JPH10150858A - Side tape for agriculture and film for agriculture with side tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily manufacturable side tape for agriculture and an easily manufacturable film for the agriculture with the side tape. SOLUTION: This side tape 3 for the agriculture is in long length and is constituted of a thick part 4 and a thin part 5. For the thick part 4, thickness is 0.3-2mm, width is 10-50mm and holes 6 are pierced with fixed intervals. For the thin part 5, the thickness is thinner than the thick part 4 for 0.05 - and the width is in the range of 5-100mm. This film for the agriculture with the side tape is composed by depositing the thin part of the side tape 3 for the agriculture to at least one end 2 of the film 1 for the agriculture whose plane shape is polygonal to be a substrate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to agricultural side tapes and agricultural films with side tapes. More specifically, when the agricultural film is welded to at least one end of the agricultural film and used as a covering material such as a greenhouse, it is convenient for fixing to an aggregate such as a greenhouse or a strut with a string or the like. The present invention relates to an agricultural side tape and an agricultural film with the side tape to which the agricultural side tape is welded.

[0002]

2. Description of the Related Art Conventionally, when an agricultural film is used as a covering material for a greenhouse or the like, holes or eyelets (eyelets) are provided at regular intervals near an end of the agricultural film, and a string is passed through the hole. A method of fixing to aggregates, columns, etc. is adopted. Eyelets (holes) used to be metal,
It was later changed to one that does not use metal. When manufacturing a conventional agricultural film with holes, as shown in FIG. 2, the end of the base film 21 constituting the agricultural film is folded so as to be doubled along the length direction. A reinforcing tape 24 is sandwiched between the films, and a welded portion 27 is formed by a high-frequency sewing machine. Holes (eyelets) 26 are provided at regular intervals in the thickened portion. 27 has been adopted.

[0003]

However, according to the above-mentioned conventional method, a step of arranging a tape at an end of the film, a step of folding the end of the film across the tape,
Several steps are required, such as a step of welding the folded part with a high-frequency sewing machine, and a step of providing holes (eyelets) at regular intervals in the welded and thickened part, which is undeniably complicated. The present inventors have completed the present invention in view of such circumstances, and the objects are as follows. (1) To provide agricultural side tapes that can be easily manufactured. (2) To provide an agricultural film with side tape which can be easily manufactured.

[0004]

According to a first aspect of the present invention, there is provided an agricultural side tape comprising a long, thick portion and a thin portion. 3 ~ 2.0mm, width is 10 ~ 50mm, holes are drilled at regular intervals, the thin part of side tape is thinner than 0.05mm ~ thick part, the width is 5 ~ 100mm Agricultural side tapes are provided which are characterized by the scope.

According to the second aspect of the present invention, in the agricultural film in which the agricultural side tape is welded to at least one end of the base film having a polygonal planar shape, the thick portion of the agricultural side tape has a thickness. Is 0.3-2.0m
m, the width is 10-50mm, and holes are drilled at regular intervals, the thin part of the agricultural side tape is 0.05mm or more thinner than the thick part, the width is 5-100mm
And an agricultural film with a side tape, characterized in that a base film is welded to a thin portion.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The base resin constituting the agricultural side tape and the agricultural film with the side tape according to the present invention includes a vinyl chloride resin and an olefin resin. Examples of the vinyl chloride-based resin include polyvinyl chloride and a copolymer of vinyl chloride and a monomer copolymerizable therewith. Examples of the copolymerizable monomer include ethylene, propylene, (meth) acrylic acid, (meth) acrylic acid ester, and vinyl acetate, but are not limited thereto. The amount of the copolymer component is preferably set to 20% by weight or less.

In the production of agricultural side tapes and agricultural films with side tapes, the base resin is colored when exposed to high temperatures during production, or is deteriorated by being exposed outdoors for a long period of time. For the purpose of preventing deterioration, the vinyl chloride resin of the substrate usually includes various resins such as a plasticizer, a heat stabilizer, an antifogging agent, a lubricant, an antioxidant, an ultraviolet absorber, a light stabilizer, and a fungicide. Additives are compounded.

Examples of the plasticizer include phthalate plasticizers such as dioctyl phthalate and butylbenzyl phthalate; phosphate plasticizers such as tributyl phosphate;
Aliphatic monobasic acid ester plasticizers such as butyl oleate; aliphatic dibasic acid ester plasticizers such as dibutyl adipate; dihydric alcohol ester plasticizers such as diethylene glycol dibenzoate; Acid ester plasticizers and others. The plasticizer is not limited to those exemplified. The mixing amount of these plasticizers depends on the base resin 1
It is selected in the range of 1 to 70 parts by weight with respect to 00 parts by weight.

Examples of the heat stabilizer include metal soap-based stabilizers, di-n-butyltin-based stabilizers, organotin-based stabilizers, and lead-based stabilizers. Among them, metal soap stabilizers, di-
Preference is given to n-butyltin stabilizers, organotin stabilizers and the like. Specific examples of the metal soap-based stabilizer include calcium stearate, barium stearate, and zinc stearate, and specific examples of the organotin-based stabilizer include di-n-octyltin-based stabilizer. The compounding amount of these heat stabilizers is selected in the range of 0.5 to 5.0 parts by weight based on 100 parts by weight of the base resin.

What is used as an antifogging agent is a surfactant, and specifically, sorbitan monostearate, palmitate, polyoxyethylene (2 to 2)
4 mol addition) sorbitan monostearate and the like. The compounding amount of these anti-fog agents depends on the base resin 10
It is selected in the range of 0.5 to 3.0 parts by weight with respect to 0 parts by weight.

Examples of the antioxidant include a phenolic antioxidant, a sulfuric antioxidant, and a phosphorus antioxidant. Specific examples of phenolic antioxidants include
2,6-di-t-butyl-p-cresol, butylated hydroxyanisole (BHA), 2,6-di-t-butyl-4-ethylphenol, stearyl-β- (3,5
-Di-t-butyl-4-hydroxyphenyl) propionate, 4,4'-thiobis (3-methyl-6-t-butylphenol), 3,9-bis [1,1-dimethyl-
2- {β- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy} ethyl-2,4
8,10-tetraoxaspiro {5,5} undecane,
1,1,3-tris (2-methyl-4-hydroxy-5
-Butylphenyl) butane and the like.

Specific examples of the sulfur-based antioxidant include dilauryl-3,3'-thiodipropionate, dimyristyl-3,3'-thiodipropionate, distearyl-
3,3'-thiodipropionate and the like. Specific examples of the phosphorus antioxidant include trisphenyl phosphite, diphenyl isodecyl phosphite, phenyl diisodecyl phosphite, 4,4′-butylidene-
Bis (3-methyl-6-t-butylphenylditridecyl) phosphite, tris (nonylphenyl) phosphite, tris (mono and / or dinonylphenyl)
Phosphite, tris (2,4-t-butylphenyl)
Phosphite and the like. The antioxidant is not limited to those exemplified. The compounding amount of these antioxidants is 0.1 to 100 parts by weight of the base resin.
It is selected in the range of 1 to 1.0 part by weight.

Examples of the ultraviolet absorber include a benzophenone ultraviolet absorber, a benzotriazole ultraviolet absorber, a salicylic acid ultraviolet absorber, and a cyanoacrylate ultraviolet absorber. Examples of the light stabilizer that can be blended include a hindered amine light stabilizer. Among them, a benzophenone-based ultraviolet absorber and a benzotriazole-based ultraviolet absorber are preferable. The amount of these ultraviolet absorbers and light stabilizers is 0.0 to 100 parts by weight of the base resin.
It is selected in the range of 5 to 3.0 parts by weight.

In order to make a vinyl chloride resin into a film,
Various resin additives such as the above plasticizers, stabilizers, antifogging agents, lubricants, antioxidants, ultraviolet absorbers, light stabilizers, and antifungal agents are mixed with the base resin, and mixed with a super mixer, a Banbury mixer, etc. After kneading, it can be produced by a usual film forming method such as an extrusion molding method or a calender molding method, but it is particularly preferable to produce by a calender molding method. The thickness of the film can be selected in the range of 0.03 to 0.2 mm.

Examples of the olefin resin include a low-density polyethylene and a copolymer of ethylene as a main component and a monomer copolymerizable therewith. Examples of copolymerizable monomers include propylene, 1-butene, 1-hexene, 1-octene, 4-methyl-1-pentene, (meth) acrylic acids, (meth) acrylic esters, and vinyl acetate. No. The amount of the copolymer component is preferably set to 20% by weight or less.

Various resin additives such as a heat stabilizer, an antifogging agent, a lubricant, an antioxidant, an ultraviolet absorber, a light stabilizer, and a fungicide can be added to the olefin resin. The types of various resin additives that can be added are the same as those that can be added to the vinyl chloride resin. In order to form an olefin-based resin into a film, the above-mentioned various resin additives can be blended with the base resin, and the film can be produced by a usual film forming method. However, it is particularly preferable to produce the film by an inflation molding method. The thickness of the film is 0.03-0.2mm
You can choose from a range.

The agricultural side tape has an elongated shape including a thick portion and a thin portion, and holes are formed in the thick portion at regular intervals. The agricultural side tape is used by being welded to an end of an agricultural film. A string is passed through a hole formed in a thick portion of the agricultural side tape when the agricultural film with the side tape is fixed to an aggregate or a support. If the thickness of the side tape is too thin, the strength is not sufficient if it is too thin, and if it is too thick, it is inconvenient when handling bulky agricultural films. Thick part thickness is 0.3 ~
The range is 2.0 mm, particularly preferably 0.5 to 1.0 mm. If the width of the thick portion is too small, the strength is not sufficient, and if the width is too wide, it is inconvenient when handling bulky agricultural films. The width of the thick part is in the range of 10 to 50 mm, particularly preferably in the range of 20 to 30 mm.

If the thickness of the thin portion of the side tape is too small, the strength of the portion to which the base film is welded is not sufficient, and if it is too thick, it is inconvenient when handling the bulked agricultural film. The thickness of the thin portion is in the range of 0.03 mm or more and thinner than the thick portion, particularly preferably in the range of 0.05 mm or more and thinner than the thick portion. If the width of the thin portion is too small, the welding area is too small and the strength is not sufficient, and if the width is too wide, the welding operation is complicated, which is not preferable. The width of the thin part is 5
~ 100mm, particularly preferably 10 ~ 50mm
Range.

The diameter of the hole formed in the thick portion of the side tape can be selected in the range of 5 to 20 mm according to the width of the thick portion. The interval at which the holes are provided depends on the use of the agricultural film with side tapes and the location of the film,
The interval can be 0 to 100 cm, preferably 30 to 60 cm, and the interval can be used as a scale for inspection when cutting a product film into a desired length.

In order to form a hole in a thick portion of the agricultural side tape, it is preferable to use a method of punching with a punching blade immediately after extrusion molding. A long agricultural side tape with a hole drilled in a thick part can be wound into a roll and stored, transported, etc. can be handled. Are overlapped and welded together with a high-frequency sewing machine, whereby the agricultural film with side tape according to the second invention can be obtained.

The agricultural film with a side tape according to the second invention is usually formed in a polygonal shape such as a triangle, a quadrangle or a pentagon. Depending on the application of the agricultural film with side tapes and the position where the film is arranged, the long tape may be welded to both ends in the length direction of the rectangular base film, and the planar shape is one of the square base film, It can be welded on two, three or four ends. The welding to the end may be the entire length of the end or a part of the end. After the side tape is welded to the base film, it is folded to a certain length until it is actually used. When the base film and the agricultural side tape are combined with the same type of resin, it is convenient to collect and regenerate after use.

The agricultural film with the side tape according to the second invention can be used as a covering for a ceiling of a greenhouse, a covering for a side wall, a curtain film and the like. Moreover, since the agricultural side tape having a hole (eyelet) drilled in at least one end is welded, it is easy to use the hole drilled in the side tape to make an aggregate, a strut, etc. of a greenhouse. Can be fixed with a string.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings, but the present invention is not limited to the following description unless it exceeds the gist. FIG. 1 is a perspective view of an example of an agricultural film with a side tape according to the present invention, and FIG.
FIG. 1 is a perspective view of an example of a conventional agricultural film.

The agricultural film with a side tape according to the present invention shown in FIG. 1 is obtained by welding an agricultural side tape 3 to an end 2 of a base film 1. The agricultural side tape 3 is composed of a thick part 4 and a thin part 5, and holes (eyelets) 6 are formed in the thick part 4 at regular intervals. The thin portion 5 is welded by overlapping the end portion 2 of the base film to form a welded portion 7.

[0025]

As described above, the present invention has the following particularly advantageous effects, and its industrial utility value is extremely large. 1. The agricultural side tape according to the present invention has a simple manufacturing process, and can be handled by being wound into a roll. 2. INDUSTRIAL APPLICABILITY The agricultural side tape according to the present invention can conveniently use holes (eyelets) drilled at regular intervals in a thick portion thereof as a scale for inspection. 3. Agricultural film with side tape according to the present invention,
The process for producing this is less than the conventional agricultural film, and the production is simple. 4. Agricultural film with side tape according to the present invention,
When the base film and the agricultural side tape are made of the same type of resin, it is convenient because it is not necessary to separate them when used and recovered and recycled.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of an agricultural film according to the present invention.

FIG. 2 is a perspective view of an example of a conventional agricultural film.

[Explanation of symbols]

 1, 21: base film 2: end of base film 3: agricultural side tape 4: thick part 5: thin part 6, 26: hole 7, 27: welded part 24: reinforcing tape

Claims (3)

[Claims] An agricultural side tape comprising a long, thick portion and a thin portion, wherein the thick portion of the agricultural side tape has a thickness of 0.3 to 2.0 mm and a width of 10 to 10 mm.
It is 50mm, holes are drilled at regular intervals, the thin part of the agricultural side tape is more than 0.05mm thicker than the thick part, and the width is 5-100mm. And agricultural side tape. 2. An agricultural film obtained by welding an agricultural side tape to at least one end of a base film having a polygonal planar shape, wherein a thick portion of the agricultural side tape has a thickness of 0.3 to 0.3. 2.0mm, width 10-50mm
And, and holes are drilled at regular intervals, the thin part of the agricultural side tape is thinner than the thick part more than 0.05mm ~ thick part, the width is in the range of 5 ~ 100mm,
An agricultural film with a side tape, wherein a base film is welded to a thin portion. 3. The agricultural film with side tapes according to claim 2, wherein the resins constituting the base film and the long tape are of the same kind.