KR200394625Y1 - Low Volatile Organic Compounds Decoration Sheet - Google Patents

Abstract

The present invention discloses a decorative sheet including a transfer printing layer on which a water-soluble ink having a low generation of volatile organic compounds is transferred to a decorative sheet surface, and a multi-layer decorative sheet using a water-soluble ink further comprising a transfer surface treatment layer for protecting the same. do.

In order to manufacture a decorative sheet with reduced generation of volatile organic compounds of the present invention, a transfer sheet formed by printing a water-soluble ink on a PET transfer film may be transferred to a PVC print film, and more preferably, a surface treatment is first performed on a PET transfer film. When the transfer sheet produced by coating the layer and printing a water-soluble ink on the upper portion to form a printing layer having a desired print pattern on the upper part of the PVC printing film, the transferred surface treatment layer is located at the top of the product to separate A multilayer decorative sheet is produced which does not require a transparent layer lamination process.

In this way, the present invention is coated with a water-soluble ink on the transfer film to significantly reduce the amount of volatile organic compounds generated to create a harmless indoor environment, it is possible to produce a beneficial decorative sheet less volatile organic compounds generated even after a long time And, there is a useful effect that can produce a variety of decorative sheets to suit the taste desired by the user.

Description

Multi-layered Decorative Sheet Using Water-Soluble Inks {Low Volatile Organic Compounds Decoration Sheet}

The present invention relates to a multi-layered decorative sheet using a water-soluble ink, and more particularly, to a multi-layered decorative sheet using a water-soluble ink that transfers the water-soluble ink to the surface of the decorative sheet to reduce the generation of volatile organic compounds to create a harmless indoor environment. It is about a sheet.

As is well known, the surface finishing material refers to a finishing material that protects the material and expresses the appearance of the decorative sheet in various colors and textures, and is particularly used as a material for decorating interior surfaces of building materials, furniture, and desks.

These surface finishes are manufactured by painting and laminating (Laminating) method, the laminating film (Laminating Film) has an adhesive type and adhesive type, the double adhesive type can be divided into a general sheet and a flameproof sheet, depending on the intended use, Depending on the material used, it can be divided into paper sheet and PVC decorative sheet.

The PVC decorative sheet has a limitation in that it is a relatively artificial material compared to the paper sheet, but mechanical properties such as tensile and tear strength, chemical resistance, stain resistance, etc. are superior to other materials and are used as the most substrates in the adhesive sheet. have.

The PVC decorative sheet is mainly printed with a gravure printing method using an ink containing an organic solvent in order to give a variety of effects on the appearance and then laminated the transparent film. At this time, the organic solvent used as a raw material has a problem that the transition phenomenon (MIGRATION) occurs as time passes and is released through the product surface to contaminate the indoor air.

In order to solve this problem, the printing technology to use eco-friendly water-soluble ink without organic solvent is actively studied in wallpaper and other building materials, but in the case of PVC decorative sheet, water-based ink is applied to the PVC material itself. Drying causes deformation of the print film due to the low glass transition temperature (Tg) of PVC, and it is difficult to dry the water-soluble ink because the thickness of the printing layer is thin. Therefore, the water-soluble ink is not applied to the PVC decorative sheet. There was a problem.

The present invention has been made to solve the problems described above, the object of the present invention is a decorative sheet including a transfer printing layer on which a water-soluble ink is transferred to a transfer film and a transfer surface treatment layer for protecting it is further formed The present invention provides a multi-layered decorative sheet to which a water-soluble ink which significantly reduces the generation of volatile organic compounds by manufacturing the decorative sheet is applied.

In order to achieve the above object, the present invention can be produced by transferring a transfer sheet formed by printing a water-soluble ink on a PET transfer film 3 to a PVC print film 4, and more preferably, a PET transfer film 3 The transfer sheet produced by coating the surface treatment layer 1 on the first surface, and then printing a water-soluble ink on the upper portion to form a printing layer 2 having a desired printed pattern, is transferred to the upper portion of the PVC printing film 4, Since the surface treatment layer 1 is located at the top of the product, a multi-layer decorative sheet using a water-soluble ink that does not require a separate transparent layer 7 lamination process is manufactured.

The surface treatment agent used for the surface treatment layer 1 is an aqueous urethane or an aqueous acrylic type, and the coating thickness of the surface treatment agent is preferably 1 μm to 50 μm. If the coating thickness is less than 1㎛ surface treatment effects such as scratch resistance and chemical resistance is insufficient, if the coating thickness exceeds 50㎛ there is a problem that the drying speed is slow and workability is not good.

In addition, the water-soluble ink should have good adhesion with the PET transfer film 3, should not affect the physical properties of the surface treatment agent coated on the surface of the PET transfer film 3, and should not generate volatile organic compounds after drying. In addition, the transfer film 3 used is a polyethylene terephthalate (PET) of 15 ~ 38㎛ less sheet deformation in high temperature hot air when drying the water-soluble ink, and dried between 40 ℃ ~ 100 ℃.

Hereinafter, described in detail with reference to the accompanying drawings of the present invention.

As an embodiment according to the present invention, as shown in Figure 1, the transfer paper is prepared by forming a printing layer (2) to which the water-soluble ink is applied on the upper surface of the PET transfer film (3). The method of printing the printed layer 2 on the PET transfer film 3 uses a roll coating and a gravure printing method. At this time, the printing ink is used that does not generate volatile organic compounds after drying. The printing ink may be an acrylic type or urethane type water-soluble ink, and the water-soluble ink that can be used is not limited thereto. The composition of the acrylic type water-soluble ink is, for example, 9 to 40% by weight of an acrylic copolymer having a polymerization degree of 100,000 or more, 30 to 90% by weight of water, and 1 to 30% by weight of a pigment of a desired color, mixed and applied by a high speed mixer. can do.

When manufacturing the transfer paper, first, a water-soluble ink is immersed in a gravure roll having a desired pattern engraved on the PET transfer film 3, and then dried by hot air at 80 ° C. to 100 ° C. to form a transfer paper on which the print layer 2 is formed. Manufacture.

The transfer paper thus prepared is thermally transferred to the upper surface of the PVC print film 4, and the transfer method is thermally transferred by applying 40 ° C. to 100 ° C. heat to the PET transfer paper through a heating roll or a heater. Thus, as shown in Figure 3 to prepare a decorative sheet to which the water-soluble ink of the present invention composed of the transfer printing layer (2a) and the printing film (4).

In this case, the print film 4 is rolled using a calendar or a sheet manufactured by extrusion using a die die.

The printing film 4 is, for example, 12 to 90% by weight of a PVC straight resin with a polymerization degree of 800 to 1000, 5 to 30% by weight of a plasticizer, 1 to 3% by weight of a stabilizer, 2 to 20% by weight of a filler, and 1 to 15 of titanium oxide. Weigh 1% to 20% by weight of the pigment that represents the desired color and mix for 5 to 20 minutes in a mixer with a high speed impeller, knead in a BANBURY MIXER or EXTRUDER, and roll in a calendar The sheet can be obtained by machining or extrusion on a T-die. The plasticizer is used alone or mixed with a phthalate-based or epoxy-based plasticizer, the stabilizer is a composite stabilizer of cadmium-barium-zinc-based or barium-zinc-based, the filler is a filler calcium carbonate coated with a particle size of 1㎛ Or silica.

As an embodiment according to the present invention, the transfer paper is prepared by continuously forming the surface treatment layer 1 and the printing layer 2 to which the water-soluble ink is applied, as shown in FIG. 2.

The method of printing the surface treatment layer (1) and the print layer (2) on the PET transfer film (3) uses roll coating and gravure printing. At this time, the surface treatment agent and gravure printing ink used are those that do not generate volatile organic compounds after drying. As such a surface treating agent, there may be used an aqueous urethane or an aqueous acrylic type surface treating agent, and the printing ink may be an acrylic type or a urethane type water-soluble ink, and the usable water-soluble ink is not limited thereto. The composition of the acrylic type water-soluble ink is, for example, 9 to 40% by weight of an acrylic copolymer having a polymerization degree of 100,000 or more, 30 to 90% by weight of water, and 1 to 30% by weight of a pigment of a desired color, mixed and applied by a high speed mixer. can do.

When manufacturing the transfer paper, first, a surface coating agent (Roll) coated on the PET transfer film (3) to dry the surface treatment layer (1) and then printed with a water-soluble ink on the gravure roll engraved with the desired pattern 80 It is made to dry with hot air of (degree. C.-100.degree. C.) to manufacture a transfer sheet on which the print layer (2) is formed.

The transfer paper thus prepared is thermally transferred to the upper surface of the PVC print film 4, and the transfer method is thermally transferred by applying 40 ° C. to 100 ° C. heat to the PET transfer paper through a heating roll or a heater. In this manner, as shown in FIG. 4, the decorative sheet to which the water-soluble ink of the present invention, which is composed of the transfer surface treatment layer 1a, the transfer printing layer 2a, and the print film 4, is transferred.

In this case, the print film 4 is rolled using a calendar or a sheet manufactured by extrusion using a die die.

The printing film 4 is, for example, 12 to 90% by weight of a PVC straight resin with a polymerization degree of 800 to 1000, 5 to 30% by weight of a plasticizer, 1 to 3% by weight of a stabilizer, 2 to 20% by weight of a filler, and 1 to 15 of titanium oxide. Weigh 1% to 20% by weight of the pigment that represents the desired color and mix for 5 to 20 minutes in a mixer with a high speed impeller, knead in a BANBURY MIXER or EXTRUDER, and roll in a calendar The sheet can be obtained by machining or extrusion on a T-die. The plasticizer is used alone or mixed with a phthalate-based or epoxy-based plasticizer, the stabilizer is a composite stabilizer of cadmium-barium-zinc-based or barium-zinc-based, the filler is a filler calcium carbonate coated with a particle size of 1㎛ Or silica.

Various known layers may be further stacked on the decorative sheet configured as described above. For example, as shown in FIG. 5, a known transparent layer 7 may be stacked on the transfer printing layer 2a, or in FIG. 6. As described above, a pressure-sensitive adhesive decorative sheet having a pressure-sensitive adhesive layer 5 made of a pressure-sensitive adhesive layer 5 laminated on the lower surface of the print film 4 and a release paper 6 protecting the pressure-sensitive adhesive layer 5 attached thereto may be manufactured.

Hereinafter, the present invention will be described in detail through examples, and the contents of the present invention are not limited to the following examples.

<Example>

A Specimen Preparation (Comparative Example)

In a blender with a high-speed impeller, 70% by weight of a PVC straight resin having a degree of polymerization of 1000, 25% by weight of dioctylphthalate (DOP), 2% by weight of an epoxy plasticizer (Epoxidized Soybean Oil), and 3% by weight of a barium-zinc stabilizer are used. 0.10mm transparent film that was mixed for 20 minutes and kneaded in a BANBURY MIXER or an extruder and rolled in a calendar,

60% by weight of a PVC straight resin having a degree of polymerization of 1000, 20% by weight of dioctylphthalate (DOP), 2% by weight of epoxy based plasticizer (Epoxidized Soybean Oil), 2% by weight of cadmium-barium-zinc-based stabilizer, 10% by weight of calcium carbonate, oxidation 4 weight% of titanium and 2 weight% of pigment are mixed and mixed in a mixer with a high speed impeller for 20 minutes, kneaded in a BANBURY MIXER or an extruder, and then rolled in a calender and gravure oil ink printing is applied on the upper part thereof. 0.10mm printing film (4) to give a decorative effect by using to prepare a semi-finished sheet by forward plywood under thermal conditions of 180 ℃ through a thermal plywood machine.

B Specimen Manufacturing

After coating with 25㎛ PET transfer film (3) with 10㎛ of water-soluble urethane surface treatment agent (BonCoat 100, Shinbon Industries), print water-soluble ink (Penn Color Co., Ltd. Water Base Ink Series) in the desired shape and dry it Transfer paper was prepared.

60% by weight of a PVC straight resin having a degree of polymerization of 1000, 15% by weight of dioctylphthalate (DOP), 2% by weight of an epoxy plasticizer (Epoxidized Soybean Oil), 3% by weight of cadmium-barium-zinc stabilizer, 10% by weight of calcium carbonate, and oxidation 5 weight% of titanium and 5 weight% of pigment were mixed and mixed for 20 minutes in a mixer with a high speed impeller to prepare 0.15 mm printed film 4 kneaded in a BANBURY MIXER or an extruder.

After the semi-finished product is manufactured, the surface treating agent 1 and the printing layer 2 are transferred to the printing film 4 while applying a heat of 80 ° C. to the transfer paper in the paper machine.

A and B specimens prepared above were compared with Table 1 below.

Intensity of Volatile Organic Compounds division TVOCs (mg / ㎡.h) 1 day 3 days 5 days 7 days 28 days A 0.82 0.56 0.38 0.31 0.19 B 0.19 0.08 0.07 0.06 0.05

1) Test Method: Small Chamber Method (KS A 1107-8) ASTM 5116-90

As such, the present invention significantly reduces the generation of volatile organic compounds, which is pointed out as a weak point of the PVC decorative sheet, and thus obtains an eco-friendly PVC adhesive sheet having a low generation of volatile organic compounds over time.

The present invention is coated with a water-soluble ink on the transfer paper and transferred to the printing film, thereby significantly reducing the amount of volatile organic compounds generated to create a harmless indoor environment, as well as beneficial decorative sheet less volatile organic compounds generated even after a long time It can be manufactured, there is a useful effect that can manufacture a variety of decorative sheets according to the taste required by the user.

1 is a cross-sectional view of the transfer paper consisting of a printing layer, a transfer film according to the present invention.

Figure 2 is a cross-sectional view of the transfer paper consisting of a printing layer, the surface treatment layer, the transfer film according to the present invention.

Figure 3 is a cross-sectional view of the decorative sheet consisting of a transfer printing layer, a printing film according to the present invention.

Figure 4 is a cross-sectional view of a decorative sheet consisting of a transfer surface treatment layer, a transfer printing layer, a printing film according to the present invention.

Figure 5 is a cross-sectional view of a decorative sheet consisting of a transparent layer, a transfer printing layer, a printing film according to the present invention.

Figure 6 is a cross-sectional view of a decorative sheet consisting of a transfer surface treatment layer, a transfer printing layer, a printing film, an adhesive layer, a release paper according to the present invention

*** Description of the symbols for the main parts of the drawings ***

1: surface treatment layer 1a: transfer surface treatment layer

2: printing layer 2a: transfer printing layer

3: transfer film 4: printing film

5: adhesion layer 6: release paper

7: transparent layer

Claims (4)

In the decorative sheet of the multilayer structure, A decorative sheet having a multilayer structure comprising a transfer printing layer (2a) on which a transfer sheet including a printing layer (2) on which a water-soluble ink is printed is transferred onto a PVC print film (4). The method of claim 1, The surface treatment layer 1 is further laminated between the transfer film 3 and the print layer 2 and transferred to the print film 4 to further deposit the transfer surface treatment layer 1a on the transfer print layer 2a. Multi-layer decorative sheet, characterized in that the. The method of claim 2, The surface treatment layer (1) is a decorative sheet of a multi-layer structure, characterized in that the coating made of an aqueous urethane or aqueous acrylic surface treatment agent in a thickness of 1㎛ ~ 50㎛. The method of claim 1, The water-soluble ink is a decorative sheet of a multilayer structure, characterized in that at least one selected from acrylic type or urethane type.