JPS62282003A - Back sheet for disposable diaper and its production - Google Patents
Back sheet for disposable diaper and its productionInfo
- Publication number
- JPS62282003A JPS62282003A JP61123265A JP12326586A JPS62282003A JP S62282003 A JPS62282003 A JP S62282003A JP 61123265 A JP61123265 A JP 61123265A JP 12326586 A JP12326586 A JP 12326586A JP S62282003 A JPS62282003 A JP S62282003A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- stretching
- weight
- parts
- stretched
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 claims description 30
- 230000035699 permeability Effects 0.000 claims description 22
- 229920005672 polyolefin resin Polymers 0.000 claims description 14
- -1 fatty acid ester Chemical class 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 12
- 229920002545 silicone oil Polymers 0.000 claims description 12
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 10
- 239000000194 fatty acid Substances 0.000 claims description 10
- 229930195729 fatty acid Natural products 0.000 claims description 10
- 239000004094 surface-active agent Substances 0.000 claims description 7
- 229920000098 polyolefin Polymers 0.000 claims description 4
- 230000000052 comparative effect Effects 0.000 description 23
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 10
- 230000000704 physical effect Effects 0.000 description 10
- 238000002156 mixing Methods 0.000 description 8
- 229920000092 linear low density polyethylene Polymers 0.000 description 7
- 239000004707 linear low-density polyethylene Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910001868 water Inorganic materials 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000011342 resin composition Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 235000006693 Cassia laevigata Nutrition 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 241000735631 Senna pendula Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920000223 polyglycerol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229940124513 senna glycoside Drugs 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
３、発明の詳細な説明
（発明の技術分野）
本発明は特に柔軟性、引張・引裂き強度に優れた蒸気透
過性かつ液不透過性の使−捨ておむつ用バックシート及
びその製造方法に関する。Detailed Description of the Invention 3. Detailed Description of the Invention (Technical Field of the Invention) The present invention provides a vapor-permeable and liquid-impermeable backsheet for disposable diapers that has particularly excellent flexibility and tensile/tear strength. and its manufacturing method.
（従来稗術） 。(Conventional technique).
近年、主に液透過性シート、液吸収体および液不透過性
のバックシートより構成された使い捨てお９つは、手軽
で増り扱いが容易なことから、その普及が著しい。この
ような使い捨ておむつ用、バックシートとしては、＃不
透蝉性かつ蒸気透過性を有することは勿論、そｆ？ｔｉ
か透湿性、柔軟性、引張・引裂強度などの機能が要求さ
れる。従来、使い捨ておむつのバックシートに関しては
、例えばポリオレフィンと硫酸バリウムよりなる樹脂組
成物を溶融して製膜後に延伸したシート（特開昭６０−
１８５８０３号）、ポリオレフィンと充填剤および液状
またはワックス状の炭化水素重合体よりなる組成物のフ
ィルムを延伸して微細孔を生じせしめたフィルム１Ｍ昭
５８−１４９３０′５号）、或いは形状および物性を特
定したシート（％開閉５７−２０５５０５号、実開昭５
９−６９９０６号）等が提案されている。In recent years, disposable diapers, which are mainly composed of a liquid-permeable sheet, a liquid absorber, and a liquid-impermeable backsheet, have become extremely popular because they are convenient and easy to handle. As a backsheet for such disposable diapers, it is of course impermeable and vapor permeable. Ti
Functions such as moisture permeability, flexibility, and tensile/tear strength are required. Conventionally, for back sheets of disposable diapers, for example, a sheet made by melting a resin composition consisting of polyolefin and barium sulfate, forming a film, and then stretching it (Japanese Patent Application Laid-Open No. 1983-1999)
No. 185803), a film made by stretching a film of a composition consisting of a polyolefin, a filler, and a liquid or waxy hydrocarbon polymer to create micropores (1M No. 14930'5), or a film with a shape and physical properties. Identified sheet (% open/close No. 57-205505, Utsukai Showa 5
No. 9-69906) etc. have been proposed.
しかしながら、上記の如き提案された使い捨ておむつの
バックシートも、その要求される全ての機能を満足する
ものではない。％に柔軟性を付与した使い捨ておむつの
バックシートは、一般に引張および引裂強度が相対的に
弱くなるため、実用上におりて破損する問題を有する。However, the backsheet of the disposable diaper proposed above does not satisfy all the required functions. A back sheet of a disposable diaper that has been given flexibility to a certain extent generally has a relatively weak tensile and tear strength, and therefore has the problem of breakage in practical use.
（発明が解決しようとする課題）
したがって、本発明の目的は上記した問題点に鑑み、液
不透過性かつ蒸気透過性や柔軟性と共に強度等の物性、
特に幅方向に対する引裂強度に優れた多孔性シートであ
る使い捨ておむつ用バックシートを提供することにある
。(Problems to be Solved by the Invention) Therefore, in view of the above problems, the object of the present invention is to improve physical properties such as liquid impermeability, vapor permeability, flexibility, strength, etc.
The object of the present invention is to provide a backsheet for disposable diapers, which is a porous sheet with excellent tear strength particularly in the width direction.
（１５１題を解決するための手段）
本発明者等は上記課題を解決するために鋭意検討した結
果、特定したポリオレフィン樹脂組成物のシート状物を
２軸延伸して得られる多孔性シートが、使い捨ておむつ
用バックシートとして好適な所望の物性を有することを
見い出し、本発明を提案するに至った。即ち、本発明は
通気度５００〜５０００秒／１ｏｏｃｃ、透湿度１００
０〜６０００１１／ｄ・２４ ｈｒ ＊引張強度５Ｏ−
４００Ｋｆ／ｄ、引裂強度５０〜２５０＃ 、柔軟度２
０〜６０■および厚さ２０〜８０μであるポリオレフィ
ン製の２軸延伸シートよりなる使す捨ておむつ用バック
シートである。このような本発明の使い捨ておむつ用バ
ックシートはポリオレフィン樹脂１００重量部、充填剤
５０〜４００重量部およびシリコーン油及び／又はポリ
グリセリン脂肪酸エステル界面活性剤０．１〜１０重量
部よりなる組成物をシート状に成形後、それぞれ延伸倍
率１，１〜２，５倍で１軸および２軸方向に延伸する方
法により得ることが小乗る。(Means for Solving Problem 151) As a result of intensive studies to solve the above problems, the present inventors found that a porous sheet obtained by biaxially stretching a sheet-like material of a specified polyolefin resin composition. It was discovered that the material has desired physical properties suitable for use as a backsheet for disposable diapers, and the present invention was proposed. That is, the present invention has an air permeability of 500 to 5000 seconds/1oocc and a moisture permeability of 100
0-600011/d・24 hr *Tensile strength 5O-
400Kf/d, tear strength 50-250#, flexibility 2
This is a backsheet for disposable diapers made of a biaxially stretched polyolefin sheet having a thickness of 0 to 60μ and a thickness of 20 to 80μ. Such a backsheet for disposable diapers of the present invention contains a composition consisting of 100 parts by weight of a polyolefin resin, 50 to 400 parts by weight of a filler, and 0.1 to 10 parts by weight of a silicone oil and/or a polyglycerol fatty acid ester surfactant. After forming into a sheet, it can be obtained by stretching in uniaxial and biaxial directions at a stretching ratio of 1.1 to 2.5 times, respectively.
本発明の使い捨ておむつ用バックシートは、詳しくはＪ
ＩＳ Ｐ８１１７法に基づ〈通気度が５００〜５０００
秒／１００ｃｃ、好ましくは６００〜３０００秒／１０
０ＣＣ，’ Ｊ’ｌ８Ｚ０２０８ 法に基づ゛〈温度
４０℃および相対湿度９０％での透湿度が１００６〜６
ｏｏｏｙ／ｒｒ？ ・２’４ ｈｒ 、好ましくは５０
０’０二５０００１１’／ｍ”２４ｈｒ、’ＪＩＢ Ｆ
８１１５法に基づく引張強度が５０〜ＡＯｔＪＫＩ／ａ
１１．好ましく′はし０〜３８０Ｋｇン一、 ＪＩ８Ｌ
１０８５Ａ−１法に基づく引裂強度゛が５〇二２５０９
．好ましくは７０〜２３０＃、ＪＩＢ Ｌ１０７９ ク
ラーク法に基づく柔軟度が２０〜６０博、好ましくは２
０〜５０■および厚さが２０〜８０μ、好ましくは２０
〜６０μであることが重要である。即ち、使込捨ておむ
つ用バックシートとして、該シートの通気曜が５００．
０秒／１ｏｏｃｃより大きいか、透湿度が１０００１１
／ｎｌ・２４ ｈｒより小さｂ場合では、使す捨ておむ
つ装着時におけるむれの防止が不十分であり、また通気
度が５００秒／１ｏｏｃｃより小さいか、透湿度が６０
００ＩＩ／−・２４ｈｒ より大き込場合では液漏れ
が懸念されるし、同時に引裂強度等の物性が低下して好
ましくない。また、引張強度が５０に＃／ｃｄより小さ
いか、引裂強度が５０Ｉより小さい場合では破れ易く、
逆に引張強度および引裂強度は高す方が望ましいが、引
張強度が４００−／−より大きいか、引裂強度ｂｔ２５
０１より太き“い場合では、透湿性が低下するとと４１
に柔゛軟性を損うため装着時ｋｊ？ｅ−する肌へのフイ
ット性が低下する。本発明の使い捨ておむつ用バックシ
ートは、特に１軸及び２軸方向の引張強度および引裂強
度がそれぞれ５０Ｋｆ／−および５０ｇ以上であること
が該バックシートに付着させるテープの剥離性が改良さ
れるため好適である。また１本発明のシートは柔軟度が
２０１ｍより小さい場合には、強度低下が著しく、破れ
易い等の欠陥が発生し易く、また柔軟度が６０−より大
きい場合にはごわごわとした感じがして、装着時のフィ
ツト性が低下して好ましくない。さらＫ、本発明のシー
トは厚さが２０μより薄いと強度が劣り、逆に８０μよ
り厚（なると柔軟性に乏しくなり、使い捨ておむつ用バ
ックシートとして適さな（なる。その他の物性としては
、ＪＩＢＬ１０９２ 法による耐水圧が５０００１１
＠Ｈ２０以上であることが好ましｂｏ
上記した物性を有する本発明の使い捨ておむつ用バック
シートは、ポリオレフィン樹脂と充填剤およびシリコー
ン油及び／又はポリグリセリン脂肪酸エステル系界面活
性剤よりなる組成物をシート状に成形後、２軸延伸する
方法により好適に得られる。The backsheet for disposable diapers of the present invention is described in detail in J.
Based on IS P8117 method (air permeability 500-5000)
sec/100cc, preferably 600-3000 sec/10
Based on the 0CC,'J'l8Z0208 method, the moisture permeability at a temperature of 40°C and a relative humidity of 90% is 1006 to 6.
oooy/rr?・2'4 hr, preferably 50
0'02500011'/m"24hr,'JIB F
Tensile strength based on 8115 method is 50~AOtJKI/a
11. Preferably 0-380Kg, JI8L
Tear strength based on 1085A-1 method is 5022509
．． Preferably 70-230#, flexibility based on JIB L1079 Clark method 20-60#, preferably 2
0-50μ and thickness 20-80μ, preferably 20
It is important that the thickness is ~60μ. That is, as a back sheet for disposable diapers, the air permeability of the sheet is 500.
Greater than 0 seconds/1oocc or moisture permeability is 100011
/nl・24 hr or less, the prevention of stuffiness when wearing disposable diapers is insufficient, and the air permeability is less than 500 seconds/1oocc or the moisture permeability is 60
If it is larger than 00II/-24hr, there is a fear of liquid leakage, and at the same time physical properties such as tear strength deteriorate, which is not preferable. In addition, if the tensile strength is less than 50 #/cd or the tear strength is less than 50I, it is easy to tear.
Conversely, it is desirable to have high tensile strength and tear strength, but the tensile strength is greater than 400-/- or the tear strength is bt25.
If it is thicker than 01, the moisture permeability will decrease.
When wearing it because it loses its flexibility? The fit to the skin is reduced. In particular, the backsheet for disposable diapers of the present invention has tensile strength and tear strength in uniaxial and biaxial directions of 50 Kf/- and 50g or more, respectively, in order to improve the releasability of the tape attached to the backsheet. suitable. In addition, if the sheet of the present invention has a flexibility lower than 201 m, the strength will be significantly reduced and defects such as easy tearing will occur, and if the flexibility is higher than 60, it will feel stiff. This is undesirable because the fit during installation deteriorates. Furthermore, if the sheet of the present invention is thinner than 20 μm, its strength will be poor, and if it is thicker than 80 μm, it will have poor flexibility, making it unsuitable as a back sheet for disposable diapers. Other physical properties include JIBL1092. Water pressure resistance according to the law is 500011
The backsheet for disposable diapers of the present invention having the above-mentioned physical properties is preferably made of a composition comprising a polyolefin resin, a filler, and a silicone oil and/or a polyglycerin fatty acid ester surfactant. It is suitably obtained by a method of forming into a shape and then biaxially stretching it.
本発明に用いるポリオレフィン樹脂としてハ、エチレン
、フロピレン、ブテン−１等、オレフィン類の単独重合
体あるいは共重合体が特に制限なく用いられるが、中で
も中密度ポリエチレン、線状低密度ポリエチレンが好ま
しく、特に密度が０．９１０〜０．９４０．９／−でメ
ルトフローインデックス（ＭＦＩ）＃ｔｏ、１〜１０ｊ
ｌ／１０分、好ましくは０．１〜５Ｉｉ／１０分の線状
低密度ポリエチレンが好ましく用いられる。また１本発
明においては。As the polyolefin resin used in the present invention, homopolymers or copolymers of olefins such as ethylene, fluoropylene, and butene-1 can be used without particular limitation, but medium density polyethylene and linear low density polyethylene are particularly preferred. Density is 0.910-0.940.9/- and melt flow index (MFI) #to, 1-10j
Linear low density polyethylene of 1/10 min, preferably 0.1 to 5 Ii/10 min, is preferably used. Also, in one aspect of the present invention.
上記した線状低密度ポリエチレンに１例えば高密度ポリ
エチレン、ポリプロピレン、ポリブテン−１等の１種以
上を少量添加、混合することも可能で、該添加、混合に
より得られる延伸シートの厚さが調整でき、特に引張・
引数強度、柔軟性等の物性を任意に調節することが出来
る。 。It is also possible to add or mix a small amount of one or more of, for example, high-density polyethylene, polypropylene, polybutene-1, etc. to the above-mentioned linear low-density polyethylene, and the thickness of the stretched sheet obtained by this addition and mixing can be adjusted. , especially tensile
Physical properties such as argument strength and flexibility can be adjusted as desired. .
本発明ＫＪｆｌ込る充填剤は特に制限されないが、通常
ゴム又はプラスチック中に混合される充填剤１例えば炭
酸カルシウム、石膏、亜硫酸カルシウム、りん酸カルシ
ウム、炭酸マグネシウム、塩基性炭酸マグネシウム、硫
酸マグネシウム、水和珪酸、無水珪酸、ンーダ灰、塩化
ナトリウム、硫酸バリウム、クレー。The filler included in KJfl in the present invention is not particularly limited, but fillers usually mixed into rubber or plastics include calcium carbonate, gypsum, calcium sulfite, calcium phosphate, magnesium carbonate, basic magnesium carbonate, magnesium sulfate, and water. Japanese silicic acid, anhydrous silicic acid, powder ash, sodium chloride, barium sulfate, clay.
各種セメント、火山灰、シラス、酸化チタン。Various cements, volcanic ash, shirasu, titanium oxide.
酸化鉄、カーボンブラック、種々の金属粉。Iron oxide, carbon black, various metal powders.
その他の無機物または無機物を主体とする有機物金属塩
等であり、一般に５μ以下、４９に０．１〜３μ程変の
平均粒径を有する粉粒体として用いる。この平均粒径が
大きすぎる充填剤を用いた場合には、得られる延伸シー
トの孔の緻密性が低下し耐水性が劣る。また平均粒径が
小さすぎる充填剤を用いた場合には、延伸ムラを生じゃ
すぐ良好な多孔性シートが得られない。充填剤の配合割
合は、ポリオレフィン樹脂１００重量部に対して５０〜
４００重量部、好ましくは６０〜３００重量部であす、
５０重量部より少ない場合には得られる多孔性シートの
連通孔が少なくなるため透湿性が小さくなるし、また４
００重量部以上ではシート状物の成形および延伸が困難
になる。They are other inorganic substances or organic metal salts mainly composed of inorganic substances, and are generally used as powder or granules having an average particle diameter of 5 μm or less, varying from 0.1 to 3 μm. If a filler having an average particle diameter that is too large is used, the resulting stretched sheet will have poor pore density and poor water resistance. Furthermore, if a filler having an average particle diameter that is too small is used, a good porous sheet cannot be obtained if stretching unevenness occurs. The blending ratio of the filler is 50 to 100 parts by weight of the polyolefin resin.
400 parts by weight, preferably 60 to 300 parts by weight,
When the amount is less than 50 parts by weight, the number of communicating pores in the resulting porous sheet decreases, resulting in a decrease in moisture permeability.
If it exceeds 0.00 parts by weight, it becomes difficult to form and stretch a sheet-like product.
本発明に用いられるシリコーン油は、一般にポリオレフ
ィン樹脂の溶融温度で揮発しない程度の耐熱性を有する
本のであれば特に制限されないが、中でも粘度が５０〜
５０ＱＯＯＯセンナストローク（ｃａｔ）、好ましくは
５００〜１００．０００ｃｓｔのものが好適で、例えば
ポリジメチルシロキサン、ポリメチルフェニルシロキサ
ンなどが好ましく用いられる。また、ポリグリセリン脂
肪酸エステル系界面活性剤としては、グリセリンの脱水
綜合によって得られたポリグリセリンと脂肪酸のエステ
ル化合物であり、通常グリセリンの縮合度が３〜１０で
あり、高級脂肪酸例えば自２〜ＣＩ７のカルボン酸と部
分乃至全部エステル化された本のをいい、ＨＬＢが６以
下、好ましくは３以下の４のが良好なる揮発性を得るた
め好ましく使われる。The silicone oil used in the present invention is generally not particularly limited as long as it has heat resistance to the extent that it does not volatilize at the melting temperature of the polyolefin resin;
50QOOO senna stroke (cat), preferably 500 to 100.000 cst, is suitable, and for example, polydimethylsiloxane, polymethylphenylsiloxane, etc. are preferably used. In addition, the polyglycerin fatty acid ester surfactant is an ester compound of polyglycerin and fatty acid obtained by dehydration of glycerin, and the degree of condensation of glycerin is usually 3 to 10, and higher fatty acids such as It refers to a compound that is partially or completely esterified with a carboxylic acid, and those with an HLB of 6 or less, preferably 3 or less and 4 are preferably used in order to obtain good volatility.
本発明においては、上記したシリコーン油。In the present invention, the silicone oil described above is used.
ポリグリセリン脂肪酸エステル系界面活性剤のうち少な
（とも１種を前記１−九樹脂と充填剤とに配合すること
により、均一な所定の厚みを有する延伸シートを良好に
得ることが出来、ひいては所望の物性を有するシートを
得ることが出来る。かかるシリコーン油及び／又はポリ
グリセリン脂肪酸エステル系界面活性剤の配合量は、ポ
リオレフィン樹脂ｉｏ。By blending at least one of the polyglycerin fatty acid ester surfactants with the resin 1-9 and the filler, a stretched sheet having a uniform predetermined thickness can be obtained satisfactorily, and the desired thickness can be obtained. A sheet having the following physical properties can be obtained.The blending amount of the silicone oil and/or polyglycerin fatty acid ester surfactant is the same as that of the polyolefin resin io.
重量部に対して０．１〜１０重量部、％に１〜５重量部
が好ましく、０．１重量部より少ない場合には１軸延伸
時において均一に白化しない、いわゆる延伸ムラが発生
し、また１０重量部より多い場合には押出成形性が不均
一となるため均一な厚みのシート状物を得ることが困難
である。Preferably, it is 0.1 to 10 parts by weight, and 1 to 5 parts by weight, and if it is less than 0.1 parts by weight, it will not uniformly whiten during uniaxial stretching, so-called stretching unevenness will occur. If the amount is more than 10 parts by weight, extrusion moldability becomes uneven, making it difficult to obtain a sheet with a uniform thickness.
本発明において、ポリオレフィン樹脂組成物の調製は一
般にヘンシェルミキサー等の高速攪拌（混合）機を用い
て、充填剤にシリコーン油及び／又はポリグリセリン脂
肪酸エステル系界面活性剤を添加・混合後、これらの混
合物とポリオレフィン樹脂の粉末又はペレット状物を混
合するか、あるいは上記混合機を用いて、ポリオレフィ
ン樹脂の粉末またはベレット状物と充填剤との混合物に
シリコーン油及び／又はポリグリセリン脂肪酸エステル
系界面活性剤を添加・混合した後、ミキシングロールや
スクリュー押出機により混練して行う。かかる調製にお
いて、少量の安定剤。In the present invention, the polyolefin resin composition is generally prepared using a high-speed stirring (mixing) machine such as a Henschel mixer, after adding and mixing silicone oil and/or polyglycerin fatty acid ester surfactant to the filler. Mix the mixture with polyolefin resin powder or pellets, or use the above mixer to add silicone oil and/or polyglycerin fatty acid ester surface active to the mixture of polyolefin resin powder or pellets and filler. After adding and mixing the ingredients, the mixture is kneaded using a mixing roll or screw extruder. In such preparations, a small amount of stabilizer.
顔料あるいは流動性を付与するためのステアリン酸およ
びその金属塩等を同時に或いは別途に混合することも出
来る。Pigments or stearic acid and its metal salts for imparting fluidity can be mixed simultaneously or separately.
上記したポリオレフィン樹脂組成物をシート状に成形後
、２軸延伸する方法は、例えばインフレーション成形法
やティダイ又は環状ダイを用いる押出し成形法によりシ
ート状物を成形し、次いで例えばロール延伸法により１
軸延伸後、引続きテンター延伸機、エヤーインフレーシ
ョン法、マンドレル延伸法等により２軸延伸する方法等
が特に制限な（用いられる。その中でポリオレフィン樹
脂組成物をエヤーインフレーション法によす筒状シート
に成形後、該シートをロール延伸法により１軸（縦長さ
）方向に延伸し、次かでマンドレル延伸法により２軸（
横）方向に延伸する方法は、
（１）未延伸原反シートの製造方法として、インフレー
ション法による筒状シートの製造方法の方が、Ｔ−ダイ
法に比べ厚み精度は着干劣るものの、簡便なダイの回転
により、最終製品の巻姿が良好なものが得られ、かつ、
エツジロスも少ない。A method of biaxially stretching the above-mentioned polyolefin resin composition after forming it into a sheet is to form a sheet by, for example, an inflation molding method, an extrusion molding method using a tie die or an annular die, and then, for example, by a roll stretching method.
After axial stretching, there are no particular restrictions on methods such as subsequent biaxial stretching using a tenter stretching machine, air inflation method, mandrel stretching method, etc. After forming, the sheet is stretched in the uniaxial (longitudinal) direction by a roll stretching method, and then biaxially (lengthwise) by a mandrel stretching method.
(1) As a method for manufacturing unstretched raw sheets, the method for manufacturing cylindrical sheets using the inflation method is simpler and simpler than the T-die method, although the thickness accuracy is inferior to that of the T-die method. By rotating the die, a final product with a good shape can be obtained, and
There are also few Etziros.
（２）２軸延伸方法として筒状による延伸法の方が、テ
ンタ一方式に比べ設備費が安く、ユーティリティも小さ
くなる等経済的メリットが大きい。(2) As a biaxial stretching method, the cylindrical stretching method has great economic advantages, such as lower equipment costs and less utility than the single tenter method.
の２点がより％に好適に採用される。These two points are more preferably adopted as percentages.
１軸延伸はポリオレフィン樹脂の軟化点以下で１．１〜
２．５倍、好ましくは１．２〜２倍延伸する。マンドレ
ル延伸法は、延伸温度がポリオレフィン樹脂の軟化点以
下の温度で、１．１〜２．５倍、好ましくは１．２〜２
倍延伸する。Uniaxial stretching is 1.1 to below the softening point of polyolefin resin.
Stretch 2.5 times, preferably 1.2 to 2 times. In the mandrel stretching method, the stretching temperature is 1.1 to 2.5 times, preferably 1.2 to 2 times, at a temperature below the softening point of the polyolefin resin.
Stretch twice.
このように２軸延伸されたシートはそのま＼スリットし
て巻取るか、熱処理によって寸法安定性を向上させた後
スリットして巻取る。The biaxially stretched sheet may be slit and wound as is, or the dimensional stability may be improved by heat treatment, and then the sheet may be slit and wound.
（効果）
このようにして得られたシートは、
通気度 ５００〜５０００ 秒／１００ＣＣ透湿度
１０００〜６０００１／ｎｌ ２４ｈｒ引張強度 ５
０に４／ｃＩＡ〜４０ロー／−引裂強度 ５０９〜２
５０１
柔軟度 ２０■〜６０■
の性質を有する本ので、厚さが２０〜８０μのものが、
通気性、透湿性、耐水性が良好で柔軟にして縦（ＭＤ）
、横（ＴＤ）方向とも引張強度、引裂強度に優れたシー
トであり、使い捨ておむつ用バックシートとして好適な
亀のである。(Effect) The sheet thus obtained has an air permeability of 500 to 5000 seconds/100CC.
1000~60001/nl 24hr tensile strength 5
0 to 4/cIA~40 low/-Tear strength 509~2
501 Since the book has the property of flexibility 20■~60■, the thickness is 20~80μ,
Good breathability, moisture permeability, and water resistance, making it flexible and vertical (MD)
This sheet has excellent tensile strength and tear strength in both the transverse (TD) direction and is suitable as a backsheet for disposable diapers.
（実施例）
以下、実施例および比較例を示すが、これらの物性測定
は以下に示す方法によって行なったものである。(Example) Examples and comparative examples will be shown below, and their physical properties were measured by the method shown below.
■ 引張強度および伸度：ＪＩＳ Ｐ８１１３に準拠し
て測定 （引張速度２００ｍ／■）■ 引裂強度：ＪＩ
Ｓ Ｌ１０８５ Ａ−１法に準拠して測定
■ 透湿度；４０℃、相対湿度９０％で、ＪＩＳ Ｚ
０２０８ に準拠して測定■ 耐水性；ＪＩＳ Ｌ１０
９２Ｂ法（静水圧法）に準拠して測定
■ 通気度：ＪＩＳ Ｐ８１１７ に準拠して測定
■ 柔軟度：ＪＩＳ Ｌ１０７９法（クラーク剛軟度試
験法）に準拠して測定
■ テープ剥離性；シートに巾１９ｍのセロテープをＭ
Ｄ 、ＴＤ方向のそれぞれに貼り、すばや〈引剥がした
時の剥れの状態を次の基準で判定した。■ Tensile strength and elongation: Measured according to JIS P8113 (Tensile speed 200m/■) ■ Tear strength: JI
Measured according to SL1085 A-1 method ■ Moisture permeability: 40℃, relative humidity 90%, JIS Z
Measured according to 0208■ Water resistance; JIS L10
Measured according to 92B method (hydrostatic pressure method) ■ Air permeability: Measured according to JIS P8117 ■ Flexibility: Measured according to JIS L1079 method (Clark bending test method) ■ Tape removability: on the sheet 19m wide sellotape M
It was pasted on each of the D and TD directions, and the state of peeling when peeled off was evaluated based on the following criteria.
■ おむつ装着テスト；成人用おむつ（市販品）のバッ
クシートを第１図のように切り取り、その跡にそれぞれ
サンプルシートを溶着させて、むれ性のテストを行なっ
た。■ Diaper wearing test: The back sheet of an adult diaper (commercially available) was cut out as shown in Figure 1, and a sample sheet was welded to each of the traces to perform a stuffiness test.
（評 価）
成人３人にそれぞれ装着し、むれ感が
あるかどうか無孔バンクシートを基準として感覚で次の
ように評価した。(Evaluation) Three adults wore the sheets and evaluated whether they felt stuffiness using the non-perforated bank sheet as a standard as follows.
実施例１及び比較例１．２ 線状低密度ポリエチレン（住友化学■製。Example 1 and Comparative Example 1.2 Linear low-density polyethylene (manufactured by Sumitomo Chemical ■).
、ｘｊカーｋｙＬ ＦＡ２０１−０．ＭＦＩ＝２ ）１
００重量部に重質炭酸カルシウム（白石カルシウム■製
、ホヮイトン５ｓＢ（赤）、粒径１．２μ）１２０重量
部およびシリコーンオイル（東芝シリコン■製、Ｔ８Ｆ
−４５１。, xj car kyL FA201-0. MFI=2)1
00 parts by weight, 120 parts by weight of heavy calcium carbonate (manufactured by Shiraishi Calcium ■, Wheaton 5sB (red), particle size 1.2μ) and silicone oil (manufactured by Toshiba Silicon ■, T8F).
-451.
粘度１００００ｃｓｔ）３重量部より成る組成物をスー
パーミキサーで混合し、次いで二軸押出機でベレットと
した。このベレットラスクリユー径５０■φ、ダイ径１
５０■φのインフレーション押出機を用ｂ、下記の条件
で厚さ５０μ、折径３８０％の筒状シートを成形した。A composition consisting of 3 parts by weight (viscosity 10,000 cst) was mixed in a super mixer and then formed into pellets in a twin screw extruder. This bellet raskrieux diameter 50■φ, die diameter 1
A cylindrical sheet with a thickness of 50 μm and a folded diameter of 380% was molded using a 50 μΦ inflation extruder under the following conditions.
（押出条件）
・シリンダ一温度 １６０．１７０．１７５℃・アダプ
ター Ｉ １８０℃
・ダイ ｌ １８０℃
・スクリュー回転数 ６０ｒｐｍ
・引取速度 １０ｍ／ｍ１ｎ
次いで、折りたたまれたシートをロール延伸機を用いて
６０℃で１．４倍に一軸延伸した。(Extrusion conditions) - Cylinder temperature: 160.170.175°C - Adapter I: 180°C - Die I: 180°C - Screw rotation speed: 60 rpm - Take-up speed: 10 m/m1n Next, the folded sheet is heated at 60° C. using a roll stretching machine. The film was uniaxially stretched to 1.4 times.
更に、この−軸延伸シートを次の構造から成る２軸延伸
機で二輪延伸した。すなわち、２ＣＩＰＩ）
軸延伸装置として繰入れロールによって予熱部及び拡巾
延伸部が１体となったマンドレルが懸垂され、該マンド
レルがエヤリングにより外部加熱され、更に延伸された
シートを引取る引取ロールより成るものである。Further, this -axially stretched sheet was subjected to two-wheel stretching using a biaxial stretching machine having the following structure. In other words, 2CIPI) As an axial stretching device, a mandrel having a preheating section and a width expanding stretching section is suspended by a feeding roll, the mandrel is externally heated by an air ring, and a take-up roll takes up the stretched sheet. It is something.
この２軸延伸装置により一軸延伸後の折径３５０■のシ
ートを横方向に８０℃で１．４倍に延伸し、冷却して巻
き取った。得られたシートは厚さ４０μであり、シート
の実質延伸倍率は１．４ Ｘ １．３倍であった。Using this biaxial stretching apparatus, a uniaxially stretched sheet having a fold diameter of 350 square meters was stretched in the transverse direction at 80 DEG C. by a factor of 1.4, cooled, and wound up. The resulting sheet had a thickness of 40 microns, and the effective stretching ratio of the sheet was 1.4 x 1.3.
また、比較例１．２においてダイリップの厚さを変化さ
せ、比較例１においては厚さ２０μ、比較例２Ｖｃおり
ては１２０μの厚さのインフレーション原反シートを同
様に一軸、二輪延伸した。得られたシートの性質を測定
した結果を表−１に示した。In addition, the thickness of the die lip was changed in Comparative Example 1.2, and blown raw sheets having a thickness of 20 μm in Comparative Example 1 and 120 μm in Comparative Example 2Vc were similarly stretched uniaxially and with two wheels. Table 1 shows the results of measuring the properties of the obtained sheet.
比較例３，４
実施例１と同じ組成物を実施例１と同じ条件でインフレ
ーション押出した後、それぞれ１．４倍及び２．６倍に
一軸延伸した後、１８０倍で二軸延伸して巻取った。得
られたシート巾は１．４倍の場合に５５０■、２，６倍
の場合に３１５■であった。得られたシートの性質を表
−１に示した。Comparative Examples 3 and 4 The same composition as in Example 1 was inflation extruded under the same conditions as in Example 1, then uniaxially stretched to 1.4 times and 2.6 times, respectively, and then biaxially stretched to 180 times and rolled. I took it. The obtained sheet width was 550 square meters in the case of 1.4 times, and 315 square meters in the case of 2.6 times. The properties of the obtained sheet are shown in Table 1.
比較例５．６
市販されている通気性を有する紙おむつ用バックシート
及び無孔性の紙おむつ用バックシートの物性をそれぞれ
表−１に示した。Comparative Example 5.6 Table 1 shows the physical properties of commercially available breathable backsheets for disposable diapers and non-porous backsheets for disposable diapers.
実施例１及び比較例１〜６の結果より、実施例１は市販
の通気性バックシート（比較例５）に比べ横方向の引張
強度、縦方向の引裂強度に優れ、テープ剥離テストを実
施したところ、比較例５は縦方向に容易にテープ剥離試
験により引き裂れたが、実施例１はシートが伸びるだけ
でテープとシートが剥れ裂けることはなかった。また、
実施例１は比較例６及び比較例３に比べおむつ装着試験
におりてあきらかにムレ防止効果があった。また、比較
例１．２においてシートの厚さが薄しと強度低下が認め
られ、厚いと柔軟性に劣った。From the results of Example 1 and Comparative Examples 1 to 6, Example 1 had superior tensile strength in the transverse direction and tear strength in the longitudinal direction compared to the commercially available breathable backsheet (Comparative Example 5), and a tape peel test was conducted. On the other hand, Comparative Example 5 was easily torn in the longitudinal direction in the tape peeling test, but in Example 1, the sheet was only stretched, but the tape and the sheet did not peel and tear. Also,
In comparison with Comparative Examples 6 and 3, Example 1 was clearly effective in preventing stuffiness in the diaper wearing test. Furthermore, in Comparative Example 1.2, when the thickness of the sheet was thin, a decrease in strength was observed, and when the sheet was thick, the flexibility was poor.
比較例４では高延伸倍率であるため、テープ剥離性に劣
った。In Comparative Example 4, the tape releasability was poor due to the high stretching ratio.
実施例２，３．４および比較例７，８ 線状低密度ポリエチレン（住人化学■製。Examples 2, 3.4 and comparative examples 7, 8 Linear low-density polyethylene (manufactured by Susumu Kagaku ■).
スミカセンＬ−ＦＡ２０１−０．ＭＦＲ＝２ ’）１０
０重量部に重質炭酸カルシウム（白石カルシウム■製、
ホワイトン５ｓＢ（赤）、粒径１．２μ）の量を変化さ
せた本のにシリコーンオイル（東芝シリコーン■１ｌｌ
ｊ、’ｒ８Ｆ−４５１、粘度６０００ｃｓｔ ）５重量
部をそれぞれ加え、実施例１と同様にして６０℃で縦延
伸した後、筒杖のま＼マンドレルに沿わせて８０℃で１
．４倍に横延伸した。Sumikasen L-FA201-0. MFR=2')10
0 parts by weight of heavy calcium carbonate (manufactured by Shiraishi Calcium ■,
Whiten 5sB (red), particle size 1.2μ) was added to the book with varying amounts of silicone oil (Toshiba Silicone■ 1ll).
J, 'r8F-451, viscosity 6000 cst) were added to each, and after longitudinal stretching at 60°C in the same manner as in Example 1, stretching was carried out at 80°C along a mandrel.
．． It was laterally stretched 4 times.
得られた結果を表〜２に示す。The results obtained are shown in Table 2.
実施例５．６．７および比較例９，１０線状低密度ポリ
エチレン（住友化学■製。Examples 5.6.7 and Comparative Examples 9 and 10 Linear low-density polyethylene (manufactured by Sumitomo Chemical ■).
スミカセンＬ、ＶＦＲ＝２）９０重量部と高密度ポリエ
チレン（昭和電工■製、ショーレックスＮ５００８ 、
ＭＦＲ＝０．９ ）１０重量部の樹脂混合物１００重量
部に重質炭酸カルシウム（白石カルシウム■製、ホワイ
トン５ＳＢ（赤）１．２μ）１００重量部及びシリコー
ンオイル（東芝シリコーン■製、Ｔ８Ｆ−４３３，粘度
４５０ｃｓｔ）５重量部より成る組成物を実施例１と同
様にして造粒し、押出シートを成形後に一軸延伸倍率を
変化させ、更に実施例１と同様に二軸延伸した。得られ
た結果を表−３に示した。Sumikasen L, VFR=2) 90 parts by weight and high-density polyethylene (Showa Denko ■, Shorex N5008,
MFR=0.9) 100 parts by weight of a resin mixture containing 100 parts by weight of heavy calcium carbonate (manufactured by Shiraishi Calcium ■, Whiten 5SB (red) 1.2μ) and silicone oil (manufactured by Toshiba Silicone ■, T8F- 433, viscosity 450 cst) was granulated in the same manner as in Example 1, and after forming an extruded sheet, the uniaxial stretching ratio was varied, and the composition was further biaxially stretched in the same manner as in Example 1. The results obtained are shown in Table 3.
得られた結果より、比較例９では得られた延伸シートは
厚み精度がや＼劣り、透湿性も低かった。実施例５．６
．７ではいずれも良好なる強度、透湿性を有１−ていた
。比較例１０は引裂強度に劣りテープ剥離性に劣った。From the results obtained, the stretched sheet obtained in Comparative Example 9 had slightly inferior thickness accuracy and low moisture permeability. Example 5.6
．． No. 7 had good strength and moisture permeability. Comparative Example 10 had poor tear strength and tape releasability.
実施例８．９および比較例１１．１２
実施例５と同じ配合割合で同様に押出成形後、６０℃で
一軸延伸を１．５倍に一定にした後、筒状マンドレルの
予熱部の径を一定圧して、マンドレル拡中部の最大波中
部の比を１６倍、２，２倍、５．４倍にして、横延伸を
行なった。結果を表−３に示す。実施例８．９では良好
なる性質を有する延伸シートが得られたが、比較例１２
の６．４倍のマンドレルでは延伸が困難ですぐに破断し
た。また比較例１１は一軸延伸だけのシートで、このシ
ートは通気性および透湿性が低かった。Example 8.9 and Comparative Example 11.12 After extrusion molding in the same manner as in Example 5, the uniaxial stretching was kept constant at 1.5 times at 60°C, and the diameter of the preheated part of the cylindrical mandrel was Transverse stretching was carried out under a constant pressure and with the ratio of the maximum wave part of the mandrel expansion part to 16 times, 2.2 times, and 5.4 times. The results are shown in Table-3. In Examples 8 and 9, stretched sheets with good properties were obtained, but in Comparative Example 12
Stretching was difficult with a mandrel that was 6.4 times larger than that of 6.4, and it broke immediately. Moreover, Comparative Example 11 was a sheet that was uniaxially stretched only, and this sheet had low air permeability and low moisture permeability.
実施例１０〜１４および比較例１６〜１５線状低密度ポ
リエチレン（住人化学■製。Examples 10-14 and Comparative Examples 16-15 Linear low-density polyethylene (manufactured by Susumu Kagaku ■).
スミカセンＬ、ＦＡ−２０１−０，ＭＦＲ＝２）１００
重量部に対１．、炭酸カルシウム（白石カルシウム■製
、ホワイトンｓｓＢ、粒径１．２μ）１２０Ｊｉ量部を
加え、更にシリコーンオイル（東芝シリコーン■ｌｆｔ
、ＴＳＦ４５１ｉ００００）、デカグリセリルデカイン
ステアレー ト（日光ケミカルズ■製、デカグリン１Ｏ
−Ｉｓ）の添加量を変化させて実施例１と同様にして二
軸延伸した。結果を表−４に示した。比較例１３は、−
軸延伸において延伸ムラが大きく均一に白化したシート
が得られなかった。また、比較例１４．１５は、押出に
おいて厚み精度が悪く、二軸延伸部で破断が起こり二軸
延伸シートが得られなかった。Sumikasen L, FA-201-0, MFR=2) 100
1 part by weight. , 120Ji parts of calcium carbonate (manufactured by Shiraishi Calcium ■, Whiten ssB, particle size 1.2μ) was added, and silicone oil (Toshiba Silicone ■lft) was added.
, TSF451i0000), Decaglyceryl Decaine Stearate (manufactured by Nikko Chemicals ■, Decaglin 1O)
Biaxial stretching was carried out in the same manner as in Example 1 while changing the amount of -Is) added. The results are shown in Table-4. Comparative example 13 is -
In the axial stretching, there was large stretching unevenness and a uniformly whitened sheet could not be obtained. Further, in Comparative Examples 14 and 15, the thickness accuracy was poor during extrusion, and breakage occurred at the biaxially stretched portion, resulting in failure to obtain a biaxially stretched sheet.
第１図は、おむつ装着テストに用するおむつの概略図を
示す。FIG. 1 shows a schematic diagram of the diaper used for the diaper wearing test.
Claims (1)
度１０００〜６０００ｇ／ｍ＾２・２４ｈｒ、引張強度
５０〜４００Ｋｇ／ｃｍ＾２、引裂強度５０〜２５０ｇ
、柔軟度２０〜６０ｍｍおよび厚さ２０〜８０μである
ポリオレフィン製の２軸延伸シートよりなる使い捨てお
むつ用バックシート ２）ポリオレフィン樹脂１００重量部、充填剤５０〜４
００重量部およびシリコーン油及び／又はポリグリセリ
ン脂肪酸エステル系界面活性剤０．１〜１０重量部より
なる組成物をシート状に成形後それぞれ延伸倍率１．１
〜２．５倍で１軸および２軸方向に延伸することを特徴
とする使い捨ておむつ用バックシートの製造方法 ３）筒状シートに成形後、該シートを縦（長さ）方向に
１．１〜２．５倍に延伸し、次いでマンドレル延伸法に
より横方向に１．１〜２．５倍延伸した特許請求の範囲
第２項記載の使い捨ておむつ用バックシートの製造方法[Claims] 1) Air permeability 500-5000 seconds/100c. c. , moisture permeability 1000-6000g/m^2・24hr, tensile strength 50-400Kg/cm^2, tear strength 50-250g
, a back sheet for disposable diapers made of a biaxially stretched sheet made of polyolefin having a flexibility of 20 to 60 mm and a thickness of 20 to 80 μm 2) 100 parts by weight of polyolefin resin, 50 to 4 parts by weight of filler
After forming a composition consisting of 0.00 parts by weight and 0.1 to 10 parts by weight of silicone oil and/or polyglycerin fatty acid ester surfactant into a sheet shape, each stretch ratio was 1.1.
Method for producing a backsheet for disposable diapers, characterized by stretching in uniaxial and biaxial directions at ~2.5 times 3) After forming into a cylindrical sheet, the sheet is stretched in the longitudinal (length) direction by 1.1 times. The method for producing a backsheet for disposable diapers according to claim 2, which is stretched by a factor of 2.5 times and then 1.1 to 2.5 times in the transverse direction by a mandrel stretching method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61123265A JPS62282003A (en) | 1986-05-30 | 1986-05-30 | Back sheet for disposable diaper and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61123265A JPS62282003A (en) | 1986-05-30 | 1986-05-30 | Back sheet for disposable diaper and its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62282003A true JPS62282003A (en) | 1987-12-07 |
| JPH0455072B2 JPH0455072B2 (en) | 1992-09-02 |
Family
ID=14856287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61123265A Granted JPS62282003A (en) | 1986-05-30 | 1986-05-30 | Back sheet for disposable diaper and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62282003A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6378003U (en) * | 1986-11-11 | 1988-05-24 | ||
| JPS6468474A (en) * | 1987-09-10 | 1989-03-14 | Tokyo Electron Ltd | Formation of film |
| JPS6477605A (en) * | 1987-09-14 | 1989-03-23 | Fujimori Kogyo Co | Disposable diaper |
| JPH01178532A (en) * | 1987-12-30 | 1989-07-14 | Kohjin Co Ltd | Heat treatment of porous film |
| JPH01164708U (en) * | 1988-05-11 | 1989-11-17 | ||
| JPH01164707U (en) * | 1988-05-11 | 1989-11-17 | ||
| JPH0263834U (en) * | 1988-10-31 | 1990-05-14 | ||
| JPH0324118U (en) * | 1989-07-17 | 1991-03-13 | ||
| US5626571A (en) * | 1995-11-30 | 1997-05-06 | The Procter & Gamble Company | Absorbent articles having soft, strong nonwoven component |
| US5885269A (en) * | 1992-09-24 | 1999-03-23 | Minnesota Mining And Manufacturing Co. | Oil-tolerant reinforcement strip |
| US6191055B1 (en) | 1996-12-18 | 2001-02-20 | 3M Innovative Properties Company | Oil-tolerant reinforcement strip |
| JP2009240680A (en) * | 2008-03-31 | 2009-10-22 | Livedo Corporation | Disposable diaper |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58149303A (en) * | 1982-03-02 | 1983-09-05 | 花王株式会社 | Disposable diaper |
| JPS5969906U (en) * | 1982-11-01 | 1984-05-12 | 王子油化合成紙株式会社 | disposable diaper |
| JPS60185803A (en) * | 1984-03-05 | 1985-09-21 | 三井東圧化学株式会社 | Disposable diaper |
| JPS61179307A (en) * | 1985-01-30 | 1986-08-12 | 花王株式会社 | Absorbable article |
-
1986
- 1986-05-30 JP JP61123265A patent/JPS62282003A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58149303A (en) * | 1982-03-02 | 1983-09-05 | 花王株式会社 | Disposable diaper |
| JPS5969906U (en) * | 1982-11-01 | 1984-05-12 | 王子油化合成紙株式会社 | disposable diaper |
| JPS60185803A (en) * | 1984-03-05 | 1985-09-21 | 三井東圧化学株式会社 | Disposable diaper |
| JPS61179307A (en) * | 1985-01-30 | 1986-08-12 | 花王株式会社 | Absorbable article |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6378003U (en) * | 1986-11-11 | 1988-05-24 | ||
| JPS6468474A (en) * | 1987-09-10 | 1989-03-14 | Tokyo Electron Ltd | Formation of film |
| JPS6477605A (en) * | 1987-09-14 | 1989-03-23 | Fujimori Kogyo Co | Disposable diaper |
| JPH01178532A (en) * | 1987-12-30 | 1989-07-14 | Kohjin Co Ltd | Heat treatment of porous film |
| JPH01164708U (en) * | 1988-05-11 | 1989-11-17 | ||
| JPH01164707U (en) * | 1988-05-11 | 1989-11-17 | ||
| JPH0263834U (en) * | 1988-10-31 | 1990-05-14 | ||
| JPH0522168Y2 (en) * | 1988-10-31 | 1993-06-07 | ||
| JPH0324118U (en) * | 1989-07-17 | 1991-03-13 | ||
| JPH0525607Y2 (en) * | 1989-07-17 | 1993-06-29 | ||
| US5885269A (en) * | 1992-09-24 | 1999-03-23 | Minnesota Mining And Manufacturing Co. | Oil-tolerant reinforcement strip |
| US5626571A (en) * | 1995-11-30 | 1997-05-06 | The Procter & Gamble Company | Absorbent articles having soft, strong nonwoven component |
| US6191055B1 (en) | 1996-12-18 | 2001-02-20 | 3M Innovative Properties Company | Oil-tolerant reinforcement strip |
| JP2009240680A (en) * | 2008-03-31 | 2009-10-22 | Livedo Corporation | Disposable diaper |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0455072B2 (en) | 1992-09-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |