JPS5941543Y2 - Labeled heat shrink plastic sleeve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat-shrinkable plastic sleeve, and particularly to a heat-shrinkable plastic sleeve that allows for identification.

In addition to covering plastic sheathed cables and electrical components with sleeves to protect their connections and external surfaces,
Identification signs such as manufacturing type, rating, etc. are often displayed,
Conventionally, the coating and the identification mark were made using separate means. For example, in the case of cable connection sleeves, markings were made on the sleeve surface by printing, etc., which resulted in a lot of waste, and furthermore, the identification mark could disappear due to wear, etc. There are many drawbacks.

The present invention has been developed in view of the above, and it is an object of the present invention to provide a heat-shrinkable plastic sleeve in which identification markings are provided in advance, and the identification marking surface is not exposed on the surface, so there is no need to worry about wear and tear.

Embodiments of the present invention will be described below with reference to the drawings in the case of a sleeve for a plastic sheathed cable.

In Figures 1 and 2, 2 is an outer layer made of a substantially transparent heat-shrinkable plastic tape, 1 is an inner layer made of an uncrosslinked plastic tape such as polyethylene or an ethylene copolymer, and 3 is an identification mark. The marking tape layer is interposed inside the two outer layers or directly above the inner layer 1, and the layers are integrated by heat fusion to form a heat-shrinkable plastic sleeve.

The sleeve is manufactured as follows.

The inner layer 1 is formed by winding, for example, an uncrosslinked polyethylene tape or ethylene copolymer tape around an upper body such as an iron pipe, and on top of this a substantially transparent tape made of, for example, a radiation crosslinked polyethylene copolymer. The outer layer 2 is formed by stretching and winding the plastic pipe in the longitudinal direction to form a heat-shrinkable plastic pipe.

In the configuration shown in FIG. 1, for example, a colored uncrosslinked or crosslinked marking tape 3 is wound spirally, preferably while being pulled while winding the outer layer tape.

In this case, it is better not to wrap the sleeve near both ends.

Further, in the one shown in FIG. 2, a marking tape 3 which is colored or has letters and symbols written on it is vertically attached in a spiral shape on the inner layer 1 before the outer layer 2 is applied.

The indicator tape may be provided in any position within the sleeve as long as it is visible from above the transparent outer layer.

As mentioned above, this marking tape 3 usually has the above-mentioned inner and outer layers 1.
A tape made of the same material as .

The reason why the marking tape is made of the same material as the plastic sleeve is to prevent gaps from forming in the sleeve when they are heated and fused together.

In this way, by heating the core body or heating the entire body from the outside, the inner and outer layers 1, 2 and the marking tape 3 are thermally fused and integrated, and after cooling, the core body is removed to form the heat-shrinkable plastic of the present invention. The sleeve is completed.

-The radiation crosslinked polyethylene or ethylene copolymer tape that forms the outer layer retains its heat-shrinkability even if it is wound and heated while applying tension in the longitudinal direction, so it is not heat-shrinkable. Since the properties are preserved within the tape, when heated during use, the tape will shrink in the longitudinal direction, and thus the sleeve will shrink in its radial direction.

Therefore, in order to use such a sleeve to cover the joint of a plastic sheathed cable 4 as shown in FIG. If the sleeve is pulled back to cover the connection part and both ends of the sleeve are heated, the inner layer 1, whose outer layer has been melted by heat shrinkage, is tightly fused to the cable sheath and the cable connection part can be covered and protected. Can be marked for identification.

Note that -1: In this case, it is preferable not to provide the indicator tape 3 at both ends of the sleeve so that the state of fusion between the sleeve and the cable sheath can be seen through.

In addition to the connection part of the cable mentioned above, this sleeve can also be used for
It can also be used in fields such as covering electrical parts and decoration.

As described above, the sleeve of the present invention can cover and protect cable connections, electrical parts, etc. in the same way as conventional heat-shrinkable plastic sleeves, and at the same time can also mark the identification of cables, electrical parts, etc.

In addition, in the sleeve of the present invention, the surface of the marking tape on which the identification mark is applied is not exposed on the outer surface of the sleeve, so that the identification mark does not disappear due to wear etc., and it is possible to provide a clear identification mark semi-permanently. be.

[Brief explanation of the drawing]

1 and 2 are partially sectional perspective views showing different embodiments of the present invention, and FIG. 3 is a partially sectional perspective view showing the state of use. 1 and 2...inner and outer layers of heat-shrinkable plastic pipe, 3...indication tape, 4...
····cable.

Claims (1)

[Scope of utility model registration request] In the heat-shrinkable plastic sleeve, a transparent plastic tape is placed between the tape layers of the tape layers constituting the sleeve or in the lowest layer of the transparent layer made of the same material as the material constituting the plastic sleeve. What is claimed is: 1. A heat-shrinkable plastic sleeve with a label, characterized in that the sleeve is heat-sealed together with an indicator tape layer having an identification mark interposed therebetween.