CN106573456A - 发泡成形品增强用无纺布 - Google Patents

发泡成形品增强用无纺布 Download PDF

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Publication number
CN106573456A
CN106573456A CN201580043104.3A CN201580043104A CN106573456A CN 106573456 A CN106573456 A CN 106573456A CN 201580043104 A CN201580043104 A CN 201580043104A CN 106573456 A CN106573456 A CN 106573456A
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Prior art keywords
woven fabrics
resin
enhancing
laminated
expansion
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CN106573456B (zh
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恋田贵史
稻富伸郎
稻富伸一郎
吉田英夫
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Toyobo Co Ltd
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Toyobo Co Ltd
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Priority claimed from JP2014176984A external-priority patent/JP6365875B2/ja
Priority claimed from JP2014186136A external-priority patent/JP6372269B2/ja
Priority claimed from JP2014221455A external-priority patent/JP6409506B2/ja
Application filed by Toyobo Co Ltd filed Critical Toyobo Co Ltd
Priority claimed from PCT/JP2015/074595 external-priority patent/WO2016035732A1/ja
Publication of CN106573456A publication Critical patent/CN106573456A/zh
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    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
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    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
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    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)
  • Woven Fabrics (AREA)

Abstract

本发明的课题在于提供使增强用无纺布的模具设置性进一步提高而有效地使片材发泡成形的增强用无纺布。本发明的发泡成形品增强用无纺布是层叠增强用无纺布层和树脂层而成的发泡成形品增强用无纺布，其在树脂层中使用的树脂的软化点A为20℃以上且60℃以下，无纺布的透气率为30cc/cm2/秒以上且300cc/cm2/秒以下。

Description

发泡成形品增强用无纺布
技术领域
本发明涉及一种发泡成形品增强用无纺布。更详细而言，涉及对用于增强发泡时的模具设置性优异的发泡成形品而言最佳的无纺布。
背景技术
近年来，作为座席等的缓冲材料，广泛使用发泡聚氨酯成形体。一般而言，作为发泡聚氨酯成形体，使用在成形时将增强用无纺布一体化而成的发泡聚氨酯成形体。该增强用无纺布位于发泡聚氨酯成形体与汽车片材的金属弹簧之间，并且担负使金属弹簧的缓冲作用均等地分散、并且保护发泡聚氨酯成形体免受金属弹簧摩擦的作用。在使用该增强用无纺布生产缓冲材料时，首先，依据所要生产的缓冲物形状，冲裁或切割增强用无纺布，进行缝制。进而，开设用于设置在模具上的孔。之后，将上述孔穿过安装于模具的突起、销栓等设置夹具而设置在模具上后，使聚氨酯发泡，生产发泡聚氨酯成形体。
近年来，对于汽车片材赋予各种传感器和功能，因此形状变得复杂，增强用无纺布的缝制等负担变大，使得工时、成本上升。如上所述，向模具上设置增强用无纺布也成为负荷，需要下各种各样的功夫。例如有在增强用无纺布上安装装订机、金属等而活用安装于模具的磁体等的磁力的方法、在增强用无纺布或模具上涂布粘接剂等的方法。
在安装装订机、金属等的方法中，需要预先在模具上安装磁体等的磁力，在改变设计时，存在变更磁体等的安装场所等劳力和成本变高的问题。活用粘接剂的方法存在污染模具的问题。
在专利文献1中提出了通过预先在发泡模具内部准备装配销来设置增强用无纺布的方法。但是，在该方法中，不仅需要在每次发泡形状发生变化时所制作的模具上设置装配销，而且存在在发泡后的拆卸时对增强用无纺布造成损伤的可能性。
在专利文献2中提出预先在增强用无纺布所使用的粘合剂中混入铁粉或铁砂而对增强用无纺布赋予磁性的方法。但是，在该方法中，存在因与金属弹簧的接触导致铁粉或铁砂的脱落而污染车内的风险和异常响声的可能性。进而，还存在难以检测向增强用无纺布中的金属混入、例如增强用无纺布制造工序中使用的针刺的针混入等的问题。
在专利文献3中提出通过在增强用无纺布上安装金属制的金属丝并使其吸附在设置于发泡成形模具的永磁体上来将其安装到模具内的方法。但是，该方法也不仅增加在增强用无纺布上的金属丝安装的工序而且还需要在发泡成形模具中设置永磁体。
现有技术文献
专利文献
专利文献1：日本特开2004-358916号公报
专利文献2：日本特开2001-252930号公报
专利文献3：日本特开2008-194957号公报
发明内容
发明要解决的课题
以往，并未提出不对模具加以改良而使用以往的模具无污染地简单设置增强用无纺布的方法。本发明的课题在于提供以现有技术作为背景使增强用无纺布的模具设置性进一步提高而能够有效地使缓冲材料发泡成形的发泡成型品用增强用无纺布。
用于解决课题的手段
本发明人等为了解决上述课题而进行了深入研究，结果发现：为了使聚氨酯发泡而生产聚氨酯发泡成形体，模具通常升温至60℃以上的温度，并在该温度下将使增强用无纺布与模具粘接的树脂预先涂布在增强用无纺布上，由此可以简单地进行设置，从而达成本发明。
即，本发明如下。
1.一种发泡成形品增强用无纺布，其是层叠增强用无纺布层和树脂层而成的发泡成形品增强用无纺布，在树脂层中使用的树脂的软化点A为20℃以上且60℃以下，无纺布的透气率为30cc/cm2/秒以上且300cc/cm2/秒以下。
2.根据上述1所述的发泡成形品增强用无纺布，其中，在70℃下的与模具的设置性为1.5N/φ22mm以上。
3.一种发泡成形品增强用无纺布，其是层叠增强用无纺布层和树脂层而成的发泡成形品增强用无纺布，在树脂层中使用的树脂的熔点为30℃以上且60℃以下，在树脂层中使用的树脂的熔解能量为40J/g以上且100J/g以下，无纺布的透气率为30cc/cm2/秒以上且300cc/cm2/秒以下。
4.根据上述1～3中任一项所述的发泡成形品增强用无纺布，其中，树脂层隔开间隔地层叠为线状。
5.根据上述1～3中任一项所述的发泡成形品增强用无纺布，其中，树脂层层叠为点状。
发明效果
本发明的发泡成形品增强用无纺布将增强用无纺布层与树脂层层叠，并对该树脂层选定在发泡时的模具的温度下发生软化的树脂。进而，通过使发泡成形品增强用无纺布的透气率保持在一定以上，可以脱除在发泡时产生的气体，并且可以得到美观性良好的缓冲材料。
其结果为：使用以往的模具可将仅实施过缝制的发泡成型品增强用无纺布有效地设置于模具上，得到可以提高操作性的发泡成形品增强用无纺布。
该发泡成形品增强用无纺布在发泡成形后的模具上没有污物，并且对发泡成形品增强用无纺布的成形性也不会带来影响，因此具有能够利用与以往完全相同的方法进行使用的优点。
附图说明
图1为例示出软化点A的测定结果的图。
图2为例示出树脂的熔点的测定结果的图。
具体实施方式
在本发明的发泡成形品增强用无纺布的增强用无纺布层中可以应用以往就已知的全部无纺布，但是优选的是无纺布的抗撕裂强力为20N以上、发泡后的强力(切割发泡后的无纺布层，依据JIS L 1913(2010)测定强力)为10N/cm以上、具有使聚氨酯的渗出减少的密度高的部位的无纺布。
作为构成增强用无纺布层中使用的无纺布的树脂，优选聚酯、聚烯烃、聚酰胺，特别优选通用热塑性树脂中廉价的聚酯、聚烯烃。作为聚酯，可例示：聚对苯二甲酸丁二醇酯(PBT)、聚对苯二甲酸乙二醇酯(PET)、聚萘二甲酸丁二醇酯(PBN)、聚萘二甲酸乙二醇酯(PEN)、聚对苯二甲酸环己烷二甲酯(PCHT)、聚对苯二甲酸丙二醇酯(PTT)等均聚酯及它们的共聚聚酯等。另外，在聚烯烃中可例示聚乙烯、聚丙烯等。
就增强用无纺布层中使用的无纺布的制造方法而言，作为长纤维无纺布，可例示纺粘法、熔喷法等得到的长纤维无纺布；作为短纤维无纺布，可例示：针刺法、水刺法等得到的机械交织的短纤维无纺布，化学粘合法、热粘合法等得到的短纤维无纺布。进而，也可以使用将这些方法复合而得到的无纺布。
作为使用利用纺粘法得到的无纺布的增强用无纺布层，优选的是：将单位面积重量为30～200g/m2、空隙率为90～94％的蓬松的无纺布与单位面积重量为20～100g/m2、空隙率为87～91％的致密的无纺布层叠并利用针刺法使之层叠一体化而成的无纺布层；使用在厚度方向赋予密度差且兼具聚氨酯增强层与聚氨酯发泡时的渗出防止层的针刺纺粘无纺布的一层无纺布层；以及使用由卷缩数为2～40个/25mm、纤维直径为1～30μm的卷缩长纤维无纺布构成且单位面积重量为50～200g/m2、厚度为0.5～2.0mm的纺粘无纺布的无纺布层。
另外，若为短纤维无纺布与纺粘无纺布的复合无纺布层，则优选在由纤维直径为1～23分特的纤维形成且单位面积重量为20～100g/m2的纺粘无纺布的单面或双面层叠短纤维的梳理机纤维网(card web)并利用针刺法使其一体化而成的复合无纺布层。
通过在树脂层中使用软化点A为20℃以上且60℃以下、优选30℃以上且不足55℃、更优选35℃以上且不足50℃的树脂，使模具设置性变得良好。若软化点A不足20℃，则在通常保存状态下粘合性提高，在重叠保存的情况下，操作性变差，根据情况有时完全粘接。若软化点A高于60℃，则在模具温度下的粘接性变得不充分，设置性变差，在作业中产生剥离等问题。为了得到上述范围的软化点A，可以通过使用维卡软化温度为20℃以上且60℃以下的树脂来得到。
只要软化点A为上述的范围，树脂的种类就没有特别限定，可以适合使用乙烯－乙酸乙烯酯共聚物、乙烯－丙烯酸乙酯共聚物、离聚物树脂、聚氨酯树脂或它们的衍生物。
另外，就在树脂层中使用的树脂而言，通过使用利用差示扫描量热测定得到的熔点为30℃以上且60℃以下、优选30℃以上且不足55℃、更优选35℃以上且不足50℃的树脂，使模具设置性变得良好。若熔点不足30℃，则在通常保存状态下粘合性提高，在重叠保存的情况下，操作性变差，根据情况有时完全粘接。若熔点高于60℃，则在模具温度下的粘接性变得不充分，设置性变差，在作业中产生剥离等的问题。
进而，就在树脂层中使用的树脂而言，通过使用利用差示扫描量热测定得到的熔解能量为40J/g以上且100J/g以下、优选45J/g以上且80J/g以下、更优选50J/g以上且80J/g以下的树脂，使模具设置性变得良好。若熔解能量不足40J/g，则因在通常保存状态下的环境变化而使粘合性提高，在重叠保存的情况下，操作性变差，根据情况有时完全粘接。若熔解能量高于100J/g，则产生在对模具的粘接上耗费时间、操作性变差的问题。
只要在树脂层中使用的树脂的熔点及熔解能量为上述的范围，树脂的种类就没有特别限定，可以适合使用乙烯－乙酸乙烯酯共聚物、乙烯－丙烯酸乙酯共聚物、离聚物树脂、聚氨酯树脂或它们的衍生物。
层叠有增强用无纺布和树脂层的发泡成形品增强用无纺布的透气率优选为30cc/cm2/秒以上、更优选为40cc/cm2/秒以上且300cc/cm2/秒以下、进一步优选为50cc/cm2/秒以上且250cc/cm2/秒以下。若透气率不足30cc/cm2/秒，则难以脱除在聚氨酯发泡时产生的气体，在发泡聚氨酯成形体中产生缺陷。另外，若透气率高于300cc/cm2/秒，则聚氨酯从发泡成形品增强用无纺布渗出，有时因与金属弹簧的接触而产生异常响声的问题。
作为在树脂层中使用的树脂量，并无特别限定，优选为10g/m2以上且60g/m2以下、更优选为10g/m2以上且50g/m2以下、进一步优选为15g/m2以上且40g/m2以下。若树脂量不足10g/m2，则有时无法得到充分的发泡成形品增强用无纺布在模具中的设置性，若树脂量多于60g/m2，则有时难以确保透气率。
作为用于层叠树脂层而得到最佳透气率的方法，可以使用树脂挤出层压法、串列挤出层压法、干式层压法、帘式喷涂法等公知的方法。此外，可以使用利用印刷法等的点加工等。使用这些方法所层叠的树脂层的面积率相对于增强用无纺布的面积优选为10％以上且90％以下、更优选为20％以上且80％以下、进一步优选为30％以上且70％以下。若所层叠的树脂层面积率不足10％，则在模具中的设置性变得不充分，若所层叠的树脂层面积率为90％以上，则难以确保透气率。
作为用于使对模具设置性的赋予和透气率更佳的树脂层，优选将树脂隔开间隔地层叠为线状的方法或层叠为点状。在层叠为线状的情况下，树脂的宽度优选为0.3～10mm，树脂间的间隔优选为1～10mm。在层叠为点状的情况下，点形状并无特别限定，可以使用圆形、菱型等。尺寸也并无特别限定，但是按照圆换算计的直径优选为1mm以上且10mm以下。关于配置，可以使用栅格状、交错排列等。
层叠有增强用无纺布和树脂层的发泡成形品增强用无纺布在70℃下的模具设置性可以利用后述的方法求得，优选为1.5N/φ22mm以上、更优选为2.0N/φ22mm以上且不足20.0N/φ22mm。若模具设置性不足1.5N/φ22mm，则在模具设置后的工序中存在增强用无纺布脱落的可能性。另外，若模具设置性高于20.0N/φ22mm，则不仅难以从发泡后模具中取出，而且存在增强用无纺布从发泡后聚氨酯剥离的可能性。
进而，无纺布在30℃下的模具设置性优选为1.5N/φ22mm以下、更优选为1.0N/φ22mm以下。若在30℃下的模具设置性高于1.5N/φ22mm，则以重叠或辊状保存时在各层间发生粘接，操作性变差。
本发明的发泡成形品增强用无纺布并不限于缓冲用途，作为使用模具进行成型的发泡成形品的增强用无纺布，在车辆用的各种内装材、建筑材料、电化制品的表面发泡成形品等用途中也是有用的。
实施例
以下，利用实施例及比较例，对本发明进行更具体地说明，但是本发明并不受其任何限定。
需要说明的是，本发明的实施例及比较例中使用的评价方法按照下述的方法进行。
(1)软化点A(℃)
从增强用无纺布上取样树脂层，使用TA instruments公司制“Q400”，并利用TMA(热机械分析)求得。在插入式探针、载荷0.1N、温度条件－30℃→100℃、升温速度5℃/min、N2气氛下进行探测。如图1所例示那样，将2个切线的交点设为软化点A。
(2)树脂的熔点(℃)
从发泡成形品增强用无纺布上仅采集4～5mg树脂部。此时，在一起采集无纺布的情况下，直接进行测定。装置使用TA instruments公司制Q100并以20℃/min的速度从－70℃升温至120℃。测定在氮气氛下进行。根据图表，将图2所示的基线(20℃－95℃)与切线的交点设为熔点。在图2的情况下，熔点为48.62℃。
(3)树脂的熔解能量(J/g)
根据利用上述(2)记载的测定得到图表，求得熔解能量。在图1的情况下，熔解能量为58.78J/g。
(4)维卡软化温度(℃)
依据JIS K 7206(1999)“塑料－热塑性塑料－维卡软化温度(VST)试验方法”进行了测定。
(5)透气率(cc/cm2/秒)
依据JIS L 1096(2010)“织物及编物的质地试验方法”8.26.1A法(Frazier形法)进行了测定。
(6)在模具中的设置性(N/φ22mm)
将试验片切割成宽度25mm、长度100mm，对其1端，在金属板(SS400扁支杆宽度30mm、长度100mm)的1端使用51.6kPa Kyowa制“Gauge Mate”，在2kgf/φ22mm端子的载荷下于30℃±3℃及70℃±3℃压缩10秒。之后，在岛津制拉伸试验机的卡盘上部设置金属板，并且在卡盘下部设置试验片的相反的1端，以使卡盘间距离为10mm。以拉伸速度100mm/分钟进行拉伸试验，求得最大强度。
(7)在室温30℃下的增强用无纺布的操作性
将切割为20cm×20cm的试验片重叠10片，按照10kg/400cm2施加载荷，在室温30℃的房间内放置24小时。之后，除去重物，按照以下方式评价一片一片取出时的状况。
○：在各层中可无粘接地取出。
×：在各层中发生粘接，难以取出。
(8)树脂层的面积率(％)
利用SEM从树脂层侧拍摄，求出每单位的树脂层的面积，并以百分率来表示。
(9)发泡成形加工性
○：在发泡聚氨酯成形体的表面没有气体的痕迹，整齐地发泡。
×：在发泡聚氨酯成形体的表面有气体的痕迹，存在痘痕状等缺陷。
＜实施例1-1＞
在东洋纺株式会社制无纺布Volans“CRE3080”的白色面侧由T－模头挤出宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7504(乙烯-乙酸乙烯酯共聚物、维卡软化温度42℃)，与上述无纺布的长度方向平行且以2mm的间隔层叠为线状。树脂为20g/cm2。
＜实施例1-2＞
在三井化学株式会社制无纺布Tafnel“ESE444”的单面由T－模头挤出宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7504(乙烯-乙酸乙烯酯共聚物、维卡软化温度42℃)，与上述无纺布的长度方向平行且以2mm的间隔层叠为线状。树脂为30g/cm2。
＜实施例1-3＞
在三井化学株式会社制无纺布Tafnel“ESE444”的单面由T－模头挤出宽度2mm的YASUHARA CHEMICAL株式会社制HIRODINE 7504(乙烯-乙酸乙烯酯共聚物、维卡软化温度42℃)，与上述无纺布的长度方向平行且以2mm的间隔层叠为线状。树脂为30g/cm2。
＜实施例1-4＞
在东洋纺株式会社制无纺布Volans“CRE3080”白色面侧利用丝网印刷将宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7504(乙烯-乙酸乙烯酯共聚物、维卡软化温度42℃)层叠为点状。树脂为20g/cm2。
＜比较例1-1＞
在东洋纺株式会社制无纺布Volans“CRE3080”白色面侧由T－模头挤出宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7536(乙烯-乙酸乙烯酯共聚物、维卡软化温度83℃)，与上述无纺布的长度方向平行且以2mm的间隔层叠为线状。树脂为20g/cm2。
＜比较例1-2＞
在东洋纺株式会社制无纺布Volans“CRE3080”白色面侧以在上述无纺布中达到20g/m2的方式涂布宽1mm的SAIDEN化学株式会社制丙烯酸系树脂ATR－1。上述丙烯酸系树脂即使在常温(20℃)下粘性也高，无法取得树脂层的样品，无法测定软化点A。
＜比较例1-3＞
在东洋纺株式会社制无纺布Volans“CRE3080”白色面侧由T－模头挤出宽度2mm的YASUHARA CHEMICAL株式会社制HIRODINE 7528(乙烯-乙酸乙烯酯共聚物、维卡软化温度40℃)，与上述无纺布的长度方向平行且以0.1mm的间隔层叠为线状。树脂为50g/cm2。
＜比较例1-4＞
在东洋纺株式会社制无纺布Volans“CRE3080”白色面侧由T－模头挤出宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7528(乙烯-乙酸乙烯酯共聚物、维卡软化温度40℃)，与上述无纺布的长度方向平行且以9mm的间隔层叠为线状。树脂为5g/cm2。
实施例1-1～1-4及比较例1-1～1-4所得的发泡成形品增强用无纺布的测得的各物性归纳示于表1。
【表1】
＜实施例2-1＞
在东洋纺株式会社制无纺布Volans“CRE3080”的白色面侧由T－模头挤出宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7528(乙烯-乙酸乙烯酯共聚物、维卡软化温度40℃)，与上述无纺布的长度方向平行且以2mm的间隔层叠为线状。树脂为30g/cm2。
＜实施例2-2＞
在三井化学株式会社制无纺布Tafnel“ESE444”的单面由T－模头挤出宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7528(乙烯-乙酸乙烯酯共聚物、维卡软化温度40℃)，与上述无纺布的长度方向平行且以2mm的间隔层叠为线状。树脂为20g/cm2。
＜实施例2-3＞
在东洋纺株式会社制无纺布Volans“CRE3080”的白色面侧由T－模头挤出宽度2mm的YASUHARA CHEMICAL株式会社制HIRODINE 7504(乙烯-乙酸乙烯酯共聚物、维卡软化温度42℃)，与上述无纺布的长度方向平行且以2mm的间隔层叠为线状。树脂为20g/cm2。
＜实施例2-4＞
在东洋纺株式会社制无纺布Volans“CRE3080”的白色面侧利用丝网印刷将宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7528(乙烯-乙酸乙烯酯共聚物、维卡软化温度40℃)层叠为点状。树脂为20g/cm2。
＜比较例2-1＞
在东洋纺株式会社制无纺布Volans“CRE3080”的白色面侧由T－模头挤出宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7536(乙烯-乙酸乙烯酯共聚物、维卡软化温度83℃)，与上述无纺布的长度方向平行且以2mm的间隔层叠为线状。树脂为20g/cm2。
＜比较例2-2＞
在东洋纺株式会社制无纺布Volans“CRE3080”的白色面侧以使上述无纺布中达到20g/m2的方式涂布宽度1mm的SAIDEN化学株式会社制丙烯酸系树脂ATR－1。上述丙烯酸系树脂即使在常温(20℃)下粘性也高，无法取得层叠树脂的样品，无法测定软化点A。
＜比较例2-3＞
在东洋纺株式会社制无纺布Volans“CRE3080”的白色面侧由T－模头挤出宽度2mm的YASUHARA CHEMICAL株式会社制HIRODINE 7528(乙烯-乙酸乙烯酯共聚物、维卡软化温度40℃)，与上述无纺布的长度方向平行且以0.1mm的间隔层叠为线状。树脂为50g/cm2。
＜比较例2-4＞
在东洋纺株式会社制无纺布Volans“CRE3080”的白色面侧由T－模头挤出宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7528(乙烯-乙酸乙烯酯共聚物、维卡软化温度点40℃)，与上述无纺布的长度方向平行且以9mm的间隔层叠为线状。树脂为5g/cm2。
实施例2-1～2-4及比较例2-1～2-4所得的发泡成形品增强用无纺布的测得的各物性归纳示于表3中。
【表2】
＜实施例3-1＞
在东洋纺株式会社制无纺布Volans“CRE3080”白色面侧由T－模头挤出宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7528(乙烯-乙酸乙烯酯共聚物)，与上述无纺布的长度方向平行且以2mm的间隔层叠为线状。树脂为20g/cm2。
＜实施例3-2＞
在三井化学株式会社制无纺布Tafnel「ESE444」的单面由T－模头挤出宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7528(乙烯-乙酸乙烯酯共聚物)，与上述无纺布的长度方向平行且以2mm的间隔层叠为线状。树脂为30g/cm2。
＜实施例3-3＞
在东洋纺株式会社制无纺布Volans“CRE3080”白色面侧由T－模头挤出宽度2mm的YASUHARA CHEMICAL株式会社制乙烯乙酸乙烯酯共聚物树脂(维卡软化点＝44℃)，与上述无纺布的长度方向平行且以2mm的间隔层叠为线状。树脂为20g/cm2。
＜实施例3-4＞
在东洋纺株式会社制无纺布Volans“CRE3080”白色面侧利用丝网印刷将宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7528(乙烯-乙酸乙烯酯共聚物、)层叠为点状。树脂为20g/cm2。
＜比较例3-1＞
在东洋纺株式会社制无纺布Volans“CRE3080”白色面侧由T－模头挤出宽度1mm的YASUHARA CHEMICAL株式会社制HIRODINE 7536(乙烯-乙酸乙烯酯共聚物)，与上述无纺布的长度方向平行且以2mm的间隔层叠为线状。树脂为20g/cm2。
＜比较例3-2＞
在东洋纺株式会社制无纺布Volans“CRE3080”白色面侧以使上述无纺布中达到20g/m2的方式涂布宽度1mm的SAIDEN化学株式会社制丙烯酸系树脂ATR－1。即使在常温(20℃)下粘性也高，无法取得树脂层的样品，无法测定熔点。
＜比较例3-3＞
在东洋纺株式会社制无纺布Volans「CRE3080」白色面侧由T－模头挤出宽度2mm的YASUHARA CHEMICAL株式会社制HIRODINE 7528(乙烯-乙酸乙烯酯共聚物)，与上述无纺布的长度方向平行且以0.1mm的间隔层叠为线状。树脂为50g/cm2。
实施例3-1～3-4及比较例3-1～3-3所得的发泡成形品增强用无纺布的测得的各物性归纳示于表3中。
【表3】
产业上的可利用性
本发明的发泡成形品增强用无纺布不对模具加以改良便能使用以往的模具且不污染模具地简单将发泡成形品增强用无纺布设置于模具上，因此能够简化从缝制到发泡成形的工序，可以大幅改善生产率，对产业界的贡献大。

Claims (5)

1.一种发泡成形品增强用无纺布，其是层叠增强用无纺布层和树脂层而成的发泡成形品增强用无纺布，在树脂层中使用的树脂的软化点A为20℃以上且60℃以下，无纺布的透气率为30cc/cm2/秒以上且300cc/cm2/秒以下。
2.根据权利要求1所述的发泡成形品增强用无纺布，其中，在70℃下的与模具的设置性为1.5N/φ22mm以上。
3.一种发泡成形品增强用无纺布，其是层叠增强用无纺布层和树脂层而成的发泡成形品增强用无纺布，在树脂层中使用的树脂的熔点为30℃以上且60℃以下，在树脂层中使用的树脂的熔解能量为40J/g以上且100J/g以下，无纺布的透气率为30cc/cm2/秒以上且300cc/cm2/秒以下。
4.根据权利要求1～3中任一项所述的发泡成形品增强用无纺布，其中，树脂层隔开间隔地层叠为线状。
5.根据权利要求1～3中任一项所述的发泡成形品增强用无纺布，其中，树脂层层叠为点状。
CN201580043104.3A 2014-09-01 2015-08-31 发泡成形品增强用无纺布 Expired - Fee Related CN106573456B (zh)

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