High ash content absorbent paper for the decorative laminating industry and a process for preparing the same

• US 2,943,013 A
• Filed: 07/27/1956
• Issued: 06/28/1960
• Est. Priority Date: 07/27/1956
• Status: Expired due to Term

• Current Assignee: Hanns F. Arledter
• Original Assignee: Hanns F. Arledter
• Inventors: Arledter, Hanns F.
• Application Number:
  US03/600,411
• Time in Patent Office: 1,432 Days
• US Class Current: 162/145
• CPC Class Codes: D21H 13/40 vitreous, e.g. mineral wool, glass fibres
• CPC Class Codes: D21H 15/06 Long fibres, i.e. fibres exceeding the upper length limit of conventional paper-making fibres; Filaments
• CPC Class Codes: D21H 17/32 Guar or other polygalactomannan gum
• CPC Class Codes: D21H 17/51 Triazines, e.g. melamine
• CPC Class Codes: D21H 17/56 Polyamines; Polyimines; Polyester-imides
• CPC Class Codes: D21H 17/67 Water-insoluble compounds, e.g. fillers, pigments
• CPC Class Codes: D21H 17/675 Oxides, hydroxides or carbonates
• CPC Class Codes: D21H 17/68 siliceous, e.g. clays
• CPC Class Codes: D21H 27/26 characterised by the overlay sheet or the top layers of the structures decorative panels B44C5/04; wood grain effects B44F9/02

Claims

1. A HIGH ASH CONTENT ABAORBENT PAPER FOR THE DECORATIVE LAMINATING INDUSTRY WHICH IS LIGHTFAST CONSISTING OF AN INTERFELTED FIBROUS WEB CONTAINING FROM ABOUT 30% TO ABOUT 70% OF CELLULOSIC FIBERS, FROM ABOUT 70% TO ABOUT 30% RESPECTIVELY OF FILLER PARTICLES, FROM ABOUT 0.1% TO ABOUT 1% BASED ON THE FILLER AND FIBER CONTENT OF THE PAPER OF A MUCILAGINOUS SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF GUAR GUM, METHYLATED GUAR GUM, SODIUM ALGINATE, AND MANNOGALACTAN, AND FROM ABOUT 0.3% TO ABOUT 1.5% BASED ON THE FIBER AND FILLER CONTENT OF THE PAPER OF A RESIN SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENEIMINE, MELAMINE FORMALDEHYDE,AND UREA MELAMINE RESINS, SAID FILLER PARTICLES CONTAINING FROM ABOUT 20% TO ABOUT 40% OF SILICEOUS FILLER PARTICLES HAVING A SIZE OF FROM ABOUT 2 MICRONS TO ABOUT 8 MICRONS DIAMETER AND A REFRACTORY INDEX BELOW 2.3 AND FROM ABOUT 10% TO ABOUT 25% OF OPACIFYING FILLER PARTICLES HAVING A SIZE OF LESS THAN 1 MICRON DIAMETER, A REFRACTORY INDEX ABOVE 2.3 AND A COATING THEREON OF ALUMINUM HYDROXIDE TO IMPART LIGHTFASTNESS THERETO.