JPH075341U - String for plant binding - Google Patents

Abstract

(57) [Summary] [Purpose] A plant bundling that does not break during the period when plant bundling is necessary, and whose strength decreases significantly after the period, and is easily cut by external force such as wind. Providing laces. [Structure] A string (A), which has the strength required for plant binding and has a large decrease in strength when it contains water, is used as a core, and this is covered with a flexible photodegradable synthetic resin layer (B). A string for plant binding.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a binding string used for attracting dwarfs of plants, attracting shelves, and the like.

[0002]

[Prior art]

 Conventionally, a string made of hemp or polypropylene is used for attracting dwarfing of tree branches and treetops, attracting shelves (hereinafter, collectively referred to as “plant attraction”) or maintaining self-sustaining seedlings (so-called seedling raising). It is used. However, even after the induction period or the seedling raising period, these strings remain in a tightly bound state, and therefore, when pruning the branches or treetops after fruit harvesting, these strings are individually removed. It was necessary to cut it, and it took a lot of labor. Also, regarding the seedlings, if the seedlings grow in a state where the strings are bundled, the string is stuck in the trunk, the seedlings are deformed and the commercial value is reduced, so it is necessary to cut them, but heavy work on the mountain slope is required. Many were very laborious. In particular, in recent years, the actual situation is that these operations are not adequately managed due to lack of manpower.

Regarding raising seedlings, a tape obtained by laminating a photo-disintegratable film with paper or a non-woven fabric has been proposed (Japanese Patent Laid-Open No. 63-112760). Water such as rainwater penetrated from the cross-section and the strength of the tape decreased, and the tape was cut during the seedling raising period, and the expected effect was not sufficiently obtained.

[0004]

[Problems to be solved by the device]

 The present invention has been made in order to solve the above-mentioned problems, and the string does not break during the plant attraction period or sapling raising period, and after the period expires, the string of water such as rainwater The purpose of the present invention is to provide a string for binding a plant that does not need to be manually cut or removed, because its strength is significantly reduced due to invasion into the soil and it is easily cut by external force such as wind.

[0005]

[Means for Solving the Problems]

 Therefore, the gist of the present invention is to use a string (A), which has the strength required for plant binding and has a large decrease in strength when it contains water, as a core, and is flexible, and is photo-degradable. It exists in a string for binding a plant, which is coated with a synthetic resin layer (B). Hereinafter, the present invention will be described in detail with reference to the drawings.

[0006] In Fig. 1, (A) is a large string that has the strength necessary for binding the plants and has a low strength when it contains water. When binding the plants, a load of about 2 kg to 100 kg is applied in the length direction of the string, so the string (A) needs to have a strength to withstand this load (not cut). In addition, after the photo-disintegrating synthetic resin is disintegrated, the string (A) needs to have a large decrease in strength when it contains water so that the string (A) is naturally cut by an external force such as wind.

[0007] The required strength of the string (A) when the string (A) is not containing water is, for example, about 5 to 10 kg for inducing apple dwarf and 2 to 6 kg for attracting grapes and kiwifruit on a shelf as a load in the length direction of the string. And about 5 to 100 kg for raising seedlings. As the string satisfying the above conditions, for example, a string or a string of a string or a string of paper or non-woven fabric made of chemical pulp such as ground wood pulp or kraft pulp is used. The thickness of the string is usually about 1 mm to 3 mm, but the present invention is not particularly limited to this.

Next, (B) in FIG. 1 is a photo-degradable synthetic resin layer having flexibility and covering the string (A). The photodegradable synthetic resin layer (B) is made of a composition of photodegradable synthetic resin. The photodegradable synthetic resin is made of a polymer of a monomer having a functional group that causes photodegradation and another monomer. Examples thereof include synthetic resins, resins in which such resins are mixed with other resins, and synthetic resins in which a photodegradation (photolysis) agent is added. Examples of the monomer containing a photodegradable functional group include ethylene-carbon monoxide copolymer, ethylene-vinyl ketone copolymer, ethylene-methyl vinyl ketone copolymer, ethylene-ethyl vinyl ketone copolymer, styrene- Examples thereof include vinyl ketone copolymers. Examples of the photodisintegrator include metal compounds such as dithiocarbamate metal salt, transition metal salt of organic acid, and benzophenone derivative.

Examples of the composition of the photodegradable synthetic resin include (1) a composition containing vinyl chloride resin, nitrile butadiene rubber and a plasticizer as main components (2) 1,2-polybutadiene, a thermoplastic resin and a filler. Composition as component (3) A composition containing a halogen-containing resin, a phthalic acid ester-based or epoxy-based plasticizer, and an iron compound as main components.

The photo-disintegrating synthetic resin layer (B) needs to have flexibility in order to maintain the function of binding, and the 100% modulus value is 200 kg / cm.²And the thickness is 10 to 500 μm. 100% modulus value is 200 kg / cm ² If the thickness is more than 500 μm or more, the string becomes hard and it is difficult to bind the strings, which is not preferable. On the other hand, if the thickness is less than 10 μm, the film may be broken due to bending of the string during binding, which is not preferable.

When the photo-disintegrating synthetic resin layer (B) does not have sufficient flexibility, the photo-disintegrating synthetic resin as described above may be added with a highly flexible rubber or plasticizer to provide flexibility. May be given. Further, other additives such as a stabilizer may be added to the photodegradable synthetic resin layer (B), if necessary. The photo-disintegration period of the photo-disintegrating synthetic resin layer (B) can be adjusted by adjusting the amount ratio of the components in the composition, the thickness of the layer, etc. in accordance with the tying period of the tying target.

As a method for coating the surface of the string (A) with the photodegradable synthetic resin layer (B), for example, a photodegradable synthetic resin film is slit into a tape having a width of several cm, and the string (A) is then cut. The spiral winding method is simple, but other methods such as applying a liquid, solution or dispersion liquid synthetic resin onto the string (A) may be used. For example, in the case of raising a seedling, the required disintegration period is 6 months, and a composition containing vinyl chloride resin, nitrile butadiene rubber, and a plasticizer as main components is formed into a film having a thickness of 100 μm by a calendar molding method. By slitting the tape with a width of 20 mm and spirally winding it on the paper string in a ½ superposition, the desired binding string can be obtained.

[0013]

[Effect of device]

 The plant tying string of the present invention binds plant branches, treetops and seedlings during the attraction period or sapling raising period without water intrusion into the string and the string is not broken, and the period has passed. After that, the string is easily cut by external force such as wind without manual removal work, and its utility value is extremely high.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a strap for binding a plant of the present invention. In the figure, (A) is a string having a strength necessary for plant binding and having a large decrease in strength when it contains water, and (B) is a photo-degradable synthetic resin layer having flexibility, and In the embodiment, a photo-degradable synthetic resin film is slit into a tape shape and spirally wound around the surface of the string (A).

Claims (2)

[Scope of utility model registration request] 1. A photo-degradable synthetic resin layer (B), which has a cord (A), which has a strength required for plant binding and has a large decrease in strength when it contains water, as a core, and which has flexibility. A string for binding a plant. 2. The string for binding a plant according to claim 1, wherein the core string is paper or non-woven fabric.