FR2755397A1 - Ring binder with rounded and impressed spine - Google Patents
Ring binder with rounded and impressed spine Download PDFInfo
- Publication number
- FR2755397A1 FR2755397A1 FR9613581A FR9613581A FR2755397A1 FR 2755397 A1 FR2755397 A1 FR 2755397A1 FR 9613581 A FR9613581 A FR 9613581A FR 9613581 A FR9613581 A FR 9613581A FR 2755397 A1 FR2755397 A1 FR 2755397A1
- Authority
- FR
- France
- Prior art keywords
- punch
- polypropylene
- flat surfaces
- article
- spine
- 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.)
- Granted
Links
- 239000011230 binding agent Substances 0.000 title abstract 2
- 239000004743 Polypropylene Substances 0.000 claims abstract description 13
- -1 polypropylene Polymers 0.000 claims abstract description 13
- 229920001155 polypropylene Polymers 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims description 2
- 229910052740 iodine Inorganic materials 0.000 claims description 2
- 239000011630 iodine Substances 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42F—SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
- B42F13/00—Filing appliances with means for engaging perforations or slots
- B42F13/0006—Covers for loose-leaf binders
- B42F13/0013—Covers for loose-leaf binders made of special materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D3/00—Book covers
- B42D3/02—Book covers made of special materials
Landscapes
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
Couverture à dos arrondi et son procédé de fabrication
La présente invention concerne un article de classement, tel qu'une couverture à anneaux, du type comprenant deux surfaces planes articulées sur un dos, lesdites surfaces planes et ledit dos étant d'une seule pièce en polypropylène.Rounded back cover and its manufacturing process
The present invention relates to a filing article, such as a ring blanket, of the type comprising two flat surfaces articulated on a back, said flat surfaces and said back being in one piece of polypropylene.
Les articles de classement de ce type, qui peuvent constituer une simple couverture, peuvent également comprendre des articles plus compliqués, par exemple des classeurs fermés par des rabats articulés sur des bords des surfaces planes.Filing articles of this type, which may constitute a simple cover, may also include more complicated articles, for example filing cabinets closed by flaps hinged on the edges of flat surfaces.
Ces articles sont obtenus par découpage à froid et rainage simultané des arêtes d'articulations dans une feuille de polypropylène.These articles are obtained by cold cutting and simultaneous creasing of the articulation edges in a polypropylene sheet.
Un inconvénient de ces articles de classement connus est la forme totalement plate, sans relief ni décor, du dos qui donne un aspect pauvre au produit. A disadvantage of these known classification articles is the completely flat shape, without relief or decoration, of the back which gives a poor appearance to the product.
La présente invention vise en conséquence à fournir un nouvel article de classement ne présentant pas cet inconvénient des articles connus
A cet effet, l'article de classement selon l'invention est caractérisé en ce que ledit dos est bombé et/ou muni de dessins en relief et/ou en creux.The present invention therefore aims to provide a new classification article not having this drawback of known articles
To this end, the classification article according to the invention is characterized in that said back is curved and / or provided with raised and / or hollow drawings.
L'invention a également pour objet la fabrication d'un article de classement, tel qu'une couverture à anneaux, du type comprenant deux surfaces planes articulées sur un dos, lesdites surfaces planes et ledit dos étant d'une seule pièce en polypropylène découpée et rainée à froid dans une feuille de polypropylène, caractérisé en ce qu'on chauffe ledit dos uniformément à une température supérieure à la température de déformation plastique ou de ramollissement du polypropylène mais inférieure à sa température de fusion, on dispose la pièce avec le dos préchauffé entre une matrice fixe, comportant une empreinte de la courbure de bombage et/ou des dessins en relief et/ou en creux à former sur le dos de l'article, et un poinçon mobile muni d'une tête comportant ladite courbure et/ou lesdits dessins à obtenir, on rapproche le poinçon mobile de ladite empreinte, on maintient sous pression la pièce emprisonnée entre la matrice et le poinçon, on écarte le poinçon et on enlève la pièce ainsi formée.A subject of the invention is also the manufacture of a filing article, such as a ring cover, of the type comprising two flat surfaces articulated on a back, said flat surfaces and said back being in one piece of cut polypropylene. and cold grooved in a polypropylene sheet, characterized in that the said back is heated uniformly to a temperature above the plastic deformation or softening temperature of the polypropylene but below its melting temperature, the part is placed with the back preheated between a fixed die, comprising an imprint of the bending curvature and / or relief and / or hollow drawings to be formed on the back of the article, and a movable punch provided with a head comprising said curvature and / or said drawings to be obtained, the movable punch is brought closer to said imprint, the part trapped between the die and the punch is kept under pressure, the punch is moved aside lesson and the part thus formed is removed.
De préférence, pour réduire la durée d'application du poinçon, on refroidit le poinçon et/ou la matrice, par exemple au moyen d'un circuit de refroidissement par eau réfrigérée.Preferably, to reduce the duration of application of the punch, the punch and / or the die are cooled, for example by means of a cooling circuit with chilled water.
L'invention sera bien comprise à la lecture de la description suivante en référence au dessin annexé dans lequel
la figure 1 illustre schématiquement une étape de préchauffage du procédé selon l'invention et
la figure 2 illustre schématiquement une étape subséquente de mise en forme.The invention will be clearly understood on reading the following description with reference to the accompanying drawing in which
FIG. 1 schematically illustrates a step of preheating the method according to the invention and
Figure 2 schematically illustrates a subsequent shaping step.
La fabrication d'un article de classement conforme à l'invention ajoute à une opération classique de découpage et rainage à froid, d'une pièce de polypropylène, une étape préliminaire de préchauffage suivie d'une étape de mise en forme.The manufacture of a classification article in accordance with the invention adds to a conventional cold cutting and creasing operation, of a piece of polypropylene, a preliminary preheating step followed by a shaping step.
Après découpage et rainage à froid, on obtient une pièce plane 1 comprenant deux surfaces planes 2 articulées sur un dos 3 le long d'arêtes 4 formées par le rainage.After cutting and cold creasing, a flat part 1 is obtained comprising two flat surfaces 2 articulated on a back 3 along edges 4 formed by creasing.
La pièce 1 ainsi constituée est disposée à plat avec son dos 3 maintenu entre deux sources de chaleur intense 5 et 6 (figure 1) équidistantes du dos 3. Ces sources 5 et 6 sont avantageusement constituées par deux tubes du type "quartz iode linéaire" de 2000 watts dont la longueur est au moins égale à la longueur du dos.The part 1 thus formed is arranged flat with its back 3 held between two sources of intense heat 5 and 6 (FIG. 1) equidistant from the back 3. These sources 5 and 6 are advantageously constituted by two tubes of the "linear iodine quartz" type. of 2000 watts whose length is at least equal to the length of the back.
Les sources 5 et 6 doivent être parfaitement alignées entre elles et axées sur l'axe du dos 3, de manière à obtenir un chauffage le plus uniforme possible de ce dos 3, sans affecter les surfaces planes 2 de la pièce 1. Ceci peut être contrôlé par l'ouverture du champ de rayonnement des tubes 5 et 6 dans leur support 5' et 6' respectif.The sources 5 and 6 must be perfectly aligned with each other and centered on the axis of the back 3, so as to obtain the most uniform possible heating of this back 3, without affecting the flat surfaces 2 of the part 1. This can be controlled by the opening of the radiation field of the tubes 5 and 6 in their respective supports 5 'and 6'.
Les sources 5 et 6 sont alimentées pendant un temps dépendant de leur écartement par rapport à la pièce 1, suffisant pour que le dos 3 atteigne une température supérieure à son point de ramollissement ou température de déformation plastique, mais inférieure à sa température de fusion. Cette durée est avantageusement commandée par une minuterie déclenchée par un signal du cycle du processus.The sources 5 and 6 are supplied for a time dependent on their distance from the part 1, sufficient for the back 3 to reach a temperature higher than its softening point or plastic deformation temperature, but lower than its melting temperature. This duration is advantageously controlled by a timer triggered by a signal from the process cycle.
La pièce 1 ainsi réchauffée est rapidement transportée à un poste de mise en forme représenté à la figure 2. La pièce 1 est disposée en regard d'une matrice fixe 7 comportant une empreinte en creux 8 en regard de laquelle est positionné le dos 3 préchauffé de la pièce 1.The part 1 thus warmed up is quickly transported to a shaping station shown in FIG. 2. The part 1 is placed facing a fixed matrix 7 comprising a hollow imprint 8 opposite which is positioned the preheated back 3 from room 1.
Un poinçon mobile 9, dont la tête 10 comporte un relief complémentaire de l'empreinte 8, est disposé au-dessus du dos 3 en regard de l'empreinte 8. Le poinçon 9 peut être abaissé puis relevé au moyen d'un dispositif approprié tel qu'un vérin 11.A movable punch 9, the head 10 of which has a complementary relief of the imprint 8, is disposed above the back 3 opposite the imprint 8. The punch 9 can be lowered and then raised by means of an appropriate device such as a jack 11.
A la fin de la descente du vérin 11, le dos 3 de la pièce 1 est déformé plastiquement, par la tête 10 du poinçon 9, dans l'empreinte 8 et, en fin de course, est emprisonné entre la tête 10 et l'empreinte 8. Cet emprisonnement est maintenu quelques secondes sous une pression de, par exemple, 8 bars, jusqu'à obtention et conservation de la déformation voulue correspondant au refroidissement de la pièce 1 au-dessous du point de ramollissement du polypropylène. Ce temps est avantageusement réduit par un refroidissement du poinçon 9 et/ou de la matrice 7, par exemple au moyen de circuits de refroidissement par eau réfrigérée.At the end of the descent of the jack 11, the back 3 of the part 1 is plastically deformed, by the head 10 of the punch 9, in the cavity 8 and, at the end of the race, is trapped between the head 10 and the imprint 8. This confinement is maintained for a few seconds under a pressure of, for example, 8 bars, until the desired deformation corresponding to the cooling of the part 1 is obtained and kept below the softening point of the polypropylene. This time is advantageously reduced by cooling the punch 9 and / or the die 7, for example by means of cooling circuits with chilled water.
Le poinçon 9 est ensuite remonté par le vérin 11 et la pièce 1 est récupérée, éventuellement à la main, de préférence à l'aide d'éjecteurs.The punch 9 is then reassembled by the jack 11 and the part 1 is recovered, possibly by hand, preferably using ejectors.
En plus ou à la place de la forme bombée du dos 3, on peut obtenir des dessins très variés, en relief et/ou en creux.In addition to or in place of the domed shape of the back 3, one can obtain very varied designs, in relief and / or intaglio.
Ces dessins peuvent par exemple prendre la forme de nervures transversales équidistantes en relief, l'ensemble donnant un aspect noble à l'article de classement. Cet aspect peut être renforcé ou complété par des marquages, par exemple par impression à chaud. These drawings can for example take the form of transverse ribs equidistant in relief, the assembly giving a noble appearance to the classification article. This aspect can be reinforced or supplemented by markings, for example by hot printing.
Claims (6)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9613581A FR2755397B1 (en) | 1996-11-07 | 1996-11-07 | ROUND BACK BACK COVER AND MANUFACTURING METHOD THEREOF |
| EP97402672A EP0850783A1 (en) | 1996-11-07 | 1997-11-07 | Cover with a rounded back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9613581A FR2755397B1 (en) | 1996-11-07 | 1996-11-07 | ROUND BACK BACK COVER AND MANUFACTURING METHOD THEREOF |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2755397A1 true FR2755397A1 (en) | 1998-05-07 |
| FR2755397B1 FR2755397B1 (en) | 1998-11-27 |
Family
ID=9497414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9613581A Expired - Fee Related FR2755397B1 (en) | 1996-11-07 | 1996-11-07 | ROUND BACK BACK COVER AND MANUFACTURING METHOD THEREOF |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0850783A1 (en) |
| FR (1) | FR2755397B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2817505A1 (en) * | 2000-12-06 | 2002-06-07 | Avery Dennison France | Document file or loose-leaf binder, has a weakened zone along part of each cover, parallel to the spine, so it stays open when held by spine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1482554A (en) * | 1965-06-09 | 1967-05-26 | Process for obtaining letters, characters and marks | |
| US3470290A (en) * | 1967-02-28 | 1969-09-30 | Macoid Ind Inc | Method of making plastic file folder |
| FR2579931A1 (en) * | 1985-04-05 | 1986-10-10 | Usiplast | Binders reinforced along at least one of their edges by the folding over of material |
| FR2628684A1 (en) * | 1988-03-15 | 1989-09-22 | Publiaction Sarl | Binder for catalogues and magazines - with grooves at centre of polypropylene sheet forming spine |
-
1996
- 1996-11-07 FR FR9613581A patent/FR2755397B1/en not_active Expired - Fee Related
-
1997
- 1997-11-07 EP EP97402672A patent/EP0850783A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1482554A (en) * | 1965-06-09 | 1967-05-26 | Process for obtaining letters, characters and marks | |
| US3470290A (en) * | 1967-02-28 | 1969-09-30 | Macoid Ind Inc | Method of making plastic file folder |
| FR2579931A1 (en) * | 1985-04-05 | 1986-10-10 | Usiplast | Binders reinforced along at least one of their edges by the folding over of material |
| FR2628684A1 (en) * | 1988-03-15 | 1989-09-22 | Publiaction Sarl | Binder for catalogues and magazines - with grooves at centre of polypropylene sheet forming spine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2817505A1 (en) * | 2000-12-06 | 2002-06-07 | Avery Dennison France | Document file or loose-leaf binder, has a weakened zone along part of each cover, parallel to the spine, so it stays open when held by spine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0850783A1 (en) | 1998-07-01 |
| FR2755397B1 (en) | 1998-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |