DE1071049B - - Google Patents
Info
- Publication number
- DE1071049B DE1071049B DENDAT1071049D DE1071049DA DE1071049B DE 1071049 B DE1071049 B DE 1071049B DE NDAT1071049 D DENDAT1071049 D DE NDAT1071049D DE 1071049D A DE1071049D A DE 1071049DA DE 1071049 B DE1071049 B DE 1071049B
- Authority
- DE
- Germany
- Prior art keywords
- fold
- book cover
- weld groove
- interruptions
- weld
- 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
Links
- 238000005452 bending Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 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
- B42F13/002—Covers for loose-leaf binders with hinges
-
- 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
Landscapes
- Package Frames And Binding Bands (AREA)
Description
DEUTSCHESGERMAN
Die Erfindung bezieht sich auf eine Buchdecke aus Kunststoff, insbesondere für Ringbücher und ähnliche Bucharten, bei welcher der Umlegefalz eine Schweißnut aufweist.The invention relates to a book cover made of plastic, in particular for ring binders and the like Book types in which the fold has a weld groove.
Bei den bekannten Ausführungen verläuft die Falz-Schweißnut bis nahe an den Buchrand durchgehend. Bei der üblichen Herstellung durch Hochfrequenzverschweißen wird der ursprüngliche Werkstoff bis auf etwa die Hälfte zusammengepreßt. Dadurch wird an der durch oftmaliges Auf- und Zuschlagen besonders stark beanspruchten Stelle die Haltbarkeit vermindert. In the known designs, the rebate weld groove runs continuously up to the edge of the book. In the usual production by high-frequency welding, the original material is up to compressed to about half. This makes it special because of the frequent slamming and slamming heavily used area reduces the durability.
Gemäß der Erfindung, von der die Zeichnung ein Ausführungsbeispiel darstellt, wird ein zwischen einem Buchrücken a und einem Buchdeckel b liegender Umlegefalz c mit an sich bekannten streckenweisen Unterbrechungen hergestellt, so daß die Falz-Schweißnuten also mit dazwischenliegenden ungeschweißten Werkstoffstrecken abwechseln. Dadurch wird erreicht, daß der Umlegefalz zu einem erheblichen Teil die volle Haltbarkeit des verwendeten Werkstoffes behält. Diese an sich bekannte Wirkung wurde nach einem früheren Vorschlag bei Karteikartenreitern nur zum Erhöhen der Steifigkeit der verschweißten Werkstoffe ausgenutzt.According to the invention, of which the drawing represents an exemplary embodiment, a folding fold c lying between a book spine a and a book cover b is produced with known section-wise interruptions, so that the fold-weld grooves alternate with non-welded material sections in between. This ensures that the fold-over fold retains the full durability of the material used to a considerable extent. According to an earlier proposal, this effect, which is known per se, was only used to increase the rigidity of the welded materials in index card tabs.
Werden zum Verringern der Biegebeanspruchung des Werkstoffes beim Umlegen des Buchdeckels b zwei oder mehrere Falznuten c nebeneinandergelegt, so können deren Unterbrechungen gegeneinander versetzt sein.If two or more folding grooves c are placed next to one another to reduce the bending stress on the material when the book cover b is folded over, their interruptions can be offset from one another.
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1071049B true DE1071049B (en) | 1959-12-17 |
Family
ID=595815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT1071049D Pending DE1071049B (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1071049B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1175311B (en) * | 1960-10-20 | 1964-08-06 | Hoppmann & Mulsow Elektrotechn | Fastening of damp-proof junction boxes made of thermoplastic material to walls |
| DE1285450B (en) * | 1966-07-21 | 1968-12-19 | Lennartz Walter | Book cover for ring binders |
-
0
- DE DENDAT1071049D patent/DE1071049B/de active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1175311B (en) * | 1960-10-20 | 1964-08-06 | Hoppmann & Mulsow Elektrotechn | Fastening of damp-proof junction boxes made of thermoplastic material to walls |
| DE1285450B (en) * | 1966-07-21 | 1968-12-19 | Lennartz Walter | Book cover for ring binders |
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