CN1094510A - Paint ball - Google Patents

Abstract

The present invention provides a paint bomb and a method for manufacturing the same. The paint bomb comprises a spherical paint shell having an inner wall, an outer wall, and an axis of symmetry extending through the shell and forming a first pole and a second pole. The inner wall defines an inner cavity; a dye is contained within the inner cavity. The paint shell has a rupture line extending from an impact point on the outer wall toward the first pole and from the impact point toward the second pole. When a force is applied to the impact point, the rupture line is sufficient to rupture the paint shell, thereby dispersing the dye.

Description

The present invention relates to a brittle projectile, which is usually fired from a compressed air gun, and to a method of making the brittle projectile. More precisely, the invention relates to a projectile structure consisting of a casing which ruptures in a predetermined manner to disperse the pigment contained in the casing.

General solution, police and army training and simulated military maneuvers utilize compressed air guns to shoot projectiles, such as known paint bombs. The purpose of this type of engagement is to "hit" the target, usually the opponent, to "kill" the hostile participant with a paint bomb.

Traditionally, the shell of a paintball consists of a pair of hemispheres made of a gelatinous material, similar to the method commonly used to encapsulate oral medicines such as cold capsules. Typically, these gel-shell paint bombs are soluble in water, as are oral pharmaceuticals. When shooting a target, the function of the paint shot is to break the paint shot so that the dye contained in the paint shot will mark the victim.

Although such gel-cased pellets are commonly referred to as paint bombs, the dye contained in the paint cartridge case does not have to be a paint. In order to ensure that the dye marks left by the paintballs are removed from the clothing and skin of the victim, the dye should have good skin and fabric fading properties. For this purpose, water-soluble vegetable dyes are usually used as coloring agents. To increase the volume of the mark left by the ruptured paintball, the amount of paint is usually increased.

A common problem with known gum shell paintballs is that since vegetable dye colorants are generally water soluble, this water soluble substance will dissolve the gum base shell of the known paintballs. In addition, other components of paintballs, such as smoke or tear gas, are usually severely limited by the properties of the gelatinous shell.

In order to overcome the difficulty of the low water resistance of colloids, usually, common water-soluble dye solutions are mixed in a mixture of 1,2-ethylene glycol and polyethylene glycol in the form of a viscous gel, Or mix in propylene glycol in viscous gel form. Utilization of ethylene glycol is very difficult because it is generally considered to be a toxic substance that should not come into contact with human skin. Although 1,2-ethylene glycol-based dyes have avoided the damage of the paint shell, the known colloid shell paint shells are very easy to damage the external environment, causing unpredictable changes in the external environment. Rain, user sweating, and even high humidity often alternate and can even damage the gel shell of the paintball, making the paintball inaccurate or in many cases unusable.

Further, although the use of 1,2-ethylene glycol gel can suppress the dissolution inside the paint cartridge case, there are many other problems in paint cartridges using 1,2-ethylene glycol. One of the biggest problems is the flexibility of the colloidal shell compounded with viscous 1,2-ethylene glycol. When the known paintball hits the victim, the gelatinous shell bends and elongates undesirably before breaking. In particular, the position of the tip of the paintball slightly bends when it comes into contact with the target. As the projectile continues to hit the target and ruptures, much of the viscous ethylene glycol and dye mixture migrates to the rear end of the still-set colloidal shell. The severed anterior edge of the posterior hemisphere will enter the target as the posterior end of the gelatinous shell containing the viscous dye mixture, still intact, continues to shoot onto the target. When the target is a human, the severed edges usually leave marks of cuts, wounds, or raised skins on the victim's skin.

Known paintballs also suffer from inaccuracy, especially when fired at a distance from the target. This type of paint bomb is slightly out of round due to its own difficulty in manufacturing. Even when precision manufacturing equipment is used, the out-of-round error of the known colloidal shell paint bomb is still at least 0.015 ". Even this seemingly small and long Oval paintballs made accurate shooting impossible.

In addition, this out-of-roundness affects the handling of paint shots when using an autoloader to rapidly reload a shooting compressed air gun. Furthermore, it is difficult to achieve a very detailed seam where the two gel shell halves of the gel paintball join. Due to the precise performance and the inability to be exposed to water, such unrefined seams are difficult to exclude, such as this. Further increased the inaccuracy when firing gel shell paintballs.

Furthermore, the gel-shelled paintball has sufficient specific gravity to match the effective firing power of the compressed air gun, so as to achieve the shooting distance for many military maneuvers.

Lastly, the production process of making gum shell paintballs is very time consuming. The entire process from shell formation to the finished product ready for delivery typically takes 4 days. Such long preparations are also often associated with a high reject rate for paintballs.

The general object of the present invention is to overcome the disadvantages of the prior art and to provide an improved paintball. An object of the present invention is to provide a paint bomb, which can reduce the risk of cutting, wounding and turning up the skin when the paint bomb touches the human skin.

Another object of the present invention is to provide a paint cartridge case that is impervious to water and unaffected by moisture.

Another object of the present invention is to provide a paint cartridge which can hold various components.

Another object of the present invention is to provide a paint shot that can be used for long-range shooting with an existing compressed air gun.

A final object of the present invention is to provide a method of manufacturing paintballs which is less time consuming, more convenient and less expensive.

The above objects and other objects and advantages of the present invention will be better understood by those skilled in the art from the following description and appended claims.

The present invention provides a paint bomb, which includes a paint bomb case. The casing is impervious to water and breaks easily on contact with the victim, greatly reducing the risk of bodily injury to the victim.

Structurally, the spherical paint cartridges of the present invention generally have an axis of symmetry forming a first pole and a second pole within the cartridge. The axis of symmetry is substantially perpendicular to a plane passing through the shell, eg a plane that may form the equator. The paint cartridge case forms a cavity that holds the dye. The structure of the paint cartridge is designed in such a way that when the action D is applied to any impact point on the paint cartridge, the paint cartridge can be sufficiently ruptured, and the cartridge ruptures in a certain form, which is a group from the impact point toward the first polar direction and a rupture line extending in the direction of the plane and in the direction of the second pole. In this way, the risk of paintball damage or injury is substantially reduced.

The paint cartridges of the present invention are preferably made of a thermoplastic linear polymer such as polystyrene. The molecules of the linear polymer are preferably oriented along a circumferential line extending from the first pole toward the equator, and along a circumferential line extending from the second pole towards the equator. The wall thickness of the paint cartridges of the present invention is about 0.005 to 0.040 inches, preferably about 0.008 to 0.015 inches. The pigment shell of the present invention can be made by blending linear high polymer and environment-degradable additives. Available degradable additives include photodegradable additives, and the mixing ratio of photodegradable additives and linear high polymers is: the weight of linear high polymers accounts for about 75%, and the weight of photodegradable additives accounts for about 25%.

According to the present invention, there is also provided a method for manufacturing a paint cartridge case, which includes the following steps: first, injecting a molding linear high polymer into a first mold to form a first apex region and a first edge. part. The first part is molded such that the molecules of the linear polymer are oriented along a circumferential line extending from the first pole to the edge of the first part. In the next step, a linear polymer is injected into a second mold and molded to form the second part. The second portion includes a second apex region and a second edge. As with the first part, the second part is molded such that the molecules of the linear polymer are oriented along a circumferential line extending from the second pole to the second edge of the second part. Then, in a next step, the first part and the second part are joined together to form the paint cartridge case.

Thereafter, the dye is charged into the paint cartridge via the filling port located in the first apex region. Subsequently, the filling port is sealed. In a final step, any molding flash produced during joining of the first and second parts and during closing of the mouth is removed to form the paintballs of the present invention.

Figure 1 is a view of a paintball according to one embodiment of the present invention.

Figure 2 is a cross-sectional view of a pigmented cartridge case with parts of the cartridge case joined together by ultrasonic welding.

Figure 3 is an exploded cross-sectional view of the mating parts of the paint cartridge case when the parts are joined together by ultrasonic welding.

Figure 4 is a cross-sectional view of a pigmented cartridge case when the parts of the cartridge case are joined together by solvent welding.

Figure 5 is an exploded cross-sectional view of the mating parts of a pigmented cartridge case when the cartridge case parts are joined together by solvent welding.

Figure 6 is a cross-sectional view of a paint cartridge case filled with dye.

Figure 7a is a view of the arrangement viewed from the first pole and from the point of impact crack structure with increasing impact force acting on the paintball of the present invention. Fig. 7b is an arrangement view of the crack shapes of the paint cartridge case of Fig. 7a when viewed from the opposite pole of the impact point, and Fig. 7c is a view of the distribution of crack shapes of the paint bomb when the impact points of Fig. 7a and 7b are at the north pole of the view.

With reference to the above-mentioned accompanying drawings, the same parts are represented by the same serial numbers. Generally speaking, a novel spherical paint bomb 1, a novel paint bomb shell 3, a novel manufacture of this new paint bomb 1 are disclosed by these accompanying drawings. The method and the method for making this new pigment cartridge case 3. By the following study of the breakage patterns of known colloidal paintballs, it has been found that the breakage patterns of the paint cartridge cases can be controlled and, as a result, improved, thus reducing the risk of injuring the victim when the paint cartridge case hits the victim. Further, the structures of the paint cartridge case 3 and the paint cartridge case 1 improved by utilizing some other features of the cartridge case surpass the known paint cartridge case and the known paint cartridge.

Figure 1 shows a paintball which generally comprises a spherical, hollow paint cartridge case 3 formed of a pair of mutually dependent hemispherical parts 11 and 13 . The axis 4 extends through the paintball and forms a first pole 5 and a second pole 7 . When the hemispherical parts 11 and 13 are joined together, their edges form the equator 9 . As can be clearly seen in Fig. 2, the paint cartridge case 3 comprises an outer wall 8 and an inner wall 10, and when the two hemispherical parts are connected to each other, the inner wall 10 forms an inner cavity. According to the invention, the paint cartridge case 3 is responsive to an impact force applied at any point on the cartridge case, which is sufficient to rupture the paint cartridge case. The paint cartridge 3 ruptures along the rupture line 41 (Fig. 7a-c). The rupture lines are generally linear and radial around the circumference from the point of impact 19 to the nearest polar and equatorial directions. The rupture line also extends through the most distal pole. This arrangement greatly reduces the chance of injuring the victim when the paint bomb 1 hits the victim.

When a force sufficient to rupture the paintball is applied to the impact point 19 on the first hemisphere 11 , the rupture line 14 generally extends circumferentially from the impact point 19 in the direction of the first pole 5 and the equator 9 . If the force is sufficiently great, the rupture line 41 runs past the equator 9 in a direction possibly past the second pole 7 . Similarly, when the point of impact is in the second hemisphere 13 , the rupture line generally extends circumferentially from the point of impact 19 in the direction of and through the second pole 7 , and onwards in the direction of the equator 9 . Furthermore, the rupture line runs in the direction of the equator 9 and through the equator 9 and also in the direction of the first pole 5 and possibly through the first pole 5 .

。The paint cartridges of the present invention are preferably made from linear polymers, eg, thermoplastic linear polymers. The thermoplastic linear polymer is preferably a brittle linear polymer such as polystyrene, which is an easily moldable, commercially available, relatively inexpensive polymer. A suitable polystyrene for use with the present invention is Polystar® manufactured by Rexene Corp Drition.

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It can be easily seen from the structure that the paint shell 3 made of linear high polymer has many advantages. First, the polymer shell 3 is impervious to water, so it will not dissolve when it comes in contact with rain or sweat, or is left in a warm and humid environment. This water impermeability allows the cartridge case to be used to contain a variety of products such as water based paints and dyes, smoke, tear gas and other substances not suitable for containment in known gel cartridge cases.

Furthermore, the linear polymer is easily processed and molded into more perfectly rounded paint cartridge cases 3 compared to known gelatinous paint cartridge cases. Therefore, the construction of the paint cartridge 3 can be made to have an out-of-round error of less than 0.002 inches. In this way, using linear polymers, it is possible to quickly load and fire bullets, and to obtain long-range shooting with good bursting properties. The paint bomb formed by the paint bomb shell 3 made of linear polymer can make the dye contained in the paint bomb 1 diffuse better than the dye diffused from the known colloid shell paint bomb.

The paint cartridge case 3 of the present invention made of a linear polymer, such as polystyrene, exhibits desirable rupturability when its wall thickness is about 0.005 to 0.040 inches. Even wall thickness can be controlled to an optimum range of about 0.008 to 0.015 inches.

In order to reduce the impact on the environment of the fragments of paint shells falling on the ground during simulated military exercises, the linear high polymer used to form the paint shell 3 can be blended with an environmental degradation additive. After the environmental degradation additive and the linear polymer are blended, the larger paint cartridge case 3 fragments will be degraded into polystyrene granules, and like this, it is much better than the paint cartridge case 3 left on the ground to leave large plastic pieces.

。线形高聚物和降解添加剂的各种混合物都适于本发明。其中一种混合物是按照下述方式配制的，线形高聚物的重量约占75%，最好用聚苯乙烯，可光降解添加剂重量约占25%，最好选用Ecolyte 。More suitable environmental degradation additives include photodegradable additives and biodegradable additives. A suitable photodegradable composition to achieve the desired results is Ecolyte® formulated by Ecolyte Corporation.

. Various mixtures of linear polymers and degradation additives are suitable for the present invention. One of the mixtures is formulated as follows, the linear polymer is about 75% by weight, preferably polystyrene, and the photodegradable additive is about 25% by weight, preferably Ecolyte .

Referring to FIGS. 2-5 , the paint cartridge case 3 of the present invention can be composed of a first part 15 and a second part 17 . Each of the first portion 15 and the second portion 17 preferably forms a hemisphere 11 and 13 respectively constituting the paint cartridge case 3 . If the structure of the first part 15 and the second part 17 is the half-spherical shell of the paint cartridge, like this, the rupture performance will be improved to the greatest extent.

The structure of the first part 15 is designed in such a way that an apex zone 5 (same as the first pole 5), a plane A along the edge 27, a first inner wall and a first outer wall are formed in this part, and said edge 27 is located at the second Part 15 at the largest diameter. The structure of the second part 17 is the same, that is, it has an edge 23 formed along the largest diameter of the second part 17, an apex region 7 (same as the second pole 7), a second inner wall and a second outer wall.

The paint cartridge case 3 of the present invention is formed by a first part 15 and a second part 17, and when the paint cartridge case 3 hits a target, the paint cartridge case 3 easily expands the rupture line 14 in the paint cartridge case parts 15 and 17, the rupture line 14 being usually The ground extends radially from the point of impact 19 in the direction of the nearest pole and the nearest edge, and extends circumferentially through the nearest pole and sometimes also through the furthest pole.

When the first portion 15 and the second portion 17 are each a hemisphere constituting the paint cartridge 3 , the first edge 23 and the second edge 27 constitute the equator 9 of the paint cartridge 3 . According to the present invention, when a paintball is used to hit a target, the force of the impact point 19 on one of the hemispheres will generally cause the rupture line 41 to start from the impact point 19, move towards the nearest direction and pass through the nearest pole, and continue along the direction of the equator 9. The circumference is linear and radial. Such rupture lines 41 likewise radiate circumferentially in the direction of and through the equator 9 and possibly in the direction of and through the most distal pole.

The rupture line 41 completely breaks the paint bomb 1 when it hits the target, greatly reducing the possibility of injuring the victim when the projectile hits the victim. According to the present invention, the puncture damage caused by the still intact colloidal pigment shell hemispherical shell is greatly reduced after the main hemispherical shell is broken, and the damage of bruise is also significantly reduced.

Further, a filling port 35 may be provided on the first part 15 or the second part 17 , through which suitable fillers, such as dyes, are filled into the paint cartridge case 3 .

The paint cartridge portions 15, 17 are formed from linear polymers, thus overcoming many of the disadvantages of known gum paint cartridges. The linear polymer is preferably a brittle linear polymer such as polystyrene.

When the pigment shell parts 15, 17 of the present invention are made of a linear high polymer with the following characteristics, its fracture form has been greatly improved. The circumferential lines extending in the direction of the first edge 27 of the part 15 are aligned, and the circumferential lines extending in the direction of the second edge along the second apex region 7 are also aligned.

The paint casing 3 of the present invention made of a linear high polymer, such as polystyrene, has ideal bursting properties when its wall thickness is made to be about 0.005 to 0.040 inches. Preferably, the wall thickness is also controllable to a preferred range of about 0.008 to 0.015 inches.

。另一方面，线形高聚物和降解添加剂的各种混合物都适于本发明。其中一种混合物的作用特别好，该混合物是重量约占75%的线形高聚物和重量约占25%的可光降解添加剂的混合物，而线形高聚物最好选聚苯乙烯，可光降解添加剂最好选用Ecolyte 。As mentioned above, the linear polymer used to manufacture the paint cartridge 3 can be blended with environmental degradation additives, for example, photodegradable additives and biodegradable additives. A suitable photodegradable additive is Ecolyte®, formulated by Ecolyte Corporation.

. On the other hand, various mixtures of linear polymers and degradation additives are suitable for the present invention. One of the mixtures works particularly well. This mixture is a mixture of about 75% by weight of a linear polymer and about 25% by weight of a photodegradable additive. The linear polymer is preferably polystyrene, which can be photodegradable Degradation additive is best to choose Ecolyte .

Referring to Fig. 6, the paint bomb 1 of the present invention is made up of the paint bomb case 3 with the first part 15 and the second part 17 and the suitable dyestuff that packs into the paint bomb case 3 cavity, and the cavity of the paint bomb case 3 is connected together The inner walls of the first part and the second part 17 are formed. Among others, a suitable dye is a water-soluble dye that is dispersible in water. When the paintball 1 of the present invention is shot on the victim, the dye can be easily washed off the victim's clothing or skin.

In addition, the dye contained in the paintball 1 may contain fine dispersible weighting agents. Suitable weighting agents include finely divided calcium carbonate and finely divided barium sulfate. These finely divided weighting agents are suspended in the dye and do not cause any sloshing of the fired paintballs. Paintball structures utilizing this weighting agent can be designed to the size of standard paintballs and can achieve long range. Likewise, smaller paintballs formed using smaller structural materials can be constructed with weighting agents, compared to larger paintballs provided with weighting agents. The same range can be obtained. Paintballs made with weighted agents have an increased range, although such increased density paintballs may increase the likelihood of injury to those shot.

Finally, the paint cartridge case 3 of the present invention can also be filled with other suitable ingredients, for example, the tear gas used in paint shot guns.

In another embodiment of the invention, the inside of the paint cartridge case is engraved with a set of grooves. Preferably 8 grooves are formed. Among these grooves, four grooves are spaced apart from each other by 90° and arranged in a linear radial pattern substantially along the circumference from the first pole 5 to the equator 9 . The remaining 4 slots are arranged radially along the circumference from the second pole to the equator 9 and are spaced 90° apart.

The spherical paint cartridge case 3 made of linear polymer can be formed by a number of methods including injection molding and blow molding. However, the molding method of the pigment cartridge case 3 of the present invention is preferably the injection molding method of a linear thermoplastic polymer. In injection molding, thermoplastic polymers are heated and injected into a mold under high pressure. Utilizing the injection molding method, the walls of the spherical pigment cartridge case are relatively thin and uniform.

Generally, for injection molded spherical paint cartridge cases 3, it is easy to form a spherical shell consisting of a first part 15 and a second part 17, the first part 15 forming the first apex region 5, along the first part 15 largest diameter The plane A of the edge 27, the first inner wall and the first outer wall, the second part 17, which forms the second edge 23 along the largest diameter of the second part 17, the second apex area 7, the second inner wall and the second outer wall. The first part 15 and the second part 17. It is desirable to mold the filling port 35 on the first part 15 . After the first and second parts 15 , 17 have been injection molded, they are joined together to form the complete paint cartridge case 3 .

For spherical paint cartridges, the first portion 15 and the second portion 17 are preferably hemispherical. Molding the first part 15 and the second part 17 into a hemispherical shape shortens the length of the rupture line 41 produced by the first part 15 and the second part 17 upon impact with the victim, as a result, an optimal rupture of the paint cartridge case 3 is obtained performance. In addition, the hemispherical configuration of the first part 15 and the second part 17 improves the processing of the first part and the second part during molding and forming.

It has long been known in plastics technology that care must be taken when making thin-walled items from linear polymers, as the items produced are prone to breakage. This tendency to fracture is exacerbated when using brittle linear polymers such as polystyrene. Studies have shown that when linear polymers are rapidly injected into cold, thin-walled molds, molded items often lack sufficient strength, and the technique warns against molding such items.

However, rapid and complete rupture is a desirable characteristic for a paint cartridge 3 when hitting a target. The present invention finds that when a linear high polymer, particularly a brittle linear high polymer, such as polystyrene, is injected into a thin-walled mold to form the first part 15 and the second part 17 of the paint cartridge case, the paint cartridge case almost The paint shell 3 formed by the parts 15, 17 exhibits rapid and complete rupture performance when hitting the target.

This bursting behavior results from the alignment of the linear polymer molecules obtained during molding of the pigment casing parts 15,17. At the apex areas 5 and 7 of the paint cartridge parts 15 and 17, the linear polymer is injected into the mold, and the linear polymer is pushed through the mold to the outer edge of the paint cartridge part. This process is called center casting, so that the linear polymer The polymer molecules are aligned circumferentially along a line extending from the apex regions 5, 7 of the paint cartridge parts 15, 17 to the outer edges of the paint cartridge parts.

Injecting the plastic solution into a cooler mold further improves the orientation of the resulting molecules. When the pigmented cartridge casing portion of the present invention is molded from a linear polymer, it is preferred that the injection temperature be taken at about 450°F and the mold be maintained at a temperature of about 70°F to 80°F.

The first part 15 of the paint cartridge case 3 is preferably molded into a half-spherical shell of the paint cartridge case 3 during the molding process and has a filling opening 35 and a first edge 27, the filling port 35 being preferably the apex region 5 of the first part 15 form. The filling port 35 extends outwardly from the volcano shape of the first part 15 .

Referring to FIGS. 3 and 5 , when the first part 15 and the second part 17 are joined together by solvent welding, the first edge 27 of the first part 15 formed should be a first square plane 29 . When the first part 15 and the second part 17 are connected together by ultrasonic welding, the first edge 27 of the first part is formed as a bevel 31 .

During the injection molding of the second part 17 of the paint cartridge 3, the second part 17 is preferably also molded into the other spherical half of the paint cartridge. As can be seen from Fig. 3 and Fig. 5, no matter when the second part 17 is welded by solvent or by ultrasonic welding and connected with the first part 15, the second edge 23 of the molded second part is a stepped surface, the The stepped face includes a second square plan 30 and an elongated beveled edge 25 .

Then, the first part 15 and the second part 17 are joined together to form the paint cartridge 3 . When solvent welding is used to join the first part 15 and the second part 17 together, the suitable welding solvent used should be able to be on the first edge 27 and the second edge 23 . The first edge 27 rests on the second edge 23 such that the first square surface 29 fits the second square surface 30 and the extended beveled edge 25 fits closely with the interior of the first part 15 .

When the first part 15 is connected to the second part 17 by ultrasonic welding, the first edge 27 is placed on the second edge 23, so that the inclined surface 31 cooperates with the second square plane 30, and the extended inclined edge 25 is connected to the first part. The interior of the 15 fits closely together. Then, the combined first and second parts are welded on an ultrasonic welding horn. Such an ultrasonically welded corner preferably surrounds one of the first portion 15 and the second portion 17, the first edge 27 and the second edge 23 or a certain ratio of the remainder. It is obvious to a person skilled in the art that the shapes of the edges 23 and 27 and the end faces can be interchanged.

Optimally, when the first portion 15 and the second portion 17 are joined together, the resulting paint cartridge 3 is out of round by less than 0.002 inches. In addition, the thickness between the inner and outer walls of the first portion 15, the second portion 17 and the resulting paint cartridge case 3 is preferably in the range of about 0.005 to 0.040 inches. The wall thickness can also be controlled within a preferred range of about 0.008 to 0.015 inches.

，并且掺和在一起的混合物应是，重量约占75%的聚苯乙烯和重量约占25%的Ecolyte混合物，这种混合物的效果特别好。In addition, in order to reduce the environmental impact of the paint shell fragments falling on the ground when simulating military exercises, among the linear high polymers used to make the first part 15 and the second part 17, such as the best polystyrene, the best It is good to blend environmentally degradable additives, for example, photodegradable additives and biodegradable additives. A suitable photodegradable additive should be Ecolyte® formulated by Ecolyte Corporation.

, and blended together should be a mixture of about 75% by weight polystyrene and about 25% by weight of Ecolyte, which works particularly well.

Referring to Fig. 6, the paint bomb 1 of the present invention is prepared in this way, an injection needle 37 is inserted in the filling port 35, and dyes, such as water-soluble vegetable dyes, are injected into the paint cartridge case. After withdrawing the injection needle 37, a hot needle is placed on the filling port 35, so that the paint cartridge case 3 is sealed, and the sealing effect is best when the thickness of the seal is substantially equal to that of the paint cartridge case 3. The filled and sealed shot, which may have some molding flash left during the connection of the first part 15 and the second part 17 and the sealing of the filling opening 35, is finally removed.

Although the present invention has only described some embodiments, those skilled in the art can easily make various alternative and modified embodiments without departing from the spirit of the present invention and without exceeding the protection scope of the present invention. .

Claims (34)

1. A paint cartridge case, comprising a spherical cartridge case member, said spherical cartridge case member comprising an inner wall, an outer wall and an axis of symmetry extending through said cartridge case member and forming a first pole and a second pole, when a bursting force is applied When at the point of impact on the outer wall, the case member ruptures according to a predetermined pattern of rupture lines starting from the point of impact and extending in the direction of the first pole, the rupture line is extending from the point of impact in the direction of the second pole. 2. The paint cartridge according to claim 1, wherein said cartridge case member is made of linear high polymer. 3. The paint cartridge according to claim 2, wherein said linear polymer is styrene. 4. The paint cartridge of claim 2, wherein the molecules of said linear polymer are oriented along a circumferential line extending from said first pole toward said second pole. 5. The paint cartridge of claim 2, wherein said linear polymer is blended with an environmentally degradable additive. 6. The paint cartridge of claim 5, wherein said degradation additive is a photodegradable additive. 7. The pigment cartridge according to claim 6, wherein the blending ratio of the linear polymer and the photodegradable additive is such that the weight of the linear polymer accounts for about 75%, and the weight of the photodegradable additive accounts for about 75%. 8. The paint cartridge of claim 1, wherein the paint cartridge member has a thickness between the inner and outer walls of about 0.005 to 0.040 inches. 9. The paint cartridge of claim 8, wherein the paint cartridge member has a thickness between the inner and outer walls of about 0.008 to 0.015 inches. 10. The paint cartridge according to claim 1, wherein a set of grooves are engraved on said inner wall, each groove being 90° apart and radially circumferentially from said first pole to said second pole. 11. A paint bomb, comprising: (a), a spherical paint cartridge, said paint cartridge having an inner wall, an outer wall, and an axis of symmetry extending through said cartridge and forming a first pole and a second pole, said inner wall forming a lumen; (b) containing a dye in said lumen; The paint cartridge case has a rupture line extending from the impact point on the outer wall towards the first pole and from the impact point towards the second pole, and the impact point is applied to the impact point. A force sufficient to rupture the paint cartridge along the rupture line and thereby disperse the dye. 12. The paint cartridge according to claim 11, wherein said paint cartridge is made of a linear polymer. 13. The paintball of claim 12, wherein said linear polymer is polystyrene. 14. The paintball of claim 12, wherein molecules of said linear polymer are oriented along a circumferential line extending from said first pole toward said second pole. 15. The paintball of claim 12, wherein said linear polymer is blended with an environmentally degradable additive. 16. The paintball of claim 15, wherein said degradable additive is a photodegradable additive. 17. The paintball of claim 16, wherein said linear polymer and said photodegradable additive are in the order of about 75% by weight linear polymer and about 25% by weight photodegradable Additives are blended together in proportion. 18. The paint bomb of claim 11, wherein the paint cartridge casing has a thickness between the inner and outer walls of about 0.005 to 0.040 inches. 19. The paint bomb of claim 18, wherein the paint cartridge casing has a thickness between an inner wall and an outer wall of about 0.008 to 0.015 inches. 20. The paintball of claim 11, wherein said inner wall is inscribed with a plurality of grooves, each of said grooves being 90° apart and extending from said first pole to said second pole. The pole is radially circular. 21. The paintball of claim 11, wherein said dye comprises a water soluble and dispersible dye in water. 22. A paintball according to claim 21, wherein said dyestuff includes a finely divided weighting agent. 23. The paintball of claim 22 wherein said finely divided weighting agent is a finely divided calcium carbonate. 24. The paintball of claim 22 wherein said finely divided weighting agent is a finely divided barium sulfate. 25. A paintball comprising: (a) A spherical paint cartridge having an inner wall, an outer wall, and an axis of symmetry extending through said cartridge forming a first pole and a second pole, said inner wall forming a cavity. (b) containing an eye irritant within said lumen; The paint cartridge case has a rupture line extending from the impact point on the outer wall toward the first pole and from the impact point toward the second pole. A force sufficient to fracture said paint cartridge along said rupture line and disperse said eye irritant is applied. 26. A paint cartridge case comprising a first hemispherical portion formed by a first edge and terminating at a first apex region, and a second hemispherical portion comprising a first inner wall and a first outer wall , said second hemispherical portion is formed by a second edge and terminates at a second apex region, and further includes a second inner wall and a second outer wall, said first portion and said second portion at said first An edge is connected to the second edge, and the paint cartridge casing has a direction from the impact point on the outer wall to the first pole and a direction from the impact point to the second pole The extended rupture line is sufficient to rupture said paint cartridge case when a force is applied to the point of impact. 27. A paintball comprising: (a) a first hemispherical portion comprising a first edge and terminating at a first apex region and having a first inner wall and a first outer wall, said first portion being composed of a linear high poly made of a material, the molecules of said linear polymer are oriented in said first portion along a circumferential line extending from said first apex region to said first edge; (b) a second hemispherical portion including a second edge and terminating at a second apex region and including a second inner wall and a second outer wall, said second portion being defined by a linear height polymer, the molecules of said linear polymer are oriented in the second portion along a circumferential line extending from said second apex region to said second edge; (c) said first and second portions have a thickness between said first inner wall and said first outer wall, said thickness ranging from about 0.008 to 0.015 inches. (d), the first and second edges are connected together to form the paint cartridge case, and the paint cartridge case has a cavity; (e) a dye housed within said cavity; The paint cartridge case has a rupture line extending from the impact point on the outer wall toward the first apex area and from the impact point toward the second apex area, when a force is applied to the impact point , enough to rupture the paint cartridge case. 28. A method of making a generally spherical paint cartridge case comprising: (a), injecting a linear polymer into the first mold; (b), forming a first hemispherical portion having a first edge, a first apex region, a first inner wall, and a first outer wall, so that the molecules of the linear polymer in the first portion extend from the first apex region aligned to a circumferential line extending from said first edge; (c), injecting a linear polymer into the second mold, (d), forming a second hemispherical portion having a second edge, a second apex region, a second inner wall, and a second outer wall, so that the molecules of the linear polymer are in the second portion along the said second apex region is oriented along a circumferential line extending from said second edge; and (e) joining said first portion and said second portion together along said first edge. 29. The method of claim 28, wherein said linear polymer is injected into said first mold at said first apex region and said linear polymer is injected at said second apex region Inject into the second mold. 30. The method of claim 28, wherein said first edge comprises a square planar surface, said second edge comprises a stepped surface, said stepped surface comprises a second square planar surface and an elongated beveled edge , when the first part and the second part are connected together, the first square plane fits with the second square plane, and the extended inclined edge closely fits with the first inner wall. 31. The method of claim 30, wherein the first hemispherical portion and the second hemispherical portion of the paint cartridge are joined together by solvent welding. 32. The method of claim 28, wherein said first edge comprises a bevel, said second edge comprises a stepped surface, said stepped surface comprises a second square plan and an elongated slope For the edge, when the first part and the second part are connected together, the inclined surface cooperates with the second square plane, and the extended inclined surface closely cooperates with the first inner wall. 33. The method of claim 32 wherein said first hemispherical portion and said second hemispherical portion of said paint cartridge are joined together by ultrasonic welding. 34. A method of making spherical paintballs, comprising: (a) injecting a linear polymer into the first mold; (b) forming a first hemispherical portion having a first edge, a first apex region, a first inner wall and a first outer wall, and a filling port such that molecules of said linear polymer flow in said first portion along an alignment of circumferential lines extending from said first apex region to a first edge; (c) injecting a linear polymer into the second mold; (d), forming a second hemispherical portion having a second edge, a second apex region, a second inner wall, and a second outer wall, so that the molecules of the linear polymer in the second portion along the said second apex zone is oriented to a circumferential line extending from the second edge; (e) connecting said first part and said second part together along said first and second edges to form a paint cartridge case; (f), dispensing a dye into the paint cartridge case through the filling port; (g) sealing said filling port; (h) removing any flash remaining during joining of said first and second parts, removing any flash remaining during sealing of said sealing opening.

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