ISO 294-3-2020 pdf free.Plastics — Injection moulding oftest specimens of thermoplasticmaterials.
This document specifies two two-cavity moulds, the type D11 and D12 IS0 moulds, for the injectionmoulding of small plates measuring 60 mm x 60 mm with a preferred thickness of 1 mm(type D11) or2 mm (type D12), which can be used for a variety of tests.The moulds can additionally be fitted withinserts for studying the effects of weld lines on the mechanical properties (see Annex A).
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies. Forundated references, the latest edition of the referenced document(including any amendments) applies.ISO 294-1:2017,Plastics — Injection moulding of test specimens of thermoplastic materials — Part 1:General principles, and moulding of multipurpose and bar test specimens.ISO 294-4，Plastics — lInjection moulding of test specimens of thermoplastic materials — Part 4:Determination of moulding shrinkage
: oon.ISO 6603-1，Plastics — Determination of puncture impact behaviour of rigid plastics — Part 1: Non instrumented impact testing.
For the purposes of this document, the terms and definitions given in ISO 294-1 apply.
Type D11 and D12 IS0 moulds are two-cavity moulds (see Figure 1) intended for the preparation ofplates measuring 60 mm x 60 mm.The plates produced using these moulds shall have the dimensionsshown in Figure 2 and given in Table 1.
The main constructional details of type D11 and D12 IS0 moulds shall be as shown in Figure 1 and Figure 2 and shall meet the following requirements.
a) The sprue diameter on the nozzle side shall be at least 4 mm according to IS0 294-1:2017,4.1.1.4, item a).
b) Runner length lp and runner depth hp see Table 1; runner design according to Figure 2.
c) The cavities as shown in Figure 1 shall be one-end gated according to lSO 294-1:2017,4.1.1.4, item c).
d)The height of the gate shall be at least (75±5)% of the height of the cavity and the width of the gate shall be equal to that of the cavity at the point where the gate enters the cavity.
e)The gate length shall be (4 ± 0,1) mm.
f)The draft angle of the runners shall be according to ISO 294-1:2017,4.1.1.4, item f).ISO 294 pdf download.