Hand-knitted basket and hand-knitted antibacterial basket

Abstract

To provide a hand-knitted basket which can be obtained using flexible filaments suitable for hand knitting, is easy to knit, is hard to lose its shape, is lightweight and durable, has resistance to water or moisture, and is machine-washable; and a hand-knitted antibacterial basket which can be obtained using antibacterial flexible filaments and is clean and safe to use because of its excellent antibacterial properties.SOLUTION: A hand-knitted basket comprises: a bottom face part; a circumferential wall part connected to the bottom face part; and an upper edge part connected to the circumferential wall part, and is made by hand knitting flexible filaments. The flexible filaments comprise polypropylene and polyethylene, and the maximum load of the flexible filaments is 4.9 to 11.0 N. A hand-knitted antibacterial basket comprises an antibacterial substance.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a hand - knitted basket and a hand - knitted antibacterial basket.

Background Art

[0002] In Patent Document 1, it is known to form a basket by knitting, with a knitting machine, a string (an aggregate of yarns) obtained by bundling yarns in which an antibacterial agent is kneaded into a polypropylene resin (see [Summary] and [Figs. 1 - 2]). Also, in Patent Document 2, fibers and yarns in which antibacterial components (zinc and phosphorus) are dispersed in a resin such as a polyethylene resin or a polypropylene resin are known (see Claim 1 and the abstract). Furthermore, a basket made by hand - knitting a flexible filament made of polypropylene resin is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, although the knitting method by machine is described, the hand - knitting method is not described, and furthermore, the characteristics of resin - made filaments suitable for hand - knitting are not described. Similarly, in Patent Document 2, the hand - knitting method and the characteristics of resin - made filaments suitable for hand - knitting are not described. Furthermore, although a hand - knitted basket made of resin - made yarn is known, the characteristics of resin - made filaments suitable for hand - knitting are not described.

[0005] In view of the descriptions in any of the above patent documents, the present invention provides a hand-knitted basket that is obtained using a flexible filament suitable for hand knitting, is easy to knit, does not easily lose its shape, is light and durable, is resistant to water and moisture, and can be machine-washed, and a hand-knitted antibacterial basket that is obtained using an antibacterial flexible filament and has excellent antibacterial properties, so that it is clean and can be used with confidence.

Means for Solving the Problems

[0006] The present invention is as follows. 1. In a hand-knitted basket comprising a bottom surface portion, a peripheral wall portion connected to the bottom surface portion, and an upper edge portion connected to the peripheral wall portion, and formed by hand-knitting a flexible filament, the flexible filament contains polypropylene and polyethylene, and the hand-knitted basket is characterized in that the maximum load of the flexible filament is 4.9 to 11.0 N. 2. The hand-knitted basket according to 1 above, wherein the load at 50 mm displacement of the flexible filament is 3.7 to 7.2 N. 3. When a test piece consisting of a knitting sheet with a length of 130 mm and a width of 130 mm is placed on a flat surface, and when 3 out of the 4 end portions of the test piece are in contact with the flat surface, the maximum height between the lower surface of the remaining 1 end portion of the test piece and the flat surface is 0 to 28 mm. The hand-knitted basket according to 1 or 2 above. 4. The hand-knitted basket according to 1 above, wherein the cross-sectional shape of the flexible filament is star-shaped. 5. In a hand-knitted antibacterial basket comprising a bottom surface portion, a peripheral wall portion connected to the bottom surface portion, and an upper edge portion connected to the peripheral wall portion, and formed by hand-knitting an antibacterial flexible filament, the flexible filament contains polypropylene, polyethylene, and an antibacterial substance, and the hand-knitted antibacterial basket is characterized in that the maximum load of the flexible filament is 4.9 to 11.0 N. 6. The hand-knitted antibacterial basket according to 5 above, wherein the load at 50 mm displacement of the flexible filament is 3.7 to 7.2 N. 7. When a test piece made of a knitted sheet with a length of 130 mm and a width of 130 mm is placed on a flat surface, when three of the four ends of the test piece are in contact with the flat surface, the maximum height between the lower surface of the remaining one end of the test piece and the flat surface is 0 to 28 mm. The hand-knitted antibacterial basket according to 5. or 6. above. 8. The hand-knitted antibacterial basket according to 5. above, wherein the cross-sectional shape of the flexible filament is star-shaped. 9. The hand-knitted antibacterial basket according to 5. above, wherein the antibacterial substance is a silver compound.

Advantages of the Invention

[0007] The hand-knitted basket of the present invention is obtained by using a flexible filament suitable for hand knitting, so it can be easily manufactured by hand knitting, has excellent shape retention that is not easily out of shape, is light and strong, and is resistant to water and moisture and can be machine-washed. The hand-knitted antibacterial basket of the present invention, like the above-mentioned hand-knitted basket, can be easily manufactured by hand knitting, has excellent shape retention that is not easily out of shape, is light and strong, is resistant to water and moisture and can be machine-washed, and is obtained by using an antibacterial flexible filament suitable for hand knitting, so it is also excellent in antibacterial properties and can be used cleanly and safely.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

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Figure 4

Figure 5

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Figure 8

Figure 9

Mode for Carrying Out the Invention

[0009] Hereinafter, the present invention will be described in detail. 1. Regarding the hand-knitted basket The hand-knitted basket of the present invention is composed of a bottom surface portion, a peripheral wall portion connected to the bottom surface portion, and an upper edge portion connected to the peripheral wall portion, and is formed by hand-knitting a flexible filamentous body. The flexible filamentous body contains polypropylene and polyethylene. The maximum load of the flexible filamentous body is 4.9 to 11.0 N.

[0010] The hand-knitted basket includes a bottom surface portion, a peripheral wall portion connected to the bottom surface portion, and an upper edge portion connected to the peripheral wall portion. These shapes, sizes, etc. are not particularly limited. The whole may be a rectangular box shape, or the bottom surface shape of the bottom surface portion is not limited to a rectangle, and may be an elliptical shape or a circular shape, etc. Further, a lid portion may be provided on the main body composed of these, or a hand-held portion may be provided to form a hand-held shape, etc. This lid portion can be attached to the upper edge portion so as to be rotatable. Also, feet may be provided at the bottom of this main body. The material of this foot is not particularly limited, but usually a metal member can also be used. In addition, this hand-knitted basket is formed by hand-knitting, and this hand-knitting method is not particularly limited, and known and well-known methods can be used. Usually, it is produced by hand-knitting as follows. For the hand-knitted basket, first, starting from the bottom surface and going upward, the materials are alternately crossed and knitted. When reaching the upper part, the materials can be folded back and the basket can be finished by sandwiching them in the gaps at the upper part.

[0011] The flexible filament includes polypropylene and polyethylene. The types of polypropylene and polyethylene and their blending ratios are not particularly limited as long as they can be hand-knitted. For example, the polypropylene can be of a normal hard type, and the polyethylene can be of a normal soft type, and the blending ratio is not particularly limited, but it is preferable that there is more polypropylene than polyethylene. Also, generally, when the total of both resins is 100 parts by mass, the polypropylene can be 60 to 90 parts by mass, preferably 60 to 80 parts by mass, and particularly preferably 60 to 70 parts by mass. In particular, this blending can be set to a blending ratio such that the maximum load of the flexible filament is about 4.9 to 11.0 N, the maximum load of the flexible filament is about 4.9 to 9 N, and the maximum load shown below. Since the basket uses a flexible filament containing polypropylene and polyethylene, it can be inexpensive, lightweight, strong, and resistant to water and moisture.

[0012] The cross-sectional shape of the flexible filament is not particularly limited, but those having a texture or longitudinal grooves on the surface are preferable. As an example, those having a cross-section with an irregular shape, particularly a star shape, are preferable. Refer to Figure 2. In the case of this star shape, since it has a shape in which longitudinal grooves are formed on its surface, it is not slippery, easy to knit, prevents the knitted basket from losing its shape, and has a more luxurious feel, so it is preferable. The number of triangular convex portions of this star, that is, the number of longitudinal grooves, can generally be 4 to 12, preferably 6 to 10, and more preferably about 6 to 8. The diameter of the flexible filament is not particularly limited, but is usually about 3 to 10 mm, preferably 4 to 8 mm, and preferably 4 to 6 mm.

[0013] In the hand-knitted basket of the present invention, the maximum load of the flexible filament is 4.9 to 11.0 N, among which, it can be 4.9 to 10.0 N, preferably 4.9 to 9.0 N, more preferably 4.9 to 8.0 N, further 4.9 to 7.0 N, or 4.9 to 6.0 N, and further, it can be 5.0 to 11.0 N, 5.0 to 7.3 N, 5.0 to 6.0 N, etc. In addition, the exemplary upper and lower limit values of the present invention can be applied by appropriately combining the values measured in the following examples. The method for measuring the maximum load of the flexible filament is as follows. Attach the test piece to a constant speed elongation tensile testing machine at a gripping interval of 100 mm and reduce the gripping interval at a speed of 100 mm / min. Measure the maximum load required for the test piece to bend. Also, in the present invention, the load at 50 mm displacement of the flexible filament can be 3.7 to 7.2 N. This load at 50 mm displacement can further be 3.7 to 7.0 N, 3.7 to 6.5 N, preferably 3.7 to 6.2 N, and particularly preferably 3.7 to 5.0 N. In addition, the exemplary upper and lower limit values of the present invention can be applied by appropriately combining the values measured in the following examples. The method for measuring this load at 50 mm displacement is as follows. Measure the load at 50 mm displacement in the constant speed elongation tensile testing machine (see Figure 9). Furthermore, when a test piece composed of a knitting sheet with a length of 130 mm and a width of 130 mm is placed on a flat surface, three of the four end portions (specifically, the four corners) of the test piece are in contact with the flat surface, and the maximum height between the lower surface of the remaining one end portion of the test piece and the flat surface can be 0 to 28 mm. Furthermore, this height can be 0 to 20 mm, preferably 0 to 15 mm, more preferably 0 to 10 mm, and further 0 to 5 mm. When the height is 0 mm, the lower surface of the remaining one end portion of the test piece is in contact with the flat surface, and when the height exceeds 0 mm, the lower surface of the remaining one end portion of the test piece is not in contact with the flat surface.

[0014] 2. Regarding the hand-knitted antibacterial basket The hand-knitted antibacterial basket of the present invention comprises a bottom surface portion, a peripheral wall portion connected to the bottom surface portion, and an upper edge portion connected to the peripheral wall portion. In the hand-knitted antibacterial basket formed by hand-knitting an antibacterial flexible filament, the flexible filament contains polypropylene, polyethylene, and an antibacterial substance, and is characterized in that the maximum load of the flexible filament is 4.9 to 11.0 N. All matters described in the hand-knitted basket, except that the flexible filament contains an antibacterial substance, are applicable to the hand-knitted antibacterial basket of the present invention. The type of the antibacterial substance is not particularly limited, and a silver compound and a copper material, a copper compound and a copper material, a zinc compound and a zinc material, and a mercury compound can be used. Among these, silver materials (including metallic silver, silver oxide, and other silver compounds, etc.) and copper materials (including metallic copper, copper oxide, and other copper compounds, etc.) that are safer for the human body are preferable. The content of the antibacterial substance can be 0.005 to 10 parts by mass, preferably 0.005 to 5 parts by mass, more preferably 0.005 to 1 part by mass, based on 100 parts by mass of the entire flexible filament.

Example

[0015] Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples, and the present invention can take various forms as long as the problems of the present invention can be solved.

[0016] (1) Evaluation of the suitability of hand-knitting by a human hand for the production of a hand-knitted basket When knitting a hand-knitted basket by hand, the suitability of hand-knitting, including the ease of hand-knitting and the softness to the human hand, etc., was examined. First, by changing the blending ratio of polypropylene and polyethylene (including a silver-based antibacterial agent), four types of flexible filaments (hereinafter simply referred to as "filaments") 1, 2, 3, and 4 suitable for hand-weaving were produced. The production of this filament was carried out at a hand-knitted basket factory in Linyi District, Shandong Province, China on August 9, 2023. The cross-sectional shape of the filament is star-shaped with 5 to 7 longitudinal grooves formed, and its diameter is about 4 to 6 mm. The evaluation by the craftsman of the suitability of each of the thread-like bodies 1 to 4 immediately after production was as follows. Thread-like body 1; Soft Thread-like body 2; Slightly soft Thread-like body 3; Slightly hard Thread-like body 4; Hard

[0017] (2) Maximum load and load at 50 mm displacement of the thread-like bodies 1 to 4 The results of the maximum load and load at 50 mm displacement of the thread-like bodies 1 to 4 are shown below. (a) Maximum load; Thread-like body 1: 4.7 N, Thread-like body 2: 5.4 N, Thread-like body 3: 9.1 N, Thread-like body 4: 12.4 N (b) Load at 50 mm displacement; Thread-like body 1: 3.6 N, Thread-like body 2: 3.8 N, Thread-like body 3: 6.2 N, Thread-like body 4: 8.2 N (c) Test method; The test piece was attached to a constant-speed elongation tensile testing machine at a gripping interval of 100 mm, and the gripping interval was reduced at a speed of 100 mm / min. The maximum load required for the test piece to bend and the load at 50 mm displacement were measured. This testing machine is shown in Figure 9.

[0018] Thereafter, using each of the above-mentioned thread-like bodies, 20 skilled craftsmen with over 10 years of experience in hand-knitting basket weaving were asked to knit a 13 cm square sample sheet with the numbers of the thread-like bodies 1 to 4, which differed in softness, hidden, and they were asked to select which numbered thread-like body was the most easily knitted and hand-friendly as a hand-knitted basket, and the evaluation was conducted. In addition, the creation of these sample sheets was also carried out on the same date and in the same factory as the creation of the above-mentioned flexible thread-like bodies. The evaluation results are as follows. Of the 20 people, 17 selected that filament 2 was the most suitable, and 3 selected that filament 1 was the most suitable. That is, as many as 17 craftsmen judged that the antibacterial material of filament 2 was neither too soft nor too hard, but had the right amount of resilience and was gentle on the hands when knitting the hand-knitted basket. However, 3 people selected that the softer filament 1 was the most preferable. From the above, filaments 1 and 2 are preferably used for hand knitting, and in particular, filament 2 is evaluated as the most preferable. Filament 3 is a bit hard, and filament 4 is hard, so it is evaluated that they are not very suitable for hand knitting.

[0019] (3) Evaluation of the shape stability of the knitted product of the knitted material sheet after knitting This evaluation of the shape stability was carried out one month after the production of the filaments. (a) Using each of the above filaments 1 to 4, 20 craftsmen were asked to produce 13 cm square knitted sheets (hereinafter referred to as "sheets") 1 to 4. For these sheets, not only the ease of knitting by hand but also which antibacterial PP material number was "a proper material with a beautiful shape as a hand-knitted basket" was selected by the craftsmen. As a result, after all 20 craftsmen knitted 13 cm square sheets, not only the ease of knitting by hand but also which antibacterial PP material number was "a proper material with a beautiful shape as a hand-knitted basket" was selected by the 20 craftsmen. The evaluation results based on the impressions of the craftsmen showed that sheet 2 produced using filament 2 by all 20 people had a beautiful shape and excellent shape stability. Therefore, it was found that the material of filament 2 had an appropriate softness excellent for hand knitting, and also had excellent beauty and shape stability of the produced sheet.

[0020] (b) Evaluation of ease of knitting and shape stability of the sheet The degree of bending of the produced sheet was measured to evaluate the shape stability of the sheet. The plan view photographs of the said sheets are shown in Figs. 3(a) and (b) (sheets 1 and 2) and Figs. 4(a) and (b) (sheets 3 and 4), and the slightly side view photographs are shown in Figs. 5(a) and (b) (sheets 1 and 2) and Figs. 6(a) and (b) (sheets 3 and 4). The evaluations for these are shown below. (1) Sheet 1: It is too soft to maintain its shape. It is soft and easy to knit, but a jig is required when knitting. It sags over time. Refer to Figs. 3(a) and 5(a). (2) Sheet 2: They are in proper tension with each other. It is easy to knit, and due to the appropriate hardness, the shape is stable. Refer to Figs. 3(b) and 5(b). (3) Sheet 3: It sags a little. It is a little harder than Sheet 4, so it is better, but it makes the hand a little painful. Refer to Figs. 4(a) and 6(a). (4) Sheet 4: It is hard and sags greatly. It is too hard and makes the hand painful when knitting. It sags over time. It becomes difficult to knit a lot. Refer to Figs. 4(b) and 6(b). From the above, it can be seen that Sheets 2 and 3 are easy to knit and also excellent in shape stability. In particular, Sheet 2 is extremely excellent in both ease of knitting and shape stability.

[0021] (c) Evaluation of the degree of sagging (bending) As shown in the slightly side view photographs of Figs. 5(a) and (b) (sheets 1 and 2) and Figs. 6(a) and (b) (sheets 3 and 4), and the test method of Fig. 7, when a test piece composed of a knitted sheet with a length of 130 mm and a width of 130 mm was placed on a flat surface, when three of the four ends of the said test piece were in contact with the flat surface, the maximum height between the lower surface of the remaining one end of the test piece and the flat surface was measured. The results were 30 mm for Sheet 1, 0 mm for Sheet 2, 18 mm for Sheet 3, and 50 mm for Sheet 4. From this result, the sagging (the said maximum height) is almost non-existent in Sheet 2 and is extremely excellent. Next is Sheet 3 with 18 mm and is excellent next. For Sheet 1, it is almost 0 mm immediately after production, but this increases with the passage of time and becomes 30 mm one month after production. In terms of sagging, it can be seen that Sheets 2 and 3 are stable as they are small at 0 - 18 mm.

[0022] (d) Evaluation of the degree of whitening of the resin at the large bent part at the end of the knitted sheet Comparison photos of the bent parts of the four types of sheets were taken (see Fig. 8). According to this photo, it can be seen that the degree of whitening at the bent part increases in the order of Sheet 1 to Sheet 4, and it can be seen that strain is successively generated in the resin against bending. For example, it can be seen that Sheet 1 is hardly whitened, Sheet 2 is slightly whitened, Sheet 3 has an acceptable degree of whitening, and Sheet 4 is considerably whitened. From the above, it can be seen that Sheets 2 and 3 do not have such a large strain at the bent part and are practically sufficiently excellent. In particular, it can be seen that Sheet 2 is very excellent practically.

[0023] From the above, it was found that the softness index of the filament 2 with a repulsive force (softness) of about 5.4 N is the optimum softness of the filament knitted by hand. Furthermore, it was found that the definition of the softness of a material with an appropriate elasticity that can maintain the shape as a hand-knitted basket and is most easily knitted by a skilled hand-knitting basket craftsman is that it is best if it is made of a softness with a maximum load (N) in the range of 4.9 N to 6.0 N. That is, it was found that the sheet that is most easily knitted by hand is made of a material with a repulsive force (softness) within 4.9 N to 6.0 N. From the above, it was found that the softness of the filament 2 can provide Sheet 2 with an appropriate hardness that is most easily knitted by a skilled hand-knitting basket craftsman and can maintain the shape as a hand-knitted basket.

Industrial Applicability

[0024] The present invention is widely used in the technical field of materials suitable for hand knitting and various hand-knitted products using such materials, and is used to activate the industries related thereto. Furthermore, when the hand-knitting material is an antibacterial material, it is widely used in related fields such as infants and children who require antibacterial properties.

Claims

1. In a hand-knitted basket comprising a bottom portion, a peripheral wall portion connected to the bottom portion, and an upper edge portion connected to the peripheral wall portion, and being formed by hand-knitting a flexible filamentary body, the flexible filamentary body contains polypropylene and polyethylene, the hand-knitted basket is characterized in that the maximum load of the flexible filamentary body is 4.9 to 11.0 N.

2. The hand-knitted basket according to claim 1, wherein the load of the flexible filamentary body at a displacement of 50 mm is 3.7 to 7.2 N.

3. When a test piece composed of a knitted sheet having a length of 130 mm and a width of 130 mm is placed on a flat surface, and when three of the four end portions of the test piece are in contact with the flat surface, the maximum height between the lower surface of the remaining one end portion of the test piece and the flat surface is 0 to 28 mm. The hand-knitted basket according to claim 1 or 2.

4. The hand-knitted basket according to claim 1, wherein the cross-sectional shape of the flexible filamentary body is star-shaped.

5. In a hand-knitted antibacterial basket comprising a bottom portion, a peripheral wall portion connected to the bottom portion, and an upper edge portion connected to the peripheral wall portion, and being formed by hand-knitting an antibacterial flexible filamentary body, the flexible filamentary body contains polypropylene, polyethylene, and an antibacterial substance, the hand-knitted antibacterial basket is characterized in that the maximum load of the flexible filamentary body is 4.9 to 11.0 N.

6. The hand-knitted antibacterial basket according to claim 5, wherein the load of the flexible filamentary body at a displacement of 50 mm is 3.7 to 7.2 N.

7. When a test piece composed of a knitted sheet having a length of 130 mm and a width of 130 mm is placed on a flat surface, and when three of the four end portions of the test piece are in contact with the flat surface, the maximum height between the lower surface of the remaining one end portion of the test piece and the flat surface is 0 to 28 mm. The hand-knitted antibacterial basket according to claim 5 or 6.

8. The hand-knitted antibacterial basket according to claim 5, wherein the cross-sectional shape of the flexible filamentary body is star-shaped.

9. The hand-knitted antibacterial basket according to claim 5, wherein the antibacterial substance is a silver compound.

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