JPS6350638B2 - - Google Patents
Info
- Publication number
- JPS6350638B2 JPS6350638B2 JP54150767A JP15076779A JPS6350638B2 JP S6350638 B2 JPS6350638 B2 JP S6350638B2 JP 54150767 A JP54150767 A JP 54150767A JP 15076779 A JP15076779 A JP 15076779A JP S6350638 B2 JPS6350638 B2 JP S6350638B2
- Authority
- JP
- Japan
- Prior art keywords
- explosive
- cylinder case
- closing disc
- case
- explosive cylinder
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/24—Cartridge closures or seals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Buffer Packaging (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
【発明の詳細な説明】
本発明は、少くともその一端が合成樹脂材料か
らなる円板により閉鎖された爆薬筒ケースに関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an explosive case whose at least one end is closed by a disc made of synthetic resin material.
（従来の技術）
ゼラチン状ニトログリセリン爆薬、水性スラリ
ー爆薬、硝酸アンモニウム粉状爆薬を含む爆薬組
成物は、長年にわたり、剛直な筒状の板紙または
硬い合成樹脂製爆薬筒ケースにより包装されてき
た。該ケースの端部は、該ケースの壁の一部を内
方にひだ付けするか、あるいは薄い板紙または合
成樹脂製円板で蓋することにより閉鎖されてい
る。BACKGROUND OF THE INVENTION Explosive compositions, including gelatinous nitroglycerin explosives, aqueous slurry explosives, and ammonium nitrate powder explosives, have been packaged in rigid cylindrical paperboard or hard synthetic resin cartridge cases for many years. The ends of the case are closed by pleating part of the case wall inward or by capping with a thin paperboard or plastic disc.
（考案が解決しようとする問題点）
しかしながら、基準爆発性ガス点火試験によ
り、従来公知の中実の合成樹脂円板からなる爆薬
筒の閉鎖蓋は、爆発性ガス点火の可能性を著しく
増加させるため、炭鉱用爆薬筒に用いるべきでな
いことが判明した。(Problem to be solved by the invention) However, according to the standard explosive gas ignition test, the conventionally known closure lid of the explosive cylinder consisting of a solid synthetic resin disc significantly increases the possibility of explosive gas ignition. Therefore, it was found that it should not be used in explosive cylinders for coal mines.
更に、岩盤爆破用の湿つた穴の中で爆薬筒とし
て用いる場合、変形自在で水に敏感な水性スラリ
ー爆薬などの爆薬は、通常、まずポリエチレンな
どの薄くて可撓な合成樹脂材料からなる密閉され
た防水性内袋に入れ、ついで該内袋を板紙または
合成樹脂製の剛直または硬い筒状の容器に入れて
いるが、合成樹脂製内袋の封止及び剛直な容器の
端部をふさぐ必要から、隣接する爆薬筒内の爆薬
間の間隔が過大となり、小径の比較的鈍感な爆薬
の場合、相接して棒状に並ぶ爆薬筒列の隣接爆薬
筒間で、爆発が伝達しないことがしばしば発生す
る。したがつて、爆薬筒間の爆発の伝達をあまり
妨害することなく、また爆発点近くの爆発性ガス
に点火する危険の増大なしに、周囲の水から爆薬
を保護する爆薬筒ケースが求められている。 Furthermore, when used as a cartridge in a moist rock blasting hole, explosives such as deformable and water-sensitive aqueous slurry explosives are usually first sealed with a thin, flexible synthetic resin material such as polyethylene. Then, the inner bag is placed in a rigid or hard cylindrical container made of paperboard or synthetic resin, but the synthetic resin inner bag is sealed and the ends of the rigid container are closed. As a result of necessity, the distance between the explosives in adjacent cartridges is excessive, and in the case of small-diameter, relatively insensitive explosives, the explosion may not be transmitted between adjacent cartridges in rows of adjacent explosive cylinders. Occurs often. Therefore, there is a need for a cartridge case that protects the explosive from the surrounding water without significantly interfering with the transmission of the explosion between the cartridges and without increasing the risk of igniting explosive gases near the detonation point. There is.
したがつて、本発明の一目的は、剛直な爆薬筒
ケース用の改良された防水性端部閉鎖構造を提供
することにある。 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an improved waterproof end closure structure for a rigid cartridge case.
（問題点を解決するための手段）
本発明においては、爆薬筒ケースの少くとも一
端が、爆薬筒ケースの内径よりも大きな非圧縮時
直径を有する弾性独立気泡発泡合成樹脂からなる
閉鎖用の円板により閉じられる。閉鎖用の円板の
寸法は、円板の外周部がその弾性により爆薬筒ケ
ースの内周面に圧接して爆薬筒ケースを周囲の水
の侵入に対し密封できる大きさにされる。(Means for Solving the Problems) In the present invention, at least one end of the explosive cylinder case has a closing circle made of an elastic closed-cell foamed synthetic resin having an uncompressed diameter larger than the inner diameter of the explosive cylinder case. Closed by a board. The dimensions of the closing disc are such that the outer periphery of the disc comes into pressure contact with the inner peripheral surface of the explosive cylinder case due to its elasticity, thereby sealing the explosive cylinder case against intrusion of surrounding water.
爆薬筒ケースの端部は平らであつてもよいが、
もし玉縁を形成するように爆薬筒ケースの端部を
内側に折返えすならば、または、もし閉鎖用の円
板に係合してそれを所定位置に保持するように、
１個または複数個の内方突起たとえば１個または
複数個のみぞを爆薬筒ケースの端部に形成するな
らば、閉鎖用の円板はより確実に保持される。 The edges of the cartridge case may be flat, but
If the end of the cartridge case is folded inward to form a bead, or if it engages a closing disc to hold it in place,
The closing disc is held more securely if one or more internal projections, for example one or more grooves, are formed at the end of the cartridge case.
発泡の程度と閉鎖用の円板の厚さはあまり重要
でなく、発泡材料は所要の密封をするのに十分な
弾性をもつていればよい。30〜70Kg／m3の密度を
もつ発泡材料は大体満足でき、１：2.5〜１：５
の厚さ対非圧縮時直径の比をもつ円板は、十分な
密封を与え、変位に抵抗し、また現場で雷管の差
込みのため容易に刺通可能である。 The degree of foaming and the thickness of the closure disc are not critical, as long as the foam material has sufficient resiliency to provide the required seal. Foamed materials with a density of 30-70Kg/ m3 are generally satisfactory, 1:2.5-1:5
A disk having a thickness to uncompressed diameter ratio of , provides sufficient sealing, resists displacement, and is easily pierceable for insertion of a detonator in the field.
点火性ガスが発生する鉱山で使う爆薬筒には、
なるべく不活性ガス例えば窒素を吹込んだ発泡ポ
リエチレンからなる閉鎖用の円板が好適である。
手頃な容易に作れる閉鎖用の円板は、発泡合成樹
脂材料、例えばベークライト キシロナイト株式
会社（Bakelite Xylonite Limited）から登録商
名プラスタゾート（Plastazote）の名で商業上得
られる独立気泡発泡ポリエチレンの薄板から型打
ちにより形成されたものである。 Explosive cylinders used in mines that generate ignitable gas include:
A closing disc made of foamed polyethylene, preferably blown with an inert gas, such as nitrogen, is preferred.
Affordable and easily made closure discs are molded from sheets of foamed synthetic resin material, such as closed cell foamed polyethylene, commercially available from Bakelite Xylonite Limited under the registered trade name Plastazote. It was formed by hammering.
円板の非圧縮時直径は、爆薬筒ケースの内径よ
り10〜25％大とするのがよい。30mmの内径をもつ
爆薬筒ケースには、33〜37.5mm、好ましくは35mm
の直径をもつ円板が好ましい。この場合、円板の
厚さは好ましくは７〜12mmである。 The uncompressed diameter of the disc is preferably 10 to 25% larger than the internal diameter of the explosive case. 33-37.5mm, preferably 35mm for explosive cylinder cases with an internal diameter of 30mm
Discs with a diameter of . In this case, the thickness of the disc is preferably 7 to 12 mm.
爆薬筒ケースはその目的に一般に使われる材
料、例えば板紙、つる巻状に巻いた多層紙、また
は押出成形合成樹脂から作られる。 The cartridge case is made from materials commonly used for that purpose, such as paperboard, helical multilayer paper, or extruded synthetic resin.
以下、本発明を添付図面につき説明する。各図
において類似な部分を同じ符号で指示する。 The invention will now be explained with reference to the accompanying drawings. Similar parts in each figure are designated by the same reference numerals.
第１図の爆薬筒ケースの端部においては、弾性
独立気泡ポリエチレンからならる円板１１が爆薬
筒ケース１２の端部に嵌合されている。非圧縮状
態では、円板１１は爆薬筒ケース１２の内径より
大きな直径をもつているが、爆薬筒ケース１２の
中へ嵌合させるため圧縮されている。円板１１
は、その弾性により爆薬筒ケース１２の内周面に
緊密に圧接して水の侵入に対して爆薬筒ケースを
密封し、爆薬筒内の爆薬、例えば水性スラリー爆
薬または硝酸アンモニウムを基礎にした粉状爆薬
などを周囲の水から保護する。爆薬筒ケース１２
の他端部は、もし望むなら、他の防水性の蓋を使
つてもよいが、同様な蓋で閉じてもよい。 At the end of the explosive case 12 in FIG. In the uncompressed state, the disc 11 has a diameter greater than the inside diameter of the cartridge case 12, but is compressed to fit into the cartridge case 12. Disk 11
Due to its elasticity, it presses tightly against the inner circumferential surface of the explosive case 12 and seals the case against water intrusion, and the explosive in the explosive case, such as an aqueous slurry explosive or a powder based ammonium nitrate, is Protect explosives, etc. from surrounding water. Explosive cylinder case 12
The other end may be closed with a similar lid, although other waterproof lids may be used if desired.
第２図では、爆薬筒ケース１２の端部を折返え
して玉縁１３が形成され、円板１１は玉縁１３に
当接している。それにより、円板は爆薬筒ケース
が変形しても爆薬筒ケース１２から外れにくくな
つている。 In FIG. 2, the end of the explosive cylinder case 12 is folded back to form a bead 13, and the disc 11 is in contact with the bead 13. This makes it difficult for the disc to come off from the explosive cylinder case 12 even if the explosive cylinder case is deformed.
第３図の爆薬筒ケースの端部においては、爆薬
筒ケースはその端部に二つの溝１４，１５が形成
され、円板は該溝１４，１５の間に位置ぎめされ
ている。 At the end of the cartridge case in FIG. 3, the cartridge case is formed with two grooves 14, 15 at its ends, and the disc is positioned between the grooves 14,15.
第４図の爆薬筒ケースの端部は第３図の爆薬筒
ケースの端部の変型であり、この変型では、爆薬
筒ケース１２の開口端は内ねじ付き部分１６を設
けるため、溝１４を越えて伸長し、隣接した爆薬
筒ケースの端部の外ねじ付き部分を受ける内ねじ
付き部分１６を構成している。爆薬筒の端部を相
互にねじ込むことにより、穴の中への装てん用の
１列の爆薬筒を容易に組立てることができる。 The end of the cartridge case of FIG. 4 is a variation of the end of the cartridge case of FIG. Extending beyond is an internally threaded portion 16 which receives an externally threaded portion of the end of an adjacent cartridge case. By threading the ends of the cartridges together, a row of cartridges can be easily assembled for loading into the bore.
（発明の効果）
本発明によれば、爆薬筒周辺の爆発性ガスへの
点火の危険を著しく増加することなく、また、そ
の使用に際し、棒状一列に隣接（又は連結）する
各爆薬筒間での爆発の伝達が確実になされる防水
性爆薬筒を得ることができる。(Effects of the Invention) According to the present invention, the risk of ignition of explosive gas around the explosive cylinder is not significantly increased, and when the explosive gas is used, it is possible to It is possible to obtain a waterproof explosive cartridge that ensures reliable transmission of the explosion.
第１−４図は、それぞれ、別個の本発明に係る
爆薬筒ケースの要部の縦断面図である。
１１：円板、１２：爆薬筒ケース、１３：玉
縁。
1-4 are longitudinal sectional views of main parts of separate explosive cylinder cases according to the present invention. 11: Disc, 12: Explosive cylinder case, 13: Bead.
Claims (1)
径を有する合成樹脂材料からなる閉鎖用の円板１
１により少くとも一端が閉じられる爆破作業用の
爆薬筒ケース１２において、閉鎖用の円板１１が
不活性ガスの吹込みにより発泡された弾性独立気
泡発泡合成樹脂材料からつくられ、また、その寸
法が、閉鎖用の円板１１の弾性により爆薬筒ケー
スが周囲の水の進入に対し密閉されるように爆薬
筒ケース１２に対し十分な外向き反径方向圧を発
生する大きさになつていることを特徴とする爆破
作業用の爆薬筒ケース。 ２ 爆薬筒ケース１２の開口端縁を内側に折返し
て、前記の閉鎖用の円板１１を係止する玉縁１３
を形成したことを特徴とする、特許請求の範囲第
１項に記載の爆薬筒ケース。 ３ 爆薬筒ケースの開口端部分に形成した１個ま
たは複数個の環状溝により閉鎖用の円板が係止保
持されていることを特徴とする、特許請求の範囲
第１項に記載の爆薬筒ケース。 ４ 前記弾性独立気泡発泡合成樹脂材料が30〜70
Kg／m3の密度をもつことを特徴とする、特許請求
の範囲第１〜３項のうちのいずれかに記載の爆薬
筒ケース。 ５ 閉鎖用の円板が１：2.5〜１：５の厚さ対非
圧縮時直径比をもつことを特徴とする、特許請求
の範囲第１〜４項のうちのいずれかに記載の爆薬
筒ケース。 ６ 閉鎖用の円板が弾性独立気泡発泡ポリエチレ
ンから作られていることを特徴とする、特許請求
の範囲第１〜５項のうちのいずれかに記載の爆薬
筒ケース。 ７ 閉鎖用の円板の弾性独立気泡発泡合成樹脂材
料が窒素の吹込みにより発泡されていることを特
徴とする、特許請求の範囲第１〜６項のうちのい
ずれかに記載の爆薬筒ケース。 ８ 閉鎖用の円板の非圧縮時直径が爆薬筒ケース
の内径より10〜25％大きいことを特徴とする、特
許請求の範囲第１〜７項のうちのいずれかに記載
の爆薬筒ケース。 ９ 爆薬筒ケースがボール紙、つる巻状に巻いた
多層紙、または押出し合成樹脂材料からなること
を特徴とする特許請求の範囲第１〜８項のうちの
いずれかに記載の爆薬筒ケース。 １０ 特許請求の範囲第１〜９項のうちのいずれ
かに記載の爆薬筒ケースに、ゼラチン状のニトロ
グリセリン爆薬、水性スラリー爆薬、または硝酸
アンモニウム粉状爆薬を収容しているところの爆
薬筒。[Claims] 1. A closing disc 1 made of a synthetic resin material and having an uncompressed diameter larger than the inner diameter of the explosive cylinder case.
1, the closing disc 11 is made of an elastic closed-cell foamed synthetic resin material foamed by blowing inert gas, and its dimensions are as follows: However, the elasticity of the closing disc 11 is sized to generate sufficient outward radial pressure against the cartridge case 12 so that the cartridge case is sealed against ingress of surrounding water. An explosive cylinder case for use in demolition work. 2 The opening edge of the explosive cylinder case 12 is folded inward to form a bead 13 that locks the closing disc 11.
The explosive cylinder case according to claim 1, characterized in that the explosive cylinder case is formed with: 3. The explosive cartridge according to claim 1, wherein the closing disc is retained by one or more annular grooves formed in the open end portion of the explosive cylinder case. Case. 4 The elastic closed-cell foamed synthetic resin material is 30 to 70
Explosive cylinder case according to any one of claims 1 to 3, characterized in that it has a density of Kg/m 3 . 5. Explosive cartridge according to any one of claims 1 to 4, characterized in that the closing disc has a thickness to uncompressed diameter ratio of 1:2.5 to 1:5. Case. 6. Explosive cylinder case according to any one of claims 1 to 5, characterized in that the closing disc is made of elastic closed-cell foamed polyethylene. 7. Explosive cylinder case according to any one of claims 1 to 6, characterized in that the elastic closed-cell foamed synthetic resin material of the closing disc is foamed by blowing nitrogen. . 8. The explosive cylinder case according to any one of claims 1 to 7, wherein the uncompressed diameter of the closing disc is 10 to 25% larger than the inner diameter of the explosive cylinder case. 9. The explosive cylinder case according to any one of claims 1 to 8, characterized in that the explosive cylinder case is made of cardboard, helically wound multilayer paper, or extruded synthetic resin material. 10. An explosive cartridge containing a gelatinous nitroglycerin explosive, an aqueous slurry explosive, or an ammonium nitrate powder explosive in the explosive cartridge case according to any one of claims 1 to 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7901348 | 1979-01-15 | ||
| GB7937952A GB2040412B (en) | 1979-01-15 | 1979-11-01 | Cartridge end-closure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5596899A JPS5596899A (en) | 1980-07-23 |
| JPS6350638B2 true JPS6350638B2 (en) | 1988-10-11 |
Family
ID=26270224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15076779A Granted JPS5596899A (en) | 1979-01-15 | 1979-11-22 | Explosive casing |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0013473B1 (en) |
| JP (1) | JPS5596899A (en) |
| AU (1) | AU525543B2 (en) |
| CA (1) | CA1146803A (en) |
| GB (1) | GB2040412B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60181600U (en) * | 1984-05-08 | 1985-12-02 | 旭化成株式会社 | safety jacket |
| AUPP225298A0 (en) * | 1998-03-10 | 1998-04-02 | Orica Australia Pty Ltd | Method and device for loading blastholes |
| US8006622B2 (en) | 2006-11-07 | 2011-08-30 | Orica Explosives Technology Pty Ltd | Protector for detonator, and method of use |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE183441C (en) * | ||||
| BE422629A (en) * | 1938-04-15 | |||
| US2345887A (en) * | 1940-04-05 | 1944-04-04 | Hercules Powder Co Ltd | Method of sealing containers |
| US2930275A (en) * | 1955-11-15 | 1960-03-29 | American Cyanamid Co | Method of sealing spirally wound dynamite containers |
| US2916995A (en) * | 1956-05-17 | 1959-12-15 | Du Pont | Tamping plug |
| US2996232A (en) * | 1956-09-14 | 1961-08-15 | Du Pont | End closures |
| US2918003A (en) * | 1957-04-29 | 1959-12-22 | Mine Safety Appliances Co | Deep water cartridge |
| FR1365996A (en) * | 1963-04-02 | 1964-07-10 | Ruggieri Ets | Cartridge especially for explosives |
| US3264992A (en) * | 1964-03-09 | 1966-08-09 | Marlin E Beck | Tamping plug |
| NL6511016A (en) * | 1964-09-12 | 1966-03-14 | ||
| DE1288544B (en) * | 1968-01-31 | 1969-02-06 | Dynamit Nobel Ag | Procedure to increase safety when shooting in coal mining |
| US3477373A (en) * | 1968-04-04 | 1969-11-11 | Us Navy | Underwater demolition package |
| AU462018B2 (en) * | 1970-09-21 | 1975-06-12 | Ici Australia Limited | Improvements in and relating to resilient stemming devices |
| FR2254486A1 (en) * | 1973-12-17 | 1975-07-11 | Kwm Schlichter Et Suss Kg | Closed cell foam bottle stopper - has dense smooth external surface and inner cork granules |
| DE2506865A1 (en) * | 1975-02-18 | 1976-08-26 | Feistel Pyrotech Fab | Sealing-filling residual spaces of cartridges - by introducing synthetic resin into space and foaming a resin to effect sealing-filling |
| FR2307843A1 (en) * | 1975-04-15 | 1976-11-12 | Simflex | Cork substitute compsn. for closing foodstuff containers - comprising polyisoprene styrene butadiene copolymer, fillers, blowing and vulcanising agents |
| DE2629417C2 (en) * | 1975-06-30 | 1983-05-11 | Denka Chemical Corp., 77017 Houston, Tex. | Elastomeric composition made from a polychloroprene sol-gel mixture |
| US4000696A (en) * | 1975-09-05 | 1977-01-04 | Excoa, Inc. | Cartridge for two component field mixed explosive |
| US4091136A (en) * | 1976-05-17 | 1978-05-23 | Shaw Plastics Corporation | Synthetic cork-like material and method of making same |
-
1979
- 1979-11-01 GB GB7937952A patent/GB2040412B/en not_active Expired
- 1979-11-01 EP EP79302408A patent/EP0013473B1/en not_active Expired
- 1979-11-15 AU AU52834/79A patent/AU525543B2/en not_active Ceased
- 1979-11-22 JP JP15076779A patent/JPS5596899A/en active Granted
- 1979-12-14 CA CA000342099A patent/CA1146803A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA1146803A (en) | 1983-05-24 |
| EP0013473B1 (en) | 1986-12-17 |
| AU525543B2 (en) | 1982-11-11 |
| EP0013473A1 (en) | 1980-07-23 |
| AU5283479A (en) | 1980-07-24 |
| GB2040412B (en) | 1982-08-04 |
| GB2040412A (en) | 1980-08-28 |
| JPS5596899A (en) | 1980-07-23 |
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