JP2000094609A - Coating film for decorative sheet and decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating film for a decorative sheet and a decorative sheet which has a high grade feel and further good fabrication properties such as bending, sticking and vacuum molding. SOLUTION: This decorative sheet uses a coated film which comprises a layer of a composition composed of 100 pts.wt. polypropylene resin and 1-50 pts.wt. polybutene formed on at least, one of the surfaces, and having preferably 300-2000 MPa of tensile modulus both in the film flow direction and in an orthogonal direction to the film flow direction, and 30-500% tensile break elongation in the film flow direction and in an orthogonal direction to the film flow direction. In addition, the coating film has no yield point in at least one direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a covering film for a decorative sheet made of a specific resin composition and a decorative sheet using the covering film. More specifically, the present invention relates to a decorative sheet covering film and a decorative sheet having translucent and low gloss characteristics (hereinafter also referred to as a matte feeling).

[0002]

2. Description of the Related Art Conventionally, decorative sheets have been widely used as interior building components. Polyvinyl chloride films have been mainly used for films constituting these decorative sheets because they require characteristics such as design properties, secondary workability, and weather resistance.

However, in recent years, it has been pointed out that various organic substances such as a plasticizer contained in a polyvinyl chloride film and harmful substances generated when the film is incinerated have an adverse effect on the environment. Therefore, as a new decorative sheet replacing the decorative sheet having the polyvinyl chloride film as a constituent layer, JP-A-6-16832 and JP-A-8-34 are disclosed.
No. 105 proposes a decorative sheet in which polyvinyl chloride is replaced by an olefin-based thermoplastic elastomer or an olefin-based resin.

[0004] However, the decorative sheet having a polyolefin-based film as a constituent layer proposed in the above publication cannot sufficiently satisfy the properties as a decorative sheet. For example, a decorative sheet using a polyolefin-based film described in JP-A-8-34105 as a constituent layer can be used by being stretched when pasting on a support such as wood, or subjected to secondary molding such as vacuum forming. When processing, the stress decreases near the yield point,
Necking is likely to occur and the appearance is likely to be poor, and there has been a problem particularly in the ease of secondary processing into a complicated shape. Further, a film using a film using a low-crystalline elastomer or the like described in JP-A-6-16832 as a constituent layer,
Even if the occurrence of necking can be reduced, the film becomes soft, so that there is a problem that poor appearance is likely to occur during secondary processing.

[0005] Under the above background, the inventors of the present invention have good secondary workability such as bending / pasting and vacuum forming.
A decorative sheet including a polyolefin-based film as a constituent layer has been proposed (JP-A-10-67081).

On the other hand, when a decorative sheet is used as an interior building member, it may be required to give a sense of quality. However, Japanese Patent Application Laid-Open No. H10-67081
The decorative sheet containing the polyolefin-based film described in Patent Document 1 as a constituent layer has good secondary processing properties, but has relatively high transparency and high gloss.
There was room for improvement.

[0007] Ordinarily, decorative sheets are used by laminating layers having various properties as constituent layers.
In addition, imparting a sense of quality can generally be achieved by providing a layer having a design property on the surface layer of the decorative sheet.

In order to solve the above-mentioned problems, the present inventors have already used a covering film made of a resin composition of a polypropylene-based resin and high-density polyethylene as a constituent layer of a decorative sheet, so that bending and complicated processing can be achieved. Japanese Patent Application No. 9-298040 proposes a decorative sheet that has good secondary workability such as attachment to a shape and has a matte feeling as a high-class feeling.

However, the above-mentioned Japanese Patent Application No. 9-29804
The decorative sheet having a matte feeling described in No. 0 still has room for improvement to meet the demand for higher designability and a higher-grade feel.

[0010]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a covering film for a decorative sheet, which has both high transparency and excellent matte feeling as a high-class feeling, and the decorative sheet An object of the present invention is to provide a decorative sheet excellent in a sense of quality by using a coating film for use.

[0011]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above problems, and as a result, the above objects have been achieved by using a film having a specific composition as a covering film for a decorative sheet. The inventors have found that the present invention can be performed, and have completed the present invention.

That is, the present invention relates to a polypropylene resin 1
A layer comprising a composition of 00 parts by weight and 1 to 50 parts by weight of a polybutene-based resin, at least one surface of which is provided with a covering film for a decorative sheet and a decorative sheet using the covering film for a decorative sheet. is there.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The polypropylene resin used in the present invention is not particularly limited, and known resins such as propylene homopolymer and propylene-α-olefin copolymer can be used. Among them, in consideration of the secondary processability, a propylene homopolymer, a propylene-ethylene-random copolymer having a monomer unit based on ethylene of 15 mol% or less, a monomer unit based on ethylene and 1-butene are included. 1 to 10 mol% of a propylene-ethylene-butene random copolymer, and 1 to 10 mol% of propylene-α- having a monomer unit based on an α-olefin having 4 to 8 carbon atoms.
Olefin random copolymers and mixtures of these polymers are preferred.

Further, in consideration of the secondary workability, the polypropylene resin preferably has a mmmm pentad fraction of 0.80 to 0.97 by ¹³ C-NMR.

The melt flow rate (hereinafter referred to as MFR) of the polypropylene resin is 0.1 to 30 g / 10 minutes (230 ° C.), more preferably 0.5 to 15 g / 10, in consideration of film forming properties. It is preferably in the range of minutes (230 ° C.).

On the other hand, the polybutene resin used in the present invention is not particularly limited, and a known resin can be used. For example, a 1-butene homopolymer, a copolymer of 1-butene with another α-olefin as a main component, a mixture of these polymers, and the like can be given. In the copolymer, 1-butene is preferably 90 mol% or more and other α-olefin is preferably 10 mol% or less. Examples of the other α-olefin include ethylene, propylene, 1-pentene, 1-hexene and the like can be mentioned. Among them, considering the effects of the present invention, 1
More preferably, it is a butene homopolymer.

The MFR of the polybutene resin is 2-3.
Those having 0 g / 10 minutes (230 ° C.) are particularly preferred for imparting uniform opacity to the film.

The amount of the polybutene resin in the composition of the polypropylene resin and the polybutene resin used in the present invention must be 1 to 50 parts by weight based on 100 parts by weight of the polypropylene resin. is there. If the blending amount of the polybutene resin is less than 1 part by weight, there is no effect of uniformly roughening the film, and a high-grade feeling cannot be imparted. On the other hand, when the blending amount of the polybutene-based resin is more than 50 parts by weight, the opacity of the film increases, so that the transparency of the base material deteriorates, and the design as a covering film for a decorative sheet is unfavorably deteriorated.

In the above composition, an antistatic agent, an antifogging agent, an antiblocking agent, an antioxidant, a light stabilizer, a crystal nucleating agent, a lubricant, if necessary, as long as the effects of the present invention are not impaired. Known additives such as a surfactant, a filler, and a foaming agent for imparting lubrication and anti-blocking properties may be blended.

As the method for producing the composition used in the present invention, known methods can be employed without any limitation. For example, a method in which a polypropylene resin and a polybutene resin are melt-kneaded to form a composition, A method of simply blending with a polybutene-based resin to form a composition is exemplified. Among these, a method of melt-kneading a polypropylene-based resin and a polybutene-based resin to form a composition is preferred in consideration of the blending properties, the extrusion characteristics of the composition, and the like.

The coating film for a decorative sheet of the present invention is a single layer if the layer comprising the composition of 100 parts by weight of the polypropylene resin and 1 to 50 parts by weight of the polybutene resin is at least one surface. Or two or more layers. When a specific layer configuration is exemplified, a single-layer configuration consisting only of the above composition, a two-layer configuration consisting of a layer of the above-described composition and a layer of another resin, the above-mentioned composition is both outer layers and the other resin is an inner layer. A three-layer configuration and the like can be given. Among them, easily achieving excellent transparency and matte feeling,
Furthermore, in consideration of imparting blocking resistance, a two-layer structure including a layer of the composition and a layer of another resin,
It is preferable that the composition is a multilayer film having a three-layer structure in which both outer layers and another resin are inner layers.

The other resin used in the above-mentioned decorative film for a decorative sheet is preferably a crystalline polyolefin resin having transparency in view of the excellent transparency that is the object of the present invention.

The crystalline polyolefin resin may have a crystallinity of 5% or more, more preferably 20% or more, and still more preferably 30% or more, in consideration of the secondary workability of the decorative sheet to be obtained. It is suitable. When the crystalline polyolefin resin is exemplified, ethylene, propylene, 1-butene, 1-pentene, 1-hexene, α-olefin homopolymer such as 4-methyl-1-pentene, and the like, Examples thereof include a block copolymer, a copolymer of an α-olefin with a monomer other than the α-olefin copolymerizable with the α-olefin, or a mixture of these polymers. Among them, in view of transparency, a propylene homopolymer or a propylene-ethylene random copolymer having a monomer unit based on ethylene of 20 mol% or less is preferable.

The thickness of the coating film for a decorative sheet of the present invention is not particularly limited, but is generally appropriately selected within a range of 5 to 250 μm, and preferably 15 to 200 μm.

The thickness of the layer comprising the composition of 100 parts by weight of the polypropylene resin and 1 to 50 parts by weight of the polybutene resin in the coating film for a decorative sheet is determined in consideration of transparency and matte feeling. , 2 to 100%, and preferably 5 to 50%.

The haze value of the coating film for a decorative sheet is preferably 5 to 50% in consideration of the matte feeling, blocking property and transparency of the film.
More preferably, it is 5%.

In the present invention, the object of the present invention can be achieved by using the above-mentioned decorative film for a decorative sheet as the outermost layer of a decorative sheet. With such characteristics, a decorative sheet having good secondary workability can be easily obtained.

That is, the tensile modulus of the covering film for a decorative sheet is defined as a direction perpendicular to the flow direction of the film (hereinafter referred to as MD direction) and the flow direction of the film (hereinafter referred to as TD direction). ) Both 300-2000
MPa, preferably 500 to 1500 MPa
Is more preferable. Tensile modulus is 300MPa
When the size is smaller, the obtained covering film for a decorative sheet becomes too soft, and a decorative sheet using the covering film for a decorative sheet is not preferable because wrinkles and the like are easily generated. If the tensile modulus is more than 2000 MPa, the resulting decorative film for a decorative sheet is too hard, and the decorative sheet using the decorative film for a decorative sheet is unfavorably deteriorated in heat workability such as embossing. .

The tensile elongation of the coating film for a decorative sheet of the present invention is 30 to 500% in both the MD and TD directions.
And more preferably 50 to 500.
%, More preferably 80 to 500%. When the tensile elongation is less than 30%, the decorative sheet using the resulting decorative film for decorative sheet is not preferred because the bending workability and vacuum formability are reduced. On the other hand, when the tensile elongation is more than 500%, the orientation of the film is small, and the resulting coated film for a decorative sheet is easily stretched. When performing the secondary processing, the sheet is locally stretched, which is not preferable because the design property is impaired.

In the present invention, considering secondary workability, etc., the coating film for a decorative sheet is JIS-K711.
When a tensile test is carried out in accordance with No. 3, it is preferable that there is no yield point in at least one direction.
More preferably, it has no yield point in any direction.

Considering that the above-mentioned properties can be easily obtained, the coating film for a decorative sheet is composed of a layer composed of 100 parts by weight of the polypropylene resin and 1 to 50 parts by weight of the polybutene resin and another resin. It is preferable that the film is a multilayer film of two or more layers composed of the following layers.

In addition, by using the decorative film covering film having the above-mentioned characteristics as a constituent layer of the decorative sheet, there is no necking at the time of secondary processing, so that the film can be suitably used when affixing to a substrate or the like. A decorative sheet having high flexibility can be obtained.

The decorative film for a decorative sheet of the present invention is preferably stretched in at least one direction, more preferably biaxially.

In the present invention, the method for producing the above-mentioned coated film for a decorative sheet is not particularly limited. For example, a typical method is a method in which the composition is melt-extruded and then uniaxially or biaxially stretched. Is mentioned.

When the covering film for a decorative sheet is a multi-layer film, the resin constituting each layer is co-extruded to form a film, or the resin forming each layer is co-extruded and then monoaxially or biaxially extruded. How to stretch to the axis,
Alternatively, there is a method in which one layer of resin is melt-extruded and uniaxially stretched, and another layer of resin is melt-extruded thereon and stretched in a direction substantially perpendicular to the direction of uniaxial stretching.

The stretching method includes a longitudinal or horizontal uniaxial stretching method, a vertical and horizontal sequential biaxial stretching method, a simultaneous biaxial stretching method, a rolling method, and a method of continuously stretching a sheet formed by calendering in at least one direction. However, in consideration of the balance of physical properties in the MD and TD directions and the thickness / thickness precision, a longitudinal and horizontal sequential biaxial stretching method and a simultaneous biaxial stretching method by a tenter method are preferable.

The stretching conditions in the above stretching method are not particularly limited, but in order to easily satisfy the above properties,
Preferably, the area stretching ratio is 1.1 to 30 times,
The ratio is more preferably 2 to 25 times, and further preferably 4 to 20 times. If the area stretch ratio is lower than 1.1, the resulting coated film for decorative sheet has a low tensile modulus, and even if necking occurs or no necking occurs, the coated film for decorative sheet becomes too soft. The film is locally stretched during the next processing, which is not preferable for the use. When the area stretch ratio exceeds 30 times, the tensile strength of the obtained decorative film for a decorative sheet increases, and the tensile elongation decreases. This is not preferable because appearance defects are likely to occur.

The respective draw ratios in the MD direction and the TD direction are set so that there is no yield point in at least one direction.
It is appropriately selected in the range of 1.1 to 10 times. Among them, in particular, in order to balance physical properties in the MD and TD directions, impart flexibility and elasticity, and further impart elongation, stretching in the MD direction and TD direction is preferably 2 to 6 times. 3 to 5 times is more preferable.

After the stretching, if the film is relaxed at a temperature slightly higher than the stretching temperature, low heat shrinkage can be imparted.

The decorative sheet of the present invention is configured such that a layer composed of 100 parts by weight of the polypropylene resin and 1 to 50 parts by weight of the polybutene resin of the covering film for a decorative sheet is the outermost layer. There is no particular limitation.

For example, as shown in FIG. 1, if the decorative sheet is composed of a base film layer 1, a printing layer 2 and a covering film layer 3, the decorative sheet covering film of the present invention may be
The coating film layer 3 may be used such that a layer made of a composition of 100 parts by weight of the polypropylene resin and 1 to 50 parts by weight of the polybutene resin is the outermost layer.

With the above configuration, the base film layer 1 and / or
Alternatively, the decorative layer is excellent in transparency, such as a pattern or the like imparted to the print layer 2, and is further provided with a matte feeling on the surface of the covering film, so that it is possible to obtain a decorative sheet excellent in luxury and good in design. it can.

Further, in the decorative sheet exemplified above,
The film used for the base film layer 1 is not particularly limited, and among them, it is preferable to appropriately select a film that does not impair the properties as a decorative sheet shown below, in consideration of the secondary processability.

Examples of the film used for the base film layer 1 include a non-stretched polyolefin film, a biaxially stretched polyolefin film, a T-die method, an inflation method, and the like.
Examples thereof include a polyolefin-based film uniaxially stretched by a rolling method or the like. Among these, in consideration of the workability to a decorative sheet and the secondary workability of attaching the decorative sheet to the substrate, a non-stretched polyolefin-based film, or
A biaxially oriented polyolefin-based film stretched at a slightly lower magnification is suitable.

The thickness of the substrate film layer 1 is not particularly limited, either, but is preferably in a range that does not impair the characteristics as a decorative sheet shown below, for example, 30 to 200 μm.

The printing layer 2 can be formed by printing a pattern such as a grain pattern by a known method such as gravure printing.

Although the decorative sheet of the present invention has both excellent transparency and designability by the above-described structure,
By having the following characteristics, it also has excellent secondary workability.

That is, the tensile modulus of the decorative sheet is M
The pressure is preferably 300 to 2000 MPa in both the D direction and the TD direction, and more preferably 500 to 1500 MPa. If the tensile modulus is less than 300 MPa, the resulting decorative sheet becomes too soft, and wrinkles and the like are likely to occur. If the tensile elastic modulus is more than 2000 MPa, the decorative sheet to be obtained is too hard, and the thermal workability such as embossing is lowered, which is not preferable.

The tensile elongation of the decorative sheet is preferably 30 to 500% in both the MD and TD directions, more preferably 50 to 500%, and further preferably 80 to 500%. is there. If it is less than 30%, the resulting decorative sheet is not preferred because the bending processability and vacuum formability of the resulting decorative sheet are reduced. on the other hand,
When the tensile elongation is more than 500%, the orientation of the sheet is small, and the decorative sheet is easily stretched. Therefore, when performing secondary processing such as vacuum forming, the sheet is locally stretched to improve the design. It is not preferable because it impairs. In addition, it is preferable that there is no yield point in at least one direction.

The method for producing the decorative sheet of the present invention is not particularly limited, and any known method may be employed. For example, as shown in FIG. 1, in the case of a decorative sheet including a base film layer 1, a print layer 2 and a cover film layer 3, a print layer 2 such as a woodgrain is formed on the surface of the base film layer 1, Next, a method of laminating the coating film layer 3 by hot lamination or dry lamination can be exemplified.

The decorative sheet of the present invention may be subjected to embossing or the like on the outermost coating film for a decorative sheet as long as the transparency and matte feeling of the present invention are not impaired. However, another known layer configuration may be added. For example, it is possible to provide a wiping coating 4 and a surface protection layer 5 on the covering film for a decorative sheet as shown in FIG. In addition, a printed layer may be provided on the covering film for a decorative sheet.

A typical method of the wiping coating 4 is, for example, a method of embossing a conduit on the surface of the coating film layer 3, inserting a colored ink into the conduit, and then wiping.

The surface protective layer 5 is formed by coating a transparent member such as urethane, polyolefin, various thermosetting or photo-curing emulsions by a known method.

The decorative sheet thus obtained can be used for known applications without any particular limitation. For example, plywood, steel plate, aluminum plate, particle board, MDF (medium fiber board), inorganic board (eg, gypsum board), concrete wall, resin board, foam, heat insulator, and hybrids and mixtures thereof The decorative sheet can be attached to the support of the above through an adhesive to form a decorative plate.

Examples of the method of sticking to the support include flat sticking, lapping, V-cutting, vacuum forming, and the like. The flat sticking includes hand sticking, press sticking, roller sticking, roller sticking, and the like. Lamination by press and the like can be mentioned. Also, there is no problem even if it is stuck to the support using other methods.

The use of the decorative board obtained in this way is not particularly limited, but may include a TV cabinet, a stereo speaker box, a video cabinet, various storage furniture,
Home appliances and furniture products such as unit furniture, doors, door frames,
Housing materials such as window frames, rims, baseboards, opening frames, etc., furniture materials such as kitchens, storage furniture doors, flooring materials, ceiling materials, wallpaper and other building materials, automotive interior materials, home appliances, stationery, office supplies It can be suitably used for such purposes.

[0057]

According to the present invention, a decorative sheet having a transparent property and a uniform matte feeling can be obtained by using a decorative film covering film having a layer made of a specific resin composition as a constituent layer of the decorative sheet. Can be obtained.

Further, since the decorative film for a decorative sheet has specific properties, it is possible to obtain a decorative sheet having no necking, moderate flexibility and excellent secondary workability imparted with tensile elongation, Furthermore, when the coating film for decorative sheets has a specific multilayer structure, a decorative sheet having excellent blocking resistance can be obtained.

[0059]

The present invention will be described in more detail with reference to the following Examples and Comparative Examples, which by no means limit the scope of the present invention. In the following Examples and Comparative Examples, the polypropylene resins used as film raw materials are those shown in Table 1.

[0060]

[Table 1]

The measuring methods used in the following Examples and Comparative Examples were implemented by the following methods.

(1) Pentad fraction (mmmm value) and copolymer composition Measured using JNM-GSX-270 ( ^13C- nuclear resonance frequency 67.8 MHz) manufactured by JEOL Ltd. under the following conditions.

Measurement mode: ¹ H-complete decoupling Pulse width: 7.0 microseconds (C45 degrees) Pulse repetition time: 3 seconds Integration count: 10,000 times Solvent: Mixed solvent of ortho-dichlorobenzene / deuterated benzene (90 / (10% by volume) Sample concentration: 120 mg / 2.5 ml Solvent Measurement temperature: 120 ° C. In this case, the mmmm pentad fraction was determined by measuring the splitting peak in the methyl group region of the ¹³ C-NMR spectrum. The assignment of the peak in the methyl group region is described in A.S.
Zambelli et al [Macromolec
ules 13, 267 (1980)].

(2) Tensile elongation (tensile elongation at break) A sample was cut into a 10 mm wide strip, and the measurement length was set to 40 mm.
Was recorded on a chart paper by a tensile tester at a tensile speed of 300 mm / min and a chart speed of 300 mm / min. The elongation at break (%) was read.

(3) Rigidity (Tensile Elastic Modulus) A sample was cut into a 10 mm wide strip, and the measurement length was set to 20 mm.
The rising angle was recorded on a chart paper by a tensile tester at a pulling speed of 20 mm / min and a chart speed of 2000 mm / min. A perpendicular line was drawn at a point 20 mm from the base point, the strength at the intersection with the tangent was read, and the tensile modulus was calculated by the following equation.

Tensile modulus (kg / mm ² ) = [strength (k
g) x sample length (mm) x chart speed (mm / min)]
[Tensile speed (mm / min) x 20 mm x film thickness (mm) x film width (mm)] (4) Transparency (haze) Measured according to JIS K6714.

(5) Surface gloss (gloss) Measured according to JIS K7105.

(6) Necking property From the obtained decorative sheet, a width of 100 mm and a length of 200 m
m was cut out and affixed to the surface of the wooden substrate shown in FIG. 2A with a double-sided tape, and then the substrate surface was bent at 23 ° C. at a right angle. Thereafter, the laminated sheet was removed from the base, and the thickness (t) of the bent portion and the thickness (t0) of the unfolded portion were measured, and the value of t / t0 was calculated.

(7) Blocking resistance A decorative sheet of 4 cm × 30 cm was cut out and had a thickness of 3 mm.
The surface layers were overlapped so that This laminated decorative sheet was left in an atmosphere of a temperature of 30 ° C. and a humidity of 70% RH for 24 hours, and then was pressed into a sample using a press machine.
A pressure of kg / cm ² was applied for 30 seconds. Thereafter, both ends of the sample were fixed with jigs, and the bending strength was measured using an autograph. The blocking resistance was determined as follows.

：: Bending strength of 300 kg or less and good blocking resistance ×: Bending strength of more than 300 kg and poor blocking resistance evaluated.

：: Uniform matte opacity △: Matte opacity, but lacking uniformity and poor in designability ×: Not matte ≠: It is almost opaque and the printed pattern on the base film is difficult to see through.

(9) Drawdown Property A decorative sheet was sandwiched between clamp frames (500 mm × 500 mm), the far-infrared heater was set at 300 ° C., and the film was heated from above and below. The length from the position before heating at the center of the film to the lowest point of the sag was measured, and evaluated according to Table 2.

[0073]

[Table 2]

(10) Formability Tray (length 200 mm, width 250 mm, height 20 mm)
Partition of container when vacuum-pressure-molded
m, height 15 mm) is defined as 100%, and the moldability is shown in Table 3 based on the height of the partition part of the molded product under each condition.
Was evaluated according to

[0075]

[Table 3]

(11) Measurement of main peak by DSC After weighing about 5 to 6 mg of a sample, the sample was sealed in an aluminum pan, and the temperature was raised from room temperature to 235 ° C. in a nitrogen flow of 20 ml / min with a differential calorimeter. Hold at this temperature for 10 minutes, then cool to room temperature at 10 ° C / min. Thereafter, the temperature of the main peak was measured by a melting curve obtained at a heating rate of 10 ° C./min.

Examples 1 to 6 The resins shown in Table 1 were converted to 280
After being extruded into a sheet while being heated and melted at ℃, and cooled and solidified on a chill roll, the film was stretched in the MD direction by a heating roll stretching machine at a stretching ratio shown in Table 4, and then stretched in the TD direction by a tenter transverse stretching machine. Thus, a resin composition film was obtained. In addition, a woodgrain-like printing is performed by gravure printing on the surface of an unstretched film (hereinafter referred to as CPP) having a thickness of 80 μm made of a propylene homopolymer (MFR: 0.5 DSC peak temperature: 161 ° C.), and a CPP for decorative sheet Obtained. Coating film layer, CP for decorative sheet
P is used as a base film layer, and the printed film is laminated using a dry lamination method so that the coated film layer becomes a surface layer. Further, a duct sheet embossing process is performed on the coated film to form a decorative sheet. Obtained. Table 4 shows the thickness, haze, gloss, tensile elongation, and tensile modulus of the obtained coated film. Further, the necking property, mat feeling, drawdown property, and thermoformability in vacuum pressure forming of the obtained decorative sheet were measured, and the results are shown in Table 4.

Comparative Examples 1 to 3 Example 1 was repeated except that the resins shown in Table 1 were used, and the composition of the raw resin and the stretching ratio were changed as shown in Table 4.
And a coated film was obtained. Further, a decorative sheet was obtained and evaluated in the same manner as in Example 1. The results are shown in Table 4.

Comparative Example 4 A resin composition film was used as a base film layer,
A decorative sheet was obtained and evaluated in the same manner as in Example 2 except that PP was used as the covering film layer. The results are shown in Table 4.

[0080]

[Table 4]

Examples 7 to 9 and 12 The resin shown in Table 1 was extruded into a sheet while being heated and melted at 280 ° C. using a multi-layer T-die extruder with the composition shown in Table 5, and then cooled and solidified on a chill roll. After that, the film was stretched in the MD direction by a hot roll stretching machine at a stretching ratio shown in Table 5, and then stretched in the TD direction by a tenter transverse stretching machine to obtain a laminated film. Table 5 shows the haze, gloss, tensile elongation, and tensile modulus of the obtained laminated film. A propylene homopolymer (MFR: 0.5 DSC peak temperature: 16
1 ° C.) and a woodgrain print was applied to the CPP having a thickness of 80 μm by gravure printing to obtain a CPP for a decorative sheet.
Coating film layer, CP for decorative sheet
P is used as a base film layer, and the printed film is laminated using a dry lamination method so that the coated film layer becomes a surface layer, and then the pipe is embossed (wood grain embossed) on the surface of the coated film. A decorative sheet was obtained. The obtained decorative sheet was measured for necking property, blocking resistance, matte feeling, drawdown property, and thermoformability.
It was shown to.

Example 10 Resin B shown in Table 1 was prepared using a single-layer T-die extruder.
After being extruded into a sheet while being heated and melted at 280 ° C., and solidified by cooling on a chill roll, the sheet was stretched in the MD direction by a heating roll stretching machine at a stretching ratio shown in Table 5 to obtain an MD stretched sheet. Next, a molten resin having the resin composition of the F2 layer shown in Table 5 was laminated on the MD stretched sheet, and then stretched in the TD direction to obtain a laminated film. Table 5 shows the haze, gloss, tensile elongation, and tensile modulus of the obtained laminated film. Further, a propylene homopolymer (MFR:
0.5 DSC peak temperature: 161 ° C.)
Grain printing was applied to the 0 μm CPP by gravure printing to obtain a CPP for decorative sheet. The laminated film was used as a coating film layer and the CPP for decorative sheet was used as a base film layer, and a dry laminating method was carried out across the printing surface so that the resin composition film layer (F1) shown in Table 5 was the outermost layer of the surface layer. Then, the surface of the coating film was embossed with a conduit (wood grain embossing) to obtain a decorative sheet. The necking property, blocking resistance, matte feeling, drawdown property, and thermoformability of the obtained decorative sheet were measured, and the results are shown in Table 6.

Example 11 Using a single-layer T-die extruder, resin A shown in
After being extruded into a sheet while being heated and melted at 80 ° C., solidified by cooling on a chill roll, the film is stretched in the MD direction by a heating roll stretching machine at a stretching ratio shown in Table 5, and then stretched in the TD direction by a tenter transverse stretching machine. Polyolefin film (F
2) was obtained. Furthermore, on both sides of this polyolefin-based film (F2), the resin shown in Table 1 was used in the configuration shown in Table 5,
Extrusion lamination was performed to obtain a laminated film. Table 5 shows the haze, gloss, tensile elongation, and tensile modulus of the obtained laminated film. In addition, propylene homopolymer (MF
R: 0.5 DSC peak temperature: 161 ° C.) The CPP having a thickness of 80 μm was subjected to woodgrain printing by gravure printing to obtain a CPP for decorative sheet. The laminated film is used as a coating film layer, and the CPP for decorative sheet is used as a base film layer, and the printed film is laminated using a dry lamination method so that the printed film is a surface layer. Embossing (wood grain embossing) was performed to obtain a decorative sheet. The necking property, blocking resistance, mat feeling, drawdown property, and thermoformability of the obtained decorative sheet were measured, and the results are shown in Table 6.

Comparative Example 5 A laminated film and a decorative sheet were obtained in the same manner as in Example 10, except that the resin shown in Table 1 was changed to the structure shown in Table 5. The obtained laminated film and decorative sheet were evaluated. The results are shown in Tables 5 and 6.

Comparative Examples 6 and 7 A laminated film and a decorative sheet were obtained in the same manner as in Example 7, except that the resin shown in Table 1 was changed to the structure shown in Table 5. The obtained laminated film and decorative sheet were evaluated. The results are shown in Tables 5 and 6.

Comparative Example 8 A decorative sheet was obtained in the same manner as in Example 7, except that the laminated film was a base film layer and the CPP for decorative sheet was a covering film layer. The obtained laminated film and decorative sheet were evaluated. The results are shown in Tables 5 and 6.

Comparative Example 9 A laminated film and a decorative sheet were obtained in the same manner as in Example 7, except that the resin shown in Table 1 was changed to the structure shown in Table 5. The obtained laminated film and decorative sheet were evaluated. The results are shown in Tables 5 and 6.

[0088]

[Table 5]

[0089]

[Table 6]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a typical embodiment of the decorative sheet of the present invention.

FIG. 2 is a sectional view showing a typical embodiment of the decorative sheet of the present invention.

[Description of Signs] 1 Base film layer 2 Print layer 3 Coating film layer 4 Wiping coating 5 Surface protective layer

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court ゛ (Reference) (C08L 23/10 23:20) B29K 23:00 B29L 7:00 9:00 F Term (Reference) 4F071 AA15X AA20 AA20X AA21 AA21X AF15Y AF16Y BA01 BB06 BB07 BB08 BC01 BC17 4F100 AK07B AK09B AL05B AT00A BA02 GB08 GB81 HB00 HB00A JK02B JK07B JK08B JL01 YY00B 4F210 AA11 QA01QA01QA01QA01A0112A01

Claims (3)

[Claims] 1. A layer comprising a composition of 100 parts by weight of a polypropylene resin and 1 to 50 parts by weight of a polybutene resin,
A coating film for a decorative sheet, wherein the coating film is at least one surface. 2. A film having a tensile modulus of elasticity of 300 in both the film flow direction and the direction perpendicular to the film flow direction.
2,000 MPa, and the tensile elongation at break is 30-500% in both the flow direction of the film and the direction perpendicular to the flow direction of the film, and further has no yield point in at least one direction. The covering film for a decorative sheet according to claim 1, wherein 3. A decorative sheet comprising the decorative film covering film according to claim 1 or 2 as a constituent layer, wherein the decorative film covering film has 100 parts by weight of a polypropylene resin and 1 to 50 parts by weight of a polybutene resin. Characterized in that a layer made of the above composition is constituted as an outermost layer.