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JP3753799B2 - Method for producing stamped surface of thermoplastic resin - Google Patents
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JP3753799B2 - Method for producing stamped surface of thermoplastic resin - Google Patents

Method for producing stamped surface of thermoplastic resin Download PDF

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Publication number
JP3753799B2
JP3753799B2 JP19399596A JP19399596A JP3753799B2 JP 3753799 B2 JP3753799 B2 JP 3753799B2 JP 19399596 A JP19399596 A JP 19399596A JP 19399596 A JP19399596 A JP 19399596A JP 3753799 B2 JP3753799 B2 JP 3753799B2
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Prior art keywords
thermoplastic resin
negative
ink
heat
transparent film
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JP19399596A
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Japanese (ja)
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JPH1016370A (en
Inventor
崇成 中根
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Shachihata Inc
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Shachihata Inc
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Description

【0001】
【産業上の利用分野】
熱可塑性樹脂からなる連続多孔質体である印材を使用した印面製造方法に関するものである。
【0002】
【従来の技術】
従来より熱可塑性樹脂からなる印面製造方法が多く出願されている。
たとえば、特開昭50−155323号(以下、(イ)とする。)、特開昭60−193686号(以下、(ロ)とする。)がある。
(イ)は、熱可塑性樹脂多孔質体の溶融温度まで、凹凸金型を加熱して、金型の凸部にあたるところの多孔質部分を溶融して表面の多孔質部分を潰す。
そして、金型の凹部には、多孔質部分が接触していないので表面の多孔質部分が残り、これによりインキの滲み出し部分と非滲み出し部分が出来、印面となる。
(ロ)は、(イ)と同様、加熱した凹凸金型を連続気泡性スポンジに押圧して、多孔質を凸金型部分で溶融させて、凹金型部分に多孔質部が残り印面としている。
こうした、凹凸金型によるものは溶融部分か粗くなるとともに、細かい印影をえようとすれば潰れてしまい、細かい鮮明な印影(印面)を得ることができない。特に、材質が熱可塑性樹脂においては、多孔質の孔部分が樹脂の溶融により塞がり、同時に収縮するため得難いものとなる。
更にまた、特開平7−285258号(以下、(ハ)とする。)がある。
(ハ)の特に請求項6、請求項7にあるように、赤外線を照射することによって、印影原稿像を透して加熱板にあたり発熱して多孔質体表面を溶融して印面を求めている。
しかし、この方法であると、原稿を直接使用できる特徴はあるものの、原稿に難揮発性物質を浸透させていることと加熱板を必要としているため、製造工程が複雑である。また、原稿に難揮発性物質を浸透させ裏面を鏡像としているため細かい印面が得にくく鮮明さに欠ける。
【0003】
【発明が解決しようとする課題】
上記の問題に対し、容易に印面を製造出来、細かい鮮明な印影が得られる熱可塑性樹脂の印面製造方法を提供することにある。
【0004】
【課題を解決するための手段】
赤外線照射により発熱する発熱インキを用いて所望する像を白黒反転で描画したネガ原稿の発熱インキ側に、厚さ10〜50ミクロンの透明フィルムを当接させて赤外線照射し、ネガ原稿と透明フィルムを融着させ一体とし、次に透明フィルム側を連続多孔質を有する熱可塑性樹脂に当接させ、ネガ原稿側から再度赤外線を照射し発熱インキを発熱させて熱可塑性樹脂の表面を溶融し、インキの滲み出し部と非滲み出し部からなる印面を作成することを特徴とする熱可塑性樹脂の印面製造方法。
【0005】
【作用】
本発明のネガ原稿1は、透明ポリプロピレンフィルム上にカーボン等の発熱インキ6で白黒反転の像が設けられている。
こうした、ネガ原稿1はコピー機械等で製造可能である。
前記インキは、赤外線の波長が0.76μm〜1μmであるので、赤外線を吸収し発熱効果を生じるものである。たとえば、カーボンは波長が0.4μm〜1μmで発熱する。またフタロシアン系、多環キノン系、ペリノン系、ペリレン系、ジスアゾ系等波長が0.76μm〜1μmで赤外線を吸収するインキであればよい。
そして、ネガ原稿1の前記発熱インキ6側に 5ミクロン〜50ミクロンの透明フィルム2を介在させる。次に、透明フィルム2側から赤外線を照射する。すると、赤外線はネガ原稿1上の発熱インキ6に吸収されて発熱し、透明フィルム2を溶かしネガ原稿1に融着し一体となる。
次に、熱可塑性樹脂3からなる連続多孔質体の印材を一体化したネガ原稿1の発熱インキ6側に当接させ、ネガ原稿1側の上方より赤外線を照射する。
すると、発熱インキ6の下面に位置している熱可塑性樹脂3の部分は、熱により溶融し多孔質の表面を潰し非滲み出し部5と前記発熱インキ6以外は溶融せず連続多孔質をそのまま残り滲み出し部4として印面を作成することができる。
また、あらかじめ、透明フィルム2をネガ原稿1と熱可塑性樹脂3の間に介在させ外圧により密着させ一体としネガ原稿側から赤外線を照射することによっても同様な効果を得ることが出来る。
【0006】
【実施例】
本発明の実施例を図1、図2、図3により詳細に説明する。
1は、ネガ原稿であり、基材が透明のポリプロピレンフィルムで厚さは100ミクロン〜200ミクロンであり、印面にしたときインキを滲みだす部分(滲み出し部4)を白抜き(透明のまま)とインキを滲みださない部分(非滲み出し部5)を基材の上に発熱インキ6を用いて設け前記ネガ原稿1を形成している。
発熱インキ6は、赤外線で発熱することから波長0.76μm〜1μmを吸収する発熱インキ6であればよく、たとえば、カーボン、フタロシアン系、多環キノン系、ペリノン系、ペリレン系、ジスアゾ系等であればよい。
また、ネガ原稿1の作成方法は、2枚の透明ポリプロピレンフィルムの間に感光性樹脂層と発熱インキ層をラミネートした厚さ20ミクロン〜200ミクロンのフィルムに原稿10を積載し、紫外線で露光する。すると、感光性樹脂11は未露光部分では樹脂のべたつきがあり、紫外線により露光した部分はべたつきがなくなる。こうして、感光性樹脂層は、原稿10にならって粘着部分とそうでない部分が生じる。
【0007】
その後前記の2枚の透明のポリプロピレン製フィルム12を剥がし露光せずに粘着性が残っている部分にはが発熱インキ6の層が剥がれ、感光性樹脂層と共に一方のポリプロピレンフィルム側に転写し、露光して樹脂の粘着性が無くなった部分は発熱インキ6はそのままもう一方に残る。その結果、ネガフィルムとポジフィルムが現われる。前記のネガフィルムをネガ原稿1とする。
2は、ポリ塩化ビニ−ル、またはポリエチレン、ポリプロピレンの透明フィルムであり、厚さが5ミクロン〜50ミクロンであり、最も適切なのが20ミクロン〜50ミクロンである。次に、透明フィルム2をネガ原稿1の発熱インキ6を設けた側に当接させ赤外線を照射すると発熱インキ6の発熱とともに透明フィルム2がネガ原稿1に融着してネガ原稿1と一体化する。
【0008】
この一体化したネガ原稿1の透明フィルム2側に熱可塑性樹脂3を当接してネガ原稿1側から赤外線を照射すると発熱インキ6が発熱して熱可塑性樹脂3の表面を溶融して連続多孔質の孔を塞ぎ非滲み出し部5を設け、その他の部分をインキの滲み出し部4として設けて印面としている。最後に、ネガ原稿1と熱可塑性樹脂3を剥がし分離する。この時、ネガ原稿1が透明フィルム2と一体化しているため熱可塑性樹脂3に発熱インキ6が付着することなく綺麗に剥がすことができ、鮮明で細かい印面を作ることができる。更に、前記一体化したネガ原稿1を使用することで何度も同じ印面を作ることができる。この時、ネガ原稿1のみであるので容易に印面作成するためのセットが可能である。
特に、透明フィルム2を使用することで、ネガ原稿1の発熱インキ6と熱可塑性樹脂3を綺麗に分離し、更に熱伝導を損なわずに印面作成を繰り返し行なうことが出来る。
以下がその実施例と比較例の結果である。
実施例1は、ポリプロピレンフィルム15ミクロン。
実施例2は、塩化ビニリデンフィルム15ミクロン。
実施例3は、ポリプロピレンフィルム45ミクロン。
実施例4は、塩化ビニリデンフィルム45ミクロン
比較例1は、ポリプロピレンフィルム100ミクロン。
比較例2は、透明フィルム2は無し。
【0009】
【表1】

Figure 0003753799
【0010】
3は、連続多孔質を有する熱可塑性樹脂であり、本実施例ではエチレン−オレフィン共重合体を主材としたポリオレフィン系樹脂である。
本実施例の熱可塑性樹脂3は、商品名:タフマーA4090(三井石油化学)を使用する。
溶融温度は、50度〜70度である。
【0011】
印面製造工程は、ネガ原稿1の発熱インキ6の上に透明ポリプロピレン製の透明フィルム2を積層し、その上に熱可塑性樹脂3を更に積層する。
そして、ネガ原稿1側より赤外線を照射する。
すると、ネガ原稿1の上に設けられた発熱インキ6が赤外線を吸収し、発熱し透明フィルム2を熱伝達し熱可塑性樹脂の部分を溶融し、表面の多孔質部分を塞ぐ。また、白抜きされた部分は、発熱せず表面の多孔質を溶融しない。
こうして、発熱インキが塗布された部分は、インキを滲みださない部分(非滲み出し部5)と、白抜きされた部分はインキを滲みだす部分(滲み出し部4)からなる印面を製造する。
【0012】
【効果】
以上の様な構成であるので、容易に印面を製造出来、細かい鮮明な印影が得られる熱可塑性樹脂3の印面製造方法である。
特に、ネガ原稿1と透明フィルム2を融着したことでネガ原稿1と熱可塑性樹脂3を印面作成過程においてセットする際、容易にセットすることができる。
【0013】
【図面の簡単な説明】
【図1】 本発明の実施例の斜視図
【図2】 本発明の実施例の断面図
【図3】 本発明の実施例のネガ原稿とフィルムの圧着状態図
【図4】 本発明の実施例のネガ原稿作成斜視図
【図5】 本発明の実施例のネガ原稿作成断面図
【0014】
【符号の説明】
1 ネガ原稿
2 透明フィルム
3 熱可塑性樹脂
4 滲み出し部
5 非滲み出し部
6 発熱インキ
10 原稿
11 感光性樹脂
12 フィルム[0001]
[Industrial application fields]
The present invention relates to a printing surface manufacturing method using a printing material that is a continuous porous body made of a thermoplastic resin.
[0002]
[Prior art]
Conventionally, many applications for manufacturing a stamp surface made of a thermoplastic resin have been filed.
For example, there are JP-A-50-155323 (hereinafter referred to as (A)) and JP-A-60-193686 (hereinafter referred to as (B)).
(A) heats the concave / convex mold to the melting temperature of the thermoplastic resin porous body, melts the porous part corresponding to the convex part of the mold, and crushes the porous part on the surface.
Then, since the porous portion is not in contact with the concave portion of the mold, the porous portion on the surface remains, whereby an ink exuded portion and a non-exuded portion are formed, and a stamp surface is formed.
(B) As in (a), the heated concavo-convex mold is pressed against the open-cell sponge to melt the porous at the convex mold part, and the porous part remains as the stamp surface on the concave mold part. Yes.
Such a concavo-convex mold is roughened at the melted portion and crushed when trying to obtain a fine imprint, and a fine and clear imprint (printed surface) cannot be obtained. In particular, when the material is a thermoplastic resin, the porous pores are blocked by melting of the resin and shrink at the same time, which is difficult to obtain.
Furthermore, there is JP-A-7-285258 (hereinafter referred to as (C)).
As in (6) and (7), in particular, by irradiating infrared rays, the stamped original image is transmitted through the heated original plate to generate heat and melt the porous body surface to obtain the printing surface. .
However, this method has a feature that the original can be used directly, but the manufacturing process is complicated because the original is infiltrated with a hardly volatile substance and requires a heating plate. Further, since a hardly volatile substance is infiltrated into the original and the back surface is made into a mirror image, it is difficult to obtain a fine stamped surface and lacks clarity.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a method for producing a stamped surface of a thermoplastic resin that can easily produce a stamped surface and obtain a fine and clear image.
[0004]
[Means for Solving the Problems]
A negative original and a transparent film are irradiated with a 10 to 50 micron thick transparent film in contact with the heat-generating ink side of a negative original in which a desired image is drawn with black and white reversal using heat-generating ink that generates heat by infrared irradiation. The transparent film side is then brought into contact with a thermoplastic resin having a continuous porous material, and the surface of the thermoplastic resin is melted by radiating infrared rays again from the negative original side to generate heat generation ink, A method for producing a stamped surface of a thermoplastic resin, wherein a stamped surface comprising an ink bleeding portion and a non-bleeding portion is created.
[0005]
[Action]
The negative document 1 of the present invention is provided with a black and white reversal image with heat-generating ink 6 such as carbon on a transparent polypropylene film.
Such a negative document 1 can be manufactured by a copy machine or the like.
Since the ink has an infrared wavelength of 0.76 μm to 1 μm, it absorbs infrared rays and produces a heat generation effect. For example, carbon generates heat at a wavelength of 0.4 μm to 1 μm. Further, any ink that absorbs infrared rays with a wavelength of 0.76 μm to 1 μm, such as phthalocyanine, polycyclic quinone, perinone, perylene, and disazo may be used.
Then, a transparent film 2 of 5 microns to 50 microns is interposed on the side of the heat generating ink 6 of the negative document 1. Next, infrared rays are irradiated from the transparent film 2 side. Then, the infrared rays are absorbed by the heat-generating ink 6 on the negative original 1 to generate heat, and the transparent film 2 is melted and fused to the negative original 1 to be integrated.
Next, the continuous porous printing material made of the thermoplastic resin 3 is brought into contact with the heat generating ink 6 side of the negative document 1 integrated, and infrared rays are irradiated from above the negative document 1 side.
Then, the portion of the thermoplastic resin 3 located on the lower surface of the heat generating ink 6 is melted by heat to crush the porous surface, and other than the non-bleeding portion 5 and the heat generating ink 6 are not melted and the continuous porous material is left as it is. A stamp face can be created as the remaining exuding portion 4.
Further, the same effect can be obtained by interposing the transparent film 2 between the negative document 1 and the thermoplastic resin 3 in advance and making them in close contact with each other by irradiating infrared rays from the negative document side.
[0006]
【Example】
An embodiment of the present invention will be described in detail with reference to FIGS.
1 is a negative manuscript, the base material is a transparent polypropylene film with a thickness of 100 to 200 microns, and the portion that exudes ink when it is printed (bleeding portion 4) is white (still transparent) The negative original 1 is formed by providing a portion (non-bleeding portion 5) where ink does not bleed on the base material using heat-generating ink 6.
The exothermic ink 6 may be any exothermic ink 6 that absorbs a wavelength of 0.76 μm to 1 μm because it generates heat by infrared rays. If it is.
The negative manuscript 1 is prepared by placing the manuscript 10 on a film having a thickness of 20 microns to 200 microns and laminating a photosensitive resin layer and a heat generating ink layer between two transparent polypropylene films and exposing them with ultraviolet rays. . Then, the photosensitive resin 11 has a stickiness of the resin in the unexposed portion, and the stickiness of the portion exposed by the ultraviolet rays disappears. Thus, the photosensitive resin layer has an adhesive portion and a non-adhesive portion following the original 10.
[0007]
Thereafter, the two transparent polypropylene films 12 are peeled off, and the layer of exothermic ink 6 is peeled off on the portion where the adhesive remains without being exposed, and transferred to one polypropylene film side together with the photosensitive resin layer, In the portion where the resin has lost its adhesiveness after exposure, the heat-generating ink 6 remains on the other side. As a result, negative film and positive film appear. The negative film is referred to as a negative document 1.
2 is a transparent film of polyvinyl chloride, polyethylene, or polypropylene, and has a thickness of 5 to 50 microns, and most suitable is 20 to 50 microns. Next, when the transparent film 2 is brought into contact with the side of the negative original 1 on which the heat generating ink 6 is provided and infrared rays are irradiated, the transparent film 2 is fused to the negative original 1 together with the heat generation of the heat generating ink 6 and integrated with the negative original 1. To do.
[0008]
When the thermoplastic resin 3 is brought into contact with the transparent film 2 side of the integrated negative original 1 and infrared rays are irradiated from the negative original 1 side, the heat-generating ink 6 generates heat and melts the surface of the thermoplastic resin 3 to form a continuous porous material. The non-bleeding part 5 is provided, and the other part is provided as the ink oozing part 4 as a marking surface. Finally, the negative document 1 and the thermoplastic resin 3 are peeled off and separated. At this time, since the negative original 1 is integrated with the transparent film 2, the exothermic ink 6 can be removed cleanly without adhering to the thermoplastic resin 3, and a clear and fine marking surface can be made. Further, by using the integrated negative document 1, the same stamp surface can be made many times. At this time, since only the negative manuscript 1 is provided, it is possible to easily set a stamp face.
In particular, by using the transparent film 2, the exothermic ink 6 and the thermoplastic resin 3 of the negative document 1 can be separated cleanly, and the printing surface can be repeatedly created without impairing heat conduction.
The following are the results of the examples and comparative examples.
Example 1 is a 15 micron polypropylene film.
Example 2 is a 15 micron vinylidene chloride film.
Example 3 is a polypropylene film 45 microns.
Example 4 is a vinylidene chloride film 45 microns, Comparative Example 1 is a polypropylene film 100 microns.
In Comparative Example 2, the transparent film 2 is not provided.
[0009]
[Table 1]
Figure 0003753799
[0010]
Reference numeral 3 denotes a thermoplastic resin having a continuous porosity, which is a polyolefin resin having an ethylene-olefin copolymer as a main material in this embodiment.
As the thermoplastic resin 3 of the present example, trade name: TAFMER A4090 (Mitsui Petrochemical) is used.
The melting temperature is 50 degrees to 70 degrees.
[0011]
In the stamp face manufacturing process, a transparent polypropylene transparent film 2 is laminated on the exothermic ink 6 of the negative original 1, and a thermoplastic resin 3 is further laminated thereon.
Then, infrared rays are emitted from the negative document 1 side.
Then, the heat-generating ink 6 provided on the negative original 1 absorbs infrared rays, generates heat, transfers heat to the transparent film 2, melts the thermoplastic resin portion, and closes the porous portion on the surface. Further, the whitened portion does not generate heat and does not melt the porous surface.
In this way, a printing surface is produced which includes a portion where exothermic ink is applied, a portion where ink does not bleed (non-bleeding portion 5), and a white portion where ink is oozed (bleeding portion 4). .
[0012]
【effect】
Since it is the above structure, it is a manufacturing method of the stamping surface of the thermoplastic resin 3 which can manufacture a stamping surface easily and can obtain a fine and clear imprint.
In particular, since the negative original 1 and the transparent film 2 are fused, the negative original 1 and the thermoplastic resin 3 can be easily set in the printing face preparation process.
[0013]
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of the present invention. FIG. 2 is a cross-sectional view of an embodiment of the present invention. FIG. Example of a negative manuscript preparation perspective view [FIG. 5] Cross section of a negative manuscript preparation example of the present invention [0014]
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Negative original document 2 Transparent film 3 Thermoplastic resin 4 Bleeding part 5 Non-bleeding part 6 Heat generating ink 10 Original 11 Photosensitive resin 12 Film

Claims (1)

赤外線照射により発熱する発熱インキ(6)を用いて所望する像を白黒反転で描画したネガ原稿(1)の発熱インキ(6)側に、厚さ15〜50ミクロンの透明フィルム(2)を当接させて赤外線照射し、ネガ原稿(1)と透明フィルム(2)を融着させ一体とし、次に透明フィルム(2)側を連続多孔質を有する熱可塑性樹脂(3)に当接させ、ネガ原稿(1)側から再度赤外線を照射し発熱インキ(6)を発熱させて熱可塑性樹脂(3)の表面を溶融し、インキの滲み出し部(4)と非滲み出し部(5)からなる印面を作成することを特徴とする熱可塑性樹脂の印面製造方法。A transparent film (2) with a thickness of 15 to 50 microns is applied to the heat generating ink (6) side of the negative manuscript (1) on which a desired image is drawn by black and white reversal using heat generating ink (6) that generates heat by infrared irradiation. In contact with infrared irradiation, the negative manuscript (1) and the transparent film (2) are fused and integrated, and then the transparent film (2) side is brought into contact with the thermoplastic resin (3) having continuous porosity, Irradiate infrared rays again from the negative document (1) side to heat the heat-generating ink (6) and melt the surface of the thermoplastic resin (3), from the ink exudation part (4) and non-exudation part (5) A method for producing a stamped surface of a thermoplastic resin, comprising:
JP19399596A 1996-07-03 1996-07-03 Method for producing stamped surface of thermoplastic resin Expired - Lifetime JP3753799B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19399596A JP3753799B2 (en) 1996-07-03 1996-07-03 Method for producing stamped surface of thermoplastic resin

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Application Number Priority Date Filing Date Title
JP19399596A JP3753799B2 (en) 1996-07-03 1996-07-03 Method for producing stamped surface of thermoplastic resin

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JPH1016370A JPH1016370A (en) 1998-01-20
JP3753799B2 true JP3753799B2 (en) 2006-03-08

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Publication number Priority date Publication date Assignee Title
JP4723716B2 (en) * 2000-10-24 2011-07-13 シヤチハタ株式会社 Method for producing porous stamp
CN116160790A (en) * 2021-12-15 2023-05-26 惠州万玺科技有限公司 A Preparation Method for Osmotic Stamps Capable of Obtaining High-Resolution Imprints

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JPH1016370A (en) 1998-01-20

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