JPH0232384B2 - - Google Patents
Info
- Publication number
- JPH0232384B2 JPH0232384B2 JP57141340A JP14134082A JPH0232384B2 JP H0232384 B2 JPH0232384 B2 JP H0232384B2 JP 57141340 A JP57141340 A JP 57141340A JP 14134082 A JP14134082 A JP 14134082A JP H0232384 B2 JPH0232384 B2 JP H0232384B2
- Authority
- JP
- Japan
- Prior art keywords
- cloth
- ethylene
- synthetic resin
- resin
- woven
- 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 - Lifetime
Links
- 239000004744 fabric Substances 0.000 claims description 69
- 229920001577 copolymer Polymers 0.000 claims description 28
- 229920005989 resin Polymers 0.000 claims description 23
- 239000011347 resin Substances 0.000 claims description 23
- 229920005672 polyolefin resin Polymers 0.000 claims description 15
- 229920003002 synthetic resin Polymers 0.000 claims description 14
- 239000000057 synthetic resin Substances 0.000 claims description 14
- 239000004711 α-olefin Substances 0.000 claims description 14
- 229920005992 thermoplastic resin Polymers 0.000 claims description 12
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 11
- 239000011342 resin composition Substances 0.000 claims description 9
- 239000008187 granular material Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 description 20
- 238000009941 weaving Methods 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 17
- 239000000463 material Substances 0.000 description 15
- 238000005336 cracking Methods 0.000 description 10
- 229920001903 high density polyethylene Polymers 0.000 description 9
- 239000004700 high-density polyethylene Substances 0.000 description 9
- 239000004743 Polypropylene Substances 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 7
- -1 polypropylene Polymers 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 229920000098 polyolefin Polymers 0.000 description 5
- 229920001684 low density polyethylene Polymers 0.000 description 4
- 239000004702 low-density polyethylene Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N ethyl ethylene Natural products CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 101800004962 Small cardioactive peptide A Proteins 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Woven Fabrics (AREA)
- Bag Frames (AREA)
- Wrappers (AREA)
- Artificial Filaments (AREA)
Description
【発明の詳細な説明】
本発明は各種資材の梱包、保護、およびクロス
シート、クロス袋用等に供する高剛性クロスに関
するものである。更に詳しくは、ポリオレフイン
系樹脂の一軸延伸テープヤーンを織成してなる合
成樹脂製クロスに関するものである。
従来から、米穀袋、羊毛袋、フレキシブルコン
テナー等の重包装袋またはクロスシート等とし
て、各種資材の梱包、保護用に熱可塑性合成樹脂
の一軸延伸テープヤーンを経糸、緯糸として使用
し織成されたクロスが広く用いられている。
これらのクロスを形成する素材樹脂は、一般的
には結晶性熱可塑性樹脂が用いられ、樹脂として
は、例えば、高密度ポリエチレン、ポリプロピレ
ン等のポリオレフイン系樹脂、あるいはポリアミ
ド系樹脂、ポリエステル系樹脂が挙げられ、とり
わけ汎用性、加工安定性、低廉性等の点でポリオ
レフイン系樹脂が最も多用されている。
従来の高密度ポリエチレンまたはポリプロピレ
ン等のポリオレフイン系樹脂を用いた一軸延伸テ
ープヤーンを織成したクロスにおいては、未だ充
分な剛性と強度を有しているとは言い難い。すな
わち、従来の素材樹脂でクロスの剛性および強度
を向上させるためには、より高繊度の一軸延伸テ
ープヤーンを使用することとなり、それに伴う延
伸時や織成時の縦割れが増加する。
特に延伸−巻き取り−整経−織成からなるクロ
ス製造過程の延伸工程においては、延伸切れが多
発し、また、巻き取り、整経、織成工程において
は脆化的な縦割れが生じる。これらの欠点を改良
すべく種々の方法が提案されている。例えば、従
来の素材樹脂にゴムやエラストマー類を添加する
方法、または無機質粒状物の添加等が試みられて
いるが、低繊度のテープヤーンにおいては、その
縦裂け性にある程度の効果を示すが、高繊度のテ
ープヤーンにおける脆化的な割れに対しては効果
が乏しい。また、従来の低繊度化テープヤーンの
クロスでは剛性が不充分であり、高強度、高剛性
を必要とする重梱包用等のクロスでは2枚のクロ
スを貼り合わせた2層クロスとしなければなら
ず、そのコストも大幅に上昇する。
本発明は上記問題点を解決すべく鋭意検討した
結果なされたものである。
すなわち、本発明は結晶性ポリオレフイン樹脂
96〜75重量%と密度0.89〜0.94g/c.c.のエチレン
−α−オレフイン共重合体樹脂4〜25重量%のオ
レフイン系樹脂組成物からなる少なくとも繊度
2000デニールの一軸延伸テープヤーンを織成し、
所望により該織成面の少なくとも片方に熱可塑性
樹脂層を設けて、該織成体の剛性を少なくとも10
g/cmとした合成樹脂製クロスおよびそのクロス
からなる粉粒体用輸送袋を提供するものである。
本発明において使用する結晶性ポリオレフイン
樹脂とは、密度0.94〜0.97g/c.c.のエチレン単独
重合体またはエチレンを主成分とするα−オレフ
インとの共重合体、あるいは結晶性ポリプロピレ
ン、ポリブテン−1、ポリ−4−メチルペンテン
−1等のα−オレフインの単独重合体、またはそ
れらのα−オレフインを主成分とする共重合体お
よび上記の混合物が挙げられる。上記の結晶性ポ
リオレフインのメルトインデツクスは特に限定さ
れないが、一般的には例えば、高密度ポリエチレ
ンでは0.5〜1.5g/10分、ポリプロピレンでは0.5
〜4g/10分の範囲が好ましい。
一方、密度0.89〜0.94g/c.c.のエチレン−α−
オレフイン共重合体樹脂とは、一般的には、60〜
95モル%のエチレンと5〜40モル%の炭素数3〜
12のα−オレフインからなる共重合体で、例え
ば、エチレン−プロピレン共重合体、エチレン−
ブテン−1共重合体、エチレン−ヘキセン−1共
重合体、エチレン−4−メチルペンテン−1共重
合体、エチレン−オクテン−1共重合体等が挙げ
られるが特に炭素数4〜10のα−オレフインとの
共重合体が好適である。また、これらの共重合体
は、2種以上のα−オレフインと共重合したもの
でもよい。これらの共重合体の製法は、気相法、
スラリー法、溶液法、高圧法等特に限定されない
が、上記共重合体のメルトインデツクスは0.5〜
4.0g/10分の範囲が好ましい。尚、結晶性ポリ
オレフインとエチレン−α−オレフイン共重合体
の混合物のメルトインデツクスは特に限定されな
いが、混合する際には混練不良を起こさないよう
に注意しなければならない。
本発明においては、結晶性ポリオレフインとエ
チレン−α−オレフイン共重合体の混合割合が重
要であり、結晶性ポリオレフイン96〜75重量%に
対して、エチレン−α−オレフイン共重合体4〜
25重量%の割合で混合することが必要である。上
記のエチレン−α−オレフイン共重合体の混合割
合が4重量%未満になると縦割れの多いテープヤ
ーンとなり、一方25重量%を越えるとクロスの剛
性が低下するので好ましくない。
前記のポリオレフイン系樹脂組成物には、その
他一般的に使用される添加剤、例えば、酸化防止
剤、紫外線防止剤、帯電防止剤あるいは着色用顔
料等を添加しても差し支えない。
本発明においては、前記特定のポリオレフイン
系樹脂組成物を用いて形成したテープを一軸延伸
し、巻き取り、整経後、織成して剛性が少なくと
も10g/cmの合成樹脂製クロスとするものであ
る。
前記の組成範囲外の樹脂組成物を用いて本発明
のようにテープヤーンの高繊度化を図る場合に
は、延伸工程において延伸切れを起こし易い。特
に従来から最も汎用されている熱板を摺動させな
がら延伸する方法においては、被延伸体の授受熱
量が不足気味となり延伸切れが著しい。一方、巻
き取り、整経、織成工程においては、テープヤー
ンの縦割れが特に問題となる。高繊度のテープヤ
ーンは低繊度のテープヤーンに比べて、テープの
幅、厚み共に相対的に大きくなる。従つて、本発
明のように厚みが35〜40μを越える高繊度のテー
プヤーンを従来の素材樹脂で形成した場合には、
剛性が過大になり、例えば、テープヤーンの長さ
方向に沿う折畳み等で折り目に沿い、あたかも脆
性破壊の様な縦割れを起す。この割れは短区間に
止まらず、長さ方向に沿つて伝播し、最後にはテ
ープヤーンの切断に至るものである。また僅かな
機械的刺激でも脆性破壊の様な縦割れを起こし、
この様な脆化性割れ現象は、テープヤーンの巻き
取り、整経、および織成工程において頻繁な停止
を招き、特に織成時の織機内でのテープヤーン同
志の擦れによつても停止事故が多発して織成の継
続を不可能にするので、稼動率の大幅な低下を来
たす。
また、従来の素材樹脂からなるテープヤーン
は、前述の様に剛性が大きいので、折りたたむこ
とができず、そのままの形で織り込まざるを得な
い。従つて織り密度を上げることが困難である。
しかしながら、本発明によれば、特定の樹脂組
成物を使用することにより、2000デニール以上の
高繊度のテープヤーンを、上記問題点を生じるこ
となく安定的に供給でき、かつ、テープヤーンを
長さ方向に沿つて折畳んでも縦割れを生じないの
で、2重、3重の多重折り込みが可能となり、織
り密度を高くできるのでクロスの剛性を大幅に上
昇させることができる。
また、本発明のクロスの性能は、前述した様
に、従来の2層袋と同等の剛性を持たせるために
も、少なくとも10g/cmの剛性を有することが肝
要である。この様な高剛性のクロスを得るために
は、例えば、少なくとも2000デニールの高繊度の
テープヤーンを用いて、織り密度を少なくとも11
×11本/インチに織成することにより得られ、か
つ、クロス強度も充分に高めることが可能であ
る。
本発明において、テープヤーンおよびクロスの
製造方法は特に限定されるものでなく、従来周知
の方法を用いれば良い。例えば、延伸工程におい
ては、熱板、熱ロール、熱風炉等が使用でき、こ
れらの中でも特に熱板上を摺動させつつ延伸する
熱板延伸において本発明の効果を充分に発揮させ
ることができる。延伸工程における延伸倍率は、
特に限定されないが、通常は5〜9倍の範囲が好
ましい。
また、織成工程で用いる織機についても、特に
限定はないが、力織機の内緯糸を一旦シヤトルに
巻き替える管巻き工程を含むような織機は好まし
くはない。本発明において使用するテープヤーン
とは、フラツトヤーン、スプリツトヤーン、延伸
テープ、スリツトヤーン等通例のヤーン類を総称
するものである。
本発明は、更に所望により、前記クロス面の少
なくとも片方に熱可塑性樹脂層を設けることによ
り、各種資材の梱包、保護等の機能を飛躍的に向
上せしめることができる。
上記熱可塑性樹脂層の形成は、該クロス体に直
接溶融樹脂をコーテイングする方法、あるいは熱
可塑性樹脂膜を接着剤を介して接着し、または直
接熱融着する方法等の通常の方法でよいが、ラミ
ネートや熱融着あるいは熱処理等を行う場合にお
いては、該クロスの延伸効果が消失しない範囲の
温度で行なわなくてはならない。上記の延伸効果
が消失することはクロス体の強度や剛性等の機械
的強度等を減少せしめるので好ましくない。
本発明の上記積層体は、クロス体の片面又は両
面に、熱可塑性樹脂層を設けてもよく、必要に応
じて更に熱可塑性樹脂層の上にクロス体を貼着し
た多層積層構造物にしてもよい。上記熱可塑性樹
脂はクロス体と同種または異種の樹脂でもよく、
ポリエチレン、ポリプロピレン、エチレン−酢酸
ビニル共重合体等のポリオレフイン系樹脂、ポリ
アミド系樹脂、ポリビニルアルコール系樹脂、ポ
リエステル系樹脂、ポリ塩化ビニル系樹脂等が挙
げられ、特に限定されない。本発明は前述の様に
クロス体面の少なくとも片方に熱可塑性樹脂層を
設けることにより、凸起強度、剛性、引張り強
度、あるいは気密性等が付与されて重梱包材とし
ての機能をより一層向上させることができる。
本願の他の発明は、前記の合成樹脂製クロスを
用いて梱包、保護等の輸送機能を飛躍的に向上せ
しめた粉粒体用輸送袋に関するものである。
更に詳しくは、結晶性ポリオレフイン樹脂96〜
75重量%と密度0.89〜0.94g/c.c.のエチレン−α
−オレフイン共重合体樹脂4〜25重量%のポリオ
レフイン系樹脂組成物からなる少なくとも繊度
2000デニールの一軸延伸テープヤーンを織成し、
所望により該織成面の少なくとも片方に熱可塑性
樹脂層を設け、該織成体の剛性を少なくとも10
g/cmとした合成樹脂製クロスを、角筒または円
筒状に形成し、上部および/または下部に投入口
および/または排出口を設けたことを特徴とする
粉粒体用輸送袋である。
上記の粉粒体用輸送袋(以下「フレキシブルコ
ンテナー」という)の形状、寸法、構造等は特に
制限はなく、例えば、角筒状の袋体の上面に粉粒
体投入口を設けたもの、あるいは上面に投入口
を、下面に排出口を設けたものなど、周知の形状
のものでよく、このフレキシブルコンテナーを本
発明のクロスにより形成することによつて、従来
よりも優れたフレキシブルコンテナーを安価に提
供できるものである。すなわち、本発明のフレキ
シブルコンテナーは、前記の高剛性、高強度のク
ロスを基布として構成されるので、従来のポリエ
チレンテレフタレートあるいはナイロン等を用い
た織布にゴムあるいはポリ塩化ビニル等をコーテ
イングした、いわゆるターポリンからなるランニ
ングタイプのフレキシブルコンテナーと同等の耐
久性を有し、かつそれらよりはるかに安価に製造
することができる。一方、従来の1000〜1500デニ
ール程度のテープヤーンからなるクロスまたはシ
ートをラミネートしたクロス体を2枚あるいは複
数枚貼合わせたものを基布としたフレキシブルコ
ンテナーにおいては、貼合わせによる強度低下や
各クロスの物性のばらつきによる機能低下が起こ
りやすい。また貼合工程の増加やその際のロスの
発生等があり、経済的にも著しく不利であるとい
う欠点を有している。これに比して本発明のクロ
スを用いる場合においては、これらの問題点がな
く、コンテナーの性能もはるかに優れている。
また本発明のフレキシブルコンテナーは、内容
物の種類、単位梱包量、嵩比重、気密性、耐湿
性、強度、剛性等の要求特性、機能に応じて、ク
ロス単体、片面ラミネートクロス、両面ラミネー
トクロスあるいは前記ラミネートクロスの積層構
造体等の基材が選択され、これらを基布としてフ
レキシブルコンテナーを作成し、上記特性、機能
に従つて使い分けることができる。
上述の様に、本発明のフレキシブルコンテナー
は、高強度、高剛性の基布からなるので、耐久
性、耐衝撃性に優れ、かつ大幅な製作工程の簡略
化が図れるので安価に製造できる等多くの利点を
有している。
以下に本発明を実施例および比較例により更に
具体的に説明するが、本発明はこれらの実施例に
限定されるものではない。
実施例および比較例
〔一軸延伸テープヤーンおよびクロスの成形方
法〕
() 一軸延伸テープヤーンの製造
各種樹脂組成物をインフレーシヨン成膜法に
よつて厚さ約130μのフイルムを成形し、この
フイルムを幅18mmのリボン状にスリツトした
後、加熱板上を摺動させながら延伸を行なう熱
板一軸延伸法により、いずれも延伸倍率をテー
プヤーンの引張り強度が約5g/デニールにな
る様に設定し、繊度2500デニールの一軸延伸テ
ープヤーンを作成した。その際のテープヤーン
は幅約6.5mm×厚さ45μ前後となつた。
() クロスの製造
上記テープヤーンを整経工程に供した後、ス
ルザー織機(スルザーブラザース社製)で織り
密度が経12本×緯12本/インチのクロスを作成
した。
〔使用樹脂および充填材〕
() 結晶性ポリオレフイン
(‐1) 高密度ポリエチレン
(密度0.957g/c.c.、メルトインデツクス
1.2g/10分)
(‐2) アイソタクチツクポリプロピレン
(密度0.89g/c.c.、メルトインデツクス
1.2g/10分)
() エチレン−α−オレフイン共重合体
(‐1) エチレン−ブテン−1共重合体
(密度0.920g/c.c.、メルトインデツクス
0.9g/10分、ブテン−1含有量12モル%)
(‐2) エチレン−ヘキセン−1共重合体
(密度0.918g/c.c.、メルトインデツクス
1.0g/10分、ヘキセン−1含有量12モル%)
() エチレン−プロピレン共重合体ゴム
(密度0.89g/c.c.)
() 炭酸カルシウム
(銘柄SCP−A、三共精粉(株)製)
〔試験法および評価方法〕
*1延伸性…20本のテープヤーンを延伸した時の
2時間における切断回数
(評価方法)
×…4回以上
△…2〜3回
〇…1回
◎…0回
*2強度(g/デニール)
テンシロンを用いて、つかみ間隔300mmで引
張速度300mm/minで引張り、破断した値を該
テープヤーンの繊度で除した数値
*3耐割れ性…巻き取り後のテープヤーンの割れ
状態
(評価方法)
×…完全に割れ発生
△…2〜3ケ所/10m長
〇…割れなし/10m長
*4強力(Kg/5cm巾)
クロス試料:7cm幅のクロスを採取し、試料の
両側から各1cm幅ずつ経糸を抜きとり、5cm
幅の試験片とした(ラベルドストリツプ)。
ラミネートクロス試料:ラミネートクロスをそ
のまま5cm幅にカツトし試験片とした(カツ
トストリツプ)。
引張り速度:200mm/min
つかみ間隔:200mm
*5剛性(g/cm)…ハンドロメーターによる幅
1cm、スパン4cmの時の経緯の平均曲げ強度
*6織成効率…クロス10mを織成する時のヤーン
のホツレによる織機運転停止回数
(評価方法)
×…3〜4回/10m
△…1〜2回/10m
〇…なし/10m
実施例1−1〜1−3、比較例1−1〜1〜3
素材樹脂として高密度ポリエチレン(−1)
とエチレン−ブテン−1共重合体(−1)を用
いて前述の様にテープヤーンおよびクロスを形成
し、各種混合比の影響を評価し、その結果を第1
表に示した。
その結果本発明外の比較例1−1の高密度ポリ
エチレン単体および比較例1−2のエチレン−ブ
テン−1共重合体を2重量%ブレンドしたもの
は、延伸性、耐割れ性、および織成効率が劣り、
比較例1−3のエチレン−ブテン−1共重合体30
重量%ブレンドしたものはクロスの剛性が劣る。
実施例1−1から1−3においては、延伸性、耐
割れ性、織成効率その他の試験結果はいずれも良
好であつた。
実施例2および比較例2−1、2−2
素材樹脂として実施例1のエチレン−ブテン−
1共重合体(−1)をエチレン−ヘキセン−1
(−2)に変えた以外は実施例1と同様に行な
い、その結果を第1表に示した。その結果、比較
例2−1および2−2は比較例1−1から1−3
と同様の結果を示した。これに対し、実施例2の
結果はいずれも良好であつた。
比較例3−1〜3−3
素材樹脂として高密度ポリエチレン(−1)
にエチレン−プロピレン共重合体ゴム()また
は炭酸カルシウム()を混合した組成物を用
い、実施例1と同様に行ない、その結果を第1表
に示した。その結果、いずれも耐割れ性、織成効
率または延伸性が劣り、比較例3−1および3−
2においては剛性も劣つている。
実施例3−1〜3−3、比較例3−4
素材樹脂としてアイソタクチツクポリプロピレ
ン(−2)をベースにエチレン−ブテン−1共
重合体(−1)、エチレン−ヘキセン−1共重
合体(−2)およびエチレン−プロピレン共重
合体ゴム()をそれぞれブレンドし、実施例1
と同様に評価し、その結果を第1表に示した。そ
の結果、比較例のエチレン−プロピレン共重合体
ゴムをブレンドしたものは耐割れ性、織成効率が
劣つている。
比較例 4
素材樹脂として高密度ポリエチレン(−1)
とエチレン−ブテン−1共重合体(−1)を用
いて、繊度1500デニールのテープヤーンを作成
し、クロスを形成して該クロスの物性を測定し、
その結果を第1表に示した。その結果、剛性が3
〜4g/cmの劣るクロスであつた。
比較例 5
高密度ポリエチレン(密度0.957g/c.c.、メル
トインデツクス1.2g/10分)からなる繊度1000
デニール、強度5g/デニールのテープヤーンを
織り密度12本×12本/インチで織成した。クロス
と同じ樹脂からなる繊度1500デニール強度5g/
デニールのテープヤーンを織り密度12本×12本/
インチで織成したクロスを厚さ50μの低密度ポリ
エチレン(密度0.925g/c.c.、メルトインデツク
ス8.5g/10分)の押出しラミネート層を介して
貼り合せた後、更に両面に各々厚さ50μの上述の
低密度ポリエチレンのラミネート層を形成した。
このクロスシートの目付量は380g/m2で該クロ
スシートの強力は170Kg/5cm巾、剛性は18g/
cmであつた。
実施例 4
実施例1−2で得られた本発明のクロスの両面
に低密度ポリエチレン(密度0.925g/c.c.、メル
トインデツクス8.5g/10分)を押出しラミネー
トし、クロス両面に厚さ75μの低密度ポリエチレ
ンのラミネート層を形成し、目付量を比較例5と
ほぼ同じ375g/m2としてクロスシートの強度を
測定した結果、強力が185Kg/5cm巾、剛性が30
g/cmと非常に高く、比較例5のクロスシートに
比し、いずれも優れ、本発明の効果が著しいこと
が解る。
【表】DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a highly rigid cloth used for packaging and protecting various materials, cloth sheets, cloth bags, etc. More specifically, the present invention relates to a synthetic resin cloth made by weaving uniaxially stretched tape yarns of polyolefin resin. Traditionally, it has been woven using thermoplastic synthetic resin uniaxially stretched tape yarns as warp and weft for packaging and protecting various materials, such as heavy packaging bags or cloth sheets for rice bags, wool bags, flexible containers, etc. Crosses are widely used. The material resin that forms these cloths is generally a crystalline thermoplastic resin, and examples of the resin include polyolefin resins such as high-density polyethylene and polypropylene, polyamide resins, and polyester resins. Of these, polyolefin resins are most frequently used, especially in terms of versatility, processing stability, and low cost. Conventional cloths woven from uniaxially oriented tape yarns using polyolefin resins such as high-density polyethylene or polypropylene cannot yet be said to have sufficient rigidity and strength. That is, in order to improve the rigidity and strength of cloth using conventional material resins, uniaxially stretched tape yarns with higher fineness must be used, which increases longitudinal cracking during stretching and weaving. In particular, in the stretching step of the cloth manufacturing process consisting of stretching, winding, warping, and weaving, stretching breaks occur frequently, and embrittling vertical cracks occur in the winding, warping, and weaving steps. Various methods have been proposed to improve these drawbacks. For example, attempts have been made to add rubber or elastomers to conventional material resins, or to add inorganic particulates, but these methods have some effect on the longitudinal tearing properties of tape yarns with low fineness. It is less effective against embrittling cracks in high-density tape yarns. In addition, the rigidity of conventional cloth made of tape yarn with low fineness is insufficient, and for cloth for heavy packaging that requires high strength and high rigidity, it is necessary to use a two-layer cloth made by laminating two pieces of cloth together. However, the cost will also increase significantly. The present invention has been made as a result of intensive studies to solve the above problems. That is, the present invention is a crystalline polyolefin resin.
At least fineness consisting of an olefinic resin composition of 96 to 75% by weight and 4 to 25% by weight of an ethylene-α-olefin copolymer resin with a density of 0.89 to 0.94 g/cc
Woven from 2000 denier uniaxially stretched tape yarn,
If desired, a thermoplastic resin layer may be provided on at least one of the woven surfaces to increase the stiffness of the woven body by at least 10
The present invention provides a synthetic resin cloth with a particle size of 1.5 g/cm and a transportation bag for powder and granular materials made of the cloth. The crystalline polyolefin resin used in the present invention is an ethylene homopolymer with a density of 0.94 to 0.97 g/cc, a copolymer with α-olefin containing ethylene as a main component, or crystalline polypropylene, polybutene-1, polyolefin, etc. Examples include homopolymers of α-olefins such as -4-methylpentene-1, copolymers containing α-olefins as a main component, and mixtures of the above. The melt index of the above-mentioned crystalline polyolefin is not particularly limited, but generally, for example, high density polyethylene has a melt index of 0.5 to 1.5 g/10 minutes, and polypropylene has a melt index of 0.5 g/10 min.
A range of ˜4 g/10 minutes is preferred. On the other hand, ethylene-α- with a density of 0.89 to 0.94 g/cc
Olefin copolymer resin is generally 60~
95 mol% ethylene and 5-40 mol% carbon number 3~
A copolymer consisting of 12 α-olefins, such as ethylene-propylene copolymer, ethylene-propylene copolymer,
Examples include butene-1 copolymer, ethylene-hexene-1 copolymer, ethylene-4-methylpentene-1 copolymer, ethylene-octene-1 copolymer, etc., but in particular α- Copolymers with olefins are preferred. Moreover, these copolymers may be copolymerized with two or more types of α-olefins. The production methods for these copolymers include gas phase method,
Slurry method, solution method, high pressure method, etc. are not particularly limited, but the melt index of the above copolymer is from 0.5 to
A range of 4.0 g/10 minutes is preferred. The melt index of the mixture of crystalline polyolefin and ethylene-α-olefin copolymer is not particularly limited, but care must be taken not to cause poor kneading when mixing. In the present invention, the mixing ratio of the crystalline polyolefin and the ethylene-α-olefin copolymer is important;
It is necessary to mix in a proportion of 25% by weight. If the mixing ratio of the above-mentioned ethylene-α-olefin copolymer is less than 4% by weight, the tape yarn will have many longitudinal cracks, while if it exceeds 25% by weight, the stiffness of the cloth will decrease, which is not preferred. Other commonly used additives such as antioxidants, ultraviolet inhibitors, antistatic agents, or coloring pigments may be added to the polyolefin resin composition. In the present invention, a tape formed using the above-mentioned specific polyolefin resin composition is uniaxially stretched, wound up, warped, and woven into a synthetic resin cloth having a rigidity of at least 10 g/cm. When a resin composition outside the above composition range is used to increase the fineness of the tape yarn as in the present invention, stretch breakage is likely to occur during the stretching process. In particular, in the conventionally most widely used method of stretching while sliding a hot plate, the amount of heat transferred and received by the object to be stretched tends to be insufficient, resulting in significant stretching breakage. On the other hand, in the winding, warping, and weaving processes, vertical cracking of the tape yarn becomes a particular problem. A tape yarn with a high fineness has a relatively larger tape width and thickness than a tape yarn with a low fineness. Therefore, when a high fineness tape yarn with a thickness exceeding 35 to 40μ is formed from a conventional material resin as in the present invention,
The rigidity becomes excessive and, for example, when the tape yarn is folded along its length, longitudinal cracks occur along the creases, as if they were brittle fractures. This cracking does not stop at a short section, but propagates along the length, eventually leading to the tape yarn breaking. In addition, even slight mechanical stimulation causes vertical cracking similar to brittle fracture.
Such embrittlement cracking phenomenon causes frequent stoppages in the winding, warping, and weaving processes of the tape yarn, and can also cause stoppage accidents, especially due to the tape yarns rubbing against each other in the loom during weaving. This occurs frequently and makes it impossible to continue weaving, resulting in a significant drop in operating efficiency. Further, as mentioned above, tape yarns made of conventional resin materials have high rigidity, so they cannot be folded and have to be woven as they are. Therefore, it is difficult to increase the weave density. However, according to the present invention, by using a specific resin composition, it is possible to stably supply tape yarn with a high fineness of 2,000 denier or more without causing the above problems, and the tape yarn can be Since vertical cracks do not occur even when folded along the direction, double or triple folding is possible, and the weaving density can be increased, so the rigidity of the cloth can be significantly increased. Furthermore, as mentioned above, it is important for the performance of the cloth of the present invention to have a rigidity of at least 10 g/cm in order to have the same rigidity as a conventional two-layer bag. In order to obtain such a highly rigid cloth, for example, a tape yarn with a high fineness of at least 2000 denier and a weave density of at least 11
This can be obtained by weaving 11 pieces/inch, and it is also possible to sufficiently increase the cross strength. In the present invention, the method for producing the tape yarn and cloth is not particularly limited, and any conventionally known method may be used. For example, in the stretching process, a hot plate, a hot roll, a hot air oven, etc. can be used, and among these, the effects of the present invention can be fully exhibited especially in hot plate stretching in which the material is stretched while sliding on a hot plate. . The stretching ratio in the stretching process is
Although not particularly limited, a range of 5 to 9 times is usually preferred. Further, the loom used in the weaving process is not particularly limited, but a loom that includes a tube winding process in which the inner weft of the power loom is once wound onto a shuttle is not preferred. The tape yarn used in the present invention is a general term for common yarns such as flat yarn, split yarn, drawn tape, and slit yarn. In the present invention, if desired, by providing a thermoplastic resin layer on at least one of the cross surfaces, the functions of packaging and protecting various materials can be dramatically improved. The thermoplastic resin layer may be formed by a conventional method such as directly coating the cloth body with a molten resin, or bonding a thermoplastic resin film with an adhesive or directly heat-sealing it. When performing lamination, heat fusion, heat treatment, etc., the temperature must be within a range where the stretching effect of the cloth is not lost. Loss of the above-mentioned stretching effect is undesirable because it reduces mechanical strength such as strength and rigidity of the cloth body. The above-mentioned laminate of the present invention may be provided with a thermoplastic resin layer on one or both sides of the cloth body, and if necessary, can be made into a multilayer laminate structure in which the cloth body is further adhered on the thermoplastic resin layer. Good too. The above-mentioned thermoplastic resin may be the same type of resin as the cloth body or a different type of resin,
Examples include polyolefin resins such as polyethylene, polypropylene, and ethylene-vinyl acetate copolymers, polyamide resins, polyvinyl alcohol resins, polyester resins, and polyvinyl chloride resins, but are not particularly limited. As described above, the present invention provides a thermoplastic resin layer on at least one of the cloth body surfaces, thereby imparting convex strength, rigidity, tensile strength, airtightness, etc., and further improving its function as a heavy-duty packaging material. be able to. Another invention of the present application relates to a transportation bag for powder and granular materials that uses the synthetic resin cloth described above to dramatically improve transportation functions such as packaging and protection. For more details, see Crystalline Polyolefin Resin 96~
Ethylene-alpha with 75% by weight and density 0.89-0.94g/cc
- At least fineness consisting of a polyolefin resin composition containing 4 to 25% by weight of an olefin copolymer resin
Woven from 2000 denier uniaxially stretched tape yarn,
If desired, a thermoplastic resin layer is provided on at least one of the woven surfaces to increase the stiffness of the woven body to at least 10
This is a transportation bag for powder and granular materials, characterized in that a synthetic resin cloth having a weight of 1.5 g/cm is formed into a rectangular or cylindrical shape, and an input port and/or discharge port are provided at the upper and/or lower portions. There are no particular restrictions on the shape, dimensions, structure, etc. of the above-mentioned transportation bag for powder and granular materials (hereinafter referred to as "flexible container"). Alternatively, it may be of a well-known shape, such as one with an input port on the top surface and a discharge port on the bottom surface.By forming this flexible container with the cloth of the present invention, a flexible container that is superior to conventional ones can be produced at a lower cost. It can be provided to That is, since the flexible container of the present invention is constructed using the above-mentioned high-rigidity, high-strength cloth as a base fabric, it can be constructed by coating a conventional woven fabric using polyethylene terephthalate, nylon, etc. with rubber, polyvinyl chloride, etc. It has the same durability as a running type flexible container made of so-called tarpaulin, and can be manufactured at a much lower cost. On the other hand, in conventional flexible containers whose base fabric is made by laminating two or more cloths made of cloth or sheets made of tape yarns of about 1000 to 1500 denier, the strength decreases due to lamination, and each Functional deterioration is likely to occur due to variations in physical properties. Furthermore, there is an increase in the number of bonding steps and the generation of losses during the bonding process, which is disadvantageous in that it is extremely disadvantageous economically. In comparison, when using the cloth of the present invention, these problems are not present and the performance of the container is far superior. In addition, the flexible container of the present invention can be made of single cloth, single-sided laminated cloth, double-sided laminated cloth, or A base material such as the laminated structure of the laminate cloth is selected, a flexible container is created using these as the base fabric, and it is possible to use the flexible container according to the above-mentioned characteristics and functions. As mentioned above, the flexible container of the present invention is made of a base fabric with high strength and high rigidity, so it has excellent durability and impact resistance, and the manufacturing process can be greatly simplified, so it can be manufactured at a low cost, etc. It has the following advantages. EXAMPLES The present invention will be explained in more detail below using Examples and Comparative Examples, but the present invention is not limited to these Examples. Examples and Comparative Examples [Method for forming uniaxially oriented tape yarn and cloth] () Manufacture of uniaxially oriented tape yarn Various resin compositions were formed into a film with a thickness of about 130μ by an inflation film forming method. After slitting the tape yarn into ribbons with a width of 18 mm, the tape yarn was stretched using a hot plate uniaxial stretching method in which the ribbon was stretched while sliding it on a hot plate. , a uniaxially drawn tape yarn with a fineness of 2500 denier was prepared. The tape yarn at that time was about 6.5 mm wide x 45 μm thick. () Manufacture of Cloth After subjecting the above tape yarn to a warping process, a cloth with a weaving density of 12 warps x 12 wefts/inch was produced using a Sulzer loom (manufactured by Sulzer Brothers). [Resin and filler used] () Crystalline polyolefin (-1) High density polyethylene (density 0.957g/cc, melt index
1.2g/10min) (-2) Isotactic polypropylene (density 0.89g/cc, melt index
1.2g/10min) () Ethylene-α-olefin copolymer (-1) Ethylene-butene-1 copolymer (density 0.920g/cc, melt index
0.9 g/10 min, butene-1 content 12 mol%) (-2) Ethylene-hexene-1 copolymer (density 0.918 g/cc, melt index
1.0g/10 minutes, hexene-1 content 12 mol%) () Ethylene-propylene copolymer rubber (density 0.89g/cc) () Calcium carbonate (brand SCP-A, manufactured by Sankyo Seifun Co., Ltd.) [ Test method and evaluation method] *1 Stretchability...Number of cuts in 2 hours when 20 tape yarns are stretched (Evaluation method) ×...4 times or more △...2-3 times 〇...1 time ◎...0 times* 2 Strength (g/denier) Using Tensilon, it is pulled at a gripping interval of 300 mm and a pulling speed of 300 mm/min, and the value at which it breaks is divided by the fineness of the tape yarn *3 Cracking resistance...The value of the tape yarn after winding. Crack condition (evaluation method) ×... Completely cracked △... 2 to 3 places / 10 m length 〇... No crack / 10 m length * 4 strong (Kg / 5 cm width) Cloth sample: Take a 7 cm wide cloth and Remove warp threads 1cm wide from both sides, and make 5cm
It was used as a test piece of width (labeled strip). Laminated cloth sample: The laminated cloth was cut into a 5 cm wide test piece (cut strip). Tensile speed: 200mm/min Grasp interval: 200mm *5 Rigidity (g/cm)...Average bending strength measured by handrometer when width is 1cm and span is 4cm *6 Weaving efficiency...When weaving 10m of cloth Number of loom operation stoppages due to yarn fraying (Evaluation method) ×...3 to 4 times/10m △...1 to 2 times/10m 〇...None/10m Examples 1-1 to 1-3, Comparative Examples 1-1 to 1 ~3 High density polyethylene (-1) as material resin
and ethylene-butene-1 copolymer (-1) were used to form tape yarns and cloths as described above, and the effects of various mixing ratios were evaluated.
Shown in the table. As a result, a blend of 2% by weight of the high-density polyethylene of Comparative Example 1-1 outside the present invention and the ethylene-butene-1 copolymer of Comparative Example 1-2 had excellent stretchability, cracking resistance, and weaving properties. less efficient,
Ethylene-butene-1 copolymer 30 of Comparative Example 1-3
When the weight percentage is blended, the stiffness of the cloth is inferior.
In Examples 1-1 to 1-3, test results such as stretchability, cracking resistance, weaving efficiency, and others were all good. Example 2 and Comparative Examples 2-1, 2-2 Ethylene-butene- of Example 1 as the material resin
1 copolymer (-1) with ethylene-hexene-1
The same procedure as in Example 1 was carried out except that (-2) was changed, and the results are shown in Table 1. As a result, Comparative Examples 2-1 and 2-2 were compared to Comparative Examples 1-1 to 1-3.
showed similar results. In contrast, the results of Example 2 were all good. Comparative Examples 3-1 to 3-3 High density polyethylene (-1) as material resin
The test was carried out in the same manner as in Example 1 using a composition in which ethylene-propylene copolymer rubber (2) or calcium carbonate (2) was mixed, and the results are shown in Table 1. As a result, cracking resistance, weaving efficiency, or stretchability were poor in both Comparative Examples 3-1 and 3-
In No. 2, the rigidity is also inferior. Examples 3-1 to 3-3, Comparative Example 3-4 Ethylene-butene-1 copolymer (-1) and ethylene-hexene-1 copolymer based on isotactic polypropylene (-2) as the material resin (-2) and ethylene-propylene copolymer rubber () were blended, respectively, and Example 1
Evaluations were made in the same manner as above, and the results are shown in Table 1. As a result, the comparative example, which was a blend of ethylene-propylene copolymer rubber, was inferior in cracking resistance and weaving efficiency. Comparative example 4 High density polyethylene (-1) as material resin
and ethylene-butene-1 copolymer (-1) to create a tape yarn with a fineness of 1500 denier, form a cloth, and measure the physical properties of the cloth,
The results are shown in Table 1. As a result, the stiffness is 3
It was an inferior cloth of ~4 g/cm. Comparative Example 5 Fineness 1000 made of high-density polyethylene (density 0.957 g/cc, melt index 1.2 g/10 minutes)
Tape yarn with a denier and a strength of 5 g/denier was woven at a weave density of 12 threads x 12 threads/inch. Made of the same resin as the cloth, fineness 1500 denier strength 5g/
Weave denier tape yarn at a density of 12 x 12/
After laminating the 50μ thick woven cloth through an extruded laminate layer of low density polyethylene (density 0.925g/cc, melt index 8.5g/10 minutes), the above-mentioned 50μ thick cloth was attached on both sides. A laminate layer of low density polyethylene was formed.
The basis weight of this cloth sheet is 380g/ m2 , the strength of this cloth sheet is 170Kg/5cm width, and the rigidity is 18g/m2.
It was cm. Example 4 Low-density polyethylene (density 0.925 g/cc, melt index 8.5 g/10 minutes) was extruded and laminated on both sides of the cloth of the present invention obtained in Example 1-2, and a 75μ thick layer was laminated on both sides of the cloth. The strength of the cloth sheet was measured by forming a laminate layer of low-density polyethylene and setting the basis weight to 375g/ m2 , which is almost the same as in Comparative Example 5.The strength was 185Kg/5cm width, and the rigidity was 30.
g/cm, which is very high, and is superior to the cloth sheet of Comparative Example 5, indicating that the effects of the present invention are remarkable. 【table】
Claims (1)
度0.89〜0.94g/c.c.のエチレン−α−オレフイン
共重合体樹脂4〜25重量%のポリオレフイン系樹
脂組成物からなる少なくとも繊度2000デニールの
一軸延伸テープヤーンを織成してなり、少なくと
も10g/cmの剛性を有する合成樹脂製クロス。 2 前記合成樹脂製クロスの織成面の少なくとも
片方に熱可塑性樹脂層を付与したことを特徴とす
る特許請求の範囲第1項に記載の合成樹脂製クロ
ス。 3 前記一軸延伸テープヤーンが長さ方向に沿つ
て少なくとも2層以上に折り込まれた状態で織成
されていることを特徴とする特許請求の範囲第1
項または第2項に記載の合成樹脂製クロス。 4 前記エチレン−α−オレフイン共重合体がエ
チレン−ブテン−1共重合体であることを特徴と
する特許請求の範囲第1項から第3項のいずれか
に記載の合成樹脂製クロス。 5 前記エチレン−α−オレフイン共重合体がエ
チレン−ヘキセン−1共重合体であることを特徴
とする特許請求の範囲第1項から第3項のいずれ
かに記載の合成樹脂製クロス。 6 結晶性ポリオレフイン樹脂96〜75重量%と密
度0.89〜0.94g/c.c.のエチレン−α−オレフイン
共重合体樹脂4〜25重量%のポリオレフイン系樹
脂組成物からなる少なくとも繊度2000デニールの
一軸延伸テープヤーンを織成し、該織成体の剛性
を少なくとも10g/cmとした合成樹脂製クロスを
角筒または円筒状に形成し、上部および/または
下部に投入口および/または排出口を設けたこと
を特徴とする粉粒体用輸送袋。 7 前記合成樹脂製クロスの織成面の少なくとも
片方に熱可塑性樹脂層を付与したことを特徴とす
る特許請求の範囲第6項に記載の粉粒体用輸送
袋。[Scope of Claims] 1. A polyolefin resin composition having a fineness of at least 2000 and comprising 96 to 75% by weight of a crystalline polyolefin resin and 4 to 25% by weight of an ethylene-α-olefin copolymer resin having a density of 0.89 to 0.94 g/cc. A synthetic resin cloth woven from denier uniaxially stretched tape yarns and having a stiffness of at least 10 g/cm. 2. The synthetic resin cloth according to claim 1, wherein a thermoplastic resin layer is provided on at least one of the woven surfaces of the synthetic resin cloth. 3. Claim 1, characterized in that the uniaxially stretched tape yarn is woven in a state in which it is folded into at least two layers along its length.
Synthetic resin cloth according to item 1 or 2. 4. The synthetic resin cloth according to any one of claims 1 to 3, wherein the ethylene-α-olefin copolymer is an ethylene-butene-1 copolymer. 5. The synthetic resin cloth according to any one of claims 1 to 3, wherein the ethylene-α-olefin copolymer is an ethylene-hexene-1 copolymer. 6 Uniaxially oriented tape yarn with a fineness of at least 2000 denier, consisting of a polyolefin resin composition containing 96 to 75% by weight of a crystalline polyolefin resin and 4 to 25% by weight of an ethylene-α-olefin copolymer resin having a density of 0.89 to 0.94 g/cc. A synthetic resin cloth woven with a stiffness of at least 10 g/cm is formed into a rectangular or cylindrical shape, and an input port and/or discharge port are provided at the upper and/or lower portions. Transport bag for powder and granular materials. 7. The transportation bag for powder or granular material according to claim 6, characterized in that a thermoplastic resin layer is provided on at least one of the woven surfaces of the synthetic resin cloth.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57141340A JPS5930934A (en) | 1982-08-14 | 1982-08-14 | Synthetic resin cloth and transport bag for particle comprising same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57141340A JPS5930934A (en) | 1982-08-14 | 1982-08-14 | Synthetic resin cloth and transport bag for particle comprising same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5930934A JPS5930934A (en) | 1984-02-18 |
JPH0232384B2 true JPH0232384B2 (en) | 1990-07-19 |
Family
ID=15289676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57141340A Granted JPS5930934A (en) | 1982-08-14 | 1982-08-14 | Synthetic resin cloth and transport bag for particle comprising same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5930934A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63159515A (en) * | 1986-09-19 | 1988-07-02 | ザ ダウ ケミカル カンパニー | Two-component polypropylene/polyethylene fiber |
JPH0740109Y2 (en) * | 1986-11-11 | 1995-09-13 | 三洋電機株式会社 | Synthetic resin power transmission parts |
JP2501670B2 (en) * | 1991-02-28 | 1996-05-29 | 平成ポリマー株式会社 | Multi-layer stretch tape, woven fabric for flexible container and processed fabric for manufacturing flexible container |
CN112368434B (en) * | 2018-07-26 | 2023-05-09 | 陶氏环球技术有限责任公司 | Heat-shrinkable knit raffle fabric and method of using such fabric |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52135342A (en) * | 1977-03-28 | 1977-11-12 | Toyobo Co Ltd | Adhesive tapes having improved tear properties in cross direction |
JPS52138579A (en) * | 1976-05-10 | 1977-11-18 | Mitsui Toatsu Chem Inc | Polyolefin laminates and their preparation |
JPS58208435A (en) * | 1982-05-31 | 1983-12-05 | 昭和電工株式会社 | Packing cloth |
JPS5915065A (en) * | 1982-07-02 | 1984-01-26 | 昭和電工株式会社 | Cloth for packing |
-
1982
- 1982-08-14 JP JP57141340A patent/JPS5930934A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52138579A (en) * | 1976-05-10 | 1977-11-18 | Mitsui Toatsu Chem Inc | Polyolefin laminates and their preparation |
JPS52135342A (en) * | 1977-03-28 | 1977-11-12 | Toyobo Co Ltd | Adhesive tapes having improved tear properties in cross direction |
JPS58208435A (en) * | 1982-05-31 | 1983-12-05 | 昭和電工株式会社 | Packing cloth |
JPS5915065A (en) * | 1982-07-02 | 1984-01-26 | 昭和電工株式会社 | Cloth for packing |
Also Published As
Publication number | Publication date |
---|---|
JPS5930934A (en) | 1984-02-18 |
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