Process of Producing Sculptured Lace from Flat Lace, US Patent No. 3498737
Sample pages
Page 1, at reduced quality. Open the document to read every page in full.
US Patent 3,498,737 (granted 3 March 1970) describes a chemical finishing process that turns machine-made flat lace into sculptured, relief-textured lace. Cellulosic lace is soaked in sodium hydroxide so that open areas shrink more than dense areas, then crosslinked with dimethylol ethylcarbamate for dimensional stability and easy care. The document includes two sheets of drawings, a detailed description of the process steps, nine examples with toughness, growth and shrinkage test data, and two claims.
- Type
- Patent
- Date
- March 3, 1970
- Language
- English
- Pages
- 7
(A free account is all you need)
From Ralph Griswold's Digital Archive, delivered by the University of Arizona.
Have missing pages or a better copy of this document, or another document to share? Contributing documents »