JP2593159B2 - Lid for empty package - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a separate-charged, non-capsule-filled empty package assembly lid, and more particularly, to break when released outside a gun,
The present invention relates to a lid for a non-medical case empty package which becomes a safe debris and scatters.

2. Description of the Related Art A lid for a non-capsule empty packaging seals the combustion gas of the empty packaging medicine and promotes the combustion of the empty packaging medicine by sealing the combustion gas pressure. Further, after the completion of the burning of the packaged medicine, it is discharged outside the gun by the power of the combustion gas.

The lid is made of cork, wood, foam, fiberboard, corrugated cardboard, molded resin, etc., and its structure is applicable to various types of artillery, for example, 155 mm round and 203 mm round, shape and dimensions. In consideration of the above, processed one is used.

[Problems to be Solved by the Invention] Although these lids have a sufficient function of sealing the combustion gas of the empty package medicine, when they are released outside the gun, the lids are not broken, Or, even if it is destroyed, its shards are large, so the scattered distance outside the gun is long, and its use place is restricted in ensuring safety during shooting.

[Means for Solving the Problems] The present invention has been made as a result of various studies for the purpose of providing a lid for a cartridge-free empty packaging in the above-mentioned situation. is there.

That is, the present invention relates to a lid for a cartridge-free empty package, wherein thin plate-like objects having a temporary specific gravity of 0.1 or more and less than 0.33 are laminated so as to be finely crushed when released from the gun.

The laminated product of the thin plate-like material having a temporary specific gravity of less than 0.33 used in the present invention needs to be broken into small pieces when discharged out of the gun.

Laminates made of thin plate-like objects must have a temporary specific gravity of less than 0.33, and if it exceeds 0.33, the gas tightness inside the gun will improve, but it will not break down when released outside the gun and will have a large energy Scatter.

Also, if the temporary specific gravity is less than 0.1, the degree of gas sealing inside the gun deteriorates, the combustion gas pressure of the blank medicine drops, and the blank medicine does not completely burn and scatters outside the gun or produces sound or smoke And less flaming.

On the other hand, if one of the plate-like objects used for lamination is too thick, it is not crushed finely at the time of use, and the scattering distance to the outside of the gun does not become short. Thickness of 20 m / m or less is preferable, and 13 to 16 m / m is easy to use.

Although it can be used even if it is 10 mm or less, the cost for lamination increases, so 13-16 m to keep the scattering distance about 50 m or less
It is preferable to use the thing of m. Further, the thickness of the lid, which is laminated, must be changed depending on the inner diameter of the gun used, and the thickness / inner diameter ratio of the lid is preferably 0.33 or more.

The adhesive used in the present invention may be any as long as a thin plate can be bonded and laminated, but a water-soluble adhesive (vinyl acetate, polyvinyl alcohol, etc.) which is suitable for permeating the plate is easy to use. .

The adhesive is applied to the entire surface of the plate, and when the thickness of the adhesive layer is 1.3 mm or more, the adhesive strength of the plate is improved, and it is easy to process into a prescribed shape, but when released outside the gun, The bonding interface of the plate-like object does not "struck", the adhesive layer does not break into small pieces, and scatters over a long distance with large energy, making it difficult to ensure its safety.

If the thickness of the adhesive layer is less than 0.3 mm, it will become small pieces when released outside the gun, but it may come off from the adhesive interface when processing into a prescribed shape or during normal handling.

Therefore, when applying and laminating an adhesive on the entire surface of the plate-like material, the thickness of the adhesive layer is preferably 0.3 mm or more and less than 1.3 mm, and usually 0.1 mm.
8-1.1 mm is frequently used. In addition, when it is difficult to regulate the thickness of the adhesive layer of the plate-like object due to the shape and surface condition, etc.,
Alternatively, if it is not economical, the purpose can be achieved by laminating and bonding so that the bonding area is 10% or more and less than 60%.
In this case, it is desirable that the adhesive is applied in such a manner that the bonding area of the plate-like material is formed in a dot-like, circular or base-like shape and is dispersed as uniformly as possible.

EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples.

Example 1 Nine pieces of fiberboard having a temporary specific gravity of 0.28 and a thickness of 15 mm, an adhesive (water-soluble polyvinyl alcohol 10%), a brush for application,
One press having a specific gravity of 0.28 and a thickness of 135 mm was prepared for the press and the fiberboard.

Then, as shown in FIG. 1, an adhesive 2 is uniformly applied to the fiber board 1 with a coating brush so that the adhesive layer has a thickness of 1.0 mm over the entire adhesive surface.

This process was repeated eight times to laminate and bond nine fiberboards 1 having a temporary specific gravity of 0.28. Next, the laminated fiberboard is pressed with a press
The pressure was increased to 60 g / cm ² and maintained for 3 hours. Further depressurize and at normal pressure 60
The resultant was placed in a drying chamber at ℃ and dried for 6 hours. Next, in order to perform a shooting test, the lid was cut with a lathe such that the outer diameter of the lid was 207 mm and the thickness was 135 mm.

The result of measurement of the provisional specific gravity was 0.29, and the provisional specific gravity was slightly increased by bonding.

The lid was provided with a string handle 3 as shown in FIG. 1 for easy handling.

Also, an integral fiberboard having a temporary specific gravity of 0.28 was cut by a lathe to an outer diameter of 207 mm as shown in FIG. This was also provided with a string handle 3 as described above.

On the other hand, a silk single base sack containing 50 g of black powder at the bottom and 1300 g of a spherical single base blank with a temporary specific gravity of 0.09
Prepared empty packaged medicine. In order to confirm the situation in which the cap is destroyed outside the gun and the scattering distribution of the fragments, a shooting test was conducted using a test gun as shown in FIG. First, the lid 4 was pushed down to the starting portion of the barrel 5 with a push rod, and then the empty packaging medicine 6 was filled in the medicine chamber. Thereafter, the closing machine 7 is closed and the firing tube 8 is set. The energy is given to the firing tube 8 to burn the empty packaging medicine 6 and the gas is used to discharge the lid 4 outside the gun. This test was performed three times each. As a result, when the cap was ejected from the gun, the former became small pieces with a maximum length of about 18 mm at the same time, and the longest scattering distance of the pieces was 28, 30, and 32 m in front of the muzzle. At this time, no unburned blank medicine was scattered from the inside of the gun, and smoke and flaming were observed.

The latter broke down when ejected from the gun, but the fragments were up to 130 mm in maximum length, and the maximum scatter distance was 75, 43, and 84 m in three tests. The blanks burned completely in the gun.

Example 2 Seven sheets of fiberboard having a temporary specific gravity of 0.28 and a thickness of 15 mm and seven sheets each having a temporary specific gravity of 0.4 and a thickness of 15 mm and an adhesive (water-soluble polyvinyl alcohol-based 5%), a brush for applying the adhesive, and a pressurizing agent The press was prepared.

In the fiberboard, as in Example 1, the adhesive layer was 1.
The adhesive is uniformly applied with a brush to a thickness of 0 mm.

This was repeated six times, and seven fiber boards having a temporary specific gravity of 0.28 were laminated and bonded. Next, the laminated fiber board is 60 g / cm
Pressurized at ² and held for 3 hours. Further depressurize, 60 ℃ at normal pressure
And dried for 6 hours. Next, in order to perform a shooting test, the lid was cut with a lathe so that the outer diameter of the lid was 158 mm and the thickness was 105 mm.

As a result of measuring the provisional specific gravity, it was 0.29. Similarly, a fiber board having a temporary specific gravity of 0.4 was also laminated and bonded, and processed into the same dimensions as above.

On the other hand, an empty package containing 500 g of a spherical single base blank package having a temporary specific gravity of 0.1 was prepared by using 50 g of black powder as an igniter at the bottom of a silk cloth pharmaceutical bag. These were loaded into a test gun in the same manner as in Example 1, and then fired.

In this test, a fiberboard having a temporary specific gravity of 0.28 and 0.4 was laminated and bonded, respectively, and three shots of each processed lid stopper were fired.

As a result, the former stopper was released from the gun and became a small piece with a maximum length of about 20 mm at the same time, and the maximum flying distance of the piece was 30, 35, and 31 m in front of the muzzle. At this time, smoke and flaming were observed without any unburned empty package medicine being scattered from the inside of the gun. The latter was partially destroyed when ejected from the gun, but the fragments had a maximum length of about 110 mm, and the maximum distance of the fragments was 75, 63, and 69 m in front of the muzzle. Unburned blanks were not released outside the gun.

[Effects of the Invention] The lid for a cartridge-free empty package of the present invention is: (1) When released from the artillery, it is broken into small pieces and becomes a safe piece, and the scattered distance is shortened. It is not necessary and can be easily trained in artillery operation.

(2) Since the shape is simple, a low-cost lid can be provided.

And the like.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a lid according to an embodiment of the present invention in which an adhesive is applied to the entire surface of a plate-like material and laminated and adhered. FIG. 2 is a cross-sectional view of an integral lid without laminated adhesion. FIG. 3 is a sectional view showing a state in which a lid and an empty package are loaded in the firing test gun. DESCRIPTION OF SYMBOLS 1 ... Fiber board, 2 ... Adhesive, 3 ... Handle 4, ... Lid stopper, 5 ... Barrel, 6 ... Empty packaging medicine, 7 ... Closer, 8 ...
... fire tube.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroyuki Kodama 2620 Ojiri, Oita City, Oita Prefecture Asahi Kasei Kogyo Co., Ltd. (JP, B1) US Patent 3,705,549 (US, A)

Claims (1)

(57) [Claims] (1) A lid for a cartridge-less empty package, wherein thin plate-like objects having a temporary specific gravity of 0.1 or more and less than 0.33 are laminated so as to be finely crushed when discharged outside the gun.