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Patent Searching and Data


Title:
TOOTHBRUSH
Document Type and Number:
WIPO Patent Application WO/2018/135150
Kind Code:
A1
Abstract:
The present invention provides a toothbrush that has a flat-plate implanted head section in which warpage, resin whitening and cracks are prevented, ensures sufficient implanted bristle strength, and is easy to handle in the mouth. This toothbrush is provided with a head section (10) having a plurality of bristle implanting holes (13) on the bristle implanted surface (12), and bundles of a plurality of bristles are folded into two parts and implanted in the bristle implanting holes (13) using flat plates (15). The thickness of the head section (10) is 2.0-4.0 mm, the bristle implanting hole density of the bristle implanting holes (13) is 25 holes/cm2 or more, and the toothbrush satisfies the relationship: 0.37 mm ≤ (X - d)/2 ≤ 0.55 mm, wherein X is the inner diameter of the bristle implanting holes, d is the thickness of the flat plates, and X is 0.9-1.3 mm.

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Inventors:
NOZAWA Saya (3-7 Honjo 1-chome, Sumida-k, Tokyo 44, 〒1308644, JP)
KANAMARU Naoshi (3-7 Honjo 1-chome, Sumida-k, Tokyo 44, 〒1308644, JP)
Application Number:
JP2017/043066
Publication Date:
July 26, 2018
Filing Date:
November 30, 2017
Export Citation:
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Assignee:
LION CORPORATION (3-7 Honjo 1-chome, Sumida-ku Tokyo, 44, 〒1308644, JP)
International Classes:
A46B5/00; A46B3/16; A46B9/04
Foreign References:
JP2011024839A2011-02-10
JP2016193073A2016-11-17
JP2001309818A2001-11-06
Attorney, Agent or Firm:
TAZAKI Akira et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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