JP2000177063A - Blow molding simultaneous decorating sheet and decorative blow molded product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the adhesion of a blow molding simultaneous decorating sheet even with respect to a blow molded product of a polyolefinic resin and to enhance the design effect thereof. SOLUTION: A blow molding simultaneous decorating sheet S is constituted by laminating a topcoat layer 1, a transparent base material layer 2, an adhesive layer 3, a pattern layer 4, a primer layer 5 (a and b) and a base material layer 6 from a surface side and a urethane resin consisting of acrylic polyol and yellowing-free isocyanate is used in the topcoat layer and a polyolefinic resin is used in both of the transparent base material layer and the base material layer and a urethane resin consisting of polyester polyol and isocyanate is used in the adhesive layer and a urethane resin is used in the pattern layer and a urethane resin is used in the primer layer. Appropriately, uneven patterns 7 and clored parts 8 formed to the recessed parts thereof using a urethane resin are provided to the surface of the transparent base material layer. A nonwoven fabric 9 is appropriately provided to the back surface of the sheet. This decorating sheet is laminated to a decorative blow molded product.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blow molding simultaneous decorating sheet for laminating and decorating a molded article surface simultaneously with blow molding, and a decorative blow molding suitable for obtaining by using the sheet. About goods. In particular, the present invention relates to a sheet for simultaneous blow-molding decoration suitable for lamination on a blow-molded product of an olefin-based resin, and a decorative blow-molded product using a polyolefin-based resin as a blow-molded resin.

[0002]

2. Description of the Related Art Conventionally, blow-molded articles have been used for various purposes such as containers, but in recent years, office equipment such as copier panels, desks, doors, wall panels, and housings have been used for purposes other than containers. It is also used for building materials such as equipment.
And it is not just a resin molded product simply molded,
If the surface is decorated with a pattern, characters, or the like, a blow-molded product having designability and information is obtained. In addition, so-called engineering plastics such as ABS resins and polyamide resins are also used as blow molding resins for building materials. In recent years, however, polyolefin resins such as polypropylene resins have been used from the viewpoint of Kotos or especially environmental problems. It is being used. As one of the methods for decorating such blow molded articles such as polyolefin resin, there is a method of laminating a decorative sheet to which letters and patterns are previously given on the surface of the resin molded article and integrating them. is there. In this case, there is also a method of laminating a decorative sheet on a molded resin article to form a decorative blow molded article.However, the decorative sheet is inserted into a molding die in advance, and molding of the molded article is performed. At the same time, there is also a method of simultaneous blow molding and decorating, in which a decorative sheet is laminated on the surface of the resin molded product and integrated with the resin molded product to form a decorative blow molded product. In the latter method, since the laminating step and the forming step can be performed in one step, the method is excellent in productivity.

[0003]

However, none of the conventional blow-molding and decorating sheets used for blow-molding and decorating can provide an excellent design feeling. Because of this,
For example, in applications where a high design is required for building materials such as doors, wall panels, housing equipment, and fittings, it has been difficult to apply decorative blow-molded products by blow molding.

Accordingly, an object of the present invention is to provide a sheet which is excellent in design and is suitable for a molded product of a polyolefin resin as a sheet for simultaneous decoration by blow molding. Another object of the present invention is to provide a decorative blow molded product in which a blow molded product of a polyolefin-based resin is decorated with a high design.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a blow molding simultaneous decorating sheet of the present invention is provided after a decorating sheet is set in a molding die during molding of a plastic molded product by blow molding. By performing the blow molding, the decorative sheet is laminated on the molded product, and the blow molding simultaneous decorative sheet used for the blow molding simultaneous decoration to form the decorative blow molded product is, in order from the front side, at least an overcoat layer , A transparent substrate layer, an adhesive layer, a pattern layer, a primer layer, and a substrate layer are laminated in this order, and the overcoat layer is a urethane resin composed of an acrylic polyol and a non-yellowing isocyanate, a transparent substrate layer, and a substrate layer. Both layers are a polyolefin resin, the adhesive layer is a urethane resin composed of polyester polyol and isocyanate, the picture layer is a urethane resin, and the primer layer is urethane. Resin is configured to have each been used. As a result, even if a picture layer is provided to decorate a high design, weather resistance to discoloration, delamination, etc., due to the overcoat layer,
The surface properties such as abrasion resistance and the heat resistance are excellent, and the coating feeling and the abrasion resistance are also improved by the overcoat layer and the transparent substrate layer. In addition, since the back side is a base material layer using a polyolefin resin, the blow molding resin of the polyolefin resin, which can be manufactured at a low cost, can be laminated to the resin molded article with good adhesion without an adhesive layer on the back surface. In addition, since both the base material layer and the transparent base material layer are polyolefin-based resins, they are environmentally friendly decorations for vinyl chloride resin, etc., which generate hydrogen chloride gas etc. during waste combustion. In addition to being a sheet, if it has a loose shape, the decorative sheet can be stretched and molded at the same time as the blow molding to decorate the sheet into a three-dimensional surface. Further, since each layer of the decorative sheet is made of a specific resin, the interlayer adhesion inside the sheet is excellent.

In addition, it is preferable to adopt a configuration in which a nonwoven fabric is further laminated on the back side of the base material layer, since the adhesion to the resin molded product is further improved.

[0007] Further, if the above-mentioned configuration is such that a through-hole penetrating through all layers of the sheet is regularly formed, air hardly remains between the sheet and the resin molded product. This is preferable in that the adhesion between the sheet and the resin molded product is further improved.

Further, for each of the above constitutions, an uneven pattern is formed on the surface side of the transparent base material layer, a colored portion is formed in a concave portion of the uneven pattern, and a urethane resin is used for the colored portion. With such a configuration, since it has an uneven pattern and a colored portion in addition to the picture layer, it is possible to decorate a high design with a high texture due to the unevenness. Further, since a urethane resin is used in the colored portion, the adhesion between the colored portion and the transparent resin layer and the overcoat layer adjacent thereto is also excellent.

Further, the decorative blow-molded article of the present invention has a configuration in which any one of the above-mentioned sheets for simultaneous blow-molding and decorating is laminated on a resin molded article made of a blow-molded polyolefin resin. By adopting such a configuration, it is possible to enjoy various effects obtained by the above-described sheet for simultaneous decoration by blow molding. In addition, this molded article is preferably obtained by decorating simultaneously with blow molding using any of the above sheets for simultaneous decorating with blow molding.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a blow molding simultaneous decorative sheet and a decorative blow molded product of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view illustrating the blow molding simultaneous decorating sheet of the present invention in one form, and FIG. 2 is a cross-sectional view illustrating the decorative blow molded article of the present invention in one form.

[0011] Blow molding simultaneous decoration sheet

As exemplified in FIG. 1 in one form, the layer structure of the blow molding simultaneous decorating sheet S of the present invention comprises, in order from the front side, an overcoat layer 1, a transparent base material layer 2, an adhesive layer 3, a pattern and the like. Pattern layer 4 and primer layer 5 formed by printing or the like expressing
a and 5b, the base layer 6 are laminated in this order, and the transparent base layer has an uneven pattern 7 formed by embossing or the like on the front side thereof, and is formed in a concave portion of the uneven pattern 7 by a wiping method or the like. This is a decorative sheet having a coloring portion 8. In addition,
If the decorative effect is sufficient without the uneven pattern 7 and the colored portion 8, these may be omitted. The primer layer may be a multilayer as shown in FIG. 1, but may be a single layer. In order to obtain such a sheet S for simultaneous blow-molding and decoration, for example, a primer layer 5b, and then a primer layer 5
After coating a, the pattern layer 4 is formed by printing to temporarily form a print sheet. On the other hand, a transparent polyolefin-based resin sheet is used for the transparent base material layer 2. After forming the uneven pattern 7 on the transparent resin sheet by embossing, the sheet in which the colored portion 8 is formed by wiping processing on the concave portion, The printing sheet is bonded to the printing sheet by dry lamination or the like using an adhesive to form the adhesive layer 3, and the overcoat layer 1 is further provided on the side of the transparent base material layer.
May be formed by coating.

Hereinafter, the substrate layer, the primer layer, the picture layer, the adhesive layer, the transparent substrate layer, the concavo-convex pattern, the overcoat layer, the nonwoven fabric, and the through-hole will be described in more detail.

[Base Layer] The base layer 6 is made of a polyolefin resin. As polyolefin resin,
Polyethylene (low density, medium density or high density), polypropylene, polymethylpentene, polybutene, ethylene-
Highly crystalline non-elastomeric polyolefin-based resins such as propylene copolymers and propylene-butene copolymers, or various olefin-based thermoplastic elastomers are used. As the olefin-based thermoplastic elastomer, for example, the following can be used.

(1) The soft segment described in JP-B-6-23278 (A) has a number average molecular weight Mn of 25,000 or more, and a ratio Mw / Mn of the weight average molecular weight Mw to the number average molecular weight Mn. 10 to 90% by weight of atactic polypropylene soluble in boiling heptane of ≦ 7,
(B) Soft polypropylene comprising, as a hard segment, a mixture of 90 to 10% by weight of a heptane-insoluble isotactic polypropylene having a melt index of 0.1 to 4 g / 10 min.

Among this kind of olefin-based thermoplastic elastomer, so-called "necking" is unlikely to occur, and it can be formed into various shapes by heating and pressing or embossing. In particular, the case where it is used for a transparent base material layer to be described later. The same applies to the following.) As a material having good suitability, the mixing ratio of the isotactic polypropylene and the atactic polypropylene is determined by the weight of the atactic polypropylene. It is not less than 5% by weight and not more than 50% by weight. The polypropylene-based olefin-based thermoplastic elastomer itself is already known, but when used in a conventionally known application such as a packaging container, the weight ratio of the soft segment atactic polypropylene is 5 to emphasize strength. Less than% by weight was exclusively used. However, when this is applied to a novel use such as forming into a three-dimensional shape or a concavo-convex shape or embossing, necking occurs as described above, and good processing cannot be performed.
Therefore, contrary to the design of the conventional composition, the weight ratio of the atactic polypropylene is set to 5% by weight or more in the polypropylene-based thermoplastic elastomer.
It is possible to eliminate defects such as non-uniform sheet deformation due to necking when forming or embossing a three-dimensional article or an uneven article surface shape, and resulting wrinkles, distortion of pictures and the like. it can. Particularly, the case where the weight ratio of the atactic polypropylene is 20% by weight or more is preferable. On the other hand, if the weight ratio of the atactic polypropylene increases too much, the sheet itself tends to deform, the sheet deforms when the sheet is passed through a printing machine, the pattern is distorted, or the register is lost in multicolor printing. And the like easily occur. Further, it is not preferable because it is easily broken during molding. As the upper limit of the weight ratio of the atactic polypropylene, the decorative layer is printed using a normal rotary printing machine such as rotary gravure printing, and when the sheet is stretched and molded at the same time as the blow molding, the sheet is embossed. When is used, 50% by weight or less, more preferably 40% by weight or less.
% By weight or less.

(2) A thermoplastic elastomer comprising an ethylene-propylene-butene copolymer resin. Here, as the butene, any of the three structural isomers of 1-butene, 2-butene and isobutylene can be used. Preferred specific examples of the ethylene-propylene-butene copolymer, which is a random copolymer and partially includes an amorphous portion, include the following (i) to (iii). (i) Those described in JP-A-9-111055. It is a random copolymer of a terpolymer of ethylene, propylene and butene. The weight ratio of the monomer components is 90% by weight or more of propylene. The melt flow rate is preferably 1 to 50 g / 10 minutes at 230 ° C. and 2.16 kg. And, for 100 parts by weight of such a ternary random copolymer, 0.01 to 50 parts by weight of a transparent nucleating agent containing a phosphate aryl ester compound as a main component,
It is obtained by melting and kneading 0.003 to 0.3 parts by weight of a fatty acid amide having 12 to 22 carbon atoms. (ii) Those described in JP-A-5-77371. this is,
80 to 0% by weight of crystalline polypropylene is added to 20 to 100% by weight of an amorphous polymer having a propylene content of 50% by weight or more, which is a terpolymer of ethylene, propylene and 1-butene. It is. (iii) Those described in JP-A-7-316358. This is a terpolymer of ethylene, propylene, and 1-butene, and the content of propylene and / or 1-butene is 50% by weight or more and 20 to 100% by weight of the low crystalline polymer. 0.5% by weight of an oil gelling agent such as N-acylamino acid amine salt or N-acylamino acid ester is added to a composition containing 80 to 0% by weight of a crystalline polyolefin such as isotactic polypropylene. It becomes.

The ethylene-propylene-butene copolymer resin may be used alone, or may be used in the above (i) to (iii).
If necessary, another polyolefin-based resin may be mixed and used.

(3) As described in JP-B-53-21021, (A) an olefin polymer (crystalline polymer) such as polyethylene, polypropylene and polymethylpentene is used as a hard segment, and (B) a partial cross-linking Monoolefin copolymer rubbers such as ethylene-propylene copolymer rubber and unsaturated ethylene-propylene-non-conjugated diene terpolymer rubber are used as soft segments, and these are uniformly blended and mixed. . In addition,
Monoolefin rubber / olefin polymer = 50 / 50-
Mix at a ratio of 90/10 (weight ratio).

(4) As described in JP-B-53-34210 and the like, (B) an uncrosslinked monoolefin copolymer rubber (soft segment) and (A) an olefin copolymer (crystalline, hard segment) ) And a cross-linking agent, and is heated to apply shear stress to dynamically partially cross-link an olefin-based elastomer. (B) monoolefin rubber / (A) olefin copolymer = 60/40 to 80/20
(Weight ratio).

(5) As described in JP-B-56-15741, (A) isotactic polypropylene, propylene-ethylene copolymer, propylene-butene-1
A peroxide-decomposable olefin polymer (hard segment), which decreases its molecular weight when mixed and heated with a peroxide such as a copolymer to increase fluidity, and (B) ethylene-propylene copolymer rubber, ethylene-propylene-nonconjugated diene Peroxide-crosslinked monoolefin copolymer rubber (soft segment), which crosslinks and reduces fluidity by mixing and heating with a peroxide such as an original copolymer rubber, (C)
Peroxide non-crosslinked hydrocarbon rubber (soft segment / fluidity-modifying component) that does not crosslink even when mixed and heated with peroxides such as polyisobutylene and butyl rubber and has constant fluidity, and (D) paraffinic and naphthene An olefin-based elastomer obtained by mixing a mineral oil-based softener such as an oil-based or aromatic oil-based softener and dynamically heat-treating the mixture in the presence of an organic peroxide. (A) is 90 to 40 parts by weight, (B) is 10 to 60 parts by weight.
(A) + (B) = 100 parts by weight,
(C) and / or (D) have a compounding ratio of 5 to 100 parts by weight.

(6) An olefin-based thermoplastic elastomer comprising an ethylene-styrene-butylene copolymer as described in JP-A-2-139232.

(7) The above-mentioned olefinic thermoplastic elastomer having a hydroxyl group and / or a carboxyl group as a polar group. For example, an olefin-based thermoplastic elastomer having a hydroxyl group introduced by graft polymerization of an ethylene-vinyl alcohol copolymer or the like and a carboxyl group introduced by a copolymer of maleic acid, fumaric acid, itaconic acid or the like is used. Either one or both of the hydroxyl group and the carboxyl group may be used in combination, and these polar groups have an effect of improving the adhesiveness with other layers such as a primer layer and an adhesive layer.

The above-mentioned polyolefin resin can be formed into a sheet (film) by a film forming method such as a calender method, an inflation method, a T-die extrusion method and the like. The thickness of the sheet to be used depends on the application and the like, but is about 20 to 300 μm. The polyolefin-based resin as described above is used to improve the adhesion (adhesion) to a primer layer formed on the front surface thereof and / or a blow-molded resin molded product laminated on the back surface thereof. Perform discharge treatment, ozone treatment, plasma treatment, etc.
It is preferable to add (generate) a polar functional group such as a hydroxyl group, a carboxyl group, or a carbonyl group to the front surface and / or the back surface. These polyolefin-based resin sheets can be used in any of a stretched sheet and an unstretched sheet.
The formability of the unstretched sheet is better. This sheet may contain, if necessary, fillers such as powders of calcium carbonate, barium sulfate, aluminum hydroxide, silica, etc., coloring agents, foaming agents, flame retardants, lubricants, antioxidants, ultraviolet absorbers, light stabilizers. And various other additives.

The base material layer may be colorless and transparent, but may be colored (transparent or opaque) by adding a coloring agent, if necessary. In particular, opaque coloring can prevent the color of the blow-molded resin from being seen through and adversely affecting the color tone of the decorative sheet. Examples of the coloring agent to be added include inorganic pigments such as titanium white, zinc white, red iron oxide, vermilion, ultramarine, cobalt blue, titanium yellow, graphite, carbon black, isoindolinone, Hansa Yellow A, quinacridone, and permanent red 4R.
Pearlescent luster composed of organic pigments (or dyes) such as phthalocyanine blue, indathrene blue RS, aniline black, etc., metal pigments composed of foil powders such as aluminum and brass, titanium dioxide coated mica, and foil powders such as basic lead carbonate (Pearl) pigment or the like is used. One or more colorants are used in combination.

[Primer Layer] The primer layer is a layer for improving the adhesion between the base layer and the pattern layer of urethane resin. Urethane resin is preferred for the primer layer. The primer layer may be composed of only one layer, but may be composed of two or more layers if necessary [FIG.
(See (A) and (B)). For the primer layer (for example, the primer layer 5a in FIG. 1) in contact with the picture layer, a urethane resin which emphasizes the adhesion to the picture layer is used, and for the primer layer (for example, the primer layer 5b in FIG. 1) in contact with the base material layer, By using a urethane resin that emphasizes the adhesion to the substrate layer, it is possible to improve the adhesion between the pattern layer and the substrate layer as a whole of the primer layer to an extent not possible with a single primer layer. it can. In this case, a coloring agent may be added to the primer layer in contact with the picture layer to be used as a colored solid layer. However, such a colored solid layer can also be regarded as an all solid layer of a solid pattern as a component of the picture layer.
Further, by adding a coloring agent to the primer layer, light can be absorbed by the primer layer, and the weather resistance of the lower layer (such as the base material layer or the second primer layer) can be improved.

As the urethane resin, a two-component curable urethane resin, a one-component curable urethane resin, or the like may be used.

The two-component curable urethane resin is a urethane resin containing polyol as a main component and isocyanate as a crosslinking agent (curing agent). The polyol has two or more hydroxyl groups in the molecule, and examples thereof include polyethylene glycol, polypropylene glycol, acrylic polyol, polyester polyol, polyether polyol, polycarbonate polyol, and polyurethane polyol. Also, as the isocyanate,
A polyvalent isocyanate having two or more isocyanate groups in the molecule is used. For example, 2,4-tolylene diisocyanate, xylene diisocyanate, 4,4 '
Aromatic isocyanates such as -diphenylmethane diisocyanate, or aliphatic (or alicyclic) isocyanates such as 1,6-hexamethylene diisocyanate, isophorone diisocyanate, hydrogenated tolylene diisocyanate, and hydrogenated diphenylmethane diisocyanate. Alternatively, adducts or multimers of the above various isocyanates can also be used. For example, there are an adduct of tolylene diisocyanate and a trimer of tolylene diisocyanate. The isocyanate is preferably aliphatic and alicyclic (including their adducts and multimers) from the viewpoint of weather resistance.

In a preferred embodiment of the two-component curable urethane resin, the number (mol number) of isocyanate groups (-NOC groups) in the isocyanate is changed to the number of hydroxyl groups (-OH groups) of the polyol to be reacted therewith. (Equivalent reaction equivalent) to ensure that unreacted isocyanate groups or hydroxyl groups remain even after the polyol reacts with the isocyanate. In this case, the ratio of -NCO group / -OH group is up to about 1.4 at the maximum. When the isocyanate group is excessive, the adhesion to another layer adjacent to the primer layer can be further improved. For example, a resin sheet is used as the base material layer and a polar functional group (hydroxyl group, carboxyl group, etc.) is provided on the surface as described above, and the resin of the picture layer formed thereon contains active hydrogen such as carboxyl group, hydroxyl group, etc. When a resin having a functional group is used, the adhesion between the primer layer and the interlayer becomes better due to urethane bonds between the interlayer and the pattern layer.

The one-component curable urethane resin is a composition containing a prepolymer having an isocyanate group at a molecular terminal as an essential component. The prepolymer is usually a polyisocyanate prepolymer having one or more isocyanate groups at both molecular terminals, and is a solid thermoplastic resin at room temperature. The isocyanate groups react with each other due to moisture in the air to cause a chain extension reaction. As a result, a reactant having a urea bond in the molecular chain is generated, and the isocyanate group at the molecular end further reacts with the urea bond. , Causing biuret bonding and branching to cause a crosslinking reaction. The skeleton structure of the molecular chain of the prepolymer having an isocyanate group at the molecular terminal is arbitrary, and specific examples include a polyurethane skeleton having a urethane bond, a polyester skeleton having an ester bond, and a polybutadiene skeleton.
One or more of these skeletal structures are appropriately employed. When a urethane bond is present in the molecular chain, the terminal isocyanate group also reacts with the urethane bond to generate an allophanate bond, which also causes a cross-linking reaction.

The primer layer may be formed by a known coating method such as roll coating or a known printing method.

[Pattern Layer] The pattern layer 4 is formed with ink by a known printing method such as gravure printing, offset printing, silk screen printing, and transfer printing from a transfer sheet. In the case of a solid pattern (colored solid layer) on the entire surface, it can be formed by a coating material by a known coating method such as gravure coating or roll coating. The pattern patterns of the picture layer include grain patterns, stone patterns, cloth patterns, squeezed patterns, geometric figures,
There are letters, symbols, or solid colors. As ink (or) paint, chlorinated polyolefin resin such as chlorinated polyethylene and chlorinated polypropylene, polyester resin, urethane resin composed of isocyanate and polyol, acrylic resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer One type or a mixture of two or more types may be used. Among these resins, particularly in the case of the present invention, since a polyolefin-based resin is used for the base material layer, a urethane resin is preferable from the viewpoint of the adhesion between the layers of the decorative sheet. As the urethane resin, a two-component curable urethane resin, a one-component curable urethane resin, or the like is preferably used as described in the above-mentioned primer layer. The isocyanate used is preferably an aliphatic or alicyclic isocyanate from the viewpoint of weather resistance. As the colorant used for the ink (or paint), for example, one or a mixture of two or more of the colorants as described in the above-described base layer is used.

In the case where the pattern layer formed as a decoration process is formed of a resin sheet, the transparent layer may be formed by a method other than forming the primer layer on the resin sheet by printing or the like. When the material layer is formed from a resin sheet, the material layer may be formed by printing after forming an adhesive layer on the resin sheet. In this case, the adhesive layer and the primer layer may be left as they are, but if the transparent base material side is used as a primer layer, and the base material layer side is used as an adhesive layer, and the adhesive layer and the primer layer are reversed, the adhesion point may be reduced. Is more preferable. This is because the adhesive layer is designed to exhibit good performance during dry lamination. However, in the case where the uneven pattern is formed on the transparent base material layer by embossing using heat and pressure, the transparent base material layer is preferably soft. Therefore, in this regard, the embossed pattern is not formed directly on the surface. Forming a pattern layer with respect to a base material layer that does not require importance or consideration of suitability is preferable because there is no elongation at the time of printing.

[Adhesive Layer] The adhesive layer 3 uses a urethane resin comprising a polyester polyol and an isocyanate. In particular, by using such a urethane resin,
When a transparent base material layer made of a polyolefin resin is used as a resin sheet and laminated on a polyolefin resin base material sheet serving as a base material layer by dry lamination, good lamination can be achieved. As polyester polyol,
For example, poly (ethylene adipate), poly (butylene adipate), poly (neopentyl adipate), poly (hexamethylene adipate), poly (butylene azelate), poly (butylene sebacate), polycaprolactone and the like are used. Also, as the isocyanate,
Various isocyanates are used as described for the primer layer. In terms of weather resistance, aliphatic isocyanates such as hexamethylene diisocyanate and isophorone diisocyanate and alicyclic isocyanates (including their adducts and multimers) are preferred. The adhesive may be formed by a known coating method such as roll coating or a known printing method. The thickness of the adhesive layer is not particularly limited as long as the adhesiveness improving effect can be obtained. However, the thickness is usually about 10 to 20 μm in consideration of air bite, adhesiveness, cost, and the like.

[Transparent Substrate Layer] For the transparent substrate layer 2, a transparent polyolefin resin is used. The transparent substrate layer may be colored. However, it is colored so as not to impair the transparency (to make the lower decorative layer transparent). For coloring, for example, a known coloring agent as described in the aforementioned base layer may be used. Such a transparent base material layer can be formed by laminating a polyolefin-based resin sheet (film) obtained by a film forming method such as a calendar method, an inflation method, and a T-die extrusion method. The thickness of the sheet to be used depends on the application and the like, but is about 20 to 300 μm. Further, as the polyolefin-based resin sheet, any of a stretched sheet and an unstretched sheet can be used, but the formability of the unstretched sheet is better. In the transparent base material layer, various additives such as a filler, a foaming agent, a flame retardant, a lubricant, an antioxidant, an ultraviolet absorber, and a light stabilizer are added, if necessary, in addition to the colorant. . For the transparent base material layer, the top coat layer on the front side, in order to improve the adhesiveness with the adhesive layer on the back side, to impart a polar functional group as described above in the base layer,
It is preferably applied to the front surface and / or the back surface.

In particular, since the transparent base material layer is closer to the front side than the above-described base material layer, it is preferable to add a weathering agent such as an ultraviolet absorber and a light stabilizer from the viewpoint of improving the weather resistance. For example, as an ultraviolet absorber, in addition to organic ultraviolet absorbers such as benzotriazole-based, benzophenone-based, and salicylic acid ester-based, inorganic substances such as zinc oxide, cerium oxide, and titanium oxide having a particle size of 0.2 μm or less are used. Can be used. As the light stabilizer, a hindered amine radical scavenger such as bis- (2,2,6,6-tetramethyl-4-piperidinyl) sebacate and a radical scavenger such as a piperidine radical scavenger can be used. The amount of each of these ultraviolet absorbers and light stabilizers is usually about 0.1 to 5% by weight. Usually, it is preferable to add both the ultraviolet absorber and the light stabilizer in combination.

[Uneven pattern] The uneven pattern 7 is made of a wood-grained board conduit groove, a stone board surface unevenness (granite cleavage plane, etc.), a tiled or brick-laid joint groove, a cloth surface texture, a satin finish, a grain, a hairline, a thread line. Grooves and the like. The uneven pattern may be a combination of these. The uneven pattern is hairline processing,
What is necessary is just to form by well-known shaping methods, such as sandblasting and embossing. For example, the embossing is performed by pressing an embossing plate on the surface of a heat-softened resin sheet to be a transparent base material layer using a hot press type sheet-fed or rotary embossing machine. The embossing of the resin sheet by heat and pressure is performed after or before laminating the resin sheet to be a transparent base layer and the base layer (resin sheet to be formed).
Alternatively, the concavo-convex pattern can be formed simultaneously with the formation of the resin sheet serving as the transparent base material layer. That is, for example, when a resin is melt-extruded from a T-die and cooled and solidified by a cooling roller to form a film, a roller having an uneven surface is used as the cooling roller. The uneven pattern 7 shown in FIG.
Is stopped in the transparent base material layer, but in the case of forming a concavo-convex pattern after laminating the base material layer and the transparent base material layer, a concavo-convex pattern reaching the base material layer may be formed. When only the pattern layer or the coloring of the pattern layer and the base material layer is sufficient as the decorative effect, it is not necessary to form the concavo-convex pattern, and in that case, it is not necessary to form a colored portion described later. It is.

[Coloring Portion] The coloring portion 8 is filled with a coloring ink into the concave portions of the uneven pattern by a known method such as a known wiping method (see Japanese Patent Publication No. 58-14312, etc.) and a valley print method. Can be formed. In the wiping method, a colored ink is applied to the entire surface of the concave and convex pattern, and thereafter, the ink in the convex portion is scraped off and the colored ink is left in the concave portion. The same resin as the binder resin of the above-mentioned pattern layer can be used for the colored ink to be the colored portion, but a urethane resin is particularly preferred in the present invention from the viewpoint of adhesion. As the urethane resin, a two-component curable urethane resin or a one-component curable urethane resin as described above for the primer layer is preferable. The isocyanate used for the urethane resin is preferably an aliphatic or alicyclic isocyanate such as hexamethylene diisocyanate or isophorone diisocyanate (including adducts and multimers thereof) from the viewpoint of weather resistance. As the polyol used for the urethane resin, an acrylic polyol is preferable in terms of weather resistance. The colored portion is formed after the uneven pattern is formed on the transparent base material layer.It may be after the transparent base material layer and the base material layer are laminated, or the transparent base material layer may be formed from a resin sheet. In the case where the concavo-convex pattern is already formed on the resin sheet before the formation and the lamination, the resin sheet may be formed before the lamination.

[Overcoat Layer] The overcoat layer 1 is a transparent layer for improving surface properties such as abrasion resistance and preventing blocking during storage of the blow-molding decorative sheet. A urethane resin composed of an acrylic polyol and a non-yellowing isocyanate is used for the overcoat layer, since it is the outermost surface layer, so that better weather resistance and heat resistance can be obtained. Non-yellowing isocyanates are used for the isocyanate component and acrylic polyols are used for the polyol component. The acrylic polyol is, for example, methyl (meth) acrylate, ethyl (meth) acrylate, (meth) acrylic acid-
Alkyl (meth) acrylates such as n-propyl, isopropyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, octyl (meth) acrylate, and ethylhexyl (meth) acrylate One or more kinds of monomers and the like, and (meth) acrylic acid-2-hydroxyethyl, (meth) acrylic acid-2
One or two types of (meth) acrylic acid ester monomers having a hydroxyl group in the molecule such as -hydroxypropyl, (meth) acrylic acid-2-hydroxy-3-phenoxypropyl, etc.
A polyol obtained by copolymerizing at least one species and, if necessary, a styrene monomer or the like, and having a plurality of hydroxyl groups. In addition, (meth) acryl means acryl or methacryl. As the non-yellowing isocyanate, an aliphatic isocyanate such as 1,6-hexamethylene diisocyanate, an alicyclic isocyanate such as isophorone diisocyanate, hydrogenated tolylene diisocyanate, and hydrogenated diphenylmethane diisocyanate are used. Alternatively, adducts or multimers of these isocyanates can also be used.

Since the topcoat layer is the outermost surface layer of the decorative sheet, it is particularly preferable to add a weathering agent such as an ultraviolet absorber and a light stabilizer from the viewpoint of improving the weatherability. As the ultraviolet absorber and the light stabilizer, the compounds as described in the above-mentioned transparent substrate layer can be used. In addition, the top coat layer may also optionally contain additives such as silica, spherical α-alumina, lubricants composed of particles such as flaky α-alumina, lubricants such as waxes, coloring agents, extenders and the like. . The overcoat layer may be formed by a known coating method such as roll coating or a known printing method. The thickness of the overcoat layer is usually about 1 to 10 μm in consideration of the balance between weather resistance and blocking resistance.

[Non-woven fabric] The non-woven fabric 9 is appropriately laminated on the back side of the decorative sheet, as required, as in the blow-molding simultaneous decorative sheet S illustrated in FIG. 1B. The blow molding simultaneous decorating sheet S of FIG. 1B is a decorative sheet having a configuration in which the nonwoven fabric 9 is further laminated on the back surface of the blow molding simultaneous decorating sheet S of FIG. 1A. is there. By providing the nonwoven fabric 9, the blow molding resin infiltrates between the fibers of the nonwoven fabric at the time of decoration by blow molding, so that even if the adhesion is insufficient without the nonwoven fabric, the adhesion can be improved. In addition, the air between the decorative sheet and the molding resin becomes easy to escape through the gap between the fibers of the nonwoven fabric at the time of the blow molding decoration, and the air is sandwiched between the blow molding simultaneous decoration sheet and the resin molded product. Residuals can be reduced. Polyethylene,
Polypropylene, polyester, vinylon, acrylic,
Nylon, rayon, synthetic resin fibers such as acetate,
Natural organic fibers such as cellulose and wool, or inorganic fibers made of glass, asbestos, potassium titanate, alumina, silica, carbon and the like are used. These are appropriately selected according to the resin material to be blow-molded. Above all,
When the blow-molded resin is a polyolefin-based resin, a nonwoven fabric made of a polyolefin-based resin fiber such as polyethylene or polypropylene is preferable. In order to laminate the nonwoven fabric on the back surface, the nonwoven fabric itself may be heat-sealed, or may be laminated by bonding with an adhesive such as urethane resin.

[Through Holes] Through holes (not shown) allow air to escape from the back side of the decorative sheet to the front side, thereby making it difficult for air to remain between the decorative sheet and the resin molded product. The shape of the through hole may be a circular cross section or another shape. The size of the through-hole should be at most 1 in the case of a circular cross section, taking into account the ventilation effect and the adverse effect on the appearance.
mm or less, preferably, for example, having a diameter of 0.05 to
It is about 0.5 mm. The surface density of the through holes is, for example, about one per 5 mm square. The arrangement of the through-holes may be a regular arrangement (two-dimensional arrangement at a constant pitch) or an irregular arrangement. However, the regular arrangement is more localized (in the irregular arrangement). Is preferred because it is unlikely that air bubbles are excessively opened and bubbles remain there. In short, if the maximum value of the spacing between through holes can be suppressed (even in irregular arrangement)
The maximum value of the interval is preferably set to about 5 mm or less.

[Backside Adhesive Layer] The blow molding simultaneous decorative sheet of the present invention is a decorative sheet particularly suitable when the blow molded resin is a polyolefin resin. Lamination can be performed with good adhesion without a layer. However, even in the case of a blow molding resin other than a polyolefin-based resin such as an ABS resin or a polyamide resin, the adhesion can be improved by providing a nonwoven fabric. However, in the case of another blow-molded resin, if the structure without the nonwoven fabric does not provide sufficient adhesion, a back surface adhesive layer made of an appropriate adhesive may be provided on the back surface of the decorative sheet. As the back adhesive layer, a known adhesive (including a pressure-sensitive adhesive) may be used depending on the molding resin, application, and the like. For example, as an adhesive, a polyolefin resin,
A heat-sensitive adhesive such as a vinyl acetate resin or a polyamide resin, a curable adhesive such as a urethane resin or an epoxy resin, or a rubber-based adhesive such as styrene-butadiene rubber may be used. In addition, in the case where the nonwoven fabric is not laminated on the back surface of the decorative sheet, even if the back surface adhesive layer is not provided on the back surface, or even if the back surface adhesive layer is provided, the corona discharge is applied to the back surface of the base material layer. An easy adhesion treatment such as a treatment or a plasma treatment may be performed.

Decorative blow-molded article: The decorative blow-molded article of the present invention is a molded article obtained by laminating the above blow-decorative simultaneous decorative sheet of the present invention on the surface of a blow-molded polyolefin resin molded article. Goods. Of course, the decorative sheet is laminated so that the upper coating layer side is the front side. The polyolefin-based resin of the resin molded product is a polyolefin-based resin such as polyethylene, polypropylene, polymethylpentene, polybutene, an ethylene-propylene copolymer, a propylene-butene copolymer, and an olefin-based thermoplastic elastomer. Polyolefin-based resins are inexpensive and more suitable in terms of environmental friendliness than vinyl chloride resins and the like which generate hydrogen chloride gas during waste combustion.

FIG. 2 shows an example of the decorative blow molded product of the present invention. The decorative blow-molded product M illustrated in FIG. 2 is an example of a footboard of a bed, and FIG.
2A is a front view, and FIG. 2B is a cross-sectional view taken along line AA in FIG. 2A. In the cross-sectional view of FIG. 2B, the decorating sheet S laminated on the surface of the resin molded product B is omitted because the illustration of the internal layer structure is omitted because it is complicated. 1 (A) and FIG. 1 (B), in which the base material layer is on the resin molded product B side. The decorative blow-molded product M in FIG. 2 is a hollow, roughly flat plate-shaped screen provided on the foot side of the bed. The blow molding simultaneous decorating sheet S is laminated on the central portion of the footboard.
FIG. 2 shows an example of a footboard, but a decorative blow-molded article similarly decorated can also be used for a headboard provided on the opposite bet head side.

In order to obtain the decorative blow-molded article of the present invention having such a configuration, the above-described sheet for simultaneous blow-molding and decorating is used in an irregular manner. The decorative sheet may be attached with an adhesive or the like. However, if the sheet for simultaneous blow molding and the sheet for simultaneous blow molding is laminated to the resin molded article by the simultaneous blow molding decoration, the blow molding and the lamination are completed in one step at the same time, and the productivity is excellent. This is preferable in that the adhesion between the decorative sheet and the resin molded product is also improved. of course,
Even with the decorative blow-molded product obtained by the former method, a decorative blow-molded product of high design can be obtained by the above-described sheet for simultaneous blow-molding and decoration.

By the way, by the simultaneous decoration of blow molding,
In order to obtain this decorative blow molded product, the blow molding simultaneous decorative sheet described above is fixed to the mold surface with the back side facing the blow molding resin side, and is arranged in a molding die. By performing blow molding using a parison in the same manner as known blow molding, a decorative blow molded product in which a sheet for simultaneous blow molding decoration is laminated on the surface of a resin molded product is obtained. In order to fix the blow molding simultaneous decorating sheet to the mold surface, a vacuum suction hole may be opened in the mold surface, and the decorating sheet may be vacuum-sucked.

[Use of blow-molded article] The use of the decorative blow-molded article obtained by using the sheet for simultaneous decorating with blow-molded article of the present invention or the decorative blow-molded article of the present invention is not particularly limited. Can be used for various purposes. For example, a bed,
Furniture such as desks, chests, cabinets for doors, sills, Kamoi, etc., light fixtures and OA equipment such as TV receivers, walls, ceilings,
It can be used for interior building materials of buildings such as floors, interior parts of various vehicles such as automobiles, trains, aircrafts and ships, or various containers such as storage boxes. In particular, the blow molded product is particularly suitable when the molding accuracy is low and the production quantity is not so large because the molding die is relatively inexpensive even if it is a large molded product.

[0049]

The present invention will be described in more detail with reference to the following examples.

Example 1 A sheet S for blow molding simultaneous decoration as shown in FIG. 1A was produced as follows. First, as a resin sheet serving as the base material layer 6, a hard segment mainly composed of isotactic polypropylene / a soft segment mainly composed of hydrogenated styrene-butadiene rubber =
A thickness of 8/2 (weight ratio) obtained by adding a coloring agent mainly composed of titanium white and a filler mainly composed of calcium carbonate powder to an olefin thermoplastic elastomer composed of 8/2 (weight ratio).
A colored resin sheet of 0 μm was prepared. After performing corona discharge treatment on both the front and back surfaces of the resin sheet, the entire surface of the resin sheet is subjected to gravure coating to obtain an elastomer type polyurethane polyol and isocyanate (1,6-hexamethylene diisocyanate and xylene diisocyanate in 1/9).
A primer layer 5b of a two-component curable urethane resin, which is composed of an acrylic polyol and 1,6-hexamethylene diisocyanate, and a coloring pigment and silica powder added thereto. A primer layer 5a (also serving as a colored solid layer) made of urethane resin was formed. Next, 2 composed of acrylic polyol and 1,6-hexamethylene diisocyanate
Using liquid-curable urethane resin as a binder,
A wood pattern pattern layer 4 was formed by gravure printing using an ink obtained by adding a coloring pigment containing carbon black and graphite as main components, to obtain a printing sheet.

Next, a coating liquid of a two-part curable urethane resin composed of polyester polyol and 1,6-hexamethylene diisocyanate was roll-coated on the pattern layer forming surface of the printed sheet to form an adhesive layer 3 having a thickness of 15 μm. A transparent resin sheet (thickness: 8) made of a polyolefin resin having the same composition as that of the base layer but containing no colorant and filler as the transparent base layer 2 is used.
0 μm), which had been subjected to corona discharge treatment on both front and back sides, was dry-laminated to form a laminated sheet.
Next, on the surface of the transparent base material layer of the laminated sheet, the concavo-convex pattern 7 of the wood conduit groove was formed by a roll embossing method using hot pressure. Next, wiping using a coloring ink in which a two-pack curable urethane resin composed of acrylic polyol and 1,6-hexamethylene diisocyanate is used as a binder and a coloring agent containing carbon black as a main component is added in the concave portion of the uneven pattern. The coloring portion 8 was formed by processing. Subsequently, a two-liquid curable urethane resin coating liquid comprising an acrylic polyol comprising a copolymer of methyl methacrylate and 2-hydroxyethyl methacrylate and a non-yellowing isocyanate of 1,6-hexamethylene diisocyanate is rolled. This was coated to form a colorless and transparent topcoat layer 1 having a thickness of 5 μm to obtain a blow molding simultaneous decorative sheet of the present invention.

Then, the above sheet for simultaneous decoration by blow molding was attached to the mold surface of the blow molding die by vacuum suction so that the base material layer faced the molding resin side. Next, using a polypropylene resin as the blow molding resin, the mold temperature 8
At 0 ° C, resin temperature 220 ° C, perform blow molding simultaneous decoration,
A decorative blow-molded product M as shown in FIG. 2 in which the blow molding simultaneous decorative sheet was laminated on the surface of the resin molded product was obtained. The decorative blow-molded product M is a part of a bed used as a headboard and a footboard. The decorative sheet adhered sufficiently to the resin molded product, and did not peel off between the layers inside the sheet, resulting in a highly designed molded product.

Example 2 The sheet for simultaneous decorating by blow molding of Example 1 was passed between a roller provided with a needle having a circular cross section and a rubber roller so as to be sandwiched between the front side and the decorative sheet. And through a needle, through holes arranged vertically and horizontally at an interval of 2 mm were formed. The through-hole had an average diameter of 0.2 mm. Then, a decorative blow molded product was obtained in the same manner as in Example 1. As in Example 1, the obtained decorative blow molded product was a highly designed molded product in which the decorative sheet adhered sufficiently to the resin molded product and did not peel off between layers inside the sheet. However, air bubbles between the decorative sheet and the resin molded product, which were slightly recognized in Example 1, were reduced. The sheet for decorative simultaneous blow molding of Example 1 was passed between a roller provided with needles having a length of 5 mm and having a circular cross section arranged vertically and horizontally at intervals of 2 mm and a rubber roller, and passed from the front side. A through hole was drilled through the needle. The through-hole had an average diameter of 0.2 mm. Then, a decorative blow molded product was obtained in the same manner as in Example 1. The decorative blow-molded product obtained, as in Example 1, the decorative sheet was sufficiently adhered to the resin molded product, and was not peeled off between layers inside the sheet.
It became a highly designed molded product. However, air bubbles between the decorative sheet and the resin molded product, which were slightly recognized in Example 1, were reduced.

Example 3 On the backside of the base material layer, a nonwoven fabric made of a polyolefin resin fiber was further applied to the blow molding simultaneous decorating sheet of Example 1 with a two-component curable urethane resin adhesive. It was used as a decorative sheet with a configuration of pasting.
Then, a decorative blow molded product was obtained in the same manner as in Example 1. As in Example 1, the obtained decorative blow molded product was a highly designed molded product in which the decorative sheet adhered sufficiently to the resin molded product and did not peel off between layers inside the sheet. However, the inclusion of bubbles between the decorative sheet and the resin molded product, which was slightly recognized in Example 1, was reduced.

[0055]

According to the blow molding simultaneous decorating sheet of the present invention, even if a picture layer is provided for decorating a high design, weather resistance and abrasion resistance against discoloration, delamination, etc. due to the overcoat layer are provided. In addition to having excellent surface physical properties and heat resistance, the overcoat layer and the transparent base material layer also provide good coating feeling and abrasion resistance. In addition, since the back side is a base material layer using a polyolefin resin, the blow molding resin of the polyolefin resin, which can be manufactured at a low cost, can be laminated to the resin molded article with good adhesion without an adhesive layer on the back surface. In addition, since both the base material layer and the transparent base material layer are polyolefin-based resins, they are environmentally friendly decorations for vinyl chloride resin, etc., which generate hydrogen chloride gas etc. during waste combustion. In addition to being a sheet, if it has a loose shape, the decorative sheet can be stretched and molded at the same time as the blow molding to decorate the sheet into a three-dimensional surface. Also, since each layer of the decorative sheet is made of a specific resin,
Excellent interlayer adhesion inside the sheet. Further, if a nonwoven fabric is laminated on the back side of the base material layer, the adhesion to the resin molded product is further improved. Further, if the through-holes penetrating all the layers of the sheet are regularly formed, the adhesion between the sheet and the resin molded product is further improved. In addition, by providing an uneven pattern and a colored portion on the surface side of the transparent base material layer, it is possible to decorate a high design with a high texture due to the unevenness. Further, the adhesion between the colored portion and the transparent resin layer and the overcoat layer adjacent thereto is also excellent. According to the decorative blow-molded product of the present invention, various effects obtained by the above-described sheet for simultaneous decorative blow-molding can be enjoyed. That is, a decorative blow molded article of high design with a high texture due to the pattern layer, the uneven pattern, and the unevenness due to the colored portion. Furthermore, the overcoat layer is excellent in weather resistance against discoloration, delamination, etc., surface physical properties such as abrasion resistance, and heat resistance, and the overcoat layer and the transparent substrate layer provide good coating feeling and abrasion resistance. Moreover, the back side of the laminated sheet for blow-molding and decorating is a base layer or a non-woven fabric using a polyolefin resin, and through holes are appropriately formed, so that the inexpensive polyolefin resin is used. Good adhesion to resin moldings. In addition, since both the base material layer of the decorative sheet and the base material layer of the transparent base material layer and the resin molded product are all polyolefin-based resins, vinyl chloride resin or the like which generates hydrogen chloride gas or the like at the time of waste combustion. In contrast, it becomes an environment-friendly decorative blow molded product. Moreover, if the decorative sheet has a formability and a loose shape, it is stretched and molded at the same time as blow molding and decorative, and the decorative blow-molded product is decorated by decorating the decorative sheet on a three-dimensional surface. It becomes possible.
Further, since each layer of the decorative sheet is made of a specific resin, the interlayer adhesion inside the sheet is excellent.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a blow molding simultaneous decorating sheet of the present invention.

FIG. 2 is an explanatory view showing one embodiment of a decorative blow molded product obtained by the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Overcoat layer 2 Transparent base material layer 3 Adhesive layer 4 Picture layer 5a Primer layer 5b Primer layer 6 Base material layer 7 Concavo-convex pattern 8 Colored part 9 Nonwoven fabric B Resin molding M Decorative blow molded article S Blow molding simultaneous decoration sheet

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) B29L 9:00 F term (reference) 4F100 AA08 AA08H AA20 AA20H AA21 AA21H AA37 AA37H AK03B AK03E AK07 AK51A AK51B AK51C AK51D AK62E AK66B AK66E AK73 AL09 AT00B AT00E BA05 BA07 BA10A BA10E BA13 CA13 CA30 CB02 DC11 DG15E EH46 EJ61 GB08 GB16 GB33 GB41 GB81 HB00B HB01 HB21B HB35C JJ03 JK06 JK09 JK14 AL12 JH14 A03B12

Claims (5)

[Claims] 1. A decorative molded sheet is laminated on a molded product by performing blow molding after setting a decorative sheet on a molding die during molding of a plastic molded product by blow molding. In the sheet for blow molding simultaneous decoration used for simultaneous blow molding decoration, in order from the front side, at least, an overcoat layer, a transparent base material layer, an adhesive layer, a picture layer, a primer layer, a base material layer are laminated in this order, And, the overcoat layer is a urethane resin composed of an acrylic polyol and a non-yellowing isocyanate, both the transparent substrate layer and the substrate layer are a polyolefin resin, the adhesive layer is a urethane resin composed of a polyester polyol and an isocyanate, and the picture layer is A blow molding simultaneous decorating sheet in which a urethane resin is used for the urethane resin and the primer layer. 2. The blow-molding simultaneous decorating sheet according to claim 1, wherein a nonwoven fabric is laminated on the back side of the base material layer. 3. The blow-molding simultaneous decorating sheet according to claim 1, wherein a through-hole penetrating all the layers of the sheet is provided. 4. The method according to claim 1, wherein an uneven pattern is formed on the surface side of the transparent base material layer, a colored portion is formed in a concave portion of the uneven pattern, and the colored portion is formed of a urethane resin. 3
The blow molding simultaneous decorating sheet according to any one of the above. 5. The blow molding simultaneous decorating sheet according to any one of claims 1 to 4, which is laminated on a resin molded product made of a blow molded polyolefin resin.
Decorative blow molded product.