KR102113780B1 - high hardness decorative film and method of making the same - Google Patents

Abstract

The present invention, to increase the hardness of the surface portion of the product including the printed layer to prevent damage to the surface of the product, such as scratches and pressing due to impact from the outside, a high hardness decorative film for TOM decorative molding and its manufacturing method It is about.

Description

High hardness decorative film for TOM decorative molding and its manufacturing method {high hardness decorative film and method of making the same}

The present invention relates to a high hardness decorative film for TOM decorating molding and a method for manufacturing the same, and more specifically, by increasing the hardness of the surface of the product including the printing layer, the product surface portion such as scratches and pressing due to impact applied from the outside. It relates to a high hardness decorative film for TOM decorative molding to prevent damage and a method for manufacturing the same.

A large portion of interior and exterior materials for automobiles and home appliances are formed from synthetic resin moldings.

Since synthetic resin moldings are simply manufactured by an injection method or the like, they have excellent manufacturing efficiency, but have a problem of poor decorative effect due to monotonous color and poor texture.

For this reason, the surface of a synthetic resin molded article is disclosed in Korean Patent Registration No. 10-1287900 (Announcement date: July 19, 2013) as a 'decorative film' through a three-dimensional decoration overlay method (TOM). Wrapping decorating is performed.

At this time, TOM decorative molding is applied to the surface of synthetic resin moldings (internal and external materials of other materials are possible only) using compressed air in a vacuum mold, and preservation and protection of the decorative films by other decorative molding methods As it is excellent, damage can improve the feel and texture of the interior and exterior materials, as well as excellent moldability, so it can be widely applied to various types of interior and exterior materials, and the productivity can be improved to increase cost competitiveness.

On the other hand, in the conventional 'decorative film' (A '), the printing layer 20' and the top coating layer 40 'are sequentially formed on the base layer 10', as shown in FIG. As the patterns of various colors and shapes formed in (20 ') are exposed to the outside through the top coating layer 40', various decorative effects can be produced, thereby improving the decorative effect compared to directly exposing the synthetic resin moldings.

However, since the conventional 'decorative film' forms the surface of various interior and exterior materials, the impact applied from the outside is intact, thereby frequently causing damage such as scratches and presses to the product surface including the printed layer. There was a problem that the beauty of deterioration.

In order to solve this problem, in the manufacture of the decorative film, the thickness of the top coating layer is formed as thick as possible in the manufacture of the decorative film.

However, when the thickness of the top coating layer is formed to be relatively thick, the product elongation is inevitably lowered, and there is a problem in that the moldability is deteriorated in the subsequent preliminary molding process.

For the above reasons, in the related field, attempts have been made to develop a decorative film to prevent damage to the surface of the product such as scratches and presses caused by impacts from the outside by increasing the hardness of the surface of the product. The situation is not getting results.

The present invention has been proposed in view of the above circumstances, and solves the problem that the appearance has been deteriorated due to damage such as scratches and presses on the surface of the product including the printed layer due to the impact from the outside. It is an object to provide a high hardness decorative film for TOM decorative molding and a manufacturing method thereof.

In addition, the present invention, for the TOM decorative molding to solve the problem that the elongation of the product is lowered when the thickness of the top coating layer formed on the top of the printed layer is relatively thick, thereby reducing the moldability in the subsequent decorative molding process It is an object to provide a high hardness decorative film and a method for manufacturing the same.

High hardness decorative film for TOM decorative molding according to the present invention for achieving the above object, a base layer formed of a resin film; A printing layer formed on an upper surface of the base layer to impart a decorative effect through a print pattern; An acrylic film layer formed on the printed layer to increase the hardness of the product; It is formed on the acrylic film layer, a top coating layer to protect the lower layer.

The resin film forming the base layer is polyvinyl chloride, styrene-acrylonitrile copolymer, polyethylene, polypropylene, polybutene, polymethylpentene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene- Acrylic acid copolymer, ethylene-propylene-butene copolymer, polyolefin-based thermoplastic elastomer, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyarylate, polycarbonate, ethylene terephthalate-isophthalate copolymer It can be formed as one.

The base layer may have a thickness of 0.1-0.5mm.

The print pattern of the print layer is printed by any one of gravure printing, offset, screen printing, flexo printing, electrostatic printing, and inkjet printing.

The acrylic film layer may have a thickness of 0.05-0.1mm.

The top coating layer may be formed of at least one of a solvent-free ultraviolet curing resin or an acrylic compound, a urethane compound, an epoxy compound, and a siloxane polymer.

The top coating layer may have a thickness of 5-100㎛.

In addition, a method for manufacturing a high hardness decorative film for TOM decorative molding according to the present invention for achieving the above object comprises: a first step of preparing a base layer formed of a resin film; A second step of forming a printing layer by printing a pattern on the upper surface of the substrate layer; A third step of forming an acrylic film layer by bonding an acrylic film to the upper surface of the printed layer; And a fourth step of forming a top coating layer by coating a solvent-free UV curable resin on the top surface of the acrylic film layer or by transfer coating at least one of an acrylic compound, a urethane compound, an epoxy compound, and a siloxane polymer.

The acrylic film of the third system is bonded to the upper surface of the printed layer by thermal lamination.

The high hardness decorative film for TOM decorative molding according to the present invention and a method of manufacturing the same, the acrylic film layer is formed between the printed layer and the top coating layer, and the acrylic film layer increases the hardness of the product surface portion including the printed layer. Since the impact resistance is improved, damage to the surface of the product, such as scratches and presses due to impact from the outside, can be prevented, so that the appearance can be maintained for a long period of time.

1 is a schematic cross-sectional view showing the structure of a high hardness decorative film for TOM decorative molding according to the present invention.
Figure 2 is a schematic process diagram of a method for manufacturing a high hardness decorative film for TOM decorative molding according to the present invention.
Figure 3 is an exemplary view for explaining the formation of a printed layer in the method of manufacturing a high hardness decorative film for TOM decorative molding according to the present invention.
Figure 4 is an exemplary view for explaining the formation of the acrylic film layer in the method for manufacturing a high hardness decorative film for TOM decorative molding according to the present invention.
Figure 5 is an exemplary view for explaining the formation of a top coating layer in the method of manufacturing a high hardness decorative film for TOM decorative molding according to the present invention.
Figure 6 is a schematic cross-sectional view showing a conventional decorative film structure.

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

As shown in Figure 1, the high hardness decorative film (A) for TOM decorative molding according to the present invention includes a base layer 10, a printing layer 20, an acrylic film layer 30, and a top coating layer 40 do.

The base layer 10 is formed of a resin film.

The resin film forming the base layer 10 may be known in the field of decorative film, preferably polyvinyl chloride, styrene-acrylonitrile copolymer, polyethylene, polypropylene, polybutene, Polymethylpentene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-propylene-butene copolymer, polyolefin-based thermoplastic elastomer, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, It can be formed of any one of polyarylate, polycarbonate, and ethylene terephthalate-isophthalate copolymers.

On the other hand, the base layer 10 is preferably formed to a thickness of 0.1-0.5mm.

When the thickness of the base layer 10 is less than 0.1 mm, the support of the upper layer is unstable, and when the thickness of the base layer 10 exceeds 0.5 mm, due to the thickness, the wrapping of the inner and outer materials in the subsequent decorative molding process Difficult, the base layer 10 is preferably formed to a thickness of 0.1-0.5mm.

The printing layer 20 is formed on the upper surface of the base layer to give a decorative effect through a print pattern.

In the printing layer 20, the print pattern may be printed by any conventional printing method, and preferably, a gravure printing method, an offset method, a screen printing method, a flexo printing method, an electrostatic printing method, an inkjet It can be printed by any of the printing methods.

Meanwhile, the print pattern may be printed with any conventional material as long as it can be colored. Preferably, the print pattern can be printed with a coloring ink obtained by dissolving a colorant and a binder resin in a solvent.

The acrylic film layer 30 is formed on the printing layer 20 to increase the hardness of the product.

The acrylic film layer 30 is preferably formed to a thickness of 0.05-0.1mm.

When the thickness of the acrylic film layer 30 is less than 0.05 mm, the hardness is insignificant, and when the thickness of the acrylic film layer 30 exceeds 0.1 mm, due to the thickness, the interior and exterior materials in a subsequent decorating molding process Since it is difficult to wrap, the acrylic film layer 30 is preferably formed to a thickness of 0.05-0.1mm.

In addition, the acrylic film layer 30 is not limited to the upper limit of the elongation, but when the elongation is less than 200%, the elongation may be lower than the film to be the base material, thereby deteriorating the moldability, thereby the acrylic film layer (30), the elongation is preferably 200-500%, and more preferably 300-500%.

The top coating layer 40 is formed on the acrylic film layer 30 to protect the lower layer.

The top coating layer 40 may be formed of a material known in the field of decorative film, and preferably may be formed of at least one of a solvent-free UV curable resin or an acrylic compound, a urethane compound, an epoxy compound, and a siloxane polymer. .

On the other hand, the top coating layer 40 is preferably formed to a thickness of 5-100㎛.

When the thickness of the top coating layer 40 is less than 5 μm, the protection of the lower layer is negligible, and when the thickness of the top coating layer 40 exceeds 100 μm, the thickness of the top coating layer 40 wraps the interior and exterior materials in a subsequent molding process This difficulty, the top coating layer 40 is preferably formed to a thickness of 5-100㎛.

In addition, as shown in Figure 2, the method of manufacturing a high hardness decorative film for TOM decorating molding according to the present invention includes the first step (S1), the second step (S2), the third step (S3), and the fourth step ( S4).

In the first step (S1), the base layer 10 formed of a resin film is prepared.

In the first step (S1), the resin film may be formed by any conventional film forming method, and may be any one of a calendar method, an extrusion method, and an inflation method.

At this time, the resin film forming the base layer 10, as described above, polyvinyl chloride, styrene-acrylonitrile copolymer, polyethylene, polypropylene, polybutene, polymethylpentene, ethylene-propylene copolymer, Ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-propylene-butene copolymer, polyolefin-based thermoplastic elastomer, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyarylate, polycarbonate, ethylene It is preferably formed of any one of terephthalate-isophthalate copolymers.

In the second step (S2), the printed layer 20 is formed by printing a pattern on the upper surface of the base layer 10.

In this second step (S2), the pattern may be printed by any conventional printing method as described above, and preferably, a gravure printing method, an offset method, a screen printing method, a flexo printing method, and an electrostatic It can be printed by any one of a printing method and an inkjet printing method.

Further, the pattern can be printed with any conventional material as long as it can be colored as described above. Preferably, the pattern can be printed with a coloring ink obtained by dissolving a colorant and a binder resin in a solvent.

In the third step (S3), the acrylic film layer 30 is formed by bonding an acrylic film (not illustrated) to the upper surface of the printing layer 20.

In the third step (S3), the acrylic film may be bonded by any conventional bonding method, and may be preferably bonded by thermal lamination.

By bonding the acrylic film to the upper surface of the printing layer 20 by thermal laminating, the bonding state of the printing layer 20 and the acrylic film layer 30 is maintained for a long period of time.

In the fourth step (S4), the top coating layer 40 is coated by coating a solvent-free UV curable resin on the upper surface of the arc-fill film layer 30 or at least one of an acrylic compound, a urethane compound, an epoxy compound, and a siloxane polymer. ).

The production of the high hardness decorative film for TOM decorative molding by the method for manufacturing a high hardness decorative film for TOM decorative molding according to the present invention will be described in detail as follows.

First, the base layer 10 formed of a resin film is prepared.

That is, the first step (S1) in the present invention is carried out.

At this time, the resin film forming the base layer 10 is polyvinyl chloride, styrene-acrylonitrile copolymer, polyethylene, polypropylene, polybutene, polymethylpentene, ethylene-propylene copolymer, ethylene-vinyl acetate Copolymer, ethylene-acrylic acid copolymer, ethylene-propylene-butene copolymer, polyolefin-based thermoplastic elastomer, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyarylate, polycarbonate, ethylene terephthalate-iso It is formed of any one of phthalate copolymers, and any of the calendering method, extrusion method, and inflation method is used as a method for forming the resin film.

Next, as illustrated in FIG. 3, the printing layer 20 is formed over the base layer 10.

That is, the second step (S2) in the present invention is carried out.

At this time, as the pattern forming material of the printing layer 20, a coloring ink obtained by dissolving a colorant and a binder resin in a solvent is used, and as a method of forming the pattern, a gravure printing method, an offset method, a screen printing method, Any one of a flexo printing method, an electrostatic printing method, and an inkjet printing method is used.

The printing layer 20 is formed on the upper surface of the base layer 10, thereby giving the decorative effect of the product by the pattern.

Next, as shown in Figure 4, the acrylic film layer 30 is formed on the upper surface of the printing layer 20.

That is, the third step (S3) in the present invention is carried out.

At this time, the acrylic film forming the acrylic film layer 30 is firmly bonded to the upper surface of the printed layer 20 by thermal laminating.

Here, since the acrylic film is relatively high hardness, the impact resistance of the product surface portion including the printing layer 20 can be improved by the acrylic film layer 30 formed of the acrylic film. Damage to the surface of the product, such as scratches and presses, is prevented, so the beauty of the appearance is maintained for a long time.

Next, as shown in Figure 5, the top coating layer 40 is formed on the upper surface of the acrylic film layer 30.

That is, the fourth step (S4) in the present invention is carried out.

At this time, the top coating layer 40 may be formed by coating a solvent-free UV curable resin or transfer coating at least one of an acrylic compound, a urethane compound, an epoxy compound, and a siloxane polymer.

On the other hand, the top coating layer 40 is superior in solvent resistance compared to the acrylic film layer 30 due to the characteristics of the material, and not only the impact resistance is improved but also the chemical resistance is improved by the top coating layer 40. In addition to preventing damage to the product surface due to impact, damage to the product surface due to contact with a solvent or the like is prevented.

As described above, the high hardness decorative film (A) for TOM decorative molding according to the present invention and a method of manufacturing the acrylic film layer (30) are formed between the printed layer (20) and the top coating layer (40). Bar, since the hardness of the surface of the product including the printed layer 20 is increased by the acrylic film layer 30, the impact resistance is improved, so that damage to the product surface, such as scratches and presses due to impact from the outside, can be prevented. Therefore, the beautiful appearance can be maintained for a long time.

Since the present invention as described above is not limited to the above-described embodiments, it can be changed within a range not departing from the gist of the present invention claimed in the claims, and such changes are defined by the following claims It is within the scope of the invention.

10, 10 ': base layer 20, 20': printed layer
30: acrylic film layer 40, 40 ': top coating layer
A, A ': Decorative film S1: First step
S2: Second stage S3: Third stage
S4: Step 4

Claims (9)

A base layer formed of a resin film;
A printing layer formed on an upper surface of the base layer to impart a decorative effect through a print pattern;
An acrylic film layer having a thickness of 0.05-0.1mm and an elongation of 200-500% formed on the printed layer to increase the hardness of the product;
A top coating layer formed on the acrylic film layer to protect the lower layer; High hardness decorative film for TOM decorative molding comprising a.
According to claim 1,
The resin film forming the base layer is polyvinyl chloride, styrene-acrylonitrile copolymer, polyethylene, polypropylene, polybutene, polymethylpentene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene- Acrylic acid copolymer, ethylene-propylene-butene copolymer, polyolefin-based thermoplastic elastomer, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyarylate, polycarbonate, ethylene terephthalate-isophthalate copolymer High hardness decorative film for TOM decorative molding that is formed as one.
According to claim 1,
The base layer is a high hardness decorative film for TOM decorative molding that is formed to a thickness of 0.1-0.5mm.
According to claim 1,
The printed pattern of the printed layer is a high hardness decorative film for TOM decorative molding, which is printed by any one of a gravure printing method, an offset method, a screen printing method, a flexo printing method, an electrostatic printing method, and an inkjet printing method. .
delete According to claim 1,
The top coating layer is a high hardness decorative film for TOM decorative molding, which is formed of at least one of a solvent-free UV curable resin or an acrylic compound, a urethane compound, an epoxy compound, and a siloxane polymer.
According to claim 1,
The top coating layer is a high hardness decorative film for TOM decorative molding that is formed to a thickness of 5-100㎛.
A first step of preparing a base layer formed of a resin film;
A second step of forming a printing layer by printing a pattern on the upper surface of the substrate layer;
A third step of forming an acrylic film layer having a thickness of 0.05-0.1mm and an elongation of 200-500% by bonding an acrylic film to the upper surface of the printed layer by thermal lamination;
A fourth step of forming a top coating layer by coating a solvent-free UV curable resin on the upper surface of the acrylic film layer or by transferring at least one of an acrylic compound, a urethane compound, an epoxy compound, and a siloxane polymer; Method for manufacturing a high hardness decorative film for TOM decorative molding comprising a.
delete

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