1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULDecember 21, 20071SUBJECT 2507OUTLINE OF INVESTIGATIONFORPROTECTIVE KITCHEN APPAREL OVEN MITTSIssue No. 1December 21, 2007Summary of TopicsThis First Issue of the Outline of Investigation for Pro
2、tective KitchenApparel Oven Mitts, SU 2507, covers oven mitts intended for protectionagainst short exposures to hot surfaces, hot liquids, and flamesencountered in kitchen environments.The UL Foreword is no longer located within the UL Standard. For informationconcerning the use and application of t
3、he requirements contained in thisStandard, the current version of the UL Foreword is located onULStandardsInfoNet at: http:/ 2007 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULDECEMBER 21, 2007SUBJECT 25072No Te
4、xt on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .52 Components .53 Units of Measurement .64 Undated References 6PERFORMANCE5 Test Summary 66 Class 1 Performance Requirements .67 Class 2 Performance Re
5、quirements .7TEST METHODS8 Room Temperature Conditioning 89 Washing and Drying Conditioning .810 Wet Conditioning 811 Thermal Protective Performance (TPP) Test 911.1 Application .911.2 Samples .911.3 Conditioning 911.4 Apparatus 911.5 Procedure 911.6 Report 1011.7 Interpretation 1012 Conductive Heat
6、 Resistance Test .1012.1 Application 1012.2 Samples 1012.3 Conditioning .1112.4 Procedure .1112.5 Report 1212.6 Interpretation 1213 Heat and Thermal Shrinkage Resistance Test 1213.1 Application 1213.2 Samples 1213.3 Conditioning .1213.4 Apparatus .1313.5 Procedure .1313.6 Oven Exposure 1313.7 Report
7、 1413.8 Interpretation 1414 Flame Resistance Test 1414.1 Application 1414.2 Samples 1414.3 Conditioning .1514.4 Apparatus .1514.5 Procedure .1714.6 Report 1814.7 Interpretation 19DECEMBER 21, 2007 SUBJECT 2507 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PE
8、RMISSION FROM UL15 Cleaning Shrinkage Resistance Test 1915.1 Application 1915.2 Samples 1915.3 Conditioning .1915.4 Procedure .1915.5 Report 1915.6 Interpretation 2016 Water and Oil Penetration Resistance Test 2016.1 Application 2016.2 Samples 2016.3 Conditioning .2016.4 Apparatus .2016.5 Procedure
9、.2016.6 Report 2116.7 Interpretation 21MARKING17 General 21REFERENCED DOCUMENTS18 General 21DECEMBER 21, 2007SUBJECT 25074UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements apply to oven mitts, intended f
10、or protection against short exposures to hotsurfaces, hot liquids, and flames in residential kitchen environments.1.2 The products covered may be either Class 1 or Class 2 where:a) Class 1 products are intended to provide limited protection against flame and heat during thehandling of pots, pans, an
11、d racks in a kitchen environment; andb) Class 2 products are intended to provide limited protection against flame, heat, and hotliquids which may be spilled or splattered during the handling of pots, pans, and racks in akitchen environment.1.3 These requirements do not cover all safety issues associ
12、ated with the use of protective kitchenapparel as personal protective equipment.1.4 These requirements do not intend to address any sanitary or food safety issues which may beencountered with the use of these products.2 Components2.1 Except as indicated in 2.2, a component of a product covered by th
13、is Outline of Investigation shallcomply with the requirements for that component.2.2 A component is not required to comply with a specific requirement that:a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this outline, orb) Is supersed
14、ed by a requirement in this outline.2.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.2.4 Specific components are incomplete in construction features or restricted in performance capabilities.Such components are intended for use only under limi
15、ted conditions, such as certain temperatures notexceeding specified limits, and shall be used only under those specific conditions.DECEMBER 21, 2007 SUBJECT 2507 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL3 Units of Measurement3.1 Values
16、 stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.4 Undated References4.1 Any undated reference to a code or standard appearing in the requirements of this outline shall beinterpreted as referring to the latest edition of that code or st
17、andard.PERFORMANCE5 Test Summary5.1 A summary of the performance requirements for Class 1 and Class 2 Kitchen Protective Apparel Oven Mitts are shown in Table 5.1.Table 5.1Summary of performance requirementsTest Section Class 1 Class 2Thermal ProtectivePerformance11 YES YESConductive Heat Resistance
18、 12 YES YESHeat and Thermal ShrinkageResistance13 YES YESFlame Resistance 14 YES YESCleaning ShrinkageResistance15 YES YESWater Penetration Resistance 16 NO YES6 Class 1 Performance Requirements6.1 Class 1 Oven Mitt composites shall be tested for thermal insulation as specified in Section 11,Thermal
19、 Protective Performance (TPP) Test, and shall have an average TPP of not less than 50.0.6.2 Class 1 Oven Mitt composites shall be tested for thermal insulation as specified in Section 12,Conductive Heat Resistance Test, and:a) Shall have a second degree burn time of not less than 10.0 seconds; andb)
20、 Shall have a time to pain of greater than 6.0 seconds.6.3 Class 1 Oven Mitts shall be tested for resistance to heat as specified in Section 13, Heat and ThermalShrinkage Resistance Test, and:a) Shall not melt, separate, drip, crack or ignite; andb) Shall not shrink more than 5 percent in length or
21、width.DECEMBER 21, 2007SUBJECT 25076UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL6.4 Class 1 Oven Mitt composites shall be tested for resistance to flame as specified in Section 14, FlameResistance Test, and:a) Shall not have an average cha
22、r length of greater than 100 mm (4.0 inches);b) Shall not have an after flame time of greater than 2.0 seconds;c) Shall not melt or drip; andd) Shall not have the amount of consumed materials exceed 5 percent.6.5 Class 1 Oven Mitts shall be tested for resistance to shrinkage as specified in Section
23、15, CleaningShrinkage Resistance Test, and shall not shrink more than 5 percent.7 Class 2 Performance Requirements7.1 Class 2 Oven Mitt composites shall be tested for thermal insulation as specified in Section 11,Thermal Protective Performance (TPP) Test, and shall have an average TPP of not less th
24、an 50.0.7.2 Class 2 Oven Mitt composites shall be tested for thermal insulation as specified in Section 12,Conductive Heat Resistance Test, and:a) Shall have a second degree burn time of not less than 10.0 seconds; andb) Shall have a time to pain of greater than 6.0 seconds.7.3 Class 2 Oven Mitts sh
25、all be tested for resistance to heat as specified in Section 13, Heat and ThermalShrinkage Resistance Test, and:a) Shall not melt, separate, drip, crack or ignite; andb) Shall not shrink more than 5 percent in length or width.7.4 Class 2 Oven Mitt composites shall be tested for resistance to flame a
26、s specified in Section 14, FlameResistance Test, and:a) Shall not have an average char length of greater than 100 mm (4.0 inches);b) Shall not have an after flame time of greater than 2.0 seconds;c) Shall not melt or drip; andd) Shall not have the amount of consumed materials exceed 5 percent.7.5 Cl
27、ass 2 Oven Mitts shall be tested for resistance to shrinkage as specified in Section 15, CleaningShrinkage Resistance Test, and shall not shrink more than 5 percent.DECEMBER 21, 2007 SUBJECT 2507 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM
28、UL7.6 Class 2 Oven Mitts shall be tested for resistance to water penetration as specified in Section 16,Water Penetration Resistance Test, and:a) Shall not melt, drip, separate or ignite; andb) Shall show no penetration of the test liquid for 60.0 minutes.TEST METHODS8 Room Temperature Conditioning8
29、.1 Samples shall be conditioned at a temperature of 21 3C (70 5F), and a relative humidity of 65 5percent for at least 24 hours.8.2 Testing shall commence within 5 minutes from removal from conditioning.9 Washing and Drying Conditioning9.1 Samples are to be subjected to five cycles of washing and dr
30、ying in accordance with the procedurespecified in Machine Cycle 1, Wash Temperature V, and Drying Procedure Ai of AATCC 135, DimensionalChanges in Automatic Home Laundering of Woven and Knit Fabrics.9.2 A 1.82 0.1 kg (4.0 0.2 lb) load is to be used.9.3 A laundry bag is not to be used.10 Wet Conditio
31、ning10.1 Samples are to be conditioned by complete immersion in water at a temperature of 21 3C (705F), for 2 minutes.10.2 Samples are to be removed from water, hung in a vertical position with glove pouch opening facingdown for 5 minutes, and laid horizontal with textile blotting paper both under a
32、nd over the specimen undera pressure of 0.035 0.003 kg/cm2(0.50 0.05 psi), for a period of 20 minutes.10.3 Blotting paper shall be in accordance with 7.2 of AATCC 70, Test Method for Water Repellency:Tumble Jar Dynamic Absorption Test.10.4 Sample testing is to commence within 5 minutes after removal
33、 from conditioning.DECEMBER 21, 2007SUBJECT 25078UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL11 Thermal Protective Performance (TPP) Test11.1 Application11.1.1 This test method shall apply to Class 1 and Class 2 Oven Mitts.11.2 Samples11.2
34、.1 For mitt body composites, samples for conditioning are to be in the form of a 200 mm 200 mm(8 inches 8 inches) pouch. The pouch is to be made of two glove body composite swatches. The twocomposite swatches are to be 200 mm 200 mm (8 inches 8 inches) and be constructed to simulate theactual layers
35、 of the glove arranged in proper order. Each of the two composite swatches are to be stitchedon all four sides using the same thread as used in the glove construction. The two composite swatchesare then to be sewn together, inner liner to inner liner, on three sides using the same thread as used int
36、he glove construction.11.2.2 After conditioning, the pouch and stitching are to be cut to form 175 mm 175 mm (7 inches 7inches) specimens for testing. Specimens are not to include seams where multiple layers are involved.Specimens are not to be stitched to hold individual layers together during test
37、ing.11.3 Conditioning11.3.1 Three samples are to be tested after conditioning per Section 8, Room Temperature Conditioning.11.3.2 Three samples are to be tested after conditioning per Section 9, Washing and Drying Conditioning,followed by conditioning per Section 8, Room Temperature Conditioning.11.
38、4 Apparatus11.4.1 The test apparatus specified in ISO 17492, Clothing for Protection Against Heat and Flame Determination of Heat Transmission on Exposure to Both Flame and Radiant Heat, is to be used.11.5 Procedure11.5.1 Thermal protective performance testing is to be performed in accordance with I
39、SO 17492, Clothingfor Protection Against Heat and Flame Determination of Heat Transmission on Exposure to Both Flameand Radiant Heat, with the following modifications:a) An exposure heat flux of 84 2 kW/m2, (2.0 0.05 cal/cm2) is to be used.b) The contact configuration is to be used for testing of al
40、l material samples.c) The thermal threshold index analysis method is to be used with calculations made using theheat flux in calories per square centimeter per second and reported as the TPP rating.DECEMBER 21, 2007 SUBJECT 2507 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDIST
41、RIBUTION WITHOUT PERMISSION FROM UL11.6 Report11.6.1 The individual test TPP rating of each sample is to be recorded and reported.11.6.2 The average TPP rating is to be calculated and reported.11.6.3 Where a TPP rating is greater than 60, then the TPP rating is to be recorded and reported as60.11.7
42、Interpretation11.7.1 Pass or fail determinations shall be based on the average reported TPP rating of all samplestested for each precondition.11.7.2 Where an individual result from any test set varies more than 8 percent from the average result,the results from the test set are to be discarded and a
43、nother set of samples are to be tested.12 Conductive Heat Resistance Test12.1 Application12.1.1 This test method applies to Class 1 and Class 2 Oven Mitts.12.2 Samples12.2.1 Samples are to be representative of the glove body composite construction at the palm of thehand, palm side of the fingers, an
44、d at the back of the hand from the finger crotch to 25 mm (1 inch) beyondthe wrist crease and includes the back of the thumb.12.2.2 Samples for conditioning are to be in the form of a 200 mm 200 mm (8 inches 8 inches) pouch.The pouch is to be made of two glove body composite swatches. The two compos
45、ite swatches are to be200 mm 200 mm (8 inches 8 inches) and is to be constructed to simulate the actual layers of the glove,arranged in proper order. Each of the two composite swatches are to be stitched on all four sides usingthe same thread as used in the glove construction. The two composite swat
46、ches are then to be sewntogether inner liner to inner liner, on three sides using the same thread as used in the glove construction.12.2.3 After the specimens are conditioned, the pouch and necessary stitching are to be cut to form 100mm 150 mm (4 inches 6 inches) specimens for testing.DECEMBER 21,
47、2007SUBJECT 250710UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL12.3 Conditioning12.3.1 Three samples are to be tested after conditioning per Section 8, Room Temperature Conditioning.12.3.2 Three samples are to be tested after conditioning p
48、er Section 9, Washing and Drying Conditioning,followed by conditioning per Section 8, Room Temperature Conditioning.12.3.3 Three samples are to be tested after conditioning per Section 8, Room Temperature Conditioning,followed by conditioning per Section 10, Wet Conditioning.12.3.4 Three samples are
49、 to be tested after conditioning per Section 9, Washing and Drying Conditioning,followed by conditioning per Section 10, Wet Conditioning.12.4 Procedure12.4.1 Samples are to be tested in accordance with ASTM F 1060, Standard Test Method for ThermalProtective Performance of Materials for Protective Clothing for Hot Surface Contact, with the followingmodifications:a) Specimens are to be tested using an exposure temperature of 280C (536F).b) The pressure applied during the test is to
