JP2005082169A - Long tube packing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packing method in which a known packing method for a flexible long tube in a roll is improved, the binding condition of the roll is not loosened even when the long tube is taken out from the rolled condition, the surface of the long tube is not exposed outside, and the surface of the long tube is not damaged. <P>SOLUTION: The long tube packing method comprises the first step of roll-winding a flexible long tube, the second step of winding a heat-shrinkable resin film in the circumferential direction of the roll, the third step of spirally winding the heat-shrinkable resin film, and the fourth step of increasing the winding force of the films with the heat. In Fig., reference numeral 1 denotes a polybutene tube, 2 denotes a roll, 3, 4 denote polyethylene film, 5 denotes an overlap portion of the polyethylene film 4, 6 denotes hot air, and 7 denotes a cut section. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an improvement in a method for packing a flexible long tubular material in a roll shape. More specifically, the roll winding is performed even when a long tubular material is taken out from a rolled product. It provides a packing method that does not break apart.

  In the roll packaging method of a normal flexible long tube material, the long tube material cut | disconnected to about 60-120m is wound up in roll shape, and 3-4 places rolled up Was tied with a tie and placed in a vinyl bag or in a cardboard box.

  The biggest drawback of such a conventional packing method is that when opening, it is necessary to unwind the binding string and take out the long tube material. Therefore, when the binding string is unwound, the roll winding diameter is increased and broken. The handling after that was very inconvenient. In particular, this tendency is large when there is almost no bending flaw of the long tubular material, and there are many difficult cases even when trying to rebind and put it in the original bag or box. Moreover, since there is no handle for carrying these bags and boxes, they are inconvenient for transportation.

  And if you take out the long tube material and put it in a roll-wrapped state, the surface of the long tube material will be scratched because it will be dragged and rubbed with surrounding members especially when carrying it at the construction site. There was a risk of inconvenience in subsequent use. That is, in recent years, there are many cases in which long pipe materials are used as pipes for water supply and hot water supply, but this is mainly done by applying an O-ring to the surface of the long pipe material to stop water. If the surface of the long pipe is damaged, it will lead to water leakage.

  The present invention is intended to solve the above-mentioned problems, and even when the long tubular material is taken out after rolling the long tubular material, the binding state does not collapse, and the surface of the long tubular material appears outside. Even if it is dragged, the surface of the long tubular material is not damaged, and an extremely excellent packing method is provided.

  The gist of the solution means of the present invention is a first step of rolling a flexible long tubular material, a second step of winding a heat-shrinkable resin film in the circumferential direction of the roll winding, It is a packing method for a long tubular material comprising a third step of spirally winding a heat-shrinkable resin film with respect to roll winding, and a fourth step of increasing the binding force between the films by applying heat.

  In the present invention, the resin film is in a roll-wrapped package of a long tubular material, and the resin film is in a state where the binding force is strongly maintained by heat shrinkage, and in this state, a cut opening is formed in the roll-wrapped film. In particular, by forming the cutting opening inside the roll winding, it becomes easy to take out the long tube material, and the winding state of the long tube material remains as it is, and the packaging method is extremely convenient for storing and transporting etc. Was able to provide.

  The packing method of the present invention can be applied to all flexible long pipe materials, and those excellent in this method are less likely to bend or are not preferred to bend. It is particularly preferred for use in packaging. Conventionally, when these long pipe materials are packed in a roll shape, the roll diameter is directly increased or broken when the binding is released. Such a phenomenon does not occur, and the remaining diameter of the long tubular material is always maintained at the same roll diameter. Moreover, since the long tubular material is covered with a film, care should be taken even during storage and transportation. It does not have to be, and exhibits extremely excellent effects on handling at the actual construction site.

  The long tubular material is not particularly limited and can be a resin tube or a rubber tube. Particularly suitable for use on pipes that stop water on the outer surface with O-rings (for example, polybutene pipes used for water supply and hot water supply pipes) because they can be stored and transported without scratching the outer surface. It becomes.

  As the heat-shrinkable resin film used, for example, a film made of low density polyethylene, polypropylene, or vinyl chloride is preferable.

  In the second step, a plurality of resin films are preferably wound, and the rolled long tubular material is preferably completely wound in the circumferential direction. The winding in the second step is mainly for preventing the roll diameter from expanding.

  In the third step, the resin film is preferably wrapped in a spiral shape by overlapping the left and right width ends, mainly for strengthening and maintaining the binding force. The width of the overlap wrap is preferably about 20 to 40% of the entire width. If the width of the overlap wrap is too small, the binding force is weakened, and if it is too large, the material is wasted.

  In the fourth step, heat is applied to the wound resin film to increase the binding force between the films. However, the treatment means is optional, and it is possible to apply hot air or to dive in the tunnel equipped with a heater. To process. It goes without saying that the heating temperature and the heating time vary depending on the type of resin film used and the number of windings of the resin film. In any case, it is important to increase the binding force between the laminated resin films by heating the resin films, and it is not necessary to melt and stick together. Then, heat shrinkage is promoted to the resin film by applying heat, and in some cases, the resin film is crystallized, and the binding force is strengthened and maintained so that the roll does not break. Normally, heat is applied to the wound resin film after the completion of the third step, but the binding force can be further improved by applying heat for each step.

  As a fifth step, a cutting opening (usually a slit shape) is formed in the circumferential direction in a resin film bonded to a portion other than the outer peripheral surface of the roll winding, preferably the portion having the smallest diameter on the inner peripheral side. Therefore, an appropriate length is pulled out from the cutting opening and cut for use. This cutting port is cut with an arbitrary jig. Even in the cutting of the resin film, since the resin films have a binding force as described above, the roll diameter does not increase and the roll winding shape is still maintained. . It is also possible to prepare a string-like cut-off in advance in the resin film.

  In addition, the packaging method of the resin pipe which added the process of winding a buffer layer between the 2nd process and the 3rd process is good. Examples of the buffer layer include an air cap film, a soft foam sheet, and a cardboard paper. In the packing method of the present invention, since the rolled long tube material is covered with a resin film, rubbing and scratches can be sufficiently prevented. It is intended to withstand the impact of dropping during transportation or transportation.

  Of course, several layers of the second step and the third step may be performed alternately.

FIG. 1 is a diagram showing an outline of the packing method of the present invention.
A polybutene pipe (1) having an outer diameter of 14 mm used for piping for water supply and hot water supply was cut by 60 m and rolled into a donut shape (2) to an outer diameter of 1 m.

  Next, the polyethylene film (3) was wound about 3 times in the outer peripheral direction of the roll winding (2). The polyethylene film (3) used had a width sufficient to cover the entire circumference of the roll winding (2), and was wound along the side surface and the inner peripheral side of the roll winding (2).

  Similarly, the polyethylene film (4) was spirally wound about two rounds in a state where the width edge was overlapped by about 30 mm (5).

  Thereafter, hot air (6) was blown almost evenly to soften the polyethylene films (3) and (4) to give each other a binding force. It is not necessary to melt the film as long as it is in a state where it cannot be easily peeled off in close contact.

  After natural cooling, a roll (slit) (7) is formed in the inner film (3), (4) of the roll shape, and the tip of the polybutene tube (1) is pulled out and cut into a predetermined length. did. Since the remaining roll (2) is covered with the films (3) and (4), the roll roll (2) is not expanded in diameter. There wasn't any break.

  The present invention is as described above, and in order to maintain the donut-shaped packing form surrounded by the film even after the long tubular material wound in roll is opened, it can be stored, carried and used at the work site. It is excellent in handling, and has a great feature that the surface of the long tubular material is not damaged, and its utility is extremely high.

FIG. 1 is a diagram showing an outline of the packing method of the present invention.

Explanation of symbols

1. Polybutene tube 2. Roll winding 3. Polyethylene film 4. Polyethylene film 5. Overwrap portion of polyethylene film 6. Hot air 7. Cutting port

Claims (5)

  The first step of rolling a flexible long tube material in a roll, the second step of winding a heat-shrinkable resin film in the circumferential direction of the roll winding, and heat shrinkage against the roll winding A long tube material packing method comprising: a third step of winding a flexible resin film in a spiral shape; and a fourth step of applying heat to increase the binding force between the films.   The long pipe material packing method according to claim 1, wherein a plurality of resin films are wound in the second step.   The long pipe material packing method according to claim 1, wherein in the third step, the resin film is wrapped by overlapping the left and right width ends.   The long tube material packing method according to claim 1, wherein, as the fifth step, a cutting opening is formed inside the roll winding. The long tube material packing method according to claim 1, wherein a step of winding the buffer layer is added between the second step and the third step.

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