Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Embodying intertwined or helical component
Patent
1987-09-04
1989-02-21
McCamish, Marion C.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Embodying intertwined or helical component
428234, 428296, 428300, B32B 702
Patent
active
048064130
ABSTRACT:
The present invention provides a solution to the prior art problem of producing a high density papermakers batt fabric or felt which may be secured to an undamaged under layer in an economic manner. The present invention provides these improvements by providing a batt which is comprised of a non-woven low melt scrim to which the batt material is initially needled. Subsequent to producing a batt of the required density, the batt may, if desired, be needled or adhered to an under layer fabric. The completed felt will be subjected a heat pressing operation which will elevate the temperature of the batt to a temperature above the softening temperature of the scrim but below the melting point of the batt fibers. In this manner, the batt and under layer fabric are unified to produce a multilayer papermakers felt with minimum effort and disruption of the under layer.
REFERENCES:
patent: 4500588 (1985-02-01), Lundstrom
patent: 4565735 (1986-01-01), Murka, Jr. et al.
patent: 4601942 (1986-07-01), Finn et al.
Asten Group Inc.
McCamish Marion C.
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