CN109310535A - 穿孔拉伸层压材料 - Google Patents

穿孔拉伸层压材料 Download PDF

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Publication number
CN109310535A
CN109310535A CN201780035250.0A CN201780035250A CN109310535A CN 109310535 A CN109310535 A CN 109310535A CN 201780035250 A CN201780035250 A CN 201780035250A CN 109310535 A CN109310535 A CN 109310535A
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China
Prior art keywords
perforation
stretch laminate
pair
space
woven fabrics
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Granted
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CN201780035250.0A
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CN109310535B (zh
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布莱德利·朗福德
唐纳德·H·莱斯特
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Jabery Group
Aplix SA
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Jabery Group
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Classifications

    • 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
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • 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
    • A61F13/45—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 shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
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    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
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    • A61F13/00—Bandages or dressings; Absorbent pads
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    • A61F13/56—Supporting or fastening means
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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Laminated Bodies (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • External Artificial Organs (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

本发明公开了一种拉伸层压材料以及所述拉伸层压材料在拉伸方向上拉伸时减少和/或防止拉伸层压材料撕裂的方法。拉伸层压材料具有穿孔图案。所述穿孔图案具有至少两列。第一列具有多对穿孔，所述多对穿孔一对堆叠在另一对的上方。每对中的穿孔沿第一方向倾斜，第一空间将一对与另一对分开。第二列具有多对穿孔，所述多对穿孔一对堆叠在另一对的上方。每对中的穿孔沿第二方向倾斜，第二空间将一对与另一对分开。所述第一方向和第二方向可以不同。所述列之间的第三空间不大于对中的穿孔之间的第一或第二空间。

Description

穿孔拉伸层压材料
相关申请
本申请要求于2016年4月19日提交的共同未决的序列号No.62/324,574的美国临时申请和2017年4月18日提交的序列号No.15/489,812的美国实体申请的权益。
发明领域
本发明涉及可用于构造卫生产品的穿孔拉伸层压材料以及减少或防止拉伸层压材料中撕裂的方法。
发明背景
拉伸层压材料用于例如卫生产品的构造中。卫生产品可包括但不限于：尿布、吸收性物品、训练裤、青春裤、成人失禁产品等。例如，参见US7794819和其中引用的参考文献，其全部内容通过引用并入本文。
通常，拉伸层压材料可以是具有层压在一起的两层或三层的结构，使得层压结构在至少一个方向上是弹性的(例如，可拉伸和可恢复的)。双层层压材料通常包括层压到弹性薄膜上的无纺布(或薄膜)，并且三层层压材料通常包括中间夹着弹性薄膜的两层无纺布(或薄膜)。
拉伸层压材料可用作卫生产品的各种组分。在一个实例中，拉伸层压材料用于形成卫生产品的“侧板耳片”或“翼片”。侧板耳片和翼片用于将卫生产品固定在穿用者的腰部周围。通常，侧板耳片或翼片贴附于卫生产品的侧向后部，并且当该产品在穿用者身上使用时可以在卫生产品的前部可释放地固定。
这些侧板耳片或翼片通常是弹性的。侧板耳片或翼片的弹性有助于确保卫生产品与穿用者的牢固和紧密贴合。在使用中，例如，侧板耳片或翼片可以从产品的后部伸展并围绕穿用者，并且可释放地固定到产品的前部，并且侧板耳片或翼片缩回以提供与穿用者的牢固和紧密贴合。
这些侧板耳片和翼片可以是透气的或不透气的。不透气的侧板耳片或翼片对于穿用者来说可能是不舒服的，并且由于皮肤和不透气的侧板耳片之间的高水分含量而可能易于引起感染。这些产品模仿传统的内衣设计，并且因为年龄较大的儿童/成人可以更好地控制膀胱，可能会长时间穿着。这种较长的穿着时间也可能由于层压材料和使用者之间的水分而导致皮肤刺激/恶化。特别是在气候为高温和/或高湿度的国家。透气侧板耳片或翼片可以是穿孔的。穿孔允许湿气逸出以及皮肤“呼吸”。但是，薄膜穿孔的问题在于，当耳片被拉伸时，由于提供撕裂传播的路径，穿孔使耳片本质上很脆弱。当产品在生产线上制造时和/或当被激活时，和/或当产品被卷起和/或展开以制造卫生制品时，和/或当卫生制品适用于穿用者时，或在使用过程中，可以产生拉伸。
因此，需要制造透气(例如，穿孔)的拉伸层压材料，其在拉伸时能够抵抗撕裂或撕裂传播。
US5336554公开了一种可拉伸的抗撕裂多孔弹性体薄膜，其中穿孔由激光束制成。USD637008显示了一种采用一种设计的拉伸层压材料。US2012/0244412公开了一种穿孔薄膜。US8795809公开了一种采用SEEPS弹性体嵌段共聚物制成的抗撕裂弹性薄膜。来自北卡罗来纳州Statesville(斯泰茨维尔)的International Perforating Services,Inc(国际射孔服务公司)的IPS Hole Pattern 14.2(IPS孔图案14.2)是一种穿孔图案，其具有装饰性和用于刚性支撑，具有良好的气流和良好的声学特性(但没有提及抗撕裂或抗撕裂传播的能力，特别是没有提及关于拉伸层压材料)。通过引用将前述每篇参考文献的全部内容并入本文。
发明概述
本发明公开了一种拉伸层压材料以及当所述拉伸层压材料在拉伸方向上拉伸时减少和/或防止拉伸层压体撕裂的方法。所述拉伸层压材料具有穿孔图案。所述穿孔图案具有至少两列。第一列具有在一对上方堆叠另一对的多对穿孔。每对中的穿孔沿第一方向倾斜，第一空间将一对与另一对分开。第二列具有在一对上方堆叠另一对的多对穿孔。每对中的穿孔沿第二方向倾斜，第二空间将一对与另一对分开。第一方向和第二方向可以不同。所述列之间的第三空间不大于所述对中的穿孔之间的第一或第二空间。
附图说明
出于说明本发明的目的，在附图中示出了目前优选的形式；然而，应当理解，本发明不限于所示的精确布置和手段。
图1是本发明在示例性卫生产品中使用的示意图。
图2A和2B是具有穿孔的示例性拉伸层压材料的横截面的侧视图。
图3A是本发明的一个实施方式的示意图，示出了穿孔图案的实施方式。
图3B是图3A中所示的穿孔图案的一部分的分解图。
图4是与现有技术的穿孔图案相比，本发明(图3A中所示的图案)的操作示意图。
图5示出了方法1的设置。
图6和7示出了方法2中使用的样品的制备。
图8和9示出了方法2的设置。
发明详述
参照附图，其中，相同的元件具有相同的数字，图1中示出了示例性卫生产品10(所示的卫生产品是尿布)。尿布10通常包括后腰部12，前腰部14和互连部分16(具有例如“沙漏”构造)。在后腰部12的侧边缘处，通常附有侧板(或耳片)18。在侧板18的远端，可以将翼片20附到其上。在翼片20的远端，可以将紧固装置22附到其上。在前腰部14的外表面上，可以设置配合紧固装置24(显示为两个元件，但可以是连续元件)。如所知的那样，紧固装置22和配合紧固装置24协作以将尿布10可释放地固定在穿用者周围。紧固装置22和配合紧固装置24可以是任何已知的紧固机构。这种已知的紧固机构包括但不限于钩环紧固件和粘合紧固件。在尿布10中，侧板18可以是弹性的(例如，在远离后腰部12的方向上可拉伸)，并且翼片20可以是非弹性的，或者侧板18可以是非弹性的，并且翼片20可以是弹性的，这样尿布可以牢固地贴合穿用者。下文公开的拉伸层压材料可用于侧板耳片或翼片中。
图2A和2B示出了具有一些穿孔的拉伸层压材料的示例性实施方式。在图2A中，显示了双层层压材料30。层压材料30具有层压到具有穿孔31的弹性层34上的无纺布层32。层32、34可以通过粘合剂层33彼此粘合，或者所述粘合剂层可以用另外的粘合技术(下面讨论)代替。在图2B中，显示了三层层压材料40。层压材料40具有两个无纺布层42、46，其中夹有带有穿孔41的弹性层44。层42、44和46可以通过粘合剂层43、45彼此粘合和/或可以使用其他粘合技术(下面讨论)替换任一个或两个粘合剂层。这些拉伸层压材料是常规的(即，可以由常规材料制成)并且可以是活化的或未活化的。可以以任何常规方式实现活化，例如参见US4834741，其通过引用并入本文。在该活化过程中，层压后的层压材料在环(或齿状)辊之间通过，以增强(或激活)层压材料的弹性。
无纺布32、42、46指任何无纺布。这种无纺布包括但不限于梳理、针刺(needled)、射流喷网、气流成网、纺粘、熔喷、纺粘和熔喷的组合、以及它们的组合。无纺布的纤维可以是短纤维，长丝或其组合。无纺布的纤维可以是聚烯烃(PE、PP)或聚酯，(PET、PBT)，聚酰胺(尼龙)或其组合。无纺布材料可具有任何基重。在一个实施方式中，基重可以在5-40克/平方米(gsm)和其中的子集的范围内。在另一个实施方式中，基重可以在19-30gsm的范围内。在另一个实施方式中，基重可以是25±4gsm。在三层结构中，两种无纺布的基重可以相同或不同。在一个实施方式中，第一无纺布的基重可以为22±3gsm，而另一种无纺布的基重可以为27±3gsm。
弹性薄膜34、44可以是任何弹性薄膜。所述弹性薄膜可以由弹性体聚合物制成。所述弹性体聚合物可以是但不限于：苯乙烯嵌段共聚物、热塑性烯烃、弹性体合金、热塑性聚氨酯、热塑性共聚酯、热塑性聚酰胺、以及它们的组合。苯乙烯嵌段共聚物可包括但不限于：苯乙烯-异戊二烯-苯乙烯(SIS)嵌段共聚物、苯乙烯-丁烯-苯乙烯(SBS)嵌段共聚物、苯乙烯-丁二烯橡胶(SBR)及其组合。所述弹性薄膜可具有任何基重。所述薄膜的基重可以在30-90gsm以及其中子集的范围内。在一个实施方式中，薄膜的基重可以在60±10gsm的范围内。所述弹性薄膜可在层压之前或之后穿孔。
所述粘合剂层(多层)可通过任何粘合技术制成。例如，所述粘合技术可使用粘合剂和/或其他粘合方法。所述粘合方法可包括：直接层压(通过与熔融弹性聚合物接触而自发粘合)、热粘合(通过热和/或压力，以及连续或图案化)，和/或超声粘合(连续或图案化)。所述粘合剂可以是弹性的或非弹性的。所述粘合剂可以是层之间的连续片材或可以是成形的(例如，成形是指：线--连续/不连续，直/波浪；点；图案)。每个粘合剂层可具有任何基重。在一个实施方式中，所述粘合剂层的基重可以在5-30gsm以及其中的子集的范围内。在另一个实施方式中，所述粘合剂层的基重可以在12±4gsm的范围内。在又一个实施方式中，每个粘合剂层可具有5-6gsm的基重。
所述穿孔(或穿孔图案)将在下文中讨论。穿孔图案是拉伸层压材料(如上所述)。穿孔可以单独在弹性薄膜中或在拉伸层压材料中制成(无纺布/弹性锉或无纺布/弹性锉/无纺布)。图3A是显示穿孔图案的本发明实施方式的示意图。图3B是图3A中的穿孔图案的一部分的放大视图(示出了两个完整的列和第三列的一部分)。
下文讨论的穿孔是指圆形，但不限于此。穿孔可以具有任何形状。这种形状包括，例如；圆形、椭圆(或椭圆形)、矩形、正方形、三角形、多边形、狭缝(直线或波浪形)、星形、新月形、菱形等。
在图3A中，穿孔图案包括一对列50。每对列50包括第一列52和第二列54。每列52、54具有多个(或至少两个)成对穿孔，一对堆叠在另一对之上。例如，列52包括穿孔对58，列54包括穿孔对60。
在图3B中，注意：在列52中，穿孔对58具有斜率M1，并且在列54中，穿孔对60具有斜率M2。M1和M2可以相同或不同(即，M1和M2的绝对值)。M1可以具有正斜率，并且M2可以具有负斜率(或反之亦然)。在另一个实施方式(未示出)中，M1和M2可以是零，并且在其各自列中，对58位于对60之间，在其各自列中。
参考图3B，下文给出的间隔值是示例性的，并非旨在限制，而是说明本发明的一个实施方式。一对穿孔之间的空间由S1和S2表示。在一个实施方式中，S1和S2可以相同或不同。在一个实施方式中，S1和S2可以是1.7mm。所述对的列之间的空间(或相邻列之间的空间)表示为S3。在一个实施方式中，S3可以等于或不同于S1或S2。在一个实施方式中，S3可以是1.7mm。列中的对之间的空间由S4表示。在一个实施方式中，S4可以是2mm。一对穿孔之间的空间由S5表示。在一个实施方式中，S5可以是1mm。在一个实施方式中，S4等于或大于S5。成对列之间的空间(前缘到前缘)由S6表示。在一个实施方式中，S6可以是6.8mm。列中的对(前缘到前缘)之间的空间用S7表示。在一个实施方式中，S7可以大于或等于两倍(2x)S1。在另一个实施方式中，S7可以大于或等于三倍(3x)S1。在又一个实施方式中，S7可以大于或等于4x S1。第一列中的一对穿孔可以与第二列中的对之间的空间对齐(或者一对58位于分离对60的空间之间)。例如，对58与对60之间的空间对齐。穿孔的直径用D表示。在一个实施方式中，D可以在0.15-0.90mm的范围内。在另一个实施方式中，D可以是0.55mm。
图4是与具有线性穿孔图案的现有技术拉伸层压材料(指定为PA)相比，具有本发明穿孔图案的拉伸层压材料(指定为INV)的操作示意图。伸长方向是DE，撕裂方向是DT。现有技术的撕裂线TPA是直的并且遵循垂直于伸长方向的第一穿孔线，而本发明的图案TINV上的撕裂线是不规则的。线的不规则性表明抗撕裂。
所述穿孔拉伸层压材料的撕裂强度可能小于相同的未穿孔拉伸层压材料的撕裂强度。在一个实施方式中，穿孔拉伸层压材料的撕裂强度在相同的未穿孔拉伸层压材料的约20％内。在另一个实施方式中，穿孔拉伸层压材料的撕裂强度在相同的未穿孔拉伸层压材料的约10％内。在另一个实施方式中，所述穿孔拉伸层压材料的撕裂强度比相同的未穿孔拉伸层压材料小5-12％。在另一个实施方式中(例如，参见图3A)，所述穿孔拉伸层压材料的撕裂强度比相同的未穿孔拉伸层压材料小约7.7％。
开口面积是指穿孔的面积。可以通过扩大或缩小穿孔的直径，或者可以增加或减少穿孔的数量来增大或减小开口面积。在一个实施方式中，所述穿孔拉伸层压材料的开口面积(即，穿孔的面积)可以是在无张力的拉伸层压材料的总表面积约0.5-10.0％(及其子集)的范围内。在其他实施方式中，所述开口面积可以是在0.80-5.0％或0.80-3.0％或0.30-2.0％的范围内。
在一个实施方式中，所述穿孔拉伸层压材料的透气性可以为约50-1,000l/m2/s，及其子集。在其他实施方式中，透气性可以在约10-500l/m2/s或20-100l/m2/s的范围内。所述穿孔拉伸层压材料的渗透性根据例如1995年的ISO标准9237，在200Pa的压力和20cm2的圆形试样下测量。
实施例
以下是本发明的穿孔拉伸层压材料的某些非限制性实施例，参见图3A和3B，与等效的无孔拉伸层压材料相比较。本发明不限于以下实验数据。
测试方法
以下测试方法用于生成数据。
方法1--峰值负荷
横向峰值负荷：在图5中，75mm(3英寸)样品(横机方向)夹在恒定速率伸长拉伸测试仪(传统设备)的钳口101/102之间，所述钳口间距为50mm(2英寸)分开。以508mm/分钟的速率拉动样品直至样品断裂。断裂负荷是峰值负荷。
方法2--撕裂强度
梯形撕裂试验(ASTM D5733-99)：如图6和7所示制备2英寸(50mm)宽的样品104。2英寸的尺寸在样品的机器方向上。在图7中，模板105用于在样品上绘制图案(具有夹线103)，所述图案用于将样品定向在恒定速率伸长拉伸测试仪(常规设备)的钳口中。样品104包括凹口(或切口或狭缝)106，并且所述凹口的长度为15mm。然后将样品夹在恒定速率伸长拉伸测试仪的钳口之间，如图8和9所示(模板的线与钳口的内边缘和钳口之间的凹口对齐)；因此，当拉动样品时，样品将在样品的一个边缘处以一定角度失效。以508mm/分钟的速率拉动样品，直到样品撕裂。撕裂时的负荷是撕裂强度。
拉伸性能比较
在表1中，将本发明的拉伸层压材料的某些拉伸性能与等效的未穿孔拉伸层压材料进行比较。A表示撕裂强度，B表示峰值负荷下的伸长(即断裂前的伸长)；C表示在800g力下的伸长。在表1中，穿孔样品n°1(方法A)和穿孔样品n°2(方法B)具有相同的穿孔图案，并且通过两种不同的穿孔未穿孔层压材料的工艺/方法获得。
可以从这些数据中得出以下观察结果：
1)本发明样品(INV)与现有技术样品(PA)之间的撕裂强度相似，特别是本发明样品仅比PA样品少15％，更特别的是仅少10％，并且INV的平均值较低；
2)INV的峰值伸长明显高于PA。INV具有比PA更高的拉伸。因此，可以在不增加活化量的情况下获得具有更高拉伸的产品。这降低了层压后活化增加的风险，例如撕裂和不受控制的孔形成的风险；
3)在低力下伸长更高。
在表1的末尾，是表示穿孔样品(INV)与未穿孔样品(PA)比较的“间隙比”的线。例如，在“A-撕裂强度”栏中，穿孔样品n°1(方法A)的间隙比为92.30％。该值是通过将15,99(“穿孔样品n°1(方法A)INV”的“A-撕裂强度”的平均值)除以17,33(“未穿孔样品PA”的“A-撕裂强度”的平均值)获得的。
伸长比较
在表2中，比较了三个穿孔样品。每个样品的拉伸层压材料在伸长之前是相同的。拉伸层压材料由三层结构组成，其中两层无纺布夹着弹性薄膜(例如，参见图2B)。一种无纺布的基重为22gsm，另一种无纺布的基重为27gsm。两种无纺布都是梳理无纺布。弹性薄膜的基重为60gsm。粘合剂(每层之间)的基重为12gsm。在伸长之前，穿孔图案是相同的，参见图3A和3B。表2中的样品1、2和3分别对应于处于松弛状态、147％伸长率和160％伸长率的层压材料。
可以从表2的1、2、3中得出以下观察结果：
1)垂直于撕裂方向的方向上的孔尺寸基本上在0-200％的伸长范围内(或在0-160％的伸长范围内或在10-160％的伸长范围内)；
2)当样品沿横机方向拉伸时，孔从圆形伸长到椭圆形，并且孔间距增加(都在横机方向上)。由于孔面积增加，透气性同样增加，但每单位面积的孔数较少；
3)在所述伸长期间，机器方向上的孔尺寸表现为保持不变；
4)松弛后，样品的尺寸为75mm(MD)×100mm(CD)，伸长发生在CD。初始弹性薄膜小于50mm，但在活化后，宽度为80mm。目的是满足透气性目标(通过穿孔(孔)获得，但保持撕裂强度。因此，优选使用每单位面积的最小穿孔数。实现上述目的的一种方法是增加MD中的孔间距，并减少CD中的孔间距(伸长方向)。
根据表2中的数据，可以得出以下结论：
1)在伸长过程中，CD中的孔变宽，孔面积增大，透气性增加；
2)CD中的孔间距增大，这应该增加撕裂强度；
3)MD中的孔间距随着CD中的伸长仅略微降低，因此可以保持MD中的孔间距以用于CD中的伸长。
在不脱离本发明的精神和基本属性的情况下，本发明可以以其他形式实施，因此，在指示本发明的范围时，应当参考所附权利要求书而不是前述说明书。

Claims (25)

1.一种当拉伸层压材料在拉伸方向上拉伸时减少或防止拉伸层压材料撕裂的方法，包括以下步骤：
提供具有穿孔图案的拉伸层压材料，
所述穿孔图案至少有两列，
第一列具有多对穿孔，所述多对穿孔一对堆叠在另一对上方，每对中的穿孔沿第一方向倾斜，第一空间将一对与另一对分开，
第二列具有多对穿孔，所述多对穿孔一对堆叠在另一对上方，每对中的穿孔在第二方向上倾斜，第二空间将一对与另一对分开，以及
所述列之间的第三空间不大于所述对中的穿孔之间的所述第一或第二空间。
2.如权利要求1所述的方法，其中，所述第一列和所述第二列中的所述穿孔对具有高度，并且所述列中的对之间的空间不大于所述穿孔对的高度。
3.如权利要求1所述的方法，其中，所述穿孔对具有高度，而另一列中的对之间的空间大于所述穿孔对的高度。
4.如权利要求1所述的方法，其中，所述第一列中的穿孔对与所述第二列中的穿孔对之间的第二空间对齐。
5.如权利要求1所述的方法，其中，所述拉伸层压材料的开口面积在约0.5-10.0％的范围内。
6.如权利要求1所述的方法，其中，所述拉伸层压材料的透气率在约50-1,000l/m2/s的范围内。
7.如权利要求1所述的方法，其中，所述拉伸层压材料的峰值负荷不小于未穿孔拉伸层压材料的峰值负荷的80％。
8.如权利要求1所述的方法，其中，所述拉伸层压材料在峰值负荷下的伸长大于未穿孔拉伸层压材料在峰值负荷下的伸长。
9.如权利要求1所述的方法，其中，所述拉伸层压材料包括：
第一无纺布和贴附于第一无纺布上的弹性层。
10.如权利要求9所述的方法，其中，所述拉伸层压材料还包括第二无纺布，并且所述弹性层夹在所述第一无纺布和所述第二无纺布之间。
11.如权利要求1所述的方法，其中，所述列中的穿孔对之间的空间(S7)大于或等于所述穿孔对之间的空间(S1)的两倍。
12.如权利要求1所述的方法，其中，所述第一方向和所述第二方向是不同的。
13.一种用于卫生产品的拉伸层压材料，包括：
具有无纺布层和弹性层的层压材料，所述层压材料具有穿孔图案，其中，所述穿孔图案适于抵抗在垂直于拉伸方向的方向上的撕裂。
14.如权利要求13所述的拉伸层压材料，其中，所述穿孔图案具有至少两列，第一列具有多对穿孔，所述多对穿孔一对堆叠在另一对的上方，每对中的穿孔在第一方向上倾斜，第一空间将一对与另一对分开，第二列具有多对穿孔，所述多对穿孔一对堆叠在另一对上方，每对中的穿孔在第二方向上倾斜，第二空间将一对与另一对分开，所述第一方向和所述第二方向不同，并且所述列之间的第三空间不大于所述对中的穿孔之间的所述第一或第二空间。
15.如权利要求14所述的拉伸层压材料，其中，所述第一列和所述第二列中的所述穿孔对具有高度，并且所述列中的对之间的空间不大于所述穿孔对的高度。
16.如权利要求14所述的拉伸层压材料，其中，所述穿孔对具有高度，并且另一列中的对之间的空间大于所述穿孔对的高度。
17.如权利要求14所述的拉伸层压材料，其中，所述第一列中的穿孔对与所述第二列中的穿孔对之间的所述第二空间对齐。
18.如权利要求14所述的拉伸层压材料，其中，所述拉伸层压材料的开口面积在约0.5-10.0％的范围内。
19.如权利要求14所述的拉伸层压材料，其中，所述拉伸层压材料的透气性在约50-1,000l/m2/s的范围内。
20.如权利要求14所述的拉伸层压材料，其中，所述拉伸层压材料的峰值负荷不小于未穿孔拉伸层压材料的峰值负荷的80％。
21.如权利要求14所述的拉伸层压材料，其中，所述拉伸层压材料在峰值负荷下的伸长大于未穿孔拉伸层压材料在峰值负荷下的伸长。
22.如权利要求13所述的方法，其中，所述拉伸层压材料包括：
第一无纺布和贴附于第一无纺布上的弹性层。
23.如权利要求14所述的方法，其中，所述拉伸层压材料还包括第二无纺布，并且所述弹性层夹在所述第一无纺布和所述第二无纺布之间。
24.如权利要求14所述的方法，其中，所述列中的穿孔对之间的空间(S7)大于或等于所述穿孔对之间的空间(S1)的两倍。
25.如权利要求14所述的方法，其中，所述第一方向和所述第二方向是不同的。
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