JPH02196891A - Rackaged fuel - Google Patents

Abstract

PURPOSE:To obtain a packaged fuel having excellent ignition property and combustibility, high fuel barrierness and excellent heat-sealing strength of the film surface used as the packaging material by using a specific laminated three- layered film as the packaging material for wrapping or packaging a fuel. CONSTITUTION:The objective packaged fuel can be produced by wrapping or packaging a liquid, gel or solid fuel with a three-layered film produced by laminating a cellophane film, a polyester film and a PE film each having a thickness of preferably 10-100mum. If necessary, a PE film containing vinyl acetate is laminated on the PE film of the three-layered film to form a four-layered film.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is applicable to liquid, gel, or solid fuels used as fuel for cooking and heating during hiking, mountain climbing, etc., and for tabletop stoves at home and restaurants. This invention relates to a fuel packaging body for covering or packaging fuel.

More specifically, the present invention relates to a fuel package having excellent ignitability and combustibility, excellent fuel barrier properties, and excellent heat fusion properties of the film surface of the package, that is, excellent sealing strength.

[Conventional technology] The use of a portable combustor that can be easily used for outdoor cooking and heating, and can also be used indoors as a tabletop stove is
Although the number of such fuels has been increasing recently, liquid, gel, or solid fuels containing methyl alcohol as a main component are the mainstream.

[Problem to be solved by the invention] These fuels are highly volatile and must be stored in sealed cans at all times.

When the fuel is in gel form, it is necessary to use a suitable spoon to transfer the fuel when it is used for combustion, which is very troublesome to handle.

In order to solve these problems, is there a way to fill a tube with liquid or gel fuel and take out only the amount necessary for combustion into the combustor? It was not a definitive solution, as it required wiping off the adhering fuel by hand.

Recently, in order to solve these problems, so-called bag fuel, which allows fuel to be packed in a package of about 10g to 100g and easily taken out without getting your hands dirty, has been sold and has become quite widespread. are doing.

However, as a result of various studies by the present inventors, approximately 4
It was found that there was a fuel loss of ~5%, approximately 8-10% over three months, and that the barrier properties of the fuel were not perfect.

Therefore, the present invention has excellent combustibility, excellent fuel barrier properties to prevent the fuel from escaping outside the package in gas or liquid form, and moreover, when stacked and sealed by heat fusion. It is an object of the present invention to provide a fuel packaging body which has excellent thermal fusion properties between films used as a packaging body.

[Means for Solving the Problems] The present inventors have made extensive studies to achieve the above object, and as a result, have arrived at the present invention.

That is, in the fuel packaging body according to the present invention, the packaging material for covering or packaging liquid, gel, or solid fuel is composed of a three-layer film in which a cellophane film, a polyester film, and a polyethylene film are laminated; The packaging material for covering or packaging solid or solid fuel is characterized in that it consists of a four-layer film laminated with a cellophane film, a polyester film, a polyethylene film, and a vinyl acetate-containing polyethylene film.

Further, in a preferred embodiment, the thickness of the film of each layer is 10 to 100 cm.

In other words, in order to improve ignitability and combustibility,
Cellophane film is used on the outside, and the second layer is a polyester film that has high fuel barrier properties and is strong, in order to prevent highly volatile substances such as methanol in the fuel from escaping to the outside. For the eye film, we used a polyethylene film that was strong enough to have heat-sealing properties between the films as a packaging body and was difficult to tear. If necessary, to increase the strength of
By combining a polyethylene film containing preferably 1-40% vinyl acetate, more preferably 5-15% vinyl acetate as the fourth layer film, it has much better ignitability and combustibility than conventional products, and reduces fuel consumption. We have succeeded in manufacturing a fuel packaging body that is rich in barrier properties and also has excellent heat fusion properties between the films used as the packaging body.

In the present invention, the outer (first layer) cellophane film is a regenerated cellulose film obtained from viscose, which is easily ignited with a matchstick and is quickly contained in the package or package. It is used to combust the existing fuel. Such a film can be obtained as a commercial product, and for example, a film manufactured by Kite Chemical Industry Co., Ltd. can be used.

In addition, the 3M layer, and if necessary, the 4th layer of polyethylene film, is made to have strength as a packaging body, and improves the fusion properties when the films are overlapped and heat-sealed, making it possible to seal the fuel packaging body. It has the effect of increasing sex. In particular, vinyl acetate is preferably applied to the fourth layer of polyethylene film.
When containing 40%, more preferably about 5 to 15%,
Thermal adhesion is extremely high when polyethylene films are laminated together. As such a polyethylene film, for example, a medium-high density polyethylene film having a degree of polymerization of about 50,000 is used, and is commercially available, for example, as a film manufactured by Kite Chemical Industry Co., Ltd.

The second layer of polyester film is the greatest feature of the present invention, and is not found in conventional products.In other words, the polyester film has low permeability to gases and volatile vapors, and has appropriate strength as a packaging body. Furthermore, it has the great advantage of being excellent in combustibility and producing little smoke and odor. As such a polyester film, a polyethylene terephthalate film is used.

It is preferable that the film of each layer according to the present invention has a thickness of 10 to 100 p-. From the viewpoint of ease of handling as a package and flammability, the thinner the film, the better. Thicker is preferable in terms of resistance to tearing (breakability) and integrity of the seal created by heat fusion.
Furthermore, ease of handling as a package, flammability,
Considering the integrity and breakability of the seal by thermal fusion, it is more preferable to use a sheet in which each layer has a thickness of about 15 to 30 pot layers.

The laminated film may be manufactured by any method as long as each film can be adhered to each other, and a predetermined three or four layer laminated film can be formed by using an appropriate adhesive, heat fusion, or the like. Alternatively, a laminated film may be obtained by integrally molding by coextrusion, and this film may be subjected to a stretching treatment.

Moreover, the covering or packaging for sealing the fuel with the laminated film may be performed by any method.

For example, there are coating or packaging methods such as heat fusion and adhesive bonding. However, at present, thermal fusion is the most common method due to its cost and ease of handling.

In addition, the shape of the package does not matter as long as it can seal the fuel, but it is desirable to form a part at the end of the package that does not create an overlapping layer when it is sealed. If so, it can be ignited more easily by igniting it here.

The fuel used in the present invention is a liquid, gel, or solid fuel, and the object of the present invention can be achieved using any of the fuels.

When gel-like fuel is used as a fuel, compared to when solid fuel is used, its shape can be changed more freely, it is easier to handle, it has better ignitability, and there is less residual liquid after combustion. effective.

In addition, this package is pressure resistant even for gel fuel with higher methanol content (which may result in higher vapor pressure).
It can be used because of its excellent barrier properties.

Preferred gel-like fuels used in the present invention include 1, for example, 80% or more methyl alcohol, 5 to 20%! II
(1% isopropanol, 5-10fiJ1% gelling agent to high methanol gelled fuel, 5oft amount%
A gel-like mixture consisting of the above isopropanol, 10 to 45% methyl alcohol, 3 to 20% water, 0.5 to 2% polyethylene glycol, and 44% sodium salt. Fuel (JP-A-62-16
4794), or 501i mass% or more of ethylene glycol, 10-40!1 mass% of carbon 1-3 monohydric alcohol, 3-15% of water, 0.2-lfi mass%
Gel-like fuel consisting of a water-soluble polymer (JP-A-63-2
70797), but are not limited to these.

[Example] Next, the present invention will be specifically illustrated by examples.

This embodiment is not intended to be limiting unless it goes beyond its gist.

Examples 1 to 4 As shown in Table 1, gel fuels with the following compositions containing methanol as the main component were each applied to packaging materials with different film materials.
30 g each was collected as shown in FIG. 2, and three sides were sealed by heat fusion so that it had the form shown in FIG. ff51.

In the figure, 1 is a gel fuel, 2 is a packaging material, 3 is a crimping part, 4 is a folded part, and 5 is a lighting part.

The cellophane film in packaging material 2 is a regenerated cellulose film obtained from viscose (manufactured by Kite Chemical Industry Co., Ltd.)
The polyester film used was Botethylene terephthalate film (manufactured by the same company), and the polyethylene film used was a medium-high construction method high-density polyethylene film with a degree of polymerization of about 50,000 (manufactured by the same company).

After measuring the seal strength of the heat-sealed surface (tensile strength of the 15 mm long welded surface), each sample was heated at room temperature.
Leave it in the air for 3 months and measure the rate of decrease in gel fuel.
Furthermore, the ignitability and combustibility of the fuel were investigated. The results are shown in Table 1.

The ignitability of each sample was tested in part 5.
Then, it was ignited using a matchstick, the ignition time was measured, and the ignitability was determined.

In addition, "flammability" was determined by observing the soot emitted during combustion, the state of smoke, the combustion time, etc.

<Composition of gel fuel) Methanol 85wt% isopropanol 10wt% gelling agent
5wt% or less Margin Comparative Examples 1 to 4 Similar packaging materials were made in the Examples except that the material and thickness of the packaging materials were changed as shown in Table 2, and evaluated in the same manner. The results are shown in Table 2.

The following margin*Example 5, 6 When left in the air for 3 months Carefully put 30g of Wako Tsumugi Kogyo Co., Ltd.'s reagent grade 1 methanol into various packaging materials as shown in Table 3, as shown in Figures 1 and 2. As shown in the figure, the mixture was poured into a bag obtained by sealing three sides by heat fusion, and finally the open part was sealed with adhesive.

Each sample was left in the air at room temperature for three months, and the reduction rate of methanol was measured using the same test method as in Example 1, and the ignitability and combustibility of the fuel were also examined. The results are shown in Table 3.

Comparative Examples 5 and 6 Comparative Examples 5 and 6 were carried out in the same manner as in Examples 5 and 6. The results are shown in Table 3.

Below are blank examples 7 and 8. Solid fuel containing methanol as the main component (solid fuel) [white bear mark manufactured by Watanabe Chemical Co., Ltd.] was used in various packaging materials as shown in Table 4.
That is, 30g each of solid fuel consisting of 88wt% methanol and 12% additive, Figures 1 and 2rI! It was wrapped in the manner shown in I and sealed on three sides by heat sealing.

Each sample was left in the air at room temperature for three months, and the reduction rate of methanol was measured using the same test method as in Example 1, and the ignitability and combustibility of the fuel were also examined. The results are shown in Table 4.

Comparative Example 7.8 This was carried out in the same manner as in Example 7.8. The results are shown in Table 4.

Margin below [Effects of the Invention] Since the present invention is configured as described above, it produces the effects described below.

Since it is made of cellophane film, polyester film, and polyethylene film 31a, it has excellent sealability and strength as an ignitable and combustible packaging when used as a packaging for liquid, gel, or solid fuel, and has excellent sealability and strength, especially during storage. Fuel reduction rate is small.

In addition, when a package is made of four layers of polyethylene film containing vinegar-ugly vinyl, the sealing strength is significantly increased compared to a package with three layers.

Further, by setting the thickness of each layer to 10 to 100 JL, it is possible to improve the seal integrity and the breakability of the package due to thermal fusion.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a state in which fuel is packaged with a packaging body according to the present invention, and FIG. 2 is an explanatory diagram showing a state before the packaging body is crimped (adhered). 1 Nigel-like fuel 2: Packaging material 3: Crimping part 4: Folded part 5: Lighting part diagram

Claims (1)

[Claims] 1. A fuel packaging body characterized in that the packaging material for covering or packaging liquid, gel, or solid fuel is composed of a three-layer film in which a cellophane film, a polyester film, and a polyethylene film are laminated. 2. A fuel packaging body characterized in that the packaging material for covering or packaging liquid, gel, or solid fuel is composed of a four-layer film laminated with a cellophane film, a polyester film, a polyethylene film, and a vinyl acetate-containing polyethylene film. 3. The thickness of the film of each layer is 10 to 100
The fuel package according to claim 1 or 2, which has a diameter of μm.