Is 10951:2002

Indian Standard

POLYPROPYLENE MATERIALSFOR MOULDING AND EXTRUSION

(First Revision)

ICS 83.080.20

(3 BIS 2002

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

Februay 2002 Price Group 7

Plastics Sectional Committee, PCD 12

FOREWORD

This Indian Standard (First Revision) was adopted by the Bureau of Indian Standards, after the draft finalizedby the Plastics Sectional Committee had been approved by the Petroleum, Coal and Related Products DivisionCouncil.

Polypropylene (PP) is another member of the polyolefin family, since its monomer, propylene, is an unsaturatedhydrocarbon and belongs to a class of chemical compounds called olefins. Because the monomers of polypropyleneand polyethylene (ethylene) are so similar, the polymers have many of the similar properties. However, there areseveral major differences, including density (polypropylene’s is lower), service temperature (polypropylene’s ishigher), rigidity (polypropylene is more rigid), resistance to environmental stress cracking (polypropylene’sresistance is higher), and susceptibility to oxidation (polypropylene is worse than polyethylene). Polypropyleneis characterized by good mechanical properties, excellent chemical and thermal as well as electrical propertiesand aesthetic appeal in applications such as clear films. Its lower cost per unit weight and high yield on avolume basis, due to the low density, offers considerable economic advantage to the converter and end-user.

Polypropylene may be processed by extrusion, injection moulding, and blow moulding. It may be t%rtherprocessedby compression moulding and thermoforming.

This standard was first published in 1984 with the title ‘Specification for polypropylene and propylene —Copolymer thermoplastics — Designation’. In this first revision the following changes have been made:

a) The title and scope have been modified.

b) The designation system has been thoroughly revised to align the same as far as possible with thecorresponding 1S0 standard. The types are differentiated from each other by a classification systembased on the appropriate levels of designator properties such as flexural modulus izod impact strength,melt flow rate (MFR) and information about intended application, method of processing importantcharacteristics, additives, colour, fillers and reinforcing materials.

c) The basic concept of type (product approval) and acceptance (product identification) tests have beenintroduced to make this standard more meaningful. On the basis of type test the product identificationcriteria is derived and fixed and the values obtained for various acceptance tests become the controllingspecifications.

This revision does not provide engineering and performance data which may be required to specifi a materialfor a particular application or method of processing.

Considerable assistance has been derived from 1S0 1873-1:1995 ‘Plastics — Polypropylene (PP) mouldingand extrusion materials — Part 1 Designation system and basis for specifications’ and ISO 1873-2:1997~Plastics — Polypropylene (PP) moulding and extrusion materials — Part 2 Preparation of test specimens anddetermination of properties’ issued by the International Organization for Standardization (1S0) while preparingthis revised version of the standard.

For the typical additional properties specified in 6.3.2 of this standard, the purchaser should establish his owncorrelation between the properties of the processed articles and the material properties required for theirachievement.

The composition of the Committee responsible for formulation of this standard is given in Annex C.

For the purpose of deciding whether a particular requirement of this standard is complied with, the final value,observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance withIS 2:1960 ‘Rules for rounding off numerical values (revised)’. The number of significant places retained inthe rounded off value should be the same as that of the specified value in this standard.

IS 10951:2002

Indian Standard

POLYPROPYLENE MATERIALSFOR MOULDING AND EXTRUSION

(First Revision)

1 SCOPE

1.1 This standard prescribes the designation system,requirements, methods of sampling and tests forpolypropylene (PP) thermoplastics material. It appliesto the material ready for normal use in the form ofpowder, granules or pellets and to materialsunmodified or modified by colorants, additives, fillers,etc.

1.2 This standard is applicable to all propylenehomopolymers and to copolymers of propylene with acontent of other 1-olefins of less than 50 percent (m/m),as well as blends of polymers containing at least50 percent (m/m) of aforementioned polymers.

1.3 It is not intended to imply that materials havingthe same designation give necessarily the sameperformance. This standard does not provideengineering data, performance data or data onprocessing conditions which may be required to speci~a material for a particular application andior methodof processing.

If such additional properties are required, they shallbe determined in accordance with the test methodsspecified in 6.3.2 if suitable.

1.4 This standard does not apply to propylene-basedrubber.

1.5 This standard does not cover masterbatches.

2 REFERENCES

The Indian standards listed in Annex A containprovisions which, through reference in this text,constitute provisions of the standard. At the time ofpublication, the editions indicated were valid. Allstandards are subject to revision, and parties toagreements based on this standard are encouraged toinvestigate the possibility of applying the most recenteditions of the standmds listed in Annex A.

3 DESIGNATION

3.1 The designation system given in 3.2 into whichthe materials are classified according to method ofprocessing, their designator properties such asflexural modulus, izod impact strength and melt flowrate and certain other supplementary information shallbe used. The designation system is only intended to

indicate a broad classification and in mostcircumstances specific values of the designatorproperties and other characteristics as given in 6 shallbe required.

3.2 The designation shall consist of followinginformation given in the order presented and shall becodified in different blocks as indicated below:

Block 1 For Indian StandardBlock 2 Identification of the plastic by its

symbol (PP) and information aboutthe composition of the polymer(see 3.3)

Block 3 Position 1:Intended application ormethod of processing (see 3.4).Positions 2 to 8: Importantcharacteristics, additives andsupplementary information (see 3.4)

Block 4 Designator properties (see 3.5)Block 5 Fillers or reinforcing materials and

their nominal content (see 3.6)Block 6 For the purpose of specifications, an

optional sixth block may be addedcontaining additional information

The first character of the individual block shall be ahyphen. The blocks shall be separated from each otherby comma (,).

If a block is not used, this shall be indicated bydoubling the separation sign, that is by twocommas (,,).

3.2.1 For Block 1 the number and year of this Indianstandard shall be indicated.

3.3 Block 2

In this block, after the hyphen, polypropylene plasticsare identified by the symbol “PP”, followed by ahyphen and a single code giving additionalinformation on the polymer as specified in Table 1.

3.4 Block 3

In this block, information about intended applicationand/or method of processing is given in position 1and information about important characteristics,additives and colorants in positions 2 to 8. The codeto be used are specified in Table 2.

If information is presented in positions 2 to 8 and no

1

IS 10951:2002

specific information is given in position l, the letterX shall be inserted in position 1.

Table 1 Code Used for AdditionalInformation in Block 2

(Clause 3.3)

If a property value falls on or near a range limit, themanufacturer shall state which range will designatethe material. If subsequent individual test values lieon, or on either side of the cell limit, because ofmanufacturing tolerances, the designation is notaffected.

3.5.1 Flexural ModulusCode Definition(t) (2)

H Propylenehomopolymer

R Tbcrmoptastic propylene random copolymercontaininganotheroiefinic monomer(or monomers)having no functional group other than the oletirricgroup,copolymerizedwith propylene

Bl) Thermoplasticpropyleneimpactcopolymerconsistingof two or morephasesof either a propyleneplasticHor a propyleneplasticR andrubberphasescomposedot propylene and another olefinic monomer (ormnnomers)havingnotimctionalgroupotherthantheoleiinic groLIp,addedin-situ orphysicallyblendedwiththepropyleneplasticmatrix.

I) ‘rbis groupof polymersweretermed‘block’ copolymersin thepmt.

Table 2 Code Used in Block 3

(Clause 3.4)

The flexural modulus shall be determined inaccordance with IS 13360 (Part 5/See 7)/1S0 78.

The possible values of flexural modulus are dividedinto six ranges, each represented by a 2-digit code asspecified in Table 3.

Table 3 Ranges of Flexural Modulus in Block 4

(Clause 3.5. 1)

Code Range of Flexural Modulus (MPa)

(t) (2)

02 <400

06 >400 buts 800

10 >800 but< 1200

16 >1200 but< 2000

28 >2000 but< 3500

Code(Position 1)

(t)

B Blow moulding

c Calendering

E Extrusion

F Extrusionof films

G General use

H EXtrUSiOl\~OatiOg

K Cable and wire coating

L Monofilament extrusion

M Injection moulding

P Pipeandtubeextrusion

Q Compressionmoulding

R Rotationalmoulding

s Sintering~

Tape manufacture

x No indication

Y Textile yams. spinning

Code (Positioos 2-8) 40 >3500

(2)3.5.2 Izod Impact Strength

Processingstabilized

Antibtocking

Coloured

Powder

Expandable

Specialburningcharacteristics

A

B

c

D

E

F

The notched izod impact strength shall be determinedin accordance with IS 13360 (Part 5/See 4)/1S0 180.

The possible values of notched izod impact strengthare divided into six ranges, each represented by a2-digit code as specified in Table 4.

G

H

K

L

Granules

Heat-ageingstabilized

Metal deactivated

Light or weatherstolilized

Table 4 Ranges of Izod ImpactStrength in Block 4

(Clause 3.5.2)

Code Izod Impact StrengthkJ/m2

(2)

M

N

P

Nucleated

Natural (nocolouradded)

Impactmodified (t)

02

05

09

16

25

35

<3

>3but<6>6but<12

> 12 but<20

>20 but <30

>30

R

s

T

Mould releaseagent

Slip agent

Transparent

Y Increaseelectricalconductivity

Antistaticz 3.5.3 Melt Mass Flow-Rate (MFR)

The melt flow-rate (mass) shall be determined inaccordance with IS 13360 (Part 4/See 1)/1S0 1133 at230”C with a load of 2.16 kg. The possible values ofmelt flow rate are divided into eleven ranges, eachrepresented by a 3-digit code as specified in Table 5.

3.5 Block 4

In this block, the range of flexural modulus isrepresented by a 2-digit code (see 3.5.1), the range ofimpact strength by a 2-digit code (see 3.5.2) and therange of melt flow rate by a 3-digit code (see 3.5.3).The codes are separated from each other by hyphens.

2

Is 10951:2002

Table 5 Range of Melt Mass FlowRate (MFR) in Block 4

(Clause 3.5,3)

Code

(1)

000()()I003006012022045090200400

700

MFR (g/10 rein)

(2)

<0.10>0.10 but s 0.20>0.20 but s 0.40~ 0.40 but s 0.80>0.80 but< 1.5> 1.5 but<3.O>3.0 buts 6.0: 6.Obut S 12.0>, 12.0 but<25.O>25.0 but s 50.0

>50.0

3.6 Block 5

In this block, the type of filler and/or reinforcingmaterial is represented by a single code in position 1and its physical form by a second code in position 2,the codes being as specified in Table 6. Subsequently(without a space), the mass content maybe given by a2-digit number in positions 3 and 4.

3.7 Block 6

Indication of additional requirements in this optionalblock is a way of transforming the designation of amaterial into a specification for a particularapplication. This may be done for example by referenceto a suitable published Indian standard.

3.8 Coding Examples

1s 10951 PP– HI Ill

Block 1 I Ill(Indian Standard)

IllBlock 2(Identification of the plastics)

Ill

Symbol III

Homopolymer ~ ~

Block 3(Intended application or processing,additives and supplementary information)

For film extrusion

Table 6 Code for Fillers and ReinforcingMaterials in Block 5

(Clause 3.6)

Code Material Code Form(1) (2) (3) (4)

B Boron B Beads,spheres,ballsc Carbon D Powder

F FibreG Glass G Ground

H Whiskers

K Calcium carbonateL I)r-~1]“los~

M I)Mineral, I)met~,Z)Mineralfijlers

s Synthetic,‘)organicT Talcw woodx Not specified x Not specifiedz OtberslJ z Otbersl)

l)Thesematerialsmaybe furtherdefinedby their chemical symbol.

In the caseof metals(M), it isessentialto indicatethe type of metalby meansof itschemicalsymbol.

z)Mineral fillers shall be designatedmore preciselyif a symbol is

available.

Mixtures of materialsand/or formsmaybe indicatedby combiningthe relevantcodesusingthesign“+” andplacingthewhole betweenparentheses,For example, a mixture of25 percentglasstibre (GF)and 10 percent mineral powder (MD) would be indicated by

(GF 25 + MD IO).

3.8.1 A polypropylene homopolymer (PP-H) intendedfor film extrusion (F), with antioxidants (processingstabilized) (A) natural (not coloured) (N), having atlexural modulus of I 660 MPa ( 16), an impactstrength of 4 kJ/mz (05) and a melt flow rate of 2.9g/1Omin (022), shall be designated as:

F–A–N 16-05-022 IIll IIIll IIIll IIIll IIIll IIIll IIill IIII IIIll IIJ~~ II

Processing stabilized, natural (not coloured) III ,,I

Block 4II

II

‘Des;Et;;, :xu;:s)~ i

Impact strength ~

I II II II II II II II II I1 II II II II Ii I

Melt flow rate I II

Designation : –1S 10951 :2001, –PP–H, –F–A–N, –16-05---022

3

1s 10951:2002

3.8.2 A thermoplastic propylene impact copolymer

(PP-B) for extrusion of sheets (E), with antioxidants(processing stabilised) (A) having flexural modulus

Is 10951 PP- BI Ill

Block 1 I Ill(Indian Standard)

Ill

Block 2(Identification of the plastics)

111

Symbol III

lnlpactcopolymer~ ~

Block 3(Intended application or processing,additives and supplementary information)

For extrusion of sheet ! 1 1 ,, t I

of 1 200 MPa (10), an impact strength of 22.5 kJ/m2(25) and a melt flow rate of 1.5 g/10 min (012), withoutspecial modification but coloured (C), would bedesignated as:

E-A-C 10-25-012 IIll Ill IIll Ill IIll Ill IIll Ill IIll Ill IIll Ill IIll Ill IIll Ill IIll Ill IIll Ill I

Impact strength I I1

Melt flow rate I

(

Designation : –IS 1095 [ :2001, –PP–B, –E–A–C, –10–25-012

3.8.3 A polypropylene homopolymer (PP-H) intendedfor injection moulding (M), having a flexural modulusof 4500 MPa (40), an impact strength of 2 kJ/m2 (02)

Is 10951 PP– H MI 1111

Block 1 I 1111(Indian Standard) 1111Block 2(Identification of the plastics)

1111

Symbol IIll

Homopolymer _--_-illI

Block 3(Intended application or processing, I

additives and supplementary information) I

For injection moulding

IIIIIIIIIII

and a melt flow rate of 3.5 g/1Omin (045), reinforcedwith 40 percent talc powder (TD 40) shall bedesignated as follows:

-02-045II

II

II

II

II

IIII

II

II

II

II

IIIIIIIIIII

Block 4(Designator properties)

;il~Flexural modulus I II

,~pact strength ~ I ~

Melt fjOW r-ate ~

I

Block 5(Fillers or reinforcing materialsand their nominal content

T-D-40

1111

111111111111Ijjl11111111Iiij1111Iii iI,pI,11,IliIll,,11Ill

iI

iIill;

l!!,

Talcjl!

PowderMass content, percent ~ ~

I

Designation : –IS 10951:2001, –PP–H, –M, 40-02-045, –T–MO

4’

1S 10951:2002

having aflexural modulus of 1650 MPa (16), animpact strength of 4.0 kJ/m2 (05), a melt flow rate of3.0 g/1O min (022) and meeting the requirement ofIS 11197, shall be designated as given below:

3.8.4 Coding Example (Designation Transformed intoa Specification)

A polypropylene homopolymer (PP-H) intended fortape manufacture (T), which is light stabilized (L),

16-05-022 99 IS 11197:1985

I I

II

Is 10951 PP– HI Ill

Block 1 I(Indian Standard)

IllIll

Block 2(Identification of the plastics)

Ill

Symbol 1II

Homopolymer ~1

Block 3(Intended application or processing,

additives and supplementary information)

T–LIll

IllIllIll

IIIIIIII

IIIIIIIIIIIIIII

IIIIIIIIIIIIIIII

IIIIIIIIIIIIIIIIIIII

IIIIII

IIIIIIIIIIIIIIIIII

i

IIIIIIII1IIIIIIIIIIIII

illIll,11,11

For tape manufacture,!:

III1.IIIII

Light stabilized~ ‘

Block 4(Designator properties)

Flexural modul.s~ !Impact strength ~ I

Ii

III

Block 5(Fillers or reinforcing materialsand their nominal content

Not used II iBlock 6

(Additional information) II

‘eeting ‘he ‘equirernents ‘f ~other publlshed lndlan standard

Designation : –1S 10951:2001, –PP–H, –T–L, –16-05-022, , IS 11197:1985

4 PREPARATION OF TEST SPECIMEN

It is essential that specimens are always prepared bythe same procedure (either injection moulding orcompression moulding), using the same processingconditions.

The procedure to be used for each test method isindicated in Table 9.

4.1 Treatment of the Material before Moulding

Before processing, no pretreatment of the materialsample is normally necessary.

4.2 Injection Moulding

Injection moulded specimens shall be prepared inaccordance with 1S 13360 (Part 2/See 3)/1S0 294-1or IS 13360 (Part 2/See 7)/1S0 294-3 using theconditions specified in Table 7.

4.3 Compression Moulding

Compression moulded sheets shall be prepared inaccordance with IS 13360 (Part 2/See 1) using theconditions specified in Table 8.

The test specimens required for the determination ofthe properties shall be machined from thecompression-moulded sheets in accordance withIS 13360 (Part 2/See 4)/1S0 2818 or stamped usingappropriate punch.

A frame mould may be used, but it is necessary tostart cooling whilst simultaneously applying the fillpressure. This avoids the melt being pressed out ofthe frame and avoids sink marks.

For thicker sheet (4 mm approx), a positive mouldhas been found to work satisfactorily. The preheatingtime depends on the type of mould and the type ofenergy input (steam, electricity). For frame mould, 5

5

1s 10951:2002

min is usually sufficient but for positive mould, dueto the bigger mass, a preheating time of up to 15 minis necessary, especially if electric heating is used.

Table 7 Conditions for InjectionMoulding of Test Specimens

(Clause 4.2)

Material Melt Mnuld Average Hold TotallemperntureTemperature Injection Pressure Cycle

Velueity Time Time

“c c(,. mmis s s

(1) (2) (3) (4) (5) (6)

MFR <1.5 255 40 200 ~20 40 60g/10 Inin

1,5 s MFR 230 40 200 ~20 40 60~7g/10min

MFR27 200 40 200 ~20 40 60

g/10 min

NOTE — Heatsensitivepolypmpylenesmay undergomolecularbreakdownduringrnmdding:thereforeanincreaseinthemelttlowrateto> 1,5 times the original value shall be avoided with suchmateriirls.If theMFR iocreawsbymorethan1.5timestheoriginalvalue, themelt temperatureshallbe lowered, 10“Cat atime, untilthe increase in MFR is <1.5 times the origincd value. Thisadjustmentin melt temperatureshallbereported.The uniformityotlhe mouldingsshallbecheckedby weighing.Theirmassesshallnot ditTerby more than I percentfrom eachother.

5 CONDITIONING

Test specimens shall be conditioned in standardatmospheric condition of 27 * 2°C and 65 + 5 percentrelative humidity in accordance with 1S 13360 (Part 1)before performing the required tests.

Test shall be conducted in the standard atmosphericcondition of 27 * 2°C and 65 + 5 percent relativehumidity.

6 REQUIREMENTS

6.1 The material shall be uniform and free from foreignmatter.

6.2 Property Requirements

6.2.1 Minimum Requircmen[s

The minimum properties required to be measured for

polypropylene materials are flexural modulus, izodimpact strength and melt mass flow rate.

6.2.1.1 Flexural modulus

The flexural modulus of the material shall be as agreedto between the purchaser and the supplier and shallbe determined by the method prescribed in IS 13360(Part 5/See 7)/1S0 178. The value of flexural modulusshall be within + 20 percent of the specified flexuralmodulus, if this is 1 200 MPa or above and shall bewithin + 30 percent of the specified flexural modulus,if this is less than 1200 MPa.

6.2.1,2 Izod impact strength

The izod impact strength of the material shall be asagreed to between the purchaser and the supplier andshall be determined by the method prescribed inIS 13360 (Part 5/See 4)/1S0 180. The value of izodimpact strength shall be within * 20 percent of thespecified flexural modulus, if this is 12 kJ/m2or aboveand shall be within + 30 percent of the specified izodimpact strength, if this is less than 12 kJ/m2.

6.2.1.3 Melt mass-flow rate (MFR)

The melt mass-flow rate of the material shall be asagreed to between the purchaser and the supplier andshall be determined by the method prescribed in1S 13360 (Part 4/See 1)/JSO 1133. The value of meltflow rate shall be within+ 20 percent of the specifiedmelt flow rate, if this is I g/1Omin or above and shallbe within+ 30 percent of the specified melt flow rate,if this is less than 1 g/1Omin.

6.3 Additional Requirements

6.3.1 Other, properties to be selected shall bedetermined by the characteristics required forprocessing and the characteristics required of theprocessed article.

NOTE — The purchasershould establishhis own correlationbetweenthe propertiesof the processedarticle andthe materialpropertiesrequiredfor theirachievement.

6.3.2 Typical Additional Properties

The typical additional properties to be measured alongwith its corresponding test methods are given inTable 9.

Table 8 Conditions for Compression Moulding of Test Specimens(Clause 4.3)

Material Morddiog Average Demoulding FuR Full Pre-heating Pre-heatingTemperature Cooling Rate Temperature Pressure Pressure Time Pressure

“c OC/min “c MPa min MPa min

(1) (2) (3) (4) (5) (6) (7) (8)

A II grades 2[0 15 s 40 5110* 5* I Contact 5 to 15

*LJse5 MPa for frame mould and 10 MPa for positivemould.

6

Is 10951:2002

Table 9 Typical Additional Properties and Corresponding Test Methods(Clause 6.3.2)

SI PropertyNo.

(1) (2)

O MechanicalProperties

a) Tensile yield strength,MPa

b) Elongationatyield, percent

c) Tensile strengthat break,MPa

d) Elongationat break,percent

e) Charpy impactstrength,kJ/m2

f) Hardness — Rockwell, R— Shore, D

ii) Thermal Properties

a) Melting temperature,°C

b) Temperatureofdetlectionunder load, “C

c) Vicat softeningtemperature,°C

d) Flammability, mrnlmim

e) Ignitability (oxygenindex),percent

iii) Electrical Properties

a) Relative permittivity

b) Dk.sipationfactor }

c) Volume resistivity

d) Surfaceresistivity }

e) tXelectric strength

iv) Other properties

a) Water absorption

b) Density

Method of Test, Refto

(3)

IS 13360 (Part 5/See 1)/1 S0527-1

aod

IS 13360 (Part 5/See 2) / ISO 527-2

IS 13360 (Part 5/See 5) /1S0 179

IS 13360 (Part 5/See 13)

1S13360 (Part 5/Secl 1)

IS 13360 (Part 6/See 10)

IS 13360 (Part 6/See 3)/1S0 75-1

1S 13360 (Part 6/See 17)/ 1S0 75-2

1S 13360 (Part 6/See1)/1S0306

IS 13360 (Part 6/See 4)/ 1S0 1210

IS 13360 (Part 6/See 19)/ 1S0 4589-2

IS 4486

IS 13360 (Part 7/See 1)/ ISO 3915

IS 2071 (Part 1)

IS 13360 (Part 8/See 1)/1S062

1S 13360 (Part 3/See I)/ 1S0 1183

6.4 Special Requirements for Foodstuffs,Pharmaceuticals and Drinking Water Applications

All additives used in the material which is meant forusage in contact with foodstuffs, pharmaceuticals anddrinking water shall meet the requirements specifiedin 1S 10909.

When the products are used in contact with foodstuffs,pharmaceuticals and drinking water, its requirementswith respect to the material shall also be met as perIs 10910.

7 TESTS

7.1 Classification of Tests

7.1.1 Type Tests (Product Approva/)

The following shall constitute the type tests (productapproval):

a) Flexural modulus (see 6.2.1.1);

b) lzod impact strength (see 6.2.1.2); andc) Melt mass-flow rate (see 6.2.1.3).

7.1.1.1 Polypropylene material shall be subjected to

product type approval in accordance with details givenin Annex B.

7,1.2 Acceptance Tests (Product Identljication)

7.1.2.1 All the tests which the purchaser shall establishout of those listed in 6.3.2 by correlating the propertiesof the proposed article and the material propertiesrequired for their achievement.

7.1.2.2 The batch shall be accepted if the polypropylenematerial is found to comply with the requirements ofacceptance (Product identification) tests givenin 7.1.2.1.

8 PACKING AND MARKING

8.1 Packing

The material shall be delivered in suitable form ofpacking, as agreed to between the purchaser and thesupplier.

8.2 Marking

Each container and package shall be clearly markedwith the following:

7

Is 10951:2002

a)

b)

c)

d)

e)

f)

Name and type of the material,

Designation code,

Net mass of the material,

Batch number,

Month and year of manufacture of the mate-

rial, and

Indication of the source of manufacture andtrade mark, if any.

8.3 BIS Certification Marking

The containers and packages may also be marked withthe Standard Mark.

8.3.1 The use of the Standard Mark is governed bythe provisions of the Bureau of Indian Standards Act,1986 and the Rules and Regulations made thereunder.The detai Is of condit ions under which the Iicence forthe use of the Standard Mark may be granted tomanufacturers may be obtained from the Bureau ofIndian Standards.

9 SAMPLING

9.1 General

in drawing, preparing, storing and handling samples,the precautions and directions given in 9.1.1 to 9.1.6shall be observed.

9.1.1 Samples shall not be taken in an exposed place.

9.1.2 The sampling instrument shall be of stainlesssteel or any other suitable material on which thematerial shall have no action. The instrument shallbe clean and dry.

9.1.3 Precautions shall be taken to protect the samples,the materials being sampled, the sampling instrumentand the containers for samples from adventitiouscontamination.

9.1.4 The samples shall be placed in a suitable clean,dry, air-tight, sheet metal or glass container on whichthe material has no action. The sample container shallbe of such a size that it is almost completely filled bythe sample.

9.1.5 Each sample container shall be sealed air-tightwith a stopper after ti Iling and marked with full detailsof sampling such as the date of sampling, the monthand year of manufacture of the material, etc.

9.1.6 Samples shall be stored in such a manner thatthe temperature of the material does not vary undulyfrom the normal temperature.

9.2 Scale of Sampling

9.2.1 Lot

In a single consignment, all the containers of the same

type of the material and drawn from a single batch ofmanufacture shall constitute a lot. If a consignment isknown to consist of different batches of manufactureor of different sizes of containers, the containersbelonging to the same batch and size shall be groupedtogether and each such group shall constitute aseparate lot.

9.2.2 For ascertaining the conformity of the materialin a lot to the requirements of the specifications, testsshall be carried out for each lot separately. The numberof containers (n) to be selected from a lot (N) shall bein accordance with Table 10.

Table 10 Number of Containersto be Selected for Sampling

Lot size

N

(1)

upto 3

4to 15

16t050

51 to 100

Iol to300

301 to 500

No. of Containers to be Selected

(;)

Each container

3

4

5

7

10

501 andabove 15

9.2.2.1 These containers shall be selected at randomfrom the lot. For the purpose, reference may be madeto Is 4905.

9.3 Preparation of Test Sample and Referee Sample

9.3.1 Sampling Instrument

The sampling instrument made of stainless steel shallbe as shown in Fig. 1. It shall be capable of takingsamples from all points when inserted into thecontainer.

9.3.2 From each of the containers selected, portions ofthe material shall be drawn with the help of the samplinginstrument. For this purpose, the material shall be takenfrom different points, at least 75 mm away in the caseof small containers. The total quantity of the materialcollected from each container shall be sufficient toconduct tests for the determination of the variouscharacteristics and shall be not less than 1.5 kg.

9.3.3 Out of these portions, a small but equal quantityof the material shall be taken out and mixed thoroughlyto form a composite test sample. The composite testsample thus formed shall be divided into three equalparts and transferred to separate bottles which are thensealed air-tight and Iabelled with all the particulars ofsampling given under 9.1.5. One of these bottles shallbe marked for the purchaser, one for the supplier andthird for the referee.

8

Is 10951:2002

L-x

+C13” )!---Q- —.. —-— -— -—- —-- —-— -

p-x—---SECTION XX

FIG1. SAMPLINGINSTRUMENT

9.3.4 The remaining portion of the material fi-omeachcontainer shall be divided into three equal parts andeach part shal Ibe transferred to separate bottles whichare then sealed air-tight with stoppers and Iabelledwith all the particulars of sampling given under 9.1.5.The material in each such sealed bottle shall constitutean individual test sample. These individual testsamples shal I be grouped into three sets in such a waythat every set has a test sample representing eachcontainer selected. One of the three sets shall bemarked for the purchaser, one for the supplier and thethird for the referee.

9.3.5 Referee Samples

Referee sample shall consist of the composite testsample and a set of individual test samples markedfor the purpose and shall bear the seals of the purchaserand the supplier. It shall be used in case of disputebetween the two.

9.4 Number of Tests

9.4.1 Tests for the determination of flexural modulus,izod impact strength and melt mass-flow rate shaIl beconducted individually on each of the samples in theset of individual samples.

9.4.2 Tests for the determination of the remainingcharacteristics shall be conducted on the compositesamples.

9.5 Criteria for Conformity

a) Each of the test results for flexural modulus,izod impact strength and melt mass-flow ratesatisfies the corresponding requirementsgiven in 6.2.1.1, 6.2.1.2 and 6.2.1.3.

b) The test results on the composite sample forthe remaining characteristics satisfy thecorresponding requirements given in 6.3,6.4and 7.1.2.1.

Is 10951:2002

[S No.2071

(Part l): 1993

4486:1967

4905:196810909:200 I

10910:1984

11197:1985

13360(Part 1): 1992(Part 2/See 1):1992

(Part 2/See 4) :1999/1s02818:1994

(Part 3/See I) :1995/1s01183:1987

(Part 4/See l):2000/1s01133: 1997

(Part 5/See I) :1996/lso527.1 : 1993

(Part 5/See 2) :1996~lS0527-2(Part 5/See 4) :1996/’1s0180: 1993

(Part 51Sec 5) :1996/1S0179: 1993

ANNEX A

(Clause 2)

LIST OF REFERRED INDIAN STANDARDS

TitleHigh voltage techniques : Part 1General definitions and test require-mentsRecommended methods for the de-termination of the permittivity anddielectric dissipation factor of elec-trical insulating materials at power,audio and radio frequencies inciud-ing metre wavelengthsMethods for random samplingPositive list of polypropyleneand itscopolymers in contact withfoodstuffs, Pharmaceuticals anddrinking water @rst revision)Polypropylene and its copolymers forits safe use in contact with foodstuffs,pharmaceuticals and drinking waterMonoaxially oriented polypropylenetapesPlastics — Methods of testingIntroductionSampling and preparation of testspecimens, Sec 1 Compressionmoulded test specimens of thermo-plastic materialsSampling and Preparation of testspecimens, Sec 4 Preparation oftest specimens by machining (@trevision)Physical and dimensional properties,Sec I Determination of densityand relative density of non-cellularplasticsTheological properties, Sec 1Determination of the melt mass-flowrate (MFR) and the melt volume-flow rate (MVR) or thermoplastics(first revision)Mechanical properties, Sec 1Determination of tensile propertiesGeneral principlesDetermination of tensile propertiesTest conditions t’or moulding andextrusionMechanical properties, Sec 4Determination of izod impactstrengthMechanical properties, Sec 5Determination of charpy impact.strength

1SNo. Title(Part 5/See 7) : Mechanical properties, Sec 71996/ISO Determination of flexural properties178:1993(Part 5/See 11) Mechanical properties, Sec 111992 Determination of indentation

hardness of plastics by means ofdurometer (Shore hardness)

(Part 5/See 13) Mechanical properties, Sec 131992 Determination of Rockwell hardness(Part 6/See 1) Thermal properties, Sec 11992/ISO Determination of Vicat softening306:1994 temperature of thermoplastics

materials[Part 6/See 3) Thermal properties, Sec 3

1997/1s0 Determination of temperature75-1:1993 deflection under load— General test

method(Part 6/See 4) Thermal properties, Sec 41997/1s0 Determination of the burning1210:1992 behaviour of horizontal and vertical

specimens in contact with small-flame ignition source

(Part 6/See 10) Thermal properties, Sec 10 Deter-1992 mination of melting behaviour

(melting temperature or meltingrange) of semi-crystalline polymers

(Part 7/See 1) Electrical properties, Sec 11996/1S0 Measurement of resistivity of3915:1983 conductive plastics(Part 6/See 17) Thermal properties, Sec 171997/1s0 Determination of temperature75-2:1993 deflection under load — Plastics and

ebonite(Part 8/See 1) Permanence/Chemical properties,1997/1s0 Sec 1 Determination of water62:1980 absorption(Part 2/See 3) Sampling and preparation of test2000 specimens Sec 3 Injection

ISO 294-1: moulded test specimens of1996 thermoplastic materials(Part 2/See 7) Sampling and preparation of test2000/1s0 specimens, Sec 7 Small plates

294-3: (jirst revision)1996

(Part 6/See 19) Thermal properties, Sec 192000/ Flammability by oxygen index

1S0 4589-2: Elevated temperature test1996

10

IS 10951:2002

ANNEX B

(Clause 7.1.1.1)

PRODUCT TYPE APPROVAL

Polypropylene (PP) material of a particular designationfor which the product/t ype approved is required shallbe subjected to the tests for flexural modulus, izodimpact strength and melt flow-rate (MFR),

PP material of that particular designation successfullypassing in these product/type approval tests shall befor other requirements (Product identification tests)as stipulated in 7.1.2.1 which would be recorded andthese shall be the control Iing specifications as long asthere is no change in the grade designation of the PPmaterial, as fixed.

In the event of any change in the grade/designation of

the PP material reapproval will be required and thetype tests shall be carried out afresh and the controllingspecifications for acceptance test redetermined andfixed.

When the proposed changes are such that it may notbe expected to significantly affect the performance(satisfactorily passing the type tests) the certifying/testing authority may at its discretion recommendwaiving complete reapproval or may require onlypartial reapproval in order to determine thesignificance and acceptability of the proposed changesand to redetermined the controlling specification foracceptance tests.

11

1s 10951:2002

ANNEX C

(Foreword)

COMMITTEE COMPOSITION

Plastics Sectional Committee, PCD 12

Orguni:a/ion

Internet Exchange Next.com Limited, Mumbai

Amincs and Plasticizers Ltd, Mombai

Bakelite Hylam Ltd, Hyderabad

Building Materials and Technology PromotionCouncil, New Delhi

Central Institute of Plastics Engineering and Technology, Chennai

Central Food Technological Research Institute, Mysore

Gas Authority oflndia Md, Noida

GE Plastics India Limited, Gurgaon

GhtrrdaCbemicnls L.td,Thaoe

Go@at State Fwtilizers Company Limited, Vadodara

Haldia Petrochemicals Ltd, Kolkata

Hindustan Polymers Ltd, Mombdi

Indian Centre tbr Plastics in Environment, Mumbai

Indian Petrochemicals Corporation Limited, Vadodara

Indian Institute of Packaging, Mombai

Indian Plastics institute, Mumbai

Indian Toxicological Research Centre, Lucknow

Jain Irrigation Syslcrns Ltd, Jalgaon

1 U,-s(n& ‘1’ouhroLtd, Mombai

Mi,li:wy of[)cfcoce (R&D), Kanpur

Ministry of[>ctknce, RDSO, Locknow

Mioishy of Health and Family Welfare, DGHS,New Delhi

Ministry ot’1’omlProcessing Industries,New Delhi

National CIwmical Laboratory, Porw

National Dairy Development Board, Anand

Representative(s)

Smu SArOJPCHOWDHARY{Chairman)

Srm[V.V.Krx.amDRR. V. UTEKAR(Afternate)

DRC. S.NARASJMHANDRM. BALAKRJSHNAN(Alternate)

Mu J. SEi-JGUPTA

DrrVUAIKOMARDRK. PALANIVELU(Alfernate)

Smo S. K. KtmrMSHRtBALDEVRAJ(Alternate)

Stau SmvM BASUSmuV. K. SINcm(Alternate 1)Smu MANISHKHANDELWAL(Akertrate 11)

Gmrw- MANAGERzDR(Smrrhs.+n)R.msmrrBHARDWAJ(Alternate)

DRB. K. DESAIDRU,M. VAKIL(Alternate)

SHRJB. D.AOHVARYUDRY.P. SJNGH(Alternate)

!%u SHANKARBANERJESSHRIAMITAVAS.mVAL(A/termte)

Smu S. V.PARVEENSmuN. C. DHGCENDRANATH(Ar’terrraie)

DRA.N. BHAT

Smr J. B. KAMATSmoV.C. FRANCIS(Afternafe)

SmuP.V.NAKAYANANDR N. G. MOKASHJ(Alternate)

Mu D.R. PATSLStrruR. K. AGGARWAL(Alternate)

DRV.P.SHARMA

DRH.C. MRUJHVUNJAYASswoS. B. Jowa(Alternate 1)Smw A. P. CHoo&rrr (Alternate II)

SmuV.MOWSHRIR. SOBAMo (Alternate)

SmrrM.N. SwDRL. D. KHANOPAL(Afterrrafe)

JomrrDIRECTOR(RUBBER)DTRSCTOR(SS) (Alternate)

ADDLDJJWCJORGJMRAL(PFA)SrmuSUNDARLfi (Alternate)

Sm 0. P.GERA

DRS. S. MANAJANDRS. S. KULKARNJ(Alternate)

DRR. S. LATHANASnmS. K. KHANDELWAL(Alternate)

(Continued on page 13)

12

1s 10951:2002

1

(Continuec/~rom guge I2)

(lrganizatiwr

National Organic Chemical Industries Ltd, Mumtrai

Nuchem Ltd, Faridzdrad

Permaii Wallace Ltd, Bhopal

Reliaoce Industries Ltd, Mumbai

Saint-Gobain Vctrotex India Ltd, Hyderabad

Shivalik Agro-Poly Products Ltd. Parwanoo, HP.

Shriram Fertilizers& Chemcials, Kota

Shriram Institule for Industrial Research, Delhi

Supreme Petrochenr Ltd, Mumbai

Tata Engg & [.ocomotive Co Ltd, Jamshedpur

The All India Plastics Mamdactorcrs Association, Mumbai

The Plastics & Linoleums Export Promotion Council, Mumbai

VIP Industries. Mumbai

XPRO India L.td,Faridabad

BIS Directorate General

Member-Secretary

%aa T.JLwww

Joint Director (PCD), BIS

Organization

Retiance Industries Ltd, Mumbai

All India Plastic Ioddstries Association, Delhi

Bhor 1ndustries Ltd, Mmnbai

Thermoplastics Subcommittee, PCD 12:3

Caprihans (India) Pvt Ltd, Mumbai

CeritralInstitute of Plastics Engineering&Technology, Chennai

Colour-Chem Limited, Mumbai

GE Plastics India Ltd, Dist Vadodara

Gujasat State Fertilizers Co Ltd, Vadodara

Haldia Petrochemicals Ltd, Kolkata

Representative(s)

Sau V.K.SwimSHRIJ. K. VADDMRIA(Alternate)

DRR. M. MEHTA

SHRIC. C. SAKARDASHRIS. K. KODESIA(Alternafe)

!JRY. B. VASUDEODRK. S. JADHAV(Alternate)

SHRIS.SUNTJAV.AMSmu S. K. GHOSH(Alternate 1)I)RB. J. C. BASU(.41ternafe 11)

SW ARUNANAFJD%o YOGIUJ hPUR (Alternate)

Smu M. S. TruPArraSmu R. C. GUPTA(Alternate)

DRR. C. SOOD

SmuR.RANGARAJANSm B. A. RAKHANGI(Alternate)

Stw U.K.NAm[SfirwAmA. D.SAM (Alternate)

SHIUR,K.AGGARWALSmI K. B. EASWARAN(Alternafe)

SIN R.P.KALYANFUR

Strlrl.%DJWWH.4ROYSmuA. S. DMvs (Ahernate)

Mu C. BmwcmSmuMANMOHANKRISHAN(Alternate)

Mu ANJANKm Dkector & Head (PCD)

[Representing Director General (Ex-oflcio)]

Representative(s)

DRY.B. VASUDEO(Convener)SW D. Jm

Sm V.V.I%!D~RDRV. S. Josm (Alternate 1)

Smu S. V. CHARYA(Akerfrafe II)

MaoM, K. DA’tTAIhYlh S,V. PEDDADA(Alfernate)

DRR.JANARDWSmuS. K.CHAITAPDDHYAY(Alternate)

Mu S. S. Kutswuu

Smr P.V.Mm MomDRGoP.u IW+mrmm(Ahernate)

Smr B.D.AmwMvoDRY.P. Smcas(Alternate)

%0 tiAvA !hrwtiSmI M DATrA(Alternate I)StrruR. L. WmsnvA(Alternate II)

(Continued on page 14)

13

Is 10951:2002

(Corrfinuedfiom page 13)

Organization

Hindustan Fluoro Carbon Ltd, Hyderabad

Indian Petrochemicals Corporation Ltd, Vadodara

Ministry of Defence (DGI), Kanpor

Ministry of Defence (R & D), Kanpur

National Organic Chemicals [odustries Ltd, Mumbai

Sriram Fertilizers& Chemicals, Kota

Supreme Petrochem Ltd, Mumbai

The AlI India Plastics Manufacturers’ Association, Mumbai

The Hindustan Polymers Ltd, Mumbai

XPRO India Ltd, Faridabad

14

Representative(s)

ORP. S. DAS

SHRIJ.B. KAMATSmr V. C. FRANCIS(Alrer?rate)

DRS.P. SrNGNSHRIGUUSHTravam (Alternate)

DRL. D.KANDPALDRR. K. SrNGH(Alternate)

SHRIJ. K. VADODARIASruuV.K. SHARMA(Alternate)

SsrruM. S.TRIPATHISmuR. C. GUFTA(Alternate)

MU R. RANGARAIAN

SmuA.K.MorarmmzStrruUMAKANTA.SHAH(Alternate)

%0 s.S.ANANDSmuA. K. MOKNERJEE(Alternate)

SmuM.C. PwrwALSW JANAKG.NANAVATY(Alterrrde)

SHRIC. BHASRARSHRIRAWKUMAR(Alternate)

Bureau of Iudian Standards

BIS is a statutory institution established under the Bureau ofhdian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification of goodsand attending to connected matters in the country.

Copyright

BIS has the copyright of all its publications. No part of these publications may be reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course ofimplementing the standard, of necessary details, such as symbols and sizes, type or grade designations.Enquiries relating tg copyright be addressed to the Director (Publications), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewedperiodically; a standard along with amendments is reaffirmed when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of‘BIS Catalogue’ and ‘Standards: Monthly Additions’.

This Indian Standard has been developed from Doc : No. PCD 12 (1755).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

BUREAU OF INDIAN STANDARDS

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