Brush product and method for the production thereof

Patent metadata

Field	Value
Publication number	US-11219303-B2
Application number	US-201716092707-A
Country	US
Kind code	B2
Filing date	Apr 12, 2017
Priority date	Apr 20, 2016
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A brush product, in particular a toothbrush, having a base body with a head part with a front and a rear side, which includes a bristle carrier with a longitudinal axis and a transverse axis and a bristle field protruding therefrom, wherein the bristle field is formed by at least one group of cleaning elements; a handle part; and a neck part connecting the head part and the handle part; wherein the bristle carrier is provided with bristles which are mounted without being anchored and wherein the bristle carrier includes substantially a central support area, an upper support area, a lower support area, a right support area and a left support area, in which the groups of cleaning elements are arranged. Also, a corresponding method and tool.

First claim

The invention claimed is:

1. A brush product comprising a basic body having
a head part with a front side and rear side having an overall thickness of 2.5 mm to 4 mm and which includes a bristle carrier with a longitudinal axis and a transverse axis as well as a bristle field protruding therefrom, wherein the bristle field is formed by a group of cleaning elements, the group of cleaning elements including puck bundles;
a handle part; and
a neck part which connects the head part to the handle part, wherein:
the bristle carrier is provided with bristles in an anchorless manner,
the bristle carrier comprises substantially a central carrier region, an upper carrier region, a lower carrier region, a right-hand carrier region and a left-hand carrier region, in which the puck bundles are arranged;
in the central carrier region the cleaning elements of a central puck bundle are arranged substantially symmetrically, in the upper carrier region the cleaning elements of an upper puck bundle are arranged above the transverse axis of the bristle carrier, in the lower carrier region the cleaning elements of a lower puck bundle are arranged below the transverse axis of the bristle carrier, in the right-hand carrier region the cleaning elements of a right-hand puck bundle are arranged to the right of the longitudinal axis of the bristle carrier and in the left-hand carrier region the cleaning elements of a left-hand puck bundle are arranged to the left of the longitudinal axis of the bristle carrier,
the cleaning elements of the central puck bundle comprise rounded bristles made from polyester and a dome-shaped topography,
the cleaning elements of the upper puck bundle, the lower puck bundle, the right-hand puck bundle and the left-hand puck bundle comprise tapered bristles made from polyester, and
the puck bundles assume a surface on the bristle carrier of at least 25 mm 2 .

2. The brush product as claimed in claim 1 , wherein at the puck bundles abut against one another.

3. The brush product as claimed in claim 1 , wherein the puck bundles assume a surface on the bristle carrier of at least 50 mm 2 .

4. The brush product as claimed in claim 1 , wherein the head part, the handle part and the neck part are formed from at least one hard and/or one or multiple soft material components.

5. The brush product as claimed in claim 4 , wherein the hard material component(s) is or are formed from styrene polymerizates such as styrene acrylonitrile (SAN), polystyrene (PS), acrylonitrile butadiene styrene (ABS), styrene methyl methacrylate (SMMA) or styrene butadiene (SB); polyolefins such as polypropylene (PP) or polyethylene (PE) (preferably also in the form of high density polyethylene (HDPE) or low density polyethylene (LDPE)); polyesters such as polyethylene terephthalate (PET) in the form of acid-modified polyethylene terephthalate (PETA) or glycol-modified polyethylene terephthalate (PETG), polybutylene terephthalate (PBT), acid-modified polycyclohexylene dimethyl terephthalate (PCT-A) or glycol-modified polycyclohexylene dimethyl terephthalate (PCT-G); cellulose derivatives such as cellulose acetate (CA), cellulose acetate butyrate (CAB), cellulose propionate (CP), cellulose acetate phthalate (CAP) or cellulose butyrate (CB); polyamides (PA) such as PA 6.6, PA 6.10 or PA 6.12; polymethyl methacrylate (PMMA); polycarbonate (PC); polyoxymethylene (POM); polyvinylchloride (PVC); polyurethane (PUR) and/or from polyamide (PA).

6. The brush product as claimed in claim 4 , wherein the hard material component is formed from polypropylene (PP) with a modulus of elasticity of between 1000 and 2400 N/mm 2 .

7. The brush product as claimed in claim 4 , wherein the soft material component(s) is or are formed from a thermoplastic styrene elastomer (TPE-S) (preferably a styrene ethylene butylene styrene copolymer (SEBS) or styrene butadiene styrene copolymer (SBS)); a thermoplastic polyurethane elastomer (TPE-U); a thermoplastic polyamide elastomer (TPE-A); a thermoplastic polyolefin elastomer (TPE-O); thermoplastic polyester elastomer (TPE-E) and/or silicone.

Assignees

• Trisa Holding Ag

Inventors

• Strähler Reto
• LÖTSCHER Jost
• Trevisan Oskar
• Zwimpfer Martin

Classifications

• B29C66/73921

  characterised by the materials of both parts being thermoplastics · CPC title

• B29C66/532

  Joining single elements to the wall of tubular articles, hollow articles or bars · CPC title

• B29L2031/425

  Toothbrush · CPC title

• B29C66/81427

  comprising a single ridge, e.g. for making a weakening line; comprising a single tooth · CPC title

• B29C66/81417

  being V-shaped · CPC title