US20070119215A1 - Use of Corrugated Hose for Admix Recycling in Fibrous Glass Insulation - Google Patents
Use of Corrugated Hose for Admix Recycling in Fibrous Glass Insulation Download PDFInfo
- Publication number
- US20070119215A1 US20070119215A1 US11/626,682 US62668207A US2007119215A1 US 20070119215 A1 US20070119215 A1 US 20070119215A1 US 62668207 A US62668207 A US 62668207A US 2007119215 A1 US2007119215 A1 US 2007119215A1
- Authority
- US
- United States
- Prior art keywords
- admix
- fiber mat
- recycled fiber
- binder
- insulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 18
- 239000003365 glass fiber Substances 0.000 title claims abstract description 11
- 238000004064 recycling Methods 0.000 title claims abstract description 9
- 239000000835 fiber Substances 0.000 claims description 27
- 239000011230 binding agent Substances 0.000 claims description 12
- 239000011521 glass Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 210000002268 wool Anatomy 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000011491 glass wool Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011152 fibreglass Substances 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
Definitions
- Insulation assemblies and, more particularly mineral fibers, including fibrous glass insulation assemblies are known in the art. Fibrous insulation assemblies are used for insulating buildings. The insulation assemblies take the form of batts or rolls which are compressed for packaging and transport. Many prior art insulation assemblies are sized along their side edges by slicing or cutting the side edges to the desired shape and width.
- glass wool fibers are produced by processes which generate noncontinuous fibers of random lengths. Glass wool products are best known for their properties such as thermal or acoustical insulation, and as filtration media.
- glass compositions have been used for wool products. Factors affecting the choice of the glass composition are the availability and cost of the raw materials, the melting cost, the forming process used (glass liquidus and viscosity requirements), and the product properties (durability, resilience).
- the low-cost rock and slag wool compositions have a high liquidus and therefore cannot be formed by the rotary process.
- These compositions are fiberized instead by an air blast process or a rotating disk or multiple rotating drum process, resulting in a high-shot (droplets of glass that have not been fiberized) content.
- the glass must be resistant to water attack and, for some applications have good chemical durability.
- the fiber diameter of the wool products is an important indicator of its performance. In general, finer fiber products are more costly to produce, but provide better thermal and acoustical performance per pound of glass. Current technology can produce average fiber diameters that range from about 1 to 25 um. In a wool pack, the fiber diameter will vary considerably from the average value.
- a phenolic binder is added during the manufacturing process to bond the mat together.
- the amount of binder can vary between 4 and 15 percent by weight.
- the present method of use is directed to an improvement in the recycling of fibrous glass insulation, in order to reduce thermal conductivity and improve product appearance.
- the present invention relates to the use of corrugated hose for admix recycling in fibrous glass insulation, in order to reduce thermal conductivity and improve product appearance.
- the use of corrugated hoses serves to improve the opening of admix nodules, and reduces their density.
- corrugated it is meant shaped into folds, or parallel and alternating ridges and grooves.
- Advantages of the method of the present invention include (1) a more uniform appearance of product with less color and density contrast between virgin fibers and recycled admix, and (2) an improved thermal performance/reduced thermal conductivity.
- FIG. 1 is a diagrammatic view showing corrugated hoses in place of smooth metallic pipes in the admix recycling circuit.
- virgin fiber is produced and liquid binder applied to the fiber.
- Pieces of recycled fiber mat are also added in the forming section.
- the formed glass mat composed of virgin binder, uncured binder, and recycled fiber mat is then conveyed from the forming section to the curing oven where the oven cures the binder and sets the fiberglass mat to the proper thickness.
- the recycled fiber mat is conveyed to the forming section from the edge trim section near the exit of the curing oven. Referring to FIG. 1 , after the cured, hot fiberglass mat 10 exits the curing oven, it is cooled and then conveyed to the edge trim slitter section.
- the “slitters” on each side of the line then saw off the rough edges of the mat 11 and 12 to produce material 13 with square sides.
- the rough edge strips from the slitters are cut into small pieces in hammermills 14 and 15 and conveyed by edge trim fans 16 and 17 to the forming section (approximately 150 to 300 feet in length) through a corrugated hose 18 and 19 , rather than a smooth pipe.
- the admix is the cut, cured binder and fiber that is conveyed to the forming section.
- corrugated hoses improves the opening of admix nodules, and reduces their density.
- Advantageous outcomes include (1) a more uniform appearance of product, with less color and density contrast between virgin fibers and recycled admix, and (2) an improved thermal performance/reduced thermal conductivity.
- test results demonstrate the effectiveness of the present invention in terms of thermal performance improvement, using building insulation product: Admix with Corrugated Hose Standard (Admix with Smooth Pipe) A B Insulation Product Density 0.82 0.82 0.79 (lb./ft 3 )
- Admix with Corrugated Hose Standard (Admix with Smooth Pipe) A B Thickness (in.) 3.5 3.5 3.5 Thermal Conductivity 0.271 0.268 0.271 (BTU inch/hr ⁇ ft2° F.) R-value 12.91 13.08 12.91 (hr ⁇ ft2° F./BTU)
Abstract
The present invention relates to apparatus for improving the thermal performance of fibrous glass insulation in the admix recycling of the insulation, which includes corrugated hose in a recycling portion of the apparatus.
Description
- The present application is a divisional application of U.S. application Ser. No. 10/175,655, filed Jun. 20, 2002 (D0932-00258).
- Insulation assemblies and, more particularly mineral fibers, including fibrous glass insulation assemblies are known in the art. Fibrous insulation assemblies are used for insulating buildings. The insulation assemblies take the form of batts or rolls which are compressed for packaging and transport. Many prior art insulation assemblies are sized along their side edges by slicing or cutting the side edges to the desired shape and width.
- In contrast to textile and reinforcement fibers, glass wool fibers are produced by processes which generate noncontinuous fibers of random lengths. Glass wool products are best known for their properties such as thermal or acoustical insulation, and as filtration media.
- Various glass compositions have been used for wool products. Factors affecting the choice of the glass composition are the availability and cost of the raw materials, the melting cost, the forming process used (glass liquidus and viscosity requirements), and the product properties (durability, resilience). For example, the low-cost rock and slag wool compositions have a high liquidus and therefore cannot be formed by the rotary process. These compositions are fiberized instead by an air blast process or a rotating disk or multiple rotating drum process, resulting in a high-shot (droplets of glass that have not been fiberized) content.
- Due to the high surface area of the wool fibers, the glass must be resistant to water attack and, for some applications have good chemical durability.
- The most familiar application for wool products is for thermal insulation. The random intertwining of many small fibers effectively traps air within the insulation pack, thus providing the insulating properties. Also, the fibers tend to block radiative heat transfer due to their optical properties. The characteristics of fire resistance, chemical stability, and resistance to moisture attack male glass an ideal material for this application.
- The same ability to trap air makes glass fiber a suitable acoustical insulation. This has led to the use of glass fiber as ceiling and wall panels in buildings and vehicles, and to its use in air handling systems where noise control is important.
- The fiber diameter of the wool products is an important indicator of its performance. In general, finer fiber products are more costly to produce, but provide better thermal and acoustical performance per pound of glass. Current technology can produce average fiber diameters that range from about 1 to 25 um. In a wool pack, the fiber diameter will vary considerably from the average value.
- In most glass wool products, a phenolic binder is added during the manufacturing process to bond the mat together. Depending on the application, the amount of binder can vary between 4 and 15 percent by weight.
- The present method of use is directed to an improvement in the recycling of fibrous glass insulation, in order to reduce thermal conductivity and improve product appearance.
- The present invention relates to the use of corrugated hose for admix recycling in fibrous glass insulation, in order to reduce thermal conductivity and improve product appearance. The use of corrugated hoses serves to improve the opening of admix nodules, and reduces their density. By “corrugated” it is meant shaped into folds, or parallel and alternating ridges and grooves. Advantages of the method of the present invention include (1) a more uniform appearance of product with less color and density contrast between virgin fibers and recycled admix, and (2) an improved thermal performance/reduced thermal conductivity.
-
FIG. 1 is a diagrammatic view showing corrugated hoses in place of smooth metallic pipes in the admix recycling circuit. - The following is a preferred embodiment of the present invention:
- In the forming section where a glass mat is formed, virgin fiber is produced and liquid binder applied to the fiber. Pieces of recycled fiber mat are also added in the forming section. The formed glass mat composed of virgin binder, uncured binder, and recycled fiber mat is then conveyed from the forming section to the curing oven where the oven cures the binder and sets the fiberglass mat to the proper thickness. The recycled fiber mat is conveyed to the forming section from the edge trim section near the exit of the curing oven. Referring to
FIG. 1 , after the cured, hot fiberglass mat 10 exits the curing oven, it is cooled and then conveyed to the edge trim slitter section. The “slitters” on each side of the line then saw off the rough edges of themat material 13 with square sides. The rough edge strips from the slitters are cut into small pieces inhammermills edge trim fans corrugated hose - Note that after the admix handling fans, corrugated hoses are installed instead of the standard smooth metallic pipes for the admix recycling circuit.
- The use of corrugated hoses improves the opening of admix nodules, and reduces their density. Advantageous outcomes include (1) a more uniform appearance of product, with less color and density contrast between virgin fibers and recycled admix, and (2) an improved thermal performance/reduced thermal conductivity.
- The following test results (ASTM C518 at a mean temperature of 75 degrees F.) demonstrate the effectiveness of the present invention in terms of thermal performance improvement, using building insulation product:
Admix with Corrugated Hose Standard (Admix with Smooth Pipe) A B Insulation Product Density 0.82 0.82 0.79 (lb./ft3) -
Admix with Corrugated Hose Standard (Admix with Smooth Pipe) A B Thickness (in.) 3.5 3.5 3.5 Thermal Conductivity 0.271 0.268 0.271 (BTU inch/hr · ft2° F.) R-value 12.91 13.08 12.91 (hr · ft2° F./BTU) - Thus, for the same R-value as the standard approach, approximately 3.7% less material is required. This represents a significant improvement over conventional systems.
- While this invention has been described in terms of exemplary embodiments, it is not limited thereto. Rather, the appended claims should be construed broadly to include other variants and embodiments of the invention which may be made by those skilled in the art without departing from the scope and range of equivalents of the invention.
Claims (4)
1. In an apparatus adding recycled fiber mat in small pieces to virgin glass fibers having an uncured binder thereon, and the apparatus curing the binder to form a mat of insulation having the virgin glass fibers, the binder and the recycled fiber mat, the improvement comprising:
one or more fans impelling the recycled fiber mat through one or more corrugated pipes to reduce the density of the recycled fiber mat; and
the one or more corrugated pipes conveying the recycled fiber mat of reduced density prior to adding the recycled fiber mat of reduced density to the virgin glass fibers having an uncured binder thereon, such that the mat of insulation comprises the virgin glass fibers, the binder and the recycled fiber mat of reduced density that was conveyed through the one or more corrugated pipes.
2. In the apparatus of claim 1 , the improvement further comprising:
a recycling circuit comprising the one or more fans and the one or more corrugated pipes.
3. In the apparatus of claim 1 , the improvement further comprising:
hammermills cutting the recycled fiber mat into small pieces prior to the one or more fans impelling the recycled fiber mat through the one or more corrugated pipes.
4. In the apparatus of claim 3 , the improvement further comprising:
a recycling circuit comprising the hammermills, the one or more fans and the one or more corrugated pipes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/626,682 US20070119215A1 (en) | 2002-06-20 | 2007-01-24 | Use of Corrugated Hose for Admix Recycling in Fibrous Glass Insulation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/175,655 US7174747B2 (en) | 2002-06-20 | 2002-06-20 | Use of corrugated hose for admix recycling in fibrous glass insulation |
US11/626,682 US20070119215A1 (en) | 2002-06-20 | 2007-01-24 | Use of Corrugated Hose for Admix Recycling in Fibrous Glass Insulation |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/175,655 Division US7174747B2 (en) | 2002-06-20 | 2002-06-20 | Use of corrugated hose for admix recycling in fibrous glass insulation |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070119215A1 true US20070119215A1 (en) | 2007-05-31 |
Family
ID=29733934
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/175,655 Expired - Fee Related US7174747B2 (en) | 2002-06-20 | 2002-06-20 | Use of corrugated hose for admix recycling in fibrous glass insulation |
US11/626,682 Abandoned US20070119215A1 (en) | 2002-06-20 | 2007-01-24 | Use of Corrugated Hose for Admix Recycling in Fibrous Glass Insulation |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/175,655 Expired - Fee Related US7174747B2 (en) | 2002-06-20 | 2002-06-20 | Use of corrugated hose for admix recycling in fibrous glass insulation |
Country Status (1)
Country | Link |
---|---|
US (2) | US7174747B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8447963B2 (en) | 2002-06-12 | 2013-05-21 | Bladelogic Inc. | Method and system for simplifying distributed server management |
CN113199676A (en) * | 2021-06-23 | 2021-08-03 | 成都瀚江新材科技股份有限公司 | Cotton semi-manufactured goods cooling system device of glass |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5000788A (en) * | 1990-04-12 | 1991-03-19 | Sprout-Bauer, Inc. | Method for preparing starch based corrugating adhesives using waste wash water |
US5300438A (en) * | 1992-07-06 | 1994-04-05 | Augspurger Engineering | Composting apparatus |
US5578258A (en) * | 1994-05-09 | 1996-11-26 | Owens Corning Fiberglas Technology, Inc. | Method of making an insulation assembly |
US5611882A (en) * | 1993-08-11 | 1997-03-18 | Phenix Biocomposites, Inc. | Board stock and method of manufacture from recycled paper |
US6206050B1 (en) * | 1999-03-31 | 2001-03-27 | Certainteed Corporation | Hose used to install loose fill insulation |
US6227578B1 (en) * | 1997-12-25 | 2001-05-08 | Totaku Industries, Inc. | Corrugated resin elbow |
US6673280B1 (en) * | 2002-06-20 | 2004-01-06 | Certainteed Corporation | Process for making a board product from scrap materials |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US500000A (en) * | 1893-06-20 | Combined flush-tank and manhole | ||
BE505323A (en) * | 1950-11-22 | 1900-01-01 | ||
US3709670A (en) * | 1970-09-10 | 1973-01-09 | H Eriksen | Method, apparatus and system for fiberizing molten mineral material |
JPS5857536B2 (en) * | 1977-03-14 | 1983-12-20 | セントラル硝子株式会社 | Fiber aggregate manufacturing equipment |
US4244720A (en) * | 1978-11-08 | 1981-01-13 | Johns-Manville Corporation | Fiber waste and cullet collection process and apparatus therefor |
CA1116994A (en) * | 1979-08-03 | 1982-01-26 | Robert B. Simpson | Manufacture of glass fibre blowing wool |
US5035936A (en) * | 1989-02-08 | 1991-07-30 | Fiberglas Canada Inc. | Loose fill insulation product comprising mineral wool nodules |
US6565022B1 (en) * | 2000-08-25 | 2003-05-20 | Owens Corning Canada Inc. | Apparatus for and method of recycling chopped strand mat edge trim |
US20030049488A1 (en) * | 2001-09-06 | 2003-03-13 | Certainteed Corporation | Insulation containing separate layers of textile fibers and of rotary and/or flame attenuated fibers |
US20030087576A1 (en) * | 2001-11-08 | 2003-05-08 | Certainteed Corporation | Loose fill thermal insulation containing supplemental infrared radiation absorbing material |
-
2002
- 2002-06-20 US US10/175,655 patent/US7174747B2/en not_active Expired - Fee Related
-
2007
- 2007-01-24 US US11/626,682 patent/US20070119215A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5000788A (en) * | 1990-04-12 | 1991-03-19 | Sprout-Bauer, Inc. | Method for preparing starch based corrugating adhesives using waste wash water |
US5300438A (en) * | 1992-07-06 | 1994-04-05 | Augspurger Engineering | Composting apparatus |
US5611882A (en) * | 1993-08-11 | 1997-03-18 | Phenix Biocomposites, Inc. | Board stock and method of manufacture from recycled paper |
US5578258A (en) * | 1994-05-09 | 1996-11-26 | Owens Corning Fiberglas Technology, Inc. | Method of making an insulation assembly |
US6227578B1 (en) * | 1997-12-25 | 2001-05-08 | Totaku Industries, Inc. | Corrugated resin elbow |
US6206050B1 (en) * | 1999-03-31 | 2001-03-27 | Certainteed Corporation | Hose used to install loose fill insulation |
US6673280B1 (en) * | 2002-06-20 | 2004-01-06 | Certainteed Corporation | Process for making a board product from scrap materials |
Also Published As
Publication number | Publication date |
---|---|
US7174747B2 (en) | 2007-02-13 |
US20030233851A1 (en) | 2003-12-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |