هيئة التقييس لدول مجلس التعاون لدول الخليج العربية  
GCC STANDARDIZATION ORGANIZATION (GSO)  
 
 
مشروع  مواصفة نهائي 
Final Draft of Standard FDS  
  
 
إعداد اللجنة الفنية  الخليجية رقم TC01 
 
Prepared by GSO  Technical  Committee No.  TC12  
 
  
 
GSO 01/FDS/  …. :2020 
  
رغوة اليوريثات القابلة للانثناء ( الاسفنج الصناعي  
والفرشات والوسائد المصنوعة منها  
 
Flexible Urethane Foam (industrial sponge)  
And Mattresses And Pillows Mad IT  
 
 
ICS:  01.04071  
 
هذه الوثيقة مشروع لمواصفة قياسية خليجية تم توزيعها 
لإبداء الرأي والملحوظات بشأنها ، لذلك فإنها عرضة 
للتغيير والتبديل، ولا يجوز الرجوع إليها كلائحة فنية 
خليجية إلا بعد اعتمادها من الهيئة . 
 This document is  a draft Gulf Standard  
circulated for comments. It is, therefore, 
subject to alteration and modification and 
may not be referred to as a Gulf Technical 
Regulation  until approved by GSO.  
 
 
 
 Gulf Standard GSO …….  :2020  
 
 
1 
 تقديم 
 
هيئة التقييس لدول  مجلس التعاون  لدول  الخليج العربية هيئة إقليمية تضمم  في عضممتها ا هزة   التقييس التطنية في 
الدول  الأعضمممممممممممما   ومن مةام الةيئة إعداد المتاصمممممممممممم ا  القياسممممممممممممية واللتائح ال نية الخليجية بتاسمممممممممممم ة لجان فنية 
متخصصة . 
قرر /قرر  مجلس الإدار  لةيئة التقييس لدول مجلس التعاون لدول الخليج العربية في ازتماعه رق مممممممممممممممممممممممممممممممممممممممممممممممممممممم  اختر رقم 
الاجتماع الذي عقد بتارهخ....... /......./....... هممممممممممممممم  المتاف  ......./...../.......م اعتماداللائحة ال نية  الخليجية رق    … GSO  "
رغت  اليترهثان القابلة للانثنا  ( الاسمممم نج الصممممنافي ا وال رسمممما  والتسممممائد المصممممنتعة م  ا"  التي ت  دراسمممما ا وإعدادها  
ضمممممممممممممن برنامج عم  اللجنة ال نية  الخليجية رق  TC01  "اللجنة ال نية الخليجية للمتاصمممممممممممم ا  الغيميائية وال  ل
والنسيج " المدرزة في خ ة   دولة الكتهت. 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Gulf Standard GSO …….  :2020  
 
 
2 
 Flexible Urethane Foam (industrial sponge) 
And Mattresses And Pillows Mad IT   
 
 
1 –  Scope and Field of Application  
 
This Gulf Standard covers  the requirements and specifications that must be 
available in foldable urethane foam (industrial sponge), which is used in 
(mattresses, pillows, etc.), it's also specifies the requirements for these mattresses 
and pillows.  
 
2 - Normative References  
 
2.1 ISO 1798 Flexible  cellular polymeric materials – Determination of tensile 
strength and elongation at break.  
 
3 -  Terms and Definitions  
    Urethane foam: foldable material, consisting of network of cells with have similar 
properties that are necessarily open and interconnected and with homogeneous 
construction of the foam.  
 
4 -  Requirements  
 
4.1 Urethane foam classified into the following two categories :  
 
A-Right angel foam 
B- Multi shape foam 
 
4.2 Flexible urethane foam prepared in the shape of blocks, sheets or strips, and due 
to same manufacturing conditions it may be necessary to make correcti on or repair,  
in this case,  the foam that has been corrected or repaired is considered to comply 
this standared    
But It should be from the same composition and quality of the original foam ,  
provided that such corrections don’t effect Corrections and difference agreed 
between seller and buyer  regarding the measurement , shape and suitability of the 
use of the foam .  
During correction,  repair, or manufacturing operations Adhesives should not c ause 
any damage to the foam, and the bonds resulting from the strength of the original 
foam should be at the very least . 
 Gulf Standard GSO …….  :2020  
 
 
3 
 4.3 The outer surface should not have loosened at the agreed important surfaces, 
Also, the marks resulting from removing molds as well  as other surface defects 
should not be worse than the standard sample agreed between the seller and the 
buyer .  
 
4.4 The foam shall be odorless  
 
4.5 The color shall be appropriately uniform and according to what agreed upon 
between the seller and the buyer, taking into account the tendency of urethane 
foam to change the color when exposed to light.  
 
4.6 Bendable urethane is classified according density to the following categories:  
 
Table  (1)  
 
3Density kg/m category 
12-14.9  A 
15-19.9  B 
20-24.9  C 
25-29.9  D 
30-34.9  E 
35-39.9  F 
40-44.9  G 
45-49.9  H 
50-64.9  I 
65+ J 
 
 
 
         
4.6.1  taking confederation the condition surrounding manufacturing , the difference 
in density if agreed between seller and buyer should be as fallow:  
  - Density less than  40kg/m3 , the tolerance shouldn't be more than + 8% . 
- Density more than 40kg/m3 , the tolerance shouldn't be more than + 5% 
  
 
4.7 Dimension variation should be according what is agreed between the seller and 
the buyer . 
 
 Gulf Standard GSO …….  :2020  
 
 
4 
 4.8 The seller and the buyer have the right to agree to produce other density not 
mentioned in clause 6.4 In  proportion to the needs of the market and the 
customer . 
 
4.9 The product shall be stored in well - ventilated ware house far from the surface 
of the earth, and in atmosphere that free from combustion resulting from any 
heating device, and  free from fumes of solvents or acid fumes.  Also the 
finished ductile mattresses or cushions should not be stored – under any 
circumstances - under direct sun light or exp oser to ultraviolet light.   
4.10 sponge plate must be stumped with the name of the manufacturer, the category 
of sponge and the production date.  
 
5-  Mattresses  
 
5.1 The mattress should be made of polyurethane foam that co mply the specifications 
mentioned in clause 6.4, provided that it fr ee from any rectifying part or any other 
materials.  
 
5.2 Mattresses are made of urethane foam either from one or several parts of different 
of mold but it should be with same density:  
      A) the inner part made of foldab le urethane foam.  
      B) bag (the cover)  which contain the inner part. 
 
5.3 the inner part of the mattress should be made of urethane foam that comply the 
specification mentioned in clause 2 provided that its free from any rectifying part 
that might be h armful to any person who's contact with it (the ingredient must be 
free from  Coarse grains and particles ), the urethane foam is either molded directly 
or composed of parts, and it might have gaps on it.  
 
5.4 if the mattress is composed of different parts or different layers it should be 
homogenous and from the same density.  
 
5.5 the bag of the mattress should be made of clean fabric suitable for the purpose pf 
using, regular fabric and free from defects.  
 
5.6 Accomplished  mattress  
       Its permitted to manufacture mattress with different dimensions and thickness 
with agreement between the seller and buyer, provided that the percentage of Gulf Standard GSO …….  :2020  
 
 
5 
 variation is according table (2) and table (3) which concern the normative dimension 
of the mattress and tolerance permitted in centimeters.  
 
 
                                                         Table (2)  
     normative dimension of the mattress and tolerance permitted in centimeters.  
 
Dimension ( length - width ) cm  Tolerance permitted  
Less than 50  +  0.4 
50-80 + 0.05 
80-100 + 0.06 
100-140 + 0.08 
More than 140  + 1.0 
 
 
Table (3)  
 Mattresses Thickness  and permitted tolerance  
 
Density (cm )  Permitted tolerance  
4-6 + 0.2 
6-10 + 0.3 
10-15 + 0.4 
15-25 + 0.5 
More than 25  + 0.6 
 
Note: mentioned Thickness is not related to the length of the mattress  
 
5.7 labelling card of the mattress should be fixed and should indicate the length,  
width, normative thickness, density, category  in metric unit.   
 
5.8 in Accomplished  mattress  its allow to add allayer of brocade  but it should be 
recorded on labelling card. 
 
5.9 The product should be stored according what is mentioned in clause 4.9.  
 
6- cushions  
 
6.1 cushions shall made of bendable urethane category which mentioned in clause 
4.6., and its consist three parts :  Gulf Standard GSO …….  :2020  
 
 
6 
 A) the inner part which is made of foldable urethane foam.  
B) slice of foam with low thickness.  
C) the bag (outer cover).  
 
6.2 The inner part o f the polyurethane foam shall be manufactured according the  
      specification mentioned in clause 4, provided  that its free of any rectifying 
component or other materials.  
 
6.3 The foam slice should be made of foldable urethane foam, separating the inner 
part from the bag, its thickness should be range between 0.8 -1 cm.  
 
6.4 The bag (the outer cover)  should be made of clean fabric and free from defects.  
 
6.5 its permitted to man ufacture cushions with different dimensions and thickness by  
      agreement between the seller and buyer,  provided that their measurements and 
intensity are determined at the time of the sale, provide that the percentage of 
variation is according table (4 ) concerning normative dimensions and weights of 
the cushions and permitted tolerance.  
 
Table (4 )  
Normative dimension and weights for cushions and permitted tolerance  
 
Length  
 (cm )  Tolerance  
(cm)  
 Width  
(cm )  Tolerance  
(cm)  
 
Less than 50  + 0.3 Less than 50  +0.3 
50-80 + 0.5 50-80 + 0.5 
80-100 + 0.6 80-100 + 0.6 
 
7- Test methods  
 
Test methods should be applying according standards mentioned in clause 2.1 and 
appendix no ( A). 
  
8- the product should be stored according what is mentioned in clause 4.9. 
 
 
 
 Gulf Standard GSO …….  :2020  
 
 
7 
 APPENDIX ( A)  
 
 
Density test: 
This method describes the procedure used to determine the density of the foldable 
urethane foam.  
  
 Test sample:  
 Surface  – free sample  is used to measure  80x30x30 cm  
 
Method:  
 The sample is weight to be accurate scale that allows the weight to be accurately 
with up to +1% of the quantity weighted , length and width are measured using 
specific scale . 
 
 As for thickness, it is measured using a specific scale measured by a graduated disk.  
 
Density is estimated in kg, cubic meter.  
 
Density in kg/cubic meter sample weight in kg sample size in cubic meter  
 
  Gulf Standard GSO …….  :2020  
 
 
8 
 References : 
 
- ASTM D 3454  
- ASTM D3574