TWI805894B - Hygroscopic sheet, disposable wearing article and manufacturing method thereof - Google Patents
Hygroscopic sheet, disposable wearing article and manufacturing method thereof Download PDFInfo
- Publication number
- TWI805894B TWI805894B TW109102075A TW109102075A TWI805894B TW I805894 B TWI805894 B TW I805894B TW 109102075 A TW109102075 A TW 109102075A TW 109102075 A TW109102075 A TW 109102075A TW I805894 B TWI805894 B TW I805894B
- Authority
- TW
- Taiwan
- Prior art keywords
- moisture
- absorbing sheet
- thin portion
- sheet
- nonwoven fabric
- Prior art date
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Nursing (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Laminated Bodies (AREA)
Abstract
本發明所要解決的問題在於提供一種吸濕片、拋棄式穿著用物品及其製造方法,該吸濕片具有優異的用以排除濕氣之透氣性、及優異的用以將濕氣效率良好地供給到吸濕材料之透氣性。為了解決此問題,本發明的吸濕片15,具有:不織布16,其隔開間隔並重複地形成有在厚度方向上收縮的薄部16t;及,微小纖維狀纖維素集合體17,其附著在薄部16t內。The problem to be solved by the present invention is to provide a hygroscopic sheet, a disposable wearing article and a manufacturing method thereof. Provides breathability to hygroscopic materials. In order to solve this problem, the hygroscopic sheet 15 of the present invention has: a non-woven fabric 16, which is spaced apart and repeatedly formed with thin portions 16t shrinking in the thickness direction; Inside the thin portion 16t.
Description
本發明關於吸濕片、拋棄式穿著用物品及其製造方法。The present invention relates to a moisture-absorbing sheet, a disposable wearing article and a method of making the same.
在各種理由下,提案一種在拋棄式尿布或生理用衛生棉等拋棄式穿著用物品中具備吸濕性的技術。For various reasons, techniques for providing hygroscopicity in disposable wearing articles such as disposable diapers and sanitary napkins have been proposed.
例如,拋棄式尿布或生理用衛生棉等拋棄式穿著用物品,具有吸收尿等排泄液體之吸收體、及覆蓋吸收體的背面側之不透液性樹脂膜,為了防止穿著時的悶熱而使用了具有在厚度方向上的透濕性之不透液性樹脂膜(例如參照專利文獻1、2)。又,在大多的吸收性物品中,為了將產品外表面作成布般的肌膚觸感和外觀,也實行藉由外裝不織布來覆蓋不透液性樹脂膜的背面側(例如參照專利文獻2)。For example, disposable wearing articles such as disposable diapers and sanitary napkins have an absorbent body that absorbs excreted liquid such as urine, and a liquid-impermeable resin film covering the back side of the absorbent body, and are used to prevent stuffiness when worn. A liquid-impermeable resin film having moisture permeability in the thickness direction has been obtained (for example, refer to Patent Documents 1 and 2). In addition, in most absorbent articles, in order to make the outer surface of the product feel and look like cloth, the back side of the liquid-impermeable resin film is also covered with an outer non-woven fabric (for example, refer to Patent Document 2). .
然而,在先前的吸收性物品中,為了防止悶熱而提高不透液性樹脂膜的透濕性反而造成問題,在吸收體吸收排泄液體後等的情況,產品外表面或貼身衣物會保持濕氣,而造成用手觸摸時會誤認有液體漏出的情況。However, in conventional absorbent articles, the improvement of the moisture permeability of the liquid-impermeable resin film in order to prevent stuffiness caused a problem instead, and moisture was retained on the outer surface of the product or undergarments after the absorbent body absorbed excreted liquid, etc. , and cause the situation that liquid leakage will be mistaken when touched by hand.
此問題,只要降低不透液性樹脂膜的透濕性就能夠解決,但是此時就不能夠避免悶熱防止性的降低。於是,例如提案一種在不透液性樹脂膜或外裝不織布設置吸濕層的技術(例如參照專利文獻1)。This problem can be solved by reducing the moisture permeability of the liquid-impermeable resin film, but in this case, the reduction in the stuffiness prevention property cannot be avoided. Then, for example, a technique of providing a moisture-absorbing layer on a liquid-impermeable resin film or an exterior nonwoven fabric is proposed (for example, refer to Patent Document 1).
又,一般的拋棄式穿著用物品缺乏透氣性,所以已知穿著時的拋棄式穿著用物品的內部容易悶熱,為了防止此情況也提案一種安裝吸濕片的技術(例如參照專利文獻3)。Also, since general disposable wearing articles lack air permeability, it is known that the inside of disposable wearing articles tends to be stuffy when worn, and a technique of attaching a moisture-absorbing sheet to prevent this has also been proposed (for example, refer to Patent Document 3).
進一步,也可以使用吸濕片作為產品包裝材料、或在產品包裝內使用吸濕片(例如參照專利文獻4)。Furthermore, a hygroscopic sheet can also be used as a product packaging material, or a hygroscopic sheet can be used in product packaging (for example, refer patent document 4).
但是,在吸濕片中,吸濕材料的性能當然重要,此外用以排除濕氣之透氣性、及用以將濕氣效率良好地供給到吸濕材料之透氣性也很重要,所以先前的吸濕片在此方面仍有改善的空間。However, in the moisture-absorbing sheet, the performance of the hygroscopic material is of course important, and the air permeability for removing moisture and the air permeability for efficiently supplying moisture to the hygroscopic material are also very important, so the previous Absorbent sheets still have room for improvement in this regard.
[先前技術文獻] (專利文獻) 專利文獻1:日本專利6442098號公報 專利文獻2:日本特開2017-144174號公報 專利文獻3:日本特開2010-279621號公報 專利文獻4:日本特開2010-279606號公報[Prior Art Literature] (patent documents) Patent Document 1: Japanese Patent No. 6442098 Patent Document 2: Japanese Patent Laid-Open No. 2017-144174 Patent Document 3: Japanese Patent Laid-Open No. 2010-279621 Patent Document 4: Japanese Patent Laid-Open No. 2010-279606
[發明所欲解決的問題] 於是,本發明的主要所欲解決的問題在於提供一種吸濕片、拋棄式穿著用物品及其製造方法,該吸濕片具有優異的用以排除濕氣之透氣性、及優異的用以將濕氣效率良好地供給到吸濕材料之透氣性。[Problem to be solved by the invention] Therefore, the main problem to be solved by the present invention is to provide a hygroscopic sheet, a disposable wearing article and a manufacturing method thereof, the hygroscopic sheet has excellent air permeability for removing moisture, and excellent Moisture is efficiently supplied to the breathability of the hygroscopic material.
[解決問題的技術手段] 解決了上述問題之吸濕片等,如下所述。 >第一態樣> 一種吸濕片,其特徵在於,具有: 不織布,其隔開間隔並重複地形成有在厚度方向上收縮的薄部;及, 微小纖維狀纖維素集合體,其附著在前述薄部內。[Technical means to solve the problem] A moisture-absorbing sheet and the like which solve the above-mentioned problems are as follows. >First Form> A hygroscopic sheet, characterized in that it has: A nonwoven fabric which is spaced apart and repeatedly formed with thin portions shrunk in the thickness direction; and, Microfibrous cellulose aggregates attached to the aforementioned thin portion.
(作用效果) 本吸濕片具有下述特徵:以隔開間隔並重複地形成有薄部之不織布作為基本,且具有高吸濕性的微小纖維狀纖維素集合體附著在薄部內。因此,本吸濕片,即便被夾在物體或構件之間來使用,也能夠在該物體與吸濕片的薄部之間、或該構件與吸濕片的薄部之間形成透氣間隙。藉此,在本吸濕片中,能夠通過此透氣間隙並沿著吸濕片的表面來排除濕氣。又,在該過程中,能夠將濕氣效率良好地供給到吸濕原材料也就是微小纖維狀纖維素集合體,並促使吸濕。這種吸濕片,也能夠單獨地使用,也能夠如後述般地作為拋棄式穿著用物品的構件來使用。(Effect) This moisture-absorbing sheet is characterized in that it is based on a nonwoven fabric in which thin portions are repeatedly formed at intervals, and fine fibrous cellulose aggregates having high hygroscopicity adhere to the thin portions. Therefore, even if the present hygroscopic sheet is used sandwiched between objects or members, an air-permeable gap can be formed between the object and the thin portion of the hygroscopic sheet, or between the member and the thin portion of the hygroscopic sheet. Thereby, in the present hygroscopic sheet, moisture can be expelled through the air-permeable gap and along the surface of the hygroscopic sheet. In addition, in this process, moisture can be efficiently supplied to the hygroscopic material, that is, the microfibrous cellulose aggregate, and moisture absorption can be promoted. Such a moisture-absorbing sheet can also be used alone, and can also be used as a member of a disposable wearing article as described later.
>第二態樣> 如第一態樣所述之吸濕片,其中,在前述薄部以外,不具有前述微小纖維狀纖維素集合體。>Second Form> The moisture-absorbing sheet according to the first aspect, which does not have the aforementioned fine fibrous cellulose aggregates other than the aforementioned thin portion.
(作用效果) 微小纖維狀纖維素集合體是硬質的。因此,吸濕片,較佳為僅在薄部中附著有微小纖維狀纖維素集合體。藉此,在吸濕片中的薄部以外能夠柔軟地變形,並且使用者或穿著者不容易接觸到硬質的薄部、或者肌膚不易感受到該硬度(硬質感)。(Effect) Microfibrous cellulose aggregates are hard. Therefore, in the moisture-absorbing sheet, it is preferable that fine fibrous cellulose aggregates adhere only to the thin portion. Thereby, the moisture-absorbing sheet can be deformed softly except for the thin portion, and the hard thin portion is less likely to be touched by the user or the wearer, or the hardness (hard feeling) is less likely to be felt by the skin.
>第三態樣> 如第一態樣或第二態樣所述之吸濕片,其中,前述薄部被設置成條紋狀或格子狀。>Third state> The moisture-absorbing sheet according to the first aspect or the second aspect, wherein the thin portion is provided in a stripe shape or a grid shape.
(作用效果) 若將薄部設置成條紋狀或格子狀,則透氣間隙的連續性提高。因此,用以排除濕氣之透氣性、及用以將濕氣效率良好地供給到吸濕材料之透氣性,能夠變得更加優異。(Effect) If the thin portion is provided in a stripe shape or a lattice shape, the continuity of the air-permeable gaps is improved. Therefore, the air permeability for removing moisture and the air permeability for efficiently supplying moisture to the hygroscopic material can be further improved.
>第四態樣> 如第一態樣或第二態樣所述之吸濕片,其中,構成前述吸濕片的前述不織布,是細度為2~10dtex且單位面積的質量為20~40g/m2 的短纖維不織布; 並且,在前述薄部中的微小纖維狀纖維素集合體的附著量為0.1~5.0g/m2 。>Aspect 4> The moisture-absorbing sheet according to the first aspect or the second aspect, wherein the nonwoven fabric constituting the moisture-absorbing sheet has a fineness of 2 to 10 dtex and a mass per unit area of 20 to 40 g /m 2 of short fiber nonwoven fabric; and, the adhesion amount of the fine fibrous cellulose aggregates in the aforementioned thin portion is 0.1 to 5.0 g/m 2 .
(作用效果) 構成吸濕片的不織布沒有特別限定,但是較佳為具有高的蓬鬆性、優異的塑形性,所以較佳為上述範圍內的不織布。又,為了提升吸濕性,微小纖維狀纖維素集合體的附著量越多越好,但是若太多則會造成產品不必要地變硬。因此,在薄部中的微小纖維狀纖維素集合體的含有量,較佳為在上述範圍內。(Effect) The non-woven fabric constituting the moisture-absorbing sheet is not particularly limited, but preferably has high bulkiness and excellent moldability, so it is preferably a non-woven fabric within the above-mentioned range. Also, in order to improve the hygroscopicity, it is better to attach as much fine fibrous cellulose aggregates as possible, but if it is too large, the product becomes hard unnecessarily. Therefore, the content of the fine fibrous cellulose aggregates in the thin portion is preferably within the above range.
>第五態樣> 一種拋棄式穿著用物品,具有:吸收體、被設置在前述吸收體的背面側且具有透氣性之不透液性樹脂膜、及覆蓋前述不透液性樹脂膜的背面側之外裝不織布; 該拋棄式穿著用物品的特徵在於,具有:被設置在前述不透液性樹脂膜與前述外裝不織布之間的吸濕片; 其中,前述吸濕片具有:不織布,其隔開間隔並重複地形成有在厚度方向上收縮的薄部;及,微小纖維狀纖維素集合體,其附著在前述薄部內; 並且,在前述外裝不織布與前述薄部之間、及前述不透液性樹脂膜與前述薄部之間,各自具有透氣間隙。>Fifth aspect> A disposable wearing article comprising: an absorber, an air-permeable liquid-impermeable resin film provided on the back side of the absorber, and an exterior nonwoven fabric covering the back side of the liquid-impermeable resin film; This disposable wearing article is characterized by comprising: a moisture-absorbing sheet provided between the liquid-impermeable resin film and the outer nonwoven fabric; Wherein, the moisture-absorbing sheet has: a non-woven fabric repeatedly formed with thin portions shrinking in the thickness direction at intervals; and a fine fibrous cellulose aggregate adhered to the thin portions; Furthermore, there are air-permeable gaps between the exterior nonwoven fabric and the thin portion, and between the liquid-impermeable resin film and the thin portion, respectively.
(作用效果) 本拋棄式穿著用物品,使第一態樣的吸濕片存在於不透液性樹脂膜與外裝不織布之間,並形成透氣間隙。因此,依據本拋棄式穿著用物品,能夠利用吸濕片來對在排泄液體的吸收後增加的自不透液性樹脂膜排除的濕氣,效果良好地進行吸濕,使得產品外表面或貼身衣物不容易有濕黏的觸感。(Effect) In this disposable wearing article, the moisture-absorbing sheet of the first aspect is present between the liquid-impermeable resin film and the outer non-woven fabric to form an air-permeable gap. Therefore, according to this disposable wearing article, it is possible to utilize the moisture-absorbing sheet to effectively absorb the moisture removed from the liquid-impermeable resin film that increases after the absorption of the excreted liquid, so that the outer surface of the product or the next-to-body Clothes are less likely to feel wet and sticky to the touch.
>第六態樣> 一種拋棄式穿著用物品,其特徵在於,具有:透氣性的肌膚接觸層,其接觸穿著者的肌膚;及,吸濕片,其被設置成具有鄰接此肌膚接觸層的背面側之部分; 其中,前述吸濕片具有:不織布,其隔開間隔並重複地形成有在厚度方向上收縮的薄部;及,微小纖維狀纖維素集合體,其附著在薄部內; 並且,在前述肌膚接觸層與前述薄部之間,具有透氣間隙。>Sixth Aspect> A disposable wearing article, characterized in that it has: a breathable skin contact layer, which contacts the wearer's skin; and, a moisture-absorbing sheet, which is provided with a portion adjacent to the back side of the skin contact layer; Among them, the moisture-absorbing sheet has: a non-woven fabric repeatedly formed with thin portions shrinking in the thickness direction at intervals; and fine fibrous cellulose aggregates adhered in the thin portions; In addition, there is an air-permeable gap between the skin contact layer and the thin portion.
(作用效果) 本拋棄式穿著用物品,為了防止穿著時的悶熱而設置吸濕片,該吸濕片具有鄰接此肌膚接觸層的背面側之部分。藉此,對穿著時的拋棄式穿著用物品的內部中的濕氣效率良好地進行吸濕、或排除到外部,而能夠防止悶熱。(Effect) This disposable wearing article is provided with a moisture-absorbing sheet to prevent stuffiness when worn, and the moisture-absorbing sheet has a portion adjacent to the back side of the skin contact layer. Thereby, moisture in the interior of the disposable wearing article at the time of wearing is efficiently absorbed or discharged to the outside, thereby preventing stuffiness.
>第七態樣> 一種拋棄式穿著用物品的製造方法,其特徵在於,包含:製作吸濕片的步驟,其將微小纖維狀纖維素的分散液,以隔開間隔並重複的圖案的方式塗佈到不織布,並使前述分散液乾燥,藉此在前述分散液的塗佈部分形成薄部,同時在前述薄部中形成微小纖維狀纖維素集合體;及, 製作拋棄式穿著用物品的步驟,其將前述吸濕片,安裝在前述拋棄式穿著用物品的在厚度方向上重疊的構件之間,並使前述構件與前述薄部之間具有透氣間隙。>Seventh aspect> A method for manufacturing a disposable wearing article, characterized by comprising: a step of producing a moisture-absorbing sheet, which applies a dispersion of microfibrous cellulose to a nonwoven fabric in a repeating pattern at intervals, and drying the aforementioned dispersion liquid, thereby forming a thin portion in the applied portion of the aforementioned dispersion liquid, and simultaneously forming fine fibrous cellulose aggregates in the aforementioned thin portion; and, A step of producing a disposable wearing article, comprising attaching the moisture-absorbing sheet between members overlapping in the thickness direction of the disposable wearing article, and providing an air-permeable gap between the member and the thin portion.
(作用效果) 若將微小纖維狀纖維素的分散液塗佈到不織布之後,使塗佈部分的分散液乾燥,則當微小纖維狀纖維素集合體要形成時,微小纖維狀纖維素集合體的體積會逐漸地減少。然後,伴隨於此,不織布的分散液的塗佈部分的體積也會減少,而自動地形成薄部。本製造方法為利用此現象的方法。 例如,也可以藉由壓紋(emboss)加工來在成為吸濕片之不織布上形成薄部,同時或在其後將微小纖維狀纖維素集合體附著到薄部,但是依據本製造法,僅將微小纖維狀纖維素的分散液以想要的圖案的方式塗佈到成為吸濕片之不織布,即可形成吸濕片。 又,將微小纖維狀纖維素的分散液塗佈到不織布之後,若在乾燥前(也就是薄部形成前)就貼附至拋棄式穿著用物品的其他構件上,則可能造成透氣間隙的形成變得不充分。相對於此,在本製造方法中,使用乾燥後的吸濕片來製造拋棄式穿著用物品,所以能夠形成良好的透氣間隙。因此,本製造方法是在薄部形成後才貼附遮罩層。(Effect) If the dispersion of microfibrous cellulose is applied to the non-woven fabric, and the dispersion of the coated part is dried, then when the microfibrous cellulose aggregates are to be formed, the volume of the microfibrous cellulose aggregates will gradually decrease. reduce. Then, along with this, the volume of the portion where the dispersion liquid of the nonwoven fabric is applied also decreases, and a thin portion is automatically formed. The present production method is a method utilizing this phenomenon. For example, it is also possible to form a thin portion on the nonwoven fabric to be a moisture-absorbing sheet by embossing (emboss) processing, and at the same time or thereafter attach the fine fibrous cellulose aggregates to the thin portion, but according to this production method, only A moisture-absorbing sheet can be formed by applying a dispersion of fine fibrous cellulose to a nonwoven fabric to be a moisture-absorbing sheet in a desired pattern. In addition, after the dispersion of microfibrous cellulose is applied to the nonwoven fabric, if it is attached to other members of the disposable wearing article before drying (that is, before the thin part is formed), it may cause the formation of air-permeable gaps. become inadequate. On the other hand, in this manufacturing method, since the disposable wearing article is manufactured using the moisture-absorbing sheet after drying, favorable ventilation gaps can be formed. Therefore, in this manufacturing method, the mask layer is attached after the thin portion is formed.
[發明的效果] 依據本發明,也帶來用以排除濕氣之透氣性、及用以將濕氣效率良好地供給到吸濕材料之透氣性變得優異等的優點。[Effect of the invention] According to the present invention, there are also advantages such as excellent air permeability for removing moisture and excellent air permeability for efficiently supplying moisture to the hygroscopic material.
圖1~圖7示出了黏貼型拋棄式尿布的一例,圖中的符號W示出除了連結帶以外的尿布的全寬,符號L示出尿布的全長,在剖面圖中的點紋部分示出作為接合位於其表面側和背面側的各構成構件的接合手段之黏接劑,其藉由熱熔黏接劑的整面塗佈、液珠塗佈、簾幕式塗佈、關鍵部位塗佈或螺旋狀塗佈、或圖案塗佈(利用凸版方式的熱熔黏接劑的轉印)等而形成,或者,取代或並用地,在彈性構件的固定部分上,藉由梳型噴槍(comb gun)或彈性塗層噴嘴(Sure Wrap)塗佈等來將熱熔黏接劑塗佈在彈性構件的外周面上而形成。作為熱熔黏接劑,沒有特別限定,能夠使用已存在的例如EVA(乙烯-醋酸乙烯共聚合物)系、黏著橡膠系(彈性體系)、烯烴系、聚酯和聚醯胺系等的種類的熱熔黏接劑。作為接合各構成構件之接合手段,能夠使用熱封和超音波密封等的原材料熔接手段。Figures 1 to 7 show an example of an adhesive disposable diaper. The symbol W in the figure shows the full width of the diaper except for the connecting belt, and the symbol L shows the full length of the diaper. Adhesives used as bonding means for bonding components located on the front side and back side thereof, which are applied by full-surface coating, bead coating, curtain coating, and critical part coating of hot-melt adhesives Cloth or spiral coating, or pattern coating (transfer of hot-melt adhesive using letterpress method), etc., or, instead of or in combination, on the fixed part of the elastic member, by comb-type spray gun ( Comb gun) or elastic coating nozzle (Sure Wrap) coating, etc. to coat the hot melt adhesive on the outer peripheral surface of the elastic member. The hot-melt adhesive is not particularly limited, and existing types such as EVA (ethylene-vinyl acetate copolymer)-based, adhesive rubber-based (elastic system), olefin-based, polyester, and polyamide-based can be used. of hot melt adhesives. Material welding means such as heat sealing and ultrasonic sealing can be used as joining means for joining the constituent members.
此黏貼型拋棄式尿布,具有:吸收體56、覆蓋吸收體56的表面側之透液性的頂片30、覆蓋吸收體56的背面側之不透液性樹脂膜11、及覆蓋不透液性樹脂膜11的背面側且構成產品外表面之外裝不織布12。符號F示出比前後方向LD的中央更靠前側之腹側部分,符號B示出比前後方向LD的中央更靠後側之背側部分。This adhesive type disposable diaper has: an
以下,針對各部的原材料和特徵部分依序說明。
(吸收體)
吸收體56,是吸收並保持排泄液體之部分,能夠藉由纖維的集合體來形成。作為此纖維集合體,除了對綿狀紙漿或合成纖維等短纖維進行積纖而成的集合體之外,還可以使用根據需要而對醋酸纖維素等合成纖維的絲束(纖維束)進行開纖而得到的長絲(filament)集合體。作為纖維的單位面積的質量,在對綿狀紙漿或短纖維進行積纖的情況下,例如可以是大約100~300g/m2
,在長絲集合體的情況下,例如可以是大約30~120g/m2
。合成纖維的情況下的細度(纖度)例如為1~16dtex,較佳為1~10dtex,更佳為1~5dtex。在長絲集合體的情況下,長絲也可以是非捲曲纖維,但是較佳為捲曲纖維。捲曲纖維的捲曲度例如可以為每2.54釐米5~75個,較佳為10~50個,更佳為大約15~50個。另外,可以使用均勻地捲曲的捲曲纖維。Hereinafter, the raw materials and characteristics of each part will be explained in order. (Absorbent Body) The
(高吸收性聚合物粒子)
可以使吸收體56的一部分或全部含有高吸收性聚合物粒子。關於高吸收性聚合物粒子,除了「粒子」以外還包含「粉末」。作為高吸收性聚合物粒子,可以直接使用在這種吸收性物品中使用的高吸收性聚合物粒子。高吸收性聚合物粒子的粒徑並不特別限定,但期望是這樣的粒徑:例如在執行使用了500μm的標準篩(JIS Z 8801-1:2006)的篩選(5分鐘的振篩),並對在上述篩選中落下到篩子下方的粒子執行使用了180μm的標準篩(JIS Z 8801-1:2006)的篩選(5分鐘的振篩)時,殘留在500μm的標準篩上的粒子的比例為30重量%以下,且殘留在180μm的標準篩上的粒子的比例為60重量%以上。(superabsorbent polymer particles)
Part or all of the
作為高吸收性聚合物粒子的材料,可以無特別限定地使用,但吸水量為30g/g以上的材料是較佳的。作為高吸收性聚合物粒子,有澱粉類、纖維素類、合成聚合物類等高吸收性聚合物粒子,可以使用澱粉-丙烯酸(鹽)接枝共聚合物、澱粉-丙烯腈共聚物的皂化物、羧甲基纖維素鈉交聯物和丙烯酸(鹽)聚合物等高吸收性聚合物粒子。作為高吸收性聚合物粒子的形狀,較佳為通常使用的粉粒體狀,但是也可以使用其它的形狀。The material of the superabsorbent polymer particles can be used without particular limitation, but a material having a water absorption of 30 g/g or more is preferable. Superabsorbent polymer particles include starch-based, cellulose-based, and synthetic polymer-based superabsorbent polymer particles, and saponification of starch-acrylic acid (salt) graft copolymers and starch-acrylonitrile copolymers can be used. Superabsorbent polymer particles such as carboxymethyl cellulose sodium cross-linked product and acrylic acid (salt) polymer. The shape of the superabsorbent polymer particles is preferably a generally used powder or granular shape, but other shapes may also be used.
作為高吸收性聚合物粒子,較佳為使用一種吸水速度為70秒以下、特別是40秒以下的高吸收性聚合物粒子。如果吸水速度過慢,則容易發生被供給到吸收體56內的液體返回到吸收體56外的所謂的回滲。As the superabsorbent polymer particles, it is preferable to use a superabsorbent polymer particle having a water absorption rate of 70 seconds or less, particularly 40 seconds or less. If the water absorption rate is too slow, so-called rewet in which the liquid supplied into the
又,作為高吸收性聚合物粒子,較佳為使用一種凝膠強度為1000Pa以上的高吸收性聚合物粒子。藉此,即使在作成蓬鬆的吸收體56的情況下,也能夠有效地抑制液體吸收後的黏膩感。Also, as the superabsorbent polymer particles, it is preferable to use one kind of superabsorbent polymer particles having a gel strength of 1000 Pa or more. Thereby, even when the
高吸收性聚合物粒子的單位面積的質量可以對應於根據該吸收體56的用途所要求的吸收量來適當地設定。因此,雖然不能一概而論,但可以設為50~350g/m2
。若聚合物的單位面積的質量小於50g/m2
,則不容易確保吸收量。若聚合物的單位面積的重量超過350g/m2
,則不僅效果飽和,高吸收性聚合物粒子的過多會造成小顆粒摩擦(產生沙沙聲音)的違和感。The mass per unit area of the superabsorbent polymer particles can be appropriately set in accordance with the absorption amount required by the use of the
(包裝片)
為了防止高吸收性聚合物粒子脫出、或為了提高吸收體56的形狀維持性,能夠內置有利用包裝片58包覆吸收體56而成的吸收構件50。作為包裝片58,可以使用薄頁紙(tissue paper)特别是縐紙、不織布、複合層壓不織布、開有小孔的片等。但是,期望是高吸收性聚合物粒子不會脫出的片。在使用不織布來代替縐紙的情況下,特佳為親水性的SMMS(紡黏/熔噴/熔噴/紡黏)不織布,其材質可以使用聚丙烯、聚乙烯/聚丙烯等。期望的纖維單位面積的質量為5~40g/m2
,特別期望是10~30g/m2
。(Packaging Sheet)
此包裝片58,除了如圖3所示,作成以一片包覆整個吸收體56的構造以外,也能夠作成上下2片等的複數片的片體來包覆整個吸收體56,也能夠省略包裝片58。This
(頂片)
頂片30是具有透液性的片,例如能夠使用有孔或無孔的不織布、或者多孔性塑膠片等。又,其中的不織布的原料纖維為何種並不特別限定。例如可以例示出聚乙烯或聚丙烯等烯烴系、聚酯系、聚醯胺系等合成纖維、人造纖維或銅氨纖維等再生纖維、棉等的天然纖維等、或者使用了它們中的兩種以上的混合纖維、複合纖維等。另外,不織布可以藉由任何加工來進行製造。作為加工方法,公知的方法能夠例示出例如水刺(spunlace)法、紡黏法、熱熔黏合法、熔噴法、針刺法、熱風法、點黏法等。例如,若追求柔軟性、懸垂性,則水刺法是較佳的加工方法,若追求蓬鬆性、柔性,則熱熔黏合法是較佳的加工方法。(top sheet)
The
頂片30,在前後方向上自產品前端延伸至後端,在寬度方向WD上延伸至比吸收體56更靠側方,但是當如後述的立起皺褶60的起點位於比吸收體56的側緣更靠寬度方向的中央側時,則對應於需要,可以將頂片30的寬度作成比吸收體56的全寬更短等並進行適當的變形。The
(中間片)
為了使透過頂片30後的液體快速地向吸收體56移動,可以設置液體的透過速度比頂片30更快的中間片(也稱作“第二片”)40。此中間片40用於如下用途:使液體快速地向吸收體移動而提高吸收體的吸收性能,並防止所吸收的液體從吸收體「回滲」的現象。也可以省略中間片40。(intermediate film)
In order to quickly move the liquid passing through the
作為中間片40,能夠例示出與頂片30相同的原材料、或水刺不織布、紡黏不織布、SMS不織布、紙漿不織布、紙漿與人造纖維的混合片、點黏不織布或縐紙。特別是熱風不織布很蓬鬆,因此是較佳的。對於熱風不織布,較佳是使用芯鞘結構的複合纖維,在該情況下,芯所使用的樹脂可以為聚丙烯(PP),但較佳為剛度高的聚酯(PET)。期望的纖維單位面積的質量為17~80g/m2
,特別期望是25~60g/m2
。不織布的原料纖維的粗細較佳為2.0~10dtex。為了使不織布蓬鬆,作為原料纖維的全部或一部分的混合纖維,較佳是使用芯不在中央的偏芯纖維、中空纖維、或偏芯且中空的纖維。As the
圖示例的中間片40比吸收體56的寬度短且配置至中央,也可以設置為遍及整個寬度。又,中間片40也可以設置為遍及尿布的全長,也可以如圖示例般地僅設置在包含排泄位置之中間部分。The
(不透液性樹脂膜)
不透液性樹脂膜11沒有特別限定,只要具有透濕性即可,例如能夠適當地使用藉由下述方法獲得的多微孔性片:將無機填充劑在聚乙烯或聚丙烯等烯烴系樹脂中混煉並成型出片之後,沿單軸或雙軸方向拉伸。不用說明也可知,不透液性樹脂膜11,不包含一種以不織布作為基材以提高防水性之不透液性樹脂膜。(Liquid-impermeable resin film)
The liquid-
不透液性樹脂膜11,期望是在前後方向LD和寬度方向WD上,與吸收體56相同或遍及更廣範圍地延伸,但是當存在有其他遮水構件時等,也能夠對應於需要,作成在前後方向LD和寬度方向WD上不會覆蓋吸收體56的端部之構造。The liquid-
(外裝不織布)
外裝不織布12覆蓋不透液性樹脂膜11的整個背面側,以將製品外表面作成布般的外觀。作為外裝不織布12沒有特別限定,作為原材料纖維,能夠使用例如聚乙烯或聚丙烯等烯烴系、聚酯系、聚醯胺系等合成纖維、人造纖維或銅氨纖維等再生纖維、棉等的天然纖維等,作為加工法,能夠使用水刺法、紡黏法、熱熔黏合法、熱風法、針刺法等。但是自肌膚觸感和強度兼顧的觀點來看,較佳為紡黏不織布或SMS不織布、SMMS不織布等長纖維不織布。除了使用一片不織布以外,也能夠重疊地使用複數片不織布。當後者時,較佳為將不織布彼此藉由熱熔黏接劑來黏接。當使用不織布時,期望的該纖維單位面積的質量為10~50g/m2
,特別期望是15~30g/m2
。(Exterior Nonwoven Fabric) The
外裝不織布12,能夠藉由以適當的圖案來塗佈的熱熔黏接劑等黏接劑、或原材料的熔接來貼合至鄰接於表面側之構件,也就是貼合在圖示例中的後述不透液性樹脂膜11或吸濕片15。The
(立起皺褶) (pulls up)
為了阻止沿著頂片30上往橫向移動的排泄物,所謂的防止側漏,較佳為在表面的寬度方向WD的兩側,設置有在穿著者的肌膚側立起的立起皺褶60。當然也能夠省略立起皺褶60。
In order to stop the excrement that moves laterally along the
當採用立起皺褶60時,其構造沒有特別限定,能夠採用公知的各種構造。圖示例的立起皺褶60,藉由實質上在寬度方向WD上連續的皺摺片62、及以沿著前後方向LD延伸的伸長狀態被固定在此皺摺片62中的細長狀的皺摺彈性構件63所構成。作為此皺摺片62能夠使用撥水性不織布,又作為皺摺彈性構件63能夠使用橡膠線等。彈性構件,除了如圖1和圖2所示般分別設置複數條以外,也能夠分別設置1條。
When the raised gathers 60 are used, the structure is not particularly limited, and various known structures can be employed. The standing gathers 60 of the illustrated example are composed of a
皺摺片62的內表面,在頂片30的側部上具有寬度方向WD的接合起點,從此接合起點起算的寬度方向外側的部分,藉由熱熔黏接劑等而被接合在各側翼部SF的內表面,也就是在圖示例中的不透液性樹脂膜11的側部及位於其寬度方向外側的外裝不織布12的側部。
The inner surface of the
在腿部周圍,比立起皺褶60的接合起點更靠寬度方向內側,於產品前後方向兩端部被固定在頂片30上,但是其間的部分是非固定的自由部分,此自由部分藉由皺摺彈性構件63的收縮力而立起,並成為緊密貼合至身體表面。
Around the legs, the joint starting point of the standing gathers 60 is closer to the inside in the width direction, and both ends in the front and rear direction of the product are fixed on the
(端翼部、側翼部) (end wings, side wings)
圖示例的黏貼型拋棄式尿布,具有一對的端翼部EF和一對的側翼部SF,該一對的端翼部EF分別自吸收體56的前側和後側延伸出來且不具有吸收體56,該一對的側翼部SF也分別自吸收體56的兩方的側緣更靠側方地延伸出來且不具有吸收體56。The adhesive type disposable diaper shown in the figure has a pair of end flaps EF and a pair of side flaps SF, and the pair of end flaps EF extend from the front side and the rear side of the
(平面皺褶)
在各側翼部SF中,固定有以沿著前後方向LD延伸的伸長狀態的由橡膠絲等細長狀彈性構件所構成的側彈性構件64,藉此以各側翼部SF的腿部周圍部分來構成平面皺褶。側彈性構件64,如圖示例,除了設置在皺摺片62的接合部分之中接合起點附近的寬度方向外側的皺摺片62與不透液性樹脂膜11之間以外,也能夠設置在側翼部SF中的不透液性樹脂膜11與外裝不織布12之間。側彈性構件64,除了如圖示例般地在各側設置複數條以外,也能夠在各側僅設置1條。(flat wrinkle)
Each side flap SF is fixed with a side
(連結帶)
在背側部分B中的側翼部SF,分別設置有對於腹側部分F的外表面可拆裝地連結的連結帶13。當穿著尿布時,將連結帶13自腰部的兩側繞到腹側部分F的外表面,並將連結帶13的連結部13A連結至腹側部分F外表面的適當部位。(link belt)
The side flaps SF in the back part B are each provided with a
連結帶13的構造沒有特別限定,在圖示例中,具有:片基材,其由被固定在側翼部SF上的帶安裝部13C、及自此帶安裝部13C突出的帶本體部13B所構成;及,連結部13A,其被設置在此片基材中的帶本體部13B的寬度方向的中間部且相對於腹側;比此連結部13A更靠前端側的部分成為捏持部。The structure of the
作為連結部13A,除了設置機械性緊固件(面緊固件)的鉤材(凸材)外,也可以設置黏接劑層。鉤材在其連結面上具有多個卡合突起,作為卡合突起的形狀,存在(A)日文レ字状、(B)J字状、(C)蘑菇狀、(D)T字狀、(E)雙J字狀(使J字狀的結構背對背地結合而成的形狀)等,但也可以是任意的形状。As the
又,作為形成自帶安裝部13C至帶本體部13B為止之片基材,可以使用不織布、塑膠膜、複合層壓不織布、紙或這些材料的複合材料等,但是,細度為1.0~3.5dtex、單位面積的質量為20~100g/m2
且厚度為1mm以下的紡黏不織布、熱風不織布或水刺不織布是較佳的。Also, as the sheet base material that forms the self-attaching
(靶片)
較佳為,在腹側部分F中的與連結帶13連結的連結部位設置有靶片20,該靶片具有用以使連結變容易的靶部。靶片20,在連結部13A為鉤材的情況下,可以使用在由塑膠膜或不織布構成的片基材的表面上設置有多個能夠供鉤材的卡合突起纏繞(黏扣)的環形線而成的靶片,另外,在連結部13A為黏接材料層的情況下,可以採用富有黏接性這樣的對由表面平滑的塑膠膜構成的片基材的表面實施剝離處理後的靶片。另外,在腹側部分F中的與連結帶13連結的連結部位由不織布構成的情況,例如在具有圖示例的外裝不織布12的情況下,也可以省略靶片20,並使鉤材纏繞於外裝不織布12的纖維而連結。這種情況下,也可以將作為記號的靶片20設在外裝不織布12與不透液性樹脂膜11之間。(target)
Preferably, a
(吸濕片)
如圖8~圖10所示,特徵在於:在不透液性樹脂膜11與外裝不織布12之間設置有吸濕片15。若在不透液性樹脂膜11與外裝不織布12之間設置有這樣的吸濕片15,則透過不透液性樹脂膜11後的濕氣不會在吸濕片15被遮斷,所以穿著時的悶熱防止性不容易降低。再者,藉由微小纖維狀纖維素集合體的高吸濕性,使得相較於構成產品外表面的外裝不織布12或貼身衣物,濕氣更容易被保持在吸濕片15中,所以產品外表面或貼身衣物不容易產生濕黏的觸感。(hygroscopic sheet)
As shown in FIGS. 8 to 10 , it is characterized in that a
特別是,吸濕片15,也如圖11所示,較佳為具有:不織布16,其隔開間隔並重複地形成有在厚度方向上收縮的薄部16t;及,微小纖維狀纖維素集合體17,其附著在前述薄部16t內。薄部16t,除了如圖示例的在吸濕片15的表面和背面兩側具有的低窪之外,也可以是僅在吸濕片15的表面或背面的一方具有的低窪。藉此,吸濕片15,即便被夾在不透液性樹脂膜11與外裝不織布12之間,也能夠在這些不透液性樹脂膜11與吸濕片15的薄部16t之間、或外裝不織布12與吸濕片15的薄部16t之間形成透氣間隙18。藉此,在本吸濕片15中,能夠通過此透氣間隙18並沿著吸濕片15的表面排除濕氣。又,在該過程中,能夠將濕氣效率良好地供給到吸濕原材料也就是微小纖維狀纖維素集合體17,並促使吸濕。In particular, the
吸濕片15,也可以在薄部16t以外具有微小纖維狀纖維素集合體17,但是微小纖維狀纖維素集合體17是硬質的。因此,吸濕片15,較佳為僅在薄部16t中附著有微小纖維狀纖維素集合體17。藉此,在吸濕片15中的薄部16t以外能夠柔軟地變形,並且使用者或穿著者不容易接觸到硬質的薄部16t、或者該硬度(硬質感)不容易影響到肌膚。The
薄部16t,只要以隔開間隔並重複的圖案的方式來形成即可,該圖案沒有特別限定。例如,薄部16t,也可以是如圖8所示的複數個沿著前後方向LD的線狀的薄部16t在寬度方向WD上隔開間隔地排列成縱向條紋狀,也可以是如圖9所示的複數個沿著寬度方向WD的線狀的薄部16t在前後方向LD上隔開間隔地排列成橫向條紋狀。又,薄部16t,也可以是如圖12(a)~(e)所示的點狀,也可以是如圖12(f)所示的斜向格子狀。特別是,若將薄部16t設為條紋狀或格子狀,則透氣間隙18的連續性變高。因此,用以排除濕氣之透氣性、及用以將濕氣效率良好地供給到吸濕材料之透氣性,能夠變得更加優異而為較佳。如這些,當使薄部16t連續成線狀時,除了連續成直線狀也能夠連續成曲線狀或波浪線狀。The
薄部16t的尺寸能夠適當地決定。當薄部16t的配置是條紋狀圖案時,薄部16t的線寬x1,較佳為1.0~4.0mm,特佳為2.0~3.0mm;鄰接的附著部的間隔s1較佳為5~30mm,特佳為10~20mm。又,當薄部16t是點狀圖案時,則薄部16t的直徑d(最長部分的長度),較佳為1.0~4.0mm,特佳為2.0~3.0mm;在寬度方向WD和前後方向LD上鄰接的列的中心(或重心)的間隔s2、s3,較佳為5~25mm,特佳為10~15mm。又,當薄部16t的配置是格子狀圖案時,薄部16t的線寬x2,較佳為1.0~4.0mm,特佳為2.0~3.0mm;格子間隔s4(平行的薄部16t彼此的間隔),較佳為5~30mm,特佳為10~20mm。微小纖維狀纖維素集合體的附著部的尺寸,能夠設為與薄部16t的尺寸相同,或者其以下或其以上。The size of the
構成吸濕片15之不織布16沒有特別限定,但是較佳為具有高的蓬鬆性、優異的塑形性,所以較佳是細度為2~10dtex且單位面積的質量為20~40g/m2
的短纖維不織布。The
為了提升吸濕性,微小纖維狀纖維素的量越多越好,但是若太多則會造成產品不必要地變硬。因此,在薄部16t中的微小纖維狀纖維素的含有量,較佳為0.1~5.0g/m2
,特佳為0.5~3.0g/m2
。In order to improve moisture absorption, the amount of fine fibrous cellulose is as high as possible, but too much can cause the product to become unnecessarily stiff. Therefore, the content of fine fibrous cellulose in the
>製造方法>
例如,吸濕片15,能夠藉由下述方法來製造:藉由壓紋加工來在成為吸濕片15之不織布16上形成薄部16t,同時或在其後將微小纖維狀纖維素集合體17附著到薄部16t。>Manufacturing method>
For example, the moisture-absorbing
又,吸濕片15也可以藉由下一個方法來製造。亦即,若將微小纖維狀纖維素的分散液,以隔開間隔並重複的圖案的方式塗佈在成為吸濕片15之不織布16上,該分散液會浸透在不織布16的纖維間。然後,該分散液乾燥後,會在分散液的塗佈部分形成薄部16t,並且在薄部16t內形成微小纖維狀纖維素集合體17。亦即,若將微小纖維狀纖維素的分散液塗佈在不織布16上之後,使塗佈部分的分散液乾燥,則當微小纖維狀纖維素集合體17要形成時,微小纖維狀纖維素集合體17的體積會逐漸地減少。然後,伴隨於此,不織布16的分散液的塗佈部分的體積也會減少,而自動地形成薄部16t。本製造方法為利用此現象的方法。依據此方法,將微小纖維狀纖維素的分散液以想要的圖案的方式塗佈在成為吸濕片15之不織布16上,僅加以乾燥就能夠形成吸濕片15。Moreover, the moisture-
其中,依據此製造方法,將微小纖維狀纖維素的分散液塗佈在不織布16上之後,若在乾燥前(也就是薄部16t形成前)就貼附其他片,則可能透氣間隙18不會形成。因此,當貼附本吸濕片15和其他構件時,期望在薄部16t形成後才貼附其他構件。例如,即便將微小纖維狀纖維素的分散液塗佈在中間片40或外裝不織布12這種既有的不織布16上,原理上也可以形成薄部16t。但是,會產生在微小纖維狀纖維素的分散液乾燥後才可以貼附其他構件的必要性,所以不適用於在高速的生產線上的製造。因此,較佳為如圖示例,在其他途徑預先製造專用的吸濕片15,然後將該吸濕片15安裝在適當的構件之間,藉此製造拋棄式穿著用物品。相對於此,當藉由壓紋加工來形成薄部16t時,能夠在塗佈微小纖維狀纖維素的分散液之前,就將其他構件貼附在成為吸濕片15之不織布16上。Among them, according to this manufacturing method, after the dispersion liquid of fine fibrous cellulose is coated on the
當藉由微小纖維狀纖維素的分散液的塗佈來形成微小纖維狀纖維素集合體17的附著部時,微小纖維狀纖維素的分散液的濃度(質量/容量),較佳為0.1~10%,更佳為1.0~5.0%,特佳為1.5~3.0%。When the attachment portion of the
微小纖維狀纖維素的分散液的B型黏度(60rpm、20℃),例如是700cps以下,較佳為200cps以下,更佳為50cps以下。這樣一來,將微小纖維狀纖維素的分散液的B型黏度抑制為低,藉此可將微小纖維狀纖維素均勻地施加到不織布。The type B viscosity (60 rpm, 20° C.) of the microfibrous cellulose dispersion is, for example, 700 cps or less, preferably 200 cps or less, more preferably 50 cps or less. In this way, the B-type viscosity of the dispersion liquid of microfibrous cellulose is suppressed to be low, whereby the microfibrous cellulose can be uniformly applied to the nonwoven fabric.
微小纖維狀纖維素的分散液的施加,除了對於對象面之噴霧以外,也能夠使用凸版方式等轉印方式。For the application of the dispersion liquid of fine fibrous cellulose, a transfer method such as a letterpress method can also be used besides spraying on the target surface.
作為可用於微小纖維狀纖維素的製造之紙漿纖維,舉例有闊葉樹紙漿(LBKP)、針葉樹紙漿(NBKP)等的化學紙漿、漂白熱磨機械紙漿(BTMP)、磨石磨木紙漿(SGP)、加壓磨石磨木紙漿(PGW)、精製磨木紙漿(RGP)、化學磨木紙漿(CGP)、熱磨磨木紙漿(TGP)、磨木紙漿(GP)、熱磨機械紙漿(TMP)、化學熱磨機械紙漿(CTMP)、精製機械紙漿(RMP)等機械紙漿、由茶色廢紙、牛皮紙信封廢紙、雜誌廢紙、報紙廢紙、傳單廢紙、辦公室廢紙、紙箱廢紙、上等白色廢紙、肯特廢紙、仿製廢紙、證卷廢紙、木質廢紙等製造的廢紙紙漿、將廢紙紙漿加以脫墨處理後的脫墨紙漿(DIP)等。只要不損及作為目的之效果,這些紙漿也可以單獨地使用,也可以組合複數種而使用。進一步,也可以使用對於上述紙漿纖維施加羧甲基化等的化學處理而成的微小纖維狀纖維素。Examples of pulp fibers that can be used in the production of fine fibrous cellulose include chemical pulp such as hardwood pulp (LBKP) and softwood pulp (NBKP), bleached thermomechanical pulp (BTMP), groundwood pulp (SGP), Pressurized Stone Groundwood Pulp (PGW), Refined Groundwood Pulp (RGP), Chemical Groundwood Pulp (CGP), Thermal Groundwood Pulp (TGP), Groundwood Pulp (GP), Thermomechanical Pulp (TMP) , chemical thermomechanical pulp (CTMP), refined mechanical pulp (RMP) and other mechanical pulp, brown waste paper, kraft envelope waste paper, magazine waste paper, newspaper waste paper, leaflet waste paper, office waste paper, carton waste paper, Waste paper pulp made of fine white waste paper, Kent waste paper, imitation waste paper, certificate waste paper, wood waste paper, etc., deinked pulp (DIP) after deinking the waste paper pulp, etc. These pulps may be used alone or in combination of a plurality of them as long as the intended effect is not impaired. Furthermore, microfibrous cellulose obtained by subjecting the aforementioned pulp fibers to chemical treatment such as carboxymethylation may also be used.
作為微小纖維狀纖維素的製造方法,舉例有高壓均質機法、微射流機法、研磨機磨碎法、珠磨機凍結粉碎法、超音波開纖法等機械性手法,但是不限定於這些方法。又,藉由TEMPO(四甲基哌啶氮氧化物,2,2,6,6-Tetramethylpiperidinooxy)氧化處理、磷酸酯化處理、酸處理等的並用來促進微小纖維化。As a method for producing fine fibrous cellulose, mechanical methods such as a high-pressure homogenizer method, a microfluidizer method, a mill grinding method, a bead mill freezing pulverization method, and an ultrasonic fiber opening method are exemplified, but they are not limited to these method. In addition, TEMPO (Tetramethylpiperidinoxy) oxidation treatment, phosphorylation treatment, acid treatment, etc. are used to promote microfibrilization.
>其他>
上述吸濕片15,也能夠單獨地使用,也能夠安裝到拋棄式穿著用物品中的其他部位來使用。使用時,也可以在吸濕片15的表面和背面的任一方或兩方上鄰接有不透氣性構件或低透氣性構件,也可以在表面和背面的兩方上鄰接有透氣性原材料、或在表面和背面的任一方上沒有鄰接的構件。>Others>
The above-mentioned moisture-absorbing
例如,也能夠如圖9所示的在腰部等的構件之間設置吸濕片15,也能夠如圖10所示的在靶片20的背面側(例如靶片20與外裝不織布12之間、或外裝不織布12與不透液性樹脂膜11之間)設置吸濕片15。For example, as shown in Figure 9, a
特別是,為了防止穿著時的悶熱,若以具有與穿著者的肌膚接觸的透氣性的肌膚接觸層的背面側鄰接的部分(也可以整體與肌膚接觸層的背面側鄰接)的方式設置吸濕片15,則對穿著時在拋棄式穿著用物品的內部的溼氣效率良好地進行吸濕、或排除到外部,藉此能夠防止悶熱。例如,在圖9所示的例子中,當在腰部設置吸濕片15時,能夠將吸濕片15設置在從吸收體56與不透液性樹脂膜11之間、直到頂片30與不透液性樹脂膜11之間。In particular, in order to prevent stuffiness during wearing, if there is a part adjacent to the back side of the air-permeable skin-contact layer that contacts the wearer's skin (it may also be adjacent to the back side of the skin-contact layer as a whole), the moisture-absorbing The
>說明書中的用語的說明> 只要在說明書中無特別地記載,則說明書中的以下用語具有如下含義。> Explanation of terms in the manual > Unless otherwise stated in the specification, the following terms in the specification have the following meanings.
・“前後方向”是指在圖中的符號LD表示的方向(縱方向),“寬度方向”是指在圖中的符號WD表示的方向(左右方向),前後方向與寬度方向正交。・The "front-rear direction" refers to the direction indicated by symbol LD in the figure (longitudinal direction), the "width direction" refers to the direction indicated by symbol WD in the figure (left-right direction), and the front-rear direction is perpendicular to the width direction.
・「MD方向(機械加工方向(Machine Direction)」及「CD方向」,是指在製造設備中的流動方向(MD方向)及與其正交的橫方向(CD方向),依據產品的部分來將任一方設為前後方向且將另一方設為寬度方向。又,不織布的MD方向,是不織布的纖維定向的方向。纖維定向,是指不織布的纖維的延伸方向,能夠藉由例如依據TAPPI(美國紙漿與造紙工業技術協會,Technical Association of the Pulp and Paper Industry)標準法T481的零距離拉伸強度的纖維定向性試驗法之測定方法、及依據前後方向及寬度方向的拉伸強度比來決定纖維定向的方向之簡單的測定方法來判別纖維定向。・"MD direction (Machine Direction)" and "CD direction" refer to the flow direction (MD direction) in the manufacturing equipment and the transverse direction (CD direction) perpendicular to it, and are divided according to the part of the product Either side is set as the front-rear direction and the other side is set as the width direction. Again, the MD direction of the non-woven fabric is the direction in which the fibers of the non-woven fabric are oriented. The fiber orientation refers to the extending direction of the fibers of the non-woven fabric, which can be obtained by, for example, according to TAPPI (USA Pulp and Paper Industry Technical Association, Technical Association of the Pulp and Paper Industry) standard method T481, the method of measuring the zero-distance tensile strength of the fiber orientation test method, and the determination of the fiber according to the tensile strength ratio in the front-back direction and the width direction A simple method for determining the direction of orientation to determine fiber orientation.
・「表面側」是指當穿著時,靠近穿著者的肌膚的一側;「背面側」是指當穿著時,遠離穿著者的肌膚的一側。・The "front side" refers to the side close to the wearer's skin when worn; the "back side" refers to the side away from the wearer's skin when worn.
・「表面」是指構件的一面,該面當穿著時,靠近穿著者的肌膚;「背面」是指構件的一面,該面當穿著時,遠離穿著者的肌膚。・"Front" refers to the side of the member that is close to the wearer's skin when worn; "back" refers to the side of the member that is away from the wearer's skin when worn.
・“伸長率”是指將自然長度設為100%時的值。例如,伸長率為200%是指伸長倍率為2倍的相同意義。・"Elongation" refers to the value when the natural length is 100%. For example, an elongation of 200% means that the elongation ratio is doubled.
・“凝膠強度”如下這樣測定。在49.0g的人工尿(2wt%的尿素、0.8wt%的氯化鈉、0.03wt%的二水氯化鈣、0.08wt%的七水硫酸鎂、及97.09wt%的離子交換水)中,加入1.0g的高吸收性聚合物並利用攪拌機進行攪拌。將生成的凝膠在40℃、60%RH的恒溫恒濕槽內放置3個小時後恢復到常溫,利用凝乳計(I.techno Engineering公司製造:Curdmeter-MAX ME-500)測量凝膠強度。・The "gel strength" was measured as follows. In 49.0g of artificial urine (2wt% urea, 0.8wt% sodium chloride, 0.03wt% calcium chloride dihydrate, 0.08wt% magnesium sulfate heptahydrate, and 97.09wt% ion-exchanged water), Add 1.0 g of superabsorbent polymer and stir with a stirrer. The resulting gel was placed in a constant temperature and humidity chamber at 40°C and 60% RH for 3 hours, then returned to normal temperature, and the gel strength was measured with a curd meter (manufactured by I.techno Engineering: Curdmeter-MAX ME-500) .
・“單位面積的質量”如下述這樣測定。將樣品或試驗片預備烘乾後放置到標準狀態(試驗場所的溫度為23±1℃、相對濕度為50±2%)的試驗室或者裝置內,使其變成恒量的狀態。預備烘乾是指使樣品或試驗片在溫度為100℃的環境中成為恒量。另外,關於法定水分率為0.0%的纖維,也可以不進行預備烘乾。使用樣品採取用的模板(100mm×100mm),從變成恒量的狀態下的試驗片切取100mm×100mm的尺寸的樣品。測量樣品的質量,並乘上100倍來計算出每平方公尺的質量作為單位面積的質量。・The "mass per unit area" was measured as follows. Place the sample or test piece in a standard state (the temperature of the test site is 23±1°C and the relative humidity is 50±2%) in the laboratory or device after pre-drying to make it into a constant state. Preliminary drying refers to making the sample or test piece constant in an environment with a temperature of 100°C. In addition, pre-drying does not need to be performed about the fiber whose legal moisture content is 0.0%. Using a template (100 mm×100 mm) for sample collection, a sample having a size of 100 mm×100 mm was cut out from the test piece in a constant weight state. Measure the mass of the sample and multiply it by 100 to calculate the mass per square meter as the mass per unit area.
・“厚度”是採用自動厚度測定器(KES-G5便攜壓縮測量程式),在負荷為0.098N/cm2 、加壓面積為2cm2 的條件下自動測定。在孔及其周圍的突出部以外的部分,檢測有孔不織布的厚度。・"Thickness" is automatically measured with an automatic thickness measuring device (KES-G5 portable compression measurement program) under the conditions of a load of 0.098N/cm 2 and a compression area of 2cm 2 . The thickness of the perforated nonwoven fabric is detected at the portion other than the hole and the surrounding protrusion.
・“吸水量”是根據JIS K7223-1996「高吸水性樹脂的吸水量試驗方法」來測定的。・"Water absorption" is measured in accordance with JIS K7223-1996 "Test method for water absorption of superabsorbent resins".
・“吸水速度”為使用2g高吸水性聚合物和50g生理鹽水來執行JIS K 7224-1996「高吸水性樹脂的吸水速度試驗方法」時的「至終點為止的時間」。・"Water absorption speed" is "time to end point" when JIS K 7224-1996 "Test method for water absorption speed of superabsorbent resin" is carried out using 2 g of super absorbent polymer and 50 g of physiological saline.
「微小纖維狀纖維素」,是指從紙漿等的植物中取出的細微的纖維素纖維或其纖維束,一般是指平均纖維寬度為奈米尺寸(1~1000nm)的纖維狀纖維素,其平均纖維寬度(median size,中值的直徑),較佳為100nm以下(一般被稱為纖維素奈米纖維(CNF,Cellulose Nanofiber)),特佳為10~60nm。"Fine fibrous cellulose" refers to fine cellulose fibers or fiber bundles extracted from plants such as pulp, and generally refers to fibrous cellulose with an average fiber width of nanometer size (1 to 1000 nm). The average fiber width (median size, median diameter) is preferably 100 nm or less (generally called cellulose nanofiber (CNF, Cellulose Nanofiber)), particularly preferably 10-60 nm.
微小纖維狀纖維素的「平均纖維寬度」能夠利用以下方法來測定。亦即,首先,將100ml的固體成分濃度為0.01~0.1質量%的微小纖維狀纖維素的水性分散液,利用Teflon(註冊商標)製造的薄膜過濾器加以過濾,利用100ml的乙醇進行一次的溶劑置換,利用20ml的t-丁醇進行三次的溶劑置換。接著,進行凍結乾燥並進行鋨的塗佈,以作成樣品。針對此樣品,對應於構成纖維的寬度,使用電子顯微鏡的SEM圖像以5000倍、10000倍或30000倍的任一倍率(在本實施例中為30000倍)來實行觀察。具體來說,在觀察圖像中拉出兩條對角線,並任意地拉出三條通過對角線的交點的直線。進一步,以目測來測量與此三條直線交錯的合計100條的棒狀纖維。再者,將測量值的中值的直徑(median size)作為平均纖維寬度。The "average fiber width" of microfibrous cellulose can be measured by the following method. That is, first, 100 ml of an aqueous dispersion of microfibrous cellulose having a solid content concentration of 0.01 to 0.1% by mass is filtered through a membrane filter manufactured by Teflon (registered trademark), and solvent removal is carried out once with 100 ml of ethanol. For replacement, solvent replacement was performed three times with 20 ml of t-butanol. Next, freeze-drying and coating with osmium were performed to prepare samples. This sample was observed using a SEM image of an electron microscope at any magnification of 5000 times, 10000 times or 30000 times (in this example, 30000 times) according to the width of the constituent fibers. Specifically, two diagonal lines are drawn in the observation image, and three straight lines passing through the intersection points of the diagonal lines are drawn arbitrarily. Furthermore, a total of 100 rod-shaped fibers intersecting these three straight lines were measured visually. In addition, let the diameter (median size) of the median value of the measured value be the average fiber width.
・“展開狀態”是指沒有收縮或鬆弛且平坦地伸展開的狀態。・The "expanded state" refers to a state in which it is stretched flat without contraction or slack.
・各部分的尺寸只要沒有特別記載,則是指展開狀態下而不是自然長狀態下的尺寸。・The dimensions of each part refer to the unfolded state, not the naturally long state, unless otherwise specified.
・在沒有關於試驗或測定中的環境條件的記載的情況下,該試驗或測定是在標準狀態(試驗場所的溫度為23±1℃、相對濕度為50±2%)的試驗室或裝置內進行的。・Unless there is no description about the environmental conditions in the test or measurement, the test or measurement is carried out in a test room or device under standard conditions (the temperature of the test site is 23±1°C and the relative humidity is 50±2%) ongoing.
[產業上的可利用性] 本發明除了能夠適用於上述例子那樣的黏貼型拋棄式尿布之外,也能夠用於短褲型拋棄式尿布、襯墊型拋棄式尿布等全部的拋棄式尿布,又,不用說明也可知,也能夠適用於生理用衛生棉等其他的吸收性物品。[industrial availability] The present invention can be applied to all disposable diapers, such as pants-type disposable diapers and liner-type disposable diapers, in addition to adhesive-type disposable diapers such as the above-mentioned examples. Applicable to other absorbent articles such as sanitary napkins.
11:不透液性樹脂膜
12:外裝不織布
13:連結帶
13A:連結部
13B:帶本體部
13C:帶安裝部
15:吸濕片
16:不織布
16t:薄部
17:微小纖維狀纖維素集合體
18:透氣間隙
20:靶片
30:頂片
40:中間片
50:吸收構件
56:吸收體
58:包裝片
60:立起皺褶
62:皺摺片
63:皺摺彈性構件
64:側彈性構件
B:背側部分
F:腹側部分
L:尿布的全長
SF:側翼部
EF:端翼部
WD:寬度方向
LD:前後方向
s1:鄰接的附著部的間隔
s2,s3:在寬度方向和前後方向上鄰接的列的中心(或重心)的間隔
s4:格子間隔
x1,x2:薄部16t的線寬
d:薄部的直徑
5-5,6-6,7-7,8-8,9-9:剖面線11: Liquid-impermeable resin film
12: Outer non-woven fabric
13: Connecting
圖1是示出尿布展開狀態下的黏貼型拋棄式尿布的內表面的俯視圖。 圖2是示出尿布展開狀態下的黏貼型拋棄式尿布的外表面的俯視圖。 圖3是沿圖1中的6-6線的剖視圖。 圖4是沿圖1中的7-7線的剖視圖。 圖5是沿圖1中的8-8線的剖視圖。 圖6是沿圖1中的9-9線的剖視圖。 圖7是沿圖1中的5-5線的剖視圖。 圖8是示出尿布展開狀態下的主要部分的俯視圖。 圖9是示出尿布展開狀態下的主要部分的俯視圖。 圖10是示出尿布展開狀態下的主要部分的俯視圖。 圖11是放大地示出吸濕片的剖面圖。 圖12是示出薄部(微小纖維狀纖維素的附著部)的各種圖案的俯視圖。Fig. 1 is a plan view showing an inner surface of an adhesive type disposable diaper in a state where the diaper is unfolded. Fig. 2 is a plan view showing the outer surface of the adhesive-type disposable diaper in a state where the diaper is unfolded. Fig. 3 is a sectional view along line 6-6 in Fig. 1 . Fig. 4 is a sectional view along line 7-7 in Fig. 1 . Fig. 5 is a cross-sectional view along line 8-8 in Fig. 1 . Fig. 6 is a sectional view along line 9-9 in Fig. 1 . Fig. 7 is a sectional view along line 5-5 in Fig. 1 . Fig. 8 is a plan view showing main parts in a state where the diaper is unfolded. Fig. 9 is a plan view showing main parts in a state where the diaper is unfolded. Fig. 10 is a plan view showing main parts in a state where the diaper is unfolded. Fig. 11 is an enlarged cross-sectional view showing a moisture-absorbing sheet. Fig. 12 is a plan view showing various patterns of thin portions (attached portions of microfibrous cellulose).
國內寄存資訊 (請依寄存機構、日期、號碼順序註記) 無Domestic deposit information (please note in order of depositor, date, and number) none
國外寄存資訊 (請依寄存國家、機構、日期、號碼順序註記) 無Overseas storage information (please note in order of storage country, organization, date, and number) none
11:不透液性樹脂膜 11: Liquid-impermeable resin film
12:外裝不織布 12: Outer non-woven fabric
15:吸濕片 15: Hygroscopic sheet
16:不織布 16: non-woven fabric
16t:薄部 16t: thin part
17:微小纖維狀纖維素集合體 17: Microfibrous cellulose aggregates
18:透氣間隙 18:Breathable gap
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019-054890 | 2019-03-22 | ||
JP2019054890A JP2020151352A (en) | 2019-03-22 | 2019-03-22 | Moisture-absorbing sheet, disposable wearing article and manufacturing method of the same |
Publications (2)
Publication Number | Publication Date |
---|---|
TW202034881A TW202034881A (en) | 2020-10-01 |
TWI805894B true TWI805894B (en) | 2023-06-21 |
Family
ID=72556708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW109102075A TWI805894B (en) | 2019-03-22 | 2020-01-21 | Hygroscopic sheet, disposable wearing article and manufacturing method thereof |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2020151352A (en) |
CN (1) | CN113518716B (en) |
TW (1) | TWI805894B (en) |
WO (1) | WO2020195096A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114305879A (en) * | 2020-09-30 | 2022-04-12 | 尤妮佳股份有限公司 | Pants-type absorbent article |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001096654A (en) * | 1999-09-29 | 2001-04-10 | Nippon Kyushutai Gijutsu Kenkyusho:Kk | Water absorbable composite material surface-covered by fibrillated hot melt, manufacturing method therefor, and absorber article |
TW200912070A (en) * | 2007-03-30 | 2009-03-16 | Uni Charm Corp | Stretchable nonwoven fabric |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3881488A (en) * | 1971-11-01 | 1975-05-06 | Int Paper Co | Disposable diaper |
JPH10204765A (en) * | 1996-10-17 | 1998-08-04 | Corovin Gmbh | Waterproof multi-layered nonwoven fabric having good vapor permeability and reduced in weight and its production |
EP1065301A1 (en) * | 1999-07-01 | 2001-01-03 | MELITTA HAUSHALTSPRODUKTE GmbH & Co. Kommanditgesellschaft | Reactive fibrous cellulosic coagulates |
JP2001212899A (en) * | 2000-02-01 | 2001-08-07 | Mitsui Chemicals Inc | Decomposable highly water-absorbing composite |
JP5011220B2 (en) * | 2008-06-26 | 2012-08-29 | 花王株式会社 | Telescopic sheet |
JP5213785B2 (en) * | 2009-04-01 | 2013-06-19 | 大王製紙株式会社 | Manufacturing method of composite sheet |
JP6093002B1 (en) * | 2015-12-28 | 2017-03-08 | ユニ・チャーム株式会社 | Nonwoven fabric for exterior sheet of absorbent article, and absorbent article comprising the nonwoven fabric as an exterior sheet |
JP6442098B1 (en) * | 2018-03-29 | 2018-12-19 | 大王製紙株式会社 | Absorbent article and manufacturing method thereof |
-
2019
- 2019-03-22 JP JP2019054890A patent/JP2020151352A/en active Pending
-
2020
- 2020-01-21 TW TW109102075A patent/TWI805894B/en active
- 2020-01-27 WO PCT/JP2020/002692 patent/WO2020195096A1/en active Application Filing
- 2020-01-27 CN CN202080018294.4A patent/CN113518716B/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001096654A (en) * | 1999-09-29 | 2001-04-10 | Nippon Kyushutai Gijutsu Kenkyusho:Kk | Water absorbable composite material surface-covered by fibrillated hot melt, manufacturing method therefor, and absorber article |
TW200912070A (en) * | 2007-03-30 | 2009-03-16 | Uni Charm Corp | Stretchable nonwoven fabric |
Also Published As
Publication number | Publication date |
---|---|
JP2020151352A (en) | 2020-09-24 |
CN113518716B (en) | 2024-04-02 |
WO2020195096A1 (en) | 2020-10-01 |
CN113518716A (en) | 2021-10-19 |
TW202034881A (en) | 2020-10-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6514253B2 (en) | Eco-friendly absorbent structure | |
JP7430639B2 (en) | Top sheet containing natural fibers with good mechanical strength | |
CN111787898B (en) | Absorbent article | |
US7855314B2 (en) | Absorber and absorbent article | |
CN105142589B (en) | Stretchable structure of absorbent article and method for manufacturing stretchable structure of absorbent article | |
JPH11506503A (en) | Articles with soft absorbent pulp sheets | |
TW201733547A (en) | Expanding/contracting structure of absorbent article and manufacturing method therefor | |
JP2009532590A (en) | Hydroentangled nonwoven fabric, method for producing the same, and absorbent article comprising hydroentangled nonwoven fabric | |
JP2006263074A (en) | Sprinkling device of particulate matter, sprinkling method of particular matter, and absorbent article | |
CN110944613B (en) | Absorbent article | |
TWI805894B (en) | Hygroscopic sheet, disposable wearing article and manufacturing method thereof | |
JP7187352B2 (en) | absorbent article | |
JP2020137688A5 (en) | ||
CN112533570A (en) | Absorbent article | |
JP2020151352A5 (en) | ||
WO2020195095A1 (en) | Connected disposable wearable article | |
JP6740310B2 (en) | Articulated disposable wearable article | |
JP6740311B2 (en) | Absorbent article | |
TWI837420B (en) | Functional sheets, absorbent articles containing the functional sheets, and methods of manufacturing the same | |
RU2771693C1 (en) | Absorbent product | |
JP6740309B2 (en) | Sheet member having irregularities, absorbent article including the same, and manufacturing method thereof | |
JP7049154B2 (en) | Disposable wear items | |
JP2020151351A5 (en) | ||
KR20220159356A (en) | absorbent article |