JPH0332897A - Finish treatment of tail end of pencil shaft - Google Patents

Finish treatment of tail end of pencil shaft

Info

Publication number
JPH0332897A
JPH0332897A JP16808989A JP16808989A JPH0332897A JP H0332897 A JPH0332897 A JP H0332897A JP 16808989 A JP16808989 A JP 16808989A JP 16808989 A JP16808989 A JP 16808989A JP H0332897 A JPH0332897 A JP H0332897A
Authority
JP
Japan
Prior art keywords
printing
layer
ultraviolet
ultraviolet rays
ink
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.)
Granted
Application number
JP16808989A
Other languages
Japanese (ja)
Other versions
JPH0813597B2 (en
Inventor
Shunichi Yamaguchi
俊一 山口
Masashi Sato
正志 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Pencil Co Ltd
Original Assignee
Mitsubishi Pencil Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Pencil Co Ltd filed Critical Mitsubishi Pencil Co Ltd
Priority to JP1168089A priority Critical patent/JPH0813597B2/en
Publication of JPH0332897A publication Critical patent/JPH0332897A/en
Publication of JPH0813597B2 publication Critical patent/JPH0813597B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

PURPOSE:To achieve cost reduction and the lowering of percent defective by applying undercoat using an ultraviolet curable resin to cure the undercoat layer by the irradiation with ultraviolet rays and subsequently applying the topcoat of required paint and further applying printing thereon using ultraviolet curable printing ink to cure the printing layer by the irradiation with ultraviolet rays. CONSTITUTION:A UV resin is applied to the rear end surface of a pencil shaft 1 to form an undercoat layer which is, in turn, irradiated with ultraviolet rays for several sec by an ultraviolet irradiation apparatus to be cured and top coat is subsequently applied thereon using enamel and UV printing ink is further applied thereon by printing and irradiated with ultraviolet rays by the ultraviolet irradiation apparatus to be cured. As a result, since topcoat can be made unnecessary and the number of processes and the amount of the materials can be reduced, cost reduction can be achieved and the release problem based on the inferiority of the close adhesiveness of an oily ink printing layer and a topcoat layer is eliminated and quality is enhanced and percent deficient can be reduced.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、鉛筆軸尾端の仕上処理方法に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a method for finishing the tail end of a pencil shaft.

(従来の技術) 従来、鉛筆軸尾端の仕上処理方法として、第2図に示す
ように、1ず鉛筆軸(1)の後端面にUV樹脂を下塗り
して紫外線を照射することによシ硬化させ(図中(2)
が下塗UV樹脂塗膜層を示す)、次にその上をエナメル
等をもって上塗シしく図中(3)が上塗シ塗膜層を示す
)、その上に油性タイプの印刷インキをもって印刷を施
し図中(4)が油性インキ印刷層を示す)、さらにその
上にUV樹脂を再び塗布して30W/cmの出力による
紫外線を照射して硬化させることによシトツブコート層
(5)を形成するという方法があった。
(Prior Art) Conventionally, as shown in Fig. 2, the finishing method for the tail end of a pencil shaft (1) involves first coating the rear end surface of the pencil shaft (1) with UV resin and irradiating it with ultraviolet light. Harden ((2) in the figure)
(indicates the undercoat UV resin coating layer), then topcoat it with enamel, etc. (3) in the figure indicates the topcoat coating layer), and print on top of it with oil-based printing ink. The layer (4) in the middle shows the oil-based ink printing layer), and then the UV resin is coated again on top of it and cured by irradiation with ultraviolet rays with an output of 30 W/cm to form the sheet coating layer (5). was there.

しかしながら上記の従来方法は、塗布回数が多い゛の′
で塗膜の収縮応力の影響で筆記具軸のエツジ部分(木口
)が割れる虞があう、油性タイプの印刷インキの乾燥に
巨数がががる面倒があシ油性インキ印刷層とUV樹脂の
トップコート層との密着性が弱いので外圧で別離する虞
があって印刷面積が広い場合はUV樹脂に換えて溶剤型
アクリル樹脂を用いる必要がある等の問題があった。
However, the above conventional method requires a large number of applications.
There is a risk of the edge part (end) of the writing instrument shaft cracking due to the shrinkage stress of the coating film, and the oil-based printing ink has the trouble of peeling off when drying.The oil-based ink printing layer and the UV resin top. Since the adhesion with the coating layer is weak, there is a risk of separation due to external pressure, and when the printing area is large, there are problems such as the need to use a solvent-based acrylic resin instead of the UV resin.

(発明が解決しようとする課題) 本発明は上記従来例の工程を短縮してコストダウンをも
たらすと共に品質を向上して不良率の ダウンももたら
す鉛筆軸尾端の仕上処理方法の提供を目的とする。
(Problems to be Solved by the Invention) The purpose of the present invention is to provide a finishing method for the tail end of a pencil shaft, which shortens the process of the conventional example and reduces costs, improves quality, and reduces the defective rate. do.

(課題を解決するための手段) 上記目的を達成するために、本発明の鉛筆軸尾端の仕上
処理方法は、紫外線硬化箋樹゛脂゛をtつて筐ず下塗シ
して紫外線を照射することによりそのUV樹脂を硬化さ
せ、次に所要の塗料をもって上塗りし、その上に紫外線
硬化型印刷インキをもって印刷を施して紫外線を照射し
てそのUV印刷インキを硬化させることを特徴とするも
のである。
(Means for Solving the Problems) In order to achieve the above object, the finishing method for the tail end of a pencil shaft of the present invention includes applying an undercoat with an ultraviolet curing resin and irradiating it with ultraviolet rays. The method is characterized by curing the UV resin, then applying a topcoat with the required paint, printing on top of it with an ultraviolet curable printing ink, and curing the UV printing ink by irradiating it with ultraviolet rays. be.

(作 用) 上記従来の方法の場合、上塗シ塗膜に含1れる可塑剤が
、油性タイプの印刷インキに含筐れる溶剤と反応して表
面に析出するので、印刷膜の硬化性を阻害して耐摩耗性
を男化させる問題があシ、その問題を解決するために印
刷層の表面にトップコート層を形成することが不可欠で
あった。これに対し本発明の工程中に釦いて使用するU
V印刷インキは紫外線の照射によってラジカル重合反応
を起して数秒〜数分で反応を完結し強度な膜を形成する
ので耐摩耗性及び耐溶剤性にすぐれその表面にトップコ
ート層を形成する必要性を解消する。
(Function) In the case of the above conventional method, the plasticizer contained in the top coat reacts with the solvent contained in the oil-based printing ink and precipitates on the surface, which inhibits the hardenability of the printed film. In order to solve this problem, it was essential to form a top coat layer on the surface of the printing layer. In contrast, the U button used during the process of the present invention
V printing ink causes a radical polymerization reaction when irradiated with ultraviolet rays and completes the reaction in a few seconds to a few minutes, forming a strong film, so it has excellent abrasion resistance and solvent resistance, and it is necessary to form a top coat layer on the surface. Eliminate sexuality.

(実施例) 第1図を参照して実施例について説明する。(Example) An embodiment will be described with reference to FIG.

1ず鉛筆軸(1)の後端面にUV樹脂金下塗りして紫外
線照射装置によシ紫外線を数秒間照射して硬化させ(図
中(2)が下塗UV樹脂塗膜層を示す)次にその上をエ
ナメル等をもって上塗シしく図中(3)が上塗シ塗膜層
を示す)、さらにその上にUV印刷インキをもって印刷
を施して紫外線照射装置により80ル6の出力で紫外線
を数秒間照射して硬化させる(図中(6)がUVインキ
印刷層を示す)、以上によシ工程を終了する。尚、鉛筆
軸は箱に収納した状態で紫外線照射装置によって紫外線
を照射するが、その場合の1箱に収納する筆記具軸の本
数は20G〜25 () (2880本〜3600本)
可能である。
1. Apply a UV resin gold undercoat to the rear end surface of the pencil shaft (1) and cure it by irradiating it with ultraviolet rays for several seconds using an ultraviolet irradiation device ((2) in the figure indicates the undercoat UV resin coating layer). Then apply a top coat with enamel, etc. ((3) in the figure shows the top coat layer), then print on top of that with UV printing ink and irradiate it with ultraviolet rays for several seconds at an output of 80 l6 using an ultraviolet irradiation device. The UV ink printing layer is cured by irradiation ((6) in the figure indicates the UV ink printing layer), and the curing process is thus completed. In addition, pencil shafts are irradiated with ultraviolet rays by an ultraviolet irradiation device while stored in a box, but in this case, the number of writing instrument shafts stored in one box is 20G to 25 () (2880 to 3600).
It is possible.

(発明の効果) 本発明は叙上のと訟シであシ、従来行われていたパ油−
怪タイブの印刷インキによる印刷に替えてUV印刷イン
キを用いた印刷を施すことによって、従来行われていた
トップコートを不要とすることができ、これによって工
程及び材料が減少するのでコストダウンを達成できる効
果がある。筐た油性タイプの印刷インキを用いないので
その乾燥にかかる日数だけ期間を短縮できる効果がある
。筐た塗布回数の減少によって塗膜の収縮応力の影響も
減少して筆記具軸の工ツジ部分の割れが防止され、筐た
油性インキ印刷層とトップコート層の密着性の不良に基
づく剥離の問題も解消されて品質が向上し不良率がダウ
ンする効果もある。尚、実施例の如く紫外線照射装置の
出力を従来の30 W、/2mから80−6に上げるこ
とによって口V印刷インキを硬化させた場合にべたつき
が解消してゴミなどの付着による汚れを防止できる利点
がある。
(Effects of the Invention) The present invention does not require the above-mentioned litigation, and the present invention
By printing with UV printing ink instead of printing with Kai-type printing ink, it is possible to eliminate the need for the conventional top coat, which reduces the number of processes and materials, resulting in cost reduction. There is an effect that can be done. Since no oil-based printing ink is used, the drying time can be shortened by the number of days required for drying. By reducing the number of times the coating is applied, the effect of shrinkage stress on the coating film is also reduced, preventing cracking of the abutment part of the writing instrument barrel, and preventing peeling problems caused by poor adhesion between the oil-based ink printing layer and the top coat layer. This also has the effect of improving quality and reducing defective rates. In addition, as in the example, by increasing the output of the ultraviolet irradiation device from the conventional 30 W, /2 m to 80-6, when the V-printing ink is cured, stickiness is eliminated and stains due to adhesion of dust etc. are prevented. There are advantages that can be achieved.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明実施例による鉛筆軸尾端の断面図、第2
図は従来例による鉛筆軸尾端の断面図である。 (1)・・・鉛筆軸、(2)・・・下塗U’V樹脂塗膜
層、(3)・・・上塗ジ塗膜層、(4)・・・油性イン
キ印刷層、(5)・・・トップコート層、 (6)・・・UVインキ印刷層。 第 図 (1)・・・鉛筆軸 (2)・・・下塗り■樹脂塗膜層 (3)・・・上塗シ塗塗膜層 (6)・・・o’vインキ印刷層 第 図 (4)・・・油性インキ印刷層 (5)・・・ トップコート層
FIG. 1 is a sectional view of the tail end of a pencil shaft according to an embodiment of the present invention, and FIG.
The figure is a sectional view of the tail end of a pencil shaft according to a conventional example. (1)...Pencil barrel, (2)...Undercoat U'V resin coating layer, (3)...Top coating layer, (4)...Oil-based ink printing layer, (5)... ...Top coat layer, (6)...UV ink printing layer. Diagram (1)...Pencil barrel (2)...Undercoat ■Resin coating layer (3)...Top coating Coat coating layer (6)...O'V ink printing layer Diagram (4) )...Oil-based ink printing layer (5)...Top coat layer

Claims (1)

【特許請求の範囲】[Claims] 紫外線硬化型樹脂(以下「UV樹脂」という)をもつて
まず下塗りして紫外線を照射することによりそのUV樹
脂を硬化させ、次に所要の塗料をもつて上塗りし、その
上に紫外線硬化型印刷インキ(以下「UV印刷インキ」
という)をもつて印刷を施して紫外線を照射してそのU
V印刷インキを硬化させることをことを特徴とする鉛筆
軸尾端の仕上処理方法。
First coat with an ultraviolet curable resin (hereinafter referred to as "UV resin"), cure the UV resin by irradiating it with ultraviolet rays, then top coat with the required paint, and then apply ultraviolet curable printing on top. Ink (hereinafter referred to as "UV printing ink")
) and then irradiated with ultraviolet rays.
A method for finishing the tail end of a pencil shaft, which comprises curing V-printing ink.
JP1168089A 1989-06-29 1989-06-29 Pencil shaft tail end finishing method Expired - Lifetime JPH0813597B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1168089A JPH0813597B2 (en) 1989-06-29 1989-06-29 Pencil shaft tail end finishing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1168089A JPH0813597B2 (en) 1989-06-29 1989-06-29 Pencil shaft tail end finishing method

Publications (2)

Publication Number Publication Date
JPH0332897A true JPH0332897A (en) 1991-02-13
JPH0813597B2 JPH0813597B2 (en) 1996-02-14

Family

ID=15861642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1168089A Expired - Lifetime JPH0813597B2 (en) 1989-06-29 1989-06-29 Pencil shaft tail end finishing method

Country Status (1)

Country Link
JP (1) JPH0813597B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009274426A (en) * 2008-05-15 2009-11-26 Takashi Machida Pencil set

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57182497A (en) * 1981-05-07 1982-11-10 Mitsubishi Pencil Co Method of forming solid pattern to tail end of pencil
JPS5836193U (en) * 1981-09-02 1983-03-09 大日本印刷株式会社 pencil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57182497A (en) * 1981-05-07 1982-11-10 Mitsubishi Pencil Co Method of forming solid pattern to tail end of pencil
JPS5836193U (en) * 1981-09-02 1983-03-09 大日本印刷株式会社 pencil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009274426A (en) * 2008-05-15 2009-11-26 Takashi Machida Pencil set

Also Published As

Publication number Publication date
JPH0813597B2 (en) 1996-02-14

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