JPH0541009Y2 - - Google Patents

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Publication number
JPH0541009Y2
JPH0541009Y2 JP1988078155U JP7815588U JPH0541009Y2 JP H0541009 Y2 JPH0541009 Y2 JP H0541009Y2 JP 1988078155 U JP1988078155 U JP 1988078155U JP 7815588 U JP7815588 U JP 7815588U JP H0541009 Y2 JPH0541009 Y2 JP H0541009Y2
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【考案の詳細な説明】[Detailed explanation of the idea]

(産業上の利用分野) この考案はテープ基材に関し、その目的はテー
プ基材の幅方向に対する手切れ性が極めて良好
で、幅方向に手で切断する際の斜裂けが確実に防
止され、その切口も美しく、また使用中の衝撃に
よる不慮の切断が防止され、しかも幅方向のカー
ルも生じ難いなど優れた使用性を有するテープ基
材の提供にある。 (従来技術) 従来、テープ基材としては第2図に示すものが
あつた。 このテープ基材aは、経糸bと緯糸cとを織成
して構成された基布dの片面にラミネート層eが
熱融着状態で被覆されたもので、例えば片面に粘
着剤層を塗布形成して粘着テープ等として用いら
れるものであつた。 このテープ基材aでは、幅方向に対する手切れ
性を良好にするため、経糸bを極細とし、この経
糸bをラミネート層e形成時の熱融着時の熱によ
る劣化で更に強度を弱めたり、経糸bの打込本数
を少なくしたり、また経糸bの延伸比を小さくし
たりする等、経糸bが緯糸cに比べて切断され易
いように構成されていた。 また、実願昭62−162274号に添付の明細書(実
開平1−65833号)においては、経糸が緯糸の1/2
以下1/4以内の低デニールのフラツトヤーンを用
い、経糸と緯糸の間隔が殆どない高密度の組織に
対し、緯糸と緯糸の打込組織は平行均一な折目空
間部を積極的に構成した熱可塑性樹脂の細番手フ
ラヤーンクロスシートの基布の表裏両面にクロス
シートと同質のラミネート層を設け、さらにその
片面に感圧接着剤を形成したフラツトヤーン粘着
テープも記載されていた。 (考案が解決しようとする課題) しかしながら、前記第2図に示すテープ基材a
では、上述の通り経糸bが切断され易く構成され
ているため、長尺方向に対する全体の引張強度が
弱くなり、使用中の衝撃でテープ基材が不慮に切
断するという不備があつた。 また、ラミネート層eが基布dの片面にのみし
か形成されていないため、ラミネート層eの熱融
着処理が1回のみであり、経糸bが1回の加熱で
は十分に熱劣化せず、テープ基材aの幅方向に対
する手切れ性が悪くなる場合があつた。 更に、片側のみのラミネート層eでは経糸b及
び緯糸cがラミネート層eに十分に融着しない場
合も生じ、ラミネート層eと経糸bとが離れ、テ
ープ基材aを幅方向に切断する際の負荷が経糸b
に確実にかかり難く、テープ基材aを手で幅方向
に切断する際に緯糸cが切断されて斜裂けが生じ
る場合があつた。 また、ラミネート層eと経糸bとが確実に一体
化されていないことにより、テープ基材aを手で
幅方向に切断した際にラミネート層eの切断個所
と経糸bの切断個所とが相違してラミネート層e
の切口から経糸bの切断端部が飛び出す等、切口
が汚くなり易かつた。 更に、片面のみのラミネート層eではテープ基
材aが幅方向にカールする恐れがあつた。 このように、単に基布dの経糸bを切断し易く
するのでは、テープ基材aの幅方向に対する手切
れ性は良好になるものの、使用中の衝撃でテープ
基材aが不慮に切断したり、テープ基材aを手で
幅方向に切断する際に斜裂けが生じたり、切口が
汚くなる等の種々の問題が生じるという課題が存
在した。 一方、実願昭62−162274号添付の明細書(実開
平1−65833号)にて記載されているフラツトヤ
ーン粘着テープでは、経糸に低デニールのフラツ
トヤーンを用い、且つ経組織は殆ど間隔のない高
密度繊維で形成されているため、緯方向と比較す
ると若干経方向の方が強く構成されているが、そ
の強弱の程度にあまり大差がなく、粘着テープを
幅方向に切断する際には、その負荷が経糸に対し
て確実にはかからないという課題が存在した。 また、基布の表裏両面に形成されているラミネ
ート層は、基布と積層状態で設けられている構成
とされているため、この粘着テープを幅方向に対
して手切れする際には、高密度組織に構成された
経糸とラミネート層とが分離されてしまう恐れが
あつた。 従つて、この技術の粘着テープは、幅方向に対
する手切れ性が悪くなり、斜裂けが生じる、或い
は幅方向に切断した後の切り口にほつれが生じて
しまうなど、使用性に問題が生じるなどの課題が
存在した。 (課題を解決するための手段) 以上のような実情に鑑み、業界では使用中の衝
撃による不慮の切断が防止され、幅方向に対する
手切れ性が良く、手で幅方向に切断する際の斜裂
けが防止され、切口も美しく、また幅方向のカー
ルも生じない使用性の良好なテープ基材の創出が
望まれていた。 すなわち、この考案では基布の経糸と緯糸とが
共に熱可塑性樹脂のフラツトヤーンで構成され、
緯糸の厚さが経糸の厚さ1.5倍以上とされ、かつ
この基布の両面に熱可塑性樹脂のラミネート層が
それぞれ網目を介して一体に熱融着状態で被覆さ
れてなるテープ基材を提供することにより上記課
題を解決する。 (作用) 基布を構成する緯糸及び経糸の厚みに着目し、
緯糸の厚さを経糸の1.5倍以上とすることにより
基布両面からの熱可塑性樹脂による熱融着時、厚
みの低い経糸についてはその両面を熱劣化させて
剪断強度の低下を生じさせて、一方緯糸に対して
は経糸ほどには劣化させず、緯糸・経糸の剪断強
度に明確な強弱を与えるとともに、剪断強度の低
下した経糸については、網目を介して一体に熱融
着状態で被覆されるラミネート層により、不動状
態で固定されるといつた構成を採用することによ
り、テープ基材の幅方向に対する剪断負荷が経糸
に確実にかけられ、幅方向に対する手切れ性が極
めて良好となり、斜裂けが有効に防止される。 また、手切れの際には、経糸とラミネート層と
が分離されることがないので、切口のほつれが防
止される。 (考案の構成) この考案の構成を図面にもとづいて説明する。 第1図Aはこの考案の一構成例に係るテープ基
材の厚さ方向断面図、同図Bは同テープ基材に用
いる基布の斜視図である。 図中1はテープ基材であり、片面に粘着剤層を
塗布形成して粘着テープにする他、他用途のテー
プ基材として用いられる。 2は基布、3はラミネート層である。 基布2は経糸4と緯糸5とから構成されてい
る。 経糸4と緯糸5とは共に熱可塑性樹脂のフラツ
トヤーンで構成されている。 経糸4と緯糸5とを熱可塑性樹脂で構成した理
由は、後述するように基布2にラミネート層3を
熱融着状態で被覆する際に、基布2の経糸4をラ
ミネート層3に熱融着した不動の状態で一体化さ
せ、テープ基材1を手で幅方向に切断する際の負
荷が経糸4に確実にかかるようにし、幅方向に対
するテープ基材1の手切れ性を良くするためであ
り、また緯糸5も同様にラミネート層3に一体化
させ、テープ基材1を手で幅方向に切断する際の
斜裂けを防止するためであり、更には、熱融着の
際の熱で特に経糸4を熱劣化させ、剪断強度を弱
め、テープ基材1の幅方向に対する手切れ性を確
実とするためである。 熱可塑性樹脂の種類は特に限定されないが、ポ
リオレフイン系樹脂が好適に使用され、具体的に
はポリエチレン、ポリプロピレン、ポリブテン−
1等の密度が0.91〜0.97のオレフイン系ホモ重合
体、或いはエチレン−プロピレン共重合体、また
はモノオレフイン不飽和単量体とこれを共重合し
得る一種またはそれ以上の他のオレフイン不飽和
単量体等の共重合物が好適に使用される。 経糸4の太さは特に限定されないが、50〜150
デニール(以下「d」という)が望ましい。 50d未満では引張強度が比較的弱く、テープ基
材1の長尺方向に対する引張負荷でテープ基材1
が使用中の衝撃により不慮に切断され易い不備が
あり、他方、150dを越えると剪断強度が大きく
なり過ぎ、テープ基材1の幅方向に対する手切れ
性が悪くなる恐れがあるからである。 経糸4の伸度は特に限定されないが、10〜35%
が望ましい。 10%未満では伸びが少なく、引張強度が弱く、
テープ基材1が使用中の衝撃により不慮に切断さ
れ易い不備があり、他方、35%を越えると伸長性
が大きくなり過ぎ、容易に伸長変形し、幅方向に
対する切断負荷が緩衝され、テープ基材1の幅方
向に対する手切れ性が悪くなるからである。 緯糸5の厚さは経糸4の厚さの1.5倍以上とさ
れている。 その理由は緯糸5の厚さが経糸4の厚さの1.5
倍未満であると、後述するラミネート層3を熱融
着する際の熱で経糸4はもとより緯糸5も厚さ方
向両面からの熱を受けて劣化し、緯糸5の剪断強
度が低下し、テープ基材1を手で幅方向に切断す
る際の切断負荷で緯糸5も経糸4とともに切断さ
れ、テープ基材1の斜裂けの原因となるからであ
る。 緯糸5の太さは特に限定されないが、経糸4よ
り高デニールとされるのが望ましい。 その理由は後述するように基布2をラミネート
層3を熱融着させた場合に、経糸4よりも緯糸5
の熱劣化を少なくし、緯糸5の剪断強度の低下を
抑え、テープ基材1の幅方向に対する剪断負荷で
経糸4のみを切断させ、緯糸5が切断されるのを
防止し、手でテープ基材1を幅方向に切断する際
の斜裂けを有効に防止するためである。 緯糸5の太さはデニールで経糸4の4/3〜8倍、
すなわち200〜400dが望ましい。 200d未満では剪断強度が弱く、テープ基材1
の幅方向の切断負荷で経糸4とともに緯糸5も容
易に切断され、テープ基材1を手で幅方向に切断
する際に斜裂けの原因となり易く、他方、400d
を越えると柔軟性に欠け、基布2の織成が困難と
なるとともにテープ基材1全体に平滑性が失われ
るという問題が生じるからである。 緯糸5の伸度は特に限定されないが、15%以上
とするのが望ましい。 15%未満であると緯糸5が脆くなり、幅方向の
切断負荷で経糸4とともに緯糸5が容易に切断さ
れ、テープ基材1を手で幅方向に切断する際に斜
裂けの原因となり易いからである。 緯糸5の打込本数も特に限定されるものではな
いが、10〜35本/インチ(以下「本/in」とい
う)とするのが望ましい。 緯糸5相互の離隔距離は特に限定されないが、
0.01〜3mmとするのが望ましい。 0.01mm未満であると緯糸5の密度が高くなり、
後述するよにラミネート層3,3を熱融着する際
の熱が緯糸5に多く奪われて経糸4に十分な熱が
伝達されず、経糸4の熱劣化が不十分となり、経
糸4の剪断強度が低下せず、テープ基材1の幅方
向に対する手切れ性が悪くなり、他方、3mmを越
えると経糸4の変形の自由度が大きくなり、テー
プ基材1の幅方向の切断負荷が経糸4の変形で緩
衝され、テープ基材1の幅方向に対する手切れ性
が悪くなり、また、後述するようにラミネート層
3を形成する際に経糸4が歪んで基布2がいわゆ
る目ずれを生じ、テープ基材1の外観が悪くなる
からである。 このようにして構成された基布2の両面には熱
可塑性樹脂のラミネート層3,3が熱融着状態で
形成されている。 ラミネート層3を熱融着状態で形成する理由
は、熱融着の際の熱で薄手に形成された経糸4に
熱劣化を生じさせ、経糸4の剪断強度を低下さ
せ、テープ基材1の幅方向に対する手切れ性を良
好にするためである。 ラミネート層3を基布2の両面に形成する理由
は、両面からの2工程の熱融着の熱で経糸4の熱
劣化を確実なものとし、経糸4の剪断強度低下に
よりテープ基材1の幅方向に対する手切れ性を更
に確実にするためである。 また、両ラミネート層3,3を基布2の網目を
通じて一体化し、テープ基材1の長尺方向の引張
強度を増大させ、テープ基材1が使用中の衝撃で
不慮に切断するのを防止するためであり、更に両
面のラミネート層3に経糸4及び緯糸5を確実に
固着させ、特に経糸4を確実に不動化し、テープ
基材1の幅方向の切断負荷が経糸4に確実にかか
るよようにし、テープ基材1の幅方向に対する手
切れ性を更に良くするためのものであり、また経
糸4不動化により経糸4のほつれを防止し、テー
プ基材1の切口を美しくするためである。 (考案の効果) 以上詳述した如く、この考案は基布の経糸と緯
糸とが共に熱可塑性樹脂のフラツトヤーンで構成
され、緯糸の厚さが経糸の厚さ1.5倍以上とされ、
かつこの基布の両面に熱可塑性樹脂のラミネート
層がそれぞれ網目を介して一体に熱融着状態で被
覆されてなるテープ基材であるから以下の効果を
奏する。 緯糸は経糸の1.5倍以上の厚さとされているの
で、ラミネート層を熱融着する際で経糸が劣化さ
れ、更には、このような基布の両面にはラミネー
ト層3が熱融着により網目を介して一体に被覆さ
れているから、経糸が熱劣化されていてもラミネ
ート層に不動の状態で固定され、テープ基材の幅
方向に対する切断負荷が経糸に確実にかかり、テ
ープ基材の幅方向に対する手切れ性がよい。 一方、緯糸は経糸に比べラミネート層の熱融着
の際の熱による劣化を受け難く、緯糸は経糸程に
は熱劣化による剪断強度の低下がないので、テー
プ基材を幅方向に切断する際に経糸のみが切断さ
れ、緯糸が切断されることがないので、テープ基
材を手で幅方向に切断する際に斜裂けが防止され
る。 また、経糸がラミネート層により不動状態で固
定されているので、経糸とラミネート層とが分離
されることがなく、テープ基材を幅方向に切断す
る際にラミネート層の切断個所と経糸の切断個所
とが常に一致し、ラミネート層の切口から経糸の
切断端部が飛び出ることがなく、切口が美しい。 更に、ラミネート層が基布の両面に形成されて
いるので、テープ基材が幅方向にカールすること
がない。 また、基布両面の両ラミネート層が基布の網目
を介してテープ基材に一体に熱融着されるので、
テープ基材の長尺方向に対する引張強度が増大
し、使用時の衝撃でテープ基材が不慮に切断され
ることがない。 次にこの考案の実施例及び実験例を掲げること
により上記効果を一層明確なものとする。 (実施例 1) 経糸にポリプロピレン系フラツトヤーンの太さ
120d(幅0.5mm、厚さ12μm)のものを用い、打込
本数45本/inとした。 緯糸にポリプロピレン系フラツトヤーンの太さ
300d(幅1.0mm、厚さ25μm)のものを用い、打込
本数15本/inとした。 また、緯糸相互の距離を0.56mmとした。 この経糸と緯糸とを織成した基布の両面に溶融
押出温度300℃でポリプロピレンを押出ラミネー
ト加工して施し、基布の両面に各々30μm厚さの
ラミネート層を熱融着状態で被覆してテープ基材
を得た。 このテープ基材の片面に長鎖アルキル系背面処
理剤を施し、他の片面に天然ゴムを主成分とする
感圧性粘着剤層を設けて粘着テープを得た。 (実施例 2) 緯糸の打込本数25本/inとし、緯糸相互の距離
を0.005mmとした他は実施例1と同様にして粘着
テープを得た。 (比較例 1) 緯糸のポリプロピレン系フラツトヤーンの厚さ
を15μm、打込本数25本/inとした他は実施例1
と同様にして粘着テープを得た。 <実験例 1> 実施例1,2と比較例1で得た粘着テープを用
い、幅方向に対する手切れ性、長尺方向に対する
引張強度、経方向及び緯方向に対する引裂強度を
測定した。 効果を第1表に示す。
(Industrial Application Field) This invention relates to a tape base material, and its purpose is to ensure that the tape base material has extremely good manual tearability in the width direction, reliably prevents diagonal tearing when manually cutting in the width direction, and It is an object of the present invention to provide a tape base material which has excellent usability such that its cut is beautiful, prevents accidental cutting due to impact during use, and is less likely to curl in the width direction. (Prior Art) Conventionally, there has been a tape base material shown in FIG. This tape base material a consists of a base fabric d constructed by weaving warp yarns b and weft yarns c, and one side of which is coated with a laminate layer e in a heat-sealed state.For example, an adhesive layer is coated on one side. It was used as adhesive tape, etc. In this tape base material a, in order to improve the hand tearability in the width direction, the warp yarns b are made extremely thin, and the strength of the warp yarns b is further weakened by deterioration due to heat during thermal fusion during the formation of the laminate layer e. The warp yarns b were designed to be cut more easily than the weft yarns c, such as by reducing the number of warp yarns b or by reducing the drawing ratio of the warp yarns b. In addition, in the specification attached to Utility Model Application No. 162274/1980 (Kokai No. 1-65833), the warp is 1/2 of the weft.
A low-denier flat yarn of less than 1/4 is used, and the warp and weft have a high-density structure with almost no space between them. A flat yarn adhesive tape was also described in which a laminate layer of the same quality as the cloth sheet was provided on both the front and back sides of a base fabric of a fine count fly yarn cloth sheet of plastic resin, and a pressure-sensitive adhesive was further formed on one side. (Problem to be solved by the invention) However, the tape base a shown in FIG.
As described above, since the warp yarns b are easily cut, the overall tensile strength in the longitudinal direction is weak, resulting in the tape base material being accidentally cut due to impact during use. In addition, since the laminate layer e is formed only on one side of the base fabric d, the heat fusion treatment of the laminate layer e is performed only once, and the warp yarns b are not sufficiently thermally deteriorated by one heating. In some cases, the tape base material a had poor manual tearability in the width direction. Furthermore, with the laminate layer e on only one side, the warp yarns b and weft yarns c may not be sufficiently fused to the laminate layer e, and the laminate layer e and the warp yarns b may become separated, causing problems when cutting the tape base material a in the width direction. Load is warp B
When cutting the tape base material a in the width direction by hand, the weft c was sometimes cut and a diagonal tear occurred. Furthermore, since the laminate layer e and the warp yarns b are not reliably integrated, when the tape base material a is cut by hand in the width direction, the cut point of the laminate layer e and the cut point of the warp yarn b are different. laminate layer e
The cut ends of the warp yarns B were likely to protrude from the cut ends, resulting in dirt. Furthermore, with the laminate layer e having only one side, there was a risk that the tape base material a would curl in the width direction. In this way, simply making it easier to cut the warp yarns b of the base fabric d will improve the hand-tearability of the tape base material a in the width direction, but the tape base material a may be accidentally cut due to impact during use. In addition, there have been various problems such as diagonal tears occurring when the tape base material a is manually cut in the width direction, and the cut edges becoming dirty. On the other hand, in the flat yarn adhesive tape described in the specification attached to Utility Model Application No. 162274/1983 (Kokai No. 65833/1999), a low denier flat yarn is used for the warp yarns, and the warp structure is a high pitched yarn with almost no spacing. Because it is made of dense fibers, it is slightly stronger in the warp direction than in the weft direction, but there is not much difference in the degree of strength, so when cutting the adhesive tape in the width direction, There was a problem in that the load was not reliably applied to the warp threads. In addition, the laminate layers formed on both the front and back sides of the base fabric are laminated with the base fabric, so when cutting this adhesive tape by hand in the width direction, it is difficult to There was a risk that the warp yarns and the laminate layer, which were structured in a dense structure, would be separated. Therefore, the adhesive tape using this technology has problems with usability, such as poor hand-cutting in the width direction, resulting in diagonal tears, or fraying at the cut end after cutting in the width direction. There were challenges. (Means for solving the problem) In view of the above-mentioned circumstances, the industry has developed measures to prevent accidental cutting due to impact during use, to ensure easy manual cutting in the width direction, and to prevent diagonal cuts when manually cutting in the width direction. It has been desired to create a tape base material that is easy to use, prevents tearing, has a beautiful cut edge, and does not curl in the width direction. That is, in this invention, both the warp and weft of the base fabric are composed of thermoplastic resin flat yarns,
Provided is a tape base material in which the thickness of the weft yarn is at least 1.5 times the thickness of the warp yarn, and in which both sides of this base fabric are integrally coated with thermoplastic resin laminate layers through a mesh in a heat-sealed state. By doing so, the above problem is solved. (Function) Focusing on the thickness of the weft and warp that make up the base fabric,
By setting the thickness of the weft yarn to be 1.5 times or more that of the warp yarn, when heat-sealing the thermoplastic resin from both sides of the base fabric, both sides of the warp yarn with a low thickness are thermally deteriorated, causing a decrease in shear strength. On the other hand, the weft yarns do not deteriorate as much as the warp yarns, giving distinct strengths and weaknesses to the shear strength of the weft yarns and warp yarns, and the warp yarns with decreased shear strength are coated integrally through a mesh in a heat-sealed state. By adopting a configuration in which the laminate layer is fixed in an immovable state, the shear load in the width direction of the tape base material is reliably applied to the warp threads, making it extremely easy to cut by hand in the width direction, and preventing diagonal tearing. is effectively prevented. Further, when cutting by hand, the warp threads and the laminate layer are not separated, so fraying at the cut end is prevented. (Structure of the invention) The structure of this invention will be explained based on the drawings. FIG. 1A is a sectional view in the thickness direction of a tape base material according to one configuration example of this invention, and FIG. 1B is a perspective view of a base fabric used for the tape base material. In the figure, reference numeral 1 is a tape base material, which is used not only to form an adhesive tape by coating one side with an adhesive layer, but also as a tape base material for other purposes. 2 is a base fabric, and 3 is a laminate layer. The base fabric 2 is composed of warp threads 4 and weft threads 5. Both the warp threads 4 and the weft threads 5 are made of thermoplastic resin flat yarns. The reason why the warp threads 4 and the weft threads 5 are made of thermoplastic resin is that when covering the base fabric 2 with the laminate layer 3 in a heat-sealed state, the warp threads 4 of the base fabric 2 are made of thermoplastic resin. By integrating them in a fused and immovable state, the load when cutting the tape base material 1 in the width direction by hand is reliably applied to the warp threads 4, thereby improving the ease of manual cutting of the tape base material 1 in the width direction. This is to prevent diagonal tearing when the tape base material 1 is manually cut in the width direction by integrating the weft yarn 5 into the laminate layer 3, and also to prevent diagonal tearing when the tape base material 1 is cut by hand in the width direction. This is to ensure that the warp yarns 4 in particular are thermally degraded by heat, weakening the shear strength, and can be easily cut by hand in the width direction of the tape base material 1. The type of thermoplastic resin is not particularly limited, but polyolefin resins are preferably used, specifically polyethylene, polypropylene, and polybutene.
An olefinic homopolymer having a density of 0.91 to 0.97, or an ethylene-propylene copolymer, or one or more other olefinic unsaturated monomers that can be copolymerized with a monoolefinic unsaturated monomer. A copolymer such as a copolymer is preferably used. The thickness of the warp threads 4 is not particularly limited, but may be 50 to 150.
Denier (hereinafter referred to as "d") is desirable. If the tensile strength is less than 50d, the tensile strength is relatively weak, and the tensile strength of the tape base material 1 in the longitudinal direction of the tape base material 1 is
This is because the tape base material 1 has the disadvantage that it is easily cut accidentally due to impact during use, and on the other hand, if it exceeds 150 d, the shear strength becomes too large and there is a risk that the tape base material 1 may have poor manual tearability in the width direction. The elongation of the warp threads 4 is not particularly limited, but is 10 to 35%.
is desirable. If it is less than 10%, there will be little elongation and low tensile strength.
There is a defect that the tape base material 1 is easily cut accidentally due to impact during use.On the other hand, if the elongation exceeds 35%, the elongation becomes too large and it is easily elongated and deformed.The cutting load in the width direction is buffered, and the tape base material This is because the material 1 becomes difficult to cut by hand in the width direction. The thickness of the weft threads 5 is said to be at least 1.5 times the thickness of the warp threads 4. The reason is that the thickness of weft 5 is 1.5 of the thickness of warp 4.
If it is less than double, the warp yarns 4 as well as the weft yarns 5 will receive heat from both sides in the thickness direction and deteriorate due to the heat generated when the laminate layer 3 is thermally bonded (described later), and the shear strength of the weft yarns 5 will decrease, resulting in a tape This is because the weft yarns 5 are also cut together with the warp yarns 4 due to the cutting load when cutting the base material 1 in the width direction by hand, causing diagonal tearing of the tape base material 1. Although the thickness of the weft yarns 5 is not particularly limited, it is desirable that the denier be higher than that of the warp yarns 4. The reason for this is that when the base fabric 2 is heat-sealed to the laminate layer 3, as will be described later, the weft 5 is larger than the warp 4.
This reduces the thermal deterioration of the weft threads 5, suppresses the decrease in shear strength of the weft threads 5, causes only the warp threads 4 to be cut by the shear load in the width direction of the tape base material 1, and prevents the weft threads 5 from being cut. This is to effectively prevent diagonal tearing when cutting the material 1 in the width direction. The thickness of weft thread 5 is denier and is 4/3 to 8 times that of warp thread 4.
That is, 200 to 400 d is desirable. If it is less than 200d, the shear strength is weak and tape base material 1
The weft yarns 5 as well as the warp yarns 4 are easily cut under the cutting load in the width direction of
This is because if it exceeds this, there will be a problem that flexibility will be lacking, making it difficult to weave the base fabric 2, and that the entire tape base material 1 will lose its smoothness. The elongation of the weft yarn 5 is not particularly limited, but is preferably 15% or more. If it is less than 15%, the weft yarn 5 becomes brittle, and the weft yarn 5 is easily cut along with the warp yarn 4 under the cutting load in the width direction, which tends to cause diagonal tearing when cutting the tape base material 1 in the width direction by hand. It is. The number of weft yarns 5 is also not particularly limited, but it is preferably 10 to 35 yarns/inch (hereinafter referred to as "threads/in"). The distance between the weft yarns 5 is not particularly limited, but
It is desirable to set it to 0.01-3 mm. If it is less than 0.01 mm, the density of the weft yarn 5 will be high,
As will be described later, when the laminate layers 3, 3 are thermally bonded, much of the heat is absorbed by the weft 5, and sufficient heat is not transferred to the warp 4, resulting in insufficient thermal deterioration of the warp 4, and shearing of the warp 4. The strength does not decrease, and the hand cutting property in the width direction of the tape base material 1 deteriorates.On the other hand, if it exceeds 3 mm, the degree of freedom of deformation of the warp threads 4 increases, and the cutting load in the width direction of the tape base material 1 is reduced by the warp threads. 4, the tape base material 1 becomes difficult to cut by hand in the width direction.Furthermore, as will be described later, when forming the laminate layer 3, the warp threads 4 are distorted and the base fabric 2 causes so-called misalignment. This is because the appearance of the tape base material 1 deteriorates. Laminated layers 3, 3 of thermoplastic resin are formed in a heat-sealed state on both surfaces of the base fabric 2 constructed in this manner. The reason why the laminate layer 3 is formed in a heat-sealed state is that the heat during heat-sealing causes thermal deterioration of the thinly formed warp threads 4, reducing the shear strength of the warp threads 4, and reducing the shear strength of the tape base material 1. This is to improve the ease of manual cutting in the width direction. The reason why the laminate layer 3 is formed on both sides of the base fabric 2 is to ensure that the warp threads 4 are not thermally degraded by the heat of the two-step heat fusion from both sides, and the shear strength of the warp threads 4 is reduced, which causes the tape base material 1 to deteriorate. This is to further ensure the ease of manual cutting in the width direction. In addition, both laminate layers 3, 3 are integrated through the mesh of the base fabric 2, increasing the tensile strength of the tape base material 1 in the longitudinal direction, and preventing the tape base material 1 from being accidentally cut due to impact during use. This is to ensure that the warp threads 4 and the weft threads 5 are firmly fixed to the laminate layer 3 on both sides, and in particular, the warp threads 4 are reliably immobilized so that the cutting load in the width direction of the tape base material 1 is reliably applied to the warp threads 4. This is to further improve the hand-cutting property of the tape base material 1 in the width direction, and also to prevent the warp threads 4 from fraying by immobilizing the warp threads 4 and to make the cut edge of the tape base material 1 beautiful. . (Effects of the invention) As detailed above, in this invention, both the warp and weft of the base fabric are composed of flat yarns made of thermoplastic resin, and the thickness of the weft is at least 1.5 times the thickness of the warp.
Moreover, since the tape base material is formed by covering both sides of the base fabric with thermoplastic resin laminate layers in a heat-sealed state through a mesh, the following effects are achieved. Since the weft yarn is 1.5 times or more thick than the warp yarn, the warp yarn is deteriorated when the laminate layer is heat-sealed, and furthermore, the laminate layer 3 has a mesh pattern on both sides of the base fabric due to heat-sealing. Even if the warp threads are thermally deteriorated, they are fixed to the laminate layer in an immovable state, and the cutting load in the width direction of the tape base material is reliably applied to the warp threads, thereby reducing the width of the tape base material. Easy to cut by hand in any direction. On the other hand, weft yarns are less susceptible to deterioration due to heat during heat-sealing of the laminate layer than warp yarns, and weft yarns do not lose shear strength due to thermal deterioration as much as warp yarns do, so when cutting the tape base material in the width direction, Since only the warp threads are cut and the weft threads are not cut, diagonal tearing is prevented when the tape base material is manually cut in the width direction. In addition, since the warp threads are fixed in an immovable state by the laminate layer, the warp threads and the laminate layer are not separated, and when cutting the tape base material in the width direction, the laminate layer cut point and the warp cut point are separated. always match, the cut ends of the warp threads do not protrude from the cut end of the laminate layer, and the cut end is beautiful. Furthermore, since the laminate layer is formed on both sides of the base fabric, the tape base material will not curl in the width direction. In addition, since both laminate layers on both sides of the base fabric are integrally heat-sealed to the tape base material through the mesh of the base fabric,
The tensile strength of the tape base material in the longitudinal direction is increased, and the tape base material will not be accidentally cut due to impact during use. Next, the above effects will be made clearer by presenting examples and experimental examples of this invention. (Example 1) Thickness of polypropylene flat yarn for warp
A 120 d (width 0.5 mm, thickness 12 μm) was used, and the number of implants was 45 per inch. Thickness of polypropylene flat yarn for weft
A 300 d (width 1.0 mm, thickness 25 μm) was used, and the number of implants was 15 per inch. In addition, the distance between the wefts was set to 0.56 mm. Polypropylene is extruded and laminated at a melt extrusion temperature of 300°C on both sides of the base fabric woven with the warp and weft, and a 30 μm thick laminate layer is coated on each side of the base fabric in a heat-sealed state to form a tape. A base material was obtained. A long-chain alkyl backing agent was applied to one side of this tape base material, and a pressure-sensitive adhesive layer containing natural rubber as a main component was provided to the other side to obtain an adhesive tape. (Example 2) An adhesive tape was obtained in the same manner as in Example 1, except that the number of weft yarns was 25/in and the distance between the weft yarns was 0.005 mm. (Comparative Example 1) Example 1 except that the thickness of the polypropylene flat yarn of the weft was 15 μm and the number of yarns was 25 yarns/in.
An adhesive tape was obtained in the same manner as above. <Experimental Example 1> Using the adhesive tapes obtained in Examples 1 and 2 and Comparative Example 1, hand tearability in the width direction, tensile strength in the longitudinal direction, and tear strength in the warp and weft directions were measured. The effects are shown in Table 1.

【表】 第1表中の手切れ性の評価は〓○…良好
、△…やや劣る〓を示す。
第1表の結果から明らかな通り、手切れ性につ
して、比較例1は実施例1及び2に較べて劣る。 引張強度については、実施例1,2のものに比
べ経糸に対する緯糸の太さがdで4/3倍未満の比
較例1のものは強度が弱く、使用中に衝撃で不慮
に切断される恐れがある。 引裂強度については、実施例1,2のものに比
べ比較例1のものは経方向の強度が弱く、斜裂け
の恐れがある。
[Table] The evaluation of hand tearability in Table 1 is as follows: ○...good, △...slightly poor.
As is clear from the results in Table 1, Comparative Example 1 is inferior to Examples 1 and 2 in terms of manual tearability. Regarding tensile strength, Comparative Example 1, in which the thickness of the weft to the warp was less than 4/3 times d, was weaker than those of Examples 1 and 2, and there was a risk of it being accidentally cut by impact during use. There is. Regarding the tear strength, compared to those of Examples 1 and 2, the strength of Comparative Example 1 is weaker in the warp direction, and there is a risk of diagonal tearing.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図Aはこの考案の一構成例に係るテープ基
材の厚さ方向断面図、同図Bは同テープ基材に用
いる基布の斜視図、第2図は従来技術説明図であ
る。 1……テープ基材、2……基布、3……ラミネ
ート層、4……経糸、5……緯糸。
FIG. 1A is a sectional view in the thickness direction of a tape base material according to one configuration example of this invention, FIG. 1B is a perspective view of a base fabric used for the tape base material, and FIG. 2 is a diagram illustrating a prior art. 1... Tape base material, 2... Base fabric, 3... Laminate layer, 4... Warp, 5... Weft.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 基布の経糸と緯糸とが共に熱可塑性樹脂のフラ
ツトヤーンで構成され、緯糸の厚さが経糸の厚さ
の1.5倍以上とされ、かつこの基布の両面に熱可
塑性樹脂のラミネート層がそれぞれ網目を介して
一体に熱融着状態で被覆されてなるテープ基材。
The warp and weft of the base fabric are both composed of flat yarns made of thermoplastic resin, the thickness of the weft is at least 1.5 times the thickness of the warp, and a laminated layer of thermoplastic resin is meshed on both sides of the base fabric. A tape base material that is integrally coated with a heat-sealed material.
JP1988078155U 1988-06-13 1988-06-13 Expired - Lifetime JPH0541009Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988078155U JPH0541009Y2 (en) 1988-06-13 1988-06-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988078155U JPH0541009Y2 (en) 1988-06-13 1988-06-13

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Publication Number Publication Date
JPH023821U JPH023821U (en) 1990-01-11
JPH0541009Y2 true JPH0541009Y2 (en) 1993-10-18

Family

ID=31303103

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Application Number Title Priority Date Filing Date
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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4456175B1 (en) * 2009-10-09 2010-04-28 日本カラリング株式会社 Composite hinge sheet for laser marking laminate for electronic passport and laser marking laminate for electronic passport and electronic passport
WO2010095747A1 (en) * 2009-02-23 2010-08-26 日本カラリング株式会社 Multilayer laser-markable sheet for electronic passport and electronic passport

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2834628B2 (en) * 1992-12-25 1998-12-09 萩原工業株式会社 Adhesive tape
JP2005047234A (en) * 2003-07-31 2005-02-24 Nippon Petrochemicals Co Ltd Packaging material containing reinforcing layer and packaging bag using this packaging material

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0165833U (en) * 1987-10-23 1989-04-27

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010095747A1 (en) * 2009-02-23 2010-08-26 日本カラリング株式会社 Multilayer laser-markable sheet for electronic passport and electronic passport
JP4456175B1 (en) * 2009-10-09 2010-04-28 日本カラリング株式会社 Composite hinge sheet for laser marking laminate for electronic passport and laser marking laminate for electronic passport and electronic passport
WO2011043087A1 (en) * 2009-10-09 2011-04-14 日本カラリング株式会社 Composite hinge sheet for laser-marking multilayer laminate for electronic passport, laser-marking multilayer laminate for electronic passport, and electronic passport
JP2011079285A (en) * 2009-10-09 2011-04-21 Nippon Kararingu Kk Composite hinge sheet for laser-marking laminate for electronic passport, laser-marking laminate for the electronic passport, and electronic passport

Also Published As

Publication number Publication date
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