TWI542856B - A biodegradable bb pellet and method of making the same - Google Patents

Description

Environmentally decomposable BB bomb and its making method

The invention relates to a BB bomb, in particular to an environmentally-friendly decomposable BB bomb and a manufacturing method thereof. The BB bomb can be decomposed by the natural environment after use, and is not easy to cause pollution of the biological environment.

At present, the BB bombs on the market are mainly made of 60% natural stone powder and 40% petrochemical plastic, while the petrochemical plastics are mostly selected from polystyrene (PS) or polypropylene (abbreviated as polypropylene). For PP), it cannot be decomposed in the natural environment. Therefore, individuals or groups engaged in BB air-gun movements may not cause environmental pollution or ingestion of wild birds if they do not clean the BB bombs left in the field after exercise. Hazard, so many BB bomb manufacturers began to develop biodegradable BB bombs, which can solve the problem of petrochemical plastic BB bombs harming the environment.

However, at present, the biodegradable BB bomb is mainly made by converting the petrochemical plastic used in the conventional BB bomb into a biodegradable plastic, and the biodegradable plastic is polylactic acid (abbreviated as polylactic acid). PLA), although polylactic acid is a biodegradable material, it can be decomposed by the natural environment after use, and it is not easy to cause pollution of the biological environment. However, due to the glass transition temperature (Tg) of polylactic acid (PLA) It is 60 ° C, its rigidity is high and the texture is brittle and hard. It is easy to be broken or burst when the BB bomb is shot, which causes injury to the surrounding people. In addition, the heat deflection temperature (HDT) of polylactic acid (PLA) is 58~60°C, its heat resistance is not good. It is easy to be deformed due to excessive temperature during long-distance transportation. It needs to be covered with insulation blanket or freezer, so the transportation process is very inconvenient.

In order to solve the above problems, the present invention provides an environmentally-friendly and decomposable BB bomb and a manufacturing method thereof, which have the characteristics of low temperature resistance and high temperature resistance, are less rigid and less brittle at normal temperature, and are less susceptible to deformation during long-distance transportation.

In order to achieve the above objective, the present invention provides an environmentally-decomposable BB bomb and a manufacturing method thereof, wherein the environmentally-decomposable BB elastic system comprises an organic substance and an inorganic substance, and the organic substance system comprises a main raw material, and the main raw material is polybutan Polybutylene-1,4-succinate (abbreviated as PBS), the inorganic substance is selected from the group consisting of talc, calcium carbonate, barium sulfate, mica powder and zinc powder. The preparation method comprises the steps of mixing the organic substance and the inorganic substance into a mixture, and subjecting the mixture to injection molding, grinding, waxing and polishing.

According to the above, one of the effects of the present invention is that the polystyrene-1,4-butylene glycol ester (PBS) is used as a main raw material of an organic substance, and the PBS can be biodegraded to produce the present invention. The BB bomb can be decomposed in the natural environment, so it is not easy to cause environmental pollution and endanger the health of wild birds.

By the above, the present invention achieves the second effect, since the glass transition temperature (Tg) of polybutylene succinate-1,4-butylene glycol (PBS) is -30 ° C, the BB bomb of the present invention has less rigidity. The material is soft and not easy to be brittle. When the BB bomb is shot, it is not easy to cause a burst to injure the surrounding people. The PBS has a heat distortion temperature (HDT) of up to 90 ° C. Therefore, it will not be deformed due to excessive temperature during long-distance transportation. [Simplified illustration]

1 is a schematic flow chart (1) of the manufacturing method of the present invention. 2 is a schematic flow chart (2) of the manufacturing method of the present invention.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. Please refer to FIG. 1 and FIG. 2 , the environmentally-decomposable BB bomb of the present invention and a manufacturing method thereof, including the following steps:

(a) preparing a mixture 100 by mixing and mixing an organic substance 10 and an inorganic substance 20 through a mixing mixer to prepare a mixture 100, wherein the organic substance 10 is 15% by weight to 51% by weight of the mixture, and the inorganic substance 20 is The organic matter 10 is composed of 70% to 85% by weight of the mixture, wherein the organic matter 10 is composed of one of 70% to 100% by weight of the main raw material and 0% to 30% by weight of the auxiliary material, and the inorganic material 20 is selected from the group consisting of talc powder. a group consisting of calcium carbonate, barium sulfate, mica powder and zinc powder, and the main raw material in the organic matter 10 is selected from polybutylene succinate-1,4-butylene glycol ester (PBS), and the auxiliary material is It comprises polylactic acid (PLA), polybutylene adipate-co-terephthalate (abbreviated as PBAT), a compatibilizer and a coupling agent. The polylactic acid (PLA) in the auxiliary material accounts for 10% to 20% by weight of the organic matter, and the compatibilizer is selected from polyethylene glycol (PEG) and polypropylene glycol (PPG for short). And a group of glycerol (also known as glycerol), and the coupling agent is selected from a monoalkoxy type titanium compound, such as alkoxy-trimethacryloyl-titanic acid (alkoxy) Trimethacryl titanate), isopropyl dimethacryl isostearoyl titanate and isopropyl triisostearoyl titanate.

It is worth mentioning that the mechanical properties of polybutylene succinate-1,4-butylene glycol (PBS) are quite close to linear low-density polyethylene (LLDPE), which is compared with other organisms. Decomposable material, PBS has excellent mechanical properties, and its heat distortion temperature (HDT) can reach about 90 °C. Therefore, PBS is the main raw material of organic matter 10, and the blended mixture 100 has high heat resistance and is not easily deformed. In addition, the glass transition temperature (Tg) of PBS is -30 ° C, so the mixture 100 has low rigidity, soft material and is not brittle.

In addition, by adding polylactic acid (PLA) to the mixture 100, it is helpful to increase the rigidity of the mixture 100, making it easy to grind, and improving the dimensional stability of the final BB at normal temperature, and adding polyhexan Acid/butylene terephthalate (PBAT) can adjust the toughness or flexibility of the product produced by the mixture 100, so that the elasticity of the final BB product is increased, and the addition of a compatibilizer can be increased. PBS, PLA and PBAT are compatible with each other, and inorganic 20 is used to increase the weight of the whole mixture 100. By adding a coupling agent, the dispersion of the inorganic substance 20 can be increased, and the PBS can be more easily combined with the inorganic substance 20.

In the present invention, although only PBS is used as the organic substance 10, and the inorganic substance 20 is sufficient to prepare the mixture 100, better heat resistance can be obtained by using the final BB bomb product made of PBS as the main raw material and PLA. It is rigid and provides better appearance quality. When combined with PBAT, it can increase the toughness of the product, making it more elastic and less brittle.

(b) Injection molding 101, the mixture 100 is placed in an injection molding machine, and the mixture 100 is injected into a BB elastic mold, and the injection temperature is 160 ° C to 190 ° C, whereas the conventional biodegradable BB bomb using PLA as a raw material. The injection temperature is 180 ° C ~ 210 ° C, therefore, the BB bomb of the invention uses PBS as the main raw material, and has the advantages of lower injection temperature, power saving and quick cooling, and is more economical.

(c) Grinding 102, the BB projectile after injection molding 101 is formed into a diameter of 6.03 mm by grinding 102 using a conventional grinding technique. 1% of the BB bombs, and the cooling water used in the process of grinding 102 is 15 ° C ~ 25 ° C.

(d) Waxing 103, the BB bomb after grinding 102 is waxed 103, because the BB bomb of the present invention is soft in material, generally the water-based wax can easily complete the BB bomb waxing 103.

(e) Polishing 104, which is polished 104 by a conventional polishing technique, and is formed into a BB bomb of the present invention having a diameter of 5.95 mm.

The above is the environmentally decomposable BB bomb of the present invention and the manufacturing method thereof, and the BB bomb of the present invention and the conventional PLA-based raw material are compared, and the physical characteristics, advantages and disadvantages are compared as follows:

According to the environmentally-decomposable BB bomb of the present invention and the manufacturing method thereof, the four BB bomb products produced are shown in Table 1, and the product numbers are sequentially MEB-20, MEB-25, MEB-28 and MEB-30. Table 1 is the weight percentage of each of the organic matter 10 and the inorganic matter 20 in the four products.

As shown in Table 2, the physical characteristics of the four BB projectiles produced by the present invention and the PLA plastic BB bombs using PLA as the main raw material of the organic matter 10 are compared.

The BB bomb product MEB-20 of the present invention has a specific gravity of 1.86 g/cm ³ , the MEB-25 specific gravity is 2.26 g/cm ³ , the MEB-28 specific gravity is 2.54 g/cm ³ , and the MEB-30 specific gravity is 2.7 g/cm. ³ , Table 2 is the PLA plastic BB bomb with the same proportion of each product, for comparison of physical and mechanical properties. It can be seen from Table 2 that due to the high rigidity and insufficient toughness of PLA, if a PLA plastic BB bomb with a large specific gravity is to be produced, the organic matter 10 mainly composed of PLA cannot effectively coat the inorganic material 20, so the BB bomb is produced. In the process, granulation cannot be formed. Therefore, PLA plastic BB bombs with a specific gravity as large as 2.7 g/cm ³ cannot be smoothly produced.

Other specific gravity as ^{1.86 g / cm 3, 2.26 g} / cm 3 and 2.54g / cm ³ of the PLA plastic with a BB BB shells of the present invention, shown in the same proportion, the higher the impact resistance BB present invention shells strength, The preferred elasticity can prevent brittle cracking and the user. In addition, the heat distortion temperature (HDT) of the BB bomb of the present invention is high, so the heat resistance is high and the deformation is not easy, and the flow index of the BB bomb of the present invention is added. Larger, it is easier to shoot when the BB projectile 101 is produced. Therefore, the injection temperature can be lower and the cooling is faster. Therefore, the manufacturing process of the BB bomb of the present invention is faster and more economical than the conventional PLA plastic BB bomb.

In summary, the present invention provides an environmentally-friendly decomposable BB bomb and a method for producing the same, which comprises polybutylene succinate-1,4-butylene glycol ester (PBS) as a main raw material of organic matter 10, which can be biodegraded by using PBS. The BB bomb produced by the invention can be decomposed in the natural environment, so it is not easy to cause environmental pollution and endanger the health of wild birds, and the BB bomb of the invention has less rigidity than the PLA plastic BB bomb. The material is soft and not easy to be brittle. Therefore, when the BB bomb is hit, it is not easy to cause a burst to injure the surrounding people, and the BB projectile with a high specific gravity level can be made by using the present invention, and the use of the conventional PLA as the main raw material cannot be smoothly performed.

In addition, the BB bomb of the present invention has a large fluidity, and when the BB projectile 101 is produced, the injection temperature is low and the cooling is fast, and the heat resistance of the BB bomb of the present invention is higher than that of the PLA plastic BB. The temperature is too high to cause deformation, and the long-distance transportation does not need to be covered with a heat insulation blanket or a freezer. Therefore, the BB project of the present invention is faster than the conventional biodegradable PLA plastic BB bomb, and the transportation process is faster. PLA plastic BB is convenient and economical.

The above embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention. Any modifications or variations that are made without departing from the spirit of the invention are intended to be protected.

10‧‧‧Organic
20‧‧‧Inorganic substances
100‧‧‧ mixture
101‧‧‧ Injection molding
102‧‧‧ Grinding
103‧‧‧ Waxing
104‧‧‧ polishing

10‧‧‧Organic

20‧‧‧Inorganic substances

100‧‧‧ mixture

101‧‧‧ Injection molding

102‧‧‧ Grinding

103‧‧‧ Waxing

104‧‧‧ polishing

Claims (11)

An environmentally-decomposable BB bomb comprising: an organic material comprising a main raw material and a raw material, wherein the main raw material is selected from polybutylene succinate-1,4-butylene glycol, the auxiliary raw material The invention comprises polylactic acid and polyadipate/butylene terephthalate; and an inorganic substance, wherein the organic substance accounts for 15% to 51% by weight, the inorganic substance accounts for 49% to 85% by weight, and the main raw material accounts for The organic matter percentage is 70% to 100%, and the auxiliary material accounts for 0% to 30% by weight of the organic matter. The environmentally-decomposable BB cartridge according to claim 1, wherein the auxiliary material further comprises a compatibilizing agent and a coupling agent. The environmentally-decomposable BB bomb according to claim 1, wherein the polylactic acid accounts for 0% to 20% by weight of the organic matter. The environmentally-decomposable BB bomb according to claim 1, wherein the inorganic substance is selected from the group consisting of talc, calcium carbonate, barium sulfate, mica powder and zinc powder. The environmentally-decomposable BB cartridge according to claim 2, wherein the compatibilizing agent is selected from the group consisting of polyethylene glycol, polypropylene glycol and glycerin. The environmentally-decomposable BB bomb according to claim 2, wherein the coupling agent is a titanium-based compound. A method for producing a BB cartridge according to claim 1, wherein the organic substance and the inorganic substance are mixed, and the mixture is injection molded. The method for producing an environmentally-decomposable BB cartridge according to claim 7, wherein the injection molding temperature of the mixture is from 160 to 190 degrees Celsius. The method for producing an environmentally-decomposable BB cartridge according to claim 7, wherein the mixture is ground and polished. The method for producing an environmentally-decomposable BB cartridge according to claim 7, wherein the mixture is waxed. The method for producing an environmentally-decomposable BB cartridge according to claim 9, wherein the temperature of the cooling water required for the mixture is 15 to 25 degrees Celsius.