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1、JIS JAPANESE INDUSTRIAL STANDARD Translated and Published by Japanese Standards Association Plastic films vapour barrier for residential use ICs 81.140.10; 91.120.10 Descriptors : heat exchangers, thermal design of buildings, dew point, damp- Reference number : JIS A 6930 : 1997 (E) proof materials,
2、 plastics, films (state of matter), housing 7 s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:06:16 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS A
3、b930-ENGL 1997 4733b08 0552337 TZL A 6930 :1997 Foreword This translation has been made based on the original Japanese Industrial Standard established by the Minister of International Trade and Industry through deliberations at Japanese Industrial Standards Committee in accordance with the Industria
4、l Standardization Law: Date of Establishment: 1997-12-20 Date of Public Notice in Official Gazette: 1997-12-22 Investigated by: Japanese Industrial Standards Committee Divisional Council on Architecture JIS A 6930:1997, First English edition published in 1998-11 Translated and published by: Japanese
5、 Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. O JSA 1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any
6、form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale,
7、 03/12/2007 09:06:16 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS A b730-ENGL 1777 = 9733b08 0552138 Yb8 = JAPANESE INDUSTRIAL STANDARD JIS A 6930 : 1997 Plastic films vapour barrier for residential use 1 Scope This Japanese Industrial Standard specifies the plas
8、tic films to be used when the vapour barrier layer is especially constituted in order to prevent the thermal insulated structure from moisture condensation mainly in the case of a residence with thermal insulated structure. Remarks : The units and numerical values given in in this Standard are based
9、 on the traditional units and are appended for informative reference. 2 Normative references The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. For these normative references, only the editions of the year described constitut
10、e the provisions in this Standard, and revised editions and amendments thereafter are not applied. JIS A 1324: 1995 JIS A 6111 : 1996 JIS A 9521 : 1994 JIS K 6783 : 1994 JIS K 7129: 1992 JIS K 7212: 1995 JIS K 8575: 1994 JIS Z 0208 : 1976 JIS Z 8401 : 1961 JIS Z 8703 : 1983 J1S Z 9001 : 1980 Measuri
11、ng method of water vapor permeance for building mate- rials House wrapping sheets Man made mineral wool thermal insulation materials for dwellings Ethylenelvinyl acetate copolymer films for agriculture Testing methods for water vapor transmission rate of plastic film and sheeting (instrument method)
12、 General rules for tests for thermal ageing properties of thermo- plastics in the form of sheet by means of ovens Calcium hydroxide Testing methods for determination of the water vapour trans- mission rate of moisture-proof packaging materials (dish method) Rules for rounding off of numerical values
13、 Standard atmospheric conditions for testing General rules for sampling inspection procedures 3 Type The type of film shall be as follows. 3.1 material shall be in accordance with Table 1. Classification by constitution of material The classification by constitution of Table 1 Classification by cons
14、titution of material Classification Single film Composite film Constitution of material Film composed of a single plastic material such as polyethylene film. Film compounded of a single film with other different single film in quality and/or other plastic material ( different from the film in shape,
15、 Film with a vapour deposit layer of metal, etc. in a part of component layers shall be included. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:06:16 MDTNo reproduction or networking p
16、ermitted without license from IHS -,-,- 2 A 6930 : 1997 Permeability (vapour resistance) m*s*Pa/ng m*h*mmHg/g Note () Knitted and woven cloth of stretched polyethylene tape, non-woven cloth of Polyethylen split fiber and so on are applicable. Applicable test su bclause 7.3 Class A Class B 82x 144 x
17、IO- 170) min. (300) min. 3.2 Classification by permeability (vapour resistance) The classification by perme- ability (vapour resistance) shall be as follows (refer to Table 2). Residual rate of longitudinal elon- gation at break after heat treated (%) Residual rate of longitudinal elon- gation at br
18、eak after alkali-treated (%) _. Durabi I ity Ig n it ion property a) Class A b) Class B 7.5.1 50 min. 7.5.2 80 min. No ignition 7.6 4 Quality The quality of film shall be in accordance with Table 2. Thickness mm Table 2 Quality 0.05 0.10 0.15 0.20 Item Single film Composite film Tolerance of t h ick
19、ness % Single film Tolerance of average thickness % Composite film 2 18 -t 23 -t 10 I13 Strength (holding strength of bonding needle) 15 1.53) min. 15 1.53) min. N kgf) 7.4.2 a) 7.4.2 b) 5 Appearance and the defects likely to impair performance such as fissure, hole, etc. shall not be allowed. For t
20、he appearance of film, the test shall be carried out according to 7.7 6 Dimension 6.1 Thickness The thickness of film and the tolerance shall conform to Table 3 after being tested according to 7.2. , Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employee
21、s/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:06:16 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS A b930-ENGL 2997 = 4733b08 0552240 5Lb D Dimension mm Tolerance mm Dimension m Tolerance m 3 A 6930 : 1997 1 100 2000 2500 2700 3000 No deviation on t
22、he minus side is permitted. Follow the agreement between the parties concerned. No deviation on the minus side is permitted. 6.2 The dimensions and the tolerance of width and length of film shall be in accordance with Table 4. Only when the special dimensions are required, the dimension of width sha
23、ll be in accordance with the agreement between the parties concerned with delivery. Width and length Width Length 7 Test 7.1 General condition of test The general condition of test shall be as follows. 7.1.1 Standard condition in test place The standard condition in test place shall be at 23 O C I 2
24、 O C of temperature and (50k 2) % of relative humidity specified in JIS Z 8703, if not specified particularly. 7.1.2 Sampling method of sample The sampling method of test sample shall be as follows. a) For the test pieces to be used for the tests of thickness, strength (tensile strength and elongati
25、on at break) and durability, cut off approximately 2 m in length of film at longitudinal direction ( 2 ) from the end of rolled film. Take out the total of nine pieces of sample for test piece and three pieces of sample for measurement of thickness, as dividing into the upper, lower and central past
26、s as shown in Fig. 1. Note ( 2 ) The longitudinal direction means the direction of film at forming. b) For the test pieces to be used for the tests of permeability, strength (holding strength of binding needle) and ignition property, cut off approximately 1 m in length of film at longitudinal direct
27、ion from the end of rolled film. 7.1.3 follows. Preparation method of test piece The preparation method of test piece shall be as a) Prepare the test pieces to be used for the tests of tensile strength, elongation at break and durability from the nine pieces of the sample for test piece taken accord
28、ing to 7.1.2 a) as referring to Fig.2. The dimension of test pieces shall be in accordance with Fig. 3. Prepare the test piece to be used for the tests of permeability, holding strength of binding needle, and ignition property from the sample for test piece taken according to 7.1.2 b) as referring t
29、o Fig. 4. The dimensions and the number of test pieces shall be in accordance with Table 5. b) Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:06:16 MDTNo reproduction or networking perm
30、itted without license from IHS -,-,- - STD.JIS A b30-ENGL 1777 m 4933b08 0552LLi1 Li52 4 A 6930 : 1997 7.1.4 Pretreatment of test piece For the test piece, if not specified particularly, after being left for not less than 1 h at the test place under the standard condition the test shall be carried o
31、ut. 7.1.5 Rounding-off of numerical value When the measured value and calculated value are rounded-off, the rounding-off method of numerical values shall be in accordance with JIS Z 8401. 7.1.6 When the tests are carried out by the testing machine or measuring device with the traditional units, the
32、conversion to the values accord- ing to the International System of Units (SI) shall be as follows. Conversion of numerical value 1 kgf=9.80 N 1 Pa=7.50X 10- mmHg Unit : mm c O .- Y 3 M c * s Fig. 1 Sampling method of sample (Sample for the measurement of thickness, and sample for test pieces of ten
33、sile strength, elongation at break and durability test) Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:06:16 MDTNo reproduction or networking permitted without license from IHS -,-,- 5
34、A 6930 : 1997 Unit : mm 250 J Test piece for tensile strength and elongation at break tests (Standard condition) Test piece for tensile strength and elongation at break test (Standard For durability condition) (Heat-treated) Test piece for elongation at break Longitudinal Longitudinal For durability
35、 (Alkali-treated) Longitudinal Fig. 2 Sampling of test piece from sample (Example) (Test piece for tensile strength, elongation at break and durability tests) Distance between bench marks 4 +i Unit : mm Fig. 3 Dimension of test piece (Test piece for tensile strength, elongation at break and durabili
36、ty tests) Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:06:16 MDTNo reproduction or networking permitted without license from IHS -,-,- 6 A 6930 : 1997 Test item Permea bi 1 i ty Longi
37、tudinal Holding strength Strength of bonding needle Ignition property Dimension mm Symbols of 490t dl00 3 A Number (Longitudinal X Traverse) test piece 150X 30 5 B 30X 150 5 B 165 X 165 3 C I 1 8-1 I BI-2 I 0-3 I 8-4 I B-5 I B (spare) B (spare) 1 Fig. 4 Shape of test piece and sampling (Example) (Pe
38、rmeability, holding strength of bonding needle and ignition property) 7.2 Thickness The measurement of thickness and the calculation of tolerance shall be in accordance with the measuring method and calculation method specified in JIS K 6783 with using of three samples for the measurement of thickne
39、ss taken out according to 7.1.2 a). 7.3 Permeability The permeability test shall be in accordance with the cup method specified in JIS A 1324 with using of the cup specified in JIS 2 0208 and with using of the test piece prepared according to 7.1.3 b). The measuring condition shall be in the ambient
40、 condition such as 40 O C kO.5 O C of temperature and (got-2) % of relative humidity. The permeability shall be expressed by vapour resistance and the mean value of three measured values. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001
41、, User=Wing, Bernie Not for Resale, 03/12/2007 09:06:16 MDTNo reproduction or networking permitted without license from IHS -,-,- Remarks : 7.4 Strength 7.4.1 Tensile 7 A 6930 : 1997 When the permeability is measured by the instrumental measuring method specified in JIS K 7129 or the cup method spec
42、ified in JIS Z 0208, the measurement shall be carried out after the correlation with the cup method specified in JIS A 1324 has been sufficiently confirmed. The conversion to vapour resistance from the permeability in the case of measuring at the same condition shall be as follows. R, = 573.6 x Wher
43、e, R, : vapour resistance (m2*s*Pa/ng) P,: Permeability g/(m2*24 h x (1PJ The strength test shall be as follows. strength and elongation at break The test of tensile strength and the calculation of elongation at break shall be in accordance with the test method and calculation method specified in JI
44、S K 6783 with using of the test pieces prepared according to 7.1.3 a). The test speed shall be (100f 10) mm per min or (500k 50) mm per min. 7.4.2 Holding strength of binding needle The test for holding strength of binding needle shall be as follows. For the stretching, the tensile test machine spec
45、ified in JIS K 6783 shall be used. Holding strength of binding needle at 23C of temperature The test for holding strength of binding needle at 23 O C of temperature shall be in accordance with the test method specified in JIS A 6111 with using of the test piece prepared according to 7.1.3 Holding st
46、rength of binding needle at -5 “c of temperature The test for holding strength of binding needle at - 5 O C of temperature shall be as follows. Fix the test piece prepared according to 7.1.3 b) with using of binding needle by the method specified in JIS A 6111, put it in a thermostat controlled at -
47、5 O C of temperature, fix () it to a tensile test machine, keep it for 3 min after the temperature in the thermostat has become - 5 O C k 0.5 O C , and carry out the test according to the test method specified in JIS A 6111. b). Note ( 3 ) Fix test piece at the upper part of clamping chuck and plywo
48、od at the lower part of clamping chuck. 7.5 Durability The durability test shall be as follows. 7.5.1 Residual rate of elongation at break in longitudinal direction after heat-treated The residual rate of elongation at break in longitudinal direction after heat-treated shall be obtained according to the following. a) Heat-treat the test piece in longitudinal direction prepared according to 7.1.3 a) by the method specified in JIS K 7212. The condition of heat treatment shall be at 90 “C k 2 “c of temperature for 34 we