IP Library Granted Patent US 9,555,153
Granted Patent B2
US 9,555,153 · App. 14/127,303 · Granted Jan 31, 2017

Cotton bud

Inventors: Beat Häni (Zuzwil, CH); Christian Rytka (Wehr, DE); Guy Petignat (Erlenbach, CH)
Assignee: ROWEG HOLDING AG
A61L15/62A61F13/38A61F13/385A61L15/225A61L15/28A61L15/32A61L15/34B29C47/0066
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Quick Facts
Patent No.
US 9,555,153
App. No.
14/127,303
Granted
Jan 31, 2017
Kind
B2
Abstract

A cotton bud with a rod-like grip body and with a bud body that is arranged at least at one free end of the grip body. The rod-like grip body is a biologically degradable extrusion body, and includes natural fibers embedded into a material matrix.

Claims (16)

1. A cotton bud with a rod-like grip body and with a bud body that is arranged at least at one free end of the grip body, wherein the rod-like grip body is a biologically degradable extrusion body that comprises cellulose fibres as well as a material matrix, wherein the cellulose fibres are held together via the material matrix acting as a binding agent, wherein apart from the cellulose fibres the grip body comprise long fibres having lengths of greater than or equal to 5 mm for reinforcement of the grip body.

2. The cotton bud according to claim 1 , wherein the material matrix acts as a binding agent and comprises a material selected from the group consisting of: starch, sugar, lignin, chitin, gelatine, proteins, glycerine, fructose, methyl cellulose, agar-agar, wax, pectin and/or biologically degradable polymers.

3. The cotton bud according to claim 1 , wherein the grip body comprises 10 to 90% by volume of cellulose fibres.

4. The cotton bud according to claim 1 , wherein the cellulose fibres are aligned in the longitudinal direction of the rod-like grip body.

5. The cotton bud according to claim 1 , wherein the long fibres are cotton fibres.

6. The cotton bud according to claim 1 , wherein the cellulose fibres are secondary fibres of a recycled material or comprise secondary fibres of a recycled material.

7. The cotton bud according to claim 1 , wherein the cellulose fibres are primary fibres or comprise primary fibres which are obtained directly from wood or wood waste.

8. A rod-like grip body for a cotton bud, wherein the grip body is manufactured from a biologically degradable extrusion body, and comprises cellulose fibres embedded into a material matrix, and wherein, apart from the cellulose fibres, the grip body comprises long fibres having lengths of greater than or equal to 5 mm.

9. A method for manufacturing a rod-like grip body for a cotton bud, said rod-like grip body being manufactured from a biologically degradable extrusion body and comprising cellulose fibres embedded into a material matrix, and wherein, apart from the cellulose fibres, the grip body comprises long fibres having lengths of greater than or equal to 5 mm, the method comprising the steps of:

mixing cellulose fibres with a biologically degradable matrix material into an extrudable extrusion mass in a mixing device;

extruding the extrusion mass through an extrusion nozzle amid the formation of an elongate extrusion body;

curing the extrusion body.

10. The method according to claim 9 , wherein water is added during the mixing of the extrusion mass.

11. The method according to claim 9 , wherein the extrusion mass is mixed in an extruder screw.

12. The method according to claim 9 , wherein the extrusion body is cut to length into individual grip bodies before, during or after the curing.

13. The method according to claim 9 , wherein the curing is a solidifying or drying of the extrusion body.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 26, 2014
From: HANI, BEAT; PETIGNAT, GUY; RYTKA, CHRISTIAN
To: ROWEG HOLDING AG
Reel/Frame 032301/0681 →
Priority Claims (1)
CH 1077/11 · Jun 24, 2011 · national
Continuity (1)
Related Publication 20140289986A1 · Oct 2, 2014