Method of making brushes, and brushes thus made
US4687257A · kind A · utility
Inventor
Key dates
| Filing date | May 29, 1986 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | May 29, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C15/041
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a method of making brushes for cleaning preferably bacteria-polluted surfaces, particularly the skin, gums or teeth, in which the body (1) of the brush shall be provided with a great many bristles (2) designed to collectively form a uniformly distributed bristle covering on the brush body (1) or parts thereof. To apply the bristles (2) to the brush body (1) in a very rapid and solid manner even though the body and the brush are very small, a surface (3) of polyamide material of the brush body (1) is supplied with a water-soluble organic acid (8) to dissolve the brush body surface (3) of polyamide material, whereupon bristles (2) of preferably polyamide material are attracted to the brush body (1) by electrostatic attraction so that those end portions (17) of each bristle which come in contact with the dissolved surface (3) of the brush body (1) are dissolved and caused to fuse with said surface to form a brush in which the body (1) and all bristles (2) are integrated into a unit. A brush product particularly suitable for dental care, which has been produced by this method, has a body (1) comprising an end portion (1a) devoid bristles to permit being graspe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.