TW201300602A - Manufacturing method for nonwoven fabric - Google Patents
Manufacturing method for nonwoven fabric Download PDFInfo
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- TW201300602A TW201300602A TW101110137A TW101110137A TW201300602A TW 201300602 A TW201300602 A TW 201300602A TW 101110137 A TW101110137 A TW 101110137A TW 101110137 A TW101110137 A TW 101110137A TW 201300602 A TW201300602 A TW 201300602A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/003—Indicating or regulating the moisture content of the layer
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/002—Tissue paper; Absorbent paper
Abstract
Description
本發明有關於由含有水分之纖維薄片來製造不織布的不織布之製造方法。 The present invention relates to a method for producing a nonwoven fabric in which a nonwoven fabric is produced from a fiber sheet containing moisture.
就以往技術而言已知有：將添加紙力濕強劑之纖維懸浮液從抄紙原料供給頭供給至紙層形成帶上，使纖維堆積在紙層形成帶上，形成潮濕狀態之纖維薄片，使用吸引盒將纖維薄片脫水後，從蒸氣噴附噴嘴將水蒸氣噴附在纖維薄片，對纖維薄片賦予既定圖案的絨毛紙之製造方法(例如專利文獻1)。藉由此絨毛紙之製造方法，能夠製造厚度大、吸收性高、柔軟性佳、並且具有適當堅固性的絨毛紙。 It is known in the prior art that a fiber suspension containing a paper strength wet strength agent is supplied from a papermaking raw material supply head to a paper layer forming belt, and fibers are deposited on the paper layer forming belt to form a fibrous sheet in a wet state. After the fiber sheet is dehydrated by the suction box, water vapor is sprayed onto the fiber sheet from the vapor deposition nozzle, and a method of producing a sheet of paper having a predetermined pattern on the fiber sheet is used (for example, Patent Document 1). By the method for producing the pile paper, it is possible to produce a pile paper having a large thickness, high absorbability, good flexibility, and appropriate sturdiness.
〔專利文獻1〕日本特開2000-34690號公報 [Patent Document 1] Japanese Patent Laid-Open Publication No. 2000-34690
然而，於專利文獻1所述之絨毛紙的製造方法，因為是將從抄紙原料頭排出之纖維懸浮液在紙層形成帶形成纖維薄片，並且在以吸引盒所進行之纖維薄片的濕度百分比調整後立即噴附蒸氣，所以有因蒸氣造成纖維薄片破裂之 虞。另外，使蒸氣強力噴附時會對紙層造成損傷而使纖維薄片的強度變差，在乾燥工程前進行搬運將有困難之情形。而且，在潮濕狀態使用時，因為纖維薄片強度大幅降低下，所以必須對抄紙原料添加接著劑或紙力增強劑等，使抄紙原料成本變高。另外，為了防止纖維薄片被蒸氣噴散，只能夠透過紙層搬運輸送帶之網讓纖維薄片接觸蒸氣，在網上蒸氣力道被減弱，所以必須以強力蒸氣接觸於纖維薄片因此效率不佳。另外，在蒸氣賦予步驟因為是透過輸送帶網(conveyer net)接觸，所以必須在網目網(pattern net)之外另外再設1台輸送帶網，而使製造裝置的成本變高。而且，因為在乾燥步驟前設置蒸氣賦予步驟將纖維薄片的體積變大，所以藉由蒸氣賦予步驟產生體積後通過加壓步驟等之使纖維薄片體積被壓扁的步驟，在捲取前會有無法維持纖維薄片體積的情況。另外，因為在乾燥步驟前設置蒸氣賦予步驟將纖維薄片的體積變大，在紙層濕度百分比高的狀態進行蒸氣賦予，所以蒸氣能量被消耗在賦型，使得藉由蒸氣來提高纖維薄片之乾燥效率的效果不高。 However, the method for producing the pile paper described in Patent Document 1 is because the fiber suspension discharged from the papermaking raw material head forms a fiber sheet in the paper layer forming belt, and the humidity percentage of the fiber sheet is adjusted by the suction box. The vapor is sprayed immediately afterwards, so the fiber flakes are broken due to the vapor. Hey. Further, when the steam is strongly sprayed, the paper layer is damaged and the strength of the fiber sheet is deteriorated, and it is difficult to carry it before the drying process. Further, when it is used in a wet state, since the strength of the fiber sheet is greatly lowered, it is necessary to add an adhesive or a paper strength enhancer to the papermaking raw material to increase the cost of the papermaking raw material. Further, in order to prevent the fiber sheet from being sprayed by the vapor, the fiber sheet can be brought into contact with the vapor through the web of the paper layer conveyance belt, and the vapor force is weakened on the web. Therefore, it is necessary to contact the fiber sheet with strong steam, which is inefficient. Further, since the steam imparting step is in contact with the conveyor net, it is necessary to additionally provide one conveyor belt net in addition to the pattern net, and the cost of the manufacturing apparatus is increased. Further, since the volume of the fiber sheet is increased by providing the vapor imparting step before the drying step, the step of generating the volume by the vapor imparting step and then crushing the volume of the fiber sheet by the pressurizing step or the like is performed before the winding. The condition of the fiber flake volume cannot be maintained. Further, since the vapor imparting step is provided before the drying step to increase the volume of the fiber sheet, and the vapor imparting is performed in a state where the percentage of the paper layer is high, the vapor energy is consumed in the forming, so that the drying of the fiber sheet is improved by the vapor. The effect of efficiency is not high.
本發明之目的係用以解決上述的以往課題，提供強度高、膨鬆、並且具有柔軟性之不織布。 The object of the present invention is to solve the above-mentioned conventional problems and to provide a non-woven fabric having high strength, bulkiness, and flexibility.
本發明為了解決上述課題採用以下構成。 In order to solve the above problems, the present invention adopts the following configuration.
換言之，本發明之不織布之製造方法係具有：將含有 水分之抄紙原料供給於支撐體上，在支撐體上形成紙層的步驟；使用蒸氣噴嘴，對紙層噴射高壓水蒸氣的步驟，對紙層噴射高壓水蒸氣的步驟，係在紙層的濕度百分比成為10~45%之後對紙層噴射高壓水蒸氣。 In other words, the manufacturing method of the non-woven fabric of the present invention has: a step of supplying a papermaking material of moisture to a support, forming a paper layer on the support; a step of spraying high-pressure water vapor on the paper layer using a steam nozzle, a step of spraying high-pressure water vapor on the paper layer, and a humidity of the paper layer After the percentage becomes 10 to 45%, high pressure water vapor is sprayed onto the paper layer.
藉由本發明，可製得強度高、膨鬆、並且具有柔軟性之不織布。 According to the present invention, a non-woven fabric having high strength, bulkiness, and flexibility can be obtained.
以下、參照圖式對本發明之一實施形態的不織布之製造方法做更詳細說明。第1圖係用以說明使用於本發明之一實施形態的不織布之製造方法的不織布製造裝置1。 Hereinafter, a method of manufacturing a nonwoven fabric according to an embodiment of the present invention will be described in more detail with reference to the drawings. Fig. 1 is a view showing a nonwoven fabric manufacturing apparatus 1 for use in a method of manufacturing a nonwoven fabric according to an embodiment of the present invention.
首先，製作纖維懸浮液等之含有水分的抄紙原料。使用於抄紙原料之纖維，較佳為纖維長度10mm以下之短纖維。如此般之短纖維例如可舉針葉樹或闊葉樹之化學紙漿、半化學紙漿及機械紙漿等之木材紙漿、將此等木材紙漿進行化學處理之絲光化紙漿及交聯紙漿、麻或綿等之非木材系纖維以及如嫘縈纖維等之再生纖維般之纖維素纖維、以及如聚乙烯纖維、聚丙烯纖維、聚酯纖維及聚醯胺纖維般之合成纖維等為例。使用於抄紙原料之纖維特以木材紙漿、非木材紙漿、嫘縈纖維等之纖維素纖維為佳。 First, a papermaking raw material containing water such as a fiber suspension is prepared. The fiber used for the papermaking raw material is preferably a short fiber having a fiber length of 10 mm or less. Such short fibers may, for example, be wood pulp of chemical pulp of conifer or hardwood, semi-chemical pulp and mechanical pulp, mercerized pulp chemically treated with such wood pulp, and non-wood such as crosslinked pulp, hemp or cotton. Examples are fiber-like fibers such as regenerated fibers such as rayon fibers, and synthetic fibers such as polyethylene fibers, polypropylene fibers, polyester fibers, and polyamide fibers. The fibers used for the papermaking raw materials are preferably cellulose fibers such as wood pulp, non-wood pulp, and rayon fibers.
抄紙原料係藉由原料供給頭11供給至紙層形成輸送 帶16之紙層形成帶上，且堆積於紙層形成帶上。紙層形成帶較佳為蒸氣可通過之具有透氣性之支撐體。例如，可以將金屬網、毛布等使用於紙層形成帶。 The papermaking raw material is supplied to the paper layer by the raw material supply head 11 to form and transport The paper layer of tape 16 is formed on the tape and deposited on the paper layer forming tape. The paper layer forming belt is preferably a gas permeable support through which the vapor can pass. For example, a metal mesh, a felt, or the like can be used for the paper layer forming tape.
堆積於紙層形成帶上之抄紙原料藉由吸引盒15加以適當脫水，形成紙層23。紙層23係通過：在紙層形成帶上所配置之2台高壓水流噴嘴12；以及配置在隔著紙層形成帶與高壓水流噴嘴12對向的位置，將從高壓水流噴嘴12所噴射的水加以回收之2台吸引盒15之間。此時，紙層23被高壓水流噴嘴12噴射高壓水流，在上面(高壓水流噴嘴12側之面)形成有溝部。 The papermaking material deposited on the paper layer forming belt is appropriately dehydrated by the suction box 15 to form the paper layer 23. The paper layer 23 passes through two high-pressure water flow nozzles 12 disposed on the paper layer forming belt, and is disposed at a position opposed to the high-pressure water flow nozzle 12 via the paper layer forming belt, and is ejected from the high-pressure water flow nozzle 12. The water is recycled between the two suction boxes 15 . At this time, the paper layer 23 is sprayed with the high-pressure water flow by the high-pressure water flow nozzle 12, and a groove portion is formed on the upper surface (the surface on the high-pressure water flow nozzle 12 side).
將高壓水流噴嘴12之一例示於第2圖。高壓水流噴嘴12將在紙層23之寬度方向(CD)排列之複數高壓水流31朝向紙層23噴射。其結果，在紙層23上面形成有往紙層23之寬度方向，以及機械方向(MD)伸延的複數溝部32。 One of the high pressure water jet nozzles 12 is exemplified in Fig. 2. The high-pressure water jet nozzle 12 ejects a plurality of high-pressure water streams 31 arranged in the width direction (CD) of the paper layer 23 toward the paper layer 23. As a result, a plurality of groove portions 32 extending in the width direction of the paper layer 23 and extending in the machine direction (MD) are formed on the upper surface of the paper layer 23.
另外，紙層23受到高壓水流時，如上述般在紙層23形成有溝部32並且紙層23之纖維彼此交絡，使紙層23之強度變高。紙層23受到高壓水流時，紙層23之纖維彼此交絡之原理，參照第3圖進行說明，但本發明並非限定於此原理。 Further, when the paper layer 23 is subjected to the high-pressure water flow, the groove portion 32 is formed in the paper layer 23 as described above, and the fibers of the paper layer 23 are entangled with each other, so that the strength of the paper layer 23 is increased. The principle in which the fibers of the paper layer 23 are intertwined when the paper layer 23 is subjected to a high-pressure water flow will be described with reference to Fig. 3, but the present invention is not limited to this principle.
如第3圖所示般高壓水流噴嘴12噴射高壓水流31時，高壓水流31通過紙層形成帶41。藉此紙層23之纖維成為：被高壓水流31將通過紙層形成帶41之部分42拉往中心。其結果，紙層23之纖維朝向高壓水流31通過紙層 形成帶41之部分42聚集，使纖維彼此交絡。 When the high pressure water flow nozzle 12 injects the high pressure water flow 31 as shown in Fig. 3, the high pressure water flow 31 passes through the paper layer forming belt 41. The fibers of the paper layer 23 are thereby brought to the center by the portion 42 of the paper layer forming belt 41 by the high pressure water stream 31. As a result, the fibers of the paper layer 23 pass through the paper layer toward the high pressure water stream 31. The portions 42 forming the belt 41 are gathered to entangle the fibers with each other.
藉由紙層23之纖維彼此交絡使紙層23之強度變高，藉此在之後步驟，即使高壓水蒸氣被噴射在紙層23時發生穿孔、破裂、以及被噴散的情況也會減少。另外，抄紙原料即使不添加紙力增強劑也能夠增加紙層23之濕強度。 The fibers 23 are entangled with each other to increase the strength of the paper layer 23, whereby in the subsequent step, even if high-pressure water vapor is sprayed on the paper layer 23, the occurrence of perforation, cracking, and scattering is reduced. Further, the papermaking raw material can increase the wet strength of the paper layer 23 without adding a paper strength enhancer.
高壓水流噴嘴12之孔徑較佳為90~150μm。高壓水流噴嘴12之孔徑小於90μm時，會有噴嘴容易堵塞的問題產生之情形。另外，高壓水流噴嘴12之孔徑大於150μm時，會有處理效率變差的問題產生之情形。 The pore diameter of the high pressure water jet nozzle 12 is preferably from 90 to 150 μm. When the diameter of the high-pressure water jet nozzle 12 is less than 90 μm, there is a problem that the nozzle is easily clogged. Further, when the diameter of the high-pressure water jet nozzle 12 is larger than 150 μm, there is a problem that the processing efficiency is deteriorated.
高壓水流噴嘴12之孔間距(鄰接之孔的中心間之距離)較佳為0.5~1.0mm。高壓水流噴嘴12之孔間距小於0.5mm時，噴嘴之耐壓降低，而且有破損的問題產生之情形。另外，高壓水流噴嘴12之孔間距大於1.0mm時，會有纖維交絡不充分的問題產生之情形。 The pitch of the holes of the high-pressure water jet nozzle 12 (the distance between the centers of the adjacent holes) is preferably 0.5 to 1.0 mm. When the hole pitch of the high-pressure water jet nozzle 12 is less than 0.5 mm, the withstand pressure of the nozzle is lowered, and a problem of breakage occurs. Further, when the hole pitch of the high-pressure water jet nozzle 12 is larger than 1.0 mm, there is a problem that the fiber entanglement is insufficient.
通過2台高壓水流噴嘴12與2台吸引盒15間之後的位置(第1圖之符號24的位置)之紙層23的寬度方向剖面示於第4圖。藉由高壓水流在紙層23之上面形成有溝部32。 A cross section of the paper layer 23 at a position (the position of the symbol 24 in the first drawing) between the two high-pressure water jet nozzles 12 and the two suction boxes 15 is shown in Fig. 4 in the width direction. A groove portion 32 is formed on the upper surface of the paper layer 23 by a high-pressure water flow.
之後，如第1圖所示般，紙層23係藉由吸引拾取器17被轉印至紙層搬運輸送帶18。在此轉印時紙層23在厚度方向受到壓力，使紙層23的體積變小。而且，紙層23被轉印至紙層搬運輸送帶19。在此轉印時也使紙層23在厚度方向受到壓力，使紙層23的體積變小。接著，被轉 印至乾燥機20。在此轉印時也使紙層23在厚度方向受到壓力，使紙層23的體積變小。乾燥機20係例如楊克式烘缸，使紙層23附著在藉由蒸氣被加熱至約120℃之滾筒，而將紙層23乾燥。 Thereafter, as shown in Fig. 1, the paper layer 23 is transferred to the paper layer conveyance belt 18 by the suction pickup 17. At the time of this transfer, the paper layer 23 is pressed in the thickness direction to make the volume of the paper layer 23 small. Further, the paper layer 23 is transferred to the paper layer conveyance belt 19. At the time of this transfer, the paper layer 23 is also pressed in the thickness direction to make the volume of the paper layer 23 small. Then, was transferred Printed to the dryer 20. At the time of this transfer, the paper layer 23 is also pressed in the thickness direction to make the volume of the paper layer 23 small. The dryer 20 is, for example, a Yankee dryer, and the paper layer 23 is adhered to a drum heated to about 120 ° C by steam to dry the paper layer 23.
藉由此乾燥機20所進行之乾燥使紙層23的濕度百分比，較佳為10~45%，更佳為20~40%。在此，濕度百分比係指以紙層23的質量為100%時，紙層所含有的水量。紙層23的濕度百分比小於10%時，紙層23的纖維間之氫鍵強度變強，藉由後述之高壓水蒸氣來解開紙層23的纖維所須要的能量非常高。一方面，紙層23的濕度百分比大於45%時，藉由後述之高壓水蒸氣將紙層23乾燥為既定之濕度百分比以下所須要的能量變得非常高。 The moisture percentage of the paper layer 23 by the drying by the dryer 20 is preferably from 10 to 45%, more preferably from 20 to 40%. Here, the humidity percentage means the amount of water contained in the paper layer when the mass of the paper layer 23 is 100%. When the moisture percentage of the paper layer 23 is less than 10%, the hydrogen bond strength between the fibers of the paper layer 23 becomes strong, and the energy required to unwind the fibers of the paper layer 23 by the high-pressure steam described later is extremely high. On the other hand, when the moisture percentage of the paper layer 23 is more than 45%, the energy required to dry the paper layer 23 to a predetermined humidity percentage or less by the high-pressure steam described later becomes very high.
接著，紙層23移動至圓筒狀吸引滾筒13的網目狀外周面上。此時，從配置在吸引滾筒13之外周面上方的1台蒸氣噴嘴14使高壓水蒸氣被噴射在紙層23。吸引滾筒13係內建吸引裝置，從蒸氣噴嘴14所噴射的水蒸氣藉由吸引裝置進行吸引。藉由從蒸氣噴嘴14所噴射的高壓水蒸氣，在紙層23的上面(蒸氣噴嘴14側之面)形成溝部。 Next, the paper layer 23 is moved to the mesh-like outer peripheral surface of the cylindrical suction drum 13. At this time, high-pressure steam is sprayed on the paper layer 23 from one steam nozzle 14 disposed above the outer peripheral surface of the suction drum 13 . The suction drum 13 is internally provided with a suction device, and the water vapor sprayed from the steam nozzle 14 is sucked by the suction device. The groove portion is formed on the upper surface of the paper layer 23 (the surface on the side of the vapor nozzle 14) by the high-pressure steam sprayed from the steam nozzle 14.
從蒸氣噴嘴14所噴射的高壓水蒸氣，可以由100%的水所構成之水蒸氣，也可以是含有空氣等之其他氣體的水蒸氣。但是，從蒸氣噴嘴14所噴射的高壓水蒸氣，較佳為100%的水所構成之水蒸氣。 The high-pressure steam injected from the steam nozzle 14 may be water vapor composed of 100% water or steam containing other gases such as air. However, the high-pressure steam injected from the steam nozzle 14 is preferably water vapor composed of 100% water.
將配置在吸引滾筒13上方的蒸氣噴嘴14之一例，示 於第5圖。蒸氣噴嘴14係將在紙層23之寬度方向(CD)排列之複數高壓水蒸氣51朝向紙層23噴射。其結果，在紙層23上面形成有往紙層23之寬度方向，以及機械方向(MD)伸延的複數溝部52。紙層23雖然存在藉由高壓水流所形成之溝部，但為了容易看見藉由高壓水蒸氣51所形成之溝部，於第5圖省略藉由高壓水流所形成之溝部。 An example of a steam nozzle 14 disposed above the suction drum 13 is shown In Figure 5. The steam nozzle 14 sprays a plurality of high-pressure water vapors 51 arranged in the width direction (CD) of the paper layer 23 toward the paper layer 23. As a result, a plurality of groove portions 52 extending in the width direction of the paper layer 23 and extending in the machine direction (MD) are formed on the upper surface of the paper layer 23. Although the paper layer 23 has a groove formed by a high-pressure water flow, the groove formed by the high-pressure water flow is omitted in Fig. 5 in order to facilitate the observation of the groove formed by the high-pressure steam 51.
紙層23被噴射高壓水蒸氣時，紙層23之纖維被解開，然後紙層23之體積變大。藉此，因轉印時之壓力及高壓水流而變硬之紙層23，柔軟性提高，紙層23之觸感獲得改善。紙層23受到高壓水蒸氣時，紙層23之纖維被解開，紙層23之體積變高的原理，參照第6圖進行說明，但本發明並非限定於此原理。 When the paper layer 23 is sprayed with high-pressure water vapor, the fibers of the paper layer 23 are unwound, and then the volume of the paper layer 23 becomes large. Thereby, the paper layer 23 which is hardened by the pressure at the time of transfer and the high-pressure water flow improves the flexibility, and the touch of the paper layer 23 is improved. When the paper layer 23 is subjected to high-pressure steam, the fiber of the paper layer 23 is unwound, and the principle of increasing the volume of the paper layer 23 will be described with reference to Fig. 6, but the present invention is not limited to this principle.
如第6圖所示般蒸氣噴嘴14噴射高壓水蒸氣51時，高壓水蒸氣51係接觸於吸引滾筒13。高壓水蒸氣51，大部分被彈回吸引滾筒13。藉此紙層23之纖維捲起，然後被解開。另外，藉由高壓水蒸氣51使紙層23之纖維被撥開，而且被撥開之纖維，往高壓水蒸氣51接觸於吸引滾筒13的部分53之寬度方向側移動聚集，使紙層23之體積變高。 When the steam nozzle 14 sprays the high-pressure steam 51 as shown in Fig. 6, the high-pressure steam 51 comes into contact with the suction drum 13. Most of the high pressure water vapor 51 is bounced back to the suction drum 13. Thereby the fibers of the paper layer 23 are rolled up and then unwound. Further, the fibers of the paper layer 23 are separated by the high-pressure water vapor 51, and the fibers that have been removed are moved toward the width direction side of the portion 53 where the high-pressure water vapor 51 contacts the suction drum 13, so that the paper layer 23 is The volume becomes higher.
由於藉由高壓水流使紙層23之強度提高，因此噴射高壓水蒸氣51在紙層23時，不須在紙層23上設置用於防止紙層23被高壓水蒸氣51噴散的網。所以，以高壓水蒸氣51對紙層23之處理效率提升。另外，由於不須設置上述網，因此能夠抑制不織布製造裝置1之維修以及不織 布之製造成本。 Since the strength of the paper layer 23 is increased by the high-pressure water flow, when the high-pressure water vapor 51 is sprayed on the paper layer 23, it is not necessary to provide a net for preventing the paper layer 23 from being sprayed by the high-pressure steam 51 on the paper layer 23. Therefore, the processing efficiency of the paper layer 23 by the high pressure water vapor 51 is improved. In addition, since it is not necessary to provide the above-described net, it is possible to suppress the maintenance and non-woven of the non-woven fabric manufacturing apparatus 1. The manufacturing cost of cloth.
第7圖係用以說明噴射高壓水蒸氣前之紙層與噴射後之紙層間的紙層厚度變化。第7圖(a)係噴射高壓水蒸氣前之紙層的剖面照片，第7圖(b)係噴射高壓水蒸氣後之紙層的剖面照片。噴射高壓水蒸氣前之紙層厚度為0.30mm，噴射高壓水蒸氣後紙層之厚度變厚為0.57mm。藉此，可知紙層被噴射高壓水蒸氣時體積增大，紙層之纖維被解開。 Figure 7 is a diagram for explaining the change in the thickness of the paper layer between the paper layer before the high-pressure water jet is sprayed and the paper layer after the jetting. Fig. 7(a) is a photograph of a cross section of a paper layer before high-pressure steam is sprayed, and Fig. 7(b) is a photograph of a cross section of a paper layer after high-pressure steam is sprayed. The thickness of the paper layer before the high-pressure water vapor was sprayed was 0.30 mm, and the thickness of the paper layer was increased to 0.57 mm after the high-pressure steam was sprayed. Thereby, it is understood that the volume of the paper layer is increased when the high-pressure water vapor is sprayed, and the fibers of the paper layer are unwound.
從蒸氣噴嘴14噴射之高壓水蒸氣的蒸氣壓力較佳為0.3~1.5MPa。高壓水蒸氣之蒸氣壓力小於0.3MPa時，會有紙層23之體積無法藉由高壓水蒸氣變得太大之情形。另外，高壓水蒸氣之蒸氣壓力大於1.5MPa時，會有紙層23穿孔、紙層23破裂、以及被噴散之情形。 The vapor pressure of the high-pressure steam injected from the vapor nozzle 14 is preferably from 0.3 to 1.5 MPa. When the vapor pressure of the high-pressure steam is less than 0.3 MPa, there is a case where the volume of the paper layer 23 cannot be made too large by the high-pressure steam. Further, when the vapor pressure of the high-pressure steam is more than 1.5 MPa, the paper layer 23 is perforated, the paper layer 23 is broken, and the film is sprayed.
藉由將從蒸氣噴嘴14噴射之蒸氣加以吸引的吸引滾筒13所內建之吸引裝置，吸引滾筒13用以吸引紙層23之吸引力較佳為-1~-12kPa。吸引滾筒13之吸引力小於-1kPa時會有無法吸光蒸氣導致發生吹起危險的問題產生之情形。另外，吸引滾筒13之吸引力大於-12kPa時有往吸引內之纖維脫落變多的問題產生之情形。 The suction device built in the suction drum 13 that sucks the vapor ejected from the steam nozzle 14 has a suction force for attracting the paper layer 23 to be preferably -1 to -12 kPa. When the suction force of the suction drum 13 is less than -1 kPa, there is a problem that a problem that the light is not absorbed by the vapor may cause a blowing hazard. Further, when the suction force of the suction drum 13 is larger than -12 kPa, there is a problem that the fiber falling into the suction becomes large.
蒸氣噴嘴14的前端與紙層23的上面之間的距離較佳為1.0~10mm。蒸氣噴嘴14的前端與紙層23的上面之間的距離小於1.0mm時，會有紙層23穿孔，或紙層23破裂、被噴散的問題產生之情形。另外，蒸氣噴嘴14的前端與紙層23的上面之間的距離大於10mm時，高壓水蒸氣 用於在紙層23表面形成溝部的力道被分散，在紙層23表面形成溝部之能量效率變差。 The distance between the front end of the vapor nozzle 14 and the upper surface of the paper layer 23 is preferably 1.0 to 10 mm. When the distance between the tip end of the vapor nozzle 14 and the upper surface of the paper layer 23 is less than 1.0 mm, there is a problem that the paper layer 23 is perforated or the paper layer 23 is broken and scattered. In addition, when the distance between the front end of the vapor nozzle 14 and the upper surface of the paper layer 23 is greater than 10 mm, high-pressure water vapor The force for forming the groove on the surface of the paper layer 23 is dispersed, and the energy efficiency of forming the groove on the surface of the paper layer 23 is deteriorated.
蒸氣噴嘴14之孔徑，較佳為比高壓水流噴嘴12之孔徑更大，而且蒸氣噴嘴14之孔間距，較佳為比高壓水流噴嘴12之孔間距更大。藉此，能夠如第8圖所示般，一邊留下藉由從高壓水流噴嘴12所噴射之高壓水流所形成之溝部32，一邊藉由從蒸氣噴嘴14噴射之高壓水蒸氣，在紙層23形成溝部52。第8圖係表示噴射高壓水蒸氣後(第1圖之符號25的位置)之紙層23的寬度方向剖面。紙層23之中，存在複數藉由高壓水流所形成之溝部32的領域54係紙層23之強度較強的領域，藉由高壓水蒸氣形成有溝部53的部分55，係紙層23之強度藉由高壓水蒸氣而比起上述領域54稍微變弱的領域。如此般，在紙層23形成強度較強之領域54與強度較弱之領域55，藉此能夠取得紙層23的強度與膨鬆的平衡。另外，紙層23之體積變大能改善紙層23之保水性，並且紙層23之濕強度亦獲得改善。而且，能夠一邊抑制紙層23之強度降低，一邊藉由高壓水蒸氣在紙層23形成溝部。 The pore diameter of the vapor nozzle 14 is preferably larger than the pore diameter of the high pressure water flow nozzle 12, and the pore spacing of the vapor nozzle 14 is preferably larger than the pore spacing of the high pressure water flow nozzle 12. Thereby, as shown in FIG. 8, the groove portion 32 formed by the high-pressure water jet sprayed from the high-pressure water jet nozzle 12 can be left in the paper layer 23 by the high-pressure water vapor sprayed from the steam nozzle 14. The groove portion 52 is formed. Fig. 8 is a cross-sectional view in the width direction of the paper layer 23 after the high-pressure water vapor is sprayed (the position of the symbol 25 in Fig. 1). Among the paper layers 23, there is a field in which the strength of the field 54-series paper layer 23 of the groove portion 32 formed by the high-pressure water flow is strong, and the portion 55 of the groove portion 53 is formed by the high-pressure water vapor, and the strength of the paper-making layer 23 is formed. It is a field that is slightly weaker than the above-mentioned field 54 by high-pressure water vapor. In this manner, in the paper layer 23, the field 54 having strong strength and the field 55 having weak strength are formed, whereby the balance between the strength and the bulk of the paper layer 23 can be obtained. Further, the volume of the paper layer 23 becomes large to improve the water retention of the paper layer 23, and the wet strength of the paper layer 23 is also improved. Further, it is possible to form the groove portion in the paper layer 23 by the high-pressure steam while suppressing the decrease in the strength of the paper layer 23.
蒸氣噴嘴14之孔徑較佳為150~500μm。蒸氣噴嘴14之孔徑小於150μm時，有能量不足，且無法充分撥開纖維的問題產生之情形。另外，蒸氣噴嘴14之孔徑大於500μm時，會有能量太大且基材過度損傷的問題產生之情形。 The pore size of the vapor nozzle 14 is preferably from 150 to 500 μm. When the pore diameter of the vapor nozzle 14 is less than 150 μm, there is a problem that the energy is insufficient and the fiber cannot be sufficiently removed. Further, when the pore diameter of the vapor nozzle 14 is larger than 500 μm, there is a problem that the energy is too large and the substrate is excessively damaged.
蒸氣噴嘴14之孔間距(鄰接之孔的中心間之距離) 較佳為2.0~5.0mm。蒸氣噴嘴14之孔間距小於2.0mm時，噴嘴之耐壓降低，而且有發生破損疑慮的問題產生之情形。另外，蒸氣噴嘴14之孔間距大於5.0mm時，會有因為處理不足使柔軟性改善效果降低的問題產生之情形。 Hole spacing of the vapor nozzles 14 (distance between the centers of adjacent holes) It is preferably 2.0 to 5.0 mm. When the hole pitch of the steam nozzle 14 is less than 2.0 mm, the withstand pressure of the nozzle is lowered, and there is a problem that a problem of occurrence of breakage occurs. Further, when the hole pitch of the steam nozzle 14 is larger than 5.0 mm, there is a problem that the effect of improving the flexibility is lowered due to insufficient processing.
為了盡量不使噴射高壓水蒸氣後之紙層23的濕度百分比，大於噴射高壓水蒸氣前之紙層23的濕度百分比，較佳為高壓水蒸氣的溫度高於乾燥機20的溫度。例如，高壓水蒸氣的溫度較佳為130~220℃。藉此，將高壓水蒸氣對紙層23進行噴射時紙層23的乾燥也跟著進行，紙層23在體積變高的同時跟著乾燥。由於紙層23乾燥時紙層23的纖維彼此之氫鍵變強，因而紙層23的強度變高，紙層23變高的體積不易壓扁。另外，藉由紙層23的強度變高，可防止因高壓水蒸氣的噴射而造成紙層23穿孔、斷裂。 In order to minimize the humidity percentage of the paper layer 23 after the high-pressure water vapor is sprayed, it is greater than the moisture percentage of the paper layer 23 before the high-pressure water vapor is sprayed, preferably the temperature of the high-pressure steam is higher than the temperature of the dryer 20. For example, the temperature of the high pressure water vapor is preferably from 130 to 220 °C. Thereby, the drying of the paper layer 23 is carried out when the high-pressure water vapor is sprayed on the paper layer 23, and the paper layer 23 is dried while being increased in volume. Since the hydrogen bonds of the fibers of the paper layer 23 become stronger when the paper layer 23 is dried, the strength of the paper layer 23 becomes high, and the volume at which the paper layer 23 becomes high is not easily crushed. Further, by increasing the strength of the paper layer 23, it is possible to prevent the paper layer 23 from being perforated or broken due to the ejection of the high-pressure water vapor.
噴射高壓水蒸氣後之紙層23的濕度百分比較佳為45%以下，更佳為40%以下。噴射高壓水蒸氣後之紙層23的濕度百分比大於45%時，會有藉由後述乾燥機所進行之乾燥無法使紙層23的濕度百分比為5%以下的情況。在此情況必須進一步追加乾燥，不織布的製造效率變差。 The moisture percentage of the paper layer 23 after the high-pressure water vapor is sprayed is preferably 45% or less, more preferably 40% or less. When the moisture percentage of the paper layer 23 after the high-pressure water vapor is sprayed is more than 45%, the moisture percentage of the paper layer 23 may not be 5% or less by drying by a dryer described later. In this case, it is necessary to further add drying, and the manufacturing efficiency of the nonwoven fabric is deteriorated.
藉由高壓水蒸氣在紙層23的上面形成有溝部，並且在紙層23的下面(紙層23之紙層形成帶41側的面)形成有與吸引滾筒13的外周面圖案對應的未圖示凹凸。 A groove portion is formed on the upper surface of the paper layer 23 by the high-pressure steam, and a lower surface corresponding to the outer peripheral surface pattern of the suction drum 13 is formed on the lower surface of the paper layer 23 (the surface on the paper layer forming belt 41 side of the paper layer 23). Show bumps.
之後，如第1圖所示般，被轉印至與乾燥機20不同的乾燥機22。乾燥機22例如為楊克式烘缸，將紙層23付 著在藉由蒸氣加熱至約150℃的滾筒，使紙層23乾燥。通過乾燥機22後之紙層23必須充分地加以乾燥，具體而言，通過乾燥機22後之紙層23的濕度百分比較佳為5%以下。 Thereafter, as shown in Fig. 1, the dryer 22 is transferred to a dryer 22 different from the dryer 20. The dryer 22 is, for example, a Yankee dryer, and the paper layer 23 is paid. The paper layer 23 is dried by a roller heated to about 150 ° C by steam. The paper layer 23 that has passed through the dryer 22 must be sufficiently dried. Specifically, the moisture percentage of the paper layer 23 after passing through the dryer 22 is preferably 5% or less.
乾燥後之紙層23作為不織布被捲取至捲取機21。 The dried paper layer 23 is taken up as a non-woven fabric to the winder 21.
在以上之一實施形態的不織布製造方法中使用的不織布製造裝置，能夠如後述般加以變形。此外，與上述之不織布製造裝置相同的構成要素則給予相同符號，以上述之不織布製造裝置不同部分為主進行說明。 The nonwoven fabric manufacturing apparatus used in the nonwoven fabric manufacturing method of one of the above embodiments can be modified as will be described later. In addition, the same components as those of the above-described nonwoven fabric manufacturing apparatus are denoted by the same reference numerals, and the different parts of the above-described nonwoven fabric manufacturing apparatus will be mainly described.
(不織布製造裝置之變形例1) (Modification 1 of non-woven fabric manufacturing apparatus)
於本發明之一實施形態的不織布製造裝置1，在吸引滾筒13上對紙層噴射高壓水蒸氣。但是，第9圖所示之不織布製造裝置1A，在紙層形成輸送帶16A上對紙層噴射高壓水蒸氣。作為紙層形成輸送帶16A之紙層形成帶的材質，較佳為PPS(聚伸苯硫)以及醯胺。在紙層形成輸送帶16A的紙層形成帶，能夠使用例如5網目之醯胺網線(NIPPON FILCON CO.,LTD.製)。在與紙層形成輸送帶16A上方所設置之蒸氣噴嘴14對向的位置，設有用以吸引從蒸氣噴嘴14所噴射之蒸氣的吸引盒15。紙層搬運輸送帶16A被噴射高壓水蒸氣之紙層被轉印至乾燥機22。 In the nonwoven fabric manufacturing apparatus 1 according to an embodiment of the present invention, high pressure water vapor is sprayed onto the paper layer on the suction drum 13. However, the nonwoven fabric manufacturing apparatus 1A shown in Fig. 9 sprays high-pressure water vapor onto the paper layer on the paper layer forming conveyor belt 16A. The material of the paper layer forming belt of the paper layer forming conveyor belt 16A is preferably PPS (polyphenylene sulfide) and decylamine. A paper layer forming belt of the conveyor belt 16A is formed on the paper layer, and for example, a mesh of 5 mesh mesh (manufactured by NIPPON FILCON CO., LTD.) can be used. A suction box 15 for sucking the vapor ejected from the vapor nozzle 14 is provided at a position opposed to the vapor nozzle 14 provided above the paper layer forming conveyor belt 16A. The paper layer conveyance belt 16A is transferred to the dryer 22 by the paper layer from which the high pressure water vapor is sprayed.
(不織布製造裝置之變形例2) (Modification 2 of non-woven fabric manufacturing apparatus)
於本發明之一實施形態的不織布製造裝置1，在一個 吸引滾筒13上從1台蒸氣噴嘴14對紙層噴射高壓水蒸氣。但是，於第10圖所示之不織布製造裝置1B，在2個吸引滾筒13上，分別從1台蒸氣噴嘴14對紙層噴射高壓水蒸氣。此時，從其中一個蒸氣噴嘴14對紙層其中一側的面噴射蒸氣，從另一個蒸氣噴嘴14對紙層另一側的面噴射蒸氣。藉此，在紙層的表面以及裏面形成有溝部。被噴射高壓水蒸氣之紙層被轉印至乾燥機22。 A non-woven fabric manufacturing apparatus 1 according to an embodiment of the present invention, in one High pressure water vapor is sprayed onto the paper layer from the one steam nozzle 14 on the suction drum 13. However, in the nonwoven fabric manufacturing apparatus 1B shown in Fig. 10, high pressure water vapor is sprayed onto the paper layer from one steam nozzle 14 on each of the two suction drums 13. At this time, steam is ejected from one of the vapor nozzles 14 to one side of the paper layer, and the other vapor nozzle 14 is ejected to the surface on the other side of the paper layer. Thereby, a groove portion is formed on the surface and the inside of the paper layer. The paper layer to which high pressure water vapor is sprayed is transferred to the dryer 22.
(不織布製造裝置之變形例3) (Modification 3 of Nonwoven Manufacturing Apparatus)
於本發明之實施形態的不織布製造裝置1，在一個吸引滾筒13上從1台蒸氣噴嘴14對紙層噴射高壓水蒸氣。但是，第11圖所示之不織布製造裝置1C，在1個吸引滾筒13C上從2台蒸氣噴嘴14、14C對紙層噴射高壓水蒸氣。被噴射高壓水蒸氣的紙層，不經由乾燥機而被捲取至捲取機21。因而，紙層藉由高壓水蒸氣被加以乾燥。在此情況，以乾燥機20乾燥後之紙層的濕度百分比較佳為10~20%。紙層的濕度百分比小於10%時，紙層的纖維間之氫鍵強度變強，用以藉由後述之高壓水蒸氣解開紙層纖維所須要的能量非常高。另外，紙層的濕度百分比大於20%時，會有難以使用高壓水蒸氣使紙層的濕度百分比降至5%以下的情況。為了使紙層更加乾燥，也可以用含有水蒸氣被加熱的高壓氣體(水分比例比高壓水蒸氣更小的高壓氣體)，代替高壓水蒸氣，對紙層進行噴射。 In the nonwoven fabric manufacturing apparatus 1 according to the embodiment of the present invention, high pressure water vapor is sprayed onto the paper layer from one steam nozzle 14 on one suction drum 13. However, in the nonwoven fabric manufacturing apparatus 1C shown in Fig. 11, high-pressure steam is sprayed onto the paper layer from the two vapor nozzles 14, 14C on one suction drum 13C. The paper layer to which high-pressure water vapor is sprayed is taken up to the winder 21 without passing through a dryer. Thus, the paper layer is dried by high pressure water vapor. In this case, the moisture percentage of the paper layer dried by the dryer 20 is preferably from 10 to 20%. When the moisture percentage of the paper layer is less than 10%, the hydrogen bond strength between the fibers of the paper layer becomes strong, and the energy required for unwinding the paper fiber by the high-pressure steam described later is very high. Further, when the moisture percentage of the paper layer is more than 20%, it may be difficult to reduce the humidity percentage of the paper layer to 5% or less by using high-pressure steam. In order to make the paper layer drier, the paper layer may be sprayed by using a high-pressure gas (a high-pressure gas having a water content lower than that of the high-pressure steam) heated with water vapor instead of the high-pressure steam.
也可將實施形態與變形例的其中之一，或者是複數個 加以組合。也可將變形例彼此以任何方式組合。 One of the embodiments and the modifications, or a plurality of Combine. The variants can also be combined with one another in any way.
以上說明僅為其中一例，發明並未被上述實施形態做任何限定。 The above description is only an example, and the invention is not limited to the above embodiment.
以下依據實施例將本發明做更詳細說明，本發明並非藉由該等實施例加以限定。 The invention is illustrated in more detail below on the basis of the examples, which are not limited by the examples.
於實施例以及比較例中，噴附蒸氣前紙層濕度百分比、噴附蒸氣後紙層濕度百分比、捲取時紙層濕度百分比、紙層單位面積重量、乾燥厚度、密度、乾拉伸強度、乾拉伸延性、濕拉伸強度以及濕拉伸延性，如下述般進行測定。 In the examples and comparative examples, the moisture percentage of the paper layer before the vapor deposition, the moisture percentage of the paper layer after the vapor deposition, the moisture percentage of the paper layer during the winding, the basis weight of the paper layer, the dry thickness, the density, the dry tensile strength, Dry tensile ductility, wet tensile strength, and wet tensile ductility were measured as follows.
(噴附蒸氣前紙層濕度百分比) (% moisture of paper layer before spraying steam)
將以乾燥機20乾燥後之紙層取樣30cm×30cm之大小，測定出乾燥機20的出口重量(W1)，之後測定出樣本片在105℃的恆溫槽靜置1時間使其絶乾後之重量(D1)。噴附蒸氣前紙層濕度百分比係N=10之測定值的平均值。 The paper layer dried by the dryer 20 was sampled to a size of 30 cm × 30 cm, and the outlet weight (W1) of the dryer 20 was measured, and then the sample piece was measured to stand in a constant temperature bath at 105 ° C for 1 time to be dried. Weight (D1). The moisture percentage of the paper layer before the vapor deposition is the average of the measured values of N=10.
噴附蒸氣前紙層濕度百分比=(W1-D1)/W1×100(%) Moisture percentage of paper layer before spraying steam = (W1-D1) / W1 × 100 (%)
(噴附蒸氣後紙層濕度百分比) (% moisture of paper layer after spraying steam)
在一個吸引滾筒13上從1台蒸氣噴嘴14對紙層噴射高壓水蒸氣後，將紙層取樣30cm×30cm之大小，測定出 蒸氣噴嘴14通過後的重量(W2)，之後測定出樣本片在105℃的恆溫槽靜置1時間使其絶乾後之重量(D2)。噴附蒸氣後紙層濕度百分比係N=10之測定值的平均值。 After spraying high-pressure water vapor onto the paper layer from one steam nozzle 14 on one suction drum 13, the paper layer was sampled at a size of 30 cm × 30 cm, and the measurement was performed. After the vapor nozzle 14 passed the weight (W2), the weight (D2) of the sample piece after standing in the constant temperature bath at 105 ° C for 1 time to be dried was measured. The moisture percentage of the paper layer after spraying the vapor is the average of the measured values of N=10.
噴附蒸氣後紙層濕度百分比=(W2-D2)/W2×100(%) Percentage of paper layer moisture after spraying steam = (W2-D2) / W2 × 100 (%)
(捲取時紙層濕度百分比) (% of paper layer moisture during winding)
將通過乾燥機22被捲取之紙層，取樣30cm×30cm之大小，測定捲取後的重量(W3)，之後測定出樣本片在105℃的恆溫槽靜置1時間使其絶乾後之重量(D3)。捲取時紙層濕度百分比係N=10之測定值的平均值。 The paper layer taken up by the dryer 22 was sampled to a size of 30 cm × 30 cm, and the weight after winding (W3) was measured, and then the sample piece was measured to stand in a constant temperature bath at 105 ° C for 1 time to be dried. Weight (D3). The percentage of paper layer moisture at the time of coiling is the average of the measured values of N=10.
捲取時紙層濕度百分比=(W3-D3)/W3×100(%) Percentage of paper layer moisture during coiling = (W3-D3) / W3 × 100 (%)
(紙層單位面積重量) (paper layer basis weight)
紙層的單位面積重量，係由測定捲取時紙層濕度百分比時的絶乾樣本重量(D3)算出。紙層單位面積重量係N=10之測定值的平均值。 The basis weight of the paper layer was calculated from the absolute dry weight (D3) when the moisture percentage of the paper layer at the time of winding was measured. The basis weight of the paper layer is the average of the measured values of N=10.
(乾燥厚度) (dry thickness)
使用具備15cm2之量規頭的厚度計(大榮化學精器製作所股份有限公司製型式FS-60DS)，以3g/cm2之測定荷重的測定條件對所製造之不織布之厚度進行測定。對1個測定用試料測定3處厚度，將3處厚度之平均值作為加壓前乾燥厚度。 The measurement conditions (Daiei Chemical Seiki Type FS-60DS manufactured by Co.), to determine 3g / cm 2 load of 15cm 2 using the gauge includes a head thickness gauge thickness of the produced non-woven fabric of the measurement. Three samples were measured for one measurement sample, and the average of the three thicknesses was used as the dry thickness before pressurization.
(密度) (density)
加壓後乾燥體積密度係由紙層單位面積重量、上述加壓後的紙層之乾燥厚度來算出。加壓後的紙層之乾燥厚度如以下的方式進行測定。將加壓後之紙層含浸於液態氮使其凍結後，以剃刀切割，回到常溫後，使用電子顯微鏡(例如，基恩斯公司VE7800)，以50倍的倍率測定加壓後之紙層厚度。使吸收性物品凍結的理由係為了防止因剃刀進行切割時的壓縮造成厚度變動。然後，加壓前之吸收體的單位面積重量除以厚度算出密度。 The dry bulk density after pressurization is calculated from the basis weight of the paper layer and the dry thickness of the paper layer after the pressurization. The dried thickness of the pressed paper layer was measured as follows. After the pressed paper layer was immersed in liquid nitrogen to be frozen, it was cut with a razor, and after returning to normal temperature, the thickness of the pressed paper layer was measured at a magnification of 50 times using an electron microscope (for example, Keynes VE7800). The reason why the absorbent article is frozen is to prevent thickness variation caused by compression at the time of cutting by the razor. Then, the weight per unit area of the absorber before pressurization was divided by the thickness to calculate the density.
(乾拉伸強度) (dry tensile strength)
從所製造之不織布，切下長邊方向為紙層之機械方向的25mm寬之長條狀試驗片、以及長度方向為紙層之寬度方向的25mm寬之長條狀試驗片，製作測定用試料。將機械方向以及寬度方向之測定用試料，使用具備最大荷重容量為50N之荷重元的拉力試驗機(島津製作所股份有限公司製，AUTOGRAPH型式AGS-1kNG)，分別對3個測定用試料，以100mm之夾具間距、100mm/分之拉伸速度的條件測定拉伸強度。將機械方向以及寬度方向之測定用試料的分別3個測定用試料之拉伸強度的平均值作為機械方向以及寬度方向的乾拉伸強度。 From the nonwoven fabric to be produced, a long test piece of 25 mm width in which the longitudinal direction is the machine direction of the paper layer, and a long test piece of 25 mm width in the width direction of the paper layer were cut out to prepare a sample for measurement. . For the sample for the measurement of the machine direction and the width direction, a tensile tester (AUTOGRAPH type AGS-1kNG, manufactured by Shimadzu Corporation), which has a load capacity of 50 N, is used, and each sample for measurement is 100 mm. The tensile strength was measured under the conditions of the jig pitch and the tensile speed of 100 mm/min. The average value of the tensile strengths of the three measurement samples of the sample for measurement in the machine direction and the width direction was defined as the dry tensile strength in the machine direction and the width direction.
(乾拉伸延性) (dry stretch ductility)
從所製造之不織布，切下長邊方向為紙層之機械方向的25mm寬之長條狀試驗片、以及長度方向為紙層之寬度方向的25mm寬之長條狀試驗片，製作測定用試料。將機械方向以及寬度方向之測定用試料，使用具備最大荷重容量為50N之荷重元的拉力試驗機(島津製作所股份有限公司製、AUTOGRAPH型式AGS-1kNG)，分別對3個測定用試料，以100mm之夾具間距、100mm/分之拉伸速度的條件測定出拉伸延性。在此，拉伸延性係指將使用拉力試驗機拉著測定用試料時之最大展距(mm)除以夾具間距(100mm)所算出之值。將機械方向以及寬度方向之測定用試料的分別3個測定用試料之拉伸延性的平均值作為機械方向以及寬度方向的乾拉伸延性。 From the nonwoven fabric to be produced, a long test piece of 25 mm width in which the longitudinal direction is the machine direction of the paper layer, and a long test piece of 25 mm width in the width direction of the paper layer were cut out to prepare a sample for measurement. . For the measurement of the machine direction and the width direction, a tensile tester (manufactured by Shimadzu Corporation, AUTOGRAPH type AGS-1kNG) equipped with a load cell having a maximum load capacity of 50 N was used, and each of the three measurement samples was set to 100 mm. The tensile ductility was measured under the conditions of the jig pitch and the tensile speed of 100 mm/min. Here, the tensile ductility refers to a value calculated by dividing the maximum spread (mm) when the measurement sample is pulled by the tensile tester by the jig pitch (100 mm). The average value of the tensile ductility of the three measurement samples of the sample for measurement in the machine direction and the width direction was defined as the dry stretch ductility in the machine direction and the width direction.
(濕拉伸強度) (wet tensile strength)
從所製造之不織布切下長邊方向為紙層之機械方向的25mm寬之長條狀試驗片、以及長度方向為紙層之寬度方向的25mm寬之長條狀試驗片，製作測定用試料，使測定用試料含浸於測定用試料質量之2.5倍的水(含水倍率250%)。然後，將機械方向以及寬度方向之測定用試料，使用具備最大荷重容量為50N之荷重元的拉力試驗機(島津製作所股份有限公司製、AUTOGRAPH型式AGS-1kNG)，分別對3個測定用試料，以100mm之夾具間距、100mm/分之拉伸速度的條件測定拉伸強度。將機械方向以及寬度方向之測定用試料的分別3個測定用試料之拉 伸強度的平均值作為機械方向以及寬度方向的濕拉伸強度。 A long test piece of 25 mm width in which the longitudinal direction is the machine direction of the paper layer and a long test piece of 25 mm width in the width direction of the paper layer were cut out from the produced non-woven fabric, and a sample for measurement was prepared. The measurement sample was impregnated with water (water content ratio: 250%) 2.5 times the mass of the measurement sample. Then, the sample for measurement in the machine direction and the width direction was subjected to a tensile tester (manufactured by Shimadzu Corporation, AUTOGRAPH type AGS-1kNG) having a load cell having a maximum load capacity of 50 N, and three samples for measurement were respectively used. The tensile strength was measured under the conditions of a jig pitch of 100 mm and a tensile speed of 100 mm/min. Three samples for measurement of the sample for measurement in the machine direction and the width direction are pulled The average value of the tensile strength is taken as the wet tensile strength in the machine direction and the width direction.
(濕拉伸延性) (wet stretch ductility)
從所製造之不織布切下長邊方向為紙層之機械方向的25mm寬之長條狀試驗片、以及長度方向為紙層之寬度方向的25mm寬之長條狀試驗片，製作測定用試料，使測定用試料含浸於測定用試料質量之2.5倍的水(含水倍率250%)。然後，將機械方向以及寬度方向之測定用試料，使用具備最大荷重容量為50N之荷重元的拉力試驗機(島津製作所股份有限公司製、AUTOGRAPH型式AGS-1kNG)，分別對3個測定用試料，以100mm之夾具間距、100mm/分之拉伸速度的條件測定出拉伸延性。將機械方向以及寬度方向之測定用試料的分別3個測定用試料之拉伸延性的平均值作為機械方向以及寬度方向的濕拉伸延性。 A long test piece of 25 mm width in which the longitudinal direction is the machine direction of the paper layer and a long test piece of 25 mm width in the width direction of the paper layer were cut out from the produced non-woven fabric, and a sample for measurement was prepared. The measurement sample was impregnated with water (water content ratio: 250%) 2.5 times the mass of the measurement sample. Then, the sample for measurement in the machine direction and the width direction was subjected to a tensile tester (manufactured by Shimadzu Corporation, AUTOGRAPH type AGS-1kNG) having a load cell having a maximum load capacity of 50 N, and three samples for measurement were respectively used. The tensile ductility was measured under the conditions of a jig pitch of 100 mm and a tensile speed of 100 mm/min. The average value of the tensile ductility of the three measurement samples of the sample for measurement in the machine direction and the width direction was defined as the wet stretchability in the machine direction and the width direction.
以下針對實施例以及比較例之製作方法進行說明。 Hereinafter, the production methods of the examples and the comparative examples will be described.
(實施例1) (Example 1)
使用於本發明之一實施形態的不織布製造裝置1製作實施例1。製作抄紙原料，該抄紙原料係包含：70重量%之針葉樹漂白牛皮紙漿(NBKP)；以及30重量%之纖度為1.1dtex，且纖維長度為7mm的嫘縈(DAIWABO RAYON Co.,Ltd製、CORONA)。抄紙原料的基重為50g /m2。然後，使用原料頭將抄紙原料供給至紙層形成帶(NIPPON FILCON CO.,LTD製OS80)上，使用吸引盒將抄紙原料加以脫水形成紙層。此時紙層之紙層濕度百分比為80%。之後，使用2台高壓水流噴嘴將高壓水流對紙層進行噴射。使用2台高壓水流噴嘴對紙層進行噴射之高壓水流的高壓水流能量為0.2846kW/m2。在此，高壓水流能量可從下述算式算出。 The first embodiment was produced using the nonwoven fabric manufacturing apparatus 1 of one embodiment of the present invention. A papermaking raw material is prepared, which comprises: 70% by weight of conifer bleached kraft pulp (NBKP); and 30% by weight of enamel having a fiber length of 1.1 dtex and a fiber length of 7 mm (DAIWABO RAYON Co., Ltd., CORONA) ). The basis weight of the papermaking raw material was 50 g / m 2 . Then, the papermaking raw material was supplied to a paper layer forming belt (OS80 manufactured by NIPPON FILCON CO., LTD) using a raw material head, and the papermaking raw material was dehydrated using a suction box to form a paper layer. At this time, the paper layer moisture percentage of the paper layer was 80%. Thereafter, a high pressure water jet was used to spray the paper layer using two high pressure water jet nozzles. The high-pressure water flow energy of the high-pressure water jet which sprayed the paper layer using two high-pressure water jet nozzles was 0.2846 kW/m 2 . Here, the high-pressure water flow energy can be calculated from the following formula.
高壓水流能量(kW/m2)=1.63×噴射壓力(kg/cm2)×噴射流量(m3/分)/處理時間(m/分)在此，噴射壓力(kg/cm2)=750×孔口開孔總面積(m2)×噴射壓力(kg/cm2)×0.495 High-pressure water flow energy (kW/m 2 ) = 1.63 × injection pressure (kg / cm 2 ) × injection flow rate (m 3 /min) / treatment time (m / min) Here, injection pressure (kg / cm 2 ) = 750 × total area of orifice opening (m 2 ) × injection pressure (kg/cm 2 ) × 0.495
另外，高壓水流噴嘴的前端與紙層的上面之間的距離為10mm。並且，高壓水流噴嘴之孔徑為92μm、孔間距為0.5mm。 In addition, the distance between the front end of the high pressure water jet nozzle and the upper surface of the paper layer was 10 mm. Further, the high pressure water jet nozzle has a pore diameter of 92 μm and a pore pitch of 0.5 mm.
紙層在被轉印至2台紙層搬運輸送帶後，被轉印至被加熱至120℃之楊克式烘缸，進行乾燥。 After the paper layer was transferred to the two paper layer conveyance belts, it was transferred to a Yankee dryer heated to 120 ° C and dried.
接著，使用1台蒸氣噴嘴，將高壓水蒸氣對紙層進行噴射。此時高壓水蒸氣的蒸氣壓力為0.7MPa，蒸氣溫度為175℃。另外，蒸氣噴嘴的前端與紙層的上面之間的距離為2mm。而且，蒸氣噴嘴的孔徑為300μm，孔間距為2．0mm。另外，吸引滾筒用以吸引紙層的吸引力為-1kPa。在吸引滾筒的外周使用不鏽鋼製的18網目開孔套筒。 Next, high pressure water vapor was used to spray the paper layer using one steam nozzle. At this time, the vapor pressure of the high pressure steam was 0.7 MPa, and the vapor temperature was 175 °C. Further, the distance between the front end of the vapor nozzle and the upper surface of the paper layer was 2 mm. Further, the vapor nozzle had a pore diameter of 300 μm and a pore pitch of 2.0 mm. In addition, the attraction force of the suction roller for attracting the paper layer is -1 kPa. A stainless steel 18 mesh opening sleeve was used on the outer circumference of the suction drum.
然後，紙層被轉印至被加熱至150℃之楊克式烘缸，進行乾燥。乾燥後之紙層成為實施例1。製造實施例1時的抄紙速度為70m/分。 Then, the paper layer was transferred to a Yankee dryer heated to 150 ° C and dried. The dried paper layer became Example 1. The papermaking speed at the time of producing Example 1 was 70 m/min.
(實施例2) (Example 2)
實施例2係除了使用楊克式烘缸，以噴附蒸氣前紙層濕度百分比成為10%的方式將紙層乾燥之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。 In the second embodiment, the paper layer was dried in the same manner as in the production method of Example 1, except that the paper layer was dried in such a manner that the moisture percentage of the paper layer before the vapor deposition was 10%.
(實施例3) (Example 3)
實施例3係除了使用楊克式烘缸，以噴附蒸氣前紙層濕度百分比成為40%的方式將紙層加以乾燥此點，以及使蒸氣噴嘴的前端與紙層的上面之間的距離為10mm之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。 In the third embodiment, except that the Yankee dryer is used, the paper layer is dried in such a manner that the moisture percentage of the paper layer before the vapor deposition is 40%, and the distance between the front end of the vapor nozzle and the upper surface of the paper layer is The rest was produced by the same method as the production method of Example 1 except for 10 mm.
(實施例4) (Example 4)
實施例4除了不將高壓水流對紙層進行噴射；以及使用楊克式烘缸，以噴附蒸氣前紙層濕度百分比成為40%的方式將紙層乾燥之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。 Example 4 except that the high pressure water stream is not sprayed onto the paper layer; and the Yankee dryer is used to dry the paper layer in such a manner that the moisture percentage of the paper layer before the steam is sprayed is 40%, and the rest is The manufacturing method of 1 is the same as the manufacturing method.
(實施例5) (Example 5)
實施例5，除了採用第9圖之不織布製造裝置1A(將高壓水蒸氣對紙層進行噴射時的紙層支撐體係使用5網目 之醯胺網線)進行製造；以及使用楊克式烘缸，以噴附蒸氣前紙層濕度百分比成為40%的方式將紙層乾燥之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。 Embodiment 5, except that the non-woven fabric manufacturing apparatus 1A of Fig. 9 is used (the paper layer supporting system when the high-pressure water vapor is sprayed on the paper layer uses 5 mesh) The ruthenium mesh line was manufactured; and the use of a Yankee dryer to dry the paper layer in such a manner that the moisture percentage of the paper layer before the vapor deposition was 40% was the same as in the production method of Example 1. The method of manufacturing.
(實施例6) (Example 6)
實施例6，除了採用第10圖的不織布製造裝置1B進行製造；使用楊克式烘缸，以噴附蒸氣前紙層濕度百分比成為40%的方式將紙層乾燥；以及蒸氣噴嘴之孔徑為500μm之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。2台蒸氣噴嘴以及2台吸引滾筒，與實施例1之製造所使用的蒸氣噴嘴以及吸引滾筒相同。 Embodiment 6 is manufactured by using the nonwoven fabric manufacturing apparatus 1B of Fig. 10; using a Yankee dryer, the paper layer is dried in such a manner that the moisture percentage of the paper layer before the vapor deposition is 40%; and the pore diameter of the steam nozzle is 500 μm. The rest were produced by the same method as the production method of Example 1. Two steam nozzles and two suction drums were the same as the steam nozzles and suction drums used in the production of Example 1.
(實施例7) (Example 7)
實施例7係除了使用楊克式烘缸，以噴附蒸氣前紙層濕度百分比成為40%的方式將紙層乾燥；高壓水蒸氣的蒸氣壓力為0.5MPa；高壓水蒸氣的蒸氣溫度為140℃以及蒸氣噴嘴之孔徑為500μm之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。 In Example 7, except that a Yankee dryer was used, the paper layer was dried in such a manner that the moisture percentage of the paper layer before the vapor deposition was 40%; the vapor pressure of the high-pressure steam was 0.5 MPa; and the vapor temperature of the high-pressure steam was 140 °C. The same was carried out in the same manner as in the production method of Example 1, except that the pore size of the vapor nozzle was 500 μm.
(實施例8) (Example 8)
實施例8除了採用第11圖的不織布製造裝置1C進行製造；使用楊克式烘缸，以噴附蒸氣前紙層濕度百分比成為20%的方式將紙層乾燥；以及蒸氣噴嘴之孔徑為500μm之外，其餘係藉由與實施例1之製造方法相同的方法進行 製造。2台蒸氣噴嘴與實施例1之製造所使用的蒸氣噴嘴相同。 Embodiment 8 is manufactured by using the nonwoven fabric manufacturing apparatus 1C of Fig. 11; using a Yankee dryer, the paper layer is dried in such a manner that the moisture percentage of the paper layer before the vapor deposition is 20%; and the pore diameter of the steam nozzle is 500 μm. The rest was carried out by the same method as the manufacturing method of Example 1. Manufacturing. Two steam nozzles were the same as the steam nozzles used in the production of Example 1.
(實施例9) (Example 9)
實施例9係除了高壓水蒸氣的蒸氣壓力為0.3MPa之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。 Example 9 was produced by the same method as the production method of Example 1, except that the vapor pressure of the high-pressure steam was 0.3 MPa.
(實施例10) (Embodiment 10)
實施例10係除了使用楊克式烘缸，以噴附蒸氣前紙層濕度百分比成為40%的方式將紙層加以乾燥此點，以及使蒸氣噴嘴的前端與紙層的上面之間的距離成為12mm之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。 In the embodiment 10, except that the Yankee dryer is used, the paper layer is dried in such a manner that the moisture percentage of the paper layer before the vapor deposition is 40%, and the distance between the front end of the vapor nozzle and the upper surface of the paper layer becomes The rest was produced by the same method as the production method of Example 1 except for 12 mm.
(實施例11) (Example 11)
實施例11係除了高壓水蒸氣的蒸氣壓力為0.2MPa之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。 Example 11 was produced by the same method as the production method of Example 1, except that the vapor pressure of the high-pressure steam was 0.2 MPa.
(比較例1) (Comparative Example 1)
比較例1係除了使用楊克式烘缸，以噴附蒸氣前紙層濕度百分比成為0%的方式將紙層乾燥之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。 Comparative Example 1 was produced by the same method as the production method of Example 1, except that the paper layer was dried in such a manner that the moisture percentage of the paper layer before the vapor deposition was 0% was carried out using a Yankee dryer.
(比較例2) (Comparative Example 2)
比較例2係除了使用楊克式烘缸，以噴附蒸氣前紙層濕度百分比成為60%的方式將紙層乾燥之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。 Comparative Example 2 was produced by the same method as the production method of Example 1, except that the paper layer was dried in such a manner that the moisture percentage of the paper layer before the vapor deposition was 60% was carried out using a Yankee dryer.
(比較例3) (Comparative Example 3)
比較例3，除了未將高壓水蒸氣對紙層進行噴射；以及使用楊克式烘缸，以噴附蒸氣前紙層濕度百分比成為30%的方式將紙層乾燥之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。 Comparative Example 3, except that the high-pressure water vapor was not sprayed on the paper layer; and the Yankee dryer was used to dry the paper layer in such a manner that the moisture percentage of the paper layer before the vapor deposition was 30%, and the rest was The production method of Example 1 was carried out in the same manner as in the production.
(比較例4) (Comparative Example 4)
比較例4除了採用第12圖的不織布製造裝置1D進行製造之外，其餘係藉由與實施例1之製造方法相同的方法進行製造。於製造比較例4所使用的不織布製造裝置1D，在以乾燥機20進行乾燥前將高壓水蒸氣對紙層進行噴射。蒸氣噴嘴14以及從蒸氣噴嘴14所噴射之高壓水蒸氣的條件，與實施例1之製造所使用的蒸氣噴嘴14以及從蒸氣噴嘴14所噴射之高壓水蒸氣的條件相同。 Comparative Example 4 was produced by the same method as the production method of Example 1, except that the nonwoven fabric manufacturing apparatus 1D of Fig. 12 was used for the production. In the nonwoven fabric manufacturing apparatus 1D used in the manufacture of Comparative Example 4, high-pressure steam was sprayed on the paper layer before drying by the dryer 20. The conditions of the steam nozzle 14 and the high-pressure steam injected from the steam nozzle 14 are the same as those of the steam nozzle 14 used in the production of the first embodiment and the high-pressure steam sprayed from the steam nozzle 14.
以上實施例以及比較例之製造條件示於表1。 The manufacturing conditions of the above examples and comparative examples are shown in Table 1.
將以上實施例以及比較例之噴附蒸氣前紙層濕度百分比、噴附蒸氣後紙層濕度百分比、捲取時紙層濕度百分比、紙層單位面積重量、乾燥厚度、密度、乾拉伸強度、乾拉伸延性、濕拉伸強度以及濕拉伸延性示於表2。 The moisture percentage of the paper layer before the spraying of the vapor in the above examples and comparative examples, the moisture percentage of the paper layer after the vapor deposition, the moisture percentage of the paper layer during the winding, the basis weight of the paper layer, the dry thickness, the density, the dry tensile strength, The dry tensile ductility, wet tensile strength, and wet tensile ductility are shown in Table 2.
實施例1~9皆為捲取時之紙層濕度百分比為5%以下，乾燥厚度為0.50mm以上，密度為0.10g/cm3以下。比較例1、3、4雖然捲取時的紙層濕度百分比為5%以下，乾燥厚度小於0.50mm，密度大於0.10g/cm3。比較例2係乾燥厚度為0.50mm以上，密度為0.10g/cm3以下，紙層濕度百分比大於5%。 Each of Examples 1 to 9 has a paper layer moisture percentage of 5% or less at the time of winding, a dry thickness of 0.50 mm or more, and a density of 0.10 g/cm 3 or less. In Comparative Examples 1, 3, and 4, although the paper layer moisture percentage at the time of winding was 5% or less, the dry thickness was less than 0.50 mm, and the density was more than 0.10 g/cm 3 . Comparative Example 2 had a dry thickness of 0.50 mm or more, a density of 0.10 g/cm 3 or less, and a paper layer moisture percentage of more than 5%.
藉由實施例1~9與比較例3進行比較，可知藉由將高壓水蒸氣對紙層進行噴射能夠使紙層的體積變大密度降低。另外，藉由實施例1~9與比較例1，2，4進行比較，可知較佳的噴附蒸氣前紙層濕度百分比為10~45%。而且，藉由實施例1~9與比較例4進行比較，可知比起在乾燥前將高壓水蒸氣對紙層進行噴射，使紙層乾燥為既定之濕度百分比後再將高壓水蒸氣對紙層進行噴射，比較能夠使紙層的體積變大。另外，藉由實施例1~9與實施例10進行比較，可知蒸氣噴嘴的前端與紙層的上面之間較佳的距離為10mm以下。而且，藉由實施例1~9與實施例11進行比較，可知高壓水蒸氣之較佳蒸氣壓力為0.3MPa以上。 Comparing Examples 1 to 9 with Comparative Example 3, it was found that the volume of the paper layer became large and the density was lowered by spraying the high-pressure water vapor on the paper layer. Further, by comparison of Examples 1 to 9 with Comparative Examples 1, 2, and 4, it is understood that the preferred moisture percentage of the paper layer before the vapor deposition is 10 to 45%. Further, by comparing Examples 1 to 9 with Comparative Example 4, it was found that the high-pressure water vapor was sprayed on the paper layer before drying, and the paper layer was dried to a predetermined humidity percentage, and then the high-pressure water vapor was applied to the paper layer. By performing the spraying, it is possible to make the volume of the paper layer larger. Further, by comparison of Examples 1 to 9 with Example 10, it is understood that a preferred distance between the tip end of the vapor nozzle and the upper surface of the paper layer is 10 mm or less. Further, by comparison of Examples 1 to 9 with Example 11, it is understood that the preferred vapor pressure of the high-pressure steam is 0.3 MPa or more.
由實施例4可知即使不將高壓水流對紙層進行噴射，藉由控制紙層的濕度百分比，能夠透過高壓水蒸氣防止紙層穿孔、紙層破裂、或是噴散等情形。這是由於藉由紙層乾燥時變強的紙層纖維彼此之氫鍵，使得紙層強度增加。另外，由於紙層的強度提高，因而在此情況將高壓水蒸氣對紙層進行噴射時，在紙層上不須設置用以防止紙層被高 壓水蒸氣噴散的網。因而，以高壓水蒸氣所進行之紙層的處理效率提升。另外，由於不須設置上述網，因此能夠抑制不織布製造裝置之維修以及不織布之製造成本。 According to the fourth embodiment, even if the high-pressure water stream is not sprayed on the paper layer, by controlling the moisture percentage of the paper layer, it is possible to prevent the paper layer from being perforated, the paper layer from being broken, or being scattered by the high-pressure water vapor. This is because the strength of the paper layer is increased by the hydrogen bonding of the paper fibers which become stronger when the paper layer is dried. In addition, since the strength of the paper layer is increased, when high-pressure water vapor is sprayed on the paper layer in this case, it is not necessary to prevent the paper layer from being high on the paper layer. A network of water vapor vapours. Thus, the processing efficiency of the paper layer by high pressure water vapor is improved. Further, since it is not necessary to provide the above-described net, it is possible to suppress the maintenance of the nonwoven fabric manufacturing apparatus and the manufacturing cost of the nonwoven fabric.
由實施例5、6、8，可知使用上述之變形例1~3的不織布製造裝置1A~1C，也能夠製造出強度高、膨鬆、並且具有柔軟性之不織布。尤其可知使用上述之變形例1~3的不織布製造裝置1A~1C，也能夠製造出捲取時之紙層濕度百分比為5%以下，乾燥厚度為0.45mm以上，密度為0.10g/cm3以下的不織布。 According to the fifth, sixth, and eighth embodiments, it is understood that the non-woven fabric manufacturing apparatuses 1A to 1C of the above-described modified examples 1 to 3 can also produce a non-woven fabric having high strength, bulkiness, and flexibility. In particular, it is also known that the nonwoven fabric manufacturing apparatuses 1A to 1C of the above-described Modifications 1 to 3 can also produce a paper layer moisture percentage of 5% or less at the time of winding, a dry thickness of 0.45 mm or more, and a density of 0.10 g/cm 3 or less. Non-woven.
1，1A~1D‧‧‧不織布製造裝置 1,1A~1D‧‧‧Nonwoven manufacturing equipment
11‧‧‧原料供給頭 11‧‧‧Material supply head
12‧‧‧高壓水流噴嘴 12‧‧‧High pressure water jet nozzle
13‧‧‧吸引滾筒 13‧‧‧Attraction roller
14‧‧‧蒸氣噴嘴 14‧‧‧Vapor nozzle
15‧‧‧吸引盒 15‧‧‧Attraction box
16，16A‧‧‧紙層形成輸送帶 16,16A‧‧‧paper layer forming conveyor belt
17‧‧‧吸引拾取器 17‧‧‧Attracting pickers
18，19‧‧‧紙層搬運輸送帶 18,19‧‧‧Paper handling conveyor belt
20，22‧‧‧乾燥機 20,22‧‧‧dryer
21‧‧‧捲取機 21‧‧‧Winding machine
23‧‧‧紙層 23‧‧‧paper layer
31‧‧‧高壓水流 31‧‧‧High pressure water flow
32‧‧‧溝部 32‧‧‧Ditch
41‧‧‧紙層形成帶 41‧‧‧Paper layer forming belt
51‧‧‧高壓水蒸氣 51‧‧‧High pressure water vapor
52‧‧‧溝部 52‧‧‧Ditch
第1圖係用以說明使用於本發明之一實施形態的不織布之製造方法的不織布製造裝置。 Fig. 1 is a view showing a nonwoven fabric manufacturing apparatus for use in a method of manufacturing a nonwoven fabric according to an embodiment of the present invention.
第2圖係表示高壓水流噴嘴之一例的圖。 Fig. 2 is a view showing an example of a high pressure water jet nozzle.
第3圖係用以說明藉由高壓水流使紙層之纖維彼此交絡的原理。 Figure 3 is a diagram for explaining the principle of entanglement of fibers of a paper layer with each other by a high-pressure water stream.
第4圖係被噴射高壓水流之紙層的寬度方向剖面圖。 Fig. 4 is a cross-sectional view in the width direction of a paper layer which is sprayed with a high-pressure water stream.
第5圖係表示蒸氣噴嘴之一例的圖。 Fig. 5 is a view showing an example of a steam nozzle.
第6圖係用於說明藉由高壓水蒸氣，使紙層之纖維解開，紙層體積變高之原理。 Fig. 6 is a view for explaining the principle of dissolving the fibers of the paper layer by high-pressure water vapor and increasing the volume of the paper layer.
第7圖係用於說明噴射高壓水蒸氣前之紙層與噴射後的紙層之間的紙層厚度變化。 Figure 7 is a diagram for explaining the change in the thickness of the paper layer between the paper layer before the high-pressure water jet is sprayed and the paper layer after the jetting.
第8圖係被噴射高壓水蒸氣之紙層的寬度方向剖面圖。 Fig. 8 is a cross-sectional view in the width direction of a paper layer on which high-pressure water vapor is sprayed.
第9圖係用以說明使用於本發明之一實施形態的不織布之製造方法的不織布製造裝置之變形例。 Fig. 9 is a view for explaining a modification of the nonwoven fabric manufacturing apparatus used in the method of manufacturing a nonwoven fabric according to an embodiment of the present invention.
第10圖係用以說明使用於本發明之一實施形態的不織布之製造方法的不織布製造裝置之變形例。 Fig. 10 is a view for explaining a modification of the nonwoven fabric manufacturing apparatus used in the method of manufacturing a nonwoven fabric according to an embodiment of the present invention.
第11圖係用以說明使用於本發明之一實施形態的不織布之製造方法的不織布製造裝置之變形例。 Fig. 11 is a view for explaining a modification of the nonwoven fabric manufacturing apparatus used in the method of manufacturing a nonwoven fabric according to an embodiment of the present invention.
第12圖係用於說明比較例4之製造所使用的不織布製造裝置。 Fig. 12 is a view showing a nonwoven fabric manufacturing apparatus used for the production of Comparative Example 4.
1‧‧‧不織布製造裝置 1‧‧‧Nonwoven manufacturing equipment
11‧‧‧原料供給頭 11‧‧‧Material supply head
12‧‧‧高壓水流噴嘴 12‧‧‧High pressure water jet nozzle
13‧‧‧吸引滾筒 13‧‧‧Attraction roller
14‧‧‧蒸氣噴嘴 14‧‧‧Vapor nozzle
15‧‧‧吸引盒 15‧‧‧Attraction box
16‧‧‧紙層形成輸送帶 16‧‧‧Paper layer forming conveyor belt
17‧‧‧吸引拾取器 17‧‧‧Attracting pickers
18，19‧‧‧紙層搬運輸送帶 18,19‧‧‧Paper handling conveyor belt
20，22‧‧‧乾燥機 20,22‧‧‧dryer
21‧‧‧捲取機 21‧‧‧Winding machine
23‧‧‧紙層 23‧‧‧paper layer
24‧‧‧位置 24‧‧‧ position
25‧‧‧位置 25‧‧‧ position
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011068234A JP5683346B2 (en) | 2011-03-25 | 2011-03-25 | Nonwoven manufacturing method |
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| TW201300602A true TW201300602A (en) | 2013-01-01 |
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| TW101110137A TW201300602A (en) | 2011-03-25 | 2012-03-23 | Manufacturing method for nonwoven fabric |
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| JP (1) | JP5683346B2 (en) |
| TW (1) | TW201300602A (en) |
| WO (1) | WO2012132966A1 (en) |
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| JP5901129B2 (en) * | 2011-03-28 | 2016-04-06 | ユニ・チャーム株式会社 | Nonwoven manufacturing method |
| JP5787700B2 (en) * | 2011-09-30 | 2015-09-30 | ユニ・チャーム株式会社 | Nonwoven manufacturing method |
| JP5752078B2 (en) * | 2012-03-30 | 2015-07-22 | ユニ・チャーム株式会社 | Nonwoven fabric and method for producing nonwoven fabric |
| JP5755173B2 (en) * | 2012-03-30 | 2015-07-29 | ユニ・チャーム株式会社 | Nonwoven fabric and method for producing nonwoven fabric |
| JP6091168B2 (en) | 2012-11-09 | 2017-03-08 | ユニ・チャーム株式会社 | Wet wipes and wet wipes packaging |
| JP7089736B2 (en) * | 2017-02-07 | 2022-06-23 | ユニチカ株式会社 | Manufacturing method of spunlace non-woven fabric |
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| US5137600A (en) * | 1990-11-01 | 1992-08-11 | Kimberley-Clark Corporation | Hydraulically needled nonwoven pulp fiber web |
| JP3461122B2 (en) * | 1998-07-17 | 2003-10-27 | 花王株式会社 | Method for producing bulky paper |
| JP4850257B2 (en) * | 2002-10-08 | 2012-01-11 | 三菱化学エンジニアリング株式会社 | Nonwoven fabric manufacturing equipment using pressurized water vapor jet nozzle |
| JP2009052159A (en) * | 2007-08-24 | 2009-03-12 | Asahi Kasei Fibers Corp | Method for heat-treating cellulosic material or molded article thereof |
| JP5294671B2 (en) * | 2008-03-27 | 2013-09-18 | ユニ・チャーム株式会社 | Bulk paper with thermally expandable particles and method for producing the same |
| JP5596392B2 (en) * | 2010-03-30 | 2014-09-24 | 花王株式会社 | Fiber sheet and absorbent article using the same |
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| WO2012132966A1 (en) | 2012-10-04 |
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