Lightweight glass fiber insulation

An insulation product for use as an aircraft insulation, comprising:

• a fibrous air laid blanket of randomly oriented, entangled, flame attenuated glass fibers bonded together by a thermosetting binder and having a mean diameter of about 1+/−0.25 microns;
• the glass fibers being made from a glass composition consisting essentially of, in mol percent:
• SiO2 66-69.7 Al2O3 0-2.2 RO 7-18 R2O 9-20 B2O3 0-7.1
• the glass composition having a C(acid)≧1.95, a C(bio)≦2.30, and a C(moist)≧2.40;
• the glass fibers have a biodissolution rate in excess of 150 ng/cm2/hr;
• the blanket having a density between about 0.45 and about 0.55 pounds per cubic foot and a thickness between about 0.35 inches and about 2.0 inches;
• and the blanket, exclusive of anything else, having an average machine direction tensile strength of at least 1.0 pounds/inch of blanket width and an average cross machine direction tensile strength of at least 0.4 pounds/inch of blanket length.

An insulation product for use as an aircraft insulation, comprising:

• a fibrous air laid blanket of randomly oriented, entangled, flame attenuated glass fibers bonded together by a thermosetting binder and having a mean diameter of about 1+/−0.25 microns;
• the glass fibers being made from a glass composition consisting essentially of, in mol percent:
• SiO2 66-69.7 Al2O3 0-2.2 RO 7-18 R2O 9-20 B2O3 0-7.1
• the glass composition having a C(acid)≧1.95, a C(bio)≦2.30, and a C(moist)≧2.40;
• the glass fibers have a biodissolution rate in excess of 150 ng/cm2/hr;
• the blanket having a density between about 1.1 and about 1.3 pounds per cubic foot and a thickness between about 0.35 inches and about 2.0 inches;
• and the blanket, exclusive of anything else, having an average machine direction tensile strength of at least 1.5 pounds/inch of blanket width and an average cross machine direction tensile strength of at least 0.8 pounds/inch of blanket length.

An insulation product for use as an aircraft insulation, comprising:

• a fibrous air laid blanket of randomly oriented, entangled, flame attenuated glass fibers bonded together by a thermosetting binder and having a mean diameter of about 1+/−0.25 microns;
• the glass fibers being made from a glass composition consisting essentially of, in mol percent:
• SiO2 66-69.7 Al2O3 0-2.2 RO 7-18 R2O 9-20 B2O3 0-7.1
• the glass composition having a C(acid)≧1.95, a C(bio)≦2.30, and a C(moist)≧2.40;
• the glass fibers having a biodissolution rate in excess of 150 ng/cm2/hr;
• the blanket having a density between about 0.25 and about 1.5 pounds per cubic foot and a thickness between about 0.35 inches and about 2.0 inches;
• the blanket, exclusive of anything else, having an average machine direction tensile strength of at least 0.6 pounds/inch and an average cross machine direction tensile strength of at least 0.3 pounds/inch;
• and the blanket having a transverse airflow resistance between about 300 Rayls and about 1800 Rayls.

An insulation product for use as aircraft insulation, comprising:

• a plurality of fibrous air laid blankets of randomly oriented, entangled, flame attenuated glass fibers bonded together by a thermosetting binder and having a mean diameter of about 1+/−0.25 microns;
• the glass fibers being made from a glass composition consisting essentially of, in mol percent:
• SiO2 66-69.7 Al2O3 0-2.2 RO 7-18 R2O 9-20 B2O3 0-7.1
• the glass composition having a C(acid)≧1.95, a C(bio)≦2.30, and a C(moist)≧2.40;
• the glass fibers have a biodissolution rate in excess of 150 ng/cm2/hr;
• the blankets each having major surfaces;
• the blankets being stacked with the major surfaces of the blankets in face to face relationship;
• each of the blankets having a density between about 0.25 and about 0.37 pounds per cubic foot and a thickness between about 0.35 inches and about 2.0 inches;
• each of the blankets exclusive of anything else having an average machine direction tensile strength of at least 0.6 pounds/inch and an average cross machine direction tensile strength of at least 0.3 pounds/inch;
• and
• the plurality of stacked blankets being held together by a film adhered to the stacked blankets.

An insulation product for use as aircraft insulation, comprising:

• a plurality of fibrous air laid blankets of randomly oriented, entangled, flame attenuated glass fibers bonded together by a thermosetting binder and having a mean diameter of about 1+/−0.25 microns;
• the glass fibers being made from a glass composition consisting essentially of, in mol percent:
• SiO2 66-69.7 Al2O3 0-2.2 RO 7-18 R2O 9-20 B2O3 0-7.1
• the glass composition having a C(acid)≧1.95, a C(bio)≦2.30, and a C(moist)≧2.40;
• the glass fibers have a biodissolution rate in excess of 150 ng/cm2/hr;
• the blankets each having major surfaces;
• the blankets being stacked with the major surfaces of the blankets in face to face relationship;
• each of the blankets having a density between about 0.45 and about 0.55 pounds per cubic foot and a thickness between about 0.35 inches and about 2.0 inches;
• each of the blankets exclusive of anything else having an average machine direction tensile strength of at least 1.0 pounds/inch of blanket width and an average cross machine direction tensile strength of at least 0.4 pounds/inch of blanket length;
• and
• the plurality of stacked blankets being held together by a film adhered to the stacked blankets.

An insulation product for use as aircraft insulation, comprising:

• a plurality of fibrous air laid blankets of randomly oriented, entangled, flame attenuated glass fibers bonded together by a thermosetting binder and having a mean diameter of about 1+/−0.25 microns;
• the glass fibers being made from a glass composition consisting essentially of, in mol percent:
• SiO2 66-69.7 Al2O3 0-2.2 RO 7-18 R2O 9-20 B2O3 0-7.1
• the glass composition having a C(acid)≧1.95, a C(bio)≦2.30, and a C(moist)≧2.40;
• the glass fibers have a biodissolution rate in excess of 150 ng/cm2/hr;
• the blankets each having major surfaces;
• the blankets being stacked with the major surfaces of the blankets in face to face relationship;
• each of the blankets having a density between about 1.1 and about 1.3 pounds per cubic foot and a thickness between about 0.35 inches and about 2.0 inches;
• each of the blankets exclusive of anything else having an average machine direction tensile strength of at least 1.5 pounds/inch of blanket width and an average cross machine direction tensile strength of at least 0.8 pounds/inch of blanket length;
• and
• the plurality of stacked blankets being held together by a film adhered to the stacked blankets.

An insulation product for use as aircraft insulation, comprising:

• a plurality of fibrous air laid blankets of randomly oriented, entangled, flame attenuated glass fibers bonded together by a thermosetting binder and having a mean diameter of about 1+/−0.25 microns;
• the glass fibers being made from a glass composition consisting essentially of, in mol percent:
• SiO2 66-69.7 Al2O3 0-2.2 RO 7-18 R2O 9-20 B2O3 0-7.1
• the glass composition having a C(acid)≧1.95, a C(bio)≦2.30, and a C(moist)≧2.40;
• the glass fibers have a biodissolution rate in excess of 150 ng/cm2/hr;
• the blankets each having major surfaces;
• the blankets being stacked with the major surfaces of the blankets in face to face relationship;
• each of the blankets having a density between about 0.25 and about 1.5 pounds per cubic foot and a thickness between about 0.35 inches and about 2.0 inches;
• each of the blankets exclusive of anything else having an average machine direction tensile strength of at least 0.6 pounds/inch of blanket width and an average cross machine direction tensile strength of at least 0.3 pounds/inch of blanket length;
• and each of the blankets having a transverse airflow resistance between about 300 Rayls and about 1800 Rayls;
• and
• the plurality of stacked blankets being held together by a film adhered to the stacked blankets.