EP0950543B1 - Feuille de matière synthétique - Google Patents
Feuille de matière synthétique Download PDFInfo
- Publication number
- EP0950543B1 EP0950543B1 EP19990420078 EP99420078A EP0950543B1 EP 0950543 B1 EP0950543 B1 EP 0950543B1 EP 19990420078 EP19990420078 EP 19990420078 EP 99420078 A EP99420078 A EP 99420078A EP 0950543 B1 EP0950543 B1 EP 0950543B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- furrows
- another
- faces
- adjacent
- 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.)
- Revoked
Links
- 229920002994 synthetic fiber Polymers 0.000 title claims description 8
- 239000000463 material Substances 0.000 description 8
- 230000001788 irregular Effects 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000003490 calendering Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
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
Definitions
- the present invention relates to a sheet of synthetic material intended to be folded for the making of covers or envelopes of articles such as as binders, pockets, advertising cases or Similar.
- the sheets used in this application precise have a relatively large thickness for present adequate rigidity and especially to resist tears and folds that the shaping of the article involved.
- the present invention aims to remedy this major drawback, being a product whose price cost must be as low as possible.
- the sheet of synthetic material it concerns includes a relief arranged hot on the entire surface of at least one of its faces, this relief being formed by adjacent grooves not rectilinear, these grooves arranging between them series adjacent non-rectilinear ribs.
- the hot arrangement of the grooves leads, by repression of the material of the sheet, to move this matter away from the neutral fiber of this leaf. This results in an increase in the moment sheet inertia which results in a very noticeable increase in its rigidity.
- the tear resistance of the sheet according to the invention is very significantly increased. This increase seems to result from the fact that the furrows and ribs cross the internal "fiber" lines natural material, which are formed longitudinally during the production of the sheet by extrusion-calendering, or that these same grooves and ribs cross, when the material is bent, the line of fold at an angle to this line and that they constitute areas of irregular thickness which block a tear primer.
- Thinner sheets than those currently used can thus be used without risk of tearing.
- said relief can be used to give the sheet a pleasant visual appearance.
- the furrows can be simply adjacent the each other, that is, not to join, or can join or even cross.
- They can be set up at distances regular or irregular from each other, and may be arranged in the same general direction or by path groups with general directions different from one group to another.
- the sheet according to the invention can have a thickness ranging from 0.10 mm to 1.5 mm in the case where its constitutive synthetic material is free of fillers or bubbles likely to lighten it, and up to 5 mm in the event that its constituent synthetic material includes such fillers or bubbles.
- the sheet includes grooves on its two faces, the general direction of the furrows of a face not parallel to the general direction of grooves on the other side.
- the furrows thus create displacements of material as above on both sides, increasing still the stiffness of the leaf, and the furrows of a face can oppose an oriented tear parallel to the general direction of the train paths the other side, further strengthening resistance to leaf tear.
- the angle between the general directions of the paths of each of the faces is preferably at least 30 ° for ensure perfect tear resistance whatever either the direction of this tear.
- the figures are plan views of three sheets of synthetic material according to each of these embodiments.
- Figure 1 shows a sheet of material synthetic 1 intended to be folded for making covers or envelopes for articles such as binders, sleeves, advertising cases or the like.
- Sheet 1 includes a hot-laid relief on the entire surface of at least one of its faces, this relief being constituted by adjacent grooves 2 not straight, arranging between them series of ribs 3 adjacent non-straight.
- the grooves 2 are simply adjacent to each other, i.e. do not do not meet, and are arranged according to the same branch, at irregular distances from each others.
- the hot arrangement of the grooves 2 causes a discharge of the material from sheet 1 at the ribs 3.
- the displacement of this material away from the neutral fiber of sheet 1 increases the moment of inertia of the sheet and therefore the rigidity of the latter.
- the tear resistance of the sheet 1 is very markedly increased in this sheet itself or at a fold line, since the furrows and ribs cross this line forming an angle to it and that they constitute areas of irregular thickness that block a primer tear.
- the grooves 2 meet or even cross each other the others, and are also arranged according to the same branch, at irregular distances from each others.
- the grooves 2 are arranged in groups 5 and have general directions perpendicular from a group to a other, the grooves 2 being further arranged at regular distances from each other.
- the invention provides a sheet of material synthetic material intended to be folded for making covers or envelopes for articles such as binders, sleeves, advertising cases or the like, which has the advantage of being able to have a lower thickness that a leaf devoid of grooves and veins above, in said specific application, without risk tear.
Landscapes
- Wrappers (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
Claims (9)
- Feuille (1) de matière synthétique destinée à être pliée pour la confection de couvertures ou d'enveloppes d'articles tels que classeurs, pochettes, mallettes publicitaires ou similaires, caractérisée en ce qu'elle comprend un relief aménagé à chaud sur l'ensemble de la surface d'au moins une de ses faces, ce relief étant constitué par des sillons adjacents (2) non rectilignes, ces sillons (2) aménageant entre eux des séries de nervures (3) adjacentes non rectilignes.
- Feuille selon la revendication 1, caractérisée en ce que les sillons (2) sont simplement adjacents les uns des autres, c'est-à-dire ne se rejoignent pas.
- Feuille selon la revendication 1, caractérisée en ce que les sillons (2) se rejoignent ou même se croisent.
- Feuille selon l'une des revendications 1 à 3, caractérisée en ce que les sillons (2) sont aménagés à des distances régulières les uns des autres.
- Feuille selon l'une des revendications 1 à 3, caractérisée en ce que les sillons (2) sont aménagés à des distances irrégulières les uns des autres.
- Feuille selon l'une des revendications 1 à 5, caractérisée en ce que les sillons (2) sont aménagés dans une même direction générale.
- Feuille selon l'une des revendications 1 à 5, caractérisée en ce que les sillons (2) sont aménagés par groupes (5) et ont des directions générales différentes d'un groupe (5) à un autre.
- Feuille selon l'une des revendications 1 à 7, caractérisée en ce qu'elle comprend des sillons (2) sur ses deux faces, la direction générale des sillons (2) d'une face n'étant pas parallèle à la direction générale des sillons (2) de l'autre face.
- Feuille selon la revendication 8, caractérisée en ce que l'angle entre les directions générales des sillons (2) de chacune des faces est d'au moins 30°.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9804129A FR2776682B1 (fr) | 1998-03-30 | 1998-03-30 | Feuille en matiere synthetique |
FR9804129 | 1998-03-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0950543A1 EP0950543A1 (fr) | 1999-10-20 |
EP0950543B1 true EP0950543B1 (fr) | 2003-08-27 |
Family
ID=9524800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19990420078 Revoked EP0950543B1 (fr) | 1998-03-30 | 1999-03-26 | Feuille de matière synthétique |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0950543B1 (fr) |
DE (1) | DE69910649T2 (fr) |
FR (1) | FR2776682B1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1313677B1 (it) * | 1999-11-23 | 2002-09-09 | Giuseppe Locati | Metodo e impianto per la produzione di fogli in materiale cartaceoaventi una struttura sostanzialmente rigida, e fogli di tale tipo. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1319657A (fr) * | 1962-04-11 | 1963-03-01 | Lissmann Alkor Werk | Protège-cahier |
US4630843A (en) * | 1982-09-29 | 1986-12-23 | Harper House, Inc. | Binder |
US4747721A (en) * | 1987-01-27 | 1988-05-31 | Horian Richard C | Openable ring type loose-leaf notebook |
-
1998
- 1998-03-30 FR FR9804129A patent/FR2776682B1/fr not_active Expired - Fee Related
-
1999
- 1999-03-26 EP EP19990420078 patent/EP0950543B1/fr not_active Revoked
- 1999-03-26 DE DE69910649T patent/DE69910649T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69910649D1 (de) | 2003-10-02 |
FR2776682B1 (fr) | 2000-06-16 |
DE69910649T2 (de) | 2004-02-26 |
EP0950543A1 (fr) | 1999-10-20 |
FR2776682A1 (fr) | 1999-10-01 |
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