Sacmi at an Open House in Italy at a prototype machine (issue 3). Moulding preforms ensures that all preforms are exactly the same – as shown by Preform system in issue 11, covering the range of 24-60 cavities. We recall, in 2001, 96-cavities on a 600 t systemĪlso in issue 7, Sacmi presented their PAM
In the “more cavities, less tonnage” race (issue 7): 128 cavities on a 350 t Table that showed a 216-cavity tool for the 65 t HyPET 650. In the following issue, Husky published a Showed their 196-cavity system for the first time at NPE (issue 5). The horizon: Chen Hsong who had been at the 2004 K show edition presented their He believed in a market for theĪnother machinery manufacturer appeared on Interview in issue 1+2 that they had built a 196-cavity tool and reported sales Waldemar Schmitke, then at Netstal, presented for the first time the Netstalġ96-cavity system, asking whether that would now be the end of the “cavity Posed some critical questions concerning the economics of such a system, and Saw his 144-cavity system as sufficient for big quantities. Need for a 196-cavity system in issue 12. 2004įirst time that in addition to the standard 300 t and 600 t machines otherĩ6-cavity system for 20 g preforms with a 9.66 s cycle time. Which were to slowly replace the fully hydraulic G range. Importance for the future was the presentation of the HyPET preform systems,
Cycle time for lightweight preforms was 5.7 sec. The machine now went up to 600 t and 144Ĭavities. Major overhaul by Engel and covered machines from 250-500 t. The range, rebranded as MacPET, had undergone a Preliner in issue 11, with 130 t and 220 t versions for up to 16 cavities. Machine which previously could run only 96 tools.Īrburg featured the vertically orientated Machine rather than the usual 48 cavities, and a 144-cavity run on a 600 t It allowed 72-cavity tools to be run on a 300 t Tool (at least a display model) was shown on the stand (as reported in issue At the following K trade show, a 144-cavity micro-pitch Husky, expressed hesitation with regard to taking up the 144-cavity challenge In issue 9 Robert Schad, back then CEO of Preform system for many years in issue 8, with a 24-cavity tool from Otto We featured the first vertical Krauss-Maffei The machine was shown at that year’s K show. Netstal’s new 144-cavity preform system with a cycle time of less than 11 secįor a 20.8 g preform. Cycle times of 14-16 sec for preforms with wall thicknesses of 3.0-3.6 mm With this, a 7 sec cycle time could be achieved for 0.5 l preforms. Quad Index machine as a further development of the Index range introduced inġ997. Swedish company produced 70 million preforms for 0.5 l bottles for Coca Cola. Recycled material was used for the inner layer. System was presented by Demag and installed at Kulleborn & Stenström in Highlights 1999-2019, as reported in PETplanet Insider 1999
Preform developments, the last topic of our jubilee year series! PET preforms – some Enjoy the journey through 20 years of PET Three times longer to injection mould preforms than to blow bottles).ĭisadvantages in terms of output or flexibility (amongst other factors), and This blow mould usuallyĬontains a third of the number of cavities of the preform mould (as it takes Injection moulded, partially cooled to maximise stability and then temperatureĬonditioned before being passed to a blow mould. Nissei ASB developed the 1.5 step moulding method, in which preforms are Stretch-blow moulding machinery in a second step. The finished preforms with aĬomplete neck can then be re-heated and stretch blow moulded into bottles in Preform heat from the injection or injection-compression process to blow mouldīottles into an equal number of blow cavities.Ģ-step process, preforms are manufactured on injection moulding machines as aįirst step by melting and moulding the PET resin. PET resin is melted and moulded into a bottle in one machine, using residual Processes can be carried out independently using different machinery (2-stage PET bottles, preforms have to be manufactured and stretch blow moulded. Results from the bottle wall thickness multiplied by the biaxial stretch ratio. The Hoop stretch ratio and the bottle’s diameter. Neck) as well as the axial stretch ratio, while the core diameter results from The length of the preform results from the bottle’s height (minus Shape, the neck finish and mechanical and barrier characteristics that need toīe achieved. Designing preforms, a number of parameters have to be defined, like the overall
0 kommentar(er)
