JPH02265798A - Production of two-wing insert file sheet - Google Patents

Production of two-wing insert file sheet

Info

Publication number
JPH02265798A
JPH02265798A JP8585389A JP8585389A JPH02265798A JP H02265798 A JPH02265798 A JP H02265798A JP 8585389 A JP8585389 A JP 8585389A JP 8585389 A JP8585389 A JP 8585389A JP H02265798 A JPH02265798 A JP H02265798A
Authority
JP
Japan
Prior art keywords
sheet
continuous
sheets
wing
mount
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8585389A
Other languages
Japanese (ja)
Inventor
Jiyunya Masujima
増島 詢也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPON FUAIRU KOGYO KK
Original Assignee
NIPPON FUAIRU KOGYO KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NIPPON FUAIRU KOGYO KK filed Critical NIPPON FUAIRU KOGYO KK
Priority to JP8585389A priority Critical patent/JPH02265798A/en
Publication of JPH02265798A publication Critical patent/JPH02265798A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To produce a two-wing file sheet by a method wherein a continuous tube sheet for a two-wing sheet having a width slightly narrower than that of a continuous sheet for a base sheet is divided into two parts to be developed so as to become a width almost same to that of the continuous sheet for the base sheet and the continuous sheets for the two-wing sheet are applied to both surfaces of the continuous sheet for the base sheet. CONSTITUTION:A cutter part 16 is arranged at the feed-out transfer position from the roll 13 of a continuous tube sheet 12 for a two-wing sheet and the continuous tube sheet 12 is divided into two parallel continuous sheets 22, 23 for the two-wing sheet These sheets 22, 23 are developed by developing mechanism 17, 18 and a developing piece 32 so as to become the same width as a continuous sheet 11 for a base sheet and, further, the continuous sheet 11 for the base sheet is intervened. Thereafter, the continuous sheets 22, 23 for the two-wing sheet are applied to both surfaces of the continuous sheet 11 for the base sheet by the guidance of a guide member 33. The continuous sheet is cut into individual file sheets by a cutter 37 and the file sheets are sealed by a seal mechanism 36 to be sent out.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、ファイルを開いて見開き状態にした場合、
その見開き状態における全大きさと略同じ大きさの資料
を差し込むことができる両翼差し込みファイルシートの
新規な製造方法に関する。
[Detailed Description of the Invention] (Industrial Application Field) This invention provides that when a file is opened and made into a double-page spread,
The present invention relates to a new method for manufacturing a double-wing insert file sheet into which a document of approximately the same size as the full size of the spread sheet can be inserted.

(従来の技術) 両翼差し込みファイルシートは、例えば実開昭59−5
3981号で公知であり、第4図及び第5図に示す通り
、大型の合成樹脂の台紙シート1の、横方向長さより若
干短い横方向長さと、台紙シート1の縦方向長さと同じ
縦方向長さを有する透明で薄い合成樹脂の2枚の両翼シ
ート・・2,3を、横方向に二つ折りして、夫々台紙シ
ート1の両側縁から台紙シート1上にかぶせ、上下両側
縁のみを溶着4 L、て形成しである。
(Prior art) The file sheet with both wings inserted is, for example,
No. 3981, and as shown in FIGS. 4 and 5, the lateral length of the large synthetic resin mount sheet 1 is slightly shorter than the lateral length, and the longitudinal length is the same as the longitudinal length of the mount sheet 1. Two long transparent thin synthetic resin wing sheets 2 and 3 are folded in half horizontally and placed over the mount sheet 1 from both sides of the mount sheet 1, leaving only the top and bottom edges. It is formed by welding 4L.

この両翼差し込みファイルシートは、両翼シート2,3
間に間隙5が形成されでいるから、このファイルシート
を多数重ねて、ファイルを作成した場合にあって、ファ
イルシートの半分の大きさの資料を差し込みファイルす
ることが可能であることは勿論、ファイルシー・トと略
同じ大きさの資料も差し込みファイルすることができて
便利である。
This double wing insertion file sheet is for both wing sheets 2 and 3.
Since the gap 5 is formed in between, when a file is created by stacking many file sheets, it is of course possible to insert and file a document half the size of the file sheet. It is convenient to be able to insert documents that are approximately the same size as a file sheet into a file.

上記の通りこの両翼差し込みファイルは便利であるが、
そのファイルシートを製造する際に、台紙シート1の大
きさに適合させて両翼シートを裁断し、この両翼シート
を夫々二つ折りして台紙シート1にかぶせ溶着する方法
では、その製造段階で手間が掛かり、能率的でなく自動
生産できないという問題点がある。
As mentioned above, this double wing insert file is convenient, but
When manufacturing the file sheet, the method of cutting both wing sheets to fit the size of the mount sheet 1, folding the two wing sheets in half, covering them with the mount sheet 1, and welding them is time-consuming at the manufacturing stage. There is a problem that it takes a long time, is not efficient, and cannot be produced automatically.

発明者は、この問題点を解決する為即ち上記両翼ファイ
ルシートの多量生産を可能とする為に、該ファイルシー
トを自動的に而も価格が安く小ロフトでも入手できる連
続チューブ状のI、P、P(Infl、ation、 
Po1y Propylen、e)シートを使用して連
続高能率に生産する新規な製造方法を開発し、既に特開
昭62−32095号にて提案しである。
In order to solve this problem, that is, to enable mass production of the above-mentioned double-winged file sheets, the inventor developed a continuous tube-shaped I, P that can automatically produce the file sheets and is inexpensive and can be obtained even in small lofts. ,P(Infl,ation,
We have developed a new manufacturing method for continuous and highly efficient production using Polypropylene, e) sheets, and have already proposed it in JP-A-62-32095.

この既に提案した製造方法は、台紙シート用連続シート
と、チューブ状シートを漬して平坦としこの潰した状態
で上記台紙シート用連続シートの幅と同幅からなる両翼
シート用連続チューブシートとを上下に位置付けて送り
出し移送する工程と、両翼シート用連続チューブシート
の送り出し後においてこの連続チューブシートの片面の
中心部分をカッターによって切除する工程と、台紙シー
ト用連続シートと、片面の中心部分を切除された両翼シ
ート用連続シートの移送途中で、該両翼シート用連続シ
ートを展開する工程と、展開された両翼シート用連続シ
ートの切除縁が台紙シート用連続シートの中心線に沿っ
て対向するよう、両翼シート用連続シートを台紙シート
用連続シートに被覆する工程と、これら両連続シートの
被覆状態での移送途中で、両翼シート用連続シートの切
除してない反対面の中心部分をカッターによって切除す
る工程と、その後両連続シートを一定間隔毎にシールし
切断するシール切断工程と、を含むことを特徴とするも
のである。
This already proposed manufacturing method consists of a continuous sheet for a mount sheet, and a continuous tube sheet for both wing sheets, which is made of a tube-shaped sheet that is soaked, flattened, and crushed and has the same width as the continuous sheet for the mount sheet. A process of positioning the continuous tube sheet up and down and feeding it out; a process of cutting out the center part of one side of the continuous tube sheet with a cutter after sending out the continuous tube sheet for both wing sheets; and a process of cutting the continuous sheet for the mount sheet and the center part of one side. During the transfer of the continuous sheet for both wing sheets, the continuous sheet for both wing sheets is unfolded, and the cut edges of the developed continuous sheet for both wing sheets are opposed along the center line of the continuous sheet for mount sheet. In the process of covering the continuous sheet for both wing sheets with the continuous sheet for mount sheet, and during the transfer of both continuous sheets in the coated state, the central part of the opposite side of the continuous sheet for both wing sheets that has not been cut is cut off with a cutter. The method is characterized in that it includes a step of sealing and cutting the two continuous sheets at regular intervals, and then a seal cutting step of sealing and cutting both continuous sheets at regular intervals.

(発明が解決しようとする課題) 上記既に提案した方法では、両翼シート用連続デユー・
ブシートとして、その漬して平坦とした状態で台紙シー
ト用連続シートの幅と同幅としたものを用い、ファイル
シートの製造過程で、該連続チューブシートの両面の中
心部分を切除しでいるため、切除する部分だけ材料を無
駄にしていた。
(Problem to be solved by the invention) In the method already proposed above, the continuous duel
The tube sheet is soaked and flattened so that it has the same width as the continuous sheet for the mount sheet, and the central part of both sides of the continuous tube sheet is cut out during the manufacturing process of the file sheet. , material was wasted only in the part to be removed.

本発明は、上記の点に鑑み、材料を全く無駄にすること
なく、両翼ファイルシートを自動的に而も連続して高能
率に生産する新規な製造方法を提供することを目的とす
る。
In view of the above points, it is an object of the present invention to provide a new manufacturing method that automatically and continuously produces double-winged file sheets with high efficiency without wasting any materials.

(課題を解決するための手段) 上記目的を達成するために、本発明製造方法では、台紙
シート用連続シーI・と、チューブ状シートを漬して平
坦としこの潰した状態でL足台紙シート用連続シートの
幅より僅かに狭い幅からなる両翼シート用連続チューブ
シートとを各別に送り出し移送する工程と、両翼シー・
1用連続チユーブシートの送り出し後においてこの連続
チューブシートの幅の中心位置をカッターによって切断
し、連続デユープシートを二分割して平行する両翼シー
ト用連続シートとする。L程と、F2二分割した両翼シ
ート用連続シートを台紙シート用連続シートの幅と略同
じ幅にするよう拡げる工程と、台紙シート用連続シート
と、両翼シート用連続シートの移送途中で、該両翼シー
ト用連続シートを展開し、台紙シート用連続シートを両
翼シート用連続シート内に介入する工程と、両翼シート
用連続シートの切断縁が台紙シート用連続シートの中心
線に沿って対向するよう、両翼シート用連続シートを台
紙シート用連続シートに被覆する工程と、これら両連続
シートの被覆状態での移送終域で、両連続シートを一定
間隔毎にシールし切断するシール切断工程と、を含むこ
とを特徴とするものである。
(Means for Solving the Problems) In order to achieve the above object, in the manufacturing method of the present invention, a continuous sheet I for mount sheet, a tubular sheet is soaked and flattened, and an L-leg mount sheet is The continuous tube sheet for both wing sheets, which has a width slightly narrower than the width of the continuous sheet for continuous use, is sent out and transferred separately, and
After the first continuous tube sheet is sent out, the continuous tube sheet is cut at the center position of its width by a cutter, and the continuous duplex sheet is divided into two to form parallel continuous sheets for both wing sheets. L degree, the step of expanding the continuous sheet for both wing sheets that has been divided into two F2 parts so that the width is approximately the same as the width of the continuous sheet for mount sheet, and the step of expanding the continuous sheet for mount sheet and the continuous sheet for both wing sheets during the transfer of the continuous sheet for mount sheet and the continuous sheet for both wing sheets. The process of unfolding the continuous sheet for both wing sheets and inserting the continuous sheet for the mount sheet into the continuous sheet for the mount sheet, and the step of cutting the continuous sheet for the mount sheet so that the cut edges of the continuous sheet for the mount sheet face each other along the center line of the continuous sheet for the mount sheet. , a process of coating a continuous sheet for both wing sheets on a continuous sheet for a mount sheet, and a seal cutting process of sealing and cutting both continuous sheets at regular intervals at the end of transport in the covered state of both continuous sheets. It is characterized by containing.

(実施例) 以下図面に示した好ましい実施例により本発明方法の詳
細を説明する。
(Example) The details of the method of the present invention will be explained below using preferred examples shown in the drawings.

図中11が台紙シート用連続シートで、そのロール10
から送り出される。12がチューブ状シートを漬して平
坦としこの潰した状態で上記台紙シート用連続シートの
幅より僅かに狭い幅、具体的には第4図に示す隙間5の
幅の寸法だけ狭い幅からなる両翼シート用連続チューブ
シートで、そのロール13から送り出し移送される。こ
れらロール10及び13は適宜に位置付けられており、
両シート11及び12は夫々の案内ローラー14及び1
5に案内されて移送される。
In the figure, 11 is a continuous sheet for mount sheet, and its roll 10
sent from. The tubular sheet 12 is soaked to flatten it, and when crushed, the width is slightly narrower than the width of the continuous sheet for the mount sheet, specifically, the width is narrower by the width of the gap 5 shown in FIG. This is a continuous tube sheet for both wing sheets, and is sent out from the roll 13 and transported. These rolls 10 and 13 are appropriately positioned,
Both sheets 11 and 12 have respective guide rollers 14 and 1
5 and will be transported.

両翼シート用連続チューブシート12のロール13から
の送り出し移送位置に、該チューブシート12の中心位
置を切断するカッタ一部16を配置しである。このカッ
タ一部16によって、上記連続チューブシート12を二
分割して、平行する両翼シート用連続シート22.23
とする。
A cutter part 16 for cutting the tube sheet 12 at the center is disposed at a position where the continuous tube sheet 12 for both wing sheets is sent out from the roll 13. This cutter part 16 divides the continuous tube sheet 12 into two, and the parallel continuous sheets 22 and 23 for both wing sheets are divided into two parts.
shall be.

図中17.18が、上記二分割された両翼シート用連続
シート22.23を台紙シート用連続シート11の幅と
同じ幅にするよう拡げる拡幅機構で、夫々ローラー19
.20によって夫々の両翼シート用連続シー)22.2
3を垂直上方向に立上がらせ、偏向ローラー24.25
によって夫々のシート22.23を相反する方向に水平
に指向させ、夫々該偏向ローラー24.25の直上に位
置する上部偏向ローラー26.27によって夫々のシー
ト22.23を更に垂直上向きに立上がらせである。上
記偏向ローラー24.26が連続シート22を案内し、
偏向ローラー25.27が連続シート23を案内するが
、これら偏向ローラーは、第3図に示すように夫々の連
続シート22゜23が拡幅するよう僅かに傾斜させて配
置しである。このようにして拡幅された連続シート22
゜23は案内ローラー28.28によって次の工程に移
送するようにしである。
In the figure, reference numerals 17 and 18 denote width-expanding mechanisms for expanding the two-part continuous sheets 22 and 23 for both wing sheets so that they have the same width as the continuous sheet 11 for backing sheets.
.. Continuous sea for each wing sheet by 20) 22.2
3 in a vertically upward direction, and the deflection roller 24.25
The respective sheets 22,23 are oriented horizontally in opposite directions by means of upper deflection rollers 26.27 located directly above the deflection rollers 24.25, respectively, and the respective sheets 22.23 are further raised vertically upwards. It is. The deflecting rollers 24, 26 guide the continuous sheet 22;
Deflecting rollers 25, 27 guide the continuous sheet 23, these deflecting rollers being arranged at a slight inclination so that the respective continuous sheet 22, 23 widens as shown in FIG. Continuous sheet 22 widened in this way
23 is designed to be transferred to the next process by guide rollers 28 and 28.

図中31が、上記台紙シート用連続シート11と両翼シ
ート用連続シート22.23とを重ねて案内移送する案
内ローラーで、この案内ローラー31の直前位置に、上
記二分割された両翼シート用連続シート22.23を展
開させる拡開片3232を設けてあり、この拡開片によ
って両翼シート用連続シート22.23を展開するよう
にしである。そして、この展開された連続シート222
3位置で、上記台紙シート用連続シート11を連続シー
ト22.23に介入するようにしである。
In the figure, reference numeral 31 denotes a guide roller that guides and transports the continuous sheet 11 for the mount sheet and the continuous sheet 22, 23 for both wing sheets in an overlapping manner. An expanding piece 3232 for expanding the sheets 22, 23 is provided, and the continuous sheet 22, 23 for both wing sheets is expanded by this expanding piece. Then, this unfolded continuous sheet 222
At the third position, the continuous sheet 11 for the mount sheet is interposed between the continuous sheets 22 and 23.

更に上記案内ローラー31の直後に、上記展開された両
翼シート用連続シー)22,23を、上記台紙シート用
連続シート11の縁に沿って折り曲げる案内部材33.
33が設けてあり、この案内部材33.38の案内によ
って両翼シート用連続シート22.23を台紙シート用
連続シート11に被覆する。この被覆工程によって上記
両翼シート用連続シート22.23の両切断縁29,3
0が台紙シート用連続シート11の中心線(図示せず)
に沿って対向するようにしである。
Further, immediately after the guide roller 31, a guide member 33 is provided which bends the developed continuous sheets 22, 23 for both wing sheets along the edge of the continuous sheet 11 for the mount sheet.
33 is provided, and the continuous sheet 22, 23 for both wing sheets is covered with the continuous sheet 11 for the mount sheet by the guidance of this guide member 33, 38. Through this coating process, both cut edges 29, 3 of the continuous sheet 22, 23 for both wing sheets are
0 is the center line of the continuous sheet 11 for mount sheet (not shown)
so that they are facing each other along the

34.35が、上記両連続シートの被覆状態での移送を
案内する移送案内ローラーで、この移送案内ローラーに
よって両連続シートを移送するようにしである。
Reference numerals 34 and 35 denote transport guide rollers for guiding the transport of both continuous sheets in the covered state, and the transport guide rollers are used to transport both continuous sheets.

そして図中36が連続シートを一定間隔にシールするシ
ール機構で、僅かな間隔をおいて平行する2本のシーラ
ーを有し、これによつて台紙シート用連続シート11と
その上下に被覆した両翼シート用連続シートを2本の僅
かに間隔をおいたシール線によってシールするようにし
である。そして37がカッターで、上記シール機構によ
ってシールされた2本のシール線間を切断するもので、
このカッターとシール機構によって連続シートを一枚一
枚のファイルシートにシールし且つ切断して送り出すの
である。
In the figure, 36 is a sealing mechanism that seals continuous sheets at regular intervals, and has two sealers that are parallel to each other with a slight interval between them. The continuous sheet is sealed by two slightly spaced seal lines. And 37 is a cutter, which cuts between the two seal lines sealed by the seal mechanism,
The cutter and sealing mechanism seal the continuous sheet into file sheets one by one, cut them, and send them out.

(発明の効果) 叙上の如く本発明方法では、台紙シート用連続シートと
、チューブ状シートを漬して平坦としこの潰した状態で
上記台紙シート用連続シートの幅より僅かに狭い幅から
なる両翼シート用連続チューブシートとを送り出し移送
し、両翼シート用連続チューブシートの送り出し後にお
いてこの連続チューブシートの幅の中心位置をカッター
によって切断し、連続チューブシートを二分割して平行
する両翼シート用連続シートとすると共に、この二分割
した両翼シート用連続シートを台紙シート用連続シート
の幅と略同じ幅にするよう拡幅し、その後両翼シート用
連続シートの展開、被覆作業をするようにしたから、除
去する材料は一切なく、材料を無駄にすることなく、従
前の方法に比し、概略15%程度の材料節約をすること
ができ、それだけコストダウンをすることができた大き
な効果を有する。
(Effects of the Invention) As described above, in the method of the present invention, a continuous sheet for mount sheet and a tubular sheet are soaked and flattened, and when crushed, the width is slightly narrower than the width of the continuous sheet for mount sheet. A continuous tube sheet for both wing sheets is fed out and transferred, and after the continuous tube sheet for both wing sheets is fed out, the center position of the width of this continuous tube sheet is cut with a cutter, and the continuous tube sheet is divided into two for parallel double wing sheets. In addition to creating a continuous sheet, this two-split continuous sheet for both wing sheets was widened to approximately the same width as the continuous sheet for the mount sheet, and then the continuous sheet for both wing sheets was expanded and covered. Since there is no material to be removed and no material is wasted, it is possible to save about 15% of the material compared to the previous method, which has the great effect of reducing costs accordingly.

【図面の簡単な説明】[Brief explanation of drawings]

図面は、本発明方法を実施した場合を示すもので、第1
図はその平面図、第2図はその正面図、第3図は第2図
上m−at線にみる部分側面図、第4図は両翼ファイル
シートを示す図であり、第5図はその分解斜面図である
。 1−台紙シート用連続シート 2−両翼シート用連続チューブシート 6−−カツタ一部  17.18−拡幅機構2.23−
一両翼シート用連続シート 4.25−、偏向ローラー 6.27−上部偏向ローラー 2−拡開片    33−一案内部材 6−−シール機構  37一カッター
The drawings show the case where the method of the present invention is implemented.
The figure is a plan view, FIG. 2 is a front view, FIG. 3 is a partial side view taken along line m-at in FIG. 2, FIG. 4 is a view showing both wing file sheets, and FIG. It is an exploded slope view. 1 - Continuous sheet for mount sheet 2 - Continuous tube sheet for both wing sheets 6 - Part of cutter 17.18 - Width widening mechanism 2.23 -
- Continuous sheet for both wing sheets 4.25 - Deflection roller 6.27 - Upper deflection roller 2 - Expansion piece 33 - Guide member 6 - Seal mechanism 37 - Cutter

Claims (1)

【特許請求の範囲】 台紙シート用連続シートと、チューブ状シートを漬して
平坦としこの潰した状態で上記台紙シート用連続シート
の幅より僅かに狭い幅からなる両翼シート用連続チュー
ブシートとを各別に送り出し移送する工程と、 両翼シート用連続チューブシートの送り出し後において
この連続チューブシートの幅の中心位置をカッターによ
って切断し、連続チューブシートを二分割して平行する
両翼シート用連続シートとする工程と、 上記二分割した両翼シート用連続シートを台紙シート用
連続シートの幅と略同じ幅にするよう拡げる工程と、 台紙シート用連続シートと、両翼シート用連続シートの
移送途中で、該両翼シート用連続シートを展開し、台紙
シート用連続シートを両翼シート用連続シート内に介入
する工程と、 両翼シート用連続シートの切断縁が台紙シート用連続シ
ートの中心線に沿って対向するよう、両翼シート用連続
シートを台紙シート用連続シートに被覆する工程と、 これら両連続シートの被覆状態での移送終域で、両連続
シートを一定間隔毎にシールし切断するシール切断工程
と、 を含むことを特徴とする両翼差し込みファイルシートの
製造方法。
[Scope of Claims] A continuous sheet for a mount sheet, and a continuous tube sheet for both wing sheets, which has a width slightly narrower than the width of the continuous sheet for the mount sheet when a tubular sheet is soaked, flattened, and crushed. A process of sending out and transporting each wing sheet separately, and after sending out the continuous tube sheet for both wing sheets, the center position of the width of this continuous tube sheet is cut with a cutter, and the continuous tube sheet is divided into two to create parallel continuous sheets for both wing sheets. a step of expanding the two-divided continuous sheet for both wing sheets to a width that is approximately the same as the width of the continuous sheet for the mount sheet; The step of unfolding the continuous sheet for the mount sheet and intervening the continuous sheet for the mount sheet into the continuous sheet for the both wing sheets, and the steps of: A process of coating a continuous sheet for both wing sheets with a continuous sheet for a mount sheet, and a seal cutting process of sealing and cutting both continuous sheets at regular intervals at the end of transport in the covered state of both continuous sheets. A method for manufacturing a double-wing insert file sheet.
JP8585389A 1989-04-06 1989-04-06 Production of two-wing insert file sheet Pending JPH02265798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8585389A JPH02265798A (en) 1989-04-06 1989-04-06 Production of two-wing insert file sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8585389A JPH02265798A (en) 1989-04-06 1989-04-06 Production of two-wing insert file sheet

Publications (1)

Publication Number Publication Date
JPH02265798A true JPH02265798A (en) 1990-10-30

Family

ID=13870434

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8585389A Pending JPH02265798A (en) 1989-04-06 1989-04-06 Production of two-wing insert file sheet

Country Status (1)

Country Link
JP (1) JPH02265798A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09240182A (en) * 1996-03-04 1997-09-16 Tomoda Giken Kogyo Kk Manufacture of file sheet
JP2012183662A (en) * 2011-03-03 2012-09-27 Lihit Lab Inc Two-page spread clear pocket file and method for manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09240182A (en) * 1996-03-04 1997-09-16 Tomoda Giken Kogyo Kk Manufacture of file sheet
JP2012183662A (en) * 2011-03-03 2012-09-27 Lihit Lab Inc Two-page spread clear pocket file and method for manufacturing the same

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