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Core-sheath composite filament for toothbrush and toothbrush obtained using the core-sheath composite filament

A toothbrush and filament technology, applied in the field of toothbrushes, can solve the problems of the toothbrush's bristle tip is easy to expand, cannot get a toothbrush, and durability declines, so as to achieve efficient removal of tartar and stains, ensure stain removal performance, and improve bristle tip expansion Effect

Active Publication Date: 2015-07-29
SUNSTAR KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as described in Patent Document 1, if a filament made of a single synthetic resin is used as the filament, although the stain removal performance can be improved, it may not be able to obtain suitable hardness as a toothbrush, or the bristles of the toothbrush tend to spread, Decreased durability and decreased usability when brushing teeth

Method used

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  • Core-sheath composite filament for toothbrush and toothbrush obtained using the core-sheath composite filament
  • Core-sheath composite filament for toothbrush and toothbrush obtained using the core-sheath composite filament
  • Core-sheath composite filament for toothbrush and toothbrush obtained using the core-sheath composite filament

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Embodiment Construction

[0041] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0042] like Figure 1 ~ Figure 4 As shown, the toothbrush 10 has the handle 12 provided with the hair-planting stand 11 at the front end, and the brush part 14 which consists of a plurality of hair bundles 13 planted on the hair-planting stand 11 . The filaments constituting the bristle bundle 13 have a core 2 made of synthetic resin fibers and a sheath 3 integrally covering the core 2, wherein the sheath 3 is made of synthetic resin that is compatible with the core 2. It is composed of an elastic body, and the bundle 13 including the core-sheath composite filament 1 having a quadrangular cross section perpendicular to the longitudinal direction can be used. In addition, in this embodiment, although the case where this invention was applied to the manual toothbrush 10 was demonstrated, this invention is applicable also to the brush part of an electric toothbrush.

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Abstract

Provided is a core / sheath composite filament for toothbrushes which exhibits excellent hardness, durability and feeling of use when used in toothbrushes, is less prone to falling out when tufted into the tufting plate, and makes it possible to improve stain-removal properties. Also provided is a toothbrush using said core / sheath composite filament. A toothbrush is configured using bundles of bristles configured from core / sheath composite filaments that have a quadrangular cross section in the plane perpendicular to the lengthwise direction and comprise a core (2), which is formed from a synthetic resin fiber, and a sheath (3), which integrally covers the core (2) and is formed from an elastomer that is compatible with the synthetic resin constituting the core (2). Tufts configured from a plurality of the core / sheath composite filaments (1) are tufted in the center portion of a tufting plate.

Description

technical field [0001] The present invention relates to a core-sheath composite filament for a toothbrush that can be suitably used for stain removal (color removal) on tooth surfaces, and a toothbrush using the core-sheath composite filament for a toothbrush. Background technique [0002] As a toothbrush filament, it is proposed to use a single synthetic resin material to form a rectangular cross-sectional shape perpendicular to the longitudinal direction to increase the contact area between the filament and the surface of the tooth. Fibrils that improve stain removal performance (for example, refer to Patent Document 1); and core-sheath composite filaments composed of hairs made of polyamide ultrafine fibers covered with a rubber layer, which are less irritating to the gums. Fibrils (for example, refer to Patent Document 2). [0003] In addition, as a core-sheath composite filament whose cross section is not circular, as a core / sheath combination, the following proposals ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A46D1/00
CPCA46B9/04A46D1/0207A46B2200/1066A46D1/0238
Inventor 加藤启介兵藤修久田中庸
Owner SUNSTAR KK
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