KR20050106554A - Laminate layer film of protecting the suface of printing good - Google Patents

Abstract

A thin film layer coated with a PVC-based ink is formed on the other side of the release-treated PET film, and a small amount of paper is added to and mixed with a low-temperature heat-resistant thermoplastic resin that is melted at a low temperature under the coated thin film layer of PVC material and has adhesive strength. It relates to a surface protective laminate laminated film formed by forming a layer, and after laminating, the adhesive layer has a function of separating from the adherend protective layer laminated with the PET film, which is the carrier layer, and the PVC film thin layer and the adhesive layer adhered to the adherend. It is strongly adhered to the adherend and has excellent function to prevent the deterioration of the adherend, the heat resistance temperature of the surface layer is higher than the adhesive layer, and the soft PVC coated thin film layer is the surface layer of the protective layer, so that scratch resistance and bending resistance do not occur after lamination. As a general film, it is an ultra thin laminating film that cannot be heated laminating. When PET film is removed, the protective layer, which is a transition layer at the edge of the adherend, is precisely cut to obtain a laminated laminate for surface protection to obtain a clean laminate product.

Description

Lamination Film for Surface Protection {LAMINATE LAYER FILM OF PROTECTING THE SUFACE OF PRINTING GOOD}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminate film having a laminated structure having a carrier film laminated on the adherend for the purpose of preventing moisture permeation of the surface of the adherend such as printed matter, photographs, advertisements, documents, catalogs, and the like to maintain airtightness. Specifically, the protective layer (transition layer) laminated from the edge of the adherend after carrying the carrier film can be precisely cut and the protective layer surface is made of a flexible PVC coated thin film layer so that the scratch resistance and bending The surface protection laminate laminated film which can prevent long-term deterioration of the laminated product by preventing the penetration of moisture and airtightness due to the adhesion layer of the coating layer strongly adhered to the adherend, without bending defects. will be.

As a conventional laminated film for surface protection, a release paper and a synthetic film having a release treatment of a polyethylene solution in which polyethylene is dissolved in an organic solvent, such as naphtha xylene, as in Publication No. 1999-0066509, or a synthetic resin having a release property. After coating on the film (weak adhesive film) surface, the laminate film which completely evaporated the organic solvent through the drying process, when laminated to the adherend, the polyethylene thin film of the laminated laminate film is adhered to the surface of the adherend and the release sheet Is a film that is removed. Here, the poly ethylene film has a property of poor adhesiveness, so that the laminated film layer is lifted up on the adherend, so that the speed of deterioration of the laminated product is increased and the surface reflection is severe, which causes fatigue to the viewer. After cutting and lamination, the etchability of the polyethylene coating is also poor.

In addition, as a conventional laminate laminated film, a poly ethylene thin film film is formed on a PET film, and a laminate film obtained by corona discharge treatment of a poly ethylene film is coated with a poly ethylene layer having an adhesive layer on an adhered surface. Laminated to form a surface layer has the advantage that the surface damage for external impact is not easy, but due to the stiffness (stiffness) properties, there is a defect that lacks flexibility and foldability, and the poly ethylene coating layer adhered to the adherend surface As it is weak, the phenomenon of lifting occurs from the adherend, and the protection function of the adherend print surface is poor and the adhesion to the adherend is also poor due to the lack of moisture permeability and airtightness.

The present invention relates to a laminated laminated film that comprehensively solves the problems of the conventional laminate film, and as a carrier film (or linner film) using a PET film that is heat-resistant at high temperature, it is easy to work and secures dimensional stability. The surface layer of the complex protective layer is a PVC ink-coated thin film layer, which has excellent scratch resistance and no bending defects when bending, and reduces the reflectivity to reduce visual fatigue and at the same time exerts luxurious texture and low melting point on the adherend. It is melted at and forms an adhesive layer with an adhesive with strong adhesion to prevent moisture permeability and airtightness. By adding rosin to the adhesive, the coated film layer is precisely separated and cut at the edge of the adherend after lamination to obtain an excellent laminate product. Surface protective lamine It is to provide a laminate film.

The present invention can ensure easy workability and dimensional stability, reduce the reflectivity of the surface of the coating layer to reduce the fatigue of the viewer and at the same time exhibit a high-quality texture, excellent adhesion of the surface to the coating layer and the edge of the coating after lamination The protective layer film is precisely cut at and can be separated and removed together with the PET film, which is the carrier film, and the surface of the protective layer is about the composition of the laminated laminated film having excellent scratch resistance and no bending grooves during bending. On the other side of the PET film (2) having a surface (1) is formed a PVC ink coating thin film layer (3) having weak adhesion with the PET film, and the low temperature heat having the adhesive strength by melting at a low temperature on the PVC ink coating thin film layer (3) The surface protection laminate film formed by forming an adhesive layer 4 in which a small amount of rosin is added to a molten thermoplastic resin .

It is helpful to understand the technical composition, function and operation of the laminated laminate film, and when explaining the manufacturing method, first, the PVC ink (PVC solid content 20 to 25wt) with a gravure printing roller on the other surface of the PET film having a release treatment surface (1) %) Is coated and dried through a heat dryer to form a PVC thin layer, then hot melt thermoplastic resin on solvents such as toluene, methyl ketone (MEK), nucleic acid (HEXAN), and xylene (XYLENE). (Roll) is coated with a solution in which a small amount of Rosin is dissolved together with (resin selected from EVA, PET, PU, and acrylic), passed through a heat dryer to completely volatilize the solvent, and then wound on a winder. The manufacturing process ends.

In the above method, the release surface is treated with a silicone releasing agent, and the amount of 4 to 5 g / m 2 is suitably used, and the amount of feed added to the hot melt thermoplastic resin dissolved in the solvent ranges from 2 to 6% with respect to the hot melt thermoplastic resin. In some cases, a small amount of UV blocking agent may be added.

The most general specification of the surface protective laminate film produced in this way is to show that the thickness of the silicone release-treated PET film is around 10 microns and the PVC film thin film layer, which is the surface layer of the deposit, is an ultra-thin layer in the range of 3 to 5 microns. The adhesive layer adhered to the complex is a laminated laminate film laminated to about 10 microns.

The thickness of each film constituting the laminated protective film for surface protection according to the present invention is not limited to the above-mentioned standard, but may vary slightly depending on the type of deposit and the intended use.

When the action and function of the laminated laminated film obtained by the above method is first examined, PET film is a film having a softening point at around 200 ° C, which has strong tensile resistance and thermal stability, and supports means in a work process performed in a high temperature thermal atmosphere. It can safely carry out the function of the conveying means, and furthermore, the laminated laminate film does not increase during lamination, which ensures dimensional stability, and can be accurately removed and separated from the edge of the adherend with an extra protective film layer. The PVC film thin film layer that forms the film is an ultra-thin layer of 5㎛ or less, which is flexible and has scratch resistance and does not leave any bending defects (bump) during bending, and it has less reflectivity than polyethylene and gives a luxurious texture to laminated products. Not only does it have the benefit of reducing visual fatigue, PET film is weak and the adhesion is strongly bonded with the hot melt adhesive it should have a functionality that is easily separated from the PET film and then laminated.

In addition, the hot-melt thermoplastic resin adhesive layer does not exhibit adhesive strength at room temperature, but exhibits excellent adhesive strength when subjected to heat during lamination, thereby strongly adhering to the adherend, thereby preventing moisture permeability and airtightness while semi-permanently preventing alteration of the laminate product (printing surface). can do.

In addition, the hot-melt thermoplastic resin adhesive is dissolved in a solvent to form an adhesive layer, thereby improving the cutting property cut at the edge of the adherend after lamination, and furthermore, by adding a rosin having adhesiveness to the hot-melt thermoplastic resin adhesive It has a synergistic effect on cleavability.

The laminate film for surface protection according to the present invention is a laminate film that solves the problems exhibited in a laminate laminate film in which a polyethylene film or a PET film is a surface layer of a protective layer (film layer) of an adherend, thereby improving adhesion to the adherend. By greatly preventing the lifting phenomenon between the adherend and the laminated surface protective layer (film layer), the protection function to prevent the deterioration of the printed material is greatly improved.The scratch resistance after lamination is excellent, and it is necessary to separate cutting work on the laminated product. In addition, the carrier layer can be removed from the edge of the laminated product by cutting off the edge of the laminate without needing an extra protective layer attached to the edge of the laminated product or by removing part of the protective layer transferred to the adherend without damaging the coating layer. Clean laminator being removed together with the coating layer It is possible to obtain a product, and the surface layer of the deposit protection layer is made of PVC thin layer, so it has excellent scratch resistance, and it does not generate bending defects (chest) during bending and reduces the reflectivity, thereby reducing visual fatigue and quality texture. It can be said to be a laminated laminate film for surface protection, which greatly improves its quality in comprehensive functions.

1 is a cross-sectional view showing a laminated state of the laminate film according to the present invention.

Claims (3)

On the other side of the PET film having a release treatment surface, a PVC ink coating thin film layer having weak adhesion with PET film is formed, and a small amount of ROSIN is added to the low temperature heat-melting thermoplastic resin having an adhesive strength by melting at low temperature. A laminated protective film for surface protection in which a PET film is removed from an adherend protective layer after lamination with a laminated film formed by forming an adhesive layer. The method according to claim 1, Laminate film for surface protection, the PVC ink coating thin film layer is an ultra thin layer. The method according to claim 1, The surface protective laminate laminated film is a surface protective laminate laminated film in which the adhesive strength between the PET film and the PVC ink coated thin film layer is weaker than the adhesive strength between the PVC ink coated thin film layer and the adhesive layer.