JPS6028699Y2 - Cloth for dust removal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cloth for removing dust, and more particularly to a cloth particularly suitable for removing dust from records.

Usually, a soft cloth with fluff on the surface is used for dust removal, but in order to completely remove dust, it is necessary to rub the dust removal cloth strongly against the object to be treated.

In this case, if the material of the object to be processed is highly electrically insulating, such as synthetic resin, static electricity will be generated on the object at the same time as dust removal, and dust will tend to accumulate due to the attraction of the charge. There is.

Furthermore, since dust removal using cloth and dust accumulation due to static electricity generation are competitive, it is extremely difficult to completely remove dust.

However, for items such as records where dust removal has a large effect on sound quality, complete dust removal is strongly desired, but since the material is synthetic resin, it is only necessary to rub the dust removal cloth As the static electricity becomes stronger, the generation of static electricity becomes more noticeable, and a complete dust removal effect cannot be expected.

Of course, there are well-known methods to suppress the generation of static electricity, such as kneading an antistatic agent into resin or applying antistatic treatment to dust removal cloth, but even these methods are not completely effective. It was found that the dust removal effect could not be obtained.

The reason for this is that there is a limit to the antistatic effect itself, and at the same time, both the object to be treated and the dust removal cloth are charged with the same polarity, and as a result, the charge remains without being dissipated. It is thought that dust and dirt are deposited on the surface at the same time.

In other words, in order to prevent the accumulation of dirt and dust caused by the above-mentioned electric charge, as long as opposing electric charges are generated between the object to be treated and the fabric, a neutralizing discharge occurs in an electrochemical sense, and therefore, The hypothesis that since there is no residual charge, no accumulation of dirt or dust can occur should also be accepted.

The inventors of the present invention have conducted various studies on dust removal fabrics from the above-mentioned viewpoints, and have found that fabrics coated with conductive fibers, in which metals and conductive substances are coated on the fiber surfaces, exhibit excellent dust removal effects. was investigated.

Thus, according to the present invention, there is provided a dust-removing fabric in which conductive fibers are arranged at regular intervals in the warp direction of a velvet-like warp knitted material, in which the filament loops are cut and the free ends are exposed on the surface. It will be done.

Hereinafter, one example of the present invention will be explained with reference to the accompanying drawings.
The figure is an example of a composition diagram of a warp knitted fabric (interlaced knitted fabric) to which the present invention is applied.
FIG. 1C shows the structures each knitted by the yarns fed from the back reed (hereinafter, in the present invention, the front, middle, and back refer to the layers formed by the yarns fed from the respective reeds).

(Both are full sets) In Figure 1 A, a is a synthetic fiber monofilament, b is a conductive fiber, and a and b are each arranged in one body and knitted with a row 1.1-0 chain stitch. ing.

On the other hand, in the opening of Figure 1, C is a synthetic fiber multifilament yarn that constitutes the middle, and the yarn is woven with a 1-0.4-5 weave, which is a satin weave (that is, a horizontally waving state). ing.

Furthermore, in FIG. 1, d is a multifilament yarn of a threat fiber similar to C, and in the figure, it is woven with a 1-0.1-2 texture.

In the warp-knitted fabric obtained in this way, chain-knit braids are formed on the surface at regular intervals, the back has a normal warp-knit structure, and the middle yarn C, which is laterally swung, is knitted in a sandwich-like manner. It is rare.

Since a certain degree of hardness and shape retention are required for the dust removal surface, a surface structure using a warp knitted structure, particularly a chain stitch (braid) is a preferable embodiment.

However, in terms of surface structure, in addition to hardness, the overall surface
Flexibility is also required, and in this respect, a part of the multifilament yarn C, which is sandwiched between the front and back and fixed in position, is pulled out to the surface and cut to form a fluffy end.

In addition, the back thread d serves to fix the position of the fluff ends as described above and also serves as a reinforcing material for the entire fabric.

In forming this fluffy end, when a raising action is applied in the knitting direction of the warp end (surface), part or all of the multifilament yarn C is removed from the gaps between the chain stitches (that is, between the ridges). The filament is drawn out in a loop on the surface, and at the same time a fluffy end can be obtained by loop cutting.

Figure 2 shows the Corten-like fabric obtained in this way.
This is a cross-sectional view taken in a direction perpendicular to the knitting direction, in which part of the multifilament yarn c is pulled out from the gap between the chain-knitted monofilament a and the conductive fibers to the surface and cut to become a fluffy end C. ing.

When cleaning, for example, a record disc with a cloth in this way, the closeness to the record improves due to the moderate stiffness and flexibility of the cloth surface.

Moreover, the static electricity itself generated at that time is offset by the presence of the conductive fibers (b), but what is noteworthy here is that according to the fabric of the present invention, dust and dust on the record disc can be completely removed. It is.

As a result, the electric charge that would be generated by the contact friction between the record and the fabric of the present invention is generated as positive (or negative) on the record and negative (or positive) on the surface of the fabric. It is presumed that as a result of neutralizing discharge in an electrochemical sense, competing phenomena such as the attraction of dust and dirt to the generation of static electricity that are normally observed are eliminated.

In order to confirm these phenomena, the present inventors constructed the front of the warp knitted fabric shown in Figures 1 and 2 entirely with synthetic fiber (polyester) monofilament, and coated the surface with a commercially available nonionic antistatic agent. When using a record coated with a
There was a lot of dirt and dust scattered about.

In the present invention, the yarn a constituting part or all of the front is usually a synthetic fiber, especially a monofilament such as polyester or nylon, with a single yarn denier of 15 to 3Q.
A monofilament of 100.degree.

Furthermore, conductive fibers include fine metal powders such as silver, gold, copper, brass, nickel, aluminum, and tungsten, or conductive materials such as copper oxide and carbon black on the surface of chemical fibers such as polyester, nylon, polyacrylonitrile, polypropylene, and rayon. The synthetic resin (acrylic, epoxy, phenol, urethane, melamine, urea, polyester, vinyl, silicone...) and/or various rubbers (natural rubber,
Synthetic rubber (...) and conductive resin obtained by dispersing them in a composition containing these as main components are adhesively coated and have an electrical resistance value of ICPΩ/CrIt or less. is preferably used.

Such conductive fibers may be used alone (in the form of filaments), or they may be mixed with ordinary non-woven fibers by appropriate means such as blending, twisting, aligning or blending, and used in the form of threads containing conductive fibers. You can also.

In addition, the figure shows an example in which the conductive fibers are alternately monofilament (of course, several fibers may be alternated), but a similar method using monofilament only in the front is shown. Conductive fibers may be sewn into the knitted fabric at intervals of about 0.1 to 3 cm.

On the other hand, multifilament synthetic fibers are preferably used as yarns constituting the middle and back, but in the case of the former, it is essential that they are ultimately exposed on the surface of the knitted fabric to form fluffy ends, so the single fiber denier is It is desirable that it be about 3 de or less, preferably 2.5 de or less.

Furthermore, for those requiring extremely thin fluff ends, a multilayer lamination of different types of polymers or a conjugate fiber having a seabird structure may be used.

As for the thickness of the threads constituting the middle and back parts, it is sufficient that the former ranges from 50 to 100 de and the latter ranges from 30 to 75 de.

In addition, in the figure, a warp knitted fabric having a three-layer structure was explained as a typical example of the present invention, but in this case, the filament surface is entirely composed of monofilament, and the back is made of multifilament yarn and conductive fiber. It is also possible to knit one or several strands alternately arranged.

Furthermore, the middle part may be omitted and only the front and back parts are warp-knitted, and conductive fibers may be arranged in the form of knitting or sewing on a part of the front and/or back parts.

An example of the thread usage for the fabric according to the present invention is as follows.

(1) Front: a polyester monofilament)
(20de) b Conductive fiber polyester monofilament (20de) whose surface is adhesively coated with a conductive resin consisting of fine silver powder and middle rubber/phenolic adhesive (2) Middle; C polyester multifilament yarn 7
5de/36fil (3) Back; d Polyester multifilament 75de/36fil The above yarn is knitted using a Karl Mayer tricot knitting machine according to the organization chart shown in FIG.

Next, the obtained warp knitted fabric is treated with a napping machine to create middle yarn C.
About half of the filaments are pulled out to the front surface and cut to form a fluffy end.

This fabric is used to make a moquette for removing dust from record discs.

On the other hand, when a record that had been left indoors for a week (dust and dust had accumulated over the entire surface) was cleaned using the moquette described above, only one or two pieces of dust remained on the surface of the record.

At the same time, dust and dirt floating in the air did not adhere to the surface of the record immediately after dust removal.

As mentioned above, according to the present invention, a velvet-like surface is created by using a warp-knitted fabric that is structurally strong, and conductive fibers exhibiting neutralizing discharge ability are arranged on this surface. It has an excellent dust removal effect, and also neutralizes static electricity generated by contact friction, so it does not collect dust or dirt from records or other processing objects.
To provide a dust-removing fabric that is free from concerns about dust re-adhesion.

[Brief explanation of the drawing]

FIGS. 1A to 1C are organization diagrams of the warp knitted material used in the present invention, and FIG. 2 is a sectional view of the dust removal fabric according to the present invention. a: Yarn forming the front surface, b: Conductive yarn, c: Yarn forming the middle surface, d: Yarn forming the back surface, C' double fluff end.

Claims (4)

[Scope of utility model registration request] (1) In a velvet-like warp-knitted fabric in which the filament loops are cut to form free ends C and are exposed on the surface, the warp-knitted fabric is knitted by feeding yarn from two or more reeds, and the free ends C are The filament loops to be formed are knitted by yarn feeding from a reed other than the front reed, and the continuous conductive fibers mainly composed of chemical fibers are distributed at regular intervals in the warp direction of the warp knitted fabric. A dust-removing cloth characterized by being knitted with: (2) The warp knitted fabric is knitted by the yarn feeding from the front, middle, and back reeds, and has a three-layer structure of the front, middle, and back, and the filaments located in the middle are knitted with a satin structure, and a part of it is The fabric according to claim 1 of the utility model registration form, which forms a free end C'. (3) Utility model registration claim 1, item 2, wherein the front knitted by the yarn feeding of the front group is constituted by alternating arrangement of monofilaments and conductive fibers.
The fabric described in section. (4) The fabric according to any one of claims 1 to 3, in which conductive fibers are woven into a chain stitch.