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 ConnectorsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTE
2、D 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 new edition of ANSI/UL 181B include the fol
3、lowing changes in requirements: Reference to major Codes that also reference UL 181B Use of double sided tape during Peel Adhesion Tests Description of the airplane cloth used in the Peel Adhesion Test Editorial changes Phase of conditioning at room temperature The requirements are substantially in
4、accordance with Proposal(s) on this subject dated September 7, 2012. 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.
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8、 error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indica
9、ted in the note following the affected item. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. JANUARY 8, 2013 UL 181B tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHE
10、R REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 8, 2013 UL 181B tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 8, 2013 1 UL 181B Standard for Closure Systems for Use With Flexible Air Ducts
11、and Air Connectors First Edition October, 1995 Second Edition May, 2005 Third Edition January 8, 2013 The most recent designation of ANSI/UL 181B as an American National Standard (ANSI) occurred on January 8, 2013. The ANSI approval for a standard does not include the Cover Page, Transmittal Pages,
12、Title Page, or effective date information. This ANSI/UL Standard for Safety consists of the Third Edition. 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 D
13、evelopment System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither 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
14、 of UL. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 181B-2013UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 8, 2013 UL 181B 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUT
15、ION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Glossary .6 3 Components 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
16、 Angle 8 10 Shear Adhesion Test .9 11 Surface Burning Characteristics Test 11 12 Mold 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
17、 Adhesion Test on PVC Coated Fabric 13 19 Freeze/Thaw Test 14 20 Surface Burning 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 F
18、ROM UL INSTRUCTIONS 24 Installation Instructions 16 PART III MECHANICAL FASTENERS 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 Temp
19、erature Test .20 31.1 General .20 31.2 Low Temperature 20 31.3 High temperature .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 DISTRIBU
20、TION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover 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 Ai
21、r Ducts and Air Connectors, UL 181. 1.2 These requirements cover only pressure-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 empl
22、oyed at this location such that it does not disrupt the connection of the mechanical 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
23、-metallic air ducts or air connectors which employ mechanical fasteners (see 2.4). 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 attac
24、hment of the exible non-metallic air duct cores (or air connectors). The mastic 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
25、 These requirements cover only non-metallic mechanical fasteners intended for use 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 p
26、ositive operating pressure shall be limited to 6 inch water column (1.5 kPa). Multiple 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 connector
27、s installed in accordance with the International Mechanical Code (IMC), International 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 In
28、stallation of Warm Air Heating and Air Conditioning Systems, NFPA 90B; and/or other 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 den
29、itions apply. 2.2 AIR DUCT MATERIALS The materials intended for air duct core construction 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, polyethyl
30、ene, polyethylene terephthalate, and chlorinated polyethylene. 2.3 FITTINGS Fittings 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
31、 length. Fittings are intended to incorporate a semi-circular outward bead located 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 connecto
32、rs in accordance with the intent of the requirements of the Standard for Factory- 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,
33、a component of a product covered by this standard shall comply with the requirements 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 s
34、tandard, or b) Is superseded by a requirement in this standard. 3.3 A component 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 int
35、ended for use only under limited conditions, such as certain temperatures not exceeding 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
36、 Measurement 4.1 Values stated without parentheses are the requirement. Values 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 lates
37、t edition of that code or standard. 6 Referenced standards 6.1 Standards referenced 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-Sensi
38、tive Tape ASTM D3654, Standard Test Method for Shear Adhesion of Pressure-Sensitive 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 Prope
39、rties Part 1: General Principles ISO 527-2, Plastics Determination of Tensile Properties 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-SEN
40、SITIVE TAPES CONSTRUCTION 7 Materials 7.1 Pressure-sensitive tape shall have a 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, wit
41、h no individual specimen having a value of less than 15 pounds per inch (2.62 N/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 spe
42、cimen having a value of less than 7.5 pounds per inch (1.31 N/mm) of width, when 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
43、specimens from each of three separate rolls of tape shall be prepared with a laboratory 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 (0.3
44、3 N/mm) of width of tape with no individual specimen having a value of less than 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
45、per inch (0.27 N/mm) of width of tape with no individual specimen having a value 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
46、 Method for Peel Adhesion of Pressure-Sensitive Tape, ASTM D3330, except as modied 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
47、 inch (305 mm) long strips. The tape is to be applied to a stainless steel substrate 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 ste
48、el plate such that no bending is possible during the test. Alternative equivalent 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
49、 REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 10 Shear Adhesion Test 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 conditions 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 150
