Method for forming a relatively thick, lightweight, nonwoven insulating mat
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D06C-023/00
B32B-005/06
D04H-001/46
출원번호
US-0414768
(2006-04-28)
등록번호
US-7493679
(2009-02-24)
발명자
/ 주소
Meadows,Roger L.
출원인 / 주소
BGF Industries, Inc.
대리인 / 주소
Rhodes,C. Robert
인용정보
피인용 횟수 :
1인용 특허 :
23
초록▼
A method is provided for forming a relatively thick, lightweight, nonwoven insulating mat. The method includes the steps of forming a relatively thin, relatively dense first outer layer by needle punching a first batt of glass fibers and forming a relatively thin, relatively dense second outer layer
A method is provided for forming a relatively thick, lightweight, nonwoven insulating mat. The method includes the steps of forming a relatively thin, relatively dense first outer layer by needle punching a first batt of glass fibers and forming a relatively thin, relatively dense second outer layer by needle punching a second batt of glass fibers. A relatively thicker, relatively less dense intermediate batt of glass fibers is fed between the first and second layers. Thereafter, the first layer, intermediate batt, and second layer are needle punched together to form a multi-layer mat having a first layer, middle layer, and second layer.
대표청구항▼
I claim: 1. A method for forming a relatively thick, lightweight, needled nonwoven insulating mat of glass fibers, comprising: (a) forming a relatively thin, relatively dense first outer layer by needle punching a first batt of glass fibers at a prescribed needle punch density; (b) forming a relati
I claim: 1. A method for forming a relatively thick, lightweight, needled nonwoven insulating mat of glass fibers, comprising: (a) forming a relatively thin, relatively dense first outer layer by needle punching a first batt of glass fibers at a prescribed needle punch density; (b) forming a relatively thin, relatively dense second outer layer by needle punching a second batt of glass fibers at a prescribed needle punch density; (c) feeding a relatively thicker, relatively less dense intermediate batt of glass fibers between the first and second layers, and; (d) needle punching the first layer, intermediate batt, and second layer together at a lesser needle punch density then in steps (a) and (b) to form a multi-layer mat having a first layer, middle layer, and second layer in which the outer layers are denser than the intermediate layer. 2. The method of claim 1 wherein the mat has a thickness of at least one inch, a density of less than 5 pounds per cubic foot, and the middle layer is at least 5 times the thickness of each outer layer and no more than 65 percent the density of each outer layer. 3. The method of claim 1 wherein the glass fibers for the first outer layer, the second outer layer, and the intermediate batt are selected from the group consisting of e-glass, silica glass, and combinations thereof. 4. The method of claim 3 wherein the glass fibers each have a length of between about 2 and 4 inches. 5. The method of claim 1 wherein the densities of the first and second layers are substantially equal. 6. The method of claim 1 wherein: (a) each of the first, middle, and second layers are needle punched with felting needles; (b) the first and second layers are needled punched at a needle punch density of between about 500 and 600 punches per square inch; and (c) the first, second, and middle layers are needled punched together at a lesser needle punch density of between about 100 and 250 punches per square inch. 7. The method of claim 1 wherein the multi-layer mat has a thickness of between 1 inch and 2 inches, and a density of between about 4 pounds per cubic foot and 6 pounds per cubic foot.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (23)
Hiers John J. ; Fletcher John K., Acoustical insulating barrier and method of making the barrier.
Hunt Guilbert M. (Brecksville OH) Groth Hugh F. (Brecksville OH) Bochmann Carl E. (Brecksville OH), Method and apparatus for adhesively joining a plurality of superimposed material layers by a needling operation.
McGehee ; Sr. Fred N. (P.O. Box 568 Harvey LA 70058) Peck Billy J. (P.O. Box 568 Harvey LA 70058) Betz Clyde B. (P.O. Box 568 Harvey LA 70058) Morgan ; Jr. Calvin R. (P.O. Box 568 Harvey LA 70058), Method of construction for thermal and acoustic insulation blankets.
Alkire Roberta L. (Westerville OH) Evans Michael E. (Granville OH) Miller William S. (Newark OH), Process for improving parting strength of fiberglass insulation.
Appelt Bernd Karl ; Fotorny William Thomas ; Japp Robert Maynard ; Papathomas Kostantinos ; Poliks Mark David, Technique for forming resin-impregnated fiberglass sheets.
Rumiesz ; Jr. Joseph (16625 E. Dorado Ave. Aurora CO 80015) Walker Dixon R. (10 Mourning Dove La. Littleton CO 80127) Fay Ralph M. (2249 S. Hoyt Ct. Lakewood CO 80227), Thin high density glass fiber panel.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.