Bait

Abstract

The purpose of the present invention is to promote the progress of biological decomposition in a decomposition environment and to maintain stable performance during continuous use. Provided is a bait having a bait main body (10) formed from a marine organism-degradable resin raw material, the bait being provided with a plurality of protruding strip parts (21) provided on a surface (10d) of the bait main body (10) and recessed strip parts (22) formed between the protruding strip parts (21); the end of the ridge portion (21) is formed by a curved surface or a flat surface in which the top surface and the side surface are connected at an obtuse angle.

Description

Technical Field

[0001] The present invention relates to a bait. Background Art

[0002] Conventionally, a bait having a plurality of convex portions provided on the surface of a bait body for the purpose of improving the biting of fish or the like has been known (for example, see Patent Document 1).

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent No. 4450697 Summary of the Invention

[0006] Technical Problem to be Solved by the Invention

[0007] However, in the conventional bait, there are the following problems.

[0008] That is, in recent years, a bait formed of a raw material of a marine biodegradable resin has been required. When forming a convex portion on such a raw material of a marine biodegradable resin, if an edge portion is present on the outermost surface of the convex portion, there is a problem that the water resistance occurs and the casting distance deteriorates excessively. In addition, there are also problems such as the shape changing at the edge portion due to repeated use and the quality becoming unstable, or foreign matters such as garbage easily adhering to the edge portion. Therefore, there is room for improvement in this regard.

[0009] The present invention has been made in consideration of such a situation, and an object thereof is to provide a bait that can promote biodegradation in a decomposition environment. Another object of the present invention is to provide a bait having marine biodegradability that maintains stable performance during continuous use.

[0010] Means for Solving the Technical Problem

[0011] (1) Regarding Technical Solution 1 of the bait of the present invention, it is a bait having a bait body formed of a raw material of a marine biodegradable resin, characterized by comprising: a plurality of convex portions provided on the surface of the bait body; and concave portions formed between the convex portions; the ends of the convex portions are formed by a curved surface or a plane in which the top surface and the side surface are connected at an obtuse angle.

[0012] According to Technical Solution 1 of the bait of the present invention, by means of the uneven portions of the convex portions and the concave portions, it is easy to form a biofilm of microorganisms on the surface of the bait body, and biodegradation is promoted. Therefore, even when the bait remains in the sea against the intention of the angler such as snagging, it is possible to reduce the environmental load caused by the biodegradation of the bait.

[0013] In addition, in this technical solution, since the end of the convex part is formed by a curved surface or planes connected at an obtuse angle, even if the end decomposes, the overall shape of the convex part does not change significantly, and the fluid resistance does not change significantly.

[0014] In addition, in this technical solution, compared with the case where an edge with an acute angle is formed at the end, it is more difficult for foreign matters such as garbage in water to adhere.

[0015] (2) In the bait of Technical Solution 1 of the present invention, preferably, a fabric made of marine biodegradable fibers is pasted on the surface of the bait body; the convex part and the concave part are formed by the fiber-shaped parts on the surface of the fabric made of marine biodegradable fibers.

[0016] In this case, it is no longer necessary to process the concavities and convexities on the surface of the mold of the bait body, and it is no longer necessary to consider the demolding property during molding.

[0017] (3) In the bait of Technical Solution 2 of the present invention, it may also be characterized in that the fabric made of marine biodegradable fibers is a non-woven fabric.

[0018] In this case, the non-woven fabric can make the moisture retention time longer, which is beneficial to the formation of the biological film. In particular, in an environment where the bait is washed up on the revetment or when it tumbles when there are waves, the biological film can be formed for a long time.

[0019] (4) In the bait of Technical Solution 2 or Technical Solution 3 of the present invention, preferably, the fabric made of marine biodegradable fibers can be replaced on the surface of the bait body.

[0020] In this case, by replacing the fabric made of marine biodegradable fibers, the shape and weight of the bait do not change significantly, and the bait can be continuously used for a long time with stable performance.

[0021] (5) In the bait of Technical Solution 1 of the present invention, it may also be characterized in that the concavities and convexities formed by the convex part and the concave part are provided in a state of holding a delaying material that delays biodegradation.

[0022] In this case, when the bait remains in the ocean for a long time, water-soluble materials with a low environmental load such as vegetable oil and animal and plant waxes, or materials such as cellulose acetate with an acetyl substitution degree of 2.5 or more and 3.0 or less that decompose relatively slowly, which are held in the concavities and convexities of the bait body, dissolve in water or are first decomposed, and then the biodegradation of the bait body proceeds. In addition, when the bait is repeatedly used, by coating or impregnating the delaying material in the material, the bait can be continuously used for a long time.

[0023] In addition, in this technical solution, by having a concavo-convex structure, it is also possible to control a delay material corresponding to the height of the concavo-convex structure.

[0024] Furthermore, in this technical solution, since the end of the convex portion is formed in a shape of a curved surface or a plane connected at an obtuse angle, it is easy to hold the delay material in the concavo-convex portion.

[0025] (6) In the bait of Technical Solution 6 of the present invention, a hollow portion may also be provided inside the bait of Technical Solution 1.

[0026] In this case, if the outer contour portion of the bait body biodegrades and seawater seeps into the interior, the biodegradation progresses from both the inside and the outside, and the decomposition time is shortened.

[0027] Advantages of the Invention

[0028] According to the bait of the present invention, biodegradation can be promoted in a decomposition environment. In addition, in the present invention, stable performance can be maintained during the period of continuous use. Description of the Drawings

[0029] Figure 1 is a side view of the bait according to the first embodiment of the present invention.

[0030] Figure 2 is a cross-sectional view showing a part of the surface of the bait body.

[0031] Figure 3 is a cross-sectional view showing a part of the surface of the bait body according to the first modification.

[0032] Figure 4 is a cross-sectional view showing a part of the surface of the bait body according to the second modification.

[0033] Figure 5 is the bait according to the second embodiment, and is a cross-sectional view showing a state in the middle of pasting a fabric made of marine biodegradable fibers to the surface of the bait body. Detailed Description of the Invention

[0034] Hereinafter, embodiments of the bait according to the present invention will be described with reference to the drawings. In addition, in each figure, there are cases where the scale of each component is appropriately changed as needed so that each component can be recognized.

[0035] Figure 1 is a side view of the bait 1 according to the first embodiment.

[0036] As Figure 1 shown, the bait 1 according to the first embodiment is an example of a bait in the form of a shrimp imitation made of a biodegradable resin raw material and used for fishing cuttlefish, that is, a so-called fishing bait.

[0037] Here, in the lure 1, the direction in which the head and the tail are connected in a straight line is defined as the front-rear direction X1. The head side is defined as the front and the front side, and the tail side is defined as the rear and the rear side. In addition, when viewed from above, the lateral direction orthogonal to the front-rear direction X1 is defined as the left-right direction X2, and the following description will be given.

[0038] The lure 1 has a lure body 10 that joins a pair of left and right bait bodies 10A and 10B that are divided into two (refer to Figure 5 ). The lure body 10 is formed in a streamlined shape imitating a fish, and the peripheral portions of the pair of half bait bodies 10A and 10B are joined to each other by bonding or fusing to form integrally. The lure body 10 is integrally provided with a head 11, a trunk 12, and a tail 13. In addition, the head 11, the trunk 12, and the tail 13 may be separately divided, and each part may be provided so as to be swingable in the left-right direction X2. In Figure 1 , the left end of the paper surface is the front end portion 10a on the head 11 side of the lure body 10, and the right end of the paper surface is the rear end portion 10b on the tail 13 side of the lure body 10.

[0039] The lure body 10 has a shape with the largest cross-section at the central portion in the front-rear direction X1. That is, the lure body 10 is formed in an overall smooth curve with a shape that gets thicker from the front end portion 10a toward the central portion and becomes tapered as it goes from the central portion toward the rear end portion 10b.

[0040] The trunk 12 of the lure body 10 forms a hollow portion, for example. The head 11 and the tail 13 are solid. The lure body 10 is formed from a raw material of a marine biodegradable resin.

[0041] Here, as the marine biodegradable resin, it is composed of biomass plastics, and for example, cellulose acetate, PHA (polyhydroxyalkanoate) can be used. In particular, among PHAs, P3HB (poly[(R)-3-hydroxybutyrate ethyl ester]), P3HB4HB (poly[(R)-3-hydroxybutyrate ethyl ester-co-4-hydroxybutyrate ethyl ester]) as its copolymer, P3HBV (poly[(R)-3-hydroxybutyrate ethyl ester-co-(R)-3-hydroxyvalerate ethyl ester]), P3HBH (poly[(R)-3-hydroxybutyrate ethyl ester-co-(R)-3-hydroxyhexanoate ethyl ester]) and the like are materials with excellent biodegradability (marine biodegradability) in seawater.

[0042] At the front end portion 10a of the lure body 10, an annular line eye 61 for installing a fishing line is provided. At the rear end portion 10b of the lure body 10 and the lower surface 10c of the trunk 12, hook eyes 62 and 63 for connecting a fishing needle (hook) 31 are respectively provided.

[0043] On the surface 10d of the bait body 10, a plurality of rib portions 21 (protrusions) and groove portions 22 (recesses) formed between the rib portions 21 are provided. The rib portions 21 and the groove portions 22 extend alternately and in large numbers in a direction orthogonal to the front-rear direction X1 on the surface 10d of the bait body 10. The protruding height of the rib portion 21 (the height from the protruding end of the rib portion 21 to the bottom surface of the groove portion 22) is preferably about 0.01 to 1.2 mm, for example. These uneven shapes can be formed by injection molding of the above-mentioned marine biodegradable resin.

[0044] As Figure 2 shown, the entire convex portion of the rib portion 21 is formed by a curved surface 21a in a cross-section. In Figure 2 , the groove portion 22 is a flat surface 22a that connects the base ends of the curved surfaces 21a of the adjacent rib portions 21 to each other. In addition, only the protruding end portion of the rib portion 21 may be a curved surface.

[0045] In addition, the shape of the rib portion 21 is not limited to being Figure 2 the curved surface shape shown. For example, as in Figure 3 the first modification example shown, the rib portion 21A is a shape formed by a flat surface where the top surface 21b and the side surface 21c are connected at an obtuse angle in a cross-section.

[0046] In addition, as in Figure 4 the second modification example shown, the entire convex portion of the rib portion 21B is formed by a curved surface 21a in a cross-section, and the groove portion 22A is formed by a curved surface 22b in a cross-section. In addition, in Figure 4 , the radius of curvature of the curved surface 22b of the groove portion 22A is set to be larger than the radius of curvature of the curved surface 21a of the rib portion 21B.

[0047] In addition, when the groove portion 22 is a curved surface 22b or an obtuse flat surface as in the second modification example, there is an advantage that it is easy to wash away the microorganisms attached to the groove portion 22. On the other hand, by making the recess an acute angle, there is also an advantage that it is easy to retain the microorganisms.

[0048] In addition, the uneven portions formed by the rib portions 21 and the groove portions 22 may be provided in a state of holding a delaying material that delays biodegradation. By appropriately setting the intervals, sizes, and height differences of these unevennesses, the holding amount of the delaying material can be appropriately adjusted, and the period during which the bait can be used can be adjusted.

[0049] Figure 5The decoy 1A of the second embodiment has a structure in which a marine biodegradable fiber fabric 20 having a rib portion 21 and a groove portion 22 is adhered to the surface 10d of the decoy main body 10. That is, the rib portion 21 and the groove portion 22 are formed by the fiber-shaped portions on the surface 20a of the marine biodegradable fiber fabric 20. As the marine biodegradable fiber fabric 20, for example, a non-woven fabric made of cellulose is used. Figure 5 It shows a state in the process of adhering the marine biodegradable fiber fabric 20 to the surface 10d of the decoy main body 10 in the decoy 1A. Figure 5 The double-dot chain line indicates the state of being mounted on the surface 10d of the decoy main body 10 in the marine biodegradable fiber fabric 20.

[0050] Such a marine biodegradable fiber fabric 20 is adhered to the surface 10d of the decoy main body 10 with an adhesive material containing starch and can be replaced.

[0051] Next, the operation of the decoys 1 and 1A configured as described above will be described in detail with reference to the drawings.

[0052] The decoy 1 of the present embodiment has a decoy main body 10 formed of a raw material of a marine biodegradable resin. The decoy 1 includes a plurality of rib portions 21 provided on the surface 10d of the decoy main body 10 and groove portions 22 formed between the rib portions 21. The end of the rib portion 21 is formed by a curved surface 21a or a plane in which a top surface 21b and a side surface 21c are connected at an obtuse angle.

[0053] According to the decoy 1 of the present embodiment, it is easy to form a biofilm of microorganisms on the surface 10d of the decoy main body 10 by the uneven portions of the rib portion 21 and the groove portion 22, and the biodegradation is promoted. Therefore, even when the decoy 1 remains in the sea against the intention of the angler such as snagging, the load on the environment caused by the biodegradation of the decoy 1 can be reduced.

[0054] In addition, in the decoy 1 of the present embodiment, since the end of the rib portion 21 is formed by a curved surface 21a or a plane connected at an obtuse angle, even if the end decomposes, the overall shape of the rib portion 21 does not change greatly, and the fluid resistance does not change greatly.

[0055] In addition, in the decoys 1 and 1A of each embodiment, foreign matters such as garbage in the water are more difficult to adhere than in the case where an acute edge is formed at the end of the convex portion.

[0056] In addition, in the decoy 1A of the second embodiment, a marine biodegradable fiber fabric 20 is adhered to the surface 10d of the decoy main body 10. The rib portion 21 and the groove portion 22 are formed by the fiber-shaped portions on the surface 20a of the marine biodegradable fiber fabric 20.

[0057] Therefore, it is no longer necessary to process unevenness on the mold surface of the bait body 10, and it is no longer necessary to consider the mold release property during molding.

[0058] Furthermore, in the second embodiment, when the marine biodegradable fiber fabric 20 is a non-woven fabric, the non-woven fabric can extend the moisture retention time, which is advantageous for the formation of the biological film. In particular, in an environment where the bait 1 is washed up on the revetment or in an environment where it tumbles when there are waves, the biological film can be formed for a long time.

[0059] In addition, in the second embodiment, the marine biodegradable fiber fabric 20 can be replaced on the surface 10d of the bait body 10.

[0060] Thus, by replacing the marine biodegradable fiber fabric 20, the shape and weight of the bait 1 do not change significantly, and the bait 1A can be continuously used for a long time with stable performance.

[0061] In addition, in the baits 1 and 1A of each embodiment, the uneven portions formed by the convex strip portions 21 and the concave strip portions 22 are provided in a state of holding a delaying material that delays biodegradation.

[0062] Thus, when the baits 1 and 1A remain in the ocean for a long time, a delaying material such as a water-soluble material with a low environmental load such as vegetable oil or animal and plant wax, or a marine biodegradable material whose marine biodegradation rate is slower than that of the bait body, which is held in the uneven portions of the bait body 10 or the marine biodegradable fiber fabric 20 (for example, a material such as cellulose acetate with an acetyl substitution degree of 2.5 or more and 3.0 or less in which biodegradation progresses relatively slowly) dissolves in water or undergoes biodegradation, and the biodegradation of the bait body 10 progresses. In addition, when the baits 1 and 1A are repeatedly used, by coating or impregnating the delaying material in the material, the bait 1 can be continuously used for a long time.

[0063] In addition, in each embodiment, by having the uneven structure, it is also possible to control the delaying material corresponding to the height of the uneven structure (the thickness and density of the fibers in the second embodiment).

[0064] Furthermore, in the first embodiment, since the end of the convex strip portion 21 is formed in a shape of a curved surface 21a or a plane connected at an obtuse angle, it is easy to hold the delaying material in the uneven portion.

[0065] In the baits 1 and 1A of each embodiment configured as described above, the progress of biodegradation can be promoted in a decomposition environment.

[0066] In addition, in each embodiment, stable performance can be maintained during continuous use.

[0067] The above has described the embodiments of the bait of the present invention. However, these embodiments are presented as examples and are not intended to limit the scope of the invention. Each embodiment can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. In the embodiments and their variations, there are included, for example, those that can be easily conceived by those skilled in the art, those that are substantially the same, and those within an equivalent range, etc.

[0068] For example, in the above-described second embodiment, a structure is formed in which the marine biodegradable fiber fabric 20 is pasted on the surface 10d of the bait body 10, and the convex strip portion 21 and the concave strip portion 22 are formed by the fiber-shaped portions on the surface 20a of the marine biodegradable fiber fabric 20. However, the structure of forming the convex strip portion 21 and the concave strip portion 22 by pasting such a marine biodegradable fiber fabric 20 is not limited. In addition, the structure of being able to replace the marine biodegradable fiber fabric 20 with respect to the surface 10d of the bait body 10 is not limited as in the second embodiment. Further, in the above-described second embodiment, the marine biodegradable fiber fabric is a non-woven fabric, but it may also be a knitted fabric or a woven fabric.

[0069] In addition, the shapes and sizes of the convex portions and concave portions formed on the surface 10d of the bait body 10 are not limited to the respective embodiments. In addition, the shapes and sizes of the convex portions and concave portions formed on the surface 10d of the bait body 10 are not limited to the respective embodiments. That is, it is not limited to being convex strips and concave strips as in the first embodiment. For example, the extending direction of the convex strips and concave strips is not orthogonal to the front-rear direction X1, and they may be obliquely crossed or arranged in a direction parallel to the front-rear direction X1, or may be formed in a grid shape.

[0070] Further, for example, there may also be convex portions that partially protrude at a portion where the wall thickness is thin with respect to the internal hollow portion (hollow part). In short, as long as the end of the convex portion has a shape formed by a curved surface or a plane where the top surface and the side surface are connected at an obtuse angle.

[0071] Furthermore, the structures such as the shape and the number of divisions of the bait, and the shape, number, and mounting position of the needles mounted on the bait can be appropriately changed.

[0072] In addition, various biomass plastics are exemplified as the marine biodegradable resin, but the material generation itself may not be derived from organisms. For example, PBSA, PCL, PA4, or materials obtained by adding additives that impart marine biodegradability to biodegradable materials can be considered.

[0073] Description of Reference Numerals

[0074] 1, 1A Bait

[0075] 10 Bait Body

[0076] 10A and 10B bait bodies

[0077] Front end part of 10a

[0078] Rear end part of 10b

[0079] Surface of 10d

[0080] 11 Head part

[0081] 12 Trunk part

[0082] 13 Tail part

[0083] 20 Marine biodegradable fiber fabric

[0084] Surface of 20a

[0085] 21, 21A, 21B Ribbed parts (protrusions)

[0086] Curved surface of 21a

[0087] Top surface of 21b

[0088] Side surface of 21c

[0089] 22, 22A Grooved parts (recesses)

[0090] Flat surface of 22a

[0091] Curved surface of 22b

[0092] X1 Front - rear direction

[0093] X2 Left - right direction

Claims

1. A bait having a bait body formed from a raw material of a marine biodegradable resin, characterized in that: It comprises: A plurality of convex portions provided on the surface of the aforementioned bait body; and Concave portions formed between the aforementioned convex portions; The ends of the aforementioned convex portions are formed by curved surfaces or by planes where the top surface and the side surface are connected at an obtuse angle.

2. The bait according to claim 1, characterized in that: A marine biodegradable fiber fabric is adhered to the surface of the aforementioned bait body; The aforementioned convex portions and the aforementioned concave portions are formed by fiber-shaped portions on the surface of the aforementioned marine biodegradable fiber fabric.

3. The bait according to claim 2, characterized in that: The aforementioned marine biodegradable fiber fabric is a non-woven fabric.

4. The bait according to claim 2 or 3, characterized in that: The aforementioned marine biodegradable fiber fabric can be replaced on the surface of the aforementioned bait body.

5. The bait according to claim 1, characterized in that: The uneven portions formed by the aforementioned convex portions and the aforementioned concave portions are provided in a state of holding a delaying material that delays biodegradation.

6. The bait according to claim 1, characterized in that: The aforementioned bait body has a hollow portion inside.

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