ISO/R 869:1968

Withdrawal of ISO/R 869-1968

ISO/R 869:1968

Name:ISO/R 869:1968   Standard name:Withdrawal of ISO/R 869-1968
Standard number:ISO/R 869:1968   language:English language
Release Date:30-Nov-1968   technical committee:ISO/TC 61 - Plastics
Drafting committee:ISO/TC 61 - Plastics   ICS number:83.080.01 - Plastics in general
UDC 678.51.8 : 620.113
Ref. No. : ISO/R 869-1968 (E)
IS0
I NT ERN AT I O N A L O RG AN I Z AT IO N FO R STA N D A RD I Z AT ION
IS0 RECOMMENDATION
R 869
PLASTl CS
PREPARATION OF SPECIMENS
FOR OPTICAL TESTS ON PLASTICS MATERIALS
MOULDING METHOD
1st EDITION
November 1968
COPYRIGHT RESERVED
The copyright of ISO. Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore oniy
by the national standards organization of that country, being
a member of ISO.
For each individual country the oniy valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.

---------------------- Page: 1 ----------------------
ISO/R 869-1968 (E) -
November 1968
I SO R eco m menda t ion R 869
P LAST I CS
PREPARATION OF SPECIMENS
FOR OPTICAL TESTS ON PLASTICS MATERIALS
MOULDING METHOD
1. SCOPE
This IS0 Recommendation describes a method for moulding plastics specimens for optical tests.
NOTE. - The preparation of specimens for optical tests by casting is the subject of IS0 Recommendation R 870, Plastics
Preparation of specimens for optical tests on plastics materinls - Casting method.
2. APPARATUS
The type of mould recommended is shown in the Figure below. It consists of the following parts :
two plates of giass with plane surfaces at least as good as those of photographic plates. A borosilicate glass
(a)
resistant to thermal shock is recommended. The dimensions of the plates should not exceed those of the press
platens;
a stainless steel frame about 4 mm thick;
(b)
two sheets of aluminium about 1 mm thick, placed between the glass plates and the press platens so as to
(c)
distribute the pressure. The insertion of a sheet of firm blotting paper between the glass plates and the
aluminium sheets is recommended.
r/ 'I
Glass plates Stainless steel frame
J
FIGURE - Mould for the preparation of test specimens for optical tests
-2-

---------------------- Page: 2 ----------------------
ISO/R 869-1968 (E)
3. PROCEDURE
3.1 After cleaning the plates carefully, assemble the mould as shown in the Figure.
in excess of that needed to produce a test
3.2 Pour the appropriate quantity of the plastics material (about 10
specimen of the required thickness) into the cavity in such fashion that the entire bottom of the cavity is
covered.
Then assemble the mould and place it between the platens of a suitable press; the platens must be plane and
parallel.
3.3 Raise the temperature slowly to that required for the plastics material being moulded and apply the minimum
pressure necessary for such time as is required to produce a sound test specimen.
3.4 Then cool the assembly gradually, under pressure (to avoid the formation of surface irregularities), and open
the mould to remove the sheet of the material.
3.5 It is inadvi
...

  • Relates Information
  • ISO 8130-9:1992

    ISO 8130-9:1992 - Coating powders
    09-28
  • EN 352-2:2020/FprA1

    EN 352-2:2021/oprA1:2023
    09-28
  • IEC TS 61158-4:1999

    IEC TS 61158-4:1999 - Digital data communications for measurement and control - Fieldbus for use in industrial control systems - Part 4: Data Link protocol specification Released:3/24/1999 Isbn:2831847656
    09-28
  • HD 566 S1:1990

    HD 566 S1:1998
    09-28
  • ISO 5131:1982/Amd 1:1992

    ISO 5131:1982/Amd 1:1992
    09-28
  • EN 60598-2-22:1990

    EN 60598-2-22:1996
    09-27
  • ISO 8504-2:1992

    ISO 8504-2:1992 - Preparation of steel substrates before application of paints and related products -- Surface preparation methods
    09-27
  • EN 12165:2024

    prEN 12165:2022
    09-27
  • IEC TS 61158-6:1999

    IEC TS 61158-6:1999 - Digital data communications for measurement and control - Fieldbus for use in industrial control systems - Part 6: Application Layer protocol specification Released:3/24/1999 Isbn:2831847613
    09-27
  • ISO 4252:1992

    ISO 4252:1992 - Agricultural tractors -- Operator's workplace, access and exit -- Dimensions
    09-27