Carcass packaging material

Abstract

To provide a carcass packaging material with which a carcass coating process is significantly improved, the process including a step of cutting cloth wound around a long roll or the like.SOLUTION: A carcass packaging material for packaging carcass has knitted fabric obtained by circularly knitting ground yarn, wherein identifiable marker yarn is knitted with the ground yarn at each prescribed interval in a length direction of the knitted fabric. When cutting the carcass packaging material itself to a predetermined length, there is provided a configuration in which the marker yarn serving as a reference of a cutting place is knitted, thus an operator can easily advance a cutting operation in a predetermined cutting place. Further, a purse-shape can be made by fastening the marker yarn, thereby exhibiting effects of largely reducing a cutting part, and of significantly reducing even yarn waste causing mixing of foreign matters.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a carcass packaging material for packaging and handling carcasses obtained by slaughtering and butchering cattle, pigs, etc. [Background technology]

[0002] Livestock such as cattle for meat are usually inspected individually and in their entirety, and then processed into carcasses in which the organs, backbone, head, and other parts are removed during slaughtering, with the meat portion being roughly half the total. Such carcasses are attached with hooks and stored in refrigerators or freezers. Sometimes the carcasses are distributed in this state, and even when the carcasses are cut into blocks, the carcasses are covered with packaging material for packaging carcasses for reasons of hygiene, traceability, and the like (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3121979 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, when manufacturing such carcass packaging materials, a base fabric is made from fiber yarn such as polyester fiber using a knitting machine, and from the viewpoint of mass production in particular, a circular knitting machine is used to make a tubular fabric. Normally, a tubular fabric is in the form of a long continuous web, and is therefore often folded in half and wound up on a roll for shipping.

[0005] When using a cylindrical knitted fabric as a surface covering for a carcass, it is necessary to cut the rolled fabric to the length to be used for one carcass. The width of the body used to wrap the carcass is set to 30-150 cm, and the length is set to 50-500 cm. For this reason, workers cut the cloth from the roll to the specified length to wrap the carcass with scissors, etc. Although it is not necessary to cut with high precision because the dimensions can be rough, it is necessary to cut carefully so as not to generate extra lint or dust, and lint in particular can become foreign matter if it adheres to the meat. At the same time, from the perspective of ensuring the safety of the meat, it is required to cut the fabric while avoiding the introduction of mold bacteria, and the process of covering the carcass needed to be improved. In addition, the fabric is highly elastic when cutting to the specified length, and cutting work by measuring the length by multiple workers makes it difficult to uniform the length of the fabric, and fabric shorter than the length of the carcass cannot be used, so it is inevitable to cut the fabric to a longer length, which causes fabric loss and measurement work, which are also issues.

[0006] SUMMARY OF THE PRESENT DISCLOSURE In view of the above technical problems, the present invention aims to provide a carcass packaging material that significantly improves the carcass wrapping process, including cutting of fabric wound on a long roll or the like. [Means for solving the problem]

[0007] In order to solve the above-mentioned technical problems, the carcass packaging material of the present invention is a carcass packaging material for packaging carcasses, which is characterized in that it has a knitted fabric made by circular knitting ground yarn, and that marker yarns that are distinguishable from the ground yarns are woven into the knitted fabric at predetermined intervals in the longitudinal direction of the knitted fabric.

[0008] In this specification, the carcass packaging material is a packaging material for packaging carcasses, and refers to a material provided as a long tubular knitted fabric and cut to a predetermined length before covering the surface of the carcass. The long tubular knitted fabric is usually wound into a roll or the like, but is not limited to this form of provision. In this specification, the carcass refers to a form in which the organs of livestock such as cows and pigs have been removed and the edible meat, including the bones, is cut, but it can also be other animals, birds, fish, etc. In addition, in this specification, the carcass also includes partial meat. The predetermined interval means a constant interval in the length direction of the tubular knitted fabric, and in the case of cows, one means a certain interval between 1.5 m and 6.0 m that is suitable for the normal carcass size, and the other may be an interval for each unit of the size used. For example, each unit of the size used may be an interval of any unit such as every 1 m, every 2 m, every 1 shaku, or every 2 shaku. In this specification, the length direction is the axial direction of a circular knitting machine for fabrics knitted on a circular knitting machine, and is the longitudinal direction of the fabric when wound into a roll.

[0009] As for the marking yarn that can be distinguished from the ground yarn, one method is to use a colored yarn of a different color from the ground yarn, and generally, a colored yarn such as red, blue, green, or black can be used for a white or colorless ground yarn. Another method is to use a yarn of a different fiber material, and for example, when a polyester fiber yarn is used as the ground yarn, other polymer fibers such as polyolefin or natural fibers are used as the marking yarn. When using this yarn of a different fiber material, the color can be made different from that of the ground yarn, or the diameter of the yarn can be changed from that of the ground yarn. Furthermore, long fibers and short fibers can be switched. As an example of using a yarn of a different fiber material, there is a method of using a water-soluble fiber yarn, and it is also possible to cut the tubular knitted fabric at a predetermined position by supplying water.

[0010] The main use of the mark yarn that is distinguishable from the ground yarn is as a marker for an operator to cut the tubular fabric along the mark yarn or near the mark yarn using scissors or a cutter. The mark yarn itself may be detected by a sensor and linked to a cutting means such as a laser beam. Another use of the mark yarn that is distinguishable from the ground yarn is to pull the mark yarn out of the fabric and cut the fabric at the position where the mark yarn was present. This pulling out of the mark yarn from the fabric may be over the entire circumference of the tubular fabric or may be a part of the circumference. When a tubular fabric is actually knitted with a circular knitting machine, the extension direction of the yarn draws a spiral, so that one revolution of the yarn is slightly shifted in the length direction by the number of yarns knitted at the same time. After the mark yarn is pulled out of the fabric, the packaging material can be separated by cutting only the part that is shifted in the length direction. The length of the cut part is approximately 10% or less, and the generation of lint is also 10% or less. This is a significant step in preventing foreign matter contamination.

[0011] Also, the mark yarn can be single or multiple. When knitting a tubular fabric with a circular knitting machine, the operation is to switch the number of yarns fed simultaneously to the mark yarn using a yarn feed changer (auto striper) or the like. When only one yarn is changed to a colored yarn, there is one mark yarn, and when multiple yarns, for example, four yarns, are changed at the same time, the mark yarn can be configured to consist of four. Since the yarn feed changers used in the circular knitting machine can be controlled independently, it is possible to configure, for example, two mark yarns that the operator can recognize and one mark yarn that is pulled out to separate the knitted fabric by cutting it.

[0012] Furthermore, in the carcass packaging material of the present invention, a through thread that crosses between the inside and outside of the knitted fabric can be arranged in parallel with the above-mentioned marking thread. By providing a through thread that crosses between the inside and outside of the knitted fabric, the opening can be narrowed with the thread like the tightening part of a purse. The through thread may be arranged by switching threads during knitting on a circular knitting machine like the marking thread, or it may be added in a separate operation. The through thread may be a single thread or a colored thread, or it may be composed of multiple threads or threads of different fibers.

[0013] In addition, the carcass packaging material of the present invention can also be configured to have a knitted fabric made by circularly knitting ground yarn, and a knitting structure different from the knitting structure of the knitted fabric can be knitted at predetermined intervals in the length direction of the knitted fabric. Even if the knitted fabric structure is changed, the difference in gloss, feel, appearance, etc. of the changed part can function as a marker, and the length in the length direction can be made relatively longer and configured in a belt shape than when the supply of yarn is changed. As an example of the knitting method, it is possible to construct a basic knitted fabric with flat knitting, while temporarily changing the knitting structure to jacquard knitting, mesh knitting, pile knitting, etc., and then returning it to the original state. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is a schematic diagram for explaining a state in which the carcass packaging material of the first embodiment of the present invention is used. [Diagram 2] FIG. 1 is a schematic perspective view showing a carcass packaging material according to a first embodiment of the present invention provided in a roll. [Diagram 3] FIG. 1 is a schematic diagram showing a carcass packaging material and cutting positions according to a first embodiment of the present invention. [Figure 4] FIG. 4 is a schematic diagram showing a carcass packaging material according to a second embodiment of the present invention and its cutting locations. [Diagram 5] FIG. 4 is a schematic diagram showing a carcass packaging material according to a third embodiment of the present invention. [Figure 6] FIG. 11 is a schematic diagram showing a carcass packaging material according to a fourth embodiment of the present invention. [Figure 7] FIG. 13 is a schematic diagram showing a carcass packaging material according to a fifth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] An embodiment of the carcass packaging material of the present invention will be described with reference to the drawings. A carcass packaging material of the first embodiment is shown in Figs. 1 to 3. The carcass packaging material 10 of this embodiment is provided in the form of a roll 22 as shown in Fig. 2, and the carcass packaging material 10 provided in the form of a roll is cut along the marking thread 14 at a carcass processing plant or in the preparation stage, so that one carcass 20 can be packaged. The carcass packaging material 10 provided in the form of a roll in Fig. 2 is made of a tubular knitted fabric 16. The carcass packaging material 10 provided in the form of a roll is knitted, for example, using a large circular knitting machine (not shown) equipped with a plurality of yarn cones on a yarn rack, and an opening 12 is formed at an arbitrary portion where the tubular knitted fabric 16 is cut all around. When used to cover the carcass 20, the carcass 20 is wrapped so as to cover it from the opening 12, and finally, as shown in Fig. 1, the carcass 20 is covered so as to cover the carcass 20 except for the bones of the front and rear legs and their vicinity.

[0016] In the cylindrical knitted fabric 16 of the carcass packaging material 10 of this embodiment, a marker yarn 14 that is distinguishable from the ground yarn is knitted at a predetermined interval in the length direction of the knitted fabric 16. As an example of a method for inserting the identifiable marker yarn 14 into the knitted fabric 16 at a predetermined interval in the length direction, in other words, as an example of a method for manufacturing the carcass packaging material, an operation of switching the yarn at a predetermined interval knitted by a circular knitting machine may be performed. That is, such a marker yarn 14 can be inserted into the knitted fabric 16 by previously attaching a predetermined yarn feed switching device (auto striper) to the circular knitting machine and performing an operation of switching a single or multiple feed yarns from white to, for example, red and returning them at a predetermined interval in the length direction of the cylindrical knitted fabric. At this time, if, for example, a white polyester fiber yarn is used as the ground yarn, the yarn to be switched for the marker yarn 14 can be the same polyester fiber yarn, for example, red. Basically, an operation of switching to a colored yarn for one round and returning to the original is performed, but it is also possible to switch to a colored yarn for two, three, or more rounds and then return to the original.

[0017] When the color yarn is switched by one revolution, as shown in FIG. 3, about one revolution of the marker yarn 14 is woven. In circular knitting, stitches are formed in a spiral shape by proceeding with weft knitting, and therefore, when one color yarn is used as the marker yarn 14, a step in the length direction is generated at both ends of the yarn according to the number of stitches of the number of yarns woven at the same time. In the roll 22 described above, the marker yarns 14 with such steps are arranged at a predetermined interval, for example, at intervals of 1.5 to 6.0 m in the length direction, and are handled in a wound form. For example, if the wound length of the roll is 100 meters and the marker yarns 14 are woven every 4.0 m, a total of 25 marker yarns will appear sequentially at a predetermined interval when unwound from the wound state. Before packaging the carcass, an operator pulls out the tubular knitted fabric 16 of the carcass packaging material 10 from the roll 22 and cuts it to a predetermined length. During this operation, the operator cuts the tubular knitted fabric 16 along the marking thread 14 with scissors or a cutter to obtain a cylinder having a length corresponding to one carcass 20, thereby protecting the surface of the carcass. When cutting along the marking thread 14 with scissors or a cutter, the operator may cut in the circumferential direction, which is the horizontal direction, and cross the spiral marking thread 14 once or an odd number of times. In this embodiment, the marking thread 14 is woven in, for example, every 4.0 m, but the predetermined interval may be another length or unit length. For example, in a configuration in which a marking thread is inserted every 1 meter, when cutting at 4.0 m, the marking thread 14 may be cut every fourth thread. In the case of 3.2m, the third piece is added 20cm, so you only need to measure 20cm from the third piece. There is no need to prepare a tape measure with a scale of 3 meters or more, or to measure 1 meter three times and then add 20cm.

[0018] In the first embodiment of the carcass packaging material, the marking thread 14 is selected from colored threads that are easily distinguishable by workers, but the marking thread 14 is not limited to being distinguished by humans, and can also be detected by a sensor, etc. As an alternative, the marking thread 14 can be a marker derived from a special wavelength or particle that cannot be detected by the human eye.

[0019] In the first embodiment of the carcass packaging material, the marker thread 14 is described as being the same type of thread as the ground thread but a different color, but it can also be a thread of a different fiber so that it can be identified by visual reflection or feel, and both the type and color of thread can be set to be different between the marker thread and the ground thread.

[0020] Next, a second embodiment of the carcass packaging material will be described with reference to Fig. 4. In the second embodiment of the carcass packaging material, a marker yarn 14 is woven into a tubular knitted fabric 16, and the marker yarn 14 can be pulled out of the knitted fabric 16. By pulling out the marker yarn 14 from the knitted fabric 16, the part where the marker yarn 14 was woven is unraveled, and the tubular knitted fabric 16 is separated in the length direction. Therefore, the pulling out operation of the marker yarn 14 generates a cut according to the place where the marker yarn 14 was woven, and only the step part caused by the spiral progression of the circular knitting is continuous between the upper and lower knitted fabrics 16, so the entire circumference of the tubular knitted fabric 16 can be separated by simply cutting this part. In other words, pulling out the marker yarn 14 is equivalent to the cutting operation of this part, and makes the cutting operation much easier than the conventional cutting operation.

[0021] Next, referring to FIG. 5, a carcass packaging material according to a third embodiment will be described. In the carcass packaging material according to the third embodiment, two mark threads 14a and 14b are used. As already described, the mark threads woven into the knitted fabric 16 may be a set of multiple threads, and by using two or more threads, it is easier for the worker to find the mark than a single thread, and the space between the two threads also functions as a margin when cutting with scissors, etc., which contributes to improving workability. The two parallel mark threads 14a and 14b can be realized by providing a yarn feed switcher at two locations on the circumference of a circular knitting machine, for example. Multiple threads means that multiple threads are woven into a portion identified by one mark thread, and the total number is the sum of the number of marks and the number of each thread. The packaging material according to the present disclosure is not necessarily limited to a multiple number of mark threads in a certain location of the knitted fabric, all of which are the same multiple number. The number of yarns making up the marker yarn can be varied within a roll, for example, to notify the operator near the end of the roll where there are five remaining knitted fabrics available.

[0022] Next, referring to FIG. 6, a carcass packaging material according to a fourth embodiment will be described. In the carcass packaging material according to the fourth embodiment, the mark yarn 14 also functions as a through yarn passing through the inside and outside of the knitted fabric 16. That is, using the colored mark yarn 14 for visual inspection, an operator cuts the tubular knitted fabric 16 one revolution with scissors or the like at the lower part near the mark yarn 14, and separates the knitted fabric 16 with the mark yarn 14 remaining at the bottom from the knitted fabric 16 located below it. After removing the knitted fabric 16 on the lower side, the mark yarn 14 is pulled, and since the mark yarn 14 serves as a through yarn passing through the inside and outside of the knitted fabric 16, the opening at the bottom of the knitted part 16 can be squeezed and closed like the opening of a drawstring bag, and the carcass packaging material can be made into a single bag body. Such pulling of the through yarn to create a bag body can be performed for each knitted fabric 16, and it can also be squeezed and closed even after cutting to a predetermined length. In addition, by making each of the multiple mark yarns a through yarn passing through the inside and outside of the knitted fabric 16, it is possible to form a drawstring-like narrowed portion at each of the upper and lower openings of the tubular knitted fabric 16. In addition, since the mark yarns can be narrowed to form a drawstring shape, there is an effect of greatly reducing cut portions and lint, which is a cause of foreign matter contamination.

[0023] FIG. 7 shows a fifth embodiment, in which a different knitting section 30 with a different knitting method is formed on the knitted fabric 16 instead of the mark yarn. The carcass packaging material of the fifth embodiment has a knitted fabric 16 made by circular knitting a ground yarn, and the different knitting section 30 with a different knitting method from the knitted fabric can be knitted at predetermined intervals in the length direction of the knitted fabric 16. Even if the knitted fabric structure is changed, the difference in gloss, feel, appearance, etc. of the changed part can function as a marker, and the length in the length direction can be relatively longer than when the supply of yarn is changed to form a belt-like shape. As an example of the knitting method, while forming the basic knitted fabric 16 by flat knitting, the knitting structure is temporarily changed to jacquard knitting, mesh knitting, pile knitting, etc. to form the different knitting section 30. By knitting the belt-like shape and then returning it to its original state, a carcass packaging material as shown in FIG. 7 is manufactured. The worker can cut the carcass packaging material to a suitable length using the different knitting section 30 as a marker. The color and diameter of the yarn can also be changed in this different knitting section 30. It may also be a configuration that combines a mark yarn and a different knitted section 30, and may have a pattern in which a combination is repeated such that, for example, after four turns of the mark yarn are arranged at a specified interval, a different knitted section 30 appears once.

[0024] In addition, in the carcass packaging material of the present invention, it is possible to change the diameter of the thread from that of the ground thread. Furthermore, it is also possible to switch between long fibers and short fibers between the ground thread and the mark thread. In addition, as an example of using threads of different fiber materials, there is a method of using water-soluble fiber threads such as polyvinyl alcohol fiber threads, and it is also possible to cut the tubular knitted fabric at a predetermined position by supplying water.

[0025] In the above embodiment of the packaging material for carcasses, the yarn used in the circular knitting machine has been described as polyester fiber yarn, but other examples of yarns may be used, such as yarns made of resins listed in the Positive List System of the revised Food Sanitation Act. Examples include polyethylene (PE), polypropylene (PP), polymethylpentene (PMP), polybutene-1 (PB-1), butadiene resin (BDR), ethylene-tetracyclododecene copolymer (ETD), ethylene-2-norbornene resin (ENB), polystyrene (PS), acrylonitrile-styrene resin (AS), acrylonitrile-butadiene-styrene resin (ABS), polyphenylene ether (PPE), polyacrylonitrile (PAN), fluororesin (FR), polymethacrylic styrene (MS), methacrylic resin (PMMA), Examples of such materials include nylon (PA), polyethylene terephthalate (PET), polycarbonate (PC), polyvinyl alcohol (PVA), polyacetal (POM), polybutylene terephthalate (PBT), polyarylsulfone (PASF), polyarylate (PAR), hydroxybenzoic acid polyester (HBP), polyetherimide (PEI), polycyclohexylene dimethylene terephthalate (PCT), polyethylene naphthalate (PEN), polyester carbonate (PPC), polylactic acid (PLA), and polybutylene succinate (PBS).

[0026] As described above, the carcass packaging material of the present invention has a structure in which a marker yarn is woven in to serve as a guide for the cutting location when cutting the carcass packaging material itself to a predetermined length, so that the worker can easily proceed with the cutting work at the predetermined cutting location. When the marker yarn is pulled out of the knitted fabric and the knitted fabric is cut at the position where the marker yarn was present, the cut location in the knitted fabric can be minimized, the efficiency of the cutting work can be improved, and at the same time, the adhesion of dust, lint, etc. to the surface of the carcass can be greatly suppressed. [Explanation of symbols]

[0027] 10. Carcass packaging materials 12 Opening 14 Marking thread 16 Knitted fabric 20 Carcass 22 rolls 30 Different Parts

Claims

1. This carcass packaging material for packaging carcasses is characterized in that it has a knitted fabric made by circularly knitting ground yarns, and that marker yarns that are distinguishable from the ground yarns are knitted at predetermined intervals in the longitudinal direction of the knitted fabric.

2. 2. The carcass packaging material according to claim 1, wherein the marking thread is a colored thread different in color from the base thread.

3. 2. The carcass packaging material according to claim 1, wherein the marking thread is made of a fiber different from that of the ground thread.

4. 2. The carcass packaging material according to claim 1, wherein the marking thread is pullable from the knitted fabric, and the knitted fabric is separated by pulling out the marking thread.

5. 2. The carcass packaging material according to claim 1, wherein the knitted fabric is wound in a roll.

6. 2. The carcass packaging material according to claim 1, wherein the marking thread has a length equivalent to one or more circumferences of the circular knitting.

7. 2. The carcass packaging material according to claim 1, wherein the marking thread is composed of one or more marks.

8. 2. The carcass packaging material according to claim 1, wherein the marking yarn also functions as a thread passing through the inside and outside of the knitted fabric.

9. This carcass packaging material for packaging carcasses is characterized in that it has a knitted fabric made by circularly knitting ground yarn, and yarns made of water-soluble fibers are woven into the knitted fabric at predetermined intervals in the longitudinal direction.

10. This carcass packaging material for packaging carcasses is characterized in that it has a knitted fabric made by circularly knitting ground yarn, and a knitting structure different from the knitting method of the knitted fabric is knitted at predetermined intervals in the longitudinal direction of the knitted fabric.

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