1、Designation: F1516 08F1516 13Standard 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 the case
2、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 to be observed to ensure satisfactory p
3、erformance of seams in resilientflooring sealed by the heat weld method.1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine t
4、he applicability of regulatorylimitations prior to use. See precaution information in 6.1.2. Referenced Documents2.1 ASTM Standards:2F141 Terminology Relating to Resilient Floor Coverings3. Terminology3.1 For definitions of terms used in this practice refer to Terminology F141.4. Significance and Us
5、e4.1 Seams in some resilient flooring are heat sealed to prevent openings from forming between cut edges and to preventpenetrations of dirt, liquids, etc., into the seams. Decorative appearances may also be achieved using contrasting heat weld thread(rod).5. Instructions5.1 Flooring shall be install
6、ed in accordance with the manufacturers instructions.5.2 Particular attention shall be paid to proper cutting of seams and tightness of cut seams. Specified tightness of seams to beheat sealed (welded) will vary depending on the flooring product and type of tools used to perform the heat weld.5.3 Pr
7、ior to heat welding, seams shall be routed to a depth specified by the manufacturer. Routing can be accomplished withelectric or hand routing tools as specified by the manufacturer. Follow flooring manufacturers instructions for specific details.5.4 Unless specified otherwise by the resilient manufa
8、cturer, wait 24 h before routing and heat welding the seams. This allowstime for the adhesive to set. Heat welding must be completed before beginning initial flooring maintenance. Some tile productsare routed at the factory, and on site routing is not required. Heat welding involves the melting of t
9、hread (rod) into the gap of arouted seam. Special electric hot air tools with variable temperature settings are required. Because temperature settings will vary,depending on the length and wire gauge of extension cord, room and under floor temperature, floor covering material, welding rodcomposition
10、, etc, test welding is recommended. Verify the correct thread color, then using excess or scrap material, make test weldsas needed to establish heat welding conditions. Next, do a trial length seam and evaluate after cooling to determine if the bondstrength and appearance of the weld thread to the s
11、eam edges are satisfactory. Weld threads are available in a variety of plain, solidcolors and patterned versions. The color or pattern of the thread can be selected to either match with the flooring color to hide ordisguise the seam or contrast with the flooring color to accent the seam.1 This pract
12、ice is under the jurisdiction of ASTM Committee F06 on Resilient Floor Coverings and is the direct responsibility of Subcommittee F06.40 on Practices.Current edition approved Dec. 1, 2008May 1, 2013. Published January 2009May 2013. Originally approved in 1994. Last previous edition approved in 20032
13、008 asF1516-03.-08. DOI: 10.1520/F1516-08.10.1520/F1516-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.Th
14、is document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editi
15、ons as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15.5 Approximately one-half of the weld thread thic
16、kness will adhere to the seam. The excess will be trimmed off flush with thesurface of the flooring when cooled. Trimming of excess weld thread is accomplished using a one- or two-step process dependingupon product type; one for most rubber products and in two steps for vinyl and linoleum products.
17、Welded seams shall be allowedto cool before trimming. Follow manufacturers specific recommendations. Trim knives and attachments are available from theflooring manufacturer or various flooring installation tool suppliers.5.6 Heating the trimmed seam or use of a topical sealer is sometimes utilized t
18、o help blend the welded seam gloss and colorwith the flooring material. Refer to manufacturers literature for applicability and specifics.5.7 RepairsFollow steps 5.3 to 5.5. When finished repair, make sure After repairing, spot maintain the seamed area is spotmaintained to blend appearance to surrou
19、nding flooring for appearance, color and gloss.so its appearance compares favorably withthe surrounding flooring as it relates to color, gloss and overall appearance.6. Precautions6.1 Use caution when handling and using tools required for heat welding seams. Hot air guns can cause severe burns. Rout
20、ingtools and trim knives are very sharp. Be sure electric extension cords are in good condition and connected to a ground faultreceptacle.6.2 Heat welding is a function of temperature and speed. Welding too cold will not give good bonding. Welding too hot candistort the flooring product surface adjo
21、ining the seam line.6.3 The use of welding nozzles/tips designed to restrict heat and direct heat flow to the thread and groove can improve the weldquality and appearance, reducing the scorch or blushing of the factory applied finish adjacent to the seam.7. Keywords7.1 heat weld; installation; resil
22、ient sheet flooring; resilient tile; 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 validity of any such patent rights, and
23、 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 comments are invited either for revision
24、 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 received a fair hearing you shou
25、ldmake 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 copies) 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 ASTM website (www.astm.org/COPYRIGHT/).F1516 132
