TWI700255B - Glass roll and its manufacturing method - Google Patents

Glass roll and its manufacturing method Download PDF

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TWI700255B
TWI700255B TW105140100A TW105140100A TWI700255B TW I700255 B TWI700255 B TW I700255B TW 105140100 A TW105140100 A TW 105140100A TW 105140100 A TW105140100 A TW 105140100A TW I700255 B TWI700255 B TW I700255B
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glass
core
expansion
roll
glass film
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TW105140100A
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TW201733938A (en
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鑑継薫
秋山修二
石田直也
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日商日本電氣硝子股份有限公司
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)

Abstract

玻璃卷(1)係藉由在將膨脹吸收材(3)纏繞於卷芯(2)的周圍之複合卷芯(4)，捲繞玻璃薄膜(9)來構成。 The glass roll (1) is constituted by winding the composite roll core (4) around the roll core (2) around the expansion absorbing material (3), and winding the glass film (9).

Description

玻璃卷及其製造方法 Glass roll and its manufacturing method

本發明係關於在卷芯的周圍捲繞有玻璃薄膜之玻璃卷及其製造方法，特別是關於卷芯的周邊構造之改良技術。 The present invention relates to a glass roll with a glass film wound around a core and a manufacturing method thereof, and particularly relates to an improved technology of the peripheral structure of the core.

如習知，液晶顯示器、有機EL顯示器等的薄形顯示機器，和近年極速普及的智慧型手機、平板電腦等的行動機器被要求輕量化。因此，作為採用於這些機器的玻璃基板，薄板化成薄膜狀的玻璃薄膜已被投入實際使用中。 As is conventionally known, thin display devices such as liquid crystal displays and organic EL displays, and mobile devices such as smartphones and tablet computers, which have been rapidly spreading in recent years, are required to be lightweight. Therefore, as the glass substrate used in these machines, a thin-plate glass film has been put into practical use.

此玻璃薄膜係在最終製品的階段，形成為略矩形狀等的形態，但包含該最終製品的階段以前的製造製程之各種處理製程等的階段，作為呈帶狀形態進行處理。 This glass film is formed into a roughly rectangular shape or the like at the stage of the final product, but it is treated as a belt-like shape including stages including various treatment processes of the manufacturing process before the stage of the final product.

這種的玻璃薄膜係具有適當的可撓性，因此，考量處理時、保管時或運輸時等的便利性，一般是作成為捲繞於卷芯的周圍之玻璃卷的形態。如此預先作成為玻璃卷形態的話，不僅玻璃薄膜的處理性等優良，並且即使在對玻璃薄膜進行各種處理之情況，可謀求作業的效率 化。 This kind of glass film has appropriate flexibility. Therefore, considering the convenience during handling, storage, or transportation, it is generally made into a form of a glass roll wound around the core. If it is made into a glass roll form in this way, not only is the handling of the glass film excellent, but also the efficiency of the work can be achieved even when the glass film is processed in various ways. 化.

此玻璃卷係如專利文獻1所記載，以金屬等形成卷芯，或從謀求輕量化的觀點來看，以氯乙烯等的熱可塑性樹脂等形成。又，藉由在此卷芯的周圍，賦予需要的捲取方向之張力而捲取玻璃薄膜，製造玻璃卷。 As described in Patent Document 1, this glass roll is formed of a core made of metal or the like, or, from the viewpoint of achieving weight reduction, made of thermoplastic resin such as vinyl chloride or the like. In addition, the glass film is wound by applying tension in the required winding direction around the winding core to produce a glass roll.

如此所製造的玻璃卷係以玻璃製造商等進行捆包並出貨，經過長距離運輸等，搬入到製造前述各種最終製品的機器製造商等。 The glass rolls manufactured in this way are packaged and shipped by a glass manufacturer, etc., and transported over long distances, etc., to machine manufacturers that manufacture the aforementioned various final products.

〔先前技術文獻〕 [Prior technical literature] 〔專利文獻〕 〔Patent Literature〕

[專利文獻1]日本特開2015-51912號公報 [Patent Document 1] Japanese Patent Application Publication No. 2015-51912

又，當輸送玻璃卷時，不僅平常的溫度變化，依據剝離製造商等與機器製造商的區域關係，亦會產生溫度變化。伴隨此變化，玻璃卷溫度上升之情況，會導致以下所示的問題。 In addition, when the glass roll is transported, not only the usual temperature changes, but also temperature changes depending on the regional relationship between the peeling manufacturer and the machine manufacturer. Along with this change, the temperature of the glass roll rises, causing the following problems.

亦即，玻璃卷的卷芯係如前述般，以金屬、氯乙烯等的樹脂形成，因此，具有依據溫度上升，容易膨脹之特性。相對於此，捲繞於卷芯的玻璃薄膜係際偶即使溫度上升也不易延伸之特性。 That is, the core of the glass roll is formed of a resin such as metal or vinyl chloride as described above, and therefore has the characteristic of being easy to expand in response to temperature rise. On the other hand, the glass film wound around the core has a characteristic that it is difficult to stretch even if the temperature rises.

因此，伴隨溫度上升，卷芯的直徑增大之情 況，拉引應力會作用於玻璃薄膜，在該拉引應力值過度變大之情況，在玻璃薄膜會產生破損。此玻璃薄膜的破損不僅是玻璃卷的卷芯周邊之內層部，亦會有到達外層部之情況。 Therefore, as the temperature rises, the diameter of the core increases In addition, the tensile stress acts on the glass film, and when the tensile stress value becomes excessively large, the glass film may be damaged. The damage of the glass film is not only the inner layer around the core of the glass roll, but also the outer layer.

因此，在玻璃製造商等所製造出的良品之玻璃卷在出貨後運送期間，變成不良品而無法使用等的問題產生。再者，這樣的問題即使在玻璃製造商等的玻璃卷製造途中、保管時等，當產生溫度上升時亦可能引起。 Therefore, problems such as defective glass rolls manufactured by glass manufacturers and the like become unusable during shipping after shipment. Furthermore, such a problem may be caused when a temperature rise occurs even in the middle of glass roll manufacturing, storage, etc. of a glass manufacturer.

從以上的觀點來看，本發明之課題係在於即使在伴隨玻璃卷的溫度上升，造成卷芯的直徑增大之情況，亦可有效地迴避在玻璃薄膜上產生破損之事態。 From the above point of view, the subject of the present invention is to effectively avoid the occurrence of damage to the glass film even if the diameter of the core increases as the temperature of the glass roll increases.

為了解決前述課題而開發完成的本發明之玻璃卷，其特徵為係在將膨脹吸收材纏繞於卷芯的周圍之複合卷芯，捲繞有玻璃薄膜。在此，[膨脹吸收]係指對於卷芯的膨脹(直徑增大)，為了使玻璃薄膜不會追隨該膨脹而延伸，將卷芯的膨脹吸收之意思。 The glass roll of the present invention developed to solve the aforementioned problems is characterized in that it is a composite roll core in which an expansion absorbent is wound around the core, and a glass film is wound. Here, "expansion absorption" means to absorb the expansion (increasing in diameter) of the roll core so that the glass film does not follow the expansion and stretches.

若依據這樣的結構，即使因玻璃卷的溫度上升，卷芯的直徑增大，由於玻璃薄膜是捲繞於複合卷芯的構成要件亦即膨脹吸收材外周側，故，卷芯的直徑之增大會被膨脹吸收材所吸收，對玻璃薄膜不會造成太大的影響。換言之，在卷芯的直徑增大之情況，即使玻璃薄膜未追隨該增大而延伸，藉由膨脹吸收材的膨脹吸收功能，過 度的拉引應力也變得不會作用於玻璃薄膜。其結果，可有效地迴避玻璃薄膜產生破損，能夠維持作為良品之玻璃卷。從這樣的觀點來看，作為膨脹吸收材，能夠使用：對已被捲繞的玻璃薄膜，具有膨脹吸收功能的緩衝材或緩衝薄片，或具有膨脹吸收功能的吸震材或吸震薄片。在此，為了作為膨脹吸收材，具有：藉由依據溫度變化之卷芯的直徑的變化，使得作用於該構件的徑方向之壓縮應力變化的情況，該構件的厚度變化0.5mm以上之特性為佳。 According to this structure, even if the temperature of the glass roll increases, the diameter of the core increases. Since the glass film is wound around the outer periphery of the expanded absorbent material, which is a constituent element of the composite core, the diameter of the core increases. The assembly is absorbed by the swelling absorbent material, which will not cause much influence on the glass film. In other words, when the diameter of the roll core increases, even if the glass film does not follow the increase and extends, the expansion absorption function of the expansion absorption material will over The tensile stress of a high degree does not act on the glass film. As a result, damage to the glass film can be effectively avoided, and a good glass roll can be maintained. From such a point of view, as the expansion-absorbing material, it is possible to use a cushioning material or sheet having an expansion-absorbing function, or a shock-absorbing material or sheet having an expansion-absorbing function for the wound glass film. Here, in order to serve as an expansion absorbent material, the characteristic that the compressive stress acting on the member in the radial direction changes due to the change in the diameter of the core according to the temperature change, and the thickness of the member changes by 0.5 mm or more. good.

具體而言，作為膨脹吸收材，理想為發泡樹脂薄片，更理想為厚度2mm-7mm的發泡樹脂薄片。 Specifically, as the expansion absorbing material, a foamed resin sheet is preferable, and a foamed resin sheet having a thickness of 2 mm-7 mm is more preferable.

藉此，發泡樹脂薄片可充分地發揮膨脹吸收功能，能夠適當地阻止因玻璃卷的溫度上升造成玻璃薄膜破損之情況。又，當發泡樹脂薄片的厚度為2mm-7mm時，可抑制因其厚度不足所引起之膨脹吸收功能的阻礙，並且亦可抑制因其厚度過厚所引起之過量等級。亦即，當發泡樹脂薄片的厚度未滿2mm時，會有無法充分地發揮膨脹吸收功能之虞。另外，當發泡樹脂薄片的厚度超過7mm時，會成為過量等級，造成材料的浪費。因此，若厚度是在前述數值範圍內的話，則可能迴避這樣的缺失。 Thereby, the foamed resin sheet can fully exhibit the expansion and absorption function, and it is possible to appropriately prevent the glass film from being damaged due to the temperature rise of the glass roll. In addition, when the thickness of the foamed resin sheet is 2mm-7mm, the hindrance of the expansion absorption function caused by insufficient thickness can be suppressed, and the excessive level caused by the excessive thickness can also be suppressed. That is, when the thickness of the foamed resin sheet is less than 2 mm, there is a possibility that the expansion and absorption function may not be sufficiently exhibited. In addition, when the thickness of the foamed resin sheet exceeds 7 mm, it becomes an excessive level, resulting in waste of materials. Therefore, if the thickness is within the aforementioned numerical range, it is possible to avoid such a defect.

又，發泡樹脂薄片的發泡倍率係25%~45%為佳。 In addition, the expansion ratio of the foamed resin sheet is preferably 25% to 45%.

藉此，發泡樹脂薄片能夠從其材質面充分地發揮膨脹吸收功能。亦即，當發泡樹脂薄片的發泡倍率未滿25%時，會有柔軟性變小且變得過硬之傾向，因此，會 有隨著卷芯的直徑增大，玻璃薄膜也延伸造成過度的拉引應力作用之虞。另外，當發泡樹脂薄片的發泡倍率超過45%時，會有柔軟性變大且變得過軟之傾向，因此，會有即使在卷芯的直徑增大之前，也會被玻璃薄膜纏緊造成發泡樹脂薄片被不適當壓縮之虞。因此，若發泡倍率是在前述數值範圍內的話，則可能迴避這樣的缺失。 Thereby, the foamed resin sheet can fully exhibit the expansion absorption function from the material side. That is, when the expansion ratio of the foamed resin sheet is less than 25%, the flexibility tends to decrease and become too hard. As the diameter of the roll core increases, the glass film also stretches, causing excessive tensile stress. In addition, when the expansion ratio of the foamed resin sheet exceeds 45%, the flexibility will increase and become too soft. Therefore, even before the diameter of the core increases, it will be entangled with the glass film. The tightness may cause the foamed resin sheet to be improperly compressed. Therefore, if the expansion ratio is within the aforementioned numerical range, it is possible to avoid such a defect.

在以上的結構，膨脹吸收材係具有與卷芯的外周面之圓周方向全長相對應的長度，且在圓周方向的兩端部對接的狀態下纏繞於卷芯的周圍。 In the above structure, the expansion-absorbent material has a length corresponding to the full length of the outer peripheral surface of the core in the circumferential direction, and is wound around the core in a state where both ends in the circumferential direction are butted.

藉此，能夠防止膨脹吸收材在周方向重疊而形成階差之情況，因此，可在複合卷芯的周圍不會產生不適當的變形、不適當的彎曲應力而能圓滑地加以捲繞玻璃薄膜。藉此，可更進一步確實地阻止因伴隨溫度上升之卷芯的直徑增大所引起之玻璃薄膜的破損。 This prevents the expansion and absorbing material from overlapping in the circumferential direction and forming a step. Therefore, the glass film can be smoothly wound without undue deformation or undue bending stress around the composite core. . Thereby, it is possible to more reliably prevent the glass film from being damaged due to the increase in the diameter of the winding core accompanying the temperature increase.

在以上的結構，亦可為玻璃薄膜係在玻璃薄膜連結於導引帶的狀態下，捲繞於複合卷芯。 In the above structure, the glass film may be wound around the composite winding core with the glass film connected to the guide belt.

藉此，能夠形成為導引帶捲繞於膨脹吸收材的外周側且玻璃薄膜的內周側之狀態。本發明者們研究結果得知，在此情況，即使玻璃薄膜連結於導引帶，膨脹吸收材也未纏繞於卷芯的周圍之情況，若該玻璃卷溫度上升的話，在玻璃薄膜上會產生破損。又，導引帶係非用來發揮對卷芯的膨脹之膨脹吸收功能而連結於玻璃薄膜，而是當捲取玻璃薄膜時可適當地牽引玻璃薄膜用者。因此，即使在玻璃薄膜被連結於導引帶之情況，若無法發揮藉由膨 脹吸收材之膨脹吸收功能，則無法防止因玻璃卷的溫度上升所引起之玻璃薄膜的破損。這意味著，即使導引帶存在於玻璃薄膜的內層側，也需要進一步藉由存在於導引帶的內層側之膨脹吸收材發揮膨脹吸收功能，才可防止玻璃薄膜破損。 Thereby, it can be set as the state in which the guide tape was wound around the outer peripheral side of an expansion-absorption material, and the inner peripheral side of a glass film. The inventors of the present invention have found that in this case, even if the glass film is connected to the guide belt, the expansion-absorbent material is not wound around the core. If the temperature of the glass roll rises, there will be production on the glass film. damaged. In addition, the guide belt is not used to perform the expansion absorption function of the expansion of the winding core and is connected to the glass film, but is used to pull the glass film appropriately when the glass film is rolled. Therefore, even in the case where the glass film is connected to the guide belt, if the The swelling absorption function of the swelling absorbent material cannot prevent the glass film from being damaged due to the temperature rise of the glass roll. This means that even if the guide belt is present on the inner layer side of the glass film, the expansion absorbing material existing on the inner layer side of the guide belt needs to further exert the expansion absorption function to prevent the glass film from being damaged.

在此情況，膨脹吸收材的厚度係導引帶的厚度之20倍至140倍為佳。 In this case, the thickness of the swelling absorbent material is preferably 20 to 140 times the thickness of the guide belt.

藉此，不會因導引帶的厚度較厚造成玻璃卷肥大化，可適當地獲得防止因膨脹吸收材造成玻璃薄膜破損。因此，若兩者的厚度關係是處於前述數值關係的話，則膨脹吸收材可充分地發揮膨脹吸收功能，導引帶也可充分地發揮其本來的功能亦即適當地牽引玻璃薄膜之功能。 Thereby, the glass roll will not be enlarged due to the thick guide belt, and the glass film can be prevented from being damaged due to the expansion of the absorbent material. Therefore, if the thickness relationship between the two is in the aforementioned numerical relationship, the expansion-absorbent material can fully perform the expansion and absorption function, and the guide belt can also fully perform its original function, that is, the function of appropriately pulling the glass film.

在以上的結構，亦可為玻璃薄膜係在重疊於保護薄片的狀態下，捲繞於複合卷芯。 In the above structure, the glass film may be wound on the composite core in a state of being overlapped on the protective sheet.

藉此，藉由保護薄片使得玻璃薄膜彼此不會接觸，不易產生玻璃薄膜受到損傷等的障礙。本發明者們研究結果得知，在此情況，即使為玻璃薄膜在重疊於保護薄片的狀態下捲繞於卷芯的周圍之玻璃卷，膨脹吸收材也未固定於卷芯的周圍之情況，若該玻璃卷溫度上升的話，在玻璃薄膜上會產生破損。又，保護薄片並非以膨脹吸收為目的而重疊於玻璃薄膜，而是用來使玻璃薄膜不易受損且可適當地捲繞玻璃薄膜之薄片。因此，即使在玻璃薄膜重疊於保護薄片之情況，若無法發揮藉由膨脹吸收材之膨脹吸收功能的話，則無法防止因玻璃卷的溫度上升所引起 之玻璃薄膜的破損。這意味著，即使保護薄片存在於玻璃薄膜的內層側，也需要進一步藉由存在於保護薄片的內層側之膨脹吸收材發揮膨脹吸收功能，才可防止玻璃薄膜破損。 This prevents the glass films from contacting each other by the protective sheet, and it is difficult to produce obstacles such as damage to the glass films. The inventors of the present invention have found that in this case, even if the glass film is wound around the core in the state of overlapping the protective sheet, the expansion absorbent is not fixed around the core. If the temperature of the glass roll rises, the glass film will be damaged. In addition, the protective sheet is not superimposed on the glass film for the purpose of expansion and absorption, but is used to prevent the glass film from being damaged and can be appropriately wound around the glass film. Therefore, even when the glass film overlaps the protective sheet, if the expansion absorption function by the expansion absorption material cannot be exerted, the temperature rise of the glass roll cannot be prevented. The damage of the glass film. This means that even if the protective sheet is present on the inner layer side of the glass film, the expansion absorbing material present on the inner layer side of the protective sheet needs to further exert an expansion absorption function to prevent damage to the glass film.

在此情況，理想為膨脹吸收材的厚度係保護薄片的厚度之20倍至140倍。 In this case, it is desirable that the thickness of the swelling absorbent material is 20 to 140 times the thickness of the protective sheet.

藉此，不會因保護薄片的厚度較厚造成玻璃卷肥大化，可適當地獲得防止因膨脹吸收材造成玻璃薄膜破損。因此，若兩者的厚度關係是處於前述數值關係的話，則膨脹吸收材可充分地發揮膨脹吸收功能，保護薄片也可充分地發揮其本來的功能亦即使玻璃薄膜不易受損且可對玻璃薄膜賦予適當的張力之功能。 Thereby, it is possible to prevent the glass roll from being enlarged due to the thick thickness of the protective sheet, and it is possible to appropriately prevent the glass film from being damaged due to the expansion absorbent. Therefore, if the relationship between the thickness of the two is in the aforementioned numerical relationship, the expansion-absorbing material can fully exert its expansion and absorption function, and the protective sheet can also fully exert its original function even if the glass film is not easily damaged and can be Give proper tension function.

在以上的結構，理想為膨脹吸收材的寬度方向兩端是從玻璃薄膜的寬度方向兩端突出。 In the above structure, it is desirable that both ends in the width direction of the expansion absorbent material protrude from both ends in the width direction of the glass film.

藉此，在玻璃薄膜的內層側的寬度方向全長範圍，存在有膨脹吸收材，因此，可獲得穩定的捲繞狀態，並且對玻璃薄膜，可發揮寬度方向全長範圍之均等的膨脹吸收效果。 Thereby, the expansion absorbing material exists in the entire width direction of the inner layer side of the glass film, so a stable wound state can be obtained, and the glass film can exhibit an equal expansion absorption effect over the entire width direction.

又，理想為膨脹吸收材的寬度方向兩端是從導引帶的寬度方向兩端突出。 In addition, it is desirable that both ends in the width direction of the expanded absorbent material protrude from both ends in the width direction of the guide belt.

藉此，在導引帶的內層側的寬度方向全長範圍，存在有膨脹吸收材，因此，可獲得穩定的捲繞狀態，並且對導引帶進而對玻璃薄膜，可發揮寬度方向全長範圍之均等的膨脹吸收效果。 In this way, the expansion absorbent material exists in the entire width direction of the inner layer side of the guide belt. Therefore, a stable winding state can be obtained, and the guide belt and the glass film can exhibit the entire width direction The equal expansion and absorption effect.

且，理想為保護薄片的寬度方向兩端是從膨脹吸收材的寬度方向兩端突出。 In addition, it is desirable that both ends in the width direction of the protective sheet protrude from both ends in the width direction of the expansion absorbent.

藉此，在將凸緣安裝於卷芯的兩端之結構的情況，即使玻璃薄膜對凸緣相對地接近移動，首先，最初保護薄片接觸到凸緣，因此，可迴避玻璃薄膜與凸緣之碰撞，並且亦可迴避膨脹吸收材與凸緣之接觸。因此，玻璃薄膜及膨脹吸收材被適當地保護。 In this way, in the case of the structure where the flange is installed on the two ends of the winding core, even if the glass film moves relatively close to the flange, first, the protective sheet contacts the flange first. Therefore, the gap between the glass film and the flange can be avoided. Collision, and can also avoid contact between the expansion absorber and the flange. Therefore, the glass film and the expansion absorbent are appropriately protected.

在以上的結構，導引帶的長度方向一端部是固定於膨脹吸收材。 In the above structure, one end of the guide belt in the longitudinal direction is fixed to the expansion-absorbent material.

藉此，當進行玻璃薄膜的捲取時，導引帶等正確地導引玻璃薄膜，能夠獲得高階之玻璃卷。 Thereby, when the glass film is rolled, the guide belt etc. correctly guide the glass film, and a high-end glass roll can be obtained.

在此情況，保護薄片的長度方向一端部是固定於導引帶。 In this case, one end of the protective sheet in the longitudinal direction is fixed to the guide belt.

藉此，可縮短保護薄片的捲繞長度，可減少其使用量。 Thereby, the winding length of the protective sheet can be shortened, and its usage can be reduced.

亦可作成為保護薄片的長度方向一端部固定於膨脹吸收材，來取代此結構。 It can also be used as a protective sheet to fix one end in the longitudinal direction to the swelling absorbent material to replace this structure.

藉此，當進行玻璃薄膜的捲取時，可從保護薄片對玻璃薄膜作用適當的捲繞方向之張力，能夠獲得高階之玻璃卷。 Thereby, when the glass film is rolled, the protective sheet can act on the glass film with appropriate tension in the winding direction, and a high-end glass roll can be obtained.

為了解決前述課題而開發完成的本發明之玻璃卷的製造方法，其特徵為具有：製作將膨脹吸收材纏繞於卷芯的周圍之複合卷芯的卷芯製作製程；和將玻璃薄膜捲繞於複合卷芯的捲繞製程。 The method for manufacturing the glass roll of the present invention developed to solve the aforementioned problems is characterized by having: a core manufacturing process for producing a composite core in which the expansion absorbent is wound around the core; and winding the glass film on The winding process of the composite core.

若依據這樣的結構，由於先執行卷芯製作製程後再執行捲繞製程，故，不僅依據作業的區分化，可謀求作業效率的提升，並且藉由此方法所製造的玻璃卷，如前述般，藉由膨脹吸收材的功能，能夠充分地進行對溫度上升之玻璃薄膜的保護。 According to this structure, since the core manufacturing process is performed first and then the winding process is performed, it is not only based on the differentiation of the work, but also the improvement of work efficiency, and the glass roll manufactured by this method is as described above , With the function of the expansion absorbing material, it can fully protect the glass film that is rising in temperature.

若依據本發明，即使在伴隨玻璃卷的溫度上升，造成卷芯的直徑增大之情況，亦可有效地阻止在玻璃薄膜上可能產生的破損。 According to the present invention, even when the temperature of the glass roll increases, the diameter of the roll core increases, it is possible to effectively prevent possible damage to the glass film.

1‧‧‧玻璃卷 1‧‧‧Glass roll

2‧‧‧卷芯 2‧‧‧Core

3‧‧‧膨脹吸收材(發泡樹脂薄片) 3‧‧‧Expandable absorbent material (foamed resin sheet)

3x‧‧‧膨脹吸收材的寬度方向端部 3x‧‧‧The width direction end of the expansion absorbent

4‧‧‧複合卷芯 4‧‧‧Composite core

6‧‧‧膨脹吸收材的對接部 6‧‧‧Butt joint of swelling absorbent material

7‧‧‧導引帶(開始捲繞側導引帶) 7‧‧‧Guide belt (start winding side guide belt)

7x‧‧‧導引帶的寬度方向端部 7x‧‧‧The width direction end of the guide belt

9‧‧‧玻璃薄膜 9‧‧‧Glass film

9x‧‧‧玻璃薄膜的寬度方向端部 9x‧‧‧The width direction end of the glass film

13‧‧‧保護薄片 13‧‧‧Protection sheet

13x‧‧‧保護薄片的寬度方向端部 13x‧‧‧The width direction end of the protective sheet

15‧‧‧凸緣 15‧‧‧Flange

圖1係顯示本發明的實施形態之玻璃卷的全體結構(特別是複合卷芯的結構)之斜視圖。 Fig. 1 is a perspective view showing the overall structure of the glass roll (especially the structure of the composite roll core) according to the embodiment of the present invention.

圖2a係顯示本發明的實施形態之玻璃卷的構成要件之複合卷芯的膨脹吸收材之單體正面圖。 Fig. 2a is a front view of a single body of the expansion absorbent material of the composite core showing the constituent elements of the glass roll of the embodiment of the present invention.

圖2b係顯示本發明的實施形態之玻璃卷的構成要件之複合卷芯的膨脹吸收材之單體側面圖。 Fig. 2b is a side view of a single body of the expanded absorbent material of the composite core showing the constituent elements of the glass roll according to the embodiment of the present invention.

圖3係顯示本發明的實施形態之玻璃卷的構成要件之複合卷芯的周邊構造之斜視圖。 Fig. 3 is a perspective view showing the peripheral structure of the composite core, which is a constituent element of the glass roll according to the embodiment of the present invention.

圖4係顯示本發明的實施形態之玻璃卷的全體結構之概略側面圖。 Fig. 4 is a schematic side view showing the overall structure of the glass roll according to the embodiment of the present invention.

圖5係顯示本發明的實施形態之玻璃卷的局部結構之 縱斷正面圖。 Figure 5 shows a partial structure of the glass roll of the embodiment of the present invention Longitudinal front view.

圖6a係顯示本發明的實施形態之玻璃卷的構成要件之複合卷芯的製作途中的狀態之側面圖。 Fig. 6a is a side view showing a state in the middle of production of a composite core, which is a constituent element of the glass roll according to the embodiment of the present invention.

圖6b係顯示本發明的實施形態之玻璃卷的構成要件之複合卷芯的製作後的狀態之側面圖。 Fig. 6b is a side view showing the state after production of the composite core, which is the constituent element of the glass roll according to the embodiment of the present invention.

圖7a係顯示本發明的實施形態之玻璃卷的構成要件之複合卷芯的變形例之製作途中的狀態之側面圖。 Fig. 7a is a side view showing a state in the middle of production of a modified example of the composite core, which is the constituent element of the glass roll according to the embodiment of the present invention.

圖7b係顯示本發明的實施形態之玻璃卷的構成要件之複合卷芯的變形例之製作後的狀態之側面圖。 Fig. 7b is a side view showing the state after the production of the modified example of the composite core, which is the constituent element of the glass roll according to the embodiment of the present invention.

圖8係顯示本發明的實施形態之玻璃卷的構成要件之複合卷芯的周邊構造的變形例之斜視圖。 Fig. 8 is a perspective view showing a modified example of the peripheral structure of the composite core, which is the constituent element of the glass roll according to the embodiment of the present invention.

圖9係顯示本發明的實施形態之玻璃卷的構成要件之複合卷芯的周邊構造的變形例之側面圖。 Fig. 9 is a side view showing a modification of the peripheral structure of the composite core, which is the constituent element of the glass roll according to the embodiment of the present invention.

以下，參照圖面說明關於本發明的實施形態之玻璃卷及其製造方法。 Hereinafter, the glass roll and the manufacturing method thereof according to the embodiment of the present invention will be described with reference to the drawings.

圖1係顯示本發明的實施形態之玻璃卷的局部結構之斜視圖。如同圖所示，玻璃卷1係具備藉由在將膨脹吸收材3纏繞於卷芯2的周圍之複合卷芯4。膨脹吸收材3係具有膨脹吸收功能，前述膨脹吸收功能係在卷芯2伴隨著玻璃卷1的溫度上升而膨脹，造成卷芯2的直徑增大之情況，使該卷芯2的膨脹不會直接傳達至外周側之功能。作為膨脹吸收材3，可使用具有這樣的膨脹吸收功 能之緩衝材或緩衝薄片、或吸震材或吸震薄片，在本實施形態，是使用具有這種膨脹吸收功能的發泡樹脂薄片。在此情況，理想為作為膨脹吸收材3之發泡樹脂薄片是由聚乙烯製發泡樹脂等所構成。 Fig. 1 is a perspective view showing a partial structure of a glass roll according to an embodiment of the present invention. As shown in the figure, the glass roll 1 is provided with a composite roll core 4 by winding the expansion absorbing material 3 around the roll core 2. The expansion absorbing material 3 has the function of swelling and absorbing. The aforementioned swelling and absorbing function is that the core 2 expands as the temperature of the glass roll 1 rises, causing the diameter of the core 2 to increase, so that the expansion of the core 2 is prevented. The function is directly communicated to the outer periphery. As the swelling absorbing material 3, it can use A functional cushioning material or a cushioning sheet, or a shock-absorbing material or a shock-absorbing sheet, in this embodiment, a foamed resin sheet having such an expansion and absorption function is used. In this case, it is desirable that the foamed resin sheet as the expansion absorbent 3 is made of polyethylene foamed resin or the like.

如圖2a及圖2b所示，作為膨脹吸收材之發泡樹脂薄片3，厚度T1為2mm至7mm，理想為厚度T1的上限值是6mm、下限值是3mm，發泡倍率為25%至45%，理想為發泡倍率的上限值是40%、下限值是30%。又，發泡樹脂薄片3的長度L1係與卷芯2的外周面2a之周方向長度相同或略相同。因此，發泡樹脂薄片3的長度L1係與卷芯2的外周面2a之周方向長度相對應。又，在發泡樹脂薄片3的長度方向之兩端部，分別貼有膠帶體5，前述膠帶體5是由在兩面具有黏著面或接著面之樹脂等所構成。在此情況，膠帶體5係黏貼於發泡樹脂薄片3的長度方向之至少兩端部即可，因此，亦可在長度方向的中間部進一步黏貼一片或複數片膠帶體，或在全面(全區域)範圍黏貼一片膠帶體等，可進行各種變動。 As shown in Fig. 2a and Fig. 2b, the foamed resin sheet 3 as an expansion absorbent has a thickness T1 of 2mm to 7mm. Ideally, the upper limit of the thickness T1 is 6mm, the lower limit is 3mm, and the expansion ratio is 25%. To 45%, it is desirable that the upper limit of the expansion ratio is 40% and the lower limit is 30%. In addition, the length L1 of the foamed resin sheet 3 is the same as or substantially the same as the circumferential length of the outer peripheral surface 2a of the core 2. Therefore, the length L1 of the foamed resin sheet 3 corresponds to the circumferential length of the outer peripheral surface 2a of the core 2. In addition, tape bodies 5 are attached to both ends of the foamed resin sheet 3 in the longitudinal direction, respectively, and the tape bodies 5 are made of resin or the like having adhesive surfaces or bonding surfaces on both sides. In this case, it is sufficient that the tape body 5 is pasted on at least both ends of the foamed resin sheet 3 in the longitudinal direction. Therefore, one or more tape bodies may be further pasted in the middle part of the length direction, or on the entire surface (all Area) A piece of tape body can be pasted on the area, and various changes can be made.

此發泡樹脂薄片3係被固定成藉由膠帶體5捲繞於卷芯2的周圍之狀態(參照圖1)。因此，發泡樹脂薄片3被黏貼成無法從卷芯2的外周面2a解開捲繞。又，發泡樹脂薄片3是在長度方向的兩端部相對接之狀態下固定於卷芯2的周圍。在此情況，發泡樹脂薄片3的長度方向兩端部之對接部6係密接為佳，但亦可存在有稍許的間隙。此情況的間隙係對周方向呈0.1mm至3mm為 佳。 The foamed resin sheet 3 is fixed in a state of being wound around the core 2 by the tape body 5 (refer to FIG. 1). Therefore, the foamed resin sheet 3 is stuck so that it cannot be unwound from the outer peripheral surface 2a of the core 2. In addition, the foamed resin sheet 3 is fixed to the periphery of the core 2 in a state where both ends in the longitudinal direction are opposed to each other. In this case, it is preferable that the butting portions 6 at both ends in the longitudinal direction of the foamed resin sheet 3 are in close contact, but there may be a slight gap. The gap in this case is 0.1mm to 3mm in the circumferential direction. good.

作為膨脹吸收材3，除了前述發泡樹脂薄片以外，亦可為以聚丙烯、聚氯乙烯等為材料之緩衝材或吸震材，但需要具有可發揮膨脹吸收功能的程度之厚度、發泡倍率等的特性。 As the expansion absorbent material 3, in addition to the aforementioned foamed resin sheet, it can also be a cushioning material or shock-absorbing material made of polypropylene, polyvinyl chloride, etc., but it needs to have a thickness and expansion ratio that can exert the expansion and absorption function. And other characteristics.

膨脹吸收材3的寬度方向尺寸(與卷芯2的軸心平行之方向的尺寸)，在本實施形態，是100mm以上，但，其中，理想為300mm以上，更理想為500mm以上，最理想為1000mm以上。 The dimension in the width direction of the swellable absorbent material 3 (the dimension in the direction parallel to the axis of the core 2) is 100 mm or more in this embodiment, but among them, it is preferably 300 mm or more, more preferably 500 mm or more, and most preferably Above 1000mm.

再者，卷芯2的材料未特別限定，例如可使用鋁合金、不銹鋼、錳鋼、碳鋼等的金屬，酚樹脂、尿素樹脂、三聚氰胺樹脂、不飽和聚酯樹脂、環氧樹脂、聚胺甲酸乙酯、鄰苯二甲酸二烯丙酯樹脂等的熱硬化性樹脂，聚乙烯、聚丙烯、聚苯乙烯、AS樹脂、ABS樹脂、異丁烯樹脂、氯乙烯樹脂等的熱可塑性樹脂，或對這些熱硬化性樹脂、熱可塑性樹脂等混合玻璃纖維、碳纖維等的強化纖維之強化塑膠等。在本實施形態，使用氯乙烯。 Furthermore, the material of the core 2 is not particularly limited. For example, metals such as aluminum alloy, stainless steel, manganese steel, carbon steel, phenol resin, urea resin, melamine resin, unsaturated polyester resin, epoxy resin, and polyamine can be used. Thermosetting resins such as ethyl formate and diallyl phthalate resin, thermoplastic resins such as polyethylene, polypropylene, polystyrene, AS resin, ABS resin, isobutylene resin, and vinyl chloride resin, or These thermosetting resins, thermoplastic resins, and other reinforced plastics mixed with reinforced fibers such as glass fibers and carbon fibers. In this embodiment, vinyl chloride is used.

圖3係顯示玻璃卷1的複合卷芯4之周邊構造的概略斜視圖，圖4係顯示玻璃卷1的全體構造之概略側面圖。如這些圖所示，在複合卷芯4的膨脹吸收材3，開始捲繞側之導引帶(以下稱為開始捲繞側導引帶)7之起始端部7a係藉由以單面具有黏貼面或接著面的樹脂等所構成之膠帶體8加以固定。在此開始捲繞側導引帶7的終端部7b，玻璃薄膜9的起始端部9a被與前述相同結構 之一對膠帶體10固定，藉此，形成為玻璃薄膜9連結於開始捲繞側導引帶7之狀態。又，在玻璃薄膜9的終端部9b，捲繞結束側的導引帶(以下稱為捲繞結束側導引帶)11的起始端部11a被與前述相同結構之一對膠帶體12固定，藉此，形成為捲繞結束側導引帶11連結於玻璃薄膜9之狀態。 3 is a schematic perspective view showing the peripheral structure of the composite core 4 of the glass roll 1, and FIG. 4 is a schematic side view showing the overall structure of the glass roll 1. As shown in these figures, in the expanded absorbent material 3 of the composite core 4, the start end 7a of the guide belt on the start winding side (hereinafter referred to as the start winding side guide belt) 7 is formed by having a single side The adhesive surface or the adhesive tape body 8 composed of resin or the like is fixed. Here, the end portion 7b of the side guide tape 7 is wound, and the start end portion 9a of the glass film 9 has the same structure as described above. One of the pair of tape bodies 10 is fixed, thereby forming a state in which the glass film 9 is connected to the guide belt 7 at the start of winding. In addition, at the end portion 9b of the glass film 9, the start end portion 11a of the guide tape 11 on the winding end side (hereinafter referred to as the winding end side guide tape) 11 is fixed by a pair of tape bodies 12 with the same structure as described above, As a result, the winding end side guide tape 11 is connected to the glass film 9.

且，保護薄片13的起始端部13a被與前述相同結構之一對膠帶體14固定在複合卷芯4的膨脹吸收材3。再者，保護薄片13係在覆蓋超過開始捲繞側導引帶7的起始端部7a的狀態下固定於膨脹吸收材3，但，亦可為保護薄片13的起始端部13a與開始捲繞側導引帶7的起始端部7a在相同部位，分別藉由膠帶體8、14固定於膨脹吸收材3。無論在何種情況，保護薄片13的起始端部13a與開始捲繞側導引帶7的起始端部7a是在膨脹吸收材3的長度方向兩端部之除了對接部6以外的部分，藉由膠帶體8、14固定著。 In addition, the starting end portion 13a of the protective sheet 13 is fixed to the expansion absorbent material 3 of the composite core 4 by a pair of tape bodies 14 having the same structure as described above. Furthermore, the protective sheet 13 is fixed to the swelling absorbent material 3 while covering the start end 7a of the guide belt 7 at the start of winding. However, it may be the start end 13a of the protective sheet 13 and the start of winding The starting end 7a of the side guide belt 7 is at the same position, and is fixed to the expansion-absorbent material 3 by the tape bodies 8, 14 respectively. In any case, the starting end 13a of the protective sheet 13 and the starting end 7a of the guide belt 7 at the start of winding are at both ends of the lengthwise direction of the swelling absorbent material 3 except for the butt joint 6, by It is fixed by tape bodies 8, 14.

在此，玻璃薄膜9係例如藉由溢流下拉法等的下拉法、浮子法等加以成形。玻璃薄膜9的厚度，理想為300μm以下，更理想為200μm以下，更加理想為100μm以下，最理想50μm以下。另外，玻璃薄膜9的厚度，理想為1μm以上，更理想為10μm以上。又，玻璃薄膜9的寬度方向尺寸，在本實施形態，是100mm以上，但，其中，理想為300mm以上，更理想為500mm以上，最理想為1000mm以上。 Here, the glass film 9 is formed by, for example, a down-draw method such as an overflow down-draw method, a float method, or the like. The thickness of the glass film 9 is desirably 300 μm or less, more desirably 200 μm or less, still more desirably 100 μm or less, and most desirably 50 μm or less. In addition, the thickness of the glass film 9 is desirably 1 μm or more, and more desirably 10 μm or more. In addition, the width direction dimension of the glass film 9 is 100 mm or more in this embodiment, but among them, it is preferably 300 mm or more, more preferably 500 mm or more, and most preferably 1000 mm or more.

開始捲繞側導引帶7及捲繞結束側導引帶11的厚度、寬度等未特別限定，但，理想為具有與玻璃薄膜9相同程度的厚度、寬度等。具體而言，這些導引帶7、11之厚度理想為1μm至200μm，又，寬度方向尺寸在本實施形態，為100mm以上，其中，理想為300mm以上，更理想為500mm以上，最理想為1000mm以上。又，這些導引帶7、11的長度，理想為1m至50m。在使用樹脂薄膜作為這些導引帶7、11之情況，可使用例如聚對苯二甲酸乙二醇酯薄膜、離子性聚合物薄膜、聚乙烯薄膜、聚丙烯薄膜、聚氯乙烯薄膜、聚偏二氯乙烯薄膜、聚乙烯醇薄膜、聚酯薄膜、聚碳酸酯薄膜、聚苯乙烯薄膜、聚丙烯腈薄膜、乙烯-乙酸乙烯酯共聚物薄膜、乙烯-乙烯醇共聚物薄膜、乙烯-甲基丙烯酸共聚物薄膜、耐綸(登錄商標)薄膜(聚醯胺薄膜)、聚醯亞胺薄膜、賽璐玢等的有機樹脂薄膜(合成樹脂薄膜)等。又，在使用金屬薄膜作為這些導引帶7、11的情況，可使用例如鋁、銅等。 The thickness, width, etc. of the winding start-side guide belt 7 and the winding end-side guide belt 11 are not particularly limited, but it is desirable to have the same thickness and width as the glass film 9. Specifically, the thickness of these guide belts 7, 11 is desirably 1 μm to 200 μm, and the width direction dimension is 100 mm or more in this embodiment, among them, it is desirably 300 mm or more, more desirably 500 mm or more, and most desirably 1000 mm the above. In addition, the length of these guide belts 7, 11 is desirably 1m to 50m. In the case of using resin films as these guide belts 7, 11, for example, polyethylene terephthalate film, ionic polymer film, polyethylene film, polypropylene film, polyvinyl chloride film, poly Dichloroethylene film, polyvinyl alcohol film, polyester film, polycarbonate film, polystyrene film, polyacrylonitrile film, ethylene-vinyl acetate copolymer film, ethylene-vinyl alcohol copolymer film, ethylene-methyl Organic resin film (synthetic resin film) such as acrylic copolymer film, nylon (registered trademark) film (polyamide film), polyimide film, cellophane, etc. Moreover, when metal thin films are used as these guide tapes 7, 11, aluminum, copper, etc. can be used, for example.

保護薄片13的厚度係1000μm以下或500μm以下或300μm以下，且10μm以上或20μm以上。又，保護薄片13的寬度方向尺寸，在本實施形態，是100mm以上，但，其中，理想為300mm以上，更理想為500mm以上，最理想為1000mm以上。在此情況，作為保護薄片13，可使用例如聚對苯二甲酸乙二醇酯薄膜、離子性聚合物薄膜、聚乙烯薄膜、聚丙烯薄膜、聚氯乙烯薄膜、聚偏二氯乙烯薄膜、聚乙烯醇薄膜、聚酯薄膜、聚碳酸酯薄 膜、聚苯乙烯薄膜、聚丙烯腈薄膜、乙烯-乙酸乙烯酯共聚物薄膜、乙烯-乙烯醇共聚物薄膜、乙烯-甲基丙烯酸共聚物薄膜、耐綸(登錄商標)薄膜(聚醯胺薄膜)、聚醯亞胺薄膜、賽璐玢等的有機樹脂薄膜(合成樹脂薄膜)等。 The thickness of the protective sheet 13 is 1000 μm or less, 500 μm or less, or 300 μm or less, and 10 μm or more or 20 μm or more. In addition, the width direction dimension of the protective sheet 13 is 100 mm or more in this embodiment, but among them, it is preferably 300 mm or more, more preferably 500 mm or more, and most preferably 1000 mm or more. In this case, as the protective sheet 13, for example, polyethylene terephthalate film, ionic polymer film, polyethylene film, polypropylene film, polyvinyl chloride film, polyvinylidene chloride film, poly Vinyl alcohol film, polyester film, polycarbonate film Film, polystyrene film, polyacrylonitrile film, ethylene-vinyl acetate copolymer film, ethylene-vinyl alcohol copolymer film, ethylene-methacrylic acid copolymer film, nylon (registered trademark) film (polyamide film) ), polyimide film, organic resin film (synthetic resin film) such as cellophane, etc.

圖5係詳細地顯示玻璃卷1的局部之縱斷正面圖。再者，該圖係僅圖示玻璃卷1的寬度方向之一端部，但玻璃卷1的寬度方向之另一端部也為相同結構。如該圖所示，玻璃卷1係在複合卷芯4的膨脹吸收材3的周圍捲繞有玻璃薄膜9及保護薄片13，前述玻璃薄膜9是連結有開始捲繞側導引帶7及捲繞結束側導引帶11，前述保護薄片13是以未與玻璃薄膜9接著的方式重疊於玻璃薄膜9，在卷芯2的兩端部固定有凸緣15。 FIG. 5 is a longitudinal front view showing a part of the glass roll 1 in detail. In addition, this figure shows only one end part of the width direction of the glass roll 1, but the other end part of the width direction of the glass roll 1 also has the same structure. As shown in the figure, the glass roll 1 is wound with a glass film 9 and a protective sheet 13 around the expansion absorbing material 3 of the composite roll core 4. The glass film 9 is connected with the winding start side guide belt 7 and the roll The winding end side guide belt 11 is overlapped with the glass film 9 so that the protective sheet 13 is not bonded to the glass film 9, and flanges 15 are fixed to both ends of the winding core 2.

又，膨脹吸收材3的寬度方向兩端部3x係從開始捲繞側導引帶7及捲繞結束側導引帶11各自的寬度方向兩端部7x、11x突出，並且亦從玻璃薄膜9的寬度方向兩端部9x突出。相對於此，保護薄片13的寬度方向兩端部13x係從開始捲繞側導引帶7、捲繞結束側導引帶11及玻璃薄膜9的各自的寬度方向兩端部7x、11x、9x突出，並且亦從膨脹吸收材3的寬度方向兩端部3x突出。再者，開始捲繞側導引帶7及捲繞結束側導引帶11與玻璃薄膜9之寬度方向尺寸是相同或大致相同為佳。 In addition, the widthwise end portions 3x of the expansion absorbent material 3 protrude from the widthwise end portions 7x and 11x of the winding start side guide belt 7 and the winding end side guide belt 11, and also protrude from the glass film 9 Both ends 9x in the width direction protrude. In contrast, the width direction end portions 13x of the protective sheet 13 are the respective width direction end portions 7x, 11x, 9x of the guide tape 7 on the winding start side, the guide tape 11 on the winding end side, and the glass film 9 It protrudes, and also protrudes from both end portions 3x in the width direction of the expansion absorbent material 3. Furthermore, it is preferable that the widthwise dimensions of the guide tape 7 at the start of the winding and the guide tape 11 at the end of the winding and the glass film 9 in the width direction are the same or substantially the same.

在此情況，膨脹吸收材3的寬度方向兩端部3x係在相同部位與玻璃薄膜9的寬度方向兩端部9x一致 即可，或若只有稍許的程度，玻璃薄膜9的寬度方向兩端部9x可從膨脹吸收材3的寬度方向兩端部3x突出。又，開始捲繞側導引帶7及捲繞結束側導引帶11各自的寬度方向兩端部7x、11x也係在相同部位與膨脹吸收材3的寬度方向兩端部3x一致即可，或若只有稍許的程度，開始捲繞側導引帶7及捲繞結束側導引帶11各自的寬度方向兩端部7x、11x可從膨脹吸收材3的寬度方向兩端部3x突出。再者，在圖示的例子中，保護薄片13的寬度方向兩端部13x未與凸緣15接觸，但雙方亦可接觸。又，在圖示的例子中，膨脹吸收材3的寬度方向兩端部3x未與凸緣15接觸，但雙方亦可接觸。如此，在使雙方接觸之情況，膨脹吸收材3的寬度方向兩端部3x可從保護薄片13的寬度方向兩端部13x突出。 In this case, both ends 3x in the width direction of the swelling absorbent material 3 are in the same position and coincide with the ends 9x in the width direction of the glass film 9 That is, or if only to a small extent, the widthwise end portions 9x of the glass film 9 may protrude from the widthwise end portions 3x of the expansion absorbent material 3. In addition, the width direction end portions 7x and 11x of each of the winding start side guide tape 7 and the winding end side guide tape 11 may also be tied at the same location to coincide with the width direction end portions 3x of the expansion absorbent material 3. Or if it is only slightly, the widthwise end portions 7x and 11x of the winding start side guide belt 7 and the winding end side guide belt 11 may protrude from the widthwise end portions 3x of the expansion absorbent material 3. Furthermore, in the example shown in the figure, the widthwise end portions 13x of the protective sheet 13 are not in contact with the flange 15, but both may be in contact. In addition, in the example shown in the figure, the widthwise end portions 3x of the swelling absorbent material 3 are not in contact with the flange 15, but both may be in contact. In this way, when the two sides are brought into contact, the widthwise end portions 3x of the expansion absorbent material 3 can protrude from the widthwise end portions 13x of the protective sheet 13.

且，膨脹吸收材3的厚度T1為，開始捲繞側導引帶7及捲繞結束側導引帶11各自的厚度T2之20倍至140倍，更理想為30倍至130倍，最理想為40倍至120倍。再者，膨脹吸收材3的厚度T1和玻璃薄膜9的厚度T3之關係亦與此相同。又，膨脹吸收材3的厚度T1作成為保護薄片13的寬度T4之20倍至140倍，更理想為50倍至130倍，最理想為60倍至120倍。 In addition, the thickness T1 of the swelling absorbent material 3 is 20 to 140 times, more preferably 30 to 130 times, the thickness T2 of each of the winding start side guide tape 7 and the winding end guide tape 11 From 40 times to 120 times. In addition, the relationship between the thickness T1 of the expansion-absorbent material 3 and the thickness T3 of the glass film 9 is also the same. In addition, the thickness T1 of the swelling absorbent material 3 is 20 times to 140 times the width T4 of the protective sheet 13, more desirably 50 times to 130 times, and most desirably 60 times to 120 times.

若依據具備以上這種結構之玻璃卷1的話，即使因玻璃卷1的溫度上升，卷芯2的直徑增大，由於玻璃薄膜9是捲繞於複合卷芯4的構成要件亦即膨脹吸收材3外周側，故，卷芯2的直徑之增大會被膨脹吸收材3所 吸收，對玻璃薄膜9不會造成太大的影響。換言之，在卷芯2的直徑增大之情況，即使玻璃薄膜9未追隨該增大而延伸，藉由膨脹吸收材3的膨脹吸收功能，過度的拉引應力也變得不會作用於玻璃薄膜9。其結果，可有效地迴避玻璃薄膜9產生破損，能夠維持作為良品之玻璃卷1。且，在使用厚度2mm至7mm且發泡倍率為25%至45%的發泡樹脂薄片作為膨脹吸收材3之情況，能夠發揮充分的膨脹吸收功能。 According to the glass roll 1 with the above-mentioned structure, even if the temperature of the glass roll 1 rises, the diameter of the core 2 increases, because the glass film 9 is wound around the composite roll core 4, which is the expansion absorbent material. 3 The outer peripheral side, therefore, the increase in the diameter of the core 2 will be affected by the expansion absorbent 3 Absorption does not cause much influence on the glass film 9. In other words, when the diameter of the core 2 increases, even if the glass film 9 does not follow the increase and stretches, due to the expansion absorption function of the expansion absorbent 3, excessive tensile stresses will not act on the glass film 9. As a result, the breakage of the glass film 9 can be effectively avoided, and the glass roll 1 which is a good product can be maintained. In addition, when a foamed resin sheet having a thickness of 2 mm to 7 mm and an expansion ratio of 25% to 45% is used as the expansion absorption material 3, a sufficient expansion absorption function can be exerted.

並且，膨脹吸收材3係具有與卷芯2的外周面2a的周方向全長相對應之長度且在周方向的端部彼此對接的狀態下固定安裝於卷芯2的周圍，故，能夠防止膨脹吸收材3在周方向重疊而形成階差之情況。藉此，在捲繞於複合卷芯4的周圍之玻璃薄膜9，變得不易產生不適當的變形、不適當的彎曲應力等，玻璃薄膜9可圓滑地捲繞於複合卷芯4的周圍。藉此，可更進一步確實地阻止因伴隨溫度上升之卷芯2的直徑增大所引起之玻璃薄膜9的破損。 In addition, the swelling absorbent material 3 has a length corresponding to the full length of the outer peripheral surface 2a of the core 2 in the circumferential direction, and is fixedly attached to the periphery of the core 2 with the ends in the circumferential direction butting against each other, so that expansion can be prevented. The case where the absorbent material 3 overlaps in the circumferential direction to form a step. As a result, the glass film 9 wound around the composite winding core 4 is less likely to be deformed, undue bending stress, etc., and the glass film 9 can be smoothly wound around the composite winding core 4. Thereby, the damage of the glass film 9 caused by the increase in the diameter of the core 2 accompanying the temperature rise can be prevented more reliably.

又，此玻璃卷1係開始捲繞側導引帶7及保護薄片13捲繞於玻璃薄膜9的內層側，但此開始捲繞側導引帶7及保護薄片13的材質、厚度等與膨脹吸收材3大大地不同，無法如膨脹吸收材3一樣發揮膨脹吸收功能。因此，防止伴隨前述溫度上升所造成的玻璃薄膜9之破損是藉由膨脹吸收材3的膨脹吸收功能來防止的。 In addition, the glass roll 1 is wound on the inner side of the glass film 9 with the guide tape 7 and the protective sheet 13 at the start of the winding, but the material, thickness, etc. of the guide tape 7 and the protective sheet 13 at the start of the winding The swelling absorbing material 3 is very different and cannot perform the swelling absorption function like the swelling absorbing material 3. Therefore, the prevention of the damage of the glass film 9 caused by the aforementioned temperature increase is prevented by the expansion absorption function of the expansion absorption material 3.

且，此玻璃卷1(圖5所示的例子)係膨脹吸 收材3的寬度方向兩端部3x從玻璃薄膜9的寬度方向兩端部9x突出，因此，在玻璃薄膜9的內層側的寬度方向全長範圍存在有膨脹吸收材3。因此，可獲得穩定的捲繞狀態，並且對玻璃薄膜9，可發揮寬度方向全區域範圍之均等的膨脹吸收功能。 And, this glass roll 1 (the example shown in Figure 5) is expanded and sucked The widthwise end portions 3x of the collected material 3 protrude from the widthwise end portions 9x of the glass film 9, and therefore, the expansion absorbing material 3 is present in the entire width direction of the inner layer side of the glass film 9. Therefore, a stable winding state can be obtained, and the glass film 9 can exhibit an even expansion absorption function over the entire width direction.

且，此玻璃卷1(圖5所示的例子)係膨脹吸收材3的寬度方向兩端部3x從開始捲繞側導引帶7的寬度方向兩端部7x突出，因此，在開始捲繞側導引帶7的內層側，於其寬度方向全長範圍存在有膨脹吸收材3。藉此，亦可獲得穩定的捲繞狀態，並且對開始捲繞側導引帶7進而對玻璃薄膜9，可發揮寬度方向全區域範圍之均等的膨脹吸收效果。 In addition, this glass roll 1 (the example shown in FIG. 5) is the widthwise end portions 3x of the expanded absorbent material 3 protruding from the widthwise end portions 7x of the guide belt 7 on the start winding side. On the inner layer side of the side guide belt 7, the swelling absorbent material 3 exists over the entire width direction. Thereby, a stable winding state can also be obtained, and with respect to the guide belt 7 at the start of winding and further to the glass film 9, it is possible to exhibit an equal expansion absorption effect across the entire width direction.

並且，此玻璃卷1(圖5所示的例子)係保護薄片13的寬度方向兩端部13x從膨脹吸收材3、導引帶7、11及保護薄片13的寬度方向兩端部3x、7x、11x、13x突出，因此，即使因輸送時的振動、碰撞等造成玻璃薄膜9對凸緣15相對地接近移動，最先也是保護薄片13與凸緣15接觸，故，可迴避玻璃薄膜9與凸緣15之碰撞。 In addition, this glass roll 1 (the example shown in FIG. 5) is the width direction end portions 13x of the protective sheet 13 from the expansion absorbent material 3, the guide tapes 7, 11, and the width direction end portions 3x, 7x of the protective sheet 13 , 11x, 13x are protruding, so even if the glass film 9 moves relatively close to the flange 15 due to vibrations, collisions, etc. during transportation, the protective sheet 13 contacts the flange 15 first. Therefore, the glass film 9 and the flange 15 can be avoided. The collision of flange 15.

其次，說明關於具備前述結構的玻璃卷1的製造方法。此製造方法大致上具有：製作複合卷芯4的卷芯製作製程；和在之後將玻璃薄膜9捲繞於複合卷芯4的捲繞製程。 Next, the manufacturing method of the glass roll 1 provided with the said structure is demonstrated. This manufacturing method generally includes: a core manufacturing process for manufacturing the composite core 4; and a winding process for winding the glass film 9 on the composite core 4 afterwards.

在卷芯製作製程，如圖6a所示，在以長度方向兩端部3y殘留的方式將膨脹吸收材3卷掛於卷芯2的周圍之狀態下，使膨脹吸收材3收縮等，進行長度調整及位置調整。然後，如圖6b所示，以膠帶體5將膨脹吸收材3的長度方向兩端部3y黏貼於卷芯2的外周面2a。藉此，獲得膨脹吸收材3被捲繞於卷芯2的周圍之複合卷芯4。 In the core manufacturing process, as shown in Fig. 6a, the expansion absorbent material 3 is wound around the core 2 with the ends 3y remaining in the longitudinal direction. Adjustment and position adjustment. Then, as shown in FIG. 6b, the both ends 3y in the longitudinal direction of the swelling absorbent material 3 are adhered to the outer peripheral surface 2a of the core 2 with the tape body 5. Thereby, the composite core 4 in which the expansion-absorbent material 3 is wound around the core 2 is obtained.

在捲繞製程，如圖3所示，將開始捲繞側導引帶7的起始端部7a和保護薄片13的起始端部13a固定於複合卷芯4的膨脹吸收材3，且將玻璃薄膜9連結於開始捲繞側導引帶7的狀態下，使複合卷芯4繞著軸心周圍旋轉且將開始捲繞側導引帶7、保護薄片13及玻璃薄膜9呈捲筒狀捲取至複合卷芯4的周圍。然後，在玻璃薄膜9被捲取了所需長度的時間點，沿著寬度方向將玻璃薄膜9切斷，在玻璃薄膜9的切斷端部連結捲繞結束側導引帶11後再進一步捲繞，藉此獲得如圖4所示的玻璃卷1。 In the winding process, as shown in FIG. 3, the starting end 7a of the winding side guide belt 7 and the starting end 13a of the protective sheet 13 are fixed to the expansion absorbent 3 of the composite core 4, and the glass film 9 is connected to the start-winding side guide belt 7, the composite winding core 4 is rotated around the axis and the start-winding side guide belt 7, the protective sheet 13, and the glass film 9 are wound up in a roll shape To the periphery of the composite core 4. Then, when the glass film 9 is wound up to the required length, the glass film 9 is cut in the width direction, and the winding end side guide tape 11 is connected to the cut end of the glass film 9 before being further wound. Winding, thereby obtaining the glass roll 1 as shown in FIG. 4.

作為一例，此捲繞製程係可藉由下述方式進行，亦即將藉由下拉法、浮子法等之成形裝置進行成形而被連續地搬運的玻璃薄膜9(例如在搬運途中，寬度方向兩端部被以雷射切割等切除)如前述情況同樣地與保護薄片13等一同捲繞於複合卷芯4的周圍來進行。又，作為其他例子亦可藉由下述方式進行，亦即將以成形裝置成形並被連續地搬運的玻璃薄膜9捲繞於不具有膨脹吸收材的卷芯的周圍，藉此製作作為母玻璃卷之玻璃卷後，從該母 玻璃卷以卷對卷(roll to roll)的方式，與前述情況同樣地將玻璃薄膜9與保護薄片13等一同捲繞於複合卷芯4的周圍來進行 As an example, this winding process can be carried out in the following manner, that is, the glass film 9 that is continuously conveyed by forming by a forming device such as a down-draw method, a float method, etc. (for example, during conveyance, both ends in the width direction The part is cut by laser cutting etc.) It is wound around the composite winding core 4 together with the protective sheet 13 etc. as in the above-mentioned case. In addition, as another example, it can also be performed in the following manner, that is, the glass film 9 that is formed by a forming device and is continuously conveyed is wound around a core that does not have an expansion absorbing material to produce a mother glass roll After the glass roll, from the mother The glass roll is roll-to-roll, and the glass film 9 is wound around the composite roll core 4 with the protective sheet 13 and the like in the same manner as in the previous case.

圖7a及圖7b係顯示複合卷芯4及卷芯製作製程的變形例之概略側面圖。此複合卷芯4係將層積構造的膨脹吸收材3纏繞於卷芯2的周圍者，前述層積構造的膨脹吸收材3是將複數片薄片材(在圖示例中為3片的發泡樹脂薄片)3b、3c、3d黏貼所構成。又，複數片薄片材3b、3c、3d的總厚度是與前述發泡樹脂薄片3的厚度T1相同。再者，此變形例係僅將膨脹吸收材3作成層積構造的這一點與前述如圖6a及圖6b所示的複合卷芯4及卷芯製作製程不同，因此，關於其他共通的構成要件賦予相同圖號並省略其說明。若依據此變形例，具有以下優點，亦即，即使一片的薄片材3b、3c、3d各自的厚度上有參差不齊，藉由將這些薄片材作成層積構造，能夠減低厚度的參差不齊。 7a and 7b are schematic side views showing a modification of the composite core 4 and the core manufacturing process. This composite roll core 4 is a layered structure of the expansion absorbent material 3 wound around the core 2, the aforementioned laminated structure of the expansion absorbent material 3 is a plurality of sheets (in the example of the figure, three sheets of hair Foam resin sheet) 3b, 3c, 3d paste. In addition, the total thickness of the plurality of sheets 3b, 3c, and 3d is the same as the thickness T1 of the foamed resin sheet 3 described above. Furthermore, this modification is different from the composite core 4 and core manufacturing process shown in FIGS. 6a and 6b only in that the expansion absorbent material 3 is made into a laminated structure. Therefore, regarding other common constituent elements The same figure numbers are assigned and their description is omitted. According to this modified example, there is an advantage that even if the thickness of a single sheet material 3b, 3c, 3d is uneven, the thickness unevenness can be reduced by forming these sheet materials in a laminated structure .

圖8係顯示開始捲繞側導引帶7及保護薄片13對複合卷芯4之安裝構造的變形例之概略斜視圖，圖9係顯示該變形例的玻璃卷1之概略側面圖。如這些圖所示，開始捲繞側導引帶7的起始端部7a固定於複合卷芯4的膨脹吸收材3，在此開始捲繞側導引帶7的長度方向中間部(開始捲繞側導引帶7之靠近終端部7b側之部位)，藉由膠帶體14固定有保護薄片13的起始端部13a。其他的構成要件是與前述圖3及圖4所示的玻璃卷 1相同，因此關於兩者共通的構成要件賦予相同圖號並省略其說明。若依據此變形例，具有以下優點，亦即可將保護薄片13作成短條帶狀，故，可削減其使用量而能夠減低成本。 Fig. 8 is a schematic perspective view showing a modification of the installation structure of the guide tape 7 and the protective sheet 13 on the winding start side to the composite core 4, and Fig. 9 is a schematic side view of the glass roll 1 of this modification. As shown in these figures, the start end 7a of the start-winding side guide belt 7 is fixed to the expanded absorbent material 3 of the composite core 4, and the middle part of the longitudinal direction of the start-winding side guide belt 7 (starts winding The part of the side guide belt 7 near the end portion 7b) is fixed with the starting end portion 13a of the protective sheet 13 by the tape body 14. Other structural elements are the same as the glass roll shown in Figures 3 and 4 above. 1 is the same, therefore, the same drawing numbers are assigned to the components common to both, and the description thereof is omitted. According to this modified example, there is an advantage that the protective sheet 13 can be made into a short strip shape. Therefore, the usage amount can be reduced and the cost can be reduced.

再者，在以上的實施形態，保護薄片13以未與玻璃薄膜9接著的方式捲繞於複合卷芯4的周圍，但，亦可取代此結構，將保護薄片13作為層積薄膜黏貼於玻璃薄膜9的狀態下再捲繞於複合卷芯4的周圍。又，在此情況，亦可於黏貼有層積薄膜的玻璃薄膜9，不同體的保護薄片以未接著的方式重疊之狀態下捲繞於複合卷芯4的周圍。 Furthermore, in the above embodiment, the protective sheet 13 is wound around the composite core 4 without being bonded to the glass film 9. However, instead of this structure, the protective sheet 13 may be attached to the glass as a laminated film. The film 9 is wound around the composite core 4 again. Also, in this case, the glass film 9 to which the laminated film is attached may be wound around the composite winding core 4 in a state where different protective sheets are overlapped without being adhered.

又，在以上的實施形態，複合卷芯4的膨脹吸收材3為長度方向兩端部對接之狀態，但，亦可為其長度方向兩端部重疊的狀態下纏繞於卷芯2的周圍。在此情況，為了阻止在膨脹吸收材3的外周面產生大的階差，理想為將膨脹吸收材3的最外層之端面形成為厚度隨著朝終端側移行逐漸變小。 In addition, in the above embodiment, the expanded absorbent material 3 of the composite core 4 is in a state where both ends in the longitudinal direction are butted, but it may be wound around the core 2 in a state where both ends in the longitudinal direction overlap. In this case, in order to prevent a large step difference from being generated on the outer peripheral surface of the swelling absorbent material 3, it is desirable to form the end surface of the outermost layer of the swelling absorbent material 3 so that the thickness gradually decreases as it moves to the terminal side.

且，在以上的實施形態，使用發泡樹脂薄片等的薄片作為複合卷芯4的膨脹吸收材3，再纏繞於卷芯2的周圍，但，亦可為將以發泡樹脂等所構成的薄片材嵌合於卷芯2再加以纏繞之結構。 Furthermore, in the above embodiment, a sheet such as a foamed resin sheet is used as the expansion absorbent 3 of the composite core 4 and then wound around the core 2, but it may be composed of foamed resin or the like. A structure in which the sheet material is inserted into the core 2 and then wound.

1‧‧‧玻璃卷 1‧‧‧Glass roll

2‧‧‧卷芯 2‧‧‧Core

2a‧‧‧外周面 2a‧‧‧Outer peripheral surface

3‧‧‧膨脹吸收材(發泡樹脂薄片) 3‧‧‧Expandable absorbent material (foamed resin sheet)

4‧‧‧複合卷芯 4‧‧‧Composite core

5‧‧‧膠帶體 5‧‧‧Tape body

6‧‧‧膨脹吸收材的對接部 6‧‧‧Butt joint of swelling absorbent material

Claims (12)

一種玻璃卷，其特徵為係在將膨脹吸收材纏繞於卷芯的周圍之複合卷芯，捲繞有重疊於保護薄片的狀態之玻璃薄膜，前述保護薄片的寬度方向兩端是從前述膨脹吸收材的寬度方向兩端突出。 A glass roll, characterized in that it is tied to a composite roll core that wraps an expansion-absorbent material around the core, and is wound with a glass film in a state of being overlapped with a protective sheet, and both ends of the protective sheet in the width direction are absorbed from the expansion Both ends protrude in the width direction of the material. 如申請專利範圍第1項之玻璃卷，其中，前述膨脹吸收材係厚度為2mm至7mm的發泡樹脂薄片。 Such as the glass roll of the first item in the scope of patent application, wherein the aforementioned expansion-absorbing material is a foamed resin sheet with a thickness of 2mm to 7mm. 如申請專利範圍第1或2項之玻璃卷，其中，前述膨脹吸收材係發泡倍率為25%至45%的發泡樹脂薄片。 For example, the glass roll of item 1 or 2 of the scope of patent application, wherein the aforementioned expansion-absorbing material is a foamed resin sheet with a foaming ratio of 25% to 45%. 如申請專利範圍第1或2項之玻璃卷，其中，前述膨脹吸收材係具有與前述卷芯的外周面之圓周方向全長相對應的長度，且在圓周方向的兩端部對接的狀態下纏繞於前述卷芯的周圍。 For example, the glass roll of item 1 or 2 of the scope of patent application, wherein the expansion-absorbent material has a length corresponding to the full length of the outer peripheral surface of the roll core in the circumferential direction, and is wound in a state where both ends in the circumferential direction are butted Around the aforementioned core. 如申請專利範圍第1或2項之玻璃卷，其中，前述玻璃薄膜係在前述玻璃薄膜連結於導引帶的狀態下，捲繞於前述複合卷芯。 For example, the glass roll of item 1 or 2 of the scope of patent application, wherein the glass film is wound on the composite roll core in a state where the glass film is connected to a guide belt. 如申請專利範圍第1或2項之玻璃卷，其中，前述玻璃薄膜係在前述玻璃薄膜重疊於保護薄片的狀態下，捲繞於前述複合卷芯。 For example, the glass roll of item 1 or 2 of the scope of patent application, wherein the glass film is wound on the composite roll core in a state where the glass film is overlapped with the protective sheet. 如申請專利範圍第1或2項之玻璃卷，其中，前述膨脹吸收材的寬度方向兩端是從前述玻璃薄膜的寬度方向兩端突出。 For example, the glass roll of item 1 or 2 of the scope of patent application, wherein the widthwise ends of the expansion-absorbing material protrude from the widthwise ends of the glass film. 如申請專利範圍第5項之玻璃卷，其中，前述膨 脹吸收材的寬度方向兩端是從前述導引帶的寬度方向兩端突出。 For example, the glass roll of item 5 of the scope of patent application, in which the aforementioned expansion Both ends in the width direction of the swelling absorbent material protrude from both ends in the width direction of the aforementioned guide belt. 如申請專利範圍第5項之玻璃卷，其中，前述導引帶的長度方向一端部是固定於前述膨脹吸收材。 For example, the glass roll of item 5 of the scope of patent application, wherein one end of the guide belt in the longitudinal direction is fixed to the expansion absorbent. 如申請專利範圍第9項之玻璃卷，其中，前述保護薄片的長度方向一端部是固定於前述導引帶。 For example, the glass roll of item 9 of the scope of patent application, wherein one end of the protective sheet in the longitudinal direction is fixed to the guide belt. 如申請專利範圍第6項之玻璃卷，其中，前述保護薄片的長度方向一端部是固定於前述膨脹吸收材。 For example, the glass roll of item 6 of the scope of patent application, wherein one end of the protective sheet in the longitudinal direction is fixed to the expansion-absorbing material. 一種玻璃卷的製造方法，其特徵為具有：製作將膨脹吸收材纏繞至卷芯的周圍之複合卷芯的卷芯製作製程；及在前述複合卷芯捲繞重疊於保護薄片的狀態之玻璃薄膜之捲繞製程，在前述捲繞製程，使前述保護薄片的寬度方向兩端從前述膨脹吸收材的寬度方向兩端突出。 A method for manufacturing a glass roll, which is characterized by having: a core manufacturing process for producing a composite core that winds an expanded absorbent material around the core; and a glass film in a state where the composite core is wound on the protective sheet In the winding process, in the winding process, both ends in the width direction of the protective sheet protrude from both ends in the width direction of the expansion absorbent.
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