JPS6410621B2 - - Google Patents
Info
- Publication number
- JPS6410621B2 JPS6410621B2 JP55153631A JP15363180A JPS6410621B2 JP S6410621 B2 JPS6410621 B2 JP S6410621B2 JP 55153631 A JP55153631 A JP 55153631A JP 15363180 A JP15363180 A JP 15363180A JP S6410621 B2 JPS6410621 B2 JP S6410621B2
- Authority
- JP
- Japan
- Prior art keywords
- polyamide resin
- printing
- sheath
- base fabric
- nylon
- 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
Links
- 229920006122 polyamide resin Polymers 0.000 claims description 42
- 239000000835 fiber Substances 0.000 claims description 34
- 238000007639 printing Methods 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 20
- 229920001225 polyester resin Polymers 0.000 claims description 13
- 239000004645 polyester resin Substances 0.000 claims description 13
- 239000004744 fabric Substances 0.000 description 25
- 239000010410 layer Substances 0.000 description 20
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000000758 substrate Substances 0.000 description 15
- 229920002292 Nylon 6 Polymers 0.000 description 11
- 239000004745 nonwoven fabric Substances 0.000 description 10
- -1 isocyanate compounds Chemical class 0.000 description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 description 8
- 239000005020 polyethylene terephthalate Substances 0.000 description 8
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 7
- 239000001110 calcium chloride Substances 0.000 description 7
- 229910001628 calcium chloride Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 239000002904 solvent Substances 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000007645 offset printing Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- QSLUWZMIMXNLJV-UHFFFAOYSA-L calcium methanol dichloride Chemical compound [Cl-].[Cl-].[Ca+2].OC QSLUWZMIMXNLJV-UHFFFAOYSA-L 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Nonwoven Fabrics (AREA)
Description
本発明はミクロポーラス層を有する印刷用基
材、ことに、衣料、寝具、雑貨などに付着される
表示ラベル用の素材などとして適した基材に関す
る。
衣料、寝具、雑貨などにはそのメーカー、品
質、取扱上の注意等を表示するためのラベルが付
着されている。従来、かかる表示ラベル用素材の
１つとして、ポリアミド樹脂繊維からなる基布上
にポリアミド樹脂の塩化カルシウム−メタノール
溶液を塗布し、これを水に浸漬して脱溶剤凝固さ
せたり、該基布を直接、塩化カルシウムのメタノ
ール溶液に浸漬し、ついで搾液後、水に浸漬して
凝固させたりして表面にポリアミド樹脂のミクロ
ポーラス層を形成させた印刷用基材が用いられて
いる。
これらの印刷用基材は、ミクロポーラス層がき
わめてすぐれた印刷適性を有し、表示ラベル用素
材として非常に好ましいものであるが、ポリアミ
ド繊維の基布が熱や水分に対する寸法安定性が悪
く、アイロンかけの際に収縮したり、水分を吸収
して伸長するので、オフセツト印刷することが困
難であるなどの欠点を有している。かかる欠点を
解消するため、寸法安定性の良好なポリエステル
樹脂繊維などの基布を用い、その表面にポリアミ
ド樹脂のミクロポーラス層を形成させることが提
案されている。
しかしながら、このような基材では、寸法安定
性は改良されるものの、基布とミクロポーラス構
造を形成するポリアミド樹脂層との接着が不充分
であり、ポリアミド樹脂層が剥離しやすく、印刷
用基材としては適当でない。また、このミクロポ
ーラス構造を形成するポリアミド樹脂層を剥離を
防止するため、ポリイソシアネート化合物などを
用いて基布と接着させることも提案されている
が、製造工程が複雑となり、得られた製品の柔軟
性が低下するなどの問題があり、未だ、印刷適性
等のすぐれた、かつ、寸法安定性の良好な充分満
足すべき印刷用基材は見当らない。
かかる事情にかんがみ、本発明者らは、これら
の欠点を解消した印刷用基材を得るべく鋭意検討
を重ねた結果、基布を構成する繊維自体を特定の
構造とすることにより、印刷適性等にすぐれ、か
つ、寸法安定性の良好な印刷用基材が得られるこ
とを見出し、本発明を完成するにいたつた。
すなわち、本発明は、繊維状ポリエステル樹脂
の周囲部に、実質的に微細孔を有しないポリアミ
ド樹脂層を介してポリアミド樹脂のミクロポーラ
ス層を形成させた構造の繊維からなるミクロポー
ラス層を有するシート状印刷用基材を提供するも
のである。本発明の印刷用基材は、芯部をポリエ
ステル樹脂、鞘部をポリアミド樹脂として溶融紡
糸して得られたコンジユゲート繊維で基布を構成
させ、基布をポリアミド樹脂の溶剤に浸漬し、搾
液後、水に浸漬して凝固させて、基布の各コンジ
ユゲート繊維のポリアミド樹脂鞘部表層にミクロ
ポーラス構造を形成させるか、あるいは、該基布
上にポリアミド樹脂の溶液を塗布し、ついで脱溶
剤凝固させることにより、各コンジユゲート繊維
のポリアミド樹脂鞘部の周囲に、さらに、ミクロ
ポーラス構造を有するポリアミド樹脂層を形成さ
せて得られる。得られた基材を構成する各繊維
は、添付の第１図の模式的拡大断面図に示すごと
く、ポリエステル樹脂芯部１の周囲に、実質的に
微細孔を有しないポリアミド樹脂層２を介してポ
リアミド樹脂のミクロポーラス層３を形成した断
面構造を呈する。
かかる構造を呈することにより、本発明の印刷
用基材は、その表面がポリアミド樹脂のミクロポ
ーラス層となつているので、きわめてすぐれた印
刷適性を有し、かつ、コンジユゲート繊維の芯部
が寸法安定性の良好なポリエステル樹脂であり、
その周囲のポリアミド樹脂層はその実質的に微細
孔を有しない部分で芯部と構造的に強固に結合し
ており、湿度に対してはポリアミド樹脂が伸長せ
んとするのを、また、熱に対してはポリアミド樹
脂が収縮せんとするのを抑制できるので、従来の
ポリアミド樹脂繊維の基布を用いたものと異な
り、非常に良好な寸法安定性を有する。また、ポ
リアミド樹脂の溶液を塗布した場合にも、コンジ
ユゲート繊維芯部のポリエステル樹脂と鞘部のポ
リアミド樹脂が構造的に結合しているのに加え、
塗布したポリアミド樹脂は鞘部のポリアミド樹脂
と相溶して強固に結合するので、従来のポリエス
テル樹脂繊維の基布を用いた基材のごとき剥離な
どの問題も起さず、イソシアネート化合物などの
架橋剤も必要としない。
かくして、本発明において用いるコンジユゲー
ト繊維は芯部フイラメントの周囲をこれと異質の
樹脂で被覆した鞘芯型繊維で、芯部をポリエチレ
ンテレフタレートまたはポリエチレンテレフタレ
ートを主体とする共重合体のようなポリエステル
樹脂、鞘部をナイロン−６、ナイロン66およびこ
れらを主体とするような共重合体のごときポリア
ミド樹脂とし、それぞれ別々の押出機より溶融供
給し、スピンヘツド内において溶融状態で鞘芯に
分配させ、紡口よりフイラメント状に吐出させて
得られる。これらポリアミド樹脂とポリエステル
樹脂の重量比は、70〜10：30〜90の範囲が好まし
い。ポリアミド樹脂の重量が70％を超えると寸法
安定性が低下し、また、10％以下になるとミクロ
ポーラス構造層が少なすぎ、印刷が不鮮明になつ
たり、紡糸時の変動により芯部のポリエステル樹
脂が表面に露出したりすることがあり、望ましく
ない。
該コンジユゲート繊維からなる基布としては、
鞘芯型に押出されたフイラメントを、巻取り、延
伸し、織機にて織物に仕上げたもの、延伸した糸
をスタツフイングボツクス等にてクリンプを賦与
した後、カツトし、紡績してから織布としたも
の、カツトされた糸をカーデイングして不織布と
したもの、鞘芯型に配分されて押出された糸条を
そのままエアジエツト等により延伸、移送し、一
気にウエブ化する、いわゆるスパンボンド法によ
つて得られる長繊維不織布などが挙げられる。こ
とに、スパンボンド法によつて得られる長繊維不
織布は、安価であり、任意に日付が調整でき、切
断部のホツレもなく、ラベル用素材として好まし
い。これらの基布は表面が繊維を形成している鞘
部のポリアミド樹脂で覆われており、前記のごと
く、ポリアミド樹脂の溶剤にて鞘部表層にミクロ
ポーラス層を形成させることができ、また、さら
に基布にポリアミド樹脂の溶液を塗布し、脱溶剤
凝固させることにより、ミクロポーラス層を形成
させることができ、非常に良好な寸法安定性を有
する印刷用基材が得られる。例えば、ポリエチレ
ンテレフタレートからなる帛布、ナイロン−６か
らなる長繊維不織布および本発明における鞘部に
ナイロン−６、芯部にポリエチレンテレフタレー
トを重量比45：55に配分したコンジユゲート繊維
からなる長繊維不織布について、絶乾状態から、
水中に１時間放置した場合の伸び率を測定すると
第１表のごとくなる。
The present invention relates to a printing substrate having a microporous layer, and particularly to a substrate suitable as a material for display labels attached to clothing, bedding, miscellaneous goods, etc. Labels are attached to clothing, bedding, miscellaneous goods, etc. to indicate the manufacturer, quality, handling precautions, etc. Conventionally, as one of the materials for display labels, a calcium chloride-methanol solution of polyamide resin is applied onto a base fabric made of polyamide resin fibers, and the solution is immersed in water to remove the solvent and coagulate. Printing substrates are used that are directly immersed in a methanol solution of calcium chloride, then squeezed, and then immersed in water to solidify to form a microporous layer of polyamide resin on the surface. The microporous layer of these printing substrates has excellent printability and is very suitable as a material for display labels, but the polyamide fiber base fabric has poor dimensional stability against heat and moisture. It has drawbacks such as shrinkage during ironing and expansion by absorbing moisture, making it difficult to perform offset printing. In order to eliminate this drawback, it has been proposed to use a base fabric such as polyester resin fiber with good dimensional stability and to form a microporous layer of polyamide resin on the surface thereof. However, although the dimensional stability of such base materials is improved, the adhesion between the base fabric and the polyamide resin layer forming the microporous structure is insufficient, and the polyamide resin layer easily peels off, making it difficult to use as a printing base. It is not suitable as a material. In addition, in order to prevent the polyamide resin layer that forms this microporous structure from peeling off, it has been proposed to use a polyisocyanate compound or the like to adhere it to the base fabric, but this would complicate the manufacturing process and cause the resulting product to deteriorate. There are problems such as decreased flexibility, and a fully satisfactory printing substrate with excellent printability and good dimensional stability has not yet been found. In view of these circumstances, the inventors of the present invention have made extensive studies to obtain a printing base material that eliminates these drawbacks, and as a result, the fibers constituting the base fabric have a specific structure, thereby improving printing suitability, etc. The present inventors have discovered that a printing substrate with excellent properties and dimensional stability can be obtained, and have completed the present invention. That is, the present invention provides a sheet having a microporous layer made of fibers having a structure in which a microporous layer of polyamide resin is formed around a fibrous polyester resin via a polyamide resin layer having substantially no micropores. The present invention provides a base material for shape printing. In the printing substrate of the present invention, the base fabric is composed of a conjugate fiber obtained by melt-spinning a polyester resin core and a polyamide resin sheath, and the base fabric is dipped in a polyamide resin solvent and squeezed. After that, it is immersed in water to coagulate to form a microporous structure on the surface layer of the polyamide resin sheath of each conjugate fiber of the base fabric, or a solution of the polyamide resin is applied onto the base fabric, and then a solvent is removed. By coagulating, a polyamide resin layer having a microporous structure is further formed around the polyamide resin sheath portion of each conjugate fiber. As shown in the schematic enlarged cross-sectional view of the attached FIG. It has a cross-sectional structure in which a microporous layer 3 of polyamide resin is formed. By exhibiting such a structure, the printing substrate of the present invention has a microporous layer of polyamide resin on its surface, so it has extremely excellent printability, and the core of the conjugate fiber is dimensionally stable. It is a polyester resin with good properties.
The surrounding polyamide resin layer is structurally strongly bonded to the core in its substantially pore-free portion, and the polyamide resin does not elongate against humidity and heat. On the other hand, since the shrinkage of the polyamide resin can be suppressed, it has very good dimensional stability, unlike those using conventional polyamide resin fiber base fabrics. Furthermore, even when a polyamide resin solution is applied, in addition to the polyester resin in the conjugate fiber core and the polyamide resin in the sheath being structurally bonded,
The applied polyamide resin is compatible with the polyamide resin of the sheath and strongly bonds with it, so it does not cause problems such as peeling as with conventional base materials using polyester resin fibers, and crosslinking of isocyanate compounds, etc. No drugs are required. Thus, the conjugate fiber used in the present invention is a sheath-core type fiber in which the periphery of the core filament is coated with a resin different from the core filament, and the core is made of a polyester resin such as polyethylene terephthalate or a copolymer mainly composed of polyethylene terephthalate, The sheath is made of polyamide resin such as nylon-6, nylon-66, or a copolymer mainly composed of these, and is melted and supplied from separate extruders, distributed in a molten state to the sheath core in a spin head, and then passed through a spinneret. It is obtained by discharging it in a filament shape. The weight ratio of these polyamide resins to polyester resins is preferably in the range of 70-10:30-90. If the weight of the polyamide resin exceeds 70%, dimensional stability will decrease, and if the weight is less than 10%, the microporous structure layer will be too small, resulting in unclear printing, and fluctuations during spinning may cause the polyester resin in the core to deteriorate. This is not desirable as it may be exposed on the surface. The base fabric made of the conjugate fibers is as follows:
The filament extruded into a sheath-core type is wound up, stretched, and finished into a woven fabric using a loom.The stretched thread is crimped using a stuffing box, etc., then cut, spun, and then woven. Non-woven fabrics are produced by carding cut yarns, and by the so-called spunbond method, in which the extruded yarns distributed in a sheath-core type are stretched and transferred using an air jet, etc., and made into a web all at once. Examples include long-fiber nonwoven fabrics obtained by In particular, the long fiber nonwoven fabric obtained by the spunbond method is inexpensive, the date can be adjusted arbitrarily, and there is no fraying at the cut portion, making it preferable as a material for labels. These base fabrics are covered with a polyamide resin sheath whose surface forms fibers, and as mentioned above, a microporous layer can be formed on the surface of the sheath using a solvent for the polyamide resin, and Furthermore, a microporous layer can be formed by applying a polyamide resin solution to the base fabric and coagulating it to remove the solvent, resulting in a printing base material with very good dimensional stability. For example, regarding a cloth made of polyethylene terephthalate, a long-fiber nonwoven fabric made of nylon-6, and a long-fiber nonwoven fabric made of a conjugate fiber in which nylon-6 is distributed in the sheath part and polyethylene terephthalate is distributed in the core part in a weight ratio of 45:55 in the present invention. , from an extremely dry state,
Table 1 shows the elongation rate measured after being left in water for 1 hour.
【表】
このように、本発明で用いるコンジユゲート繊
維の基布はナイロン−６の基布に比べ、著しく寸
法安定性にすぐれる。
基布上にポリアミド樹脂の溶液を塗布する場合
のポリアミド樹脂としては、ナイロン−６、ナイ
ロン−66が用いられ、これらはコンジユゲート繊
維鞘部のポリアミド樹脂と同一でも、あるいは異
なつていてもよく、さらにＮ−メトキシメチルナ
イロンを添加して基布の性能を高めることも有効
である。
ミクロポーラス構造の形成は従来のナイロン繊
維の基布を用いたものと同様に行なえ、例えば、
基布を直接30〜40％（重量％、以下同じ）の塩化
カルシウムを含有する塩化カルシウムのメタノー
ル溶液に浸漬し、ついで搾液後、水に浸漬して凝
固させる。また、ポリアミド樹脂の溶液を塗布す
る場合は、例えば、塩化カルシウム20〜30％、メ
タノール50〜65％、前記のようなポリアミド樹脂
10〜30％、所望により、炭酸カルシウムのような
充填剤、可塑剤などを含有する塗料を、例えば、
60〜200ｇ／m2の塗布量で基布上に塗布し、これ
を水に浸漬して脱溶剤凝固させる。
本発明の印刷用基材はシート状物として得るこ
とができ、これを印刷前もしくは後に所望のサイ
ズに裁断する。基材の各コンジユゲート繊維の交
点はミクロポーラス構造形成時に相互に溶解接着
しており、裁断箇所からホツレたりすることもな
い。このように、本発明の印刷用基材はすぐれた
印刷適性、寸法安定性を有し、オフセツト印刷を
施すこともでき、表示ラベル用素材としてきわめ
て好適であり、また、これに限らず、一般の各種
印刷材料としても使用でき、しかも、場合によ
り、被着体にヒートシールできる利点も有する。
つぎに実施例および比較例を挙げて本発明をさ
らに詳しく説明する。
実施例 １
鞘部にナイロン−６、芯部にポリエチレンテレ
フタレートを重量比50：50にて溶融押出し、その
ままエアジエツトで5000ｍ／分の速度で延伸、移
送し、コンベア上に日付重量50ｇ／m2となるよう
に散布し、ついで加熱ロールで表面毛羽が止まる
程度にプレスして鞘芯型コンジユゲート長繊維不
織布の基布を得る。この基布を、塩化カルシウム
50重量部をメタノール100重量部に溶解した浴中
に浸漬し、ついで含浸量が30ｇ／m2になるように
マングルで搾液する。これを水に浸漬して凝固さ
せ、水洗、乾燥して所望の印刷用基材を得る。
実施例 ２
ポリエチレンテレフタレート：ナイロン−６の
重量比を70：30として溶融紡糸して得られたポリ
エチレンテレフタレートを芯部、ナイロン−６を
鞘部とするコンジユゲート繊維からなる目付重量
50ｇ／m2の長繊維不織布の両面に付着量が120
ｇ／m2になるように、つぎの処方の塗料を塗布す
る。
成 分 重量部
ナイロン−６ 20
メタノール 58
塩化カルシウム 24
炭酸カルシウム ７
塗布後、水中に５分間浸漬し、水洗、乾燥し、
ロール掛けして、厚さ0.12mmの、所望の印刷用基
材を得る。
比較例 １
厚さ0.15mm、目付重量70ｇ／m2のナイロン−６
長繊維不織布を、メタノール100重量部に塩化カ
ルシウム50重量部を溶解した浴中に浸漬し、つい
で含浸量が30ｇ／m2になるようにマングルで搾液
する。これを水に浸漬して凝固させ、水洗、乾燥
して印刷用基材を得る。
比較例 ２
厚さ0.15mm、目付重量70ｇ／m2のナイロン−６
長繊維不織布の両面に実施例２と同様な塗料を付
着量が120ｇ／m2となるように塗布する。これを
水中に５分間浸漬し、水洗、乾燥後、ロール掛け
して厚さ0.12mmの印刷用基材を得る。
比較例 ３
厚さ0.12mm、目付重量45ｇ／m2のポリエチレン
テレフタレート長繊維不織布の両面に実施例２と
同様な塗料を付着量が120ｇ／m2となるように塗
布する。これを水中に５分間浸漬し、水洗、乾燥
後、ロール掛けして厚さ0.11mmの印刷用基材を得
る。
これらの実施例および比較例で得られた印刷用
基材のピツキングおよび寸法安定性をつぎのよう
にして試験した。
ピツキング
JIS P8129の「紙および板紙の表面強さ試験方
法」におけるワツクス法に従つて試験し、デニソ
ンワツクスナンバーが5A以下を×、10A以上を
〇とした。
寸法安定性
20℃、相対湿度65％の雰囲気で24時間エージン
グした基材を水に浸漬し、１分後の伸長率が1.5
％以上を×、0.5％以下を〇とした。
結果を第２表に示す。[Table] As shown, the conjugate fiber base fabric used in the present invention has significantly better dimensional stability than the nylon-6 base fabric. When applying a polyamide resin solution onto the base fabric, nylon-6 and nylon-66 are used as the polyamide resin, and these may be the same as or different from the polyamide resin of the conjugate fiber sheath. Furthermore, it is also effective to improve the performance of the base fabric by adding N-methoxymethyl nylon. The formation of a microporous structure can be performed in the same way as using a conventional nylon fiber base fabric, for example,
The base fabric is directly immersed in a methanol solution of calcium chloride containing 30 to 40% (weight %, same hereinafter) of calcium chloride, and then, after squeezing, it is immersed in water to coagulate. In addition, when applying a polyamide resin solution, for example, calcium chloride 20-30%, methanol 50-65%, polyamide resin as mentioned above, etc.
For example, paints containing 10-30% optionally fillers such as calcium carbonate, plasticizers, etc.
It is applied onto a base fabric in an amount of 60 to 200 g/m 2 , and then immersed in water to remove the solvent and coagulate. The printing substrate of the present invention can be obtained in the form of a sheet, which is cut into a desired size before or after printing. The intersection points of each conjugate fiber of the base material are melted and bonded to each other during the formation of the microporous structure, and there is no fraying from the cut location. As described above, the printing substrate of the present invention has excellent printability and dimensional stability, and can also be subjected to offset printing, making it extremely suitable as a material for display labels. It can also be used as a variety of printing materials, and it also has the advantage of being heat-sealable to adherends in some cases. Next, the present invention will be explained in more detail with reference to Examples and Comparative Examples. Example 1 Nylon-6 for the sheath and polyethylene terephthalate for the core were melt-extruded at a weight ratio of 50:50, stretched and transferred using an air jet at a speed of 5000 m/min, and placed on a conveyor with a weight of 50 g/m 2 . Then, the base fabric of the sheath-core type conjugate long fiber nonwoven fabric is obtained by pressing with a heating roll to the extent that the surface fuzz is stopped. Calcium chloride
It is immersed in a bath containing 50 parts by weight dissolved in 100 parts by weight of methanol, and then squeezed with a mangle so that the amount of impregnation is 30 g/m 2 . This is immersed in water to solidify, washed with water, and dried to obtain a desired printing substrate. Example 2 Fabric weight consisting of a conjugate fiber having a core of polyethylene terephthalate and a sheath of nylon-6 obtained by melt spinning at a weight ratio of polyethylene terephthalate: nylon-6 of 70:30
The adhesion amount is 120 on both sides of the 50g/ m2 long fiber nonwoven fabric.
Apply a paint with the following formulation to achieve g/m 2 . Ingredients Parts by weight Nylon-6 20 Methanol 58 Calcium chloride 24 Calcium carbonate 7 After application, soak in water for 5 minutes, rinse with water, dry,
Roll to obtain the desired printing substrate with a thickness of 0.12 mm. Comparative example 1 Nylon-6 with a thickness of 0.15 mm and a basis weight of 70 g/m 2
A long-fiber nonwoven fabric is immersed in a bath containing 50 parts by weight of calcium chloride dissolved in 100 parts by weight of methanol, and then squeezed with a mangle so that the amount of impregnation is 30 g/m 2 . This is immersed in water to solidify, washed with water, and dried to obtain a printing base material. Comparative example 2 Nylon-6 with a thickness of 0.15 mm and a basis weight of 70 g/m 2
The same paint as in Example 2 was applied to both sides of the long fiber nonwoven fabric so that the coating amount was 120 g/m 2 . This was immersed in water for 5 minutes, washed with water, dried, and then rolled to obtain a printing base material with a thickness of 0.12 mm. Comparative Example 3 The same paint as in Example 2 was applied to both sides of a polyethylene terephthalate long fiber nonwoven fabric with a thickness of 0.12 mm and a basis weight of 45 g/m 2 so that the coating amount was 120 g/m 2 . This was immersed in water for 5 minutes, washed with water, dried, and then rolled to obtain a printing base material with a thickness of 0.11 mm. The picking and dimensional stability of the printing substrates obtained in these Examples and Comparative Examples were tested as follows. Pickking Tested according to the wax method in JIS P8129 "Surface strength testing methods for paper and paperboard", and Denison wax numbers of 5A or less were marked as ×, and those with a Denison wax number of 10A or more were marked as ○. Dimensional stability The base material was aged for 24 hours at 20℃ and 65% relative humidity, and the elongation rate after 1 minute was 1.5.
% or more was marked ×, and 0.5% or less was marked ○. The results are shown in Table 2.
【表】
この結果から明らかなごとく、比較例１および
２の基材（従来のポリアミド樹脂繊維を用いたも
の）は寸法安定性が悪く、また、比較例３の基材
（ポリエステル樹脂繊維を用いたもの）はポリア
ミド樹脂のミクロポーラス層と基布のポリエステ
ル樹脂との結合が弱く、ピツキングが悪い。これ
に対し、本発明の印刷用基材はピツキング、寸法
安定性ともきわめてすぐれている。[Table] As is clear from the results, the base materials of Comparative Examples 1 and 2 (using conventional polyamide resin fibers) had poor dimensional stability, and the base materials of Comparative Example 3 (using polyester resin fibers) had poor dimensional stability. The bond between the microporous layer of polyamide resin and the polyester resin of the base fabric is weak, and picking is poor. On the other hand, the printing substrate of the present invention has extremely excellent picking and dimensional stability.
第１図は本発明の印刷用基材を構成する繊維の
模式的拡大断面図である。図面中の符号はつぎの
ものを意味する。
１：ポリエステル樹脂芯部、２：実質的に微細
孔を有しないポリアミド樹脂層、３：ポリアミド
樹脂ミクロポーラス層。
FIG. 1 is a schematic enlarged sectional view of fibers constituting the printing substrate of the present invention. The symbols in the drawings mean the following. 1: Polyester resin core, 2: Polyamide resin layer having substantially no micropores, 3: Polyamide resin microporous layer.
Claims (1)
を有しないポリアミド樹脂層を介してポリアミド
樹脂のミクロポーラス層を形成させた構造の繊維
からなることを特徴とするミクロポーラス層を有
するシート状印刷基材。1. A sheet-like printing base having a microporous layer, characterized in that it is made of fibers having a structure in which a microporous layer of polyamide resin is formed around a fibrous polyester resin via a polyamide resin layer having no micropores. Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55153631A JPS5777372A (en) | 1980-10-30 | 1980-10-30 | Printing base material having microporous layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55153631A JPS5777372A (en) | 1980-10-30 | 1980-10-30 | Printing base material having microporous layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5777372A JPS5777372A (en) | 1982-05-14 |
| JPS6410621B2 true JPS6410621B2 (en) | 1989-02-22 |
Family
ID=15566717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55153631A Granted JPS5777372A (en) | 1980-10-30 | 1980-10-30 | Printing base material having microporous layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5777372A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02160966A (en) * | 1988-12-13 | 1990-06-20 | Unitika Ltd | Nonwoven fabric of continuous fiber and production thereof |
-
1980
- 1980-10-30 JP JP55153631A patent/JPS5777372A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5777372A (en) | 1982-05-14 |
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