JPH0621404B2 - Double structure porous knit - Google Patents
Double structure porous knitInfo
- Publication number
- JPH0621404B2 JPH0621404B2 JP7343888A JP7343888A JPH0621404B2 JP H0621404 B2 JPH0621404 B2 JP H0621404B2 JP 7343888 A JP7343888 A JP 7343888A JP 7343888 A JP7343888 A JP 7343888A JP H0621404 B2 JPH0621404 B2 JP H0621404B2
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- Prior art keywords
- fiber
- knitted fabric
- melting point
- knitted
- fibers
- Prior art date
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- Expired - Lifetime
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Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は二重構造多孔質編物に関し、さらに詳しくは、
サンドイッチ構造材における多孔質芯材や、多孔質の繊
維／樹脂複合材料を製造する際の中間基材として用いて
有用な二重構造多孔質編物に関する。TECHNICAL FIELD The present invention relates to a double-structured porous knitted fabric, and more specifically,
The present invention relates to a porous core material in a sandwich structure material and a dual structure porous knitted fabric useful as an intermediate base material when manufacturing a porous fiber / resin composite material.
（従来の技術） 従来、中心部が中空状態にある多孔質三次元構造体とし
て次のようなものが知られている。すなわち、シート状
の布帛基材を波形状または凹凸形状に成形し、この両面
にシート状の平滑な外装基板を接着して中心部に空隙を
形成した構造のものである。また、特開昭５０−２９６
５２号公報に開示されているように、２枚の編織物の間
を渡し糸で連結して成る二重編織物に樹脂を含浸せしめ
たのちこれを硬化して中心部に空隙を形成した構造のも
のもある。(Prior Art) Conventionally, the following is known as a porous three-dimensional structure having a hollow central portion. That is, it has a structure in which a sheet-shaped cloth base material is formed into a corrugated shape or an uneven shape, and a sheet-shaped smooth exterior substrate is adhered to both surfaces of the sheet-shaped cloth base material to form a void in the central portion. In addition, JP-A-50-296
As disclosed in Japanese Laid-Open Patent Publication No. 52-52, a double-knitted fabric formed by connecting two knitted fabrics with a passing yarn is impregnated with a resin, and then cured to form a void in the center. There is also one.
（発明が解決しようとする課題） 上記した従来の構造体のうち、前者のものはその製造方
法が煩雑であると同時に、布帛基材とその両面の平滑な
外装基材との間の融着状態は点状または線状接着となっ
て接着面積が少なくなるため、両者間の剥離強度は小さ
いという問題がある。(Problems to be Solved by the Invention) Among the above-mentioned conventional structures, the former one has a complicated manufacturing method, and at the same time, fusion bonding between the fabric base material and the smooth exterior base materials on both surfaces thereof. There is a problem that the peel strength between the two is small because the state becomes a dot-like or linear adhesion and the adhesion area is reduced.
また、後者の構造体の場合、編成または織成の過程にお
ける使用繊維の毛羽発生や糸切れが多発し、その生産効
率および品質が著しく低下するという問題がある。それ
に、樹脂を含浸する際に、構造体の内部に含浸せしめる
樹脂量を調節する、すなわち、構造体の空隙率を調節す
ることが著しく困難であり、軽量かつ均質な多孔質三次
元構造体を安定して製造することに難点がある。Further, in the case of the latter structure, there is a problem that fluffing and yarn breakage of the fibers used frequently occur in the process of knitting or weaving, and the production efficiency and quality thereof are significantly reduced. In addition, when impregnating a resin, it is extremely difficult to control the amount of resin to be impregnated inside the structure, that is, it is extremely difficult to control the porosity of the structure, and a lightweight and homogeneous porous three-dimensional structure is provided. Difficult to manufacture stably.
本発明は、上記した問題を解消することができる新規な
構造の二重構造多孔質編物の提供を目的とする。An object of the present invention is to provide a dual structure porous knitted fabric having a novel structure capable of solving the above problems.
（課題を解決するための手段、作用） 上記した目的を達成するために、本発明の二重構造多孔
質編物は、所定の融点を有する熱可塑性繊維と前記融点
より高い融点を有する耐熱性繊維または非溶融繊維とか
ら成る混繊複合糸が熱可塑性繊維でカバーリングされて
いる糸状体を用いて編成された編目列を有する編地が互
いに対向し、かつ前記編地間は編地の編目列が厚み方向
に編糸によって連結されていることを構成上の特徴とす
る。(Means and Actions for Solving the Problems) In order to achieve the above-mentioned object, the double-structured porous knitted fabric of the present invention comprises a thermoplastic fiber having a predetermined melting point and a heat-resistant fiber having a melting point higher than the melting point. Alternatively, a knitted fabric having a stitch row knitted using a filamentous material in which a mixed fiber composite yarn composed of a non-melted fiber is covered with a thermoplastic fiber is opposed to each other, and the stitches of the knitted fabric are between the knitted fabrics. A structural feature is that the rows are connected by knitting yarns in the thickness direction.
以下に本発明の二重構造多孔質編物を例示した図面に基
づいて詳細に説明する。第１図は本発明編物の全体構造
を示す斜視図であり、第２図は本発明編物の両面に位置
する編地および編目列間における編構造を示す図であ
る。Hereinafter, the double-structured porous knitted fabric of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing the overall structure of the knitted fabric of the present invention, and FIG. 2 is a view showing the knitted structure between the knitted fabrics and the stitch rows located on both sides of the knitted fabric of the present invention.
まず、本発明の編物は２枚の編地１、２が互いに対向し
て配置されてそれぞれを上下の面とし、両者間が編糸３
によって連結されている構造体である。First, in the knitted fabric of the present invention, two knitted fabrics 1 and 2 are arranged so as to face each other to form upper and lower surfaces, respectively, and a knitting yarn 3 is formed between the two fabrics.
The structure is connected by.
図において、編地１、２はいずれも後述する糸状体１
ａ、２ａを用いて編成されており、たとえば矢線ｐ方向
に展開していく互いに平行な複数列の編目列１ｂ、２ｂ
を有している。In the figure, knitted fabrics 1 and 2 are both filaments 1 described later.
a, 2a, for example, a plurality of parallel stitch rows 1b, 2b which are developed in the arrow p direction, for example.
have.
すなわち、第２図に示したように、編目列１ｂ（または
２ｂ）により鎖編目に組織されている。この場合、編地
１、２の組織は格別限定されるものではないが、図示し
たようなダブルラッセル編地のそれであることが好まし
い。また、ダブルラッセルによるメッシュ組織やその他
の変形組織であってもよく、さらに、二針床を有する緯
編構造であってもよい。That is, as shown in FIG. 2, it is organized into chain stitches by the stitch row 1b (or 2b). In this case, the structures of the knitted fabrics 1 and 2 are not particularly limited, but it is preferable that it is that of the double Russell knitted fabric as illustrated. Further, it may have a mesh structure by double Russell or other deformed structure, and may further have a weft knitting structure having two needle beds.
編地１、２に配列し互いに隣接する編目列１ｂ、２ｂは
同じく後述する糸状体から成る挿入糸１′ａ、２′ａに
よって各編地の面内で連結されている。そして、対向す
る編地１、２のそれぞれの編目列１ｂ、２ｂの間は、後
述する編糸３によって厚み方向に連結され、全体は編地
１、２を対向面とする二重構造になっている。このとき
の編地１と編地２との間隔ｔは編物の面に亘って略一定
となっている。そしてこの間隔ｔは、編成時の編機の２
列の針床間隔を調整して適宜決められるが、本発明にお
いては４〜１５mmであることが好ましい。The stitch rows 1b and 2b arranged in the knitted fabrics 1 and 2 and adjacent to each other are connected in the plane of each knitted fabric by insert yarns 1'a and 2'a which also consist of thread-like bodies described later. Then, the respective stitch rows 1b, 2b of the facing knitted fabrics 1, 2 are connected in the thickness direction by a knitting yarn 3 described later, and the whole has a double structure in which the knitted fabrics 1, 2 are opposed faces. ing. At this time, the interval t between the knitted fabric 1 and the knitted fabric 2 is substantially constant over the surface of the knitted fabric. And this interval t is 2 of the knitting machine at the time of knitting.
It can be appropriately determined by adjusting the needle bed spacing of the row, but in the present invention, it is preferably 4 to 15 mm.
本発明の編物は、その空隙率が８０〜９８％に設定され
ることが好ましい。空隙率が８０％未満の編物の場合
は、重量が増大し、軽量化効果が損われるようになり、
また９８％を超える場合は編物全体の圧縮強度が低くな
るからである。さらに好ましくは、８５〜９５％であ
る。The knitted fabric of the present invention preferably has a porosity of 80 to 98%. In the case of a knit having a porosity of less than 80%, the weight increases, and the weight reduction effect is impaired.
If it exceeds 98%, the compression strength of the entire knitted fabric will be low. More preferably, it is 85 to 95%.
この空隙率は、用いる糸状体の太さ、編地を得るための
編機のゲージおよび針糸間隔、編成密度、組織の選択の
ような因子を適切に選定し、組合せることにより上記範
囲に設定することができる。This porosity falls within the above range by appropriately selecting and combining factors such as the thickness of the filament to be used, the gauge of the knitting machine and the needle thread interval for obtaining the knitted fabric, the knitting density, and the selection of the structure. Can be set.
以上のような編物を製造するに当っての好適例として、
糸状体１ａ、２ａおよび編糸３をダブルラッセル編機で
編成するための組織の１例をラッピング駒で表示して表
−１に示した。As a suitable example for manufacturing the above knitted fabric,
An example of the structure for knitting the filaments 1a, 2a and the knitting yarn 3 by the double Russell knitting machine is shown on a wrapping piece and shown in Table-1.
表１において、ガイドNo.２、ガイドNo.４はいずれも経
方向に編目列を形成する鎖編で、ガイドNo.１、ガイドN
o.５が各編目列の緯方向の連結を行なうための挿入組織
であり、ガイドNo.３は編地１、２の各編目列１ｂ、２
ｂ間を連結するための組織である。 In Table 1, guide No. 2 and guide No. 4 are chain stitches that form a stitch row in the warp direction, and guide No. 1 and guide N
o.5 is an insertion structure for connecting the stitch rows in the weft direction, and guide No. 3 is each stitch row 1b, 2 of the knitted fabrics 1, 2.
It is an organization for connecting b.
このようにして編成されている本発明の編物は柔軟であ
る。そして、これから多孔質の三次元構造体を製造する
際には、この編物に後述するような加熱処理が施され
る。The knitted fabric of the present invention knitted in this manner is flexible. Then, when manufacturing a porous three-dimensional structure from this, the knitted fabric is subjected to a heating treatment as described later.
さて、本発明の編物を構成する糸状体１ａ（または１
ｂ）は、第３図にその斜視図を示したように、混繊複合
糸１１と、これをカバーリングするカバーリング糸１２
とから成る。Now, the filamentous body 1a (or 1 that constitutes the knitted fabric of the present invention
As shown in the perspective view of FIG. 3, b) is a mixed fiber composite thread 11 and a covering thread 12 for covering the composite fiber.
It consists of and.
混繊複合糸１１は、所定の融点（Ｔ１とする）を有する
複数本の熱可塑性繊維１１ａと、Ｔ１より高い融点（Ｔ
２とする）を有する複数本の耐熱性繊維または非溶融繊
維１１ｂとの２種類の繊維を、たとえば、エア混繊また
は引揃え混織して構成されている。撚が加えられていて
もよい。Combined filament composite yarn 11 includes a plurality of thermoplastic fibers 11a of higher than T 1 the melting point (T having a predetermined melting point (and T 1)
2 ) and two types of fibers such as a plurality of heat-resistant fibers or non-melting fibers 11b having air). Twist may be added.
この混繊複合糸１１に、Ｔ１以上かつＴ２未満の温度
（Ｔとする）の加熱処理を施すと、２種類の繊維１１
ａ、１１ｂのうち後者の繊維１１ｂは熱的変化が小さい
が、しかし前者の繊維１１ａは熱収縮しかつ溶融する。
そして、この繊維１１ａの融液は複数本の繊維１１ｂの
間に含浸された状態でそのまま樹脂化する。すなわち、
この混繊複合糸１１においては、それが温度Ｔに加熱さ
れることにより、繊維１１ｂのそれぞれが互いに繊維１
１ａの構成樹脂で結着され強固に一体化されて全体の強
度が向上するのである。When this mixed fiber composite yarn 11 is subjected to a heat treatment at a temperature (T) that is equal to or higher than T 1 and lower than T 2 , two types of fibers 11 are obtained.
The latter fiber 11b of a and 11b has a small thermal change, but the former fiber 11a shrinks and melts.
Then, the melt of the fibers 11a is resinified as it is in a state of being impregnated between the plurality of fibers 11b. That is,
In this mixed fiber composite yarn 11, when it is heated to the temperature T, each of the fibers 11b is separated from each other by the fiber 1.
The constituent resin of 1a is bound and firmly integrated to improve the overall strength.
糸状体の他の要素であるカバーリング糸１２は、好まし
くは、融点（Ｔ３とする）が前記Ｔ１より高くかつＴ２
未満である熱可塑性繊維から成る。カバーリング糸１２
は混繊複合糸１１の繊維群を束ねることにより編機にか
けたときの糸状体の編成性を向上せしめる。またそれの
みではなく、前記した加熱処理時に生起する熱可塑性繊
維１１ａの熱収縮に伴って発生する熱収縮応力により繊
維１１ｂの配列が乱れて編物全体の編目が乱れるという
不都合を防止する機能も果す。The covering thread 12, which is another element of the filament, preferably has a melting point (denoted by T 3 ) higher than T 1 and T 2 mentioned above.
It consists of thermoplastic fibers that are less than. Covering thread 12
Bundles the fiber group of the mixed fiber composite yarn 11 to improve the knitting property of the filamentous body when it is applied to the knitting machine. Not only that, but also has the function of preventing the inconvenience that the arrangement of the fibers 11b is disturbed by the heat shrinkage stress generated by the heat shrinkage of the thermoplastic fibers 11a that occurs during the heat treatment, and the stitches of the entire knitted fabric are disturbed. .
カバーリング糸１２の融点Ｔ３がＴ１＜Ｔ３＜Ｔ２の関
係にあるほうが好ましいとする理由は、そのような関係
におくと、加熱処理時に融点Ｔ１の熱可塑性繊維１１ａ
が熱収縮して溶融する過程ではこのカバーリング糸１２
の熱的変化が小さく、繊維群全体を束ねる機能は消失し
ていないので、混繊複合糸１１の乱れ、すなわち糸状体
の乱れを減少することができるからである。このとき
の、Ｔ１とＴ３の差は１０〜３０℃であることが好まし
い。なお、混繊複合糸１１の熱可塑性繊維１１ａとし
て、熱収縮率または熱収縮応力が小さい繊維を用いれ
ば、前記した糸状体の乱れを一層減少せしめることがで
きて好適である。The reason why the melting point T 3 of the covering thread 12 is preferably in the relationship of T 1 <T 3 <T 2 is that in such a relationship, the thermoplastic fiber 11a having the melting point T 1 during the heat treatment is used.
In the process in which the heat shrinks and melts, the covering thread 12
This is because the thermal change of (3) is small and the function of bundling the entire fiber group is not lost, and therefore the disorder of the mixed fiber composite yarn 11, that is, the disorder of the filament can be reduced. The difference between T 1 and T 3 at this time is preferably 10 to 30 ° C. It should be noted that it is preferable to use a fiber having a small heat shrinkage ratio or a heat shrinkage stress as the thermoplastic fiber 11a of the mixed fiber composite yarn 11 because it is possible to further reduce the disorder of the filamentous material.
混繊複合糸１１における繊維１１ａと繊維１１ｂの混率
は、得られた最終の多孔質三次元構造体の外観と機械的
強度に大きな影響を与えるが、本発明にあっては、その
混率は繊維１１ｂが全体の２０〜６０％を占有している
ような状態であることが好ましい。繊維１１ｂの混率が
２０％未満の場合には、加熱処理の過程で繊維１１ａの
熱収縮が支配的となり混繊複合糸は変形し易すくなり、
また混率が６０％を超える場合は、繊維１１ａの融液が
繊維１１ｂの間に充分含浸せず、その結果得られた構造
体の強度は低下するからである。The mixing ratio of the fibers 11a and the fibers 11b in the mixed fiber composite yarn 11 has a great influence on the appearance and the mechanical strength of the final porous three-dimensional structure obtained. It is preferable that 11b occupy 20 to 60% of the whole. When the mixing ratio of the fibers 11b is less than 20%, the heat shrinkage of the fibers 11a becomes dominant during the heat treatment, and the mixed fiber composite yarn is easily deformed,
On the other hand, if the mixing ratio exceeds 60%, the melt of the fibers 11a is not sufficiently impregnated between the fibers 11b, and as a result, the strength of the resulting structure is lowered.
本発明の編物の製造に用いる糸状体を構成する繊維の組
合せは、この編物に上記したような加熱処理を施して多
孔質の構造体にするときの適用温度によって規定され
る。一般に、融点がＴ１の熱可塑性繊維としては、ポリ
アミド繊維やポリエステル繊維等をあげることができ、
融点Ｔ２の耐熱性繊維としてはアラミド繊維やガラス繊
維、また非溶融繊維としては炭素繊維等をあげることが
できる。そして融点Ｔ３のカバーリング糸としては、選
定した融点Ｔ１の熱可塑性繊維との関係で、好ましくは
Ｔ１＜Ｔ３を満足する熱可塑性繊維を適宜に選定すれば
よい。The combination of fibers constituting the filamentous body used for producing the knitted fabric of the present invention is defined by the application temperature when the knitted fabric is subjected to the heat treatment as described above to form a porous structure. Generally, examples of the thermoplastic fiber having a melting point of T 1 include polyamide fiber and polyester fiber,
Examples of the heat-resistant fiber having a melting point T 2 include aramid fiber and glass fiber, and examples of the non-melting fiber include carbon fiber. As the covering thread having the melting point T 3 , it is preferable to appropriately select the thermoplastic fiber satisfying T 1 <T 3 in relation to the selected thermoplastic fiber having the melting point T 1 .
（発明の効果） 以上の説明から明らかなように、本発明の二重構造多孔
質編物は、所定の融点を有する熱可塑性繊維と前記融点
より高い融点を有する耐熱性繊維または非溶融繊維とか
ら成る混繊複合糸が、好ましくは前記熱可塑性繊維の融
点よりも高くかつ前記耐熱性繊維の融点よりも低い融点
を有する熱可塑性繊維でカバーリングされている糸状体
を用いて編成された編目列を有する編地が互いに対向
し、かつ前記編地間は編地の編目列が厚み方向に編糸に
よって連結されていることを特徴とするので、厚みが均
一でかつ圧縮強度の大きい多孔質な三次元構造体を得る
ことができる。そして三次元構造体の製造に関しては、
本発明の編物に所定の加熱処理を施すのみで均一な樹脂
含浸が行なわれたと同等の効果が得られるため、その生
産効率は高い。また、糸状体において、その混繊複合糸
が熱可塑性繊維でカバーリングされているので編物への
編成性は良好でかつ樹脂含浸性も向上する。(Effect of the invention) As is clear from the above description, the double-structured porous knitted fabric of the present invention is composed of a thermoplastic fiber having a predetermined melting point and a heat-resistant fiber or a non-melting fiber having a melting point higher than the melting point. A knitting row formed by using a filamentous material in which the mixed fiber composite yarn is covered with a thermoplastic fiber having a melting point preferably higher than the melting point of the thermoplastic fiber and lower than the melting point of the heat resistant fiber. Since the knitted fabrics having the above are opposed to each other, and the stitch rows of the knitted fabrics are connected by knitting yarns in the thickness direction between the knitted fabrics, the knitted fabrics having a uniform thickness and a large compressive strength are porous. A three-dimensional structure can be obtained. And regarding the manufacture of three-dimensional structures,
The production efficiency is high because the same effect as when uniform resin impregnation is performed can be obtained only by subjecting the knitted fabric of the present invention to a predetermined heat treatment. Further, in the filamentous material, the mixed fiber composite thread is covered with the thermoplastic fiber, so that the knitting property is good and the resin impregnation property is also improved.
更に、本発明の編物を芯材に用いる場合、その両面は規
則的な編目列が多数配列しているので全体の接着面積は
大きく、接着された外装基材の剥離現象は解消する。Furthermore, when the knitted fabric of the present invention is used as the core material, a large number of regular stitch rows are arranged on both sides thereof, so that the entire bonded area is large and the peeling phenomenon of the bonded exterior base material is eliminated.
そしてまた、加熱処理前の本発明編物は極めて柔軟性に
富むため複雑な曲面に沿わせることができる。それゆ
え、加熱処理時に種々の形状の型を用いることにより複
雑な形状の三次元構造体にすることができる。Moreover, since the knitted fabric of the present invention before heat treatment is extremely flexible, it can be formed along a complicated curved surface. Therefore, it is possible to form a three-dimensional structure having a complicated shape by using molds having various shapes during the heat treatment.
第１図は本発明の二重構造多孔質編物の全体を例示する
斜視図、第２図はその編構造図、第３図は本考案編物の
編成に用いる糸状体の斜視図である。 １，２……編地、１ａ，２ａ……糸状体、１ｂ、２ｂ…
…編目列、１′ａ，２′ａ……挿入糸、３……編糸、１
１……混繊複合糸、１１ａ……熱可塑性繊維、１１ｂ…
…耐熱性繊維または非溶融繊維、１２……カバーリング
糸。FIG. 1 is a perspective view illustrating the entire double-structured porous knitted fabric of the present invention, FIG. 2 is a knitted structure diagram thereof, and FIG. 3 is a perspective view of a filament used for knitting the knitted fabric of the present invention. 1, 2 ... Knitted fabric, 1a, 2a ... Filiform, 1b, 2b ...
... Stitch row, 1'a, 2'a ... Inserted yarn, 3 ... Knitting yarn, 1
1 ... Mixed fiber composite yarn, 11a ... Thermoplastic fiber, 11b ...
... heat-resistant fiber or non-melting fiber, 12 ... covering thread.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−29652（ＪＰ，Ａ) 特開 昭59−106550（ＪＰ，Ａ) 特開 昭49−87865（ＪＰ，Ａ) 特開 昭62−6932（ＪＰ，Ａ) 実開 昭55−176389（ＪＰ，Ｕ) ─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-58-29652 (JP, A) JP-A-59-106550 (JP, A) JP-A-49-87865 (JP, A) JP-A 62- 6932 (JP, A) Actually opened 55-176389 (JP, U)
Claims (1)
点より高い融点を有する耐熱性繊維または非溶融繊維と
から成る混繊複合糸が熱可塑性繊維でカバーリングされ
ている糸状体を用いて編成された編目列を有する編地が
互いに対向し、かつ前記編地間は編地の編目列が厚み方
向に編糸によって連結されていることを特徴とする二重
構造多孔質編物。1. A filamentous material in which a mixed fiber composite yarn comprising a thermoplastic fiber having a predetermined melting point and a heat-resistant fiber or a non-melting fiber having a melting point higher than the melting point is covered with the thermoplastic fiber. A double-structured porous knitted fabric in which knitted fabrics having knitted stitch rows face each other, and the stitch rows of the knitted fabrics are connected by knitting yarns in the thickness direction between the knitted fabrics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7343888A JPH0621404B2 (en) | 1988-03-29 | 1988-03-29 | Double structure porous knit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7343888A JPH0621404B2 (en) | 1988-03-29 | 1988-03-29 | Double structure porous knit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01250454A JPH01250454A (en) | 1989-10-05 |
| JPH0621404B2 true JPH0621404B2 (en) | 1994-03-23 |
Family
ID=13518248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7343888A Expired - Lifetime JPH0621404B2 (en) | 1988-03-29 | 1988-03-29 | Double structure porous knit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0621404B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07279150A (en) * | 1994-04-11 | 1995-10-24 | Unitika Ltd | Civil engineering sheet |
| WO1996037648A1 (en) * | 1995-05-23 | 1996-11-28 | Kanebo, Ltd. | Corrugated fiberboard knit, and moldings and mouse pad formed of same |
| WO2001044551A1 (en) * | 1999-12-16 | 2001-06-21 | Asahi Doken Kabushiki Kaisha | Three-dimensional maquisette style knitted fabric |
| JP2017218719A (en) * | 2017-09-20 | 2017-12-14 | アイリスオーヤマ株式会社 | mask |
-
1988
- 1988-03-29 JP JP7343888A patent/JPH0621404B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01250454A (en) | 1989-10-05 |
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