JPH0132108B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a tube made of a laminated sheet, which is composed of a combination of a layer of synthetic resin and a layer of aluminum foil.

[Conventional technology]

Tubes formed from laminated sheets of aluminum foil and synthetic resin layers have come to be used in large quantities because of their high resistance to contents, high gas barrier properties, ease of manufacture, and low cost. It's coming. Among the synthetic resin tubes that use this aluminum foil, there are some that use the metallic feel of aluminum foil as is for the decoration of the tube.

[Problem that the invention seeks to solve]

Although tubes that utilize the metallic feel of aluminum foil for decoration can exhibit a unique decorative effect, the decoration tends to be monotonous. For this reason, there is a growing desire for a tube that retains its metallic feel and has a richer variety of decorative features.

The present invention was devised to meet the above-mentioned needs, and aims to enhance the decorative effect of tubes by changing the metallic feel of aluminum foil to the metallic feel of other metals, and to improve the metallic feel of aluminum foil. The objective is to apply semi-permanent decorations such as letters or patterns by using a synthetic resin layer provided to give the metallic feel of other desired metals.

[Means to solve the problem]

Therefore, in a synthetic resin tube formed by overlapping and heat-welding both ends of the strip-shaped sheet body 2, the sheet body 2 is bonded to an inner layer 7 made of polyethylene resin, and an aluminum foil laminated and bonded to the upper surface of the inner layer 7. layer 6, a translucent or transparent decorative layer 5 made of an appropriate synthetic resin that is laminated and bonded to the top surface of the aluminum foil layer 6 and colored in a desired color; It was composed of an outer layer 4.

In addition, in order to further enhance the decorative effect, a decorative layer 5 is added.
A printed layer 8 with characters or patterns drawn on the upper surface may be provided.

[Function and Examples]

The operation and embodiments of the present invention will be described with reference to FIGS. 1 and 2.

From the appearance of the tube body 1, the decorative layer 5 is transparent or semi-transparent colored in a desired metal color, and the outer layer 4 is transparent, so that the shiny metallic feel of the aluminum foil layer 6 and the decorative layer 5 have a transparent or semi-transparent color. A sense of color that is mixed with other colors appears. For example, if the decorative layer 5 is colored transparent yellow, the color will mix with the color of the aluminum foil 6 to create a gold metallic feel.

The decorative layer 5 mainly determines the color of the "ground" of the tube body 1, and depending on the tube body 1, only the metallic feel created by the decoration layer 5 and the aluminum foil layer 6 may be sufficient. However, in many cases, it is required to draw letters or patterns on the exterior of the tube body 1.

Since the printed layer 8 provided for this purpose is formed by printing on the decorative layer 5, the bonding to the decorative layer 5 made of synthetic resin can be achieved extremely firmly and stably. Furthermore, since the entire surface is covered with the outer layer 4, it will not be damaged, peeled off, or even discolored.

In particular, since this kind of tube body 1 is made to be portable and is often carried and stored together with other containers and utensils, it comes into rather intense frictional contact with other articles and the surface printing However, in the case of the present invention, since the printing layer 8 is covered with the outer layer 4, the above-mentioned problem of deterioration of printing does not occur at all.

Generally, as shown in the drawings, the joining portions 3 at both side ends of the rolled and stacked sheet bodies 2 are made by attaching joining end pieces 9 to the side edges of the sheet bodies 2 located on the inside in advance. The overlapped side end portions having the joint end pieces 9 are welded together by pressure and heating to form the joint portion 3.

When molding this joint 3, the outer surface of the joint 3 is pressed by a mold having a mold surface along the outer peripheral surface of the tube body 1, so that the entire outer peripheral surface of the tube body 1 is smooth. It is effective for

〔Effect of the invention〕

As described above, by providing the decorative layer of the present invention, the advantages of the laminated synthetic resin tube using aluminum foil can be utilized as is, and the metallic feel of a wide variety of metals can be expressed.

In addition, since the printing layer is formed between the decorative layer and the outer layer, it will not be damaged, peeled off, or even discolored, and the decorative effect can be maintained for a long period of time. It has the following effects.

[Brief explanation of drawings]

FIG. 1 is an enlarged sectional view of a main part showing the basic configuration of the present invention, and FIG. 2 is an enlarged sectional view of a main part showing another embodiment. Explanation of symbols, 1: tube body, 2: sheet body,
3: Joint part, 4: Outer layer, 5: Decorative layer, 6: Aluminum foil, 7: Inner layer, 8: Printing layer, 9: Joining end piece.

Claims (1)

[Scope of Claims] 1. A synthetic resin tube formed by overlapping and heat-welding both side ends of a band-shaped sheet body 2, wherein the sheet body 2 is formed by forming an inner layer 7 made of polyethylene resin, and an inner layer 7 made of polyethylene resin. An aluminum foil layer 6 laminated and bonded on the upper surface; a semitransparent or transparent decorative layer 5 made of an appropriate synthetic resin and colored in a desired color and laminated and bonded on the upper surface of the aluminum foil layer 6; and the upper surface of the decorative layer 5. A synthetic resin tube consisting of a transparent polyethylene resin outer layer 4 laminated and bonded to a transparent polyethylene resin outer layer 4. 2 A synthetic resin tube formed by overlapping and heat-welding both ends of a band-shaped sheet body 2, wherein the sheet body 2 is laminated and bonded to an inner layer 7 made of polyethylene resin and the upper surface of the inner layer 7. an aluminum foil layer 6 formed on the top surface of the aluminum foil layer 6, a translucent or transparent decorative layer 5 made of an appropriate synthetic resin and colored in a desired color, and a suitable character or letter formed on the top surface of the decorative layer 5. A synthetic resin tube comprising a printed layer 8 with a pattern drawn thereon, and an outer layer 4 made of transparent polyethylene resin laminated and bonded to the upper surface of the printed layer 8 or the decorative layer 5.