1、Designation: D 5570 94 (Reapproved 2005)Standard Test Method forWater Resistance of Tape and Adhesives Used as BoxClosure1This standard is issued under the fixed designation D 5570; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, t
2、he year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers a procedure to determine thewater resistance of an adhesive or tape as measured by
3、 theamount of tape or adhesive dissolved or dispersed in water.1.2 The values stated in SI units are to be regarded as thestandard. The inch-pound units given in parentheses are forinformation only.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its u
4、se. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 644 Test Method for Moisture Content of Paper andPaperboard by Oven Dryi
5、ngD 996 Terminology of Packaging and Distribution Environ-mentsD 1974 Practice for the Methods of Closing, Sealing, andReinforcing Fiberboard Boxes3. Terminology3.1 Definitions:3.1.1 General definitions for packaging and distributionenvironments are found in Terminology D 996.3.2 Description of Term
6、 Specific to This Standard:3.2.1 box closurethe means of securing the flaps or coversof a box so that the box will not accidentally open duringnormal shipment, handling, and storage.4. Summary of Test Method4.1 Procedure AThe water resistance of a tape (gummedor pressure sensitive) is measured by im
7、mersing the tape inwater at least 24 h at 23 6 2C (73.4 6 4F) and determiningthe percent of tape that is dissolved or dispersed.4.2 Procedure BThe water resistance of an adhesive ismeasured by coating the adhesive on a paper surface, immers-ing in water at least 24 h at 23 6 2C (73.4 6 4F), anddeter
8、mining the percent of adhesive that is dissolved ordispersed.5. Significance and Use5.1 When a box becomes wet, the performance of the boxand its closure are reduced. It is desirable to have box closuremethods that retain an ability to keep the box closed when wet.Sealing or reinforcing methods some
9、times are useful to im-prove performance of wet boxes and closures. Water resistanceis sometimes a regulatory or contractual requirement.5.2 A test result indicating that a box closure tape oradhesive is soluble or dispersible in water is an indication thatits function will be significantly impaired
10、 when wet. A testresult that does not indicate solubility or dispersibility does notnecessarily ensure that the bonding ability will be satisfactorywhen wet or that the performance of the box closure will besatisfactory when wet. Package performance testing describedin the water resistance section o
11、f Practice D 1974 is useful tofurther investigate the effects of water on package and closurefunctions.6. Apparatus and Materials6.1 Drying Oven, capable of maintaining 105 6 5C (221 69F) and providing adequate air circulation.6.2 Testing Chamber, capable of keeping samples at 23 62C (73.4 6 4F).6.3
12、 Balance, capable of reading the mass of specimens atleast to the nearest milligram.6.4 Container, capable of holding at least 1 L of water.6.5 Stainless Steel Screen, or other means of holding testspecimens under water and allowing for water to circulate totest specimens.1This test method is under
13、the jurisdiction of ASTM Committee D10 onPackaging and is the direct responsibility of Subcommittee D10.27 on Paper andPaperboard Products.Current edition approved April 1, 2005. Published April 2005. Originallyapproved in 1994. Last previous edition approved in 1999 as D 5570 - 94 (1999).2For refer
14、enced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West
15、 Conshohocken, PA 19428-2959, United States.6.6 Water, tap water is usually acceptable. Distilled ordeionized water shall be used for referee purposes.6.7 Dispensing System, as required, when adhesives are tobe tested.6.8 Specimen Marking Device, such as a pencil or a penwith water resistant ink.6.9
16、 Paper or Paperboard, when adhesives are to be tested,which has the ability to remain intact for at least 24 h of waterimmersion. The approximate size shall be 250 3 250 mm(10 3 10 in.).7. Test Specimens7.1 Samples of tape and adhesives shall be representative ofthe items under investigation.NOTE 1W
17、ater resistance is a property that is relatively constant for agiven formulation of tape and adhesive. This type of testing is usuallyconducted only for design qualification or first article of manufacture, noton a periodic or lot-by-lot basis.8. Procedures8.1 Procedure ATape:8.1.1 Obtain three samp
18、les of tape, each with an approxi-mate area of 7500 mm2(12 in.2). Dry each specimen in an ovenat 105 6 5C (221 6 9F) for 2 h. Weigh each specimen to thenearest milligram immediately after removal from the oven;weighing procedures in Practice D 644 are recommended forreferee purposes. Place specimens
19、 in a container with at least 1L of water at 23 6 2C (73.4 6 4F). Hold specimens underwater by a stainless steel screen or by other means that allowcirculation of water to all surfaces of the specimens but will notdisrupt the adhesive surface. Keep specimens under water at 236 2C (73.4 6 4F) for 25
20、6 1 h. Remove from water andrepeat the drying and weighing operations.8.1.2 Calculate the percentage water soluble or dispersiblecomponents as follows:% loss 5 MI2 MF!/MI# 3 100 (1)where:MI= mass of oven-dried tape before water submersion,andMF= mass of oven-dried tape after water submersion.8.1.3 T
21、he test result shall be calculated as the arithmeticmean of the three specimens.8.1.4 InterpretationA maximum acceptable percentageloss may be specified in a contract or specification. It isgenerally accepted that a result of up to 2 % loss of mass couldbe attributed to incidental materials in the t
22、ape and experimen-tal variation. A result of over 2 % loss indicates that functionalcomponents of the tape are removed by water.8.2 Procedure BAdhesives:8.2.1 Mark six paper samples for identification purposes.Pick three of the six samples. Dry each specimen in an oven at105 6 5C (221 6 9F) for 2 h.
23、 Weigh each specimen to thenearest milligram immediately after removal from the oven;weighing procedures in Practice D 644 are recommended forreferee purposes. Place specimens in a container with at least 1L of water at 23 6 2C (73.4 6 4F). Hold specimens underwater by a stainless steel screen or by
24、 other means that allowcirculation of water to all surfaces of the specimens but will notdisrupt the surface. Keep specimens under water at 23 6 2C(73.4 6 4F) for 25 6 1 h. Remove from water and repeat thedrying and weighing operations.8.2.2 Calculate the percentage water soluble or dispersiblecompo
25、nents (SP) in the paper (without adhesive) as follows:SP% 5 MI2 MF!/MI# 3 100 (2)where:MI= mass of oven-dried paper before water submersion,andMF= mass of oven-dried paper after water submersion.Average the results from the three sheets of paper.8.2.3 Oven dry and weigh the other three paper samples
26、 aspreviously described. Apply generous amounts of adhesiveover the paper in a manner similar to that used on a box and inaccordance with manufacturers instructions. Let the adhesiveset on the paper for two hours. Oven dry and weigh thespecimens as previously described; take care not to disrupt thea
27、dhesive. Place specimens under water for 25 6 1haspreviously described. Remove from water and repeat thedrying and weighing operations.8.2.4 Calculate the mass of the adhesive (MA) on each sheetof adhesive coated paper as follows:MA5 MT2 MP(3)where:MT= mass of oven-dried paper with adhesive before w
28、aterimmersion, andMP= mass of oven-dried paper only for the same speci-men.8.2.5 Calculate the gross percentage water soluble or dis-persible components (SG) in the paper and adhesive as follows:SG% 5 MT2 MW!/MA# 3 100 (4)where:MW= mass of oven-dried paper and adhesive after waterimmersion.Average t
29、he three specimens.8.2.6 Correct the gross percentage of loss of the adhesiveand paper (SG) by subtracting the percentage lost by the paper(SP). This net test result is the percent of water soluble ordispersible components in the adhesive.8.2.7 InterpretationA maximum acceptable percentageloss may b
30、e specified in a contract or specification. It isgenerally accepted that a result of up to 2 % loss of mass couldbe attributed to incidental materials in the adhesive andexperimental variation. A result of over 2 % loss indicates thatfunctional components of the adhesive are removed by water.9. Repo
31、rt9.1 Report the following information:9.1.1 Statement that this test method was used, indicatingany deviations from the method,9.1.2 Complete identification of the tape or adhesive thatwas tested,9.1.3 Anomalous behavior during the test, and9.1.4 The percent of tape or adhesive dissolved or dispers
32、edin water as determined by this test.D 5570 94 (2005)210. Precision and Bias10.1 No statement is made about either precision or bias ofthis test method since the result merely indicates whether thereis conformance to the criteria for success specified in theprocedure.11. Keywords11.1 adhesive; box
33、closure; tape; water resistanceASTM 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 the riskof i
34、nfringement 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 of this sta
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36、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).D 5570 94 (2005)3
