TW201132419A - Method of manufacturing coated resin sheet - Google Patents

Method of manufacturing coated resin sheet Download PDF

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Publication number
TW201132419A
TW201132419A TW100100394A TW100100394A TW201132419A TW 201132419 A TW201132419 A TW 201132419A TW 100100394 A TW100100394 A TW 100100394A TW 100100394 A TW100100394 A TW 100100394A TW 201132419 A TW201132419 A TW 201132419A
Authority
TW
Taiwan
Prior art keywords
resin sheet
coating
roller
roll
sheet
Prior art date
Application number
TW100100394A
Other languages
Chinese (zh)
Inventor
Hisanori Oku
Original Assignee
Sumitomo Chemical Co
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Publication date
Application filed by Sumitomo Chemical Co filed Critical Sumitomo Chemical Co
Publication of TW201132419A publication Critical patent/TW201132419A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/12—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a coating with specific electrical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • B05D7/04—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber to surfaces of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/002—Combinations of extrusion moulding with other shaping operations combined with surface shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2252/00—Sheets
    • B05D2252/02—Sheets of indefinite length

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Coating Apparatus (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

The present invention provides a method of manufacturing coated resin sheet by uniformly coating a solution on the uneven surface of resin sheet without using a large quantity of surface coating solution. The invented manufacturing method comprises: compressing the circular circumference of a coating roll corresponding to the uneven surface at a side of a transported resin sheet; contacting the circular circumference of an auxiliary roll with the circular circumference of coating roll; rotating the coating roll in a configuration such that the contact portion of coating roll with the resin sheet is moved in a same direction as the moving direction of above-mentioned resin sheet; rotating the auxiliary roll in a direction opposite to the rotation direction of coating roll; and supplying the above-mentioned surface coating solution to a liquid storage part, in which the above-mentioned liquid storage part is located between the coating roll and the auxiliary roll and on the upstream side of rotation direction of the coating roll and the auxiliary roll using the contact portion between the coating roll and the auxiliary roll as a reference.

Description

201132419 六、發明說明： 【發明所屬之技術領域】 本發明涉及經塗佈之樹脂片材之製造方法。 【先前技術】 表面上轉印有形狀之樹脂片材係藉由如下方法而獲得之 片材，即於加熱熔融狀態下自模頭連續擠出原料樹脂而形 成連續樹脂片材，並將轉印模之凹凸形狀轉印於該樹脂片 材上。凹凸形狀之轉印係例如藉由於擠壓輥與轉印模之間 夾持樹脂片材，並以轉印模擠壓片材表面而進行。 作為於表面上轉印有形狀之片材之用途，先前眾所周知 的是例如建築用構件等。近年來，作為組裝於液晶顯示器 之背光源裝置中之各種光學構件之用途正在普及。 於背光源裝置中，樹脂片材例如作為用以使自光源射出 之光均等地向前表面側擴散之光擴散板而使用，以凹凸表 面朝向前表面側之方式安裝於設置有光源之燈箱之開放面 上0 另-方面’因光源之發光而導致於裝置内充滿熱，因 此’通常於背光源裝置中，需要設置用以更換空氣對裝置 内進行冷卻之通氣機構。然而’若設置通氣機構’則有時 錢、粉塵（以下稱作「塵埃等」）自外部經由通氣機構而 铋入裝置内’塵埃等零星地附著於光擴散板之凹凸表面 上。而且，當光源於附著有塵埃等之狀態下發光時，透過 液晶單元見到不均勾地附著之塵埃等，從而產生畫質降低 153329.doc 201132419 由此，作為用以減少塵埃等之附著之方法，例如提出有 藉由於光擴散板之表面形成含有帶電防止劑之塗佈層而維 持光擴散板之帶電防止性能之方法（例如，參照專利文獻 1.日本專利特開2007-178544號公報）》 於專利文獻1中，藉由例如於製作光擴散板之後，採用 輥塗法於光擴散板之表面上塗佈界面活性劑（帶電防止劑） 而形成塗佈層。 又，作為與塗佈層之形成不同之方法，提出有於製作光 擴散板時，於光擴散板之原料樹脂中調配帶電防止劑之方 法（例如，參照專利文獻2 :曰本特開2〇〇4_18447〇號公 報）。 【發明内容】 然而，當光擴散板之表面為凹凸形狀時，即便仿照專利 文獻1中例示之方法於凹凸表面塗佈帶電防止劑，亦會產 生帶電防止劑被凹凸形狀堵住而無法均勻地擴散之不良情 形。 作為解決該不良情形之方法，可考慮下述方法：於凹凸 表面上滴下大量之帶電防止劑，藉此使帶電防止劑自凹凸 形狀之凹部溢出而遍佈面内。但這樣會產生其他之不良情 形：帶電防止劑之用量變得很多而成本增加，或者多餘之 帶電防止劑污染光擴散板之製造裝置，或者帶電防止劑未 疋全乾燥而使光擴散板之處理變得困難。 另一方面，於專利文獻2例示之方法中，根據帶電防止 劑之調配量而存在以下不良情形：樹脂片材變色，或者由 153329.doc 201132419 帶電防止劑之溢出而引起樹脂片材（光擴散板）之表面狀態 劣化。 “ 本發明之目的係提供一種即便未大量使用表面塗佈液， 亦可於樹脂片材之凹凸表面上均勻地塗佈表面塗佈液之經 塗佈之樹脂片材之製造方法。 為了達到上述目的，本發明之經塗佈之樹脂片材之製造 方法包括以下步驟：於樹脂片材之一方表面形成凹凸；搬 送形成有上述凹凸之上述樹脂片材；以及於上述搬送之樹 脂片材之上述一方表面塗佈表面塗佈液。而且，上述塗佈 步驟包括：相對於上述搬送之樹脂片材之上述一方表面擠 壓塗佈輥之圓周面； 使輔助輥之圓周面接觸於上述塗佈輥之圓周面； 使上述塗佈輥以與上述樹脂片材之接觸部分向上述樹脂 片材之搬送方向移動之方式旋轉；及 使上述輔助輥向與上述塗佈輥相反之方向旋轉； 將上述表面塗佈液供給至液體積存部，該液體積存部係 於上述塗佈輥與上述輔助輥之間、且以上述塗佈輥與上述 輔助輥接觸之部分為基準而形成於上述塗佈報及上述輔助 輥之旋轉方向之上游側。 根據本發明之方法，液體積存部形成於塗佈輥與輔助棍 之間。因a，積存於液體積存部中之表面塗佈液藉由塗佈 輥之旋轉而連續地附著於通過液體積存部之塗佈輥之圓周 面（輥圓周面），於通過塗佈輥與輔助链之接觸部分時塗佈 量被調節，於直至到達塗佈輥與樹脂片材之抵接位置為 153329.doc 201132419 止以附著於輥圓周面上之狀態被搬送。而且，於該抵接 位置上’樹脂片材之凹凸表面(一方表面”皮附著有表面塗 佈液之塗佈報之圓周面㈣。纽，樹脂片材之凹凸表面 與表面塗佈㈣觸而使表面塗佈㈣佈於凹凸表面上。 如此’樹脂片材通過塗佈輥時’由於樹脂片材之整個凹 凸表面與附著於塗佈輥之圓周面上之表面塗佈液無遺漏地 妾觸因此’可將表面塗佈液均勻地塗佈於樹脂片材之凹 凸表面上。 又’由於未大量使用表面塗佈液，表面塗佈液之塗佈量 於塗佈報與輔助輥之接觸部分被調節，因&，表面塗佈液 之浪費較少。因此，表面塗佈液之用盆钍 可抑制塗佈液之成本之增加、製造裝置之㈣、;；=脂 片材之處理性之降低等。 因此，於本發明之方法中，較佳為上述樹脂片材被水平 搬送，且上述一方表面為上表面。 又’於本發明之方法中’較佳為上述輔助輥設置為：相 對於包括上述塗佈輥之軸及上述塗佈輥接觸於上述樹脂片 材之線之平面，包括上述塗佈輥之軸與上述輔助輥之軸之 平面，以上述塗佈輥之軸為中心向上述樹脂片材之搬送方 向之上游側傾斜。 於孩方法中，由於輔助輥設置於相對於塗佈輥向搬送方 向上游側傾斜之角度位置上，因此，輔助輥接觸於塗佈輥 之圓周面中較頂部更靠下側處，藉此，由輔助輥之圓周面 與塗佈輥之圓周面A持而形成之液體積存部於下游側開 153329.doc 201132419 放，又，可使藉由塗佈輥之上表面而形成之液體積存部之 下表面之至少一部分成為朝向塗佈輥73與輔助輥以接觸之 部分而向下傾斜之面。由此，藉由塗佈輥之旋轉可有效地 將供給之表面塗佈液導引向液體積存部。其結果，可使表 面塗佈液之浪費更少。 又，於本發明之方法中，較佳為上述表面塗佈液係自上 述樹脂片材之搬送方向之下游側供給至上述液體積存部。 由此’可藉由塗佈輥之旋轉而有效地將所供給之表面塗佈 液導引向液體積存部。 又’於本發明之方法中’較佳為由橡膠材料形成上述塗 佈輥之圓周面。 ^ 佈輥之圓周面由橡膠材料形成，則以塗佈輥擠壓樹 脂片材之凹凸表面 (方表面）時，可與凹凸表面之形狀相 p地使輥圓周面變形。藉此，可使輥圓周面亦深入凹凸 面之凹陷部分中’因此可更均勻地塗佈表面塗佈液。 m、；為橡膠材料’因此，即便於長時間使用後，亦 °曰 由。樹月日片材之接觸所引起之棍圓周面側之磨損 可長時間穩定地將表面塗佈液塗佈於樹脂片材 上0 '發月之方法中，較佳為上述凹凸具有向上述樹 二西：搬送方向延伸之複數個凸條與槽，各個凸條與槽 父錯配置。 係向樹脂片材之送出方向延伸之 使塗 佈於樹脂片材之 表面上之表面塗佈液沿著片材之搬送 153329.doc 201132419 又 ，於本發明之方法中，較佳為上述&條高度為15〇 μιη 以上。但即便凸條之高度不為150㈣以上，亦可表現出由 本發明之方法帶來之上述效果。例如，於凸條高度為5〇 μπι以上且不足150 μιη之情形時’藉由適當調節樹脂片材 之搬送速度，可良好地表現出本發明之效果。 於凸條之高度為150 μηι以上之情形時，即便於凹&上滴 下表面塗佈劑，所滴下之表面塗佈劑亦會被凸條堵住而益 法均勾地於面内擴散。相對於此，於本發明之方法令，即 便對具有高度為15〇叩以上之凸條之樹脂片材亦可均勾地 塗佈表面塗佈劑。 進而，於本發明之表面形狀轉印樹脂片材之製造方法 中，較佳為表面塗佈液含有帶電防止劑。又，較佳為帶電 防止劑含有界面活性劑。 發明之方法適於以欲賦予帶電防止性能之各種樹 =如藉由微細之凹凸使入射之光擴散之光擴散板 於使用帶電防止劑作為表面塗佈液之情形時藉 電防止劑塗佈於樹脂片材之表面上，可對所製造之樹脂 材充分地賦予帶電防止性能 、曰 j, u . 此兀全沒必要於片材之 原㈣月曰中調配帶電防止劑 可。装处m 人可叩使調配亦為少量即 具、，，。果，可抑制樹脂片材之變 態之降低。 又巴·片材之表面狀 根據本發明之樹脂片材之 袈&方法，即便未大量使用表 153329.doc 201132419 面塗佈液，亦可將表面塗佈液均勻地塗佈於樹脂片材之微 細之凹凸表面上。 【實施方式】 <液晶顯示器之整體構成> 圖1係液晶顯示器之模式側視圖。圖2係液晶顯示器之模 式立體圖。 液晶顯示器1係所謂之直下型（direct type)液晶顯示器， 包括背光源2與配置於背光源2前表面之液晶面板3。又， 於圖1與圖2中，方便起見，將液晶顯示器j以其前側朝向 紙面上側之姿勢來表示。又，以下之圖中所表示之液晶顯 不器1、背光源2、液晶面板3等各構成構件之縮尺係為了 便於說明而分別設定者，所有構成構件之縮尺並非相同。 背光源2包括：薄型箱狀之樹脂製燈箱6，其具有四方板 狀之後壁4及自後壁4之周緣向前方一體地豎立設置之四方 框狀之側壁5，且前表面側開放；複數個線狀光源？，其設 置於燈箱6内·，以及積層樹脂板9,其堵住燈箱6之開放面8 (前表面）。 即，就箱狀之燈箱6而言，盆土人士， ° 具開放面8之輪廓由四方框狀 之側壁5形成，於由側壁5及祛辟d h 2次傻壁4包圍之空間内設置有線 狀光源7。 面之全體上安裝有例如用以使自 於燈箱6之後壁4之内表 之開放面8側反射之反 線狀光源7向後壁4側入射之光向箱 射板（未圖不）。 線狀光源7為例如直徑為2 mm〜4 mm之圓筒狀燈 複數 153329.doc 201132419 個線狀光源7以相對於積層樹脂板9之背表面（後述之主面 20)隔者固定間隔之狀態互相平行地隔著相同之間隔而配 置0 自省電化之觀點考慮，相鄰之線狀光源7之中心彼此之 間隔L較佳為10 _以上。又，自薄型化之觀點考慮，積 層樹脂板9之背表面(後述之主面20)與線狀光源7之中心之 距離d較佳為50 mm以下。又，間隔L相對於距離d之比例 (L/d)較佳為〇，尤其’相鄰之線狀光源7彼此之間隔 L較佳為1〇 mm〜100 mm，積層樹脂板9之背表面（後述之主 面20)與線狀光源7之中心之距離d較佳為3 mm〜5〇爪爪。 又，線狀光源7之中心與燈箱6之後壁4之内表面（反射板）之 距離f例如為2.0 mm〜1〇.〇 mm。 又，作為線狀光源7，例如可使用螢光管（冷陰極管）、 鹵素燈、鶴絲燈等周知之筒形燈。又，作為背光源2之光 源，可使用發光二極管等點狀光源等代替線狀光源7。 液晶面板3包括：液晶單元10及自厚度方向之兩側夾持 液晶單元10之一對偏光板U、12。該液晶面板3以一方之 偏光板11與積層樹脂板9對向之方式配置於背光源2之前表 面。 作為液晶單元10，例如可使用TFT(thin film transistor， 薄膜電晶體）型液晶單元、STN(Super Twisted Nematic，超 扭轉向列）型液晶單元等周知之液晶單元。 又’亦可於液晶面板3與積層樹脂板9之間插入各種光學 膜、擴散膜。 153329.doc 201132419 <積層樹脂板之構成> 圖3係積層樹脂板之模式立體圖。圖4係表示積層樹脂板 與燈箱之安裝狀態之燈箱之要部放大剖面圖。 如圖3所示，積層樹脂板9形成為與燈箱6之側壁5之框形 狀基本相同之四方板狀。積層樹脂板9為於厚度方向上積 層有3片樹脂層之光透過性之3層擴散板，包括：相對厚之 基材層13 ;及自厚度方向之兩側夾持該基材層13之相對薄 之1對表面層14、15。 積層樹脂板9於前表面側之主面丨6上具有作為微細之凹 凸之半圓凹凸部17。 半圓凹凸部17包括於積層樹脂板9之丨組對向周緣間以條 紋狀延伸之一維型之柱面鏡形狀之半圓凸條18及相鄰之半 圓凸條1 8之間之凹條丨9。又，於以下之圖中半圓凸條^ 8 及凹條19之數量係為了便於說明而分別設定者，實際上並 不限定於圖式中所示之數量。 半圓凸條18之寬度W例如為1〇 μιη〜5〇〇 μιη，較佳為兄 μηι〜400 μιη。又，半圓凸條18之高度Η例如為ι〇 以上， 較佳為50 μΐΠ以上，更佳為15〇 μιη以上，進而佳為15〇 μΓΒΜΟΟ μιη。又，作為半圓凸條18之寬度w與高度η之具 體數值，可例示W=400 μιη、Η=2〇〇 μπι。其中，寬度w與 高度Η之值並不限定於此β 於半圓凹凸部17中，多數個半圓凸條18相互平行、且隔 著相同之間隔Ε(例如為！ μιη〜丨5 μιη)而配置。相鄰之半圓 凸條18之頂點彼此之距離（間距ρ)例如為1〇 μιη〜5⑼ 153329.doc •12· 201132419 較佳為50 μηι〜400 μπι。又，半圓凸條18之高度H相對於間 距Ρ之比率（Η/P)例如為0.2〜0.8。 而且，於具有半圓凹凸部17之前表面側之主面16上塗佈 有帶電防止劑。帶電防止劑層例如可藉由將含有帶電防止 劑或者其前驅物、以及溶媒之塗佈液塗佈於半圓凹凸部i 7 上’並使；谷媒乾燥而形成。帶電防止劑只要為具有帶電防 止功能之材料則無特別之限定，較佳為界面活性劑。 界面活性劑並無特別之限定，例如可舉出烷基磺酸、烷 基苯磺酸及該些之Li(鋰）鹽、Na(鈉）鹽、Ca(鈣）鹽、 Mg(鎂）鹽、Zn(鋅）鹽、烯烴系硫酸酯或其金屬鹽、高級醇 之磷酸酯類等陰離子系界面活性劑；三級胺、四級胺鹽、 陽離子系丙烯酸酯衍生物、陽離子系乙烯基醚衍生物等陽 離子系界面活性劑；烷基胺系甜菜鹼之兩性鹽、羧酸或磺 酸丙氨酸之兩性鹽、氧化胺系等兩性系界面活性劑；脂肪 酸多元醇酯、烷基（胺）之聚氧化乙烯加成物等非離子系界 面活性劑等。該些可單獨使用或者兩種以上組合使用。 又，該些中，自半圓凹凸部17之帶電防止性能之持續耐久 性之觀點考慮，較佳為可舉出兩性系界面活性劑，更佳為 地可舉出氧化胺系界面活性劑。 另一方面，積層樹脂板9於背表面側之主面2〇上具有形 成有複數個微細之凹凸之糙面部21。糙面部21設為於背表 面側之主面20整體上具有大致均勾分佈之壓紋形狀之糙 面。 链面部2〗之凹凸形狀例如可以表面之粗糙度來表示。作 I53329.doc •13· 201132419 為一例，糙面部21之算術平均粗糙度Ra例如為基於Jis B0601-2001測定之值，為〇,8 gm〜5.〇 ，較佳為j 〇 μιη~4·0 μπι。又，链面部2 1之十點平均粗糖度尺2例如為基 於JIS Β0601-2001測定之值，為8.0 μΓη〜3〇〇 μιη ’較佳為 8.0 μπι〜20.0 μηι。又，糙面部21之平均間隔Rsm例如為基 於JIS B0601-2001測定之值，為1〇〇 μηι〜4〇〇 μιη，較佳為 200 μηι〜400 μηι 〇 又，如圖4所示，加上基材層13之厚度ti、背表面側之表 面層14之厚度h與前表面側之表面層〗5之厚度b而得之積 層樹知板9之總厚度T例如為〇. 1 mm〜10 mm，較佳為1〇 mm〜4.0 mm。又，基材層13之厚度t丨例如為〇 〇5 mm〜9 〇 mm ’較佳為0.9 mm〜3.0 mm。又，背表面側之表面層14之 厚度t2例如為〇.〇3 mm〜1.0 mm，較佳為〇 〇5 mm〜〇」 又，前表面側之表面層15之厚度t3例如為〇 〇 〇 mm，較佳為〇,〇 mm〜mm。即，可不形成前表面侧之表 面層15，於此情形時，積層樹脂板9為積層有相對厚之基 材層13與相對薄之表面層14之光透過性之2層光擴散板。 於為2層光擴散板之情形時，半圓凹凸部17形成於基材層 13之前表面側之主面上。 作為積層樹脂板9之原料並無特別之限制，例如可使用 周知之透光性樹脂。 作為透光性樹脂，例如可舉出丙烯酸系樹脂、苯乙烯系 樹脂、聚碳酸酯、聚乙烯、聚丙烯、環狀聚烯烴、環狀烯 烴共聚物、聚對苯二甲酸乙二醇酯、MS樹脂（曱基丙烯酸 153329.doc •14- 201132419 甲酯-苯乙烯共聚物樹脂）、ABS樹脂㈣^丨⑽^出e butadiene Styrene resin，丙烯腈_ 丁二烯_苯乙烯共聚物樹 脂）、AS樹脂（aCryl〇nitrile styrene c〇p〇lymer ”化，丙烯 腈-苯乙烯共聚物樹脂）等。 上述透光性樹脂可單獨使用或者兩種以上組合使用。 又，該些中，較佳為可舉出苯乙稀系樹脂，更佳為地可舉 出單獨使用苯乙烯系樹脂。 又，用作基材層13之原料之樹脂與用作表面層14、 15之原料之樹脂（Β)可相同，亦可不同。 又，可根據需要於積層樹脂板9中含有光擴散劑（光擴散 粒子）。 作為光擴散劑，只要為與構成積層樹脂板9之透光性樹 月曰之折射率不同’且可擴散透射光之粒子就無特別之限 制例如作為無機系之光擴散劑，可舉出碳酸鈣、硫酸 銷、二氧化鈦、氫氧化銘、二氧化石夕、玻璃、滑石、雲 母白炭黑、U匕鎮、氧化辞等。該些亦可為以脂肪酸等 實施了表面處理後之無機系之光擴散劑。 例如作為有機系之光擴散劑，可舉出苯乙烯系聚 合物粒子、丙烯酸系聚合物粒子、矽氧烷系聚合物粒子 Τ，較佳為可舉出重量平均分子量為5〇萬〜5〇〇萬之高分子 量聚合物粒子、溶解於丙酮中時之膠體率為1〇重量％以上 之交聯聚合物粒子。 上述光擴散劑可單獨使用或者兩種以上組合使用。 於積層樹脂板9含有光擴散劑之情形時，光擴散劑之調 153329.doc 15 201132419 配比例’相對於1〇〇重量份之透光性樹脂，為〇 〇〇1重量份 〜1重量份’較佳為^(^丨重量份〜0 2重量份。又’光擴散劑 可用作與上述透光性樹脂之母膠。又，自光擴散性之觀點 考慮’透光性樹脂之折射率與光擴散劑之折射率之差之絕 對值通常為0.01〜0.20，較佳為0.02〜0 15。 又亦可根據需要而於積層樹脂板9中添加例如紫外線 吸收劑、熱穩定劑、抗氧化劑、财候劑、光穩定劑、螢光 增白劑、加工穩定劑等各種添加劑。於添加紫外線吸收劑 之情形時’相對於100重量份之透光性樹脂，較佳為添加 〇· 1重量份〜3重量份之紫外線吸收劑。只要為上述之範 圍’就可抑制紫外線吸收劑向表面之滲出，從而可良好地 維持積層樹脂板9之外觀。又，於進而添加熱穩定劑之情 形時’相對於1重量份之透光性樹脂中之紫外線吸收劑， 較佳為以2重量份以下之比例添加熱穩定劑；相對於透光 性樹脂中之紫外線吸收劑1重量份，更較佳為添加〇〇1重 置份〜1重量份之熱穩定劑。又’於進而添加光穩定劑之情 形時’相對於100重量份之透光性樹脂，較佳為添加01重 量份〜1重量份之光穩定劑。 而且’積層樹脂板9如圖4所不’於半圓凹凸部17相對於 燈箱6内之線狀光源7成為平行之位置上，使積層樹脂板9 之背表面（主面20)與燈箱6之側壁5抵接而固定於燈箱6上。 由此，燈箱6之開放面8被積層樹脂板9堵住。 <積層樹脂板（積層樹脂片材）之製造方法> 上述之積層樹脂板9可藉由將採用下述方法製造之積層 153329.doc -J6- 201132419 樹脂片材切斷而製作。 圖5係於本發明之一實施方式之積層樹脂片材之製造方 法中使用之製造裝置之概略構成圖。圖6係積層樹脂片材 之製造裝置之要部放大立體圖。 片材製造裝置5 1包括：將原料樹脂呈片狀擠出並成形之 片材成形機52;用以藉由擠壓而使所擠出之積層樹脂片材 53成形之一組擠壓用輥群54;用以於所成形之積層樹脂片 材53上塗佈帶電防止劑之塗佈用輥群55 ;以及用以抽取積 層樹脂片材53之一對抽取用輥群56。 片材成形機52包括：用以對基材層丨3之原料樹脂（a)進 行加熱熔融之第一擠出機57 ;用以對表面層14之原料樹脂 (B)進行加熱熔融之第二擠出機58 ;被供給經第一擠出機 57與第二擠出機58熔融之樹脂之進料塊⑽邮9;以 及用以以片材狀態擠出進料塊59内之樹脂之模頭。 作為第一擠出機57盥第-棬φ拖1 ▲ ”弟一擠出機58，可使用例如單轴擠 機、雙轴擠出機等周知之擠出成彡备 出成形機。於第一擠出機57 及第二擠出機58中安裝有用向 之漏斗61、62。 ⑽出機之枓请内投入樹脂 琨料塊59只要為可將兩種 以積層之狀態複合擠出之樣二Μ曰供給至模頭6°、」 用兩種3層分配型、兩種= 別之限制，例如引 作為模祕，只^ 等周知之進料塊。 歧管 ^用輥群54為如下機構且包括^擦絲.65,s I53329.doc -17. 201132419 該擠壓用輥群54—面藉由擠壓而使積層樹脂片材53成形， 一面藉由轉印模而於積層樹脂片材53之上下表面75、 76(上表面76為積層樹脂板9之前表面側之主面16，下表面 75為積層樹脂板9之背表面側之主面2〇)上形成凹凸。 三個擠壓輥63〜65自上方依序命名為上輥63、中間輥64 以及下輥65，分別具有圓柱狀之金屬製（例如不鏽鋼製、 鋼鐵製等）輥，以各軸線成為水平且相互之軸線成為平行 之方式於垂直方向連續地配置。於擠壓輥63〜65之旋轉軸 上分別連接有馬達（未圖示），上輥63及下輥65可逆時針旋 轉，中間輥64可順時針旋轉。即，擠壓輥63〜65自上方依 序為「可逆時針旋轉」、「可順時針旋轉」、「可逆時針旋 轉」。藉此，由於所有輥63〜65可以夾持積層樹脂片材53之 狀態同步旋轉，因此可對自片材成形機52擠出之積層樹脂 片材53之兩表面75、76實施加工之同時進行搬送，通過塗 佈用輥群55向抽取用輥群56搬送》 各親之直位例如為1 〇〇 mm〜5〇〇 mrn。又，於使用金屬製 輥作為擠壓輥63〜65之情形時，亦可於其表面上實施例如 鍍鉻、鍍銅、鍍鎳、鍍Ni-P等鍍覆處理。 上輥63之圓周面66例如藉由實施鏡面加工而成為平滑 面。 於中間輥64之圓周面67上安裝有例如用以於積層樹脂片 材53上形成糙面部21之糙面轉印模68。 链面轉印模68上具有與積層樹脂板9之背表面側之主面 20之糙面部21相反型之微細凹凸之複數個壓紋形狀形成於 153329.doc 201132419 中間輥64之圓周面67上。即，糙面轉印模68之表面成為具 有微細之凹凸之壓紋形狀大致均勻地分佈於整個表面上之 輪面，其算術平均粗糙度Ra例如為6.0 μιη〜8.0 μιη，其十 點平均粗糙度Rz例如為45.0 μπι〜50.0 μιη，其平均間隔Rsm 例如為 12 0 μπι〜1 5 0 μηι。 於下輥65之圓周面69上安裝有用以於積層樹脂片材53形 成半圓凹凸部17之凹版轉印模70。 於凹版轉印模70中，如圖6所示，與柱面鏡形狀之半圓 凸條18相反型之凹槽71沿著下輥65之圓周方向形成為複數 個條紋狀。即’凹槽71之與長度方向（圓周方向）正交之切 剖面具有大致半圓弧形之輪廓。相鄰之凹槽71之中心彼此 之間距可根據半圓凸條丨8之形狀適當設定。 再者，糙面轉印模68亦可安裝於下輥65上，凹版轉印模 70亦可安裝於中間輥64上。又，中間輥64之圓周面67亦可 藉由實施鏡面加工而成為平滑面。於此情形時，積層樹脂 板9之背表面側之主面2〇成為平滑面。 作為上述糙面轉印模68及凹版轉印模7〇之原料，可使用 例如有機材料。 作為有機材料，只要為具有即便反覆接缺以加孰炼融 狀態剛自模頭60擠出之積廣樹脂片材53亦可維持轉印模之 形狀之耐熱性之有機材料即可，例如可舉出熱固性樹脂、 熱可塑性樹脂等樹脂β =熱㈣樹脂’例如可舉出苯㈣脂、環氧樹脂、三 胺樹知、脲祕樹脂、聚醯亞胺樹脂㈣―匀樹 153329.doc •19- 201132419 脂）、不飽和聚酯樹脂、醇酸樹脂等β 作為熱可塑性樹脂，例如可舉出笨乙烯系樹脂、丙烯酸 系樹脂、聚乙烯樹脂、聚丙烯樹脂、環狀烯烴聚合物樹 脂、丙烯腈-丁二烯·苯乙烯樹脂（ABS樹脂）、聚對苯二甲 酸乙一醇西日樹月日（PET(polyethylene terephthalate)樹脂）、聚 碳酸醋樹脂（PC(polycarbonate)樹脂）、聚醚砜樹脂（PES (polyether sulfone)樹脂）、熱可塑性聚醯亞胺樹脂（ρι樹脂） 等。 自该些中’較佳為可舉出維卡軟化點（JIS K7206-1999 A50法）較自模頭60中擠出之積層樹脂片材53之維卡軟化點 高40°C以上之熱可塑性樹脂、交聯之熱可塑性樹脂。 作為有機材料之一具體例，可使用形成有上述相反型之 轉印模之有機材料製膜作為糙面轉印模68及凹版轉印模 70 〇 有機材料製膜（糙面轉印模68及凹版轉印模7〇)之厚度例 如為0.05 mm~5 mm。若厚度為上述範圍，則可對積層樹 月θ片材5 3良好地進行轉印。 作為用以對作為自擠壓用輥群μ送出並搬送之積層樹脂 片材53之一方表面之上表面76塗佈帶電防止劑層形成用塗 佈液之機構’塗佈用輥群55包括三個輥72〜74。 三個輥72〜74分別包含圓柱狀之金屬製（例如不鏽鋼製、 鋼鐵製之等）輥，以各軸線相對於擠壓輥63〜65之軸線平行 之方式於上下方向連續地配置。 二個輥72〜74自下方依序為：自下側與積層樹脂片材53 153329.doc 201132419 抵接之支撐輥72;夾持積層樹脂片材53且與支撐輥72對 向、並自上側與積層樹脂片材53抵接之塗佈輥73 ;以及配 置於塗佈輥73之斜上方、且與塗佈輥73抵接之輔助輥74。 支標輥72設置成其上端位於與下輥65之下端接觸之樹脂 片材53之下表面相同高度之位置。由此，由於可於以剛送 出之高度支撐自下輥65送出之積層樹脂片材53之狀態下塗 佈帶電防止劑層形成用塗佈液，因此，可提高塗佈之操作 性。支撐親72為自由輥，與積層樹脂片材53之下表面75接 觸’藉由與所搬送之樹脂片材53之表面接觸而可被動地旋 轉。 塗佈輥73係旋轉軸與馬達（未圖示）連接而可逆時針主動 地旋轉’進而’於與積層樹脂片材53之支撐輥72之抵接位 置（接觸位置）相同之水平位置，自上側與積層樹脂片材53 之上表面76接觸。為了藉由塗佈輥73與支撐輥72自兩側夾 持樹脂片材53，塗佈輥73之圓周面對樹脂片材53之上表面 進行擠壓。又，塗佈輥73與支撐輥72同樣地，亦可為藉由 與所搬送之樹脂片材53接觸而被動地旋轉之自由輥。塗佈 輥73之圓周面77較佳為由橡膠材料形成。作為橡膠材料， 可舉出例如根據JIS K6253測定之硬度為A3〇〜A90之橡膠材 料，具體地為NBR系橡膠等，例如，藉由於圓周面77上安 裝該些橡膠製片，可使圓周面77為橡膠製。又，塗佈輥73 之圓周面77較佳為例如藉由凸面加工而具有軸向中央部較 兩端部隆起之形狀。 輔助輥74係旋轉轴與馬達（未圖示）連接而可沿順時針' 153329.doc •21 · 201132419 即/〇與塗佈報73相反之方向主動地旋轉。又，辅助輥74與 支樓輥72同樣地’亦可為藉由與旋轉之塗佈輥73接觸而被 動地旋轉之自由輥。又’輔助輥74配置為：包括塗佈輥73 之轴及輔助輥74之軸之第2平面79，相對於包括塗佈輥73 之轴及塗佈輥73與積層樹脂片材53接觸之線之第一平面 78，以塗佈輥73之軸為中心，向積層樹脂片材53之搬送方 向之上游側傾斜。輔助輥74之圓周面與塗佈輥73之圓周面 77接觸。具體而言，輔助輥74以如下方式與塗佈輥乃接 觸’即包括輔助輥74之軸及塗佈輥73之軸之第2平面79與 第一平面78所成之角度θ(以下有時稱作輔助輥74與塗佈輥 73所成之角度θ)例如為ι〇。〜9〇。、較佳為15&。、更佳為 20°〜35°。輔助輥74與塗佈輥73接觸。 塗佈輥73與輔助輥74之間、且以塗佈輥73與辅助輥74接 觸之部分為基準而於塗佈輥73與輔助輥74之旋轉方向之上 游側，形成有由塗佈輥73之圓周面77與輔助輥74之圓周面 8〇劃分、且向輥72〜74之軸線方向延伸之液體積存部8ι。 藉由輔助輥74以角度0>〇之方式傾斜並與塗佈輥73接觸， 液體積存部81可向片材之送出方向下游側開放，且可使由 塗佈輥73之上表面形成之液體積存部81之下表面之至少一 部分成為朝向塗佈輥73與輔助輥74接觸之部分向下傾斜之 面〇 又，輔助輥74之圓周面8〇之材質較佳為與塗佈輥”之圓 周面77之材質相同。即，輔助輥74之圓周面8〇較佳為由橡 膠材料形成。又，輔助輥74之圓周面8〇之材質亦可為海綿 153329.doc -22· 201132419 製。又，輔助輥74之圓周面80較佳為具有例如藉由進行平 面加工而不帶圓角之、軸向中央部及兩端部均平坦之形 狀。藉由對塗佈輥73之圓周面77進行凸面加工，且對輔助 輥74之圓周面80進行平面加工，可使該些輥73、之接觸 狀態良好。 於液體積存部8i之上方，於液體積存部81之長度方向 (塗佈輥73之軸向）互相隔著相同之間隔設置有複數個供給 喷嘴82。帶電防止劑層形成用塗佈液向液體積存部8ι之供 給例如藉由自供給喷嘴82滴下帶電防止劑層形成用塗佈液 而進行。又，供給喷嘴82亦可僅設置於液體積存部81之長 度方向中央部之一個部位上。 供給噴嘴82與液體收容部83連接。於液體收容部以令貯 存有含有帶電防止劑或其前驅物與對其進行稀釋之溶媒之 帶電防止劑層形成用塗佈液。作為溶媒，可舉出離子交換 水所射存之塗佈液中之帶電防止劑或其前驅體之濃度例 如為0_1重量％〜5重量％，較佳為丨〇重量〇重量^若 V電防止蜊等之丨辰度為上述範圍，則可於積層樹脂片材μ 上更均勻地塗佈帶電防止劑，並且可財積層樹脂片材W 充分之帶電防止性能。 對抽取用輥群56包括自厚度方向兩側夾持積層樹脂片 材53之一對抽取輥μ、85。 抽取輥84 85分別包含圓柱狀之金屬製（例如不鏽鋼 製鋼鐵衣等）較，且以使下側之抽取親84之上端位於與 下親65之下端接觸之樹脂片材之下表面相同高度之位置之 153329.doc •23· 201132419 方式對向設置。藉此，由於可將自下輥65送出之積層樹脂 片材53於以剛送出後之高度支撐之狀態下水平搬送，因 此’可減少搬送阻力。 換言之，支撐輥72及抽取輥84以將所搬送之樹脂片材53 於塗佈液之塗佈位置即向塗佈輥73接觸時維持水平之方式 進行設置。接下來，對使用上述製造裝置之積層樹脂片材 53之製造方法進行說明。 (1)片材製造步驟 首先，將基材層13〜/小，l>T w乂八芏弟一擠出機$ ] 之漏斗61中，熔融混煉後供給至進料塊59中。另一方面， 將表面層14、15之原料樹脂（B)投入至第二擠出機58之漏 斗62中，熔融混煉後供給至進料塊59中。第一擠出機”及 第二擠出機58之料筒溫度例如設定為19〇〇c 〜25〇<t。 然後，進料塊59内之樹脂藉由自模頭6〇複合擠出，而作 為包含中間之基材層13及上下側之表面層14、15之3層積 層樹脂片材5 3而連續擠出。 (2)轉印步驟 自模頭60擠出之積層樹脂片材53藉由以擠壓輥^〜^擠 壓、冷卻’而於兩表面上成形有凹凸。 具體而言，自模頭6〇複合擠出之樹脂由上輥63與中間輥 64夾持而被擠壓之後，下表面75(背表面側之主面2〇)密接 於中間輥64之圓周面67上而搬送，此時被冷卻。作為上輥 63及中間輥64之表面溫度，較佳為較積層樹脂片材53之擠 出溫度低，例如為5〇r〜12〇t。而且，於上輥63與中間輥 153329.doc •24· 201132419 64之間進仃擠壓時’於積層樹脂片材53之下表面75(背表 之主面20)上，藉由轉印令間輥64之链面轉印模μ之 形狀形成複數個微細之凹凸而形成糙面部2卜 之後’該積層樹脂片材53由中間輥64與下輥叫持而被 ^壓。作為下輥65之表面溫度，例如為贼〜⑵。而 於中間輥64與下輥65之間進行擠壓時，於積層樹脂片 材53之上表面76(前表面側之主面16)上，藉由轉印凹版轉 印㈣之表面形狀而於片材之流動方向（搬送方向）上形成 多條平行之條紋狀之半圓凸條18及凹條Μ。 1積層树月曰片材53之上表面76密接於下輕Μ之圓周 面69而搬送’自下輥65之下端向塗佈用輥群55沿水平 送出。 (3)塗佈步驟 於塗佈用輥群55中，塗佈㈣向與下輥65相同之方向旋 轉（逆時針旋轉）’伴隨於必匕，輔助轉74向與塗佈輥73相反 之方：(順時針方向)旋轉。塗佈輥73之旋轉速度並無特別 之限定’設定為圓周面之線速度與樹脂片材53之搬送速度 同為佳X，對輔助輕74之旋轉速度亦無特別之限定， 設定為圓周面之線速度與塗佈輥73之圓周面之線速度相同 為佳。 二後自ί、給喷嘴82，較佳為自樹脂片材53之搬送方向 之下游側朝向上游側，供給至液體積存部Η之帶電防止劑 層形成用之塗佈液藉由塗佈㈣之旋轉而連續地附著於通 過液體積存部81之塗佈輕73之圓周面”上，於直至到達塗 153329.doc -25- 201132419 佈輥73與積層樹脂片材53抵接之位置為止，以附著於圓周 面77上之狀態搬送。 繼而’於塗佈輥73與積層樹脂片材53抵接之位置上，積 層樹脂片材53之上表面76被附著有帶電防止劑層形成用之 塗佈液之圓周面77擠壓。由此，積層樹脂片材53之半圓凹 凸部17與帶電防止劑層形成用之塗佈液接觸，於形成有半 圓凹凸部17之上表面76均勻地塗佈帶電防止劑層形成用之 塗佈液。之後，根據需要，藉由周知之方法，自塗佈之塗 佈液中除去溶媒而完成帶電防止劑層之塗佈。 此外，較佳為，例如藉由調節塗佈輥73與輔助輥74之密 接度，又結合於與積層樹脂片材53之總厚度1來調節塗佈 輕73與支撐報72之間隙之大小而增減該些輥之夾持力，藉 此對帶電防止劑層形成用之塗佈液之塗佈量進行調節，以 使例如於溶媒等之乾燥後於表面上獲得之帶電防止劑之量 為 0.01 g/m2〜50 g/m2。 (4) 抽取步驟 之後，完成塗佈之片材藉由一對抽取輥84、85進行抽 取，製造作為表φ上轉印有形狀且於其表面上塗佈有帶電 防止劑之樹脂片材之積層樹脂片材53。之後，積層樹脂片 材53進而被冷卻後，以適當之大小進行切斷，藉此可獲得 上述積層樹脂板9。 (5) 作用效果 如以上所述’根據本實施方式之方法，搬送之積層樹脂 片材53通過塗佈輥73與支撐輥72之間時，形成於積層樹脂 153329.doc • 26 · 201132419 片材53之上表面76之半圓凹凸部17整體與附著於塗佈輥乃 之圓周面77上之帶電防止劑層形成用之塗佈液無遺漏地接 觸。因此，可於積層樹脂片材53之半圓凹凸部17上均勻地 塗佈帶電防止劑。 此外，藉由增減塗佈輥73與輔助輥74之密接度，又增減 塗佈輥73與支撐輥72之夾持力，而可調節帶電防止劑之塗 佈量，因此，帶電防止劑之浪費少。因此，使用少量之帶 電防止劑即可m以角度0超過Q。之方式使辅助親 74傾斜並與塗佈輥73接觸之情形時，由於可使由塗佈輥73 之上表面形成之液體積存部81之下表面成為朝向塗佈輥乃 與輔助輥74接觸之部分而向下傾斜之面，因此，較佳為藉 由塗佈輥73之旋轉與重力之作用而可更有效地將自送出方 向下游側供給之帶電防止劑導引向液體積存部81 ^其結 果，可減少帶電防止劑之浪費。由此，可抑制帶電防止劑 之成分之增加、製造裝置之污染、以及積層樹脂片材53之 處理性之降低等。 進而，藉由於積層樹脂片材53之上表面76上塗佈帶電防 止劑，可對所製造之積層樹脂板9充分地賦予帶電防止性 月。因此，完全沒必要於片材之原料樹脂中調配帶電防止 劑，或者即便調配，亦係少量即可。其結果，可抑制積層 樹脂板9之變色、積層樹脂板9之表面狀態之降低。 又，於塗佈輥73之圓周面77由橡膠材料形成之情形時， 以塗佈輥73擠壓積層樹脂片材53之上表面76時，可與半圓 凹凸部17之形狀吻合而使圓周面77變形。藉此，由於可使 153329.doc •27- 201132419 圓周面77亦深入半圓 牛圓凹凸部17之凹條19中，因，匕 勻地塗佈帶電防止劑。 J更勺 二’由於為橡膠材料’因此，即便長時間使用後，亦可 減少由與積層樹脂片材53之接觸而引起之圓周面77側之塗 2輥3之磨抽量。因此，可長時間穩定地將帶電防止 佈於積層樹脂片材53上。 ·" 又’當於轉印步驟中在積層樹脂片材53之送出方向上形 成有多條平行之條紋狀之半圓凸條18與凹條η之情形時， 於塗佈步驟中，以使半圓凸條18及凹條邮親之旋轉方向 上成為平行之方式水平搬送積層樹脂片材53。因此，可使 *塗佈於積層樹脂片材53之半圓凹凸部17上之帶電防止劑沿 著積層樹脂片材53之送出方向更均勻地擴展。 又’於表面上形成有多條高度15〇㈣以上之凸條之通常 之樹脂片材中’即便於其表面上滴下帶電防止劑，所滴下 之帶電防止劑亦會被凸條堵住中而無法均勻地分佈於面 内。相對於此，於上述實施方式之方法中，即便對具有高 度150 μπι以上之半圓凸條18之積層樹脂片材53，亦可均勻 地塗佈帶電防止劑。 以上，對本發明之一實施方式進行了說明’但本發明亦 可進而以其他實施方式進行實施。 例如，樹脂板並不限定於例如積層樹脂板9般之3層樹脂 板，亦可為單層樹脂板、2層樹脂板、包含4層以上之層之 樹脂板。 又’作為本發明之製造方法中所使用之表面塗佈液，例 153329.doc 28· 201132419 如並不限定於如上述之界面活性劑般之帶電防止劑層形成 用塗佈液，可適用撥水層形成用塗佈液、防污硬塗層形成 用塗佈液等需要均勻地塗佈之各種塗佈液。 又’例如’於上述之實施方式巾，多個半圓凸條18於前 表面側之主面16上以沿著一個方向互相平行地延伸之柱面 鏡形狀而形成（一維型）（參照圖3)，但例如，亦可於前表面 側之主面16上以沿著不同之兩個方向（例如，相互垂直之 兩個方向）分別互相平行地延伸之柱面鏡形狀而形成（即， 亦可為二維型）。 又，半圓凹凸部17 ’例如亦可於長度方向上以不連續之 多個半圓凸條互相離開之狀態排列。 又，於上述之實施方式中’以半圓凸條以之切剖面之輪 廊形狀為半圓弧狀進行了說明，但並不限定於半圓弧狀， 例如’亦可為相當於將圓柱體於不含其軸線之平面切斷時 之任意-方之構件之形狀。χ，亦可為v字形、半糖圓弧 形、扁平脊曲線狀等。即，「半圓凸部」這個詞，亦可以 包括該形狀之凸部之意思使用。 例如右為輔助搬送或者積層樹脂片材53與擠;1輥 63〜65之來技十±曰丄 λ ，亦可設置有與積層樹脂片材53及各轉 =㈣轉印模68及凹版轉印模顯觸之輥（接觸輥）。 又’於上述中’藉由轉印法形成樹脂片材之凹ώ，但即 ^藉由其他方法形成，亦可實施。又，即便為對朝水平以 卜之方向搬送之樹脂片材進行塗佈液之塗佈，亦可實施， Ρ便於樹知片材之下表面塗佈塗佈液，亦可實施。 153329.doc -29. 201132419 又’上述積層樹脂板9較佳為用作背光源用之光擴散 板’但並不特別限定於該用途。 又’上述背光源2較佳為用作液晶顯示器用之面光源裝 置’但並不特別限定於該用途。 [實施例] 接著’基於實施例及比較例對本發明進行說明，但本發 明並不限定於下述之實施例。 <積層樹脂片材之原料> 準備以下（1)〜（8)之材料作為積層樹脂片材之原料。201132419 VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a method of producing a coated resin sheet. [Prior Art] A resin sheet having a shape transferred on the surface is a sheet obtained by continuously extruding a raw material resin from a die in a heated molten state to form a continuous resin sheet, and transferring The concave-convex shape of the mold is transferred onto the resin sheet. The transfer of the uneven shape is carried out, for example, by sandwiching a resin sheet between the squeeze roll and the transfer die, and pressing the surface of the sheet with a transfer die. As a use for transferring a sheet having a shape on a surface, for example, a member for construction or the like is known. In recent years, the use as various optical members incorporated in backlight devices for liquid crystal displays has become widespread. In the backlight device, the resin sheet is used, for example, as a light diffusing plate for uniformly diffusing light emitted from the light source toward the front surface side, and is attached to the light box provided with the light source so that the uneven surface faces the front surface side. On the open side, the other side is filled with heat in the device due to the illumination of the light source. Therefore, in the backlight device, it is necessary to provide a ventilation mechanism for replacing the air to cool the inside of the device. However, when a ventilating mechanism is provided, money and dust (hereinafter referred to as "dust or the like") may be infiltrated into the device from the outside via a ventilating mechanism, and dust or the like may adhere to the uneven surface of the light diffusing plate sporadically. In addition, when the light source emits light in a state in which dust or the like adheres to the liquid crystal cell, dust or the like which adheres unevenly is observed through the liquid crystal cell, thereby causing deterioration in image quality 153329.doc 201132419 thereby reducing dust and the like. For example, a method of maintaining the charging prevention performance of the light-diffusing sheet by forming a coating layer containing a charge preventing agent on the surface of the light-diffusing sheet has been proposed (for example, refer to Japanese Laid-Open Patent Publication No. 2007-178544) In Patent Document 1, for example, after a light diffusing plate is produced, a coating layer is formed by applying a surfactant (charge preventing agent) on the surface of the light diffusing plate by a roll coating method. In addition, as a method of forming a light-diffusing sheet, a method of preparing a charge preventing agent in a raw material resin of a light-diffusing sheet is proposed (for example, refer to Patent Document 2: 曰本特开2〇) 〇 4_18447 〇 公报 bulletin). However, when the surface of the light-diffusing sheet has a concavo-convex shape, even if the anti-static agent is applied to the uneven surface in accordance with the method exemplified in Patent Document 1, the anti-static agent is blocked by the uneven shape and cannot be uniformly The bad situation of proliferation. As a method for solving this problem, a method of dropping a large amount of the charge preventing agent onto the uneven surface, thereby causing the charging preventive agent to overflow from the concave portion of the uneven shape and spread over the surface. However, there are other disadvantages: the amount of the anti-static agent becomes large and the cost increases, or the excess anti-static agent contaminates the manufacturing apparatus of the light-diffusing sheet, or the anti-static agent does not dry completely to treat the light-diffusing sheet. It has become difficult. On the other hand, in the method exemplified in Patent Document 2, depending on the amount of the antistatic agent, there is a problem that the resin sheet is discolored or the resin sheet (light diffusion) is caused by the overflow of the 153329.doc 201132419 antistatic agent. The surface state of the board) is deteriorated. The object of the present invention is to provide a method for producing a coated resin sheet which can uniformly apply a surface coating liquid to the uneven surface of a resin sheet even if the surface coating liquid is not used in a large amount. A method for producing a coated resin sheet of the present invention, comprising the steps of: forming irregularities on one surface of a resin sheet; transferring the resin sheet on which the irregularities are formed; and the above-mentioned resin sheet being conveyed Applying a surface coating liquid to one surface, and the coating step includes: pressing a circumferential surface of the coating roller with respect to the one surface of the resin sheet to be conveyed; and contacting a circumferential surface of the auxiliary roller with the coating roller a circumferential surface; the coating roller is rotated in a direction in which the contact portion with the resin sheet is moved in the conveying direction of the resin sheet; and the auxiliary roller is rotated in a direction opposite to the coating roller; The coating liquid is supplied to the liquid storage portion, and the liquid storage portion is between the application roller and the auxiliary roller, and the coating roller and the auxiliary The contact portion of the auxiliary roller is formed on the upstream side in the rotation direction of the coating roller and the auxiliary roller. According to the method of the present invention, the liquid volume portion is formed between the coating roller and the auxiliary roller. The surface coating liquid in the liquid volume is continuously attached to the circumferential surface (roller circumferential surface) of the coating roller passing through the liquid volume by the rotation of the coating roller, and passes through the contact portion of the coating roller and the auxiliary chain. The coating amount is adjusted until the contact position between the application roller and the resin sheet reaches 153329.doc 201132419, and is adhered to the circumferential surface of the roller. Further, the resin sheet is attached to the contact position. The surface of the concave-convex surface (one surface) is adhered to the circumferential surface of the coating of the surface coating liquid (4). The surface of the resin sheet is coated with the surface (4) and the surface is coated (4) onto the uneven surface. 'When the resin sheet passes through the coating roll, the surface coating liquid can be uniformly coated because the entire uneven surface of the resin sheet and the surface coating liquid adhering to the circumferential surface of the coating roll are flawlessly touched. Resin On the surface of the uneven surface of the material. 'Because the surface coating liquid is not used in a large amount, the coating amount of the surface coating liquid is adjusted at the contact portion of the coating sheet and the auxiliary roller, and the surface coating liquid is less wasted due to & Therefore, the potting agent for the surface coating liquid can suppress the increase in the cost of the coating liquid, the (4) of the manufacturing apparatus, the lowering of the rationality of the fat sheet, etc. Therefore, in the method of the present invention, it is preferred. The resin sheet is horizontally conveyed, and the one surface is an upper surface. In the method of the present invention, it is preferable that the auxiliary roller is disposed to be in contact with the shaft including the coating roller and the coating roller. On the plane of the line of the resin sheet, the plane including the axis of the coating roller and the axis of the auxiliary roller is inclined toward the upstream side in the conveying direction of the resin sheet around the axis of the coating roller. In the method, since the auxiliary roller is disposed at an angular position inclined with respect to the upstream side of the coating roller in the conveying direction, the auxiliary roller contacts the lowermost side of the circumferential surface of the coating roller, thereby assisting Roll circle The liquid volume formed by the circumferential surface and the circumferential surface A of the coating roller is opened on the downstream side 153329.doc 201132419, and at least the lower surface of the liquid volume formed by the upper surface of the coating roller can be formed. A part becomes a surface which is inclined downward toward a portion where the application roller 73 and the auxiliary roller are in contact with each other. Thereby, the supplied surface coating liquid can be efficiently guided to the liquid reservoir by the rotation of the coating roller. As a result, the waste of the surface coating liquid can be made less. Further, in the method of the present invention, it is preferable that the surface coating liquid is supplied to the liquid storage portion from the downstream side in the conveying direction of the resin sheet. Thus, the supplied surface coating liquid can be efficiently guided to the liquid reservoir by the rotation of the coating roller. Further, in the method of the present invention, it is preferable that the circumferential surface of the coating roller is formed of a rubber material. When the circumferential surface of the cloth roll is formed of a rubber material, when the uneven surface (square surface) of the resin sheet is pressed by the coating roll, the circumferential surface of the roll can be deformed in accordance with the shape of the uneven surface. Thereby, the circumferential surface of the roller can be made to penetrate into the concave portion of the uneven surface. Thus, the surface coating liquid can be applied more uniformly. m,; is a rubber material', therefore, even after prolonged use, it is also 曰. The abrasion of the circumferential side of the stick caused by the contact of the sheet of the tree and the moon can stably apply the surface coating liquid to the resin sheet for a long period of time, in which the above-mentioned unevenness has the above-mentioned tree Two West: A plurality of ridges and grooves extending in the direction of transport, and each ridge and the groove are misconfigured. The surface coating liquid applied to the surface of the resin sheet extending in the feeding direction of the resin sheet is conveyed along the sheet 153329.doc 201132419. In the method of the present invention, preferably the above & The height of the bar is 15 〇 μιη or more. However, even if the height of the ridges is not 150 (four) or more, the above effects by the method of the present invention can be exhibited. For example, when the height of the ridge is 5 〇 μπ or more and less than 150 μm, the effect of the present invention can be favorably exhibited by appropriately adjusting the conveying speed of the resin sheet. When the height of the ridge is 150 μηι or more, even if the surface coating agent is dropped on the concave & the surface coating agent dropped is blocked by the ridges and the diffusion is spread in the plane. On the other hand, in the method of the present invention, the surface coating agent can be uniformly applied to the resin sheet having the ridges having a height of 15 Å or more. Further, in the method for producing a surface-shaped transfer resin sheet of the present invention, it is preferred that the surface coating liquid contains a charge preventing agent. Further, it is preferred that the charge preventing agent contains a surfactant. The method of the present invention is suitable for various trees for imparting charge prevention performance, such as a light diffusing plate that diffuses incident light by fine concavities and convexities, and is coated with a charge preventing agent when a charge preventing agent is used as a surface coating liquid. On the surface of the resin sheet, it is possible to sufficiently impart charging prevention performance to the resin material to be produced, and it is not necessary to provide a charging inhibitor in the original (four) month of the sheet. The installation of m people can make the deployment a small amount, that is,,. As a result, the deterioration of the deformation of the resin sheet can be suppressed. The surface of the sheet and the sheet according to the present invention, even if the surface coating liquid of Table 153329.doc 201132419 is not used in a large amount, the surface coating liquid can be uniformly applied to the resin sheet. On the surface of the fine bumps. [Embodiment] <Overall Configuration of Liquid Crystal Display> Fig. 1 is a schematic side view of a liquid crystal display. Fig. 2 is a perspective view of a liquid crystal display. The liquid crystal display 1 is a so-called direct type liquid crystal display including a backlight 2 and a liquid crystal panel 3 disposed on the front surface of the backlight 2. Further, in Fig. 1 and Fig. 2, for the sake of convenience, the liquid crystal display j is represented with its front side toward the upper side of the paper. Further, the scales of the respective constituent members such as the liquid crystal display 1, the backlight 2, and the liquid crystal panel 3 shown in the following drawings are separately set for convenience of explanation, and the scales of all the constituent members are not the same. The backlight 2 includes a thin box-shaped resin light box 6 having a square plate-shaped rear wall 4 and four square-shaped side walls 5 integrally standing from the periphery of the rear wall 4 to the front, and the front surface side is open; A linear light source? It is disposed in the light box 6, and a laminated resin sheet 9 which blocks the open surface 8 (front surface) of the light box 6. That is, in the case of the box-shaped light box 6, the outline of the open surface 8 is formed by the square-shaped side wall 5, and the cable is arranged in the space surrounded by the side wall 5 and the dh 2 wall 4 Shape light source 7. For example, light incident on the side of the rear wall 4 by the reverse light source 7 reflected from the side of the open surface 8 of the inner surface of the rear wall 4 of the light box 6 is attached to the housing plate (not shown). The linear light source 7 is, for example, a cylindrical lamp having a diameter of 2 mm to 4 mm. 153329.doc 201132419 The linear light sources 7 are spaced apart from each other with respect to the back surface of the laminated resin sheet 9 (main surface 20 to be described later). The state in which the states are parallel to each other and disposed at the same interval is 0. The distance L between the centers of the adjacent linear light sources 7 is preferably 10 _ or more. Further, from the viewpoint of the thinning, the distance d between the back surface (the main surface 20 to be described later) of the laminated resin sheet 9 and the center of the linear light source 7 is preferably 50 mm or less. Further, the ratio (L/d) of the interval L to the distance d is preferably 〇, and particularly, the interval L between the adjacent linear light sources 7 is preferably 1 〇 mm to 100 mm, and the back surface of the laminated resin sheet 9 The distance d between the main surface 20 (to be described later) and the center of the linear light source 7 is preferably 3 mm to 5 cm. Further, the distance f between the center of the linear light source 7 and the inner surface (reflecting plate) of the rear wall 4 of the light box 6 is, for example, 2.0 mm to 1 〇.〇 mm. Further, as the linear light source 7, for example, a known tubular lamp such as a fluorescent tube (cold cathode tube), a halogen lamp, or a crane lamp can be used. Further, as the light source of the backlight 2, a point light source such as a light-emitting diode can be used instead of the linear light source 7. The liquid crystal panel 3 includes a liquid crystal cell 10 and a pair of polarizing plates U and 12 sandwiching the liquid crystal cell 10 from both sides in the thickness direction. The liquid crystal panel 3 is disposed on the front surface of the backlight 2 such that one of the polarizing plates 11 and the laminated resin sheet 9 face each other. As the liquid crystal cell 10, for example, a well-known liquid crystal cell such as a TFT (Thin Film Transistor) liquid crystal cell or an STN (Super Twisted Nematic) liquid crystal cell can be used. Further, various optical films and diffusion films may be inserted between the liquid crystal panel 3 and the laminated resin sheet 9. 153329.doc 201132419 <Configuration of laminated resin sheet> Fig. 3 is a schematic perspective view of a laminated resin sheet. Fig. 4 is an enlarged cross-sectional view showing an essential part of a light box in which a laminated resin plate and a light box are mounted. As shown in Fig. 3, the laminated resin sheet 9 is formed in a square plate shape substantially the same as the frame shape of the side wall 5 of the light box 6. The laminated resin sheet 9 is a three-layer diffusion sheet in which light transmittance of three resin layers is laminated in the thickness direction, and includes a relatively thick base material layer 13 and sandwiching the base material layer 13 from both sides in the thickness direction. A relatively thin pair of surface layers 14, 15. The laminated resin sheet 9 has a semicircular concavo-convex portion 17 as a fine concavities and convexities on the main surface 丨6 on the front surface side. The semicircular concavo-convex portion 17 includes a semicircular rib 18 of a cylindrical mirror shape extending in a stripe shape between the pair of circumferential layers of the laminated resin sheet 9 and a concave strip between the adjacent semicircular ribs 18 9. Further, the number of the semicircular ridges 8 and the recesses 19 in the following figures is set separately for convenience of explanation, and is not limited to the number shown in the drawings. The width W of the semicircular rib 18 is, for example, 1 〇 μηη to 5 〇〇 μιη, preferably brother μηι to 400 μιη. Further, the height Η of the semicircular rib 18 is, for example, ι 〇 or more, preferably 50 μ ΐΠ or more, more preferably 15 〇 μηη or more, and still more preferably 15 〇 μ ΓΒΜΟΟ μηη. Further, as a specific value of the width w and the height η of the semicircular rib 18, W = 400 μm and Η = 2 〇〇 μπι can be exemplified. Here, the values of the width w and the height Η are not limited to this β in the semicircular concave and convex portion 17, and the plurality of semicircular ridges 18 are arranged in parallel with each other and are disposed at the same interval 例如 (for example, ! μηη to 丨5 μιη). . The distance between the apexes of the adjacent semicircular ribs 18 (pitch ρ) is, for example, 1 〇 μιη to 5 (9) 153329.doc • 12· 201132419 is preferably 50 μηι to 400 μπι. Further, the ratio (Η/P) of the height H of the semicircular ribs 18 with respect to the pitch 例如 is, for example, 0.2 to 0.8. Further, a charge preventing agent is applied to the main surface 16 on the front side before the semicircular uneven portion 17. The charge inhibitor layer can be formed, for example, by applying a coating liquid containing a charge preventive agent or a precursor thereof and a solvent to the semicircular uneven portion i 7 and drying the grain medium. The charge preventing agent is not particularly limited as long as it has a charging preventing function, and is preferably a surfactant. The surfactant is not particularly limited, and examples thereof include alkylsulfonic acid, alkylbenzenesulfonic acid, and Li (lithium) salts, Na (sodium) salts, Ca (calcium) salts, and Mg (magnesium) salts. An anionic surfactant such as Zn (zinc) salt, olefin sulfate or a metal salt thereof, or a higher alcohol phosphate; tertiary amine, quaternary amine salt, cationic acrylate derivative, cationic vinyl ether a cationic surfactant such as a derivative; an amphoteric salt of an alkylamine-based betaine; an amphoteric salt of a carboxylic acid or a sulfonic acid alanine; an amphoteric surfactant such as an amine oxide; a fatty acid polyol ester, an alkyl group (amine) a nonionic surfactant such as a polyoxyethylene adduct. These may be used singly or in combination of two or more. In addition, from the viewpoint of the durability of the charging prevention performance of the semicircular concavo-convex portion 17, it is preferable to use an amphoteric surfactant, and more preferably an amine oxide surfactant. On the other hand, the laminated resin sheet 9 has a rough surface portion 21 formed with a plurality of fine irregularities on the main surface 2〇 on the back surface side. The rough surface portion 21 is a rough surface having an embossed shape which is substantially uniformly distributed on the entire main surface 20 on the back surface side. The uneven shape of the chain surface 2 can be expressed, for example, by the roughness of the surface. For example, the arithmetic mean roughness Ra of the rough surface portion 21 is, for example, a value measured based on Jis B0601-2001, which is 〇, 8 gm 〜5. 〇, preferably j 〇μιη~4· 0 μπι. Further, the ten point average coarse sugar level 2 of the chain surface portion 2 1 is, for example, a value measured based on JIS Β0601-2001, and is preferably 8.0 μΓη to 3〇〇 μηη' 8.0 μπι 20.0 μηι. Further, the average interval Rsm of the rough surface portions 21 is, for example, a value measured based on JIS B0601-2001, and is 1 〇〇μηι 4 4 μm ηη, preferably 200 μηι 〜400 μηι 〇, as shown in Fig. 4, plus The thickness ti of the base material layer 13, the thickness h of the surface layer 14 on the back surface side, and the thickness b of the surface layer 〖5 on the front surface side, and the total thickness T of the laminate layer 9 is, for example, 〇. 1 mm~10 Mm is preferably from 1 mm to 4.0 mm. Further, the thickness t of the base material layer 13 is, for example, 〇 5 mm to 9 〇 mm ', preferably 0.9 mm to 3.0 mm. Further, the thickness t2 of the surface layer 14 on the back surface side is, for example, 〇.〇3 mm to 1.0 mm, preferably 〇〇5 mm to 〇". Further, the thickness t3 of the surface layer 15 on the front surface side is, for example, 〇〇〇 Mm, preferably 〇, 〇mm~mm. That is, the surface layer 15 on the front surface side may not be formed. In this case, the laminated resin sheet 9 is a two-layer light diffusion sheet in which the light-transmitting layer of the relatively thick base material layer 13 and the relatively thin surface layer 14 is laminated. In the case of a two-layer light diffusing plate, the semicircular uneven portion 17 is formed on the main surface on the front surface side of the base material layer 13. The material of the laminated resin sheet 9 is not particularly limited, and for example, a known light-transmitting resin can be used. Examples of the light-transmitting resin include an acrylic resin, a styrene resin, polycarbonate, polyethylene, polypropylene, a cyclic polyolefin, a cyclic olefin copolymer, and polyethylene terephthalate. MS resin (mercaptoacrylic acid 153329.doc •14-201132419 methyl ester-styrene copolymer resin), ABS resin (four)^丨(10)^e ebutadiene Styrene resin, acrylonitrile_butadiene_styrene copolymer resin), AS resin (acryl〇nitrile styrene c〇p〇lymer), acrylonitrile-styrene copolymer resin, etc. The above-mentioned translucent resin may be used singly or in combination of two or more. A styrene-based resin is used, and a styrene-based resin is used alone. Further, a resin used as a raw material of the substrate layer 13 and a resin used as a raw material of the surface layers 14 and 15 (Β) In addition, the light-diffusing agent (light-diffusing particle) may be contained in the laminated resin sheet 9 as needed. The light-diffusing agent is refracted as a light-transmitting tree moon constituting the laminated resin sheet 9. Rate is different' and can be diffused and transmitted The particles of light are not particularly limited, and examples thereof include inorganic calcium diffusing agents, and examples thereof include calcium carbonate, sulfuric acid pin, titanium oxide, cesium hydroxide, cerium oxide, glass, talc, mica white carbon, and U匕 town. An inorganic-based light-diffusing agent which has been subjected to a surface treatment with a fatty acid or the like. For example, examples of the organic light-diffusing agent include styrene-based polymer particles and acrylic polymer particles. The oxime-based polymer particles 较佳 are preferably high molecular weight polymer particles having a weight average molecular weight of 50,000 to 50,000, and a colloid ratio of 1% by weight or more when dissolved in acetone. The above-mentioned light diffusing agent may be used singly or in combination of two or more. When the laminated resin sheet 9 contains a light diffusing agent, the light diffusing agent is adjusted to 153329.doc 15 201132419 The ratio 'is relative to 1 〇〇 The light-transmitting resin of the weight part is 1 part by weight to 1 part by weight of 'preferably ^ (2 parts by weight to 0 2 parts by weight. Further, 'the light diffusing agent can be used as the light-transmitting resin described above Masterbatch From the viewpoint of light diffusibility, the absolute value of the difference between the refractive index of the light-transmitting resin and the refractive index of the light diffusing agent is usually 0.01 to 0.20, preferably 0.02 to 0 15. Further, a resin plate can be laminated as needed. 9 is added with various additives such as an ultraviolet absorber, a heat stabilizer, an antioxidant, a fuel, a light stabilizer, a fluorescent whitening agent, a processing stabilizer, etc., in the case of adding a UV absorber, relative to 100 parts by weight. In the light-transmitting resin, it is preferable to add 〇·1 part by weight to 3 parts by weight of the ultraviolet absorber. The range of the above-mentioned range 'can suppress the bleeding of the ultraviolet absorber to the surface, and the laminated resin sheet 9 can be favorably maintained. The appearance. Further, in the case where a heat stabilizer is further added, it is preferable to add a heat stabilizer in a ratio of 2 parts by weight or less to 1 part by weight of the ultraviolet absorber in the light-transmitting resin; relative to the light-transmitting resin The UV absorber is preferably 1 part by weight, more preferably 1 part by weight to 1 part by weight of a heat stabilizer. Further, when the light stabilizer is further added, it is preferable to add a light stabilizer of from 01 part by weight to 1 part by weight based on 100 parts by weight of the light-transmitting resin. Further, the 'stacked resin sheet 9 is not as shown in Fig. 4', and the semicircular concave-convex portion 17 is parallel to the linear light source 7 in the light box 6, so that the back surface (main surface 20) of the laminated resin sheet 9 and the light box 6 are The side wall 5 abuts and is fixed to the light box 6. Thereby, the open surface 8 of the light box 6 is blocked by the laminated resin sheet 9. <Manufacturing Method of Laminated Resin Sheet (Laminated Resin Sheet)> The above laminated resin sheet 9 can be produced by cutting a laminated sheet of 153329.doc-J6-201132419 resin sheet produced by the following method. Fig. 5 is a schematic configuration diagram of a manufacturing apparatus used in a method for producing a laminated resin sheet according to an embodiment of the present invention. Fig. 6 is an enlarged perspective view of an essential part of a manufacturing apparatus for a laminated resin sheet. The sheet manufacturing apparatus 51 includes a sheet forming machine 52 which extrudes and forms a raw material resin in a sheet shape, and a laminated roller for forming the laminated resin sheet 53 which is extruded by extrusion. A group 54; a coating roller group 55 for applying a charging preventing agent to the formed laminated resin sheet 53; and a pair of extraction roller groups 56 for extracting one of the laminated resin sheets 53. The sheet forming machine 52 includes: a first extruder 57 for heating and melting the raw material resin (a) of the substrate layer 3; and a second heating and melting of the raw material resin (B) of the surface layer 14 An extruder 58; a feed block (10) supplied with a resin melted by the first extruder 57 and the second extruder 58; and a mold for extruding the resin in the feed block 59 in a sheet state head. As the first extruder 57, the first extruder 58 ▲ ” ” an extruder 58 can be used, for example, a uniaxial extruder or a twin-screw extruder to prepare a molding machine. The funnels 61 and 62 are attached to the extruder 57 and the second extruder 58. (10) The resin crucible 59 is introduced into the extruder, as long as the two types can be compositely extruded in a laminated state. The second feed is supplied to the die at 6°, and is limited by two types of three-layer distribution type, two types, for example, as a model, and only a well-known feed block. The manifold group 54 has the following mechanism and includes a wire. 65, s I53329.doc -17. 201132419 The roller group 54 for extrusion presses the laminated resin sheet 53 by extrusion, while borrowing The upper surface 75, 76 of the laminated resin sheet 53 is formed by a transfer mold (the upper surface 76 is the main surface 16 on the front surface side of the laminated resin sheet 9, and the lower surface 75 is the main surface 2 on the back surface side of the laminated resin sheet 9) Bumps are formed on the 〇). The three pressing rolls 63 to 65 are sequentially named as the upper roll 63, the intermediate roll 64, and the lower roll 65 from the top, and each has a cylindrical metal (for example, stainless steel, steel, etc.) rolls, and each axis becomes horizontal and The axes of the mutual axes are arranged in parallel in the vertical direction. Motors (not shown) are respectively connected to the rotating shafts of the pressing rolls 63 to 65, the upper rolls 63 and the lower rolls 65 are rotatable counterclockwise, and the intermediate rolls 64 are rotatable clockwise. That is, the squeezing rollers 63 to 65 are "reversible clockwise rotation", "clockwise rotation", and "reversible hour hand rotation" from the top. By this, since all of the rollers 63 to 65 can be synchronously rotated while sandwiching the laminated resin sheet 53, the both surfaces 75 and 76 of the laminated resin sheet 53 extruded from the sheet forming machine 52 can be processed simultaneously. The conveyance is carried out by the application roller group 55 to the extraction roller group 56. The straight position of each parent is, for example, 1 〇〇mm to 5〇〇mrn. Further, when a metal roll is used as the pressing rolls 63 to 65, a plating treatment such as chrome plating, copper plating, nickel plating, or Ni-P plating may be applied to the surface. The circumferential surface 66 of the upper roller 63 is smoothed by, for example, mirror processing. A rough surface transfer mold 68 for forming a rough surface portion 21 on the laminated resin sheet 53 is attached to the circumferential surface 67 of the intermediate roller 64, for example. A plurality of embossed shapes of the chain transfer mold 68 having fine concavities and convexities opposite to the rough surface portion 21 of the main surface 20 on the back surface side of the laminated resin sheet 9 are formed on the circumferential surface 67 of the intermediate roller 64 of 153329.doc 201132419 . That is, the surface of the rough transfer mold 68 is a tread having a fine uneven shape and an embossed shape which is substantially uniformly distributed over the entire surface, and has an arithmetic mean roughness Ra of, for example, 6.0 μm to 8.0 μm, and a ten-point average roughness. The degree Rz is, for example, 45.0 μm to 50.0 μm, and the average interval Rsm is, for example, 12 0 μπι to 1 50 μm. A gravure transfer mold 70 for forming the semicircular concave and convex portion 17 on the laminated resin sheet 53 is attached to the circumferential surface 69 of the lower roll 65. In the intaglio transfer mold 70, as shown in Fig. 6, the groove 71 opposite to the cylindrical mirror-shaped semicircular ridge 18 is formed in a plurality of stripe shapes along the circumferential direction of the lower roll 65. That is, the cut section of the groove 71 orthogonal to the longitudinal direction (circumferential direction) has a substantially semicircular arc shape. The distance between the centers of the adjacent grooves 71 can be appropriately set according to the shape of the semicircular ridges 8. Further, the rough transfer mold 68 may be attached to the lower roll 65, and the gravure transfer mold 70 may be attached to the intermediate roll 64. Further, the circumferential surface 67 of the intermediate roller 64 can be smoothed by mirror processing. In this case, the main surface 2〇 on the back surface side of the laminated resin sheet 9 becomes a smooth surface. As the raw material of the rough transfer mold 68 and the intaglio transfer mold 7, for example, an organic material can be used. The organic material may be an organic material having a heat-resistant property that maintains the shape of the transfer mold even if the resin sheet 53 extruded from the die 60 is extruded in a refining state in a refining state. Examples of the resin such as a thermosetting resin or a thermoplastic resin: β (thermal) resin may be exemplified by benzene (tetra) resin, epoxy resin, triamine tree, urea resin, and polyimide resin (4) - averaging 153329.doc • 19-201132419 β, unsaturated polyester resin, alkyd resin, etc. As the thermoplastic resin, for example, a stupid vinyl resin, an acrylic resin, a polyethylene resin, a polypropylene resin, a cyclic olefin polymer resin, Acrylonitrile-butadiene-styrene resin (ABS resin), polyethylene terephthalate (PET (polyethylene terephthalate) resin), polycarbonate (polycarbonate resin), polyether Sulfone resin (PES (polyether sulfone) resin), thermoplastic polyimine resin (ρι resin), and the like. From these, it is preferable that the Vicat softening point (JIS K7206-1999 A50 method) is higher than the Vicat softening point of the laminated resin sheet 53 extruded from the die 60 by 40 ° C or more. Resin, crosslinked thermoplastic resin. As a specific example of the organic material, a film made of an organic material having the above-described reverse type transfer mold can be used as a rough transfer mold 68 and a gravure transfer mold 70 〇 an organic material film (rough surface transfer mold 68 and The thickness of the gravure transfer mold 7) is, for example, 0.05 mm to 5 mm. When the thickness is in the above range, the laminated tree θ sheet 5 3 can be favorably transferred. The mechanism for applying the coating liquid for forming a charging preventive layer to the surface 76 of the one surface of the laminated resin sheet 53 which is sent and conveyed by the roller group μ for self-pressing is included in the coating roller group 55. Rollers 72 to 74. Each of the three rollers 72 to 74 includes a cylindrical metal (e.g., stainless steel, steel, etc.) roller, and the respective axes are continuously arranged in the vertical direction so as to be parallel to the axes of the pressing rollers 63 to 65. The two rollers 72 to 74 are sequentially from the lower side: a support roller 72 that abuts the laminated resin sheet 53 153329.doc 201132419 from the lower side; the laminated resin sheet 53 is sandwiched and opposed to the support roller 72, and from the upper side The application roller 73 that is in contact with the laminated resin sheet 53 and the auxiliary roller 74 that is disposed obliquely above the application roller 73 and that abuts against the application roller 73. The support roller 72 is disposed such that its upper end is located at the same height as the lower surface of the resin sheet 53 which is in contact with the lower end of the lower roller 65. Thus, since the coating liquid for forming a charge preventing agent layer can be applied in a state where the laminated resin sheet 53 fed from the lower roll 65 is supported at the height just sent out, the operability of coating can be improved. The support member 72 is a free roller which is in contact with the lower surface 75 of the laminated resin sheet 53 to be passively rotated by contact with the surface of the resin sheet 53 to be conveyed. The application roller 73 is connected to a motor (not shown) and is actively rotated counterclockwise to perform the same horizontal position as the contact position (contact position) of the support roller 72 of the laminated resin sheet 53 from the upper side. It is in contact with the upper surface 76 of the laminated resin sheet 53. In order to sandwich the resin sheet 53 from both sides by the coating roller 73 and the supporting roller 72, the circumference of the coating roller 73 faces the upper surface of the resin sheet 53 to be pressed. Further, similarly to the support roller 72, the application roller 73 may be a free roller that is passively rotated by contact with the conveyed resin sheet 53. The circumferential surface 77 of the coating roller 73 is preferably formed of a rubber material. The rubber material is, for example, a rubber material having a hardness of A3 〇 to A90 measured according to JIS K6253, specifically, an NBR rubber or the like. For example, by mounting the rubber sheets on the circumferential surface 77, the circumferential surface can be obtained. 77 is made of rubber. Further, it is preferable that the circumferential surface 77 of the application roller 73 has a shape in which the axial center portion is raised from both end portions by, for example, convex processing. The auxiliary roller 74 is connected to a motor (not shown) and can be actively rotated in a direction clockwise '153329.doc • 21 · 201132419, ie, 相反 in the opposite direction to the coating 73. Further, the auxiliary roller 74 may be a free roller that is rotatably rotated by contact with the rotating coating roller 73 in the same manner as the branch roller 72. Further, the auxiliary roller 74 is disposed such that the second flat surface 79 including the shaft of the coating roller 73 and the shaft of the auxiliary roller 74 is in contact with the shaft including the coating roller 73 and the coating roller 73 in contact with the laminated resin sheet 53. The first flat surface 78 is inclined toward the upstream side in the conveying direction of the laminated resin sheet 53 around the axis of the coating roller 73. The circumferential surface of the auxiliary roller 74 is in contact with the circumferential surface 77 of the coating roller 73. Specifically, the auxiliary roller 74 is in contact with the coating roller in such a manner that the second plane 79 including the axis of the auxiliary roller 74 and the axis of the coating roller 73 forms an angle θ with the first plane 78 (hereinafter sometimes) The angle θ) between the auxiliary roller 74 and the application roller 73 is, for example, ι. ~9〇. Preferably, it is 15 & More preferably, it is 20° to 35°. The auxiliary roller 74 is in contact with the coating roller 73. The application roller 73 is formed on the upstream side between the application roller 73 and the auxiliary roller 74 and on the upstream side in the rotation direction of the application roller 73 and the auxiliary roller 74 with respect to the portion where the application roller 73 and the auxiliary roller 74 are in contact with each other. The circumferential surface 77 of the auxiliary surface of the auxiliary roller 74 and the circumferential surface 8 of the auxiliary roller 74 are divided into a liquid volume portion 8ι extending in the axial direction of the rollers 72 to 74. The auxiliary roller 74 is inclined at an angle of 0 gt and is in contact with the coating roller 73, and the liquid reservoir 81 can be opened to the downstream side in the sheet feeding direction, and the liquid formed by the upper surface of the coating roller 73 can be formed. At least a part of the lower surface of the reservoir 81 is inclined downward toward the portion where the coating roller 73 contacts the auxiliary roller 74. Further, the material of the circumferential surface 8 of the auxiliary roller 74 is preferably the circumference of the coating roller. The surface of the surface of the auxiliary roller 74 is preferably made of a rubber material. Further, the material of the circumferential surface 8 of the auxiliary roller 74 may be made of sponge 153329.doc -22·201132419. The circumferential surface 80 of the auxiliary roller 74 preferably has a shape in which the axial center portion and both end portions are flat, for example, by planar processing without rounding. By the circumferential surface 77 of the coating roller 73 The convex surface processing and the circumferential processing of the circumferential surface 80 of the auxiliary roller 74 allow the rollers 73 to be in good contact with each other. Above the liquid volume storage portion 8i, in the longitudinal direction of the liquid volume storage portion 81 (application roller 73) Axial) with multiple intervals at the same interval The supply nozzle 82 is supplied to the liquid volume storage unit 8 by supplying the coating liquid for forming the charging prevention agent layer from the supply nozzle 82. The supply nozzle 82 may be provided only in the supply nozzle 82. The supply port 82 is connected to the liquid accommodating portion 83. The liquid accommodating portion is configured to store the charge preventing agent or its precursor and the solvent for the dilution thereof The coating liquid for forming a layer of the agent layer, and the concentration of the antistatic agent or the precursor thereof in the coating liquid in which the ion-exchanged water is contained is, for example, 0 to 1% by weight to 5% by weight, preferably 丨〇. When the 〇 度 ^ ^ ^ ^ 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The extraction roller group 56 includes a pair of extraction rolls μ and 85 sandwiching one of the laminated resin sheets 53 from both sides in the thickness direction. The extraction rolls 84 85 each include a cylindrical metal (for example, a stainless steel steel clothing, etc.) The 153329.doc •23·201132419 mode is oppositely disposed so that the upper end of the lower extraction arm 84 is located at the same height as the lower surface of the resin sheet contacting the lower end of the lower parent 65. The laminated resin sheet 53 which is sent out from the lower roll 65 is horizontally conveyed in a state of being supported at the height immediately after the feeding, so that the conveyance resistance can be reduced. In other words, the support roller 72 and the take-up roller 84 are used to convey the resin sheet. 53. The method of manufacturing the laminated resin sheet 53 using the above-described manufacturing apparatus will be described in the case where the application position of the coating liquid is maintained at the level of the application of the coating roll 73. (1) Sheet manufacturing Step First, the substrate layer 13 is taken up in a funnel 61 of an extruder extruder, which is melt-kneaded and supplied to the feed block 59. On the other hand, the raw material resin (B) of the surface layers 14 and 15 is introduced into the funnel 62 of the second extruder 58, and is melt-kneaded and supplied to the feed block 59. The barrel temperature of the first extruder "and the second extruder 58" is set, for example, to 19 〇〇 c 〜 25 〇. <t. Then, the resin in the feed block 59 is continuously extruded from the die 6 to be continuously extruded as a three-layer laminated resin sheet 53 including the intermediate base material layer 13 and the upper and lower side surface layers 14, 15. Out. (2) Transfer step The laminated resin sheet 53 extruded from the die 60 is formed with irregularities on both surfaces by pressing and cooling with a squeeze roll. Specifically, after the resin extruded from the die 6〇 is extruded by the upper roll 63 and the intermediate roll 64, the lower surface 75 (the main surface 2〇 on the back surface side) is in close contact with the circumference of the intermediate roll 64. The surface 67 is transported and is cooled at this time. The surface temperature of the upper roll 63 and the intermediate roll 64 is preferably lower than the extrusion temperature of the laminated resin sheet 53, and is, for example, 5 Torr to 12 Torr. Further, when the upper roller 63 and the intermediate roller 153329.doc •24·201132419 64 are pressed and squeezed, 'on the lower surface 75 of the laminated resin sheet 53 (the main surface 20 of the back sheet), by the transfer order After the shape of the chain transfer mold μ of the intermediate roller 64 forms a plurality of fine irregularities to form the rough surface portion 2, the laminated resin sheet 53 is held by the intermediate roller 64 and the lower roller. The surface temperature of the lower roll 65 is, for example, thief ~ (2). When the intermediate roller 64 and the lower roller 65 are pressed, the upper surface 76 (the front surface side of the front surface side) of the laminated resin sheet 53 is transferred by the surface shape of the transfer intaglio (4). A plurality of parallel strip-shaped semicircular ribs 18 and concave strips are formed in the flow direction (transport direction) of the sheet. The upper surface 76 of the laminated tree sapphire sheet 53 is in close contact with the circumferential surface 69 of the lower tweezer sheet, and is conveyed to the lower side of the lower roller 65 to the coating roller group 55 to be horizontally fed. (3) Coating step In the coating roller group 55, the coating (four) is rotated in the same direction as the lower roller 65 (counterclockwise rotation), and the auxiliary rotation 74 is opposite to the coating roller 73. : (clockwise) rotation. The rotational speed of the application roller 73 is not particularly limited. The linear velocity set to the circumferential surface is preferably the same as the transport speed of the resin sheet 53. The rotational speed of the auxiliary light 74 is not particularly limited, and is set to the circumferential surface. The linear velocity is preferably the same as the linear velocity of the circumferential surface of the coating roller 73. In the second step, the nozzle 82 is preferably applied from the downstream side in the transport direction of the resin sheet 53 toward the upstream side, and the coating liquid for forming the charge inhibitor layer supplied to the liquid reservoir portion is coated (4). Rotating and continuously adhering to the circumferential surface of the coating light 73 passing through the liquid volume storage portion 81 until the position where the cloth roller 73 abuts on the laminated resin sheet 53 is reached until the coating 153329.doc -25-201132419 is reached. The film is conveyed on the circumferential surface 77. Then, at the position where the application roller 73 is in contact with the laminated resin sheet 53, the coating liquid for forming the charging preventing agent layer is adhered to the upper surface 76 of the laminated resin sheet 53. The circumferential surface 77 is pressed. Thereby, the semicircular uneven portion 17 of the laminated resin sheet 53 is brought into contact with the coating liquid for forming the charging prevention agent layer, and the surface of the semicircular uneven portion 17 is uniformly coated with the charging prevention. The coating liquid for forming the agent layer is formed, and then, if necessary, the solvent is removed from the coating liquid to be applied by a known method to complete the coating of the antistatic agent layer. Further, it is preferably adjusted, for example, by adjustment. The coating roller 73 is in close contact with the auxiliary roller 74 Further, in combination with the total thickness 1 of the laminated resin sheet 53, the gap between the coating light 73 and the support sheet 72 is adjusted to increase or decrease the holding force of the rolls, thereby forming the coating for the charge preventing agent layer. The coating amount of the cloth liquid is adjusted so that the amount of the antistatic agent obtained on the surface after drying, for example, a solvent or the like, is 0.01 g/m 2 to 50 g/m 2 . (4) After the extraction step, the coating is completed. The sheet is taken up by a pair of extraction rolls 84 and 85 to produce a laminated resin sheet 53 which is a resin sheet having a shape on the surface φ and having a coating agent coated thereon with a charge preventing agent. Thereafter, the laminated resin sheet is laminated. After the material 53 is cooled, the material is cut to an appropriate size, whereby the laminated resin sheet 9 can be obtained. (5) The effect is as described above. 'The method of the present embodiment passes the laminated resin sheet 53 which is conveyed. When the coating roller 73 is between the coating roller 72 and the support roller 72, it is formed on the laminated resin 153329.doc • 26 · 201132419. The semicircular concavo-convex portion 17 of the upper surface 76 of the sheet 53 is electrically attached to the circumferential surface 77 attached to the coating roller. The coating liquid for preventing the formation of the agent layer is connected without fail Therefore, the charging preventing agent can be uniformly applied to the semicircular uneven portion 17 of the laminated resin sheet 53. Further, by increasing or decreasing the adhesion between the coating roller 73 and the auxiliary roller 74, the coating roller 73 is further increased or decreased. The holding force of the support roller 72 can adjust the coating amount of the antistatic agent, so that the waste of the antistatic agent is less. Therefore, a small amount of the antistatic agent can be used to make the auxiliary pro at an angle of 0 or more than Q. When the blade 74 is inclined and brought into contact with the coating roller 73, the lower surface of the liquid reservoir 81 formed by the upper surface of the coating roller 73 can be inclined downward toward the portion where the coating roller is in contact with the auxiliary roller 74. Therefore, it is preferable that the charging preventing agent supplied from the downstream side in the feeding direction can be more efficiently guided to the liquid reservoir 81 by the action of the rotation of the coating roller 73 and the action of gravity, and as a result, the charging can be reduced. Prevent the waste of the agent. Thereby, an increase in the components of the charging preventing agent, contamination of the manufacturing apparatus, and deterioration in handleability of the laminated resin sheet 53 can be suppressed. Further, by applying a charge inhibitor to the upper surface 76 of the laminated resin sheet 53, the charge-preventing property can be sufficiently imparted to the produced laminated resin sheet 9. Therefore, it is not necessary to provide a charge inhibitor in the raw material resin of the sheet, or even if it is blended, it is also a small amount. As a result, the discoloration of the laminated resin sheet 9 and the deterioration of the surface state of the laminated resin sheet 9 can be suppressed. Further, when the circumferential surface 77 of the application roller 73 is formed of a rubber material, when the upper surface 76 of the laminated resin sheet 53 is pressed by the application roller 73, the shape of the semicircular uneven portion 17 can be matched to the circumferential surface. 77 deformation. Thereby, since the circumferential surface 77 of the 153329.doc •27-201132419 can also be penetrated into the concave strip 19 of the semicircular bull's-eye portion 17, the charging inhibitor can be uniformly applied. Since J is a rubber material, the amount of the coating roller 2 on the side of the circumferential surface 77 caused by the contact with the laminated resin sheet 53 can be reduced even after long-term use. Therefore, the charging prevention can be stably applied to the laminated resin sheet 53 for a long period of time. In the case where a plurality of parallel strip-shaped semicircular ribs 18 and recesses η are formed in the feeding direction of the laminated resin sheet 53 in the transfer step, in the coating step, The laminated resin sheet 53 is horizontally conveyed in such a manner that the semicircular ridges 18 and the indented postal members are parallel in the rotational direction. Therefore, the charge preventing agent applied to the semicircular uneven portion 17 of the laminated resin sheet 53 can be more uniformly spread in the feeding direction of the laminated resin sheet 53. Further, in a usual resin sheet in which a plurality of ridges having a height of 15 〇 (four or more) are formed on the surface, even if a charge preventing agent is dropped on the surface, the dripping antistatic agent is blocked by the ridges. Cannot be evenly distributed in the plane. On the other hand, in the method of the above-described embodiment, the charge preventing agent can be uniformly applied even to the laminated resin sheet 53 having the semicircular ridges 18 having a height of 150 μm or more. Although an embodiment of the present invention has been described above, the present invention may be embodied in other embodiments. For example, the resin sheet is not limited to a three-layer resin sheet such as a laminated resin sheet 9, and may be a single-layer resin sheet, a two-layer resin sheet, or a resin sheet containing four or more layers. Further, the surface coating liquid used in the production method of the present invention is not limited to the above-mentioned surfactant-like coating liquid for forming a charge prevention agent layer, and is applicable to the surface coating liquid used in the production method of the present invention. Various coating liquids which need to be uniformly applied, such as a coating liquid for forming a water layer, a coating liquid for forming an antifouling hard coat layer, and the like. Further, for example, in the above-described embodiment, a plurality of semicircular ribs 18 are formed on the main surface 16 on the front surface side in a cylindrical mirror shape extending in parallel with each other in one direction (one-dimensional type) (refer to the figure). 3), but, for example, may also be formed on the main surface 16 on the front surface side in a cylindrical mirror shape extending in parallel with each other in two different directions (for example, two directions perpendicular to each other) (ie, Can also be two-dimensional). Further, the semicircular uneven portion 17' may be arranged, for example, in a state in which a plurality of discontinuous semicircular ridges are apart from each other in the longitudinal direction. Further, in the above-described embodiment, the shape of the turret in which the semicircular ridge is cut is a semi-arc shape, but the shape is not limited to a semi-arc shape. For example, 'the equivalent of the cylinder may be equivalent to The shape of an arbitrary-square member when the plane without its axis is cut. χ, it can also be a v-shape, a semi-sugar arc shape, a flat ridge curve shape, and the like. That is, the term "semicircular convex portion" may also be used in the sense of including the convex portion of the shape. For example, the right is an auxiliary conveyance or the laminated resin sheet 53 and the extrusion; the first roller 63 to 65 is a technique of tens of 曰丄λ, and may be provided with the laminated resin sheet 53 and each of the rotation=(four) transfer molds 68 and the intaglio The impression touch roll (contact roll). Further, the concave portion of the resin sheet is formed by the transfer method in the above, but it may be formed by other methods. Further, even if the coating liquid is applied to the resin sheet conveyed in the horizontal direction, it can be carried out, and the coating liquid can be applied to the surface of the sheet. 153329.doc -29. 201132419 Further, the laminated resin sheet 9 is preferably used as a light diffusing plate for a backlight, but is not particularly limited to this use. Further, the backlight 2 is preferably used as a surface light source device for a liquid crystal display, but is not particularly limited to this use. [Examples] Next, the present invention will be described based on examples and comparative examples, but the present invention is not limited to the examples described below. <Material of laminated resin sheet> The following materials (1) to (8) were prepared as raw materials for the laminated resin sheet.

(1) 透光性樹脂A 苯乙烯樹脂（東洋笨乙烯股份公司製造「HRM40」折射 率 1.59)(1) Translucent resin A styrene resin (refractive index of "HRM40" manufactured by Toyo Styrene Co., Ltd. 1.59)

(2) 透光性樹脂B MS樹脂（新曰鐵化學股份公司製造「MS200NT」（苯乙稀/ 曱基丙烯酸曱酯=80重量份/20重量份）折射率1.57) (3) 帶電防止劑A層形成用塗佈液 將陽離子系帶電防止劑（日本純藥股份公司製造「SAT-6C」）以溶媒稀釋1 〇〇倍，使帶電防止劑之濃度為1重量 % 0 ) (4) 光擴散劑母膠b(顆粒） 將透光性樹脂B '光擴散劑、紫外線吸收劑乾摻之後， 將摻合物投入至螺桿直徑為65 mni之雙軸擠出機之漏斗 中’於料筒内進行熔融混合。然後，將摻合物以熔融混合 之狀態呈條狀（細繩狀）擠出並使之顆粒化而加以制備。 153329.doc •30· 201132419 又，料筒溫度設定為自漏斗下部（200°C )至擠出模頭附近 (25(TC )而向下游緩緩成為高溫。 &lt;實施例及比較例&gt; (實施例1) &lt;積層樹脂片材之製造裝置之構成&gt; 使用具有與圖5所示之樹脂片材製造裝置51相同之構成 之裝置。又，擠壓輥群及塗佈用輥群之條件如以下所述。 (1) 上輥 圓周面經鏡面加工之金屬製輥（直徑：45〇 mm)。 (2) 中間輥 之凹凸之 於圓周面上設置有糙面轉印模之金屬製輥（直徑 mm)。即，中間輥之圓周面成為形成有多個微細之[ (3)下輥(2) Translucent resin B MS resin (MS200NT manufactured by Shinki Steel Chemical Co., Ltd. (Phenylethylene / decyl acrylate = 80 parts by weight / 20 parts by weight) refractive index of 1.57) (3) Antistatic agent In the coating liquid for layer A formation, the cationic charge inhibitor ("SAT-6C" manufactured by Nippon Pure Chemical Co., Ltd.) was diluted 1 times with a solvent to make the concentration of the charge inhibitor 1% by weight. 0) (4) Light Diffusion agent masterbatch b (particles) After the light-transmitting resin B' light diffusing agent and ultraviolet absorber are dry-blended, the blend is put into a funnel of a twin-screw extruder with a screw diameter of 65 mni. Melt mixing is carried out inside. Then, the blend is prepared by extruding and granulating the blend in a strip shape (thin rope) in a state of being melt-mixed. 153329.doc •30· 201132419 Further, the cylinder temperature was set from the lower part of the funnel (200 ° C) to the vicinity of the extrusion die (25 (TC ) and gradually became a high temperature downstream. <Examples and Comparative Examples> (Example 1) &lt;Configuration of manufacturing apparatus of laminated resin sheet&gt; An apparatus having the same configuration as that of the resin sheet manufacturing apparatus 51 shown in Fig. 5 was used. Further, the pressing roller group and the coating roller group The conditions are as follows: (1) A metal roll (diameter: 45 mm) whose mirror surface is machined on the circumferential surface of the upper roll. (2) The unevenness of the intermediate roll is provided with a metal of a rough transfer mold on the circumferential surface. Roller (diameter mm). That is, the circumferential surface of the intermediate roll is formed with a plurality of fine [(3) lower rolls

圓凸條之形狀而如下述表1所示進行設定 (4)塗佈輥The shape of the round bar is set as shown in Table 1 below. (4) Coating roller

(直輕 50 mm)。 (5)輔助輥 工之金屬製輥 面加工之金屬製輥 圓周面為橡膠製，圓周面形狀經 153329.doc •31 . 201132419 (直徑50 mm)。又，以使輔助輥與塗佈輥所成之角度（第2 平面與第一平面所成之角度Θ)為20。之方式設置輔助輥。 (6)支撐輥 使用與塗佈輥相同之輥。 &lt;具體之製造方法&gt; 首先，將100重量份之透光性樹脂A以料筒内之溫度為 19(TC〜25(TC之第一擠出機進行熔融混煉之後，供給至3層 分配型進料塊中。又，將100重量份之光擴散劑母膠B以料 筒内之溫度為BOt〜25(TC之第二擠出機進行熔融混煉之 後’供給至上述3層分配型進料塊中。 繼而，以擠出樹脂溫度為250X：藉由多歧管模頭（寬度： 1500随)，以使自第一擠出機供給至進料塊之樹脂成：基 材層、自第二擠出機供給至進料塊之樹脂成為兩側之表面 層之方式複合擠出進料塊内之樹脂，然後以上輥、中間輥 及下輥進行擠壓與冷卻，藉此製作寬度11〇〇 mm、總厚度 為2.0 mm(基材層為h9 _、表面層各自為〇〇5㈣…層 之積層樹脂片材。 於積層樹脂片材之製作過程中，自模頭複合擠出之樹脂 由上輥與中間輥夾持並擠壓之後，密接於中間親之圓周面 搬送’此時被冷卻。由於在中間輥之圓周面上設置有健面 轉印模，因此’於上輥與中間輥之間進行擠㈣，於樹脂 片材之下表面側之表面層之主面（片材下表面）上藉由轉印 糖面轉印模而形成有多個微細之凹凸。 隻由中間輥與下輥夾持並擠麼。由於在下輥之圓周 I53329.doc -32· 201132419 面上具有凹版轉印模，因此，於中間輥與下輥之門進-擠 壓時’於樹脂片材之上表面側之表面層之主 叫v月材上表 面）上，藉由轉印凹版轉印模，於片材之流動方向上形成 有多條平行之線狀之半圓凸條。轉印之半圓凸條以間距p 為400 μηι等間隔地排列於積層樹脂片材之整個寬产方白 上’其高度Η為200 μιη。 又，以使上輥之表面溫度為65。(：、中間輥之表面溫度為 77°C、下輥之表面溫度為98°C之方式調節各輥之表面溫 度。 酿 於塗佈輥群中，於液體積存部中之塗佈輥之軸向中央部 之一個部位上滴下（每隔10秒滴下1〇 mL)帶電防止劑A層形 成用塗佈液。然後，使該所滴下之帶電防止劑A層形成用 塗佈液附著於藉由液體積存部之塗佈輥之圓周面上，藉由 塗佈輥與積層樹脂片材之接觸，塗佈於積層樹脂片材之整 個上表面上。之後，使溶媒自塗佈液中乾燥而形成帶電防 止劑A層。 又’積層樹脂片材之生產速度為4.7 m/min。 (實施例2) 除了使辅助輥與塗佈輥所成之角度0為10。以外，藉由與 實施例1相同之方法、條件，製作3層之積層樹脂片材。 (比較例1)(straight light 50 mm). (5) Auxiliary Roller Metal Roller for Surface Finishing The metal roll is made of rubber. The circumferential surface is made of rubber and the shape of the circumference is 153329.doc •31 . 201132419 (diameter 50 mm). Further, the angle formed by the auxiliary roller and the application roller (the angle Θ between the second plane and the first plane) was 20. The auxiliary roller is set in the same manner. (6) Support roller The same roller as the coating roller was used. &lt;Specific Manufacturing Method&gt; First, 100 parts by weight of the translucent resin A is supplied to the third layer after the temperature in the cylinder is 19 (TC to 25 (the first extruder of TC is melt-kneaded) In the distribution type feed block, 100 parts by weight of the light diffusing agent masterbatch B is supplied to the above-mentioned three-layer distribution after the temperature in the cylinder is BOt 〜25 (after the second extruder of TC is melt-kneaded) In the type of feed block. Then, the temperature of the extruded resin is 250X: by means of a multi-manifold die (width: 1500), so that the resin supplied from the first extruder to the feed block is: substrate layer And resin which is fed into the feed block from the resin supplied from the second extruder to the feed block to form a surface layer on both sides, and then the above roller, the intermediate roll and the lower roll are pressed and cooled, thereby producing A laminated resin sheet having a width of 11 mm and a total thickness of 2.0 mm (the substrate layer is h9 _, and the surface layers are each 〇〇5 (four)... layer. In the process of fabricating the laminated resin sheet, the composite extrusion from the die After the resin is clamped and pressed by the upper roller and the intermediate roller, it is closely attached to the intermediate surface of the intermediate carrier and is cooled at this time. Since the face transfer film is provided on the circumferential surface of the intermediate roll, the extrusion between the upper roll and the intermediate roll is performed (four), and the main surface of the surface layer on the lower surface side of the resin sheet (the lower surface of the sheet) A plurality of fine concavities and convexities are formed by transferring the transfer surface of the sugar surface. Only the intermediate roll and the lower roll are sandwiched and squeezed. Since the groove is transferred on the circumference of the lower roll I53329.doc -32·201132419 a mold, therefore, on the upper surface of the surface layer on the upper surface side of the resin sheet when the door of the intermediate roll and the lower roll is pressed-injected, by transferring the intaglio transfer mold, A plurality of parallel linear semicircular ribs are formed in the flow direction of the sheet. The transferred semicircular ribs are arranged at equal intervals of 400 μηι at intervals of the entire width of the laminated resin sheet. Η is 200 μηη. Further, the surface temperature of each roll is adjusted so that the surface temperature of the upper roll is 65. (:, the surface temperature of the intermediate roll is 77 ° C, and the surface temperature of the lower roll is 98 ° C. In the coating roller group, one portion of the axial center portion of the coating roller in the liquid volume portion The coating liquid for forming a charge inhibitor A layer is dripped (1 mL is dropped every 10 seconds), and then the coating liquid for forming the layer A is prevented from adhering to the coating by the liquid reservoir. The circumferential surface of the roll is applied to the entire upper surface of the laminated resin sheet by contact of the coating roll with the laminated resin sheet. Thereafter, the solvent is dried from the coating liquid to form a charge inhibitor A layer. Further, the production speed of the laminated resin sheet was 4.7 m/min. (Example 2) The same method and conditions as in Example 1 were carried out except that the angle 0 formed by the auxiliary roll and the application roll was 10. A three-layer laminated resin sheet was produced. (Comparative Example 1)

除了未設置輔助輥、以及自較積層樹脂片材與塗佈輥之 接觸部分更靠上游側處向該接觸部分中之塗佈輥之軸向中 央部之一個部位上滴下（每隔10秒滴下10 mL)帶電防止劑A 153329.doc •33· 201132419 藉由與實施例1相同之方法、條件 材。 層形成用塗佈液以外 製作3層之積層樹脂片 (比較例2) =自較積層樹脂片材與塗佈觀之接觸部分之更靠上游 鴻向沿該接觸部分中之塗佈輕之轴向均等地㈣之^ 部位滴下（每隔1〇秒滴下10 mL)帶電防止劑a層形成用塗佈 液以外，藉由與比較例】相同之方法、條件製作3層之積層 樹脂片材。 (比較例3) 除了將間距P為250㈣且等間隔地排列於積層樹脂片材 之整個寬度方向上、其高度!^為1〇〇 μηι之半圓凸條形成於 積層樹脂片材之上表面以外，藉由與比較例】相同之方 法、條件製作3層之積層樹脂片材。 (比較例3) 除了將間距Ρ為300 μηι且等間隔地排列於積層樹脂片材 之整個寬度方向上、其高度Η為200 μηι之半圓凸條形成於 積層樹脂片材之上表面以外，藉由與比較例1相同之方 法、條件製作3層之積層樹脂片材。 &lt;評價&gt; 1帶電防止劑Α之均勻塗佈性 對於上述實施例及比較例中所製作之各積層樹脂片材， 藉由以目視確認塗佈用輥群通過後之上表面外觀而評價均 勻塗佈性。將評價結果示於下述表1中。 又，於表1中，「〇」表示均勻地塗佈有帶電防止劑A之 153329.doc -34· 201132419 情形；「X」表示存在帶電防止劑A之塗佈不均之情形。 表1 半圓凸條 輔助輥 評價 間距P (μιη) 高度Η (μιη) 有無 與塗佈輥所成 之角度Θ 塗佈 均勻性 其他不良情形 實施例1 400 200 有 20。 〇 - 實施例2 400 200 有 10。 〇 - 比較例1 400 200 無 - X - 比較例2 400 200 無 - 〇 帶電防止劑Α自 片材面内溢出 比較例3 300 200 無 - X - 【圖式簡單說明】 圖1係液晶顯示器之模式側視圖； 圖2係液晶顯示器之模式立體圖； 圖3係積層樹脂板之模式立體圖； 圖4係表示積層樹脂板相對於燈箱之安裝狀態之燈箱之 要部放大剖面圖； 圖5係本發明之一實施方式之積層樹脂片材之製造方法 中所使用之製造裝置之概略構成圖；及 圖6係積層樹脂片材之製造裝置之要部放大立體圖。 【主要元件符號說明】 1 液晶顯示器 2 背光源 3 液晶面板 4 後壁 5 側壁 6 燈箱 153329.doc -35- 201132419 7 線狀光源 8 開放面 9 積層樹脂板 10 液晶早元 11、12 偏光板 13 基材層 14 ' 15 表面層 16 (前表面側之）主面 17 半圓凹凸部 18 半圓凸條 19 凹條 20 背表面側之主面 21 糙面部 51 樹脂片材製造裝置 52 片材成形機 53 積層樹脂片材 54 擠壓用輥群 55 塗佈用輥群 56 抽取用輥群 57 第一擠出機 58 第二擠出機 59 進料塊 60 模頭 61 ' 62 漏斗 153329.doc •36- 201132419 63 上輕 64 中間輥 65 下輥 66 上輥63之圓周面 67 中間輥64之圓周面 68 链面轉印模 69 下輥65之圓周面 70 凹版轉印模 71 C0槽 72 支撐輥 73 塗佈輥 74 輔助輥 75 積層樹脂片材53之下表面 76 (積層樹脂片材之）上表面 77 (塗佈親之）圓周面 78 第一平面 79 第2平面 80 輔助輥74之圓周面 81 液體積存部 82 供給喷嘴 83 液體收容部 84、85 抽取輥 d 積層樹脂板9之背表面（後述之主面20)與線 狀光源7之中心之距離 I53329.doc -37- 201132419In addition to the auxiliary roller not provided, and from the upstream side of the contact portion of the laminated resin sheet and the coating roller, it is dropped onto a portion of the axial center portion of the coating roller in the contact portion (dropped every 10 seconds) 10 mL) Charge inhibitor A 153329.doc • 33· 201132419 By the same method and condition as in Example 1. A laminated resin sheet having three layers other than the coating liquid for layer formation (Comparative Example 2) = a lighter axis along the upstream side of the contact portion of the laminated resin sheet and the coating surface Three layers of the laminated resin sheet were produced by the same method and conditions as those of the comparative example, except that the coating liquid for forming a charge inhibitor a layer was dropped (10 mL per 1 second). (Comparative Example 3) A semicircular rib having a pitch P of 250 (four) and arranged at equal intervals in the entire width direction of the laminated resin sheet, and having a height of 1 μm is formed on the upper surface of the laminated resin sheet. Three layers of the laminated resin sheet were produced by the same method and conditions as in the comparative example. (Comparative Example 3) A semicircular rib having a pitch Ρ of 300 μm and arranged at equal intervals in the entire width direction of the laminated resin sheet and having a height Η 200 μm was formed on the upper surface of the laminated resin sheet. Three layers of the laminated resin sheet were produced in the same manner and under the same conditions as in Comparative Example 1. &lt;Evaluation&gt; 1 Uniform applicability of the antistatic agent 对于 The respective laminated resin sheets produced in the above Examples and Comparative Examples were visually confirmed by the appearance of the upper surface after the application of the coating roller group. Uniform coating properties. The evaluation results are shown in Table 1 below. Further, in Table 1, "〇" indicates a case where 153329.doc -34·201132419 in which the charging preventive agent A is uniformly applied; "X" indicates a case where coating unevenness of the charging preventive agent A is present. Table 1 Semi-circular ribs Auxiliary roller Evaluation Pitch P (μιη) Height Η (μιη) With or without angle with coating roller 涂布 Coating uniformity Other disadvantages Example 1 400 200 There are 20. 〇 - Example 2 400 200 has 10. 〇 - Comparative Example 1 400 200 None - X - Comparative Example 2 400 200 None - 〇 Charge inhibitor Α from sheet surface overflow Comparative Example 3 300 200 None - X - [Simplified illustration] Figure 1 is a liquid crystal display Figure 2 is a schematic perspective view of a liquid crystal display; Figure 3 is a schematic perspective view of a laminated resin plate; Figure 4 is an enlarged cross-sectional view of an essential part of a light box in which a laminated resin plate is mounted relative to a light box; A schematic configuration diagram of a manufacturing apparatus used in a method for producing a laminated resin sheet according to an embodiment; and FIG. 6 is an enlarged perspective view of an essential part of a manufacturing apparatus for a laminated resin sheet. [Main component symbol description] 1 LCD monitor 2 Backlight 3 LCD panel 4 Rear wall 5 Side wall 6 Light box 153329.doc -35- 201132419 7 Linear light source 8 Open surface 9 Laminated resin board 10 Liquid crystal early 11, 12 Polarizing plate 13 Substrate layer 14' 15 Surface layer 16 (front surface side) main surface 17 Semicircular uneven portion 18 Semicircular ridge 19 Recessed strip 20 Main surface 21 on the back surface side Rough surface 51 Resin sheet manufacturing apparatus 52 Sheet forming machine 53 Laminated resin sheet 54 Extrusion roller group 55 Coating roller group 56 Extraction roller group 57 First extruder 58 Second extruder 59 Feeding block 60 Die 61 '62 Funnel 153329.doc • 36- 201132419 63 Upper light 64 Intermediate roller 65 Lower roller 66 The circumferential surface 67 of the upper roller 63 The circumferential surface 68 of the intermediate roller 64 The chain transfer mold 69 The circumferential surface 70 of the lower roller 65 The intaglio transfer mold 71 C0 groove 72 The support roller 73 Cloth roll 74 auxiliary roll 75 laminated resin sheet 53 lower surface 76 (stacked resin sheet) upper surface 77 (coating pro) circumferential surface 78 first plane 79 second plane 80 auxiliary roller 74 circumferential surface 81 liquid Accumulation department 82 Supply nozzle 83 Liquid accommodating portion 84, 85 Extraction roller d The distance between the back surface of the laminated resin sheet 9 (main surface 20 to be described later) and the center of the linear light source 7 I53329.doc -37- 201132419

E Η L T tl t2 W Θ 半圓凸條18彼此之間隔 線狀光源7之中心與燈箱6之後壁4之内表面 (反射板）之距離 半圓凸條18之高度 相鄰之線狀光源7之中心彼此之間隔 積層樹脂板9之總厚度 基材層13之厚度 背表面側之表面層 前表面側之表面層15之厚度 半圓凸條18之寬度 第2平面79與第一平面78所成之角度 I53329.doc -38-E Η LT tl t2 W Θ The semicircular ribs 18 are spaced apart from each other. The center of the linear light source 7 is at the center of the rear wall 4 of the light box 6 (reflector). The center of the linear light source 7 is adjacent to the height of the semicircular rib 18. The thickness of the laminated resin sheet 9 is the thickness of the base material layer 13 The thickness of the surface layer 15 on the front surface side of the surface layer on the back surface side The thickness of the semicircular rib 18 is the angle between the second plane 79 and the first plane 78. I53329.doc -38-

Claims (1)

201132419 七、申請專利範圍： 1. 一種經塗佈之樹脂片材之製造方法，其包括以下步驟： 於樹脂片材之一方表面形成凹凸； 搬送形成有上述凹凸之上述樹脂片材；以及 於上述搬送之樹脂片材之上述一方表面塗佈表面塗佈 液； 上述塗佈步驟包括： 相對於上述搬送之樹脂片材之上述一方表面擠壓塗 佈輥之圓周面； 使輔助輥之圓周面與上述塗佈輥之圓周面接觸； 使上述塗佈輥以與上述樹脂片材之接觸部分向上述 樹脂片材之搬送方向移動之方式旋轉； 使上述輔助輥向與上述塗佈輥相反之方向旋轉； 將上述表面塗佈液供給至液體積存部，該液體積存 部係於上述塗佈輥與上述輔助輥之間、且以上述塗佈輕 與上述輔助輥接觸之部分為基準而形成於上述塗佈輥及 上述輔助輥之旋轉方向之上游側。 2·如請求項1之經塗佈之樹脂片材之製造方法，其中，於 上述搬送步驟中，上述樹脂片材係水平搬送，且上述一 方表面為上表面。 3*如請求項2之經塗佈之樹脂片材之製造方法，其中，上 述輔助輥設置為：包括上述塗佈輥之軸及上述輔助輥之 軸之平面相對於包括上述塗佈輥之軸及上述塗佈輥與上 述樹脂片材接觸之線之平面，以上述塗佈輥之軸為中心 153329.doc 201132419 向上述樹脂片材之送出方向之上游側傾斜。 4. 如請求項3之經塗佈之樹脂片材之製造方法，其中， 述表面塗佈液係自上述樹脂片材之搬送方上 '』&lt; 下游側向 上述液體積存部供給。 5. 如請求項丨至4中任一項之經塗佈之樹脂片材之製造方 法’其中’橡膠材料形成上述塗佈輥之圓周面。 6. 如請求項1至4中任一項之經塗佈之樹脂片材之製造方 法’其中’上述凹凸具有向上述樹脂片材之搬送方向延 伸之複數個凸條及槽，且各個凸條及槽交錯配置。 7. 如請求項6之經塗佈之樹脂片材之製造方法，其中，上 述凸條之高度為150 μπι以上。 8. 如請求項1至4中任一項之經塗佈之樹脂片材之製造方 法’其中，上述表面塗佈液含有帶電防止劑。 9. 如請求項8之經塗佈之樹脂片材之製造方法，其中，上 述帶電防止劑含有界面活性劑。 153329.doc201132419 VII. Patent application scope: 1. A method for producing a coated resin sheet, comprising the steps of: forming irregularities on one surface of a resin sheet; transferring the resin sheet on which the irregularities are formed; Applying a surface coating liquid to the one surface of the resin sheet to be conveyed; the coating step includes: pressing a circumferential surface of the coating roller with respect to the one surface of the resin sheet to be conveyed; and making a circumferential surface of the auxiliary roller The coating roller is in contact with the circumferential surface; the coating roller is rotated so that the contact portion with the resin sheet moves in the conveying direction of the resin sheet; and the auxiliary roller is rotated in a direction opposite to the coating roller The surface coating liquid is supplied to the liquid volume storage portion, and the liquid volume storage portion is formed between the application roller and the auxiliary roller, and is formed on the coating portion based on a portion of the coating light that is in contact with the auxiliary roller. The cloth roller and the upstream side of the rotation direction of the auxiliary roller. 2. The method of producing a coated resin sheet according to claim 1, wherein in the transferring step, the resin sheet is horizontally conveyed, and the one surface is an upper surface. 3: The method for producing a coated resin sheet according to claim 2, wherein the auxiliary roller is disposed such that a plane including the shaft of the coating roller and the axis of the auxiliary roller is opposite to an axis including the coating roller The plane of the line where the coating roller is in contact with the resin sheet is inclined toward the upstream side in the feeding direction of the resin sheet centering on the axis of the coating roll 153329.doc 201132419. 4. The method for producing a coated resin sheet according to claim 3, wherein the surface coating liquid is supplied from the downstream side of the resin sheet to the liquid storage portion. 5. The method of producing a coated resin sheet according to any one of claims 4 to 4 wherein the rubber material forms a circumferential surface of the coating roller. 6. The method of manufacturing a coated resin sheet according to any one of claims 1 to 4, wherein the embossing has a plurality of ridges and grooves extending in a direction in which the resin sheet is conveyed, and each of the ribs And slot interleaved configuration. 7. The method of producing a coated resin sheet according to claim 6, wherein the height of the ridge is 150 μm or more. 8. The method of producing a coated resin sheet according to any one of claims 1 to 4, wherein the surface coating liquid contains a charge preventing agent. 9. The method of producing a coated resin sheet according to claim 8, wherein the above-mentioned charge preventing agent contains a surfactant. 153329.doc
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