Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1989-09-12
1991-01-22
Bell, James J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428289, 428291, 428297, 428303, 428489, B32B 2734
Patent
active
049870270
ABSTRACT:
A support web is described for roof foundation webs which comprises a spunbonded web of polyester filaments. The spunbonded web has a basis weight of 50 to 100 g/m.sup.2 and a filament denier of 1 to 8 dtex. It has been thermomechanically preconsolidated by means of a smooth calender and end-consolidated by means of a binder. This produces a high tear propagation resistance and nail removal resistance and good dimensional stability at high temperatures. The spunbonded web is therefore particularly suitable for use as a support web for bituminized roof foundation webs.
REFERENCES:
patent: 4714651 (1987-12-01), Hartmann et al.
Kaulich Franz
Schops Michael
Wagner Hans
Weiter Bertrand C.
Zerfass Karl-Christian
Bell James J.
Hoechst Aktiengesellschaft
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