JPS63251431A - Thermochromic plastic molding - Google Patents
Thermochromic plastic moldingInfo
- Publication number
- JPS63251431A JPS63251431A JP8739487A JP8739487A JPS63251431A JP S63251431 A JPS63251431 A JP S63251431A JP 8739487 A JP8739487 A JP 8739487A JP 8739487 A JP8739487 A JP 8739487A JP S63251431 A JPS63251431 A JP S63251431A
- Authority
- JP
- Japan
- Prior art keywords
- plastic
- thermochromic
- added
- plastic molded
- color
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010137 moulding (plastic) Methods 0.000 title abstract 3
- 239000004033 plastic Substances 0.000 claims abstract description 49
- 229920003023 plastic Polymers 0.000 claims abstract description 49
- 239000003086 colorant Substances 0.000 claims abstract description 25
- 239000000975 dye Substances 0.000 claims description 25
- 238000000465 moulding Methods 0.000 abstract description 6
- 239000000049 pigment Substances 0.000 abstract description 4
- 239000004594 Masterbatch (MB) Substances 0.000 description 12
- -1 Polypropylene Polymers 0.000 description 12
- 239000004743 Polypropylene Substances 0.000 description 8
- 229920001155 polypropylene Polymers 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000002845 discoloration Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010902 straw Substances 0.000 description 3
- 235000019646 color tone Nutrition 0.000 description 2
- 239000005457 ice water Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002991 molded plastic Substances 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000014214 soft drink Nutrition 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
発明の目的 Purpose of invention
本発明は、温度により色彩や模様が変化するプラスチッ
ク成形品に関する。The present invention relates to plastic molded products whose colors and patterns change depending on temperature.
たとえばホットコーヒーを入れたり氷水や清涼飲料を入
れたりすることにより、温めたり冷したりすると、色調
が変化したり絵が浮き出してきたりする容器がある。
従来のこの種の容器の多くは、たとえばガラスやプラス
チックのカップに１種または２種以上の色の絵柄を設け
た程度であって、それらが発色したり消色したりするだ
けのものである。For example, there are containers whose color tone changes or pictures come out when they are heated or cooled by pouring hot coffee, ice water, or soft drinks into them. Most of the conventional containers of this kind are simply a glass or plastic cup with one or more colored patterns on them, and the colors change on and off. .
本発明の目的は、このような状況から一歩前進して、感
温変色性色素を一般の着色剤と組み合わせて利用するこ
とにより、従来のものよりバラエティに富んだ色の変化
を楽しめるようにした感温変色プラスチック成形品を提
供することにある。
発明の構成The purpose of the present invention is to take a step forward from this situation and make it possible to enjoy a greater variety of color changes than with conventional methods by using thermochromic dyes in combination with general coloring agents. Our objective is to provide thermosensitive color-changing plastic molded products. Composition of the invention
本発明の感温変色プラスチック成形品は、着色剤を加え
たプラスチックの部分と、感温変色性色素を加えたプラ
スチックの部分とを組み合わせてなる。
感温変色性色素は、温度の上昇、下降につれて可逆的に
発色−消色または変色するものを使用する。
本発明の成形品には、多くの態様が含まれる。
第一の態様は、第１図に示すように、着色剤を加えたプ
ラスチックの成形体１と感温変色性色素を加えたプラス
チックの成形体２とを、視覚的に後者が前者の前方に位
置するように、つまり感温変色性色素を加えたプラスチ
ックの成形体を通して着色剤を加えたプラスチックの成
形体が見えるように組み合わせてなる。
この態様においては、着色剤を加えたプラスチックの成
形体１の上に、絵柄の印刷を施してもよい。 また、こ
の態様は、第１図に示した板状のものに限らず、球、直
方体そのほか任意の立体形状のものに適用することがで
きる。
第二の態様は、着色剤を加えたプラスチックの成形体１
と、感温変色性色素を加えたプラスチックの成形体２と
を、視覚的に両者が並列に位置するように、つまり両者
が同時に見えるように組み合わせてなる。
上記第一および第二の態様において、感温変色性色素を
変色しない着色剤と併用することも可能である。 第２
図は、そのような態様を示す。
感温変色性色素を２種または３種以上併用してもよい。
異種の色素は、色が異なるものであっても、変色温度
域が異なるものであってもよい。
第４図に示す態様は、着色剤を加えたプラスチックの成
形体の上に、３種類の感温変色性色素を加えたプラスチ
ックの成形体を組み合わせたものである。
着色剤を加えたプラスチックの成形体と感温変色性色素
を加えたプラスチックの成形体とを組み合わせる手段は
、別個に成形したものの接着、融着のほか、２段射出成
形、共押出しなどの一体成形法もある。 第３図に示し
た例は、共押出し成形により、２色になるストロ−であ
る。
組み合わせの手段は、上記した一体化成形に限らず、一
方の他方への封入などによってもよい。
たとえば、感温変色性色素を加えたプラスチックの中空
球の中に、１個または複数個の着色剤を加えたプラスチ
ックのボールなどを入れた玩具が考えられる。The thermochromic plastic molded article of the present invention is formed by combining a plastic part to which a coloring agent has been added and a plastic part to which a thermochromic dye has been added. The thermochromic dye used is one that reversibly develops and discolors or changes color as the temperature rises or falls. The molded article of the present invention includes many embodiments. In the first embodiment, as shown in FIG. 1, a plastic molded body 1 containing a coloring agent and a plastic molded body 2 containing a thermochromic dye are visually placed in front of the former. In other words, the molded plastics to which the colorant has been added can be seen through the molded plastics to which the thermochromic dye has been added. In this embodiment, a pattern may be printed on the plastic molded body 1 to which a coloring agent has been added. Further, this embodiment is not limited to the plate-like shape shown in FIG. 1, but can be applied to a sphere, a rectangular parallelepiped, and any other three-dimensional shape. The second embodiment is a plastic molded article 1 to which a coloring agent has been added.
and a plastic molded body 2 to which a thermochromic dye has been added are combined so that both are visually located in parallel, that is, both can be seen at the same time. In the first and second embodiments above, it is also possible to use a thermochromic dye in combination with a colorant that does not change color. Second
The figure shows such an embodiment. Two or more thermochromic dyes may be used in combination. Different types of pigments may have different colors or different color change temperature ranges. The embodiment shown in FIG. 4 is a combination of a plastic molded body to which three types of thermochromic dyes have been added on a plastic molded body to which a coloring agent has been added. Methods for combining a plastic molded body containing a coloring agent and a plastic molded body containing a thermochromic dye include adhesion or fusing of the molded parts separately, as well as integrated methods such as two-stage injection molding and coextrusion. There is also a molding method. The example shown in FIG. 3 is a straw made of two colors by coextrusion molding. The means of combination is not limited to the above-mentioned integral molding, but may also be encapsulation of one into the other. For example, a toy can be considered in which a plastic ball containing one or more coloring agents is placed inside a hollow plastic sphere containing a thermochromic dye.
種々の感温変色性色素がもつ色調と異なる変色温度を利
用し、これを変色しない着色剤と組み合わせて使用する
ことにより、バラエティに富んだ色の変化を生じる感温
変色プラスチック成形品が得られる。
［実施例１］
ポリプロピレン「ショウアロマ−ＭＧ−５１’ｌｊ（昭
和電工〉に黄色のマスターバッチ（ポリコール工業）を
５％混合して射出成形し、幅１００＃Ｘ長さ１５０ｍＸ
厚さ２ＩＩＩＩｎの黄色のプラスチック板１を成形した
。
上記と同じポリプロピレンに、変色点が３２℃の感温変
色性色素「クロミックピンク」 （松井色素化学）のマ
スターバッチを５％混合し、上記の黄色のプラスチック
板１上に射出成形して、厚さ１＃のピンクのプラスチッ
ク板２を一体化した成形品を得た。
得られた成形品は第１図Ａに示す構造であって、感温変
色性色素を含むプラスチックの側から見ると、常温では
ピンク２ａであるが、これを温度５０’Ｃの湯に浸すと
、第１図Ｂに示すようにピンク２ａが消色してポリプロ
ピレン樹脂本来の色２ｂとなり、第１層の黄色が見えた
。 常温に戻すと、もとどおりの色になった。
［実施例２］
ポリエチレン［ツバチックＦ’−１６１Ｊ （三菱化
成〉に変色点か３５°Ｃの感温変色性色素「クロミック
赤」のマスターバッチ５％と黄色のマスターバッチ５％
とを混合した材料を用い、厚さ１Ｍ×直径６０ｍの円板
を射出成形した。 その周辺に、ポリエチレンにオレン
ジのマスターバッチ（ポリコール工業）５％を混合した
材料を射出成形して、厚さ１姻Ｘ幅１００＃Ｘ長さ１５
０ｍＩｎの成形品を得た。 この成形品は、常温では全
面オレンジにみえたが、温度５０’Ｃの湯に浸すと、第
２図ＡおよびＢに示すように、円板２の部分はオレンジ
２ａの中のクロミック赤の潤色により黄色２ｂとなり、
周辺部はオレンジのままであった。
常温に戻すと、もとの色に戻った。By utilizing the color tones and different color change temperatures of various thermochromic dyes, and using these in combination with colorants that do not change color, it is possible to obtain thermochromic plastic molded products that exhibit a wide variety of color changes. . [Example 1] Polypropylene "Show Aroma-MG-51'lj (Showa Denko) mixed with 5% yellow masterbatch (Polycol Industries) was injection molded, width 100 # length 150 m
A yellow plastic plate 1 with a thickness of 2IIIn was molded. The same polypropylene as above was mixed with 5% masterbatch of thermochromic dye "Chromic Pink" (Matsui Shiki Kagaku) with a color change point of 32°C, and the mixture was injection molded onto the yellow plastic plate 1 mentioned above to form a thick A molded product was obtained in which pink plastic plate 2 of #1 was integrated. The obtained molded product has the structure shown in Figure 1A, and when viewed from the side of the plastic containing the thermochromic dye, it is pink 2a at room temperature, but when it is immersed in hot water at a temperature of 50'C, it changes color. As shown in FIG. 1B, the pink 2a disappeared to become the original color 2b of the polypropylene resin, and the yellow color of the first layer was visible. When returned to room temperature, the color returned to its original color. [Example 2] Polyethylene [Tubatic F'-161J (Mitsubishi Kasei)] 5% masterbatch of thermosensitive color-changing dye "Chromic Red" with a color change point of 35°C and 5% yellow masterbatch
A disk with a thickness of 1M and a diameter of 60m was injection molded using the mixed material. Around it, a material made by mixing polyethylene with 5% orange masterbatch (Polycol Industries) is injection molded to a thickness of 1 mm x width of 100 mm x length of 15 mm.
A molded article of 0 ml was obtained. This molded product appeared entirely orange at room temperature, but when immersed in hot water at a temperature of 50'C, as shown in Figure 2 A and B, the part of disk 2 was colored orange 2a with a chromic red color. becomes yellow 2b,
The surrounding area remained orange. When returned to room temperature, the original color returned.
【実施例３】
実施例１で用いたポリプロピレンに赤色のマスターバッ
チ（ポリコール工業）５％を混合したものを射出成形し
て、直径２０ｍの赤色のボールを成形した。
同じポリプロピレンに変色点が３５°Ｃの感温変色性色
素「クロミック青」のマスターバッチ５％を混合し、上
記のボールの外側に厚さ１＃どなるように射出成形した
。
得られたボールは、常温では青色であったが、温度５０
’Ｃの湯に浸すと外側が透明になったため、赤色のボー
ルとなった。 感温変色性色素として変色点が５°Ｃの
「クロミック青」を使用して得た同様のボールは、常温
では赤色であり、温度５°Ｃに冷やすと青色になる。Example 3 A mixture of the polypropylene used in Example 1 and 5% of a red masterbatch (Polycol Industries) was injection molded to form a red ball with a diameter of 20 m. The same polypropylene was mixed with 5% masterbatch of a thermochromic dye "Chromic Blue" with a color change point of 35°C, and injection molded onto the outside of the above ball to a thickness of 1#. The obtained ball was blue at room temperature, but at a temperature of 50
When soaked in hot water 'C, the outside became transparent, giving it a red color. A similar ball obtained using "chromic blue" with a color change point of 5°C as a thermochromic dye is red at room temperature and turns blue when cooled to a temperature of 5°C.
【実施例４】
ポリプロピレンｒ８１００ＢＪ （三菱化成）に白色
のマスターバッチ（ポリコール工業）５％を混合したも
のと、ざらに変色点７°Ｃの感温変色性色素「クロミッ
クピンク」のマスターバッチ５％を混合したものとを共
押出し成形して、第３図に示すようなストロ−を形成し
た。
このストロ−は、常温では全体が白色ではあったが、氷
水に入れて吸うと、第３図Ｂに示すようにピンク色の縦
線が見えた。[Example 4] Polypropylene R8100BJ (Mitsubishi Kasei) mixed with 5% of a white masterbatch (Polycol Industries) and a masterbatch of 5% of a thermosensitive color-changing dye "Chromic Pink" with a color change point of 7°C. The mixture was coextruded to form a straw as shown in FIG. This straw was entirely white at room temperature, but when it was placed in ice water and sucked, pink vertical lines were visible as shown in Figure 3B.
【実施例５】
ポリエチレンの削出成形により、赤色のボールを６個成
形した。
ポリエチレンｒＦ１００ｊ （三菱化成）に変色点３
２°Ｃの感温変色性色素「クロミック黄」のマスターバ
ッチ５％を混合し、中空成形により中空−〇 −
球を成形した。 その中に、上記の赤色のボールを６個
人れた。
この成形品は、常温では中空球が黄色であるため中は見
えなかったが、温度３５〜４０’Ｃの湯に浸すと中空球
が透明となり、中に入っている赤色のボールが見えた。Example 5 Six red balls were molded by cutting polyethylene. Polyethylene rF100j (Mitsubishi Kasei) has a discoloration point of 3.
A 5% masterbatch of thermochromic dye "Chromic Yellow" at 2°C was mixed, and a hollow -0- sphere was formed by blow molding. Among them, there were 6 red balls shown above. The inside of this molded product could not be seen because the hollow sphere was yellow at room temperature, but when immersed in hot water at a temperature of 35 to 40'C, the hollow sphere became transparent and the red ball inside was visible.
【実施例６】
実施例１で用いたポリプロピレンに赤色のマスターバッ
チを混合して削出成形し、赤色のプラスチック板を成形
した。
同じポリプロピレンに、変色点が一３〜６°Ｃの感温変
色性色素「クロミックピンク」、変色点が１６〜２６°
Ｃの「クロミック青」、および変色点３３〜４３°Ｃの
「クロミック黄」の各マスターバッチ５％ずつを混合し
、上記の赤色のプラスチック板１上に射出成形して、第
４図Ａに示すように、厚さ１ｍのプラスチック板２を一
体化した成形品を得た。
この成形品は、第二の層の側から見ると、温度が一３〜
６°Ｃでは第４図Ａに示すように黒色２ａであり、温度
７〜２６°Ｃでは第４図Ｂに示すようにグリーン２ｂで
あり、温度２７〜４３°Ｃでは第４図Ｃに示すように黄
色２Ｃであり、温度４４°Ｃ以上では第４図りに示すよ
うに第２層が消色して透明２ｄとなり、第１層の赤色が
見えた。 この変化は可逆的に起り、常温ではグリーン
２ｂであった。
発明の効果
本発明の感温変色プラスチック成形品は、着色剤を加え
たプラスチックと感温変色性色素を加えたプラスチック
との組み合わせからなるので、温度変化により単なる発
色または潤色がみられる従来品を超えて、２種またはそ
れ以上の色の組み合わせを楽しむことができる。 従っ
て、この成形品は、各種飲料容器や玩具などに最適であ
る。Example 6 The polypropylene used in Example 1 was mixed with a red masterbatch and cut and molded to form a red plastic plate. In the same polypropylene, there is a thermosensitive color-changing dye "Chromic Pink" with a color change point of 13 to 6 degrees Celsius, and a color change point of 16 to 26 degrees Celsius.
5% of each masterbatch of "Chromic Blue" of C and "Chromic Yellow" with a color change point of 33 to 43°C was mixed and injection molded onto the above red plastic plate 1 to form the mold shown in Fig. 4A. As shown, a molded product in which a plastic plate 2 with a thickness of 1 m was integrated was obtained. When viewed from the side of the second layer, this molded product has a temperature of 13 to
At 6°C, it is black 2a as shown in Figure 4A, at a temperature of 7 to 26°C it is green 2b as shown in Figure 4B, and at a temperature of 27 to 43°C it is green 2b as shown in Figure 4C. As shown in the figure, the color was yellow 2C, and at temperatures above 44°C, the second layer disappeared and became transparent 2D, as shown in the fourth diagram, and the red color of the first layer was visible. This change occurred reversibly and was green 2b at room temperature. Effects of the Invention The thermochromic plastic molded product of the present invention is made of a combination of a plastic with a coloring agent added and a plastic with a thermochromic pigment added, so it is different from conventional products that simply develop color or become embellished due to temperature changes. You can enjoy the combination of two or more colors. Therefore, this molded product is ideal for various beverage containers, toys, and the like.
第１図および第２図は、本発明の感温変色プラスチック
成形品の色の変化を説明する模式的な断面図であって、
Ａはプラスチック成形品の常温の状態を、Ｂは感温変色
した状態をそれぞれ示す。゛第３図は、本発明の感温変
色プラスチック成形品の一例を示す斜視図であって、Ａ
は常温の状態を、Ｂは感温変色性した状態をそれぞれ示
す。
第４図は、本発明の感温変色プラスチック成形品の色の
変化を説明する、第１図および第２図と同様に模式的な
断面図であり、Ｂは常温の状態を、Ａ、ＣおよびＤは感
温変色した状態をそれぞれ示す。FIGS. 1 and 2 are schematic cross-sectional views illustrating the color change of the thermochromic plastic molded product of the present invention,
A shows the plastic molded product at room temperature, and B shows the thermosensitive discolored state. 3 is a perspective view showing an example of the temperature-sensitive color-changing plastic molded product of the present invention,
B indicates a state at room temperature, and B indicates a temperature-sensitive discoloration state. FIG. 4 is a schematic cross-sectional view similar to FIGS. 1 and 2 to explain the color change of the thermochromic plastic molded product of the present invention, and B shows the normal temperature state, A, C and D indicate a state of temperature-sensitive discoloration, respectively.
Claims (6)
性色素を加えたプラスチックの部分とを組み合わせてな
る感温変色プラスチック成形品。(1) A thermochromic plastic molded product made by combining a plastic part with a colorant added and a plastic part with a thermochromic dye added.
性色素を加えたプラスチックの成形体とを、視覚的に後
者が前者の前方に位置するように組み合わせた特許請求
の範囲第１項の感温変色プラスチック成形品。(2) Claim 1, which combines a plastic molded body to which a coloring agent has been added and a plastic molded body to which a thermochromic dye has been added, so that the latter is visually positioned in front of the former. Temperature-sensitive color-changing plastic molded products.
の印刷を施した特許請求の範囲第２項の感温変色プラス
チック成形品。(3) The temperature-sensitive color-changing plastic molded article according to claim 2, in which a pattern is printed on a plastic molded article to which a colorant has been added.
性色素を加えたプラスチックの成形体とを、視覚的に両
者が並列に位置するように組み合わせた特許請求の範囲
第１項の感温変色プラスチック成形品。(4) The feature set forth in claim 1, which combines a plastic molded body to which a coloring agent has been added and a plastic molded body to which a thermochromic dye has been added so that both are visually located in parallel. Temperature-changing plastic molded product.
性色素を加えたプラスチックの部分を有する特許請求の
範囲第１項の感温変色プラスチック成形品。(5) The thermochromic plastic molded article according to claim 1, which has a plastic part to which thermochromic dyes having two or more different colors are added.
をもった感温変色性色素を加えたプラスチックの部分を
有する特許請求の範囲第１項の感温変色プラスチック成
形品。(6) The thermochromic plastic molded article according to claim 1, which has a plastic part to which thermochromic dyes having two or more different colors and color change temperature ranges are added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8739487A JPS63251431A (en) | 1987-04-09 | 1987-04-09 | Thermochromic plastic molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8739487A JPS63251431A (en) | 1987-04-09 | 1987-04-09 | Thermochromic plastic molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63251431A true JPS63251431A (en) | 1988-10-18 |
Family
ID=13913663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8739487A Pending JPS63251431A (en) | 1987-04-09 | 1987-04-09 | Thermochromic plastic molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63251431A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101159812B1 (en) | 2011-06-13 | 2012-06-26 | 이흥수 | Molding for furniture changing color according to room temperature variation and method manufacturing the same |
-
1987
- 1987-04-09 JP JP8739487A patent/JPS63251431A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101159812B1 (en) | 2011-06-13 | 2012-06-26 | 이흥수 | Molding for furniture changing color according to room temperature variation and method manufacturing the same |
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