ISO 294-5-2017 pdf free download

ISO 294-5-2017 pdf free download.Plastics — Injection moulding of test specimens of thermoplastic materials — Part 5:Preparation of standard specimens for investigating anisotropy
Plastiques — Moulage par injection des éprouvettes de ,natériaux thermoplastiques — Partie 5: Prépara tion d ‘éprou vettes n ormalisées pour déterm iner I ‘anisotro pie.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 294-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— I EC Electropedia: available at http:/Jw ww.electroped ia.urg/
— ISO Online browsing platform: available at http://www.iso.org/obp
4 Apparatus
4.1 TypeFISO mould
Plates shall be moulded in a two-cavity type F ISO mould (see FigureJ. and 2). The preferred mould dimensions shall be such that the plates produced measure 80 mm x 120 mm (minimum:
80 mm x 90 mm) (the actual length and width of the mould will vary slightly because of the different shrinkage of different materials).
The preferred thickness is 2 mm, but other thicknesses may be used. A thickness of 2 mm is representative of the actual wall thickness of many mouldings and gives a skin-thickness to core- thickness ratio corresponding to the maximum anisotropic properties. Other thicknesses may be used to give different skin-thickness to core-thickness ratios.
A pressure sensor may be used to monitor the moulding process, but is not required. The sensor1 if used. shall be located centrally with respect to the width of the cavity.
II an interchangeable cavity plate of length less than 220 mm is used, it is permissible to use a single flood gate centred on Lhe sprue and no runners.
To obtain correct test specimens, it is essential that the dimensions of the moulded plate be as follows:
— length >120 mm;
— width>BOmm.
The main constructional details of the mould shall be as shown In Figures 1 and 2 and the mould shall.
in addition, meet the following requirements:
a) see ISO 294-1:2017. 4.1.1.4. item a);
b) see ISO 294-1:2017, 4.L1.4, item b);
c) see ISO 294-1:2017, 4.1.1.4, Item C);
d) and e), not applicable;
1) see ISO 294-1:2017, 4.1.1.4, Item 1);
g) not applicable (see Figure 2)
h), I), j) and k) see ISO 294-1:2017, 4.1.1.4, items h), I), j) and k);
1) to n) see ISO 294-1:2017. 4.1.1.4, Items I) to n).ISO 294-5-2017 pdf free download.