JP2015205804A - Protective member-equipped plate-shaped article, and method for processing the same - Google Patents

Protective member-equipped plate-shaped article, and method for processing the same Download PDF

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Publication number
JP2015205804A
JP2015205804A JP2014088976A JP2014088976A JP2015205804A JP 2015205804 A JP2015205804 A JP 2015205804A JP 2014088976 A JP2014088976 A JP 2014088976A JP 2014088976 A JP2014088976 A JP 2014088976A JP 2015205804 A JP2015205804 A JP 2015205804A
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Prior art keywords
plate
protective
article
processing
adhesive
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Japanese (ja)
Inventor
広之 中津
Hiroyuki Nakatsu
広之 中津
久博 竹内
Hisahiro Takeuchi
久博 竹内
一伸 國友
Kazunobu Kunitomo
一伸 國友
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日本電気硝子株式会社
Nippon Electric Glass Co Ltd
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Priority to JP2014088976A priority Critical patent/JP2015205804A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/10Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00Severing cooled glass
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/50Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57Improving the yield, e-g- reduction of reject rates

Abstract

PROBLEM TO BE SOLVED: To provide a protective member-equipped plate-shaped article and a method for processing the same, by which the occurrence of defects in the plate-shaped article is suppressed and productivity is improved.SOLUTION: A plate-shaped article processing method comprises: a protective article-preparing step for detachably adhering a sheet-shaped protective member to at least one main surface of a plate-shaped article via an adhesive, to obtain a protective member-equipped plate-shaped article in which a lateral end surface of the plate-shaped article to which the protective member has been adhered and a lateral end surface of the protective member are substantially flush with each other; and an end surface processing step for mechanically processing the end surface of the protective member-equipped plate-shaped article. The protective article-preparing step comprises: an adhering step for adhering the protective member to the surface of the plate-shaped article, the protective member having adhesives arranged in laminate; and a cutting step for cutting the plate-shaped article together with the protective member. The end surface processing step comprises polishing a cut surface. Preferably the method comprises a peeling step for peeling the protective member off the plate-shaped article after the end surface processing step.

Description

本発明は、ガラス板等の板状物品に表面を保護する樹脂等の保護部材を備えて成る保護部材付板状物品、および板状物品の加工方法に関する。   The present invention relates to a plate-like article with a protective member comprising a plate-like article such as a glass plate provided with a protective member such as a resin for protecting the surface, and a method for processing the plate-like article.
従来、ディスプレイパネル、タッチパネル、面照明パネル、光電変換パネル、窓ガラスなどの電子機器に用いられるガラス板は、一般的に、大判のガラス板(所謂、マザーガラス)を個片に切り出し、切断面(端面)を研磨加工することによって生産されている。   Conventionally, glass plates used for electronic devices such as display panels, touch panels, surface illumination panels, photoelectric conversion panels, and window glass are generally cut into large pieces of glass plates (so-called mother glass) and cut surfaces. It is produced by polishing (end face).
上述のようにしてガラスの端面加工をする際には、ガラス粉等が発生してガラス板を傷つけるおそれがある。このような問題を解決すべく、例えば特許文献1には、端面部分を加工装置に備えられたカバーで覆った状態で加工する技術が開示されている。   When processing the end face of the glass as described above, glass powder or the like may be generated and the glass plate may be damaged. In order to solve such a problem, for example, Patent Document 1 discloses a technique of processing in a state where an end surface portion is covered with a cover provided in a processing apparatus.
特表2013−532071号公報Special table 2013-532071 gazette
しかしながら、特許文献1の技術では、カバー内に位置するガラス表面を保護できず、欠陥の発生を十分に抑制できないという問題があった。また、カバー等の部材が必要となるため、装置が大掛かりなものとなり、既存の加工装置を流用することが困難であった。   However, the technique of Patent Document 1 has a problem that the glass surface located in the cover cannot be protected, and the occurrence of defects cannot be sufficiently suppressed. In addition, since a member such as a cover is required, the apparatus becomes large and it is difficult to divert the existing processing apparatus.
本発明は、このような事情を考慮して成されたものであり、容易に板状物品の欠陥の発生を抑制し、生産性を向上可能とする保護部材付板状物品、および板状物品の加工方法を提供することを課題とする。   The present invention has been made in view of such circumstances, and a plate-like article with a protective member that can easily suppress the occurrence of defects in the plate-like article and improve productivity, and the plate-like article. It is an object to provide a processing method.
本発明の板状物品の加工方法は、板状物品の少なくとも一方主面にシート状の保護部材が粘着剤を介して剥離可能に貼り付けられ且つ、貼り付けられた保護部材の側方端面と板状物品との側方端面とが略面一となる保護部材付板状物品を得る保護物品準備工程と、保護部材付板状物品の端面を機械加工する端面加工工程とを備えることを特徴とする。   In the processing method for a plate-shaped article of the present invention, a sheet-like protective member is detachably attached to at least one main surface of the plate-like article via an adhesive, and the side end face of the attached protective member is A protective article preparation step for obtaining a plate-like article with a protective member that is substantially flush with a side end surface of the plate-like article, and an end face processing step for machining the end face of the plate-like article with a protective member are provided. And
本発明の板状物品の加工方法において、保護物品準備工程は、粘着剤が層状に設けられた保護部材を、板状物品の表面に貼り付ける貼付工程と、保護部材とともに板状物品を切断する切断工程とを含み、端面加工工程において、切断面を研磨加工し、端面加工工程後に保護部材を板状物品から剥離する剥離工程をさらに備えることが好ましい。   In the processing method of the plate-shaped article of the present invention, the protective article preparation step includes cutting the plate-shaped article together with the sticking step of attaching the protective member provided with the adhesive in layers to the surface of the plate-shaped article, and the protective member. It is preferable to further include a peeling step of polishing the cut surface in the end face processing step and peeling the protective member from the plate-shaped article after the end face processing step.
本発明の板状物品の加工方法において、粘着剤の粘着力が、JISZ0237に準拠して測定した場合に0.7〜2.5(N/25mm)であることが好ましい。   In the processing method of the plate-shaped article of the present invention, the adhesive strength of the adhesive is preferably 0.7 to 2.5 (N / 25 mm) when measured in accordance with JISZ0237.
本発明の板状物品の加工方法において、板状物品の厚さをα(mm)、保護部材の厚さをβ(mm)、JISZ0237に準拠して測定した粘着剤の粘着力をγ(N/25mm)、とした場合に下式(X)を満たすことが好ましい。
0.19≦(α−β)/γ≦0.74 …(X)
In the processing method for a plate-shaped article of the present invention, the thickness of the plate-shaped article is α (mm), the thickness of the protective member is β (mm), and the adhesive strength of the adhesive measured according to JISZ0237 is γ (N / 25 mm), the following formula (X) is preferably satisfied.
0.19 ≦ (α−β) /γ≦0.74 (X)
本発明の板状物品の加工方法において、板状物品は厚さ0.1〜1.0(mm)の強化ガラスであり、保護部材は厚さ0.005〜0.03(mm)のオレフィン系樹脂であり、 粘着剤はアクリル系粘着剤であることが好ましい。   In the processing method of the plate-shaped article of the present invention, the plate-shaped article is a tempered glass having a thickness of 0.1 to 1.0 (mm), and the protective member is an olefin having a thickness of 0.005 to 0.03 (mm). The pressure-sensitive adhesive is preferably an acrylic pressure-sensitive adhesive.
本発明の保護部材付板状物品は、板状物品と、板状物品の少なくとも一方主面に、側方端面が略面一となるよう、粘着剤を介して貼り付けられたシート状の保護部材とを備えた保護部材付板状物品であって、JISZ0237に準拠して測定した粘着剤の粘着力が0.7〜2.5(N/25mm)であることを特徴とする。   The plate-like article with a protective member of the present invention is a sheet-like article and a sheet-like protection adhered to at least one main surface of the plate-like article with an adhesive so that the side end faces are substantially flush. A plate-like article with a protective member provided with a member, wherein the adhesive strength of the adhesive measured in accordance with JISZ0237 is 0.7 to 2.5 (N / 25 mm).
本発明の保護部材付板状物品は、板状物品の厚さをα(mm)、保護部材の厚さをβ(mm)、JISZ0237に準拠して測定した粘着剤の粘着力をγ(N/25mm)、とした場合に下式(X)を満たすことが好ましい。
0.19≦(α−β)/γ≦0.74 …(X)
The plate-like article with a protective member of the present invention has a thickness of the plate-like article of α (mm), a thickness of the protective member of β (mm), and the adhesive strength of the adhesive measured according to JISZ0237 as γ (N / 25 mm), the following formula (X) is preferably satisfied.
0.19 ≦ (α−β) /γ≦0.74 (X)
本発明の板状物品の加工方法および保護部材付板状物品によれば、機械加工時に保護部材によって板状物品の主面が保護されるため、加工時における板状物品の主面の汚れや損傷を容易且つ好適に抑制できる。すなわち、板状物品の生産性を向上できる。   According to the processing method for a plate-shaped article and the plate-shaped article with a protective member of the present invention, the main surface of the plate-shaped article is protected by the protective member during machining. Damage can be easily and suitably suppressed. That is, the productivity of the plate-like article can be improved.
本発明の実施形態に係る保護部材付板状物品1の端面を加工する様子を示す図The figure which shows a mode that the end surface of the plate-shaped article 1 with a protection member which concerns on embodiment of this invention is processed.
以下、本発明の実施形態の保護部材付板状物品1、および板状物品の加工方法について説明する。   Hereinafter, the plate-shaped article 1 with a protective member and the processing method of the plate-shaped article of the embodiment of the present invention will be described.
本発明の実施形態に係る保護部材付板状物品1は、図1に示すように、シート状の保護部材3を板状物品2の少なくとも一方主面に、保護部材3の側方端面3Eと板状物品2の側方端面2Eとが略面一となるよう、粘着剤4を介して貼り付けて成る物品である。図1は、本発明の実施形態に係る保護部材付板状物品1の断面イメージ図である。   As shown in FIG. 1, the plate-shaped article 1 with a protective member according to the embodiment of the present invention has a sheet-shaped protective member 3 on at least one main surface of the plate-shaped article 2, and side end surfaces 3 </ b> E of the protective member 3. The plate-shaped article 2 is an article that is attached via an adhesive 4 so that the side end face 2E of the plate-like article 2 is substantially flush. FIG. 1 is a cross-sectional image view of a plate-like article 1 with a protective member according to an embodiment of the present invention.
保護部材3は、板状物品2の主面の少なくとも一部を被覆して保護するシート状の部材である。保護部材3は、例えば、合成樹脂製のシートであり、好ましくはポリオレフィン系樹脂シート、より好ましくはポリプロピレンである。保護部材3の厚さは例えば0.005〜0.03(mm)である。保護部材3は、板状物品2の主面と同様の形状を成し、板状物品2の主面からはみ出すことなく該主面全体を覆うように貼り付けられていることが好ましい。また、保護部材3は、板状物品2の両主面を覆うよう貼り付けられていることが好ましい。   The protection member 3 is a sheet-like member that covers and protects at least a part of the main surface of the plate-like article 2. The protective member 3 is, for example, a synthetic resin sheet, preferably a polyolefin resin sheet, and more preferably polypropylene. The thickness of the protection member 3 is, for example, 0.005 to 0.03 (mm). The protective member 3 preferably has the same shape as the main surface of the plate-like article 2 and is attached so as to cover the entire main surface without protruding from the main surface of the plate-like article 2. Moreover, it is preferable that the protection member 3 is affixed so that the both main surfaces of the plate-shaped article 2 may be covered.
板状物品2は、端面を機械加工可能な板状の物品である。本実施形態では、板状物品2がガラス板である場合を一例として説明する。本実施形態の板状物品2は、ガラス組成として質量%で、SiO 50〜80%、Al 5〜25%、B 0〜15%、NaO 1〜20%、KO 0〜10%を含有し、オーバーフローダウンドロー法を用いて成形され、イオン交換法により強化された化学強化ガラスである。板状物品2の厚さは、例えば0.1〜1.3(mm)である。 The plate-like article 2 is a plate-like article whose end face can be machined. In the present embodiment, a case where the plate-like article 2 is a glass plate will be described as an example. The plate-like article 2 of the present embodiment is in mass% as a glass composition, SiO 2 50-80%, Al 2 O 3 5-25%, B 2 O 3 0-15%, Na 2 O 1-20%, It is a chemically strengthened glass that contains 0 to 10% of K 2 O, is formed using the overflow downdraw method, and is strengthened by the ion exchange method. The thickness of the plate-like article 2 is, for example, 0.1 to 1.3 (mm).
なお、上述の板状物品2は、一例であり、任意のガラス組成を有しても良い。例えば、板状物品2は、無アルカリガラスであっても良い。また、ガラスの成形方法は、オーバーフローダウンドロー法に限らずフロート法等の任意の成形方法を用いても良い。また、板状物品2は、端面を機械加工することが可能であればガラスに限らず、例えば、セラミック板、樹脂板、金属板等であっても良い。また、板状物品2の主面には、予め任意の加工が施されていても良い。板状物品2の主面は、予め研磨、洗浄、乾燥されていても良いし、さらにITO膜、反射防止膜(ARコート)、防眩膜(AGコート)、等の任意の膜が形成されていても良い。なお、上述の機械加工には、研削加工や、研磨加工等の加工が含まれる。   In addition, the above-mentioned plate-shaped article 2 is an example, and may have an arbitrary glass composition. For example, the plate-like article 2 may be non-alkali glass. The glass forming method is not limited to the overflow downdraw method, and any forming method such as a float method may be used. Further, the plate-like article 2 is not limited to glass as long as the end surface can be machined, and may be, for example, a ceramic plate, a resin plate, a metal plate, or the like. In addition, the main surface of the plate-like article 2 may be subjected to arbitrary processing in advance. The main surface of the plate-like article 2 may be previously polished, washed, and dried, and further, an arbitrary film such as an ITO film, an antireflection film (AR coat), or an antiglare film (AG coat) is formed. May be. The above-described machining includes processing such as grinding and polishing.
粘着剤4は、保護部材3と板状物品2とを接着する部材である。粘着剤4は、例えば、アクリル系粘着剤である。粘着剤4は、作業者の手によって保護部材3を板状物品2から剥離可能な程度の粘着力を有することが好ましい。具体的には、粘着剤4の粘着力は、ガラス板に24時間粘着した状態で放置した後JISZ0237に準拠して測定した場合に0.7〜2.5(N/25mm)であることが好ましい。粘着剤4は、保護部材3と板状物品2との間に略一定の厚さの層状に形成されていることが好ましい。また、保護部材3と板状物品とに挟まれた全領域にわたって形成されていることがさらに好ましい。   The pressure-sensitive adhesive 4 is a member that bonds the protective member 3 and the plate-like article 2 together. The pressure-sensitive adhesive 4 is, for example, an acrylic pressure-sensitive adhesive. It is preferable that the adhesive 4 has an adhesive force that can peel the protective member 3 from the plate-like article 2 by the operator's hand. Specifically, the adhesive strength of the adhesive 4 is 0.7 to 2.5 (N / 25 mm) when measured in accordance with JISZ0237 after being left in a state of being adhered to a glass plate for 24 hours. preferable. The pressure-sensitive adhesive 4 is preferably formed in a layer shape having a substantially constant thickness between the protective member 3 and the plate-like article 2. Further, it is more preferable that the film is formed over the entire region sandwiched between the protective member 3 and the plate-shaped article.
なお、保護部材付板状物品1は、板状物品2の厚さをα(mm)、保護部材3の厚さをβ(mm)、ガラス板に24時間粘着した状態で放置した後JISZ0237に準拠して測定した粘着剤4の粘着力をγ(N/25mm)、とした場合に下式(X)を満たすことが好ましい。
0.19≦(α−β)/γ≦0.74 …(X)
Note that the plate-like article 1 with the protective member is left in a state where the thickness of the plate-like article 2 is α (mm), the thickness of the protective member 3 is β (mm), and is adhered to the glass plate for 24 hours, and then the JISZ0237 It is preferable to satisfy the following formula (X) when the adhesive strength of the adhesive 4 measured in conformity is γ (N / 25 mm).
0.19 ≦ (α−β) /γ≦0.74 (X)
上述のように粘着力が好ましい値である場合、および式(X)が満たされる場合、保護部材付板状物品1の端面を機械加工等する際に保護部材3が板状物品2から剥離し難く、且つ作業者が保護部材3を意図的に剥離する際には保護部材3を粘着材4ごと容易に板状物品2から剥離できる。また、保護部材付板状物品1を良好に切断できる。   When the adhesive force is a preferable value as described above, and when the formula (X) is satisfied, the protective member 3 peels from the plate-like article 2 when machining the end surface of the plate-like article 1 with the protective member. It is difficult, and when the operator intentionally peels off the protective member 3, the protective member 3 can be easily peeled off from the plate-like article 2 together with the adhesive material 4. Moreover, the plate-shaped article 1 with the protective member can be cut well.
なお、保護部材3の剥離時に粘着剤4が板状物品2に付着して残るようであれば、残った粘着剤4を板状物品2から除去する処理をさらに施しても良い。具体的には、板状物品2を、薬液処理や洗浄(特にはスクラブ洗浄)等しても良い。   If the adhesive 4 remains attached to the plate-like article 2 when the protective member 3 is peeled off, a process of removing the remaining adhesive 4 from the plate-like article 2 may be further performed. Specifically, the plate-like article 2 may be treated with a chemical solution or washed (especially scrubbed).
上記に説明した本発明の保護部材付板状物品1は、保護部材3によって板状物品2の主面が保護されているため、機械加工時における板状物品2の主面の汚れや損傷を抑制できる。   Since the main surface of the plate-shaped article 2 is protected by the protective member 3 in the plate-shaped article 1 with the protective member of the present invention described above, the main surface of the plate-shaped article 2 is not stained or damaged during machining. Can be suppressed.
以下、保護部材付板状物品1を得る方法を説明する。先ず、保護部材3の一方面全体に粘着剤4を付着させる。すなわち、保護部材3および粘着剤4から成る粘着シート5を用意する。次いで、粘着シート5を板状物品2に貼り付けて、保護部材3が板状物品2に粘着剤4を介して貼り付いた状態にする。次いで、保護部材3ごと板状物品2を切断する。具体的には、スクライブチップで保護部材3を切断しつつ、板状物品2にスクライブを形成した後、該スクライブ線に沿って板状物品2を割断して保護部材付板状物品1を得る。上記のような方法によれば、切断面において、板状物品2の端面2Eと、保護部材3の端面3Eとが略面一となるため、容易に保護部材付板状物品1を得られる。   Hereinafter, a method for obtaining the plate-like article 1 with the protective member will be described. First, the adhesive 4 is attached to the entire one surface of the protection member 3. That is, an adhesive sheet 5 composed of the protective member 3 and the adhesive 4 is prepared. Next, the pressure-sensitive adhesive sheet 5 is attached to the plate-like article 2 so that the protective member 3 is attached to the plate-like article 2 via the adhesive 4. Next, the plate-shaped article 2 is cut together with the protection member 3. Specifically, after the protective member 3 is cut with a scribe chip, a scribe is formed on the plate-like article 2, and then the plate-like article 2 is cleaved along the scribe line to obtain the plate-like article 1 with the protective member. . According to the method as described above, since the end surface 2E of the plate-like article 2 and the end surface 3E of the protection member 3 are substantially flush with each other at the cut surface, the plate-like article 1 with the protection member can be easily obtained.
なお、上述した保護部材付板状物品1を得る方法は一例であり、本発明の主旨を変更しない範囲で適宜変形可能である。例えば、粘着剤4を板状物品2に付着させた後で保護部材3を貼り付けても良い。また、スクライブチップを用いる代わりに、レーザーを用いてスクライブの形成や切断を行なっても良い。また、保護部材3を、予め板状物品2と平面視同一寸法となるよう切り出した後に、各々の端面が略面一となるよう貼り付けて保護部材付板状物品1を得ても良い。   In addition, the method of obtaining the plate-shaped article 1 with a protective member described above is an example, and can be appropriately modified without changing the gist of the present invention. For example, the protective member 3 may be attached after the adhesive 4 is attached to the plate-like article 2. Further, instead of using a scribe chip, a scribe may be formed or cut using a laser. Alternatively, the protective member 3 may be cut out in advance so as to have the same dimensions as the plate-like article 2 and then pasted so that the end faces thereof are substantially flush with each other to obtain the plate-like article 1 with the protective member.
上述のようにして得られた保護部材付板状物品1の端面を加工具10により機械加工した後に、保護部材3および粘着剤4を板状物品2から剥離すれば、主面に傷等の欠陥が少なく且つ平滑度の高い端面を有する板状物品2を得られる。   If the protective member 3 and the adhesive 4 are peeled from the plate-shaped article 2 after machining the end surface of the plate-shaped article 1 with the protective member obtained as described above by the processing tool 10, the main surface will be scratched. A plate-like article 2 having an end face with few defects and high smoothness can be obtained.
以下、実施例に基づいて、本発明を詳細に説明する。表1は本発明の実施例および比較例を示している。なお、表1において、No.1〜6は本発明の実施例、No.7は比較例を示している。 Hereinafter, based on an Example, this invention is demonstrated in detail. Table 1 shows examples of the present invention and comparative examples. In Table 1, no. Nos. 1 to 6 are examples of the present invention. 7 shows a comparative example.
表中の各試料は以下のようにして作製した。先ず、ガラス組成として質量%で、SiO 61.6%、Al 19.6%、B 0.8%、NaO 16%、KO 2%を含有するようガラス原料を混合および溶融し、オーバーフローダウンドロー法を用いて成形および切断して長さ400mm、幅500mm、厚さ0.55mmの複数の矩形状ガラス板を得た。次いで、得られたガラス板を表1に記載の化学処理温度Tcの硝酸カリウム溶液に1時間浸漬して化学強化し、洗浄および乾燥した。次いで、強化した各ガラス板に、試料No.7を除き、表1に記載の粘着力を有するアクリル系粘着剤が予めコートされた表1に記載の厚さのポリオレフィン樹脂製の保護部材を各々貼り付けて各試料を得た。 Each sample in the table was prepared as follows. First, the glass composition contains glass so as to contain 61.6% SiO 2 , 19.6% Al 2 O 3 , 0.8% B 2 O 3 , 16% Na 2 O, and 2% K 2 O by mass%. The raw materials were mixed and melted, and shaped and cut using an overflow downdraw method to obtain a plurality of rectangular glass plates having a length of 400 mm, a width of 500 mm, and a thickness of 0.55 mm. Subsequently, the obtained glass plate was chemically strengthened by being immersed in a potassium nitrate solution having a chemical treatment temperature Tc shown in Table 1 for 1 hour, washed and dried. Next, each of the tempered glass plates was subjected to sample no. Each sample was obtained by affixing a protective member made of a polyolefin resin having a thickness shown in Table 1, which was previously coated with an acrylic pressure-sensitive adhesive having the adhesive strength shown in Table 1, except 7.
上記のようにして得た各試料について、下記特性評価を行った結果を表1に示す。   Table 1 shows the results of the following characteristics evaluation for each sample obtained as described above.
加工工程の剥がれは、加工工程として、番手が800の回転砥石を、回転速度1500m/分の条件で各試料の端面に沿って移動速度500mm/分で押し当て研磨加工し、保護部材が剥がれた箇所が各試料のガラス端面から5mm以内であった場合を○とし、5mm超であった場合を×として評価した。   Peeling of the machining process was performed by pressing and grinding a rotating grindstone having a count of 800 along the end face of each sample at a moving speed of 500 mm / min under the condition of a rotating speed of 1500 m / min, and the protective member was peeled off. The case where the location was within 5 mm from the glass end face of each sample was evaluated as ◯, and the case where the location was more than 5 mm was evaluated as ×.
剥離工程での剥離性は、上記加工工程後に剥離工程として、各試料を定盤載置し、対向する両端部の保護部材を指で挟み、同時に引き剥がして全面剥離可能であった場合を○とし、剥離できなかった場合やガラスが破損した場合を×として評価した。   The peelability in the peeling process is a case where each sample is placed on a platen after the above processing step, the protective members on both ends facing each other are sandwiched with fingers, and peeled at the same time, and the whole surface can be peeled off. The case where it was not able to peel and the case where glass was damaged was evaluated as x.
主面の欠陥は、上記剥離工程後の各試料を3波長蛍光灯1500lxの照度下で観察し、最長部の長さが0.1mm以上の傷が認められない場合を○とし、1個である場合を△、2個以上である場合を×とした。   The defect on the main surface is determined by observing each sample after the peeling step under the illuminance of a three-wavelength fluorescent lamp 1500 lx, and ◯ when the longest part is not scratched with a length of 0.1 mm or more. The case where there were Δ and the case where there were two or more were marked with ×.
切断性は、上記加工および剥離工程とは別途に、スクライブ割断を行い評価した。詳細には、スクライブホイールを各試料に押し当て走行させてスクライブ線を形成した後に折り割る試験を、押し当て荷重を3.5Nから1Nずつ増加させながら繰り返し行った。なお、スクライブホイールのホイール径はφ2mm、刃先角度は125°のであり、走行速度は100mm/secとした。試料を切断できた荷重が3.5〜11Nであった場合を○、11Nより大きかった場合、試料を切断できなかった場合および試料が破損した場合を×とした。   Cutability was evaluated by scribing and cutting separately from the above processing and peeling step. In detail, the test which makes a scribing wheel press against each sample, and then folds after forming a scribe line was repeatedly performed while increasing the pressing load from 3.5N to 1N. The wheel diameter of the scribe wheel was φ2 mm, the blade edge angle was 125 °, and the traveling speed was 100 mm / sec. The case where the load that could cut the sample was 3.5 to 11 N was marked as ◯, the case where the load was larger than 11 N, the case where the sample could not be cut, and the case where the sample was broken was marked as x.
表1に示すように、試料No.7は、保護部材を有していないために加工工程において多数の欠陥(傷)が発生した。一方、試料No.1〜6は、ガラス板の大部分が保護部材によって保護されていたため、試料No.7に比べ欠陥が少なかった。試料No.5、6は、試料No.1〜4に比べ保護部材の剥離領域が大きくなる傾向があり、剥離領域において多少の傷が発生したが、主面の大部分は保護部材により保護されていたため試料7に比べて欠陥は少なかった。試料No.4は、加工工程における保護部材の剥がれが少なく、欠陥も少なかったが、剥離工程における保護部材の剥離性が他の試料に比べて劣る傾向があった。   As shown in Table 1, sample no. Since No. 7 did not have a protective member, many defects (scratches) occurred in the processing step. On the other hand, sample No. In Nos. 1 to 6, since most of the glass plate was protected by the protective member, Sample No. Compared to 7, there were fewer defects. Sample No. 5 and 6 are sample Nos. The peeling area of the protective member tended to be larger than 1 to 4, and some scratches occurred in the peeling area, but most of the main surface was protected by the protective member, so there were fewer defects compared to sample 7. . Sample No. No. 4 had less peeling of the protective member in the processing step and fewer defects, but the peelability of the protective member in the peeling step tended to be inferior compared to other samples.
本発明の保護部材付ガラス、保護部材、およびガラスの保護方法は、例えば、携帯型および据え置き型ディスプレイデバイス、照明デバイス、タッチパネルデバイス等の各種デバイスに用いられるガラス板の製造時等に有用である。   The glass with a protective member, the protective member, and the glass protecting method of the present invention are useful when, for example, manufacturing a glass plate used in various devices such as portable and stationary display devices, lighting devices, and touch panel devices. .

Claims (7)

  1. 板状物品の少なくとも一方主面にシート状の保護部材が粘着剤を介して剥離可能に貼り付けられ且つ、貼り付けられた前記板状物品の側方端面と前記保護部材の側方端面とが略面一となる保護部材付板状物品を得る保護物品準備工程と、
    前記保護部材付板状物品の前記端面を機械加工する端面加工工程とを備える、板状物品の加工方法。
    A sheet-like protective member is detachably attached to at least one main surface of the plate-like article via an adhesive, and the side end face of the attached plate-like article and the side end face of the protective member are A protective article preparation step for obtaining a plate-like article with a protective member that is substantially flush with the protective member;
    A processing method for a plate-like article, comprising: an end face machining step for machining the end face of the plate-like article with a protective member.
  2. 前記保護物品準備工程は、
    前記粘着剤が層状に設けられた前記保護部材を、前記板状物品の表面に貼り付ける貼付工程と、
    前記保護部材とともに前記板状物品を切断する切断工程とを含み、
    前記端面加工工程において、前記切断面を研磨加工し、
    前記端面加工工程後に前記保護部材を前記板状物品から剥離する剥離工程をさらに備えることを特徴とする、請求項1に記載の板状物品の加工方法。
    The protective article preparation step includes
    A sticking step of sticking the protective member provided with the pressure-sensitive adhesive layered on the surface of the plate-like article;
    Cutting the plate-shaped article together with the protective member,
    In the end face processing step, the cut surface is polished,
    The plate-shaped article processing method according to claim 1, further comprising a peeling step of peeling the protective member from the plate-shaped article after the end face processing step.
  3. 前記粘着剤の粘着力が、JISZ0237に準拠して測定した場合に0.7〜2.5(N/25mm)であることを特徴とする、請求項1または2に記載の保護部材付ガラス。   The glass with a protective member according to claim 1 or 2, wherein an adhesive strength of the adhesive is 0.7 to 2.5 (N / 25 mm) when measured in accordance with JISZ0237.
  4. 前記板状物品の厚さをα(mm)、前記保護部材の厚さをβ(mm)、JISZ0237に準拠して測定した前記粘着剤の粘着力をγ(N/25mm)、とした場合に下式(X)を満たすことを特徴とする、請求項1から3の何れかに記載の板状物品の加工方法。
    0.19≦(α−β)/γ≦0.74 …(X)
    When the thickness of the plate-like article is α (mm), the thickness of the protective member is β (mm), and the adhesive strength of the adhesive measured according to JISZ0237 is γ (N / 25 mm) The plate-shaped article processing method according to any one of claims 1 to 3, wherein the following formula (X) is satisfied.
    0.19 ≦ (α−β) /γ≦0.74 (X)
  5. 前記板状物品は厚さ0.1〜1.0(mm)の強化ガラスであり、
    前記保護部材は厚さ0.005〜0.03(mm)のオレフィン系樹脂であり、
    前記粘着剤はアクリル系粘着剤であることを特徴とする、請求項1から4の何れかに記載の板状物品の加工方法。
    The plate-like article is a tempered glass having a thickness of 0.1 to 1.0 (mm),
    The protective member is an olefin resin having a thickness of 0.005 to 0.03 (mm),
    The method for processing a plate-shaped article according to claim 1, wherein the pressure-sensitive adhesive is an acrylic pressure-sensitive adhesive.
  6. 板状物品と、該板状物品の少なくとも一方主面に、側方端面が略面一となるよう、粘着剤を介して貼り付けられたシート状の保護部材とを備えた保護部材付板状物品であって、
    JISZ0237に準拠して測定した前記粘着剤の粘着力が0.7〜2.5(N/25mm)であることを特徴とする、保護部材付板状物品。
    A plate with a protective member, comprising: a plate-like article; and a sheet-like protective member attached via an adhesive so that a side end face is substantially flush with at least one main surface of the plate-like article. Goods,
    A plate-like article with a protective member, characterized in that the adhesive strength of the adhesive measured in accordance with JISZ0237 is 0.7 to 2.5 (N / 25 mm).
  7. 前記板状物品の厚さをα(mm)、前記保護部材の厚さをβ(mm)、JISZ0237に準拠して測定した前記粘着剤の粘着力をγ(N/25mm)、とした場合に下式(X)を満たすことを特徴とする、請求項6に記載の保護部材付板状物品。
    0.19≦(α−β)/γ≦0.74 …(X)

    When the thickness of the plate-like article is α (mm), the thickness of the protective member is β (mm), and the adhesive strength of the adhesive measured according to JISZ0237 is γ (N / 25 mm) The plate-like article with a protective member according to claim 6, wherein the following formula (X) is satisfied.
    0.19 ≦ (α−β) /γ≦0.74 (X)

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