| Titre : |
The evils of entrapped air : Air trapped in convenience cartridge packs can compromise adhesive performance |
| Type de document : |
texte imprimé |
| Auteurs : |
Reimund Veigel, Auteur |
| Année de publication : |
2010 |
| Article en page(s) : |
p. 29-32 |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésifs -- Application-dosage
Adhésifs -- Emballages
Cartouches (emballages)
Conditionnement -- Défauts
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
Anyone who is familiar with repackaging reactive chemicals, particularly those who use these materials in small convenience packs, will know the damaging effects entrapped air can have on the contents. Product separation, outgassing and premature hardening of the product are but a few common problems.
In the case of two-component convenience cartridge packs, however, air poses an additional risk in the form of off-ratio dispensing. (Figure 1 shows an X-ray of a filled two-component cartridge that contains entrapped air.) Because air is highly compressible and most fluids are much less so, an air pocket trapped in a cartridge chamber can lead to a "time-lag" between the start of the pumping stroke and the point when material emerges from the cartridge. This is the result of the entrapped air being compressed before the fluid begins to flow. |
| Note de contenu : |
- FIGURES : 1. X-ray of a filled two-component cartridge with entrapped air - 2. Areas of possible air entrapment - 3. AF piston in opened and closed positions - 4. Cutaway view of u-TAH universal cartridge before and during filling |
| En ligne : |
http://www.adhesivesmag.com/articles/89537-the-evils-of-entrapped-air |
| Format de la ressource électronique : |
Web |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25881 |
in ADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 17, N° 7 (07/2010) . - p. 29-32
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