1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 181B Closure Systems for Use With Flexible Air Ducts and Air Connectors STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION
2、FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Closure Systems for Use With Flexible Air Ducts and Air Connectors, UL 181B Third Edition, Dated January 8, 2013 Summary of Topics This revision of ANSI/UL 181
3、B is being issued to update the title page to reect reaffirmation of ANSI approval. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. The requirements are substantially in accordance with Proposal(s) on this subject
4、 dated February 3, 2017. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without war
5、ranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data
6、, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the for
7、m of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchas
8、er is storing an electronic Standard on the purchasers computer system. MARCH 21, 2017 UL 181B tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 21, 2017 UL 181B tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTH
9、ER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 8, 2013 (Title Page Reprinted: March 21, 2017) 1 UL 181B Standard for Closure Systems for Use With Flexible Air Ducts and Air Connectors First Edition October, 1995 Second Edition May, 2005 Third Edition January 8, 2013 The most rece
10、nt designation of ANSI/UL 181B as a Reaffirmed American National Standard (ANS) occurred on March 21, 2017. The ANSI approval for a standard does not include the Cover Page, Transmittal Pages, and Title Page. This ANSI/UL Standard for Safety consists of the Third Edition including revisions through
11、March 21, 2017. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at https:/. ULs Standards for Safety are copyrighted by UL. Neithe
12、r a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 181B-2013 (R2017)UL COPYRIGH
13、TED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 21, 2017 UL 181B 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Glossary .6 3 Com
14、ponents .6 4 Units of Measurement .7 5 Undated References 7 6 Referenced standards .7 PART I PRESSURE-SENSITIVE TAPES CONSTRUCTION 7 Materials .8 PERFORMANCE 8 Tensile Strength Test 8 9 Peel Adhesion Test at 180 Degree Angle 8 10 Shear Adhesion Test .9 11 Surface Burning Characteristics Test 11 12 M
15、old Growth and Humidity Test .11 13 Temperature Test .11 MARKING 14 General 12 PART II MASTIC CLOSURE SYSTEMS CONSTRUCTION 15 Materials .12 16 Glossary .12 PERFORMANCE 17 Peel Adhesion Test on Stainless Steel 13 18 Peel Adhesion Test on PVC Coated Fabric .13 19 Freeze/Thaw Test .14 20 Surface Burnin
16、g Characteristics Test 14 21 Mold Growth Test .15 22 Temperature Test .15 MARKING 23 General 16 JANUARY 8, 2013 UL 181B 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INSTRUCTIONS 24 Installation Instructions 16 PART III MECHANICAL FASTENE
17、RS FOR USE WITH FLEXIBLE AIR DUCTS CONSTRUCTION 25 General 17 26 Polymeric Materials 17 27 Sharp Edges 19 PERFORMANCE 28 Installation Test .19 29 Mold Growth and Humidity Test .19 30 Mechanical Strength Tests .20 31 Temperature Test .20 31.1 General .20 31.2 Low Temperature .20 31.3 High temperature
18、 21 32 Smoke and Heat Release Tests 21 33 Pressure Test .22 34 Tension Test 23 35 Leakage Test .23 MARKING 36 General 24 JANUARY 8, 2013 UL 181B 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cov
19、er pressure-sensitive tapes, mastic systems, and non-metallic mechanical fasteners for use as a part of the closure system of factory-made exible air ducts or air connectors complying with the Standard for Factory-Made Air Ducts and Air Connectors, UL 181. 1.2 These requirements cover only pressure-
20、sensitive tapes intended for use at the core to tting attachment and at the outer moisture barrier. When used at the core to tting attachment, a mechanical fastener shall be installed over the tape. The tape shall be employed at this location such that it does not disrupt the connection of the mecha
21、nical fastener. When tape is used at the outer moisture barrier, mechanical fasteners may or may not be employed. 1.3 These requirements cover only mastic systems intended to be used with joints of factory-made exible non-metallic air ducts or air connectors which employ mechanical fasteners (see 2.
22、4). The joints, without mastics, shall comply with the requirements of the Standard for Factory-Made Air Ducts and Air Connectors, UL 181. 1.4 Mastic closure systems are intended for use as an additional seal at the attachment of the exible non-metallic air duct cores (or air connectors). The mastic
23、 shall be installed uniformly around the mating surface of the tting collar (i.e. sleeves, elbows, and the like) and in such a manner that it does not disrupt the connection of the mechanical fastener around the core. 1.5 These requirements cover only non-metallic mechanical fasteners intended for u
24、se at the core to tting attachment and at the outer moisture barrier of factory-made exible non-metallic air ducts or air connectors. When these non-metallic fasteners are used, beaded ttings are required, and a maximum positive operating pressure shall be limited to 6 inch water column (1.5 kPa). M
25、ultiple lengths of fasteners may be joined to achieve longer length. 1.6 Pressure-sensitive tapes, mastic closure systems, and non-metallic mechanical fasteners are intended for use with exible air ducts and air connectors installed in accordance with the International Mechanical Code (IMC), Interna
26、tional Residential Code (IRC), International Energy Conservation Code (IECC), Uniform Mechanical Code (UMC), Standard for the Installation of Air Conditioning and Ventilating Systems, NFPA 90A, and the Standard for the Installation of Warm Air Heating and Air Conditioning Systems, NFPA 90B; and/or o
27、ther Model codes. JANUARY 8, 2013 UL 181B 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2 Glossary 2.1 For the purpose of these requirements, the following denitions apply. 2.2 AIR DUCT MATERIALS The materials intended for air duct core c
28、onstruction are: steel, aluminum, aluminum foil, polyethylene terephthalate, chlorinated polyethylene, and pvc coated fabric. The materials intended for air duct moisture barrier construction are: aluminum foil, polyethylene, polyethylene terephthalate, and chlorinated polyethylene. 2.3 FITTINGS Fit
29、tings are collars, sleeves, elbows, and the like to which exible air ducts are attached. Collars are intended to be a minimum of 2 inches (50.8 mm) in length. Sleeves are intended to be a minimum of 4 inches (101.6 mm) in length. Fittings are intended to incorporate a semi-circular outward bead loca
30、ted on the tting ange or collar portion where the exible air duct or air connector is intended to be attached. 2.4 MECHANICAL FASTENERS Mechanical fasteners are the sole closure means for exible air ducts and air connectors in accordance with the intent of the requirements of the Standard for Factor
31、y- Made Air Ducts and Air Connectors, UL 181. For the purpose of this Standard, mechanical fasteners, by design, do not include other closure systems such as tapes or mastics. 3 Components 3.1 Except as indicated in 3.2, a component of a product covered by this standard shall comply with the require
32、ments for that component. 3.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 3.3 A component
33、 shall be used in accordance with its rating established for the intended conditions of use. 3.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not e
34、xceeding specied limits, and shall be used only under those specic conditions. JANUARY 8, 2013 UL 181B 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Units of Measurement 4.1 Values stated without parentheses are the requirement. Values
35、in parentheses are explanatory or approximate information. 5 Undated References 5.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 6 Referenced standards 6.1 Standards refere
36、nced in these requirements include those specied below. ASTM D3759, Standard Test Method for Breaking Strength and Elongation of Pressure-Sensitive Tape ASTM D3330, Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape ASTM D3654, Standard Test Method for Shear Adhesion of Pressure-Sensi
37、tive Tapes ASTM C794, Standard Test Method for Adhesion-in-Peel of Elastomeric Joint Sealants IEC 60695-11-10, Test Flames 50 W Horizontal and Vertical Flame Test Methods ISO 527-1, Plastics Determination of Tensile Properties Part 1: General Principles ISO 527-2, Plastics Determination of Tensile P
38、roperties Part 2: Test Conditions for Moulding and Extrusion Plastics JANUARY 8, 2013 UL 181B 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PART I PRESSURE-SENSITIVE TAPES CONSTRUCTION 7 Materials 7.1 Pressure-sensitive tape shall have a
39、minimum width of 1-7/8 inch (47.6 mm). PERFORMANCE 8 Tensile Strength Test 8.1 The average tensile strength in the machine direction of each roll of tape shall be not less than 17 pounds per inch (2.97 N/mm) of width, with no individual specimen having a value of less than 15 pounds per inch (2.62 N
40、/mm) of width, when tested in accordance with 8.3. 8.2 The average tensile strength in the cross machine direction of each roll of tape shall be not less than 8 pounds per inch (1.40 N/mm) of width, with no individual specimen having a value of less than 7.5 pounds per inch (1.31 N/mm) of width, whe
41、n tested in accordance with 8.3. 8.3 The tensile strength of the tape is to be determined in accordance with the Standard Test Method for Breaking Strength and Elongation of Pressure-Sensitive Tape, ASTM D3759. 8.4 Three specimens from each of three separate rolls of tape shall be prepared with a la
42、boratory specimen cutter for both machine and cross directions. 9 Peel Adhesion Test at 180 Degree Angle 9.1 The average peel adhesion strength of the pressure-sensitive tape shall be not less than 30 ounces per inch (0.33 N/mm) of width of tape with no individual specimen having a value of less tha
43、n 25 ounces per inch (0.27 N/mm) applied to the specied stainless steel panel, and tested in accordance with 9.3 and 9.4. 9.2 The average peel adhesion strength of pressure sensitive tape shall be not less than 25 ounces per inch (0.27 N/mm) of width of tape with no individual specimen having a valu
44、e of less than 20 ounces per inch (0.22 N/mm) applied to the tapes own backing and tested in accordance with 9.3 and 9.4. 9.3 The peel adhesion strength of the tape is to be determined in accordance with the Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape, ASTM D3330, except as mod
45、ied in 9.4. Tests are to be conducted in accordance with Method A Single-Coated Tapes. 9.4 Three specimens from each of three separate rolls of tape are to be tested. Specimens are to be cut in 1 inch (25.4 mm) wide by 12 inch (305 mm) long strips. The tape is to be applied to a stainless steel subs
46、trate as specied in the Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape, ASTM D3330. The tape is to be applied to its own backing using double-sided tape between the tape substrate and the supporting steel plate such that no bending is possible during the test. Alternative equivale
47、nt means of securing the tape substrate to the support is acceptable. The test load is to be applied immediately after completion of the rolling. JANUARY 8, 2013 UL 181B 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 10 Shear Adhesion Test
48、 10.1 The shear adhesion strength of tape shall be such that the tape is able to maintain the test loads specied in Table 10.1 for 24 hours without evidence of separation or slippage in excess of 1/8 inch (3.18 mm). Table 10.1 Shear adhesion test conditions Dwell conditions a Dwell time b Test condi
49、tions a Test load Test duration N/A N/A 73.4F (23C) 2 pounds (8.9 N) 24 hours 50 percent RH N/A N/A 150F (65.6C) 100 grams (1.0 N) 24 hours 150F (65.6C) 60 days 73.4F (23C) 100 grams (1.0 N) 24 hours 50 percent RH a Dwell conditions and test conditions shall be controlled within 3.6F (2C) and 5 percent RH, where specied. b Dwell time is the time that the test specimen is in contact with the test panel, at dwell conditions, after rolling but prior to the application of t
