JP7322375B2 - Decorative sheet and method for forming decorative sheet - Google Patents

Decorative sheet and method for forming decorative sheet Download PDF

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JP7322375B2
JP7322375B2 JP2018191838A JP2018191838A JP7322375B2 JP 7322375 B2 JP7322375 B2 JP 7322375B2 JP 2018191838 A JP2018191838 A JP 2018191838A JP 2018191838 A JP2018191838 A JP 2018191838A JP 7322375 B2 JP7322375 B2 JP 7322375B2
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decorative sheet
thickness
layer
base material
material layer
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JP2020059215A (en
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良介 高橋
速人 舩木
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Toppan Inc
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Toppan Inc
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Application filed by Toppan Inc filed Critical Toppan Inc
Priority to JP2018191838A priority Critical patent/JP7322375B2/en
Priority to EP21182665.6A priority patent/EP3909763A1/en
Priority to CN201980025055.9A priority patent/CN112203901A/en
Priority to EP19793213.0A priority patent/EP3785997B1/en
Priority to CN202311574231.9A priority patent/CN117382278A/en
Priority to EP23156776.9A priority patent/EP4205970A1/en
Priority to PCT/JP2019/017429 priority patent/WO2019208632A1/en
Publication of JP2020059215A publication Critical patent/JP2020059215A/en
Priority to US16/939,908 priority patent/US11660836B2/en
Priority to US17/824,493 priority patent/US11890845B2/en
Priority to US18/364,329 priority patent/US20230382077A1/en
Publication of JP7322375B2 publication Critical patent/JP7322375B2/en
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Description

本発明は、加飾シートに関する。 The present invention relates to a decorative sheet.

従来、例えば、ＡＢＳ基材層と、そのＡＢＳ基材層の表面側に設けられた原反層とを有する加飾シートが提案されている（例えば、特許文献１参照。）。特許文献１に記載の加飾シートでは、加飾シートをキャビティに挿入し、流動状態の樹脂をキャビティ内に充填して樹脂を固化し、固化した樹脂と加飾シートとを一体化することで、成形品を作製する。
しかしながら、特許文献１に記載の加飾シートでは、成形時のシート温度がバラついた場合、成形品における、加飾シートのシート厚がバラついてしまう可能性がある。 Conventionally, for example, a decorative sheet having an ABS base layer and a raw fabric layer provided on the surface side of the ABS base layer has been proposed (see, for example, Patent Document 1). In the decorative sheet described in Patent Document 1, the decorative sheet is inserted into a cavity, the cavity is filled with resin in a fluid state, the resin is solidified, and the solidified resin and the decorative sheet are integrated. , to produce a molded product.
However, with the decorative sheet described in Patent Document 1, if the sheet temperature during molding varies, the thickness of the decorative sheet may vary in the molded product.

特許第５０５５７０７号公報Japanese Patent No. 5055707

本発明は、上記のような問題点に着目してなされたもので、成形時のシート温度がバラついても、成形品におけるシート厚が安定する加飾シートを提供することを目的とする。 SUMMARY OF THE INVENTION It is an object of the present invention to provide a decorative sheet in which the thickness of the molded product is stable even if the sheet temperature varies during molding.

上記課題を解決するために、本発明の一態様は、（ａ）基材層と、（ｂ）基材層の表面側に設けられた原反層と、を備えた加飾シートであって、（ｃ）基材層は、ＡＢＳ樹脂を含み、（ｄ）加飾シートの総厚が、２５５μｍ以上５０５μｍ以下であり、（ｅ）原反層と基材層との厚さの比率が、１：１．５～１：５．５である加飾シートであることを要旨とする。 In order to solve the above problems, one aspect of the present invention is a decorative sheet comprising (a) a base layer and (b) a raw fabric layer provided on the surface side of the base layer, , (c) the base material layer contains an ABS resin, (d) the total thickness of the decorative sheet is 255 μm or more and 505 μm or less, and (e) the thickness ratio between the original fabric layer and the base material layer is The gist is that the decorative sheet has a ratio of 1:1.5 to 1:5.5.

本発明によれば、基材層と原反層との厚さ及びその比率が適切となるため、成形時のシート温度がバラついても、成形品におけるシート厚が安定する加飾シートを提供できる。 According to the present invention, the thickness and the ratio of the substrate layer and the raw fabric layer are appropriate, so that even if the sheet temperature varies during molding, the decorative sheet can provide a molded product with a stable sheet thickness. .

本発明の実施形態に係る加飾シートを表す断面図である。1 is a cross-sectional view showing a decorative sheet according to an embodiment of the invention; FIG. 加飾シートで作製した成形品の表面部を表す斜視図である。FIG. 3 is a perspective view showing a surface portion of a molded product made from a decorative sheet;

以下、本発明の実施形態に係る加飾シートについて、図面を参照しつつ説明する。本発明は、以下の実施形態に限定されるものではなく、当業者の知識を基に設計の変更等の変形を加えることも可能であり、そのような変形が加えられた形態も、本発明の範囲に含まれる。また、各図面は、理解を容易にするため適宜誇張して表現している。 A decorative sheet according to an embodiment of the present invention will be described below with reference to the drawings. The present invention is not limited to the following embodiments, and modifications such as design changes can be made based on the knowledge of those skilled in the art. included in the range of Each drawing is appropriately exaggerated to facilitate understanding.

（構成）
図１に示すように、本発明の実施形態に係る加飾シート１０は、基材層１と、基材層１の表面１ａ側に設けられた原反層２とを備えている。加飾シート１０の総厚は、加飾シート１０の表面強度及びハンドリング性の点から、２５５μｍ以上５０５μｍ以下が好ましい。また、原反層２と基材層１との厚さの比率は、加飾シート１０の成型性及び表面強度の点から、１：１．５～１：５．５が好ましい。特に、平坦部・角部のシート厚の安定及び外観異常の点から、加飾シート１０の総厚は２７５μｍ以上５０５μｍ以下で、且つ原反層２と基材層１との厚さの比率は１：２．５～１：４．５であることがより好ましい。 (composition)
As shown in FIG. 1, a decorative sheet 10 according to an embodiment of the present invention includes a substrate layer 1 and a raw fabric layer 2 provided on the surface 1a side of the substrate layer 1. As shown in FIG. The total thickness of the decorative sheet 10 is preferably 255 μm or more and 505 μm or less from the viewpoint of the surface strength and handling properties of the decorative sheet 10 . Also, the thickness ratio between the raw fabric layer 2 and the base material layer 1 is preferably 1:1.5 to 1:5.5 from the standpoint of moldability and surface strength of the decorative sheet 10 . In particular, from the standpoint of stabilizing the sheet thickness at the flat and corner portions and preventing appearance abnormalities, the total thickness of the decorative sheet 10 is 275 μm or more and 505 μm or less, and the ratio of the thickness of the original fabric layer 2 to the base material layer 1 is It is more preferably 1:2.5 to 1:4.5.

（基材層）
基材層１の材料としては、例えば、ＡＢＳ樹脂を用いることができる。ＡＢＳ樹脂としては、例えば、スチレン－アクロロニトリル共重合体とＮＢＲ（ニトリルゴム）とのポリマーブレンド型、ＢＲ（ポリブタジエンゴム）或いはＳＢＲ（スチレン・ブタジエンゴム）ラテックスの共存下にスチレンとアクリルニトリルをグラフと共重合させて得られるグラフト型を採用できる。ブタジエンの含有比率は、ブタジエンのゴムの性質による伸びやすさから、２０重量％以上５０重量％以下が好ましい。また、基材層１は、単層でもよく、複層でもよい。
また、基材層１の厚さは、１９６μｍ以上４１３μｍ以下が好ましい。 (Base material layer)
ABS resin, for example, can be used as the material of the base material layer 1 . ABS resins include, for example, a polymer blend type of styrene-acrylonitrile copolymer and NBR (nitrile rubber), and styrene and acrylonitrile in the coexistence of BR (polybutadiene rubber) or SBR (styrene-butadiene rubber) latex. A graft type obtained by copolymerizing with graph can be employed. The content of butadiene is preferably 20% by weight or more and 50% by weight or less because of the ease of elongation due to the properties of butadiene rubber. Further, the substrate layer 1 may be a single layer or multiple layers.
Moreover, the thickness of the base material layer 1 is preferably 196 μm or more and 413 μm or less.

（原反層）
原反層２の材料としては、ポリメタクリル酸メチル樹脂、ポリプロピレン樹脂、ポリ塩化ビニル樹脂を用いることができる。また、原反層２は、単層でもよく、複層でもよい。
また、原反層２の厚さは、５０μｍ以上１４４μｍ以下が好ましい。
（その他の層）
加飾シート１０は、従来の加飾シートと同様に、基材層１及び原反層２以外にも、例えば絵柄模様層３及び接着層４等を適宜備えるようにしてもよい。接着層４は基材層１の表面１ａ側に設けられ、絵柄模様層３は接着層４の表面４ａ側に設けられる。図１では、基材層１の表面１ａに、接着層４、絵柄模様層３及び原反層２がこの順に積層されている。 (Original fabric layer)
As a material for the raw fabric layer 2, polymethyl methacrylate resin, polypropylene resin, and polyvinyl chloride resin can be used. Moreover, the raw fabric layer 2 may be a single layer or a multilayer.
Moreover, the thickness of the raw fabric layer 2 is preferably 50 μm or more and 144 μm or less.
(Other layers)
The decorative sheet 10 may appropriately include, for example, a pattern layer 3 and an adhesive layer 4 in addition to the base material layer 1 and the raw fabric layer 2, like conventional decorative sheets. The adhesive layer 4 is provided on the surface 1a side of the base material layer 1, and the pattern layer 3 is provided on the surface 4a side of the adhesive layer 4. As shown in FIG. In FIG. 1, an adhesive layer 4, a pattern layer 3 and a raw fabric layer 2 are laminated in this order on the surface 1a of the base material layer 1. As shown in FIG.

（絵柄模様層）
絵柄模様層３は、加飾シート１０に絵柄による意匠性を付与するために、必要に応じて設けられる層である。絵柄模様層３は、印刷インキやコーティング剤等を用いて形成される。印刷インキ等としては、特に制限はなく、従来の加飾シートで絵柄模様層に使用されている印刷インキ等と同様のものを使用できる。例えば、アクリルインキを用いることができる。アクリルインキとしては、例えば、アクリルポリオール系ビヒクルにイソシアネート硬化剤を配合してなる２液硬化型ウレタン樹脂系インキを使用することができる。印刷方法としては、例えば、グラビア印刷法、オフセット印刷法を用いることができる。また、絵柄としては、任意の絵柄を用いることができ、例えば、木目柄、石目柄、布目柄、抽象柄、幾何学模様等或いはこれらの２種類以上の組み合わせ等を用いることできる。 (Pattern layer)
The picture pattern layer 3 is a layer provided as necessary in order to give the decorative sheet 10 a design with a picture. The pattern layer 3 is formed using printing ink, a coating agent, or the like. The printing ink or the like is not particularly limited, and the same printing ink or the like as used in the pattern layer of the conventional decorative sheet can be used. For example, acrylic ink can be used. As the acrylic ink, for example, a two-liquid curable urethane resin ink obtained by blending an isocyanate curing agent in an acrylic polyol vehicle can be used. As a printing method, for example, a gravure printing method or an offset printing method can be used. As the pattern, any pattern can be used, for example, a wood grain pattern, a stone pattern, a texture pattern, an abstract pattern, a geometric pattern, or a combination of two or more of these patterns can be used.

（接着層）
接着層４は、基材層１と原反層２とを接着させるために、必要に応じて設けられる層である。接着層４は、接着剤を用いて形成される。接着剤としては、特に制限はなく、従来の加飾シートで接着層に使用されている接着剤と同様のものを使用できる。例えば、アクリナール（ＬＳ＃３００２）にＶ４２４ポリ塩化ビニルプライマー（アクリル系、塩酢ビ系）を６０：４０～７０：３０の比率で配合したヒートシールを用いることができる。 (adhesive layer)
The adhesive layer 4 is a layer that is provided as necessary in order to bond the base material layer 1 and the raw fabric layer 2 together. The adhesive layer 4 is formed using an adhesive. The adhesive is not particularly limited, and the same adhesives as those used in the adhesive layer of conventional decorative sheets can be used. For example, a heat seal obtained by blending Acrynal (LS#3002) with V424 polyvinyl chloride primer (acrylic, vinyl chloride) at a ratio of 60:40 to 70:30 can be used.

（成形品の製造方法）
本発明の実施形態に係る加飾シート１０は、樹脂等からなる被着体に積層することで、被着体を加飾した成形品を作製することができる。成形品の製造方法としては、例えば、ＩＭＬ(Insert Molding Laminate)成型法、射出成形同時積層法、ＴＯＭ(Three dimension Overlay Method)成型法を用いることができる。例えば、ＩＭＬ成形法は、真空成型や圧空成型等を行って加飾シート１０で成形品の表面部を形成した後、表面部を形成する加飾シート１０を射出成形用金型に嵌め込み、加飾シート１０の裏面側に樹脂を射出して、樹脂（被着体）と加飾シート１０とを一体化することで、成形品を作製する方法である。 (Method for manufacturing molded article)
By laminating the decorative sheet 10 according to the embodiment of the present invention on an adherend made of resin or the like, it is possible to produce a molded product in which the adherend is decorated. As a method for manufacturing a molded product, for example, an IML (Insert Molding Laminate) molding method, an injection molding simultaneous lamination method, and a TOM (Three Dimension Overlay Method) molding method can be used. For example, in the IML molding method, after forming the surface of a molded product with the decorative sheet 10 by performing vacuum molding, pressure molding, or the like, the decorative sheet 10 forming the surface is fitted into a mold for injection molding, and the molding is performed. In this method, a molded product is produced by injecting a resin onto the back side of the decorative sheet 10 to integrate the resin (adherend) and the decorative sheet 10 .

以上説明したように、本発明の実施形態に係る加飾シート１０は、基材層１と、基材層１の表面１ａ側に設けられた原反層２と、を備えた加飾シート１０である。また、基材層１は、ＡＢＳ樹脂を含む。そして、加飾シート１０の総厚が、２５５μｍ以上５０５μｍ以下であり、原反層２と基材層１との厚さの比率が、１：１．５～１：５．５である。それゆえ、基材層１と原反層２との厚さ及びその比率が適切となるため、成形時のシート温度がバラついても、成形品におけるシート厚が安定する加飾シート１０を提供できる。
また、例えば、加飾シート１０の各部で温度のバラつきが生じても、極端に伸ばされる箇所の発生等を防止することができ、加飾シート１０の厚さの不均一を防止することができる。それゆえ、成形可能温度の範囲が広い加飾シート１０を提供することができる。 As described above, the decorative sheet 10 according to the embodiment of the present invention includes the base material layer 1 and the raw fabric layer 2 provided on the surface 1a side of the base material layer 1. is. Moreover, the base material layer 1 contains ABS resin. The total thickness of the decorative sheet 10 is 255 μm or more and 505 μm or less, and the thickness ratio of the original fabric layer 2 and the base material layer 1 is 1:1.5 to 1:5.5. Therefore, the thickness and the ratio of the base material layer 1 and the raw fabric layer 2 are appropriate, so that the decorative sheet 10 in which the sheet thickness is stable in the molded product can be provided even if the sheet temperature during molding varies. .
Further, for example, even if the temperature varies in each part of the decorative sheet 10, it is possible to prevent the occurrence of excessive stretching of the decorative sheet 10, and to prevent the thickness of the decorative sheet 10 from becoming non-uniform. . Therefore, it is possible to provide the decorative sheet 10 having a wide moldable temperature range.

また、成形機や成形条件が変化したとしても、成形性を安定させることができる。
そして、厚さが不均一になり難い加飾シート１０を用いることにより、成形品に置いて箇所ごとに強度が異なることを防止でき、また、意匠の変化も防止することができる。
ちなみに、加飾シート１０の総厚が２５５より小さい場合には、加飾シート１０の表面強度が弱くなる。また、加飾シート１０の総厚が５０５より大きい場合には、加飾シート１０のハンドリング性が悪くなる。さらに、原反層２の厚さに対して基材層１の厚さの比率が１．５より小さい場合には、成形性が悪くなる。また、原反層２の厚さに対して基材層１の厚さの比率が５．５より大きい場合には、加飾シート１０の表面強度が弱くなる。 Further, even if the molding machine or molding conditions are changed, the moldability can be stabilized.
In addition, by using the decorative sheet 10 whose thickness is less likely to be uneven, it is possible to prevent the strength from varying from one part to another on the molded product, and also prevent the design from changing.
Incidentally, when the total thickness of the decorative sheet 10 is less than 255 mm, the surface strength of the decorative sheet 10 becomes weak. Also, if the total thickness of the decorative sheet 10 is greater than 505, the decorative sheet 10 is difficult to handle. Furthermore, if the ratio of the thickness of the base material layer 1 to the thickness of the raw fabric layer 2 is less than 1.5, the moldability is deteriorated. Moreover, when the ratio of the thickness of the base material layer 1 to the thickness of the raw fabric layer 2 is more than 5.5, the surface strength of the decorative sheet 10 is weakened.

以下に、本発明の実施形態に係る加飾シート１０の実施例及び比較例について説明する。なお、本発明は、下記の実施例に限定されるものではない。
（実施例１）
まず、原反層２として、アクリルフィルム原反を用意した。アクリルフィルム原反の厚さは、１２５μｍとした。また、基材層１として、ＡＢＳ基材を用意した。ＡＢＳ基材の厚さは、３８０μｍとした。そして、アクリルフィルム原反とＡＢＳ基材とを熱ラミネートして、総厚５０５μｍの加飾シート１０を作製した。続いて、加飾シート１０を、ＴＯＭ成形機（布施真空製「ＮＧＦ－０４０６－Ｔ」を用い、真空環境で設定温度まで加熱した後、加飾シート１０の片面に圧空成型を行った。設定温度（成形温度）は、１００℃、１１０℃、１２０℃の三種類とした。圧空成型では、図２に示すように、側面視がＬ字状となり、平面視が長方形状となり、１Ｒの角部と４Ｒの角部とを有する形状に形成した。
これにより、ＩＭＬ成形法で用いられる、成形品の表面部を作製した。 Examples and comparative examples of the decorative sheet 10 according to the embodiment of the present invention are described below. In addition, the present invention is not limited to the following examples.
(Example 1)
First, as the raw layer 2, an acrylic film raw was prepared. The thickness of the original acrylic film was 125 μm. Also, as the base material layer 1, an ABS base material was prepared. The thickness of the ABS base material was 380 μm. Then, the raw acrylic film and the ABS base material were thermally laminated to produce a decorative sheet 10 having a total thickness of 505 μm. Subsequently, the decorative sheet 10 was heated to a set temperature in a vacuum environment using a TOM forming machine (“NGF-0406-T” manufactured by Fuse Vacuum Co., Ltd.), and pressure molding was performed on one side of the decorative sheet 10. Set. There were three temperatures (molding temperatures): 100° C., 110° C., and 120° C. In the pressure molding, as shown in FIG. It was formed into a shape having a portion and 4R corners.
As a result, the surface portion of the molded article used in the IML molding method was produced.

（実施例２）
実施例２では、原反層２の厚さを７５μｍとし、基材層１の厚さを２００μｍとして、加飾シート１０の総厚を２７５μmとした。それ以外は、実施例１と同じ条件で加飾シート１０を作製し、さらに、成形品の表面部を作製した。
（実施例３）
実施例３では、原反層２として、ポリプロピレン原反を用いた。また、原反層２の厚さを９０μｍとし、基材層１の厚さを３８０μｍとして、加飾シート１０の総厚を４７０μmとした。それ以外は、実施例１と同じ条件で加飾シート１０を作製し、さらに、成形品の表面部を作製した。 (Example 2)
In Example 2, the thickness of the raw fabric layer 2 was set to 75 μm, the thickness of the base material layer 1 was set to 200 μm, and the total thickness of the decorative sheet 10 was set to 275 μm. Other than that, the decorative sheet 10 was produced under the same conditions as in Example 1, and furthermore, the surface portion of the molded article was produced.
(Example 3)
In Example 3, a polypropylene raw fabric was used as the raw fabric layer 2 . Further, the thickness of the raw fabric layer 2 was set to 90 μm, the thickness of the base material layer 1 was set to 380 μm, and the total thickness of the decorative sheet 10 was set to 470 μm. Other than that, the decorative sheet 10 was produced under the same conditions as in Example 1, and furthermore, the surface portion of the molded article was produced.

（実施例４）
実施例４では、原反層２として、厚さ７５μｍのアクリルフィルム原反と厚さ４０μｍのポリ塩化ビニル樹脂とを積層した積層体を用いた。また、基材層１の厚さを３８０μｍとして、加飾シート１０の総厚を４９５μmとした。それ以外は、実施例１と同じ条件で加飾シート１０を作製し、さらに、成形品の表面部を作製した。
（実施例５）
実施例５では、原反層２の厚さを１２５μｍとし、基材層１の厚さを２００μｍとして、加飾シート１０の総厚を３２５μmとした。それ以外は、実施例１と同じ条件で加飾シート１０を作製し、さらに、成形品の表面部を作製した。 (Example 4)
In Example 4, a laminate obtained by laminating a 75 μm-thick acrylic film original and a 40 μm-thick polyvinyl chloride resin was used as the original fabric layer 2 . Moreover, the thickness of the base material layer 1 was set to 380 μm, and the total thickness of the decorative sheet 10 was set to 495 μm. Other than that, the decorative sheet 10 was produced under the same conditions as in Example 1, and furthermore, the surface portion of the molded article was produced.
(Example 5)
In Example 5, the thickness of the raw fabric layer 2 was set to 125 μm, the thickness of the base material layer 1 was set to 200 μm, and the total thickness of the decorative sheet 10 was set to 325 μm. Other than that, the decorative sheet 10 was produced under the same conditions as in Example 1, and furthermore, the surface portion of the molded article was produced.

（実施例６）
実施例６では、原反層２の厚さを７５μｍとし、基材層１の厚さを４００μｍとして、加飾シート１０の総厚を４７５μmとした。それ以外は、実施例１と同じ条件で加飾シート１０を作製し、さらに、成形品の表面部を作製した。
（実施例７）
実施例７では、原反層２の厚さを７５μｍとし、基材層１の厚さを１８０μｍとして、加飾シート１０の総厚を２５５μmとした。それ以外は、実施例１と同じ条件で加飾シート１０を作製し、さらに、成形品の表面部を作製した。 (Example 6)
In Example 6, the thickness of the raw fabric layer 2 was set to 75 μm, the thickness of the base material layer 1 was set to 400 μm, and the total thickness of the decorative sheet 10 was set to 475 μm. Other than that, the decorative sheet 10 was produced under the same conditions as in Example 1, and furthermore, the surface portion of the molded article was produced.
(Example 7)
In Example 7, the thickness of the raw fabric layer 2 was set to 75 μm, the thickness of the base material layer 1 was set to 180 μm, and the total thickness of the decorative sheet 10 was set to 255 μm. Other than that, the decorative sheet 10 was produced under the same conditions as in Example 1, and furthermore, the surface portion of the molded article was produced.

（比較例１）
比較例１では、原反層２として、ポリプロピレン原反を用いた。また、基材層１として、ＰＥＴＧ基材を用いた。また、原反層２の厚さを１６０μｍとし、基材層１の厚さを３５０μｍとして、加飾シート１０の総厚を５１０μmとした。それ以外は、実施例１と同じ条件で加飾シート１０を作製し、さらに、成形品の表面部を作製した。
（比較例２）
比較例２では、基材層１として、ＰＥＴＧ基材を用いた。また、原反層２の厚さを１２５μｍとし、基材層１の厚さを１２０μｍとして、加飾シート１０の総厚を２４５μmとした。それ以外は、実施例１と同じ条件で加飾シート１０を作製し、さらに、成形品の表面部を作製した。 (Comparative example 1)
In Comparative Example 1, a polypropylene raw fabric was used as the raw fabric layer 2 . A PETG base material was used as the base material layer 1 . Further, the thickness of the raw fabric layer 2 was set to 160 μm, the thickness of the base material layer 1 was set to 350 μm, and the total thickness of the decorative sheet 10 was set to 510 μm. Other than that, the decorative sheet 10 was produced under the same conditions as in Example 1, and furthermore, the surface portion of the molded article was produced.
(Comparative example 2)
In Comparative Example 2, a PETG base material was used as the base material layer 1 . Further, the thickness of the raw fabric layer 2 was set to 125 μm, the thickness of the base material layer 1 was set to 120 μm, and the total thickness of the decorative sheet 10 was set to 245 μm. Other than that, the decorative sheet 10 was produced under the same conditions as in Example 1, and furthermore, the surface portion of the molded article was produced.

（比較例３）
比較例３では、原反層２の厚さを５０μｍとし、基材層１の厚さを１８０μｍとして、加飾シート１０の総厚を２３０μmとした。それ以外は、実施例１と同じ条件で加飾シート１０を作製し、さらに、成形品の表面部を作製した。
（比較例４）
比較例４では、原反層２の厚さを１２５μｍとし、基材層１の厚さを４００μｍとして、加飾シート１０の総厚を５２５μmとした。それ以外は、実施例１と同じ条件で加飾シート１０を作製し、さらに、成形品の表面部を作製した。 (Comparative Example 3)
In Comparative Example 3, the thickness of the raw fabric layer 2 was set to 50 μm, the thickness of the base material layer 1 was set to 180 μm, and the total thickness of the decorative sheet 10 was set to 230 μm. Other than that, the decorative sheet 10 was produced under the same conditions as in Example 1, and furthermore, the surface portion of the molded article was produced.
(Comparative Example 4)
In Comparative Example 4, the thickness of the raw fabric layer 2 was set to 125 μm, the thickness of the base material layer 1 was set to 400 μm, and the total thickness of the decorative sheet 10 was set to 525 μm. Other than that, the decorative sheet 10 was produced under the same conditions as in Example 1, and furthermore, the surface portion of the molded article was produced.

（比較例５）
比較例５では、原反層２の厚さを１２５μｍとし、基材層１の厚さを１８０μｍとして、加飾シート１０の総厚を３０５μmとした。それ以外は、実施例１と同じ条件で加飾シート１０を作製し、さらに、成形品の表面部を作製した。
（比較例６）
比較例６では、原反層２の厚さを５０μｍとし、基材層１の厚さを３００μｍとして、加飾シート１０の総厚を３５０μmとした。それ以外は、実施例１と同じ条件で加飾シート１０を作製し、さらに、成形品の表面部を作製した。 (Comparative Example 5)
In Comparative Example 5, the thickness of the raw fabric layer 2 was set to 125 μm, the thickness of the base material layer 1 was set to 180 μm, and the total thickness of the decorative sheet 10 was set to 305 μm. Other than that, the decorative sheet 10 was produced under the same conditions as in Example 1, and furthermore, the surface portion of the molded article was produced.
(Comparative Example 6)
In Comparative Example 6, the thickness of the raw fabric layer 2 was set to 50 μm, the thickness of the base material layer 1 was set to 300 μm, and the total thickness of the decorative sheet 10 was set to 350 μm. Other than that, the decorative sheet 10 was produced under the same conditions as in Example 1, and furthermore, the surface portion of the molded article was produced.

（性能評価）
実施例１～７、比較例１～６の加飾シート１０に対して、以下の性能評価を行った。
（第１の厚さ試験）
第１の厚さ試験では、成形時に加飾シート１０の温度がバラついても、成形品におけるシート厚が安定するかを試験した。具体的には、設定温度（成形温度）１００℃で成形した加飾シート１０の厚さと、成形温度１１０℃で成形した加飾シート１０の厚さとの差を算出した。また、成形温度１２０℃で成形した加飾シート１０の厚さと、成形温度１１０℃で成形した加飾シート１０の厚さとの差を算出した。そして、差が±１５％の範囲内である場合を合格「○」とし、±１５％の範囲外である場合を不合格「×」とした。 (performance evaluation)
The following performance evaluations were performed on the decorative sheets 10 of Examples 1-7 and Comparative Examples 1-6.
(First thickness test)
In the first thickness test, it was tested whether the sheet thickness of the molded product is stable even if the temperature of the decorative sheet 10 fluctuates during molding. Specifically, the difference between the thickness of the decorative sheet 10 molded at a set temperature (molding temperature) of 100° C. and the thickness of the decorative sheet 10 molded at a molding temperature of 110° C. was calculated. Also, the difference between the thickness of the decorative sheet 10 molded at a molding temperature of 120° C. and the thickness of the decorative sheet 10 molded at a molding temperature of 110° C. was calculated. When the difference was within the range of ±15%, it was evaluated as "good", and when it was out of the range of ±15%, it was evaluated as "poor".

なお、加飾シート１０の厚さの測定では、成形品の上面（平坦部）に対しては、デジタルマイクロメーター（ミツトヨ製）を使用し、成形品の角部（湾曲部）に対しては、ポイントデジタルマイクロメーター（新潟精機製「ＭＣＤ２３２－２５Ｐ」を使用した。そして、ＪＩＳ Ｋ ７１３０ Ａの厚さ測定方法に準じて、１１０℃で成形した加飾シート１０、つまり、成形品の上面（最もシートが伸ばされていない箇所）の厚さを１００％として、成形品の上面から側面にかけた角部の厚さを測定し、この値をセンター値として、±１０℃（１００℃、１２０℃）で成形した加飾シート１０（成形品）の厚さを測定した。 In addition, in measuring the thickness of the decorative sheet 10, a digital micrometer (manufactured by Mitutoyo) is used for the top surface (flat portion) of the molded product, and for the corner portion (curved portion) of the molded product, , A point digital micrometer (“MCD232-25P” manufactured by Niigata Seiki Co., Ltd. was used. And, according to the thickness measurement method of JIS K 7130 A, the decorative sheet 10 molded at 110 ° C., that is, the upper surface of the molded product ( The thickness of the part where the sheet is least stretched) is set to 100%, and the thickness of the corner from the top surface to the side of the molded product is measured. ), the thickness of the decorative sheet 10 (molded article) was measured.

（外観試験）
外観試験では、成形時に加飾シート１０の温度がバラついても、成形品の外観に異常が発生しないかを試験した。そして、外観に発泡、クラック、白化等の異常が発生しなければ合格「○」とし、発泡、クラック、白化等の異常が発生すれば不合格「×」とした。
（第２の厚さ試験）
第２の厚さ試験では、成形温度（１００℃、１１０℃、１２０℃）が異なる成形品毎に１Ｒの角部の厚さと４Ｒの角部の厚さとの差を算出した。そして、差が±５０μｍの範囲内にある場合を合格「○」とし、±５０μｍの範囲外にある場合を不合格「×」とした。 (Appearance test)
In the appearance test, even if the temperature of the decorative sheet 10 fluctuates during molding, it was tested whether the appearance of the molded product would be abnormal. If no abnormality such as blistering, cracking, or whitening occurred in the appearance, the sample was rated as acceptable.
(Second thickness test)
In the second thickness test, the difference between the thickness of the 1R corner portion and the thickness of the 4R corner portion was calculated for each molded product with different molding temperatures (100° C., 110° C., 120° C.). When the difference was within the range of ±50 μm, it was evaluated as “good”, and when it was out of the range of ±50 μm, it was evaluated as “failed”.

（コインスクラッチ試験）
コインスクラッチ試験では、成形品の上面（平坦部分）の加飾シート１０を２ｋｇの荷重をかけたコインで引っ掻いた。そして、加飾シート１０に傷がつかなかった場合を合格「◎」とし、薄い線状の傷がついた場合を合格「○」とし、線状の傷よりも深い傷であるが浅い場合を不合格「△」とし、深い傷がついた場合を不合格「×」とした。
（評価結果）
これらの評価結果を表１、表２、表３に示す。 (Coin scratch test)
In the coin scratch test, the decorative sheet 10 on the upper surface (flat portion) of the molded product was scratched with a coin with a load of 2 kg applied. If the decorative sheet 10 was not scratched, it was evaluated as "good". It was set as failure "△", and the case where there was a deep scratch was set as failure "x".
(Evaluation results)
These evaluation results are shown in Tables 1, 2 and 3.

Figure 0007322375000001
Figure 0007322375000001

Figure 0007322375000002
Figure 0007322375000002

Figure 0007322375000003
Figure 0007322375000003

表１～表３に示すように、実施例１～７の加飾シート１０では、第１の厚さ試験の結果、及び外観試験の結果による第１の判定結果は、合格「◎」「○」「△」となった。また、第２の厚さ試験の結果による第２の判定結果も、合格「◎」「○」「△」となった。さらに、コインスクラッチ試験による判定結果も、合格「◎」「○」となった。
一方、比較例１～６の加飾シート１０では、第１厚さ試験の結果、及び外観試験の結果による第１の判定結果は、不合格「×」となった。また、第２の厚さ試験の結果による第２の判定結果も、不合格「×」となった。さらに、コインスクラッチ試験による判定結果は、比較例１、２、４、５の加飾シートで１０は合格「○」となったが、比較例３の加飾シート１０では「△」の合格、比較例６の加飾シート１０では、不合格「×」となった。 As shown in Tables 1 to 3, in the decorative sheets 10 of Examples 1 to 7, the results of the first thickness test and the results of the first judgment based on the results of the appearance test were "passed" and "good". ” and “△”. In addition, the second judgment results based on the results of the second thickness test were also "good", "good", and "triangle". Furthermore, the judgment result of the coin scratch test was also "good" and "good".
On the other hand, in the decorative sheets 10 of Comparative Examples 1 to 6, the results of the first thickness test and the first determination result of the appearance test were "NG". In addition, the second judgment result based on the result of the second thickness test was also disqualified "x". Furthermore, the judgment result of the coin scratch test was that the decorative sheets 10 of Comparative Examples 1, 2, 4, and 5 passed "○", but the decorative sheet 10 of Comparative Example 3 passed "△". The decorative sheet 10 of Comparative Example 6 was disqualified "x".

したがって、実施例１～７の加飾シート１０は、比較例１～６の加飾シート１０に比べ、成形時のシート温度がバラついても、成形品におけるシート厚が安定することが確認できた。また、加飾シート１０の各部で温度のバラつきが生じても、極端に伸ばされる箇所の発生等を防止でき、加飾シート１０の厚さの不均一を防止できることが確認できた。
また、実施例１、２の加飾シート１０、つまり加飾シート１０の総厚が２５５μｍ以上５０５μｍ以下であり、原反層２と基材層１との厚さの比率が、１：１．５～１：５．５である加飾シート１０では、第１の判定結果、第２の判定結果及びコインスクラッチ試験の全てが「◎」となることが確認できた。また、実施例１～７の加飾シート１０は、比較例３、６の加飾シート１０に比べ、表面強度が強く、耐傷性に優れることが確認できた。 Therefore, it was confirmed that the decorative sheets 10 of Examples 1 to 7 have a stable sheet thickness in molded products compared to the decorative sheets 10 of Comparative Examples 1 to 6 even if the sheet temperature varies during molding. . It was also confirmed that even if the temperature of each part of the decorative sheet 10 varies, it is possible to prevent the occurrence of excessively stretched parts, and to prevent the thickness of the decorative sheet 10 from becoming non-uniform.
Further, the decorative sheet 10 of Examples 1 and 2, that is, the total thickness of the decorative sheet 10 is 255 μm or more and 505 μm or less, and the thickness ratio of the raw fabric layer 2 and the base material layer 1 is 1:1. It was confirmed that the decorative sheet 10 with a ratio of 5 to 1:5.5 was "excellent" in all of the first judgment result, the second judgment result, and the coin scratch test. Further, it was confirmed that the decorative sheets 10 of Examples 1 to 7 had higher surface strength and superior scratch resistance than the decorative sheets 10 of Comparative Examples 3 and 6.

１…基材層、１ａ…表面、２…原反層、３…絵柄模様層、４…接着層、４ａ…表面、１０…加飾シート DESCRIPTION OF SYMBOLS 1... Base material layer 1a... Surface 2... Original fabric layer 3... Pattern layer 4... Adhesive layer 4a... Surface 10... Decorative sheet

Claims (3)

基材層と、
前記基材層の表面側に設けられた原反層と、を備えた加飾シートであって、
前記基材層は、ＡＢＳ樹脂を含み、
前記原反層は、アクリルフィルム原反であり、
前記加飾シートの総厚が、２７５μｍ以上５０５μｍ以下であり、
前記原反層と前記基材層との厚さの比率が、１：２．５～１：４．５であることを特徴とする加飾シート。 a substrate layer;
A decorative sheet comprising a raw fabric layer provided on the surface side of the base material layer,
The base material layer contains an ABS resin,
The original fabric layer is an acrylic film original fabric,
The decorative sheet has a total thickness of 275 μm or more and 505 μm or less,
A decorative sheet, wherein the thickness ratio of the raw fabric layer and the base material layer is 1:2.5 to 1:4.5. 基材層と、a base layer;
前記基材層の表面側に設けられた原反層と、を備えた加飾シートであって、A decorative sheet comprising a raw fabric layer provided on the surface side of the base material layer,
前記基材層は、ＡＢＳ樹脂を含み、The base material layer contains an ABS resin,
前記原反層は、ポリプロピレン原反であり、The original fabric layer is a polypropylene original fabric,
前記加飾シートの総厚が、２７５μｍ以上５０５μｍ以下であり、The decorative sheet has a total thickness of 275 μm or more and 505 μm or less,
前記原反層と前記基材層との厚さの比率が、１：２．５～１：４．５であることを特徴とする加飾シート。A decorative sheet, wherein the thickness ratio of the raw fabric layer and the base material layer is 1:2.5 to 1:4.5. 請求項１又は２に記載の加飾シートを加熱して成形品の表面部を成形する加飾シートの成形方法であって、A decorative sheet molding method for heating the decorative sheet according to claim 1 or 2 to form a surface portion of a molded product,
成形時の前記加飾シートの各部の温度のバラつきを±１０℃以内に収まるようにする加飾シートの成形方法。A molding method for a decorative sheet, wherein the variation in temperature of each part of the decorative sheet during molding is kept within ±10°C.
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JP2015163479A (en) 2015-04-20 2015-09-10 大日本印刷株式会社 Decorative sheet and decorative resin molded article using the same
JP2017177728A (en) 2016-03-31 2017-10-05 大日本印刷株式会社 Decorative sheet and manufacturing method of decorative resin molded article
JP2018052089A (en) 2016-09-30 2018-04-05 大日本印刷株式会社 Decorative sheet for three-dimensional molding, decorative resin molded article and manufacturing method of decorative resin molded article

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