JPS638788Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to Mizuhiki. More specifically, it relates to Mizuhiki that has excellent metallic luster, workability and shape retention.

BACKGROUND ART Mizuhiki, which is made by winding slit threads of metal-deposited plastic film or slit threads of metal foil around a twisted paper core, has been known.

However, although the slit threads of metal-deposited plastic film have excellent metallic luster, they are highly repellent, so mizuhiki using this thread has the drawback of poor workability and shape retention. For example, when working with mizuhiki, it is often rolled into a spiral shape, but it is easy to wind it into a spiral shape without causing deformation or collapse, and the resulting spiral can be packaged. It is required that the initial shape be maintained without deformation or collapse during transportation, transportation, or other handling. However, in mizuhiki using slit threads of metallized plastic film, it is difficult to satisfy these requirements due to the repellency of the slit threads.

On the other hand, the repulsion of slit threads made of metal foil is lower than that of slit threads made from metallized plastic film, so mizuhiki using this thread is relatively superior in terms of workability and shape retention, but it is not sufficient. However, it has the disadvantage that it has lower strength and has a lower metallic luster than mizuhiki, which uses slit threads of metal-deposited plastic film.

In view of the above points, the present invention provides a mizuhiki with excellent metallic luster, workability and shape retention.

In other words, the present invention has a slit thread made by laminating a base film of metallized polyester film, which is a polyester film with a thickness of 5 to 25 μm, on one side of an aluminum foil with a thickness of 4 to 10 μm, and a backing paper laminated on the other side. This invention relates to a mizuhiki made by integrally wrapping a metal-deposited polyester film around a twisted paper core via an adhesive layer with the side of the metal-deposited polyester film on the outside.

In the mizuhiki of the present invention, the slit thread that is wound around the paper twist core is made by laminating a metal-deposited polyester film of a specific thickness on an aluminum foil of a specific thickness. The strength of the
In addition, since the repulsion of the metallized polyester film is reduced by the aluminum foil, the repulsion is small, and therefore the workability and shape retention are excellent. Moreover, since the outer surface of the wound slit yarn is made of metallized polyester film, it has excellent metallic luster.

In this way, the present invention uses the novel idea of using a laminated metal-deposited polyester film of a specific thickness on an aluminum foil of a specific thickness for the slit thread, eliminating the drawbacks of conventional mizuhiki and creating a metallic luster. We succeeded in providing a mizuhiki with excellent workability and shape retention.

Next, the present invention will be explained based on the drawings.

FIG. 1 is a partial perspective view showing an embodiment of the mizuhiki of the present invention. In FIG. 1, 1 is a paper twist core, and a slit thread 3 is attached to the paper twist core 1 through an adhesive layer 2.
are closely wound with no gaps between each winding. The slit thread 3 is made by laminating a metallized polyester film 5 on one side of an aluminum foil 4 via an adhesive layer 6, as shown in FIG.
It is a slit yarn with a backing paper 7 laminated on the other side via an adhesive layer 8.

As the aluminum foil 4, an ordinary aluminum foil obtained by rolling aluminum and having a thickness of 4 to 10 microns is used.

As the metal-deposited polyester film 5, any film having a normal layer structure can be used. For example, as shown in FIG. 2, a polyester film 10 on which a metal vapor deposition layer 11 is formed is used. The polyester film 10 used has a thickness of 5 to 25 microns as described above. The metal vapor deposition layer 11 is made of a single metal such as aluminum, silver, gold, chromium, nickel, zinc, or tin, or an alloy of two or more of these metals, using a method such as a vacuum vapor deposition method, a sputtering method, or an ion plating method. A material that has been vapor-deposited is used, and its thickness is approximately 0.03 to 0.15 μm.

The metal vapor-deposited polyester film 5
As shown in the figure, it is usually bonded to aluminum foil 4 with the metal vapor deposited layer 11 side facing inside.

The metal-deposited polyester film 5 used includes a transparent resin coating layer 12 as a protective layer provided on the metal-deposited layer 11 of the metal-deposited polyester film. This thing is
As shown in FIG. 3, the resin coating layer 1 is usually
The aluminum foil 4 is bonded with the aluminum foil 2 facing outward. When the resin coat layer 12 is colored with a transparent colorant, metallic luster in various colors not limited to the metallic luster inherent to vapor-deposited metals can be obtained. The material shown in FIG. 3 has a superior metallic luster than that shown in FIG. 2, and is therefore preferably used in the present invention.

A normal adhesive is used as the adhesive for the adhesive layer 6, but since both materials to be pasted are not breathable, an adhesive of the type that is applied, evaporates the solvent, and then heats and presses the adhesive is used. (For example, a two-component type polyurethane adhesive consisting of a polyol and an isocyanate) or a non-solvent type adhesive, such as a hot melt adhesive, is preferably used.

As the backing paper 7, Japanese paper or Western paper having a basis weight of about 6 to 30 g/cm ² is usually used. As the adhesive for the adhesive layer 8, a conventional adhesive is used. By laminating such backing papers 7, the adhesion when winding the slit yarn 3 around the paper twisted core 1 is improved, and high-quality water pulling is achieved.

The laminate of the aluminum foil 4, metallized polyester film 5, and backing paper 7 is slit to obtain slit threads 3 having a width of about 0.1 to 5 mm.

The slit thread 3 is wound onto the paper twisted core 1 via the adhesive layer 2 with the metal vapor-deposited polyester film 5 side facing outward, and is integrated. As the paper twist core 1, any paper twist core conventionally used for mizuhiki is used, and its thickness is about 0.5 to 2 mm.
The adhesive used for the adhesive layer 2 is also not particularly limited,
For example, emulsion adhesives such as vinyl acetate resins, acrylic resins, ethylene-vinyl acetate resins, and water-soluble adhesives such as polyvinyl alcohol and starch are used. The slit yarn 3 is normally wound closely together with no gaps between each winding, but if colored mizuhiki is used as the paper twist core 1, it may be wound with an appropriate interval between the windings.

In this way, a mizuhiki material with excellent metallic luster, workability and shape retention is obtained.

[Brief explanation of drawings]

FIG. 1 is a partial perspective view showing one embodiment of the mizuhiki of the present invention, and FIGS. 2 and 3 are schematic sectional views showing various aspects of the slit thread used in the present invention. Main symbols in the drawing: 1...Paper twisted core, 2...Adhesive layer, 3...Slit thread, 4...Aluminum foil,
5...Metalized polyester film, 7...Backing paper.

Claims (1)

[Scope of utility model registration request] A metallized polyester film, the base film of which is a polyester film with a thickness of 5 to 25 μm, is laminated on one side of an aluminum foil with a thickness of 4 to 10 μm.
Mizuhiki is made by wrapping a slit thread with a paper lining on the other side and wrapping it around a twisted paper core via an adhesive layer with the metallized polyester film on the outside.