EP3831995A1

EP3831995A1 - Rolled wrapping net production method, rolled wrapping net production apparatus, and rolled wrapping net

Info

Publication number: EP3831995A1
Application number: EP19845375.5A
Authority: EP
Inventors: Kenichi Okamoto; Tadashi Okamoto
Original assignee: Okamoto Lace Co Ltd
Current assignee: Okamoto Lace Co Ltd
Priority date: 2018-07-30
Filing date: 2019-07-26
Publication date: 2021-06-09
Anticipated expiration: 2039-07-26
Also published as: WO2020027005A1; EP3831995C0; EP3831995A4; EP3831995B1

Abstract

In the present invention, in winding process of a net cloth, the net cloth is wound around a roll core while swinging in a fixed range within the limit of space between chain knitting structures and swinging the net cloth in a width direction while keeping a space between the chain knitting structures. a rolled wrapping net is wound around a roll core by winding the net cloth composed of cotton yarn while swinging in the width direction such that different chain knitting structures do not overlap each other, the rolled wrapping net can be thereby manufactured in which each chain knitting structure is arranged in parallel in the width direction and a radial direction of a roll. Form this, it is possible not only to make surface of a cloth roll smooth by uniformized the state of overlapping of the cloth but also make a long cloth the roll in compact allowing of mounting it on an existing baler machine.

Description

Background Art

The present invention relates to an improved method for manufacturing a rolled wrapping net, for more details, the method for manufacturing a rolled wrapping net consisting of cloth material which is friendly for domestic animals and environment and usable in an existing roll baler machine without problems.

Prior Art

In recent years, in the dairy and livestock industry, since there are many stock raisers who raise a large number of domestic animals by few people, in addition, workers grow older and labor saving is required as well, a roll baler machine is commonly used for producing feed rolls (rolled feed wrapped in wrapping net). Therefore, quality and function of the wrapping net for feed roll is required that do not cause trouble even when it is placed on the roll baler machine and used.
On the other hand, heretofore, as a wrapping net for the feed roll, though there has been known a warp yarn knitted cloth using high strength polyethylene or polypropylene film yarn which is low cost, stretchable and water resistant as well as high strength (see Patent Document 1).
Since bale net made of PE / PP is not naturally decomposed and not digested when domestic animals eat it, there is concern over risks of environment and health of domestic animals. Especially, since the price of domestic animals is soaring recently, awareness of safety of domestic animals is high.
Therefore, though the applicant has previously developed a wrapping net made of cotton yarn, since film yarn and cotton yarn are different in the physical properties, a new challenge was found. By the way, a reason for selecting cotton yarn is that cotton is soft fiber and can be digested with enzymes issued by bacteria in the stomach of domestic animals. Since regenerated fibers (rayon, etc.) that are other cellulose fibers are subject to chemical treatment or the like, there are problems with security, and natural fibers such as hemp are poor digestible due to hard fibers.
As a newly found challenge, there is a problem at the time of cutting of a cloth, specifically, as for the usual wrapping net made of PE / PP, though used is whose cloth width wider than a width of the feed roll, and cutting of the cloth is performed while stopping extension of the wrapping net by overhanging and staying (covering and hooking) it at both ends of the feed roll, since cotton yarn has low elongation unlike film yarn, when overhanging the cloth, a projected part of the cloth is cut, which would cause trouble.
Therefore, as for the cotton yarn wrapping net, a method for cutting the cloth has been used in which cutting is performed while applying uniform tension to the whole of wound cloth which is wound on the feed roll so as not to overhang from it.
However, in a conventional cloth roll made by winding the cloth on a paper tube while simply swinging the cloth to the left and right (e.g., see Patent Document 2), since a space between each warp yarn (chain knitting structure) becomes uneven at the time of winding, which results in variation in tightening of the loop of each warp yarn, it is impossible to pull out the cloth while applying uniform tension to each warp yarn.
Moreover, the above conventional cloth roll is not limited to be difficult to perform smooth cutting, but there are problems as well that the cloth roll mounted on a roll bale machine of stationary type (detail of it will be described latter) rampages in a bucket at the time of use, so that brake become to be hard to work and that pulled out cloth is shrunk in a width direction.
In addition, in the roll baler machine of the stationary type, a cloth roll is tilted when the cloth roll of uneven surface shape is placed on the bottom surface of the bucket, which would likely cause trouble of entangling of cloth end at the time of pulling out.
On the other hand, as for the wrapping net mounted on the roll baler machine, though at least 2000m or more of the cloth is required from the viewpoint of work efficiency, since a large thickness part is formed on the conventional roll, it is impossible to make a long cloth a roll shape in compact, if the cloth of the required length is formed in roll shape, a problem would also be occurred that roll diameter becomes too large and it is impossible to attach it to the bucket or the like of the existing roll baler machine.

Citation List

Patent literature

Patent Document 1 Unexamined Patent Publication No. 2014-133965
Patent Document 2 Patent No. 5892637

Summary of Invention

Technical Problem

The present invention has been made in view of the above problems, and its purpose is to provide a method for manufacturing a rolled wrapping net and an apparatus for manufacturing to be used for it, wherein cloth material is not only friendly for domestic animals and environment but also compact and can be mounted on an existing roll bale machine without problems, moreover, any trouble is not occurred at the time of pulling out a cloth, at the time of cutting the cloth and at the time of applying brake to a rotating cloth roll.

Solution to Problem

Means to solve the above problems which was adopted by the present inventor will be described as follows with reference to the attached drawings.
That is, in a method for manufacturing a rolled wrapping net formed by winding a net cloth consisting of warp yarns that constitute chain knitting structures arranged at regular intervals in a lateral direction of a warp knitted fabric and insertion yarns that are stretched in an oblique direction or in the lateral direction so as to connect adjacent chain knitting structures each other,the invention is characterized by adapting a method in which cotton yarn is used for warp yarn and insertion yarn in knitting process of the net cloth, the net cloth is wound around a roll core while swinging it in the width direction in a fixed range within the limit of space between chain knitting structures during winding process of the net cloth, and the net cloth is moved by using a guide roller with double spiral grooves or by swinging a guide roller having uneven parts to the left and right, as a method for swinging the net cloth in the width direction while keeping the space between the chain knitting structures.
Moreover, as for the present invention, instead of the above method, in the knitting process of the net cloth, it is possible to adapt a method in which cotton yarn is used for each warp yarn of the net cloth and insertion yarn during knitting process, the net cloth is wound around the roll core while swinging it in the width direction in a fixed range within the limit of space between chain knitting structures during winding process of the net cloth, and the net cloth is moved by swinging a guide bar to the left and right while each chain knitting structure is inserted into a recessed part, by using the guide bar formed with a plurality of recessed parts at prescribed intervals in a lengthwise direction as a method for swinging the net cloth to the left and right while keeping the space between the chain knitting structures.
Moreover, as for the present invention, instead of the above methods, it is also possible to adapt a method in which cotton yarn is used for each warp yarn and insertion yarn in knitting process of the net cloth, the net cloth is wound around the roll core while swinging it in the width direction in a fixed range within the limit of space between chain knitting structures while keeping the space between the chain knitting structures at the time of immediately after knitting process during winding process of the net cloth, and the net cloth is moved by swinging a winding roller to the left and right while each chain knitting structure is inserted into the recessed part, using the guide roller or guide bar formed with a plurality of recessed parts at prescribed intervals in the lengthwise direction, as a method for swinging the net cloth while keeping the space between the chain knitting structures.
Moreover, in case of using the guide bar, food additive having solid water repellency or food wax is arranged in the recessed parts of the guide bar, it is possible to efficiently adhere the food additive or food wax to the cotton yarn by feeding the cotton yarn while adhering the food additive or food wax to the cotton yarn of the chain knitting structures in knitting process of the net cloth.
Moreover, in case of using the guide bar, it is possible to efficiently adhere the food additive or the like to the cotton yarn by sequentially supplying liquid (fluid) food additive having water repellency or food wax in the recessed parts of the guide bar and feeding the cotton yarn of the chain knitting structures while adhering the food additive or food wax to the cotton yarn of the chain knitting structure in the knitting process of the net cloth.
Moreover, as for a method for supplying the liquid food additive having liquid water repellency or food wax in the recessed parts of the guide bar, it is possible to preferably adapt a method for sequentially supplying the food additives or food wax from the liquid injection ports formed in the recessed parts of the guide bar through a supply tube of the food additives or food wax by connecting the supply tube to the guide bar.
Moreover, as a method for efficiently adhering the food additive or food wax, in knitting process of the net cloth, it is also possible to adopt a method for feeding the cotton yarn of the chain knitting structure while being rubbed to the food additive having water repellency or food wax.
Moreover, in the present invention, it is also possible to adapt a method for adhering colorant used as the food additive to the wound the net cloth in the width direction of the net cloth in belt shape.
Moreover, in an apparatus for manufacturing the rolled wrapping net in which the net cloth consists of the warp yarn that constitutes chain knitting structures arranged at regular intervals in the width of warp knitted fabric and the insertion yarn that is stretched in the oblique direction or the lateral direction so as to connect the adjacent chain knitting structures each other, the present invention can also be configured to comprise the winding roller on which the roll core for winding the net cloth is mounted;
the guide roller or guide bar arranged in front of the winding roller and formed with a plurality of recessed parts at prescribed intervals in the lengthwise direction in which each chain knitting structure is inserted; and
a reciprocating mechanism connected to the guide roller or guide bar for swinging the guide roller or guide bar to the left and right.
Thus, it is possible to feed the net cloth while each chain knitting structure is inserted into the recessed part of the guide roller or guide bar and to wind the net cloth around the roll core by swinging it in the width direction while keeping the space between the chain knitting structures.
Moreover, instead of the apparatus for manufacturing, the present invention can be also configured to comprise the winding roller on which the roll core for winding the net cloth is mounted, the guide roller or guide bar arranged in front of the winding roller and formed with a plurality of recessed parts at prescribed intervals in the lengthwise direction in which each chain knitting structure is inserted, and a reciprocating mechanism connected to the winding roller for swinging the winding roller to the left and right.
Thus, it is possible to feed the net cloth while each chain knitting structure is inserted into the recessed part of the guide roller or guide bar and to wind the net cloth around the roll core by swinging it in the width direction while keeping the space between the chain knitting structures.
Moreover, instead of the configuration of the apparatus for manufacturing, the present invention may be configured to comprise the winding roller on which the roll core for winding the net cloth is mounted; and the guide roller arranged in front of the winding roller and provided with provided with double spiral grooves into which each chain knitting structure is to be inserted, thus, it is also possible to feed the net cloth while each chain knitting structure is inserted into a groove and to wind the net cloth by swinging it in the width direction while keeping the space between the chain knitting structures.
Moreover, according to the present invention, since in the rolled wrapping net manufactured by the methods, cotton yarn is used for each warp yarn and insertion yarn of the net cloth, adjacent wound same chain knitting structures are arranged in parallel in the width direction and a radial direction of the roll without overlapping with adjacent and different chain knitting structures, further, the food additive having water repellency or food wax is adhered to the chain knitting structure of the net cloth, the net cloth can be provided with water repellency and separation of cloth can be improved.
Moreover, in the present invention, since, in the rolled wrapping net manufactured by the methods, cotton yarn is used for each warp yarn and insertion yarn of the net cloth, the adjacent wound same chain knitting structures are arranged in parallel in the width and the radial directions of the roll without overlapping with adjacent and different chain knitting structures, further, colorant used as food additive is adhered to the wound net cloth in belt shape in the width direction thereof, residual quantity of the net cloth or the like at the time of use can be confirmed by watching it.

Advantageous Effects of Invention

According to the present invention, since it is possible to produce the rolled wrapping net, in which each chain knitting structure is arranged in parallel in the width direction and the radial direction of the roll, by winding the net cloth made of cotton yarn around the roll core while swinging it in the width direction so as to prevent different chain knitting structures from overlapping each other, it is possible not only to smooth a surface of the cloth roll by uniformizing overlapping state of the cloths, but also to make even long cloth a roll in compact to enable to mount on the existing roll bale machine.
Moreover, the rolled wrapping net manufactured by the method of the present invention, since the chain knitting structures of the net cloth is wound while keeping a constant space, it is possible to pull out the net cloth in parallel while applying tension uniformly to each chain knitting structure at the time of pulling out.
Moreover, even when being mounted on the roll baler machine and used, since it is possible to pull out while applying tension uniformly to each chain knitting structure, cutting of the cloth can also be performed smoothly.
Moreover, since the cloth roll is difficult to rampage in the bucket even when being mounted on the roll baler machine of the stationary type and used, the brake to the cloth roll to rotate becomes easily to work.
In addition, since rampage of the cloth roll in the bucket is suppressed, troubles that cloth ends are entangled and cloth shrinks in the width direction at the time of pulling out can also be prevented. As for the rolled wrapping net manufactured by the methods for manufacturing of the present invention, since natural material that is naturally decomposed and cotton yarn that is also excellent in digestion are used in the warp yarn and the insertion yarn of the cloth, environmental problems and health problems of domestic animals do not occur. Accordingly, the present invention can provide an easy-to-use rolled wrapping net for dairy and livestock farmers.

Brief Description of Drawings

Fig.1 is a perspective view representing whole of a rolled wrapping net in the first embodiment of the present invention.
Fig.2 is an enlarged view for explaining the knitting structures of a net cloth in the first embodiment of the present invention.
Fig.3A and 3B are schematic image views showing a cross-sectional state of the wound chain knitting structures of the rolled wrapping net in the first embodiment of the present invention.
Fig.4A and 4B are explanatory views showing the rolled wrapping net in use in the first embodiment of the present invention.
Fig.5A to 5C are explanatory views showing a method for manufacturing the rolled wrapping net in the first embodiment of the present invention.
Fig.6A and 6B are explanatory views showing a guide bar and a guide roller with recessed parts in the first embodiment of the present invention.
Fig.7A and 7B are explanatory views showing an arrangement of the guide bar and the guide roller with recessed parts in the first embodiment of the present invention.
Fig.8 is an explanatory view showing of a direction of the guide bar with recessed parts in the first embodiment of the present invention.
Fig.9A to 9C are explanatory views showing the method for manufacturing the rolled wrapping net in a modified example of the present invention.
Fig. 10A to 10D are explanatory views showing the method for manufacturing the rolled wrapping net in the first embodiment of the present invention.
Fig.11A and 11B are explanatory views showing a method for adhering a food additive having water repellency to warp yarn in the first embodiment of the present invention.

Preferable Embodiment of the Invention

Description of Embodiment

[First Embodiment]

A first embodiment of the present invention will be described below based on Figs. 1 to 4. It should be noted that in figures, what is indicated by reference number 1 is warp yarn, what is indicated by the reference number C is a chain knitting structure. Moreover, what is indicated by reference number 2 is an insertion yarn, what is indicated by the reference number N is a net cloth. Moreover, what is indicated by the reference number R is a rolled wrapping net, and what is indicated by the reference number P is a roll core.

"Structure of Rolled Wrapping Net"

[1] Basic structure of rolled wrapping net

In the present embodiment, as shown in Figs. 1 and 2, chain knitting structures C1•C2... arranged at regular intervals in a width direction of warp knitted fabric are formed by the warp yarn1•1... consisting of cotton yarn, and the net cloth N is constituted by obliquely stretching the insertion yarn 2 similarly consisting of cotton yarn over adjacent chain knitting structures C1 and C2 so as to connect them each other. And the net cloth N is wound around the roll core P (a paper tube in the present embodiment,) while applying tension thereto, so that the rolled wrapping net R is formed.
Moreover, each chain knitting structure C1·C2... of the rolled wrapping net R is, as shown in Fig.3A and 3B, in a state of being arranged in parallel in the width direction and a radial direction such that same wound chain knitting structures C· C... do not overlap with adjacent different chain knitting structures C'·C'....
Moreover, tension of a loop of each wound chain knitting structure C1·C2... is uniform, it is possible to pull out in parallel each of chain knitting structures C1· C2... arranged at regular intervals while applying tension equally to them at the time of pulling out the net cloth N.
It should be noted that, in the present specification, as shown in Fig. 3A and 3B, a group of chain knitting structures arranged in the same position in the radial direction of the roll (slight deviation due to error is regarded as the same position) is referred to "chain knitting structure on the same layer", a group of the chain knitting structures arranged in a same position in the width direction of the roll (slight deviation due to error is regarded as the same position) is referred to "chain knitting structure on the same row".
By configuring the rolled wrapping net R as described above, when used as a wrapping net such as feed or the like, not only is it safe for domestic animals to eat the net cloth N composed of cotton yarn, since thickness of the roll does not become partially large even if the chain knitting structures C1 and C2...of different net cloth N overlap in the vertical direction, it is also possible to increase winding length of the net cloth N for the same maximum diameter of the roll.
Moreover, as shown in Fig. 4A, even when using the rolled wrapping net R in the roll baler machine of stationary type (a type in which a roll is mounted in a bucket B or on a plurality of rollers and the roll is rotated while pressing a brake roller L against it), since thickness of the roll (surface shape) becomes more uniform than conventional one, problem does not occur that the roll tilts greatly either to the left or right in the bucket B, and the end side of the net cloth N is thereby entangled at the time of pulling out.
Moreover, when it is used in the above roll baler machine of stationary type, since the net cloth N can be pulled out while applying uniform tension to each chain knitting structure C1·C2..., the roll does not rampage (moves violently) in the bucket B, which would also enable the brake roller L to suppress without any problem when stopping rotation of the roll.
Moreover, as shown in Fig. 4B, even when the rolled wrapping net R is used for a bearing type of roll baler machine (a type in which the roll core P is attached to a bearing G and the roll is stopped by a brake pulley Q), since it is possible to make the long net cloth N a roll in compact, the number of times of replacement of the roll to mount it on the roll baler machine can be reduced, which would enable an efficient production of a feed roll.
Moreover, since uniform tension can be applied to each of chain knitting structures C1·C2... at the time of cutting of the net cloth N, cutting of the net cloth N can be properly performed as well.

[2] As for the and chain knitting structure

[2-1] Material of warp yarn and length of chain knitting structure

Next, each constituent element of the rolled wrapping net R will be described. First, for the warp yarn 1, though in the present embodiment is used 100% cotton yarn, it is also possible to use blended yarn blended with highly digestible plant fibers or the like, if it is yarn material made from cotton as main raw material. Moreover, in the present embodiment, though a plurality of cotton yarns is bundled and used as the warp yarn 1, thickness and number of cotton yarns to be used can be appropriately changed depending on required strength or the like. Moreover, length of each chain knitting structures C1 and C2 ... is desirable to be uniform, but there is no problem even if there is slight error.

[2-2] Space between adjacent chain knitting structures

As for the chain knitting structure C formed from the warp yarn 1,if the space between the adjacent chain knitting structures C·C...is too small, number of the chain knitting structure C·C... that can be arranged on the same layer becomes small, it makes it difficult to make the roll compact, and when too wide, mesh becomes too wide which make it difficult to form the feed roll. Therefore, it is preferable to perform knitting such that the space between the chain knitting structures C·C... becomes in the range of 10 to 30 mm.
It should be noted that, as for number of the same chain knitting structure C·C... to be arranged on the same layer, it is preferable to be five or more (preferably 10 or more), the width of one of the chain knitting structure C is preferably 1.0 to 3.0 mm in a state of applying tension.

[3] As for insertion yarn

[3-1] Insertion yarn material

As for the insertion yarn 2, in the present embodiment, though is used 100% cotton yarn, it is also possible to use blend yarn blended with highly digestible plant fibers or the like, if the yarn material is made of cotton as main raw material.
Moreover, in the present embodiment, since strength of the warp yarn 1 is not be required more than that of the insertion yarn 2, here, the number of cotton yarn used in the insertion yarn 2 is one, the thickness and number of cotton yarn to be used can be appropriately changed within the range of strength that can withstand a tendering apparatus of the roll baler machine.
As for the thickness of the yarn 2, it is preferable to be as thin as possible so as not to be bulky during winding.

[3-2] Length of the insertion yarn

In the present embodiment, as shown in Fig.2, the insertion yarn 2 is interknitted so as to have yarn tension of an extent that does not shorten a space of straight line between intersections J·J, so that the insertion yarn 2 become to be loosened in the net cloth N at the time immediately after knitting. Thus, at the time of winding of the net cloth N, since such phenomenon can be suppressed that the net cloth N subjected to tension in a length direction shrinks in width direction, therefore, it is possible to wind the net cloth N around the roll core P, while keeping the space between chain knitting structure C, C ... at the time immediately after knitting.

[3-3] Direction of the insertion yarn

As for direction of stretching of the insertion yarn 2, in the present embodiment, though it stretches zigzag over the adjacent chain knitting structures C•C...in an oblique direction, not only in the oblique direction, it can also stretch in a lateral direction. Though it is also possible to stretch over the adjacent chain knitting structures C·C...by a plurality of insertion yarns 2, since the net cloth N to which tension is applied in the length direction is easily shrunk in the width direction, it is preferable to constitute to stretch by one insertion yarn like the present embodiment.

[4] As for positional relationship of wound chain knitting structures

[4-1] Chain knitting structures on the same layer

As for a positional relationship of the chain knitting structures C·C... on the same layer in the rolled wrapping net R, as shown in FIG. 3A and 3B, though it is desirable that size of a gap between the same chain knitting structures C·C...is uniform, if the size of the gap between the chain knitting structures C·C...is smaller than the width of one chain knitting structure, there would be no problem even if there is slight error in position of the chain knitting structures C·C...,and there would be no problem even if the gap between the chain knitting structures C·C... is slightly different in different layers.
Moreover, as for the gap between different chain knitting structures C·C' ...in the chain knitting structures C·C... on the same layer, in the present embodiment, as shown in Fig.3A and 3B, numbers of the chain knitting structures arranged on the same layer are maximized by making the width of gap between the chain knitting structures C·C' smaller than the width of one chain knitting structure, so that the net cloth N can be wound up more without changing roll diameter.
Moreover, as for the gap between different chain knitting structures C·C' on the same layer, there is no problem even if it is larger than the gap between the same different chain knitting structures C·C as long as they are not overlapped each other.

[4-2] Chain knitting structures on the same row

Moreover, as for the chain knitting structures C·C... on the same row, as shown in FIG. 3A and 3B, though it is desirable that the chain knitting structure C on the upper side is arranged on the chain knitting structure C on the lower side, there is no problem even if a part of the chain knitting structures C·C... on the upper side drops into the gap between the chain knitting structures C·C on the lower side. In particularly, the part of the chain knitting structures C·C... on the upper side easily drops into the gap between the chain knitting structures C·C on the lower side, when applying pressure against the roll during winding of the net cloth N.

[5] As for food additives having water repellency or food wax

Moreover, in the present embodiment, water repellency is imparted to the net cloth composed of cotton yarn N by adhering food additive having water repellency to the chain knitting structure C of the net cloth N.
Thus, even if the feed roll wrapped with net cloth N is placed on the soil with moisture, since bacteria and mold decomposing cellulose are less likely to adhere, problem that strength of yarn of the net cloth N is reduced by bacteria or the like which leads to collapse of the feed roll can be suppressed.
Of course, it is also possible to adhere food additive having water repellency to both the warp yarn 1 and the insertion yarn 2.
It should be noted that as food additive having the water repellency, anything is usable as long as it is not harmful for domestic animals to eat, for example, vegetable tallow and sugarcane waxes, plant-based waxes such as palm wax, or animal-based waxes such as beeswax and spermaceti are usable.
On the other hand, mineral waxes such as montan wax or the like are given as examples of harmful ones. Moreover, since slipping properties of the net cloth N are improved (can reduce frictional resistance) by rubbing food wax and food oil, the net cloth N is easily separated from the cloth roll when pulling out it therefrom.
Moreover, when adhering food additive having water repellency to the chain knitting structures C of the net cloth N as described above, food additives having water repellency can be also used in a state of being mixed with yeast and bacteria for mold protection.
In that case, by using wax of low melting point as a food additive having water repellency, it is possible to adhere to the net cloth N without killing yeast and bacteria with heat. As a functional material for mixing with food additives having water repellency, materials other than antifungal agent (e.g., PH regulator, etc.) can also be used.
Incidentally, though a method comprising process of dissolving powder of antifungal agent or PH regulator or the like in liquid and immersing the cotton yarn in liquid, or a method for adhering liquid to the cotton yarn by spraying is also considered, in these methods, since it is necessary to use a dryer, a dyeing machine and a sprayer, manufacturing process is complicated, manufacturing efficiency and manufacturing cost are likely be expensive.
Moreover, there is a risk as well that temperature condition of drying could cause to kill antimolding bacteria and yeast.

[6] As for colorant

In the present embodiment, as for the net cloth N, colorant used as a food additive is adhered in belt shape to the net cloth N which is wound around roll core P in the width direction. Thus, residual quantity of the feed roll can be confirmed as a mark by watching the colorant adhered to the net cloth N at the time of forming the feed roll. It should be noted that as the colorant, for example, food tar-based pigment and safflower pigment, gardenia pigment, caramel pigment or the like can be used as long as they are not harmful for domestic animals to eat.

" Method for manufacturing the rolled wrapping net"

[1] As for knitting process

Next, a method for manufacturing the rolled wrapping net will be described. It should be noted that, as for Figs.5 to 7, the insertion yarn is omitted to facilitate explaining movement of the net cloth. First, in knitting process of the net cloth, knitting of the net cloth is performed by using cotton yarn for each warp yarn and insertion yarn and by forming chain knitting structures from the warp yarn and stretching the insertion yarn obliquely so as to connect these chain knitting structures.
At that time, the warp yarn for forming the chain knitting structure is fed while being rubbed to food additive having water repellency, so that food additive having water repellency can be adhered to the chain knitting structure.

[2] As for winding process

And, after completion of knitting of the net cloth, it goes into the winding process of the net cloth in succession. In the winding process of the net cloth, as shown in Fig.5A to 5C, the net cloth is wound around the roll core within the space between the chain knitting structures, while swinging it in a fixed range in the width direction of the roll and keeping the space between the chain knitting structures of the net cloth in a state at the time of immediately after the knitting process.
At that time, by applying pressure against the net cloth wound around the roll core, the net cloth is compressed and the gap between yarns is filled, the rolled wrapping net is thereby made compact.

[3] As for a method for swinging the net cloth in the width direction

[3-1] A method for swinging a guide bar with recessed parts to the left and right

Next, a specific method for each above process will be described. First in the present embodiment, in winding process, as the method for swinging the net cloth in the width direction of the roll while keeping the space between the chain knitting structures, the guide bar E formed with recessed parts D·D...to which the chain knitting structures can be inserted at regular intervals in the lengthwise direction is used as shown in Fig.6A.
Thus, it is possible to move the net cloth while keeping the space between the chain knitting structures by swinging the guide bar E to the left and right (in the lengthwise direction), while each chain knitting structures is inserted in prescribed recessed part D·D...of the guide bar E.
Moreover, as for the space between the recessed parts D·D..., though it is formed at a narrow space so as to correspond to a variety of lap nets in which spaces between chain knitting structures are different, when using in the net cloth of a specific structure,it is possible to form the recessed parts D·D... at wide space as well so as to match with space between the chain knitting structures of the net cloth.
Depth and width of the recessed part D of the guide bar E can be appropriately changed as well so as to match with the chain knitting structure of the net cloth.

[3-2] Method for swinging the winding roller to the left and right

Moreover, as for a method for swinging the net cloth to the left and right while keeping the space between the chain knitting structures, instead of the method for swinging the guide bar E to the left and right, it is also possible to adapt a method for swinging the winding roller to the left and right by using the above guide bar E or a guide roller A formed with a plurality of recessed parts in the lengthwise direction as shown in Fig.6B, while each chain knitting structure is inserted into the recessed part D·D....
Moreover, in case of swinging the winding roller to the left and right as described above, besides the method for swinging only the winding roller to the left and right, it is also possible to adapt a method for swinging stand on which the winding roller is installed and all to the left and right.
Moreover, in the hollow winding system shown in Fig.7A and Fig.8, though the winding roller is a rotary shaft roll on which core P (paper tube, etc.) is mounted, in the winding method for pressure type shown in FIG. 7B, it is touch rollers T·T rotating while being in contact with the rolled wrapping net R.

[3-3] Arrangement of the guide bar or guide roller

As for the arrangement of the guide bar E and the guide roller A with the recessed parts D, in the hollow type winding system shown in Fig.7A, they are arranged close to the rolled wrapping net R wound around the roll core P (a position closer to the winding roller than that of the guide roller formed with no recessed portion), in the pressure type winding system shown in Fig.7B, it is preferable to arrange close to the touch rollers T·T. In particular, in the pressure type winding system shown in Fig.7B, since it is not necessary to move the guide bar E and the guide roller A in accordance with expansion of the wound rolled wrapping net R, production is facilitated.

[3-4] Modified example of the guide roll

Moreover, instead of the method for swinging the guide bar E and the guide roller A to the left and right, it is also possible to use a guide roller with double helical grooves. Specifically, recessed parts are formed at prescribed intervals in the lengthwise direction of the guide roller by forming the double helical grooves in the guide roller, the net cloth can be reciprocated in the width direction by rotating the guide roller while each chain knitting structures is inserted in these recessed parts.

[4] Swinging speed of the net cloth to the left and right

As for the swinging speed of the net cloth in the width direction of the roll, in the present embodiment, it is set such that a constant gap is formed between the chain knitting structures on the same layer in parallel with each other in the width direction of the roll and the gap between the chain knitting structures on the same layer becomes smaller than the width of one chain knitting structure.
The speed of the net cloth can be calculated from the space between the chain knitting structures, width of the chain knitting structure, number of windings of the same chain knitting structure on the same layer, diameter and length of outer periphery of the roll, and the winding speed of the net cloth or the like.
Moreover, in the present embodiment, the swinging speed of the net cloth in the width direction of the roll, as shown in FIG. 5A to 5C, is set such that the same chain knitting structures are arranged in order in width the direction of the roll (in a direction of layer) forming a gap smaller than the width of one chain knitting structure between them. Thus, as shown in Fig.3A, it is possible to wind the net cloth such that the chain knitting structure are arranged in the order of (1) to (25).
On the other hand, the swinging speed of the net cloth in the width direction of the roll can be set as well such that the chain knitting structures are arranged forming a gap larger than the width of one chain knitting structure between them, in which case, as shown in Fig. 9A to 9C, the chain knitting structures are wound such that a gap corresponding to approximately one chain knitting structure worth is formed in the width direction (the direction of layer) when the net cloth is moved forwardly and are wound such that the chain knitting structure is fit in the gap formed at the time of being moved forwardly at the time of being moved backwardly. Thus, as shown in Fig.3B, the net cloth can be wound such that the chain knitting structure is arranged in the order of (1) to (25).
Moreover, in the present embodiment,though the gap between the same wound chain knitting structures is adjusted by decreasing gradually the moving speed of the net cloth, as winding amount of the net cloth to the roll core increases as shown in FIG. 10A to 10C,it is also possible to adjust continuously the moving speed of the net cloth, as winding amount of the net cloth to the roll core increases.
It should be noted that, when the winding amount of the net cloth is increased, since length of one turn of roll becomes long, the gap between the chain knitting structures gradually increases when moving the net cloth at the same speed.

[5] As for a method for pressing the wound net cloth

Moreover, as for a method for pressing the net cloth wound around the roll core during winding process of the net cloth, in the present embodiment, though is adapted a method for pressing the press roller from the upper side against the roll fixed to the bearing, other methods may be adapted, for example, can be adapted as well a method in which the roll is secured to a vertically slidable bearing and a rod-shaped weight is inserted into the roll core so as to press the roll against a mounting roll arranged underside.

[6] As for method for adhering food additives having water repellency

[6-1] A method for rubbing the warp yarn against solid food additive or food wax

Moreover, as for the method for adhering solid food additive W having water repellency (in the present embodiment, animal wax) or food wax to the warp yarn at the time of knitting of the net cloth, it is possible to adapt a method for feeding the cotton yarn of the chain knitting structure while rubbing it against solid food additive W or food wax which is each arranged in the recessed part D of the guide bar E as shown in Fig. 11A.
Besides it, such methods are also adaptable as a method for feeding the warp yarn through a hollow portion of food additive formed into a doughnut shape or the like while rubbing it against food additive or the like, or a method for pressing food additive or the like from the lower or upper side against the warp yarn, and a method for adhering powdery food additive to the warp yarn.

[6-2] A method for adhering liquid (fluid) food additive or food wax to the warp yarn

On the other hand, as for the method for adhering liquid food additive or food wax, it is possible to adapt a method, in which liquid (fluid) food additive having water repellency or food wax is sequentially supplied in the recessed part D of the guide E, and cotton yarn of the chain knitting structure is fed while adhering the food additive or food wax to cotton yarn of the chain knitting structure at the time of knitting of the net cloth.
Moreover, as for a method for supplying liquid food additive having a liquid water repellency or food wax in the recessed part D of the guide bar E,
It is possible to preferably adapt a method, in which a supply tube of food additives or food wax is connected to the guide bar E having a liquid injection port formed in the recessed part D and a cavity connected thereto, and food additives or food wax is sequentially supplied to the liquid injection port formed in the recessed part D from the supply tube.
Apart from that, as for a method for adhering liquid food additive or food wax, it is also possible to employ a method for contacting the warp yarn with sponge or the like impregnated with the liquid food additive or the food wax.

[7] As for a method for adhering colorant

Moreover, in the present embodiment, the colorant used as food additive is adhered to the wound net cloth in belt shape in the width direction, specifically, the colorant dissolved in liquid having volatility (alcohol, etc.) is adhered to the net cloth by spraying it through a plate member provided with a rectangular window(s).
Moreover, as for a method for adhering colorant to the net cloth, it is also possible to use food additive as liquid colorant and partially dye the warp yarn of the net cloth at prescribed intervals by operating a pump so as to blow out liquid colorant from pouring ports of the guide bar E intermittently as shown in Fig.11B.
Thus, it is possible to use a colored part of the net cloth as a mark (e.g., a mark to inform an end of the cloth).

"Apparatus for manufacturing the rolled wrapping net"

[1] As for basic structure

Next, it will be described an apparatus for manufacturing the rolled wrapping net R. In the present embodiment, as shown in FIG. 7, it is configured such that there are arranged the winding roller F to which the roll core P is attached as a winding mechanism of a warp yarn knitting machine(not shown) for knitting the net cloth N and the guide bar E formed with a plurality of recessed parts D·D... in front of the winding roller F, in addition, a reciprocating mechanism for swinging the guide bar E to the left and right (not shown) is connected to the guide bar E.
Thus, since it is possible to feed the net cloth N while swinging the guide bar E to the left and right by the reciprocating mechanism while each chain knitting structure C·C...is inserted into the recessed part D·D... of the guide bar E, the net cloth N can be efficiently wound around the roll core P by feeding and swinging the net cloth N in the width direction while keeping the space between the chain knitting structures.

[2] As for guide bar

[2-1] Recessed part of the guide bar

Next, it will be described each constituent element.
First, as for recessed part D of the guide bar E, in the present embodiment, as shown in Fig.6 A, a large number of metal plate members M·M...are arranged at prescribed intervals and fixed to places where the net cloth N of the base material is to be contact with, further these metal plate members M·M... are connected by a metal wire member K.
Thus, it is possible to form the recessed part D·D... into which the chain knitting structure can be inserted between each metal plate members M·M... at the prescribed intervals in the lengthwise direction of the guide bar E, and it is also possible to form the recessed part D·D...having prescribed depth by virtue of the metal wire member K being at the bottom thereof.
It should be noted that, as for the method for forming the recessed part D·D... of the guide bar E, when metallic material is used for the guide bar E, it can also be formed by cutting machining or the like, when plastic material is used, it can also be formed by injection molding or the like.

[2-2] Direction of the tip of the guide bar

As for the direction of the tip of the guide bar E, as shown in FIG. 8 in the present embodiment, the guide bar E is fixed such that an angle formed by the direction of the tip of the guide bar E formed with the recessed parts D as shown in Fig.8 and a feeding direction of the net cloth N from the guide bar E is less than 90°.Thus, problems that insertion the yarn 2 of the net cloth N is hooked in between the recessed parts D•D... of the guide bar E and cut can be thereby prevented from being caused.

[3] As for example of a modified guide bar

Moreover, as for the guide bar E, instead of it, a guide roller A formed with a plurality of recessed parts D·D... at prescribed intervals in the length direction as shown in Fig. 6 B can be used as well.
In this case, it is possible to feed the net cloth while swinging it to the left and right by the reciprocating mechanism while each chain knitting structure C·C...is inserted in the recessed part D·D... of the guide roller A.

[4] As for the reciprocating mechanism

As for the reciprocating mechanism, in the present embodiment, though it comprises of a drive motor, a cam for moving the guide bar E by converting rotational motion of the drive motor into linear motion and an elastic member for pressing the guide bar E against the cam, an actuator for reciprocating linear motion (for example, an electric cylinder, a hydraulic cylinder, and a linearly moving type of motor or the like) is also selectable.

[5] As for a modified example of arrangement of the reciprocating mechanism

As for the reciprocating mechanism, it can also be provided so as to be connected with the winding roller F, in which case, the net cloth N is fed while each chain knitting structure is inserted in the recessed part D of the guide bar E, and the net cloth can be wound around the roll core P by swinging the winding roller F to the left and right so as to swing the net cloth N in the width direction while keeping the space between the chain knitting structures.

[6] As for a modified example without using the reciprocating mechanism

As for the apparatus for manufacturing the rolled wrapping net R, a configuration without using the reciprocating mechanism can be also adapted, specifically, it can also be configured by arranging a guide roller with double helical grooves in front of the winding roller.

[Examples]

"Verification tests of the effect"

Next, verification tests of the effect of the present invention will be described. In these tests, moving speed of the net cloth for swinging it in the width direction of the roll was calculated from the winding speed of the net cloth, the space between the chain knitting structures, the width of the chain knitting structure, number of windings of the same chain knitting structure on the same layer, and the diameter and the length of the outer periphery of the roll, and it was verified whether it is possible actually to wind so as to form a fixed gap between the chain knitting structures on the same layer.

"Example 1"

In this embodiment, the moving speed of the net cloth was calculated as 0.418 mm / sec by the following equation, where the winding speed was 600 cm / min, the interval of the chain knitting structure was 23 mm, the width of the chain knitting structure was 1.8 to 2.0 mm, number of windings of the same chain knitting structure on the same layer was 11, the diameter of the roll was 16 cm and the length of the outer periphery of the roll was about 50 cm.
And as a result of winding of the net cloth, it was actually confirmed that the net cloth could be wound so as to form a gap smaller than the width of one chain knitting structure between the chain knitting structure on the same layer. $\begin{array}{l} Number of windings per minute 600 cm / 50 cm = 12 times \\ Time required for winding 11 times 60 \sec \times 11 / 12 ≒ 55 \sec \\ moving speed of the net cloth 23 mm / 55 \sec ≒ 0.418 mm / \sec \end{array}$

"Example 2"

In this embodiment, the moving speed of the net cloth was calculated as 0.348 mm / sec by the following equation, where the winding speed was 600 cm / min, the interval of the chain knitting structure was 23 mm, the width of the chain knitting structure was 1.8 to 2.0 mm, number of windings of the same chain knitting structure on the same layer was 11, the diameter of the roll was 19 cm and the length of the outer periphery of the roll was about 60 cm.
And as a result of winding of the net cloth, it was actually confirmed that the net cloth could be wound so as to form a gap smaller than the width of one chain knitting structure between the chain knitting structure on the same layer. $\begin{array}{l} Number of windings per minute 600 cm / 60 cm = 10 times \\ Time required for winding 11 times 60 \sec \times 11 / 10 = 66 \sec \\ Moving speed of the net cloth 23 mm / 66 \sec ≒ 0.348 mm / \sec \end{array}$

Reference Signs List

1···warp yarn, 2··· insertion yarn, R··· rolled wrapping net, N···net cloth, C··· chain knitting structure, P··· roll core, F··· winding roller, J···point of intersection, B··· bucket, L···brake roller, G···bearing, Q···brake pulley, E···guide bar, A··· guide roller, D···recessed part, T···touch roller, W···food additive, U···base material, M···metal plate, K···metal wire member

Claims

A method for manufacturing a rolled wrapping net formed by winding a net cloth consisting of warp yarn that constitutes chain knitting structures arranged at regular intervals in a lateral direction of a warp knitted fabric and insertion yarn that is stretched in an oblique direction or in the lateral direction so as to connect adjacent chain knitting structures each other, wherein;
cotton yarn is used for each warp yarn and insertion yarn in knitting process of the net cloth,

the net cloth is wound around a roll core while swinging it in a width direction in a fixed range within the limit of space between the chain knitting structures in winding process of the net cloth, and

the net cloth is moved by using a guide roller with double spiral grooves or by swinging a guide roller having uneven parts to the left and right, as a method for swinging the net cloth in the width direction while keeping the space between the chain knitting structures.
A method for manufacturing a rolled wrapping net formed by winding a net cloth consisting of warp yarn that constitutes chain knitting structures arranged at regular intervals in a lateral direction of a warp knitted fabric and insertion yarn that is stretched in an oblique direction or in the lateral direction so as to connect adjacent chain knitting structures each other, wherein;
cotton yarn is used for each warp yarn and insertion yarn in knitting process of the net cloth,

the net cloth is wound around a roll core while swinging it in a width direction in a fixed range within the limit of space between the chain knitting structures in winding process of the net cloth, and

the net cloth is moved by swinging a guide bar to the left and right while each chain knitting structure is inserted into a recessed part, by using the guide bar formed with a plurality of recessed parts at prescribed intervals in a lengthwise direction, as a method for swinging the net cloth to the left and right while keeping the space between chain knitting structures.
A method for manufacturing a rolled wrapping net formed by winding a net cloth consisting of warp yarn that constitutes chain knitting structures arranged at regular intervals in a lateral direction of a warp knitted fabric and insertion yarn that is stretched in an oblique direction or in the lateral direction so as to connect adjacent chain knitting structures each other, wherein;
cotton yarn is used for each warp yarn and insertion yarn in knitting process of the net cloth,

the net cloth is wound around the roll core while swinging it in a width direction in a fixed range within the limit of space between the chain knitting structures while keeping a space between the chain knitting structures at the time of immediately after knitting process in winding process of the net cloth, and

the net cloth is moved by swinging a winding roller to the left and right while each chain knitting structure is inserted into a recessed part, by using a guide roller or guide bar formed with a plurality of recessed parts at prescribed intervals in a lengthwise direction, as a method for swinging the net cloth to the left and right while keeping the space between the chain knitting structures.
The method for manufacturing the rolled wrapping net according to claim 2 or 3, wherein;
in case of using the guide bar, solid food additive having water repellency or food wax is arranged in the recessed parts of the guide bar, and the cotton yarn of the chain knitting structure is fed while adhering the food additive or food wax to it in the knitting process of the net cloth.
The method for manufacturing the rolled wrapping net according to claim 2 or 3, wherein;
in case of using the guide bar, liquid food additive having water repellency or food wax is sequentially supplied in the recessed parts of the guide bar, and

the cotton yarn of the chain knitting structure is fed while adhering the food additive or food wax to it in the knitting process of the net cloth.
The method for manufacturing the rolled wrapping net according to claim 5, wherein;
wherein the food additive or the food wax is sequentially supplied from liquid injection ports formed in the recessed parts of the guide bar through a supply tube of the food additives or the food wax by connecting the supply tube to the guide bar.
The method for manufacturing the rolled wrapping net according to any one of claims 1 to 3, wherein;
the cotton yarn of the chain knitting structure is fed while being rubbed to food additive having water repellency or food wax in the knitting process of the net cloth.
The method for manufacturing the rolled wrapping net according to any one of claims 1 to 5, wherein;
colorant used as food additive is adhered to wound net cloth in belt shape in the width direction of the net cloth in the winding process.
An apparatus for manufacturing a rolled wrapping net for winding a net cloth consisting of warp yarn that constitutes chain knitting structures arranged at regular intervals in a lateral direction of a warp knitted fabric and insertion yarn that is stretched in an oblique direction or in the lateral direction so as to connect adjacent chain knitting structures each other,
the apparatus for manufacturing the rolled wrapping net comprising;
a winding roller on which a roll core for winding the net cloth is mounted;
a guide roller or guide bar arranged in front of the winding roller and formed with a plurality of recessed parts at prescribed intervals in a lengthwise direction in which each chain knitting structure is to be inserted; and
a reciprocating mechanism connected to the guide roller or guide bar for swinging the guide roller or guide bar to the left and right,
the apparatus capable of feeding the net cloth while each chain knitting structure is inserted into a recessed part of the guide roller or guide bar and winding the net cloth around the roll core by swinging it in a width direction while keeping a space between the chain knitting structures.
An apparatus for manufacturing a rolled wrapping net for winding a net cloth consisting of warp yarn that constitutes chain knitting structures arranged at regular intervals in a lateral direction of a warp knitted fabric and insertion yarn that is stretched in an oblique direction or in the lateral direction so as to connect adjacent chain knitting structures each other,
the apparatus for manufacturing the rolled wrapping net comprising;
a winding roller on which a roll core for winding the net cloth is mounted;
a guide roller or guide bar arranged in front of the winding roller and formed with a plurality of recessed parts at prescribed intervals in a lengthwise direction in which each chain knitting structure is inserted; and
a reciprocating mechanism connected to the winding roller for swinging the winding roller to the left and right,
the apparatus capable of feeding the net cloth while each chain knitting structure is inserted into a recessed part of the guide roller or guide bar and winding the net cloth around the roll core by swinging it in a width direction while keeping a space between the chain knitting structures.
An apparatus for manufacturing a rolled wrapping net for winding a net cloth consisting of warp yarn that constitutes chain knitting structures arranged at regular intervals in a lateral direction of a warp knitted fabric and insertion yarn that is stretched in an oblique direction or in the lateral direction so as to connect adjacent chain knitting structures each other,
the apparatus for manufacturing the rolled wrapping net comprising;
a winding roller on which a roll core for winding the net cloth is mounted; and
a guide roller arranged in front of the winding roller and provided with double spiral grooves into which each chain knitting structure is to be inserted and,
the apparatus capable of feeding the net cloth while each chain knitting structure is inserted into the groove and winding the net cloth by swinging it in a width direction while keeping a space between the chain knitting structures.
A rolled wrapping net formed by winding a net cloth consisting of warp yarn that constitutes chain knitting structures arranged at regular intervals in a lateral direction of a warp knitted fabric and insertion yarn that is stretched in an oblique direction or in the lateral direction so as to connect adjacent chain knitting structures each other, wherein;
cotton yarn is used for each warp yarn and insertion yarn of the net cloth, adjacent wound same chain knitting structures are arranged in parallel in the width direction and a radial direction of a roll without overlapping with adjacent different chain knitting structures, further, food additive having water repellency or food wax is being adhered to the chain knitting structure of the net cloth.
A rolled wrapping net formed by winding a net cloth consisting of warp yarn that constitutes chain knitting structures arranged at regular intervals in a lateral direction of a warp knitted fabric and insertion yarn that is stretched in an oblique direction or in the lateral direction so as to connect adjacent chain knitting structures each other, wherein;
cotton yarn is used for each warp yarn and insertion yarn of the net cloth, adjacent wound same chain knitting structures are arranged in parallel in the width direction and a radial direction of a roll without overlapping with adjacent different chain knitting structures,
further, colorant used as food additive is being adhered to wound net cloth in belt shape in a width direction of the net cloth.