Method for impregnation of wood component with solid paraffin wax, apparatus therefor and wood component so impregnated
US9682493B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 2009 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Aug 25, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/662
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for treating a piece of wood impregnates the piece of wood with a water repellent, wherein the water repellent is solid at ambient temperatures. The method includes the steps of providing a piece of wood to be treated; heating the piece of wood for a predetermined period of time, the piece of wood being heated at a temperature A; subsequently immersing at least a portion of the piece of wood in a bath of liquefied water repellent, the bath being at a temperature B, for a predetermined period of time. Thereafter the piece of wood is removed from the bath and allowed to cool. The temperature A is above 100° C. and the temperature B is below 100° C. but above a liquefying point for the water repellent, and a differential between temperatures A and B is at least 60° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.