JP2012152329A - Cotton swab - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cotton swab by which a fiber massive part is prevented from falling from a shaft body without damaging the softness of the fiber massive part.SOLUTION: The cotton swab includes a shaft body 2 and a fiber massive part 3 by which fibers are wound and bonded at one end or both ends of the shaft body 2, and the fiber massive part 3 is provided partially with a reduced diameter part 4 compressed to the outer circumferential surface of the shaft body 2. The fiber massive part 3 is formed in the order of a small fiber massive part 5, the reduced diameter part 4 and a large fiber massive part 6 to the distal end direction of the shaft body 2 along the axial direction of the shaft body 2, and it is preferable that the outer edge corner part of an end face at one end or both ends of the shaft body is chamfered or formed in a curved surface shape.

Description

  The present invention relates to a cotton swab used in, for example, the hygiene medical field and the cosmetic field.

  Generally, a cotton swab is made by applying a lower paste to an end of a shaft body, adhering a fiber lump, and applying an upper paste to the surface of the fiber lump. Such cotton swabs are widely used in the fields of hygiene and medical care and cosmetics because of their high absorbency in addition to their softness and scraping action by fibers (see Patent Document 1, etc.).

However, for example, if the fiber lump portion of the cotton swab is pulled strongly, there is a possibility that a part of the fiber lump portion may tear and come off from the shaft body.
Therefore, the amount of the upper paste applied on the shaft side fiber mass part is increased to prevent the fiber mass part from being torn, but the problem is that the softness of the fiber mass part is impaired and the feeling of use becomes worse. there were.

JP 2008-272396 A

  Then, the subject of this invention is providing the cotton swab which prevented the fiber lump part falling off from a shaft, without impairing the softness of a fiber lump part.

The cotton swab of the present invention includes a shaft body and a fiber lump portion in which fibers are wound and bonded to one or both ends of the shaft body, and the fiber lump portion is reduced in diameter toward the outer peripheral surface of the shaft body. It has a part in part.
The fiber lump portion may be formed in the order of a small fiber lump portion, a reduced diameter portion, and a large fiber lump portion along the axial direction of the shaft body toward the distal end direction of the shaft body.
Furthermore, it is preferable that the outer edge corner portion of the end face at one end or both ends of the shaft body is formed in a chamfered or curved shape.

  According to the present invention, since the fiber lump part has a reduced diameter part that is compressed toward the outer peripheral surface of the shaft body, the drop of the fiber lump part is prevented even if the amount of the upper paste applied is small. In addition, there is an effect that the fiber lump is soft and the feeling of use is good.

It is a schematic side view which shows the low-density large diameter cotton swab which concerns on one Embodiment of this invention. It is a schematic side view which shows the cotton swab which concerns on other embodiment of this invention.

  Hereinafter, the swab of the present invention will be described with reference to the drawings. FIG. 1 shows a cotton swab 1 according to an embodiment of the present invention, which has a large diameter and low density compared to a normal cotton swab.

The cotton swab 1 includes a shaft body 2 and a fiber lump portion 3 in which fibers are wound and bonded to one end of the shaft body 2, and a part of the fiber lump portion 3 has a compressed reduced diameter portion 4. In the fiber lump portion 3, a small fiber lump portion 5, a reduced diameter portion 4, and a large fiber lump portion 6 are formed in this order along the axial direction of the shaft body 2 toward the distal end direction of the shaft body 2. As described above, the cotton swab 1 has the reduced diameter portion 4, so that the fastening strength to the shaft body 2 is high even when the amount of the upper paste applied is small, and the large fiber lump portion 6 can be prevented from falling off.
The large fiber lump portion 6 is a fiber lump portion 3 in which the length of the large fiber lump portion 6 in the axial direction of the shaft body 2 is longer than the length of the small fiber lump portion 5. The length of the small fiber lump 5 in the axial direction of the shaft body 2 is a fiber lump 3 that is shorter than the length of the large fiber lump 6.

Examples of the shaft body 2 include a paper shaft, a plastic shaft, and a wooden shaft. In the case of a paper shaft, for example, the paper shaft is manufactured by applying an adhesive to one side of a paper sheet punched or cut into a rectangular shape and winding it small.
Examples of the cross-sectional shape of the shaft body 2 include a circular shape, an elliptical shape, a flat shape, and a rectangular shape, and the diameter thereof is at least 1 mm, preferably about 1 to 3 mm.
It is preferable that the outer edge corner portion 7 of the end surface where the fiber mass portion 3 of the shaft body 2 is formed is chamfered. Further, instead of chamfering, a curved surface may be formed. Thereby, as shown in FIG. 1, since the distance d between the outer edge corner portion 7 and the surface of the fiber lump portion 3 can be increased, the hitting can be made soft when the cotton swab is used.

  The shaft body 2 has a fiber lump 3 at one end or both ends. When the fiber lump 3 is formed only at one end of the shaft body 2, a grip portion may be provided on the other end side of the shaft body 2 so as to be easy to hold, or different from the fiber lump 3. A fiber lump portion such as a spiral shape may be provided. Moreover, when the fiber lump 3 is formed in the both ends of the shaft body 2, the dimension, shape, etc. of each fiber lump 3 do not need to be the same.

  The fiber lump portion 3 is formed by applying a lower paste to the end of the shaft body 2 and winding and bonding the fibers.

  Examples of the fibers forming the fiber lump portion 3 include various natural fibers (cotton, silk, wool, etc.), regenerated fibers (rayon, cuvula, etc.) or synthetic fibers (polyester fibers, polypropylene fibers, etc.). In particular, cotton fibers such as absorbent cotton having good hygroscopicity are preferably used. These fibers may be used alone or in combination of two or more.

The shape of the fiber lump portion 3 is not particularly limited, and examples thereof include a water drop shape, an egg shape, a brush tip shape, a columnar shape, a straw shape, and a spherical shape. The small fiber lump portion 5 and the large fiber lump portion 6 are exemplified. Need not have the same shape.
The dimensions of the fiber lump 3 are usually about 8 to 16 mm in the axial direction of the shaft body 2 and about 3 to 10 mm in thickness (maximum diameter), but are not limited thereto.

  Examples of the lower paste include starch paste, polyvinyl alcohol, ethylene vinyl acetate copolymer, carboxymethyl cellulose, and the like.

The reduced diameter portion 4 in the fiber lump portion 3 is formed by compressing the fiber wound and bonded to the shaft body 2.
As a compression method for forming the reduced diameter portion 4, for example, there is a method in which a mold is pressed in the direction of the shaft body 2 against the fiber lump portion 3 wound and bonded to the shaft body 2 while rotating the shaft body 2. Can be mentioned.

The fiber density of the reduced diameter portion 4 is not particularly limited as long as the fiber density is sufficient to prevent or suppress the detachment of the fiber lump portion 3.
The size of the reduced diameter portion 4 is usually 4 to 10% of the width along the axial direction of the shaft body 2 with respect to the entire length of the fiber lump 3 and 5 to 60 with respect to the maximum diameter of the fiber lump 3. % Is preferred, but not limited thereto.

  The position in the fiber lump portion 3 where the reduced diameter portion 4 is formed is the small fiber lump portion 5, the reduced diameter portion 4 and the large fiber lump portion along the axial direction of the shaft body 2 toward the distal end direction of the shaft body 2. 6 is not particularly limited as long as the length of the large fiber lump 6 in the axial direction is longer than the length of the small fiber lump 5, and excellent water absorption of the fiber lump 3. From the viewpoint of ensuring performance and a soft touch during ear cleaning, the larger length of the large fiber lump 6 is more preferable.

  The axial length L of the large fiber lump portion 6 is not particularly limited, but is preferably 50 to 150 mm, and the thickness D1 of the large fiber lump portion 6 is not particularly limited, but is 3 to 15 mm. Preferred (see FIG. 1).

  It is preferable that an upper paste such as polyvinyl alcohol is applied to the surface of the fiber lump 3. The method for applying the upper paste is not particularly limited, and examples thereof include roll coating, spraying, showering, and a method using a brush. The timing of applying the upper paste may be before or after the formation of the reduced diameter portion 4. The application amount of the upper paste is in a range where the good softness of the fiber lump portion is not impaired, and thereby the feeling of use becomes good.

The swab of the present invention is not limited to the swab of the form shown in FIG. 1, and can also be applied to a swab having a normal shape as shown in FIG. In FIG. 2, the same members as those in FIG.
In addition, the fiber density of the fiber lump part 3 (small fiber lump part 5 and large fiber lump part 6) of the cotton swab shown in FIGS. 1 and 2 is usually 0.05 to 0.25 g / cm ³ . In particular, the fiber density of the fiber mass portion 3 in the cotton swab 1 having a low fiber density is preferably 0.05 to 0.15 g / cm ³ . When the fiber density is within the above range, high liquid absorption performance and soft touch can be realized.

  Since the above-described cotton swab is designed to prevent the fiber lump from coming off, it can be suitably used for industrial applications such as precision instrument manufacturing, hygiene medical applications, and cosmetic applications.

DESCRIPTION OF SYMBOLS 1, 8 Cotton swab 2 Shaft body 3 Fiber lump part 4 Reduced diameter part 5 Small fiber lump part 6 Large fiber lump part 7 Edge edge part of rod end face

Claims (3)

  A shaft body, and a fiber lump part in which fibers are wound and bonded to one or both ends of the shaft body, and the fiber lump part has a reduced diameter part compressed toward the outer peripheral surface of the shaft body. A cotton swab characterized by   The swab according to claim 1, wherein the fiber lump is formed in the order of a small fiber lump, a reduced diameter portion, and a large fiber lump along the axial direction of the shaft toward the distal end of the shaft. .   The swab according to claim 1 or 2, wherein an outer edge corner portion of an end face at one end or both ends of the shaft body is formed in a chamfered shape or a curved shape.

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