TW201033140A - Method for producing pulling rolls for use in manufacturing sheet glass - Google Patents

Abstract

A method for making pulling roll for glass manufacture is disclosed. The method includes fabricating a pulling roll section to a target bulk density, wherein the resulting pulling roll section also has a targeted Shore D hardness.

Description

201033140 VIII. Inventions: This application claims priority to US Provisional Application No. 61/141,442, entitled "Method for Producing Pulling Rolls For Use In Manufacturing Sheet Glass", December 30, 2008. rights and interests. [Technical Field to Which the Invention Is Applicable] φ This disclosure relates to the production of flat glass. More specifically, the present disclosure relates to a method of making a draw cylinder for making flat glass (e.g., 'overflow down-dip fusion process'). [Prior Art] A draw cylinder is used to make a flat glass to apply tension to a glass ribbon. The flat sheets are formed from the glass ribbon and thus the strands control the nominal flat thickness. For example, in an overflow down-dip fusion process (see pp Dockerty, U.S. Patent Nos. 3,338,696 and 3,682,6,9), the draw cylinder can be placed on top of the molten tube or downstream of the root. And to adjust the rate at which the formed glass ribbon exits the tube, and thus the nominal thickness of the finished panel. Successful pull rollers can meet several conflict criteria. First, the drum should be able to withstand the high temperatures associated with the newly formed glass for a significant period of time. - The longer the drum can last in this environment, the more the roller replacement will reduce the amount of finished glass manufactured by a given machine, 201033140 and thus increase the final cost of the glass. The second 'the drum should be capable of generating sufficient pulling force to control the thickness of the glass. In order not to damage the central portion of the belt that will become available glass, the drum can contact the belt only over a limited area of the belt edge. Therefore, only this area can be used to generate the pulling force. However, the force applied to the glass should not be too large as this may result in surface damage that can propagate into the available central portion of the belt. Therefore, the drum should strike a balance between applying too little force to the glass and applying too much force. Third, the high-density fiberboard (miUb〇ard) material used in the construction of the draw rolls should be sufficiently rigid to withstand process damage due to, for example, the production of cullet between extended lengths of time. Fourth, the draw cylinder should not release excess particles because the particles can adhere to the glass and form a surface defect called an impurity region (〇nclusi〇n). For glass that will be used in a desired application (for example, a substrate for a flat panel display), the impurity regions must be kept to a very low level, and the impurity regions will typically represent defective regions of the finished product (eg, one or more Defective pixel). Due to the thermal environment in which the draw rolls operate, it is a difficult challenge to provide a material that can apply sufficient pull force to the glass ribbon without releasing particles at high temperatures. The draw cylinder is preferably designed to be attached to the outer edge of the ribbon, and is only in contact with the strip in the region just inside the thickened bead on the edge of the strip. The preferred construction of the drum is a disc of a heat resistant material (e.g., a high density fiberboard) that is mounted on a drive shaft. An example of such a construction can be found in Moore, U.S. Patent No. 4,330,010, issued to Asaumi et al. It is found in U.S. Patent No. 4, 533, 581, the disclosure of which is incorporated herein by reference in its entirety in its entirety in its entirety in the the the the the the the the the the Long-term competition for high temperature service life, controlled force application, hardness and low pollution. Therefore, there is a need in the art to obtain a draw cylinder that achieves a higher degree than existing pull cylinders. SUMMARY OF THE INVENTION The present disclosure relates to a method of manufacturing a draw cylinder for glass fabrication. In one aspect, the present disclosure provides a method for making a A method of drawing a drum zone of a length and diameter, the method comprising the steps of: selecting a set of heat resistant disks having a suitable outer diameter and combined weight such that the set of disks is set to fill the given length And at a given diameter, the set of disks reaches a bulk density of from about 0.9 g/cm3 to about 1.2 g/cm3; the set of heat resistant disks are assembled to a shaft; at least one first and one second assembly are attached To the shaft, and positioning the first and second fittings to apply a coaxial compressive force to the set of discs; and compressing the set of discs to the given length such that the draw cylinder zone At least a portion is adapted to contact a glass ribbon having a Shore D hardness of from about 30 to about 60 at about 25 ° C. 5 201033140 Other aspects of the disclosure will be in the subsequent embodiments and any patent claims. The invention will be described in part, and in part will be derived from the embodiments, or may be learned by the implementation of the disclosed exemplary embodiments. The advantages described below will be realized by the elements and combinations particularly pointed out in the scope of the appended claims. And The above general description and the following detailed description are intended to be illustrative and not restrictive. It is to be understood that the foregoing description of the subject matter and/or It is, of course, to be understood that the terminology used herein is for the purpose of describing the particular embodiments and is not intended to be limiting. The disclosed subject matter can be used in the disclosed methods and compositions. The methods and compositions are used together to prepare the disclosed methods and compositions or materials, compounds, compositions and components thereof. These and other materials are disclosed herein, and it should be understood that when a combination, a subset, an interaction, a group, etc. of such materials are disclosed, each individual and collective combination and the specific reference of the arrangement of such compounds may be It is not explicitly disclosed, but each specific reference is specifically covered and described herein. The following description is provided as an illustration of the teachings of the present invention in the presently known embodiment of the present invention 201033140, which will be recognized and appreciated by the present invention. Many modifications are made to the various aspects of the embodiments while still obtaining the beneficial results of the present invention. It will also be appreciated that some of the desired benefits of the present invention may be obtained by selecting some of the features of the present invention without the use of other features. Accordingly, those skilled in the art will recognize that many modifications and adaptations of the present invention are possible, and in some cases may be desirable, and are part of the present disclosure. Accordingly, the description is to be construed as illustrative and not limiting. As used herein, the singular forms "a", "a" Thus, for example, unless explicitly indicated otherwise in the context, the <RTI ID=0.0> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> includes a plurality of aspects having two or more of the same density of fiberboard. Ranges may be expressed herein as "approximately" from a particular value and/or to "about another particular value. When expressing the range, the sample includes a particular value and/or to another particular value. In the case of the master, the use of the first word "when the value is expressed as an approximation, it is understood that the derivation of the particular value forms another aspect. The endpoints of each of the ranges in the range are relative to Another: the endpoint 'is still independent of the other - the endpoint, which means significant. In the patent, the composition of the composition or the article in the scope of the patent and any other heart test 'represents the composition or substance The weight relationship expressed by parts by weight between the other components of the technique 7. Therefore, in the compound containing the component of 2 weights and 5 parts by weight of the component Y of 201033140, X and γ are 2:5. The weight ratio is present, and regardless of whether the compound contains additional components, both X and γ are present in this weight ratio. As used herein, unless otherwise stated to the contrary, the "wt. %" or "weight" of the component. Percentage is based on the total weight of the composition comprising the component . As used herein, &quot;compressibility&quot; refers to the relative volume change of a material that responds to a applied pressure 10. For example, the compressibility of the draw cylinder refers to a change in the thickness of the assembled heat resistant disc or a change in the length of the assembled draw cylinder after application of a compressive axial force. As used herein, &quot;return&quot; refers to the ability to expand a collapsed material after removal of an applied pressure. For example, the return of the draw cylinder refers to the expansion of the thickness of the high density fiberboard member after removal of an axial compression force or after elongation of the draw cylinder shaft by, for example, thermal expansion. As briefly introduced above, an exemplary embodiment provides an improved method of making, for example, G, a draw cylinder that can be used to make flat glass. In various aspects described in detail below, an exemplary embodiment includes a prefabrication. The method of drawing the drum with a bulk density. In various aspects, the draw rolls made by the methods disclosed herein are capable of expanded operation and improved glass quality in a glass making system. In other aspects, the draw rolls made by the methods disclosed herein achieve a higher degree of efficiency and consistency than conventional draw rolls. Heat-Resistant Discs The draw cylinders produced by the methods of the present disclosure comprise a plurality of heat-resistant disks of 8 201033140. The particular shape, size and composition of any one or more of the plurality of heat resistant disks may vary depending on, for example, the intended application and working conditions of (4) (iv).

❹ In various aspects, the heat resistant disk may comprise a planar material having an outer perimeter and a central aperture. The size and shape of the heat resistant disk can be any size and shape suitable for the draw roller. In the _ aspect, any one or more of the heat-resistant disks are circular so that the disk on a pulling cylinder will have a constant diameter when it is wound around a turn. In this case, the diameter may not be the same for different draw rolls for different applications. In other aspects, the shape and/or outer perimeter of any one or more of the heat resistant disks can be varied along any particular draw roll such that the outer surface of the draw roll is undulating. A heat resistant disc may also have a central opening, for example, having an opening through which the shaft can be inserted. This hole allows a plurality of heat resistant disks to be mounted on the shaft in a face-to-face manner. The specific size and shape of the hole may vary depending on, for example, the configuration of the axis. In one aspect, the aperture of a heat resistant disk can match or substantially match the cross section of the shaft on which the heat resistant disk will be mounted. In another aspect, the aperture of a heat resistant disc may be different from the cross section of the shaft on which the disc will be mounted. In various aspects, the holes of the heat resistant disk may be, for example, circular, square, pentagonal, hexagonal, diamond or elliptical. A heat resistant disc having matching or generally matching holes can be used to prevent sliding of the disc, for example, rotation of the disc about the shaft during operation. In various aspects, the outer surface of each heat resistant disk may form a portion of the outer surface of the draw cylinder. At least a portion of the outer surface of the draw cylinder is adapted to contact the glass plate 9 201033140 The thickness of the heat resistant disk may vary, may be any thickness suitable for pulling the w roll, and the disclosure is not intended to be limited to any particular thickness of the heat resistant disk . In various aspects, the heat resistant disc may have a thickness of from about 3 mm to about 1 mm, for example, may be about 3 mrn, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 1 〇mm. In other aspects, the heat resistant disk can have a thickness of less than about 3 mm or greater than about 1 〇 mm. The composition of the heat resistant disc can be any combination of φ suitable for the draw cylinder. In one aspect, the heat resistant disk can comprise a high density fiberboard material. High density fiberboard materials are commonly used as thermal insulation materials in a variety of industries, including glass making. High density fiberboard articles are typically manufactured by producing a slurry of the desired component, using a rotating screening cylinder to effect absorption and dewatering of the components, and transferring the dehydrated components to a synthetic carpet gasket. And then transferred to an accumulator drum (on which the layers of the slurry are accumulated on each other to a desired thickness). These reservoir layers can be cut, removed and formed into a flat sheet of the desired size for subsequent use. After formation and during formation, the high density fiberboard slab can be compressed by a roller to impart a uniform thickness. The resulting high density fiberboard panel can then be heated to remove residual moisture. Various compositions and methods for high density fiberboard fabrication are described in U.S. Patent Nos. i 594 4i7, 1'678'345, 3,334, 1 、, WO; and 5,989'17G. Those skilled in the art can readily determine the appropriate process conditions for making high Φ fiberboard articles. ° In another case, the heat-resistant disc may contain a sulphate and a clay. In another aspect, the heat resistant disc may comprise a refractory ceramic fiber such as Mingshi Xi 10 201033140 acid refractory fiber, niobate, mica and clay (e.g., kaolin clay). In still another aspect, the heat-resistant disk may comprise a commercially available high-density fiber sheet material such as Nichias SD-115 (available from Nichias Corporation of Tokyo). In one aspect, the heat resistant disk and/or the material from which the heat resistant disk is formed or cut may further comprise a functional component. In one aspect, the functional component comprises a cellulosic material, a starch material, a silicone or a mixture thereof. This group of injuries can be used for the formation of 咼 density fiberboard articles. A functional component can be burned or decomposed during heating or during use of the high density fiberboard article at typical draw cylinder operating temperatures. In one aspect, the functional component can be a processing aid (e.g., processed wood pulp cellulose fibers). The functional component can also be a binder, for example, cationic potato starch (e.g., 'Empresol® from American Ke y Products, lnc from Kearney, New Jersey, USA), or the functional component can be a silicone such as ' An anthraquinone gel solution (for example, LUDOX®-Nalco 1140, available from Nalco Chemical Co., Naperviile, η © lm〇1S, USA). In another aspect, the heat resistant disk is substantially free of asbestos, unfibrillated material, and small crystalline cerium particles. In still another aspect, the heat resistant disk can comprise less than about 0.8 weight percent, less than about 3% by weight titanium dioxide, or even no titanium dioxide. In one aspect, the heat resistant disc can be fired and/or the material from which one or more heat resistant discs are cut prior to assembly to form the draw rolls, such that when exposed to the temperature at which the rolls are exposed At the time, the composition or size change of 11 201033140 is generally not presented. For example, the heat resistant disk may be heated from a temperature of about 650 ° C to a temperature in a firing step, preferably from a temperature of about 760 ° C, to a temperature of about 1, 〇〇〇t, and maintained. At least two hours of the cycle. Subsequently, the heat resistant disks can be cooled to ambient temperature and assembled to form a draw cylinder. The functional component (e.g., cellulose) present in the high density fibrous sheet material can be burned by heating in this firing step. Alternatively, the draw cylinder can be used without a firing step prior to assembly. #High-density fiber sheets forming the draw rolls The flammable functional components contain the compressive forces used to assemble the draw rolls and may need to be adjusted to compensate for the burned functional components. Of course, other firing times and temperatures can also be used to implement the exemplary embodiments as long as the composition of the finished draw cylinder provided is stable at the operating temperature of the drum. It can be any hardness suitable for pulling the drum. It should be noted that the hardness of the heat resistant disk may vary depending, for example, on the composition of the disk and the thermal history. The average hardness of the draw rolls containing heat resistant discs can also vary. In one aspect, the draw rolls of the draw rolls comprising the heat-resistant disks produced by the methods disclosed herein have an average Shore D hardness of from 25 to about 60, for example, about 3 inches. 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59 or 60; in the range from about 40 to about 6 ,, for example, about 40, 42 , 44, 46, 48, 50, 52, 54, 56, 58 or 6 〇. In other aspects, the draw rolls of the draw rolls made by the methods disclosed herein and comprising heat resistant disks may have an average Shore D hardness at 25 ° C of less than about 3 〇 12 201033140 or greater than about 60 ′ and the present disclosure The case is not intended to be limited to any particular hardness of the draw cylinder and/or the heat resistant disc. In various aspects, the portion of the draw cylinder adapted to contact the glass ribbon may have a Shore 1 hardness of from about 3 〇 to about 60 at 25 ° C or have a hardness of from about 4 〇 to about 6 〇. 〇 hardness. The nature of any one or more of the heat resistant disks in various aspects may vary depending on whether the particular heat resistant disk is intended to contact the glass ribbon during operation. In one aspect, all of the heat resistant disks comprise substantially the same composition and exhibit substantially the same properties. In another aspect, the heat resistant disks that are positioned such that they contact the glass ribbon during operation may be different than the heat resistant disks that are not clamped to contact the glass ribbon. The composition exhibits different properties. Shafts and Assemblies The shaft of the draw rolls made by the methods of the present disclosure may comprise any of the geometries and compositions suitable for use in the draw rolls. In one aspect, the shaft contains a material H material that resists during glass production.

The thermal condition of i. In another aspect, the shaft is designed such that no or substantially no depression occurs during heating and operation. In one aspect, the shaft or a portion thereof may be coated with a heat resistant material. , Example 2 CERAK M_720 black ceramic coating (by B (10), 〇hi〇, the distribution of Cetek Limited.) The drawing cylinder made by the methods not disclosed herein may also include t or more along the axis A fitting. The fitting may include a collar, a locking ring 'as a snap ring or other means capable of fixing _ or a plurality of heat-resistant disks to the appropriate position on the shaft. A plurality of heat-resistant disks capable of applying a shaft 13 201033140 to a plurality of heat-resistant disks that are agglomerated on a shaft can be used in a state in which the collar can be closed by a buckle located in a groove on the shaft Locked in place on the shaft. Other mechanisms known in the art can be used to attach the collar to the shaft in other aspects. In various aspects... each of the assemblies can be placed On the opposite side of the shaft, where a plurality of heat resistant discs are attached to the In - order aspect,

Each of the pair of assemblies can be moved. In another aspect, one of the pair of members may be movable and the other may be permanently attached to the shaft and/or may be integrally formed as part of the shaft. One or more regions of the heat resistant disc can be positioned along the axis depending on the desired configuration of the given draw cylinder. In various aspects, one, two, three or more individual regions of the heat resistant disk may be positioned along the axis, wherein each region of the regions includes at least two assemblies, the at least two packages The fitting can apply an axial compression force to the heat resistant disc disposed between the fittings. A pull roller shaft is inserted into a bearing or bearing surface that is positioned on one end of the pumping. The composition of the shaft and/or any assembly attached to the shaft may vary depending on the intended application and operating conditions. In one aspect, the shaft can comprise a cast stainless steel alloy, such as cast Hp 45 alloy, 330 stainless steel, or a combination thereof. In another aspect, the shaft or a portion of the shaft may comprise a different composition than the assembly or other portion of the same shaft. In a particular exemplary aspect, the shaft can comprise a cast Hp45 alloy, and the bearing attached to the shaft can comprise 33 inch stainless steel. The specific shape and size of the shaft or any fitting attached to the shaft 201033140 may vary. In various aspects, a shaft or a portion of the shaft may have a circular, square, pentagon, hexagonal or elliptical cross section. Other shapes are also possible and the disclosure is not intended to be limited to any particular shape or cross section. In another aspect, the direct control and/or cross-section may vary along the length of the shaft. In yet another aspect, the shaft includes any design and/or composition suitable for holding a plurality of hot disks. Pulling roller configuration should be understood that various pull roller configurations are present in the literature and are suitable for the production of flat glass. U.S. Patent No. 6,896,646 describes a drawing cylinder for glass plate making and made of high density fiberboard material. Overall Construction of Pulling Roller "The present disclosure is not limited to a particular pull roller configuration or arrangement, and one skilled in the art can readily select a suitable pull roller configuration. In one aspect, the draw cylinder can include a configuration in which the single-area of the heat resistant disc © extends to the length of the shaft or a portion of the shaft. The draw cylinder can include one or more portions that are particularly adapted to contact the glass plate, wherein the outer perimeter of the heat resistant disk in the portion extends from the axis a greater distance than the surrounding heat resistant disk. This configuration reduces the possibility that particles from the draw rolls become deposited on the glass plate as an impurity zone. In the full drum configuration, the single-area of the heat-receiving disc contains two sections that are adapted to contact the glass panel at the same position (e.g., on opposite edges of the glass panel). In the short-roll configuration, the single-area of the heat-resistant disc mounted to the shaft is adapted to contact one of the edges of the glass plate 15 201033140, wherein a separate short roller (having a separate shaft) can be used to contact the glass plate. Relative edge. In another aspect, the draw cylinder can comprise a bare shaft configuration in which two or more regions of the heat resistant disk adapted to contact the glass ribbon are separated by a region that does not include the axis of the disk. Each of the individual regions may have an assembly to secure the heat resistant disks in position and provide an axial compressive force to the heat resistant disks disposed between the assemblies. Selection Criteria and Manufacturing The present disclosure provides a method for selecting a draw roller component and for making a draw cylinder zone from the components. The pull cylinder zone may include the entire draw cylinder in the case of a full drum configuration or a short drum configuration, or may include a portion of the draw cylinder in the case of a bare shaft configuration. In one aspect, a method for making a draw cylinder zone includes the steps of: determining a target overall density for generating a draw cylinder zone and selecting a disk of a given weight for when the given weight is The target overall density is achieved when the disk is compressed to a set volume®. For example, the set hoarding is defined by the desired length and diameter set by the finished draw cylinder zone. Conversely, the conventional method of assembling high density fiberboard materials utilizes a fixed number of heat resistant disks. Other conventional methods may include the steps of selecting a fixed number of disks and adjusting the compression; and adjusting the length accordingly to achieve the overall density of the assembled high density fiberboard material. While these conventional methods are applicable to test cartridges and are suitable for other applications, they are not ideally suited for use with draw rolls. For example, conventional methods such as 16 201033140 can result in excessive compression, unacceptable hardness levels, and uniformity variations due to changes and variability in the materials from which the assembled high density fiberboard products are made. Since the pulling cylinder has a fixed compression length, the adjustment of the compression length is not appropriate. In the case of a sample, all or a portion of the heat resistant disks are heated, for example, to at least 7 〇〇 C or at least 1, 〇〇〇 before, for example, being assembled on a draw cylinder. The crucible is fired and held for a period of time (e.g., at least about two hours) to substantially exhibit no change in composition and/or size of φ when exposed to operating temperatures. This firing step reduces the variability in the materials and the resulting draw rolls. If a firing step is performed, other firing temperatures and firing times can be utilized depending on the particular material and intended application, and the disclosure is not intended to be limited to any particular firing conditions. In one aspect, the specific target weight of the heat resistant disk is determined to occupy a fixed volume on the draw roller shaft. The fixed volume is defined by the desired length and diameter of the finished draw roll. In this method, the actual number of heat resistant disks containing the target weight may vary. _ In various aspects, the target overall density of the draw rolls can range from about 99 g/cm3 to about 1.2 g/cm3. In one aspect, the target overall density of the draw rolls can vary depending on, for example, the particular configuration of the draw rolls. For example, in a particular aspect, the target overall density of the full drum configuration can range from about 1.025 g/cm3 to about 1.05 g/cm3, for example, about 1.025 g/cm3, 1.03 g/cm3, 1.035 g/em3, 1.04 g/cm3, 1.045 g/cm3 or i.〇5 g/cm3. In another specific aspect, the target overall density of the bare shaft drum configuration can range from about 4 g/cm3 to about 1.09 g/cm3 [e.g., about 104 g/cm3, j 〇 5 g/ Cm3, 17 201033140 1·06 g/cm, 1 〇7 g/cm3, i 〇8 g/cm3 or i〇9 g/cm3. In yet another particular sensation, the target overall density of the short roller configuration may range from about g7 g/cm3 to about 1.09 g/cm3, for example, about i 〇7 g/cm3, 1.08 g/cm^ t In other aspects, the target overall density may be less than about g9 g/cm3 or greater than about 1.2 g/em3 depending on the particular material of the construction and the intended application. In addition to providing the target overall density, the predetermined target weight and/or weight range utilized to produce the heat resistant disk having the set length and straight pull tab should be selected to provide one or more of the draw roller surfaces. In part, the portions have from about 30 to about 60 at 25 ° C (eg, about 30, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57) , Shore 59 hardness of 59 or 60) or from about 40 to about 60 (e.g., about 40, 42, 44, 46, 48, 50, 52, 54, 56, 58 or 60). In one aspect, one or more portions of the draw cylinder having a target Shore D hardness value (eg, from about 30 to about 60) may be the one of the draw cylinders adapted to contact the glass ribbon during use of φ And so on. In another aspect, the hardness of each of the individual heat resistant disks can be from about 30 to about 60 after installation and compression. It should be understood that the hardness of any one or more of the heat-resistant disks is before and/or after firing, and before and/or after installation, and before and/or after compressing to a specific volume on the drawing drum shaft. Can vary.

Any one or more of the individual thermal disks can produce different Shore D hardness values. The present disclosure is directed to Shore D 18 201033140 hardness of from about 30 to about 60 on portions of the surface of the draw cylinder adapted to contact the glass ribbon. In one aspect, the hardness of a portion of the draw cylinder or draw cylinder can vary depending on the particular roll length and the desired total twist density of the diameter. For example, reducing the length of the draw cylinder zone while maintaining its diameter will increase the overall density and hardness of a given weight of material. The resulting increase in hardness can occur in a non-linear manner, such as the 0 shown in Figure 2 for compressing a portion of the draw rolls and the force to achieve a particular hardness can also vary. In various aspects, the force can range from about 1 〇, 〇〇〇 lbs to about 15,000 lbs. In other aspects, the force can be less than about 10,000 1bs or greater than about I5,000 1bs. In one aspect, if any one or more of the heat resistant disks comprise a combustible or volatile component, the target overall density should be adjusted to account for the loss of the combustible or volatile components after heating. And providing a Shore D hardness of from about 30 to about 60 after heating. This method of draw cylinder manufacturing provides a more consistent draw cylinder that reduces the undesirable effects of high ® density fiberboard material changes. Moreover, consistency in manufacturing can be incorporated into the manufacturing process by utilizing the target weight of the disk material desired to produce volume (length and diameter) relative to a set number of disks. Moreover, if there is a need to move the hardness of the resulting draw rolls having a set length and diameter to another area, the process can be adjusted by, for example, changing the target weight. Therefore, changes in target weight, overall density and/or hardness will affect the remaining parameters. In various aspects, the target weight can be adjusted to impart a change to the overall density. For example, increasing the weight of a set volume of material 201033140 will increase the overall density. Similarly, when increasing the overall density of a set volume, greater compression is required to ensure that the discs of the desired weight are supplied within the set volume. For example, when attempting to supply an increased weight disc in a set volume, this increase in compression will result in a draw cylinder having increased stiffness.

The draw rolls prepared in accordance with the various methods of the present disclosure provide an enhanced service life without the application of excessive force to the glass ribbon or to a high degree of particulate contamination. In the absence of external events (e.g., breakage of the glass ribbon), the draw rolls prepared in accordance with the present disclosure may exhibit a service life of more than 4 days, more than 75 days, or even more than 1 day. To further illustrate the principles of the present disclosure, the following examples are presented to provide a general practitioner with information on how to make and evaluate the disclosures disclosed herein.

The complete disclosure and description of the high-density secondary A-fiberboard drawing drum manufactured by the method. The following examples are intended to be purely exemplary of the disclosure and are not intended to limit the inventor's discretion as an example of his disclosure. Efforts have been made to ensure accuracy with respect to numbers (e.g., volume, temperature, etc.); however, some errors and deviations may occur. Unless the other right button _ force has 1 曰 no, the part is part by weight and the temperature is . C is the ambient temperature and the pressure is at or near atmospheric pressure. Example 1 - Pulling the drum life In a first example, the pull 3丨~t bow drum life was evaluated as a function of hardness. As shown in Fig. 1, the average hardness tester is (41), and the average hardness of the pull roller of the special &amp; _ is about 44, which is the maximum draw roller life. At that time, the maximum average pulling drum life is 20 201033140. The matrix diagram in Figure 1 illustrates the relationship between life and hardness of the durometer when the axes are interchanged. Example 2 - Relationship between bulk density and hardness In a second example, a series of draw rolls were prepared and evaluated as detailed in Table 1 below. For each of the rows in Table 1, the sample heat resistant disks were compressed to a specific overall density. The durometer hardness of each of the compressed samples is determined at six points along the length of the drum and is averaged. '

The middle curve in Figure 2 illustrates the relationship between the average durometer of the material and the overall density. This relationship can be used to identify the drum to a specified durometer range by identifying the corresponding overall density: The upper and lower limits of this intermediate curve display represent the predicted limits of future individual hardness values for each degree of overall density. T recognizes that the material is tested by, for example, the total Zhao density of various degrees between ^ g/Cm. The average of the results in each of the constricted discs was measured at six locations using a Gunn D durometer. The hardness of 2 is the fitting curve of the data, together with the M I limit of a given total density of 95%. The extension of the exhibition (4) the boundaries of the county and other (four) Shore hardness meter value of the expected changes seen in the data. Table 1 Average Shore Hardness D) 21 201033140

Hardness tester reading I — 35 (gfcc) 1 2 3 4 5 • ve! Material A 0.925 36 29 30 33 26 36Γ 317 0-925 35 32 38 30 34 4〇r 34.8 0.9S0 30 34 30 25 33 mi 30.0 0.950 39 36 39 37 35 33Γ 36.5 〇.»〇30 39 33 35 38 27 f 33.7 1.000 42 38 40 40 41 39Γ 40.0 1.000 44 53 51 45 51 39Γ 47.2 1.000 43 40 36 46 44 44Γ 42.2 1.025 43 40 47 39 41 41 r 41.8 ι.ώδ 35 43 38 38 44 43Γ 40.2 1.025 51 43 43 49 45 44f *45.0 1.050 53 45 411 44 43 41 r 44,5 ”·5δΟ 42 46 38 37 40 41f 407 1.050 49 53 '54 53 58 45[ '52.0 JT Fine 51 52 58 53 56 60Γ 54.7 53 47 54 49H 5A It 52.2 „1.090 .............. 51 58 52 52 46 53Γ 52.0 1.100 pi1 5T^ 4f B4/ 56 5 〇[ 50.5 J.1Q0 44 53 50 41 44 43 r 45.8 52 46 55 ΐοι Dad 56 f 52.5 „.1,125 46 45 49 53 47 55 [ 49.2 55 52 57 56 57 56f 55.5 Buried one 1-200 57 bT wind 52 58 53 48 50 52 ST 46Γ 59Γ 51.8 55.5TM ~

EXAMPLE 3 - COMPARATIVE EXAMPLE In a comparative example, an assembled high density fiberboard article can be prepared for a fixed compression length, which can be the fixed length and the compression force necessary to supply the disks to the fixed length. Several heat resistant discs were selected. The different compressions required to supply the disks to the fixed length, can produce different hardnesses on the surface of the assembled high density fiberboard articles. In contrast, one aspect of the present invention includes selecting the weight of the heat resistant disk that achieves a target overall density when the heat resistant disks are placed within a set volume of the draw rolls. As described in the various embodiments herein, this method provides improved consistency and controlled hardness as compared to conventional methods and materials. Various publications are referenced throughout this application. The disclosures of these publications are hereby incorporated by reference in their entirety in their entirety in their entireties in the extent the the the the the the the the the 22 201033140 Various modifications and variations can be made to the compounds, compositions and methods described herein. The other compounds, compositions, and methods of the methods described herein will be apparent from the description of the <RTIgt; </ RTI> <RTIgt; This patent specification and examples are intended to be exemplary. For example, the invention may be practiced in one or more of the following aspects: According to a first aspect, a method for making a draw cylinder zone is provided that includes a given length And for a given diameter, the method comprises the steps of: selecting a set of heat resistant disks having a suitable outer diameter and combined weight such that when the set of disks is set to fill the given length and the given diameter ' The set of discs achieve a total crucible density of from about 0.9 g/cm3 to about 1.2 g/cm3; assembling the set of heat resistant discs onto a shaft; attaching at least one first and one second fitting to the shaft, And aligning the first and second fittings to apply a coaxial compressive force to the set of disks; and compressing the set of disks to the given length to enable the pulling of the glass ribbon At least a portion of the draw barrel zone has a Shore D hardness of from about 3 Torr to about 60 at about 25 Å. According to a second aspect, the aspect is provided to achieve a self-circumferential configuration from about 1.025 g/cm3 to about a third aspect. The method of claim 1, wherein the method of selecting the overall density of g/cm3, wherein the pull roller 23 201033140 provides a method according to a fourth aspect, wherein the selection is used to achieve The overall density is from 1.04 gw to about 109^3. According to a fifth aspect, the method of aspect 4 is provided, wherein the pull-out zone comprises a portion of the draw cylinder, the draw cylinder comprising a bare shaft configuration. The method of providing a state i according to the -sixth aspect, wherein the selection is to achieve an overall density from about 99 g/cm3 to about. According to the seventh aspect, the method of aspect 6 is provided, wherein the pull roller zone has a short drum configuration. According to the eighth aspect, the method of aspect 1, wherein at least a portion of the group of heat-resistant disks comprises aluminosilicate refractory fibers, silicates, mica and kaolin clay. According to a ninth aspect, the method of providing aspect 1, wherein step d) comprises the step of compressing the set of disks such that at least a portion of the draw cylinder zone adapted to contact a glass ribbon is at about 25 〇c It has a Shore D hardness of from about 40 to about 60. According to a tenth aspect, the method of aspect 1, wherein the given diameter of the draw barrel region varies along a given length. According to a first aspect, the method of aspect 1, wherein the pulling roller zone comprises a first region of a pulling roller, and the pulling roller further comprises a second region on the shaft, wherein the first Each of the second regions includes at least two heat resistant disks 0 positioned between the at least two assemblies. According to a twelfth aspect, the method of providing the aspect 11 wherein the first and second regions are one One of the axes between the axes does not contain a disc. 24 201033140 According to the thirteenth aspect, provide the aspect! The method wherein at least a portion of the heat resistant turns in the set have a central bore shaped to generally match a cross section of the shaft. According to a fourteenth aspect, a method of providing a state to any of the aspects of the sample 13 is provided, wherein the set of heat resistant disks are controlled prior to assembly onto the shaft. BRIEF DESCRIPTION OF THE DRAWINGS [0007] The accompanying drawings, which are incorporated in the claims Figure 1 is a matrix diagram of the average drum hardness and working life of a draw cylinder. Figure 2 illustrates the relationship between the change in overall density and the change in hardness of the durometer. [Main component symbol description] None 25

Claims (1)

201033140 VII. Patent application scope: 1. A method for making a pull-rolling w/protrusion zone, the pull-up drum zone includes a given length and - given straight care, the straight u method comprises the following steps : a. Selecting a set of heat-resistant rounds that have a suitable external operation, __ "Japanese-style divination, -0• combined weight, so that when the set of discs is set to fill the given length and the given At the diameter, the set of disks reaches an overall density from about 〇·9 g/cm 3 to about ι 2 g/cm 3 ; b. assembling the set of heat resistant disks onto a shaft; C. at least one first loaded An accessory and a second fitting are attached to the shaft, and the first and second fittings are positioned to apply a same force to the set of discs; and d. compress the set of discs to the given The length is such that at least a portion of the draw cylinder zone adapted to contact a glass ribbon has a Shore D hardness of from about 30 to about 60 at about 25. The method of claim 2, wherein the set of heat resistant disks is fired prior to assembly onto the shaft. 3. The method of claim 2, wherein the selection is to achieve an overall density of from about 1.025 g/cm3 to about 1.05 g/cm3, and the draw cylinder zone has a full drum configuration. 4. The method of claim 1, wherein the selection is to achieve an overall density of from about 1.04 g/cm3 to about 1.09 g/cm3, and the 26 201033140 pull zone comprises - a pull roller - In part, the pull roller includes a - bare shaft configuration. 5. The method of claim 2, wherein the selection is to achieve an overall density of from about 9 g/cm3 to about one and the pull cylinder zone has a short roller configuration. 6. The method of claim 1, wherein at least a portion of the set of heat resistant disks comprises aluminosilicate refractory fibers, silicates, mica and kaolin clay. 7. The method of claim </ RTI> wherein the step d) comprises the step of compressing the set of disks such that at least a portion of the draw cylinder zone adapted to contact a glass ribbon has a self-approximately at about 25 To about (6) one of the Shore D hardness. 8. The method of claim 2, wherein the pulling cylinder zone comprises a first region of the pulling cylinder, and the pulling cylinder further comprises a second region on the shaft, wherein the first Each of the region and the second region includes at least two heat resistant disks positioned between the at least two fittings. 9. The method of claim 5, wherein each of the axes of the first region and the second region does not comprise a disk. The method of claim 1, wherein at least a portion of the heat resistant disks in the set have a central aperture shaped to substantially match a cross section of the shaft. 28