JP6273575B2 - Lap net - Google Patents

Description

  The present invention relates to a wrapping net used in the livestock industry, and more particularly to a wrapping net used when using grass such as hay and straw as a roll bale for transportation, storage, and silage.

  Traditionally, in the livestock industry, hay and hay that have been harvested from summer to autumn have been dried and silage that has been fermented with lactic acid has been stored and used as livestock winter feed. . When storing hay and straw as dry pasture, first, the pasture is wound into a roll shape with a roll-vader device and formed into a cylindrical shape to form a roll bale. Next, the roll veil is covered with a wrapping net or the like so that the shape of the roll bale does not collapse, and left for several days. Thereafter, the roll veil in an appropriately dried state is strictly covered with a wrap film from the top of the wrap net and transported and stored.

  On the other hand, when using grass such as hay and straw as silage, first, the grass with moisture of 50-60% is rolled into a roll shape with a roll-vader device and formed into a cylindrical shape to form a roll bale. To do. Next, the roll veil is covered with a wrapping net or the like so that the shape of the roll bale does not collapse. Further, the roll bale is transported and stored in a tightly sealed manner using a wrap film from above the wrapping net. In this state, the grass is fermented with lactic acid to become silage. This method is called a roll bale wrap silo.

  When the hay and silage stored in this way are used as feed, the wrapping net and the wrap film are removed, and the grass and silage are easily fed using a stirrer.

  As described above, the wrapping net is a material that prevents collapse of the roll veil and has high air permeability and is suitable for drying grass. On the other hand, the wrap film improves the strength of the roll veil and prevents the ingress of air and moisture when used in hay, and the roll bale is sealed for lactic acid fermentation when used in silage. It is the best material to promote. Such a method of wrapping a roll bale using a wrapping net and a wrapping film is suitable for use as transportation, storage and silage of grass, and is beginning to spread throughout Hokkaido and other countries.

  The wrapping machine shown in the following Patent Document 1 or the following Patent Document 2 is an apparatus for automatically and efficiently performing roll bale wrapping with a wrap film. On the other hand, these wrapping machines are also used for wrapping by a wrapping net.

JP-A-6-70631 Japanese Patent No. 3801618

  By the way, general-purpose synthetic resins such as polyethylene are used for wrapping nets and wrapping films used in wrapping machines such as Patent Document 1 or Patent Document 2 described above. Moreover, the slit yarn which cut the polyethylene film into elongate from the point of economical efficiency etc. is used for the wrapping net, for example. The slit yarn is formed from a high-density polyethylene (HDPE) film that has been stretched to maintain the physical properties (particularly strength) of the wrapping net, so that the wrapping net has a very low elongation.

  In actual work, when wrapping a wrapping net or wrapping film on a roll bale, the wrapping machine is wrapped with a large tension. Accordingly, a large tension is applied to the outer periphery of the roll bale wrapped by the wrapping net and the wrapping film, and the roll bale is firmly and firmly fixed.

  Thus, even when wrapping with a wrapping net and wrapping film, which is effective for transportation, storage and silage, when using hay and silage of roll bale as feed, Cut and remove the film to unwind the hay and silage. At that time, the wrap film is in a sheet form and is easy to handle and easy to remove. On the other hand, the wrapping net has a problem that it is difficult to remove the wrapping net because a number of slit yarns with low elongation overlap each other with a large tension and are wound around the roll bale.

  For example, when a wrapping net is cut and removed from a roll bale after the wrapping film is removed, a strong force is required, and there are many accidents in which an operator accidentally injures his body with a blade. There has also been an accident in which a worker who tries to remove lap nets that are left uncut from lap nets when they are stirring hay and silage is caught in the machine.

  Further, due to the difficulty in removing the wrapping net, there is a problem that a part of the removed wrapping net is mixed in the livestock feed. As described above, when a part of the wrapping net is mixed in the livestock feed, the livestock eats the synthetic resin wrapping net together with the feed, and the livestock becomes sick or dies. there were.

  Further, as described above, a general-purpose synthetic resin such as polyethylene is used for the removed wrapping net and wrapping film. Therefore, these have to be disposed as industrial waste, and there is a problem that the labor and processing costs are high for livestock farmers.

  On the other hand, apart from these problems, the grass near the surface of the roll bale is easily oxidized by air even when the roll bale is left in the state of being covered with the wrapping net or after being covered with the wrap film. There was a problem that deterioration and nutritional value fell. Further, when silage is made into grass, there is a problem that the vicinity of the surface of the roll bale is oxidized and lactic acid fermentation is hindered.

  Furthermore, when making silage with a roll bale wrap silo, a method may be used in which lactic acid bacteria are sprinkled in advance on the grass and the grass is wound on a roll bale. At this time, there was a problem that the amount of lactic acid bacteria sprinkled on the grass was large and the silage cost was high.

  In view of the above, the present invention addresses the above and facilitates the removal of the wrapping net when using the grass for transportation, storage, and silage. An object of the present invention is to provide a wrapping net that can produce hay or silage with high nutritional value at a low cost because the grass near the surface of the roll bale is not deteriorated.

  As a result of diligent research, the present inventor studied the structure of the wrap net, combined two types of yarns made of cellulosic fibers as the material of the lap net, and combined the yarns made of the cellulosic fibers. It has been found that the above object can be achieved by attaching lactic acid bacteria or the like in advance, and the present invention has been completed.

That is, the wrapping net according to the present invention is as described in claim 1.
Each warp group consisting of cellulosic fibers arranged in parallel in the length direction of the knitted fabric forms a plurality of independent chain knittings by loops continuous in the length direction of the knitted fabric,
Each loop of the independent chain knitting consists of a knitted fabric formed by being connected to other loops of other independent chain knitting by wefts made of cellulosic fibers,
The warp yarn strength is greater than the weft yarn strength, and lactic acid bacteria adhere to one or both of the warp yarn and the weft yarn.

According to the description of claim 2, the present invention is the wrapping net according to claim 1,
The lactic acid bacterium is a lactic acid bacterium containing at least one of Lactobacillus buchneri and Lactobacillus plantarum.

According to the description of claim 3, the present invention is the wrapping net according to claim 1 or 2,
The weft yarn extends from below to above in the length direction of the knitted fabric, and the independent chain knitting is performed at an entanglement point between a needle loop of a loop constituting the independent chain knitting and a sinker loop of a loop immediately above the loop. Inserted into
Furthermore, the other independent chain knitting extends to the other independent chain knitting at the entanglement point of the needle loop of the loop constituting the independent chain knitting and the other independent chain knitting adjacent thereto and the sinker loop of the loop immediately above the loop. By being inserted
The independent chain knitting and another independent chain knitting adjacent thereto are connected to form a knitted fabric.

According to a fourth aspect of the present invention, there is provided the wrapping net according to any one of the first to third aspects,
The warp is an aligned yarn that is aligned without twisting at least two yarns of a single yarn of 5th to 20th short fiber spun yarn made of cotton fibers,
The weft yarn is a single yarn of 10th to 30th short fiber spun yarn made of cotton fibers.

Moreover, according to the description of claim 5, the present invention is the lap net according to any one of claims 1 to 3,
The warp yarn is a twisted yarn obtained by twisting at least two yarns of a single yarn of 5th to 20th short fiber spun yarn made of cotton fibers,
The weft yarn is a single yarn of 10th to 30th short fiber spun yarn made of cotton fibers.

According to a sixth aspect of the present invention, there is provided the wrapping net according to any one of the first to fifth aspects,
With a warp knitting machine, the knitting density is 0.5 to 20 courses / 2.54 cm, and the distance between the independent chain knitting continuous in the length direction of the knitted fabric and the other independent chain knitting is 10 cm or less. It is characterized by being formed into.

According to a seventh aspect of the present invention, there is provided the wrapping net according to any one of the first to sixth aspects,
When the interval between the independent chain knitting that is continuous in the length direction of the knitted fabric and the other independent chain knitting adjacent to A is A, and each independent chain knitting is set to B when the length of one loop is extended,
The value of the opening ratio C of the knitted fabric represented by C = A / B is in the range of 1 to 5.

  According to the structure of the said Claim 1, the wrapping net which concerns on this invention consists of the knitted fabric knitted with the warp which consists of cellulosic fiber, and a weft (two types of different yarn). The warp forms a plurality of independent chain knitting extending in the length direction of the knitted fabric. On the other hand, the weft thread forms a knitted fabric by connecting each loop of independent chain knitting and other loops of other independent chain knitting. Further, in this knitted fabric, the warp yarn strength is greater than the weft yarn strength.

  As a result, when the used wrapping net is removed, the weft is preferentially cut, and the wrapping net can be easily removed. Therefore, the accident that the worker of the removal work accidentally injures the body with the blade does not occur.

  In addition, because warp and weft are both made of cellulosic fiber, even if the livestock eats part of the wrapping net made of cellulosic fiber together with feed, it is the same component as hay and straw. It is digested in the body and does not affect livestock.

  Furthermore, according to the configuration of claim 1, the wrapping net according to the present invention is characterized in that lactic acid bacteria adhere to one or both of a warp and a weft made of cellulosic fibers. As a result, grass near the surface of the roll bale is not deteriorated by the action of lactic acid fermentation, so that dry grass or silage with high nutritional value can be produced at low cost.

  According to the configuration of claim 2, the lactic acid bacteria attached to one or both of the warp and weft made of cellulosic fibers are Lactobacillus buchneri and Lactobacillus plantarum. It is characterized by being a lactic acid bacterium containing at least one of them. Among these lactic acid bacteria, Lactobacillus buchneri can perform active lactic acid fermentation even at low temperatures. On the other hand, Lactobacillus plantarum has excellent low pH tolerance and lactic acid production ability. For these reasons, grass near the surface of the roll bale is not degraded by the action of lactic acid fermentation, and dry grass or silage with high nutritional value can be produced at low cost.

  Further, according to the configuration of claim 3, the knitted structure of the wrapping net includes a needle loop of a loop in which the weft yarn extends from below to above in the length direction of the knitted fabric to form an independent chain knitting, and the loop You may make it insert in an independent chain stitch at the confounding point with the sinker loop of a loop just above. Further, the weft yarn extends upward and is inserted into the other independent chain knitting at the entanglement point between the needle loop of the loop constituting the other independent chain knitting adjacent to the loop and the sinker loop of the loop immediately above the loop. It may be. As a result, the independent chain knitting and the other independent chain knitting adjacent thereto are connected to form the knitted fabric.

  According to the configuration of claim 4, the warp is a pull that is aligned without twisting at least two or more single yarns of 5th to 20th short fiber spun yarns made of cotton fibers. The weft yarn may be a single yarn of 10th to 30th short fiber spun yarn made of cotton fibers. As a result, when removing the used wrapping net, weak wefts are preferentially cut, and the wrapping net can be removed more easily.

  In addition, since both the warp and weft are made of cotton fiber, even if the livestock eats part of the wrapping net made of cotton fiber together with the feed, it is the same component as hay and straw, It will be digested and will not affect livestock.

  Further, according to the configuration of claim 5, the warp is a twisted yarn obtained by twisting at least two yarns of 5th to 20th short fiber spun yarns made of cotton fibers, and the weft is Alternatively, a single yarn of 10th to 30th short fiber spun yarn made of cotton fibers may be used. As a result, when removing the used wrapping net, weak wefts are preferentially cut, and the wrapping net can be removed more easily.

  In addition, since both the warp and weft are made of cotton fiber, even if the livestock eats part of the wrapping net made of cotton fiber together with the feed, it is the same component as hay and straw, It will be digested and will not affect livestock.

  According to the configuration of claim 6, the lap net is knitted by a warp knitting machine having a knitting density of 0.5 to 20 courses / 2.54 cm and another independent chain knitting adjacent to the independent chain knitting. You may make it knitted so that the space | interval may become 10 cm or less. As a result, the merit of the wrapping net effective for transportation and storage is maintained, and the wrapping net removal work is facilitated.

  Further, according to the configuration of claim 7, an interval between the independent chain knitting continuous in the length direction of the knitted fabric and another adjacent independent chain knitting is A, and in each independent chain knitting, one loop is extended. When the time length is B, the value of the opening ratio C of the knitted fabric represented by C = A / B may be in the range of 1 to 5. When the value of the opening ratio C is in the range of 1 to 5, the shape of the opening portion of the knitted fabric is in a square or horizontally long state with respect to the length direction of the knitted fabric. As a result, the degree of freedom of the knitted fabric increases in the warp direction, the stretchability in the warp direction of the wrapping net is improved, and the wrapping and removing work of the wrapping net becomes easy.

  In this way, according to the present invention, when using grass for transportation, storage and silage, it is easy to remove the wrapping net, and there is little impact on livestock even if the wrapping net is mixed in the feed, In addition, since the grass near the surface of the roll veil does not deteriorate, a lap net that can produce dry grass or silage with high nutritional value at low cost can be provided.

It is the schematic which shows the organization organization of one Embodiment of the lap net which concerns on this invention.

  Hereinafter, the present invention will be described in detail. The wrapping net according to the present invention is knitted with warp yarns and weft yarns (two different types of yarns) made of cellulosic fibers. In the present invention, examples of the cellulosic fibers used for warp and weft include natural cellulosic fibers such as cotton and hemp, and regenerated cellulosic fibers such as rayon, cupra, polynosic, and tencel. Examples of hemp fibers include flax (linen), ramie, cannabis (hemp), and jute.

  In the present invention, both the warp and the weft are made of cellulosic fibers, so that when the wrap net is removed from the roll veil, a part of the wrap net becomes a residue and is mixed with hay and silage. There is little influence on. That is, when using a roll veil as livestock feed, even if the livestock eats part of the wrapping net made of cellulosic fibers together with the feed, it is the same component as hay and straw, It is digested in the body and does not affect livestock.

Further, since both the warp and the weft are made of cellulosic fibers, the wrapping net removed from the roll bale can be buried in the soil as it is and discarded. Alternatively, even when the used wrapping net is disposed of by incineration, it is carbon neutral with respect to the conventional synthetic resin fiber and does not newly emit CO ₂ . Therefore, it is possible to reduce the labor and processing cost when discarding the used wrapping net, and the environmental impact.

  In the present invention, among the above-mentioned cellulose fibers, it is preferable to use natural cellulose fibers, and it is particularly preferable to use cotton fibers. This is because cotton fibers are general-purpose fibers, and spun yarns of various thicknesses can be easily obtained at low cost.

  In the present invention, when a yarn made of cotton fibers is used for warp, the unit of thick count may be used as it is, or at least two units of medium count to thick count are used in combination. You may make it do. For example, when two or more single yarns of cotton fiber are used together, as an aligned yarn that is aligned without twisting two or more single yarns of 5th to 20th short fiber spun yarn It may be used. Moreover, you may make it use as a twisted yarn which twisted two or more of the single yarn of 5th-20th short fiber spun yarn.

  In the present embodiment, it is preferable to use an aligned yarn or a twisted yarn obtained by combining at least two cotton spun yarns of 5th to 20th yarns. In addition, the 5th to 20th cotton spun yarns are used as single yarns because these yarns are thick and strong, and are available on the market as low-cost general-purpose yarns. Because you can. Further, the reason why the aligned yarn or the twisted yarn is used for the warp is to further increase the strength of the thick yarn and increase the strength difference from the weft described later. The degree of twist of the single cotton spun yarn may be appropriately selected depending on the yarn strength and elongation.

  Here, the aligned yarn refers to a yarn that is used without being twisted by aligning two or more yarns. In the case of the draw yarn, since two or more yarns are used while being drawn, the yarn has excellent strength. On the other hand, the term “twisted yarn” refers to a yarn in which two or more yarns are drawn and twisted together. In the case of a twisted yarn, since two or more yarns are twisted together, the yarn has a higher strength than the aligned yarn. A twisted yarn obtained by twisting two yarns is called a twin yarn, and a twisted yarn obtained by twisting three yarns is called a triplet yarn. Normally, twin yarns and triplet yarns are twisted in the opposite direction to the single yarn twist. A single yarn twist is called a lower twist, and a twin yarn or triplet yarn is called an upper twist. In addition, what is necessary is just to select suitably the grade of the upper twist of a twisted yarn by yarn strength and elongation.

  On the other hand, in the present invention, when a yarn made of cotton fibers is used for the weft, it is preferable to use a single yarn of 10th to 30th cotton spun yarn. This is because the 10th to 30th cotton spun yarns are also distributed in the market as low-cost general-purpose yarns and can be easily obtained. The reason for using a single yarn for the weft is to increase the strength difference from the above-mentioned warp. The degree of twist of the cotton spun yarn may be selected as appropriate according to the yarn strength and elongation.

  Further, when the cotton spun yarn used for the weft is thicker than 10th, the yarn strength is increased and the difference from the yarn strength of the warp yarn composed of the twisted yarn is reduced, and the effect of the present invention cannot be exhibited. On the other hand, when the cotton spun yarn is thinner than the 30th yarn, the yarn strength is low and it is difficult to maintain the shape of the wrapping net, and the yarn price is increased.

  In the present invention, the warp yarn strength is required to be greater than the weft yarn strength. As a result, when removing the used wrapping net, weak wefts are preferentially cut, and the wrapping net can be removed more easily. Therefore, the accident that the worker of the removal work accidentally injures the body with the blade does not occur.

  Here, when both the warp and the weft are made of cotton yarn, as described above, for the warp, use an aligned yarn or a twisted yarn in which the strength of the medium count to the thick count is further increased, On the other hand, it is preferable to use a single yarn as the weft to increase the strength difference between the warp and the weft. As a result, even when cotton spun yarn is used for both the warp and the weft, the weak weft is preferentially cut, and the lap net can be removed more easily.

  Here, the reason why the weft strength of the weft is made smaller than the warp strength will be described in more detail. As physical properties when using the wrapping net, the warp maintains the longitudinal strength of the knitted fabric and the weft maintains the horizontal connection (the knitting will be described later). Accordingly, it is the warp yarn strength that firmly fixes the outer periphery of the roll bale after lapping, and the weft yarn does not require the same yarn strength as the warp yarn.

  The conventional wrapping net uses the same warp and weft yarn because it is easy to manufacture and can be knitted inexpensively. On the other hand, in the present invention, a weft having a lower yarn strength than the warp is used, and the warp and the weft are provided with a difference in strength. Thus, in removing the wrapping net after use, when the high-strength warp is pulled away from the roll bale, the low-strength weft connected thereto is cut.

  When the weft is cut in this way, the lap net is in an independent chain knitting state (the knitting will be described later) made of high-strength warp. These independent chain stitches are the same as the rope shape and can be easily removed from the roll veil. This facilitates the removal work of the wrapping net, and does not cause an accident that the worker of the removal work accidentally injures his body with the blade.

  On the other hand, most of the wefts cut by the removal operation are removed along with the warp of the independent chain knitting. However, some of the wefts become residues and are mixed into roll bale hay and silage. However, these residues are composed of cellulosic fibers and are the same components as hay and straw, and are not digested in the body of livestock and do not affect livestock.

  Furthermore, in the present invention, lactic acid bacteria are attached to one or both of the warp and the weft made of cellulosic fibers. Lactic acid bacteria is a general term for bacteria that break down carbohydrates and mainly produce lactic acid. The genus Lactobacillus, Streptococcus, Leuconostoc, and Pediococcus There are four genera. In the present invention, lactic acid bacteria belonging to any of these four genera can be used, but it is particularly preferable to use lactic acid bacteria used when using grass as silage.

  In particular, among the lactic acid bacteria belonging to the genus Lactobacillus, it is preferable to use Lactobacillus buchneri, Lactobacillus plantarum known as “Hakusa No. 1”, and the like. Furthermore, among Lactobacillus buchneri (Lactobacillus buchneri), it is further possible to use a lactic acid bacterium that is lactic acid fermented even at low temperatures cultivated at Okayama University and produces acetic acid in the process of lactic acid fermentation, a lactic acid bacterium composed of Lactobacillus bukuneri strain NK01. preferable.

  On the other hand, the step of attaching these lactic acid bacteria to the lap net is not particularly limited, and the lactic acid bacteria may be attached in a yarn state, or the lactic acid bacteria are attached to the lap net after being knitted. You may do it. Further, the method for attaching the lactic acid bacteria to the yarn or lap net is not particularly limited, and examples thereof include a method of immersing and spraying the liquefied lactic acid bacteria.

  Further, the amount of lactic acid bacteria adhering to the wrapping net is not particularly limited, and may be appropriately determined depending on the usage state of the wrapping net. In any case, it is necessary that the amount of lactic acid bacteria exhibiting the effect of the present invention is attached.

  Thus, it is not clear why the grass near the surface of the roll bale will not deteriorate due to the lactic acid bacteria adhering to one or both of the warp and weft constituting the wrap net. It is conceivable to prevent air oxidation due to the reductive properties. It is also conceivable that lactic acid produced by lactic acid fermentation suppresses the propagation of other bacteria and prevents the deterioration of grass.

  On the other hand, when making silage with a roll bale wrap silo, conventionally, as described above, a method has been used in which lactic acid bacteria are sprinkled in the grass in advance and the grass is wound around the roll bale. In this method, the amount of expensive lactic acid bacteria used is increased and the silage cost is increased. In contrast, in this embodiment, a small amount of lactic acid bacteria is attached to a wrapping net that is wrapped on the surface of a roll bale. Thus, it is considered that silage is generated from the surface side of the roll bale toward the inside as lactic acid fermentation progresses. This makes it possible to produce silage with high nutritional value at low cost.

  Next, the organization organization which comprises the lap net which concerns on this invention is demonstrated. In the present invention, the wrapping net is a warp knitting net knitted by a warp knitting machine using the warp and the weft made of the two types of cellulose fibers described above. Here, the warp knitting is a knitting method in which warp groups arranged in parallel in the length direction of the knitted fabric form a stitch (loop) continuously in the length direction of the knitted fabric. It is characterized by high strength in the vertical direction.

  As the knitting organization of warp knitting, there are various knitting organizations based on basic organization such as single denby, single cord, single atlas, chain stitch (chain knitting), etc. In the present invention, among these, chain stitch Is adopted. The wrapping net according to the present invention needs to be a knitted fabric in which a chain stitch (chain knitting) is composed of warp yarns made of cellulosic fibers and weft yarns made of cellulosic fibers are inserted into the chain stitches (chain knitting). is there. This is because in the knitted structure other than the chain stitch, the chain stitches are connected by warp, and the connecting portion is not cut in the removal operation of the lap net after use, and the removal operation becomes difficult.

  Examples of the warp knitting machine include a Raschel knitting machine and a tricot knitting machine. In the present invention, any knitting machine may be used, but it is generally preferable to use a Raschel knitting machine in terms of productivity and the like.

  Here, the organization of the lap net according to the present invention will be specifically described. FIG. 1 is a schematic view showing a knitting structure of a lap net according to the present invention. In FIG. 1, a wrapping net (10) is composed of a warp (1) made of a strong cellulose fiber and a weft (2) made of a weak cellulose fiber, and this warp (1) is the basis of the knitted fabric. The loop (20) which comprises is formed.

  In FIG. 1, a knitted fabric composed of chain stitches of 4 wales (vertical ridges) × 8 courses (horizontal ridges) is shown. Each wale (30) and each course (40) are further knitted in the vertical and horizontal directions to form a wide and long knitted fabric. In FIG. 1, four warps (1) arranged in parallel in the warp direction each form a continuous loop (20) while extending upward in the figure, and constitute a wale (30) made of independent chain stitches. .

  In this state, the wales (30) of each independent chain knitting are not connected to each other and do not constitute a knitted fabric. Therefore, the warp group (1) made of cellulosic fibers forms the individual chain knit wales (30), and the weft yarn (2) made of cellulosic fibers is made up of each loop (20) of the wale (30) and the other The warp knitting net is knitted so as to connect the other loop (20) of the wale.

  In FIG. 1, the weft thread (2) extends upward in the drawing, and firstly, the entanglement point of two loops of a continuous wale (a needle loop protruding above one loop and a protrusion below the loop immediately above it). At the point where the sinker loops are connected), they extend upward through these loops. Thereafter, the weft (2) extends further upward through the loops (submerges) at the entanglement point of two consecutive loops of other adjacent wales. Thereafter, the weft yarn (2) extends further upward (through the dive) through the loops at the entanglement point between two adjacent loops of the adjacent original wales, and then extends in the same manner. Link.

  Further, the knitting density of the warp knitting net knitted by a warp knitting machine is preferably 0.5 to 20 courses / 2.54 cm, and more preferably 1 to 10 courses / 2.54 cm. Further, the distance between the stitches continuous in the length direction of the knitted fabric and the adjacent stitches is preferably 10 cm or less, and more preferably 5 cm or less. Further, the interval between the stitches may be any as long as the physical properties as a wrap net can be maintained by adjusting the relationship between the fineness and strength of the warp and weft yarns to be knitted. Good. For example, it is also possible to set it from 2.5 cm or less to about 0.5 mm.

  The lap net has a knitting density of 0.5 to 20 courses / 2.54 cm, and the distance between the stitches continuous in the length direction of the knitted fabric and the adjacent stitches is 10 cm or less, so that the cut grass is wrapped. Since it does not fall off from the net of the net and has a certain degree of roughness, a lap net having a small basis weight (weight per unit area) and good economy can be configured. As a result, the merit of the wrapping net effective for transportation and storage is maintained, and the wrapping net removal work is facilitated.

  Here, when a thick count single yarn made of cotton spun yarn, an aligned yarn or a twisted yarn is used as the warp yarn of the wrap net, the warp yarn itself has a low elongation and the warp direction of the wrap net (of the knitted fabric) The stretchability in the length direction) may be reduced. When the stretchability of the wrapping net is small, the workability when wrapping the roll bale and the workability when removing the wrapping net are difficult. Therefore, in the present invention, it is preferable to control the shape of the opening portion of the knitted fabric of the lap net.

  That is, it is preferable that the value of the opening ratio representing the shape of the opening portion of the knitted fabric of the warp knitting net knitted by the warp knitting machine is within a predetermined range. Here, the opening ratio of the knitted fabric refers to the opening length in the vertical direction (warp side) of the opening portion formed by the independent chain knitting made of warp and the opening length in the horizontal direction (laft side) of the opening portion formed by the weft. It is expressed by the ratio of In other words, the distance between the independent chain knitting continuous in the length direction of the knitted fabric and other adjacent independent chain knitting (the weft side) is A, and in each independent chain knitting, the length (longitudinal side) of one loop is extended. ) Is B, the value of the opening ratio C of the knitted fabric is represented by C = A / B.

  In the present invention, the value of the opening ratio C is preferably in the range of 1 to 5, and more preferably in the range of 1 to 3. When the value of the opening ratio C is 1, the shape of the opening portion of the knitted fabric is a square. Further, when the value of the opening ratio C is larger than 1, the shape of the opening portion of the knitted fabric becomes a rectangular shape that is horizontally long with respect to the length direction of the knitted fabric. The shape of the opening of the knitted fabric is in a square or horizontally long rectangular shape, so the degree of freedom of the knitted fabric increases in the warp direction (length direction of the knitted fabric) and the stretchability in the warp direction of the wrapping net is improved. To do. This facilitates the wrapping and removing work of the wrapping net.

  Next, the lap net according to the present invention will be described in detail by way of examples. In addition, this invention is not limited only to a following example.

  In this example, as a warp made of cellulosic fibers constituting a wrapping net, two aligned 12th (12 /-) cotton spun yarns are used without being twisted (12 //). 2s) was used. The yarn strength (tensile strength) of the cotton alignment yarn (12 // 2 s) was 14 N / 1. On the other hand, as a weft made of cellulosic fibers constituting the wrapping net, a 20th (20 / −) cotton spun yarn was used as a single yarn. The yarn strength (tensile strength) of this cotton spun yarn was 3N / 1. The measurement of the tensile strength and elongation (tensile strength and elongation) of the yarn was based on JIS-L1013.

Next, lactic acid bacteria were attached to both the warp and the weft made of these cellulose fibers. In this example, a lactic acid bacterium composed of Lactobacillus bukuneri NK01 strain was employed. Specifically, “Silo SP (registered trademark)” manufactured by Snow Brand Seedling Co., Ltd. was used. The warp and the weft were each wound on a kite (yarn bundle), and the kite was dipped in a 1% by weight water dilution of silo SP (viable bacteria number: 5 × 10 ⁸ CFU) and dried. Drying was performed at room temperature to prevent inactivation of lactic acid bacteria.

Next, a lap net was knitted using the warp and the weft to which the lactic acid bacteria were attached in this manner. In this example, a Raschel knitting machine was used for knitting the wrapping net, and the wrapping net having the knitting structure shown in FIG. 1 was knitted (in FIG. 1, the warp is shown as a single line for the sake of simplicity. But it is actually two draw yarns). The knitting density of the lap net knitted in this example is 2 courses / 2.54 cm, and the interval between the chain stitch (wales) continuous in the length direction of the knitted fabric and the adjacent chain stitch (wales) is 2 0.5 cm. The basis weight of the lap net was 15 g / m ² . The independent chain knitting at both ends (ears) of the wrap net is provided with force yarns that reinforce the independent chain knitting without forming a loop along the independent chain knitting. In this example, the 20th cotton spun yarn was used as a single yarn as the force yarn.

  The wrapping net according to the present embodiment is knitted with the knitting structure shown in FIG. 1, and each chain stitch (wel) is a warp cotton assortment yarn (12 // 2s) for one loop. It is formed by running three times in the vertical direction (1.5 reciprocations), so the strength (tensile strength) per chain stitch is the strength of cotton alignment yarn (12 // 2s) It was 40N / 1 which was about 3 times.

  On the other hand, one weft corresponds to one chain stitch (see FIG. 1). From this, one 3N / 1 weft corresponds to one 40N / 1 chain stitch, and the strength difference between the warp and the weft becomes larger. As a result, when removing the used wrapping net, weak wefts are preferentially cut, and the wrapping net can be removed more easily. Therefore, the accident that the worker of the removal work accidentally injures the body with the blade does not occur.

  Further, as described above, the knitting density of the wrapping net according to the present embodiment is 2 courses / 2.54 cm, and the chain stitch (wales) adjacent to the chain stitch (wales) continuous in the length direction of the knitted fabric is used. Was 2.5 cm. From this, the value of the opening ratio C representing the shape of the opening portion of the lap net is as follows.

  First, the interval (latitude) between the chain stitch (wale) and the adjacent chain stitch (wale) is A = 2.5 cm, and the length (longitudinal side) when one loop is extended is B = 2. It was .54 cm / 2 = 1.77 cm. Therefore, the opening ratio of the wrapping net according to this example was C = A / B = 2.5 / 1.77 = 2. As a result, the shape of the opening portion of the wrap net becomes a rectangle that is horizontally long with respect to the length direction of the wrap net, the degree of freedom of the knitted fabric increases in the warp direction (length direction of the knitted fabric), and the warp direction of the wrap net The elasticity of was good. This facilitates the wrapping and removing work of the wrapping net.

Using the wrapping net (width: 1 m, basis weight: 15 g / m ² ) of the present example obtained in this way, roll bale was actually wrapped using a lapping machine. As a result, it was able to withstand the same high device tension as a conventional wrapping net (use of high-density polyethylene for both warp and weft). Further, the surface of the wrapped roll bale was sufficiently hardened and was practically satisfactory. By these things, the merit of the wrapping by the wrapping net effective for transportation and storage can be maintained as in the conventional wrapping net.

  In addition, the roll bale wrapped with the wrapping net of this example was allowed to stand for several days, and then further wrapped with a wrap film similar to the conventional one and sealed. When the roll bale in this state is left for a long time, lactic acid bacteria attached to the lap net on the surface of the roll bale act to perform lactic acid fermentation and generate lactic acid. This reduction of lactic acid does not oxidize the grass near the surface of the roll veil, so that hay with high nutritional value can be provided without deterioration of the hay.

  In addition, when the roll bale in this state is stored for a longer period, lactic acid fermentation further proceeds and silage is produced. This silage is due to the action of a small amount of lactic acid bacteria adhering to the wrapping net, and can provide silage having a high nutritional value at a lower cost than the conventional method of imparting lactic acid bacteria to all pastures.

  Next, the lap net was removed. In the wrapping net of this example, when the high-strength warp (actually chain stitch) was pulled away from the roll bale, the low-strength weft connected thereto was appropriately cut. Therefore, the wrapping net is in the state of chain stitch made of high warp and can be easily removed from the roll veil. This facilitates the removal work of the wrapping net, and does not cause an accident that the worker of the removal work accidentally injures his body with the blade.

  On the other hand, most of the wefts cut by the removing operation were removed along with the chain stitch made of warp, and the weft residue was hardly mixed into the hay and silage of the roll bale. However, even if these residues are mixed in hay or straw, livestock can be digested, so there is no problem.

  As described above, according to the present invention, when using grass for transportation, storage, and silage, it is easy to remove the wrapping net, and even if the lap net residue is mixed in the feed, there is no impact on the livestock. Since there is little and the grass near the surface of a roll bale does not deteriorate, the lap net which can produce dry grass or silage with high nutritional value at low cost can be provided.

In implementing the present invention, not only the above-described embodiments but also the following various modifications may be mentioned.
(1) In the above embodiment, lactic acid bacteria are attached to both the warp and the weft of the wrap net. The lactic acid bacteria may be attached only to the wefts of the wrapping net.
(2) In the above embodiment, a lactic acid bacterium composed of Lactobacillus bukuneri NK01 strain is adopted as a lactic acid bacterium to be attached to both the warp and the weft of the lapnet, but is not limited thereto, and other lactic acid bacteria In addition, other lactic acid bacteria that are particularly effective for producing silage may be employed.
(3) In the above embodiment, only the lactic acid bacteria are attached to both the warp and the weft of the wrap net. However, the present invention is not limited to this. As a nutrient for koji molds, natto bacteria, or lactic acid bacteria, saccharides and the like may be used in combination.
(4) In the above embodiment, as the cellulose fiber constituting the warp of the wrapping net, the two aligned 12th (12 /-) cotton spun yarns are aligned and used without being twisted (12 // 2s) is used, but is not limited to this. Use a thick cotton spun yarn as a single yarn, or a double yarn in which two cotton spun yarns from medium to thick are aligned. You may make it use the triplet | yarn thread | yarn etc. which arranged three. Alternatively, yarn made of cellulosic fibers other than cotton spun yarn may be used.
(5) In the above embodiment, 20th (20 /-) cotton spun yarn is used as the cellulosic fiber constituting the weft of the wrapping net, but this is not restrictive. You may make it use the thread | yarn which consists of cellulosic fibers other than a thread | yarn or cotton spinning thread | yarn.
(6) In the above embodiment, the knitting density of the lap net is 2 courses / 2.54 cm, and the distance between the chain stitch that is continuous in the length direction of the knitted fabric and the adjacent chain stitch is 2.5 cm. However, the present invention is not limited to this, and the roughness of the knitted fabric may be adjusted according to the cut length of the pasture.
(7) In the above embodiment, the wrapping net is removed from the roll bale. However, the present invention is not limited to this, and the wrapping net wound around the roll bale is finely cut including warps and wefts, You may make it make livestock eat as a feed with silage.

1 ... warp, 2 ... weft, 10 ... knitted fabric, 20 ... loop, 30 ... wale, 40 ... course.

Claims (7)

Each warp group consisting of cellulosic fibers arranged in parallel in the length direction of the knitted fabric forms a plurality of independent chain knittings by loops continuous in the length direction of the knitted fabric,
Each loop of the independent chain knitting consists of a knitted fabric formed by being connected to other loops of other independent chain knitting by wefts made of cellulosic fibers,
A wrapping net, wherein the warp has a yarn strength greater than that of the weft, and lactic acid bacteria adhere to one or both of the warp and the weft.   The lap net according to claim 1, wherein the lactic acid bacterium is a lactic acid bacterium comprising at least one of Lactobacillus buchneri and Lactobacillus plantarum. The weft yarn extends from below to above in the length direction of the knitted fabric, and the independent chain knitting is performed at an entanglement point between a needle loop of a loop constituting the independent chain knitting and a sinker loop of a loop immediately above the loop. Inserted into
Furthermore, the other independent chain knitting extends to the other independent chain knitting at the entanglement point of the needle loop of the loop constituting the independent chain knitting and the other independent chain knitting adjacent thereto and the sinker loop of the loop immediately above the loop. By being inserted
The lap net according to claim 1 or 2, wherein the independent chain knitting and another independent chain knitting adjacent thereto are connected to form a knitted fabric. The warp is an aligned yarn that is aligned without twisting at least two yarns of a single yarn of 5th to 20th short fiber spun yarn made of cotton fibers,
The lap net according to any one of claims 1 to 3, wherein the weft yarn is a single yarn of 10th to 30th short fiber spun yarn made of cotton fibers. The warp yarn is a twisted yarn obtained by twisting at least two yarns of a single yarn of 5th to 20th short fiber spun yarn made of cotton fibers,
The lap net according to any one of claims 1 to 3, wherein the weft yarn is a single yarn of 10th to 30th short fiber spun yarn made of cotton fibers.   With a warp knitting machine, the knitting density is 0.5 to 20 courses / 2.54 cm, and the distance between the independent chain knitting continuous in the length direction of the knitted fabric and the other independent chain knitting is 10 cm or less. The wrapping net according to any one of claims 1 to 5, wherein the wrapping net is knitted. When the interval between the independent chain knitting that is continuous in the length direction of the knitted fabric and the other independent chain knitting adjacent to A is A, and each independent chain knitting is set to B when the length of one loop is extended,
The lap net according to any one of claims 1 to 6, wherein the value of the opening ratio C of the knitted fabric represented by C = A / B is in the range of 1 to 5.

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