JPH02265928A - Uniaxially oriented polypropylene band - Google Patents
Uniaxially oriented polypropylene bandInfo
- Publication number
- JPH02265928A JPH02265928A JP8850789A JP8850789A JPH02265928A JP H02265928 A JPH02265928 A JP H02265928A JP 8850789 A JP8850789 A JP 8850789A JP 8850789 A JP8850789 A JP 8850789A JP H02265928 A JPH02265928 A JP H02265928A
- Authority
- JP
- Japan
- Prior art keywords
- band
- transparency
- crystalline
- stretching
- examples
- 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.)
- Pending
Links
- 239000005026 oriented polypropylene Substances 0.000 title 1
- 229920001155 polypropylene Polymers 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 20
- 239000003208 petroleum Substances 0.000 claims abstract description 16
- 239000000155 melt Substances 0.000 claims abstract description 6
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 5
- 125000002723 alicyclic group Chemical group 0.000 claims abstract description 4
- 239000004743 Polypropylene Substances 0.000 claims description 32
- -1 polypropylene Polymers 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 abstract description 8
- 239000011342 resin composition Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 10
- 238000001125 extrusion Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 235000007586 terpenes Nutrition 0.000 description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005984 hydrogenation reaction Methods 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000002667 nucleating agent Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 150000003505 terpenes Chemical class 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000539 dimer Substances 0.000 description 2
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- ABIFUJNCKIMWRZ-JGVFFNPUSA-N (2r,4s)-4-(3-phosphonopropyl)piperidine-2-carboxylic acid Chemical compound OC(=O)[C@H]1C[C@@H](CCCP(O)(O)=O)CCN1 ABIFUJNCKIMWRZ-JGVFFNPUSA-N 0.000 description 1
- GQVMHMFBVWSSPF-SOYUKNQTSA-N (4E,6E)-2,6-dimethylocta-2,4,6-triene Chemical compound C\C=C(/C)\C=C\C=C(C)C GQVMHMFBVWSSPF-SOYUKNQTSA-N 0.000 description 1
- DDEWZZFCOPRPHZ-UHFFFAOYSA-N 2,4-ditert-butyl-3-[(2,6-ditert-butyl-3-hydroxyphenyl)methyl]phenol Chemical compound CC(C)(C)C1=CC=C(O)C(C(C)(C)C)=C1CC1=C(C(C)(C)C)C=CC(O)=C1C(C)(C)C DDEWZZFCOPRPHZ-UHFFFAOYSA-N 0.000 description 1
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- 241000156978 Erebia Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000002015 acyclic group Chemical group 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000002619 bicyclic group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229930006737 car-3-ene Natural products 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- BQOFWKZOCNGFEC-UHFFFAOYSA-N carene Chemical compound C1C(C)=CCC2C(C)(C)C12 BQOFWKZOCNGFEC-UHFFFAOYSA-N 0.000 description 1
- 229930007796 carene Natural products 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- GQVMHMFBVWSSPF-UHFFFAOYSA-N cis-alloocimene Natural products CC=C(C)C=CC=C(C)C GQVMHMFBVWSSPF-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003247 decreasing effect Effects 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
- 239000003337 fertilizer Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 1
- 125000002950 monocyclic group Chemical group 0.000 description 1
- 229930003658 monoterpene Natural products 0.000 description 1
- 235000002577 monoterpenes Nutrition 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229920001384 propylene homopolymer Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
- IHPKGUQCSIINRJ-UHFFFAOYSA-N β-ocimene Natural products CC(C)=CCC=C(C)C=C IHPKGUQCSIINRJ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
[a業上の利用分野]
本発明は、透明性に優れたポリプロピレン一軸延伸バン
ドに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a polypropylene uniaxially stretched band with excellent transparency.
[従来技術]
従来よりポリプロピレン(以下PPと称することがある
)バンドは強度、耐薬品性等の物性に優ね、しかもポリ
エステル、ナイロン等の熱可塑性樹脂よりなるバンドと
比較して安価であることから、ハウス押さえ用、穀物、
肥料等の農薬用から、郵便物、小包み、書籍、証券類等
の軽梱包用、またはパレット建材、鋼板、機祇頚等の瓜
ノ[Il包までの幅広い用途に於いて使用されている。[Prior art] Polypropylene (hereinafter sometimes referred to as PP) bands have traditionally had superior physical properties such as strength and chemical resistance, and are also cheaper than bands made of thermoplastic resins such as polyester and nylon. From, for house holding, grain,
It is used in a wide range of applications, from pesticides such as fertilizers to light packaging for mail, parcels, books, securities, etc., and for packaging materials such as pallet building materials, steel plates, and machine necks. .
バンドの寸法形状等についでは幅5〜50mmおよび厚
み02〜2■の範囲で手結び用、自動梱包機用などによ
り結束梱包に用いられている。Regarding the size and shape of the band, the band ranges from 5 to 50 mm in width and 0.2 to 2 mm in thickness, and is used for bundling by hand, automatic packing machine, etc.
しかしながら、従来のPPバンドは、ポリエステル、ナ
イロン等のバンドに比べ透明性が劣るため、バンドで結
束、梱包した部分の梱包物の透明性に欠ける欠点がある
。すなわちPPバンドを用いて書籍、証券類、新聞紙等
を複数冊まとめて梱包する場合、PPバンドが文字や数
字、図形等の上にかかったために判読できない不都合が
生じる。この判読のためにバンドをずらしいわゆる覗く
ことととなるが、バンドをずらしたことで梱包による引
締め力が緩み梱包物が崩れてしまう恐れがある。However, conventional PP bands have inferior transparency compared to bands made of polyester, nylon, etc., and therefore have the disadvantage that the parts bound and packed with the bands lack transparency. That is, when a plurality of books, securities, newspapers, etc. are packaged together using a PP band, there is a problem that the PP band covers letters, numbers, figures, etc., making them difficult to read. In order to make this determination, the band must be shifted and the package must be looked into. However, shifting the band may loosen the tightening force of the packaging and cause the packaged item to collapse.
従って、梱包物の文字や数字、図形等が上にかかったバ
ンドを透視し判読できるよう透明性の高いPPバンドが
要求されている。Therefore, a highly transparent PP band is required so that characters, numbers, figures, etc. of the package can be seen through the band and read.
PPバンドの透明性を向上する方法としては、PP樹脂
に造核剤を添加する方法や溶融押出加工時に低温で急冷
する方法などが提案されているもののいずれの場合もバ
ンドの透明性向上効果は少なく、特に造核剤を用いる場
合に於いては延伸加工時にボイドによる白化現象が発生
し易くなり、これを抑制するため延伸倍率を低下しなけ
ればならないことによりバンドの強化度低下となる。As methods for improving the transparency of PP bands, methods such as adding a nucleating agent to the PP resin and quenching at low temperatures during melt extrusion processing have been proposed, but in both cases, the effect of improving the transparency of the band is Especially when a nucleating agent is used, whitening due to voids tends to occur during stretching, and in order to suppress this, the stretching ratio must be lowered, resulting in a decrease in the strength of the band.
また低温で急冷する方法の場合、溶融押出されたものた
とえばシート等は表面の急冷に比べ内部は徐冷となるた
め、表層部分と内層部分との結晶化が不均一なものとな
り、延伸加工時に於いて延伸斑を生じ易くなり生産性の
低下もしくは強度低下となる等積々の問題点がある。In addition, in the case of the method of rapid cooling at low temperatures, the interior of the melt-extruded product, such as a sheet, is cooled slowly compared to the rapid cooling of the surface, so the crystallization between the surface layer and the inner layer becomes uneven, and during the stretching process. There are a number of problems in this process, including the tendency to develop unevenness in stretching, resulting in decreased productivity and strength.
[本発明が解決すべき問題点]
木発明者等は透明性に優れたPPバンドを得るため鋭意
検討した結果、PP樹脂に特定の石油樹脂を混合せしめ
てなる組成物により透明性が向上することを見出し本発
明を完成した。[Problems to be Solved by the Present Invention] As a result of intensive studies to obtain a PP band with excellent transparency, the inventors discovered that transparency can be improved by a composition made by mixing a specific petroleum resin with a PP resin. They discovered this and completed the present invention.
本発明はかかる従来技術で得ることのできない問題点を
解消し、梱包物の文字等を透視するのに好適な透明性に
優れたPP一軸延伸バンドを提供することを目的とする
。It is an object of the present invention to solve the problems that cannot be obtained with the prior art and to provide a PP uniaxially stretched band with excellent transparency suitable for seeing through the characters, etc. of a package.
c問題点を解決する手段〕 本発明は下記+1)の構成を有する。c.Means to solve the problem] The present invention has the following configuration +1).
(1)プロピレン重合体100重量部に対し脂肪族また
は脂環族系石油樹脂5〜20重量部を配合してなりメル
ト7o−レート(MFR)が0.5〜5 g/l[1分
の結晶性ポリプロピレン樹脂組成物を押出成形ののち一
軸延伸してなることを特徴とするポリプロピレン一軸延
伸バンドである。(1) 5 to 20 parts by weight of aliphatic or alicyclic petroleum resin is blended to 100 parts by weight of propylene polymer, and the melt 7o-rate (MFR) is 0.5 to 5 g/l [1 minute This is a polypropylene uniaxially stretched band characterized by being formed by extruding a crystalline polypropylene resin composition and then uniaxially stretching it.
本発明に用いることのできるPP樹脂組成物としてはプ
ロピレン重合体と石油樹脂の配合物からなり、そのメル
トフローレート(MFR)がθ、5〜5g/10分であ
ることが必要である。The PP resin composition that can be used in the present invention is composed of a mixture of propylene polymer and petroleum resin, and must have a melt flow rate (MFR) of 5 to 5 g/10 minutes.
プロピレン重合体としては、遷移金属化合物および有機
金属化合物からなる触媒を用いてプロピレンを重合せし
めてなる結晶性プロピレン単独重合体が好ましいが、プ
ロピレンとエチレン、プロピレンどブテン−1、または
ヘキセン−1,4−メチルペンテン−1、オクテン−!
などのα−オレフィンを共重合することによって得られ
た共重合体も使用することが°できる。The propylene polymer is preferably a crystalline propylene homopolymer obtained by polymerizing propylene using a catalyst consisting of a transition metal compound and an organometallic compound. 4-Methylpentene-1, octene-!
Copolymers obtained by copolymerizing α-olefins such as the following can also be used.
重合方法には特に限定はなくたとえば気相法、スラリー
法、溶液法などのいずれかまたはこれらの組合わせのい
ずれの方法を用いても製造することができる。また、必
要に応じて通常PP%品に利用される各f!添加剤たと
えば熱安定剤、酸化防止剤、紫外線吸収剤、滑剤などを
本発明の目的を損なわない程度において使用できる。There is no particular limitation on the polymerization method, and the polymerization can be produced using any method such as a gas phase method, a slurry method, a solution method, or a combination thereof. In addition, each f! which is normally used for PP% products as needed! Additives such as heat stabilizers, antioxidants, ultraviolet absorbers, lubricants, etc. may be used to the extent that they do not impair the purpose of the present invention.
さらに、本発明で用いられる石油樹脂としては水素化し
た炭化水素重合体であり50より低い沃素価、約70℃
を越える環球軟化点及び約500以上の平均分子量(ラ
スト法)を有するものである。Furthermore, the petroleum resin used in the present invention is a hydrogenated hydrocarbon polymer, has an iodine value lower than 50, and has an iodine value of about 70°C.
It has a ring and ball softening point of more than 500 and an average molecular weight (Last method) of about 500 or more.
このような材料には、英国特許1,024,718号に
記載されているような公知の工業的に利用できる材料を
含む石油のディープクラッキングから導かれる混合した
不飽和単量体たとえば脂肪族炭化水素、ビニル芳香族炭
化水素、シクロペンタジェン等の接触重合によって得ら
れた重合体及びアロオシメン、カレン、ジペンテン、テ
ルピノネン等または留分及び各種の他のテルペンを含む
非環式、単環式及び二環式モノテルペン及びその混合物
のようなテルペン炭化水素の重合及び/または共重合を
行い、続いて加圧下で水素化することによって得られる
二量体並びにより高次の重合体が含まれる。Such materials include mixed unsaturated monomers derived from deep cracking of petroleum, including known industrially available materials such as those described in British Patent No. 1,024,718, such as aliphatic carbonization. Polymers obtained by catalytic polymerization of hydrogen, vinyl aromatic hydrocarbons, cyclopentadiene, etc. and acyclic, monocyclic and dicyclic compounds containing alloocimene, carene, dipentene, terpinonene, etc. or fractions and various other terpenes. Included are dimers and higher order polymers obtained by polymerizing and/or copolymerizing terpene hydrocarbons, such as cyclic monoterpenes and mixtures thereof, followed by hydrogenation under pressure.
石油製品、テルペンまたはテルペン混合物の重合は、溶
媒または無溶媒に硫酸、燐酸、塩化亜鉛または塩化アル
ミニウム等の両性金属塩化物などを用いて公知の方法に
より行うことができる。この重合はすべての炭化水素単
量体が最少限の二量体生成で反応する結果を生ずる条件
下で行うのが望ましい。Polymerization of petroleum products, terpenes or terpene mixtures can be carried out by known methods using sulfuric acid, phosphoric acid, amphoteric metal chlorides such as zinc chloride or aluminum chloride, etc. in a solvent or without a solvent. This polymerization is desirably conducted under conditions that result in all hydrocarbon monomers reacting with minimal dimer formation.
この炭化水素重合体の水素化はニッケル、コバルトまた
はジルコニア等の触媒を用いて行うことができる。この
水素化は、メチルシクロヘキサン、トルエン、p−メタ
ン、水素化したテルベンニ単量体−三量体等の溶媒の存
在下で500〜10.Co。Hydrogenation of this hydrocarbon polymer can be carried out using a catalyst such as nickel, cobalt or zirconia. This hydrogenation is carried out in the presence of a solvent such as methylcyclohexane, toluene, p-methane, hydrogenated terbennimonomer-trimer, etc. for 50-10. Co.
pisの範囲の圧力及び150〜300℃の範囲の温度
を用いて行うことが好ましい。Preferably, it is carried out using a pressure in the range of 1.0 pis and a temperature in the range of 150 to 300°C.
公知の方法によって調製され、約500(ラスト法)及
びそれ以上の平均分子量、約50以下の沃素価、約70
℃以上の環球軟化点及びポリプロピレンとの適合性を有
する水素化した炭化水素重合体をすべて使用できる。Prepared by known methods, average molecular weight of about 500 (last method) and above, iodine number of about 50 or less, about 70
Any hydrogenated hydrocarbon polymer having a ring and ball softening point above 0.degree. C. and compatibility with polypropylene can be used.
たとえば特開昭51−91,955号公報に示される分
子量SOO〜5,000 、軟化点50〜!50℃の脂
肪族または脂環族系石油樹脂があげられる。For example, the molecular weight SOO~5,000 and the softening point 50~ shown in JP-A No. 51-91,955! Examples include aliphatic or alicyclic petroleum resins at 50°C.
本発明における石油樹脂の配合割合はプロピレン重合体
100重量部に対し、5〜20重量部とすることが必要
である0石油樹脂が5重量部より少ない場合透明性の向
上効果は僅かであり、20重丘部を超える場合はバンド
の強度低下が太きく3g/d以上の強度保持が困難であ
り増量による透明性の向上も限度に達し好ましくない。The blending ratio of the petroleum resin in the present invention is required to be 5 to 20 parts by weight per 100 parts by weight of the propylene polymer. If the petroleum resin is less than 5 parts by weight, the effect of improving transparency is slight. When the number exceeds 20 ridges, the strength of the band decreases so much that it is difficult to maintain a strength of 3 g/d or more, and the improvement in transparency by increasing the amount reaches its limit, which is not preferable.
従って該配合量はバンドの強度維持および透明性の向上
効果を兼ね特に好ましくは10〜151i量部である。Therefore, the blending amount is particularly preferably 10 to 151 parts in order to maintain the strength of the band and improve transparency.
本発明で使用するプロピレン重合体と石油樹脂からなる
結晶性PPPA脂組成物は、溶融押出成形法により、結
束、梱包用等のバンドの製造原料とする観点からメルト
フローレート(Jrs K 721.0−1978
試験条件230℃、2.1.6kg 以下VFRと称
する。)0.5〜5g710分であることが必要である
。The crystalline PPPA resin composition composed of a propylene polymer and a petroleum resin used in the present invention is produced by melt extrusion molding and has a melt flow rate (Jrs K 721.0) from the viewpoint of being used as a raw material for manufacturing bands for binding, packaging, etc. -1978
Test conditions: 230°C, 2.1.6 kg, hereinafter referred to as VFR. )0.5-5g710min.
MFRはバンド強度を引出す上での指標となるものでM
FRがo、sH/io分より低い場合溶融押出時の溶融
粘度が高くサージングと呼ばれる押出変動やダイ出口で
のメルトフラクチャーと呼ばれる樹脂の流線破壊を起こ
しやすく、押出成形により得られた未延伸シートの表面
の荒れにより透明性が低下するため好ましくない。MFR is an index for drawing out the band strength.
If the FR is lower than o, sH/io, the melt viscosity during melt extrusion is high, which tends to cause extrusion fluctuations called surging and streamline breakage of the resin called melt fracture at the die exit, and the unstretched product obtained by extrusion molding This is not preferable because the roughness of the surface of the sheet reduces transparency.
また、MFRが5 g710分を超えると、バンドとし
て38〜5g/10分のものを使用した場合と同等の強
度維持ができない、透明性の向上効果および強度維持の
ためVFRは0.8〜3g/Io分がより好ましいお
また、プロピレン重合体と石油樹脂の配合の方法として
は通常使用される混合機、たとえばドラムブレンダー、
■ブレンダー、ヘンシェルミキサー、バンバリーミキサ
−1その他混合機等が使用できる。さらに、該混合のの
ち車軸押出機、二軸押出機などの各種押出機等の公知技
術によりベレット化し本発明に用いられる結晶性PP樹
脂組成物が得られる。In addition, if the MFR exceeds 5 g/710 minutes, it is not possible to maintain the same strength as when using a band of 38 to 5 g/10 minutes.In order to improve transparency and maintain strength, the VFR is 0.8 to 3 g. /Io is more preferable. Also, as a method for blending the propylene polymer and petroleum resin, a commonly used mixer such as a drum blender,
■Blender, Henschel mixer, Banbury mixer 1 and other mixing machines can be used. Furthermore, after this mixing, the crystalline PP resin composition used in the present invention is obtained by pelletizing by known techniques such as various extruders such as an axle-shaft extruder and a twin-screw extruder.
次に、本発明のバンド製造方法について説明する。前述
の方法で得られた結晶性PP樹脂組成物を原料とし本発
明のバンドを製造するが製造する方法は特に制限はなく
、バンド製造の公知、公用の装置および方法により行う
ことができる。Next, the band manufacturing method of the present invention will be explained. The band of the present invention is produced using the crystalline PP resin composition obtained by the above-described method as a raw material, but the method of production is not particularly limited, and can be carried out using any known or commonly used apparatus and method for band production.
たとえば、Tダイ付き押出機により該原料を190〜3
00℃の温度で溶融混練の後、広幅状ダイ或いはスリッ
ト状ダイより押出を行い、押出された広幅状シート或い
は帯状物を冷却水槽或いは冷却ロールによって冷却固化
させる。この後、帯状物はそのまま、またシート状物は
所定の幅にスリットした後熱風加熱炉、加熱温水槽、加
熱ロール、熱板、或いは遠赤外加熱炉等の加熱下で、回
転速度の異なる二組み以上のニップロール間において、
長さ方向に1段または2段以上の多段延伸を行うことが
できる。For example, using an extruder with a T-die, the raw material is
After melt-kneading at a temperature of 00° C., extrusion is performed through a wide die or slit die, and the extruded wide sheet or strip is cooled and solidified using a cooling water tank or a cooling roll. After this, the strip is left as it is, and the sheet is slit to a predetermined width and then heated with a hot air heating furnace, hot water tank, heating roll, hot plate, far infrared heating furnace, etc. at different rotation speeds. Between two or more sets of nip rolls,
Multi-stage stretching of one stage or two or more stages can be performed in the length direction.
この延伸の度合いによりバンドの分子配向の程度が支配
され、バンド製品の強度が決定される。The degree of stretching governs the degree of molecular orientation of the band and determines the strength of the band product.
その延伸条件は、結晶性PP樹脂を延伸加工する通常の
延伸温度および延伸倍率で良い、具体的には、延伸温度
は加熱媒体の温度として100〜200℃、延伸倍率2
〜12倍の範囲で良いが好ましくは延伸温度1.20〜
175℃、延伸倍率は4〜lO倍の範囲である。The stretching conditions may be the usual stretching temperature and stretching ratio for stretching crystalline PP resin. Specifically, the stretching temperature is 100 to 200°C as the temperature of the heating medium, and the stretching ratio is 2.
The stretching temperature is preferably 1.20 to 12 times, but preferably 1.20 to 12 times.
175° C., and the stretching ratio is in the range of 4 to 10 times.
さらに前記延伸により得られたPPバンドは伸びが小さ
く且つ収縮しやすいので経時的物性の低下等を防ぐため
公知の装置および方法により熱処理(アニーリング)を
通常弛緩率20%以下で行うことが好ましい。Furthermore, since the PP band obtained by the stretching has a small elongation and is easily shrunk, it is preferable to perform heat treatment (annealing) using a known device and method at a relaxation rate of 20% or less in order to prevent deterioration of physical properties over time.
実施例および比較例
以下に実施例および比較例により本発明を具体的に説明
するが本発明はその要旨を超えない限り以下の実施例に
より限定されるものではない。EXAMPLES AND COMPARATIVE EXAMPLES The present invention will be specifically explained below using Examples and Comparative Examples, but the present invention is not limited to the following Examples unless the gist thereof is exceeded.
尚、実施例および比較例において用いた測定方法等は次
のとおりである。The measurement methods used in the Examples and Comparative Examples are as follows.
(1) M F R: JIS K 5758に基づく
(2)引張試験;
試験機 東洋精機類テンシロンI型
標線間 200+am/min
引張速度 200mm/+m1n
(3)全ヘイズ: ASTM−D−1003に基づく透
明性の指標として全ヘイズにより行った。透明性の値は
小さいほど透明であることを意味する。(1) MFR: Based on JIS K 5758 (2) Tensile test; Testing machine Toyo Seiki Tensilon Type I between gauge lines 200+am/min Tensile speed 200mm/+m1n (3) Total haze: Based on ASTM-D-1003 Total haze was used as an indicator of transparency. The smaller the transparency value, the more transparent it is.
(4)測定環境:温度 23±1℃
湿度 50±3%
実施例1〜3
VFR−2g/l(1分の結晶性ポリプロピレンに石油
樹脂(ん用化学■製 商品名アルコンP125)を5〜
15重量部重量部へンシェルミキサー(商品名)で室温
3分間混合したのち、設定温度230℃の40φ■押出
機を用いてベレット化して組成物を得た。(4) Measurement environment: Temperature: 23±1℃ Humidity: 50±3% Examples 1 to 3 VFR-2g/l (1 minute crystalline polypropylene mixed with petroleum resin (trade name: Alcon P125, manufactured by Munyo Kagaku ■) for 5~
After mixing for 3 minutes at room temperature using a Henschel mixer (trade name) of 15 parts by weight, the mixture was pelletized using a 40 φ extruder with a set temperature of 230°C to obtain a composition.
該組成物を設定温度250℃のTダイ付き65φ■押出
機を用いて、冷却ロール温度30℃の条件下でシート状
に押出し厚み2IImのシートを成形したのち、該シー
トを設定温度140℃のロール延伸機を用いて縦方向に
延伸倍率9倍で厚み0,5■の一軸延伸バンドを成形し
た。The composition was extruded into a sheet with a cooling roll temperature of 30°C using a 65φ extruder equipped with a T-die at a set temperature of 250°C to form a sheet with a thickness of 2IIm. A uniaxially stretched band having a thickness of 0.5 cm was formed in the longitudinal direction using a roll stretching machine at a stretching ratio of 9 times.
透明性に優れたバンドが得られた。A band with excellent transparency was obtained.
実施例4
VFR=1g710分の結晶性ポリプロピレンに石油樹
脂(荒用化学■製 商品名アルコンP125) 15重
量部配合した他は実施例1〜3同様にして一軸延伸バン
ドを得た。Example 4 A uniaxially stretched band was obtained in the same manner as in Examples 1 to 3, except that 15 parts by weight of petroleum resin (trade name Alcon P125, manufactured by Arayo Kagaku ■) was blended with crystalline polypropylene having a VFR of 1 g and 710 minutes.
透明性および強度の優れたバンドが得られた。A band with excellent transparency and strength was obtained.
比較例I
M F R= 3 g/10分の結晶性ポリプロピレン
を実施例1〜3同様の成形条件で一軸延伸バンドを得た
。Comparative Example I A uniaxially stretched band of crystalline polypropylene having a weight ratio of 3 g/10 minutes was obtained under the same molding conditions as in Examples 1 to 3.
実施各側に比べi!J明性が不良であフた。Implementation compared to each side! J The brightness was poor and it was over.
比較例2
M F R= 1 g/10分の結晶性ポリプロピレン
を実施例1〜3同様の成形条件で一軸延伸バンドを得た
。Comparative Example 2 A uniaxially stretched band of crystalline polypropylene with MFR=1 g/10 minutes was obtained under the same molding conditions as in Examples 1 to 3.
実施例に比べ透明性が不良であった。Transparency was poor compared to Examples.
比較例3
V F R−2g710分の結晶性ポリプロピlノンに
石油樹脂(荒用化学■製 商品名アルコンP125)
3重量部を配合した他は実施例1〜3と同様の成形条件
で一軸延伸バンドを得た。Comparative Example 3 V F R-2g 710 minutes of crystalline polypropylene and petroleum resin (manufactured by Arayo Kagaku ■, trade name Alcon P125)
Uniaxially stretched bands were obtained under the same molding conditions as in Examples 1 to 3, except that 3 parts by weight was added.
比較例中では透明性は向上するがその程度は僅かである
。Although the transparency improves in the comparative examples, the degree of improvement is small.
比較例4
MFR=2g/10分の結晶性ポリプロピレンに石油樹
脂(荒用化学■製 商品名アルコンPL25) 30重
量部配合した他は実施例1〜3と同様の成形条件で一軸
延伸バンドを得た。Comparative Example 4 A uniaxially stretched band was obtained under the same molding conditions as Examples 1 to 3, except that 30 parts by weight of petroleum resin (trade name Alcon PL25, manufactured by Arayo Kagaku ■) was blended with crystalline polypropylene of MFR = 2 g/10 min. Ta.
透明性は優れるが強度低下が大きく延伸物としては不適
である。Although the transparency is excellent, the strength is greatly reduced and it is unsuitable as a stretched product.
比較例5〜6
MFR−2g/10分の結晶性ポリプロピレンに造核剤
メチレンビス(2,4−ジ−t−ブチルフェノール)ア
シッドフォスフェート (アデカ・アーガス畑製 商品
名MARK−NA11.IJF)を0.2〜11.4重
皿部を配合した他は実施例1〜3と同様の成形条件で一
軸延伸バンドを得た。Comparative Examples 5 to 6 MFR-2 g/10 minutes of crystalline polypropylene was added with 0 nucleating agent methylene bis(2,4-di-t-butylphenol) acid phosphate (manufactured by Adeka Argus Hatake, trade name MARK-NA11.IJF). Uniaxially stretched bands were obtained under the same molding conditions as in Examples 1 to 3, except that .2 to 11.4 double plate portions were added.
このバンドは延伸により白化が生じ透明性は得らねなか
った。This band became white due to stretching, and transparency could not be obtained.
本発明の実施例1〜4および比較例1〜6を表−1に示
す。Examples 1 to 4 of the present invention and Comparative Examples 1 to 6 are shown in Table-1.
本発明の実施例1〜4により透明性、強度共に優れたP
P一軸延伸バンドが得られることがわかる。P with excellent transparency and strength according to Examples 1 to 4 of the present invention
It can be seen that a P uniaxially stretched band is obtained.
[本発明の作用および効果]
本発明のPPバンドは従来のPPバンドに比べて著しく
透明性が優れることにより、新開紙、書籍、伝票類、郵
便物、印刷物等を梱包したのちに、バンドの下となった
被梱包物の文字や数字、図形などが鮮明に判読できるよ
うになり、わざわざバンドをずらす必要がなくなり被梱
包物の荷崩れすることがなくなり運搬上の効率化が期待
できる。[Operations and Effects of the Present Invention] The PP band of the present invention has significantly superior transparency compared to conventional PP bands, so that it can be easily used after packing paper, books, slips, mail, printed matter, etc. Characters, numbers, figures, etc. on the packaged items can be clearly read, and there is no need to take the trouble to shift the band, preventing the packaged items from collapsing, leading to improved transportation efficiency.
Claims (1)
は脂環族系石油樹脂5〜20重量部を配合してなりメル
トフローレート(MFR)が0.5〜5g/10分の結
晶性ポリプロピレン樹脂組成物を押出成形ののち一軸延
伸してなることを特徴とするポリプロピレン一軸延伸バ
ンド。(1) Crystalline polypropylene resin containing 5 to 20 parts by weight of aliphatic or alicyclic petroleum resin to 100 parts by weight of propylene polymer and having a melt flow rate (MFR) of 0.5 to 5 g/10 min. A polypropylene uniaxially stretched band, characterized in that it is made by extruding a composition and then uniaxially stretching it.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8850789A JPH02265928A (en) | 1989-04-07 | 1989-04-07 | Uniaxially oriented polypropylene band |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8850789A JPH02265928A (en) | 1989-04-07 | 1989-04-07 | Uniaxially oriented polypropylene band |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02265928A true JPH02265928A (en) | 1990-10-30 |
Family
ID=13944738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8850789A Pending JPH02265928A (en) | 1989-04-07 | 1989-04-07 | Uniaxially oriented polypropylene band |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02265928A (en) |
-
1989
- 1989-04-07 JP JP8850789A patent/JPH02265928A/en active Pending
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