JP6509672B2 - Laminated fabric, seam tape and repair patch, and medical outer garment - Google Patents
Laminated fabric, seam tape and repair patch, and medical outer garment Download PDFInfo
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- JP6509672B2 JP6509672B2 JP2015158273A JP2015158273A JP6509672B2 JP 6509672 B2 JP6509672 B2 JP 6509672B2 JP 2015158273 A JP2015158273 A JP 2015158273A JP 2015158273 A JP2015158273 A JP 2015158273A JP 6509672 B2 JP6509672 B2 JP 6509672B2
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- 239000004744 fabric Substances 0.000 title claims description 158
- 230000008439 repair process Effects 0.000 title claims description 36
- 239000000853 adhesive Substances 0.000 claims description 74
- 230000001070 adhesive effect Effects 0.000 claims description 74
- 229920005749 polyurethane resin Polymers 0.000 claims description 55
- 229920000515 polycarbonate Polymers 0.000 claims description 45
- 239000004417 polycarbonate Substances 0.000 claims description 45
- 229920005989 resin Polymers 0.000 claims description 43
- 239000011347 resin Substances 0.000 claims description 43
- 230000001954 sterilising effect Effects 0.000 claims description 36
- 238000004659 sterilization and disinfection Methods 0.000 claims description 34
- 238000005406 washing Methods 0.000 claims description 34
- 229920000728 polyester Polymers 0.000 claims description 22
- 230000004888 barrier function Effects 0.000 claims description 21
- 241000700605 Viruses Species 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 229920006264 polyurethane film Polymers 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 6
- 239000002473 artificial blood Substances 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
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- 238000004078 waterproofing Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 238000004900 laundering Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 239000008280 blood Substances 0.000 description 8
- 210000004369 blood Anatomy 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- 239000012790 adhesive layer Substances 0.000 description 7
- 238000009472 formulation Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
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- 239000004814 polyurethane Substances 0.000 description 5
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- 239000004721 Polyphenylene oxide Substances 0.000 description 4
- 229920000570 polyether Polymers 0.000 description 4
- 230000002940 repellent Effects 0.000 description 4
- 239000005871 repellent Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 230000009194 climbing Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
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- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
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- 150000002148 esters Chemical class 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- 239000011342 resin composition Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Landscapes
- Adhesives Or Adhesive Processes (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Laminated Bodies (AREA)
Description
本発明は、医療用途に好適な積層布帛、及びそれを用いてなるシームテープ、リペアパッチ、さらには当該シームテープ、リペアパッチを備えてなる医療用外衣に関するものである。 The present invention relates to a laminated fabric suitable for medical use, and a seam tape and a repair patch using the same, and further a medical outer coat comprising the seam tape and the repair patch.
従来より、スキーや登山等に用いる防水性衣料製品は、防水性生地を用いて縫製され、その縫い目に防水性シームテープを貼着してなるものが知られている（特許文献１）。特許文献１では、防水性シームテープは、どのような防水性衣料製品にも適用しうるものとして提案されている。 2. Description of the Related Art Conventionally, waterproof clothing products used for skiing, mountain climbing, etc. are sewn using waterproof fabrics, and those obtained by sticking waterproof seam tapes on the seams are known (Patent Document 1). In Patent Document 1, a waterproof seam tape is proposed as being applicable to any waterproof garment product.
防水性衣料製品は、スキーや登山等に用いられるだけでなく、医療用外衣にも用いられている。すなわち、手術の際に用いる医療用外衣は、看者の血液、細菌又はウイルス等が付着してもそれが内部に侵入しないように、防水性生地を用いて縫製されているのである。そして、医療用外衣の縫い目には、従来の防水性衣料製品と同様に、防水性シームテープが貼着されている。 Waterproof clothing products are used not only for skiing and mountain climbing but also for medical outerwear. That is, the medical outerwear used at the time of surgery is sewn using waterproof cloth so that the blood, bacteria, virus, etc. of the viewer will not intrude even if it adheres to the inside. And, on the seam of the medical outer garment, a waterproof seam tape is pasted in the same manner as a conventional waterproof garment.
医療用外衣の場合、スキーや登山等に用いる防水性衣料製品と異なるのは、洗濯及び滅菌処理が使用毎に頻繁に繰り返されることにある。医療用外衣に洗濯及び滅菌処理が毎日のように繰り返されると、生地に貼着されているシームテープが剥離し、縫い目箇所の防水性能（耐水圧）が低下する。したがって、洗濯耐久性及び滅菌処理耐久性に優れた医療用外衣とするためには、シームテープと生地との接着強力を高くする必要がある。 In the case of medical clothing, the difference from waterproof clothing products used for skiing, mountain climbing, etc. is that washing and sterilization processes are repeated frequently with each use. When washing and sterilizing treatment is repeated daily on a medical garment, the seam tape attached to the fabric is peeled off, and the waterproof performance (water pressure resistance) at the seam location is reduced. Therefore, in order to obtain a medical outerwear excellent in washing durability and sterilization processing durability, it is necessary to increase the bonding strength between the seam tape and the fabric.
そこで、この点を改良する発明として、特許文献２に、生地との貼着面に感熱性ポリカーボネート系ポリウレタン接着剤を使用したシームテープ及びリペアパッチと、それらを貼着した医療用外衣とが提案されている。 Therefore, as an invention for improving this point, Patent Document 2 proposes a seam tape and a repair patch using a heat-sensitive polycarbonate-based polyurethane adhesive on the adhesive surface with the fabric, and a medical outerwear having these adhesively attached. It is done.
上記特許文献２によれば、当該医療用外衣は、洗濯、滅菌処理を繰り返しても、シームテープ等の貼着箇所における耐水圧が低下し難く、一定水準の耐久性を満たすことが実施例で実証されている。 According to Patent Document 2 described above, it is difficult to reduce the water pressure resistance at the attachment portion such as a seam tape even when the medical outer garment is repeatedly washed and sterilized, and the embodiment can meet a certain level of durability. It has been demonstrated.
しかし、シームテープ等は、通常、生地に貼着させるための接着剤と、その接着剤を支えるための基布と、必要に応じて防水膜、透湿膜なども備えており、洗濯及び湿熱滅菌処理が繰り返されると、当然のことながらシームテープ等本体にも少なからず影響が及ぶ。したがって、シームテープ等を貼着した外衣の耐久性を検討するときは、シームテープ等内部の界面剥離についても併せて検討する必要がある。しかし、特許文献２記載の発明では、シームテープ等本体と生地との接着強力については検討されているものの、シームテープ等内部の接着強力については検討されていない。 However, seam tapes and the like usually have an adhesive for adhering to a fabric, a base fabric for supporting the adhesive, and a waterproof film, a moisture-permeable film, etc. as necessary, and are used for washing and moist heat. When the sterilization process is repeated, naturally, the main body such as a seam tape is affected to some extent. Therefore, when examining the durability of the outer coating to which the seam tape or the like is attached, it is necessary to also consider the interfacial peeling within the seam tape or the like. However, in the invention described in Patent Document 2, although the adhesive strength between the main body of the seam tape or the like and the fabric is examined, the adhesive strength inside the seam tape or the like is not examined.
本発明者らは、シームテープ等内部の界面剥離について検討したところ、シームテープ等内部の膜が界面剥離すると、そこを起点にして血液やウイルス等が浸入し易くなり、医療用外衣として衛生的に使用することが困難となることを見出した。さらに、外衣の耐水圧は、シームテープ等本体と生地とが強く接着していれば、シームテープ等内部に多少界面剥離が生じても、大きく低下することはなく、単に外衣としての防水性能が良好だからといって直ちに当該界面剥離が生じていないとまではいえないということを見出した。 The present inventors examined interfacial peeling inside a seam tape etc. When interfacial peeling of a membrane inside a seam tape etc. starts from there, blood, viruses etc. easily infiltrate and it is hygienic as a medical outer coat It was found to be difficult to use. Furthermore, the water pressure resistance of the outer coating does not decrease significantly even if interfacial peeling occurs inside the seam tape etc. if the main body of the seam tape etc. is strongly adhered to the fabric, and the waterproof performance as the outer coating is not It was found that it was not possible to say immediately that the interfacial peeling did not occur even though it was good.
したがって、本発明の課題は、洗濯及び湿熱滅菌処理を繰り返しても膜が界面剥離し難く、一定水準の血液バリア性及びウイルスバリア性を有し、シームテープやリペアパッチとしたときや、それらを備える医療用外衣として使用したときなどに、衛生的かつ耐久性よく使用できる積層布帛を提供することにある。 Therefore, the subject of the present invention is that the membrane does not peel off easily even after repeated washing and moist heat sterilization processing, and has a certain level of blood barrier property and virus barrier property, and when it is used as a seam tape or repair patch, An object of the present invention is to provide a laminated fabric which can be used hygienically and durablely, when used as a medical outer covering provided.
本発明は、積層布帛内の感熱性樹脂膜と防水膜との接着強力を強化することにより上記課題を解決したものである。すなわち、本発明は、ポリカーボネート系ポリウレタン樹脂を主体とする感熱性樹脂膜、接着剤、防水膜、接着剤及び基布の順で積層一体化された積層布帛であって、前記した基布はポリエステル布帛であり、前記した接着剤はいずれもポリカーボネート系ポリウレタン樹脂を主体とする接着剤であり、前記した防水膜はポリカーボネート系ポリウレタン樹脂を主体とするポリウレタン膜であり、前記積層布帛は、工業洗濯・湿熱滅菌処理を５０回繰り返した後において、ＡＳＴＭ Ｆ１６７０に合格する人工血液バリア性とＡＳＴＭ Ｆ１６７１に合格するウイルスバリア性とを有することを特徴とする積層布帛に関するものである。 The present invention solves the above-mentioned problems by strengthening the adhesive strength between the heat-sensitive resin film and the waterproof film in the laminated fabric. That is, the present invention is a laminated fabric in which a thermosensitive resin film mainly composed of a polycarbonate-based polyurethane resin, an adhesive, a waterproof film, an adhesive and a base fabric are laminated and integrated in this order, and the base fabric is polyester The adhesive is a fabric, and all of the above-mentioned adhesives are adhesives composed mainly of a polycarbonate-based polyurethane resin, the above-mentioned waterproof film is a polyurethane film composed mainly of a polycarbonate-based polyurethane resin, and the above-mentioned laminated fabric is an industrial laundry The present invention relates to a laminated fabric characterized by having an artificial blood barrier property that passes ASTM F1670 and a virus barrier property that passes ASTM F1671 after repeated wet heat sterilization processing 50 times.
また、本発明の積層布帛は、シームテープ及びリペアパッチに好適に使用できるものである。そして、かかるシームテープ又はリペアパッチは、各種生地の縫い目又は損傷部に適用でき、そのシームテープ又はリペアパッチを備えた生地は医療用外衣として好適に使用できるものである。特に本発明では、積層布帛と生地との接着強力を向上させるために、積層布帛と生地間の接着剤として特定組成の感熱性樹脂膜を用いると共に、積層布帛と生地の構成を近似させ、その剛性等に差異が生じにくいようにして、積層布帛と生地間に過大な外力が負荷されにくいようにした。さらに、積層布帛内部の界面剥離を抑えるために、感熱性樹脂膜と防水膜とを特定組成の接着剤で貼着した。 In addition, the laminated fabric of the present invention can be suitably used for a seam tape and a repair patch. And such a seam tape or repair patch can be applied to a seam or a damaged portion of various fabrics, and the fabric provided with the seam tape or repair patch can be suitably used as a medical outer garment. In particular, in the present invention, in order to improve the adhesion strength between the laminated fabric and the fabric, a thermosensitive resin film of a specific composition is used as an adhesive between the laminated fabric and the fabric, and the configurations of the laminated fabric and the fabric are approximated. By making it difficult to make a difference in rigidity etc., it was made difficult to apply an excessive external force between the laminated fabric and the fabric. Furthermore, in order to suppress interfacial peeling inside the laminated fabric, the heat-sensitive resin film and the waterproof film were attached with an adhesive of a specific composition.
本発明の積層布帛では、感熱性樹脂膜と防水膜との間を接着するにあたり、ポリカーボネート系ポリウレタン樹脂を主体とする接着剤を使用する。これにより、感熱性樹脂膜と防水膜との界面における接着強力を上げている。さらに本発明では、感熱性樹脂膜と防水膜との間の接着剤と、防水膜と基布との間の接着剤とを同じ組成のものとすることにより、局部的に接着強力の弱い部分を減らし、積層布帛全体として界面剥離し難いものとしている。このため、耐久性に優れる血液バリア性及びウイルスバリア性を発揮する。 In the laminated fabric of the present invention, an adhesive composed mainly of a polycarbonate-based polyurethane resin is used to bond the heat-sensitive resin film and the waterproof film. Thereby, the adhesive strength at the interface between the heat-sensitive resin film and the waterproof film is increased. Furthermore, in the present invention, the adhesive strength between the heat-sensitive resin film and the waterproof film and the adhesive between the waterproof film and the base fabric have the same composition, so that the locally weak adhesive strength portion As a whole, the laminated fabric is difficult to be peeled off at the interface. For this reason, the blood barrier property and virus barrier property which are excellent in durability are exhibited.
さらに、本発明の積層布帛は、防水膜、接着剤及び感熱性樹脂膜のいずれにも、ポリカーボネート系ポリウレタン樹脂を主体とするものを用いているので、布帛全体として滅菌処理（高圧湿熱滅菌）に対する耐久性にも優れるという効果を奏する。 Furthermore, since the laminated fabric of the present invention uses a polycarbonate-based polyurethane resin as the main component for the waterproof film, the adhesive and the heat-sensitive resin film, the entire fabric is subjected to sterilization treatment (high pressure, moist heat sterilization). The durability is also excellent.
そして、本発明の積層布帛は、シームテープ及びリペアパッチに好適であり、それらを備えた医療用外衣としても好適に使用できる。本発明にかかる医療用外衣に用いられている生地及びシームテープ等は、いずれも、ポリエステル布帛、ポリカーボネート系ポリウレタン樹脂を主体とする接着剤及びポリカーボネート系ポリウレタン樹脂を主体とするポリウレタン膜を積層一体化したものである。したがって、生地とシームテープ等の剛性が同等であり、特に洗濯時に生地とシームテープ間に過大な外力が負荷されにくいため、シームテープ等が剥離しにくく、洗濯耐久性に優れるという効果を奏する。 And the laminated fabric of this invention is suitable for a seam tape and a repair patch, It can be conveniently used also as a medical outer garment provided with them. The fabric, the seam tape and the like used in the medical outer covering according to the present invention are all integrally laminated with a polyester fabric, an adhesive composed mainly of a polycarbonate based polyurethane resin, and a polyurethane film composed mainly of a polycarbonate based polyurethane resin. It is Therefore, the rigidity of the fabric and the seam tape is equal, and an excessive external force is not particularly applied between the fabric and the seam tape at the time of washing, so that the seam tape or the like is difficult to peel and the washing durability is excellent.
また、生地及びシームテープ等が同様の構成及び性能を持っているため、生地のみが高性能であるとか、シームテープのみが高性能であるといったことはない。すなわち、医療用外衣に用いられている一部の素材が過剰品質になることを防止しうるという効果を奏する。なお、シームテープを例にあげて説明したが、リペアパッチの場合も、これと同様の効果を奏する。 In addition, since the fabric, the seam tape and the like have the same configuration and performance, there is no case that only the fabric is high-performance or only the seam tape is high-performance. That is, it is effective in the ability to prevent that the one part raw material used for medical outerwear becomes excess quality. Although the seam tape has been described as an example, in the case of the repair patch, the same effect can be obtained.
以下、本発明について詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明の積層布帛１１は、ポリカーボネート系ポリウレタン樹脂を主体とする感熱性樹脂膜１、接着剤２、防水膜３、接着剤４及び基布５の順で積層一体化されたものである。
感熱性樹脂膜１は、熱可塑性ポリカーボネート系ポリウレタン樹脂を主体とするものであり、例えば、溶剤に溶解させたポリカーボネート系ポリウレタン樹脂溶液を離型紙表面に公知の手段で塗布し、溶剤を蒸発させることにより形成できる。樹脂膜１を形成した後は、接着剤２を介して防水膜３に貼合して積層一体化すればよい。
The laminated fabric 11 of the present invention is integrally laminated in the order of the heat-sensitive resin film 1 mainly composed of a polycarbonate-based polyurethane resin, the adhesive 2, the waterproof film 3, the adhesive 4 and the base fabric 5.
The heat-sensitive resin film 1 is mainly composed of a thermoplastic polycarbonate-based polyurethane resin, and for example, a polycarbonate-based polyurethane resin solution dissolved in a solvent is applied to the surface of a release paper by a known means to evaporate the solvent. It can be formed by After the resin film 1 is formed, it may be bonded to the waterproof film 3 through the adhesive 2 to be laminated and integrated.
感熱性樹脂膜１の厚みは、好ましくは５０〜２００μｍであり、より好ましくは６０〜１５０μｍである。ポリカーボネート系ポリウレタン樹脂を主体とする感熱性樹脂膜１は、例えば、図３に例示するように、積層布帛中の樹脂膜１を生地１２の縫い目１３又は生地１２表面に向けて貼着されるから、接着開始温度が１２０〜１７０℃程度のものを用いるのが好ましい。 The thickness of the heat-sensitive resin film 1 is preferably 50 to 200 μm, and more preferably 60 to 150 μm. For example, as illustrated in FIG. 3, the heat-sensitive resin film 1 mainly composed of a polycarbonate-based polyurethane resin is stuck to the surface of the cloth 12 or the seam 13 of the cloth 12 as the resin film 1 in the laminated cloth It is preferable to use one having an adhesion start temperature of about 120 to 170 ° C.
感熱性樹脂膜１はポリカーボネート系ポリウレタン樹脂のみで構成されていてもよいが、洗濯耐久性及び滅菌処理耐久性に影響のない、例えば０〜３０質量％の範囲で、その他のポリエステル系ポリウレタン樹脂又はポリエーテル系ポリウレタン樹脂等を混合してもよい。すなわち、ポリカーボネート系ポリウレタン樹脂の接着開始温度よりも低い接着開始温度を持つ熱可塑性ポリエステル系ポリウレタン樹脂等を混合しておくことによって、熱溶融して接着する際の流動性を高めることができる。これにより、例えば積層布帛１１をシームテープ又はリペアパッチとして使用する際、これらを生地１２の縫い目１３又は生地１２表地に貼着するとき、接着対象となる部位の凹凸に沿って感熱性樹脂膜１が追随して隙間を埋め、より接着強力を高める効果が期待される。なお、生地１２の表地がポリエステル布帛であるため、他の樹脂としてポリエステル系ポリウレタン樹脂を用いるのが好ましい。 The heat-sensitive resin film 1 may be made of only a polycarbonate-based polyurethane resin, but other polyester-based polyurethane resins or other polyester-based polyurethane resins having no influence on washing durability and sterilization treatment durability, for example, in the range of 0 to 30% by mass You may mix a polyether-type polyurethane resin etc. That is, by mixing a thermoplastic polyester-based polyurethane resin or the like having an adhesion start temperature lower than the adhesion start temperature of the polycarbonate-based polyurethane resin, it is possible to improve the flowability at the time of heat melting and bonding. Thus, for example, when the laminated fabric 11 is used as a seam tape or a repair patch, the thermosensitive resin film 1 is formed along the unevenness of the portion to be adhered when the laminated fabric 11 is attached to the seam 13 or the fabric 12 surface of the fabric 12 It is expected that it will follow up and fill in the gap and increase the adhesive strength. In addition, since the outer fabric of the fabric 12 is a polyester fabric, it is preferable to use polyester-based polyurethane resin as another resin.
防水膜３は、ポリカーボネート系ポリウレタン樹脂を主体とするポリウレタン膜である。一般的に、ポリカーボネート系ポリウレタンプレポリマーを高分子量化するタイプのポリウレタン膜が用いられる。ポリカーボネート系ポリウレタン樹脂が用いられる理由は、滅菌処理（高圧湿熱滅菌）に対して耐久性が良好だからである。また、言うまでもなく、ポリウレタン膜はポリカーボネート系ポリウレタン樹脂のみではなく、その他の前記したポリウレタン樹脂が混合されていてもよい。防水膜３は従来公知の方法で得られ、たとえば、溶剤に溶解させたポリカーボネート系ポリウレタン樹脂溶液を離型紙表面に塗布し、溶剤を蒸発させることにより得ることができる。 The waterproof film 3 is a polyurethane film mainly made of a polycarbonate-based polyurethane resin. In general, a polyurethane film of a type in which the polycarbonate polyurethane prepolymer is polymerized is used. The polycarbonate-based polyurethane resin is used because its durability to sterilization treatment (high pressure, moist heat sterilization) is good. Moreover, it goes without saying that the polyurethane film may be a mixture of not only the polycarbonate polyurethane resin but also the other polyurethane resins described above. The waterproof film 3 is obtained by a conventionally known method, and can be obtained, for example, by applying a polycarbonate-based polyurethane resin solution dissolved in a solvent on the surface of a release paper and evaporating the solvent.
防水膜３の厚みは、５〜３０μｍ程度が一般的であり、好ましくは７〜２０μｍである。５μｍ未満では、防水性の耐久性に難点があり、３０μｍを超えると、防水性が過度に付与されるのみで、逆に透湿性、風合い及びコストに難点を生じやすい。 The thickness of the waterproof film 3 is generally about 5 to 30 μm, preferably 7 to 20 μm. If it is less than 5 μm, there is a problem in the durability of the waterproofness, and if it exceeds 30 μm, the waterproofness is only excessively imparted, and conversely, the moisture permeability, the texture and the cost tend to easily occur.
接着剤２及び４は、ポリカーボネート系ポリウレタン樹脂を主体とする接着剤である。一般的に、ポリカーボネート系ポリウレタンポリオールを、ジフェニルメタンジイソシアネート等のイソシアネート系架橋剤で架橋するタイプの接着剤が用いられる。これは、架橋硬化によって耐久性が向上するからである。接着剤２及び４は、全面に設けられていてもよく、ドット状で設けられてもよい。中でも洗濯耐久性や滅菌耐久性、さらにはウイルスバリア性や血液バリア性等を考慮すると、全面接着とすることが好ましい。ただし、接着剤２及び４が全面状に設けられていると、一般に透湿性が阻害され易くなる。しかしながら、積層布帛を医療用のシームテープ又はリペアパッチとした場合に限れば、それらは医療用外衣に部分的に適用されるに過ぎないから、シームテープ又はリペアパッチの透湿性が阻害されたとしても、外衣全体としての透湿性が大きく損なわれる訳ではないから、接着剤を全面接着としても何ら差し支えない。 Adhesives 2 and 4 are adhesives based on polycarbonate-type polyurethane resin. Generally, an adhesive of a type which crosslinks a polycarbonate-based polyurethane polyol with an isocyanate-based crosslinking agent such as diphenylmethane diisocyanate is used. This is because the crosslink curing improves the durability. Adhesives 2 and 4 may be provided on the entire surface, or may be provided in the form of dots. Above all, in consideration of the durability against washing, the durability against sterilization, the virus barrier property, the blood barrier property and the like, it is preferable to use the entire surface adhesion. However, if the adhesives 2 and 4 are provided on the entire surface, moisture permeability is generally easily inhibited. However, as long as the laminated fabric is a medical seam tape or a repair patch, they are only partially applied to the medical outer coat, and the moisture permeability of the seam tape or the repair patch is impaired. Also, since the moisture permeability of the entire outer garment is not largely impaired, the adhesive may be entirely adhered.
ここで、接着剤４の厚みとしては１０〜６０μｍ程度でよく、１５〜５０μｍが好ましい。１０μｍ未満では、基布の表面形状にもよるが、基布と防水膜とを強固に接着することが困難となり易い。一方、６０μｍを超える厚みとしたところで、さらなる耐久性の向上には寄与し難く、かつ、風合い硬化を招きやすいので好ましくない。 Here, the thickness of the adhesive 4 may be about 10 to 60 μm, preferably 15 to 50 μm. If the thickness is less than 10 μm, it may be difficult to firmly bond the base fabric and the waterproof film, although it depends on the surface shape of the base fabric. On the other hand, when the thickness is more than 60 μm, it is difficult to contribute to the further improvement of the durability, and it is not preferable because it tends to cause hardening of feeling.
接着剤２及び４においてポリカーボネート系ポリウレタン樹脂が用いられる理由は、これが医療用外衣に適用される滅菌処理（高圧湿熱滅菌）に対して耐久性が良好だからである。接着剤２及び４は、ポリカーボネート系ポリウレタン樹脂のみではなく、その他のポリウレタン樹脂が混合されていてもよい。その他のポリウレタン樹脂としては、公知のポリエーテル系ポリウレタン樹脂、ポリエステル系ポリウレタン樹脂又はポリエーテルエステル系ポリウレタン樹脂が用いられる。 The reason why a polycarbonate-based polyurethane resin is used in the adhesives 2 and 4 is that the polyurethane-based polyurethane resin is excellent in durability against sterilization treatment (high pressure, moist heat sterilization) applied to a medical outer coat. The adhesives 2 and 4 may be mixed with other polyurethane resins as well as the polycarbonate polyurethane resin. As other polyurethane resins, known polyether polyurethane resins, polyester polyurethane resins or polyether ester polyurethane resins are used.
本発明では、感熱性樹脂膜１と防水膜３とを接着剤２を用いて貼着している点に特徴がある。感熱性樹脂膜は、前記のように、例えば、溶剤に溶解させたポリカーボネート系ポリウレタン樹脂溶液を離型紙上に公知の手段で塗布し、溶剤を蒸発させることにより得られる。この場合、感熱性樹脂膜１と防水膜３とを直接的に貼着するのであれば、感熱性樹脂膜形成後、加熱により防水膜３に貼合すれば、両膜を簡単に積層一体化できるし、感熱性樹脂膜を押出ラミネートすることによっても、両膜を直接的に貼着できる。しかし、両膜を直接的に貼着した場合、両膜は同種の樹脂組成に由来する親和力のみで貼着する。この場合、ある程度の接着強力は期待できるものの、洗濯及び湿熱滅菌処理が繰り返されると、両膜の剛性等の違いが顕在化し、防水膜と感熱性樹脂膜とが界面剥離することとなる。そうすると、界面剥離した箇所から血液やウイルス等が浸入し、結果、積層布帛を衛生的に使用することが困難となる。そこで本発明では、感熱性樹脂膜と防水膜とを接着強力に優れる接着剤を用いて貼着する。これにより、洗濯、滅菌処理による負荷を過度に受けた場合でも両膜の剥離を抑えることができる。 The present invention is characterized in that the heat-sensitive resin film 1 and the waterproof film 3 are adhered using an adhesive 2. As described above, the heat-sensitive resin film can be obtained, for example, by applying a polycarbonate-based polyurethane resin solution dissolved in a solvent onto a release paper by a known means and evaporating the solvent. In this case, if the heat-sensitive resin film 1 and the waterproof film 3 are directly attached, the heat-sensitive resin film is formed, and then the heat-resistant resin film 1 is attached to the waterproof film 3 by heating. Both films can be stuck directly by extrusion laminating the heat-sensitive resin film. However, when both films are directly bonded, both films are bonded only with the affinity derived from the same resin composition. In this case, although a certain degree of adhesion strength can be expected, when the washing and wet heat sterilization processing is repeated, the difference in rigidity or the like of the two films becomes apparent, and the waterproof film and the heat sensitive resin film are peeled off at the interface. As a result, blood, viruses and the like infiltrate from the interface-peeled part, and as a result, it becomes difficult to hygienically use the laminated fabric. Therefore, in the present invention, the heat-sensitive resin film and the waterproof film are adhered using an adhesive excellent in adhesion strength. This makes it possible to suppress the peeling of both films even when the load due to washing and sterilization is excessively received.
接着剤２の厚みとしては、５〜４０μｍ程度でよく、８〜３０μｍが好ましい。５μｍ未満では、両膜を強固に貼着することが困難となる傾向にあり、４０μｍを超えると、積層布帛の風合いが硬くなる傾向にある。 The thickness of the adhesive 2 may be about 5 to 40 μm, preferably 8 to 30 μm. If the thickness is less than 5 μm, it tends to be difficult to firmly bond the two films, and if it exceeds 40 μm, the feel of the laminated fabric tends to be hard.
そして、基布５は、ポリエステル布帛からなるものである。具体的には、ポリエステルマルチフィラメント糸を用いた編織物やポリエステル繊維よりなる不織布等が用いられる。中でも、防塵性の向上や洗濯、滅菌処理に対する耐久性確保等の点から、ポリエステルフィラメント糸を用いた織編物であることが好ましい。もちろん、ポリエステルの耐久性を阻害しない範囲で、綿やレーヨン等を混合しても差し支えない。さらに、従来公知の方法に基づき撥水処理してもよい。撥水処理することにより、防水性能が向上する。 And base cloth 5 consists of polyester cloth. Specifically, a knitted fabric using polyester multifilament yarn, a nonwoven fabric made of polyester fiber, or the like is used. Among them, a woven or knitted fabric using polyester filament yarn is preferable from the viewpoints of improvement in dust resistance, durability against washing, and sterilization. Of course, cotton, rayon or the like may be mixed within a range not to impair the durability of the polyester. Further, water repellent treatment may be performed based on a conventionally known method. The water repellent treatment improves the waterproof performance.
本発明の積層布帛は、シームテープ及びリペアパッチに好適であり、それらを備えた医療用外衣としても好適に使用できる。特にシームテープ又はリペアパッチとして使用する場合、基布５の構成としては、貼着すべき生地１２中の表地６の構成に近づけるのが好ましい。例えば、表地６がトリコット編地であれば、基布５もトリコット編地とすることが好ましい。これにより、基布５及び表地６の伸縮挙動が近づき、医療用外衣全体として洗濯、滅菌処理の耐久性が高まることになる。なお、シームテープを生地１２に接着する際は、シームテープのタテ方向に張力が大きく加わることになる。しかるに、基布５として編地を用いる場合には、引張仕上げするなどしてタテ方向の伸度を抑えた編地を用いることが好ましい。 The laminated fabric of the present invention is suitable for a seam tape and a repair patch, and can also be suitably used as a medical outer garment provided with them. When using as a seam tape or a repair patch especially, as a structure of the base fabric 5, it is preferable to closely approach the structure of the outer fabric 6 in the fabric 12 which should be stuck. For example, if the outer fabric 6 is a tricot knitted fabric, it is preferable that the base fabric 5 also be a tricot knitted fabric. As a result, the expansion and contraction behavior of the base fabric 5 and the outer fabric 6 approaches, and the durability of the washing and sterilizing process as a whole of the medical outer garment is enhanced. When the seam tape is bonded to the cloth 12, a large tension is applied in the longitudinal direction of the seam tape. However, in the case of using a knitted fabric as the base fabric 5, it is preferable to use a knitted fabric in which the elongation in the longitudinal direction is suppressed by performing tensile finishing or the like.
さらに、積層布帛１１をシームテープ又はリペアパッチとしたとき、シームテープ又はリペアパッチの貼着対象となる生地１２としては、図２に例示にするように、例えば、表地６、接着剤７、防水膜８、接着剤９及び裏地１０の順で積層一体化されたものを使用するとよい。表地６及び裏地１０としては、例えばポリエステル布帛が用いられる。すなわち、基布５と同様のものが用いられる。また、ポリエステル布帛を用いる理由も、基布５の場合と同様である。また基布５と同様に、表地６、裏地１０を従来公知の方法に基づき撥水処理してもよい。撥水処理することにより、防水性能が向上する。 Furthermore, when the laminated fabric 11 is a seam tape or a repair patch, as the fabric 12 to which the seam tape or repair patch is to be attached, for example, the outer fabric 6, the adhesive 7, and the waterproof as illustrated in FIG. It is preferable to use a laminated and integrated one in the order of the membrane 8, the adhesive 9 and the backing 10. For example, a polyester fabric is used as the outer surface 6 and the backing 10. That is, the same one as the base cloth 5 is used. The reason for using a polyester fabric is also the same as in the case of the base fabric 5. Further, as in the case of the base fabric 5, the outer fabric 6 and the lining 10 may be subjected to water repellent treatment according to a conventionally known method. The water repellent treatment improves the waterproof performance.
生地１２において、接着剤７及び９は、好ましくはポリカーボネート系ポリウレタン樹脂を主体とする接着剤である。すなわち、接着剤２及び接着剤４と同様のものが用いられる。ポリカーボネート系ポリウレタン樹脂を主体とする接着剤を用いる理由も、接着剤２及び接着剤４と同様である。なお、接着剤７及び９は、ウイルスバリア性や血液バリア性を考慮して全面に設けられていてもよく、生地の透湿性を阻害しないようにドット状で設けられてもよい。また、これらの組み合わせで片側を全面接着、反対側をドット接着としてもよい。 In the fabric 12, the adhesives 7 and 9 are preferably adhesives based on a polycarbonate-based polyurethane resin. That is, the same ones as the adhesive 2 and the adhesive 4 are used. The reason for using an adhesive composed mainly of a polycarbonate-based polyurethane resin is also similar to that of the adhesive 2 and the adhesive 4. Adhesives 7 and 9 may be provided on the entire surface in consideration of virus barrier properties and blood barrier properties, or may be provided in a dot shape so as not to inhibit moisture permeability of the fabric. In addition, one side may be entirely bonded and the other side may be dot-bonded in these combinations.
防水膜８は、ポリカーボネート系ポリウレタン樹脂を主体とするポリウレタン膜である。すなわち、防水膜３と同様のものが用いられる。ポリカーボネート系ポリウレタン樹脂が用いられる理由も、防水膜３の場合と同様である。 The waterproof film 8 is a polyurethane film mainly made of a polycarbonate-based polyurethane resin. That is, the same one as the waterproof film 3 is used. The reason why a polycarbonate-based polyurethane resin is used is also the same as in the case of the waterproof film 3.
そして、生地１２が縫製され外衣となる。縫製による縫い目１３は従来公知の方法で形成すればよい。縫い目１３の防水性能を向上させるためには、図３に示したような肩倒しステッチ縫いや２本針折り伏せ縫いによる方法を採用するのが好ましい。そして、縫い目１３の表地６側から縫い目１３を完全に覆うようにしてシームテープ（図３の場合では積層布帛１１）が貼着される。 Then, the fabric 12 is sewn and becomes an outer garment. The sewn seam 13 may be formed by a conventionally known method. In order to improve the waterproof performance of the seam 13, it is preferable to adopt a method using a shoulder-down stitch sewing or a two-needle fold-down sewing as shown in FIG. Then, the seam tape (the laminated fabric 11 in the case of FIG. 3) is attached so as to completely cover the seam 13 from the outer fabric 6 side of the seam 13.
シームテープの貼着は、シームテープに設けられたポリカーボネート系ポリウレタン樹脂を主体とする感熱性樹脂膜１の溶融固化によって行う。これによって、防水性に優れた医療用外衣となるのである。なお、リペアパッチの場合は、医療用外衣の損傷部を覆うようにして、感熱性樹脂膜１の溶融固化によって貼着すればよい。 The sticking of the seam tape is performed by melting and solidifying the heat-sensitive resin film 1 mainly made of a polycarbonate-based polyurethane resin provided on the seam tape. By this, it becomes a medical coat excellent in waterproofness. In the case of a repair patch, the heat-sensitive resin film 1 may be adhered by melting and solidifying so as to cover the damaged portion of the medical outer covering.
本発明の積層布帛は、以上のように、洗濯及び湿熱滅菌処理を繰り返しても膜が界面剥離し難く、血液バリア性の耐久性及びウイルスバリア性の耐久性に優れている。両耐久性を評価するときの目安として、洗濯及び湿熱滅菌処理を以下のようにして行う。 As described above, the laminated fabric of the present invention is resistant to interfacial peeling of the film even after repeated washing and wet heat sterilization, and is excellent in the durability of the blood barrier property and the durability of the virus barrier property. Washing and wet heat sterilization are performed as follows as a standard for evaluating both durability.
まず、工業洗濯機（スガ試験機株式会社製、型番「ＬＭ−Ｗ型」）に積層布帛を１．５ｋｇ投入した後、ピュアー石鹸（株式会社不動化学製）１ｋｇ／Ｌと苛性ソーダ０．８ｇ／Ｌと水とを加えることにより、前記積層布帛と洗濯液との浴比が１：４０となるように調製する。前記浴比を調製した後、前記積層布帛を７３℃で２０分間洗濯し、排液する。前記排液後、４０℃の水で前記積層布帛を３０分間湯洗し、排液する。前記排液後、２５℃の水で前記積層布帛を１５分間オーバーフローすすぎし、排液、遠心脱水する。前記遠心脱水後、前記工業洗濯機から前記積層布帛を取り出し、前記積層布帛を６０℃で２０分間タンブル乾燥する。以上の工程が工業洗濯に相当する。 First, 1.5 kg of laminated fabric is put into an industrial washing machine (manufactured by Suga Test Instruments Co., Ltd., model number "LM-W type"), 1 kg / L of pure soap (made by Fudo Chemical Co., Ltd.) and 0.8 g of caustic soda. By adding L and water, the bath ratio of the laminated fabric and the washing liquid is adjusted to be 1:40. After adjusting the bath ratio, the laminated fabric is washed at 73 ° C. for 20 minutes and drained. After the drainage, the laminated fabric is rinsed in water at 40 ° C. for 30 minutes and drained. After the drainage, the laminated fabric is overflow rinsed with water at 25 ° C. for 15 minutes, drained, and centrifugally dewatered. After the centrifugal dewatering, the laminated fabric is taken out from the industrial washing machine, and the laminated fabric is tumble-dried at 60 ° C. for 20 minutes. The above steps correspond to industrial washing.
次に、工業洗濯後の積層布帛を高温蒸気滅菌器（株式会社平山製作所製、型番「ＨＶ５０型」）に投入し、１３５℃で８分間湿熱滅菌処理する。前記湿熱滅菌処理後、前記高温蒸気滅菌器から前記積層布帛を取り出し、６０℃で２０分間タンブル乾燥する。以上の工程が湿熱滅菌処理に相当する。 Next, the laminated fabric after industrial laundering is introduced into a high temperature steam sterilizer (manufactured by Hirayama Seisakusho Co., Ltd., model number “HV 50 type”), and subjected to moist heat sterilization treatment at 135 ° C. for 8 minutes. After the wet heat sterilization treatment, the laminated fabric is removed from the high temperature steam sterilizer and tumble dried at 60 ° C. for 20 minutes. The above steps correspond to moist heat sterilization.
以下、本発明を実施例に基づいて説明するが、本発明は実施例に限定されるものではない。 Hereinafter, the present invention will be described based on examples, but the present invention is not limited to the examples.
（実施例１）
［生地の準備］
ポリエチレンテレフタレートフィラメント糸５６ｄｔｅｘ３６ｆを整経し、２８ゲージトリコット編機を用いて、１−０／２−１／２−３／１−２の筬振りで閉じ目のシングルアトラストリコット編地を編成した。得られた生機を通常の方法により、精練、染色した後、仕上密度が６５コース／２．５４ｃｍ×４３ウェール／２．５４ｃｍとなるように仕上げセットした。得られたトリコット編地を表地として準備した。
Example 1
[Preparation of dough]
A polyethylene terephthalate filament yarn 56 dtex 36 f was warped, and a closed single atlas tricot knit fabric was knitted using a 28-gauge tricot knitting machine with a 1-0.2 / 2-1 / 2-3 / 1-2 traverse. The obtained green fabric was scoured and dyed by a conventional method, and then finished set so that the finished density would be 65 courses / 2.54 cm × 43 wales / 2.54 cm. The obtained tricot knitted fabric was prepared as the outer fabric.
次に、離型紙（リンテック株式会社製「ＥＶ１３０ＴＰＯ」）の離型面に、下記処方１の樹脂溶液（固形分２３質量％）をコンマコータにて塗布量６０ｇ／ｍ２で塗布後、１００℃で３分間の乾燥により、厚みが約１４μｍの防水膜を形成した。その後、この防水膜上に、下記処方２の接着剤（固形分５２質量％、粘度３０００ｍＰａ・ｓ／ ２５℃）をドット状グラビアロール（ドット径０．７５ｍｍ、３２メッシュ、接着面積８８％、深度０．０８ｍｍ）にて、略全面に塗布量が約７０ｇ／ｍ２となるように塗布し、１００℃×２分間で乾燥して、厚みが約４０μｍの接着剤層を形成した。 Next, a resin solution (solid content 23% by mass) of the following formulation 1 is applied on the release surface of release paper ("EV130TPO" manufactured by Lintec Corporation) at a coating amount of 60 g / m 2 with a comma coater, and then at 100 ° C. After drying for 3 minutes, a waterproof film having a thickness of about 14 μm was formed. Then, on this waterproofing film, the adhesive of the following formulation 2 (solid content 52 mass%, viscosity 3000 mPa · s / 25 ° C.) was spread on a dot-shaped gravure roll (dot diameter 0.75 mm, 32 mesh, bonding area 88%, depth) at 0.08 mm), was applied so that the amount of coating on substantially the entire surface of about 70 g / m 2, and dried at 100 ° C. × 2 min, thickness to form an adhesive layer of about 40 [mu] m.
続いて、この接着剤層と前記表地の裏面とが当接するようにして積層し、圧力２５０ｋＰａで貼合した後、離型紙を剥離し、４０℃で５日間エージングし、表地、接着剤及び防水膜の順で積層一体化されたラミネート布を得た。 Subsequently, the adhesive layer and the back surface of the outer layer are in contact with each other and laminated, and after bonding at a pressure of 250 kPa, the release paper is peeled off and aged for 5 days at 40 ° C. A laminated fabric was obtained which was laminated and integrated in the order of the films.
＜処方１＞
レザミンＣＵＳ１５００ １００質量部
（大日精化工業（株）製、固形分３０質量％のポリエーテルカーボネート系ポリウレタン樹脂）
レザロイドＬＵ４３４７ＮＴ ２質量部
（大日精化工業（株）製、固形分２１質量％のポリエーテルカーボネート系ポリウレタンマット剤）
メチルエチルケトン ３０質量部
<Prescription 1>
100 parts by mass of Resamine CUS 1500 (Dainichi Seika Kogyo Co., Ltd., polyether carbonate-based polyurethane resin having a solid content of 30% by mass)
2 parts by mass of Rezaloid LU 4347 NT (manufactured by Dainichi Seika Kogyo Co., Ltd., a polyether carbonate-based polyurethane matting agent having a solid content of 21% by mass)
Methyl ethyl ketone 30 parts by mass
＜処方２＞
レザミンＵＤ８３７３ １００質量部
（大日精化工業（株）製、固形分７０質量％、ポリカーボネート系ポリウレタン接着剤）
レザミンＵＤ架橋剤 １２質量部
（大日精化工業（株）製、固形分７５質量％のイソシアネート樹脂）
メチルエチルケトン ４０質量部
<Prescription 2>
RESAMIN UD 8373 100 parts by mass (manufactured by Dainichi Seika Kogyo Co., Ltd., solid content 70% by mass, polycarbonate-based polyurethane adhesive)
Resamine UD crosslinker 12 parts by mass (manufactured by Dainichi Seika Kogyo Co., Ltd., isocyanate resin having a solid content of 75% by mass)
Methyl ethyl ketone 40 parts by mass
前記ラミネート布の防水膜表面に、前記処方２の接着剤を用いて、ドット状グラビアロール（ドット径０．７５ｍｍ、３２メッシュ、接着面積８８％、深度０．０７ｍｍ）にて、略全面に塗布量が約６０ｇ／ｍ２となるように塗布し、１００℃×２分間で乾燥して、厚みが約３０μｍの接着剤層を形成した。続いて、この接着剤層と裏地とが当接するようにして積層し、圧力２５０ｋＰａで貼合した後、４０℃で４日間エージングし、表地、接着剤、防水膜、接着剤及び裏地の順で積層一体化された生地を得た。なお、裏地としては、表地同様、得られたトリコット編地を使用した。 The waterproof film surface of the laminate cloth is coated almost entirely with a dot-like gravure roll (dot diameter 0.75 mm, 32 mesh, adhesion area 88%, depth 0.07 mm) using the adhesive of the formulation 2 The coating was applied to an amount of about 60 g / m 2 and dried at 100 ° C. for 2 minutes to form an adhesive layer having a thickness of about 30 μm. Subsequently, the adhesive layer and the backing are laminated to be in contact with each other, laminated at a pressure of 250 kPa, and then aged at 40 ° C. for 4 days, in the order of outer surface, adhesive, waterproof film, adhesive and backing. A laminated and integrated fabric was obtained. In addition, as a lining, the obtained tricot knitted fabric was used like outer layer.
［シームテープの準備］
前記のシングルアトラストリコット編地を仕上げセットする際、経緯方向に引張仕上げして密度５８コース／２．５４ｃｍ×３６ウェール／２．５４ｃｍに仕上げた編地を基布として準備した。
[Preparation of seam tape]
When the above single atlas tricot knitted fabric was finished and set, a knitted fabric finished with a density of 58 courses / 2.54 cm × 36 wales / 2.54 cm by pulling in the longitudinal direction was prepared as a base fabric.
次に、離型紙（リンテック株式会社製「ＥＶ１３０ＴＰＯ」）の離型面に、上記処方１の樹脂溶液をコンマコータにて塗布量４５ｇ／ｍ２で塗布後、１００℃で３分間の乾燥により、厚みが約１０μｍの防水膜を形成した。その後、この防水膜上に、上記処方２の接着剤をドット状グラビアロール（ドット径０．７５ｍｍ、３２メッシュ、接着面積８８％、深度０．１ｍｍ）にて、略全面に塗布量が約９０ｇ／ｍ２となるように塗布し、１００℃×３分間で乾燥して、厚みが約５０μｍの接着剤層を形成した。続いて、この接着剤層と前記基布の裏面とが当接するようにして積層し、圧力２５０ｋＰａで貼合した後、離型紙を剥離し、４０℃で３日間エージングし、基布、接着剤及び防水膜の順で積層一体化されたラミネート布を得た。 Next, after applying the resin solution of the above formulation 1 with a comma coater at a coating amount of 45 g / m 2 on the release surface of a release paper (“EV130TPO” manufactured by Lintec Corporation), drying by 100 ° C. for 3 minutes Form a waterproof membrane of about 10 μm. After that, on this waterproofing film, the adhesive of the above formulation 2 is applied by a dot-like gravure roll (dot diameter: 0.75 mm, 32 mesh, adhesion area: 88%, depth: 0.1 mm) It applied so that it was / m < 2 > and it dried at 100 degreeC x 3 minutes, and formed the adhesive bond layer about 50 micrometers in thickness. Subsequently, the adhesive layer and the back surface of the base fabric are laminated so as to be in contact with each other, and after bonding at a pressure of 250 kPa, the release paper is peeled off and aged at 40 ° C. for 3 days. A laminated cloth integrally laminated and laminated in the order of & waterproof membrane was obtained.
一方、新たに用意した離型紙（リンテック株式会社製「ＥＶ１３０ＴＰＯ」）の離型面に、コンマコータにて下記処方３の樹脂溶液（固形分４０質量％、粘度７０００ｍＰａ・ｓ／２５℃）を塗布量が２５０ｇ／ｍ２となるように塗布した。その後、８０℃で３分間乾燥後、続いて、１２０℃で２分間乾燥し、厚みが約８０μｍの熱可塑性ポリカーボネート系ポリウレタン樹脂を主体とする感熱性樹脂膜を形成した。 On the other hand, on the release surface of a newly prepared release paper ("EV130TPO" manufactured by Lintec Corporation), a comma coater coats the resin solution (solid content 40 mass%, viscosity 7000 mPa · s / 25 ° C) of the following formulation 3 Were applied to give 250 g / m 2 . After drying at 80 ° C. for 3 minutes, the film was dried at 120 ° C. for 2 minutes to form a thermosensitive resin film mainly composed of a thermoplastic polycarbonate-based polyurethane resin having a thickness of about 80 μm.
＜処方３＞
セイカボンドＨＳ−５４０Ｓ３ １００質量部
（大日精化工業（株）製、接着開始温度１３０〜１４０℃、固形分５０質量％のポリカーボネート系ポリウレタン樹脂）
Ｎ，Ｎ−ジメチルホルムアミド １０質量部
酢酸エチル １５質量部
<Prescription 3>
100 parts by mass of Seikabond HS-540 S3 (manufactured by Dainichi Seika Kogyo Co., Ltd., polycarbonate based polyurethane resin having an adhesion start temperature of 130 to 140 ° C. and a solid content of 50% by mass)
N, N-dimethylformamide 10 parts by mass Ethyl acetate 15 parts by mass
そして、前記ラミネート布の防水膜上に、上記処方２の接着剤を用いて、ドット状グラビアロール（ドット径０．７５ｍｍ、３２メッシュ、接着面積８８％、深度０．０４ｍｍ）にて、略全面に塗布量が約３０ｇ／ｍ２となるように塗布し、１００℃×３分間で乾燥して、厚みが１５μｍの接着剤層を形成した。続いて、このラミネート布上の接着剤層と前記感熱性樹脂膜とが当接するようにして積層し、圧力２５０ｋＰａで貼合した後、離型紙を剥離し、４０℃で３日間エージングし、基布、接着剤、透湿防水膜、接着剤及び感熱性樹脂膜の順で積層された積層布帛を得た。その後、積層布帛の幅を２０ｍｍに調整し、シームテープとした。 Then, on the waterproof film of the laminate cloth, using the adhesive of the above-mentioned formulation 2, a dot-like gravure roll (dot diameter 0.75 mm, 32 mesh, adhesion area 88%, depth 0.04 mm), substantially the entire surface To a coating weight of about 30 g / m 2 and dried at 100 ° C. for 3 minutes to form an adhesive layer having a thickness of 15 μm. Subsequently, the adhesive layer on the laminated cloth and the heat-sensitive resin film are laminated so as to be in contact with each other and laminated at a pressure of 250 kPa, and then the release paper is peeled off and aged at 40 ° C. for 3 days. A laminated fabric in which a cloth, an adhesive, a moisture-permeable waterproof film, an adhesive and a heat-sensitive resin film were laminated in this order was obtained. Thereafter, the width of the laminated fabric was adjusted to 20 mm, and used as a seam tape.
［医療用外衣の作成］
上記生地を用いて外衣を縫製した。縫製における縫い目は、図３に示した肩倒しステッチ縫いで形成されたものである。ミシン糸は２０番地のポリエステル紡績糸を用いた。そして、縫い目の箇所に図３に示した状態でシームテープを貼着して医療用外衣を得た。シームテープの貼着は、ホットエアーマシン（クインライト電子精工株式会社製）にて行った。ホットエアーマシンの条件は、押え圧４９０ｋＰａ、ノズル圧９８ｋＰａ、熱風温度５５０℃及び速度３ｍ／分とした。
[Creation of medical clothing]
The outer garment was sewn using the above-mentioned cloth. The stitches in the sewing are formed by the shoulder-down stitch stitching shown in FIG. As a sewing thread, polyester spun yarn at address 20 was used. Then, a seam tape was attached to the seam in the state shown in FIG. 3 to obtain a medical outer garment. The sticking of the seam tape was carried out by a hot air machine (manufactured by Quinlight Denshi Co., Ltd.). The conditions of the hot air machine were a pressing pressure of 490 kPa, a nozzle pressure of 98 kPa, a hot air temperature of 550 ° C. and a speed of 3 m / min.
（実施例２）
［リペアパッチの準備］
実施例１でシームテープを得た方法と同一の方法で、５０ｍｍ角のリペアパッチを得た。
(Example 2)
[Preparation of repair patch]
In the same manner as the seam tape was obtained in Example 1, a 50 mm square repair patch was obtained.
［リペアパッチの貼着］
実施例１で得られた医療用外衣の生地の箇所にクロスカット部位を設けた。クロスカット部位は、長さ３０ｍｍの切断線が中央で交差した形態である。この部位を覆うようにしてリペアパッチを小型プレスマシンで貼着した。貼着条件は、温度１９０℃、時間１分及び圧力３００ｋＰａとした。
[Paste repair patch]
A crosscut site was provided at the location of the cloth of the medical outerwear obtained in Example 1. The cross cut site is a form in which a 30 mm long cutting line intersects at the center. The repair patch was stuck with a small press machine so as to cover this portion. The sticking conditions were a temperature of 190 ° C., a time of 1 minute and a pressure of 300 kPa.
（比較例１）
［生地の準備］
実施例１と同一の方法により、生地を準備した。
(Comparative example 1)
[Preparation of dough]
A dough was prepared in the same manner as Example 1.
［シームテープの準備］
実施例１［シームテープの準備］において、防水膜と感熱性樹脂膜との接着に接着剤を使用せず、防水膜表面と感熱性樹脂膜とを直接当接することでシームテープを得た。すなわち、前記ラミネート布の防水膜上に、前記感熱性樹脂膜を直接当接するようにして積層し、温度１３０℃、圧力３００ｋＰａで貼合すること以外は、実施例１と同一の方法によりシームテープを得た。
[Preparation of seam tape]
Example 1 [Preparation of Seam Tape] A seam tape was obtained by directly contacting the surface of the waterproof film and the heat-sensitive resin film without using an adhesive for bonding the waterproof film and the heat-sensitive resin film. That is, a seam tape is formed in the same manner as in Example 1 except that the heat-sensitive resin film is laminated on the waterproof film of the laminated fabric so as to abut directly and is bonded at a temperature of 130 ° C. and a pressure of 300 kPa. I got
［医療用外衣の作成］
この生地とシームテープを用い、実施例１と同一の方法で医療用外衣を得た。
[Creation of medical clothing]
A medical outer garment was obtained in the same manner as in Example 1 using this fabric and a seam tape.
（比較例２）
［リペアパッチの準備］
比較例１でシームテープを得た方法と同一の方法で、５０ｍｍ角のリペアパッチを得た。
(Comparative example 2)
[Preparation of repair patch]
A 50 mm square repair patch was obtained in the same manner as the seam tape was obtained in Comparative Example 1.
［リペアパッチの貼着］
実施例１で得られた医療用外衣の生地の箇所にクロスカット部位を設け、この部位を覆うようにして実施例２と同条件にてリペアパッチを小型マシンで貼着した。
[Paste repair patch]
A cross-cut portion was provided at a portion of the cloth of the medical outer covering obtained in Example 1, and the repair patch was attached by a small machine under the same conditions as in Example 2 so as to cover this portion.
実施例１及び２、比較例１及び２で得られた医療用外衣に、以下の条件で工業洗濯及び湿熱滅菌処理を行った。 The medical outer coverings obtained in Examples 1 and 2 and Comparative Examples 1 and 2 were subjected to industrial washing and moist heat sterilization under the following conditions.
［工業洗濯］
工業用洗濯機（スガ試験機株式会社製、型番「ＬＭ−Ｗ型」）を用いて、次の条件で洗濯した。
・浴比：１：４０（１．５ｋｇ：６０Ｌ）
・洗剤：ピュアー石鹸（株式会社不動化学製）１ｋｇ／Ｌに苛性ソーダ０．８ｇ／Ｌを添加してｐＨを１０に調整して用いた。
・工程：洗い（７３℃×２０分間）→湯洗（４０℃×３０分間）→オーバーフローすすぎ（２５℃×１５分間）→脱水→タンブル乾燥（６０℃×２０分間）
[Industrial laundry]
Using an industrial washing machine (manufactured by Suga Test Instruments Co., Ltd., model number “LM-W type”), washing was performed under the following conditions.
・ Bath ratio: 1:40 (1.5 kg: 60 L)
Detergent: 0.8 g / L of caustic soda was added to 1 kg / L of pure soap (made by Fudo Chemical Co., Ltd.) to adjust the pH to 10 and used.
Process: Washing (73 ° C. × 20 minutes) → Hot water washing (40 ° C. × 30 minutes) → Overflow rinse (25 ° C. × 15 minutes) → Dehydration → Tumble drying (60 ° C. × 20 minutes)
［湿熱滅菌］
高圧蒸気滅菌器（株式会社平山製作所製、型番「ＨＶ５０型」）を用いて、次の条件で滅菌処理した。
・工程：滅菌（１３５℃×８分間）→タンブル乾燥（６０℃×２０分間）
[Wet heat sterilization]
Sterilization was performed under the following conditions using a high pressure steam sterilizer (manufactured by Hirayama Seisakusho Co., Ltd., model number "HV 50 type").
Process: Sterilization (135 ° C. × 8 minutes) → Tumble drying (60 ° C. × 20 minutes)
上記した洗濯１回につき、滅菌処理を１回行い、各５０回行った。 Sterilization was performed once for each washing described above, and was performed 50 times each.
実施例１及び２にかかる医療用外衣は、洗濯及び滅菌処理を５０回繰り返しても、シームテープ本体又はリペアパッチ本体を貼着した箇所の剥離はほとんど見られなかった。さらに、シームテープ内部又はリペアパッチ内部において、感熱性樹脂膜と防水膜との間の剥離は、ほとんど認められなかった。また、シームテープ又はリペアパッチが貼着した箇所について、ＡＳＴＭ Ｆ１６７０人工血液バリア性及びＡＳＴＭ Ｆ１６７１ウイルスバリア性の評価を行ったところ、いずれも浸透は見られず、合格の判定であった。 In the medical outer coverings according to Examples 1 and 2, even after repeated washing and sterilization treatment 50 times, peeling of the seam tape main body or the portion where the repair patch main body was attached was hardly observed. Furthermore, almost no peeling between the heat-sensitive resin film and the waterproof film was observed inside the seam tape or inside the repair patch. Further, when the seam tape or the repair patch was attached, the ASTM F1670 artificial blood barrier property and the ASTM F1671 virus barrier property were evaluated. As a result, no penetration was observed and it was judged as a pass.
一方、比較例１及び２にかかる医療用外衣は、洗濯及び滅菌処理を５０回繰り返した後でも、シームテープ本体又はリペアパッチ本体を貼着した箇所の剥離はほとんど認められなかった。しかし、シームテープ内部又はリペアパッチ内部における感熱性樹脂膜と防水膜との界面では、一部剥離が認められた。そして、シームテープ又はリペアパッチが貼着した箇所について、ＡＳＴＭ Ｆ１６７０人工血液バリア性及びＡＳＴＭ Ｆ１６７１ウイルスバリア性の評価を行ったところ、両評価とも不合格という判定であった。この結果から、シームテープ又はリペアパッチにおける感熱性樹脂膜と防水膜の間の剥離がウイルスバリア性等の低下を引き起したものと考えられる。以上の結果から、実施例１及び２にかかる医療用外衣は、洗濯耐久性及び滅菌処理耐久性に優れており、人工血液バリア性、ウイルスバリア性にも優れていることが判る。 On the other hand, in the medical outerwear according to Comparative Examples 1 and 2, even after washing and sterilization were repeated 50 times, peeling of the seam tape main body or the portion where the repair patch main body was attached was hardly recognized. However, partial peeling was observed at the interface between the heat-sensitive resin film and the waterproof film inside the seam tape or inside the repair patch. And about the location to which the seam tape or the repair patch was stuck, when the evaluation of ASTM F1670 artificial blood barrier property and ASTM F1671 virus barrier property was performed, it was determined that both evaluations were rejection. From this result, it is considered that the peeling between the heat-sensitive resin film and the waterproof film in the seam tape or the repair patch causes the deterioration of the virus barrier property and the like. From the above results, it can be seen that the medical outerwear according to Examples 1 and 2 is excellent in washing durability and sterilization treatment durability, and is also excellent in artificial blood barrier properties and virus barrier properties.
１ ポリカーボネート系ポリウレタン樹脂を主体とする感熱性樹脂膜
２ ポリカーボネート系ポリウレタン樹脂を主体とする接着剤
３ ポリカーボネート系ポリウレタン樹脂を主体とするポリウレタン膜
４ ポリカーボネート系ポリウレタン樹脂を主体とする接着剤
５ ポリエステル系布帛よりなる基布
６ ポリエステル系布帛よりなる表地
７ ポリカーボネート系ポリウレタン樹脂を主体とする接着剤
８ ポリカーボネート系ポリウレタン樹脂を主体とするポリウレタン膜
９ ポリカーボネート系ポリウレタン樹脂を主体とする接着剤
１０ ポリエステル系布帛よりなる裏地
１１ 積層布帛
１２ 生地
１３ 縫い目
1 Thermosensitive resin film mainly composed of polycarbonate type polyurethane resin 2 Adhesive mainly composed of polycarbonate type polyurethane resin 3 Polyurethane film mainly composed of polycarbonate type polyurethane resin 4 Adhesive mainly composed of polycarbonate type polyurethane resin 5 Polyester type fabric Base fabric 6 Polyester outer surface fabric 7 Adhesive 8 mainly composed of polycarbonate polyurethane resin 8 Polyurethane film mainly composed of polycarbonate polyurethane resin 9 Adhesive mainly composed of polycarbonate polyurethane resin 10 made of polyester fabric 11 lining cloth 12 cloth 13 seam
Claims (5)
（工業洗濯・湿熱滅菌処理）
工業洗濯機（スガ試験機株式会社製、型番「ＬＭ−Ｗ型」）に積層布帛を１．５ｋｇ投入した後、ピュアー石鹸（株式会社不動化学製）１ｋｇ／Ｌと苛性ソーダ０．８ｇ／Ｌと水とを加えることにより、前記積層布帛と洗濯液との浴比が１：４０となるように調製する。前記浴比を調製した後、前記積層布帛を７３℃で２０分間洗濯し、排液する。前記排液後、４０℃の水で前記積層布帛を３０分間湯洗し、排液する。前記排液後、２５℃の水で前記積層布帛を１５分間オーバーフローすすぎし、排液、遠心脱水する。前記遠心脱水後、前記工業洗濯機から前記積層布帛を取り出し、前記積層布帛を６０℃で２０分間タンブル乾燥する。以上の工程が工業洗濯に相当する。
次に、工業洗濯後の積層布帛を高温蒸気滅菌器（株式会社平山製作所製、型番「ＨＶ５０型」）に投入し、１３５℃で８分間湿熱滅菌処理する。前記湿熱滅菌処理後、前記高温蒸気滅菌器から前記積層布帛を取り出し、６０℃で２０分間タンブル乾燥する。以上の工程が湿熱滅菌処理に相当する。 A laminated fabric integrally laminated and integrated in the order of a heat-sensitive resin film mainly composed of a polycarbonate-based polyurethane resin, an adhesive, a waterproof film, an adhesive and a base fabric, and the base fabric described above is a polyester fabric The adhesive is an adhesive mainly composed of a polycarbonate-based polyurethane resin, the above-mentioned waterproofing film is a polyurethane film mainly composed of a polycarbonate-based polyurethane resin, and the laminated fabric is subjected to the following industrial washing and moist heat sterilization treatment A laminated fabric characterized by having an artificial blood barrier property which passes ASTM F1670 and a virus barrier property which passes ASTM F1671 after repeating 50 times.
(Industrial washing, moist heat sterilization processing)
After charging 1.5 kg of the laminated fabric to an industrial washing machine (Suga Test Instruments Co., Ltd., model number "LM-W type"), 1 kg / L of pure soap (made by Fudo Chemical Co., Ltd.) and 0.8 g / L of caustic soda By adding water, it is prepared so that the bath ratio of the laminated fabric and the washing liquid may be 1:40. After adjusting the bath ratio, the laminated fabric is washed at 73 ° C. for 20 minutes and drained. After the drainage, the laminated fabric is rinsed in water at 40 ° C. for 30 minutes and drained. After the drainage, the laminated fabric is overflow rinsed with water at 25 ° C. for 15 minutes, drained, and centrifugally dewatered. After the centrifugal dewatering, the laminated fabric is taken out from the industrial washing machine, and the laminated fabric is tumble-dried at 60 ° C. for 20 minutes. The above steps correspond to industrial washing.
Next, the laminated fabric after industrial laundering is put into a high temperature steam sterilizer (manufactured by Hirayama Seisakusho Co., Ltd., model number "HV 50 type"), and subjected to moist heat sterilization treatment at 135 ° C for 8 minutes. After the wet heat sterilization treatment, the laminated fabric is removed from the high temperature steam sterilizer and tumble dried at 60 ° C. for 20 minutes. The above steps correspond to moist heat sterilization.
A medical fabric which is formed by sewing a fabric which is integrally laminated in the order of an outer fabric, an adhesive, a waterproof film, an adhesive and a lining, and the repair patch according to claim 3 is adhered to a damaged portion of the fabric. In the outer coating, the outer surface and the backing described above are both polyester fabrics, the adhesive described above is an adhesive mainly composed of a polycarbonate-based polyurethane resin, and the waterproof film described above is composed mainly of a polycarbonate-based polyurethane resin It is a film | membrane and the said repair patch is stuck on the said surface by melt-solidification of the said thermosensitive resin film, The medical outer coat characterized by the above-mentioned.
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| US20230193085A1 (en) * | 2021-12-21 | 2023-06-22 | Bemis Associates, Inc. | Waterproof seams and methods of making the same |
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| JP2002249730A (en) * | 2001-02-22 | 2002-09-06 | Unitica Fibers Ltd | Filling tape |
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| JP5843386B2 (en) * | 2011-08-28 | 2016-01-13 | ユニチカトレーディング株式会社 | Manufacturing method of medical outer garment |
| KR20160095002A (en) * | 2013-12-03 | 2016-08-10 | 도레이 카부시키가이샤 | Porous film, water-resistant and moisture-transmitting material, and medical garment and protective garment using water-resistant and moisture-transmitting material |
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| US20230193085A1 (en) * | 2021-12-21 | 2023-06-22 | Bemis Associates, Inc. | Waterproof seams and methods of making the same |
| WO2023121861A1 (en) * | 2021-12-21 | 2023-06-29 | Bemis Associates, Inc. | Waterproof seams and methods of making the same |
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