Patents

Low Odor, Light Color, Disposable Article Construction Adhesive

November 4, 2008

Patented is a disposable diaper comprising a polyolefin film layer bonded to a synthetic nonwoven layer using a low odor hot melt construction adhesive. The adhesive penetrates the fiber of the nonwoven layer to embed the fiber in the adhesive. The construction adhesive comprises greater than about 40 weight percent of a copolymer comprising an ethylene vinyl acetate copolymer having 27±5 weight percent vinyl acetate having a melt index greater than 800 gm-10 min−1. It also has an effective amount less than 40 weight percent of a tackifying resin with a softening point greater than about 100°C and 0-5 weight percent of a wax. The weight ratio of the copolymer to the tackifying resin is greater than about 1:1 and the construction adhesive provides an initial adhesion between the polyolefin film layer and the synthetic nonwoven layer of at least 90 grams when applied by spiral spray to the polyolefin film layer at about 1 to 8 milligrams of adhesive per square inch.

Related Application:

  • Nonwovens in Construction

    Nonwovens in Construction

    Karen McIntyre, Editor||March 9, 2017
    As the housing market continues to recover, new products to keep buildings warm, dry and air-tight continue to enter the fold

  • Spunmelt Shifts Focus

    Spunmelt Shifts Focus

    Karen McIntyre, Editor||February 2, 2017
    Technology evolves to meet need to softness in hygiene while new markets for technology emerge.

  • 2016 Converter Review

    2016 Converter Review

    Tara Olivo, Associate Editor||October 10, 2016
    A look at the latest from providers of finishing, packaging, slitting, winding and other services to the nonwovens industry.