US20050109230A1 - Process for the production of a thermal shock tube, and the product thereof - Google Patents

Process for the production of a thermal shock tube, and the product thereof Download PDF

Info

Publication number
US20050109230A1
US20050109230A1 US10/944,921 US94492104A US2005109230A1 US 20050109230 A1 US20050109230 A1 US 20050109230A1 US 94492104 A US94492104 A US 94492104A US 2005109230 A1 US2005109230 A1 US 2005109230A1
Authority
US
United States
Prior art keywords
tube
shock
low
pyrotechnic
shock tube
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.)
Abandoned
Application number
US10/944,921
Other languages
English (en)
Inventor
Marco Falquete
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.)
IBQ INDUSTRIAS QUIMICAS S/A
Original Assignee
BRITANITE S/A-INDUSTRIAS QUIMICAS
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 BRITANITE S/A-INDUSTRIAS QUIMICAS filed Critical BRITANITE S/A-INDUSTRIAS QUIMICAS
Assigned to BRITANITE, S/A-INDUSTRIAS QUIMICAS reassignment BRITANITE, S/A-INDUSTRIAS QUIMICAS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FALQUETE, MARCO ANTONIO
Publication of US20050109230A1 publication Critical patent/US20050109230A1/en
Assigned to IBQ INDUSTRIAS QUIMICAS S/A reassignment IBQ INDUSTRIAS QUIMICAS S/A ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRITANITE S/A INDUSTRIAS QUIMICAS
Priority to US14/467,960 priority Critical patent/US9541366B2/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
    • C06B33/12—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide the material being two or more oxygen-yielding compounds
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C5/00—Fuses, e.g. fuse cords
    • C06C5/04—Detonating fuses

Definitions

  • the present invention relates generally to explosive signal transmission devices, and more particularly is a thermal shock tube and the method of manufacturing the shock tube.
  • non-electric detonators or “shock tubes”
  • shock tubes have been widely used for connecting and initiating explosive charges in the mining and quarrying industries.
  • Such devices marketed with brands like NONEL, EXEL, BRINEL, etc., came to be substituted for electric blasting caps ignited by metallic wiring, and represented a revolution in the market of detonation accessories, due to the ease of connection and application, and to the intrinsic safety against accidental ignition by induction of spurious electric current.
  • U.S. Pat. No. 3,590,739 is the original reference for a conventional shock tube.
  • the reference describes a process of plastic extrusion forming a circular tube with an outer diameter varying from 2.0 to 6.0 mm and an inner diameter varying from 1.0 to 5.0 mm.
  • a secondary explosive powder such as HMX, RDX or PETN, is introduced into its inner periphery during formation of the tube.
  • the resulting product is known as a non-electric shock tube, and is marketed with trade names such as NONEL and EXEL.
  • a conventional shock tube When initiated by a primary explosive blasting cap, a conventional shock tube generates a gaseous shock wave with a signal transmission speed ranging from 1,800 to 2,200 m/s.
  • Further improvements include the addition of aluminum to increase specific energy and utilization of ionomeric polymers, like SURLYN, to increase adhesiveness of the powder.
  • U.S. Pat. No. 4,328,753 describes a conventional shock tube with two layers: an inner layer made of a polymer which provides adhesiveness to the explosive powder mixture, and an outer layer made of a polymer which provides mechanical strength.
  • SURLYN is most suitable for the inner polymer layer, and polypropylene, polyamide, or polybutene is used for the outer layer. This product was an improvement over the original NONEL tube, as SURLYN alone is expensive and has a low resistance to external damage.
  • the best conventional shock tubes continue to be made in two layers, and the inner layer continues to be SURLYN, as even a low dislodgement of poorly adhered explosive powder may lead to failures in signal propagation due to discontinuities in the powder layer or by concentration of loose powder in the lower parts of the tube during field application.
  • U.S. Pat. No. 5,166,470 describes a single-layer tube of LLDPE similar to that of EP 027 219, but with an additional thin layer of a hydrophilic polymer, like Polyvinyl Alcohol (PVA), is deposited by passing the plastic tube through a solution of polymer in a liquid, e.g. water, and drying the solvent. The aim is to make the tube less permeable to the hydrocarbons present in an emulsion explosive. Hot diesel fuel is particularly aggressive to LLDPE, and prolonged contact of the tube with hot, diesel fuel-based emulsions causes failure in signal propagation.
  • the PVA protective skin is fragile and does not adhere well to the LLDPE, and so a pretreatment with a cleaner (like chromic acid), with hot air or with an adhesion promoter (like Vinamul EVA copolymer) is necessary.
  • pyrotechnic shock tubes are the following:
  • the resulting product is designated as a pyrotechnic shock wave tube, and is marketed with the trade name BRINEL.
  • a primary explosive detonator When initiated by a primary explosive detonator, such a tube generates an aluminothermy reaction without gas releases, and develops a plasma for energy transmission.
  • U.S. Pat. No. 4,757,764 describes a non-electric system for controlling an initiation signal in blasting operations using a plastic tube with pyrotechnic delay mixtures adhered to its interior.
  • This device uses low speed reactions, with much slower speeds than those of conventional shock tubes and detonating cords, with the object being to use predetermined lengths of tube to obtain a delay time in the milliseconds range, the tube being substituted for a conventional delay element.
  • the blasting caps connected to the plastic tube are necessarily instantaneous, without delay elements in the cap. There was therefore no attempt by the inventor to optimize the thermal action of a spark, nor to eliminate toxic components, nor to guarantee the crossing through restrictions in the tube.
  • Signal transmission tubes are usually complemented with the insertion of a delay blasting cap in the tip of the tube.
  • the blasting cap is made of a metal cap containing two layers of explosive powder pressed inside.
  • the bottom layer is a secondary high explosive, and the upper layer is a primary, flame-sensitive explosive.
  • the cap further includes a delay element consisting of a metallic cylinder containing in its interior a compacted column of powdery pyrotechnic delay mixture and, frequently, an additional column of pyrotechnic mixture sensitive to the heat generated by the tube's shock wave.
  • the reaction products are basically hot gases which, when leaving the final extremity of the tube, expand with loss of heat, such heat loss inhibiting the ignition of the pyrotechnic delay mixture.
  • Slower delay powders are particularly insensitive to the shock tube output. It is therefore necessary either to add an additional column of a sensitive pyrotechnic mixture to give continuity to the explosive train or to use pyrotechnic mixtures more sensitive to heat and with larger column length.
  • the final product has greater production costs, and the processing and handling of the pyrotechnic mixture entails significant accidental ignition risks.
  • Conventional shock tubes are sensitive to the effect designated in the industry as “snap, slap, and shoot”. An unexpected ignition can occur if the tube is stretched causing rupture, in particular conditions of mechanical energy release, as recognized in an article presented in the 28th Annual conference of the ISEE, Las Vegas, 2002, and in all catalogs and technical bulletins of conventional shock tubes.
  • Conventional shock tubes can fail to propagate after prolonged underwater exposure above 2 bar pressure, as is often found in field practice, due to the hydrophilic characteristics of the ionomeric resins like SURLYN.
  • Tubes manufactured with SURLYN alone have a low tensile strength, and a low resistance to abrasion, kinks, knots, etc., demanding co-extrusion of an additional outer layer of polyethylene. This improved process still includes the use of expensive SURLYN.
  • a pyrotechnic shock tube as disclosed in Brazilian patent PI 8104552, from the applicant of the present patent, has the following disadvantages:
  • A) Pyrotechnic mixtures use toxic components (K 2 Cr 2 O 7 , Sb 2 O 3 , Sb 2 O 5 ) and flammable solvents, demanding recycling of the solvents, and creating handling issues and requiring appropriate waste disposal.
  • the process of extrusion of the plastic tube includes the dosing of a previously prepared sensitive pyrotechnic mixture during the formation of the plastic tube, with safety risks in handling and processing.
  • a pyrotechnic shock tube does not resist aggression from the hydrocarbons present in emulsion explosives, and prolonged exposure leads to failures in propagation.
  • reaction products formed in the aluminothermy reactions, Al 2 O 3 , K 2 O, Sb, antimony oxides, Cr 2 O 3 necessarily solids by the claimed limitations, have low thermal conductivity, which inhibits the ignition of slower, low sensitive delay elements.
  • the powdered pyrotechnic mixture also presents a low adherence to the tube polymer, particularly in LLDPE.
  • the process also includes the dosing of a previously prepared sensitive pyrotechnic mixture, during the formation of the plastic tube, with safety risks in handling and processing.
  • the system makes use of direct tube-to-tube connections for supplying a time delay exclusively through a predetermined length of tube, and is limited to fast delays, in the range of tens of milliseconds, while field blasting operations demand delay timing up to 10 s.
  • the present invention is a thermal shock tube and the method of manufacturing the shock tube.
  • the shock tube is used as a signal transmission device for connecting and initiating explosive columns, or as a flame conductor.
  • the device is usually complemented by a delay element, or it can be used as a delay unit.
  • the shock tube uses a pyrotechnic mixture with low sensitivity to ignition by shock or friction, with low toxicity, which generates a spark with superior thermal performance.
  • the manufacturing process utilizes continuous and separated dosing of the individual non-active components, in conjunction with the formation of the plastic tube, making the process safer and yielding a more accurate dosing.
  • the resultant product maintains the advantages of current art pyrotechnic shock tubes relative to the shock wave propagating tube, i.e.
  • the shock tube of the present invention gives the following additional advantages: use of low toxicity components, use of ordinary, low cost, low adhesiveness polymers, generation of a spark that propagates through knots, closed kinks or tube obstructions, and resistance to failure by attack of components of hot explosive emulsions.
  • the focus of the present invention is to obtain desirable characteristics in the polymers that form the tube, but not to optimize the pyrotechnic mixtures formulation, in order to use ordinary, low cost polymers.
  • the new approach is also multipurpose, i.e., to obtain the greatest possible number of desirable characteristics through the formulation of the pyrotechnic mixture.
  • the process and product from this invention have the following advantages over the current art shock tubes:
  • FIG. 1 shows a block diagram of the manufacturing process for the thermal shock tube of the present invention.
  • FIG. 2 shows the thermal shock tube spark as it leaves the tube tip.
  • FIG. 3 shows the basically gaseous products of a conventional shock tube when leaving the tube tip.
  • One of the invention objectives is to obtain enough activation energy to ensure the initiation and propagation of the pyrotechnic reaction even with contamination of the interior of the tube by hydrocarbon fuel coming from the explosive emulsion, such contamination decreasing the enthalpy pyrotechnic reaction.
  • Examples of low-Tammann temperature substances suitable for the pyrotechnic mixture are potassium perchlorate, potassium chlorate, antimony trisulfide, sulfur, potassium nitrate, ammonium perchlorate, sodium chlorate, or any other substance whose temperature of Tammann is adapted to this purpose.
  • a pyrotechnic reaction that generates products with high thermal conductivity and thermal convection coefficient will allow better propagation continuity, and will ignite delay elements with greater thermal efficiency, allowing the use of smaller, slower delay columns without additional ignition elements.
  • relevant oxidation-reduction reactions we have:
  • Certain products have lubricating properties and superficial adherence properties, which reduce the effects of friction and mechanical shock of the mixture, and provide adhesiveness even to difficult polymers like pure LLDPE.
  • examples of such products are: talc (magnesium and aluminum hydrosilicate) and graphite.
  • Another unique feature of the process of the present invention is that the mixture of the oxidizers and additive is done separately from the fuels or reduction agents.
  • the final active mixture is obtained in the plastic extruder, in an automated, continuous or semi-batch process, so that just a very small amount of pyrotechnic mixture is formed at any instant. This minimizes the hazard of an accidental ignition of the tube during production.
  • the spark is constituted as much by products of high heat transfer as by gaseous products so that the heat transfer allows continuity of the pyrotechnic signal transmission so as to provide the mechanical impulse for releasing the spark from the open portion of the tube.
  • Speed of propagation test A tube portion with a length of 5 m is placed between two optical sensors linked to a precision chronometer. When the tube is ignited, the spark passes the first sensor to trigger the chronometer. When the spark passes the second sensor, the timing is ended. The propagation speed is obtained by dividing 5 by the time measured in seconds.
  • Low energy detonating cord initiation 100 samples of 1 m long tubes are connected to a line of detonating cord with a core loading of 2 grams/m of PETN, through a “J” type connector, and the detonating cord is initiated. The number of tubes which fail to propagate is recorded as “percentage of failures in initiation by 2 grams/m detonating cord”.
  • the thermal shock tube is ignited, the spark should cross the free space from the hose interior and start the delay element.
  • the largest hose length for ignition in 5 successive samples is recording as “sensibility of the slow delay element”.
  • Tube-to-tube “air gap” A 3 m long thermal shock tube is transversally cut and the tube halves are moved a measured distance apart, maintaining their alignment through an aluminum guide in “half-pipe” format. The largest distance that the spark can cross the gap between the tube portions and initiate the second portion in 5 successive samples, is recording as “all-fire air gap”.
  • Adherence of the mixture to the tube 10 tube samples 5 m long are weighed in an analytical scale with an accuracy of 0.0001 g. The interiors of the tubes are flushed by compressed air with a flow rate of 0.3 Nm 3 /minute for 2 minutes, to remove the non-adhered powder. The tubes are weighed again and the weight is recorded. The interior of the tubes is washed with a flow of sodium hydroxide aqueous solution for dissolution of the aluminum and perchlorate, and iron oxide and talc, eliminating the adhered powder. The empty plastic tube is weighed. After determination of the tube's inner diameter the surface area is calculated and the free powder load by area rate, the adhered powder load by area rate, and the percentile rate of free powder mass by total powder mass are calculated.
  • the formulation Al/Fe 3 O 4 /KClO 4 /Talc in the respective percentiles 40/27.5/31.5/1.0 is optimal for the shock tube of the present invention.
  • a high content of aluminum fuel with 65% Al, with a corresponding lower speed of 750 m/s, means an insufficient spark performance in the propagation through kinks and knots, and a very low sensibility of the slow delay element.
  • a very low aluminum fuel content, as in the formulation 30/32.5/36.5/1.0 will generate a very high gaseous volume, dispersing the spark products at the tube tip, reducing the sensibility of the slow delay element and the “all-fire air gap”.
  • the results confirm the efficacy of the talc in improving the adherence of the mixture to the tube and in decreasing the mixture shock sensibility.
  • the optimized formulation for the thermal shock tube is:
  • thermal shock tube the process for the production of a thermal shock tube is as follows:
  • Additional optional processing steps include tube cooling, stretching of the tube to obtain a desired tensile strength, thermal treatment of the tube, and other techniques known in the plastic processing art.
  • the final product a thermal shock tube according to the present invention, has a conventional plastic tube, such as EVA, POLYETHYLENE, LLDPE or SURLYN, with an outer diameter ranging from 2.0 to 6.0 mm, and an inner diameter ranging from 1.0 to 5.0 mm.
  • the tube includes 5 to 40 mg/m of pyrotechnic mixture adhered to its internal walls.
  • FIG. 2 shows the thermal shock tube spark as it leaves the tip of the tube during propagation.
  • the drawing represents a high velocity photograph of the tube spark.
  • FIG. 2 shows the high temperature solid and melted products (1), such products including highly thermal conductive and convective melted iron, and the gaseous products (2), which are responsible for the melted jet projection at the tube tip.
  • FIG. 3 shows, for comparison, the basically gaseous products of a conventional shock tube (prior art) as they leave the tip of the tube during propagation.
  • This drawing also represents a high velocity photograph of the tube flame, and it can be seen that the basically gaseous products (1) are being dispersed by gas expansion at the tube's end.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Air Bags (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Pipe Accessories (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US10/944,921 2003-09-19 2004-09-17 Process for the production of a thermal shock tube, and the product thereof Abandoned US20050109230A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/467,960 US9541366B2 (en) 2003-09-19 2014-08-25 Thermal shock tube and the process of production thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI0303546-8 2003-09-19
BRPI0303546-8A BR0303546B8 (pt) 2003-09-19 2003-09-19 tubo de choque tÉrmico.

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/467,960 Continuation-In-Part US9541366B2 (en) 2003-09-19 2014-08-25 Thermal shock tube and the process of production thereof

Publications (1)

Publication Number Publication Date
US20050109230A1 true US20050109230A1 (en) 2005-05-26

Family

ID=34318711

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/944,921 Abandoned US20050109230A1 (en) 2003-09-19 2004-09-17 Process for the production of a thermal shock tube, and the product thereof

Country Status (26)

Country Link
US (1) US20050109230A1 (de)
EP (1) EP1663913B1 (de)
JP (1) JP2007505807A (de)
KR (1) KR100848214B1 (de)
CN (1) CN100506758C (de)
AP (1) AP1838A (de)
AR (1) AR045772A1 (de)
AT (1) ATE407105T1 (de)
AU (1) AU2004274048B2 (de)
BR (1) BR0303546B8 (de)
CA (1) CA2538734A1 (de)
CO (1) CO5630033A1 (de)
DE (1) DE602004016355D1 (de)
EA (1) EA009360B1 (de)
EC (1) ECSP045304A (de)
ES (1) ES2313045T3 (de)
MX (1) MXPA06001056A (de)
NO (1) NO20061632L (de)
NZ (1) NZ580211A (de)
PA (1) PA8612701A1 (de)
PE (1) PE20050272A1 (de)
PT (1) PT1663913E (de)
RS (1) RS20060181A (de)
UA (1) UA83253C2 (de)
WO (1) WO2005028401A1 (de)
ZA (1) ZA200601486B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006008706A3 (en) * 2004-07-14 2006-03-23 Univ Pretoria An alternate oxidant for a delay composition
US20100000437A1 (en) * 2006-10-27 2010-01-07 Pavel Valenta Detonation tube with improved separability from the processed broken stone
WO2017105571A3 (en) * 2015-09-17 2017-10-26 Meeker Daniel Hill Concealed amalgamated explosive neutralizer and method of manufacture
FR3076830A1 (fr) * 2018-01-17 2019-07-19 Nexter Munitions Composition retard pyrotechnique
EP3659992A4 (de) * 2018-02-21 2020-09-16 Enaex S.A. Metallgemisch-sprengkapsel
US11592269B2 (en) 2015-09-17 2023-02-28 I P Creations Limited Flash directed reactive target and method of manufacture
US12000681B2 (en) 2015-09-17 2024-06-04 I P Creations Limited Biodegradable reactive shooting target and method of manufacture

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100348554C (zh) * 2006-03-31 2007-11-14 谢新佑 一种用于烟花爆竹的复合氧化剂
BR102014024720A2 (pt) * 2014-10-03 2016-05-24 Pari Sa tubo condutor de fagulha térmica com uso de partículas nanométricas
CN104439756B (zh) * 2014-12-29 2016-03-30 湖南天佑科技有限公司 一种无源自滋生高热自动焊接碳钢类金属的膏体及其制备方法与使用方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3745077A (en) * 1972-03-15 1973-07-10 Lockheed Aircraft Corp Thermit composition and method of making
US4757764A (en) * 1985-12-20 1988-07-19 The Ensign-Bickford Company Nonelectric blasting initiation signal control system, method and transmission device therefor
US4923535A (en) * 1982-03-17 1990-05-08 General Technology Applications, Inc. Polymer binding of particulate materials
US5351618A (en) * 1991-09-09 1994-10-04 Imperial Chemical Industries Plc Shock tube initiator
US5773754A (en) * 1996-06-03 1998-06-30 Daicel Chemical Industries, Ltd. Gas generating agent with trihydrazino triazine fuel
US5866842A (en) * 1996-07-18 1999-02-02 Primex Technologies, Inc. Low temperature autoigniting propellant composition

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57140394A (en) 1981-02-20 1982-08-30 Nissan Motor Time delay line
US4522665A (en) * 1984-03-08 1985-06-11 Geo Vann, Inc. Primer mix, percussion primer and method for initiating combustion
GB2242010B (en) * 1990-03-15 1993-10-13 Ici Plc Low energy fuse
GB9017715D0 (en) * 1990-08-13 1990-09-26 Ici Plc Low energy fuse
US5212341A (en) * 1991-08-15 1993-05-18 Osborne Alfred M Co-extruded shock tube
US5827994A (en) * 1996-07-11 1998-10-27 The Ensign-Bickford Company Fissile shock tube and method of making the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3745077A (en) * 1972-03-15 1973-07-10 Lockheed Aircraft Corp Thermit composition and method of making
US4923535A (en) * 1982-03-17 1990-05-08 General Technology Applications, Inc. Polymer binding of particulate materials
US4757764A (en) * 1985-12-20 1988-07-19 The Ensign-Bickford Company Nonelectric blasting initiation signal control system, method and transmission device therefor
US5351618A (en) * 1991-09-09 1994-10-04 Imperial Chemical Industries Plc Shock tube initiator
US5773754A (en) * 1996-06-03 1998-06-30 Daicel Chemical Industries, Ltd. Gas generating agent with trihydrazino triazine fuel
US5866842A (en) * 1996-07-18 1999-02-02 Primex Technologies, Inc. Low temperature autoigniting propellant composition

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006008706A3 (en) * 2004-07-14 2006-03-23 Univ Pretoria An alternate oxidant for a delay composition
US20100000437A1 (en) * 2006-10-27 2010-01-07 Pavel Valenta Detonation tube with improved separability from the processed broken stone
WO2017105571A3 (en) * 2015-09-17 2017-10-26 Meeker Daniel Hill Concealed amalgamated explosive neutralizer and method of manufacture
US10288390B2 (en) 2015-09-17 2019-05-14 I P Creations Limited Concealed amalgamated explosive neutralizer and method of manufacture
US11592269B2 (en) 2015-09-17 2023-02-28 I P Creations Limited Flash directed reactive target and method of manufacture
US12000681B2 (en) 2015-09-17 2024-06-04 I P Creations Limited Biodegradable reactive shooting target and method of manufacture
FR3076830A1 (fr) * 2018-01-17 2019-07-19 Nexter Munitions Composition retard pyrotechnique
EP3514132A1 (de) * 2018-01-17 2019-07-24 Nexter Munitions Pyrotechnische verzögerungszusammensetzung
EP3659992A4 (de) * 2018-02-21 2020-09-16 Enaex S.A. Metallgemisch-sprengkapsel

Also Published As

Publication number Publication date
EP1663913A1 (de) 2006-06-07
AU2004274048A1 (en) 2005-03-31
UA83253C2 (ru) 2008-06-25
PE20050272A1 (es) 2005-04-28
ES2313045T3 (es) 2009-03-01
KR20060035800A (ko) 2006-04-26
WO2005028401A1 (en) 2005-03-31
BR0303546B1 (pt) 2013-01-08
NO20061632L (no) 2006-06-16
AP1838A (en) 2008-04-07
PA8612701A1 (es) 2005-03-28
BR0303546A (pt) 2005-05-10
CN100506758C (zh) 2009-07-01
CO5630033A1 (es) 2006-04-28
BR0303546B8 (pt) 2013-02-19
EA200600583A1 (ru) 2006-08-25
CN1852875A (zh) 2006-10-25
PT1663913E (pt) 2008-12-16
RS20060181A (sr) 2007-12-31
EA009360B1 (ru) 2007-12-28
ATE407105T1 (de) 2008-09-15
AP2006003526A0 (en) 2006-02-28
NZ580211A (en) 2010-12-24
EP1663913B1 (de) 2008-09-03
JP2007505807A (ja) 2007-03-15
KR100848214B1 (ko) 2008-07-24
AR045772A1 (es) 2005-11-09
CA2538734A1 (en) 2005-03-31
ZA200601486B (en) 2007-05-30
ECSP045304A (es) 2004-11-26
AU2004274048B2 (en) 2008-10-23
DE602004016355D1 (de) 2008-10-16
MXPA06001056A (es) 2006-03-17

Similar Documents

Publication Publication Date Title
US3590739A (en) Fuse
CA2240892C (en) Pyrotechnical charge for detonators
AU2004274048B2 (en) Process for production of thermal shock tube, and product thereof
US5166470A (en) Low energy fuse
AU655651B2 (en) Shock tube initiator
CN1025239C (zh) 低能量信管
US9541366B2 (en) Thermal shock tube and the process of production thereof
CA1094390A (en) Explosives initiation assembly and system
JPH06144982A (ja) 火工用遅発組成物
GB1587960A (en) Explosive energy-initiatable blasting caps containing a porous ignition and detonation system and method
EP3222605A1 (de) Wärmefunkenleitende röhre unter verwendung von nanoskaligen partikeln
US5473987A (en) Low energy fuse
JPS61117188A (ja) 電気雷管の起爆方法及びその電気雷管
Zawadzka-Małota et al. Some remarks on the safety of methane penthrite detonating cords against the inflammability of a methane-air mixture
KR790001771B1 (ko) 뇌관 및 기폭 시스템
JPH06263579A (ja) 非電気導火管作動用ミニ雷管
Gesser Explosives
JPS62879B2 (de)

Legal Events

Date Code Title Description
AS Assignment

Owner name: BRITANITE, S/A-INDUSTRIAS QUIMICAS, BRAZIL

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FALQUETE, MARCO ANTONIO;REEL/FRAME:015822/0788

Effective date: 20040915

AS Assignment

Owner name: IBQ INDUSTRIAS QUIMICAS S/A, BRAZIL

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BRITANITE S/A INDUSTRIAS QUIMICAS;REEL/FRAME:029660/0652

Effective date: 20120514

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION