CA1138206A - Fibrous glass blowing insulation - Google Patents
Fibrous glass blowing insulationInfo
- Publication number
- CA1138206A CA1138206A CA000333177A CA333177A CA1138206A CA 1138206 A CA1138206 A CA 1138206A CA 000333177 A CA000333177 A CA 000333177A CA 333177 A CA333177 A CA 333177A CA 1138206 A CA1138206 A CA 1138206A
- Authority
- CA
- Canada
- Prior art keywords
- blanket
- columns
- cutting
- strips
- fibrous glass
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B30/00—Compositions for artificial stone, not containing binders
- C04B30/02—Compositions for artificial stone, not containing binders containing fibrous materials
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
- D01G1/02—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form
- D01G1/04—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form by cutting
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4218—Glass fibres
Abstract
ABSTRACT OF THE DISCLOSURE
Fibrous glass blowing insulation is made by slitting and cross-cutting a blanket of fibrous glass wool into small columns and conveying the columns to a bagging machine, the columns normally breaking up at random during conveying and packaging into approximate cubes and smaller flakes or prisms of various thicknesses.
Fibrous glass blowing insulation is made by slitting and cross-cutting a blanket of fibrous glass wool into small columns and conveying the columns to a bagging machine, the columns normally breaking up at random during conveying and packaging into approximate cubes and smaller flakes or prisms of various thicknesses.
Description
This invention relates generally to blowing wool insulation, and more particularly to fibrous glass flakes for blowing into enclosed spaces as insulation.
I'or a number of years the commercial process of making blowing wool insulation has included the use of a hammermill wherein rotating hammers in a casing break up masses of fibrous glass wool and force it through a plate having a plurality of orifices to form it into irregularly shaped nodules.
A non-commercial process of making blowing wool nodules is disclosed in United States Patent No. 2,219,285, issued on October 29, 1940, to Frank E. Allen and Harry V. Smith. In this patent, masses of fibrous glass wool are picked apart and the fibers are reformed into an even mat which is sprayed with water and slit and chopped into cubes. The cubes are advanced through troughs in which they are paddled by a series of rotating beater blades and rolled into nodules.
By the present invention, columns of fibrous glass blowing wool are produced and bagged without any beating or paddling into nodules. The columns break up at random, during the bagging process and when blown into place for insulation, into approximate cubes or smaller flakes of various thicknesses.
A smaller weight of flakes can be used than the weight of hammermilled nodules required for equivalent insulation value.
An object of the invention is to provide improved blowing wool insulation.
According to one aspect of the invention there is provided blowing insulation comprising the product formed by the multiple slitting of an elongated generally laminated fibrous glass blanket longitudinally and through its thickness to provide a plurality of strips and by the cutting of the strips transversely repeatedly at intervals spaced longitudinally of the blanket, the product initially being in the form of columns having a maximum dimension extending in the direction of the thickness of the blanket and the 1~ ` 1 ~.
. ~ , ` ~
'' .
1~l.3~ 0~
colun~ns breaking up at random into fibrous glass prisms, approximate cubesJ
and flakes of various thicknesses upon being conveyed and packaged.
According to another aspect of the invention there is provided a process of making blowing insulation comprising multiply slitting an elongated generally laminated fibrous glass blanket longitudinally and through its thickness into a plurality of strips, cutting the strips transversely into columns in such a manner that a maximum dimension of each column initially extends in the direction of the thickness of the blanket, and delaminating the columns by subjecting them to conveying and packaging to effect the breaking up thereof at random into fibrous glass prisms, approximate cubes, and flakes of various thicknesses.
Other objects and advantages will become apparent when the following specification is considered along with the accompanying drawings, in which:
Pigure 1 is a perspective view of a column of blowing wool as it could be made in accordance with the invention;
Figure 2 is a perspective view representative of approximate cubes or smaller flakes into which the column of Figure 1 breaks at random upon handling;
Figure 3 is a plan view of a column of blowing wool as it would be produced by the apparatus disclosed herein;
Figure 4 is a plan view of the column of Figure 1.
Figure 5 is a plan view of an alternatively shaped column of triangular cross section;
Figure 6 is a schematic side elevational view of apparatus used to produce the blowing wool insulation of the invention;
Figure 7 is a fragmentary end elevational view taken generally in the direction of arrows 7-7 of Figure 6;
~3~ 6 Figure 8 is a fragmentary enlarged perspective view of a slitting and crosscutting portion of the apparatus of Figure 6;
rligure 9 is a fragmentary enlarged side elevational view of a slltting and crosscutting porti.on of the apparatus ofl~'igure 6;
Figure 10 is a fragmentary sectional view taken generally along the line 10-lO of Figure 9;
Figure 11 is a fragmentary end elevational view of the apparatus of Figure 9; and Figure 12 is an enlarged cross sectional view of one of the ; - 2a -~3~Q6 crosscutting rolls of the apparatus of Figure 6.
With respect to the drawings, Figure 1 sho~s a column 20 of fibrous glass blowing insulation as it could be produced by the slitting and croSScutting of a fibrous glass blanket in accordance with the invention.
A pl~l view of the column 20 is shown in Figure 4. Figure 2 shows the column 20 broken apart into a representative approximate cube 20a and representative ~maller flakes 20b, 20c, 20d, 20e, 2Qf, 20g, 2Qh, 2Qi, and 20j. The column 2Q hreaks apart at random into flakes of various thicknesses upon handling, ~a~ging, and hlowing into an attic space as insulation. By way of example, lQ the column 20 may be about three and one-half to five inches in height and ~easure about one-half inch between each pair of opposite sides in the plan ~ie~, it being understood that other dimensions and shapes may be used without departing from the spirit and scope of the invention. Figure 3 shows an ~lternative diamond-shaped column 22 which would be produced by the apparatus disclosed herein and Figure 6 shows an alternatively shaped triangular column 24.
In Figure 6 apparatus for making the columns 22 of blowing wool sho~n. Streams 28 of molten glass are supplied from the forehearth 3Qa ~f a furnace 30b to conventional rotar~ fiberizers 32 to form veils 34 of gla~s fibers ~hich are collected on a conveyor 36 to form a fibrous glass hlanket 38. A binder, for example phenol formaldehyde resin, is sprayed on the glass fibers in the veils 34 by means not shown. Normally spraying nozzle5 are mounted on the outer shields of the rotary fiberizers 32. The blanket 38 is conveyed by a conveyor 39 through a curing oven 40 wherein the binder is cured to bond the fibers to each other. A rotary saw 42 downstream of the curing oven 40 slits the blanket 38 into two segments 38a and 38b, as b~t ~hQ~n in Figure 8, and a ~edge 44 moves the segments 38a and 38b apart bqf~re they~are ed bet~een a pair of compression rolls. 46 and 47. The ~3~;06 blanket segment 38a is then fed to an enclosed slitting and crosscutting mechanism 50 while the blanket segment 38b is fed to an identical slitting and crosscutting mechanism Sl (Figure 7). In the mechanism 5~ and Sl, the ~lanket segments are longitudinally slit and crosscut into columns such as the column 22 and the columns, by way of example, may be delivered to a common hopper 52a forming part of a conventional bagging machine 52. The bagging machine 52 includes a pair of ducts S2b and 52c having a common junction 52d joined to the hopper 52a. ~ithin the junction 52d is a p~votable diverting plate 52e which selectively blocks one of the ducts 52b and 52c while diverting the output of calumns 22 from the hopper 52a to the other duct. Each of the ducts is connected to a bagging chamber such as the chamber 52f having apiston 52g therein for compressing columns 22 into a bag 54.
The mechanis~ 5Q i5 ~est sho~n in yigures 9-11, it being understood that mechanism 51 is identical. The mechanism 50 includec a slitting roll 56 ~ith a back-up roll 58 and a rotary die or crosscutting roll 60 with a back-up roll 62, each roll having an appropriate shaft and bearings. A motor 64 having a sprocket wheel 66 drives the slitting roll 56 and the crosscutting roll 6Q b~ means of a chain 68 and sprocket ~heel~ 72 and 74 xespecti~el~
2Q operatively connected to the rolls.
The roll 56 includes a plurality af frusto-conical slitting discs.
T~e roll 60 resembles a double helical or herringbone gear with cutting edges as best shown in Figure 12.
Columns~suc~ as column 20 of Figures 1 and 4 could be cut with cutting edges extending axiall~ of the roll, but it is believed that the herringbone pattern, which cuts columns of dia~ond shape as shown in Pigure 3, w~ill result in longer life for the cutting edges, In actual practice, a small anount of clearance is provided between the slitting roll 3~2~
56 and its back-up roll 58 and also between the crosscutting roll 60 and its back-up roll 62. The blanket segments 38a and 38b are compressed during slitting and crosscutting, but the columns such as column 22 expand upon release back substantially to the orlginal blanket thickness.
In a test conducted to demonstrate the improvement provided by the invention, standard hammermilled blowing wool was compared with the blowing ~ool of this invention. The hammermilled blowing wool had a blown density (d~ of 0.67 and conductivity (K) of 0.461 at that density, while the glass wool flakes or prisms had a blown density of 0.475 and a conductivity of 0.529, the density being measured in pounds per cubic foot and the conducti-vit~ being measured in British thermal units/(hour) (square foot) (degree Fahrenheit/inch) at 75 degrees Fahrenheit mean temperature.
The amount of insulation required per unit of thermal resistance is directly proportional to the thermal conductivity and density. Using the above figures, for the same insulation value, only 81 percent as much weight of the flakes or prisms would have to be used as hammermilled blowing wool [(.529 x .~75)/(.461 x .67) = .81]. This represents a saving of 19% in the weight of glass wool required for the same insulation value.
The base wool, for example the wool in the blanket 38, from which the hammermilled blowing wool and the flaked blowing wool for the above test were produced, had a density of 0.615 pounds per cubic foot, a binder content of 4.5 percent, and a fiber diameter of 0.00028 inches.
I'or a number of years the commercial process of making blowing wool insulation has included the use of a hammermill wherein rotating hammers in a casing break up masses of fibrous glass wool and force it through a plate having a plurality of orifices to form it into irregularly shaped nodules.
A non-commercial process of making blowing wool nodules is disclosed in United States Patent No. 2,219,285, issued on October 29, 1940, to Frank E. Allen and Harry V. Smith. In this patent, masses of fibrous glass wool are picked apart and the fibers are reformed into an even mat which is sprayed with water and slit and chopped into cubes. The cubes are advanced through troughs in which they are paddled by a series of rotating beater blades and rolled into nodules.
By the present invention, columns of fibrous glass blowing wool are produced and bagged without any beating or paddling into nodules. The columns break up at random, during the bagging process and when blown into place for insulation, into approximate cubes or smaller flakes of various thicknesses.
A smaller weight of flakes can be used than the weight of hammermilled nodules required for equivalent insulation value.
An object of the invention is to provide improved blowing wool insulation.
According to one aspect of the invention there is provided blowing insulation comprising the product formed by the multiple slitting of an elongated generally laminated fibrous glass blanket longitudinally and through its thickness to provide a plurality of strips and by the cutting of the strips transversely repeatedly at intervals spaced longitudinally of the blanket, the product initially being in the form of columns having a maximum dimension extending in the direction of the thickness of the blanket and the 1~ ` 1 ~.
. ~ , ` ~
'' .
1~l.3~ 0~
colun~ns breaking up at random into fibrous glass prisms, approximate cubesJ
and flakes of various thicknesses upon being conveyed and packaged.
According to another aspect of the invention there is provided a process of making blowing insulation comprising multiply slitting an elongated generally laminated fibrous glass blanket longitudinally and through its thickness into a plurality of strips, cutting the strips transversely into columns in such a manner that a maximum dimension of each column initially extends in the direction of the thickness of the blanket, and delaminating the columns by subjecting them to conveying and packaging to effect the breaking up thereof at random into fibrous glass prisms, approximate cubes, and flakes of various thicknesses.
Other objects and advantages will become apparent when the following specification is considered along with the accompanying drawings, in which:
Pigure 1 is a perspective view of a column of blowing wool as it could be made in accordance with the invention;
Figure 2 is a perspective view representative of approximate cubes or smaller flakes into which the column of Figure 1 breaks at random upon handling;
Figure 3 is a plan view of a column of blowing wool as it would be produced by the apparatus disclosed herein;
Figure 4 is a plan view of the column of Figure 1.
Figure 5 is a plan view of an alternatively shaped column of triangular cross section;
Figure 6 is a schematic side elevational view of apparatus used to produce the blowing wool insulation of the invention;
Figure 7 is a fragmentary end elevational view taken generally in the direction of arrows 7-7 of Figure 6;
~3~ 6 Figure 8 is a fragmentary enlarged perspective view of a slitting and crosscutting portion of the apparatus of Figure 6;
rligure 9 is a fragmentary enlarged side elevational view of a slltting and crosscutting porti.on of the apparatus ofl~'igure 6;
Figure 10 is a fragmentary sectional view taken generally along the line 10-lO of Figure 9;
Figure 11 is a fragmentary end elevational view of the apparatus of Figure 9; and Figure 12 is an enlarged cross sectional view of one of the ; - 2a -~3~Q6 crosscutting rolls of the apparatus of Figure 6.
With respect to the drawings, Figure 1 sho~s a column 20 of fibrous glass blowing insulation as it could be produced by the slitting and croSScutting of a fibrous glass blanket in accordance with the invention.
A pl~l view of the column 20 is shown in Figure 4. Figure 2 shows the column 20 broken apart into a representative approximate cube 20a and representative ~maller flakes 20b, 20c, 20d, 20e, 2Qf, 20g, 2Qh, 2Qi, and 20j. The column 2Q hreaks apart at random into flakes of various thicknesses upon handling, ~a~ging, and hlowing into an attic space as insulation. By way of example, lQ the column 20 may be about three and one-half to five inches in height and ~easure about one-half inch between each pair of opposite sides in the plan ~ie~, it being understood that other dimensions and shapes may be used without departing from the spirit and scope of the invention. Figure 3 shows an ~lternative diamond-shaped column 22 which would be produced by the apparatus disclosed herein and Figure 6 shows an alternatively shaped triangular column 24.
In Figure 6 apparatus for making the columns 22 of blowing wool sho~n. Streams 28 of molten glass are supplied from the forehearth 3Qa ~f a furnace 30b to conventional rotar~ fiberizers 32 to form veils 34 of gla~s fibers ~hich are collected on a conveyor 36 to form a fibrous glass hlanket 38. A binder, for example phenol formaldehyde resin, is sprayed on the glass fibers in the veils 34 by means not shown. Normally spraying nozzle5 are mounted on the outer shields of the rotary fiberizers 32. The blanket 38 is conveyed by a conveyor 39 through a curing oven 40 wherein the binder is cured to bond the fibers to each other. A rotary saw 42 downstream of the curing oven 40 slits the blanket 38 into two segments 38a and 38b, as b~t ~hQ~n in Figure 8, and a ~edge 44 moves the segments 38a and 38b apart bqf~re they~are ed bet~een a pair of compression rolls. 46 and 47. The ~3~;06 blanket segment 38a is then fed to an enclosed slitting and crosscutting mechanism 50 while the blanket segment 38b is fed to an identical slitting and crosscutting mechanism Sl (Figure 7). In the mechanism 5~ and Sl, the ~lanket segments are longitudinally slit and crosscut into columns such as the column 22 and the columns, by way of example, may be delivered to a common hopper 52a forming part of a conventional bagging machine 52. The bagging machine 52 includes a pair of ducts S2b and 52c having a common junction 52d joined to the hopper 52a. ~ithin the junction 52d is a p~votable diverting plate 52e which selectively blocks one of the ducts 52b and 52c while diverting the output of calumns 22 from the hopper 52a to the other duct. Each of the ducts is connected to a bagging chamber such as the chamber 52f having apiston 52g therein for compressing columns 22 into a bag 54.
The mechanis~ 5Q i5 ~est sho~n in yigures 9-11, it being understood that mechanism 51 is identical. The mechanism 50 includec a slitting roll 56 ~ith a back-up roll 58 and a rotary die or crosscutting roll 60 with a back-up roll 62, each roll having an appropriate shaft and bearings. A motor 64 having a sprocket wheel 66 drives the slitting roll 56 and the crosscutting roll 6Q b~ means of a chain 68 and sprocket ~heel~ 72 and 74 xespecti~el~
2Q operatively connected to the rolls.
The roll 56 includes a plurality af frusto-conical slitting discs.
T~e roll 60 resembles a double helical or herringbone gear with cutting edges as best shown in Figure 12.
Columns~suc~ as column 20 of Figures 1 and 4 could be cut with cutting edges extending axiall~ of the roll, but it is believed that the herringbone pattern, which cuts columns of dia~ond shape as shown in Pigure 3, w~ill result in longer life for the cutting edges, In actual practice, a small anount of clearance is provided between the slitting roll 3~2~
56 and its back-up roll 58 and also between the crosscutting roll 60 and its back-up roll 62. The blanket segments 38a and 38b are compressed during slitting and crosscutting, but the columns such as column 22 expand upon release back substantially to the orlginal blanket thickness.
In a test conducted to demonstrate the improvement provided by the invention, standard hammermilled blowing wool was compared with the blowing ~ool of this invention. The hammermilled blowing wool had a blown density (d~ of 0.67 and conductivity (K) of 0.461 at that density, while the glass wool flakes or prisms had a blown density of 0.475 and a conductivity of 0.529, the density being measured in pounds per cubic foot and the conducti-vit~ being measured in British thermal units/(hour) (square foot) (degree Fahrenheit/inch) at 75 degrees Fahrenheit mean temperature.
The amount of insulation required per unit of thermal resistance is directly proportional to the thermal conductivity and density. Using the above figures, for the same insulation value, only 81 percent as much weight of the flakes or prisms would have to be used as hammermilled blowing wool [(.529 x .~75)/(.461 x .67) = .81]. This represents a saving of 19% in the weight of glass wool required for the same insulation value.
The base wool, for example the wool in the blanket 38, from which the hammermilled blowing wool and the flaked blowing wool for the above test were produced, had a density of 0.615 pounds per cubic foot, a binder content of 4.5 percent, and a fiber diameter of 0.00028 inches.
Claims (7)
PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Blowing insulation comprising the product formed by the multiple slitting of an elongated generally laminated fibrous glass blanket longitudinally and through its thickness to provide a plurality of strips and by the cutting of the strips transversely repeatedly at intervals spaced longitudinally of the blanket, the product initially being in the form of columns having a maximum dimension extending in the direction of the thick-ness of the blanket and the columns breaking up at random into fibrous glass prisms, approximate cubes, and flakes of various thicknesses upon being conveyed and packaged.
2. Blowing insulation as claimed in claim 1 wherein the cutting of the strips transversely is effected at an angle other than a right angle with respect to the direction of the initial longitudinal slitting of the blanket.
3. Blowing insulation as claimed in claim 1 wherein the cutting of the strips transversely is effected by a cutting roll having helical cutting edges.
4. Blowing insulation as claimed in any of claims 1-3 wherein the arithmetical product of the conductivity (k) and density (d) of the insula-tion in the blown condition thereof is less than 0.27, where (k) is measured in terms of British thermal units/(hour)(square foot)(degree Fahrenheit/inch) at 75 degrees Fahrenheit mean temperature and (d) is measured in terms of pounds per cubic foot (less than 5.37 where (k) is measured in terms of calories/(hour)(square centimeter)(degree Celsius/centimeter) at 24 degrees Celsius mean temperature and (d) is measured in terms of kilograms per cubic meter).
5. A process of making blowing insulation comprising multiply slitting an elongated generally laminated fibrous glass blanket longitudinally and through its thickness into a plurality of strips, cutting the strips trans-versely into columns in such a manner that a maximum dimension of each column initially extends in the direction of the thickness of the blanket, and delaminating the columns by subjecting them to conveying and packaging to effect the breaking up thereof at random into fibrous glass prisms, approximate cubes, and flakes of various thicknesses.
6. A continuous process of making blowing insulation comprising continu-ously forming glass fibers from molten glass, spraying the fibers with a thermosetting resin, continuously collecting the sprayed fibers on a moving conveyor to form a continuous elongated generally laminated fibrous glass blanket, conveying the blanket through an oven to cure the resin, multiply slitting the blanket longitudinally and through its thickness into a plurality of strips, cutting the strips transversely into columns in such a manner that a maximum dimension of each column initially extends in the direction of the thickness of the blanket, and delaminating the columns by subjecting them to conveying and packaging to effect the breaking up thereof at random into fibrous glass prisms, approximate cubes, and flakes of various thicknesses.
7. A process as claimed in claim 5 or claim 6 wherein the cutting of the strips transversely is effected by a cutting roll having helical cutting edges.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US93094678A | 1978-08-04 | 1978-08-04 | |
| US930,946 | 1978-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1138206A true CA1138206A (en) | 1982-12-28 |
Family
ID=25460002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000333177A Expired CA1138206A (en) | 1978-08-04 | 1979-08-03 | Fibrous glass blowing insulation |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS5523098A (en) |
| AU (1) | AU534597B2 (en) |
| BE (1) | BE878053A (en) |
| BR (1) | BR7904855A (en) |
| CA (1) | CA1138206A (en) |
| DE (1) | DE2930940A1 (en) |
| FI (1) | FI68215C (en) |
| FR (1) | FR2432492A1 (en) |
| GB (1) | GB2029461B (en) |
| MX (1) | MX153234A (en) |
| NO (1) | NO147554B (en) |
| NZ (1) | NZ191206A (en) |
| SE (1) | SE436564B (en) |
| ZA (1) | ZA793807B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5200269A (en) * | 1990-06-01 | 1993-04-06 | E. I. Du Pont De Nemours And Company | Apparatus and method for baling cut fibers and product |
| GB9808381D0 (en) * | 1998-04-22 | 1998-06-17 | Lancaster Glass Fibre | Treatment of fibrous material |
| US7226879B2 (en) * | 2003-12-30 | 2007-06-05 | Owens-Corning Fiberglas Technology Inc. | Multidensity liner/insulator formed from multidimensional pieces of polymer fiber blanket insulation |
| CN104153040A (en) * | 2014-07-14 | 2014-11-19 | 苏州盛达织带有限公司 | Herringbone fiber cutter |
| US10583977B2 (en) * | 2016-08-16 | 2020-03-10 | Mp Global Products, L.L.C. | Method of making an insulation material and an insulated mailer |
| US10551110B2 (en) | 2017-07-31 | 2020-02-04 | Pratt Retail Specialties, Llc | Modular box assembly |
| CN111519350B (en) * | 2020-04-30 | 2021-09-14 | 安徽新虹纺织有限公司 | Nano antibacterial non-woven fabric for mask and production process thereof |
-
1979
- 1979-07-19 MX MX178550A patent/MX153234A/en unknown
- 1979-07-25 ZA ZA00793807A patent/ZA793807B/en unknown
- 1979-07-26 NO NO792480A patent/NO147554B/en unknown
- 1979-07-30 BR BR7904855A patent/BR7904855A/en unknown
- 1979-07-30 GB GB7926459A patent/GB2029461B/en not_active Expired
- 1979-07-30 SE SE7906474A patent/SE436564B/en unknown
- 1979-07-31 DE DE19792930940 patent/DE2930940A1/en not_active Withdrawn
- 1979-08-01 JP JP9858579A patent/JPS5523098A/en active Pending
- 1979-08-03 AU AU49562/79A patent/AU534597B2/en not_active Ceased
- 1979-08-03 NZ NZ191206A patent/NZ191206A/en unknown
- 1979-08-03 CA CA000333177A patent/CA1138206A/en not_active Expired
- 1979-08-03 FR FR7919991A patent/FR2432492A1/en active Granted
- 1979-08-03 BE BE0/196578A patent/BE878053A/en not_active IP Right Cessation
- 1979-08-03 FI FI792427A patent/FI68215C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FI68215C (en) | 1985-08-12 |
| ZA793807B (en) | 1980-07-30 |
| SE7906474L (en) | 1980-02-05 |
| FI68215B (en) | 1985-04-30 |
| FI792427A (en) | 1980-02-05 |
| AU534597B2 (en) | 1984-02-09 |
| BR7904855A (en) | 1980-04-22 |
| MX153234A (en) | 1986-08-29 |
| GB2029461B (en) | 1982-12-15 |
| BE878053A (en) | 1979-12-03 |
| NO147554B (en) | 1983-01-24 |
| NO792480L (en) | 1980-02-05 |
| AU4956279A (en) | 1980-02-07 |
| NZ191206A (en) | 1982-05-31 |
| SE436564B (en) | 1985-01-07 |
| FR2432492A1 (en) | 1980-02-29 |
| GB2029461A (en) | 1980-03-19 |
| FR2432492B3 (en) | 1981-06-12 |
| JPS5523098A (en) | 1980-02-19 |
| DE2930940A1 (en) | 1980-02-21 |
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