WO2003021026A1 - Vorrichtung zum thermischen verfestigen eines faservlieses aus mit bindefasern gemischten naturfasern, insbesondere hanffasern - Google Patents
Vorrichtung zum thermischen verfestigen eines faservlieses aus mit bindefasern gemischten naturfasern, insbesondere hanffasern Download PDFInfo
- Publication number
- WO2003021026A1 WO2003021026A1 PCT/AT2002/000256 AT0200256W WO03021026A1 WO 2003021026 A1 WO2003021026 A1 WO 2003021026A1 AT 0200256 W AT0200256 W AT 0200256W WO 03021026 A1 WO03021026 A1 WO 03021026A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fibers
- conveyor
- nonwoven
- nonwoven fabric
- conveyor belt
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 64
- 244000025254 Cannabis sativa Species 0.000 title claims abstract description 8
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 title claims abstract description 8
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 title claims abstract description 8
- 235000009120 camo Nutrition 0.000 title claims abstract description 8
- 235000005607 chanvre indien Nutrition 0.000 title claims abstract description 8
- 239000011487 hemp Substances 0.000 title claims abstract description 8
- 239000004745 nonwoven fabric Substances 0.000 claims description 26
- 238000005728 strengthening Methods 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 238000007596 consolidation process Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 241000208202 Linaceae Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- 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
- D04H1/4266—Natural fibres not provided for in group D04H1/425
-
- 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
- D04H1/425—Cellulose series
-
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
-
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
-
- 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
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/7654—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising an insulating layer, disposed between two longitudinal supporting elements, e.g. to insulate ceilings
- E04B1/7658—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising an insulating layer, disposed between two longitudinal supporting elements, e.g. to insulate ceilings comprising fiber insulation, e.g. as panels or loose filled fibres
- E04B1/7662—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising an insulating layer, disposed between two longitudinal supporting elements, e.g. to insulate ceilings comprising fiber insulation, e.g. as panels or loose filled fibres comprising fiber blankets or batts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B2001/742—Use of special materials; Materials having special structures or shape
- E04B2001/745—Vegetal products, e.g. plant stems, barks
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B2001/7687—Crumble resistant fibrous blankets or panels using adhesives or meltable fibres
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
Definitions
- the invention relates to a device for thermally strengthening a nonwoven fabric made from natural fibers mixed with binding fibers, in particular hemp fibers, with a sieve drum vacuumed in a litter area for aerodynamic nonwoven laying and with a continuous furnace, which is preceded by an infeed conveyor consisting of two rotating conveyor belts arranged one above the other mutually opposite conveying strands form a conveying channel for the nonwoven fabric that tapers in the direction of passage.
- Continuous furnaces are used for the thermal consolidation of the aerodynamically laid nonwovens, in which the nonwoven is guided between conveyor belts under a corresponding pressure load and at the same time is subjected to heat treatment, for example with hot air.
- An infeed conveyor with two conveyor belts arranged one above the other is used to introduce the nonwoven fabric into the continuous furnace to be able to. Due to the mechanical properties, in particular the natural fibers, there is often a preferred direction for the fiber layer within the fiber structure transversely to the nonwoven plane in the aerodynamic nonwoven laying, especially in the case of thicker nonwovens, which noticeably impairs the insulating properties of the insulating material mats produced from such a nonwoven. The preferred direction with regard to the fiber layer hardly changes when the nonwoven is compressed to the insulation mat and is permanently retained by the subsequent thermal consolidation of the nonwoven.
- the invention is therefore based on the object of designing the production of thermal insulation mats by thermally strengthening a nonwoven fabric from a natural fiber / binder fiber mixture in such a way that there is a fiber orientation with an essential component parallel to the nonwoven plane, with the aid of simple construction measures.
- the invention achieves the object in that the two conveyor belts of the infeed conveyor can be driven at different conveying speeds.
- the different conveyor speeds of the two conveyor belts of the infeed conveyor result in a stretching effect on the nonwoven because the surface fibers in the area of the slower conveyor belt are retained compared to the surface fibers in the area of the faster conveyor belt.
- This stretching effect on the increasingly compacted nonwoven is accompanied by a directional effect on the fibers, which are thus reoriented. Due to this reorientation of the fibers within the fiber structure, the thermal insulation properties of the thermal insulation mats can be improved accordingly, which are obtained from the nonwovens stretched and compressed with the aid of the infeed conveyor by thermal consolidation.
- the infeed conveyor is generally fed via a conveyor belt, the conveyor strand of which is aligned with the conveying strand of the lower conveyor belt of the infeed conveyor, there are particularly advantageous design conditions with regard to the compression and reorientation of the fiber structure of the nonwoven fabric fed to the continuous furnace if the upper conveyor belt with the opposite horizontally running conveyor run of the lower conveyor belt inclined conveyor run at a greater rotational speed than the lower conveyor belt is driven.
- the stretching effect of the conveying strands delimiting the tapering conveying channel on the nonwoven primarily depends on the difference in the rotational speeds of the two conveyor belts of the infeed conveyor. Appropriate control of the rotational speed, in particular of the upper conveyor belt, can thus influence the reorientation of the nonwoven fibers during conveyance by the infeed conveyor.
- the sieve drum required for laying the nonwoven can be turned on in one direction the pick-up area adjoining the litter area form a further suction zone.
- the suction zone of the take-off area air is sucked in outside of the litter area through the already laid nonwoven with the effect that the fibers of the nonwoven fabric lying against the screen drum are held back by a subsequent take-off conveyor compared to the nonwoven conveying, which exerts a straightening effect on these fibers.
- particularly advantageous design conditions result if a suction fan for the suction zone in the removal area is provided in the screening drum itself, because in this case advantageous flow conditions can be easily ensured.
- the subject matter of the invention is shown, for example, namely a device according to the invention for thermally strengthening a nonwoven fabric made from natural fibers mixed with binding fibers is shown in a schematic longitudinal section.
- a nonwoven fabric 2 made from a mixture of natural fibers, preferably hemp fibers, binding fibers and additives, for example flame retardants, is fed to a card drum 3, via which the fibers of the nonwoven fabric 2 are separated and through a chute 4 are applied to a vacuumed fleece drum 5 with the aid of a conveying air flow for fleece formation.
- the aerodynamically formed nonwoven fabric 1 is removed from the screening drum 5 by a circulating conveyor 6 and fed by means of a belt conveyor 7 to a continuous furnace 8, which is preceded by an infeed conveyor 9.
- This infeed conveyor 9 consists of two superimposed, revolving conveyor belts 10 and 11, the opposite conveyor strands 12 and 13 of which form a conveyor channel 14 converging in the direction of passage.
- this conveyor channel 14 that Pre-compressed fiber fleece 1 to be subjected to thermal consolidation between the conveyor belts 15 and 16 of the continuous furnace, with the aid of hot air blown through the conveyor belts 15 and 16, which heats the compressed fiber fleece 1 at least to the softening temperature of the binding fibers, so that after the cooling of the thermoplastic binding fibers a correspondingly solidified insulation mat is obtained.
- the conveyor belts 10 and 11 are driven at different conveying speeds. In connection with the increasing compression of the nonwoven fabric 1, these different conveying speeds result in a stretching effect on the nonwoven fabric 1, which results in the fibers of the nonwoven fabric 1 being reoriented in the direction of passage. This stretching of the nonwoven fabric 1 in the region of the conveying channel 14, which causes the nonwoven fibers to reorient, leads directly to an improvement in the thermal insulation properties of the insulating mat obtained from the nonwoven fabric 1 after thermal consolidation.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA1408/2001 | 2001-09-06 | ||
AT0140801A AT410552B (de) | 2001-09-06 | 2001-09-06 | Vorrichtung zum thermischen verfestigen eines faservlieses aus mit bindefasern gemischten naturfasern, insbesondere hanffasern |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003021026A1 true WO2003021026A1 (de) | 2003-03-13 |
Family
ID=3688200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2002/000256 WO2003021026A1 (de) | 2001-09-06 | 2002-09-04 | Vorrichtung zum thermischen verfestigen eines faservlieses aus mit bindefasern gemischten naturfasern, insbesondere hanffasern |
Country Status (2)
Country | Link |
---|---|
AT (1) | AT410552B (de) |
WO (1) | WO2003021026A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8273201B2 (en) | 2004-12-21 | 2012-09-25 | Kronotic Ag | Process for the production of a wood fiber insulating material board or mat and wood fiber insulating material boards or mats produced by this process |
EP2963198A1 (de) * | 2014-06-30 | 2016-01-06 | NAPORO Klima Dämmstoff GmbH | Verfahren zur Herstellung flammengeschützter Dämmstoffplatten |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB554104A (en) * | 1941-12-17 | 1943-06-21 | Owens Corning Fiberglass Corp | Method and apparatus for felting glass fibres |
US4632685A (en) * | 1983-07-07 | 1986-12-30 | Alain Debouzie | Apparatus for forming of felts which have an isotropic structure |
DE4432866C1 (de) * | 1994-09-15 | 1996-02-01 | Rockwool Mineralwolle | Verfahren zur Herstellung einer Mineralfaserlamellenbahn und Vorrichtung zur Durchführung des Verfahrens |
DE20021096U1 (de) * | 2000-12-13 | 2001-04-26 | Thueringisches Inst Textil | Naturfaserdämmvlies |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4756957A (en) * | 1979-10-15 | 1988-07-12 | Manville Corporation | Loose-fill insulation |
US4940502A (en) * | 1985-05-15 | 1990-07-10 | E. I. Du Pont De Nemours And Company | Relating to bonded non-woven polyester fiber structures |
-
2001
- 2001-09-06 AT AT0140801A patent/AT410552B/de not_active IP Right Cessation
-
2002
- 2002-09-04 WO PCT/AT2002/000256 patent/WO2003021026A1/de not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB554104A (en) * | 1941-12-17 | 1943-06-21 | Owens Corning Fiberglass Corp | Method and apparatus for felting glass fibres |
US4632685A (en) * | 1983-07-07 | 1986-12-30 | Alain Debouzie | Apparatus for forming of felts which have an isotropic structure |
DE4432866C1 (de) * | 1994-09-15 | 1996-02-01 | Rockwool Mineralwolle | Verfahren zur Herstellung einer Mineralfaserlamellenbahn und Vorrichtung zur Durchführung des Verfahrens |
DE20021096U1 (de) * | 2000-12-13 | 2001-04-26 | Thueringisches Inst Textil | Naturfaserdämmvlies |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8273201B2 (en) | 2004-12-21 | 2012-09-25 | Kronotic Ag | Process for the production of a wood fiber insulating material board or mat and wood fiber insulating material boards or mats produced by this process |
EP2963198A1 (de) * | 2014-06-30 | 2016-01-06 | NAPORO Klima Dämmstoff GmbH | Verfahren zur Herstellung flammengeschützter Dämmstoffplatten |
Also Published As
Publication number | Publication date |
---|---|
AT410552B (de) | 2003-06-25 |
ATA14082001A (de) | 2002-10-15 |
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