| Titre : |
Wrinkling – How to prevent It ? : Influences and remedies to prevent wrinkling |
| Type de document : |
texte imprimé |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 40-42 |
| Langues : |
Anglais (eng) |
| Catégories : |
Matières plastiques -- Thermoformage
Thermoformage -- Défauts
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The reason for wrinkling during thermoforming is always compression of the material that has been brought to the thermoforming temperature: if the material can no longer compensate for this with its viscoelastic behavior, wrinkles result. |
| Note de contenu : |
- Why and how do wrinkles form ?
- Measures to prevent wrinkling, with both positive molding and with negative molding
- FIGURES : 1. Wrinkling when thermoforming with positive molding, shown schematically : The material with the area ABCD heated to the thermoforming temperature comes into contact with upper surface of the mold abcd - the material is stretched mechanically by the mold, final forming of the molded part has not yet begun - the finally formed molded part exhibits wrinkles in the lower four corners - 2. Sequence of wrinkle formation, shown schematically (explanation in text) - 3. Reduction of wrinkling when thermoforming with positive molding by changing the format components and modifying the mold (explanation in text) - 4. Wrinkling in a groove thermoformed with negative molding - the groove is integrated into a positive molded part (explanation in text) |
| En ligne : |
https://drive.google.com/file/d/1F_pq55MKw_JJjO3-VQai84vp3u-Xxq_-/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24134 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 105, N° 5 (05/2015) . - p. 40-42
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