JP5188320B2 - Manufacturing method of airtight different diameter bag - Google Patents
Manufacturing method of airtight different diameter bag Download PDFInfo
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- JP5188320B2 JP5188320B2 JP2008209487A JP2008209487A JP5188320B2 JP 5188320 B2 JP5188320 B2 JP 5188320B2 JP 2008209487 A JP2008209487 A JP 2008209487A JP 2008209487 A JP2008209487 A JP 2008209487A JP 5188320 B2 JP5188320 B2 JP 5188320B2
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本発明は気密性の異径バッグの製造方法に関するものであって、特に両端部が小径で中央部が大径となるように長さ方向に径が変化する異径の筒状織物に対し、その内面に気密性のチューブを貼着してライニングを施して、気密性を有する異径のバッグを製造するための方法である。 The present invention relates to a method for producing an airtight different-diameter bag, particularly for tubular fabrics of different diameters whose diameter changes in the length direction so that both ends are small in diameter and the central part is large in diameter. In this method, an airtight tube is attached to the inner surface of the inner surface to provide a lining, thereby producing a bag of different diameters having airtightness.
従来フレキシブルコンテナとして、例えば特開2005−22736号公報に示されるように、筒状の大径の本体部の両端に小径の投入筒及び排出筒を有するものが使用されているが、近年これらの本体部及び小径の筒部を連続した一体の筒状織物として製作したものが使用されるようになっている。 As a conventional flexible container, for example, as shown in JP-A-2005-22736, a container having a small-diameter input cylinder and a discharge cylinder at both ends of a cylindrical large-diameter main body is used. What manufactured the main body part and the small diameter cylinder part as a continuous integral cylindrical fabric is used.
また出願人は先に、大量の液体などを水上輸送する方法として、当該液体などをバッグに封入し、当該バッグを多数筏状に連結し、これを水上に浮遊させた状態でタグボートなどにより曳航する方法を開発し、先に特願2007−205788号として特許出願している。 In addition, as a method of transporting a large amount of liquid or the like on the surface, the applicant previously sealed the liquid or the like in a bag, connected a large number of the bags in a bowl shape, and towed it by a tugboat or the like while floating on the water. And a patent application has already been filed as Japanese Patent Application No. 2007-205788.
これらのバッグの構造としては、ターポリンなどの気密性の材料を使用して所望の形状に縫製したものが使用されるが、このようなものでは縫合部の強度が不十分であり、大きな荷重をかけると縫合部から破れる可能性が高い。 As the structure of these bags, what is sewn into a desired shape using an airtight material such as tarpaulin is used, but with such a thing, the strength of the stitched portion is insufficient and a large load is applied. When applied, there is a high possibility of tearing from the suture.
そこで近年、これらの用途に使用される異径バッグAの構造として、図1に示すように中央部に大径部2を形成し、その両端に小径部3を形成した、異径筒状織物1を連続して一体に織成し、当該異径筒状織物1の内面に内張り4を施して気密性を保持することが考えられている。 Therefore, in recent years, as a structure of the different-diameter bag A used for these applications, as shown in FIG. 1, a large-diameter portion 2 is formed at the center portion, and a small-diameter tubular fabric is formed at both ends thereof. It is conceivable to keep the airtightness by continuously weaving 1 integrally and applying a lining 4 to the inner surface of the tubular fabric 1 having a different diameter.
しかしながらこの方法では、異径筒状織物1が大径部2と小径部3との間で径が変化しているため、その大径部2と小径部3とに跨って内面に内張り4を形成することが困難である。 However, in this method, since the diameter of the tubular fabric 1 having a different diameter is changed between the large diameter portion 2 and the small diameter portion 3, the lining 4 is provided on the inner surface across the large diameter portion 2 and the small diameter portion 3. It is difficult to form.
考えられる最も簡単な方法としては、小径部3の内径よりやゝ小径のゴム又はプラスチックのチューブを挿通し、そのチューブに内圧をかけて膨張させ、異径筒状織物1の内面に貼着する法であるが、大径部2がチューブの径より大幅に大きいため、大径部2に沿うまでチューブを膨張させることが困難である。またチューブの径が小径部3の内径よりも大きいと、小径部3において内張り4に皴が生じる。 The simplest possible method is to insert a rubber or plastic tube whose diameter is slightly smaller than the inner diameter of the small-diameter portion 3, expand the tube by applying an internal pressure, and attach the tube to the inner surface of the different-diameter tubular fabric 1. Although it is a method, since the large diameter part 2 is significantly larger than the diameter of a tube, it is difficult to expand a tube until it follows the large diameter part 2. If the diameter of the tube is larger than the inner diameter of the small diameter portion 3, wrinkles occur in the lining 4 in the small diameter portion 3.
ゴムなどの伸びの大きいチューブを使用することにより大径部2にまで膨張させることも不可能ではないが、チューブに歪がかかった状態で貼り付けられることとなるため、接着が不十分であると剥れ易く、また内張り4の耐久性に劣りクラックなどが生じやすく、長期間に亙って気密性を保持することができない。 It is not impossible to expand to the large-diameter portion 2 by using a tube having a large elongation such as rubber, but since the tube is pasted in a distorted state, adhesion is insufficient. And the inner lining 4 is inferior in durability and easily cracked, and the airtightness cannot be maintained over a long period of time.
またプラスチックのチューブやフィルムを貼り合せて異径筒状織物1の内面形状にほゞ適合した形状の異径チューブを製作し、これを異径筒状織物1の内面に貼着することも考えられるが、異径チューブの貼り合せ部が固くなると共に強度が劣り、適切な内張り4を形成することが困難である。
本発明はかかる事情に鑑みなされたものであって、異径筒状織物1の内面に適切な内張り4を形成し、耐久性に富み且つ適切に内張りされた気密性異径バッグを製造することを目的とするものである。 This invention is made | formed in view of this situation, forms the suitable lining 4 in the inner surface of the different diameter cylindrical fabric 1, and manufactures the airtight different diameter bag which was rich in durability and was appropriately lining. It is intended.
而して本願第一の発明は、異径筒状織物の内側に内張りを施して気密性を有する異径バッグを製造する方法であって、製造する異径バッグとほゞ同形でやゝ小径の気密性の芯体の外側に熱収縮性チューブを被せ、当該熱収縮性チューブを加熱収縮させて前記芯体の外表面に沿わせ、熱収縮性チューブを冷却して形状を固定した後前記芯体を除去し、得られた異径チューブを前記異径筒状織物内に挿入し、内圧により異径チューブを膨張させて異径筒状織物の内面に圧接し、異径チューブを異径筒状織物に接着することを特徴とするものである。 Thus, the first invention of the present application is a method for manufacturing a different-diameter bag having airtightness by applying a lining to the inner side of the different-diameter tubular woven fabric, which is substantially the same shape as the different-diameter bag to be manufactured and has a slightly smaller diameter. A heat-shrinkable tube is placed on the outer side of the airtight core body, the heat-shrinkable tube is heated and shrunk so as to be along the outer surface of the core body, the heat-shrinkable tube is cooled and the shape is fixed. The core body is removed, and the obtained different-diameter tube is inserted into the different-diameter tubular fabric, and the different-diameter tube is expanded by internal pressure and pressed against the inner surface of the different-diameter tubular fabric. It is characterized by adhering to a tubular woven fabric.
また本願第二の発明は、異径筒状織物の内側に内張りを施して気密性を有する異径バッグを製造する方法であって、製造する異径バッグとほゞ同形でやゝ小径の気密性の芯体の外側に熱収縮性チューブを被せ、当該熱収縮性チューブを加熱収縮させて前記芯体の外表面に沿わせ、熱収縮性チューブを被せた芯体を前記異径筒状織物内に挿入し、内圧により芯体を膨張させて熱収縮性チューブを異径筒状織物の内面に圧接し、熱収縮性チューブを異径筒状織物に接着した後前記芯体を除去することを特徴とするものである。 Further, the second invention of the present application is a method for producing a different-diameter bag having a gas tightness by applying a lining to the inside of the different-diameter tubular woven fabric, which is almost the same shape as the different-diameter bag to be produced and has a small-diameter air-tightness. A heat-shrinkable tube is placed on the outer side of the heat-resistant core, the heat-shrinkable tube is heat-shrinked to be along the outer surface of the core, and the core covered with the heat-shrinkable tube is used as the different diameter cylindrical woven fabric. Inserting the inside, inflating the core by internal pressure, pressing the heat-shrinkable tube against the inner surface of the different-diameter tubular woven fabric, bonding the heat-shrinkable tube to the different-diameter cylindrical woven fabric, and then removing the core It is characterized by.
これらの本発明においては、前記異径筒状織物が、両端部が小径で中央部が大径となるように長さ方向に径が変化するものであることが好ましい。 In these present inventions, it is preferable that the different diameter tubular woven fabric has a diameter that changes in the length direction so that both end portions have a small diameter and a central portion has a large diameter.
また本発明における前記芯体は、柔軟な筒状の織物に気密処理を施したものであることが好ましい。また柔軟な布帛に気密処理を施し、それを所定の形状に縫製してなるものであってもよい。 Moreover, it is preferable that the said core body in this invention is what gave the airtight process to the flexible cylindrical fabric. Moreover, an airtight process may be performed on a flexible fabric and then sewn into a predetermined shape.
本発明によれば、熱収縮チューブを熱により収縮させて芯体の表面に沿わせるので、芯体の表面形状に従った形状の繋ぎ目の無い異径チューブが得られ、当該異径チューブを異径筒状織物1内に挿通して膨らませることにより、異径筒状織物1の内面に適切な内張り2を施し、気密性異径バッグを得ることができる。 According to the present invention, since the heat-shrinkable tube is shrunk by heat and along the surface of the core body, a seamless different-diameter tube having a shape according to the surface shape of the core body is obtained. By inserting and inflating into the different-diameter tubular fabric 1, an appropriate lining 2 is applied to the inner surface of the different-diameter tubular fabric 1, and an airtight different-diameter bag can be obtained.
以下本願第一の発明を図面に基づいて説明する。図2において5は芯体である。当該芯体5は製造しようとする異径バッグよりやゝ小径であって、当該異径バッグの形状とほゞ同形である。すなわち中央部に大径部6を有しその両端に小径部7が連続して形成された形状をなしている。 The first invention of the present application will be described below with reference to the drawings. In FIG. 2, 5 is a core. The core 5 has a slightly smaller diameter than the different-diameter bag to be manufactured, and is almost the same shape as the different-diameter bag. That is, it has a shape in which a large-diameter portion 6 is provided at the center and small-diameter portions 7 are continuously formed at both ends thereof.
この芯体5は柔軟な気密性の素材よりなっており、例えば異径の筒状織物の内面に気密性の内張りを施したものが好ましい。また気密性のターポリンなどの素材を所定の形状に縫製したものであってもよい。 The core body 5 is made of a flexible and airtight material. For example, an inner surface of a tubular woven fabric having a different diameter is preferably provided with an airtight lining. Further, a material such as airtight tarpaulin may be sewn into a predetermined shape.
この芯体5の小径部7の端末開口部を蓋8で閉塞し、その一端から注入管9を介して圧力流体を送入し、芯体5を内圧により膨らませた状態において、その外側に熱収縮性チューブ10を被せ、当該熱収縮性チューブ10を加熱して収縮させる。これにより熱収縮性チューブ10は径を縮小し、図3に示すように芯体5の外表面に沿う。
The terminal opening of the small-diameter portion 7 of the core body 5 is closed with a
この状態で熱収縮性チューブ10を冷却し、熱による収縮を停止すると、熱収縮性チューブ10は芯体5の表面に沿った形状で固定される。ここで芯体5の内圧を除去して図4に示すように収縮させ、熱収縮性チューブ10内から除去すると、異径バッグAの内面形状とほゞ同形の異径チューブ11が得られる。 When the heat-shrinkable tube 10 is cooled in this state and the shrinkage due to heat is stopped, the heat-shrinkable tube 10 is fixed in a shape along the surface of the core body 5. When the internal pressure of the core body 5 is removed and contracted as shown in FIG. 4 and removed from the heat-shrinkable tube 10, a different-diameter tube 11 having substantially the same shape as the inner surface of the different-diameter bag A is obtained.
次に図5に示すように、この異径チューブ11を異径筒状織物1内に挿入し、異径チューブ11の両端の開口端を蓋12で閉塞し、注入管13を介して異径チューブ11内に圧力流体を送入して膨らませて、図6に示すように異径筒状織物1の内面に圧接し、異径チューブ11を異径筒状織物1の内面に接着して内張り4を形成し、異径バッグAを得るのである。
Next, as shown in FIG. 5, this different diameter tube 11 is inserted into the different diameter tubular fabric 1, the open ends at both ends of the different diameter tube 11 are closed with
なお異径チューブ11を異径筒状織物1内面に接着する際には、異径チューブ11を内圧により膨らませて異径筒状織物1の内面に圧接した状態で、一旦熱収縮性チューブ10の収縮温度以上の温度に加熱して接着し、然る後内圧を維持しつつ収縮温度以下にまで冷却することにより、内張り4の歪を除去することができる。 When the different diameter tube 11 is bonded to the inner surface of the different diameter tubular fabric 1, the heat shrinkable tube 10 is temporarily in a state in which the different diameter tube 11 is inflated by an internal pressure and pressed against the inner surface of the different diameter tubular fabric 1. By heating to a temperature equal to or higher than the contraction temperature and bonding, and then cooling to a temperature equal to or lower than the contraction temperature while maintaining the internal pressure, the strain of the lining 4 can be removed.
以上述べた方法は請求項1の方法であるが、請求項2の方法においては、前記図3において得られた芯体5の表面に熱収縮性チューブ10を沿わせ、冷却して熱収縮性チューブ10の形状を固定した後、芯体5を除去することなくそのまま異径筒状織物1内に挿通し、図7に示すように芯体5内に流体圧力を作用させて膨らませ、異径チューブ11を異径筒状織物1内面に接着し、然る後異径チューブ11内から芯体5を除去し、図6に示す異径バッグAを得る。 The method described above is the method of claim 1, but in the method of claim 2, the heat-shrinkable tube 10 is placed along the surface of the core body 5 obtained in FIG. After fixing the shape of the tube 10, the core body 5 is inserted into the different-diameter cylindrical fabric 1 as it is without removing it, and is inflated by applying fluid pressure to the core body 5 as shown in FIG. The tube 11 is adhered to the inner surface of the different-diameter tubular fabric 1, and then the core body 5 is removed from the inside of the different-diameter tube 11 to obtain a different-diameter bag A shown in FIG.
本発明によれば、熱収縮性チューブ10を熱により収縮させることにより異径筒状織物1の形状とほゞ同形の異径チューブ11を形成し、当該異径チューブ11を異径筒状織物1に貼り付けて内張り4を形成するので、異径チューブ11を異径筒状織物1の内面に沿わせるのに過度に膨張させることがなく、過度の膨張により内張り4が破裂したり皴が生じたりすることがない。 According to the present invention, the heat-shrinkable tube 10 is contracted by heat to form a different-diameter tube 11 that is substantially the same shape as the different-diameter tubular fabric 1, and the different-diameter tube 11 is used as the different-diameter tubular fabric. 1 to form the lining 4 so that the different-diameter tube 11 does not excessively expand along the inner surface of the different-diameter tubular fabric 1, and the lining 4 is ruptured or wrinkled by excessive expansion. It does not occur.
また本発明により得られた異径バッグAは、つなぎ目のない一体の異径筒状織物1に、これもつなぎ目のない連続した異径チューブ11で内張りしたものであるので、柔軟であって且つ強度が大きく、しかも連続した内張り4により確実な気密性が保持されたものとなる。 Further, the different-diameter bag A obtained by the present invention is formed by lining a continuous different-diameter tube 11 without any joints on the seamless different-diameter tubular woven fabric 1, so that it is flexible and The strength is high, and a certain airtightness is maintained by the continuous lining 4.
本発明により得られる異径バッグAは、前述のようなフレキシブルコンテナや水上輸送用のバッグに限られるものではなく、気密性を必要とする種々のバッグに広く使用することができる。 The different-diameter bag A obtained by the present invention is not limited to the flexible container and the water transport bag as described above, and can be widely used for various bags that require airtightness.
1 異径筒状織物
2 大径部
3 小径部
4 内張り
5 芯体
10 熱収縮性チューブ
11 異径チューブ
DESCRIPTION OF SYMBOLS 1 Different diameter cylindrical fabric 2 Large diameter part 3 Small diameter part 4 Lining 5 Core body 10 Heat-shrinkable tube 11 Different diameter tube
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JPS58193122A (en) * | 1982-05-07 | 1983-11-10 | Fujikura Ltd | Preparation of thermally shrinkable plastic sleeve |
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JP2000128277A (en) * | 1998-10-23 | 2000-05-09 | Mitsubishi Kagaku Sanshi Corp | Highly airtight flexible container |
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