KR20030032623A - Adhesive film for sign materials and marking film for automobiles using acrylic urethane resin and metalizing and manufacturing method for them - Google Patents

Abstract

PURPOSE: Provided is a marking sheet for a billboard and car marking with acryl urethane resin and metal deposition used which uses acryl urethane resin to form a surface layer so that it is used outdoors for long time without separate surface treatment. CONSTITUTION: The marking sheet for the billboard and car marking with acryl urethane resin and metal deposition used comprises the parts of: the surface layer(10) in which acryl resin and isocyanate hardening agent are mixed and set thermally; a metal deposition layer(20) which is placed at the lower part of the surface layer to show beautifying effect in appearance; a marking layer(30) which is placed at the lower part of the metal deposition layer to enable pictures or characters adhered to a location to be marked like glass, metal, acryl sheet or like; and a release paper layer(40) which is placed at the lower part of the marking layer.

Description

Adhesive film for sign materials and marking film for automobiles using acrylic urethane resin and metalizing and manufacturing method for them}

The present invention uses an acrylic urethane resin excellent in weatherability compared to the existing products used for indoor, indoor and outdoor advertising, signage material and vehicle marking, and manufacturing a pressure-sensitive adhesive sheet and the sheet that enable a beautiful advertising effect through metal deposition It is about a method.

Advertisement signboard is a material used for signboards and other advertisements, and it is a name or a pattern engraved on signboards of gas stations, banks, and commercial stores.Adhesive sheet for car marking is a material used for automobile stickers, container advertisements, etc. .

Conventionally, vinyl chloride resin is used for the materials used for indoor / outdoor advertising signboard sheets or vehicle marking adhesive sheets, which is relatively low in manufacturing cost and can be easily produced through computer cutting machines. Although it is widely used because of the convenience of the vinyl chloride resin, the product produced by the general calendering method has a disadvantage in that the gradation of color gradually decreases when exposed to the outdoors for a long time, and thus the advertising effect, that is, the visibility is inferior. In addition, various methods have been attempted to give a monotonous appearance effect, that is, a metallic effect (Metalscent), to the monotonous appearance color of the vinyl chloride resin. As one of such methods, a method of preparing a pearl pigment in a vinyl chloride resin layer is known. However, since the pearl pigment itself is expensive and there are many limitations in manufacturing, it has not received much attention. As another method, the product produced by adding the pigment to the adhesive layer has an advantage of expressing two colors when attached to the glass surface, but the appearance effect itself is not significantly different from the vinyl chloride resin. In addition, in the case of applying the fluorescent pigment to the vinyl chloride resin layer, it is relatively superior in terms of advertisement effect due to differentiation of appearance color, but it is difficult to maintain continuous advertisement effect due to the extremely short use period when used outdoors.

As described above, in order to compensate for the shortcomings of vinyl chloride resins conventionally used for indoor / outdoor advertising, signage materials, and vehicle marking, and to maintain ease of use such as computer cutting, in the present invention, first of all, By introducing acrylic urethane resin with excellent weatherability as a cover layer material, it is possible to use it for a long time without any surface treatment, and also to advertise it by differentiating it from the conventional product by depositing metal on the middle layer to give a beautiful effect. We want to maximize the effect. In addition, by adjusting the curing of the label layer for computer cutting workability and workability to ensure the proper elongation, and to secure the workability equivalent to the conventional vinyl chloride resin adhesive products with adhesive and release paper.

The adhesive signage for advertising signage and vehicle marking of the present invention can be produced in roll units and can be supplied at a relatively low cost because it is manufactured in large quantities in a short time.

1 is a cross-sectional view of an adhesive sheet according to the present invention.

Explanation of symbols on the main parts of the drawings

10: cover layer

20: metal deposition layer

30: adhesive layer

40: release paper layer

The adhesive sheet for advertisement signboard according to the present invention is composed of a cover layer, a metal deposition layer, an adhesive layer and a release paper from above. Referring to the present invention in more detail as follows.

In FIG. 1, the pressure-sensitive adhesive sheet for advertisement signboard according to the present invention includes a cover layer 10, a metal deposition layer 20, an adhesive layer 30, and a release paper layer 40.

The labeling layer is a layer cured by mixing an isocyanate-based curing agent with a solvent type acrylic resin, and mixing the pigment to enable various colors to prepare a labeling layer. In addition, the label layer may be prepared in two steps to remove appearance defects such as fine bubbles that may occur when the label layer is prepared.

Looking at the preparation of the label layer in more detail as follows.

First of all, the acrylic resin used in the present invention has 20-50 wt% of methyl methacrylate, 0-30 wt% of metal acrylate, 0-30 wt% of butyl acrylate, and ethyl acrylate. 10-30 wt% and the acrylate which has a hydroxyl group are 0-20 wt%, and 50-100% of solvents, such as toluene and ethyl acetate, are used and superpose | polymerizes the acrylic resin of 100,000-500,000.

The polymerized acrylic resin is obtained by adding 0.1 to 10.0 Phr to 100 Phr of the acrylic resin using an isocyanate curing agent and thermally curing to obtain necessary strength and elongation.

In addition, a small amount of additives such as antifoaming agents and leveling agents may be used for the polymerized resin for the purpose of improving coating properties, removing bubbles, and the like.

In order to give various colors, the pigment is milled with a separate resin and stirred with the polymerized acrylic resin to obtain the required color. At this time, the pigment content is added 0.01 to 0.50 wt% of the prepared acrylic resin.

The required pigment is added and the stirred raw material is continuously coated using a polyester film or polypropylene film having a thickness of 25 to 200 µm or a paper having a weight of 90 to 250 g / m 2 as a support. At this time, one side of the film or paper may be subjected to a separate release treatment to prepare the pressure-sensitive adhesive layer to facilitate the peeling.

The coating method may be comma coating, bar coating, roll coating, and the like, and the coating layer thickness after coating and drying is preferably 20 to 100 µm. Drying is set at a temperature at which isocyanate can be cured and a solvent is volatilized, but 80 to 140 ° C. is suitable in consideration of working speed and the like.

A metal deposition layer was introduced under the label layer to enable a beautiful effect of the appearance. In this case, gold, silver, aluminum, platinum, nickel, chromium, and the like may be used. The deposition methods include vacuum deposition, sputtering deposition, Electron beam vapor deposition and the like. The adhesive force can be increased by adjusting the reaction ratio of the acrylic resin and the curing agent of the label layer so as to enable interlayer adhesion between the label layer and the metal deposition layer, and a separate additive which increases the adhesion strength with the metal in the raw material prepared as the label layer can also be used. have. At this time, as the additive used, a vinyl chloride resin, for example, a vinyl chloride resin containing maleic anhydride or a vinyl chloride resin containing a hydroxyl group is generally used.

The pressure-sensitive adhesive layer is formed on the back surface of the substrate to serve to freely attach to the surface of the glass, metal, acrylic plate, etc. to be attached after cutting the picture or text. The pressure-sensitive adhesive used herein may be acrylic or rubber pressure-sensitive adhesives, and a small amount of curing agent is added to adjust the pressure-sensitive adhesive properties. The coating thickness of the pressure-sensitive adhesive is 20 ~ 80㎛, the release paper used at this time is polyethylene coated on one side or both sides, on one side weight 50 ~ 150g / ㎡ paper with a release treatment such as silicon, or thickness 25 ~ 100㎛ Use a polyester film or polypropylene film that has been released on one side.

Example

A polyester film having a thickness of 75 μm was used as a film serving as a support for preparing a label layer, and a release treatment was performed on one surface to facilitate peeling off of the film after the adhesive coating process was completed. Thickness after drying the composition made by mixing 4 weight part of isocyanate hardeners and 0.1 weight part of milled pigments to 100 weight part of acrylic resins whose methylmethacrylate is 25 weight% or more, solid content 30w%, and molecular weight 400,000 on this polyester film. Was coated with a comma to 60㎛ and heated for 3 minutes in a 120 ℃ dry oven to prepare a label layer.

A metal deposition layer was prepared by vacuum depositing aluminum under the label layer prepared by this process. The deposition was carried out at a high vacuum of 10 ^-4 Torr or less, and the work was performed at a speed of 200 m / min to have a thickness of 300 kPa.

The pressure-sensitive adhesive layer under the metal deposition layer is prepared in advance by coating polyethylene on the cross-section of a paper having a weight of 100 g / m 2, comma-coated to a thickness of 40 μm after drying on a silicone-treated release paper, and drying in a 100 ° C. drying oven. Prepared label layer and metal deposition layer were prepared by plywood at the rear of the oven.

The product produced by the above process is composed of a polyester film, a label layer, a metal deposition layer, a pressure-sensitive adhesive layer, a release paper from above, where a separate process of removing the polyester film used as a support when preparing the label layer Going through.

The adhesive signage sheet for advertising signboard manufactured according to the above embodiment has a structure as shown in the cross-sectional view in FIG.

As described above, the adhesive sheet for advertising signboard, interior and vehicle marking prepared according to the method of the present invention is superior in the advertisement effect because it is possible to give a beautiful appearance and unique color than the adhesive sheet made of conventional vinyl chloride resin You can expect. In addition, it has the convenience of using existing products such as computer cutting and construction properties, and it has excellent weather resistance, so that the change of physical properties such as discoloration can be maintained even when used outdoors for a long time, so that the advertisement effect can be maintained. In addition, since it can be manufactured in roll units, it can be produced at a relatively low manufacturing cost since it can be mass produced in a short time.

Claims (9)

Advertisement signage and vehicle marking adhesive sheet comprising a label layer is a layer of a cured acrylic resin mixed with an isocyanate-based curing agent and heat-cured, and having a metal layer below the label layer and a pressure-sensitive adhesive layer and a release paper layer below the metal layer. The advertising signboard and vehicle marking adhesive sheet according to claim 1, wherein the main component of the sheet to be the cover layer is a solvent type acrylic urethane resin. The adhesive sign for advertisement signage and vehicle marking according to claim 1, wherein the isocyanate curing agent is mixed in an amount of 0.1 to 10.0 Phr with respect to 100 Phr of the acrylic resin. The advertising signboard and vehicle marking adhesive sheet according to claim 1, wherein the pigment contains 0.01 to 0.50 wt% of the acrylic resin in the label layer. The adhesive sheet for advertising signage and vehicle marking according to claim 1, wherein the cover layer is one layer or two or more layers. According to claim 1, wherein the metal layer is made of any one selected from gold, silver, platinum, nickel, chromium, aluminum, advertising signboards and vehicle marking adhesive sheet. In preparing a pressure sensitive adhesive sheet used for advertisement signage, interior use, and vehicle marking, polymerizing an acrylic resin to prepare a cover layer, depositing a metal layer under the cover layer, and adhesive and release paper under the metal layer Forming and manufacturing a pressure-sensitive adhesive sheet comprising a step of peeling the film or paper used as a support during the preparation of the label layer. The method for producing a pressure-sensitive adhesive sheet according to claim 7, wherein the main component of the sheet to be the cover layer is a solvent type acrylic urethane resin. The method of claim 7, wherein the label layer is prepared by continuously coating a composition of a mixture of an isocyanate curing agent and a pigment in a polymerized acrylic resin using any one selected from a polyester film, a polypropylene film, and paper as a support. The manufacturing method of the adhesive sheet.