JP3087685U - Thermal adhesive laminate film - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To provide a heat-adhesive laminate film that can be hot-laminated with an elastic film. SOLUTION: This is a heat bonding laminated film for laminating a printing base material 5 on a printing ink 6. It comprises a process film 1, an elastic film 3 provided below the process film, and a thermal adhesive layer 4 applied to the lower portion of the elastic film. The process film and the stretchable film are weakly bonded. The stretchable film is, for example, soft acrylic or vinyl chloride.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a heat bonding laminated film.

[0002]

[Prior art]

 Lamination is a means of adding durability and aesthetics to easily consumed paper materials and the like. Printed material laminated with a plastic film has durability and aesthetics comparable to those of plastic, and is also cheaper than plastic in price.

[0003] A laminate obtained by laminating a laminate film with an adhesive is called "cold lamination", and a laminate obtained by laminating with a thermal adhesive is called "hot lamination". Cold laminate can transfer an adhesive due to its manufacturing method, and various types of films such as elastic films can be used. However, using an adhesive or the like increases the cost. Hot laminating, on the other hand, has a simpler manufacturing process and is less expensive to manufacture than cold laminate, but the film must be heat-resistant and dimensionally stable because it bonds while applying heat to melt the adhesive . For example, it is limited to a polyester film and an OPP film.

[0004]

[Problems to be solved by the invention]

 The laminate film to be attached to the printed matter may be a film having excellent dimensional stability, but some applications require stretchability depending on the application. If hot lamination can be performed with an elastic film, lamination can be performed at low cost, which is advantageous. The purpose of the present invention is to provide such a heat-adhesive laminate film.

[0005]

[Means for Solving the Problems]

 The present invention provides a heat-bonded laminated film for laminating printing ink on a printing substrate, comprising a process film, a stretchable film provided under the process film, and a stretchable film. It consists of a thermal adhesive layer applied to the lower part.

[0006]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the heat-adhesive laminate film F of the present invention comprises a process film 1, a release agent layer 2, an elastic laminate film 3, It is composed of an agent layer 4.

[0008] The process film 1 is a kind of a release film, and is a film attached to the surface of the paper or tape to which the pressure-sensitive adhesive is applied in order to protect the adhesive portion of the adhesive or the like. It is used by peeling it off when completed. Particularly, it refers to a film that is sandwiched between the films or between the resins during the molding process. The process film 1 needs to have heat resistance and dimensional stability enough to withstand thermal bonding, such as a polyester film sheet, a polyethylene terephthalate sheet, or a film substrate coated with silicone as a release agent. Film can be used.

The release agent 2 is preferably one that gives a weak adhesion of 100 g / 1 cm to 300 g / 1 cm. For example, known materials such as polyethylene wax, silicone oil, long-chain carboxylic acid, and long-chain carboxylic acid metal salts can be arbitrarily selected and used. These release agents can be used alone or in combination of two or more.

The laminate film 3 needs to be stretchable, and for example, a flexible acrylic, vinyl chloride or the like having a thickness of about 10 to 100 μm can be used. "Stretchable" means that it can flexibly cope with a curved surface or a certain uneven surface.

The material and thickness of the thermal adhesive 4 are not limited, and various resins such as EVA, EEA, EAA, polyethylene, polyester, ionomer, polyamide, and acrylic, and mixtures thereof, and tackifiers therefor. To which various additives such as a wax, an antiblocking agent, a slipping agent, an antioxidant and the like are added, and can be used in a wide range of thickness of about 10 to 100 μm. The thermal adhesive layer is coated, for example, by a melt extrusion method.

The printing substrate 5 on which the heat-adhesive laminate film F is laminated has a certain degree of elasticity, and includes paper, nonwoven fabric or woven fabric, plastic film, or a combination thereof. However, the present invention is not limited to this. Printing is performed on the printing substrate with the printing ink 6. Preferably, an adhesive layer 7 is provided on the back surface of the printing substrate 5 and is covered with a release paper 8 until immediately before use.

The method of using the heat-adhesive laminate film F of the present invention is as follows. First, a process film 1 having heat resistance and dimensional stability is weakly adhered to the upper surface of the extensible laminate film 3 with a mold release agent 2, and a thermal adhesive layer 4 is adhered to the lower surface of the laminate film 3. Coating.

Subsequently, the above-mentioned heat bonding laminate film F is heat bonded on the printing base material 5 on which the printing 6 has been applied. Thereafter, the process film 1 is peeled off to complete the process.

[0015]

[Effect of the invention]

 ADVANTAGE OF THE INVENTION According to this invention, the heat bonding laminated film by low cost and elastic hot lamination is obtained. This heat-adhesive laminate film can flexibly cope with stretchable printing substrates.

[Brief description of the drawings]

FIG. 1 is a sectional view of a heat-adhesive laminate film.

FIG. 2 is a cross-sectional view showing a state in which a heat-adhesive laminate film is laminated on a printing substrate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Process film 2 Release agent layer 4 Thermal adhesive layer 5 Printing base material 6 Printing ink 7 Adhesive layer 8 Release paper F Thermal adhesive laminated film

Claims (5)

[Utility model registration claims] 1. A heat-adhesive laminate film (F) for laminating a printing substrate (5) on a printing ink (6).
A process film (1), a stretchable film (3) provided below the process film, and a thermal adhesive layer (4) applied to a lower portion of the stretchable film. A heat-adhesive laminate film (F), characterized in that: 2. The heat-adhesive laminated film according to claim 1, wherein the process film (1) and the stretchable film (3) are weakly bonded. 3. The weak adhesion is 100 g / 1 cm to 300 g /
The heat-adhesive laminate film according to claim 2, which is 1 cm. 4. The heat-adhesive laminate film according to claim 1, wherein the stretchable film is soft acrylic or vinyl chloride. 5. A pressure-sensitive adhesive layer (7) on the back surface of a printing substrate (5).
The heat-adhesive laminate film according to any one of claims 1 to 4, wherein a release paper (8) is attached.