KR101334678B1 - Method for manufacturing bale silage film - Google Patents

Abstract

The present invention relates to a method for manufacturing bale silage films and, more specifically, to a method for manufacturing bale silage films which facilitates packing the bale silage, suppresses tearing, protects the bale silage from injurious insects or harmful wild animals in order to prevent the bale silage from being decomposed by secondary fermentation and to obtain high quality bale silage films. The bale silage film according to the present invention is partially relaxed so that the bale silage film can be easily reeled around the bale silage without additional extension, and has enhanced flexibility so that sealing can be facilitated, and suppresses tearing of the film, and protects the bale silage from harmful wild animals such as birds or rodents even when the bale silage film is left in the open air by including a wild animal repellent inside the film so that silage can be prevented from being decomposed by the secondary fermentation, and obtains highly nutritious bale silage by making sericite maintain repellent effects.

Description

Method for manufacturing film for packing silage {Method for manufacturing bale silage film}

The present invention relates to a method for producing a film for baling silage, and more particularly, to facilitate packing of bale silage, to prevent tearing and to protect bale silage from pests or harmful wild animals, so that silage decays by secondary fermentation. It is related with the manufacturing method of the film for packing silages which makes it possible to obtain a high quality packing silage by preventing it from becoming.

The demand for higher quality livestock meat has increased due to the importation of agricultural and livestock products, and the interest in stabilizing supply while raising the quality of silage, which is indispensable for quality meat quality. .

Conventionally, as a method of manufacturing and storing silage, concrete silos have been used a lot, but construction costs are high, and a lot of effort and time are required for work such as transporting harvested grass to silos and putting them in the upper part of high silos. As a result, large concrete silos are used by some large farms but are not available in small farms.

As a way to solve this problem, the packing silage method was introduced, and the packing silage is a method of vacuum-saving fermenting grasses, grasses and feed crops with high moisture content, and losing nutrients from crops such as barley, grasses and rice straw that have been harvested. In order to minimize the water content within 24 hours to lower the water content to 60 ~ 70% and then add fermentation additives and wrap it in several layers of round white vinyl (packing), packed and fermented.

These bale silages can be stored as quickly as weather-influenced hay, and can be stored quickly, saving labor and making work more efficient and lowering production costs. It is a trend that is widely used in agricultural and livestock prices.

In the pre-production of the packing silage, the crops are harvested, cut, pressed, and tied to the crops by a certain amount of rope so that baling is performed smoothly.

Afterwards, in order to prevent the loss of nutrients from occurring during the sealing of the crops stored in the bales, the seals are minimized to minimize the oxygen so that the lactic acid fermentation proceeds in the bales. When oxygen is removed from the bacteria, basic microorganisms such as acetic acid bacteria and lactic acid bacteria are actively generated, and acidity (pH) is lowered to increase the storage capacity of the bale silage.

However, since the bale silage is often piled on rice fields or fields, it is easy to tear the packaging film due to protrusions on the bottom of the yard or by rodents such as wild birds or rats, and thus air flows into the bale silage. There is a problem that silage is corrupted by aerobic microorganisms.

In Korean Patent Publication Nos. 0974071 and 1019465, warp yarns having two thicknesses of 350 to 450 deniers are disposed as polyethylene yarns, and zig-zags connecting yarns having one thickness of 350 to 450 deniers as polyethylene yarns between the warp yarns. Disclosed is a network for a wrapping lapping silo formed by weaving into a mesh.

The invention has the advantage that the work is simple to bind before weeding and drying the weeds, and it is tough against the weight of the yarn, the production rate is high and the price competitiveness is very good, but it is not fermented because it is aerated outside It is susceptible to decay and does not provide a good quality feed, but only convenience of transportation.

Although the packaging for packing silage has been developed as described above, the development of technology for maintaining a stable state in order to manufacture a nutritious and high quality feed is still insufficient.

The present invention is to solve the above problems, can be easily used as a packaging medium of the packing silage to ensure a stable packaging, to maintain a sealed state during storage and to prevent the film from being torn by the external environment of good packing To get silage.

In order to solve the above problems, the present invention comprises the steps of preparing a mixture by mixing a synthetic resin and a repellent and mica to avoid birds, rodents, mammals or pests; Molding the mixture to prepare a film; It provides a method for producing a film for packing silage comprising; and stretching the film and then partially relaxing.

At this time, the repellent is preferably 0.01 ~ 1.00 g / ㎡ of the packing silage film is mixed, 1 ~ 5 g / ㎡ of the bale silage film is preferably mixed.

In addition, it is preferable to add sodium silicate dispersant to the mixture 0.1 to 1.0 g / m 2 of the packing silage film, and the binder is a mixture of 97.0 to 99.5% by weight acrylic resin and 0.5 to 3.0% by weight reactive surfactant to the mixture It is preferable to add 0.5-2.0 g / m <2> of the film for packing silage.

In addition, a primer in which 100 parts by weight of water and a water-dispersed polyurethane resin, a water-dispersed polyester resin, or a mixed resin of 5 to 20 parts by weight thereof are mixed on the surface of the film for packing silage. It is preferable that the layer is formed to a thickness of 80 to 100 nm, the primer layer is 5 to 10 parts by weight of an epoxy-based curing agent, oxazoline-based curing agent or mixed curing agent based on 100 parts by weight of water and 0.1 to 5.0 parts by weight of anionic surfactant It is more preferable to further contain a part.

In addition, by adding an auxiliary film on one surface of the film for packing silage, filling the gas in the space between the film for packing silage and the auxiliary film and then fusion to each other at a predetermined interval spaced vertically and horizontally, the gas is filled Preferably, the space is repeatedly formed into separate sections of a predetermined size, and the gas is nitrogen gas, carbon dioxide gas, or ammonia gas, and the auxiliary film is more preferably a heat shrinkable material with lower shear strength than the film for packing silage. Do.

In addition, it is preferable to form a multi-layer structure by stretching the film produced by molding a synthetic resin and partially relaxing and laminating one or two layers on the wrapping silage film.

delete

The packing silage film according to the present invention is partially relaxed, so that the wrapping silage can be easily wound on the packing silage without further stretching at the time of packaging, and excellent flexibility allows easy sealing work and suppresses tearing of the film.

In addition, the film contains harmful animal repellent, which prevents the silage from spoiling by secondary fermentation, protecting the silage from harmful wild animals such as birds and rodents, even if it is stored outdoors. By holding it, you can obtain a nutritious, high quality bale silage.

In addition, the polymer easily adhesive primer layer improves the adhesion between the films to maintain a tightly sealed state, the anti-corruption gas filled in the air cap has the effect of further improving the quality of the silage while reducing the breakage of the film.

The packing silage film according to the present invention is added to the synthetic resin by adding a repellent to avoid harmful animals damaging the film for packing silage such as birds, rodents, mammals, pests, and the mica to continuously maintain the repellent effect of the repellent It is produced by a process of forming and partially relaxing the stretched film.

The synthetic resin may be polyethylene, polypropylene, polybutylene, ethylene-vinyl acetate copolymer, vinyl chloride, polyester, acryl, polyamide, and the like, but linear low density polyethylene resin, or linear low density polyethylene and ethylene-vinyl acetate Since the film made of the mixed resin with the copolymer is excellent in shear strength and flexibility, it is preferable in that the film is prevented from being damaged by protrusions such as stubble, stones, etc. at the bottom of the field and is easy to seal.

When the linear low density polyethylene is mixed with the ethylene-vinyl acetate copolymer, the linear low density polyethylene: ethylene-vinyl acetate copolymer can be used to give the flexibility of the ethylene-vinyl acetate copolymer without lowering the shear strength of the linear low density polyethylene. It is preferable to mix in 50-80: 20-50 weight part.

As the repellent, it is possible to use a known drug that is commercially available and has low toxicity to humans and livestock, but peppermint oil containing a lot of menthol effective for birds such as pigeons, magpies, pheasants and ducks ), Eucalyptus oil with excellent antibacterial and antiviral properties and bronchial dilatation; Rodents, such as rats and squirrels, and mammals such as wild boars, elk, cats, and snow hats, such as capsaicin and limonene avoided by animals; Pests and mites include coniferous refined oils such as organic phosphorous compounds, carbamate compounds, cedarwood oils containing tuyopsene, and permetriins with insecticidal functions. Pyrethroid compounds such as these; Bacteria, fungus, lemongrass oil, aromatic lavender oil, bactericidal triclosan and isothiazoline compounds and antibacterial zinc pyrithione Is preferable.

It is preferable that 0.01-1.00 g / m <2> of a film is added, and, as for the addition amount of the said repellent agent, it is more preferable that 0.05-0.50 g / m <2> is added.

If the addition amount of the repellent is less than 0.01 g / ㎡, the repellent effect of pests, harmful wild animals or bacteria is not sufficient, and if the amount of the repellent exceeds 1.00 g / ㎡, the surface of the formed film is sticky, workability is lowered and manufacturing cost increases there is a problem.

The repellent has a fragrance (性 香), and the repelling effect gradually decreases over time. To maintain the repelling effect for a longer time, a mica powder having porosity is added to the synthetic resin.

The mica is approximately 60% silicon dioxide (SiO ₂ ), aluminum oxide (Al ₂ O ₃ ) 10%, potassium oxide (K ₂ O) 9.0%, magnesium oxide (MgO) 2.9%, ferric oxide (Fe ₂ O ₃ ) 1.8 %, Calcium oxide (CaO) 0.1%, sodium oxide (Na ₂ O) 0.1% and other water molecules, the oxygen atom supporting the potassium atom as its peak and the aluminum, silicon and other metals and hydrogen based thereon Atoms such as these bond to form an extremely stable crystal structure having a metal cation on the surface, and has a structure in which oxygen and potassium atoms are irregularly substituted in this basic crystal structure.

Cicada is a natural inorganic material that has a molecular structure that is favorable for adsorption and has a porous structure, which is good for deodorization and atmospheric purification as an adsorbent.

When the mica powder is added to the synthetic resin mixed with the repellent, the repellent component is adsorbed into the porous inside of the mica, and the repellent adsorbed inside the mica is gradually released from the porous interior of the mica during packing of bale silage, thereby damaging the film for packing silage. The packing silage film can be protected from harmful animals for a long time.

The addition of the mica powder is preferred to first mix the repellent and the mica powder so that the repellent is adsorbed into the porous structure of the mica, and then mixed with the synthetic resin, the addition amount of the mica is preferably 1 to 5 g / ㎡ of the film .

If the amount of the mica powder is less than 1 g / m 2, the release sustaining effect of the repellent is not sufficient, and when the amount of the mica powder is more than 5 g / m 2, the strength of the film is reduced by the mica powder particles.

The particle size of the mica powder is preferably 1 ~ 10 ㎛ and the specific surface area of BET (Brunauer-Emmet-Teller) is 0.5 ~ 1.0 m 2 / g.

The BBT specific surface area is described in the Journal of the American Chemical Society, Vol. 60, page 309, February 1938 and measured according to the BET method corresponding to ISO International Standard 5794/1 (Appendix D), Corresponds to the total specific surface area of the mica powder.

If the size of the biotite powder is more than 10 ㎛ or less than 0.5 m 2 / g surface area of the biotitanium powder is difficult to achieve a uniform distribution during the melt kneading step of film production, the mechanical strength of the film may be lowered, If the surface area is less than 1 μm or the BT surface area is more than 1.0 m 2 / g, the porous structure of the mica is much damaged, making it difficult to sufficiently adsorb the repellent.

A dispersant may be added to the synthetic resin so that the mica powder is uniformly dispersed in the synthetic resin, and the amount of the dispersant added is preferably 0.1 to 1.0 g / m 2 of the film.

As the dispersant, sodium silicate is preferable, and sodium silicate exhibits very strong basicity so that the mica powder does not aggregate with each other.

In addition, a binder may be added to the synthetic resin in order to bind the biotite powder particles and the synthetic resin firmly, and the binder is coated on the surface of the biotite powder particles to facilitate binding with the synthetic resin, acrylic resin 97.0 It is preferably prepared by adding 0.5 to 3.0% by weight of the reactive surfactant to 99.9% by weight.

The acrylic resin is widely used as an adhesive binding agent mainly composed of pure acrylic ester monomers, including methyl acrylate (methylacrylate), the binder added to the reactive resin to the acrylic resin when mixing the mica powder particles and the synthetic resin It will function as an adhesive.

Anionic surfactants, cationic surfactants or nonionic surfactants may be used as the reactive surfactants, but are preferably anionic surfactants in consideration of reactivity with mica, and an acrylic resin containing anionic surfactants. By using ionic bonds selectively with cations on the surface of the biotite can increase the binding force between the biotite and the synthetic resin.

As the reactive surfactant, for example, alkylbenzene sulfonic acid, alpha-olefin sulfonate, sodium lauryl ether sulfate, ammonium lauryl ether sulfate lauryl ether sulfate), sodium diisooctyl sulfosuccinate or mixtures thereof.

Preferably, the binder is added in an amount of 0.5 to 2.0 g / m 2 of the film. When the amount is less than 0.5 g / m 2, the bonding strength between the mica and the synthetic resin decreases, so that the mechanical strength of the film for packing silage manufactured by the mica acting as an impurity is increased. It may be lowered, and in excess of 2.0 g / m 2, the synergistic effect of the bond is insignificant and economically undesirable.

In addition, preservatives such as paraben, ethylenediaminetetraacetic acid (EDTA), stearyl polyether monoglyceride, stearyl polyether diglyceride, stearyl amino polyether It is also possible to add an antistatic agent such as) or a known weathering agent, ultraviolet absorber, antioxidant, heat stabilizer, antiblocking agent, colorant, lubricant, or the like as necessary.

The method of forming the film may be all methods such as solution casting, melt compression, melt extrusion, bubble blowing, calendering, etc., but the bubble blowing molding method is most preferred.

The bubble blowing molding method is advantageous in producing a film for packing silage having a thickness of 100 to 500 μm which is required in the present invention during drawing operation, and the film of the present invention is important for tissue stability and uniformity. In the blow molding process, the cooling rate may be uniformly adjusted by air, thereby obtaining stable and uniform film properties.

The molded film is partially relaxed after being stretched to relax a part of the elastic deformation component, and it is preferable to perform stretching and relaxing work immediately after film molding in order to be able to use the film later in the partially stretched state.

The stretching is stretched beyond the yield point and the elongation at this time is about 100 to 300%, the relaxation is preferably maintained at an elastic strain of 30 to 50% to have a restorability or elastic deformation.

The elastic deformation has the advantage of reducing the force required to form the elastic load required for packaging by the size of the elastic deformation held in the film.

The elastic strain 30% represents the minimum amount of elastic deformation to effectively package the bale silage without applying an additional excessive stretching load when wrapping the bale silage, 50% elastic strain 50% to damage the support core that the film is stored It is the maximum amount which can prevent and keep the film from being stretched during storage.

As described above, the thickness of the stretched and relaxed baling silage film is preferably 100 to 500 μm. If the thickness is less than 100 μm, the shear strength is lowered and easily torn by protrusions such as stubs and stones. It is not preferable because the workability is lowered due to lack of flexibility.

The packing silage operation is a process of sealing the silage crops by wrapping the packing silage film several times, and sealing should be made to block the silage from the outside air to prevent corruption during the fermentation of the silage.

Therefore, the higher the adhesion between the films is advantageous for a firm sealing, for this purpose it is possible to form a polymer adhesive layer on the surface of the film for packing silage.

The primer layer is composed of a water-dispersed polyurethane resin, a water-dispersed polyester resin or a mixed resin of 5 to 20 parts by weight in 100 parts by weight of water, the resin is a glass transition temperature (Tg) of 60 ~ 80 ℃. It is preferable to have, and the adhesion, heat resistance and moisture resistance of the primer layer are maximized at the above glass transition temperature.

The primer layer may include an epoxy-based curing agent, an oxazoline-based curing agent, or a mixed curing agent thereof and an anionic surfactant, and the epoxy-based curing agent mainly provides adhesion to the film surface for packing silage. The oxazoline-based curing agent has an effect of improving moisture resistance, and anionic surfactants are used to increase the wettability of the film and to uniformly apply the resin to the film surface for packing silage.

The amount of the curing agent and the anionic surfactant is preferably 5 to 10 parts by weight based on 100 parts by weight of water constituting the primer layer and 0.1 to 5.0 parts by weight of the anionic surfactant.

The coating layer thickness of the primer layer is preferably from 80 to 100 nm in terms of coating properties, adhesion, adhesion holding properties, economics, and the primer layer formed as described above has a surface adhesive strength of at least 95% with the back surface of the film for packing silage. It exhibits the characteristic that the adhesive force after 90 hours has passed 90% or more under the conditions of the temperature of 65 degreeC, and 95% of humidity.

In addition, the present invention pads the auxiliary film on one surface of the packing silage film and fills the gas in the space between the packing silage film and the auxiliary film, and then fuses them at positions spaced apart at regular intervals vertically and horizontally, thereby filling the gas. It is also possible to form a plurality of air caps so that the space is divided into discrete compartments of a certain size.

Since the packing silage is mainly made after the harvesting of the paddy field crops in autumn, the fermentation of the silage may not proceed smoothly due to cold outside air, but if the silage material is packaged with the air cap formed film as described above, the air cap is insulated. Because the effect is suppressed the internal temperature decrease, fermentation can proceed smoothly.

In addition, the air cap can also be expected to reduce the breakage of the film by buffering between the silage and the bottom protrusion during loading.

As described above, the film can be prevented from breaking during packing silage by adjusting the elastic strain and thickness of the film, adding repellent and mica, and forming an air cap, but it does not prevent the film from being completely damaged. .

Therefore, if the film is damaged while the packing silage is filled and air is introduced into the packing silage, there is a need for a method for preventing silage from being decayed by aerobic microorganisms.

To this end, the gas filled in the air cap is filled with nitrogen gas, carbon dioxide gas or ammonia gas that can prevent the corruption of the silage, and the auxiliary film at this time is a film of heat-shrinkable material having a lower shear strength than the film for packing silage Preference is given to using.

In this case, the packaging operation is carried out so that the auxiliary film to the inside of the packaging, the packaging silage film toward the outside of the packaging so that the auxiliary film in contact with the silage material when packaging the silage material.

When silage material is fermented, heat is generated. For example, when fermentation of glucose in crop material produces alcohol and carbon dioxide, 27.9 kW of heat is generated per molecule of glucose, which is in contact with the inner surface of the package, that is, silage. It is delivered to the air cap of the film to expand the gas while shrinking the heat shrinkable film.

Accordingly, the pressure in the air cap is increased and the auxiliary film with low shear strength is ruptured by the increased pressure, so that the anti-corruption gas filled in the air cap fills the packing silage package.

Moreover, since silage material is cut with a blade, grass, grass, rice straw, etc., and has a sharp and sharp shape, the pressure-enhanced air cap is more easily broken by the tip of the silage material that is received inside and contacts.

Since the packing silage film of the present invention has an elastic deformation rate of 30 to 50%, even if the packing silage film is damaged, the anti-corruption gas filled in the silage package is leaked to the outside due to the compression of the film by the elastic force. In addition, it is possible to prevent the air from the outside air into the packing silage.

In addition, the anti-corrosive gas filling the packing silage package prevents the spoilage of silage by inhibiting the respiration of aerobic decay bacteria by inhibiting the respiratory action, and in particular, ammonia gas softens the silage of rice straw, etc. It helps the livestock to grow through a sufficient supply of crude protein by allowing the livestock to absorb more of the nutrients in the diet and by supplementing the nitrogen that is lacking in silage.

The packing silage film manufactured as described above may be manufactured in a monolayer, but may be manufactured in a multilayer structure in which the single layer is fused and laminated in two to three layers.

In this case, it is preferable that the multilayered film uses the film containing the repellent described above as the outer layer and the film containing the repellent does not contain the repellent, in which case the repellent is not directly contacted by silage in the package. Since no beneficial repellents are contained in the silage, safety can be ensured for livestock feed.

Hereinafter, the present invention will be described in more detail with reference to the following examples, comparative examples and test examples.

It is to be understood, however, that the invention is not to be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Will be apparent to those skilled in the art to which the present invention pertains.

<Examples 1-4 and Comparative Examples 1-3>

Low density polyethylene, linear low density polyethylene, low density polyethylene and ethylene-vinyl acetate copolymer mixture, or linear low density polyethylene and ethylene-vinyl acetate copolymer mixture, algae repellent peppermint oil and rodent repellent limonene (mint oil: limonene = 1: 1 weight ratio) and Cicada powder having an average particle diameter of 5 μm and a BT specific surface area of 0.8 m 2 / g was mixed in the ratio of Table 1 below, in addition to paraben preservatives, stearyl polyether monoglyceride antistatic agents, weathering agents, ultraviolet absorbers, and antioxidants. , A small amount of heat stabilizer, antiblocking agent, colorant and lubricant were added.

The mixture of the film resin, repellent, mica and other additives was molded into a film by bubble blowing, stretched to 200% elongation immediately after molding, and relaxed to maintain 40% elastic strain.

The thickness of the bale silage film prepared as described above was 300 μm, which was wound around the support core and stored.

Film resin Repellent Blending Amount
(g) Cicada Blend
(g) Repellent content of the film
(g / m 2) Cicada content of the film
(g / m 2) Kinds Amount
(Kg) Example 1 Low density polyethylene 1000 800 8000 0.25 3.5 Example 2 Linear low density polyethylene 1000 800 8000 0.24 3.5 Example 3 Low Density Polyethylene /
Ethylene-Vinyl Acetate Copolymer 750 /
250 800 8000 0.22 3.5 Example 4 Linear Low Density Polyethylene /
Ethylene-Vinyl Acetate Copolymer 750 /
250 800 8000 0.23 3.5 Comparative Example 1 Linear Low Density Polyethylene /
Ethylene-Vinyl Acetate Copolymer 750 /
250 0 8000 0 3.5 Comparative Example 2 Linear Low Density Polyethylene /
Ethylene-Vinyl Acetate Copolymer 750 /
250 4500 0 1.29 0 Comparative Example 3 Linear Low Density Polyethylene /
Ethylene-Vinyl Acetate Copolymer 250 /
750 800 8000 0.24 3.5

<Example 5>

The film of Example 4 was made into an outer layer, and the film of Comparative Example 1 was made into an inner layer, and laminated and fused to prepare a film for packing silage having a two-layer structure.

<Example 6>

In Example 4, to the mixture of the film resin, repellent, mica and other additives, sodium silicate as a dispersant and a binder in which 98% by weight of the acrylic resin and 2% by weight of the reactive surfactant are mixed, and formed, stretched and The film for packing silage was relaxed to prepare a film for packing silage, and the packing was performed in the same manner as in Example 4 except that sodium silicate was 0.5 g / m 2 and the binder included 1.0 g / m 2 in the prepared packing silage film. A film for silage was prepared.

&Lt; Example 7 >

A resin composition, in which 10 kg of a mixed resin of a water-dispersed polyurethane resin and a water-dispersed polyester resin, having a glass transition temperature of 70 ° C. to 100 kg of water was mixed, was applied to the surface of the wrapping silage film prepared in Example 4 A film for packing silage was prepared in the same manner as in Example 4 except that a 90 nm-thick polymer easily adhesive primer layer was formed.

&Lt; Example 8 >

The film is packed with a polyester film having a lower shear strength than that of the wrapping silage film prepared in Example 4 and is heat-shrinkable on one surface of the wrapping silage film, and filled with ammonia gas in the space therebetween, and then the space is 2 × 2. A film for packing silage was prepared in the same manner as in Example 4, except that a plurality of air caps were formed by heat-bonding in the form of a net so as to be repeatedly divided into cm (width × length) sizes.

&Lt; Comparative Example 4 &

In Example 4, a film for packing silage was manufactured in the same manner as in Example 4, except that the film was not relaxed after stretching.

<Test Example>

The rice straws to which lactic acid fermentation additives were added were wrapped and packed in a film for packing silage prepared in Examples 1 to 8 and Comparative Examples 1 to 4 to be completely sealed.

At this time, it was confirmed whether the hole occurred in the film by the fine straw, and if there was a hole, the hole was sealed with a tape, and the bale silage thus prepared was left in the paddy field for 3 months.

Then, the state of the bale silage was observed and the results are shown in Table 2 below.

When sealed After 3 months left Sealing work ^{Note 1 )} Hole Generation ^{Note 2 )} Hole Generation ^{Note 2 )} Silage Corruption ^{Note 3 )} Example 1 ○ ○ ○ ○ Example 2 ○ ○ ○ ○ Example 3 ○ ○ ○ ○ Example 4 ○ ○ ○ ○ Example 5 ○ ○ ○ ○ Example 6 ○ ○ ○ ○ Example 7 ○ ○ ○ ○ Example 8 ○ ○ ○ ○ Comparative Example 1 ○ ○ × × Comparative Example 2 △ ○ ○ ○ Comparative Example 3 × △ ○ ○ Comparative Example 4 ▲ ○ △ △ Note 1) ○: Easily sealed, △: Difficult to seal, ▲: Sealing requires a lot of force, ×: Film is torn during sealing
Note 2) ○: No holes, △: Some holes, X: Multiple holes
Note 3) ○: No corruption, △: Some corruption, ×: Mostly corrupt

Looking at the results of Table 2, Examples 1 to 8 according to the present invention was able to perform the sealing operation easily because the film is not flexible and non-sticky, no packing occurs during the sealing operation and after standing for 3 months Silage did not decay was able to obtain a high quality livestock feed.

In particular, in the case of Example 8, the silage after leaving for three months was found to be very soft compared to other groups.

In Comparative Example, Comparative Example 1, which contained no repellent, had many holes in the film due to algae and rodents for three months, which caused most of the silage to rot due to air.

In the case of Comparative Example 2 in which too much repellent was mixed, the sealing was difficult because the film surface was sticky. The film was torn and some holes occurred during the operation.

In addition, Comparative Example 4, which did not relax after forming and stretching the film, took a lot of force to seal due to lack of restorability and elastic deformation. Corruption occurred in.

As described above, the film for packing silage according to the present invention is partially relaxed and easily wound on the packing silage during packaging, and the elastic force maintained at this time acts as a force for maintaining the shape of the packing silage, and has excellent flexibility and easy sealing operation. It prevents tearing of the film and protects the packing silage from harmful wild animals such as birds and rodents even if it is contained outdoors, and prevents the silage from decaying by secondary fermentation. By continually maintaining the effectiveness of the repellent, you can get nutritious, high quality bale silage.

In addition, the polymer easily adhesive primer layer improves the adhesion between the films to maintain a tightly sealed state, the anti-corruption gas filled in the air cap has the effect of further improving the quality of the silage while reducing the breakage of the film.

Claims (10)

Preparing a mixture by mixing the synthetic resin with a repellent and mica that are avoided by birds, rodents, mammals or pests;
Molding the mixture to prepare a film; And
Method of producing a film for packing silage comprising; step of partially relaxing after stretching the film. The method according to claim 1,
Said repellent is 0.01 ~ 1.00 g / ㎡ of the packing silage film is mixed, the method of producing a film for packing silage, characterized in that 1 ~ 5 g / ㎡ of the film for packing silage is mixed. The method according to claim 1,
A method for producing a film for packing silage, characterized in that 0.1 to 1.0 g / m 2 of the film for packing silage is added to the mixture. The method according to claim 1,
A method for producing a film for packing silage, characterized in that 0.5 to 2.0 g / m 2 of the packing silage film is added to the mixture, in which a binder in which 97.0 to 99.5% by weight of the acrylic resin and 0.5 to 3.0% by weight of the reactive surfactant is added. The method according to claim 1,
On the surface of the film for packing silage, a primer layer in which 100 parts by weight of water and a water-dispersed polyurethane resin, a water-dispersed polyester resin or a mixed resin of 5 to 20 parts by weight thereof having a glass transition temperature of 60 to 80 ° C. are mixed It is formed in thickness of 80-100 nm, The manufacturing method of the film for packing silage characterized by the above-mentioned. The method according to claim 5,
The primer layer is 100 parts by weight of the epoxy-based curing agent, oxazoline-based curing agent or a mixture of 5 to 10 parts by weight of these, and anionic surfactant production of the film for the packing silage further comprises 0.1 to 5.0 parts by weight Way. The method according to claim 1,
The auxiliary film is padded on one surface of the packing silage film, and the gas is filled in the space between the packing silage film and the auxiliary film, and then fused to each other at positions spaced apart at a predetermined interval horizontally and horizontally, so that the space filled with the gas is filled. Method for producing a film for packing silage, characterized in that to be formed repeatedly in separate sections of a predetermined size. The method of claim 7,
The gas is nitrogen gas, carbon dioxide gas or ammonia gas, wherein the auxiliary film is a heat shrinkable material having a lower shear strength than the film for packing silage, the method for producing a film for packing silage. The method according to claim 1,
After stretching and partially relaxing the film produced by molding a synthetic resin, a method for producing a film for packing silage, characterized in that to form a multi-layer structure by laminating and fusion of 1 to 2 layers on the film for packing silage. delete