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Toothbrush

A toothbrush and bristle technology, applied in the field of toothbrushes, can solve the problems of reduced usability, residual toothpaste, thickening of the brush head, etc., and achieve the effect of maintaining usability, preventing the bristles from breaking, and ensuring strength

Active Publication Date: 2014-05-07
LION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, if the cushioning part is made too thick to prevent the bristles from breaking, the brush head itself will become thicker and usability will decrease.
If the base is made thin to maintain usability, the hair-planting holes of the base become shallow, and sufficient hair-planting strength cannot be obtained
[0013] In addition, as described in Patent Document 2, when chamfering the peripheral part of the hair transplant hole, there is a problem that toothpaste remains in the chamfered part.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A～5A

[0118] According to the specifications in Table 1A, the figure 1 The toothbrush 1 shown is the same toothbrush. PP was used as the primary resin constituting the base, and styrene elastomer resin (hardness 60) was used as the secondary resin constituting the buffer. Twenty bristles made by PTT (φ0.2mm) are made into tufts, and the tufts are folded into two with a tufting machine (manufactured by ZAHORANSKY) and put into 23 tufting holes together with flat wires (250shot / min) .

[0119] For the toothbrushes of each produced example, the easiness of lack of injection, burr generation, peeling, and flocking strength were evaluated, and the results are shown in Table 1A.

Embodiment 1B～8B

[0164] According to the specifications in Table 1B Figure 5 The toothbrush 301 shown is the same toothbrush (inclined surface 322: C surface). PP is used as the primary resin constituting the base, and styrene elastomer resin (hardness 60) is used as the secondary resin constituting the buffer. Twenty bristles made by PTT (φ0.2mm) were made into tufts, and the tufts were folded into two with a tufting machine (manufactured by ZAHORANSKY) and packed into 23 tufting holes together with flat wires (250shot / min) .

[0165] For the toothbrushes of each produced example, durability, bristle strength, head strength, and usability were evaluated, and the results are shown in Table 1B.

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Abstract

A toothbrush configured so that a shock-absorbing section for preventing the bristles from bending is prevented from peeling away. A toothbrush (1) wherein a head section (2) in which the bristles are implanted is configured in such a manner that the surfaces between a bristle implanting surface (5) in which the bristles are implanted and side surfaces (6) which are adjacent to the bristle implanting surface (5) are rounded surfaces (7), that bristle implanting holes (4) are formed in the bristle implanting surface (5), and that the peripheral edges (42) of the bristle implanting holes (4) are formed as a shock-absorbing section (30) which consists of a resin having a lower hardness than the material of a base (20). The shock-absorbing section (30) is joined in the regions of the rounded surfaces (7) to the base (20). The joint surfaces (22) between the shock-absorbing surface (30) and the base (20) are sloped surfaces which slope to the outer sides of the head section (2) relative to the bristle implanting surface (5).

Description

Technical field [0001] The invention relates to a toothbrush. [0002] This application claims priority based on Japanese Patent Application No. 2009-242457 and Japanese Patent Application No. 2009-242458 filed in Japan on October 21, 2009, and the content is incorporated herein. Background technique [0003] Fiber filaments composed of polyester resins such as polytrimethylene terephthalate (PTT) are cheaper than nylon, and are excellent in processability by chemical treatment, etc., so they are widely used as bristles of toothbrushes. In addition, polyester resins are superior in elongation recovery properties compared to nylon, and therefore, when used as bristles of toothbrushes, they have an advantage that the hair tips are not easily branched (Japanese: Kai き). [0004] Generally, toothbrushes have bristles implanted on a base made of relatively hard materials such as polypropylene resin (PP) and polyethylene terephthalate (PET). However, if the bristles are made of polyester ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A46B5/00A46B3/16
CPCA46B3/00A46B3/20A46B3/16A46B2200/1066A46B7/00A46B5/00
Inventor 奥田靖
Owner LION CORP
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