JP3382171B2 - Fruit bag - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to apples, grapes,
The present invention relates to a fruit bag used to protect peaches, pears and other fruits from insect damage, cold damage, sunburn and the like.

[0002]

2. Description of the Related Art Conventionally, fruit bags have been used to protect fruits. This fruit bag has an opening at the upper end for accommodating the fruit inside the bag, and a wire is sealed as a sealing member on the adhesive-bonded upper part of the bag. When using a fruit bag, after accommodating the fruit in the bag body through the opening, the opening end of the bag body is focused on the fruit shaft or branch and twisted for sealing. At this time, the wire itself has a shape-retaining function of easily plastically deforming with human hands while maintaining rigidity and retaining the shape after deformation as it is, so that the fruit bag can be easily sealed and removed, By keeping the sealed state, the fruit bag is locked on the fruit shaft or branch.

[0003]

However, the above-mentioned fruit bag has the following problems.
That is, when the used fruit bag is disposed of, it cannot be incinerated as it is because the wire is made of metal, and it is necessary to remove only the wire portion. Furthermore, there has been a problem that it is difficult to dispose of the wire after it is removed.

Further, the use of wire may damage the fruits and branches when the fruit bag is sealed or peeled off, and when dropped, there is a risk that an operator may accidentally step on the wire and be injured. .

Therefore, the present invention is intended to solve the above problems.

[0006]

In order to achieve the above object, a fruit bag according to the present invention has an opening portion for accommodating the fruit in the bag body, and has a shape-retaining function which is bendable near the opening portion. A sealing member is attached, wherein the sealing member is a cord-shaped body coated with a water-soluble polymer and / or a thermoplastic resin (hereinafter referred to as "coating agent"). Is.

Here, the string-like member means a string-like member having a length suitable for sealing, and not only a string made of natural fiber or synthetic fiber, but also a fiber or band of these fibers. The present invention includes not only those but also those obtained by cutting paper, woven cloth, non-woven cloth, or the like into an appropriate size.

That is, the inventor of the present invention, if a flexible string-like body is coated with a water-soluble polymer or a thermoplastic resin that has a certain rigidity at room temperature but is essentially fluid,
The present invention has been completed by finding that a sealing member that is bendable like a wire and has a shape retaining function can be obtained.

When a thermoplastic resin is used as the coating agent, a method of coating the string-shaped body with the thermoplastic resin is to cool or solidify a material obtained by applying the hot-melt type thermoplastic resin to the string-shaped body. A method in which a solvent-soluble or emulsion-type thermoplastic resin is applied to a string-shaped body and dried and solidified can be adopted.

However, when a hot-melt type thermoplastic resin is used, there arises a problem that the coating amount of the resin is apt to change, and when a solvent-soluble type thermoplastic resin is used, a solvent is used. It is necessary to strictly control the work environment because of the use of.

Therefore, in the present invention, a sealing member having a structure in which a water-soluble polymer is coated on a string-like member can be adopted. To coat the water-soluble polymer on the string-like body, the water-soluble polymer may be brought into an aqueous solution state, the string-like body may be impregnated therein, and then dried.

When an aqueous solution of a water-soluble polymer is used as described above, the coating amount of the resin can be easily controlled by adjusting the concentration of the aqueous solution, and since the volatile component is water, the sealing is performed. It is possible to easily secure the safety at the time of manufacturing the member. The sealing member thus obtained has the same rigidity as a wire and is bendable and has a shape-retaining function, so that the sealed state of the fruit bag can be maintained for a long period of time.

Here, the water-soluble polymer means a polymer that is soluble in water or warm water, and specifically, as a natural polymer, a synthetic polymer such as starch, casein, glue, gelatin, gum arabic, and pectin. Polyvinyl alcohol, sodium polyacrylate, polyethylene oxide, etc. as semi-synthetic polymer carboxymethyl cellulose,
Methyl cellulose, viscose, etc. can be mentioned. Above all, it is particularly preferable to use glue polymer such as glue and gelatin from the viewpoint of imparting rigidity and excellent shape-retaining property to the string-shaped body.

However, water-soluble polymers are generally low in water resistance, and there is a possibility that they will not exhibit their original properties when exposed to rainwater. Therefore, when a water-soluble polymer is used as a coating agent, it is preferable to use polyvinyl alcohol, which is one of the water-soluble polymers, which has a property of forming an excellent water-resistant film after drying.

When water-soluble polymer glue polymer and polyvinyl alcohol are used in combination as a coating agent, rigidity,
A sealing member excellent in shape retention and water resistance can be obtained.

As a method of increasing the water resistance of the water-soluble polymer, it is possible to use a thermoplastic resin together. In this case, both are dissolved or dispersed in an appropriate solvent and mixed, and the mixed solution is applied to a string-shaped body and then dried, or after coating the string-shaped body with a water-soluble polymer, A method of coating a thermoplastic resin on it can be adopted.

At this time, if a so-called O / W type emulsion in which thermoplastic resin particles are dispersed in water as a thermoplastic resin is used and mixed with an aqueous solution of a water-soluble polymer, a small amount of heat is generated in the water-soluble polymer. The plastic resin particles are in a uniformly dispersed state, and after applying the mixed liquid as a coating material to the string-like body and then performing a drying treatment, a sealing member having excellent water resistance can be obtained. Furthermore, since the volatile component is water, it is possible to easily ensure the safety at the time of manufacturing the sealing member as described above. Examples of the O / W type emulsion of the thermoplastic resin include acrylic copolymer resin and ethylene-vinyl acetate copolymer resin.

Since the sealing member described above is made of an organic substance, it can be incinerated together with the bag body, and the worker is not injured even when the bag is dropped. If a string-free material, a water-soluble polymer, and a thermoplastic resin, a halogen-free material such as the above-mentioned glue polymer, polyvinyl alcohol, an acrylic copolymer resin or an ethylene-vinyl acetate copolymer resin is used. Also, there is no danger of producing harmful substances such as dioxins when incinerated.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a fruit bag according to the present invention. This fruit bag 1 has the same structure as the conventional fruit bag except that the sealing member 2 is used instead of the wire, and has an opening 4 at the upper end for accommodating the fruit A inside the bag 3. However, the sealing member 2 is sealed on the upper portion of the adhesive bonding type 5 of the bag body 3.

When the fruit bag 1 is used, as shown in FIG. 2, after the fruit A is stored in the bag body 3 through the opening 4, the opening end 4a of the bag body 3 is placed on the fruit shaft B or the branch C. And then twist and seal. At this time, since the sealing member 2 is bendable and has a shape-retaining function, it retains the shape after bending, that is, the sealed state of the fruit bag.

[0021]

EXAMPLES The sealing member 2 will be described in more detail below with reference to examples.

(Example 1) The following materials were used as the cord-like body and the coating material which compose the sealing member. -String-like body: cotton thread with a diameter of about 0.5 mm (0.2 g / m) -Coating agent: As a coating agent, two kinds of water-soluble polymers, glue and polyvinyl alcohol, were used. actually,
The former was adjusted to a 60% by weight aqueous solution and the latter to a 15% by weight aqueous solution (Hirano Chemical Laboratory Co., Ltd., using H-Tack P), and then a coating solution was prepared by mixing the both in a weight ratio of 1: 3. .

When manufacturing the sealing member 2, a manufacturing apparatus as shown in FIG. 3 was used. The manufacturing apparatus 6 includes an impregnation tank 9 for applying the above coating liquid 7 to a cotton thread 8 in the form of a cord, and a drying box 1 for heating and drying the cotton thread 8 with the coating agent applied.
It has 0 and.

The unprocessed cotton yarn 8 is supplied to the manufacturing apparatus 6 at a speed of 3 m / min, guided through the first wheel 11 into the impregnation tank, immersed in the coating liquid 7, and then fed to the second wheel 1.
From the 2nd to the 3rd wheel 13, it is put in a submerged state. By thus immersing the cotton thread 8 in the coating liquid 7 for a while, the coating penetrates not only to the surface of the cotton thread 8 but also to the inside thereof, and imparts excellent rigidity and shape retention to the cotton thread 8. You can

The cotton yarn 8 drawn out of the coating liquid 7 by the fourth wheel 14 is scraped off of the excess coating liquid 7 by the control nozzle 15 and sent to the heating / drying box 10. The control nozzle 15 has a funnel shape, enters from the expanded diameter portion 16 and passes through a nozzle portion 17 having a diameter of about 1 mm and a length of about 3 mm. The nozzle portion 17 not only scrapes off the excess coating material, but also serves to allow the coating material on the surface of the cotton thread 8 to penetrate into the inside of the thread. It is necessary to use a size corresponding to the diameter of the cotton thread 8 to be used for the nozzle portion.

The drying box 10 has an internal temperature of 170-170.
It is heated to 180 ℃, and the cotton thread is in Box 1 for about 1 minute.
After being dried in 0, it is cooled from the drying box 10 and then cut into a predetermined length to be used as the sealing member 2. It is also possible to wind the cotton thread 8 discharged from the drying box 10 into a roll as it is, store it, and cut it while feeding it out by a necessary amount during bag making and use it as the sealing member 2.

The coating amount of the sealing member 2 produced as described above was 0.2 g per 1 m of the cotton thread as a solid content, and the proportion of the covering member in the sealing member was 50% by weight.

(Example 2) A sealing member was prepared in the same manner as in Example 1 except that the following coating materials were used.
The coating amount of the coating agent was adjusted to be the same as in Example 1. -Coating agent: As a coating agent, glue and an ethylene-vinyl acetate copolymer resin which is a thermoplastic resin were used. In fact, the former is a 60 wt% aqueous solution and the latter is 56 wt%.
O / W emulsion (manufactured by Showa Polymer Co., Ltd., EV
A AD-68 was used), and then the coating solution was prepared by mixing both in a weight ratio of 1: 3.

(Comparative Example) As a sealing member, the string-like body (cotton thread having a diameter of about 0.5 mm) used in the above-mentioned example was used as it was without being coated with a coating agent.

(Evaluation) The three types of sealing members produced as described above were sealed on the upper part of the body sticking type which had been coated with an adhesive to produce three types of fruit bags. Each fruit bag is
At random, 200 bags were hung on each apple and the number of bags dropped one month later (August 20 to September 20) was examined. The results are shown below.

・ Example 1 ... 1 bag / 200 bags (dropping rate 0.5%) ・ Example 2 ... 1 bag / 200 bags (dropping rate 0.5%) ・ Comparative example: 200 bags / Out of 200 bags (100% drop rate) From the above results, it can be seen that the number of dropped bags in the fruit bag according to the present invention is significantly reduced by coating the cotton thread which is a string-like body with the coating agent.

[0032]

As is apparent from the above description, according to the present invention, by using a fruit bag in which a string-like body is coated with a water-soluble polymer and / or a thermoplastic resin as a sealing member, The sealed state of the bag can be maintained for a long period of time, and since the sealing member is made of an organic material, it is possible to incinerate the fruit bag with the sealing member attached.

When an aqueous solution of a water-soluble polymer and / or an O / W type emulsion of a thermoplastic resin is used as the coating agent, the volatile component is water, so that the safety at the time of manufacturing the sealing member can be facilitated. It becomes possible to secure.

Above all, when a coating material containing glue polymer and polyvinyl alcohol is used as the coating material, a sealing member excellent in rigidity, shape retention and water resistance can be obtained.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a fruit bag according to the present invention.

FIG. 2 is a perspective view showing a usage mode of a fruit bag.

FIG. 3 is a sectional view showing an example of an apparatus for manufacturing a sealing member.

[Explanation of symbols]

1 fruit bag 2 Sealing member 3 bags 4 openings 4a Open end 5 adhesive type 6 Sealing member manufacturing equipment 7 Coating liquid 8 cotton threads 9 Impregnation tank 10 drying box 11 first wheel 12 Second wheel 13th wheel 14th wheel 15 control nozzle 16 Expanded part 17 Nozzle part A fruit B Fruit axis C branch

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Hirai 3-65448 (JP, U) Rikai Sho 55-51143 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01G 13/02 101

Claims (3)

(57) [Claims] 1. A fruit bag having an opening for accommodating fruits in a bag body, wherein a bending member having a shape-retaining function is attached in the vicinity of the opening, the sealing member comprising: A fruit bag formed by coating a string-like body with a water-soluble polymer and / or a thermoplastic resin. 2. A fruit bag having an opening for accommodating a fruit in a bag body, wherein a bending member having a shape-retaining function is attached to the vicinity of the opening, and the closure member is A fruit bag which is obtained by applying an aqueous solution of a water-soluble polymer and / or an O / W type emulsion of a thermoplastic resin to a string-shaped body and drying it. 3. The fruit bag according to claim 2, wherein the water-soluble polymer contains at least glue polymer and polyvinyl alcohol.