Ingen-Housz

P. C. Powell and A. J. Ingen Housz, Engineering with Polymers, 2nd edition. Chapman and Hall, 1998. 

Grooved bore extruders are common on European extruders up to barrel diameters of about 120 mm and on some applications up to 150 mm diameter [44]. For a 60 mm diameter machine, the maximum feed channel depth for a PP resin application is about 5 mm and 6 mm for HDPE resin applications channel depths are not much larger than this for larger diameter machines. Ingen Housz and Meijer [44]... 

Figure 6.104 Variation in birefringence of injection molded polymer of width H. Adapted from P. C. Powell and A. J. Ingen Housz, Engineering with Polymers, p. 314. Copyright 1998 by P. C. Powell and A. 1. Ingen Housz.

We owe the discovery of this faot to Priestley in 1771, but Ingen-Housz was the first to show that light was essential to the process. See Ingen-Housz, Annates de Physique, 1784, 24, 44. 3 H. T. Brown, Nature, 1899, 60, 479... 

Ingen-Housz J (1779) Experiences sur Vegetable, Didot le jeune Paris... 

There are several extruders that do not use an Archimedean screw for transportation of materials, but still belong to the category of continuous extruders. These machines are sometimes referred to as screw-less extruders. Usually they employ a disk or a drum. Most disk extruders are based on viscous drag transport principle. To this category belong stepped disk extruders [Westover, 1962 Raleigh, 1879], drum extruders, spiral extruders [Ingen Housz, 1975], diskpack extruder [Tadmor, 1979, 1980 Tadmor et al, 1979, 1983 Hold et al., 1979 Valsamis, 1983], and many others. 

R.J.M. Borggreve, R.J. Caymans, J. Schuijer and J.F. Ingen Housz, Bride-tough transition in nylon rubber blends effect of rubber concentration and particle size. Polymer. 1987, 28, 1489-96. 

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