Veneer Splicer Problems 6: Blue Staining
Troubleshooting checklist for dealing with staining that occurs during veneer splicing operations. January 4, 2007
Reprinted with permission from Diehl Machines, www.diehlmachines.com.
| Veneer Blue Staining |
Metallic stain marks on either side of the glue line caused by condensation and moisture. More common on high humidity days. Generally exist in coarse grained oak. On veneer already stained, the ink can be removed by applying a 10% oxalic solution to the stain. | Moisture content of veneer is too high. | Dry veneer to lower moisture content. Store in humidity controlled area. | Glue is wet when veneer is spliced. | Allow the glue to dry completely before splicing. | Humidity in area is high. | Reduce the temperature setting as much as possible and increase the feed rate. | Install a compressed air jet blowing on each pressure chain in the pressure bar. | Install a hot air gun in the center hole in top of the pressure bar. | Install chrome plated chains. |
See other articles in this series at:
Overlapping
Mismatching
Burning, Burnishing, Crimping
Marking of Stock, Grooving Along the Glue Line, Incomplete Glue Joint
Poor Jointing, Excessive Glue Spread, Crimping
Reprinted with permission from Diehl Machines, www.diehlmachines.com.
Would you like to add information to this article?
Interested in writing or submitting an article?
Have a question about this article?
Have you reviewed the related Knowledge Base areas below?
KnowledgeBase: Knowledge Base
KnowledgeBase: Veneer
KnowledgeBase: Veneer: Processing And Manufacturing
Would you like to add information to this article? ...
Click Here
If you have a question regarding a Knowledge Base article, your best chance at uncovering an answer is to search the entire Knowledge Base for related articles or to post your question at the appropriate WOODWEB Forum. Before posting your message, be sure to review our Forum Guidelines.
Questions entered in the Knowledge Base Article comment form will not generate responses! A list of WOODWEB Forums can be found at WOODWEB's Site Map.
When you post your question at the Forum, be sure to include references to the Knowledge Base article that inspired your question. The more information you provide with your question, the better your chances are of receiving responses.
Return to beginning of article.
|
