JPS5951064A - Method of packing flexible long-sized body wound article - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for packaging a flexible elongated body such as a flexible plastic tube.

Generally, flexible glass tubes and the like are formed by sequentially winding these elongated bodies into a ring shape with a desired diameter and forming multiple layers, and forming these 4-way rolled products ([ G1 As shown in Figure 1, wrap and wrap the product from the core hole to the outer periphery using 1154 paper tape or film 1, with the core hole completely loose, (ii) As shown in Figure Z, wrap the product The annular part extending from the core hole to the outer circumferential side is tied in advance with a binding cord 2 to maintain the shape of the bundle, and then stored and packaged in a container 3 such as a box or wooden box. (m) Third As shown in the figure, the rolled product t = b, which has been bound as described in (11) above, is placed in a shrinkable plastic film bag 4, and after the bag's ears 5 are sealed, it is heat-shrinked to obtain a folding body. It is packaged and handled using various methods such as .

In this case, 6 is a top-cut winding product.

However, such packaging bodies suffer from the following common drawbacks when the flexible elongated body of the PJ section is actually pulled out and used.

(b) It is necessary to disassemble the package, but in this case, see below (
(2) It is necessary to do this while taking into consideration the possibility that the long packaged product may collapse (the rolled product becomes disjointed), and the dismantling work takes a lot of hands.

(b) The winding tape in (1) above or the same (11)
) and 0**) and disassemble the packaging, the flexibility and elasticity of the wrapped long objects will cause the rolled items to collapse (9) where the rolled items fall apart. This not only causes trouble in subsequent handling, but also, especially in the case of a highly elastic tubular body, there is a risk of personal injury due to the end of the tubular body rebounding.

e→The above-mentioned products that use a single paper band and tier generally have poor storage properties, such as being unsuitable for outdoor storage and inconvenient storage after disassembling the packaging.

The inventors of the present invention have focused on this problem, and as a result of intensive studies, they have found that the present invention has not yet been completed.That is, the present inventors have found that the present invention has an elastic and flexible material such as a flexible plastic tube. A long body is sequentially wound in multiple layers in an annular shape with a desired diameter to form a strip-shaped rolled product, and a heat-shrinkable material having a width wider than the thickness of the strip-shaped rolled product is coated on the outer periphery of the strip-shaped rolled product. After covering the entire circumference of the plastic film or sheet with the given shrinkage direction aligned with the length direction of the elongated body and bonding both ends thereof, the film or sheet is heated to cause the film or sheet to shrink. A method for packaging a flexible elongated body product, characterized by:

Embodiments of the present invention will be described below with reference to the drawings.

A plastic corrugated tube 10 with a diameter of 30 fins and a length of 50 m was wound up in multiple layers in a circular shape so that the inner diameter was 350, the outer diameter was 600, and the width was 250 mm, and tied at 4 points on the circumference with binding strings 11. A rolled product 12 was obtained (FIG. 4).

A stretched polyethylene film 13 having a length of 2000 mm, a width of 5 QQa+, and a thickness of 100 μm, with the stretching direction being the length direction, is attached to the rolled product 12 with the stretching direction being the length direction. Cover the entire circumference according to the side, wrap around 101111 on both ends, and heat-seal the lapped part 1.
3' (Figure 5).

Next, the entire product was placed in a constant temperature bath at 200°C and left for about 1 minute.
No. 3 was heat-shrinked and tightly adhered to the outer periphery of the rolled product 12 and part of both sides (FIG. 6).

First, tie the above-mentioned binding string 11 into the obtained wrapped product package.
When the plastic corrugated tube 10 was cut and pulled out from the opening from the winding start end, that is, the core steel end 10', the core plastic corrugated tube 100 for the drawing operation did not lose its winding form at all. I was able to maintain it.

This is presumed to be due to an appropriate balance between the outward repulsive force caused by the 100 turns of the plastic corrugated tube and the inward shrinkage force caused by the heat shrinkage of the shrinkable polyethylene film 13.

There is no particular limitation on the material of the shrinkable film for packaging. As described above, these films may be in the form of a sheet, which is covered and then heat bonded at both ends, or may be a tube whose contraction direction is in the circumferential direction.

In particular, regarding the degree of width 1] relative to the thickness of the grip, the initial purpose can be achieved if the width covers at least the outer periphery of the rolled product 12 when the film contracts; It is especially desirable to have a width that almost covers the entire area.

Furthermore, the heat-shrinkable film 13 can be prepared by appropriately sealing the opening 13' on at least one side of the loquat-wound product 12 before shrinking, as shown in FIG. It is possible to obtain a packaged product in which this part is completely airtightly closed, which is very preferable for applications where such sealing properties are desired, for example, when storing the product outdoors with the 7-fold side stacked on top. .

Furthermore, if the core diameter of the rolled product 12 is large in elasticity, the thickness of the heat-shrinkable film or sheet 13 used may be increased, or polypropylene, vinyl chloride, or any of these may be used instead of the polyethylene. Care must be taken to select a material film or sheet with high strength, such as a cross-linked product.

As is clear from the following explanation and the examples below, the flexible elongate packaged product obtained by the present invention has the ability to absorb both the outward repulsive force in the winding direction of the elongate body and the packaging film. By being able to appropriately balance the inward contraction force due to heat contraction, etc.
For example, during use, the elongated body can be taken out from the winding start end without losing its shape until the end, which has the effect of almost eliminating the above-mentioned problems.

The present invention will be specifically explained below with reference to Examples.

Example 1001 Iφ, 60 m long glass corrugated pipe was wound in multiple layers into a ring so that the inner diameter of the inner diameter was 1000 mm, the outer diameter of the outer diameter was 1600 mm, and the width was 50 Nm. A rolled product was obtained by tying the pieces together with string.

For this product, a cross-linked stretched polyethylene sheet with a length of 5,200 mm, a width of 1,100 mm, and a thickness of 0.5 mm, with the stretching direction being the length direction, was used. The wrapped product was wrapped around the entire outer periphery of the rolled product, and about 20 tuna were ramped at both ends, and the wrapped portion was heat-sealed.

Next, the entire product was placed in a constant temperature bath at 200°C and left for about 30 seconds, and the polyethylene film wrapped around the outer circumference of the rolled product contracted due to heat and adhered tightly to the entire outer periphery and side of the rolled product. I got what I wanted.

When the resulting bundled product package was first cut with its binding cord and the wrapped plastic corrugated tube was pulled out from the core steel end, the shape of the bundled product did not deform at all and the entire amount was pulled out. It was possible.

[Brief explanation of the drawing]

FIGS. 1 to 3 are perspective views showing a conventional packaging method for a rolled product, and FIGS. 4 to 6 are perspective views showing an embodiment of the present invention.
FIG. 7 is an explanatory diagram of another embodiment. 10... Long body, 6, 12... Wrapped product, 13...
・Heat-shrinkable film, 13'...Sealing part. Patent Applicant: Furukawa Electric Co., Ltd. Procedural Amendment Date: September 1, 1980 Director-General of the Patent Office: Mr. Kazuo Wakasugi 1, Indication of the Case 1981 Special Fraud Application No. 152765 2, Name of the Invention: Flexible Elongated Body Packaging method for rolled-up products 3, relationship with the case of the person making the amendment Patent Applicant (529) Furukawa Electric Co., Ltd. 5, Amendment order daily publication Showa year, month, day (voluntary) 6, Specification subject to amendment The scope of claims is amended as shown in Column 7 of the scope of claims, Contents of Amendment attached. 2. Scope of Claims (1) An elastic and flexible elongated body such as a flexible plastic tube is sequentially wound in multiple layers in a 1M shape with a desired diameter to form a bundle-shaped rolled product. 1. A heat-shrinkable plastic film or sheet of the thickness and width of the loquat-shaped rolled product is placed around the entire circumference of the circular rolled product, with the applied shrinkage direction matching the longitudinal direction of the long body. 1. A method for packaging a flexible elongated loquat-wound product, which comprises covering the film or sheet over the length of the film or sheet, adhering both ends of the film or sheet, and then heating the film or sheet to shrink the film or sheet. (2) As the heat-shrinkable film or sheet, a film or sheet with a width of 3 sides of loquat is used; The packaging method described in the preceding item (1) characterized by:

Claims (1)

[Scope of Claims] (11) Sequentially winding an elastic and flexible elongate body such as a flexible glass tube in multiple layers in an annular shape of a desired diameter forms a band-shaped wound product, A heat-shrinkable plastic film or sheet having a width equal to the thickness of the rolled product is placed around the outer circumference of the rolled product in a shape such that the direction of shrinkage coincides with the length direction of the long product. A method for packaging a flexible elongated body product, the method comprising: covering the length of the film or sheet, bonding both ends thereof, and then heating the film or sheet to shrink the film or sheet. (2) The heat-shrinkable film or The packaging method according to the preceding item (1), characterized in that a film or sheet '2 with a width that covers three sides of the bundle is used as the sheet, and adhesive sealing is performed on an example of the rolled product in the shape of a bundle to be packaged prior to the heat shrinkage. .