JPH0575174U - Volatile solid fuel packaging - Google Patents

Abstract

(57) [Summary] [Structure] The packaged solid fuel 30 is packaged in a sealed state in the packaging bag portion 2 made of a flexible film material. The wrapping body 1 is constructed by providing fine perforations 7 at the central position of the upper surface of the wrapping bag 2. [Effect] By providing the perforations 7, expansion of the packaging bag portion 2 can be avoided, and therefore the packaging body 1 is suitable for long-term storage without any trouble in its handling. Further, the provision of the perforations 7 only slightly increases the amount of the volatile component of the packaged solid fuel 30 that is reduced, and does not impair the effectiveness of the solid fuel even when it is stored for a long period of time. Further, in this case, it is possible to secure the safety against the outflow of the volatile gas. Further, since the wrapping bag portion is made of a film material, it is possible to expedite the packaging work and the like, and it is possible to handle it economically.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improved structure of a package that collectively stores one or more volatile solid fuels.

[0002]

[Prior art and its problems]

 Conventionally, volatile solid fuels such as solid fuels in which alcohol is contained in a soap base material are subdivided into convenient ones for convenient use, and one or more of them are collectively stored or transported. In order to be suitable for this purpose, a structure in which it is housed in a can made of robust tin has been adopted. This is stored in a can and sealed to prevent the volatile main fuel component from being volatilized and disappeared to such an extent that the volatile main fuel component quantitatively impairs its effectiveness as a fuel. This is because it is possible to prevent the volatile gas from flowing out to the outside in a concentration state exceeding the dangerous limit.

However, since this container is no longer needed after it has been used, its subsequent treatment has been a particular problem. Therefore, in recent years, in place of the above-mentioned storage in cans, it is easy to dispose of them by incineration, etc., and the packaging work is easy, and the handling such as storage and transportation is easy. From the standpoint of economic efficiency, a method has been adopted in which a large amount of volatile solid fuel is collectively sealed and packed with a synthetic resin film. This also includes means for fixedly (for example, vacuum-packing) hermetically sealing the solid fuel with a resin film material.

At the same time, a simple means for packaging the volatile solid fuel itself, which has been subdivided into, for example, 15 g to 30 g, has been developed. An example of this conventional configuration is shown in FIG. The illustrated packaged solid fuel 30 is obtained by shrink-bonding a resin film 32 on the surface of a solid fuel material 31 that has been subdivided, and sealing the metal fuel material 35. It will be done.

[0005]

[Problems to be solved by the device]

 As for the packaged solid fuel 30 mentioned above, it is necessary to quickly process a large number of individual packages by shrinking, so the package 32 has a simple sealing structure using a resin film material with a thickness of about 12μ. Therefore, it is recognized that a large amount of volatile gas is still flowing out of the solid fuel material 31 not only from the sealing portions 33 and 34 but also from the resin film material itself.

Therefore, when one or more of the packaged solid fuels 30 are hermetically packaged by a flexible film material such as a resin film material, as shown in FIG. With the passage of time, the packaging bag 37 is filled with the volatilized gas 41 generated from each of the packaged solid fuels 30, and the packaging bag 37 is greatly expanded. Such swelling causes damage to the package 36, and the package becomes bulky, which causes inconvenience in handling. This point is the same as in the case of the vacuum pack described above. Even in the case of hermetic packaging with various resin laminate materials with high gas barrier properties, it is virtually unavoidable that the volatilized gas from the stored solid fuel permeates the film material surface and flows out. .. However, even if this volatilized gas flows out, the expansion phenomenon described above still occurs.

Regarding the above-mentioned package 36, as shown in FIG. 8, a plurality of packages 36 are further housed and held in the packing case 39 for handling such as transportation. When the above-mentioned expansion of the body 36 occurs, an abnormal internal pressure is generated in the packing case 39, and in some cases, the adhesive state of the tape 40 for fastening the open part of the packing case 39 is deteriorated or separated. It will also let you.

Further, in the above-mentioned vacuum-packed hermetically-sealed package, the degree of expansion as described above can be comparatively made by appropriately selecting the type and thickness of the structure of the packaging bag and the forming material thereof. Although it is possible to keep it small, there are drawbacks such as the need for appropriate equipment and a slow production rate.

Therefore, the present invention has an object to provide a structure for a packaging body of volatile solid fuel, which can eliminate the above-mentioned problems and drawbacks due to expansion and the like.

[0010]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is configured as follows for a volatile solid fuel package. That is, in a hermetically-sealed packaging of a flexible film material for one or more volatile solid fuels, a fine ventilation part communicating with the inside is formed on a packaging bag part related to the hermetically-sealed packaging. Characterize.

In the constitutional feature of the present invention, as the volatile solid fuel, one in which alcohol is contained in a soap base material can be subdivided into a size of, for example, 15 g to 30 g and applied.

Further, this volatile solid fuel may be enclosed in the packaging bag as it is as the solid fuel material, but it is preferable to reduce the amount of gas volatilized into the packaging bag as much as possible. On the other hand, it should be shrink-wrapped with a resin film in advance.

Further, as the flexible film material, a resin film material or a metal foil material such as an aluminum foil which can obtain a hermetically sealed structure by itself can be used. It is also possible to use a laminated material of a metal foil material or a resin film material obtained by vapor deposition of a metal material. To seal the inside of the bag, a general method such as an adhesive method or an adhesive method can be used.

Further, as the ventilation part, it is possible to provide a perforation of, for example, about 0.4 mm φ to 0.9 mm φ on the main body surface of the packaging bag portion, and on the sealing piece portion of the packaging bag portion. Alternatively, a structure may be adopted in which an airway leading from the outside to the inside of the packaging bag is formed, or a structure in which fine ventilation holes are formed in the fusing and sealing portion.

[0015]

[Action]

 The operation of the present invention is as follows. As described above, the volatile gas of the fuel component gradually flows out from the volatile solid fuel contained in the wrapping bag, but the generated volatile gas mainly passes through the time corresponding to the generation time. It flows out through the upper ventilation part. As described above, a part of this volatile gas also flows out from the film material surface forming the bag portion.

Further, in particular, when an airway is formed on the sealing piece of the packaging bag as described above, the airway is initially closed due to the overlapping structure of the sealing piece. However, when the volatile gas generated in the bag is filled to some extent, the airway opens in response to the internal pressure, and the volatile gas gradually flows out.

The above-mentioned action of the volatile gas to flow to the outside can be performed by applying pressure to the package from the outside, for example, by storing a plurality of the packages in a packing case in a stacked state. It becomes more effective when stored.

[0018]

【Example】

 Next, an embodiment of the present invention will be described. First, the volatile solid fuel package 1 in the first embodiment shown in FIGS. 1 and 2 comprises 20 packaged solid fuels 30 in parallel and sealed in the packaging bag 2 in a sealed state. ..

The packaging bag portion 2 is sealed by the sealing piece portions 3 and 3 by the welding portions 4 on both side edges and the sealing piece portion 5 by the welding portion 6 extending over the center of the upper surface portion. Further, a perforation 7 is formed as a ventilation part at the center position of the upper surface which forms the main part of the bag part 2.

Next, a volatile solid fuel package 11 according to a second embodiment of the present invention is shown in FIGS. 3 and 4. In the packaging bag body 11, the packaging bag portion 12 for containing the packaging solid fuel 30 has both side edges sealed by the sealing pieces 13 by the welded portions 14. In the figure, reference numeral 15 is a sealing piece portion accompanied by a welded portion 16, and 14a and 16a are concave portions formed during the welding.

In this sealing piece portion 13, airways 17, 17 are formed by leaving unwelded portions between the welded portions 14 ... Therefore, in each of the airways 17, the portions forming the sealing piece portion 13 are initially in a superposed state and are maintained in a substantially closed state. However, this closed state opens the airway 17 as the inside of the bag 12 becomes pressurized (see FIG. 4).

A volatile solid fuel package 21 according to a third embodiment of the present invention is shown in FIGS. In the packaging body 21, the packaging bag portion 22 for accommodating the packed solid fuel 30 ... Is sealed at both side edges by sealing piece portions 23 by dot-shaped welded portions 24. In addition, in the figure, 24a is a recessed portion caused by welding.

In the sealing piece portion 23, a series of airways 25 ... Is formed by leaving an unwelded portion between the welded portions 24. Therefore, similarly to the case of the second embodiment described above, these airways 25 ... Are initially closed, but they are opened according to the pressurization state in the packaging bag 22 ( See FIG. 6.).

Test Example 1 Next, a test example of the volatile solid fuel package according to the present invention is shown. In this test example, the package 1 according to the first embodiment, which was constructed according to the following specifications, was used.

Wrapping part: Each of the following forming materials A, B or C was sealed and packed in parallel with 20 pieces of solid fuel. Forming material A: OPP20 / OV15 / LDPE60 Forming material B: KPET12 / CPP30 Forming material C: OPP20 / AL12 / ONY15 / LDPE50 In addition, OPP20: expanded polypropylene 20μ thickness, OV15: biaxially expanded polyvinyl alcohol double-sided vinylidene chloride coating material 15μ thickness, LDPE60: low density polyethylene 60μ thickness, KPET12: polyvinylidene chloride coated polyethylene phthalate 12μ thickness, CPP30: unstretched polypropylene 30μ thickness, AL12: aluminum foil 12μ thickness, ONY15: stretched nylon 15μ thickness, LDPE50: low density Polyethylene 50μ thickness.

Perforation: Formed by forming one circular hole of 0.40 mmφ, 0.60 mmφ, 0.75 mmφ or 0.90 mmφ at the center position of the upper surface of the packaging bag.

Packaged solid fuel: A solid fuel material in which methanol is contained in a soap base is shrink-wrapped with a polypropylene film (12 μ thick) on the entire surface, and an aluminum foil is formed in a container on the lower part of the solid fuel material. Dressed up, weight: 25g, shape and size: cylindrical 43mmφ × 23mm.

The package having the above specifications was housed in a packing case in the manner shown in FIG. 8 and left for 72 hours under a constant temperature condition of 30 ° C. As a result, no expansion was observed in any of the stored packages. In addition, as a result of testing the package without any perforation described above under the same conditions as above, it was confirmed that all the packages were greatly expanded.

Further, in order to confirm the amount of volatile gas emitted from the solid fuel, the weight reduction amount per unit area and the weight reduction amount per solid fuel related to the peripheral surface of the packaging bag are respectively 24 It is shown in the following Table 1 in terms of time.

[Table 1]

From the results shown in Table 1 above, there is no great difference in the volatilization amount of the volatile gas depending on the presence or absence of perforations in the packaging bag, and even when the perforations are formed, the forming materials A, B and C It can be confirmed that the volatilization amount varies depending on the gas barrier property of the forming material when comparing the reduction amounts.

The cause of the former is that when there is no perforation, the internal pressure in the package rises and volatile gas flows out from the surface of the forming material to the outside. It is relatively low, and it is considered that the outflow of volatile gas is less from the surface of the forming material, while it is thought to occur through perforations. It is also considered that the latter is due to the fact that the amount of volatile gas from the solid fuel also increases or decreases depending on the gas barrier performance of the forming material.

(Test Example 2) Next, each unit of the package formed of each of the forming materials A, B and C obtained in Test Example 1 was left for 72 hours under a constant temperature condition of 30 ° C. As a result, it was confirmed that the packages with perforations all had only a slight bulge, while the packages without perforations had an expansion state that was clearly different from this.

In order to confirm the volatilization amount of the volatile gas, the weight reduction amount of solid fuel per unit area on the surface of the bag portion and the weight reduction amount per solid fuel are converted into those per 24 hours, respectively. The results are shown in Table 2 below.

[Table 2]

As in the case of Test Example 1, it can be confirmed from the results in Table 2 above that the volatilization amount of the volatile gas of the solid fuel is not so different depending on the presence or absence of the holes.

[0035]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. First of all, since the wrapping part of the package can be prevented from expanding, it does not hinder its handling and is suitable for long-term storage.

Further, since the amount of volatile components contained in the solid fuel decreases only slightly due to the provision of the ventilation portion, the effectiveness of the solid fuel is not impaired even when the solid fuel is stored for a long period of time. Moreover, it is possible to secure safety against the outflow of the volatile gas.

Further, since the wrapping bag is made of a film, it is possible to expedite the packaging work for the volatile solid fuel and to economically perform the packaging and handling.

[Brief description of drawings]

FIG. 1 is a perspective view of a package according to a first embodiment.

FIG. 2 is a vertical sectional view of the same.

FIG. 3 is a partial perspective view of a package according to a second embodiment.

FIG. 4 is a vertical sectional view of the same.

FIG. 5 is a partial perspective view of a package according to the third embodiment.

FIG. 6 is a vertical cross-sectional view of the same portion.

FIG. 7 is a partial cross-sectional perspective view of packaged solid fuel.

FIG. 8 is a vertical cross-sectional front view illustrating a storage mode.

FIG. 9 is an explanatory vertical sectional view of a conventional package.

[Explanation of symbols]

 1,11,21 Packing body 2,12,22 Packing bag part 4,5,13,15,23 Sealing piece part 7 Perforation 17,25 Airway 30 Packing solid fuel

Claims (3)

[Scope of utility model registration request] 1. A hermetically sealed package made of a flexible film material for one or more volatile solid fuels, wherein a fine ventilation part communicating with the inside is formed on a packaging bag part related to the hermetically sealed package. A package for a volatile solid fuel characterized by: 2. The volatile solid fuel package according to claim 1, wherein the ventilation part is formed by perforation provided on the main body part surface of the packaging bag part. 3. The ventilation part is formed by an airway formed on a sealing piece part of the packaging part.
Volatile solid fuel packaging.