a composite fiber sheet.
- FIG. 15 is a diagram illustrating one embodiment of a universal glove using a composite fiber sheet.
- FIG. 16 is a schematic diagram illustrating an example of a manufacturing process of a glove using a composite fiber sheet.
- FIG. 17 is a flowchart illustrating an example of a method for manufacturing a glove using a composite fiber sheet.
- FIG. 18 is a diagram showing an embodiment of a raincoat using a composite fiber sheet.
- FIG. 19 is a schematic diagram showing an example of a process for producing a raincoat using a composite fiber sheet.
- 20a and 20b are views showing an embodiment of disposable pants using a composite fiber sheet, FIG. 20a is a view when the adherend is viewed from the rear, and FIG. It is a figure at the time of seeing from the side.
- FIG. 21 is a schematic diagram illustrating an example of a manufacturing process of disposable pants using a composite fiber sheet.
- FIG. 21 is a schematic diagram illustrating an example of a manufacturing process of disposable pants using a composite fiber sheet.
- FIG. 22 is a longitudinal sectional view of a composite fiber sheet in which the bonding positions of the adhesive are aligned.
- FIG. 23a and FIG. 23b are schematic cross-sectional views for explaining one of the embodiments in the case where the composite fiber sheet in the present invention includes a moisture-permeable film.
- FIG. 24 is a cross-sectional view showing one of the other aspects of the composite fiber sheet in the second embodiment of the present invention, and is a cross-sectional view corresponding to the cross section of FIG.
- FIG. 25 is a graph showing the relationship between the numerical value of the transpiration rate (%) and the elapsed time in Examples 1 to 4 and Comparative Example 1 shown in Table 1.
- the composite fiber sheet 1 in the present embodiment can be applied as a fabric for various disposable fiber products.
- gloves 310 and 310a see FIGS. 14 and 15
- a raincoat 311 see FIG. 18
- pants 10 and 312 see FIGS. 3 and 20 as will be described later.
- FIG. 1 b is a longitudinal sectional view of the composite fiber sheet 1 of the present embodiment.
- the composite fiber sheet 1 includes a first fiber sheet 2 having air permeability, a second fiber sheet 3 having air permeability, and a first fiber sheet 2 and a second fiber sheet 3. It has a fiber material sheet 4 having liquid diffusibility provided therebetween, and is constituted by a laminated sheet 15 formed by laminating the first and second fiber sheets 2 and 3 and the fiber material sheet 4.
- the first and second fiber sheets 2 and 3 constitute a fiber layer having air permeability
- the fiber material sheet 4 is a sheet constituting a fiber layer having liquid diffusibility.
- the composite fiber sheet 1 is composed of three layers.
- FIG. 1b shows an embodiment in which the fiber sheet is composed of the first fiber sheet 2 and the second fiber sheet 3, but as another embodiment, as shown in FIG. 1a, the fiber sheet has only one layer. It may be composed of That is, any one of the first and second fiber sheets 2 and 3 may be omitted, and the composite fiber sheet 1 including two layers of the fiber sheet 2 or 3 and the fiber material sheet 4 may be configured. .
- the composite fiber sheet 1 is formed from a two-layer laminated sheet 25 formed by laminating a first fiber sheet 2 and a fiber material sheet 4.
- a moisture permeable film 70 may be further laminated on the composite fiber sheet 1 as shown in FIGS. 1a and 1b.
- the moisture-permeable film refers to a film material that allows gas (air) and water vapor to pass through but does not allow liquids such as water to pass through.
- the liquid from the fiber material sheet 4 toward the outside direction is more effectively suppressed while ensuring the function of the water evaporation function by the laminated structure of the first fiber sheet 2 and the fiber material sheet 4.
- the moisture permeable film 70 is laminated at a position directly facing the fiber material sheet 4 in that it can be easily made. At this time, from the viewpoint of ensuring the function of moisture transpiration due to the laminated structure of the first fiber sheet 2 and the fiber material sheet 4, it is directly to the first fiber sheet 2 scheduled to be positioned on the skin surface side. It is preferable that the layers are stacked so as to avoid the position facing each other.
- the composite fiber sheet 1 has three layers of the first and second fiber sheets 2, 3 and the fiber material sheet 4, the composite fiber sheet 1 includes the second layer as shown in FIG. It is preferable that a moisture permeable film 70 is interposed between the fiber sheet 3 and the fiber material sheet 4.
- the moisture permeable film 70 is laminated in the composite fiber sheet 1 having a two-layer configuration of the first fiber sheet 2 or the second fiber sheet 3 and the fiber material sheet 4, as shown in FIG.
- the moisture permeable film 70 is laminated on the surface opposite to the fiber sheet bonding surface in the fiber material sheet 4 (that is, on the outer surface side of the fiber material sheet 4).
- FIG. 23a although it showed about the case where the 2nd fiber sheet 3 was abbreviate
- the moisture permeable film 70 is laminated on the surface of the material sheet 4 opposite to the fiber sheet bonding surface (that is, on the outer surface side of the fiber material sheet 4) (not shown).
- the first fiber sheet 2 or the second fiber sheet 3 is used. And the fiber material sheet 4 are in contact with each other. In such a mutual contact surface between the fiber sheet and the fiber material sheet, the first and second fiber sheets 2 or 3 and the fiber material sheet 4 are partially bonded by an adhesive. At this time, between the first fiber sheet 2, the second fiber sheet 3, and the fiber material sheet 4, a joining region and a non-joining region where they are not joined are formed, and the non-joining region has a space portion.
- the first fiber sheet 2 or the second fiber sheet 3 and the fiber material sheet 4 are partially bonded by an adhesive.
- the joining region 30 and the non-joining region 8 are formed by joining the first fiber sheet 2 and the fiber material sheet 4 with the adhesive 7.
- the non-joining region 8 has a space 9.
- a moisture evaporation passage is formed in which the space 9, the fiber gap of the first fiber sheet 2 or the second fiber sheet 3, and the fiber gap of the fiber material sheet 4 communicate with each other. Has been.
- the bonding of the moisture permeable film 70 is also a partial bond, and the fiber material is formed on the mutual contact surface between the fiber material sheet 4 and the moisture permeable film 70.
- a joining region 30 where the sheet 4 and the moisture permeable film 70 are joined and a non-joining region 8 where they are not joined are formed, and the non-joining region 8 has a space 9.
- the joint region 30 where the fiber material sheet 4 and the moisture permeable film 70 are joined is the same as in the case of forming the joint region 30 between the first fiber sheet 2 or the second fiber sheet 3 and the fiber material sheet 4. Further, it can be formed using the adhesive 7.
- the first fiber sheet 2 and the fiber material sheet 4 are in contact with each other.
- the first fiber sheet 2 and the fiber material sheet 4 are partially joined by the adhesive 7.
- region 8 in which they are not joined are formed, and the non-joining area
- region 8 in the mutual contact surface of the 1st fiber sheet 2 and the fiber material sheet 4, and the 2nd fiber sheet 3 The space 9 formed in the non-bonded region 8 on the mutual contact surface of the fiber material sheet 4, the fiber gap of the first fiber sheet 2, the fiber gap of the second fiber sheet 3, and the fibers of the fiber material sheet 4 A moisture evaporation passage in which the air gap communicates with each other is formed.
- the moisture permeable film 70 is provided so as to face the fiber material sheet 4, a portion through which water vapor passes in the moisture permeable film 70 is further added to the moisture evaporation passage.
- the composite fiber sheet 1 can exhibit excellent moisture transpiration due to the action of the moisture transpiration passage. Moreover, the heat dissipation and moisture permeability in the composite fiber sheet 1 can be improved by forming the moisture evaporation passage. In the embodiment in which the moisture permeable film is laminated on the outer surface side, the moisture permeable film does not allow liquid such as water to pass through, but since water vapor passes, the moisture transpiration property is similarly improved in the embodiment provided with the moisture permeable film. Can do. Moreover, it has the effect
- the composite fiber sheet 1 is suitable as a fabric for producing disposable fiber products (for example, gloves, raincoats, pants, sheets, etc.).
- a body fluid such as sweat comes out from the body when the disposable fiber product is worn on the body, the body fluid passes through the moisture evaporation passage of the composite fiber sheet 1 from the side of the first fiber sheet 2 in contact with the skin surface. Evaporates to the outside while diffusing inside.
- the composite fiber sheet 1 is a laminated sheet of the first fiber sheet 2, the fiber material sheet 4, and the second fiber sheet 3, the body fluid is in contact with the skin surface as shown by the arrows in FIG.
- the moisture evaporation passage in this case is the fiber gap of the first fiber sheet 2 ⁇ the space 9 in the non-bonded area 8 ⁇ the fiber gap of the fiber material sheet 4 ⁇ the space 9 in the non-bonded area 8 ⁇ the second fiber sheet 3. It is formed by the path
- the first fiber sheet 2 is on the side in contact with the user's skin (skin surface side), and the second fiber sheet 3 is on the non-skin surface side. Or may be formed so that their relationship is reversed.
- the above-mentioned body fluid refers to a concept including urine, blood, lymph, etc. in addition to sweat.
- both the first fiber sheet 2 and the second fiber sheet 3 are made of a nonwoven fabric material, and the fiber material sheet 4 is made of a paper material. Paper materials are excellent in liquid diffusibility and moisture transpiration, but cannot be put to practical use even if a fabric for disposable textile products is formed only from paper materials. This is because the paper material alone tends to collapse when it absorbs moisture. By laminating the paper material on the non-woven material, the effects of the present embodiment are exhibited.
- the paper material means a material produced by gluing or binding a vegetable fiber containing a cellulose-based component or a fiber other than a plant fiber with a binder.
- examples of the paper material include tissue paper, crepe paper, and airlaid nonwoven fabric.
- the paper material may contain materials other than the fiber material, and those containing such additive materials are also included in the concept of the paper material.
- the disposable fiber product is pants
- the moisture permeable film is laminated on the outer surface side of the second fiber sheet 3
- the moisture permeable film does not allow liquid to pass to the outside. Urine leakage can be prevented.
- region 8 is formed so that 9 may oppose through the fiber material sheet
- the space portion 9 is formed in this way, as shown by the thick arrow in FIG. 22, the shortest path through which the water vapor moves through the laminated sheet 1 b to the outside of the composite fiber sheet is opened, Water can be efficiently evaporated, and the effect of improving water transpiration is great.
- FIG. 2 shows that a space portion 9 formed between the first fiber sheet 2 and the fiber material sheet 4 and a space portion 9 formed between the fiber material sheet 4 and the second fiber sheet 3 are provided.
- Fig. 3 shows an embodiment that is not opposed to each other and is laterally offset.
- a path for passing water vapor through the laminated sheet 1b to the outside of the composite fiber sheet becomes a short path (thick arrow in FIG. 2).
- the space 9 is formed by applying an adhesive so that the space 9 facing each other via the fiber material sheet 4 and the space 9 not facing each other via the fiber material sheet 4 are mixed. May be.
- a nonwoven fabric can be used as the first fiber sheet 2, and a two-layer or three-layer spunpond nonwoven fabric can be used as the nonwoven fabric.
- a hydrophilic nonwoven fabric as the first fiber sheet 2.
- a hydrophilic treatment such as adding a hydrophilizing agent to the composite fiber sheet 1 may be performed.
- Basis weight of the first fiber sheet 2. is preferably 10 ⁇ 50 g / m 2 as an example, but more preferably 10 ⁇ 20 g / m 2 from the viewpoint of production costs, but is not limited thereto.
- a nonwoven fabric can be used as the second fiber sheet 3, and a two-layer or three-layer spunpond nonwoven fabric can be used as the nonwoven fabric.
- a water-repellent nonwoven fabric As the water repellent nonwoven fabric, a three-layer spun pond nonwoven fabric can be used, and it is preferable to perform a water repellent treatment coated with a silicone-based, fluorine-based, paraffin metal-based, or alkylchromic croid-based water repellent.
- Basis weight of the water-repellent nonwoven fabric is preferably 10 ⁇ 50g / m 2 as an example, but more preferably 10 ⁇ 20g / m 2 in terms of production costs, but is not limited thereto. Moreover, it is good also considering the 1st fiber sheet 2 and the 2nd fiber sheet 3 as the same basis weight.
- the fiber material sheet 4 a paper material containing cellulose fibers can be used.
- a paper material formed from pulp paper or a material mainly composed of pulp can be used.
- Wood pulp, synthetic pulp, waste paper pulp, etc. can be used as raw material pulp.
- it is not restricted to natural fibers such as pulp, and regenerated fibers such as rayon can also be used.
- the basis weight of the fiber material sheet 4 is preferably 10 to 50 g / m 2, and is preferably smaller than the basis weight of the first fiber sheet 2 and the basis weight of the second fiber sheet 3.
- the basis weight of the fiber material sheet 4 is preferably 5% to 25% less than the basis weight of the first fiber sheet 2.
- the basis weight of the fiber material sheet 4 is preferably 5% to 25% less than the basis weight of the second fiber sheet 3.
- making the fabric weight of the fiber material sheet 4 larger than the fabric weight of the first fiber sheet 2 is not excluded.
- the fiber material sheet 4 when a paper material is used as the fiber material sheet 4, it is preferable to emboss, for example, the fiber material sheet 4 in order to give flexibility.
- various prints may be applied to the paper material in advance to form a printing layer.
- the surface of the printing layer may be subjected to a color fading prevention treatment, for example, by performing a varnishing process or adding a binder.
- the binder include known materials such as PVA, CMC, EVA, acrylic, and lacquer. Ink that has been subjected to color fading prevention treatment can also be used.
- a film having a polyolefin resin and an inorganic filler or a film having a polyethylene resin composition and an inorganic filler can be used.
- a polyethylene microporous film can be used as the moisture permeable film, but is not limited thereto. In this case, if a paper material is used as the fiber material sheet 4, transpiration and heat dissipation are excellent, so that heat in the body is transmitted to the outside through the fiber material sheet 4 and the moisture permeable film.
- the composite fiber sheet 1 in which a moisture permeable film is provided on the outer surface side of the second fiber sheet 3 is applied to, for example, the cloth of the gloves 310 and 310a, the raincoat 311, and the pants 10 and 312, the composite fiber sheet 1 is Since it is excellent in transpiration and heat dissipation, it is possible to realize gloves, raincoats, pants, and sheets that do not stuffy during use. Moreover, fashionability can also be improved by performing various printing on the fiber material sheet 4 or a moisture-permeable film.
- the space 9 existing in the non-bonded region 8 is also a part of the laminated sheet 15.
- the 1st fiber sheet 2, the 2nd fiber sheet 3, and the fiber material sheet 4 are laminated
- the area is not necessarily the same, and there may be a difference in area of several to 10%.
- the fiber material sheet 4 is softened by being pressed by the embossing roll 202a of FIG. For this reason, hereinafter, the process of applying a mechanical pressure to be softened is referred to as a mechanical softening process.
- the mechanical softening process is performed, but the surface condition may change or a minute hole may be opened by this mechanical softening process, and this may cause a variation in area. is there. For this reason, in this embodiment, an area difference of about several to 10% is allowed.
- the first fiber sheet 2, the second fiber sheet 3, and the fiber material sheet 4 have substantially the same area, which is the first in the composite fiber sheet 1 and the disposable pants 10. It can be said that the fiber sheet 2, the second fiber sheet 3, and the fiber material sheet 4 have the same shape. In the present embodiment, the same shape allows a slight difference in shape due to manufacturing errors.
- the fiber material sheet 4 is subjected to a mechanical softening process by embossing, and the fiber softening process allows the fiber material sheet 4 to be softened by hand. It can be applied to the material sheet 4. As a result, the composite fiber sheet 1 as a whole is flexible and feels soft. Further, fine holes can be formed in the fiber material sheet 4 during embossing by the embossing roll 202a. When such fine holes are formed, the first and second fiber sheets 2, 3 are formed by an adhesive. When the bonding (bonding process in the manufacturing process) is performed, the adhesive penetrates into the holes, and the adhesiveness between the first and second fiber sheets 2 and 3 and the fiber material sheet 4 is improved.
- the joining force between the second fiber sheets 2 and 3 and the fiber material sheet 4 is increased.
- the hole by embossing originates in an embossing pattern, and various shapes, such as a round shape, a square shape, a hexagon, a fracture
- the amount of the adhesive 7 when joining the first fiber sheet 2 and the fiber material sheet 4 and the amount of the adhesive 7 when joining the second fiber sheet 3 and the fiber material sheet 4 can be determined as appropriate. However, when the amount of the adhesive increases, the area of the non-bonding region 8 between the first fiber sheet 2 and the fiber material sheet 4 decreases and the non-bonding region 8 between the second fiber sheet 3 and the fiber material sheet 4 increases. Since the area is reduced, the area of the space portion 9 in each non-joining region 8 is thereby reduced. As a result, the space portions 9 and 9 in the non-bonded regions 8 and 8, the fiber gap of the first fiber sheet 2, the fiber gap of the second fiber sheet 3, and the fiber gap of the fiber material sheet 4 are mutually connected.
- the area of the water transpiration passage communicating with the water also becomes small, and the water transpiration and air permeability are reduced. Further, when the amount of the adhesive increases, the softness of the composite fiber sheet 1 is lost (hardened), and when the composite fiber sheet 1 is used as a cloth for a disposable product, the feeling when worn becomes poor. End up.
- the bonding area between the first fiber sheet 2 and the fiber material sheet 4 and the bonding area between the second fiber sheet 3 and the fiber material sheet 4 are both the area of the first fiber sheet 2 or the second fiber sheet 3. Is preferably 50% to 90%, more preferably 70% to 90%.
- the amount of the adhesive applied when the 1 m 2 second fiber sheet 3 and the fiber material sheet 4 are bonded together is preferably 0.8 to 5.0 g / m 2 .
- the amount of the adhesive applied is preferably 0.8 to 5.0 g / m 2 .
- the coating amount is less than 0.8 g / m 2 , the bonding strength between the first and second fiber sheets 2 and 3 and the fiber material sheet 4 becomes small, and peeling between the sheets is likely to occur.
- the coating amount exceeds 5.0 g / m 2 the area of the moisture transpiration passage becomes small, the moisture transpiration property and the air permeability decrease, and the softness of the composite fiber sheet 1 is lost.
- the adhesive application amount is more preferably 1.0 to 3.5 g / m 2 . Furthermore, in order to provide the composite fiber sheet 1 with improved softness, it is preferable that the upper limit value of the application amount of the adhesive is 1.5 g / m 2 .
- joining of the 1st fiber sheet 2 and the fiber material sheet 4 and joining of the 2nd fiber sheet 3 and the fiber material sheet 4 all are various joining normally used, such as an adhesive agent, an ultrasonic wave, and a heat seal.
- the method can be adopted.
- an adhesive is used, a hot melt adhesive, a solvent-type adhesive, or the like can be used.
- the space portions 9 may be opposed to each other with the fiber material sheet 4 interposed therebetween, or the space portions 9 may be shifted from each other.
- FIG. 4 is a schematic diagram for explaining the manufacturing process 200 of the composite fiber sheet 1
- FIG. 5 is a flowchart for explaining a method of manufacturing the composite fiber sheet 1.
- the arrangement of various devices in the manufacturing process 200 shown in FIG. 4 is merely an example, and the present invention is not limited to this.
- the case where the composite fiber sheet 1 is the laminated sheet 15 in FIG. 1B will be described as an example.
- Step S1 Joining of the second fiber sheet 3 and the fiber material sheet 4
- the fiber material sheet 4 wound around the sheet roll 201 is conveyed to the negative side in the X direction in FIG. 4 (left direction in the horizontal direction), embossed by a pair of embossing rolls 202a, and mechanically softened. Done.
- an embossing roll 202b which will be described later, is used.
- the embossing rolls 202a and 202b may be the same embossing roll, or may be different embossing rolls in terms of embossing pattern, size, material, and the like.
- a pattern (see FIG. 3) may be printed in advance on the fiber material sheet 4 wound around the sheet roll 201, and the above-described embossing may be performed on the fiber material sheet 4 on which the pattern is printed.
- the fiber material sheet 4 that has passed through the embossing roll 202a is coated with an adhesive by an adhesive application device 203a.
- an adhesive application device 203a In the present embodiment, a hot melt adhesive is used as the adhesive, but the present invention is not limited to this.
- FIG. 6 is a schematic diagram showing the adhesive application device 203a.
- the adhesive application device 203a accommodates the adhesive 7 and a plurality of nozzles 204 that apply the adhesive 7 to the first surface of the fiber material sheet 4 (joint surface with the second fiber sheet 3).
- 7 includes a storage unit 205 including a heating unit that heats 7 to a recommended temperature, and a controller 206 that controls the heating temperature of the heating unit.
- FIG. 6 schematically shows a state in which the adhesive 7 is applied to the fiber material sheet 4.
- the adhesive agent 7 and a functional substance will not mix or will mix. Can be reduced.
- the amount of adhesive applied by the adhesive applicator 203a is as described above.
- Step S2 Application of functional substance
- a functional substance is applied to the fiber material sheet 4.
- functional substances include deodorants, insect repellents, fragrances, waterproofing agents, antifouling agents, and antibacterial agents.
- the functional substance application device 150 has a nozzle and applies (sprays) the functional substance to the first surface of the fiber material sheet 4.
- the functional substance coating device 150 may be applied to the second surface of the fiber material sheet 4 (joint surface with the first fiber sheet 2), and is applied to a sheet other than the fiber material sheet 4 unless touched by the wearer. May be.
- a plurality of functional substance application devices 150 may be provided, and a plurality of functional substances are mixed and the functional substance application device 150 applies the functional substance to the fiber material sheet 4. May be.
- Deodorants that are functional substances include catechin, epigallocatechin, gallocatechin, epicatechin gallate, epigallocatechin galade, gallotannin, ellagitannin and iron-ascorbine, which are extracts from plants such as catechins and tannins.
- Acid chelate compounds, zirconium hydroxides, lanthanoid hydroxides, metal salts such as Zn, Cu, and Fe (for example, ZnSO 4 ), and the like can be used.
- alum (potassium alum) or polyphenol is applied by the functional substance applying device 150.
- a functional substance such as alum may use a liquid in which a metal is dissolved, it is preferably applied to a portion that does not directly touch the skin (for example, a sheet other than the skin side). Since the fiber material sheet 4 of this embodiment does not become the skin surface side, a metal substance does not touch a wearer.
- fragrance which is a functional substance
- fruits such as orange, lemon, lime and peach, flowers such as roses and lavender, essential oils such as mint and sandalwood (plants), etc.
- This fragrance may also be applied (sprayed) by the functional substance applying device 150.
- what is necessary is just to use a fragrance
- the fiber material sheet 4 is softened, and a polyol (for example, glycerin) that is a polyhydric alcohol can be used.
- the functional substance is applied before the second fiber sheet 3 and the fiber material sheet 4 are joined, but is preferably applied after passing through the embossing roll 202a. If a functional substance (for example, glycerin) is applied before passing through the embossing roll 202a, the fiber material sheet 4 is easily cut, and a piece of the fiber material sheet 4 is attached to the embossing roll 202a. This is because the production of the sheet 1 may be hindered.
- the functional substance may be applied to the fiber material sheet 4 or the second fiber sheet 3 after joining the second fiber sheet 3 and the fiber material sheet 4. Furthermore, you may make it apply
- the second fiber sheet 3 wound around the sheet roll 207 is conveyed to the negative side (downward) in the Z direction by the conveyance roll 208a and joined to the fiber material sheet 4 to which the adhesive 7a is applied by the pressing roll 209a.
- the bonding area between the second fiber sheet 3 and the fiber material sheet 4 described above is an area after passing through the pressing roll 209a.
- seat 4 are conveyed by the positive side (upward direction) of a Z direction with the conveyance rolls 208b and 208c.
- Step S3 Joining with the first fiber sheet 2
- the bonded second fiber sheet 3 and the fiber material sheet 4 are coated with the adhesive 7 on the second surface of the fiber material sheet 4 by the adhesive applying device 203b for bonding to the first fiber sheet 2.
- a hot melt adhesive is used as the adhesive 7, but is not limited to this.
- the adhesive 7 is heated to a predetermined temperature (for example, 60 ° C. to 150 ° C.) by the second adhesive application device 203b, and the application amount is as described above.
- the first fiber sheet 2 wound around the sheet roll 206 is conveyed to the negative side (downward) in the Z direction by the conveyance roll 208d.
- the pair of pressing rolls 209b presses and joins the first fiber sheet 2, the joined second fiber sheet 3 and the joined body of the fiber material sheet 4, thereby the laminated sheet 15 (composite fiber). Sheet 1) is produced.
- the bonding area between the first fiber sheet 2 and the fiber material sheet 4 described above is an area after passing through the pair of pressing rolls 209b.
- the laminated sheet 15 is laminated in the order of the first fiber sheet 2, the fiber material sheet 4, and the second fiber sheet 3 from the Z direction positive side (upper side).
- the first fiber sheet 2, the fiber material sheet 4, and the second fiber sheet 3 are laminated by the pair of pressing rolls 209b, the first fiber sheet 2, the fiber material sheet 4, and the second fiber sheet 3 are laminated. May have the same area and the same shape, and after the cutting step (for example, cutting by a cutting device 221 described later), the first fiber sheet 2, the fiber material sheet 4, and the second fiber sheet 3 have the same area, It may be the same shape.
- the fiber material sheet 4 is located between the first fiber sheet 2 and the second fiber sheet 3, and the fiber material sheet 4 is embossed by the pair of emboss rolls 202a.
- the dimension in the sheet width direction of each of the first fiber sheet 2 and the second fiber sheet 3 set in the sheet roll may be larger than the dimension in the width direction of the fiber material sheet 4.
- the laminated sheet 15 is embossed, that is, mechanically softened by a pair of embossing rolls 202b.
- the embossing of the laminated sheet 15 by the embossing roll 202b may be omitted.
- a non-woven fabric can be used, but the non-woven fabric is a material that is not easily wrinkled.
- a paper material containing cellulose fibers can be used as the fiber material sheet 4, but the paper material is a material that is easily wrinkled.
- the embossing roll 202a is used to form a laminated sheet 15 (composite fiber sheet 1) after deep embossing that opens a plurality of fine holes in the fiber material sheet 4, the laminated sheet 15 (composite fiber sheet 1) is used. Wrinkles are less likely to occur.
- the laminated sheet 15 (composite fiber sheet 1) is embossed by the embossing roll 202b, wrinkles are less likely to occur. For this reason, when the composite fiber sheet 1 of this embodiment is used as cloth for clothing, it is not necessary to perform ironing for wrinkling. The same effect can be obtained when a moisture permeable film is used instead of the second fiber sheet 3.
- the manufacturing method of the composite fiber sheet 1 in the present embodiment is as described above. Next, a method for manufacturing the disposable pants 10 using the composite fiber sheet 1 in the present embodiment will be described with reference to FIGS. 4 and 5.
- the manufacturing process of the disposable pants 10 starts from step S4 (first folding process) shown in FIG.
- Step S4 first return processing
- the laminated sheet 15 is conveyed to the positive side (right direction) in the X direction in FIG. 4, and is formed in the sheet width direction by the first folding device 217 to form the body mounting portion 12 (see FIG. 3) of the disposable pants 10. Both edges are folded.
- FIG. 7 is a schematic diagram for explaining the first folding processing. As shown in FIG. 7a, the laminated sheet 15 to be the exterior sheet 11 has a shape shown in FIG. 7b with the edges at both ends in the sheet width direction being valley-folded at the dotted line portions shown in FIG. 7a. This bent portion becomes the body mounting portion 12 of the disposable pants 10.
- the first folding device 217 is a known device having a folding plate for folding the laminated sheet 15 and a pressing portion that presses the folded laminated sheet 15. Further, the bent portion is bonded by various bonding methods such as heat sealing, bonding with a hot melt adhesive, and ultrasonic bonding.
- Step S5 Drilling process
- the laminated sheet 15 that has been subjected to the first folding process by the first folding apparatus 217 is conveyed to the positive side (right direction) in the X direction and is formed by the punching apparatus 218 to form the legs of the disposable pants 10. Drilling is performed.
- FIG. 8 is a diagram for explaining from the punching process to the joining process, and FIG. 8a shows the laminated sheet 15 that has been perforated. In this example, an elliptical shape passing through the center line of the laminated sheet 15 is shown. A mode in which the holes are provided is shown. Note that the hole punching process may be performed prior to the first folding process. Moreover, the shape of the hole is not limited to an elliptical shape.
- Step S6 Second return processing
- the second folding apparatus 219 causes the laminated sheet 15 to be folded in the center in the sheet width direction along the center dotted line in FIG. 8a.
- the second folding device 219 includes an arm member that lifts to fold the central dotted line of the laminated sheet 15 and a drive that drives the arm member so that the folded sheet 15 is set on a conveying member (not shown).
- FIG. 8b shows the laminated sheet 15 folded in the sheet width direction along the dotted line in the center of FIG. 8a. That is, the laminated sheet 15 is in a state of being folded in a mountain.
- Step S7 Joining process
- the laminated sheet 15 folded in the center in the sheet width direction is joined along the sheet width direction by the joining device 220 in order to form the disposable pants 10.
- the bonding apparatus 220 various bonding apparatuses such as an ultrasonic bonding apparatus, a heat seal apparatus, and a hot melt adhesive application apparatus can be used.
- FIG. 8 c shows the laminated sheet 15 joined by the joining device 220, and the laminated sheet 15 has a plurality of joint portions 16 formed along the sheet width direction.
- the 1st fiber sheet used as the skin surface side is the surface (outer surface) which exposed, and has shown the state which the junction part 16 is also exposed.
- the first fiber sheet 2 is positioned on the non-exposed surface (inner surface side) by reversing the front and back of the cut body, and the joining portion 16 is also positioned on the inner surface side.
- the junction part 16 is formed in the skin surface side when a user wears the disposable pants 10, the junction part 16 is not visually recognized, but the disposable pants 10 Fashionability can be improved. In particular, the resistance of the user who feels resistance to wearing a disposable diaper due to light incontinence can be eased.
- Step S8 Cutting process
- the laminated sheet 15 on which the joint portion 16 is formed is cut by a cutting device 221 provided with a cutter in order to obtain a single disposable pant 10. That is, the cutting device 221 cuts the center portion of the joint portion 16 along the width direction of the laminated sheet 15. Thereby, the single disposable pants 10 as shown in FIG. 3 is manufactured.
- the joining process and the cutting process can be performed at the same time. In this case, for example, a method of cutting simultaneously with the joining with a welding blade can be employed.
- the disposable pants 10 manufactured as described above have an exterior sheet 11 and a torso mounting portion 12 to be mounted around the user's waist.
- the exterior sheet 11 is laminated
- the body mounting portion 12 is formed by bending the exterior sheet 11.
- the composite fiber sheet 1 does not use an elastic member (for example, an elastic member such as polyurethane), but an elastic member may be used for the body mounting portion 12. If an elastic member is used for the trunk
- the disposable pants 10 formed in this way can be attached with an absorbent body 14 as shown in FIG.
- the attachment surface of the absorbent body 14 on the side opposite to the skin surface is provided with, for example, an adhesive tape (for example, two locations) and can be attached to and detached from the disposable pants 10.
- the absorber 14 may be fixedly attached to the disposable pants 10 instead of the removable type.
- the absorber 14 includes pulverized pulp and a superabsorbent polymer that is a particulate superabsorbent resin, and absorbs body fluids such as urine, sweat, and blood. Even when body fluid such as urine or sweat leaks from the absorber 14, the composite fiber sheet 1 is excellent in transpiration as described above, so that water vapor can be efficiently released to the outside. Wearing feeling is good and the liquid is absorbed, so there is no risk of soiling the pants or skirt.
- the disposable pants 10 can withstand several washings, the disposable pants 10 can be used for a certain period of time if the absorbent body 14 (FIG. 3) is replaced.
- an elastic member 305 is provided between the first fiber sheet 302 and the fiber material sheet 304, and the elastic sheet 305 is provided with stretchability by the elastic member 305.
- FIG. 9 is a plan view showing the composite fiber sheet 300 according to the present embodiment
- FIG. 10 is a view for explaining the collar portion 306 of the composite fiber sheet 300
- FIG. 11 is an enlarged view of the composite fiber sheet 300. is there.
- the composite fiber sheet 300 continues in the x direction, which is the length direction.
- the elastic member 305 is provided inside the composite fiber sheet 300, and a large number of uneven surfaces are formed by the large number of elastic members 305.
- the collar portion 306 is arranged in the x direction as shown in FIG. It is formed many times along.
- a concave / convex row 380 is formed between the elastic member 305 and the elastic member 305, and the concave / convex row 380 is formed by repeating the concave portion 306b and the convex portion 306a.
- the elastic member 305 is provided along the x direction, and applies an elastic force in the x direction to the composite fiber sheet 300.
- a plurality of such elastic members 305 are provided at predetermined intervals in the width direction (y direction).
- the elastic member 305 is linear and cylindrical, that is, the cross-sectional shape is circular.
- the elastic member 305 is made of synthetic rubber, natural rubber, or the like based on urethane, silicone, butadiene, or styrene / butadiene.
- the elastic member 305 may be a combination of any of these synthetic rubbers or natural rubbers.
- the elastic member 305 is not limited to a cylindrical shape, and may be a triangular prism shape, a quadrangular prism shape, other polygonal column shapes, or an elliptical column shape.
- the elastic member 305 may be a bundle of a plurality of linear members or a twisted one.
- a linear elastic body 305a having elasticity is used as the elastic member 305, and synthetic rubber or natural rubber based on urethane or silicone can be used as the linear elastic body 305a.
- a lattice-shaped elastic member can also be used, and in this case, it is possible to form the above-described many flange portions 306 in a single lattice shape.
- a stretchable film may be used in place of the large number of elastic members 305.
- a urethane film, a silicone film, an elastomer film, or the like can be used.
- the composite fiber sheet 300 includes a first fiber sheet 302 that is a breathable sheet, a second fiber sheet 303 that is also a breathable sheet, And a fiber material sheet 304 having liquid diffusibility interposed between the second fiber sheets 302 and 303, and the first and second fiber sheets 302 and 303 and the fiber material sheet 304 are laminated. It is comprised by the laminated sheet 315 which becomes.
- the first and second fiber sheets 302 and 303 constitute a fiber layer having air permeability
- the fiber material sheet 304 is a sheet constituting a fiber layer having liquid diffusibility.
- the lamination sheet 315 is comprised from 3 layers.
- the composite fiber sheet 300 is not limited to the one having the three-layer structure in which the first and second fiber sheets 302 and 303 and the fiber material sheet 304 are laminated, and as shown in FIG.
- a moisture permeable film may be laminated on the composite fiber sheet 300 at a position directly facing the fiber material sheet 304.
- it is laminated while avoiding a position that directly faces the first fiber sheet 302 that is a fiber sheet that is scheduled to be positioned on the skin surface side. It is preferable that
- the configuration of the composite fiber sheet 300 may be variously modified, and these may be used for the composite fiber sheet 301a and the composite fiber sheet 301c described later.
- the first fiber sheet 302 is used.
- the second fiber sheet 303 is on the outer side (non-skin surface side).
- the composite fiber sheet 300 includes a first fiber sheet 302 and a fiber material as shown in FIGS.
- the sheet 304 is bonded by an adhesive 307 applied to the peripheral surface of the elastic member 305, and a bonding region 330 is formed in the application portion of the adhesive 307.
- the adhesive 307 does not exist on the mutual contact surface between the first fiber sheet 302 and the fiber material sheet 304 in the portion where the elastic member 305 does not exist, the first fiber sheet 302 and the fiber material sheet 304 are joined.
- a non-bonded region 308 is formed, and a space 309 is formed in the non-bonded region 308.
- the first fiber sheet 302 and the fiber material sheet 304 are joined together at the location where the elastic member 5 is disposed. In addition, even in the part where the elastic member 305 does not exist, it may be partially joined.
- the composite fiber sheet 300 has a three-layer structure as shown in the laminated sheet 315, as shown in FIG. 13, the fiber material sheet 304 and the second fiber sheet 303 are in contact with each other. At this time, the mutual contact surfaces of the fiber material sheet 304 and the second fiber sheet 303 are partially bonded by the adhesive 307, and a bonded region 330 and a non-bonded region 308 are formed. A space 309 is formed. The non-joining region 308 and the space 309 formed between the fiber material sheet 304 and the second fiber sheet 303 are not shown in FIG.
- the space portion 309 formed in the non-bonded region 308 in the mutual contact surface between the first fiber sheet 302 and the fiber material sheet 304, the second fiber sheet 303, and the fiber material A space 309 formed in the non-bonded region 308 on the mutual contact surface of the sheet 304, a fiber gap of the first fiber sheet 302, a fiber gap of the second fiber sheet 303, and a fiber gap of the fiber material sheet 304
- a moisture transpiration passage is formed in communication with each other.
- the composite fiber sheet 300 can exhibit excellent moisture transpiration due to the action of the moisture transpiration passage. Moreover, it has the effect
- a large number of flange portions 306 are formed by continuously forming the convex portions 306 a and the concave portions 306 b.
- the elastic member 305 is disposed inside the composite fiber sheet 300 as a method of forming the flange portion 306 including the convex portion 306a and the concave portion 306b.
- a linear elastic body 305a having elasticity is used as the elastic member 305, and polyurethane is used as the linear elastic body 305a, for example.
- the linear elastic bodies 305a are arranged in the same direction as the length direction (the x direction in FIGS. 9 and 10) in the direction in which the lines extend, and many are arranged at predetermined intervals.
- Linear elastic bodies 305a are arranged in parallel. That is, a large number of linear elastic bodies 305a are arranged at intervals in the y direction, and a linear elastic body row is formed.
- the intervals at which the linear elastic bodies 305a are provided in the y direction may be substantially equal intervals or different intervals.
- the elastic forces of the linear elastic bodies 305a may all be the same, or may be all or partly different. In any case, when the composite fiber sheet 300 is used as the disposable pants 312, it is linear so that the elastic force of the body mounting portion 313 (see FIG. 20) is larger than the elastic force of other portions.
- the elastic body 305a may be disposed.
- the linear elastic body 305a is provided between the first fiber sheet 302 and the fiber material sheet 304.
- the ridges 306 are formed in a number of uneven rows 380 extending in the x direction in FIG. 9 and FIG. 10, and a large number of such rows of uneven rows 380 are formed in the y direction.
- a forming part is formed.
- the number of the linear elastic bodies 305a per unit area can be arbitrarily set, but if the number of the linear elastic bodies 305a is increased to reduce the distance between the linear elastic bodies 305a, a row of rows extending in the x direction.
- the shape of the convex part 306a and the concave part 306b in the collar part 306 formed at different positions can be formed in a uniform shape and the shape can be maintained. Thereby, the shape of the collar portion 306 is not lost, and the shape of the collar row is stabilized, which is preferable from the viewpoint of increasing the flexibility, moisture transpiration, heat dissipation, and moisture permeability of the composite fiber sheet 300.
- the interval between the flange portions 306, that is, the pitch interval between the convex portions 306a is preferably 2.00 mm to 7.00 mm, and more preferably 3.00 mm to 6.25 mm.
- the laminated sheet 315 Since the laminated sheet 315 has a long dimension, cutting to make the length dimension of the laminated sheet 315 in the length direction (the x direction in FIGS. 1 and 2) a predetermined length is performed. In this cutting, the first and second fiber sheets 302 and 303, the fiber material sheet 304, and the elastic member 305 are cut. Due to the cutting of the elastic member 305, the elastic member 305 in the pulled state is released from the pulling force and contracted by the restoring force. Due to the shrinkage stress at this time, the laminated sheet 315 receives a force in a direction in which the length is shortened, so that an uneven surface is formed on the laminated sheet 315, thereby forming a flange 306.
- the laminated sheet 315 is brought into a non-tensile state due to the restoring force of the elastic member 305, and the collar portion extending in the direction (y direction) orthogonal to the length direction (x direction) of the laminated sheet 315 in the non-tensile state
- a large number of 306 are formed, and a row of ridges is patterned on the laminated sheet 315, so that a composite fiber sheet 300 having a large number of ridges 306 is manufactured.
- the elastic force is imparted to the laminated sheet 315 by the elastic member 5 disposed inside the laminated sheet 315. Therefore, when the composite fiber sheet 300 is pulled in the x direction in FIGS. 9 and 10, the composite fiber sheet 300 expands and spreads due to the elastic member 305 extending. When this state is released, the elastic member 305 is contracted by its restoring force, and the composite fiber sheet 300 is also restored to the original state. Thus, since the composite fiber sheet 300 has elasticity, when the composite fiber sheet 300 is used as a disposable garment, the fit to the body is excellent. In addition, since the composite fiber sheet 300 is determined as a disposable garment with a size contracted by the restoring force of the elastic member 305, the surface area per unit volume can be increased.
- disposable fiber products manufactured by appropriately using the composite fiber sheet 1 shown in the first embodiment and / or the composite fiber sheet 300 shown in the second embodiment as a fabric include gloves, raincoats, pants , And sheets will be described below as third, fourth, fifth, and sixth embodiments, respectively.
- the same reference numerals as those in the second embodiment are applied to the same configurations as those in the second embodiment.
- FIGS. 14a and 14b show an example of a glove 310 using a composite fiber sheet as a disposable fiber product.
- the glove 310 is formed using the composite fiber sheet 301a and the composite fiber sheet 301b.
- the glove 310 is a glove with five fingertip parts separated.
- the composite fiber sheet 301a is arranged on the back side of the hand and the composite fiber sheet 301b is arranged on the palm side. These are joined together.
- the bonding means ultrasonic bonding, heat sealing, or the like is used.
- one of the pair of left and right gloves is shown (mainly assuming the right hand in the example of FIG. 14), and the other is omitted.
- the other is just to be comprised so that it may have the same layer structure as one.
- the composite fiber sheet 301a of the second embodiment is used as the composite fiber sheet 301a.
- the composite fiber sheet 301a is not limited to this example, and a film (for example, a moisture permeable film) may be used instead of the second fiber sheet 303.
- a film for example, a moisture permeable film
- the elastic member 305 is disposed so as to cross between the thumb and the little finger of the palm (horizontal direction in the figure), but is disposed so as to cross between the wrist and the fingertip (vertical direction in the figure). May be.
- the composite fiber sheet 301b uses the composite fiber sheet of the first embodiment, and is configured in the same manner as the composite fiber sheet of FIG. 1b.
- the composite fiber sheet 301b has a configuration in which a first fiber sheet 302, a fiber material sheet 304, and a second fiber sheet 303 are stacked in this order from the side in contact with the palm.
- the composite fiber sheet 301b is not limited to this example, and a film (for example, a moisture permeable film) may be used instead of the second fiber sheet 303.
- the elastic member 305 is provided between the first fiber sheet 302 and the fiber material sheet 304 or between the fiber material sheet 304 and the second fiber sheet 303.
- the composite fiber sheet of the second embodiment may be used.
- the composite fiber sheet 301a and the composite fiber sheet 301b can also have the same configuration.
- the glove 310 feels soft when the glove 310 is worn and has excellent breathability. Since the fiber material sheet 304 is bonded to the first fiber sheet 302, the sweat is adsorbed to the fiber material sheet 304 when the sweat comes out from the back and palm of the hand. Further, a bonding region 330 as shown in FIG. 13 and a space portion are formed on the mutual contact surface between the first fiber sheet 302 and the fiber material sheet 304 and on the mutual contact surface between the fiber material sheet 304 and the second fiber sheet 303, respectively.
- region 308 which has 309
- seat 304 and the 2nd fiber sheet 303 is abbreviate
- region is formed.
- FIG. 15 shows a universal glove 310a in which a pair of gloves can be used with either the left hand or the right hand.
- a composite fiber sheet 301a is disposed on one surface and a composite fiber sheet 301b is disposed on the other surface.
- the fingertip portion is a three-divided type, but may be a two-divided type.
- the universal glove 310a of the present embodiment has front / back compatibility (back side, palm side) in addition to left / right compatibility.
- the composite fiber sheet 301a and the composite fiber sheet 301b have the same laminated structure as the composite fiber sheet 301a and the composite fiber sheet 301b in the above-described glove 310 (FIG. 14), respectively. If the composite fiber sheet 301a side is used as the back side of the hand, the elastic member 305 is expanded and contracted to fit the user's hand, and the palm side does not have the elastic member 305 so that it can be easily grasped. Suitable as On the other hand, when touching a hot object (for example, a handle of a kettle), if the side of the composite fiber sheet 301a with the elastic member 305 is set to the palm side of the hand, the flange 306 formed by the elastic member 5 is interposed. Since it touches a hot object, the contact area where the handle touches the hand can be reduced, or the way of heat transmission is slowed down, making it difficult to feel the heat.
- a hot object for example, a handle of a kettle
- ⁇ Gloves 310 and 310a can be used for various purposes such as cold protection, medical use, work use (assembly, adjustment, cleaning, cleaning), and sports.
- a melt blown nonwoven fabric that is formed of ultrafine fibers having a fine diameter in the range of 2 to 20 microns and has excellent filter performance.
- a meltblown nonwoven fabric layer may be laminated on the laminated sheet 315, and a meltblown nonwoven fabric may be used for at least one of the first and second fiber sheets 302 and 303.
- a mittens shape can also be employ
- FIG. 16 is a schematic diagram showing a manufacturing process 400 of the glove 310
- FIG. 17 is a flowchart showing a manufacturing method of the glove 310.
- the arrangement of various devices in the manufacturing process 400 of FIG. 16 is merely an example, and the present invention is not limited to this.
- the manufacturing method of the glove 310 is demonstrated here, the manufacturing method of the universal glove 310a and a mittens is also the same.
- Step S1 Production of composite fiber sheet 301a
- the fiber material sheet 304 wound around the sheet roll 404a is conveyed in the X direction, and is embossed, that is, mechanically softened by the pair of emboss rolls 410a.
- a pattern is pre-printed on the back surface of the fiber material sheet 304 wound around the sheet roll 404a (the surface facing the second fiber sheet 303), and the fiber material sheet 304 on which the pattern is printed, Is embossed.
- the fiber material sheet 304 that has passed through the embossing roll 410 a is applied with an adhesive 307 by an adhesive application device 411 for bonding with the first fiber sheet 302.
- a hot melt adhesive can be used as the adhesive 307, but is not limited thereto.
- the adhesive application device 411 has a plurality of nozzles and sprays the hot melt adhesive in a mist form.
- the adhesive 307 is heated to a predetermined temperature (for example, 60 ° C. to 150 ° C.) by the adhesive application device 411, and the hot melt adhesive is applied at an application amount of 0.8 g / m 2 to 2.0 g / m 2 .
- the first fiber sheet 302 wound around the sheet roll 402a is transported to the negative side (downward) in the Z direction by the transport roll 412a, and is joined to the fiber material sheet 304 coated with the adhesive 307 by the pressing roll 413a.
- the adhesive 307 is applied to the elastic member 305 wound around the elastic roll 405 by the adhesive application device 411.
- a hot melt adhesive can be used as the adhesive 307 applied to the peripheral surface of the elastic member 305, but is not limited thereto. Further, the hot melt adhesive used in the present embodiment may be the same in each step, or may be different (for example, different in viscosity).
- the adhesive 307 is heated to a predetermined temperature (for example, 60 ° C. to 150 ° C.) by the adhesive application device 411. A plurality of elastic rolls 105 are arranged according to the number of elastic members 5 to be used.
- the second fiber sheet 303 wound around the sheet roll 403a is conveyed to the positive side (upward) in the Z direction by the conveyance roll 412b.
- the first fiber sheet 302 and the fiber material sheet 304 joined as described above are conveyed to the negative side (downward) in the Z direction.
- the pair of pressing rolls 413b presses and bonds the second fiber sheet 303 and the joined body of the first fiber sheet 302 and the fiber material sheet 304 through the elastic member 305 to which the adhesive 307 is applied. .
- the composite fiber sheet 301a is manufactured.
- the composite fiber sheet 301a is formed as a laminated sheet in which the first fiber sheet 302, the fiber material sheet 304, the elastic member 305, and the second fiber sheet 303 are laminated in this order from the positive side in the Z direction.
- Step S2 Heat treatment of the composite fiber sheet 301a
- the elastic member 305 is disposed inside the composite fiber sheet 301a, whereby an elastic force is applied to the composite fiber sheet 301a.
- the surface area of the composite fiber sheet 301a can be increased from about 1.5 times to about 5 times. For example, if the required dimension is 100 mm when the elastic member 305 is contracted in the x direction in FIG. 9, the composite fiber sheet 301a of 150 mm to 500 mm is used with the elastic member 305 extended.
- the contraction rate (catalog value or theoretical value), which is a ratio of contracting from a state stretched to a predetermined length to the most contracted state by the restoring force of the elastic member 305, is 1/3
- the composite fiber sheet 301a stretches.
- the dimension in the x direction in the state needs to be 300 mm obtained by multiplying the dimension 100 mm required in the contracted state by the reciprocal of the contraction rate of the elastic member 305.
- the first fiber sheet 302, the second fiber sheet 303, and the fiber material sheet 304 are actually bonded after being joined via the elastic member 305, or the stretched state is reduced by reducing the transport speed of the transport roll. Even if it cancels
- This may be caused by, for example, problems in the temperature and humidity of the manufacturing plant, particularly when the temperature is not controlled and the temperature is low, the problem of the elastic member 305 alone (for example, residual strain of the elastic member 5), and the application to the elastic member 305.
- This is due to the decrease in shrinkage of the elastic member 305 due to the curing of the adhesive 307 and the rigidity of the fiber material sheet 304.
- the application conditions application temperature, application amount, viscosity, etc.
- the heating device 414 is a non-contact heating device that supplies air of, for example, 30 ° C. to 80 ° C.
- the composite fiber sheet 301a is conveyed in an expanded state.
- non-contact heating is performed by the heating device 414 as the heat treatment, but contact heating may be performed by bringing a heating roll (not shown) into contact with the composite fiber sheet 301a.
- the first fiber sheet 302, the second fiber sheet 303, and the fiber material sheet 304 are better bonded, and the generation of wrinkles and bonding peeling can be prevented. This can also be applied to the manufacture of the composite fiber sheet 301b described later.
- Step S3 Manufacture of composite fiber sheet 301b
- the fiber material sheet 304 wound around the sheet roll 404b is conveyed to the positive side (right direction) in the X direction, and embossed, that is, mechanically softened by the pair of emboss rolls 410b.
- the fiber material sheet 304 wound around the sheet roll 404b may be printed in advance.
- An adhesive 307 is applied to the fiber material sheet 304 that has passed through the embossing roll 410b by an adhesive application device 411 for bonding to the second fiber sheet 303.
- the second fiber sheet 303 wound around the sheet roll 403b is conveyed to the negative side (downward) in the Z direction by the conveyance roll 412c, and the fiber material sheet 304 coated with the hot melt adhesive and a pair of pressing rolls 413c. Are joined together. Thereafter, an adhesive 307 is applied to the fiber material sheet 304 by an adhesive application device 411 for bonding to the first fiber sheet 302.
- the first fiber sheet 302 wound around the sheet roll 402b is joined to the joined body of the second fiber sheet 303 and the fiber material sheet 304 by a pair of pressing rolls 413d. Thereby, the composite fiber sheet 301b is manufactured.
- the manufacturing process 400 may be simplified by omitting the manufacturing portion of the composite fiber sheet 301b.
- Step S4 Joining of composite fiber sheet 301a and composite fiber sheet 301b
- the composite fiber sheet 301a and the composite fiber sheet 301b are pressed by the pressing roll 413e, and the composite fiber sheet 301b is placed on the composite fiber sheet 301a. In this state, the composite fiber sheet 301a and the composite fiber sheet 301b are not joined.
- the joining device 415 joins the composite fiber sheet 301a and the composite fiber sheet 301b by heat sealing, ultrasonic joining, or the like. In this embodiment, joining according to the external shape of the glove 310 (310a) is performed.
- the joining by the joining device 415 is a joining including a margin in consideration of a cutting error in a cutting process described later.
- joining device 415 joining using an adhesive may be performed, or joining by sewing may be performed.
- this embodiment demonstrated the case where the composite fiber sheet 301a was provided with the elastic member 305, it is not necessary to necessarily provide the elastic member 305. That is, the composite fiber sheet 301b may be used instead of the composite fiber sheet 301a.
- Step S5 Cutting
- the composite fiber sheet 301a and the composite fiber sheet 301b joined in accordance with the outer shape of the glove 310 are cut by a cutting device 416 having a cutter, whereby the glove 310 is manufactured.
- cutting is performed after joining the composite fiber sheet 301a and the composite fiber sheet 301b, but this order may be changed. Or you may make it cut
- the composite fiber sheet 301a and the composite fiber sheet 301b may be joined and cut using a seal cutter that combines ultrasonic joining and a cutter. According to this, since the composite fiber sheet 301a and the composite fiber sheet 301b can be joined and cut at the same time, the manufacturing efficiency of the glove 310 can be increased.
- FIG. 18 is a diagram illustrating an example in which the raincoat 311 is formed by joining the composite fiber sheet 301c and the composite fiber sheet 301d.
- the composite fiber sheet 301c the composite fiber sheet of the second embodiment may be used as appropriate.
- the composite fiber sheet is formed.
- the composite fiber sheet 301c is not limited to this example, and the composite fiber sheet of the first embodiment may be used as appropriate.
- the composite fiber sheet of the first embodiment is used for the composite fiber sheet 301d.
- the first fiber sheet 302, the fiber material sheet 304, and the moisture permeable film 320 are sequentially laminated from the wearer's skin surface.
- stacked in order of the 1st fiber sheet 302, the fiber material sheet 304, and the 2nd fiber sheet 303 from a wearer's skin surface may be employ
- the composite fiber sheet 301d may be the composite fiber sheet of the second embodiment.
- the composite fiber sheet 301d is provided with the elastic member 305 between the first fiber sheet 302 and the fiber material sheet 304, or between the fiber material sheet 304 and the second fiber sheet 303. It can be specifically realized.
- the composite fiber sheet 301c and the composite fiber sheet 301d can have the same configuration.
- FIG. 18 shows an embodiment of the raincoat 311.
- the composite fiber sheet 301c and / or 301d that is the fabric of the raincoat 311 is the composite fiber sheet of the second embodiment
- the composite is made so that the elastic member 305 expands and contracts in the X direction in FIG. It is preferable that a fiber sheet is disposed. This is because the raincoat 311 can be configured to fit the wearer's body.
- the arrangement of the elastic member 305 so as to expand and contract in the Y direction is not excluded.
- at least part of the composite fiber sheet that is the fabric of the raincoat 311 is along the Y direction in FIG.
- the elastic member 305 may be disposed so that a part of the raincoat 311 expands and contracts in the Y direction.
- the first fiber sheet 302 having good air permeability in the composite fiber sheet is disposed on the skin surface side, and the fiber material sheet 304 is disposed on the first fiber sheet 302 via the elastic member 305.
- the raincoat 311 of this 4th Embodiment has the effect that there is no feeling of stuffiness which a wearer feels compared with the conventional raincoat, and comfort is good.
- the moisture permeable film 320 releases moisture to the outside and prevents rain from entering from the outside, so that the wearer can wear the raincoat 311 comfortably.
- FIG. 19 is a schematic diagram showing a manufacturing process 500 of the raincoat 311. A description of the same parts as those in the manufacturing process 400 described above is omitted.
- the difference between the above-described composite fiber sheet 301a and the composite fiber sheet 301c in the present embodiment uses a moisture permeable film 320 wound around a film roll 420a instead of the second fiber sheet 303 wound around the sheet roll 402a. The point is that the sheet roll 402a holding the first fiber sheet 302 is disposed below, and the film roll 420a holding the moisture permeable film 320 is disposed above.
- the difference between the composite fiber sheet 301b and the composite fiber sheet 301d is that the moisture permeable film 320 wound around the film row 420b is used instead of the second fiber sheet 303 wound around the sheet roll 403b,
- the sheet roll 402b that holds the fiber sheet 302 is disposed above, and the film roll 420b that holds the moisture permeable film 320 is disposed below.
- the moisture-permeable film 320 of the composite fiber sheet 301c and the moisture-permeable film 320 of the composite fiber sheet 301d serve as a bonding surface.
- the first fiber sheet 302 of the composite fiber sheet 301a and the first fiber sheet 302 of the composite fiber sheet 301b are bonded surfaces, but the moisture permeable films 20 are used as bonded surfaces.
- the bonding strength is increased.
- the raincoat 311 with improved durability against wind and rain can be realized.
- the bonding strength between the moisture-permeable films 320 is stronger than the bonding between the fiber material sheets 304.
- the moisture permeable film 320 of the composite fiber sheet 301c and the moisture permeable film 320 of the composite fiber sheet 301d are joined to obtain a joined body, and then the joined body is cut and the front and back sides of the joined body are turned over. A step of turning over (not shown) is added. Therefore, the moisture-permeable film 320 joined on the inner side in the state of the joined body constitutes the outer surface when the raincoat 311 is formed.
- various methods such as the method of flipping the composite fiber sheets 301c and 301d with a mechanical arm, can be employed.
- the moisture permeable film 320 is joined inside and turned upside down, when the raincoat 311 is worn, the moisture permeable film 320 is on the outside and the joining surface is on the inside, so the bonding strength of the composite fiber sheets 301c and 301d is increased.
- the raincoat 311 having a good appearance can be realized.
- the moisture permeable film 320 is used in place of the second fiber sheet 303 and a turnover process using a turnover device or the like is added, the outer side is a moisture permeable film and the bonding surface is The inner gloves 310 (310a) can be realized.
- the joining step of the composite fiber sheet 301d and the composite fiber sheet 301c is performed.
- the raincoat 311 not only the joining of the composite fiber sheet 301d and the composite fiber sheet 301c but also the step of joining the composite fiber sheets 301d and the composite fiber sheets 301c is performed by appropriately changing the component design of the raincoat 311.
- a part formed by one composite fiber sheet 301 d is divided into a plurality of parts to be parts, and the parts are to be joined.
- Such joining of the composite fiber sheet 301d and the composite fiber sheet 301c, and joining of the composite fiber sheets 301d and between the composite fiber sheets 301c can be realized by a joining device 415 as shown in FIG.
- a method such as heat sealing or ultrasonic bonding can be appropriately selected.
- a method using ultrasonic bonding using an ultrasonic sewing machine is preferable. Can be adopted.
- the raincoat 311 suppresses as much as possible the rain from entering from the joined portions such as the joined portions of the fiber sheet 301d and the composite fiber sheet 301c, the joined portions of the composite fiber sheets 301d, and the joined portions of the composite fiber sheets 301c. is important.
- the method by ultrasonic bonding using an ultrasonic sewing machine water intrusion from the bonded portion can be effectively suppressed.
- a pattern in which there are a plurality of (for example, 2 to 4) parallel interrupted lines and the interrupted parts are not parallel water can be allowed to pass through while suppressing intrusion of water at the joined part.
- the raincoat provided with the front body and the back body was mainly assumed and demonstrated, this invention is not limited to this.
- a so-called poncho type may be used as a raincoat, and in this case, it is formed by a single composite fiber sheet.
- this composite fiber sheet the composite fiber sheets 301c and 301d mentioned in this embodiment can be used.
- FIG. 20 is a diagram illustrating an example in which the composite fiber sheet 301 a and the composite fiber sheet 301 b are used as the disposable pants 312 as in the case of the gloves 310.
- the composite fiber sheet 301 b constitutes the front side and the rear side
- the composite fiber sheet 301 a joins the front composite fiber sheet 301 b and the rear composite fiber sheet 301 b.
- drum mounting part 313 is comprised by the composite fiber sheet 301b.
- the composite fiber sheet 301a uses the composite fiber sheet of the second embodiment.
- the first fiber sheet 302, the elastic member 305, the fiber material sheet 304, and the second fiber sheet 303 are arranged in this order from the inner side (skin surface side). It has a laminated structure that is laminated.
- the composite fiber sheet 301a may use the moisture permeable film 320 instead of the second fiber sheet 303, or may have a structure in which the moisture permeable film 320 is laminated on the non-skin surface side of the laminated structure.
- the composite fiber sheet 301b uses the composite fiber sheet of the first embodiment, and is laminated in the order of the first fiber sheet 302, the fiber material sheet 304, and the second fiber sheet 303 from the inside (skin surface side). It has a laminated structure.
- the composite fiber sheet 301b may use the moisture permeable film 320 instead of the second fiber sheet 303, or may have a structure in which the moisture permeable film 320 is laminated on the laminated structure.
- the composite fiber sheet 301b is the composite fiber sheet of the first embodiment, but is not limited thereto, and the composite fiber sheet of the second embodiment may be used. That is, the elastic member 305 may be further provided in the composite fiber sheet 301b. Specific examples of the position where the elastic member 305 is provided include a space between the first fiber sheet 302 and the fiber material sheet 304. Although not shown, the fiber material sheet 304 can be printed, thereby improving the fashionability of the disposable pants 312.
- FIG. 21 is a schematic diagram showing a manufacturing process 600 of the pants 312. A description of the same parts as those in the manufacturing process 400 (FIG. 16) is omitted.
- the difference from the manufacturing process 400 is that the arrangement of the first fiber sheet 302 and the second fiber sheet 303 is different.
- the joint surface of the composite fiber sheet 301a and the composite fiber sheet 301b becomes the inner side (skin surface side) of the pants 312 and the joint surface is not exposed to the outside, thereby improving the fashionability of the pants 312. Can be made.
- Sheets as disposable fiber products can use the composite fiber sheet according to the first embodiment and / or the composite fiber sheet according to the second embodiment as a fabric, and can be obtained by appropriately cutting the fabric into dimensions. It is preferable to use the composite fiber sheet of the first embodiment in that the size of the fabric can be further stabilized. In terms of being able to form a sheet having thickness and elasticity, it is preferable to use the composite fiber sheet of the second embodiment.
- the fabric composed of the composite fiber sheet of the first embodiment or the composite fiber sheet of the second embodiment may be selected according to the properties of the sheet required based on the conditions such as the purpose of the sheet, and the composite fiber sheet is configured. Attributes such as the material of the fiber sheet and the fiber material sheet to be performed may be appropriately selected.
- the viewpoint that the sheet is preferably configured to have moisture absorption such as sweat on the contact surface side with the skin surface and to be able to suppress water intrusion to the non-contact surface side with the skin surface. Therefore, it is preferable that a composite fiber sheet as shown in the example of FIGS. 23a and 23b is employed when the first fiber sheet 2 is a surface that contacts the skin surface.
- Gloves 310, raincoat 311, pants 312 and sheets which are disposable fiber products described above, are disposable and can withstand several washings, so they are economical and can contribute to resource saving and the environment. Can also be considered. Gloves 310, raincoat 311, pants 312 and sheets can be used regardless of age (for children or adults), sex (for men or women), or body shape, and for animals such as pets. It can also be applied.
- the composite fiber sheet in each embodiment described above has a basic structure in which a fiber sheet (nonwoven fabric) is partially bonded to a fiber material sheet (paper material), and has excellent moisture transpiration.
- the composite fiber sheet in each embodiment can be said to be the same material and the same effect material as the paper material in that it has excellent moisture transpiration.
- the paper material lacks flexibility, but the composite fiber sheet in each embodiment is rich in flexibility. From this point, it can be regarded as a new paper material in which the property of flexibility is added to the paper material. In other words, it can be positioned as a new type of paper material whose properties are improved by combination with a fiber sheet (nonwoven fabric).
- Example 1 The composite fiber sheet of Example 1 has a configuration in which a first fiber sheet, a fiber material sheet, a moisture permeable film, and a second fiber sheet are laminated in this order.
- a hydrophilic spunbonded nonwoven fabric (weight per unit area 15 g / m 2 ) was used as the first fiber sheet, and a 100% pulp paper (paper sheet for tissue paper: 13 g per unit area) was used as the fiber material sheet. / M 2 ) was used without printing.
- a milky white film weight per unit area: 18 g / m 2
- a water-repellent spunbonded nonwoven fabric weight per unit area: 15 g / m 2
- Example 2 A laminated sheet obtained by printing a fiber material sheet (paper) in the same layer configuration as in Example 1 was used as the composite fiber sheet of Example 2.
- Example 3 The composite fiber sheet of Example 3 has the same layer configuration as that of Example 1.
- a water-repellent spunbonded nonwoven fabric (weight per unit area: 15 g / m 2 ) was used as the first fiber sheet, and a paper of 100% pulp (paper sheet for tissue paper: 13 g per unit area) as the fiber material sheet. / M 2 ) was used without printing.
- a milky white film (weight per unit area: 18 g / m 2 ) was used as the moisture-permeable film, and a water-repellent spunbonded nonwoven fabric (weight per unit area: 40 g / m 2 ) was used as the second fiber sheet.
- These laminated sheets of the total basis weight of 87.2 g / m 2 obtained by bonding to that of Example 3 by hot melt adhesive (total basis weight 1.2 g / m 2 hot melt adhesive).
- Example 4 The composite fiber sheet of Example 4 has a configuration in which a first fiber sheet and a fiber material sheet are laminated.
- a water-repellent spunbonded nonwoven fabric weight per unit area: 15 g / m 2
- a paper of 100% pulp paper sheet for tissue paper: 13 g per unit area
- / M 2 was used without printing.
- Comparative Example 1 The composite fiber sheet of Comparative Example 1 has a configuration in which a first fiber sheet, a moisture permeable film, a fiber material sheet, and a second fiber sheet are laminated in this order.
- a water-repellent spunbonded nonwoven fabric (basis weight 15 g / m 2 ) was used as the first fiber sheet, and a milky white film (basis weight 18 g / m 2 ) was used as the moisture permeable film.
- paper of 100% pulp paper sheet for tissue paper: basis weight 13 g / m 2
- a hydrophilic spunbond nonwoven fabric weight per unit area
- the water-absorbing quick drying properties (transpiration rate) of the laminated sheets of Examples 1 to 4 and Comparative Example 1 described above were evaluated.
- the water-absorbing quick-drying property (transpiration property) was subjected to a transpiration (ii) test (Boken standard BQEA028), and both water absorption property and quick-drying property were comprehensively evaluated.
- ii transpiration test
- the test piece about 9 cm in diameter was produced, respectively, and the mass (W) of each test piece and a petri dish was measured.
- 0.1 mL of water was dropped onto the petri dish, a test piece was placed thereon, and the mass (W0) was measured.
- the transpiration rate for 20 minutes after the start of the test is preferably 50% or more for woven fabrics and 40% or more for knitted fabrics for sports applications. It is said that 40% or more is preferable and 30% or more is preferable. Therefore, since the sheet material of Example 1 can obtain a transpiration rate of 40% or more, it can be said that it can be comfortably worn for both sports use and general use. From the above, it can be seen that the composite fiber sheet of the present example composed of the laminated sheets of Examples 1 to 4 has extremely high water absorption and quick drying (transpiration rate).
- the total weight per unit area of the laminated sheet is, for example, adjusted to the weight per unit area of the first fiber sheet and the second fiber sheet to be 50 g / m 2 to 100 g / m 2. ) Can be obtained.
- the unit of drying rate (increase in transpiration rate per unit time) is% / min, and the unit of drying time (time until transpiration rate reaches 100% (Drying time)) is in minutes. It can be seen from Table 2 that the laminated sheets of Examples 1 to 4 have a drying rate of 2.0 or more and a drying time of 50 minutes or less.
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Abstract
Description
(1)通気性を有する繊維シートと、液拡散性を有する繊維材料シートとを積層してなる積層シートからなり、前記繊維シートと前記繊維材料シートとは相互に接触しており、この相互接触面において、前記繊維シートと前記繊維材料シートとが接合されている接合領域とそれらが接合されていない非接合領域とが形成され、前記非接合領域は空間部を有し、前記空間部と前記繊維シートの繊維空隙と前記繊維材料シートの繊維空隙とが相互に連通した水分蒸散通路が形成されていることを特徴とする複合繊維シート、
(2)前記(1)に記載の複合繊維シートを用いて形成してなる使い捨て繊維製品、
(3)前記(2)に記載の使い捨て繊維製品が手袋であり、前記手袋は、前記第1の繊維シートと、前記繊維材料シートと、前記弾性部材と、前記第2の繊維シートを積層してなる手袋用第1複合繊維シートと、前記第1の繊維シートと、前記繊維材料シートと、前記第2の繊維シートを積層してなる手袋用第2複合繊維シートとを接合してなる手袋、
(4)前記(2)に記載の使い捨て繊維製品がレインコートであり、前記レインコートは、前記第1の繊維シートと、前記弾性部材と、前記繊維材料シートと、前記透湿性フィルムを積層してなるレインコート用第1複合繊維シートと、前記第1の繊維シートと、前記繊維材料シートと、前記透湿性フィルムを積層してなるレインコート用第2複合繊維シートとを接合してなるレインコート、
(5)通気性を有する繊維シートと、液拡散性を有する繊維材料シートをそれぞれ供給し、これらのシートを接合手段により部分的に接合して積層シートを形成することにより第1複合繊維シートを製造する工程と、前記と同様の工程で第2複合繊維シートを製造する工程と、前記第1複合繊維シートと前記第2複合繊維シートを接合する工程と、接合と同時に或いは接合後に所定形状に裁断する工程を含むことを特徴とする使い捨て繊維製品の製造方法、を提供する。
本発明の第1実施形態に係る複合繊維シート1について説明する。図1bは本実施形態の複合繊維シート1の縦断面図である。図1bにおいて、複合繊維シート1は、通気性を有する第1の繊維シート2と、同様に通気性を有する第2の繊維シート3と、第1と第2の繊維シート2、3の間に介在して設けられる液拡散性を有する繊維材料シート4とを有し、第1と第2の繊維シート2、3と繊維材料シート4とを積層してなる積層シート15により構成される。第1と第2の繊維シート2、3は通気性を有する繊維層を構成するものであり、また繊維材料シート4は液拡散性を有する繊維層を構成するシートである。このように、複合繊維シート1は、3層から構成されている。
シートロール201に巻かれた繊維材料シート4は、図4におけるX方向の負側(水平方向の左方向)に搬送され、一対のエンボスロール202aによりエンボス加工が施され、機械的柔軟化処理が行われる。なお、製造工程200では後述するエンボスロール202bが用いられるが、エンボスロール202aと202bは同じエンボスロールを用いてもよく、或いはエンボスパターン、大きさ、材質等において異なるエンボスロールを用いてもよい。シートロール201に巻かれた繊維材料シート4に模様(図3参照)を予め印刷しておき、模様が印刷された繊維材料シート4に対して、上述のエンボス加工を施すようにしてもよい。
繊維材料シート4には、機能性物質が塗布される。機能性物質として、消臭剤、虫除剤、香料、防水剤、防汚剤、抗菌剤等が挙げられる。本実施形態では、消臭剤、香料及び柔軟剤を機能性物質として塗布する場合について説明するがこれに限定されるものではない。
接合された第2の繊維シート3と繊維材料シート4とは、第1の繊維シート2との接合のため、繊維材料シート4の第2面に接着剤塗布装置203bにより接着剤7が塗布される。本実施形態では、接着剤7としてホットメルト接着剤を用いるが、これに限定されるものではない。なお、第2接着剤塗布装置203bにより接着剤7は所定温度(例えば60℃~150℃)まで加熱されており、その塗布量は前述の通りである。
積層シート15は、図4におけるX方向の正側(右方向)に搬送され、使い捨てパンツ10の胴部装着部12(図3参照)を形成するために第1の折り返し装置217によりシート幅方向両端縁が折り返される。図7は、第1の折り返し処理を説明するための略図である。図7aに示すように、外装シート11となる積層シート15は、シート幅方向両端における縁部が図7aに示す点線部分で谷折りされて、図7bに示す形状となる。この折り曲げられた部分が使い捨てパンツ10の胴部装着部12となる。第1の折り返し装置217は、積層シート15を折り返す折り板と、折り返された積層シート15を押圧する押圧部とを有する公知のものである。また、この折り曲げられた部分は、ヒートシール、ホットメルト接着剤による接合、超音波接合などの各種接合方法により接合される。
第1の折り返し装置217により第1の折り返し処理が施された積層シート15は、X方向の正側(右方向)に搬送され、使い捨てパンツ10の脚部を形成するために穴開け装置218による穴開けが行われる。穴開け装置218としては、例えばダイカットロールを用いることができるが、これに限定されるものではない。図8は穴開け処理から接合処理までを説明するための図であり、図8aは、穴開けが施された積層シート15を示すもので、この例では積層シート15の中心線を通る楕円状の穴が設けられた態様が示されている。なお、穴開け処理は第1の折り返し処理に先立って行われてもよい。また、穴の形状は楕円状に限るものではない。
第2の折り返し処理は、ステップS7の接合処理に備えて、第2の折り返し装置219により積層シート15を図8aの中央の点線に沿ってシート幅方向中央で山折りにする。第2の折り返し装置219は、積層シート15の中央の点線を山折りするために持ち上げるアーム部材と、山折りされた積層シート15が図示しない搬送部材にセットされるようにアーム部材を駆動する駆動部とを有する。図8bは、図8aの中央の点線に沿ってシート幅方向に折り返された積層シート15を示している。すなわち、積層シート15は山折りされた状態になっている。
シート幅方向中央で山折りされた積層シート15は、使い捨てパンツ10を形成するために接合装置220によりシート幅方向に沿って接合が行われる。接合装置220としては、超音波接合装置、ヒートシール装置、ホットメルト接着剤塗布装置等の各種接合装置を用いることができる。図8cは、接合装置220により接合された積層シート15を示し、積層シート15にはシート幅方向に沿って接合部16が複数形成されている。図8cでは、肌面側となる第1の繊維シートが露出した面(外面)となっており、接合部16も露出している状態を示している。次の裁断処理工程(ステップS8)の後で、この切断体の表裏を反転することにより、第1の繊維シート2が非露出面(内面側)に位置し、また接合部16も内面側に位置する。このため、本実施形態においては、使用者が使い捨てパンツ10を着用した場合に、接合部16が肌面側に形成されているので、接合部16が視認されることがなく、使い捨てパンツ10のファッション性を向上させることができる。特に、軽失禁などで紙おむつの着用に抵抗を感じる使用者の抵抗感を和らげることができる。
接合部16が形成された積層シート15は、1枚の使い捨てパンツ10とするためカッターを備えた裁断装置221により裁断される。即ち、裁断装置221は、接合部16の中心部を積層シート15の幅方向に沿って裁断する。これにより、図3に示すような1枚の使い捨てパンツ10が製造される。尚、接合処理と裁断処理を同時に行うこともでき、この場合、例えば溶着刃により接合と同時に裁断を行う方法を採用することができる。
次に、本発明の第2実施形態に係る複合繊維シートについて説明する。本実施形態は、第1の繊維シート302と繊維材料シート304との間に弾性部材305を有し、前記弾性部材305により積層シート315に伸縮性が付与されてなる構成を有する。
図14a、図14bには使い捨て繊維製品としての複合繊維シートを用いた手袋310の例が示されている。手袋310は、複合繊維シート301aと複合繊維シート301bを用いて形成されている。図14a、図14bに示すように、手袋310は、指先部分が5本に分離した手袋であり、例えば、手の甲側に複合繊維シート301aを配置し、掌側に複合繊維シート301bを配置して、これらを接合して形成されている。接合手段としては、超音波接合やヒートシール等が用いられる。なお、図14a、図14bでは、説明の便宜上、左右一対の手袋のうちの一方が図示され(図14の例では、主に右手を想定)、他方を省略する。他方については、一方と同様の層構造を有するように構成されていればよい。
図16は手袋310の製造工程400を示す略図であり、図17は手袋310の製造方法を示すフローチャートである。図16の製造工程400の各種装置の配置は一例にすぎず、これに限定されない。なお、ここでは、手袋310の製造方法について説明するが、ユニバーサル手袋310a及びミトンの製造方法も同様である。
シートロール404aに巻かれた繊維材料シート304は、X方向に搬送され、一対のエンボスロール410aによりエンボス加工、すなわち、機械的柔軟化処理が行われる。シートロール404aに巻かれた繊維材料シート304の裏面(第2の繊維シート303との対向面)には、模様が予め印刷されており、模様が印刷された繊維材料シート304に対して、前記のエンボス加工が施される。
上記の如く複合繊維シート301aの内部に弾性部材305が配置され、これにより複合繊維シート301aには弾性力が付与されている。弾性部材305の弾性力の選択により複合繊維シート301aの表面積を1.5倍から5倍程度に大きくすることができる。例えば、図9におけるx方向で弾性部材305が収縮した状態で必要とされる寸法が100mmとすると、弾性部材305が伸長した状態で150mmから500mmの複合繊維シート301aを使用することになる。弾性部材305の復元力により、所定の長さに伸長した状態から最も収縮した状態に収縮する割合である収縮率(カタログ値や理論値)を3分の1とすると、複合繊維シート301aの伸長状態におけるx方向の寸法は、弾性部材305の収縮率の逆数を収縮した状態で必要とされる寸法100mmに乗じた300mmが必要である。しかしながら、実際に弾性部材305を介して第1の繊維シート302、第2の繊維シート303、繊維材料シート304を接合した後に裁断したり、搬送ロールの搬送速度を減速したりして伸長状態を解除しても収縮率が2分の1となる場合がある。これは、例えば、製造工場の温度や湿度の問題、特に温度管理がされていなくて気温が低い場合や、弾性部材305単体の問題(例えば、弾性部材5の残留歪)、弾性部材305に塗布される接着剤307の硬化による弾性部材305の収縮の低下及び繊維材料シート304の剛性等が起因している。更に、接着剤307の塗布条件(塗布温度、塗布量、粘性など)も影響しているものと考えられる。
シートロール404bに巻かれた繊維材料シート304は、X方向の正側(右方向)に搬送され、一対のエンボスロール410bによりエンボス加工、すなわち、機械的柔軟化処理が施される。シートロール404bに巻かれた繊維材料シート304には、予め印刷を施しておいてもよい。エンボスロール410bを通過した繊維材料シート304には、第2の繊維シート303との接合のため、接着剤塗布装置411により接着剤307が塗布される。
複合繊維シート301aと、複合繊維シート301bとは押圧ロール413eにより押圧され、複合繊維シート301aの上に複合繊維シート301bを載せた状態となる。この状態では、複合繊維シート301aと複合繊維シート301bとは接合されていない。接合装置415は、ヒートシールや超音波接合等により、複合繊維シート301aと複合繊維シート301bとを接合する。本実施形態においては、手袋310(310a)の外形に合わせた接合が行われる。接合装置415による接合は、後述の裁断工程での裁断誤差を加味してのりしろを含んだ接合となる。接合装置415として接着剤を用いた接合を行ってもよく、或いは縫製による接合を行ってもよい。尚、本実施形態では、複合繊維シート301aが弾性部材305を備える場合について説明したが、必ずしも弾性部材305を設けなくてもよい。すなわち、複合繊維シート301aに代えて、複合繊維シート301bを用いてもよい。
手袋310の外形に合わせて接合された、複合繊維シート301aと複合繊維シート301bとは、カッターを有した裁断装置416により裁断され、これにより、手袋310が製造される。本実施形態においては、複合繊維シート301aと複合繊維シート301bとの接合後に裁断を行ったが、この順番を入れ替えてもよい。または、ヒートシールによる複合繊維シート301aと複合繊維シート301bとの接合時にヒートシールの熱を利用して裁断するようにしてもいい。さらには、超音波接合とカッターとを組み合わせたシールカッタを用いて複合繊維シート301aと複合繊維シート301bとの接合、裁断を行うようにしてもよい。これによれば、複合繊維シート301aと複合繊維シート301bとの接合と裁断とを同時にできるので、手袋310の製造効率を上げることができる。
次に使い捨て繊維製品としてのレインコートについて説明する。尚、本実施形態において、上述の第2、第3実施形態と同じ構成については同じ符号を付けてその説明を省略する。図18は、複合繊維シート301cと、複合繊維シート301dを接合してレインコート311を形成した例を示す図である。複合繊維シート301cは、第2実施形態の複合繊維シートが適宜用いられてもよい。図18、図19の例に示す複合繊維シート301cは、着用者の肌面から第1の繊維シート302、弾性部材305、繊維材料シート304、透湿性部材である透湿性フィルム320の順で積層されてなる複合繊維シートにより形成される。複合繊維シート301cは、この例に限定されず第1実施形態の複合繊維シートが適宜用いられてもよい。
次に使い捨て繊維製品としてのパンツについて説明する。使い捨て繊維製品としてのパンツについては、図3に示す実施形態があるが、更に図20に別の実施形態におけるパンツを示す。尚、本実施形態において、上述の実施形態と同じ構成については同じ符号を付けてその説明を省略する。図20は、手袋310と同じように、複合繊維シート301aと、複合繊維シート301bを使い捨てパンツ312として用いた例を示す図である。使い捨てパンツ312は、複合繊維シート301bが前側と後側とを構成し、複合繊維シート301aが前側の複合繊維シート301bと後側の複合繊維シート301bとを接合している。また、胴部装着部313は、複合繊維シート301bによって構成されている。
第6実施形態では、使い捨て繊維製品としてのシーツについて説明する。使い捨て繊維製品としてのシーツは、第1実施形態の複合繊維シート及び/又は第2実施形態の複合繊維シートを生地として利用し、そうした生地を適宜寸法に裁断したものを利用することができるが、生地の寸法をより安定させることができる点では、第1実施形態の複合繊維シートを利用することが好適である。厚みと弾力あるシーツを形成することができる点では、第2実施形態の複合繊維シートを利用することが好適である。
実施例1の複合繊維シートは、第1の繊維シート、繊維材料シート、透湿性フィルム、第2の繊維シートの順に積層された構成となっている。実施例1においては、第1の繊維シートとして親水性のスパンボンド不織布(目付量15g/m2)を用い、繊維材料シートとして、パルプ100%の紙(ティッシュペーパ用の紙シート:目付量13g/m2)をそのまま印刷せずに用いた。透湿性フィルムとして乳白フィルム(目付量18g/m2)を用い、第2の繊維シートとして、撥水性のスパンボンド不織布(目付量15g/m2)を用いた。これらの各シートをホットメルト接着剤(ホットメルト接着剤の総目付量1.2g/m2)により接着して得た総目付量62.2g/m2の積層シートを実施例1の複合繊維シートとした。
実施例1と同様の層構成において繊維材料シート(紙)に印刷を施した積層シートを実施例2の複合繊維シートとした。
実施例3の複合繊維シートも、実施例1と同様の層構成となっている。実施例3においては、第1の繊維シートとして撥水性のスパンボンド不織布(目付量15g/m2)を用い、繊維材料シートとして、パルプ100%の紙(ティッシュペーパ用の紙シート:目付量13g/m2)を印刷せずに用いた。透湿性フィルムとして乳白フィルム(目付量18g/m2)を用い、第2の繊維シートとして、撥水性のスパンボンド不織布(目付量40g/m2)を用いた。これらをホットメルト接着剤(ホットメルト接着剤の総目付量1.2g/m2)により接着して得た総目付量87.2g/m2の積層シートを実施例3とした。
実施例4の複合繊維シートは、第1の繊維シート、繊維材料シートが積層された構成となっている。実施例4においては、第1の繊維シートとして撥水性のスパンボンド不織布(目付量15g/m2)を用い、繊維材料シートとして、パルプ100%の紙(ティッシュペーパ用の紙シート:目付量13g/m2)を印刷せずに用いた。これらをホットメルト接着剤(ホットメルト接着剤の総目付量1.2g/m2)により接着して得た総目付量29.2g/m2の積層シートを実施例4の複合繊維シートとした。
比較例1の複合繊維シートは、第1の繊維シート、透湿性フィルム、繊維材料シート、第2の繊維シートの順に積層された構成となっている。比較例1においては、第1の繊維シートとして撥水性のスパンボンド不織布(目付量15g/m2)を用い、透湿フィルムとして乳白フィルム(目付量18g/m2)を用いた。また、繊維材料シートとして、パルプ100%の紙(ティッシュペーパ用の紙シート:目付量13g/m2)を印刷せずに用い、第2の繊維シートとして、親水性のスパンボンド不織布(目付量15g/m2)を用いた。これらをホットメルト接着剤(ホットメルト接着剤の総目付量1.2g/m2)により接着して得た総目付量62.2g/m2の積層シートを比較例1とした。
2、302 第1の繊維シート
3、303 第2の繊維シート
4、304 繊維材料シート
8、308 非接合領域
9、309 空間部
15、315 積層シート
30、330 接合領域
Claims (16)
- 通気性を有する繊維シートと、液拡散性を有する繊維材料シートとを積層してなる積層シートからなり、前記繊維シートと前記繊維材料シートとは相互に接触しており、この相互接触面において、前記繊維シートと前記繊維材料シートとが接合されている接合領域とそれらが接合されていない非接合領域とが形成され、前記非接合領域は空間部を有し、前記空間部と前記繊維シートの繊維空隙と前記繊維材料シートの繊維空隙とが相互に連通した水分蒸散通路が形成されていることを特徴とする複合繊維シート。
- 前記繊維材料シートにおける前記繊維シート接合面とは反対の面に、透湿性フィルムが積層され、前記繊維材料シートと前記透湿性フィルムとの相互接触面において、前記繊維材料シートと前記透湿性フィルムとが接合されている接合領域とそれらが接合されていない非接合領域とが形成され、前記非接合領域は空間部を有している請求項1に記載の複合繊維シート。
- 前記繊維シートは第1の繊維シートと第2の繊維シートとからなり、前記第1の繊維シートと前記第2の繊維シートとの間に前記繊維材料シートが設けられ、前記第1の繊維シートと前記繊維材料シートとの相互接触面及び前記繊維材料シートと前記第2の繊維シートとの相互接触面にそれぞれ、前記接合領域と、前記空間部を有する非接合領域とが形成されており、前記各非接合領域における前記空間部と、前記第1の繊維シートの繊維空隙と、前記第2の繊維シートの繊維空隙と、前記繊維材料シートの繊維空隙とが相互に連通した水分蒸散通路が形成されていることを特徴とする請求項1に記載の複合繊維シート。
- 前記第2の繊維シートにおける繊維材料シート接合面とは反対の面に、透湿性フィルムが積層され、前記第2の繊維シートと前記透湿性フィルムとの相互接触面において、前記第2の繊維シートと前記透湿性フィルムとが接合されている接合領域とそれらが接合されていない非接合領域とが形成され、前記非接合領域は空間部を有している請求項3に記載の複合繊維シート。
- 前記積層シートは吸水速乾性を有する請求項1~4のいずれかに記載の複合繊維シート。
- 前記積層シートの吸水速乾性は、ボーケン品質評価試験である蒸散性(ii)試験において、試験開始後20分の蒸散率が40%以上である評価値を有する請求項5に記載の複合繊維シート。
- 前記積層シートの吸水速乾性は、ボーケン品質評価試験である蒸散性(ii)試験において、試験開始後20分の蒸散率が40%以上であり、且つISO17617の蒸散性(ii)試験において、乾燥速度が2.0以上であり、乾燥時間が50分以下である評価値を有する請求項5又は6に記載の複合繊維シート。
- 前記第1の繊維シートと前記繊維材料シートとの間に弾性部材を有し、前記弾性部材により前記積層シートに伸縮性が付与されてなる請求項3~7のいずれかに記載の複合繊維シート。
- 前記繊維材料シートに印刷を施してなる請求項1~8のいずれかに記載の複合繊維シート。
- 前記繊維シートと、前記繊維材料シートとの接合面積が50%~90%である請求項1~9のいずれかに記載の複合繊維シート。
- 前記繊維シートは不織布材料からなる請求項1~10のいずれかに記載の複合繊維シート。
- 前記繊維材料シートは、紙材料からなる請求項1~11のいずれかに記載の複合繊維シート。
- 前記請求項1~12のいずれか1項に記載の複合繊維シートを用いて形成してなる使い捨て繊維製品。
- 請求項13に記載の使い捨て繊維製品が手袋であり、前記手袋は、前記第1の繊維シートと、前記繊維材料シートと、前記弾性部材と、前記第2の繊維シートを積層してなる手袋用第1複合繊維シートと、前記第1の繊維シートと、前記繊維材料シートと、前記第2の繊維シートを積層してなる手袋用第2複合繊維シートとを接合してなる手袋。
- 請求項13に記載の使い捨て繊維製品がレインコートであり、前記レインコートは、前記第1の繊維シートと、前記弾性部材と、前記繊維材料シートと、前記透湿性フィルムを積層してなるレインコート用第1複合繊維シートと、前記第1の繊維シートと、前記繊維材料シートと、前記透湿性フィルムを積層してなるレインコート用第2複合繊維シートとを接合してなるレインコート。
- 通気性を有する繊維シートと、液拡散性を有する繊維材料シートをそれぞれ供給し、これらのシートを接合手段により部分的に接合して積層シートを形成することにより第1複合繊維シートを製造する工程と、前記と同様の工程で第2複合繊維シートを製造する工程と、前記第1複合繊維シートと前記第2複合繊維シートを接合する工程と、接合と同時に或いは接合後に所定形状に裁断する工程を含むことを特徴とする使い捨て繊維製品の製造方法。
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US16/094,090 US20190110529A1 (en) | 2016-04-25 | 2017-04-21 | Composite textile sheet, disposable textile product using composite textile sheet, glove, raincoat, and method for manufacturing disposable textile product |
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CN107548355A (zh) | 2018-01-05 |
GB2564067A (en) | 2019-01-02 |
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