JPH03658A - Wear and abrasion resistant band for packaging - Google Patents
Wear and abrasion resistant band for packagingInfo
- Publication number
- JPH03658A JPH03658A JP10308690A JP10308690A JPH03658A JP H03658 A JPH03658 A JP H03658A JP 10308690 A JP10308690 A JP 10308690A JP 10308690 A JP10308690 A JP 10308690A JP H03658 A JPH03658 A JP H03658A
- Authority
- JP
- Japan
- Prior art keywords
- band
- width
- wear
- polypropylene
- embossing
- 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.)
- Granted
Links
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 11
- 238000005299 abrasion Methods 0.000 title abstract description 12
- 239000013078 crystal Substances 0.000 claims abstract description 23
- 239000004743 Polypropylene Substances 0.000 claims abstract description 16
- -1 polypropylene Polymers 0.000 claims abstract description 16
- 229920001155 polypropylene Polymers 0.000 claims abstract description 16
- 238000004049 embossing Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000007796 conventional method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 9
- 238000012856 packing Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000004229 Alkannin Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Package Frames And Binding Bands (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（技術分野）
本発明は、自動梱包機用に適した摩耗粉の発生が少ない
ポリプロピレン製梱包用バンドに関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a packaging band made of polypropylene and suitable for automatic packaging machines and which generates little abrasion powder.
（従来技術とその欠点）
ポリプロピレンバンドは、軽くて強く薬品に侵されにく
く熱融着しやすく安価なので、梱包用バンドとして広く
用いられている。(Prior Art and Its Disadvantages) Polypropylene bands are widely used as packaging bands because they are light, strong, hard to be attacked by chemicals, easy to heat-seal, and inexpensive.
ところが、従来のポリプロピレンバンドは、自動梱包機
にかけたとき、梱包機のバンド送りローラ、ガイド、引
締めローラなどと擦れ合って摩耗粉が生じ、これが梱包
機内にたまりやすい。そして、この摩耗粉が付着すると
ローラがスリップしたり、リミットスイッチが誤動作を
起すなどの穐々のトラブルを生じ、自動製造自動梱包の
ラインの円滑な運転を妨げる原因となる。したがって、
しばしば清掃を行わなければならない。However, when conventional polypropylene bands are applied to an automatic packing machine, they rub against the band feeding rollers, guides, tightening rollers, etc. of the packing machine, producing abrasion powder that tends to accumulate inside the packing machine. When this abrasion powder adheres, it causes problems such as roller slippage and limit switch malfunction, which impedes the smooth operation of the automatic manufacturing and packaging line. therefore,
Cleaning must be done frequently.
この問題の対策として表面を硬化処理したものやポリプ
ロピレン共重合体の使用なども提案されているが、十分
な成果をあげていない、そこで、従来は、摩耗粉の発生
はやむを得ない当然のこととし、主としてバンドのヤン
グ率、伸度、引張強度、耐縦割れ性などの改良に目が向
けられていた。As a countermeasure to this problem, the use of hardened surfaces and polypropylene copolymers have been proposed, but they have not produced sufficient results.Therefore, conventionally, the generation of wear particles has been considered an unavoidable and natural phenomenon. , attention was mainly focused on improving the Young's modulus, elongation, tensile strength, longitudinal cracking resistance, etc. of the band.
（本発明の課題ないし目的）
本発明の目的は、従来の市販品とくらべて著しく耐摩耗
性の向上したポリプロピレンバンドを提供する、にある
。(Problems and Objects of the Present Invention) An object of the present invention is to provide a polypropylene band with significantly improved wear resistance compared to conventional commercially available products.
（本発明の構成等）
前記目的を達成するための本発明の楕或は、特許請求の
範囲に記載のとおり、「ポリプロピレンを主材とし、赤
外線ヒータを含む加熱下で延伸倍率１１倍以上に一軸延
伸されたエンボス加工による表面凹凸を有する結晶化度
４１％以上で結晶粒子の幅が６０Å以上の実質厚み０．
３５ｍｍ以下の耐摩耗性梱包用バンド」である。(Structures of the present invention, etc.) As stated in the scope of the present invention to achieve the above-mentioned object or the claims, "a polypropylene-based product that is stretched at a stretching ratio of 11 times or more under heating including an infrared heater. The crystallinity is 41% or more, the width of the crystal grains is 60 Å or more, and the substantial thickness is 0.05 cm, which has surface irregularities due to uniaxially stretched embossing.
"Wear-resistant packaging band of 35 mm or less."
本発明にかかるバンドについて詳細に説明すると次のと
おりである。The band according to the present invention will be described in detail as follows.
このバンドは、ＭＩ値が０．５〜４ｇ／１０分の範囲の
結晶性ポリプロピレンを主材とし、これに各種安定剤、
無機系充填剤、着色用顔料を添加混合した公知の組成で
ある。This band is mainly made of crystalline polypropylene with an MI value in the range of 0.5 to 4 g/10 minutes, and various stabilizers and
This is a known composition in which an inorganic filler and a coloring pigment are added and mixed.
このバンドには、縦割れ防止、見かけ厚みとこしの強さ
の向上等の目的で、表裏両面からのエンボス加工による
適宜の寸法形状深さの凹凸を一定のパターンで分布させ
であることも従来品と同様である。バンドは通常梱包用
のもので、従来品と同様に実質厚み、すなわちエンボス
加工前の厚みが０．３５龍以下である。Conventionally, this band has irregularities of appropriate size, shape, and depth distributed in a fixed pattern by embossing on both the front and back sides for the purpose of preventing vertical cracks and improving the apparent thickness and stiffness. It is the same as the product. The band is normally used for packaging, and like conventional products, the actual thickness, that is, the thickness before embossing, is 0.35 mm or less.
本発明のバンドは、微視的構造において、とくに結晶化
度が４１％で結晶粒子の幅が６０Å以上のものである。The band of the present invention has a microscopic structure in which the degree of crystallinity is 41% and the width of crystal grains is 60 Å or more.
ここに結晶粒子の幅が６０Å以上とは、次の測定及び計
算により得られた測定値をいう、すなわち、バンド小片
から６点のサンプルをとり、島津製作所製ＸＤ−３Ａ型
Ｘ線回折装置を用いて、バンドの長軸方向に透過法によ
り赤道線上でブラッグ角をθとして２θ＝８〜２５°の
範囲をＸ線で走査し、赤道線上の回折強度のパターンか
ら回折強度曲線を得て、回折角２θ＝１１〜２４°に沿
ってベースラインを引き、ミラー指数（１１０）すなわ
ち回折角２θ＝１４．２°の回折強度曲線の見かけの半
価幅（β°）を測定し、半価幅β０からシエルラの式β
＝にλ／Ｄｃｏｓθによって算出したＤ値平均をもって
本発明にいう結晶粒子の幅大とする。ただし、定数に＝
０．９２、波長λ＝１．５４人である。なお、前記の測
定装置よりも分解能の低い例えば島津製作所製ＶＤ−１
型Ｘ線回折装置を用いて測定すると、結晶粒子幅の数値
は、数人程度低いものとなる０本件特許請求の範囲の数
値は、前述した分解能の高いＸＤ−３Ａ型により測定し
た場合の数値である。Here, the width of crystal grains of 60 Å or more refers to the measured value obtained by the following measurements and calculations. In other words, six samples were taken from a small band piece, and the width was measured using a XD-3A model X-ray diffractometer manufactured by Shimadzu Corporation. Using X-rays, scan the range of 2θ = 8 to 25° with the Bragg angle θ on the equator line using the transmission method in the long axis direction of the band, and obtain a diffraction intensity curve from the diffraction intensity pattern on the equator line, A baseline is drawn along the diffraction angle 2θ = 11 to 24°, and the Miller index (110), that is, the apparent half-width (β°) of the diffraction intensity curve at the diffraction angle 2θ = 14.2°, is measured. From the width β0, Sierra's equation β
The average D value calculated by λ/D cos θ is defined as the width of the crystal grain according to the present invention. However, to the constant =
0.92, wavelength λ=1.54 people. Note that, for example, the VD-1 manufactured by Shimadzu Corporation has a lower resolution than the above-mentioned measuring device.
When measured using an X-ray diffractometer, the numerical value of the crystal grain width is several times lower. It is.
このバンドを作るには、ポリプロピレンを主材とする材
料を一般に行われている方法条件で帯状に溶融し押出し
て帯状押出物を一旦急冷し、その表面付近の雰囲気がポ
リプロピレンの結晶融点以上３００℃までの間の温度に
なるよう赤外線ヒータを複数個長手方向に配置した長さ
数ｍの加熱室中に送り、加熱室外の前後に配した延伸ロ
ーラによる延伸を含む延伸倍率１１倍以上の延伸を行い
、慣用の方法でエンボス加工を施せばよい。To make this band, a material mainly composed of polypropylene is melted and extruded into a belt shape under commonly used method conditions, and the belt-shaped extrudate is once rapidly cooled, so that the atmosphere near the surface of the material is heated to 300°C above the crystalline melting point of polypropylene. The film is sent into a heating chamber several meters long in which a plurality of infrared heaters are arranged in the longitudinal direction so that the temperature reaches a temperature between Then, embossing can be performed using a conventional method.
このバンドは、従来品にくらべて耐摩耗性が著しく向上
しており、粒子幅が６０Å以上になると、５０人台のと
きにくらべて摩耗粉の発生量が約２分の１以下に激減す
る。その正確な理由は現在のところ判然としていないが
、緻密な結晶構造、とりわけ表面に欠陥の少ない構造と
なったため、擦過に対する耐摩耗性が向上したものと考
えられる。This band has significantly improved wear resistance compared to conventional products, and when the particle width is 60 Å or more, the amount of wear debris generated is drastically reduced to about half or less compared to when there are 50 people. . Although the exact reason for this is not clear at present, it is thought that the abrasion resistance against scratches is improved due to the dense crystal structure, especially the structure with fewer defects on the surface.
（実施例及び比較例） 以下に本発明の実施例につき説明する。(Example and comparative example) Examples of the present invention will be described below.
以下の実施例及び比較例の説明において、バンドの実質
厚み１．とは延伸後凹凸ロールによる賦形前の厚み、見
かけ厚みｔとは賦形後の厚み、結晶化度とは、理学電機
株式会社製の示差走査熱量計（ＤＳＣ）により、昇温速
度１０℃／分、記録紙送り速度１０ｍｍ／分、ＤＳＣレ
ンジ４±ｍｃａｌ／秒、サンプル量８〜Ｌｏｎｇの条件
で得られた融解的ｍＱから、ポリプロピレンの完全結晶
の熱融解量を６２ｃａｌ／ｇとして、次式により測定し
た値である。In the following description of Examples and Comparative Examples, the actual thickness of the band is 1. is the thickness before shaping with a textured roll after stretching, apparent thickness t is the thickness after shaping, and crystallinity is the temperature increase rate of 10°C using a differential scanning calorimeter (DSC) manufactured by Rigaku Denki Co., Ltd. /min, recording paper feed speed 10mm/min, DSC range 4±mcal/sec, sample amount 8~Long from the melting mQ obtained under the following conditions, assuming that the thermal melting amount of perfect polypropylene crystals is 62cal/g, This is the value measured using the formula.
結晶化度（％）＝（測定した融解熱量／６２．０）×
１００
また、選択的面配向度Ｒとは、前述したＸ線回折テスト
において、ミラー指数（１１０）と（０４０）すなわち
回折角２θ＝１４．２”と１６゜５°に相当する回折ピ
ークの強度比すなわちＲ＝（１１０）／（０４０）であ
る。Crystallinity (%) = (Measured heat of fusion/62.0) x
100 In addition, the degree of selective plane orientation R is the intensity of the diffraction peaks corresponding to the Miller indices (110) and (040), that is, the diffraction angles 2θ = 14.2” and 16°5° in the X-ray diffraction test described above. The ratio is R=(110)/(040).
実施例１゜
結晶性ポリプロピレン（宇部興産製：Ｅ１０３、ＭＩ３
）１００重量部に炭酸カルシウム３重量部を添加した原
料樹脂を押出機に供給し、２３０’Ｃでダイ２より帯状
に、引落し比１．７で押し出し、水温２０℃の冷却槽に
導くとともに、帯状物の表裏両面に対置する多数の細孔
を有する箱型の噴水器から水を噴出させ冷却固化して未
延伸バンドを得る。このバンドを赤外線ヒータを熱源と
して配した下記の加熱室、すなわち、長さ１．４ｍの加
熱槽を３槽連結して、各種のヒータの設定温度がそれぞ
れ４００℃、各種の中央におけるバンド走行部の雰囲気
温度が第１槽２３０℃、第２槽２６０℃、第３槽２９０
℃である加熱槽に挿通し、加熱槽の入口及び出口の延伸
ローラの速度比を１２倍とする慣用の走行速度での一軸
延伸を行い、実質厚みｔ。”０−３２５＋ｕのバンドを
得、次いでバンドの表面温度が１４０℃の状態で、表面
に斜交状の菱形凹部の連続パターンを有する一対のエン
ボス成型ローラにより挟圧してバンドの表裏両面に多数
の凹凸形状を賦形し、その後冷却槽に導いてバンドを冷
却し、続いて捲取機により捲取って幅１５．５ｍｍ、見
掛は厚みｔ＝０．６４ｍｍのバンドを得た。Example 1゜Crystalline polypropylene (manufactured by Ube Industries: E103, MI3
) A raw material resin containing 100 parts by weight and 3 parts by weight of calcium carbonate was supplied to an extruder, extruded at 230'C into a strip from die 2 at a drawing ratio of 1.7, and led to a cooling tank with a water temperature of 20°C. Water is jetted out from a box-shaped fountain having a large number of opposed pores on both the front and back surfaces of the strip, and the strip is cooled and solidified to obtain an unstretched band. This band is placed in the following heating chamber equipped with an infrared heater as a heat source, that is, three heating tanks each having a length of 1.4 m are connected, and the set temperature of each heater is 400°C. The ambient temperature in the first tank is 230°C, the second tank is 260°C, and the third tank is 290°C.
℃, and uniaxially stretched at a conventional running speed where the speed ratio of the stretching rollers at the inlet and outlet of the heating bath was set to 12 times, and the actual thickness was t. A band of 0-325+u was obtained, and then, with the surface temperature of the band at 140°C, it was pressed by a pair of embossing rollers having a continuous pattern of diagonal diamond-shaped recesses on the surface to form a large number of layers on both the front and back sides of the band. After forming the uneven shape, the band was cooled by being guided into a cooling tank, and then wound up using a winding machine to obtain a band having a width of 15.5 mm and an apparent thickness t=0.64 mm.
このバンドにつき、前記島津製作所製ＸＤ−３Ａ型Ｘ線
回折装置を用いて測定し前記のとおりの計算により本発
明で規定する結晶粒子幅を求めたところ、サンプル６点
の結晶粒子幅６３〜７０人、平均６７人であり、結晶化
度４３％、選択的面配向度Ｒ＝１．５６ （ただし、分
解能の低い前記島津製乍所製ＶＤ−１型Ｘ線回折装置に
より測定し算出した結晶粒子の幅は５７〜６５人、平均
６１人）であった。This band was measured using the XD-3A model X-ray diffractometer manufactured by Shimadzu Corporation, and the crystal grain width defined in the present invention was determined by calculation as described above. The crystal grain width of 6 samples was 63 to 70. The average number of people was 67, the degree of crystallinity was 43%, and the degree of selective plane orientation R was 1.56. The width of the particles was 57-65 (average 61).
このバンドを、自動梱包機（池貝鉄工■製：ＦＨＩ）に
セットして、４００Ｘ４００の角型の木箱を繰返し梱包
することにより、１巻２５００ｍ分を費消し、その際に
バンドと梱包機各部との擦過などにより発生した摩耗粉
を、吸引捕集して計量した結果は０．２ｇ／２５００ｍ
であった。By setting this band in an automatic packing machine (manufactured by Ikegai Iron Works: FHI) and repeatedly packing 400 x 400 square wooden boxes, the cost for one roll of 2,500 m is consumed. The result of suction collection and measurement of the abrasion powder generated due to friction with the
Met.
実施例２゜
加熱槽の設定温度が３１０℃で、バンド走行部の雰囲気
温度が第１槽１８０℃、第２槽２２０”Ｃ１第３槽２５
０℃であり、延伸倍率１１倍、エンボス成型前のバンド
表面温度が１２０℃であるほかは、実施例１と全く同一
の条件でバンドを製造した。このバンドは、結晶化度４
１％であり、本発明で規定した結晶粒子の平均幅６２人
（ただし、前述した分解能の低いＸ線回折装置で測定算
出した数値は平均５６人）、選択的面配向度Ｒ＝１゜５
１であった。また、実施例１同様のテストによる摩耗粉
の発生量は、０．４ｇ／２５００ｍであった。Example 2゜The set temperature of the heating tank is 310°C, and the ambient temperature of the band running part is 180°C in the first tank, 220"C in the second tank, 25" in the third tank.
A band was manufactured under exactly the same conditions as in Example 1, except that the temperature was 0°C, the stretching ratio was 11 times, and the band surface temperature before embossing was 120°C. This band has a crystallinity of 4
1%, the average width of the crystal grains specified in the present invention is 62 (however, the average value measured and calculated using the aforementioned low resolution X-ray diffraction device is 56), and the degree of selective plane orientation R = 1°5
It was 1. Further, the amount of abrasion powder generated in a test similar to Example 1 was 0.4 g/2500 m.
比較例１゜
実施例１と比較して、加熱槽の設定温度が２５０℃、バ
ンド走行部の雰囲気温度が第１槽１６０℃、第２槽２０
０℃、第３槽２２０℃、延伸倍率が１０倍、エンボス成
型前のバンド表面温度が１１０℃であるほかは、実施例
１と全く同一の条件で、幅１５．５ｍｓ、厚みｔｏ、６
ｓ＋ｗ＋のバンドを得た。このバンドは、結晶化度３９
％、本発明で規定した結晶粒子の幅５８人（ただし、前
記分解能の低い装置で測定した値は５３人）、選択的面
配向度Ｒ＝１．３２であった。Comparative Example 1゜Compared to Example 1, the set temperature of the heating tank was 250°C, the ambient temperature of the band running part was 160°C in the first tank, and 20°C in the second tank.
The conditions were exactly the same as in Example 1, except that the temperature was 0°C, the third tank was 220°C, the stretching ratio was 10 times, and the band surface temperature before embossing was 110°C, width 15.5 ms, thickness to 6.
A band of s+w+ was obtained. This band has a crystallinity of 39
%, the width of crystal grains defined in the present invention was 58 (however, the value measured with the low resolution device was 53), and the degree of selective plane orientation R was 1.32.
また、このバンドの前述したと同様のテストによる摩耗
粉の発生量は０．９ｇ／２５００ｒｎであるゆ
比較例２゜
１ 実施例１と同一の原料を用い、実施例１と同一の温
度で溶融押出しして、その後水槽に導いて冷却固化した
後、９５℃の熱湯槽中に通して７倍に延伸し、実施例１
と同様エンボス成型して、見かけ厚みｔｏ、６＠■、幅
１５．５ｍｍのバンドを得た。In addition, the amount of abrasion powder generated by this band in the same test as described above was 0.9g/2500rn. It was extruded, then introduced into a water bath to cool and solidify, and then passed through a hot water bath at 95°C and stretched 7 times.
Emboss molding was performed in the same manner as above to obtain a band with an apparent thickness of 6@■ and a width of 15.5 mm.
この従来一般的な製法によるバンドは結晶化度３９％、
結晶粒子の幅５１人（ただし、前記分解能の低い装置で
測定した値は４１人）、選択的面配向度Ｒ＝１．２１で
あった。また、摩耗粉の発生量は、１−２ｇ／２５００
ｍであった。The band manufactured using this conventional method has a crystallinity of 39%.
The width of the crystal grains was 51 (however, the value measured with the low resolution device was 41), and the degree of selective plane orientation R was 1.21. In addition, the amount of wear powder generated is 1-2g/2500
It was m.
参考例１゜
なお、参考としてＡ社製の幅１５．５ｓｍ、見かけ厚み
０．６２龍のポリプロピレンエンボス加工包装用バンド
につき測定しなところ、結晶化度３８．１％、選択的面
配向度Ｒ＝１．３で、結晶粒子の幅は５７人（ただし、
分解能の低い装置で測定した値は５１．９人）であった
。Reference Example 1゜As a reference, we measured a polypropylene embossed packaging band manufactured by Company A with a width of 15.5 sm and an apparent thickness of 0.62 mm, and found that the degree of crystallinity was 38.1% and the degree of selective plane orientation was R. = 1.3, and the width of the crystal grain is 57 people (however,
The value measured using a device with low resolution was 51.9 people).
このバンドを前同様の梱包機にかけてテストした結果摩
耗粉の発生量は０．９ｇ／２５００ｍであった。When this band was tested using the same packing machine as before, the amount of abrasion powder generated was 0.9 g/2500 m.
参考例２゜
また、Ｂ社製の幅１５．５１１、見かけ厚み０゜６４ｍ
−の前同様の市販品バンドにつき測定したところ、その
結晶化度は３９．４％、結晶粒子の幅は５１人（ただし
、分解能の低い装置での測定によると４５．４人）であ
ったが、このバンドにつき前同様の摩耗テストを行った
ところ、摩耗粉の発生量は、１．１ｇ／２５００ｍであ
った。Reference example 2゜Also, width 15.511 and apparent thickness 0゜64m made by company B.
- When a similar commercially available band was measured, its crystallinity was 39.4%, and the width of crystal grains was 51 particles (however, it was 45.4 particles when measured with a low-resolution device). However, when this band was subjected to the same wear test as before, the amount of wear powder generated was 1.1 g/2500 m.
（作用効果）
多くのテスト中の主要なものを前述したが、バンドの耐
摩耗性が向上するのは、赤外線ヒータを含む乾熱室中で
の高温高倍率延伸により、緻密な結晶構造、とりわけバ
ンド表面に欠陥の少ない構造が形成されたためと考えら
れ、結晶粒子の幅及び結晶化度が、この緻密な結晶構造
を定量的に表現し得るものと考えられる。(Function and effect) As mentioned above, the main factors in the many tests are as follows: The abrasion resistance of the band is improved by high-temperature, high-magnification stretching in a dry heat chamber containing an infrared heater, which improves the tight crystal structure, especially This is thought to be due to the formation of a structure with fewer defects on the band surface, and it is thought that the width and crystallinity of the crystal grains can quantitatively express this dense crystal structure.
通常の市販品では結晶粒子の幅が一般に５０人台である
が、このような製品では摩耗量が著しく大きい。たとえ
ば、比較例及び参考例の各１．２で述べた摩耗量の数値
を参照されたい。ところが、本発明のバンドは、実施例
１及び２の説明中に述べたとおり、結晶粒子の幅が少く
とも６０Å以上で結晶化度が４１％以上であり、摩耗量
が従来品の２分の１以下にとどまる優れた耐摩耗性を示
す。Although the width of crystal grains in ordinary commercially available products is generally on the order of 50 mm, the amount of wear in such products is extremely large. For example, please refer to the numerical values of the amount of wear described in 1.2 of each of the comparative example and reference example. However, as mentioned in the explanation of Examples 1 and 2, the band of the present invention has a crystal grain width of at least 60 Å and a crystallinity of 41% or more, and the amount of wear is half that of conventional products. Shows excellent wear resistance, staying below 1.
したがって、本発明の高温乾熱工高倍率の延伸によるバ
ンドは、自動梱包機に用いたとき極めて良好な耐庫粍性
を示す優れた性質を有（２、極めて有益である。Therefore, the band produced by high-temperature dry-heat processing and high-magnification stretching of the present invention has excellent properties that exhibit extremely good shelf life resistance when used in an automatic packaging machine (2), which is extremely useful.
特許出願人 宇部日東化成株式会社Patent applicant: Ube Nitto Kasei Co., Ltd.
Claims (1)
下で延伸倍率１１倍以上に一軸延伸された結晶化度４１
％以上で結晶粒子の幅が６０Å以上のエンボス加工によ
る表面凹凸を有する実質厚み０．３５ｍｍ以下の耐摩耗
性梱包用バンド。Polypropylene is the main material, and the crystallinity is 41, which is uniaxially stretched to a stretching ratio of 11 times or more under heating including an infrared heater.
A wear-resistant packaging band having a substantial thickness of 0.35 mm or less and having surface irregularities by embossing with a crystal grain width of 60 Å or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10308690A JPH03658A (en) | 1990-04-20 | 1990-04-20 | Wear and abrasion resistant band for packaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10308690A JPH03658A (en) | 1990-04-20 | 1990-04-20 | Wear and abrasion resistant band for packaging |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16996384A Division JPS6160460A (en) | 1984-08-16 | 1984-08-16 | Band for abrasion-resistant packaging and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03658A true JPH03658A (en) | 1991-01-07 |
| JPH0476769B2 JPH0476769B2 (en) | 1992-12-04 |
Family
ID=14344826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10308690A Granted JPH03658A (en) | 1990-04-20 | 1990-04-20 | Wear and abrasion resistant band for packaging |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03658A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5587533A (en) * | 1978-12-27 | 1980-07-02 | Sekisui Jushi Co Ltd | Production of band for heavy package |
-
1990
- 1990-04-20 JP JP10308690A patent/JPH03658A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5587533A (en) * | 1978-12-27 | 1980-07-02 | Sekisui Jushi Co Ltd | Production of band for heavy package |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0476769B2 (en) | 1992-12-04 |
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| EXPY | Cancellation because of completion of term |