JPH06345070A - Solid fuel container - Google Patents

Abstract

PURPOSE:To obtain a solid fuel container which is useable with a high degree of convenience and safety in the open air, in an eating house or at home and is capable of filling various kinds of solid fuel, treating easily the residue after use and offering a high quality stability of the solid fuel when the container is kept in storage. CONSTITUTION:The solid fuel container is provided with a container body made of the sheet including a polyolefine resin layer containing 5-70% inorganic filling material in the form of a concavity and a lid body for covering the container body in a sealable manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention contains a solid fuel which can be used conveniently and safely at a restaurant, a restaurant, a hotel, etc. during a picnic or mountain climbing, or at home or outdoors. The present invention relates to a one-way type solid fuel container. More specifically, the present invention relates to a solid fuel container in which no harmful gas or unpleasant odor is generated when the container is burned and the residue can be easily treated after the burning.

[0002]

2. Description of the Related Art Conventionally, as a container for solid fuel, a metal can, a molded container made of 100% plastic, or a package made of cellophane or biaxially oriented polypropylene film, and a bag-like package for jelly-like solid fuel. Has been used. However, these containers have various drawbacks in terms of usability. For example, metal cans have to be post-treated after use and have problems in disposal. In the case of a molded container made of 100% plastic, the plastic forming the wall of the container melts faster than the burning speed of the fuel, and the internal fuel flows out from the collapsed wall. It adhered to the fire tray and the stove, and it was difficult to remove it.

Not only is it difficult to ensure the hermeticity of a product packaged with cellophane or a biaxially oriented polypropylene film, but since the film itself is thin, solid fuel volatilizes and a weight shortage occurs. Moreover, the volatilized components cause an odor, and there is a danger of exploding if a large amount is accumulated. Further, the jelly-like bagged fuel has poor self-sustaining stability, requires a special baking dish, and the residue after burning adheres to the burning dish, so that cleaning after use is troublesome.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
(1) Easy operation at the time of ignition, (2) Safe at combustion, and stable sustainability of thermal power, (3)
The residue of the molten incombustible material after combustion is as small as possible, and it is easy to remove and wipe the residue. (4) The container burns as the solid fuel burns; (5) Soot during burning Does not occur, and there is no generation of odor or harmful gas,
(6) The combustion residue of the container does not scatter and adhere to the surroundings, and (7) when storing and storing solid fuel, regardless of changes in the temperature and humidity of the storage environment for a long period of time. Another object of the present invention is to provide a one-way type solid fuel container having various requirements such that the solid fuel does not leak, seeps out, or deteriorates and the quality of the solid fuel can be preserved.

[0005]

As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that as a material for the container body, a polyolefin-based plastic material containing an inorganic filler in a considerable concentration or a similar material is used. The present invention has been completed by discovering that the processed product is a material capable of maintaining approximately the same level in the in-container balance of the burning solid fuel and the in-container balance of the burning container wall.

That is, the solid fuel container according to the invention of claim 1 is formed into a concave shape with a sheet containing at least one polyolefin resin layer containing 5 to 70% (weight / weight%, the same applies hereinafter) of an inorganic filler. The solid fuel container according to the second aspect of the present invention is characterized by containing 5 to 5 parts of the inorganic filler.
The solid fuel according to the invention of claim 3, characterized in that the sheet is formed into a concave shape by laminating a polyolefin resin layer on at least one surface of a sheet containing at least one polyolefin resin layer containing 70%. The container comprises the solid fuel container according to the invention of claim 1 or 2 as a container body, and the container body and a lid body whose surface adhered to a flange portion of the container body is formed of a polyolefin resin layer, It is characterized in that it is bonded at the flange portion of the container body.

[0007]

The polyolefin resin containing an inorganic filler used in the present invention is preferably a polypropylene or polyethylene sheet containing an inorganic filler. Resins such as polystyrene, nylon, polyvinyl chloride, polyethylene terephthalate, and polycarbonate are not suitable because they generate an odorous and irritating gas when burning, or generate a large amount of soot.

Further, the thickness of the wall portion of the container main body after being formed into a concave shape is preferably about 0.1 to 5 mm, and when it is thinner than this, combustion of the container is faster than combustion of solid fuel. As a result, the unburned fuel flows out, and it becomes difficult to maintain stable combustion. In addition, deformation and damage of the container during storage may cause leakage and leaching of solid fuel. On the other hand, when the thickness is thicker than this, the positional relationship between the fuel level at the time of solid fuel combustion and the balance due to burning of the wall of the container body may not be in harmony, and it may be difficult to maintain stable combustion.

Examples of the inorganic filler to be filled in the polyolefin resin used in the present invention include powders of calcium carbonate, talc, calcium sulfate, alumina, iron oxide, titania or sodium silicate and a mixture thereof. These inorganic fillers are uniformly kneaded with the resin of the material substrate.

Some of the inorganic fillers can significantly change the color tone of the flame during combustion, and it is safe to avoid using such inorganic fillers.

As the inorganic filler, a substance which is compatible with the base resin, silica-based, titanium-based, aluminum-based, organic-based inorganic filler surface modifier or powder coated with a coupling agent is used. As a result of improving the dispersibility of the inorganic filler in the base resin, the plastic material can be easily processed. If necessary, dyes, pigments, lubricants and the like may be added when the inorganic filler is added.

The mixing ratio of the inorganic filler is 5 to 70%.
Is appropriate. When the mixing ratio is within the same range, the wall of the container melts and collapses faster than the combustion speed of the fuel, the residual fuel after combustion and the remains of the container adhere to the surroundings, and the mixing ratio is within the same range. In such a case, workability in processing the material into the container body, strength of the container, or stable combustion may be hindered.

Further, the container body and the lid body are made of a material which is substantially incompatible with the solid fuel and which is stable against changes in temperature and humidity over a long period of time.

The solid fuel container according to the third aspect of the present invention has a lid. When the fuel is used, in addition to the case where the lid is peeled off and then used, the lid may be directly ignited to ignite the solid fuel.

The lid is made of a plastic material. It is not necessary to add an inorganic filler to the plastic material, but the material is selected in consideration of combustion. Suitable lid materials include polyethylene terephthalate on the outer surface of the container body, and inner surface,
That is, a polyolefin film such as a polypropylene or polyethylene film is used for the surface that contacts the flange of the container body, and the thickness of the former is 5 to 30 μm.
m, preferably 10 to 20 μm, the latter having a thickness of 15 to 15
A laminated film having a thickness of 0 μm, preferably 30 to 50 μm is most suitable.

Materials such as nylon, polyethylene terephthalate, and polycarbonate can be used as the lid material unless they are particularly thick.

For bonding the container body and the lid, bonding using various adhesives, bonding by heat sealing, bonding by hot melt or fusion by mutual friction can be applied. When the adhesive is not used, a material having thermal compatibility with both the main body and the lid is used as the material forming the contact surface between the container body and the lid. As for the adhesion between the container body and the lid, it is desirable that the lid retains its easy peelability when the lid is peeled off and used, and the strong adhesion is preferable when the lid is directly ignited for use.

The solid fuel container of the present invention can be filled with various solid fuels. For example, petroleum paraffin solid fuel,
Higher alcohol solid fuel, gelled alcohol solid fuel, hard emulsion solid fuel, etc. can be filled. The solid fuel container of the present invention can be effectively used particularly in the case of a solid fuel containing a liquid component that is easily separated and having a poor shape retention property, such as a gelled alcohol solid fuel.

As described above, the solid fuel contained in the processed solid fuel container made of the plastic material containing the inorganic filler can be used safely, and the quality of the solid fuel can be stably maintained during storage.

[0020]

【Example】

= Example 1 = (Production of main body of solid fuel container) The following five types of plastic sheets A to E containing an inorganic filler were processed by a pressure air processing method, and as shown in Table 1, each plastic sheet was processed. Cup-shaped solid fuel container bodies A to E corresponding to A to E were produced.

A: A thickness of 500 μ comprising 70 parts of polyethylene and 30 parts of talc powder (weight part, the same applies hereinafter)
m single layer sheet. B ... A 500 μm-thick single-layer sheet consisting of 50 parts of polypropylene and 50 parts of calcium carbonate powder. A laminated sheet obtained by laminating a polypropylene film having a thickness of 50 μm on a single layer sheet of C ... B. A single-layer sheet having a composition of D ... B and having a thickness of 700 μm. E: A single-layer sheet having a thickness of 1000 μm and composed of 60 parts of polypropylene and 40 parts of talc powder.

[0022]

[Table 1]

= Example 2 = (Selection of lid film attached to solid fuel container body and production of solid fuel container) The following is attached to each flange portion of the solid fuel container bodies A to E produced in Example 1. The films a to c for lids were aligned so that the polypropylene or polyethylene film side was in contact, and they were adhered to each other by a heat sealing method, and the adhered state was observed. It was confirmed that, in any combination, the adhesion between the container body and the lid was good, and the container was sealed.

The adhesion between the container bodies A to E and the lid a or b was good. Also, the container bodies A to E and the lid c
It was confirmed that the container was sealed and that the container was sealed. Peeling by hand was relatively easy.

A ... Biaxially stretched polyester film (thickness 12 μm) / biaxially stretched nylon film (thickness 1
5 μm) / polyethylene film (thickness 30 μm). b: Biaxially stretched polyester film (thickness 12μ
m) / polypropylene film (thickness 50 μm). c ... Biaxially oriented polyester film (thickness 12μ
m) / a laminated film composed of a polypropylene film (thickness: 50 μm) imparting an easy peel property [Product name TP-11; Showa Denko KK].

Example 3 = (Filling Test of Solid Fuel) The following two types of solid fuels I and II were used in Example 2 using the container body shown in Example 1 and the lid body shown in Example 2. According to the method, the combinations shown in Table 2 were filled and sealed, and five types of solid fuels [A] to [E] in containers were obtained.

I ... A composition in which activated alumina is added and mixed in an alcoholic gel containing a carboxyvinyl polymer and amines as a gelling agent. Jelly at room temperature. II .. Composition in which higher fatty acid such as stearic acid is added to and mixed with alcohol. Solid at room temperature.

[0028]

[Table 2]

= Example 4 = (Combustion Test) The container-filled solid fuels [A] to [E] produced in Example 3 were ignited, and the combustion state and the state of the residue after combustion were observed.

In any of [A] to [E], the combustion rapidly expanded regardless of the ignition site. Combustion proceeded steadily with a pale flame. During the progress of combustion, the flange portion of the container body does not melt and hang down, and the solid fuel does not flow out.The solid fuel and the wall portion of the container body continue to burn at the same speed, and the solid fuel And the balance on the wall of the container body kept the same level. No soot or odorous gas was generated during the combustion. At the end of combustion, the bottom of the container remained, and a small amount of unburned solid fuel remained on it. In any of the container-filled solid fuels, the combustion residue did not stick to the fire tray and could be easily removed by a simple procedure such as wiping the cloth pieces.

Example 5 = (Room Temperature Storage Test) Three [A] to [C] were left at room temperature of 10 to 23 ° C., and weight changes on 3, 7, 14, and 28 days were measured. . Table 3 shows these numerical values. The numerical value is the average value of 3 pieces.
As shown in Table 3, the amount of decrease is insignificant and it is considered that there is no substantial decrease.

[0032]

[Table 3]

= Embodiment 6 = (High-temperature storage test) [A] to [C] 3 pieces each at 40 ° C (temperature deviation, 0.1 ° C)
The weight change was measured on days 3, 7, 14, and 28 by keeping in a constant temperature bath kept at. Table 4 shows those numerical values. The numerical value is the average value of 3 pieces. As shown in Table 4, the amount of decrease is slight, and it is considered that there was no substantial decrease. Further, during the storage period, the odor of alcohol was not recognized and the container was not deformed.

[0034]

[Table 4]

= Comparative Example 1 = (Production of Sample) Cellophane (thickness 24 μm) / biaxially oriented polypropylene (thickness 20 μm) / polyethylene (thickness 1)
5 μm) / ethylene vinyl acetate copolymer (thickness 25 μm
m) using a laminated film consisting of
A pouch in which three sides of X65 mm and a sealing width of 8 mm were sealed was manufactured, 25 g of the same jelly solid fuel I as in Example 3 was filled, and the remaining open portion was sealed by heat sealing.

(Combustion test) The sample was placed on a dedicated metal fire tray, the corners of the pouch were ignited, and the combustion state was observed. Combustion started from the corner and gradually spread to solid fuel. It took some time until a stable flame was obtained after ignition. The flame had a slightly red color. It was also observed that the flame condition became unstable because the pouch covered the surface of the burning solid fuel. No smoke or odorous gas was generated. Burning ended in 25 minutes. The pouch that remained without being completely burned melted together with the incombustibles in the solid fuel and adhered to the combustion dish. The adhered resinous material could not be removed by a simple operation, and even if a cleanser was used, "stickiness" could not be completely removed.

(Storage Test under Room Temperature Environment) Under the same conditions as in Example 1, a storage test under a room temperature environment was conducted. Table 5
Shows the change in weight of the solid fuel over time, and the average change in weight per day during the period. Both are average values of three.

[0038]

[Table 5]

(Storage Test under High Temperature Environment) Under the same conditions as in Example 1, a storage test under a high temperature environment (40 ° C.) was conducted. Table 6 shows the weight change over time and the average weight change during the day. Both are average values of three. As shown in Tables 5 and 6, it was confirmed that the weight of the pouch container of this comparative example was remarkably reduced and that volatile components such as alcohol were permeated and diffused.

[0040]

[Table 6]

= Comparative Example 2 = (Production of Sample) A container body having the same form as the container E in Example 1 was produced from a sheet of 100% polypropylene resin containing no inorganic filler and having a thickness of 1000 μm.
After filling the container body with the solid fuel I, the lid film b similar to that shown in Example 2 was adhered and sealed by heat sealing.

(Combustion test) The flange of the above sample was ignited and its combustion state was observed. As the flange burned, the molten resin flowed down and scattered around. When the combustion progressed to the body, the wall melted faster than the solid fuel burned, and the resin in the wall was in a molten flow state and scattered and adhered to the surroundings. Instability was observed in the combustion state and thermal power. No soot or odor was generated.
The combustion lasted for about 100 minutes. At the end of combustion, the bottom of the container melted and was integrated with the incombustibles in the solid fuel and adhered to the fire tray. The resinous material that adheres cannot be removed by a simple procedure,
Even with a cleanser, it was difficult to completely eliminate "stickiness".

= Comparative Example 3 = (Production of Sample) 25 g of the solid fuel II described in Example 3 was cut into cubes, and a cellophane film having a thickness of 30 μm was used.
Caramel packaging was performed while gluing.

(Combustion test) The cellophane part of the above sample was ignited and the combustion state was observed. The combustion state is not constant,
The fluctuation of the thermal power was recognized. No soot or odor was generated. Burning lasted about 25 minutes. At the end of combustion, incombustibles in solid fuel adhered to the fire tray. The adhered resinous material cannot be removed by a simple procedure, and it was difficult to completely remove "stickiness" even by using a cleanser.

(Storage Test) The above 100 samples were placed in a metal can. The fitting parts of the main body and lid of the metal can were sealed with adhesive tape and stored at room temperature for 1 month. One month later, when the can was opened, there was an irritating odor of alcohol to the extent that it hurt the eyes. Again, the metal can was fitted with the lid, and the container was stored at room temperature for 3 months without being blocked with an adhesive tape. After 3 months, the sample was "thin" and had a weight loss of 30% or more.

[0046]

As described above, according to the present invention,
Since the constituent material of the solid fuel container is formed by using a material containing an inorganic filler in a polyolefin resin, there is no melting of the wall of the container at the time of combustion, and the wall of the container is synchronized with the combustion of fuel. Burned out and no fuel spilled. Therefore, the fuel can be burned without exhaustion. Further, when the fuel is completely burned, the bottom of the container may remain, but in such a case, cleaning of the residue is rather easy. The solid fuel container of the present invention can be filled with various types of solid fuel, and the solid fuel filled in the solid fuel container of the present invention can be easily ignited and stably maintain its thermal power. Also,
No soot or harmful gas is generated and it can be used safely. Further, the combustion residue after use does not scatter or stick, and can be removed and wiped by a simple procedure. According to the container for solid fuel of the present invention, the filled solid fuel can be stably stored for a long period of time regardless of temperature change and humidity change of the storage environment, and leakage, leaching or alteration of the solid fuel and deformation of the container. There will be no unfavorable changes such as.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Eiichi Kimura 165-1 Kawashima Higashimachi, Takamatsu City, Kagawa Prefecture

Claims (3)

[Claims] 1. A solid fuel container molded in a concave shape with a sheet containing at least one polyolefin resin layer containing 5 to 70% of an inorganic filler. 2. A solid fuel molded into a concave shape by a laminate formed by laminating a polyolefin resin layer on at least one surface of a sheet containing at least one polyolefin resin layer containing 5 to 70% of an inorganic filler. container. 3. The solid fuel container according to claim 1 or 2 as a container body, and the container body, and a lid body whose surface adhered to a flange portion of the container body is formed of a polyolefin resin layer. Is a solid fuel container in which the flange portion of the container body is bonded.