초록 ▼

The present invention provides a process comprising the steps of (a) applying less than about 0.1 grams per square meter (gsm) of a release agent to a transfer surface, wherein the release agent is selected such that a test sample of the release agent having a concentration at or above its critical

The present invention provides a process comprising the steps of (a) applying less than about 0.1 grams per square meter (gsm) of a release agent to a transfer surface, wherein the release agent is selected such that a test sample of the release agent having a concentration at or above its critical surface tension concentration, has a surface tension of less than about 50 dyne/cm or forms a contact angle with the material of the transfer surface of less than about 120°; (b) applying an adhesive to the transfer surface; and (c) transferring the adhesive from the transfer surface to a material web. Preferred embodiments are provided where the transfer surface is metals, polymers, elastomers, ceramics, wood, or combinations thereof and the release agent has the formula: X--CF2O--(C2F4O)p--(CF2O)q--CF2--X. Additional embodiments are provided to continuous and intermittent processes.

대표청구항 ▼

The present invention provides a process comprising the steps of (a) applying less than about 0.1 grams per square meter (gsm) of a release agent to a transfer surface, wherein the release agent is selected such that a test sample of the release agent having a concentration at or above its critical

The present invention provides a process comprising the steps of (a) applying less than about 0.1 grams per square meter (gsm) of a release agent to a transfer surface, wherein the release agent is selected such that a test sample of the release agent having a concentration at or above its critical surface tension concentration, has a surface tension of less than about 50 dyne/cm or forms a contact angle with the material of the transfer surface of less than about 120°; (b) applying an adhesive to the transfer surface; and (c) transferring the adhesive from the transfer surface to a material web. Preferred embodiments are provided where the transfer surface is metals, polymers, elastomers, ceramics, wood, or combinations thereof and the release agent has the formula: X--CF2O--(C2F4O)p--(CF2O)q--CF2--X. Additional embodiments are provided to continuous and intermittent processes. im 5, wherein heating the binder and insulation layers to a second temperature comprises heating the binder and insulation layers to a temperature between about 200° F. to about 500° F., and higher than said first temperature. 10. The method of claim 5, wherein heating the binder and insulation layers to a third temperature comprises heating the binder and insulation layers to a temperature between about 800° F. and 1000° F. 11. The method of claim 5, wherein heating the binder and insulation layers to a fourth temperature comprises heating the binder and insulation layers to a temperature between about 1200° F. and about 2500° F. 12. The method of claim 1, wherein the inner and outer insulation layers are machined to a predetermined shape subsequent to curing of the binder.