【０００１】
【発明の属する技術分野】
本発明は巻芯のない状態で熱可塑性樹脂紐がコイル状に多数回巻かれてなる巻体に使用される型崩れ防止板、該型崩れ防止板が挿入されることにより、巻芯がなくても巻き姿が崩れない熱可塑性樹脂紐の巻体および熱可塑性樹脂紐巻体の型崩れ防止方法に関する。
【０００２】
【従来の技術】
従来、熱可塑性樹脂紐はポリプロピレン等のオレフィン系熱可塑性樹脂を溶融し、テープ状に押し出し、押出速度より引取速度を速くして延伸させ、熱可塑性樹脂紐とした後、紙管等の芯体に巻き取っている。
【０００３】
【発明が解決しようとする課題】
しかし、紙管に熱可塑性樹脂紐をコイル状に多数巻回した巻体は自動梱包機等で熱可塑性樹脂紐を使用した後に、紙管が残りその処置に困っている。すなわち一度使用した紙管は傷みがひどく芯体として再利用しがたいとともに、該紙管は合成樹脂系接着剤で固められていて再生紙の原料にもできず、そのまま廃棄処分されているのが現状である。
そこでかかる熱可塑性樹脂紐の使用者から巻芯のない熱可塑性樹脂紐のみの巻体に対する要望が強い。
【０００４】
かかる巻芯のない熱可塑性樹脂紐のみの巻体として特開平７−３１５６９０号公報に、接合面で接合された左側コアーと右側コアーからなるコアーのほぼ中央部に熱可塑性樹脂紐を一巻きし、端部と一巻きした部分との重なった部分に鏝を当てて融着し、続いて残りの熱可塑性樹脂紐をすべて巻回した後、左側コアーと右側コアーを取り外し紙管等の芯体のない巻体を製造する方法が記載されている。
【０００５】
しかし上記特開平７−３１５６９０号公報記載の巻芯のない熱可塑性樹脂紐のみの巻体は自動梱包機のリールにセットして使用するのであるが、梱包物の中身や発送先毎に熱可塑性樹脂紐の色を変えて使用する場合が多く、自動梱包機のリールにセットした熱可塑性樹脂紐を色の異なる他の熱可塑性樹脂紐と交換することが多々あり、熱可塑性樹脂紐の巻体の内層が自動梱包機のリールに当たり、型崩れを起こしやすく、内層が型崩れした熱可塑性樹脂紐の巻体は自動梱包機のリールにセットできないといった問題があった。
【０００６】
【課題を解決するための手段】
上記課題を解決するため本発明熱可塑性樹脂紐巻体の型崩れ防止板は、巻芯のない状態で熱可塑性樹脂紐がコイル状に多数回巻かれ、熱可塑性樹脂紐の巻き始め端部がコイル状に巻かれた一層上の熱可塑性樹脂紐に熱溶着などにより、解けないようになされてなる巻体の中空の中心部に筒状に巻かれて挿入される板体であって、該板体の長さが巻体の内周寸法にほぼ等しく、板体の幅が該巻体の幅寸法にほぼ等しく、該板体が筒状に巻かれた際に反発力が生じ、該板体が筒状に巻かれた状態で熱可塑性樹脂紐の巻体の中空の中心部に挿入されたのち、該板体が反発力を利用して拡開され、巻体の内壁に密接させられて使用されるものである。
【０００７】
また本発明熱可塑性樹脂紐巻体の型崩れ防止板は、筒状に巻かれた板体の両端部が着脱伸縮自在に接続されてなるものである。
【０００８】
さらに本発明熱可塑性樹脂紐巻体の型崩れ防止板は、板体の一端に幅方向と平行のスリットが形成され、板体の他端から該スリット幅と等しい挿入片が突設され、該挿入片がスリットに挿入された状態で板体が筒状に巻かれてなるものである。
【０００９】
さらにまた本発明熱可塑性樹脂紐巻体の型崩れ防止板は、板体の両縁部に立ち上がり片が形成され、各縁部の立ち上がり片間の間隔が熱可塑性樹脂紐の巻体の幅にほぼ等しくなされたものである。
【００１０】
本発明型崩れ防止板付き熱可塑性樹脂紐巻体は、巻芯のない状態で熱可塑性樹脂紐がコイル状に多数回巻かれてなる巻体において、該巻体の中空の中心部に長さが巻体の内周にほぼ等しく、幅が該巻体の幅にほぼ等しい板体が筒状に巻かれて挿入され、該板体が自身の反発力により巻体の内周面に沿う型崩れ防止板が挿入されてなるものである。
【００１１】
本発明熱可塑性樹脂紐巻体の型崩れ防止方法は、巻芯のない状態で熱可塑性樹脂紐がコイル状に多数回巻かれてなる巻体の中空の中心部に長さが該巻体の内周とほぼ等しく、幅が該巻体の幅にほぼ等しい板体を筒状に巻いて挿入し、該板体が自身の反発力により巻体の内周面に沿う型崩れ防止板を使用したものである。
【００１２】
【発明の実施の形態】
以下、図面を参照しながら本発明について詳述する。
図面において、１は熱可塑性樹脂紐の巻体である。該熱可塑性樹脂紐は５倍〜１０倍程度延伸されて引張強度が著しく向上されたポリプロピレン等のオレフィン系樹脂からなり、通常熱可塑性樹脂紐の幅が１０ｍｍ〜２０ｍｍ程度、厚みが０．３ｍｍ〜１ｍｍ程度のものがよく用いられるが、樹脂としては延伸により引張強度が向上するものであればポリエステル、ポリアミド等であってもよい。そしてこの熱可塑性樹脂紐を１０００ｍ〜２５００ｍ程度巻回して１個の巻体１とするのであって、巻体１の寸法は幅１００ｍｍ〜２５０ｍｍ、内径２００ｍｍ、外径３００ｍｍ〜５００ｍｍ、重量１０ｋｇ〜２５ｋｇ程度となされている。該熱可塑性樹脂紐の巻き始め端部はコイル状に巻かれた一層上の熱可塑性樹脂紐に熱溶着等により、解れないようになされている。
【００１３】
また図面において、２は型崩れ防止板である。該型崩れ防止板２を構成する板体はポリプロピレン、ポリエステル等の合成樹脂、薄鋼板等の金属、厚紙等の他、特に故紙と回収プラスチックとの粉砕混合品からなるシートが好適に使用される。
【００１４】
またこの型崩れ防止板２を構成する板体は、長さが熱可塑性樹脂紐の巻体１の内周寸法とほぼ等しく、該板体の幅が該巻体の幅寸法にほぼ等しい寸法となされており、該板体を筒状に巻いた際に反発力が生じるようになされている。したがって該板体を筒状に巻いた状態で熱可塑性樹脂紐の巻体１の中空の中心部に挿入したのち、該板体を反発力を利用して拡開し、巻体１の内壁に密設させて使用するのである。したがって板体の幅は巻体１の幅にほぼ等しくなされ、板体の長さは巻体１の内周の寸法より長くなされ、第１図（イ）のごとく重ね合わせ部が形成されていてもよいし、巻体１の内周の寸法より短くなされ、第１図（ロ）のごとく両端部間に間隙ができてもよい。
【００１５】
型崩れ防止板２が巻体１の内壁に挿入された場合、その反発力で巻体内壁に密接されているだけであると、両端部分がずれるおそれがあるが、これを防止するためには、筒状に巻かれた板体の両端部が着脱伸縮自在に接続されるようにすればよい。例えば板体の一端に幅方向と平行のスリット２１が形成され、板体の他端から該スリット幅と等しい挿入片２２が突設され、該挿入片２２がスリット２１に挿入された状態で板体が筒状となされ、巻体１の内壁に挿入されたのち、筒状の板体が拡開された場合に挿入片２２がスリット２１から抜けるようになされるとよい。他の手段としては板体の両端に、互いに逆向きのＬ字状のフックを設け両フックを掛け合わせるようにしてもよいし、その他筒状に巻かれた板体の両端部が着脱伸縮自在に接続されるのであればどのような方法でもよい。
【００１６】
なお、板体の両端部が着脱伸縮自在に接続される場合、板体自身の両端が重なり合った状態であってもよいし、着脱伸縮自在に接続される部分のみが重なり合っていてもよい。
【００１７】
さらに型崩れ防止板２全体が巻体内壁からずれるおそれがある場合には、板体の両縁部に熱可塑性樹脂紐巻体の幅にほぼ等しい立ち上がり片２３が形成され、各縁部の立ち上がり片２３間の間隙に熱可塑性樹脂紐の巻体１を嵌合させれば、型崩れ防止板２がずれるおそれがなく、該熱可塑性樹脂紐の巻体１を梱包機のリールに繰り返し着脱しても該巻体１から型崩れ防止板２がはずれない。なお、立ち上がり片２３の高さが板体の厚さとほぼ等しくなされておれば、型崩れ防止板２を広げた状態で積み重ねても該立ち上がり片２３が邪魔にならず、型崩れ防止板２をきっちり積み重ねることができ好ましい。
【００１８】
また該型崩れ防止板２が熱可塑性樹脂紐巻体１と同色となされ、熱可塑性樹脂紐巻体１の色の種類だけ用意しておけば、熱可塑性樹脂紐巻体１ごとに該型崩れ防止板２の色彩を揃えることができて好ましい。
【００１９】
【実施例】
以下本発明の実施例について詳述する。
本発明に使用される巻芯のない巻体を構成する熱可塑性樹脂紐は、ほぼ９．０倍に延伸され、引張強度が約１８０ｋｇのポリプロピレン製であって、幅１５．５ｍｍ、厚み０．６ｍｍであり、巻体はこのポリプロピレン製紐を２５００ｍ巻き取ったものであって、巻体の幅は１９０ｍｍ、内径２００ｍｍ、外径４５０ｍｍのドーナツ形となされ、その重量は１２ｋｇであった。
【００２０】
一方、上記巻体に挿入される型崩れ防止板として、回収ポリエステルと故紙が２対３の割合で混合された樹脂シートから幅１９０ｍｍ、長さ７００ｍｍ、厚さ１ｍｍの板体を作製し、実施例１とした。
また、上記板体の長さが６００ｍｍとなされ、その一端に端より５０ｍｍの位置に該板体の幅方向に長い長さ３５ｍｍ、幅３ｍｍのスリットを２個穿設すると共に、上記板体の他端に幅３０ｍｍ、長さ１００ｍｍの挿入片を２本一体に形成し、実施例２とした。
さらに、実施例１と同寸法の板体の両縁部に高さ３ｍｍの立ち上がり片を等間隔で３個ずつ形成し、実施例３とした。
【００２１】
上記実施例１〜３の型崩れ防止板をそれぞれ筒状にして上記ポリプロピレン製紐巻体の中空の中心部に挿入し、反発力にて中空の内壁に密接させこの状態で自動梱包機のリールに１０回着脱を繰り返したが、いずれの実施例もポリプロピレン製紐巻体の内側のポリプロピレン製紐巻体の内側は型崩れしなかった。
これに対して上記ポリプロピレン製紐巻体のみを自動梱包機のリールに着脱したところ５回で内層のポリプロピレン製紐が解れてしまった。
【００２２】
【発明の効果】
以上詳述した如く、本発明熱可塑性樹脂紐巻体の型崩れ防止板は板体の長さが巻体の内周寸法にほぼ等しく、板体の幅が該巻体の幅寸法にほぼ等しく、筒状に巻かれた際に反発力を有するものであるから、巻芯のない状態で熱可塑性樹脂紐がコイル状に多数回巻かれてなる巻体の中空の中心部に筒状にして挿入後、その反発力により、拡開されて巻体の内壁に密接され、巻体の内壁が該型崩れ防止板により保護され、該熱可塑性樹脂紐巻体を自動梱包機のリールに着脱しても巻体の内壁の熱可塑性樹脂紐が解れない。
【００２３】
また本発明型崩れ防止板は、筒状に巻かれた板体の両端部が着脱伸縮自在に接続されてなる場合は、該型崩れ防止板が熱可塑性樹脂紐巻体の内壁に密接された際に、板体の端部同士がずれず、型崩れ防止板が熱可塑性樹脂紐巻体から外れにくくなり好ましい。
【００２４】
さらに本発明型崩れ防止板は、板体の一端に幅方向と平行のスリットが形成され、板体の他端から該スリット幅と等しい挿入片が突設され、該挿入片がスリットに挿入された状態で板体が筒状に巻かれてなる場合は、熱可塑性樹脂紐巻体内の型崩れ防止板の端部同士が一層外れにくくなり好ましい。
【００２５】
さらにまた本発明型崩れ防止板は、板体の両縁部に立ち上がり片が形成され、各縁部の立ち上がり片間の間隔が熱可塑性樹脂紐の巻体の幅にほぼ等しくなされてなる場合は、型崩れ防止板の立ち上がり片が熱可塑性樹脂紐巻体の内壁の縁部に係止され、該型崩れ防止板が熱可塑性樹脂紐巻体の内壁からずれないとともに、熱可塑性樹脂紐巻体の内壁の縁部が該立ち上がり片で保護され、該縁の崩れが防止される。
【００２６】
本発明型崩れ防止板付き熱可塑性樹脂紐の巻体は、巻芯のない状態で熱可塑性樹脂紐がコイル状に多数回巻かれてなる巻体の中空の中心部に長さが巻体の内周にほぼ等しく幅が該巻体の幅にほぼ等しい板体が筒状に巻かれて挿入され、該板体が自身の反発力により巻体の内周面に沿わされてなるので、該型崩れ防止板付き熱可塑性樹脂紐巻体を自動梱包機のリールに着脱しても該巻体の内周面が型崩れ防止板により保護されて直接リールに触れず、巻体内壁部分の熱可塑性樹脂紐が解れることがなく、巻体の熱可塑性樹脂紐を最後まで使用することができる。
【００２７】
本発明熱可塑性樹脂紐巻体の型崩れ防止方法は、巻芯のない状態で熱可塑性樹脂紐がコイル状に多数回巻かれてなる巻体の中空の中心部に、長さが該巻体の内周とほぼ等しく、幅が該巻体の幅にほぼ等しい板体を筒状に巻いて挿入し、該板体が自身の反発力により巻体の内周面に沿わせてなるので、該反発力により板体が巻体の内周に密接され、該巻体内壁の熱可塑性樹脂紐が解れず、自動梱包機にて該巻体の熱可塑性樹脂紐を最後まできっちり使用することができる。
【図面の簡単な説明】
【図１】本発明熱可塑性樹脂紐の巻体の一例を示す正面図であって、（イ）は型崩れ防止板が巻体内周より長い例、（ロ）は型崩れ防止板が巻体内周より短い例を示す。
【図２】本発明熱に使用される型崩れ防止板の一例の正面図である。
【図３】本発明熱に使用される型崩れ防止板の他の例であって、（イ）はその斜視図、（ロ）は使用状態の断面図である。
【符号の説明】
１ 巻体
２ 型崩れ防止板
２１ スリット
２２ 挿入片
２３ 立ち上がり片[0001]
BACKGROUND OF THE INVENTION
The present invention provides a mold-break prevention plate used for a wound body in which a thermoplastic resin string is wound many times in a coil shape in the absence of a roll core. The present invention relates to a thermoplastic resin cord wound body that does not collapse even when wound, and a method for preventing the collapse of the thermoplastic resin string wound body.
[0002]
[Prior art]
Conventionally, a thermoplastic resin string is made by melting an olefinic thermoplastic resin such as polypropylene, extruding it into a tape shape, drawing it at a higher take-off speed than the extrusion speed, and making it a thermoplastic resin string, and then a core such as a paper tube. It is wound around.
[0003]
[Problems to be solved by the invention]
However, a paper body in which a large number of thermoplastic resin strings are wound around a paper tube in a coil shape remains after the paper tube remains after the thermoplastic resin string is used in an automatic packing machine or the like. In other words, once used paper tubes are severely damaged and difficult to reuse as a core, and the paper tubes are hardened with a synthetic resin adhesive and cannot be used as a raw material for recycled paper. Is the current situation.
Therefore, there is a strong demand from users of such thermoplastic resin cords for a roll of only a thermoplastic resin cord without a core.
[0004]
As a wound body of only a thermoplastic resin string having no winding core, Japanese Patent Laid-Open No. 7-315690 discloses that a thermoplastic resin string is wound around a substantially central portion of a core composed of a left core and a right core joined at a joining surface. , Put the heel on the overlapped part of the end and the wound part, and then fuse all the remaining thermoplastic resin strings, then remove the left and right cores and remove the core of the paper tube, etc. A method of manufacturing a wound body without any is described.
[0005]
However, the winding body of only the thermoplastic resin string without the winding core described in JP-A-7-315690 is used by setting it on the reel of the automatic packing machine. There are many cases in which the color of the resin string is changed, and the thermoplastic resin string set on the reel of the automatic packing machine is often replaced with another thermoplastic resin string of a different color. The inner layer hits the reel of the automatic packing machine, and is likely to lose its shape, and the roll of the thermoplastic resin string whose inner layer is out of shape cannot be set on the reel of the automatic packing machine.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the thermoplastic resin string wound plate of the present invention has an anti-deformation plate in which the thermoplastic resin string is wound many times in the shape of a coil without a core, and the winding start end of the thermoplastic resin string is A plate body that is wound into a cylindrical shape and inserted into a hollow central portion of a wound body that is made undissolved by heat welding or the like on a thermoplastic resin string on one layer wound in a coil shape, The length of the plate body is substantially equal to the inner circumferential dimension of the roll body, the width of the plate body is substantially equal to the width dimension of the roll body, and a repulsive force is generated when the plate body is wound into a cylindrical shape, After the body is wound into a cylindrical shape and inserted into the hollow center of the thermoplastic resin string, the plate is expanded using the repulsive force and brought into close contact with the inner wall of the roll Used.
[0007]
Moreover, the shape loss prevention plate of the thermoplastic resin string wound body of the present invention is formed by connecting both end portions of a cylindrically wound plate body so as to be detachable and extendable.
[0008]
Furthermore, in the thermoplastic resin string wound plate of the present invention, a slit parallel to the width direction is formed at one end of the plate body, and an insertion piece equal to the slit width is projected from the other end of the plate body, The plate is wound into a cylindrical shape with the insertion piece inserted into the slit.
[0009]
Furthermore, the thermoplastic resin string wound plate of the present invention has an anti-deformation plate in which rising pieces are formed on both edge portions of the plate body, and the interval between the rising pieces on each edge portion is equal to the width of the thermoplastic resin string winding body. It was made almost equally.
[0010]
The thermoplastic resin string wound body with a mold-break-preventing plate according to the present invention is a wound body in which a thermoplastic resin string is wound many times in a coil shape in a state without a core, and the length is at the hollow center part of the wound body. A plate body having a width approximately equal to the inner circumference of the wound body and a width substantially equal to the width of the wound body is inserted in a cylindrical shape, and the plate body is inserted along the inner circumferential surface of the wound body by its own repulsive force. A collapse prevention plate is inserted.
[0011]
The method of preventing the collapse of the thermoplastic resin cord wound body according to the present invention is such that the length of the winding body is the length of the hollow central portion of the wound body in which the thermoplastic resin string is wound many times in a coil shape without a core. A plate that is almost the same as the inner circumference and the width is almost the same as the width of the wound body is inserted in a cylindrical shape, and the plate body uses a reversal prevention plate along the inner circumferential surface of the wound body by its own repulsive force. It is a thing.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings.
In the drawings, 1 is a roll of a thermoplastic resin string. The thermoplastic resin string is made of an olefin-based resin such as polypropylene that has been stretched about 5 to 10 times to remarkably improve the tensile strength. Usually, the thermoplastic resin string has a width of about 10 mm to 20 mm and a thickness of 0.3 mm to A resin having a thickness of about 1 mm is often used, but the resin may be polyester, polyamide, or the like as long as the tensile strength is improved by stretching. And this thermoplastic resin string is wound about 1000m-2500m, and it is set as one wound body 1, Comprising: The dimension of the wound body 1 is width 100mm-250mm, inner diameter 200mm, outer diameter 300mm-500mm, weight 10kg-25kg. It is about. The winding start end portion of the thermoplastic resin string is prevented from being unwound by thermal welding or the like on the upper layer thermoplastic resin string wound in a coil shape.
[0013]
In the drawings, reference numeral 2 denotes a shape loss prevention plate. As the plate body constituting the shape loss prevention plate 2, a sheet made of a pulverized mixture of waste paper and recovered plastic is used in addition to a synthetic resin such as polypropylene and polyester, a metal such as a thin steel plate, and cardboard. .
[0014]
Further, the plate body constituting the shape loss prevention plate 2 has a length substantially equal to the inner peripheral dimension of the thermoplastic resin wound body 1, and the width of the plate body is substantially equal to the width dimension of the wound body. Thus, a repulsive force is generated when the plate is wound into a cylindrical shape. Therefore, after inserting the plate body into a hollow central portion of the thermoplastic resin winding body 1 in a state of being wound in a cylindrical shape, the plate body is expanded using a repulsive force, and the inner wall of the winding body 1 is expanded. They are used in close proximity. Therefore, the width of the plate is substantially equal to the width of the roll 1, the length of the plate is longer than the inner circumference of the roll 1, and the overlapping portion is formed as shown in FIG. Alternatively, it may be shorter than the inner circumference of the wound body 1, and a gap may be formed between both ends as shown in FIG.
[0015]
When the shape-prevention prevention plate 2 is inserted into the inner wall of the wound body 1, there is a risk that both end portions may be displaced if it is only in close contact with the wound body wall due to the repulsive force. The two ends of the plate wound in a cylindrical shape may be connected detachably and detachably. For example, a slit 21 parallel to the width direction is formed at one end of the plate body, an insertion piece 22 equal to the slit width is projected from the other end of the plate body, and the insertion piece 22 is inserted into the slit 21 in a state where the plate is inserted. After the body is formed into a cylindrical shape and inserted into the inner wall of the wound body 1, the insertion piece 22 may be removed from the slit 21 when the cylindrical plate body is expanded. As other means, L-shaped hooks opposite to each other may be provided at both ends of the plate body, and both hooks may be hooked together, or both end portions of the plate body wound in a cylindrical shape can be freely attached and detached. Any method may be used as long as it is connected to the.
[0016]
In addition, when the both ends of a plate body are connected so that attachment or detachment expansion / contraction is possible, the both ends of plate body itself may overlap, and only the part connected so that attachment / detachment expansion / contraction is possible may overlap.
[0017]
Further, when there is a possibility that the entire shape-preventing plate 2 may be displaced from the wall of the winding body, rising pieces 23 substantially equal to the width of the thermoplastic resin cord winding body are formed on both edge portions of the plate body, and rising edges of the respective edge portions are formed. If the winding body 1 of the thermoplastic resin string is fitted in the gap between the pieces 23, there is no possibility that the anti-deformation plate 2 is displaced, and the winding body 1 of the thermoplastic resin string is repeatedly attached to and detached from the reel of the packaging machine. However, the anti-deformation plate 2 cannot be removed from the wound body 1. If the height of the rising piece 23 is substantially equal to the thickness of the plate body, the rising piece 23 does not get in the way even when the shape-preventing plate 2 is stacked in an expanded state. It can be stacked exactly, which is preferable.
[0018]
Further, if the shape-loss prevention plate 2 has the same color as that of the thermoplastic resin cord wound body 1 and only the kind of the color of the thermoplastic resin cord wound body 1 is prepared, the loss of shape for each thermoplastic resin cord wound body 1 is performed. It is preferable because the colors of the prevention plate 2 can be made uniform.
[0019]
【Example】
Examples of the present invention will be described in detail below.
The thermoplastic resin string constituting the wound body having no winding core used in the present invention is made of polypropylene having a tensile strength of about 180 kg, stretched approximately 9.0 times, having a width of 15.5 mm and a thickness of 0.00. The roll was obtained by winding up 2500 m of this polypropylene string. The roll had a width of 190 mm, an inner diameter of 200 mm, and an outer diameter of 450 mm, and its weight was 12 kg.
[0020]
On the other hand, a plate body having a width of 190 mm, a length of 700 mm, and a thickness of 1 mm was prepared from a resin sheet in which the recovered polyester and waste paper were mixed in a ratio of 2 to 3, as an anti-deformation plate inserted into the roll. Example 1 was adopted.
Further, the length of the plate body is 600 mm, and two slits having a length of 35 mm and a width of 3 mm long in the width direction of the plate body are formed at one end of the plate body at a position of 50 mm from the end. Two insertion pieces having a width of 30 mm and a length of 100 mm were integrally formed at the other end to obtain Example 2.
Further, three rising pieces each having a height of 3 mm were formed at equal intervals on both edges of a plate body having the same dimensions as in Example 1 to obtain Example 3.
[0021]
Each of the above-described Examples 1 to 3 is formed into a cylindrical shape and inserted into the hollow central portion of the polypropylene cord winding body, and is brought into close contact with the hollow inner wall by a repulsive force. In this state, the reel of the automatic packing machine In each of the examples, the inner side of the polypropylene cord wound body inside the polypropylene cord wound body did not lose its shape.
On the other hand, when only the polypropylene string wound body was attached to and detached from the reel of the automatic packing machine, the inner layer polypropylene string was unwound after 5 times.
[0022]
【The invention's effect】
As described above in detail, the shape loss prevention plate of the thermoplastic resin cord wound body of the present invention has a plate body length approximately equal to the inner circumferential dimension of the wound body, and a plate body width substantially equal to the width dimension of the wound body. Since it has a repulsive force when wound in a cylindrical shape, it is formed into a cylindrical shape in the hollow central portion of a wound body in which a thermoplastic resin string is wound many times in a coil shape without a core. After insertion, due to the repulsive force, it is expanded and brought into close contact with the inner wall of the winding body, the inner wall of the winding body is protected by the anti-deformation plate, and the thermoplastic resin string winding body is attached to and detached from the reel of the automatic packing machine. However, the thermoplastic resin string on the inner wall of the wound body cannot be broken.
[0023]
Further, when the both ends of the cylindrically wound plate body are detachably connected to each other, the mold collapse prevention plate of the present invention is in close contact with the inner wall of the thermoplastic resin cord wound body. At this time, the end portions of the plate members are not displaced from each other, and the shape-preventing plate is preferably removed from the thermoplastic resin string wound body.
[0024]
Furthermore, the mold collapse prevention plate of the present invention is formed with a slit parallel to the width direction at one end of the plate body, an insertion piece having the same width as the slit is projected from the other end of the plate body, and the insertion piece is inserted into the slit. When the plate body is wound in a cylindrical shape in a state where it is in a state, it is preferable that the end portions of the anti-deformation plate in the thermoplastic resin cord wound body are more difficult to come off.
[0025]
Furthermore, in the case where the present invention collapsible prevention plate is formed with rising pieces on both edge portions of the plate body, and the interval between the rising pieces of each edge portion is substantially equal to the width of the winding body of the thermoplastic resin string. The rising piece of the anti-deformation plate is locked to the edge of the inner wall of the thermoplastic resin cord winding body, and the anti-deformation plate does not deviate from the inner wall of the thermoplastic resin cord winding body. The edge of the inner wall is protected by the rising piece, and the collapse of the edge is prevented.
[0026]
The wound body of the thermoplastic resin string with a mold-break-preventing plate of the present invention has a length in the hollow central part of the wound body in which the thermoplastic resin string is wound many times in a coil shape without a core. A plate body having a width approximately equal to the inner periphery and approximately equal to the width of the winding body is wound in a cylindrical shape and inserted, and the plate body is formed along the inner peripheral surface of the winding body by its repulsive force. Even if the thermoplastic resin string wound body with the deformation prevention plate is attached to or detached from the reel of the automatic packing machine, the inner peripheral surface of the wound body is protected by the deformation prevention plate and does not directly touch the reel, so The thermoplastic resin string is not broken and the thermoplastic resin string of the wound body can be used to the end.
[0027]
The method for preventing the collapse of the thermoplastic resin cord wound body according to the present invention is such that a length is provided at the hollow central portion of a wound body in which a thermoplastic resin string is wound many times in a coil shape without a core. A plate body having a width approximately equal to the inner periphery of the winding body and approximately the same width as the width of the winding body is inserted in a cylindrical shape, and the plate body is along the inner peripheral surface of the winding body by its repulsive force. The plate body is brought into close contact with the inner periphery of the wound body due to the repulsive force, and the thermoplastic resin string on the wall of the wound body cannot be unwound, and the thermoplastic resin string of the wound body can be used completely in an automatic packing machine. it can.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a front view showing an example of a wound body of a thermoplastic resin string of the present invention, in which (A) is an example in which an anti-deformation plate is longer than the circumference of the wound body, and (B) is an anti-deformation plate in an inner roll An example shorter than a lap is shown.
FIG. 2 is a front view of an example of an anti-deformation plate used for heat according to the present invention.
FIGS. 3A and 3B are other examples of an anti-deformation plate used for heat according to the present invention, in which FIG. 3A is a perspective view thereof, and FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Winding body 2 Deformation prevention board 21 Slit 22 Insertion piece 23 Standing piece
