JP2003103648A - Sliding net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sliding net which is excellent in lubricity and can transfer a baggage by sliding the net smoothly. SOLUTION: In the sliding net 10, warps 1 and wefts 2 made of a synthetic resin are fusion-bonded at intersections 3, and a lubricant is contained in the warps 1 and the wefts 2. Since a contact area with the transferred baggage is small, and the lubricity is improved by the lubricant, the baggage can be slid smoothly to be transferred. In order to further improve the lubricity by further decreasing the contact area, preferably, the warps 1 or the wefts 2 are displaced to the surface side, the intersections 3 are protruded to round their apex parts, and conductivity is given to prevent electrification.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding net which is preferably used for sliding and transferring articles.

[0002]

2. Description of the Related Art Conventionally, when a cardboard-stuffed baggage is to be slid and transported, a sliding pipe having good lubricity or a resin plate having a low coefficient of friction has been used as an underlaying material or a supporting material. .

[0003]

However, the sliding pipe having good lubricity has an advantage that the luggage can be smoothly slid and can be smoothly transported, but on the other hand, the work of mounting a large number of sliding pipes on the transportation equipment is troublesome. There was a problem of high cost.

On the other hand, a resin plate having a low coefficient of friction has better slipperiness than a general resin plate, but since the contact area with the transported goods is large, the slipperiness is not as good as that of the above-mentioned sliding pipe, and the luggage is not so good. However, there was a problem that the transferability was slightly inferior.

The present invention has been made to solve the above problems, and its purpose is to provide better slipperiness than a resin plate having a low coefficient of friction, and to lay a load as an underlay material in a transfer facility. It is to provide a useful sliding net that can be smoothly slid and transferred.

[0006]

In order to achieve the above object, in a sliding net according to claim 1 of the present invention, a warp and a weft of synthetic resin are fused at an intersection, and a lubricant is contained in the warp and the weft. It is characterized by being formed.

Since this sliding net is a net in which warp threads and weft threads made of synthetic resin are fused at the intersections, the contact area with the transported load is smaller than that of the resin plate, and moreover, it is contained in the warp threads and the weft threads. Since the lubricity is enhanced by the lubricant and has high self-lubricating property and low dynamic friction force, the load can be smoothly slid and transported. Further, since this sliding net only needs to be laid on a transfer facility such as a transfer stand, it does not have to be mounted on the transfer facility like a conventional sliding pipe, and the cost can be reduced.

Next, a sliding net according to a second aspect of the present invention is characterized in that, in the sliding net according to the first aspect, one of the warp yarn and the weft yarn is displaced more to the surface side than the other. And

In such a sliding net, since only the warp yarns or weft yarns which are deviated to the surface side are in line contact with the transported load,
The contact area is further reduced, and the lubricity is further improved. Therefore,
If the sliding net is laid so that the warp yarns or the weft yarns that are deviated to the surface side are parallel to the transport direction of the load, the load can be slid and transported more smoothly.

Next, a sliding net according to a third aspect of the present invention is the sliding net according to the first aspect, wherein an intersection of the warp yarn and the weft yarn is raised, and a top of the raised intersection is rounded. Characterize.

In such a sliding net, the contact area is smaller than that of the sliding net according to claim 2, and only the intersection of the warp yarn and the weft yarn is in point contact with the transported load. Since it is rounded, the lubricity is further improved. Therefore, when this sliding net is laid, the luggage can be slid and transported more smoothly.

Next, in the sliding net according to claim 4 of the present invention, in the sliding net according to any one of claims 1 to 3, the lubricant contained in the warp yarn and the weft yarn is a silicone lubricant. Characterize.

Among the lubricants, the silicone-based lubricants are particularly excellent in lubricity and have a good compatibility with the warp and weft synthetic resins.
The sliding net in which such a silicon-based lubricant is contained in the warp yarn and the weft yarn has excellent lubricity. Therefore, by laying this sliding net, the luggage can be slid and transported very smoothly.

Next, the sliding net according to claim 5 of the present invention is characterized in that, in the sliding net according to any one of claims 1 to 4, the warp and weft synthetic resin is polyethylene.

The sliding net, in which warp and weft of polyethylene are fused at the intersection, is lightweight and easy to carry because polyethylene itself is a resin that is lightweight and rich in lubricity, and is excellent in synergistic action with a lubricant. It can exhibit lubricity.

Next, a sliding net according to a sixth aspect of the present invention is characterized in that the sliding net according to any one of the first to fifth aspects has conductivity.

The sliding net having such conductivity is
It is possible to prevent static electricity by discharging static electricity generated by sliding friction of the transferred luggage.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a partial plan view of a sliding net according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view taken along line AA of FIG.

As shown in FIG. 1, this sliding net 10 is a net having a square mesh in which warp threads 1 and weft threads 2 made of synthetic resin are fused at each intersection point 3, and each intersection point 3 is on the surface side. It rises toward the back side, and the top of this intersection 3 is rounded. The warp yarn 1 and the weft yarn 2 of this net 10 contain a lubricant. It should be noted that the intersection 3 does not necessarily need to be raised toward both front and back sides, and may be at least raised toward the front side on which a load or the like is placed.

As the synthetic resin for the warp yarn 1 and the weft yarn 2, almost all general-purpose thermoplastic resins can be used except vinyl chloride resin which is inferior in lubricity, and among them, olefinic resin and polyester which are rich in lubricity. Resin is preferred, and polyethylene is particularly suitable because it is lightweight and has excellent lubricity.

As the lubricant, silicone-based or fluorine-based ones, polyethylene wax, layered crystal substances (eg graphite, molybdenum disulfide, etc.), soft metals (eg lead, tin, etc.) are preferably used. In particular, a silicone-based lubricant is excellent in lubricity and has a good compatibility with the synthetic resin of the warp yarn 1 and the weft yarn 2 and is therefore very suitably used. When such a lubricant is contained, the slidability of the warp yarn 1 and the weft yarn 2 is enhanced, and the sliding net 10 having high self-lubricating property and low dynamic friction force is obtained.

The content of the lubricant is preferably 5 to 20% by weight. If the content is less than this, the sliding net 10 is used.
It becomes difficult to sufficiently improve the slipperiness of the above, and even if it is contained in a larger amount, the effect of improving the slipperiness cannot be obtained.

Mutual spacing between warp threads 1 and weft threads 2 (pitch spacing)
Is suitably about 3 to 20 mm. And
Regarding the thickness of the yarn, when the mutual distance between the yarns is 3 mm, for example, the yield point strength of one yarn (temperature 20 ° C., pulling speed 200 mm / m
It is appropriate to set the thickness so that the yield point strength under the condition of in, hereinafter the same) is 10 N or more, and when the mutual spacing of the yarns is, for example, 7.5 mm, the yield point strength is 35 N or more. It is appropriate that the yarn has a thickness such that the yield strength is 70 N or more when the mutual spacing between the yarns is, for example, 10 mm. If the mutual spacing and thickness of the warp yarn 1 and the weft yarn 2 are set as described above, it has sufficient strength,
It is possible to obtain the sliding net 10 that does not easily break.

In the sliding net 10 described above, an extruder for net production is used to continuously extrude a thermoplastic molten resin containing a lubricant to form warp yarns 1, while the molten resin containing a lubricant is formed. It can be easily manufactured by a method of intermittently extruding so as to be orthogonal to the warp yarns 1 to form the weft yarns 2 and, at the same time, fusing the intersections with the warp yarns 1 together.

FIG. 3 is a perspective view showing an example of use of the sliding net 10, according to which a belt conveyor 20 is used.
The sliding net 10 is slid on the surface of a transfer table 22 (sliding table) having an inclination for sliding and transferring the cargo 21 sent by
Is laid and attached with an adhesive or the like.

When the sliding net 10 is laid on the transfer table 22 in this way, in addition to the lubricity of the sliding net 10 being enhanced by the lubricant contained in the warp yarn 1 and the weft yarn 2 of the sliding net 10, Only the raised intersection points 3 of the weft thread 2 make point contact with the bottom surface of the transport baggage 21, so that the contact area is extremely reduced and the top of the raised intersection points 3 is rounded, so that the sliding performance is significantly improved. Therefore, the load 21 can be smoothly slid under its own weight and transferred. Further, since the sliding net 10 only needs to be laid on the transfer table 22 or the like, it is not necessary to mount the sliding net 10 on the transfer table or the like unlike a conventional sliding pipe, and the cost can be reduced.

Since the sliding net 10 of the present invention has excellent sliding performance as described above, it is used for the above-described transfer table 22 (slide table) and other transfer equipment, and also as an underlay material for sliding such as electric wiring. It is used for various purposes such as underlay materials for sliding racks and shelves, chute members and guide members for machines and devices, and annoying paper-strength preventive materials.

FIG. 4 is an enlarged partial sectional view of a sliding net according to another embodiment of the present invention.

This sliding net 11 is a net having a square mesh in which warp threads 1 and weft threads 2 made of a synthetic resin containing a lubricant are fused at their intersections 3, and the warp threads 1 have a surface more than the weft threads 2. It deviates to the side (upper side in FIG. 4).

In such a sliding net 11, since only the warp yarns 1 which are deviated to the surface side are in line contact with the transported load, the contact area is reduced and the lubricity is further improved. Therefore, if the sliding net 11 is laid so that the warp yarns 1 which are deviated to the surface side are parallel to the transfer direction of the load, the load can be smoothly slid and transferred.

In the embodiment shown in FIG. 4, the warp yarn 1 is offset, but the weft yarn 2 may be offset from the warp yarn 1 to the front side. The sliding net 11 may be laid so as to be parallel to each other.

In the sliding nets 10 and 11 described above,
Conductivity is preferably imparted to the sliding nets 10 and 11 by containing a conductive material in the warp threads 1 and the weft threads 2 or using a conductive resin as a synthetic resin of the warp threads 1 and the weft threads 2. When the conductivity is imparted in this way, there is an advantage that static electricity generated by sliding friction of the transfer luggage 21 can be released to prevent charging.

As the conductive material, conductive carbon powder or filler is preferably used, and the content thereof is preferably about 5 to 40% by weight. Further, as the conductive resin, conductive polyolefin or the like is preferably used.

Next, a slip test conducted on the slip net of the present invention will be described.

[Slip test] Using an extruder for producing a net, molten polyethylene containing a silicon lubricant is continuously extruded to form warp yarns, while the above molten polyethylene is intermittently crossed with the warp yarns. To form a weft yarn and at the same time to fuse the intersection with the warp yarn, the sliding net (a) having a mutual spacing of the warp yarn and the weft yarn of 3 mm
Was produced. Then, by the same method, a sliding net (b) in which the mutual spacing between the warp yarn and the weft yarn was 7.5 mm, and a sliding net (c) in which the mutual spacing between the warp yarn and the weft yarn was 10 mm was further produced.

A cardboard box having a weight of 5 kg was placed on these sliding nets (a), (b) and (c), and 100 mm /
The dynamic frictional force when pulled at a pulling speed of min was measured. As a result, the sliding net (a) has a dynamic friction force of 350 g.
f, the dynamic frictional force of the sliding net (b) was 416 gf, and the dynamic frictional force of the sliding net (b) was 383 gf, showing that the dynamic frictional force was extremely small.

For comparison, the above cardboard box was placed on a plate of ultra-high molecular weight polyethylene having a small friction coefficient,
The dynamic friction force was measured under the same conditions. As a result, the dynamic friction force of the ultra high molecular weight polyethylene plate was 516 gf, and the dynamic friction force was 100 to 100 as compared with the sliding nets (a), (b) and (c) of the present invention.
It was as large as 166 gf.

From this test result, it was proved that the sliding net of the present invention has excellent sliding performance.

[0040]

As is clear from the above description and test results, the sliding net of the present invention has a sliding performance superior to that of a resin plate such as ultra-high molecular polyethylene having a low friction coefficient,
There is an effect that the luggage can be smoothly slid and transferred simply by laying it on the transfer facility, etc., and can be easily attached to the transfer facility and the cost can be reduced.

Particularly, a sliding net in which one of the warp yarns and the weft yarns is displaced more to the surface side than the other, and a sliding net in which the intersections of the warp yarns and the weft yarns are raised and the tops thereof are rounded are in contact with luggage. Since the area is extremely small, the sliding performance is high, and the conductive sliding net also has the effect of preventing charging.

[Brief description of drawings]

FIG. 1 is a partial plan view of a sliding net according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is a perspective view showing an example of use of the sliding net.

FIG. 4 is an enlarged partial sectional view of a sliding net according to another embodiment of the present invention.

[Explanation of symbols]

1 warp 2 weft 3 intersections 10,11 slip net 21 luggage 22 Transfer table with slant (slide)

Claims (6)

[Claims] 1. A warp and a weft of synthetic resin are fused at intersections,
A sliding net in which a lubricant is contained in warp threads and weft threads. 2. The sliding net according to claim 1, wherein one of the warp yarn and the weft yarn is displaced more toward the surface side than the other. 3. The sliding net according to claim 1, wherein an intersection of the warp yarn and the weft yarn is raised, and the top of the raised intersection is rounded. 4. The sliding net according to claim 1, wherein the lubricant contained in the warp yarn and the weft yarn is a silicone lubricant. 5. The sliding net according to claim 1, wherein the synthetic resin of the warp yarn and the weft yarn is polyethylene. 6. The sliding net according to claim 1, which has conductivity.