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WO2019223359A1 - 双向弹性透气材料 - Google Patents

双向弹性透气材料 Download PDF

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Publication number
WO2019223359A1
WO2019223359A1 PCT/CN2019/073650 CN2019073650W WO2019223359A1 WO 2019223359 A1 WO2019223359 A1 WO 2019223359A1 CN 2019073650 W CN2019073650 W CN 2019073650W WO 2019223359 A1 WO2019223359 A1 WO 2019223359A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic
bidirectional
elastic film
unidirectional
bidirectional elastic
Prior art date
Application number
PCT/CN2019/073650
Other languages
English (en)
French (fr)
Inventor
郑元隆
许锡华
Original Assignee
全程兴业股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 全程兴业股份有限公司 filed Critical 全程兴业股份有限公司
Priority to JP2020600105U priority Critical patent/JP3232908U/ja
Priority to US16/638,304 priority patent/US20200223195A1/en
Publication of WO2019223359A1 publication Critical patent/WO2019223359A1/zh

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Definitions

  • the invention relates to a two-way elastic breathable material, in particular to use at least one-way elastic cloth with weft elongation to paste at least two-way elastic film, so as to realize the characteristics of two-way strong resilience and high air permeability.
  • non-woven fabrics from plasticized materials have the advantages of easy manufacturing, processing, good chemical resistance, durability and low cost, they have been widely used in many sanitary products.
  • the non-woven fabric has poor extensibility.
  • the industry has developed a non-woven fabric that can improve the extensibility, which can be called elastic non-woven fabric.
  • the industry has also introduced a multi-layer composite structure to enhance the elastic restoring effect.
  • the elastic film is sandwiched between the upper and lower elastic nonwoven fabrics, thereby providing an elastic band-like function for easy wearing.
  • the prior art has the disadvantage that the elastic film itself has poor air permeability, which will cause the overall air permeability to be greatly reduced, which is not conducive to skin contact.
  • the main object of the present invention is to provide a bidirectional elastic breathable material, which includes a unidirectional elastic cloth and a bidirectional elastic film, wherein the unidirectional elastic cloth is made of polyethylene, polypropylene, polystyrene, polymethyl methacrylate, and polychloride.
  • the bidirectional elastic film is made of a thermoplastic elastomer material
  • TPE-E / S / A, TPO, TPV or TPU and has a plurality of through holes, and the upper surface of the two-way elastic film is fully or partially attached to the lower surface of the unidirectional elastic cloth.
  • the bidirectional elastic film has a weft direction elongation in the weft direction and a warp direction elongation in the warp direction, wherein the weft direction elongation and the warp direction elongation are 100% to 300%.
  • the air permeability of the bidirectional elastic film is 17 to 25 cc / sec per square centimeter
  • the overall air permeability of the bidirectional elastic breathable material is 7 to 10 cc / sec per square centimeter.
  • the ventilation holes of the bidirectional elastic film are aligned or misaligned ventilation holes of the unidirectional elastic cloth.
  • unidirectional elastic cloth has stretchable resilience only in the weft direction and does not have stretchable resilience in the warp direction
  • the two-way elastic film with weft and warp elongation is directly or indirectly bonded Unidirectional elastic cloth, so the overall unidirectional has a strong elastic tensile recovery force in the weft and warp directions.
  • the unidirectional elastic cloth and bidirectional elastic film are highly breathable, which is very suitable for the field of intimate clothing or diapers, improving comfort, and avoiding sweltering, moist, rash or itching.
  • FIG. 1 shows a schematic diagram of a bidirectional elastic breathable material according to a first embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a bidirectional elastic breathable material according to a second embodiment of the present invention.
  • FIG. 3 shows a schematic diagram of a bidirectional elastic breathable material according to a third embodiment of the present invention.
  • FIG. 1 a schematic diagram of a bidirectional elastic breathable material according to a first embodiment of the present invention.
  • the bidirectional elastic breathable material according to the first embodiment of the present invention includes a unidirectional elastic cloth 10 and a bidirectional elastic film 20, and the upper surface of the bidirectional elastic film 20 is fully or partially bonded to the unidirectional elastic cloth.
  • the lower surface of 10 forms a multilayer structure with bidirectional elasticity.
  • FIG. 1 is an exemplary display of partial bonding. Instance.
  • the unidirectional elastic cloth 10 is made of polyethylene (PE), polypropylene (PP), polystyrene (PS), polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), and nylon (Nylon ), Polycarbonate (PC), polytetrafluoroethylene (PTFE) or polylactic acid (PLA), can be a non-woven fabric, and has a plurality of air vents 12, which penetrate the unidirectional elastic fabric 10 Upper and lower surfaces.
  • the unidirectional elastic fabric 10 has an elongation in the weft direction, and the elongation is preferably 150% to 400%.
  • the above-mentioned bidirectional elastic film 20 is made of a thermoplastic elastomer material, such as a thermoplastic polyester (TPE-E), a thermoplastic polystyrene block (TPE-S), a thermoplastic polyamide (Thermoplastic polyamide, TPE-A), Thermoplastic Polyolefin (TPO), Thermoplastic Vulcanizate (TPV) or Thermoplastic Polyurethane (TPU), and has a plurality of breathable holes 22 and penetrates the elastic film 20 Top and bottom surfaces.
  • a thermoplastic elastomer material such as a thermoplastic polyester (TPE-E), a thermoplastic polystyrene block (TPE-S), a thermoplastic polyamide (Thermoplastic polyamide, TPE-A), Thermoplastic Polyolefin (TPO), Thermoplastic Vulcanizate (TPV) or Thermoplastic Polyurethane (TPU), and has a plurality of breathable holes 22
  • the bidirectional elastic film 20 has a zonal elongation in the weft direction and a warp direction elongation in the warp direction, wherein the zonal elongation and the warp elongation are 100% to 300%, and in particular, the bidirectional elastic film 20
  • the air permeability is 17 to 25 cc / sec per square centimeter.
  • the ventilation holes 22 of the bidirectional elastic film 20 can be aligned or misaligned with the ventilation holes 12 of the unidirectional elastic cloth 10, and the permeability of the entire bidirectional elastic breathable material is specifically designed to be 7-10 cc / sec per square centimeter. .
  • the upper surface of the bidirectional elastic film 20 and the lower surface of the unidirectional elastic cloth 10 may be directly bonded to a double-layer structure by ultrasonic fusion or thermal compression fusion, or the bidirectional elastic film 20 and unidirectional The elastic cloths 10 are adhered by coating with an additional adhesive material (not shown).
  • the adhesive material may be styrene / isoprene / styrene (SIS) or styrene / ethylene-butene. / Styrene (SEBS).
  • SIS isoprene / styrene
  • SEBS Styrene
  • Another way is to directly extrude the adhesive material to the unidirectional elastic cloth 10 to form a bidirectional elastic film 20, which can achieve the purpose of lamination at the same time.
  • the unidirectional elastic cloth 10 can have a wavy surface in a local bulge area, which can greatly increase the surface area and expand the application field, and can also improve the cotton feel and the thick feeling caused by the fluffy cloth surface.
  • a schematic diagram of a bidirectional elastic breathable material according to a second embodiment of the present invention is similar to the first embodiment.
  • the main difference is that it additionally includes another unidirectional elastic cloth 30, which is also made of polyethylene, polypropylene, and polystyrene , Polymethyl methacrylate, polyvinyl chloride), nylon, polycarbonate, polytetrafluoroethylene or polylactic acid, and has a plurality of through holes 32 penetrating therethrough, and the upper surface of the other unidirectional elastic cloth 30 is Completely or partially adhered to the lower surface of the bidirectional elastic film 20.
  • the ventilation holes 32 of the other unidirectional elastic cloth 30 are the ventilation holes 22 of the two-way elastic film 20 aligned or misaligned, that is, under the two-way elastic film 20 of the first embodiment.
  • FIG. 3 is a schematic diagram of a bidirectional elastic breathable material according to a third embodiment of the present invention, similar to the second embodiment.
  • the main difference is that it also includes another bidirectional elastic film 40, which is also composed of a thermoplastic elastomer material.
  • the lower surface of the other two-way elastic film 40 is fully or partially attached to the upper surface of the one-way elastic cloth 10, and the other two-way elastic film 40 has a plurality of through-holes 42 passing through it, which can be aligned or misaligned.
  • the ventilation holes 12 of the unidirectional elastic cloth 10 but it should be noted that the figure shows an example in which the ventilation holes 12, the ventilation holes 22, the ventilation holes 42, and the ventilation holes 32 are aligned with each other, and the unidirectional elastic cloth 10, Since the bidirectional elastic film 20, the other bidirectional elastic film 40, and the other unidirectional elastic cloth 30 are all bonded together, there is no wavy structure.
  • vent holes 12, vent holes 22, vent holes 42, and vent holes 32 can be achieved by using needle piercing and needle punching methods. For example, passing through a needle wheel, because the needle on the needle wheel has a high temperature, piercing can be achieved.
  • the purpose is to form a vent hole with a circular ring hole, and the optimal air permeability can be adjusted by changing the hole diameter or the arrangement density.
  • the entire multi-layer elastic breathable material structure is rolled through a set of upper and lower pressure rollers with male and female textures.
  • the high temperature is used to achieve the perforation effect.
  • Glossy rollers flatten the surface.
  • the bidirectional elastic film is bonded to the unidirectional elastic cloth, it is processed into a mesh film with holes, and then bonded to the unidirectional elastic cloth, which can also improve the air permeability.
  • the present invention is characterized in that the unidirectional elastic cloth has resilience only in the weft direction, and the bidirectional elastic film has stretchable resilience in both the weft and warp directions, and the bidirectional elastic film can be directly or The unidirectional elastic cloth is indirectly attached, thus forming an elastic breathable material with two-way resilience.
  • the one-way elastic cloth and two-way elastic film have appropriate air permeability, which is very suitable for use in the fields of intimate clothing, diapers, and sanitary products. Hygiene, comfort, avoid sweltering, damp and rash or itching.

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Abstract

一种双向弹性透气材料，包含单向弹性布（10）和双向弹性薄膜（20），其中单向弹性布（10）具有贯穿的多个透气孔（12），且具纬向延伸率，而双向弹性薄膜（20）是由热塑性弹性体材料构成，也具有贯穿的多个透气孔（22），且在纬向和经向上都具有适当的延伸率，其中双向弹性薄膜（20）的上表面是完全贴合或部分贴合到单向弹性布（10）的下表面。特别的是，双向弹性薄膜（20）的透气性为每平方厘米17～25cc/sec，而双向弹性透气材料的整体透气性是每平方厘米7～10cc/sec。该双向弹性透气材料具有双向延伸性和透气性的优点，适合应用于贴身衣物或尿布，改善舒适感，避免闷热、潮湿。

Description

双向弹性透气材料
相关申请的交叉引用
本申请主张在2018年05月25日在中国提交的中国专利申请号201810516001.X的优先权，其全部内容通过引用包含于此。
技术领域
本发明有关于一种双向弹性透气材料，尤其是利用具有纬向延伸率的至少单向弹性布贴合至少双向弹性薄膜，实现具有双向强力回弹性和高透气性的特点。
背景技术
一般的卫生用品在考虑到卫生及使用安全时，通常会采用一次性或可弃式的使用方式，避免遭受病菌或有害物质的污染，比如口罩、免洗衣裤、婴幼儿尿布或成人尿布。这类产品因为会与皮肤接触一段时间，所以对透气性的要求较为严格，防止因闷热或闷湿所导致的不适感或皮肤过敏、发痒，甚至出疹。
由于来自塑化材料的无纺布具有容易制造、加工、抗化性佳、耐用及成本低廉的优点，已被广泛应用于许多卫生用品。但是无纺布的延伸性较差，对于需要穿戴的应用，比如尿布，会造成使用上的不便，因此，业者已开发出能改善延伸性的无纺布，可称作弹性无纺布。
在现有技术中，一般是对无纺布施以单向拉力，再破坏纤维结构，并在释放原有施力之后，自然回复收缩而形成单向弹性延伸的弹性无纺布。
此外，业者还进一步推出多层的复合结构以加强弹性回复力功效，通常是在上、下层的弹性无纺布中包夹弹性薄膜，由此提供类似松紧带的功能，方便穿戴。然而，现有技术的缺点在于弹性薄膜本身的透气性差，会导致整体的透气性大幅降低，不利于皮肤的接触感受。
因此，非常需要一种创新的双向弹性透气材料，利用具有纬向延伸率的单向弹性布贴合双向弹性薄膜，实现双向弹性和高透气性，适合制作贴身衣 物或尿布，由此解决上述现有技术的所有问题。
发明内容
本发明的主要目的在于提供一种双向弹性透气材料，包括单向弹性布和双向弹性薄膜，其中单向弹性布是由聚乙烯、聚丙烯、聚苯乙烯、聚甲基丙烯酸甲酯、聚氯乙烯、尼龙、聚碳酸酯、聚四氟乙烯或聚乳酸构成，具有贯穿的多个透气孔，且在纬向上具有150％至400％的延伸率，而双向弹性薄膜是由热塑性弹性体材料构成，比如TPE-E/S/A、TPO、TPV或TPU，并具有贯穿的多个透气孔，且双向弹性薄膜的上表面是完全贴合或部分贴合到单向弹性布的下表面。双向弹性薄膜在纬向上具有纬向延伸率，且在经向上具有经向延伸率，其中纬向延伸率和经向延伸率为100％至300％。尤其，双向弹性薄膜的透气性为每平方厘米17～25cc/sec，且双向弹性透气材料的整体透气性是每平方厘米7～10cc/sec。此外，双向弹性薄膜的透气孔是对齐或不对齐单向弹性布的透气孔。
虽然单向弹性布只在纬向上具有可拉伸的回弹性，在经向上不具有可拉伸的回弹性，但是具有纬向延伸率和经向延伸率的双向弹性薄膜是直接或间接贴合单向弹性布，所以整体的单向在纬向和经向上都具有很强的弹性拉伸回复力。另外，单向弹性布、双向弹性薄膜本身都具有很高的透气性，非常适合应用于贴身衣物或尿布的领域，改善舒适感，避免闷热、潮湿而长疹子或发痒。
附图说明
图1显示依据本发明第一实施例双向弹性透气材料的示意图。
图2显示依据本发明第二实施例双向弹性透气材料的示意图。
图3显示依据本发明第三实施例双向弹性透气材料的示意图。
其中，附图标记说明如下：
10单向弹性布
12透气孔
20双向弹性薄膜
22透气孔
30另一单向弹性布
32透气孔
40另一双向弹性薄膜
42透气孔
具体实施方式
以下配合图标及组件符号对本发明的实施方式做更详细的说明，使熟悉本领域的技术人员在研读本说明书后能据以实施。
参考图1，本发明第一实施例双向弹性透气材料的示意图。如图1所示，本发明第一实施例的双向弹性透气材料包括单向弹性布10和双向弹性薄膜20，且双向弹性薄膜20的上表面是完全贴合或部分贴合到单向弹性布10的下表面，形成具双向弹性的多层结构。上述的部分贴合可有多种的实施方式，用以达成矩阵排列的局部性点状贴合、格状贴合、条状贴合，等等，而图1是显示部分贴合的示范性实例。
具体而言，单向弹性布10是由聚乙烯(PE)、聚丙烯(PP)、聚苯乙烯(PS)、聚甲基丙烯酸甲酯(PMMA)、聚氯乙烯(PVC)、尼龙(Nylon)、聚碳酸酯(PC)、聚四氟乙烯(PTFE)或聚乳酸(poly lactic acid，PLA)构成，可为无纺布，并具有多个透气孔12，其贯穿单向弹性布10的上表面和下表面。尤其，单向弹性布10在纬向上具有延伸率，其中延伸率较佳的为150％至400％。
上述的双向弹性薄膜20是由热塑性弹性体材料构成，比如热塑性聚酯(Thermoplastic polyester，TPE-E)、热塑性聚苯乙烯嵌段(Thermoplastic polystyrenic block，TPE-S)、热塑性聚酰胺(Thermoplastic polyamide，TPE-A)、热塑性聚烯烃(Thermoplastic polyolefin，TPO)、热塑性硫化橡胶(Thermoplastic vulcanizate，TPV)或热塑性聚氨基甲酸酯(Thermoplastic polyurethane，TPU)，而且具有多个透气孔22，是贯穿弹性薄膜20的上表面和下表面。双向弹性薄膜20在纬向上具有纬向延伸率，且在经向上具有经向延伸率，其中纬向延伸率和经向延伸率为100％至300％，而特别的是，双向弹性薄膜20的透气性为每平方厘米17～25cc/sec。
此外，双向弹性薄膜20的所述透气孔22可对齐或不对齐单向弹性布10的所述透气孔12，而且整个双向弹性透气材料的透气性是特别设计成每平方厘米7～10cc/sec。
再者，双向弹性薄膜20的上表面和单向弹性布10的下表面可通过超音波融接或热压融接而直接贴合成双层结构，或者，也可在双向弹性薄膜20与单向弹性布10之间利用涂布额外的黏合胶料(图中未显示)而贴合，其中黏合胶料可为苯乙烯/异戊二烯/苯乙烯(SIS)或苯乙烯/乙-丁烯/苯乙烯(SEBS)。另一方式是直接将黏合胶料挤出到单向弹性布10而形成双向弹性薄膜20，可同时实现贴合的目的。
更加具体而言，单向弹性布10可具局部隆起区域的波浪状表面，可大幅增加表面积，扩大应用领域，同时也可提升棉质手感与因布面蓬松产生的厚实感。
接着参考图2，本发明第二实施例双向弹性透气材料的示意图，类似于第一实施例，其主要差异在于额外包括另一单向弹性布30，也是由聚乙烯、聚丙烯、聚苯乙烯、聚甲基丙烯酸甲酯、聚氯乙烯)、尼龙、聚碳酸酯、聚四氟乙烯或聚乳酸构成，并具有贯穿的多个透气孔32，且另一单向弹性布30的上表面是完全贴合或部分贴合到双向弹性薄膜20的下表面。再者，另一单向弹性布30的透气孔32是对齐或不对齐双向弹性薄膜20的透气孔22，亦即，是在第一实施例的双向弹性薄膜20底下。
图3是本发明第三实施例双向弹性透气材料的示意图，类似于第二实施例，其主要差异在于还包括另一双向弹性薄膜40，也是由热塑性弹性体材料构成。另一双向弹性薄膜40的下表面是完全贴合或部分贴合到单向弹性布10的上表面，且另一双向弹性薄膜40具有贯穿的多个透气孔42，是可对齐或不对齐于单向弹性布10的所述透气孔12，而要注意的是，图中是显示透气孔12、透气孔22、透气孔42、透气孔32为相互对齐的实例，而且单向弹性布10、双向弹性薄膜20、另一双向弹性薄膜40、另一单向弹性布30是全部贴合，因此没有波浪状的结构。
上述的透气孔12、透气孔22、透气孔42、透气孔32可利用针扎、针刺方式(Needle Punching)而达成，比如经过针轮，因针轮上的针头具高温，可实 现刺穿目的而形成圆状环孔的透气孔，并可通过改变孔径或排列密度而调整出最佳的透气率。
此外，也可利用热压打孔实现，先将整个多层式弹性透气材料结构经过一组具公母纹路的上下压轮的滚压，在透过高温以实现穿孔效果，之后，经过一组光面压轮而将表面压平。或者，在双向弹性薄膜在未与单向弹性布贴合之前，先加工成具有孔洞的网状膜，之后再贴合到单向弹性布，同样可改善透气性。
综上所述，本发明的特点是在于单向弹性布只在纬向上具有回弹性，而双向弹性薄膜是在纬向和经向上都具有可拉伸的回弹性，并且双向弹性薄膜可直接或间接贴合单向弹性布，因而形成具有双向回弹性的弹性透气材料，尤其，单向弹性布、双向弹性薄膜具有适当的透气性，很适合应用于贴身衣物、尿布、卫生用品的领域，改善卫生、舒适感，避免闷热、潮湿而长疹子或发痒。
以上所述仅为用以解释本发明的较佳实施例，并非企图据以对本发明做任何形式上的限制，因此，凡有在相同的发明精神下所作有关本发明的任何修饰或变更，皆仍应包括在本发明意图保护的范畴。

Claims (6)

  1. 一种双向弹性透气材料，其特征在于，包括：
    单向弹性布，具有贯穿的多个透气孔，并且由聚乙烯(PE)、聚丙烯(PP)、聚苯乙烯(PS)、聚甲基丙烯酸甲酯(PMMA)、聚氯乙烯(PVC)、尼龙(Nylon)、聚碳酸酯(PC)、聚四氟乙烯(PTFE)或聚乳酸(poly lactic acid，PLA)构成，该单向弹性布在纬向具有延伸率，该延伸率为150％至400％；以及
    双向弹性薄膜，是由热塑性弹性体材料构成，并具有贯穿的多个透气孔，该双向弹性薄膜在该纬向具有纬向延伸率，且在经向上具有经向延伸率，该纬向延伸率和该经向延伸率为100％至300％，而该双向弹性薄膜的上表面是完全贴合或部分贴合到该弹性布的一下表面，
    其中，该双向弹性薄膜的透气性为每平方厘米17～25cc/sec，且该双向弹性薄膜的所述透气孔是对齐或不对齐该弹性布的所述透气孔，该双向弹性透气材料的透气性是每平方厘米7～10cc/sec。
  2. 如权利要求1所述的双向弹性透气材料，其特征在于，该热塑性弹性体材料为热塑性聚酯(Thermoplastic polyester，TPE-E)、热塑性聚苯乙烯嵌段(Thermoplastic polystyrenic block，TPE-S)、热塑性聚酰胺(Thermoplastic polyamide，TPE-A)、热塑性聚烯烃(Thermoplastic polyolefin，TPO)、热塑性硫化橡胶(Thermoplastic vulcanizate，TPV)或热塑性聚氨基甲酸酯(Thermoplastic polyurethane，TPU)。
  3. 如权利要求1所述的双向弹性透气材料，其特征在于，该双向弹性薄膜的上表面和该弹性布的下表面是通过黏合胶料而贴合，该黏合胶料为苯乙烯/异戊二烯/苯乙烯(SIS)或苯乙烯/乙-丁烯/苯乙烯(SEBS)。
  4. 如权利要求1所述的双向弹性透气材料，其特征在于，进一步包含另一单向弹性布，该另一单向弹性布的上表面是完全贴合或部分贴合到该双向弹性薄膜的下表面，且该另一单向弹性布是由聚乙烯、聚丙烯、聚苯乙烯、聚甲基丙烯酸甲酯、聚氯乙烯、尼龙、聚碳酸酯、聚四氟乙烯或聚乳酸构成，并具有贯穿的多个透气孔，且所述透气孔是对齐或不对齐该双向弹性薄膜的 所述透气孔。
  5. 如权利要求4所述的双向弹性透气材料，其特征在于，进一步包含另一双向弹性薄膜，且该另一双向弹性薄膜的下表面是完全贴合或部分贴合到该单向弹性布的上表面，该另一双向弹性薄膜是由该热塑性弹性体材料构成，并具有贯穿的多个透气孔，且所述透气孔是对齐或不对齐该单向弹性布的所述透气孔。
  6. 如权利要求5所述的双向弹性透气材料，其特征在于，该另一双向弹性薄膜的透气性为每平方厘米17～25cc/sec。
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