JP3196139B2 - Manufacturing method of artificial leather - Google Patents
Manufacturing method of artificial leatherInfo
- Publication number
- JP3196139B2 JP3196139B2 JP33445998A JP33445998A JP3196139B2 JP 3196139 B2 JP3196139 B2 JP 3196139B2 JP 33445998 A JP33445998 A JP 33445998A JP 33445998 A JP33445998 A JP 33445998A JP 3196139 B2 JP3196139 B2 JP 3196139B2
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- artificial leather
- elastic polymer
- heating chamber
- polyurethane resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、紳士用靴の甲皮、
婦人用靴の甲皮、スポーツ靴の甲皮、カジュアルシュー
ズの甲皮、鞄、ソファの表皮、カーシートの表皮等とし
て利用でき、更に、ブレザーコート、手袋の素材等とし
て利用できる人工皮革の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper for men's shoes,
Manufacture of artificial leather that can be used as the upper of women's shoes, the upper of sports shoes, the upper of casual shoes, the outer skin of bags and sofas, the outer skin of car seats, etc., and can also be used as the material for blazer coats and gloves. About the method.
【０００２】[0002]
【従来の技術】ポリウレタン人工皮革の製造方法として
は、ポリウレタン樹脂溶液を乾燥して表皮層被膜を形成
する乾式法と、ポリウレタン溶液を塗工または含浸させ
た基材を水中に導き、ポリウレタンを凝固・析出させて
微多孔を形成する湿式法とがある。乾式法は、型押しさ
れた離型紙の上に、表皮層用ポリウレタン樹脂溶液を塗
工し、乾燥室中で８０〜１３０℃で約１分間乾燥する。
次に、接着剤として二液型ポリウレタン溶液を塗工し
て、乾燥しないうちに圧着ロールで、基材に重ね圧着
し、そのまま２〜３分乾燥して巻き取り、５０〜７０℃
の熟成室内で２〜３日反応させた後、離型紙を剥して製
品を得ている。湿式法は、靴用素材の例では、基材（不
織布）をポリウレタンのジメチルホルムアミド（ＤＭ
Ｆ）溶液の入った含浸液槽に導き、含浸液を基材に含浸
させ、次に水中に短時間だけ浸漬して樹脂を前凝固させ
たのち、微多孔構造を作るための塗工液を塗る。塗工
後、水槽に導き、ＤＭＦを抽出して微多孔構造の人工樹
脂を得ている（例えば特開平８−４１７８６号）。2. Description of the Related Art Polyurethane artificial leather is produced by a dry method in which a polyurethane resin solution is dried to form a skin layer coating, or a substrate coated or impregnated with a polyurethane solution is introduced into water to solidify the polyurethane. -There is a wet method of forming microporous by precipitation. In the dry method, a polyurethane resin solution for a skin layer is applied on a release paper that has been embossed, and dried in a drying chamber at 80 to 130 ° C. for about 1 minute.
Next, a two-component polyurethane solution is applied as an adhesive, and before drying, a pressure roller is used to apply pressure on the base material.
After reacting for 2 to 3 days in the aging room, the release paper was peeled off to obtain a product. In the wet method, in the case of shoe materials, the base material (nonwoven fabric) is made of polyurethane dimethylformamide (DM).
F) Guide the impregnating solution into the impregnating solution tank, impregnate the substrate with the impregnating solution, then immerse it in water only for a short time to pre-solidify the resin, and then apply the coating solution for forming the microporous structure. Paint. After coating, the mixture is guided to a water tank, and DMF is extracted to obtain a microporous artificial resin (for example, JP-A-8-41786).
【０００３】[0003]
【発明が解決しようとする課題】しかし、前者、即ち乾
式法で得られる製品には細孔がないため、通気性・透湿
性を求める場合、離型紙に細工をして細孔を作るか、針
で孔をあけるといったことが行われている。しかし、こ
の方法で得られる細孔は、孔位置が不均一で合ったり、
孔径が大きくなるといった不具合がある。後者、即ち湿
式法では、環境上問題のある有機溶剤であるＤＭＦを使
用するため、加工現場の作業環境を悪くするといった問
題あり、更に、処理後の湯洗等のために多くの水を使用
するため、その処理水を処理するに、費用と労力がかか
る。しかも、ポリウレタンの性状、凝固調節剤の組成、
凝固浴中のＤＭＦ濃度、凝固浴の温度などにより微多孔
構造が決まるが、その調整が難しく、しかも、ＤＭＦの
抽出が不十分であると、乾燥中にＤＭＦにより微多孔構
造が破壊され表面が乾燥膜化してしまう等の不具合があ
る。本発明はかかる現状に鑑み、製造が比較的簡単な乾
式法を用いて、通気性・透湿性のある人工皮革を製造す
る方法を得ることを課題とする。However, since the former, that is, the product obtained by the dry method does not have pores, when air permeability and moisture permeability are required, it is necessary to modify the release paper to create pores. Drilling holes with a needle has been performed. However, the pores obtained by this method are not uniform in the hole position,
There is a problem that the hole diameter becomes large. In the latter case, that is, in the wet method, DMF, which is an organic solvent having environmental problems, is used. Therefore, there is a problem that the working environment at a processing site is deteriorated. Therefore, processing the treated water requires cost and labor. Moreover, the properties of the polyurethane, the composition of the coagulation regulator,
The microporous structure is determined by the DMF concentration in the coagulation bath, the temperature of the coagulation bath, etc. However, it is difficult to adjust the microporous structure, and if the extraction of DMF is insufficient, the microporous structure is destroyed by DMF during drying, and the surface is damaged. There are inconveniences such as dry film formation. In view of the above situation, an object of the present invention is to provide a method for producing breathable and moisture-permeable artificial leather using a dry method that is relatively simple to produce.
【０００４】[0004]
【課題を解決するための手段】本発明は、かかる課題を
解決するため、請求項１記載の発明は、通気性のある床
材の表面に、水系エマルジョン状態のポリウレタン樹脂
液を主体とする弾性重合体液を薄膜状に塗工し、これを
湿熱とマイクロ波を併用した加熱室内で加熱処理するこ
とで、マイクロ波によって弾性重合体液が急激な温度上
昇を起こし、ゲル化が始まって薄膜を形成すると共に弾
性重合体液に含まれる水分（蒸気）が該薄膜外に飛び出
し、水分の放出経路が極微細孔として薄膜中に残る。次
いでこれを熱風乾燥して、水分を飛ばした後加熱加圧成
形することで、薄膜は床材に一体に密着して、通気性、
透湿性のある人工皮革が得られる。According to the present invention, in order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that an elastic material mainly composed of a polyurethane resin liquid in an aqueous emulsion state is formed on the surface of a permeable floor material. The polymer liquid is applied in the form of a thin film, which is heated in a heating chamber that uses both wet heat and microwaves, causing the elastic polymer liquid to rapidly rise in temperature due to the microwaves, starting gelation, and forming a thin film. At the same time, the water (vapor) contained in the elastic polymer liquid jumps out of the thin film, and the release path of the water remains in the thin film as ultrafine pores. Then, it is dried with hot air, heated and pressed after blowing off the moisture, so that the thin film adheres to the floor material integrally,
An artificial leather with moisture permeability is obtained.
【０００５】請求項２記載の発明は、離型紙上に、水系
エマルジョン状態のポリウレタン樹脂液を主体とする弾
性重合体液を薄膜状に塗工し、これを湿熱とマイクロ波
を併用した加熱室内で加熱処理しすることで、マイクロ
波によって弾性重合体液が急激な温度上昇を起こし、ゲ
ル化が始まって薄膜を形成すると同時に弾性重合体液に
含まれる水分（蒸気）が該薄膜外に飛び出し、水分の放
出経路が極微細孔として薄膜中に残る。次いでこれを熱
風乾燥して薄膜に含まれる水分を除いた後、該薄膜を請
求項１の方法で製造した人工皮革の表面に熱接着するこ
とで、薄膜は、請求項１で得た人工皮革に一体に密着し
て、通気性、透湿性のある人工皮革が得られる。According to a second aspect of the present invention, an elastic polymer liquid mainly composed of a polyurethane resin liquid in an aqueous emulsion state is coated on a release paper in the form of a thin film, and this is applied in a heating chamber using both wet heat and microwaves. By performing the heat treatment, the temperature of the elastic polymer liquid rapidly rises due to the microwave, and gelation starts to form a thin film. At the same time, water (vapor) contained in the elastic polymer liquid jumps out of the thin film, and The emission path remains in the film as micropores. Next, the film is dried with hot air to remove moisture contained in the thin film, and then the thin film is thermally bonded to the surface of the artificial leather manufactured by the method of claim 1, whereby the thin film is made of the artificial leather obtained in claim 1. To form an artificial leather with breathability and moisture permeability.
【０００６】請求項３記載の発明は、請求項１並びに２
記載の人工皮革の製造方法において、弾性重合体液に、
誘電物質を含ませたことで、誘電損による発熱に加え
て、伝導電流による電力損失によって発熱することを生
かし、より速やかに均一に内部から弾性重合体液を加熱
できて、水分が蒸発するとき、微細な無数の孔を形成し
た表皮層を備える人工皮革が得られる。[0006] The invention described in claim 3 is based on claims 1 and 2.
In the method for producing artificial leather according to the above, the elastic polymer liquid,
By including the dielectric substance, in addition to the heat generated by the dielectric loss, the heat generated by the power loss due to the conduction current can be utilized, and the elastic polymer liquid can be heated more quickly and uniformly from the inside, and when the water evaporates, An artificial leather having a skin layer in which countless fine holes are formed can be obtained.
【０００７】[0007]
【発明の実施の形態】本発明方法の実施の形態を図面に
付き説明する。図１は、床材１の表面に、水系エマルジ
ョン状態のポリウレタン樹脂液をナイフコーター２で塗
工し、これを乾燥前の状態で、湿熱とマイクロ波を併用
した加熱室３内に導いて加熱した後、次いで熱風乾燥機
４で乾燥し、その後カレンダーロール５で加熱加圧成形
して製品を得る方法を示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the method of the present invention will be described with reference to the drawings. In FIG. 1, a polyurethane resin liquid in an aqueous emulsion state is applied to the surface of a flooring material 1 by a knife coater 2 and, before drying, is introduced into a heating chamber 3 using both wet heat and microwaves for heating. After that, a method of drying by a hot air dryer 4 and then heating and press molding with a calender roll 5 to obtain a product will be described.
【０００８】この方法では、床材１の素材としては、不
織布、織物、編物等の通気性のある素材を使用できる
が、特に、靴の甲皮、鞄の素材として用いる製品を得る
場合は、ポリアミド繊維（ナイロン繊維）又はポリエス
テル系繊維を使用した不織布が好ましく、これを、水系
エマルジョン状態のポリウレタン樹脂液に浸漬した後、
ポリウレタン樹脂液を、湿熱（水蒸気の保有する熱）と
マイクロ波を併用した固着装置でポリウレタン樹脂を素
材に固着させた通気性のあるものを用いた。In this method, as the material of the flooring material 1, an air-permeable material such as a nonwoven fabric, a woven fabric, or a knitted fabric can be used. In particular, when a product used as a material for a shoe upper or a bag is obtained, Non-woven fabric using polyamide fiber (nylon fiber) or polyester fiber is preferable, and after immersing this in a polyurethane resin liquid in an aqueous emulsion state,
As the polyurethane resin liquid, a gas-permeable polyurethane resin fixed to a material by a fixing device using both wet heat (heat held by steam) and microwave was used.
【０００９】床材１の表面に塗工する弾性重合体液とし
ては、例えば芳香族系のポリエステルジオール、脂肪族
系のポリエーテルジオール、脂環化合物のポリカーボネ
イトジオールを原料とするポリウレタンエマルジョンに
ゲル化剤を混入したものを用いる。このポリウレタンエ
マルジョンのポリウレタン組成物の量は、固形分として
重量比２０〜５０％の範囲が好ましい。この範囲を外れ
ると、床材１と該弾性重合体液が固着して得られる弾性
重合体とのバランスが悪くなって、製品の腰がなくなっ
たり、膨らみ感が得られなくなったりする。なお、ゲル
化剤としては、塩化カルシウム、塩化バリウム等を用い
る。[0009] The elastic polymer solution to be applied to the surface of the flooring material 1, for example, Fang aromatic polyester diols, polyether diols aliphatic, gelling polycarbonate diol polyurethane emulsion as a raw material of the alicyclic compound Use a mixture of agents. The amount of the polyurethane composition of this polyurethane emulsion is preferably in the range of 20 to 50% by weight as a solid content. If the ratio is out of this range, the balance between the flooring material 1 and the elastic polymer obtained by adhering the elastic polymer liquid is deteriorated, and the product loses its rigidity or swelling feeling. In addition, as a gelling agent, calcium chloride, barium chloride, or the like is used.
【００１０】加熱室３は水蒸気の導入口３ａと導出口３
ｂとを備えており、該加熱室３内を１００〜１１０℃の
水蒸気雰囲気とし、且つ該室内に、出力１Ｋｗ〜１０Ｋ
ｗ、周波数2450ＭＨｚのマグネトロン６（図２）のマイ
クロ波照射口７からマイクロ波を照射する。なお、加熱
室３に設けたマイクロ波照射口７には、図２に示すごと
く、反射板８を設けてマイクロ波照射口７から照射され
るマイクロ波を加熱室３内に均一に分散させるようにし
た。The heating chamber 3 has a steam inlet 3a and a steam outlet 3a.
b , the inside of the heating chamber 3 is set to a steam atmosphere of 100 to 110 ° C., and the output of 1 Kw to 10 K
w, 2450MHz frequency magnetron 6 (Figure 2)
Microwave irradiation is performed from the microwave irradiation port 7 . In addition, as shown in FIG. 2, the microwave irradiation port 7 provided in the heating chamber 3 is provided with a reflection plate 8 so that the microwave irradiated from the microwave irradiation port 7 is uniformly dispersed in the heating chamber 3. I made it.
【００１１】この加熱室３内を、弾性重合体液を塗工し
た床材１を、５〜１０数秒間通過させるときは、該加熱
室３内を床材１が通過する間に、塗工されたポリウレタ
ン樹脂液は、外部から水蒸気により加熱されると共に、
マグネトロン６から照射されるマイクロ波を均一に受
け、マイクロ波による急激な内部加熱とにより加熱され
ることで、該弾性重合体液がゲル化し薄膜を形成すると
共に、ゲル化する弾性重合体の網目に閉じ込められてい
る水分は蒸発し膜外に飛び出す。このとき、該弾性重合
体に無数の微細孔が形成されることが確認できた。な
お、加熱室３の水蒸気の導入口３ａと導出口３ｂ並びに
床材１の導入導出口に電波シールを施すこと申すまでも
ない。なお、床材１の表面に形成する薄膜の厚さは、
０．０３〜１ｍｍの範囲とすることが好ましく、この厚
みは、ポリウレタン（固形分）の濃度や塗工量、乾燥条
件の調節により任意に変更できる。また、弾性重合体液
には、必要に応じて着色剤、架橋剤、安定剤等の添加材
を配合する。When the floor material 1 coated with the elastic polymer solution is passed through the heating chamber 3 for 5 to 10 seconds, the coating material is applied while the floor material 1 passes through the heating chamber 3. The polyurethane resin liquid is heated by steam from the outside,
When the microwave irradiated from the magnetron 6 is uniformly received and heated by rapid internal heating by the microwave, the elastic polymer liquid gels and forms a thin film, and the mesh of the gelled elastic polymer is formed. The trapped moisture evaporates and jumps out of the membrane. At this time, it was confirmed that countless micropores were formed in the elastic polymer. It is needless to say that a radio wave seal is applied to the steam inlet 3a and the outlet 3b of the heating chamber 3 and the inlet and outlet of the floor material 1. The thickness of the thin film formed on the surface of the flooring 1 is
The thickness is preferably in the range of 0.03 to 1 mm, and this thickness can be arbitrarily changed by adjusting the concentration of polyurethane (solid content), the coating amount, and the drying conditions. Further, additives such as a colorant, a crosslinking agent, and a stabilizer are added to the elastic polymer liquid as needed.
【００１２】なお、弾性重合体液に、食塩水、カーボン
粉末のような誘電物質を混入させると、誘電損による発
熱とは別に、伝導電流による電力損失によっても発熱
し、より速やかに弾性重合体液を内部からより速やかに
且つ均一に加熱することができる。When a dielectric substance such as saline solution or carbon powder is mixed into the elastic polymer liquid, heat is generated not only by heat generation due to dielectric loss but also by power loss due to conduction current, and the elastic polymer liquid is more quickly removed. It is possible to heat more quickly and uniformly from inside.
【００１３】なお、床材１としては、靴の甲皮、鞄の素
材として用いる人工皮革として、不織布を用いたものを
示したが、例えば、衣服等に用いる等用途に応じて、織
物、編み物等を使用できる。なお、図１で９は床材１の
供給ロール、１０は製品の巻取ロールを示す。As the flooring material 1, a non-woven fabric is used as the artificial leather used as the material of the shoe upper or bag, but for example, it may be woven or knitted depending on the use such as for clothing. Etc. can be used. In FIG. 1, reference numeral 9 denotes a supply roll of the floor material 1, and reference numeral 10 denotes a take-up roll of the product.
【００１４】図４は、他の実施の形態を示すもので、離
型紙１１上に、水系エマルジョン状態のポリウレタン樹
脂液を主体とする弾性重合体液をコータロール１２で薄
膜状に塗工し、これを、湿熱とマイクロ波を併用した加
熱室１３内で加熱処理した後、次いで熱風乾燥機１４で
乾燥して薄膜を形成し、その後上記実施の形態で得た人
工皮革の表面に熱接着する場合を示す。FIG. 4 shows another embodiment, in which an elastic polymer liquid mainly composed of a polyurethane resin liquid in an aqueous emulsion state is coated on a release paper 11 by a coater roll 12 to form a thin film. Is heated in a heating chamber 13 using a combination of moist heat and microwave, then dried by a hot air dryer 14 to form a thin film, and then heat-bonded to the surface of the artificial leather obtained in the above embodiment. Is shown.
【００１５】この実施の形態に使用するポリウレタン樹
脂液の成分、濃度等は上記実施の形態と同じものでも良
いが、このものは、薄いため上記実施の形態よりは、腰
のあるポリウレタン樹脂液を使用することが望ましい。
また加熱室１３の構成も上記実施の形態で説明した加熱
室１３と変るところはなく、水蒸気の導入口１３ａと導
出口１３ｂを備えて該加熱室１３内を１００〜１１０℃
の水蒸気雰囲気とし、且つ出力１〜１０Ｋｗのマグネト
ロンから該加熱室１３内にマイクロ波を照射し、該水蒸
気によりポリウレタン樹脂液を外部から加熱すると共に
マイクロ波によって内部加熱させるもので、マイクロ波
照射口１７には、図２に示すと同様の反射板を設けてマ
イクロ波照射口１７から照射されるマイクロ波を加熱室
１３内に均一に分散させる。The components, concentrations, etc., of the polyurethane resin liquid used in this embodiment may be the same as those in the above-described embodiment. It is desirable to use.
The configuration of the heating chamber 13 is not different from that of the heating chamber 13 described in the above embodiment. The heating chamber 13 is provided with an inlet 13a and an outlet 13b for steam, and the inside of the heating chamber 13 is heated to 100 to 110 ° C.
A microwave atmosphere from the magnetron having an output of 1 to 10 Kw and irradiating the inside of the heating chamber 13 with microwaves, thereby heating the polyurethane resin liquid from the outside with the steam and heating the polyurethane resin liquid internally with the microwaves. In FIG. 17, a reflector similar to that shown in FIG. 2 is provided so that the microwave irradiated from the microwave irradiation port 17 is uniformly dispersed in the heating chamber 13.
【００１６】なお、図４で１６は、離型紙１１の供給ロ
ール、１５は人工皮革の供給ロール、１８は薄膜を人工
皮革の表面に熱接着するカレンダーロール、１９は薄膜
を人工皮革の表面に熱接着した後、剥取られた離型紙１
１を巻取る巻取ロール、２０は製品の巻取ロールを示
す。なおこの方法によって、得られる人工皮革にあって
は、上記実施の形態の薄膜が中間層となる。In FIG. 4, reference numeral 16 denotes a supply roll of the release paper 11, reference numeral 15 denotes a supply roll of artificial leather, reference numeral 18 denotes a calender roll for thermally bonding the thin film to the surface of the artificial leather, and reference numeral 19 denotes a thin film on the surface of the artificial leather. Release paper 1 peeled after heat bonding
Reference numeral 20 denotes a take-up roll for winding the product. In addition, in the artificial leather obtained by this method, the thin film of the above embodiment becomes an intermediate layer.
【００１７】（実施例１） 水系エマルジョン状態のポリウレタン樹脂液成分 芳香族系のポリウレタンエマルジョン １００重量部 高級脂肪酸アルカノールアミド系（ゲル化剤） ８重量部 ０．１モル食塩水（誘電物質） ５重量部 酸化チタン（白色顔料） ５重量部 ポリアクリル酸アンモニウム（増粘剤） ２重量部 上記配合処方した水系エマルジョン状態のポリウレタン
樹脂液を、ミキサーで、混合攪拌して均一な配合液（濃
度２０〜３０％）とし、これを床材（分割後の単繊維繊
度が0.2 デニールとなるポリアミド繊維５０％とポリエ
ステル繊維５０％からなる原綿を、ニードルパンチ法に
よって厚さ1.2 mm目付300 ｇ／ｍ2 とした不織布）に、
1.0mm の厚さでコーチングする。その後、これを、内部
を１００〜１１０℃の水蒸気雰囲気とし且つ出力1.2 K
w、周波数２４５０ＭＨｚのマグネトロンを設置した加
熱室３に導いて上記弾性重合体液をゲル化して薄膜化さ
せた後、熱風乾燥炉で水分を蒸発させた後、該薄膜面に
エンボス柄離形紙を置いた加熱装置（１３０℃）で５秒
間、３．５kg／cm2で面圧成形する。かくするときは、
床材上に、厚さが約０．８ｍｍで、無数の微細孔構造を
備え、しかもソフト（無数の微細孔によって多少堅めの
材料を選択してもソフト感を失わず）で腰のある薄膜層
を形成できて、天然皮革様の風合いを持ち、通気性、透
湿性に優れたシートが得られた。その細部は図３に代え
る顕微鏡写真（５０倍の顕微鏡写真）に示すごとく、無
数の微細孔を備えたものが得られた。そして、その断面
は、図６に代える顕微鏡写真（５０倍の顕微鏡写真）か
ら明らかなようにきわめてポーラスであることが分か
る。Example 1 Polyurethane resin liquid component in aqueous emulsion state Aromatic polyurethane emulsion 100 parts by weight Higher fatty acid alkanolamide type (gelling agent) 8 parts by weight 0.1 molar saline (dielectric substance) 5 parts by weight Part titanium oxide (white pigment) 5 parts by weight ammonium polyacrylate (thickener) 2 parts by weight The above-prepared polyurethane resin liquid in the form of an aqueous emulsion is mixed and stirred with a mixer to obtain a uniform compounding liquid (concentration 20 to 20). 30%), and this is used as a flooring material (raw cotton composed of 50% of polyamide fiber and 50% of polyester fiber having a single fiber fineness of 0.2 denier after splitting) to a thickness of 300 mm / m 2 with a thickness of 1.2 mm by a needle punch method. Non-woven fabric)
Coach at a thickness of 1.0 mm. After that, the inside is made into a steam atmosphere of 100 to 110 ° C. and the output is 1.2 K.
w, after the elastic polymer liquid is gelled to form a thin film by introducing it into the heating chamber 3 in which a magnetron having a frequency of 2450 MHz is installed, water is evaporated in a hot air drying oven, and embossed pattern release paper is coated on the thin film surface. Surface pressure molding is performed at 3.5 kg / cm 2 for 5 seconds using a placed heating device (130 ° C.). When hiding,
A thin film with a thickness of about 0.8 mm, a myriad of microporous structures on the flooring material, and a soft (without losing a soft feeling even if a somewhat stiff material is selected by the myriad micropores) A sheet having a layer, a natural leather-like texture, and excellent air permeability and moisture permeability was obtained. As shown in a micrograph (50-fold micrograph) in place of FIG. 3, the details were obtained with countless micropores. The cross section is extremely porous, as is apparent from the micrograph (magnification of 50 times) used in place of FIG.
【００１８】（実施例２） 水系エマルジョン状態のポリウレタン樹脂液成分 脂肪族系のポリウレタンエマルジョン １００重量部 0.1 モル食塩水（誘電物質） ５重量部 酸化チタン（白色顔料） ５重量部 ポリアクリル酸アンモニウム（増粘剤） １重量部 上記配合処方した水系エマルジョン状態のポリウレタン
樹脂液を、ミキサーで、混合攪拌して均一な配合液（濃
度２０〜３０％）とし、これを離形紙に厚さ５０μｍで
コーチングする。その後これを、内部を１００〜１１０
℃の水蒸気雰囲気とし且つ出力1.2 Ｋｗ、周波数２４５
０ＭＨｚのマグネトロンを設置した加熱室１３に導いて
弾性重合体液をゲル化して薄膜化させた後、これを実施
例１で得た製品の表面に積層し、加圧約３Ｋｇ／ｃ
ｍ2 、温度１３０℃のカレンダーロールを通して、実施
例１で得た製品の表面に熱接着し、その後離形紙を剥が
して製品を得る。かくするときは、床材上に、厚さが約
0.02〜0.03ｍｍで、しかも無数の微細孔を備える微多孔
構造を呈するソフト（無数の微細孔によって多少堅めの
材料を選択してもソフト感を失わず）で、しかも腰のあ
る薄膜層を形成できて、天然皮革様の風合いを持ち、通
気性、透湿性に優れたシートが得られた。その細部は図
５に代える顕微鏡写真（５０倍の顕微鏡写真）に示すご
とく、無数の微細孔を備えたものが得られた。そして、
その断面は、図６に代える顕微鏡写真（５０倍の顕微鏡
写真）に示すごとくきわめてポーラスであることが分か
る。実施例２では、実施例１で形成される薄い膜層が中
間層となる。なお上述の両実施例で得られた人工皮革
は、靴の甲皮、鞄の素材として利用するものであるが、
床材として、織布等の薄地のものを用いれば、衣料用そ
の他の素材として利用きるものが得られること申すまで
もない。(Example 2) Polyurethane resin liquid component in an aqueous emulsion state Aliphatic polyurethane emulsion 100 parts by weight 0.1 mol saline (dielectric substance) 5 parts by weight Titanium oxide (white pigment) 5 parts by weight Ammonium polyacrylate ( the polyurethane resin solution of the thickener) 1 part by weight of the formulation with water-based emulsion state, a mixer, and mixed and stirred to make a uniform blend solution (concentration 20-30%), the thickness 50.mu. m it to a release paper Coaching with After that, the inside is 100 ~ 110
℃ water vapor atmosphere, output 1.2 Kw, frequency 245
After guiding to the heating chamber 13 in which a 0 MHz magnetron is installed, the elastic polymer liquid is gelled to form a thin film, and this is laminated on the surface of the product obtained in Example 1, and a pressure of about 3 kg / c is applied.
m 2, through calender roll temperature 130 ° C., and heat-bonded to the surface of the product obtained in real Example 1, to obtain a product peeled then parting paper. When concealing, place on the floor
Forming a soft thin film layer that is 0.02-0.03mm and has a microporous structure with countless micropores (the softness is not lost even if a somewhat stiff material is selected due to the countless micropores) As a result, a sheet having a natural leather-like texture and excellent in air permeability and moisture permeability was obtained. As shown in a micrograph (magnification of 50 times) in place of FIG. 5, the details were obtained with a myriad of micropores. And
It can be seen that the cross section is extremely porous as shown in the micrograph (magnification of 50 times) replacing FIG. In actual施例2, a thin film layer formed in Example 1 is an intermediate layer. In addition, the artificial leather obtained in both of the above embodiments is used as a shoe upper, a material of a bag,
Needless to say, if a thin material such as a woven fabric is used as the floor material, a material usable as other materials for clothing can be obtained.
【００１９】[0019]
【発明の効果】本発明の請求項１乃至２の製造方法によ
れば、湿熱とマイクロ波を併用して加熱することで、通
気性、透湿性に優れた人工皮革を簡単に得ることがで
き、特に請求項３に示すごとく、弾性重合体液に、誘電
物質を含ませるときは、処理時間をより短くすることが
できる。According to the production method of claims 1 and 2 of the present invention, artificial leather having excellent air permeability and moisture permeability can be easily obtained by heating using both wet heat and microwaves. In particular, when a dielectric substance is contained in the elastic polymer liquid, the processing time can be further shortened.
【図１】 本発明の実施の形態の一例を示す工程図FIG. 1 is a process chart showing an example of an embodiment of the present invention.
【図２】 加熱室の概略図FIG. 2 is a schematic diagram of a heating chamber.
【図３】 図１に示す方法によって得た図面に代える製
品の表面顕微鏡写真FIG. 3 is a surface micrograph of a product instead of a drawing obtained by the method shown in FIG.
【図４】 他の実施の形態を示す工程図FIG. 4 is a process chart showing another embodiment.
【図５】 図４に示す方法によって得た図面に代える製
品の表面顕微鏡写真FIG. 5 is a surface micrograph of a product replacing the drawing obtained by the method shown in FIG.
【図６】 図４に示す方法によって得た図面に代える製
品の断面顕微鏡写真FIG. 6 is a cross-sectional micrograph of a product replacing the drawing obtained by the method shown in FIG.
１ 床材 ３ 加熱室 ７ マ
イクロ波照射口1 floor material 3 heating room 7 microwave irradiation port
Claims (3)
ジョン状態のポリウレタン樹脂液を主体とする弾性重合
体液を薄膜状に塗工し、これを湿熱とマイクロ波を併用
した加熱室内で加熱処理した後、次いで熱風乾燥し、そ
の後加熱加圧成形することを特徴とする人工皮革の製造
方法。1. An elastic polymer liquid mainly composed of a polyurethane resin liquid in an aqueous emulsion state is coated on a surface of a permeable floor material in the form of a thin film and heated in a heating chamber using both wet heat and microwaves. A method for producing artificial leather, comprising drying after treatment, hot-air drying, and then heating and pressing.
リウレタン樹脂液を主体とする弾性重合体液を薄膜状に
塗工し、これを湿熱とマイクロ波を併用した加熱室内で
加熱処理した後、次いで熱風乾燥して薄膜を形成し、そ
の後該薄膜を請求項１の方法で製造した人工皮革の表面
に熱接着することを特徴とする人工皮革の製造方法。2. An elastic polymer liquid mainly composed of a polyurethane resin liquid in a water-based emulsion state is coated on a release paper in a thin film form, and is heated in a heating chamber using both wet heat and microwaves. A method for producing artificial leather, comprising forming a thin film by hot-air drying, and thereafter thermally bonding the thin film to the surface of the artificial leather produced by the method of claim 1.
たことを特徴とする請求項１並びに２記載の人工皮革の
製造方法。3. The method for producing artificial leather according to claim 1, wherein the elastic polymer liquid contains a dielectric substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33445998A JP3196139B2 (en) | 1998-11-25 | 1998-11-25 | Manufacturing method of artificial leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33445998A JP3196139B2 (en) | 1998-11-25 | 1998-11-25 | Manufacturing method of artificial leather |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000160484A JP2000160484A (en) | 2000-06-13 |
| JP3196139B2 true JP3196139B2 (en) | 2001-08-06 |
Family
ID=18277634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33445998A Expired - Fee Related JP3196139B2 (en) | 1998-11-25 | 1998-11-25 | Manufacturing method of artificial leather |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3196139B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100393291B1 (en) * | 2001-03-03 | 2003-07-31 | 이규석 | process for preparing synthetic leather sheet |
| KR100448698B1 (en) * | 2001-07-06 | 2004-09-16 | 씨엔이티 주식회사 | Manufacturing method for artificial leather |
| PL1887128T3 (en) * | 2006-08-09 | 2010-03-31 | Hornschuch Ag K | Process for the production of breathable layered artificial leather and breathable layered artificial leather |
| CN102517921B (en) * | 2012-01-06 | 2014-06-11 | 福建兰峰制革有限公司 | Method for producing refractive PU synthetic leather |
| WO2017208681A1 (en) | 2016-06-01 | 2017-12-07 | Dic株式会社 | Method of producing porous body |
| JP6323620B1 (en) | 2016-06-01 | 2018-05-16 | Dic株式会社 | Method for producing coagulum |
| US11001963B2 (en) | 2017-09-14 | 2021-05-11 | Dic Corporation | Method for manufacturing synthetic leather |
| CN112981970B (en) * | 2021-03-09 | 2021-11-09 | 四川大学 | Microwave-hot air coupled water-based synthetic leather drying process |
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1998
- 1998-11-25 JP JP33445998A patent/JP3196139B2/en not_active Expired - Fee Related
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| JP2000160484A (en) | 2000-06-13 |
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