1、Designation: F1516 13 (Reapproved 2018)Standard Practice forSealing Seams of Resilient Flooring Products by the HeatWeld Method (when Recommended)1This standard is issued under the fixed designation F1516; the number immediately following the designation indicates the year oforiginal adoption or, in
2、 the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers the instructions and precautions tobe observed to ensure satis
3、factory performance of seams inresilient flooring sealed by the heat weld method.1.2 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety, health, and environmental
4、practices and deter-mine the applicability of regulatory limitations prior to use.See precaution information in 6.1.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment
5、 of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2F141 Terminology Relating to Resilient Floor Coverings3. Terminology3.1 For definitions of terms used in this practice
6、 refer toTerminology F141.4. Significance and Use4.1 Seams in some resilient flooring are heat sealed toprevent openings from forming between cut edges and toprevent penetrations of dirt, liquids, etc., into the seams.Decorative appearances may also be achieved using contrast-ing heat weld thread (r
7、od).5. Instructions5.1 Flooring shall be installed in accordance with themanufacturers instructions.5.2 Particular attention shall be paid to proper cutting ofseams and tightness of cut seams. Specified tightness of seamsto be heat sealed (welded) will vary depending on the flooringproduct and type
8、of tools used to perform the heat weld.5.3 Prior to heat welding, seams shall be routed to a depthspecified by the manufacturer. Routing can be accomplishedwith electric or hand routing tools as specified by the manu-facturer. Follow flooring manufacturers instructions for spe-cific details.5.4 Unle
9、ss specified otherwise by the resilient manufacturer,wait 24 h before routing and heat welding the seams. Thisallows time for the adhesive to set. Heat welding must becompleted before beginning initial flooring maintenance. Sometile products are routed at the factory, and on site routing is notrequi
10、red. Heat welding involves the melting of thread (rod)into the gap of a routed seam. Special electric hot air tools withvariable temperature settings are required. Because tempera-ture settings will vary, depending on the length and wire gaugeof extension cord, room and under floor temperature, floo
11、rcovering material, welding rod composition, etc, test weldingis recommended. Verify the correct thread color, then usingexcess or scrap material, make test welds as needed to establishheat welding conditions. Next, do a trial length seam andevaluate after cooling to determine if the bond strength a
12、ndappearance of the weld thread to the seam edges are satisfac-tory. Weld threads are available in a variety of plain, solidcolors and patterned versions. The color or pattern of the threadcan be selected to either match with the flooring color to hideor disguise the seam or contrast with the floori
13、ng color toaccent the seam.5.5 Approximately one-half of the weld thread thicknesswill adhere to the seam. The excess will be trimmed off flushwith the surface of the flooring when cooled. Trimming ofexcess weld thread is accomplished using a one- or two-stepprocess depending upon product type; one
14、for most rubberproducts and in two steps for vinyl and linoleum products.Welded seams shall be allowed to cool before trimming.Follow manufacturers specific recommendations. Trim knives1This practice is under the jurisdiction of ASTM Committee F06 on ResilientFloor Coverings and is the direct respon
15、sibility of Subcommittee F06.40 onPractices.Current edition approved Jan. 1, 2018. Published January 2018. Originallyapproved in 1994. Last previous edition approved in 2013 as F1516-13. DOI:10.1520/F1516-13R18.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Cust
16、omer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was devel
17、oped in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1and attachments are
18、 available from the flooring manufactureror various flooring installation tool suppliers.5.6 Heating the trimmed seam or use of a topical sealer issometimes utilized to help blend the welded seam gloss andcolor with the flooring material. Refer to manufacturersliterature for applicability and specif
19、ics.5.7 RepairsFollow steps 5.3 to 5.5. After repairing, spotmaintain the seamed area so its appearance compares favorablywith the surrounding flooring as it relates to color, gloss andoverall appearance.6. Precautions6.1 Use caution when handling and using tools required forheat welding seams. Hot
20、air guns can cause severe burns.Routing tools and trim knives are very sharp. Be sure electricextension cords are in good condition and connected to aground fault receptacle.6.2 Heat welding is a function of temperature and speed.Welding too cold will not give good bonding. Welding too hotcan distor
21、t the flooring product surface adjoining the seam line.6.3 The use of welding nozzles/tips designed to restrict heatand direct heat flow to the thread and groove can improve theweld quality and appearance, reducing the scorch or blushingof the factory applied finish adjacent to the seam.7. Keywords7
22、.1 heat weld; installation; resilient sheet flooring; resilienttile; sealingASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validit
23、y of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comment
24、s are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not
25、 received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copi
26、es) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 13 (2018)2
