[article]
| Titre : |
Complex hollow parts made in one go : Twinsheet molding - a thermoforming specialty |
| Type de document : |
texte imprimé |
| Auteurs : |
Peter Schwarzmann, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 150-154 |
| Langues : |
Anglais (eng) |
| Catégories : |
Corps creux
Matières plastiques -- Soudage
Matières plastiques -- Thermoformage
Thermoformage double feuille
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Practical know-how - The purpose of the twinsheet thermoforming process is to link two molded parts so that they form a hollow body. For this purpose, two semi-finished parts are formed individually and welded together right inside the thermoforming mold, prior to final cooling. |
| Note de contenu : |
- General properties of twinsheet forming
- Example from practical application : air ducts made of PE foam
- FIGURES : 1. Twisheet molded parts (from left) : vehicle spoilers, planting bowls and air ducts are some examples - 2. Major twisheet thermoforming elements : Upper/lower mold (1,9), heating unit (2,8), clamping frames (3,7), semi-finished product (4,6), intermediate clamping frame (5), vacuum connectors top/bottom (10) as well as provision for air feed from the atmosphere (11) for vacuum forming ; bottom, right : twinsheet molded part, untrimmed - 3. Proceeding of twinsheet forming on a machine charged by hand : inserting the two sheets, clamping, moolding (after heating), demolding (after cooling), opening the clamping frames/removing the molded part (from top left to bottom right) - 4. Sophisticated 3D geometry of PE foam film : The vehicle air ducts are very lightweight and flexible. They were produced in a twinsheet process on a UAR 155g thermoforming machine
- TABLES : 1. One-off molding (individual welding) versus twinsheet process : Differences when producing parts that consist of two halves - 2. Types of weld lines for twinsheet molded parts : Differences in weld line design and edge trimming |
| En ligne : |
https://drive.google.com/file/d/1be2ZfxTD1Ojqvx8cqs0FV2ejQCuxufyo/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28088 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 106, N° 10 (10/2016) . - p. 150-154
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