JP2010105973A - Watering bag for cut flower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a watering bag for cut flowers, capable of transporting by packaging the cut parts of cut flowers simply, also having an excellent freshness-holding effect and having less water leakage during transportation. <P>SOLUTION: The watering bag for the cut flowers is provided by between a rectangularly cut waterproof film 1 and nonwoven fabric 2, overlapping a water-absorbing sheet 3 having ≥15 g/10×10 cm water-holding capacity and having a smaller width than the above film and fabric, forming a bottom part 4 by folding back from a position of almost half in longitudinal direction so that the nonwoven fabric 2 becomes inside, and sealing the both side end parts 5 consisting of the waterproof film and nonwoven fabric. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a water supply bag for cut flowers suitable for maintaining freshness when transporting cut flowers and the like.

Traditionally, cut flowers have been transported by bundling multiple cut flowers and packing them in cardboard as they are, or wrapping the cut flowers with water-containing newspaper, cotton, gauze, etc., and covering the outside with a film to wet the cuts. Generally, it is packed in cardboard and transported.

However, if the cut ends are transported without being wetted, the cut flowers will wither in a short time, and the commercial value is often lost when they reach the destination. In addition, even if the cut end of the cut flower is wrapped with newspaper or the like wetted with water, there is a problem that the freshness of the cut flower cannot be maintained if it exceeds about one day because the amount of water retention is small.

In order to solve such problems, various proposals have been made. For example, Patent Document 1 (Japanese Utility Model Laid-Open No. 62-122078) discloses a water storage and bundling tool for transporting and storing a plurality of cut flowers inserted and held in a bottomed cylindrical bag made of an elastic foam synthetic resin material. Proposed.

In Patent Document 2 (Japanese Patent Laid-Open No. 2001-120064), after water is contained in a lump-like foam like polyurethane foam, cut flowers are inserted, and the foam is made into a bag-like film. It has been proposed to wrap and tie the bag mouth for transport.

Furthermore, in Patent Document 3 (Japanese Patent Laid-Open No. 2002-068901), water is added to a fiber assembly mainly composed of cellulose fibers having an average fiber length of 1.5 mm or less to form a mud, which is stored in a polyethylene bag. It has been proposed to insert cut flowers and tie the mouth of the bag for transport.
Japanese Utility Model Publication No. 62-122078 JP 2001-120064 A JP 2002-068901 A

However, the above known methods have the following problems.

For example, in the water retention and sizing tool for transportation and storage as disclosed in Patent Document 1, even if water for maintaining freshness is added, water moves downward due to gravity in the foamed synthetic resin material, and much flows out. In many cases, the water retention effect could not be obtained, or the water was discharged from the foamed synthetic resin material during transportation, and the surrounding area was soiled.

Further, in the method of inserting cut flowers into a lump-like bubble-like object as disclosed in Patent Document 2, it is necessary to insert the cut flowers bundled into a plurality of pieces into the bubble-like substance one by one. Not only is this time consuming, but also in this case, there is a problem that the water contained in the lump-like bubble-like material oozes out by compression when the cut flowers are inserted, resulting in deterioration of the water retention effect and water leakage.

Furthermore, with the freshness-keeping material disclosed in Patent Document 3, it is necessary to stir short cellulose fibers until they become mud, which is troublesome. However, the water retention effect is insufficient, and no matter how much the film is wrapped, water leaks from the bag mouth.

In view of the above problems, an object of the present invention is to provide a water supply bag for cut flowers that can be easily packaged and transported with cut ends of cut flowers and that has an excellent freshness-keeping effect and less water leakage during transport. .

As a result of earnest research to achieve the above object, the present inventors have arranged a water absorbent sheet between the waterproof film and the nonwoven fabric, so that cut flowers can be easily inserted and the water absorbent sheet in a water retaining state It is found that the slippage due to its own weight can be prevented, the water absorbent sheet is appropriately compressed by the waterproof film and the nonwoven fabric, and the water contained in the sheet oozes out little by little at all times and the water supply effect to the cut flower is improved. The present invention has been completed.

That is, the first invention of the present invention is a water-absorbent sheet 3 between the waterproof film 1 and the non-woven fabric 2 cut into a rectangular shape and having a water retention capacity of 15 g / 10 × 10 cm or more. Is a water supply bag for cut flowers formed by folding back from about half of the longitudinal direction so that the nonwoven fabric 2 is on the inside, forming the bottom portion 4 and sealing both side edges 5 made of a waterproof film and the nonwoven fabric,
2nd invention is the water supply bag for cut flowers of 1st invention whose said water absorbing sheet 3 is a urethane resin foam sheet,
3rd invention is the water supply bag for cut flowers of the 2nd invention in which the sealing wire 6 for the inclusion water outflow prevention is provided in the urethane resin foam sheet,
In a fourth aspect of the invention, the sealing line 6 of the urethane resin foam sheet has a line width of 0.5 to 10 mm, and is provided in the lateral direction at an interval of 25 to 100 mm from the side end and / or the bottom of the foam sheet. A water supply bag for cut flowers according to any one of the second to third inventions,
5th invention is the water supply bag for cut flowers in any one of the 1st thru | or 4th invention by which the both-sides edge part 5 is sealed in the form by which the upper end opening part 7 of the bag was turned inward.

The water supply bag for cut flowers according to the present invention has the above-described configuration, so that the cut flower can be easily inserted into the bag, the bag does not become bulky because there is no slippage due to its own weight after water absorption of the water absorbent sheet, and the water supply is high. It is a water supply bag suitable for maintaining the freshness during transport of cut flowers, which has many excellent effects such as little effect and water leakage.

First, although the water supply bag for cut flowers of this invention is demonstrated with drawing, these are only examples of the form for implementing this invention, and this invention is not limited to these embodiment.

FIG. 1 is a schematic cross-sectional view illustrating a configuration example of a water supply bag for cut flowers according to the present invention, and FIG. 2 is a schematic plan view of the water supply bag.

As shown in FIG. 1, the water supply bag for cut flowers of the present invention has a water-absorbing sheet 3 having a smaller width than a rectangular waterproof film 1 and a non-woven fabric 2 that are cut to approximately the same dimensions. After the bottom 4 is formed by folding back from about half the longitudinal direction so that the inner side becomes inside, both side end portions 5 made of a waterproof film and a nonwoven fabric are sealed as shown in FIG.

The cut flower as used in the field of this invention points out what was pruned from the suitable part of the plant which has a flower, a bud, and a branch and leaf.

Examples of the waterproof film used in the present invention include polyolefin films such as polyethylene and polypropylene, and films made of synthetic resins such as polystyrene, polyvinyl chloride, polyethylene terephthalate, and polyamide. Among them, sealability, moderate flexibility, and economical efficiency From this point, a polyethylene film is preferable. The waterproof film may have a thickness of 5 to 100 μm, preferably 10 to 50 μm, in terms of strength and workability.

The nonwoven fabric is made of polyolefin such as polyethylene and polypropylene, synthetic resin fibers such as polyethylene terephthalate, polyamide and polystyrene, and cellulosic fibers such as rayon, cotton and pulp. Synthetic resin fibers that can be heat-bonded in relation to sealing, among them, those mainly composed of polyethylene, polypropylene, polyethylene terephthalate, or the like are preferable. Also, the basis weight of the nonwoven fabric, 5 to 50 g / ^{m 2} and the like ease of insertion of the strength and cut flowers, preferably those 10 to 30 g / ^{m 2.} When the basis weight of the nonwoven fabric is less than 5 g / m ^2, it tends to be caught when inserting cut flowers, and due to insufficient strength, bleeding of water from the water-absorbent sheet due to compression with the waterproof film is worsened. On the other hand, when the basis weight exceeds 50 g / m ² , water contained in the water-absorbent sheet is not easily transmitted to the cut portion of the cut flower, resulting in a disadvantage that the effect of maintaining freshness is lowered.

The water-absorbing sheet used in the present invention is not particularly limited as long as it has a water retention capacity of 15 g / 10 × 10 cm or more, preferably 20 g / 10 × 10 cm or more. Water-absorbing paper having fiber, fiber mats such as rayon, cotton, and pulp, and synthetic resin foam sheets such as urethane resin, phenol resin, melamine resin, ethylene-vinyl acetate resin, polyethylene, and polypropylene are preferably used. If the water-holding capacity of the water-absorbent sheet is less than 15 g / 10 × 10 cm, the effect of maintaining the freshness of cut flowers cannot be obtained.

In the present invention, the water retention capacity is the same size from the weight after 1 minute elapses after immersing a water-absorbent sheet cut to 10 cm in length and width in tap water, allowing water to be saturated until it is saturated, and then hanging vertically. It is expressed as a value obtained by subtracting the weight when water is not included.

Among such water-absorbent sheets, considering water retention and bag-making processability as a water supply bag for cut flowers, the thickness is ³ to 15 mm, the density is 0.01 to 0.10 g / cm ³ , preferably the thickness is 4 to 10 mm. A urethane resin foam sheet having a density of 0.01 to 0.05 g / cm ³ is suitable. The urethane resin foam sheet may be hard, semi-rigid, or soft, but preferably has open cells, and more preferably has been subjected to a hydrophilic treatment with an ionic or nonionic surfactant. Here, the ionic surfactant is a surfactant in which the hydrophilic group portion is ionized into an anion or a cation and further an amphoteric ion when dissolved in water, and one nonionic surfactant is glycerin. Examples thereof include those in which a polyhydric alcohol such as sorbitol and a fatty acid are ester-bonded, and those obtained by mainly subjecting ethylene oxide to addition polymerization to a raw material having a hydroxyl group such as a higher alcohol or alkylphenol.

Further, when water absorbent paper is used as the water absorbent sheet, when the water retention capacity is insufficient with only one sheet, it is preferable to use a plurality of sheets so that the water retention capacity is 15 g / 10 × 10 cm or more.

The water supply bag for cut flowers according to the present invention can prevent water leakage due to the waterproof film by adopting the above-mentioned configuration, and since the inside of the bag is made of a nonwoven fabric, the cut flowers can be smoothly inserted without being caught, and work efficiency Becomes much better. In the present invention, since the water absorbent sheet is formed in a form sandwiched between the waterproof film and the nonwoven fabric, when the cut flower is inserted into the water supply bag, the water absorbent sheet is appropriately placed between the waterproof film and the nonwoven fabric. Therefore, the oozing of water from the water-absorbent sheet is stably maintained, and excellent water supply and freshness maintaining effects can be obtained.

In the present invention, when a urethane resin foam sheet is used as the water absorbent sheet, a sealing line 6 for preventing the outflow of water contained in the foam sheet is provided as shown in FIG. 3 in order to increase the water retention effect. Are preferred. The sealing water for preventing the contained water from flowing out becomes a “weir” for preventing the water in the foam sheet from flowing out due to gravitational movement, and the sealing line is linearly formed by hot press. What is provided and thermocompression-bonded so that it may become 5 to 30% of thickness with respect to the thickness of a water absorbing sheet is preferable.

The sealing line 6 may be provided at any position as long as the effect of suppressing the outflow of water from the urethane resin foam sheet can be achieved, but the line width is 0.5 to 10 mm, preferably from the balance with the water absorption amount. It is preferably 1 to 6 mm and provided in the lateral direction at intervals of 25 to 100 mm from the side end portion and / or the bottom portion 4 of the urethane resin foam sheet as shown in FIG.

If the line width of the sealing wire is less than 0.5 mm, the return due to the elasticity of the urethane resin is strong, and it is difficult to obtain the effect of preventing the outflow of contained water. Less. In addition, the position of the sealing line is provided at the side end of the foam sheet, so that the outflow of water from the end of the foam sheet is suppressed, and when provided in the lateral direction of the bag, the distance from the bottom is less than 25 mm When the water retention amount of the foam sheet is reduced and the interval exceeds 100 mm, the effect of preventing the outflow of water is reduced. In the case of a urethane resin foam sheet having a thickness of 2 to 15 mm and a density of 0.01 to 0.10 g / cm ³ , the water retention amount of the absorbed water is 40 in the lateral direction due to the relationship between the size of the foam cell and the surface tension. It becomes the largest when provided at intervals of ˜80 mm.

As shown in FIG. 5, the water supply bag for cut flowers according to the present invention seals both end portions in a shape in which the upper end opening of the bag is folded inward, so that even if water accumulates in the bag, the upper end folding of the bag is performed. The foam sheet absorbs water at the portion 7 and water leakage can be more reliably suppressed.

Next, the usage example of the water supply bag for cut flowers of this invention is demonstrated.

The cut flowers that can be used in the water supply bag for cut flowers of the present invention can be applied to any plant that has flowers, buds, branches and leaves. Examples of plants having flowers include carnation, chrysanthemum, orchid, gerbera, sweet pea, and gloriosa, and examples of plants that have no flowers and enjoy branches and leaves include saintpaulia and poinsettia.

In the water supply bag for cut flowers of the present invention, one or more bundles of the above-exemplified cut flowers are inserted into the bag from the upper end opening of the bag, and a necessary amount of water is injected into the bag according to the type of cut flower. After that, the mouth of the bag is fixed with a string or rubber ring. At this time, in order to uniformly absorb water into the water-absorbent sheet, it is better to lightly squeeze by hand from outside the bag after water injection.

Further, the water used in the present invention preferably contains plant nutrients, antibacterial / antifungal agents, freshness maintaining agents and the like. As nutrients, saccharides such as sucrose and granulated sugar are generally used. As the antibacterial / antifungal agent, inorganic metal salts such as silver, copper and zinc, natural extracts such as hinokitiol, and organic derivatives such as imidazole derivatives and benzothiazole derivatives can be used.

According to the water supply bag for cut flowers of the present invention, sufficient water can be continuously supplied to the cut flowers, and since there is little water leakage, the cut flowers can be arranged side by side in the cardboard, and stacked over several stages. The transportation efficiency is high, and it is possible to transport to a remote place without withering the cut flowers.

Hereinafter, the water supply bag for cut flowers according to the present invention will be described with reference to examples, but the present invention is not limited to these examples.

First, in describing the examples and comparative examples, the following water-absorbing sheets cut to a length of 170 mm and a width of 100 mm constituting the water supply bag for cut flowers were prepared.

Water-absorbent sheet (1); urethane resin foam sheet (made by Kurabo Kansai Kasei) having a thickness of 5 mm and a density of 0.016 g / cm ³
Water-absorbent sheet (2); sheet water-absorbent sheet (3) in which 12 sheets of water-absorbent paper (tissue base paper manufactured by Kami Shoji Co., Ltd.) having a basis weight of 27 g / m ² are stacked; on the side bottom end of the water-absorbent sheet (1), Sheet water-absorbing sheet (4) provided with a sealing wire having a width of 3 mm and a thickness of 1 mm by hot-pressure sealing; laterally pressing at the side bottom end of the water-absorbing sheet (1) and at a position 70 mm above the bottom Sheet water-absorbing sheet (5) provided with a sealing line having a width of 3 mm and a thickness of 1 mm by urethane foam sheet (made by Kurabo Kansai Kasei) having a thickness of 2 mm and a density of 0.030 g / cm ³
Water-absorbent sheet (6): Sheet of 6 sheets of water-absorbing paper (tissue base paper manufactured by Kami Shoji Co., Ltd.) with a basis weight of 27 g / m ²

After immersing the above water-absorbent sheet in tap water until water is saturated, the water-absorbing sheet is hung vertically, and the weight of the time after 1 minute, 4 minutes, 7 minutes and the weight after 1 minute has passed. The calculated water retention capacity is shown in Table 1, respectively.

(Examples 1-4, Comparative Examples 1-2)
Between a low density polyethylene film (made by Fukusuke Kogyo Co., Ltd.) having a thickness of 20 μm cut into a length of 340 mm and a width of 120 mm, respectively, and a polypropylene non-woven fabric (made by Shinwa Co., Ltd.) having a basis weight of 18 g / m ² Each of the above water-absorbing sheets (1) to (6) cut into a width of 100 mm is sandwiched and folded back with a nonwoven fabric inside from a length of 170 mm as shown in FIG. Only the bag was heat-sealed to produce a bag having dimensions of 170 mm in length and 120 mm in width. Table 2 shows the results of evaluating the presence or absence of water leakage and freshness retention of these bags.

The presence or absence of water leakage and freshness retention were evaluated by the following methods.

After pouring 150 cc of water into the water bag and gently squeezing it by hand, 10 chrysanthemum cut flowers that were cut to a length of about 60 cm were bundled and inserted into the water bag. Thereafter, the mouth of the bag was fixed with a rubber ring. The chrysanthemum cut flowers were examined for water leakage when left standing in a room at 25 ° C., and the freshness retention of chrysanthemums was evaluated. The case where almost no water leakage was observed was indicated by (O), the case where water leakage was slightly observed but not causing any trouble in transportation (Δ), and the case where there was much water leakage was indicated by (X). The freshness retention was determined visually by the number of days that the freshness of chrysanthemums was maintained.

(Example 5)
As shown in FIG. 5, a water supply bag for cut flowers was produced in the same manner as in Example 1 except that the upper end opening of the bag was folded inward by about 15 mm, both side edges were sealed, and the upper end folding portion 7 was provided. . When the water supply bag was used, no water leakage was observed, and the freshness retention was maintained for 4 days.

(Comparative Example 3)
A water supply bag for cut flowers was produced in the same manner as in Example 1 except that the bag was composed of only the low-density polyethylene film and the water-absorbent sheet (1) without using a polypropylene nonwoven fabric. In the bag, when the cut flower is inserted, the water-absorbent sheet is caught and the workability is poor, and the water seepage from the water-absorbent sheet is deteriorated, or the retained water-absorbent sheet is shifted to the bottom of the bag by its own weight. In addition to the above problems, freshness retention was unsuitable as a water supply bag for cut flowers.

From the above Examples and Comparative Examples, the water supply bags of the present invention (Examples 1 to 4) in which a water-absorbent sheet having a water retention capacity of 15 g / 10 × 10 cm or more is placed between the waterproof film and the nonwoven fabric to form a bag are as follows. It can be seen that it is effective in maintaining the freshness of cut flowers and has little water leakage. Moreover, when a urethane resin foam sheet is used as the water-absorbent sheet, the water retention ability is improved by providing a sealing wire for preventing inclusion water from flowing out, and the freshness retention is further improved (Examples 3 to 4). Furthermore, it is clear that the problem of water leakage is remarkably eliminated by forming the upper end opening of the bag inward (Example 5).

The water supply bag for cut flowers of the present invention is excellent in water retention and water supply, and also has little water leakage from the bag during the transportation process, and thus is particularly suitable as a bag for keeping freshness when transporting cut flowers.

Is an example of a water supply bag for cut flowers according to the present invention, in which a water absorbent sheet is disposed between a waterproof film and a nonwoven fabric, and the water supply bag is folded back from about half the longitudinal direction so that the nonwoven fabric is inside. FIG. FIG. 2 is a schematic plan view of FIG. 1. These are sectional drawings which show an example of the sealing wire provided in the urethane resin foam sheet. These are the plane schematics which show an example of the position of a sealing line. These are the cross-sectional schematics which show the state which folded the upper end opening part inside.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Waterproof film 2 ... Nonwoven fabric 3 ... Water-absorbing sheet 4 ... Bag bottom part 5 ... Both-side edge part 6 ... Sealing line 7 ... Upper end folding part

Claims (5)

Between the waterproof film 1 and the non-woven fabric 2 cut into a rectangular shape, a water-absorbing sheet 3 having a smaller width and having a water retention capacity of 15 g / 10 × 10 cm or more is overlapped so that the non-woven fabric 2 is inside. A water supply bag for cut flowers, which is formed by folding back from about a half position to form a bottom portion 4 and sealing both side edges 5 made of a waterproof film and a nonwoven fabric.
The water supply bag for cut flowers according to claim 1, wherein the water absorbent sheet 3 is a urethane resin foam sheet.
The water supply bag for cut flowers according to claim 2, wherein the urethane resin foam sheet is provided with a sealing wire 6 for preventing the contained water from flowing out.
The sealing line 6 of the urethane resin foamed sheet has a line width of 0.5 to 10 mm, and is provided in the lateral direction at an interval of 25 to 100 mm from the side end and / or the bottom of the foamed sheet. A water supply bag for cut flowers according to any one of the above.
The water supply bag for cut flowers according to any one of claims 1 to 4, wherein both side edges 5 are sealed so that the upper end opening 7 of the bag is folded inward.

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