JP2954057B2 - Cover - Google Patents
CoverInfo
- Publication number
- JP2954057B2 JP2954057B2 JP35927296A JP35927296A JP2954057B2 JP 2954057 B2 JP2954057 B2 JP 2954057B2 JP 35927296 A JP35927296 A JP 35927296A JP 35927296 A JP35927296 A JP 35927296A JP 2954057 B2 JP2954057 B2 JP 2954057B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- cover
- peripheral portion
- pressed
- peripheral edge
- 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.)
- Expired - Fee Related
Links
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- Sheet Holders (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は表紙に関し、特にた
とえば、書類を綴じるファイルの表紙やバインダ式ノー
トの表紙等の表紙に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover, and more particularly to a cover such as a cover of a file for binding a document or a cover of a binder type notebook.
【０００２】[0002]
【従来の技術】図４は従来の表紙の一例を示す正面図で
ある。この表紙１は、表表紙２，裏表紙３および背表紙
４によって合成樹脂で一体的に形成され、表紙１の厚み
は、約２ｍｍである。表表紙２と背表紙４との境界に
は、折り曲げできるような第１の折曲部５が形成され、
裏表紙３と背表紙４との境界には、折り曲げできるよう
な第２の折曲部６が形成される。背表紙４には、綴じ具
を取り付けるための３つの孔７ａ，７ｂ，７ｃが形成さ
れる。2. Description of the Related Art FIG. 4 is a front view showing an example of a conventional cover. The front cover 1 is integrally formed of a synthetic resin by a front cover 2, a back cover 3, and a spine 4, and the thickness of the cover 1 is about 2 mm. At the boundary between the front cover 2 and the spine 4, a first bent portion 5 that can be bent is formed.
At the boundary between the back cover 3 and the back cover 4, a second bent portion 6 that can be bent is formed. The spine 4 has three holes 7a, 7b, 7c for attaching a binding tool.
【０００３】図５は従来の表紙１の製造工程の一部を示
す図解図である。表紙１の周縁部８を切り刃９で切断し
て、表紙１を製造する。この切断方法は、トムソン抜き
と呼ばれる方法である。切り刃９としては、三段刃と呼
ばれ、刃の角度を３段階に変化させて連続させたものが
用いられる。FIG. 5 is an illustrative view showing a part of a manufacturing process of a conventional cover 1. The cover 1 is manufactured by cutting the peripheral portion 8 of the cover 1 with the cutting blade 9. This cutting method is a method called Thomson cutting. As the cutting blade 9, what is called a three-stage blade is used in which the angle of the blade is changed in three stages to be continuous.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
表紙１では、周縁部８を切り刃９で切断するときに、図
５に示すように、切り刃９が周縁部８を押すため、周縁
部８が永久変形して凹み、周縁部８がきれいな形状とな
らない。そのため、従来の表紙１では、表紙１の周縁部
８の見栄えが良くなかった。However, in the conventional cover 1, when the peripheral edge 8 is cut by the cutting edge 9, the cutting edge 9 pushes the peripheral edge 8 as shown in FIG. 8 is permanently deformed and dented, and the peripheral portion 8 does not have a clean shape. Therefore, in the conventional cover 1, the peripheral portion 8 of the cover 1 did not look good.
【０００５】それゆえに、本発明の主たる目的は、周縁
部の見栄えが良い表紙を提供することである。[0005] It is, therefore, a primary object of the present invention to provide a cover having a good peripheral edge.
【０００６】[0006]
【課題を解決するための手段】本発明は、周縁部が切り
刃で切断され且つ少なくとも前記周縁部及びその近傍が
永久変形する材質で形成され、その表面側から順に第１
の層，第２の層，第３の層の３つの層が一体化されて形
成された表紙であって、第１の層および前記第３の層と
比べて第２の層は柔軟な材質で形成され、前記切り刃で
押し且つ切断されて周縁部が形成され、前記周縁部が永
久変形して凹むとともに、周縁部とは適宜な間隔をおい
た部位が押し刃で押圧されて、第１の層は湾曲し、第２
の層は圧縮されて、周縁部の内側近傍も永久変形して凹
んだ、表紙である。この表紙では、周縁部が切り刃で切
断され且つ少なくとも周縁部及びその近傍が永久変形す
る材質で形成されていても、切り刃で押し且つ切断され
た周縁部が永久変形して凹むとともに、周縁部の内側近
傍も押圧されて周縁部の内側近傍も永久変形して凹むの
で、周縁部がきれいな形状となる。そして、表紙に凹部
および膨出部が容易に形成される。 SUMMARY OF THE INVENTION The present invention is directed to a first aspect of the present invention, wherein a peripheral portion is cut by a cutting blade and at least the peripheral portion and its vicinity are formed of a material which is permanently deformed .
Layer, the second layer, and the third layer are integrally formed.
A made the cover, the first layer and the third layer
In comparison, the second layer is formed of a flexible material, and is pressed and cut by the cutting blade to form a peripheral portion. The peripheral portion is permanently deformed and dented, and has an appropriate interval from the peripheral portion.
Is pressed by the pressing blade, the first layer is curved, and the second layer is pressed.
Is a cover that has been compressed and the inner periphery of the periphery has been permanently deformed and dented. This cover, even and at least the peripheral portion and the vicinity thereof are cut by blades cutting the periphery is formed of a material which permanent deformation, is and cut press with cutting edge
The peripheral portion is permanently deformed and recessed, and the vicinity of the inside of the peripheral portion is also pressed and the vicinity of the inside of the peripheral portion is also permanently deformed and recessed, so that the peripheral portion has a clean shape. And the concave on the cover
And a bulge part is formed easily.
【０００７】本発明において、切り刃で押し且つ切断さ
れて周縁部が凹み、周縁部とは適宜な間隔をおいた部位
が押し刃で押圧されて周縁部の内側近傍も凹んで凹部が
形成され、周縁部と凹部との間に膨出部が形成され、凹
部の内側が押されずに平面状に形成されるのが好まし
い。この場合、表紙に凹部および膨出部が形成されるの
で、周縁部がよりきれいな形状となる。In the present invention, the peripheral edge is depressed by being pressed and cut by the cutting blade, and a portion at an appropriate distance from the peripheral edge is pressed by the pressing blade, so that the recess near the inner side of the peripheral edge is also dented. Preferably, a bulging portion is formed between the peripheral portion and the concave portion, and the concave portion is formed in a flat shape without being pressed. In this case, since the concave portion and the bulging portion are formed on the cover, the peripheral portion has a more beautiful shape.
【０００８】本発明において、第１の層，第２の層，第
３の層の３つの層が前記切り刃で押し且つ切断されて、
前記第３の層はほぼ変形せずに周縁部が形成され、第１
の層および第２の層は前記押し刃でその周縁部の内側近
傍も押圧されて前記周縁部の内側近傍が永久変形して凹
み、第１の層の表面からみて外周縁と内側近傍の凹んだ
凹部との間が突出し、第３の層の第２の層とは反対側の
表面は平面状に形成されるのが好ましい。 In the present invention, the first layer, the second layer,
Three of the three layers are pressed and cut by the cutting blade,
The third layer has a peripheral portion formed substantially without deformation, and
The second layer and the second layer are near the inner side of the periphery thereof by the pushing blade.
The side is also pressed and the vicinity of the inside of the peripheral edge is permanently deformed and concave.
The outer peripheral edge and the concave near the inner side when viewed from the surface of the first layer.
Between the concave portion and the third layer on the opposite side of the second layer.
The surface is preferably formed flat.
【０００９】本発明において、第１の層および第３の層
がソリッドポリプロピレンの薄い層で形成され、第２の
層が発泡ポリプロピレンの第１の層および第３の層より
厚い層で形成されるのが好ましい。この場合、第２の層
を形成する発泡ポリプロピレンは、第１の層および第３
の層を形成するソリッドポリプロピレンより柔軟な材質
であり、第２の層が第１の層および第３の層より厚い層
で形成されるので、表紙に凹部および膨出部がより容易
に形成される。In the present invention, the first layer and the third layer are formed of a thin layer of solid polypropylene, and the second layer is formed of a layer thicker than the first layer and the third layer of expanded polypropylene. Is preferred. In this case, the foamed polypropylene forming the second layer includes the first layer and the third layer.
Since the second layer is formed of a thicker layer than the first layer and the third layer, the recesses and bulges are more easily formed on the cover. You.
【００１０】本発明の上述の目的，その他の目的，特徴
および利点は、図面を参照して行う以下の発明の実施の
形態の詳細な説明から一層明らかとなろう。The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the present invention with reference to the accompanying drawings.
【００１１】[0011]
【発明の実施の形態】図１は本発明にかかる表紙の一例
を示す正面図であり、図２は図１の線ＩＩ−ＩＩにおけ
る一部断面図である。この表紙１０は、表表紙１２，裏
表紙１４および背表紙１６によって一体的に形成され、
表紙１０の厚みは、約２ｍｍである。表紙１０は、図２
に示すように、その表面側から第１の層１８，第２の層
２０および第３の層２２の３つの層を積層して一体化す
ることによって形成される。表表紙１２と背表紙１６と
の境界には、折り曲げできるような第１の折曲部２４が
形成され、裏表紙１４と背表紙１６との境界には、折り
曲げできるような第２の折曲部２６が形成される。した
がって、表紙１０は、第１の折曲部２４および第２の折
曲部２６において、折り曲げることができる。背表紙１
６には、綴じ具を取り付けるための３つの孔２８ａ，２
８ｂ，２８ｃが形成される。孔２８ａ，２８ｂ，２８ｃ
には、金属製または合成樹脂製の綴じ具が公知の方法
で、取り付けられ、固定される。FIG. 1 is a front view showing an example of a cover according to the present invention, and FIG. 2 is a partial sectional view taken along line II-II in FIG. The front cover 10 is integrally formed by a front cover 12, a back cover 14, and a spine 16,
The thickness of the cover 10 is about 2 mm. The cover 10 is shown in FIG.
As shown in FIG. 5, the first layer 18, the second layer 20, and the third layer 22 are stacked and integrated from the surface side. A first foldable portion 24 is formed at the boundary between the front cover 12 and the spine 16, and a second foldable portion is formed at the boundary between the back cover 14 and the spine 16. A part 26 is formed. Therefore, the cover 10 can be bent at the first bent portion 24 and the second bent portion 26. Spine 1
6 are provided with three holes 28a, 2 for attaching a binding device.
8b and 28c are formed. Holes 28a, 28b, 28c
A metal or synthetic resin binding device is attached and fixed by a known method.
【００１２】この例では、第１の層１８および第３の層
２２は、ソリッドポリプロピレンで形成され、第２の層
２０は、発泡ポリプロピレンで形成される。そして、第
２の層２０は、第１の層１８および第３の層２２より厚
い層である。また、発泡ポリプロピレンは、ソリッドポ
リプロピレンと比べて柔軟な材質である。なお、表紙１
０は、発泡ポリプロピレン単独で形成することも可能で
あり、強度的にも十分である。ただし、発泡ポリプロピ
レンは、軽くて硬いが、着色の点で問題があり、淡い色
にしか着色できず、黒色に着色してもグレーの色にな
る。この例では、第１の層１８および第３の層２２を形
成するソリッドポリプロピレンが、表紙１０の表面に露
出し、ソリッドポリプロピレンに着色を行うので濃い着
色を行うことができる。In this example, the first layer 18 and the third layer 22 are formed of solid polypropylene, and the second layer 20 is formed of expanded polypropylene. Further, the second layer 20 is a layer thicker than the first layer 18 and the third layer 22. In addition, expanded polypropylene is a material that is more flexible than solid polypropylene. In addition, cover 1
In the case of 0, it is also possible to form the foamed polypropylene alone, and the strength is sufficient. However, the foamed polypropylene is light and hard, but has a problem in coloring, and can be colored only in a light color. In this example, the solid polypropylene forming the first layer 18 and the third layer 22 is exposed on the surface of the cover 10, and the solid polypropylene is colored.
【００１３】図３（Ａ）は図１および図２に示す表紙１
０の製造工程の一部を示す図解図であり、図３（Ｂ）は
図３（Ａ）の一部拡大図解図である。表紙１０の周縁部
３０を切り刃３２で切断して、表紙１０を製造する。こ
の切断方法は、トムソン抜きと呼ばれる方法である。切
り刃３２としては、三段刃と呼ばれ、刃の角度を３段階
に変化させて連続させたものが用いられる。この切り刃
３２は、厚さａが０．７ｍｍであり、長さｂが２３．５
ｍｍであり、突端側の角度ｃが５１度で、中央の角度ｄ
は７．２度で、突端でない側の角度ｅが３．４度であ
る。切り刃３２の突端と中央の角度変化部分との距離ｆ
は２．０ｍｍであり、切り刃３２の突端と突端でない側
の角度変化部分との距離ｇは４．４ｍｍである。図３に
示すように、切り刃３２には、押し刃３４が固定され
る。この押し刃３４は、厚さｈが０．９ｍｍであり、長
さｉが２２．５ｍｍである。押し刃３４の先端は曲面状
であり、その断面は半径０．４５ｍｍの半円状である。
切り刃３２の突端と押し刃３４の先端との距離ｊは、
１．０ｍｍである。FIG. 3A shows the cover 1 shown in FIGS.
FIG. 3B is an illustrative view showing a part of a manufacturing process of No. 0, and FIG. 3B is an enlarged partial view of FIG. The peripheral portion 30 of the cover 10 is cut by the cutting blade 32 to manufacture the cover 10. This cutting method is a method called Thomson cutting. As the cutting blade 32, a three-stage blade is used in which the angle of the blade is changed in three stages to be continuous. This cutting blade 32 has a thickness a of 0.7 mm and a length b of 23.5.
mm, the angle c at the tip end is 51 degrees, and the angle d at the center is
Is 7.2 degrees, and the angle e on the non-protrusion side is 3.4 degrees. Distance f between the tip of the cutting blade 32 and the central angle change portion
Is 2.0 mm, and the distance g between the protruding end of the cutting blade 32 and the angle changing portion on the side other than the protruding end is 4.4 mm. As shown in FIG. 3, a pushing blade 34 is fixed to the cutting blade 32. The pushing blade 34 has a thickness h of 0.9 mm and a length i of 22.5 mm. The tip of the push blade 34 is curved, and its cross section is a semicircle with a radius of 0.45 mm.
The distance j between the tip of the cutting blade 32 and the tip of the pushing blade 34 is:
1.0 mm.
【００１４】この表紙１０では、周縁部３０が切り刃３
２で切断され且つ周縁部３０及びその近傍が永久変形す
る材質で形成されている。そして、周縁部３０を切り刃
３２で切断するときに、切り刃３２が周縁部３０を押す
とともに、押し刃３４が周縁部３０の内縁を押すことと
なる。すなわち、切り刃３２が周縁部３０を押し且つ切
断して、周縁部３０が永久変形して凹むとともに、押し
刃３４が押して周縁部３０の内側近傍も押圧されて、周
縁部３０の内側近傍も永久変形して凹む。また、切り刃
３２と押し刃３４間の隙間部３８では、周縁部３０の内
縁を押さない。したがって、周縁部３０が切断されて、
製造された表紙１０では、図２に示すように、周縁部３
０が凹み、周縁部３０とは適宜な間隔をおいた部位が押
し刃３４で押圧されて周縁部３０の内側近傍も凹んで凹
部４０が形成され、周縁部３０と凹部４０との間に膨出
部４２が形成され、凹部４０の内側が押されずに平面部
４４が形成される。このとき、第１の層１８は湾曲し、
第２の層２０は圧縮され、第３の層３０はほぼ変形せず
に、表紙１０は、上述のように凹み突出する。In the cover 10, the peripheral edge portion 30 is
2, and the peripheral portion 30 and its vicinity are formed of a material that is permanently deformed. Then, when the peripheral edge 30 is cut by the cutting blade 32, the cutting blade 32 pushes the peripheral edge 30 and the pushing blade 34 pushes the inner edge of the peripheral edge 30. That is, the cutting edge 32 presses and cuts the peripheral edge portion 30, and the peripheral edge portion 30 is permanently deformed and dented, and the pressing blade 34 presses and also presses the vicinity of the inside of the peripheral edge portion 30, and the vicinity of the inside of the peripheral edge portion 30 also presses. It is permanently deformed and dented. In the gap 38 between the cutting blade 32 and the pressing blade 34, the inner edge of the peripheral edge 30 is not pressed. Therefore, the peripheral portion 30 is cut,
In the manufactured cover 10, as shown in FIG.
0 is depressed, and a portion at an appropriate interval from the peripheral portion 30 is pressed by the pressing blade 34 so that a portion near the inner side of the peripheral portion 30 is also depressed to form a concave portion 40. The protrusion 42 is formed, and the flat portion 44 is formed without pressing the inside of the recess 40. At this time, the first layer 18 is curved,
The second layer 20 is compressed, the third layer 30 is substantially undeformed, and the cover 10 is recessed and protrudes as described above.
【００１５】そのため、本発明によれば、表紙１０の周
縁部３０がきれいな形状となり、表紙１０の周縁部３０
の見栄えが良くなる。ファイルの表紙やバインダ式ノー
トの表紙等の文具用具の表紙では、表紙１０の見栄えが
購入者の購入の可否を左右することが多く、表紙１０の
周縁部３０の見栄えが良くなる効果は大きい。また、周
縁部３０の内縁も凹むので、密度が大きくなり、表紙１
０の強度が上がる。Therefore, according to the present invention, the peripheral portion 30 of the cover 10 has a beautiful shape, and the peripheral portion 30 of the cover 10 has a beautiful shape.
Looks better. In the cover of stationery tools such as the cover of a file or the cover of a binder type notebook, the appearance of the cover 10 often determines whether or not the purchaser can purchase, and the appearance of the peripheral portion 30 of the cover 10 is greatly improved. Further, the inner edge of the peripheral edge portion 30 is also dented, so that the density increases, and the cover 1
The intensity of 0 increases.
【００１６】[0016]
【発明の効果】本発明によれば、表紙の周縁部がきれい
な形状となり、表紙の周縁部の見栄えが良くなる。本発
明は、一般的に、ファイルの表紙やバインダ式ノートの
表紙等の文具用具に適用されるが、かかる文具用具で
は、表紙の見栄えが購入者の購入の可否を左右すること
が多く、表紙の周縁部の見栄えが良くなる効果は大き
い。According to the present invention, the periphery of the cover has a beautiful shape, and the appearance of the periphery of the cover is improved. The present invention is generally applied to stationery tools such as file covers and binder-type notebook covers. In such stationery tools, the appearance of the cover often determines whether or not the purchaser can purchase the cover. The effect of improving the appearance of the peripheral portion of is large.
【図１】本発明にかかる表紙の一例を示す正面図であ
る。FIG. 1 is a front view showing an example of a cover according to the present invention.
【図２】図１の線ＩＩ−ＩＩにおける一部断面図であ
る。FIG. 2 is a partial cross-sectional view taken along line II-II of FIG.
【図３】（Ａ）は図１および図２に示す表紙の製造工程
の一部を示す図解図であり、（Ｂ）は（Ａ）の一部拡大
図解図である。3A is an illustrative view showing a part of a manufacturing process of the cover shown in FIGS. 1 and 2, and FIG. 3B is a partial enlarged illustrative view of FIG.
【図４】従来の表紙の一例を示す正面図である。FIG. 4 is a front view showing an example of a conventional cover.
【図５】従来の表紙の製造工程の一部を示す図解図であ
る。FIG. 5 is an illustrative view showing one portion of a conventional cover manufacturing process;
１０ 表紙 １２ 表表紙 １４ 裏表紙 １６ 背表紙 １８ 第１の層 ２０ 第２の層 ２２ 第３の層 ３０ 周縁部 ３２ 切り刃 ３４ 押し刃 ４０ 凹部 ４２ 膨出部 DESCRIPTION OF SYMBOLS 10 Front cover 12 Front cover 14 Back cover 16 Back cover 18 1st layer 20 2nd layer 22 3rd layer 30 Peripheral part 32 Cutting blade 34 Press blade 40 Depression 42 Swelling part
フロントページの続き (72)発明者 安 井 裕 二 大阪市中央区農人橋１丁目１番22号 株 式会社 リヒトラブ内 (56)参考文献 特開 昭56−34497（ＪＰ，Ａ) 特開 平８−318498（ＪＰ，Ａ) 特公 平３−49760（ＪＰ，Ｂ２) 特公 昭52−43407（ＪＰ，Ｂ２) 特公 昭56−11571（ＪＰ，Ｂ２) 特公 昭62−4221（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) B42F 7/00 B42D 3/00 B42C 7/00 B26D 1/08,1/10 B26D 7/08 B26F 1/40,1/44 Continuation of the front page (72) Inventor Yuji Yasui 1-1-22 Nominabashi, Chuo-ku, Osaka-shi In Lichtlab Co., Ltd. (56) References JP-A-56-34497 (JP, A) JP-A-8- 318498 (JP, A) JP 3-49760 (JP, B2) JP 52-43407 (JP, B2) JP 56-11571 (JP, B2) JP 62-4221 (JP, B2) (58) Field surveyed (Int.Cl. 6 , DB name) B42F 7/00 B42D 3/00 B42C 7/00 B26D 1 / 08,1 / 10 B26D 7/08 B26F 1 / 40,1 / 44
Claims (4)
も前記周縁部及びその近傍が永久変形する材質で形成さ
れ、その表面側から順に第１の層，第２の層，第３の層
の３つの層が一体化されて形成された表紙であって、前記第１の層および前記第３の層と比べて前記第２の層
は柔軟な材質で形成され、 前記切り刃で押し且つ切断されて周縁部が形成され、前
記周縁部が永久変形して凹むとともに、前記周縁部とは適宜な間隔をおいた部位が押し刃で押圧
されて、前記第１の層は湾曲し、前記第２の層は圧縮さ
れて、 前記周縁部の内側近傍も永久変形して凹んだ、表
紙。A peripheral portion is cut by a cutting blade and at least the peripheral portion and the vicinity thereof are formed of a material that is permanently deformed, and a first layer, a second layer, and a third layer are sequentially formed from a surface side thereof.
A cover formed by integrating the three layers of the first layer and the third layer, wherein the second layer is compared with the first layer and the third layer.
Is formed of a flexible material, is pressed and cut by the cutting blade to form a peripheral portion, the peripheral portion is permanently deformed and dented, and a portion at an appropriate distance from the peripheral portion is a pressing blade. Pressing
Wherein the first layer is curved and the second layer is compressed.
And a cover that is permanently deformed and recessed in the vicinity of the inner periphery.
縁部が凹み、前記周縁部とは適宜な間隔をおいた部位が
押し刃で押圧されて前記周縁部の内側近傍も凹んで凹部
が形成され、前記周縁部と前記凹部との間に膨出部が形
成され、前記凹部の内側が押されずに平面状に形成され
た、請求項１に記載の表紙。2. The peripheral edge is depressed by being pressed and cut by the cutting blade, and a portion spaced at an appropriate distance from the peripheral edge is pressed by a pressing blade, so that the recess near the inside of the peripheral edge is also depressed. 2. The cover according to claim 1, wherein a bulge is formed between the peripheral edge and the recess, and the inside of the recess is formed in a flat shape without being pressed.
層が前記切り刃で押し且つ切断されて、前記第３の層は
ほぼ変形せずに周縁部が形成され、第１の層および第２
の層は前記押し刃でその周縁部の内側近傍も押圧されて
前記周縁部の内側近傍が永久変形して凹み、第１の層の
表面からみて外周縁と内側近傍の凹んだ凹部との間が突
出し、第３の層の第２の層とは反対側の表面は平面状に
形成された、請求項１または請求項２に記載の表紙。3. A three- layer structure comprising a first layer, a second layer, and a third layer.
The layer is pressed and cut with the cutting blade, and the third layer is
The peripheral portion is formed almost without deformation, and the first layer and the second layer are formed.
Layer is also pressed near the inside of its peripheral edge by the pushing blade.
The vicinity of the inside of the peripheral portion is permanently deformed and dented, and the first layer
When viewed from the surface, there is a protrusion between the outer peripheral edge and the concave recess near the inside.
And the surface of the third layer opposite to the second layer is planar.
The cover according to claim 1 or 2, which is formed .
ッドポリプロピレンの薄い層で形成され、前記第２の層
が発泡ポリプロピレンの前記第１の層および前記第３の
層より厚い層で形成された、請求項３に記載の表紙。4. The first and third layers are formed of a thin layer of solid polypropylene, and the second layer is a thicker layer of the expanded polypropylene than the first and third layers. The cover according to claim 3 formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35927296A JP2954057B2 (en) | 1996-12-27 | 1996-12-27 | Cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35927296A JP2954057B2 (en) | 1996-12-27 | 1996-12-27 | Cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10193859A JPH10193859A (en) | 1998-07-28 |
| JP2954057B2 true JP2954057B2 (en) | 1999-09-27 |
Family
ID=18463652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35927296A Expired - Fee Related JP2954057B2 (en) | 1996-12-27 | 1996-12-27 | Cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2954057B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5243407B2 (en) | 2006-04-27 | 2013-07-24 | フラッティーニ ソシエタ ペル アチオニ コストゥルツィオーニ メカニケ | Method and apparatus for forming edge collar of composite structure on metal material |
| JP5611571B2 (en) | 2008-11-27 | 2014-10-22 | 株式会社半導体エネルギー研究所 | Method for manufacturing semiconductor substrate and method for manufacturing semiconductor device |
-
1996
- 1996-12-27 JP JP35927296A patent/JP2954057B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5243407B2 (en) | 2006-04-27 | 2013-07-24 | フラッティーニ ソシエタ ペル アチオニ コストゥルツィオーニ メカニケ | Method and apparatus for forming edge collar of composite structure on metal material |
| JP5611571B2 (en) | 2008-11-27 | 2014-10-22 | 株式会社半導体エネルギー研究所 | Method for manufacturing semiconductor substrate and method for manufacturing semiconductor device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10193859A (en) | 1998-07-28 |
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