WO2006059752A1 - グラスウール成形体及びその製造方法 - Google Patents
グラスウール成形体及びその製造方法 Download PDFInfo
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- WO2006059752A1 WO2006059752A1 PCT/JP2005/022248 JP2005022248W WO2006059752A1 WO 2006059752 A1 WO2006059752 A1 WO 2006059752A1 JP 2005022248 W JP2005022248 W JP 2005022248W WO 2006059752 A1 WO2006059752 A1 WO 2006059752A1
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- Prior art keywords
- glass wool
- thickness
- aggregate
- glass
- compressed
- Prior art date
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Classifications
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- 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)
-
- 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
-
- 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
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- 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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
Definitions
- the present invention relates to a method for producing a glass wool molded body, and more particularly to a method for producing a glass wool molded body made of a short glass fiber.
- fiber mats are used for construction and industrial use (refrigerators, ovens, vehicles, ships, etc.) with heat insulation and sound absorption effects using fibers, especially in refrigerators and freezers. It is attracting attention as a material for vacuum insulation used. Such a material is required not only to have low thermal conductivity, but also to generate no gas, and to have heat resistance (when used as a sound absorbing material, it must have sound absorbing properties). From the viewpoint, the fiber itself is required to be easy to handle, such as having some flexibility and easy octanding.
- glass short fibers are the most preferable as such materials, rather than organic fibers or glass long fibers.
- the above-mentioned document discloses a technique in which a blanket made of short glass fibers is compressed and penetrated with a needle.
- the glass fiber mat produced by the method described in the above document has a problem in that the density is not uniform, and thus the heat insulating property and the sound absorbing property are not uniform.
- the present invention provides a glass wool molded body made of short glass fibers.
- An object of the present invention is to provide a method for producing a glass wool molded body having a uniform density without damaging 21 dollars.
- the short glass fibers are deposited to form a glass wool aggregate having the first thickness, and the glass wool aggregate is formed in a direction perpendicular to the thickness direction of the glass wool aggregate.
- the glass wool molded body is produced by stretching, reducing the thickness from the first thickness to the second thickness, and punching the glass wool aggregate for 21 dollars.
- a manufacturing method is provided.
- the glass wool aggregate is moved, the glass wool aggregate is stretched in the moving direction, and the thickness is reduced from the first thickness to the second thickness.
- the glass wool aggregate is needle punched while the glass wool aggregate is stretched in a direction perpendicular to the thickness direction of the glass wool aggregate.
- the short glass fibers are deposited to form a glass wool aggregate having the first thickness, and the glass wool aggregate is compressed in the thickness direction of the glass wool aggregate.
- a compression assembly having a thickness of three, stretching the compression assembly in a direction perpendicular to the thickness direction of the compression assembly, and reducing the thickness from the third thickness to the second thickness.
- the third thickness is 10 times or more of the first thickness.
- the compressed aggregate is moved, the compressed aggregate is stretched in the moving direction, and the thickness is reduced from the third thickness to the second thickness.
- the compression assembly is needle punched while the compression assembly is stretched in a direction perpendicular to the thickness direction of the compression assembly.
- a glassur molded body produced by these methods is provided.
- the Dallas wool aggregate is stretched in a direction orthogonal to the thickness direction of the glass wool aggregate, the orientation direction of the glass short fibers forming the glass wool aggregate is aligned, and It is possible to reduce the short glass fibers that have become agglomerated. Therefore, the needle is easily inserted, and the needle breaks. A lossless manufacturing method is provided.
- the short glass fibers are aligned and the number of short glass fibers is reduced, the density of the resulting glass wool molding is uniform, and therefore the glass wool with uniform heat insulation and sound absorption is obtained. Forms can be produced.
- the density of the glass wool molded body became uniform, the absorption of sound waves (especially medium to low frequencies, more specifically 300 to 1000 Hz) became uniform, and the sound absorption was improved when viewed as a whole glass wool molded body. Glass wool moldings can be produced.
- the orientation directions of the short glass fibers constituting the glass wool molded body are aligned, it is possible to produce a glass wool molded body having improved surface flatness. Furthermore, since the direction of the short glass fibers constituting the glass wool molded body is aligned, even if the glass wool molded body is compressed, the short glass fibers constituting the glass wool molded body move relatively. Therefore, it is possible to produce a glass wool molded body having a stable dimension and improved handleability. If the glass wool aggregate is stretched in the moving direction of the glass wool aggregate, the glass wool aggregate can be stretched along the flow operation, and the glass wool molded body can be produced efficiently. In addition, the desired glass wool molded product can be easily obtained by changing the degree of stretching.
- the thickness of the glass wool aggregate is reduced in two steps (the glass wool aggregate is a compression aggregate and further a glass wool molded body).
- the resilience strength (compressive strength) by the glass wool aggregate is reduced, so the burden on the needle punch device is reduced and the motive energy is saved.
- the resilience strength (compressive strength) due to the glass wool aggregate is small, it is possible to produce a glass wool molded body without breakage of the needle even if the glass wool aggregate has a high resilience strength. Further, a glass wool molded body having a high density can be obtained, and the surface finish (smoothness) is also improved.
- the third thickness is set to 1/10 or more of the first thickness, the short glass fiber will not be broken by rapid compression, and there will be no dust problem due to the breakage of the short glass fiber.
- the compressed aggregate If the compressed aggregate is stretched in the moving direction of the compressed aggregate, the compressed aggregate can be stretched along the flow operation, and a glass wool molded body can be produced efficiently. Also, by changing the degree of stretching, the desired Dallas wool molded product can be easily obtained.
- Molded bodies produced by these methods have a smooth surface, uniform density, heat insulation and sound absorption, and excellent handling properties.
- the fiber orientation is good (aligned), so it exhibits excellent heat insulation performance (low thermal conductivity).
- FIG. 1 is an overall process diagram schematically showing the entire process of the glass wool molded body manufacturing method according to the first embodiment of the present invention.
- FIG. 2 schematically shows the needle punching machine shown in FIG.
- FIG. 3 schematically shows the orientation state of the short glass fibers.
- (A) shows a state before stretching
- (b) shows a state after stretching.
- FIG. 4 schematically shows the orientation of the short glass fibers after needle punching.
- FIG. 5 is an overall process diagram schematically showing the entire process of the glass wool molded body manufacturing method according to the second embodiment of the present invention.
- FIG. 6 schematically shows another compression means in the second embodiment of the present invention.
- A is a pressure roll type
- (b) is a flat plate type
- (c) is The vacuum type is shown schematically.
- FIG. 7 schematically shows the take-up of the mouth before stretching according to a variant of the invention.
- glass wool aggregate production process Using known techniques, glass short fibers are deposited to produce glass wool aggregate 3 having a first thickness A (referred to as “glass wool aggregate production process”),
- a glass wool molded body 5 is manufactured by needle punching with a punching device 2 3 (referred to as “two dollar punching process”).
- a manufacturing apparatus used in the first embodiment of the present invention is schematically shown in FIG.
- the manufacturing apparatus used in the first embodiment of the present invention includes a glass melting furnace 1 1, a fiberizing apparatus 1 2, a cotton collection belt 1 3, a conveyor 1 5, a needle punch processing machine 1 6, and a conveyor 1 7. And more.
- a known glass melting furnace 11 can be used.
- the fiberizing device 1 2 is used to fiberize molten glass into short glass fibers, and a known one can be used.
- the molten glass is converted into short glass fibers by centrifugal force. Centrifugal fiberizers can be used.
- the cotton collection belt 1 3 is for collecting short glass fibers falling from the fiberizing device 1 2 and stacking them to form a glass wool aggregate 3, and a known one can be used. Is possible.
- the conveyors 15 and 17 are for moving the glass wool aggregate 3 and the glass wool molded body 5, and known ones can be used.
- FIG. 2 Details of the needle punching machine 16 are shown schematically in Fig. 2.
- the needle punching machine 16 includes a supply device 21, a punching device 23, and a discharge device 25.
- the supply device 21 includes a supply roller 1 2 2 A and a supply roller 1 2 2 B, and the glass wool aggregate 3 passes between the supply roller 2 2 A and the supply roller 2 2 B.
- Excretion The delivery device 25 includes a discharge roller 26 A and a discharge roller 26 B, and the glass wool molded body 5 passes between the discharge roller 26 A and the discharge outlet 26 B.
- FIG. 2 shows a pair of supply rollers and a pair of discharge rollers
- the present invention is not limited to a pair of rollers, and a plurality of pairs of rollers may be used.
- a roller is used in the supply device 21, but any means that can pinch and supply Dallas wool may be used.
- a known belt conveyor system, a set of fingers, or the like is used. It is also possible.
- a roller is used in the discharge device 25.
- other known means other than the roller can be used. is there.
- the supply rollers 1 2 2 A and 2 2 B are rotated at a rotational speed V I by a driving device (not shown).
- the discharge rollers 2 6 A and 2 6 B are also rotated at a rotational speed V 2 by a driving device (not shown).
- the rotation speed (V 2) of the discharge roller 1 is larger than the rotation speed (V 1) of the supply roller 1.
- the distance c between the supply rollers 2 2 A and 2 2 B can be adjusted by a distance adjusting device (not shown).
- the distance d between the discharge rollers 26 A and 26 B can also be adjusted by a distance adjusting device (not shown).
- the punching device 23 is provided with a plurality of needles 24.
- each 21 dollars is formed with a plurality of stab-like protrusions protruding toward the root direction of 21 dollars.
- the needle 24 is reciprocated up and down at high speed by a driving device (not shown). Insert these needles 24 into the glass wool assembly 3 in the thickness direction of the glass wool assembly 3 (upward and downward in FIGS. 1 and 2) and pull it out. By inserting and pulling out the dollar 2 4 to the glass wool aggregate 3 in this way, the short glass fibers 1 constituting the glass wool aggregate 3 are entangled with each other in the needle insertion portion 4 as shown in FIG.
- the short glass fibers 1 are entangled with each other by the needle body at the time of insertion and by the stab protrusion at the time of extraction. Therefore, without using a binder, The molded article 5 has shape retention.
- the number of needles 24 will be described later.
- the punching devices 23 are provided on both the upper and lower sides of the glass wool aggregate 3, but they may be arranged either above or below the glass wool aggregate 3.
- the glass wool molded body 5 is manufactured using the apparatus as described above.
- the molten glass in the glass melting furnace 11 is supplied to the fiberizing apparatus 12 and the short glass fiber 1 is manufactured by a known method.
- a binder for bonding the short glass fibers to the short glass fibers 1. Since the 21 dollar punch processing described later is performed, even if there is no binder, the short glass fibers are entangled with each other, and the glass wool molded body retains its shape. However, in the present invention, it is possible to apply a binder (adhesive), and by applying a binder, the shape retention of the glass wool molded product is improved.
- short glass fibers are cooled to improve the cotton quality, and in order to protect machines such as cotton collecting belts from high temperatures, glass short fibers are mixed with water (mixed with water repellent, etc.). May be applied).
- the average fiber diameter of the short glass fiber 1 is preferably 3 to 8 ⁇ m. If it is less than 3 ⁇ m, the fiber length becomes short, and even if needle punching is performed, the short fibers are not entangled with each other, and the glass wool molded product has poor shape retention. In addition, manufacturing costs are high. Beyond 8 m, the fiber is more likely to break due to the 21 dollar punching process, and the amount of dust increases. Gug Wool Assembly Manufacturing Process>
- the manufactured short glass fibers 1 fall on the cotton collecting belt 13 and are deposited to form a glass wool aggregate 3 having a first thickness A.
- the basis weight (weight per lm 2 ) of the glass wool aggregate 3 is, for example, 1500 g Z m 2 , but the present invention is not limited to this. In the subsequent pulling process, the basis weight decreases, so the basis weight of the glass wool aggregate is determined in consideration of the heat insulation effect and sound absorption effect of the glass wool molded product that is the final product, and the basis weight associated with the properties.
- Glass wool aggregate 3 is moved to needle punching machine 16 by conveyor 15.
- the moving speed is, for example, 5 m / min, but the moving speed of the present invention is not limited to this.
- the glass assembly 3 may be heated using hot air, steam, hot plate, etc., and the binder, water, etc. may be dried.
- the glass wool aggregate 3 is sent between the supply device 2 of the 21 dollar punching machine 16 and the supply port 2 of the roller 2 2 A and 2 2 B.
- the distance c between the supply rollers 2 2 A and 2 2 B is set smaller than the thickness A of the glass wool aggregate 3.
- the glass wool aggregate 3 passing through the supply device 21 at the speed V I is sent between the discharge outlets 2 6 A and 2 6 B of the discharge device 2 5.
- the rotation speed V 2 of the discharge rollers 26 A and 26 B is greater than the rotation speed V I of the supply rollers 22 A and 22 B.
- the speed of the downstream roller is larger than the speed of the upstream roller. Therefore, the glass wool aggregate is pulled (stretched) in the moving direction between the supply device 21 and the discharge device 25.
- the glass wool aggregate Since the glass wool aggregate is stretched, the orientation directions of the short glass fibers constituting the glass wool aggregate are aligned. For this reason, even if the density of the glass wool aggregate is high, the needle 24 can be easily inserted into the glass wool aggregate. Therefore, the needle is not damaged in the needle punching process of the present invention.
- the glass wool aggregate 3 is obtained by depositing the short glass fibers 1 falling from the fiberizing apparatus 1 2, and the fibers rise, and the fiber wool aggregate 3 is gathered into the glass wool aggregate 3 after the collection due to fiber grouping. Will have massive fibers and non-uniform density.
- the orientation direction of the short glass fibers is random as shown in Fig. 3 (a). Therefore, if the glass wool aggregate 3 is pulled in a direction perpendicular to the thickness direction of the glass wool aggregate 3, as shown in FIG.
- the orientation directions of the short fibers are aligned, and as a result, the density of the glass wool aggregate is uniform. For this reason, the density of the glass wool molded product produced by the method of the present invention becomes uniform, and the heat insulating property and sound absorbing property of the glass wool molded product become uniform.
- the glass wool aggregate is stretched, it is possible to reduce the short glass fibers that have become agglomerated, and from this point, the processing becomes easy. If the short glass fibers are in a lump shape, when the needle 24 is inserted, the needle 24 collides with the lump and breaks.
- the repulsive force of the short glass fibers acts on the punching device 23 when performing needle punching. Without the supply roller 1 2 2 A, 2 2 B and the discharge roller 1 2 6 A, 2 6 B, the repulsive force acts on the punching device 2 3.
- the repulsive force of the short glass fibers is as follows: punching device 2 3, supply device 2 1, discharge device Accordingly, the repulsive force against the needle when the needle is inserted is reduced. Therefore, processing becomes easy and needle damage is reduced.
- the speed V 2 of the discharge rollers 2 6 A and 2 6 B is set to 1.0 5 to 1.5 times the speed VI of the supply rollers 2 2 A and 2 2 B, preferably 1.0 5 to: L. 3 5 times. If it exceeds 1.50 times, the degree of stretching will be too large, and the glass wool aggregate 3 will be cracked or torn. If it is less than 1.05, there is no effect due to the above-mentioned enlargement. Within the range of 1.05 to 1.50, the speeds V I and V 2 are appropriately selected according to the weight of the glass wool aggregate, the cotton quality of the fiber, the number of 21 dollars, etc.
- the thickness of the glass wool aggregate 3 (before needle punching) is adjusted, and the density is adjusted.
- the distance c between the supply rollers 2 2 A and 2 2 B is set to be smaller than the thickness A of the glass wool aggregate 3. In order to supply the glass wool aggregate 3 stably and continuously to the supply device 21, it is necessary that c ⁇ A.
- the distance d between the discharge roller 2 6 A and the output roller 2 6 B is the distance c. It is preferably about 1.0 to 1.5 times. As will be described later, the glass wool molded body that has passed between the discharge rollers is considered to be thick due to the restoring force of the short glass fibers.
- the glass wool aggregate is stretched in the moving direction, but the glass wool aggregate may be stretched in the width direction of the glass wool aggregate (the direction from the front to the back of the drawing).
- the glass wool aggregate may be stretched in a direction orthogonal to the thickness direction of the glass wool aggregate 3. In this way, by stretching in the direction perpendicular to the thickness direction, the above-described effects can be obtained.
- the glass wool aggregate is stretched in the width direction, it is necessary to separately provide a stretching means. Therefore, it is preferable to stretch the glass wool aggregate in the moving direction.
- the needle 24 is reciprocated in the vertical direction at a high speed, thereby inserting the needle 24 into the glass wool assembly.
- the double dollar insertion portion 4 (FIG. 4)
- the glass short fibers 1 constituting the glass wool aggregate 3 are entangled with each other.
- the number of needles is selected from the range of 50 to 40 Zcm 2 depending on the weight, thickness, fiber cotton quality, and the like of the glass wool aggregate 3, and is preferably 5 to 25 / cm 2 . If the length exceeds 40 cm 2 , the entanglement of the short glass fibers 1 will be good, but the thermal conductivity of the glass wool molded body will increase due to the increase in the needle insertion part 4, and the heat insulation will be poor. End up. If it is less than 5 Zcm 2 , the short glass fiber 1 is less entangled, the shape retention of the glass wool molded product becomes worse, and the thickness of the Dallas wool molded product becomes larger. Becomes low.
- the thermal conductivity of the glass wool molded product will increase.
- the number of needles affects the fiber orientation of the glass wool molded product, the entanglement of the fibers (shape retention), and the number of needle insertion parts (number of through-holes). It is obtained by the balance of elements.
- the needle punching is performed between the supply device 21 and the discharge device 25, but the needle punching may be performed after the discharge device 25. Good. In other words, needle punching may be performed after the drawing process.
- the glass wool molded body 5 is manufactured. Note that the glass wool molded body that has passed through the discharge device 25 becomes somewhat thicker than the thickness immediately after passing due to the restoring force of the short glass fibers, and the density also decreases accordingly. Therefore, if a glass wool molded body having a desired thickness and density is to be obtained, such restoration should be considered.
- the glass wool molded body is cut into a desired size to obtain a plate-like product or a roll product. If necessary, apply an organic or inorganic jacket material (film) or an organic or inorganic adhesive and cure to coat the glass wool molded body.
- the glass wool molded body 5 produced as described above is packed by a known method.
- 20 glass wool molded bodies having a density of 60 kg // m 3 , a thickness of 20 mm, a width of 500 mm, and a length of 1500 mm are laminated in the thickness direction to form a laminate.
- place reinforcing members for example, a synthetic resin plate with a thickness of 5 mm
- Such a laminate is put into, for example, a polyethylene bag (for example, a thickness of 25 ⁇ m), deaerated and compressed by a vacuum device, and a temporary package is manufactured.
- the temporary packaging body manufactured in this way is inserted into a cylindrical polyethylene film (for example, 100 m thick) and further deaerated to form a packaging body. Cylindrical polyethylene film is effective in preventing dimensions from being restored after compression packaging.
- the thickness of the glass wool aggregate 3 is compressed from the first thickness A to the third thickness B, thereby compressing the aggregate.
- 10 4 is manufactured (referred to as a “compression process”), and the compressed aggregate 10 4 having the third thickness B is defined as a glass wool molded body 5 having the second thickness C.
- the glass wool aggregate 3 having the first thickness A is compressed in the thickness direction of the glass wool aggregate, and the compressed aggregate 1 having the third thickness B 1 0 4 age,
- the glass wool aggregate 3 manufactured by the same method as in the first embodiment is supplied to the compression device 1 1 1 by the conveyor 15.
- the compression device 1 1 1 has a conveyor 1 1 2 A and a conveyor 1 1 2 B, and the glass wool aggregate 3 is composed of the conveyor 1 1 2 A and the conveyor 1 1 2 B. Then, these conveyors compress the glass wool aggregate 3 in the thickness direction to form a compressed aggregate 104.
- the compression device 1 1 1 compresses the glass wool aggregate by a conveyor, but the present invention is not limited to this, and a pressure roll that compresses using a plurality of rollers.
- a known compression means such as a formula (Fig. 6 (a)), a flat plate press type that compresses using a flat plate (Fig. 6 (b)), a vacuum type that compresses by reducing pressure (Fig. 6 (c)) Is possible.
- drying of the binder, water, etc. by heating the glass wool aggregate 3 using hot air, steam, hot plate or the like as described above may be performed in the compression device 11.
- the thickness 8 of the compressed aggregate 10 4 becomes smaller than the thickness A of the glass wool aggregate 3.
- the largest cause of needle breakage is the repulsive force of the glass wool aggregate, and the repulsive force of the glass wool aggregate is related to the density and thickness of the glass wool aggregate.
- the thickness of the glass wool aggregate 3 is reduced by the compression device 1 1 1.
- the thickness B of the compressed aggregate 10 4 is not more than half of the thickness A of the glass veil aggregate 3.
- the thickness B of the compressed aggregate 10 4 is at least 1/10 of the thickness A of the glass wool aggregate 3. This is because, when the glass wool aggregate 3 is rapidly compressed, the short glass fibers may be destroyed because the short glass fibers are fragile and the rebound strength (compressive strength) is large.
- the thickness B of the compressed aggregate 10 4 and the thickness A of the glass wool aggregate 3 are preferably 1/1 O A ⁇ B ⁇ 1 Z 2 A.
- the density of the compressed aggregate 10 4 compressed in this way is large. However, even if the density is large, the orientation process of the short glass fibers constituting the compressed aggregate 104 is aligned by the drawing process, so that the needle is not damaged.
- the compressed assembly 10 4 thus obtained is supplied to the supply device 21 of the needle punching machine 16 using the conveyor 1 15.
- the interval c between the supply rollers 2 2 A and 2 2 B is set smaller than the thickness B of the compression assembly 1 0 4 .
- the glass wool aggregate 3 is directly subjected to the stretching process and the needle punching process, but after the glass wool aggregate 3 is manufactured, it is temporarily stored and then stretched. You may attach to a process and a needle punch processing process.
- the glass wool aggregate 3 is manufactured and wound into a roll product by a roll winder (Fig. 7), and the glass wool aggregate 3 is pulled out from the roll product and subjected to a drawing process and a needle punching process. Also good.
- the glass wool aggregate 3 has not yet been subjected to needle punching, and therefore the shape retention of the glass wool aggregate 3 is insufficient, but it can be made into a roll.
- the glass wool assembly 3 is subjected to a drawing process and a 21 dollar punching process.
- an organic or inorganic jacket material film
- it can be subjected to a drawing process and a needle punching process.
- short glass fibers 1 with an average fiber diameter of 5.5 m are manufactured, with a basis weight of 1500 gZm 2 , a thickness A of 300 mm, and a density of 5 kg Zm 3 .
- the glass wool aggregate 3 was collected on the cotton collection belt 13. This glass wool assembly 3 was supplied to the compression device 111 by the conveyor 15 at a speed of 5 m / min.
- the glass wool aggregate 3 was compressed by the compression apparatus 111 to produce a compressed aggregate 104 having a thickness B of 100 mm and a density of 15 kgZm 3 .
- the basis weight of the compressed aggregate 104 is the same as the basis weight of the glass wool aggregate 3 and is 1500 g / m 2 .
- the compression assembly 104 was moved to the supply device 21 in which the distance c between the supply rollers 22A and 22B was 9.5 mm.
- the thickness of the glass wool aggregate immediately after passing the feeder 21 was 9.5 mm, and the density was 158 kg / m 3 .
- the speed VI of the supply port 21 A and 22 B of the supply device 21 was 5 m / min, and the speed V 2 of the discharge rollers 26 A and 26 B of the discharge device 25 was 6.5 m / min.
- the needles 24 of the punching device 23 were No. 3 needles made by Grotz-Beckert, and 18 needles per 1 cm 2 .
- the vertical speed of the needle 24 was 800 reciprocations per minute (800 rpm).
- the distance d between the discharge rollers 26 A and 26 B was 12 mm.
- the glass wool aggregate 3 was stretched and needle punched to produce a glass wool molded body 5.
- Discharge roller 26 A, 26B speed V2 5mZ min (ie, supply roller speed A glass wool molded product was produced in the same manner as in Example 1 except that the same as in Example VI.
- the thermal conductivity of the glass wool molded body was improved as compared with the comparative example without the stretching process.
- a short glass fiber 1 having an average fiber diameter of 5. u is produced using a known glass melting furnace 11 and a fiberizing apparatus 12 , and has a basis weight of 2000 gZm 2 , a thickness A of 300 mm, and a density of 6.6.
- Cotton wool aggregate 3 of kg / m 3 was collected on a cotton collection belt 13. The glass wool aggregate 3 was supplied to the compression device 1 1 1 by the conveyor 15 at a speed of 5 m / min.
- the glass wool aggregate 3 was compressed by a compression apparatus 1 1 1 to produce a compressed aggregate 1 04 having a thickness B of 100 mm and a density of 2 O kgZm 3 .
- the basis weight of the compressed aggregate 10 4 is the same as the basis weight of the glass wool aggregate 3 and is 2000 g / m 2 .
- the compressed assembly 10 4 was moved to the supply device 2 1 having a distance c between the supply rollers 2 2 A and 2 2 B of 9.5 mm.
- the thickness of the glass wool aggregate immediately after passing the feeder 21 was 9.5 mm, and the density was 210.5 kgZm 3 .
- Supply device 2 1 supply port 2 2 A, 2 2 B speed VI 5 mZ min, discharge device 2 5 discharge rollers 2 6 A, 26 B speed V 2 6.5 m / min did.
- the needles 2 and 4 of the punching device 2 and 3 were made of Gross-Beckert Co., Ltd. $ 21 and 32, and the number of needles was set to 18 per 1 cm 2 .
- the vertical speed of the needle 24 was 800 reciprocations per minute (800 rpm).
- the distance d between the discharge rollers 1 2 6 A and 2 6 B was 12 mm.
- the glass wool aggregate 3 was stretched and needle punched to produce a glass wool molded body 5.
- the glass wool compact immediately after the discharge device 25 had a basis weight reduced to 1600 g Zm 2 , a thickness of 12 mm (same as the distance d), and a density of 133.3 kgZm 3 . Thereafter, due to the restoring force of the short glass fibers, the glass wool molded body 5 had a thickness of 25 mm and a density of 64 kg / m 3 (the basis weight remained unchanged).
- the sound absorptivity of the manufactured product was measured by the same method as in Example 2. The results are shown in Table 2.
- the sound absorption rate in Table 2 shows how much the incident sound wave attenuates before passing through the specimen.
- “Sound Absorption Rate 0.59” is the sound wave due to passing through the specimen. Is attenuated by 59%. Therefore, the higher the sound absorption rate, the higher the sound absorption.
- the sound absorption coefficient of the glass wool molded article of Example 2 was compared with the sound absorption coefficient of the glass wool molded article of Comparative Example 2, the sound absorption coefficient of Example 2 was excellent at 315 Hz to 1000 Hz, and was produced by the method of the present invention. It was found that the sound absorptivity (especially medium to low sound) of the glass wool molding was excellent.
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- Nonwoven Fabrics (AREA)
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012012756A (ja) * | 2010-06-03 | 2012-01-19 | Central Glass Co Ltd | ニードルパンチ加工装置 |
US20140364031A1 (en) * | 2011-09-30 | 2014-12-11 | Owens Corning Intellectual Capital, Llc | Method of forming a web from fibrous materials |
JP2016512578A (ja) * | 2013-01-11 | 2016-04-28 | サン−ゴバン イゾベ | ミネラルウール系断熱物品及びその物品の製造方法 |
JP2016518534A (ja) * | 2013-03-15 | 2016-06-23 | オウェンス コーニング インテレクチュアル キャピタル リミテッド ライアビリティ カンパニー | 繊維状材料からウェブを形成する方法 |
JPWO2015159646A1 (ja) * | 2014-04-17 | 2017-04-13 | 三菱電機株式会社 | 真空断熱材、及びそれを備えた保温体 |
JP2019194386A (ja) * | 2011-09-30 | 2019-11-07 | Owens Corning Intellectual Capital Llc | 繊維状材料からウェブを形成する方法 |
JP7345004B2 (ja) | 2011-09-30 | 2023-09-14 | オウェンス コーニング インテレクチュアル キャピタル リミテッド ライアビリティ カンパニー | 繊維状材料からウェブを形成する方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102555019A (zh) * | 2012-01-11 | 2012-07-11 | 山东益邦能源科技有限公司 | 一种棉板压缩成型装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06509849A (ja) * | 1992-01-24 | 1994-11-02 | イソベール・サン−ゴバン | 処理助剤、ミネラルウールニードルフェルト、縮れミネラルウール製品およびその製造方法 |
-
2005
- 2005-11-29 JP JP2006546662A patent/JP4778443B2/ja not_active Expired - Fee Related
- 2005-11-29 WO PCT/JP2005/022248 patent/WO2006059752A1/ja active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06509849A (ja) * | 1992-01-24 | 1994-11-02 | イソベール・サン−ゴバン | 処理助剤、ミネラルウールニードルフェルト、縮れミネラルウール製品およびその製造方法 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012012756A (ja) * | 2010-06-03 | 2012-01-19 | Central Glass Co Ltd | ニードルパンチ加工装置 |
US20140364031A1 (en) * | 2011-09-30 | 2014-12-11 | Owens Corning Intellectual Capital, Llc | Method of forming a web from fibrous materials |
JP2019194386A (ja) * | 2011-09-30 | 2019-11-07 | Owens Corning Intellectual Capital Llc | 繊維状材料からウェブを形成する方法 |
JP7345004B2 (ja) | 2011-09-30 | 2023-09-14 | オウェンス コーニング インテレクチュアル キャピタル リミテッド ライアビリティ カンパニー | 繊維状材料からウェブを形成する方法 |
US11939255B2 (en) | 2011-09-30 | 2024-03-26 | Owens Corning Intellectual Capital, Llc | Method of forming a web from fibrous material |
JP2016512578A (ja) * | 2013-01-11 | 2016-04-28 | サン−ゴバン イゾベ | ミネラルウール系断熱物品及びその物品の製造方法 |
US10344410B2 (en) | 2013-01-11 | 2019-07-09 | Saint-Gobain Isover | Thermal insulation product based on mineral wool and method of fabrication of the product |
US11035062B2 (en) | 2013-01-11 | 2021-06-15 | Saint-Gobain Isover | Thermal insulation product based on mineral wool and method of fabrication of the product |
JP2016518534A (ja) * | 2013-03-15 | 2016-06-23 | オウェンス コーニング インテレクチュアル キャピタル リミテッド ライアビリティ カンパニー | 繊維状材料からウェブを形成する方法 |
JPWO2015159646A1 (ja) * | 2014-04-17 | 2017-04-13 | 三菱電機株式会社 | 真空断熱材、及びそれを備えた保温体 |
EP3133330A4 (en) * | 2014-04-17 | 2017-12-13 | Mitsubishi Electric Corporation | Vacuum heat-insulating material and heat-retaining body with same |
Also Published As
Publication number | Publication date |
---|---|
JP4778443B2 (ja) | 2011-09-21 |
JPWO2006059752A1 (ja) | 2008-06-05 |
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