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Brush head manufacturing method, and brush head

A head and bristle tuft technology, applied in the field of brush head assemblies without anchor bristle tufts, can solve the problems of slow manufacturing methods, loose bristles or bristle tufts, etc., and achieve cost-effective improvements

Active Publication Date: 2020-08-18
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, each of these current manufacturing methods has limitations and difficulties that make them slow, involve multiple steps and equipment, or have a higher than acceptable failure rate, resulting in the possibility of Loose bristles or bristle tufts coming out of the brush head

Method used

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  • Brush head manufacturing method, and brush head
  • Brush head manufacturing method, and brush head
  • Brush head manufacturing method, and brush head

Examples

Experimental program
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Embodiment Construction

[0041] The present disclosure describes various embodiments of methods for making a brush head assembly with bristle tufts retained in a retaining element secured in a molded elastomeric matrix by anchor-free tuft formation. More generally, applicants have recognized a need for improvements in manufacturing methods and products manufactured using anchor-free tuft formation. By molding the carrier, and in some arrangements, of the same or similar material as the bristle tufts, a high efficiency of manufacture is achieved and product quality is improved.

[0042] refer to Figures 1A-1B, in one embodiment, a schematic illustration of a brushhead assembly 10 is provided. More specifically, the brushhead assembly 10 may include, but is not limited to, a plurality of bristle tufts 21 disposed in a base 30 at the distal end of the neck 40 . That is, the distal portion 42 of the neck 40 , which is also referred to as a deck, may be at least partially enclosed within and connected t...

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Abstract

A brush head (10) and a method for manufacturing a brush head. The method includes forming a plurality of retention elements (52) each having an opening (51) therethrough. The retention elements (52)are positioned into corresponding recesses of a plate. A bristle tuft (21) is inserted into each of the openings of the retention elements. A proximal end (23) of each bristle tuft is bonded to the corresponding proximal side of the retention element to form a merged proximal end head portion (26) that secures the bristle tufts and the corresponding retention elements together as a plurality of merged tuft assemblies (20). A neck (40) of the brush head is positioned in relation to the merged tuft assemblies. A platen (42) of the neck and the merged tuft assemblies is at least partially encompassed in a matrix (30).

Description

technical field [0001] The present disclosure relates generally to methods for making a brush head assembly with anchorless bristle tufts overmolded with an elastomeric matrix. Background technique [0002] The brush heads of both manual and powered toothbrushes include bristles for cleaning the teeth, tongue and cheeks. In some toothbrushes, the bristles are pinned or anchored into the neck portion of the brush head. In other toothbrushes, the bristles are held in the brush head by a method commonly referred to as "anchor-free tufting" without the use of spikes. [0003] There are several ways of making brush heads using anchor-free tuft formation. In one method, groups or tufts of individual bristles are fused or welded together at one end, and the tufts are thereafter overmolded with a material that then hardens to form the brush head. In another method, bristle tufts welded at one end are inserted into holes in the neck of the brush, and either the neck material is he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A46D3/00A46D3/04
CPCA46D3/005A46D3/045A46B9/04
Inventor M·瓦驰M·梅德尔F·克佩尼格T·J·盖特纳
Owner KONINKLJIJKE PHILIPS NV
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