Patents Assigned to Ahlstrom Windsor Locks, LLC
  • Nonwoven web material for infusion packaging and method of making same
    Patent number: 6846382
    Abstract: A multi-phase, non-heat seal tea bag web material is provided with a pattern on either the top or bottom phases. The top phase is formed from fibers, such as hardwood, that provide a tighter or more dense fibrous phase than the vegetable fibers used in the base phase. Patterning can be provided during web formation by using a knuckled wire or by applying a fluid jet against the top of the web material. The sifting characteristics of the multi-phase web material are comparable to or better than that exhibited by single phase material.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: January 25, 2005
    Assignee: Ahlstrom Windsor Locks, LLC
    Inventors: Peter C. Scott, Helen Viazmensky
  • Wet-laid nonwoven web from unpulped natural fibers and composite containing same
    Patent number: 6762138
    Abstract: Wet-laid nonwoven webs having mechanical reinforcement properties are provided by employing unpulped vegetable fiber bundles as the predominant fiber component. The unpulped fiber bundles have a modulus of elasticity of about 2-5×106 psi and a chopped fiber length of about 25 mm. The fibers are cordage fibers including sisal, abaca, henequen, kenaf and jute. Composites of the unpulped fiber webs with cellulosic and spunbonded sheets find application as thermoformed vehicle interior trim products.
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: July 13, 2004
    Assignee: Ahlstrom Windsor Locks LLC
    Inventors: Rui B. Ferreira, Joseph A. Rieger