Claims
- 1. A non-woven web comprising:
recycled cellulose fiber; recycled glass fiber, and a sizing agent which provides the mat with decreased liquid penetrability over time.
- 2. The apparatus of claim 1, wherein the sizing agent is alkenyl succinic anhydride.
- 3. The apparatus of claim 2, wherein the sizing agent has a dry basis add-on rate of from about 0.15 % to about 0.4%.
- 4. The apparatus of claim 2, wherein the sizing agent has a dry basis add-on rate of from about 0.2% to about 0.3%.
- 5. The apparatus of claim 1, wherein the sizing agent provides the mat with decreased liquid penetrability four weeks after mat production.
- 6. The apparatus of claim 1, further comprising untreated clarifier sludge.
- 7. The apparatus of claim 6, wherein the sizing agent is alkenyl succinic anhydride.
- 8. The apparatus of claim 7, wherein the sizing agent has a dry basis add-on rate of from about 0.15% to about 0.4%.
- 9. The apparatus of claim 7, wherein the sizing agent has a dry basis add-on rate of from about 0.2% to about 0.3%.
- 10. A non-woven web comprising:
recycled cellulose fiber; recycled glass fiber, and alkenyl succinic anhydride as a sizing agent.
- 11. The apparatus of claim 10, wherein the alkenyl succinic anhydride has a dry basis add-on rate of from about 0.15% to about 0.4%.
- 12. The apparatus of claim 10, wherein the alkenyl succinic anhydride has a dry basis add-on rate of from about 0.2% to about 0.3%.
- 13. The apparatus of claim 10, wherein the alkenyl succinic anhydride provides the mat with decreased liquid penetrability four weeks after mat production.
- 14. The apparatus of claim 10, further comprising untreated clarifier sludge.
- 15. The apparatus of claim 14, wherein the sizing agent has a dry basis add-on rate of from about 0.15% to about 0.4%.
- 16. The apparatus of claim 14, wherein the sizing agent has a dry basis add-on rate of from about 0.2% to about 0.3%.
- 17. A method of forming a non-woven web, the method comprising:
making a mixture of recycled cellulose fiber and recycled glass fiber; adding a sizing agent to the mixture; forming the mixture into a mat; choosing the sizing agent to provides the mat with decreased liquid penetrability over time.
- 18. The method of claim 17, wherein the sizing agent is alkenyl succinic anhydride.
- 19. The method of claim 17, further comprising adding the sizing agent at a dry basis add-on rate of from about 0.15% to about 0.4%.
- 20. The method of claim 17, further comprising adding the sizing agent at a dry basis add-on rate of from about 0.2% to about 0.3%.
- 21. The method of claim 17, wherein the sizing agent provides the mat with decreased liquid penetrability four weeks after mat production.
- 22. The method of claim 17, further comprising adding untreated clarifier sludge to the mixture.
- 23. The method of claim 22, wherein the sizing agent is alkenyl succinic anhydride.
- 24. The method of claim 22, further comprising adding the sizing agent at a dry basis add-on rate of from about 0.15% to about 0.4%.
- 25. The method of claim 22, further comprising adding the sizing agent at a dry basis add-on rate of from about 0.2% to about 0.3%.
- 26. A rigid cellular foam board comprising:
a first facer and a second facer; a rigid cellular foam formed between the first facer and the second facer; wherein at least one of the first facer and the second facer comprise:
recycled cellulose fiber; recycled glass fiber, and a sizing agent which provides the facer with decreased liquid penetrability over time.
- 27. The apparatus of claim 26, wherein the sizing agent is alkenyl succinic anhydride.
- 28. The apparatus of claim 26, wherein the sizing agent has a dry basis add-on rate of from about 0.15% to about 0.4%.
- 29. The apparatus of claim 26, wherein the sizing agent has a dry basis add-on rate of from about 0.2% to about 0.3%.
- 30. The apparatus of claim 26, wherein the sizing agent provides the facer with decreased liquid penetrability four weeks after facer production.
- 31. The apparatus of claim 26, wherein the foam is a polyisocyanurate foam.
- 32. The apparatus of claim 26, wherein at least one of the first facer and the second facer further comprise untreated clarifier sludge.
- 33. The apparatus of claim 32, wherein the sizing agent is alkenyl succinic anhydride.
- 34. The apparatus of claim 32, wherein the sizing agent has a dry basis add-on rate of from about 0.15% to about 0.4%.
- 35. The apparatus of claim 32, wherein the sizing agent has a dry basis add-on rate of from about 0.2% to about 0.3%.
BACKGROUND
[0001] This application claims the priority and benefit of United States Provisional Patent Application Serial No. 60/238,457, filed Oct. 10, 2000, which is incorporated by reference herein in its entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60238457 |
Oct 2000 |
US |