JPH0277696A - X-ray protection case - Google Patents
X-ray protection caseInfo
- Publication number
- JPH0277696A JPH0277696A JP22936788A JP22936788A JPH0277696A JP H0277696 A JPH0277696 A JP H0277696A JP 22936788 A JP22936788 A JP 22936788A JP 22936788 A JP22936788 A JP 22936788A JP H0277696 A JPH0277696 A JP H0277696A
- Authority
- JP
- Japan
- Prior art keywords
- composition
- lead oxide
- case
- rubber
- ray
- 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
- 229910000464 lead oxide Inorganic materials 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 20
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000004743 Polypropylene Substances 0.000 claims abstract description 11
- -1 polypropylene Polymers 0.000 claims abstract description 11
- 229920001155 polypropylene Polymers 0.000 claims abstract description 11
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920001971 elastomer Polymers 0.000 claims abstract description 9
- 239000005060 rubber Substances 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 11
- 238000002156 mixing Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 5
- 229920000459 Nitrile rubber Polymers 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000005062 Polybutadiene Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920003049 isoprene rubber Polymers 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、高感度写真フィルム等をＸ線から防御するた
めに使用するＸ線防御用ケースに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an X-ray protective case used to protect high-sensitivity photographic film and the like from X-rays.
高感度写真フィルム等を収納し、Ｘ線から防御するため
のケースとして、従来合成樹脂に硫酸バリウムを配合し
たり、或いはこれに酸化鉛を配合した組成物から製造し
たものが知られている。Cases for storing high-sensitivity photographic films and the like and protecting them from X-rays are known to be manufactured from compositions in which barium sulfate is blended with synthetic resin, or lead oxide is blended therein.
しかし、合成樹脂に硫酸バリウムを配合した組成物から
得られるＸ線防御用ケースは、Ｘ線の遮蔽効果が十分で
ない。However, an X-ray protective case obtained from a composition containing barium sulfate in a synthetic resin does not have a sufficient X-ray shielding effect.
一方、酸化鉛はＸ線遮蔽効果に優れているものであるが
１合成樹脂に配合する場合にその配合量に限度があり、
このためそのＸ線遮蔽効果を１分に発揮し得ない問題が
ある。即ち、酸化鉛を多量に配合すると折り曲げ疲労性
が大きくなり、特にケース本体と蓋体とをヒンジ部を介
して一体に成形し、該蓋体を該ヒンジ部において開閉可
能に構成したケースを製作した場合、蓋体を何回か開閉
するうちにヒンジ部が白化し、蓋体が破断してしまう問
題がある。また、組成物の成形性が悪くなり、製造上に
問題が生じる上、得られるケースの表面状態も劣り、例
えば平滑性にかけ、ボイド。On the other hand, although lead oxide has an excellent X-ray shielding effect, there is a limit to the amount of lead oxide that can be added to a synthetic resin.
For this reason, there is a problem that the X-ray shielding effect cannot be exhibited within one minute. In other words, if a large amount of lead oxide is added, the bending fatigue resistance increases.In particular, a case is manufactured in which the case body and the lid are integrally molded via a hinge, and the lid can be opened and closed at the hinge. In this case, there is a problem in that the hinge part turns white after the lid is opened and closed several times, and the lid breaks. In addition, the moldability of the composition deteriorates, causing problems in production, and the surface condition of the resulting case is also poor, such as poor smoothness and voids.
ジャンカ、ムラ等が生じ易い。Janka, unevenness, etc. are likely to occur.
本発明は上記事情に鑑みなされたもので、Ｘ線遮蔽効果
に優れ、しかも折り曲げに対する耐疲労性が高く、成形
表面の良好なＸ線防御用ケースを提供することを目的と
する。The present invention was made in view of the above circumstances, and it is an object of the present invention to provide an X-ray protective case that has an excellent X-ray shielding effect, high fatigue resistance against bending, and a good molded surface.
〔課題を解決するための手段及び作用〕本発明は、上記
目的を達成するため、Ｘ線防御用ケースをポリプロピレ
ン樹脂に酸化鉛とゴムとを配合した組成物により形成す
るようにしたものである。[Means and Effects for Solving the Problems] In order to achieve the above objects, the present invention provides an X-ray protective case made of a composition of polypropylene resin mixed with lead oxide and rubber. .
本発明によれば、このようにポリプロピレン樹脂に酸化
鉛を配合した組成物に更にゴムを配合したことにより、
酸化鉛を多量に、特に組成物全体の２０〜５０％（重量
％、以下同じ）配合し得、このため酸化鉛の多量配合で
Ｘ線を効果的に遮蔽することができると共に、酸化鉛を
このように多量に配合しても折り曲げに対する疲労性や
成形品の成形性、外観に悪影響が生ぜず、例えばケース
本体に蓋体をヒンジ部を介して開閉可能に一体に連設し
たケースを製作した場合、蓋体を多数回開閉操作しても
ヒンジ部に白化が生じが難いものであり、また成形品表
面の平滑性が高く、成形時にボイド、ジャンカ、ムラ等
の欠陥が生じ難いものである。According to the present invention, by further blending rubber into the composition in which lead oxide is blended with polypropylene resin,
A large amount of lead oxide can be blended, particularly 20 to 50% (wt%, the same hereinafter) of the entire composition, so that X-rays can be effectively shielded by blending a large amount of lead oxide, and lead oxide can be effectively shielded from X-rays. Even when such a large amount is added, there is no adverse effect on the fatigue resistance against bending, the formability of the molded product, or the appearance.For example, a case can be manufactured in which the lid body is connected to the case body so that it can be opened and closed via a hinge part. In this case, the hinge part is unlikely to whiten even if the lid is opened and closed many times, and the surface of the molded product is highly smooth and defects such as voids, junks, and unevenness are unlikely to occur during molding. be.
以下、本発明について更に詳しく説明する。The present invention will be explained in more detail below.
本発明のＸ線防御用ケースは、上述したようにポリプロ
ピレン樹脂に酸化鉛とゴムとを配合した組成物により形
成してなるものであるが、この組成物を構成するポリプ
ロピレン樹脂、酸化鉛としては１通常の市販品を使用で
きる。また、ゴムとしては、天然ゴム、スチレン・ブタ
ジェンゴム（ＳＢＲ）、ニトリル・ブタジェンゴム、ア
クリロニトリル・ブタジェンゴム（ＮＢＲ）、クロロプ
レンゴム（ＣＲ）、ブタジェンゴム（ＢＲ）。As mentioned above, the X-ray protective case of the present invention is formed from a composition in which lead oxide and rubber are blended with polypropylene resin, but the polypropylene resin and lead oxide that make up this composition are 1. Normal commercially available products can be used. Examples of rubber include natural rubber, styrene-butadiene rubber (SBR), nitrile-butadiene rubber, acrylonitrile-butadiene rubber (NBR), chloroprene rubber (CR), and butadiene rubber (BR).
イソブチレン・イソプレンゴム（ＩＩＲ）、イソプレン
ゴム（ＩＲ）等の合成ゴムが挙げられるが、特にスチレ
ン・ブタジェンゴム、ニトリル・ブタジェンゴムが好適
に用いられる。Synthetic rubbers such as isobutylene-isoprene rubber (IIR) and isoprene rubber (IR) can be used, and styrene-butadiene rubber and nitrile-butadiene rubber are particularly preferably used.
これら成分の配合量は種々選定されるが、ポリプロピレ
ン樹脂の配合量は組成物全体の４０％以上、特に５０％
以上とするのがよく、酸化鉛の配合量は２０〜５０％、
特に３０〜４０％とすることが好ましい。酸化鉛の配合
量が少な過ぎるとＸ線防御効果が十分発揮されない場合
があり、多過ぎると耐疲労性や成形性、成形品外観を損
なう場合がある。更に、ゴムの配合量は１〜１０％、特
に３〜５％が好適で、ゴムの配合量が少なすぎると酸化
鉛の多量配合による悪影響が生じる場合があり、多過ぎ
ると出来上がった成形品が軟かくなり、商品価値をそこ
ねる場合がある。The blending amount of these components can be selected in various ways, but the blending amount of polypropylene resin should be 40% or more, especially 50% of the total composition.
The content of lead oxide is preferably 20 to 50%,
In particular, it is preferably 30 to 40%. If the amount of lead oxide is too small, the X-ray protection effect may not be sufficiently exhibited, and if it is too large, the fatigue resistance, moldability, and appearance of the molded product may be impaired. Furthermore, the amount of rubber compounded is preferably 1 to 10%, especially 3 to 5%; if the amount of rubber compounded is too small, a large amount of lead oxide may have an adverse effect, and if it is too large, the finished molded product may deteriorate. It may become soft and damage the product value.
なお、上記組成物中には、必要に応じ充填剤、着色剤、
酸化防止剤、紫外線吸収剤、帯電防止剤。In addition, in the above composition, fillers, colorants,
Antioxidants, UV absorbers, antistatic agents.
離燃剤等を常用範囲で配合できる。Flame retardants, etc. can be added within the usual range.
本発明のＸ線防御用ケースは、上記組成物を用いて射出
成形法等の適宜な成形方法により成形される。この場合
、ケースの形態は収納品に応じて選定されるが、ケース
本体に蓋体をヒンジ部を介して開閉可能に一体に連設し
た構成のケース形態が好適である。なお、ケース本体と
しては、上端が開放する四角箱形等に形成し得る。The X-ray protective case of the present invention is molded using the above composition by an appropriate molding method such as injection molding. In this case, the form of the case is selected depending on the items to be stored, but it is preferable to have a case form in which a lid body is integrally connected to the case body via a hinge portion so as to be openable and closable. Note that the case body may be formed in the shape of a square box or the like with an open top end.
以下、実施例と比較例を示し１本発明を具体的に説明す
るが１本発明は下記の実施例に制限されるものではない
。EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples and Comparative Examples; however, the present invention is not limited to the following Examples.
下記組成のプラスチック組成物を用いて図面に示すＸ線
防御用ケースを形成した。An X-ray protective case shown in the drawings was formed using a plastic composition having the following composition.
ポリプロピレン樹脂 ５５％
酸化鉛 ４０
ＳＢＲ５−−
１００、０％
ここで１図面のケースは、上端が開放する四角箱形のケ
ース本体１の一側上端にヒンジ部２を介してケース本体
１の上端開放部３を閉塞し得る四角板状の蓋体４を開閉
可能に一体に連設した構成を有する。Polypropylene resin 55% Lead oxide 40 SBR5-- 100, 0% Here, the case in Figure 1 has a square box-shaped case body 1 whose top end is open, and the top end of the case body 1 is opened via a hinge part 2 at the top end of one side of the case body 1. It has a configuration in which a rectangular plate-shaped lid 4 that can close the section 3 is integrally connected in an openable and closable manner.
下記組成のプラスチック組成物を用いて同様に図面に示
すケースを形成した。A case shown in the drawings was similarly formed using a plastic composition having the following composition.
ポリプロピレン樹脂 ６０％
鼠進ｍ−４０−
１００，０％
次に上記実施例、比較例のケースを用い、その蓋体をヒ
ンジ部において繰り返し開ｒＡ（折り返し）した。その
結果、実施例のケースは５０００回以上の開閉に耐え、
５０００回の折り返しでもヒンジ部に白化は生じなかっ
た。これに対し、比較例ノケースは、蓋体を５回開閉し
ただけでヒンジ部にクラックが発生し、破断した。Polypropylene resin 60% Mouse strength m-40- 100.0% Next, using the cases of the above Examples and Comparative Examples, the lids were repeatedly opened rA (folded back) at the hinge portions. As a result, the example case withstood opening and closing more than 5,000 times,
No whitening occurred at the hinge portion even after 5000 folds. On the other hand, in the case of Comparative Example, cracks occurred in the hinge portion and broke after the lid was opened and closed only five times.
また、実施例のケースは表面が平滑であり、ボイド、ジ
ャンカ、ムラ等の欠陥はないものであった。これに対し
、比較例のケースの外観はジャンカ、ムラの発生が見ら
れた。Further, the case of the example had a smooth surface and was free from defects such as voids, junkers, and unevenness. On the other hand, the appearance of the case of the comparative example showed occurrence of jitters and unevenness.
以上説明したように、本発明によれば酸化鉛を多量に配
合し得、このためＸ線遮蔽効果が高いものであると共に
、酸化鉛を多量に配合しても折り曲げに対する耐疲労性
が高く、かつ成形性、成形品外観が良好なものである。As explained above, according to the present invention, a large amount of lead oxide can be blended, and therefore the X-ray shielding effect is high, and even if a large amount of lead oxide is blended, the fatigue resistance against bending is high. Moreover, the moldability and appearance of the molded product are good.
図面は本発明の一実施例を示す斜視図である。 １・・・ケース本体 ２・・・ヒンジ部４・・・蓋体 出願人 藤 森 工 業 株式会社 代理人 弁理士 小 島 隆 司 The drawing is a perspective view showing an embodiment of the present invention. 1... Case body 2... Hinge part 4... Lid body Applicant Fujimori Kogyo Co., Ltd. Agent: Patent Attorney Takashi Kojima
Claims (1)
成物により形成されたＸ線防御用ケース。1. An X-ray protective case made of a composition containing polypropylene resin, lead oxide, and rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22936788A JPH0277696A (en) | 1988-09-13 | 1988-09-13 | X-ray protection case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22936788A JPH0277696A (en) | 1988-09-13 | 1988-09-13 | X-ray protection case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0277696A true JPH0277696A (en) | 1990-03-16 |
Family
ID=16891059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22936788A Pending JPH0277696A (en) | 1988-09-13 | 1988-09-13 | X-ray protection case |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0277696A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5908884A (en) * | 1996-09-24 | 1999-06-01 | Sumitomo Electric Industries, Ltd. | Radiation shielding material and producing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51119498A (en) * | 1975-04-11 | 1976-10-20 | Dainippon Toryo Co Ltd | Radial ray sheltering cover sheet |
| JPS5796296A (en) * | 1980-12-06 | 1982-06-15 | Mitsubishi Atomic Power Ind | Shielding filler |
| JPS57141430A (en) * | 1981-02-25 | 1982-09-01 | Keiichi Yamamoto | Lead-containing foam and its production |
| JPS6128542A (en) * | 1984-07-18 | 1986-02-08 | Mitsubishi Plastics Ind Ltd | Preparation of transparent lead-containing material |
-
1988
- 1988-09-13 JP JP22936788A patent/JPH0277696A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51119498A (en) * | 1975-04-11 | 1976-10-20 | Dainippon Toryo Co Ltd | Radial ray sheltering cover sheet |
| JPS5796296A (en) * | 1980-12-06 | 1982-06-15 | Mitsubishi Atomic Power Ind | Shielding filler |
| JPS57141430A (en) * | 1981-02-25 | 1982-09-01 | Keiichi Yamamoto | Lead-containing foam and its production |
| JPS6128542A (en) * | 1984-07-18 | 1986-02-08 | Mitsubishi Plastics Ind Ltd | Preparation of transparent lead-containing material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5908884A (en) * | 1996-09-24 | 1999-06-01 | Sumitomo Electric Industries, Ltd. | Radiation shielding material and producing method thereof |
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