Development of high pressure injection technology for normal hydraulic injection molding machines / M. C. Song in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIII, N° 1 (03/2018)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXIII, N° 1 (03/2018) . - p. 52-59 Titre : Development of high pressure injection technology for normal hydraulic injection molding machines Type de document : texte imprimé Auteurs : M. C. Song, Auteur ; Y. Liu, Auteur ; H. Chang Année de publication : 2018 Article en page(s) : p. 52-59 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Elastomères -- Moulage par injection -- Appareils et matériels Hautes pressions Machines hydrauliques Matières plastiques -- Moulage par injection Polypropylène Presses à injecter Terpolymère acrylonitrile butadiène styrène Index. décimale : 668.4 Plastiques, vinyles Résumé : Previous studies have shown that enhancing injection pressure can help improve the precision and mechanical properties of molding products, and reduce their shrinkage. But for now the ordinary hydraulic injection molding machine cannot generally meet the requirements of high pressure injection. To improve the injection pressure, the pressurizing module and the hydraulic circuit were designed, and their influence on the product quality was explored via molding experiments. The relationship between the system pressure of injection molding machine and the injection pressure was demonstrated. The experimental results showed that the maximum injection pressure of the injection molding machine with the pressurizing module was improved from 204 MPa to 320 MPa, up 56.86 %. The lack of materials, bubbles, sags of products were gradually weakened until finally disappeared with increasing the injection pressure. The pressurizing module was convenient to be assembled into or removed from the injection molding machine without damaging the original structure, and the state of pressurizing or no pressurizing could be transformed easily during the injection molding process. These results indicated that this technology was easy to be popularized and applied. Note de contenu : - EXPERIMENTAL : Materials - Module structure and principle - Relationship between injection pressure and system pressure - Experimental instruments - Design and manufacture of the specimen - Experimental plan - RESULTS AND DISCUSSION : Effect of pressurizing module on density and crystallinity - Effect of pressurizing module on the tensile strength - Effect of pressurizing module on the impact strength - Effect of pressurizing module on the shrink mark - Effect of pressurizing module on the internal structure DOI : 10.3139/217.3364 En ligne : https://drive.google.com/file/d/1BjzKs3rqykYqsbuRfMlaYNP3sogIkhy3/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30168 [article]

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Heavy components in yellow and grey in INTERNATIONAL SURFACE TECHNOLOGY (IST), N° 2/2008 (2008)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > N° 2/2008 (2008) . - p. 20-21 Titre : Heavy components in yellow and grey : Painting plant for hydraulic excavators Type de document : texte imprimé Année de publication : 2008 Article en page(s) : p. 20-21 Langues : Anglais (eng) Catégories : Ateliers de peinture industrielle Machines hydrauliques Pièces usinées -- Revêtements:Pièces usinées -- Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : A manufacturer of hydraulic excavators has installed a new coating plat for processing steel components weighing up to 20 tonnes. The requirements included a move to water-soluble paints, together with high levels of flexibility and reliability during the application process. Note de contenu : - Five times the load - E-mail to the paint supplier - High-pressure cleaning - Standard shades of grey and yellow - Flexible, reliable and accurate - Robust and easily maintained Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22541 [article]

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Impressive experience / Rolf-Uwe Müller in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 10 (10/2013)

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 103, N° 10 (10/2013) . - p. 109-111 Titre : Impressive experience Type de document : texte imprimé Auteurs : Rolf-Uwe Müller, Auteur Année de publication : 2013 Article en page(s) : p. 109-111 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Diodes électroluminescentes Machines hydrauliques Matières plastiques -- Moulage par compression Moules d'injection Index. décimale : 668.4 Plastiques, vinyles Résumé : Process design. Controversial discussions are heard time and again as to which mold type – hydraulic or spring-loaded cavity frame – should be used in a particular case for injection compression molding with the main machine axis. It is well worthwhile in all cases to focus the arguments on the product and the process technology. Note de contenu : - Limited compression stroke, temperature-controlled hydraulic cylinders - Hydraulics versus spring systems - Required machine configuration Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20276 [article]

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Less is more / Norbert Menden in KUNSTSTOFFE INTERNATIONAL, Vol. 109, N° 10 (10/2019)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 109, N° 10 (10/2019) . - p. 108-109 Titre : Less is more : Pumps with higher speed range enable compact sizes Type de document : texte imprimé Auteurs : Norbert Menden, Auteur Année de publication : 2019 Article en page(s) : p. 108-109 Langues : Anglais (eng) Catégories : Machines hydrauliques Matières plastiques -- Appareils et matériel Pompes Systèmes d'entrainement (technologie) Index. décimale : 668.4 Plastiques, vinyles Résumé : Hydraulic applications are experiencing growing demand for pumps with higher speeds: the goal is to make the power train more cost- and energy-efficient. A newly developed series of pumps from Bucher Hydraulics helps to reduce drive torques by offering increased speeds in the power train. The optimized design of the internal gear units has enabled noise levels and size to be reduced still further. Applications that particularly benefit are those using highly dynamic open circuits, such as injection molding and die casting machines. Note de contenu : - Higher speed, lower noise level - Working in reverse mode - More displacement in a smaller size - Fig. 1 : Internal gear pumps with higher speeds enable reduced power train sizes, as smaller servo- or reluctance-motors and inverters can be installed - Fig. 2 : The non-compensated pump design achieves a quiet pressure build-up along the crescent with a very long pressure build-up distance - Fig. 3 : In injection molding machines, the pump can be operated in reverse mode several times per work cycle to relieve pressure En ligne : https://drive.google.com/file/d/1K3HBPi_e0l2jmXSSDSOmDwN_T1iPiu-b/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33802 [article]

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Miracles of efficiency / Clemens Doriat in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 11 (11/2017)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 11 (11/2017) . - p. 31-35 Titre : Miracles of efficiency : At Drinktec 2017, developments by the "PETpoint" exhibitors are causing amazement Type de document : texte imprimé Auteurs : Clemens Doriat, Auteur Année de publication : 2017 Article en page(s) : p. 31-35 Langues : Anglais (eng) Catégories : Bouchons en matières plastiques Bouteilles en matières plastiques Machines électriques Machines hydrauliques Matériaux -- Propriétés barrières Matières plastiques -- Moulage par injection Matières plastiques -- Moulage par injection -- Appareils et matériel Polyéthylène haute densité Polyéthylène téréphtalate Index. décimale : 668.4 Plastiques, vinyles Résumé : Lightweight beverage packaging, manufactured with energy-efficient systems and equipped with reliable protection for the packaging contents – the trend at the Drinktec fair pointed clearly in the direction of more sustainability. It is fascinating how much performance can be coaxed from bottles, caps and the like. A subjective review. Note de contenu : - The only all-electric cap production - Top speed machine - Closed loop: control loop between the injection molding machine and test system - An insurmountable barrier - Two or three layers ? - Five grams per bottle - TABLE : The key data of the four systsms that manufactured bottle caps at Drinktec 2017 (all of HDPE). The series comprises an all-electric machine and three hybrid machines with hydraulic injection - FIGURES : Progrip, an extremely light-weight one-part cap for still water and the Wattwiller Flower Cap, a bottle cap with patented flower shape for older users - 2. "The only all-electric machine in this performance range. "The high precision of the e-cap injection molding machines is determined partly by th epowerful servo direct drives - 3. Two system partners showed the first ever linking of control loops between the injection molding machine and an optical testing system at Drinktec. The case in point was the 38-mm cap for a milk bottle - 4. Barrier layers can perform various functions, from product protection to design elements - 5. The layer-watcher test system makes the position and thickness of the barrier between the outer and inner layer of the preform visible - 6. One goal, two alternatives : the light protection factor for milk as a three-layer barrier preform (cross section left bottom in the picture) and as an already inflated, two-layer bottle - 7. The "Factor 100" - so far the most light-weight half-liter bottle for still water on the market En ligne : https://drive.google.com/file/d/1SCR9b3E5zp11LuWFBao_3PUxTddX_HrW/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29538 [article]

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So that the heart of the machine beats longer / Gerhard Dimmler in KUNSTSTOFFE INTERNATIONAL, Vol. 108, N° 10 (10/2018)

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Valve gate nozzle for thin-wall technology in KUNSTSTOFFE INTERNATIONAL, Vol. 104, N° 11 (11/2014)  

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