1、METRICA-A-5913628 OCTOBER 1997SUPERSEDINGPPP-C-1752D(3)1 FEBRUARY 1993COMMERCIAL ITEM DESCRIPTIONCUSHIONING MATERIAL, PACKAGING, CLOSED CELL FOAM PLANKThe General Services Administration has authorized the use of this commercial item description as a replacementfor Class 2 and Class 3 of PPP-C-1752D
2、 by all federal agencies.1. SCOPE1.1 This commercial item description covers closed cell foam plank materials used for cushioning and packagingapplications, including static dissipative and fire retardant grades.1.2 The selection of foam cushioning material is dependent on its application and factor
3、s such as drop height,product weight, thickness and derived dynamic performance while its application depends on environmentalfactors such as temperature, humidity, transportation and storage . Therefore, a variety of classes and gradesreflecting material characteristics are available. Refer to MIL-
4、HDBK-304 for additional information.1.3 This standard does not purport to address the safety problems, if any, associated with its use. It is theresponsibility of the user of this standard to establish appropriate safety and health practices and determine theapplicability of regulatory limitations p
5、rior to use.2. CLASSIFICATION.2.1 Foam planks shall be of the following types, classes, and grades as specified.Class 1 - General purpose polyethylene plank material (unskived).Class 2 - General purpose polypropylene plank material (unskived).Class 3 - General purpose plank material, polymer specifi
6、ed by the Procuring Activity (unskived).Class 4 - Special purpose (skived) sheets, planks, and shapes as specified by theProcuring Activity.FSC 8135Beneficial comments, recommendations, deletions, clarifications, etc. and any other data which may improve thisdocument should be addressed to: AFMC LSO
7、/LOP, 5215 Thurlow St., Wright-Patterson AFB OH 45433-5540.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-591362Grade A - Standard.Grade B - Static dissipative.Grade C - Fire retardant (See 3.5).Grade D - Static dissipative and Fire retardant (S
8、ee 3.5).Type I - 14 Kg Constant Compression Creep, See 3.10Type III - 21 Kg Constant Compression Creep, See 3.10Type IV - 25 Kg Constant Compression Creep, See 3.10Type V - 37 Kg Constant Compression Creep, See 3.103. SALIENT CHARACTERISTICS3.1 Terminology - General definitions for packaging and dis
9、tribution environments are found in TerminologyASTM D 996.3.2 Materials: The foam material supplied under this specification shall be suitable to protect items from hazardsencountered during handling and shipping at temperatures between -54C (-65F) and 70C (158F).3.3 Form - Material shall be furnish
10、ed in the forms specified.3.3.1 Plank Material (Class 1, 2 and 3) - Pieces of material which have a rectangular horizontal cross section anda nominal thickness of more than 13 mm.3.3.2 Special Shapes (Class 4 only ) - Extruded, fabricated, and molded shapes, rounds, die cuts, and all otherpieces of
11、polyethylene foam which meet the dimensional tolerances of 3.9. Die cuts may consist of a single layer orseveral layers of cushioning material laminated together to reach the specified material thickness.3.4 Static Dissipative Material (Grades B and D) - Static dissipative material shall conform to
12、all requirementsfor the specified type (See 5.4.3), while continuing to meet the requirements of 3.2.3.4.1 Electrostatic Decay Time - The average decay time, when tested as specified in 5.4.3.1, shall be less than 2.0seconds3.4.2 Resistivity.3.4.2.1 Surface Conductive Material - Surface resistivity,
13、 when tested as specified in 5.4.3.2, shall not be less than1.0 x 10 5 and not more than 1.0 x 10 14 ohms per square.3.5 Fire-Retardant Material (Grades C and D) - Fire retardant material shall conform to all the requirementsspecified by the Procuring Activity for the specified type and class. (See
14、7.2.1.8)3.6 Dynamic Cushioning Properties (Types I, III, IV, and V) - The dynamic cushioning average points, whentested as specified in 5.6, shall lie entirely between the upper and lower limit curves of the applicable figure(Figures 1, 2, 3, and 4).3.7 Density - The nominal density of the material
15、when tested as specified in 5.4.2 shall be tested and reported.Unless otherwise specified the density will not be used to reject material.Type I - 32 Kg/M (2 PCF ) Nominal Density Cushioning Material.Type III - 64 Kg/M (4 PCF) Nominal Density Cushioning Material.Type IV - 96 Kg/M (6 PCF) Nominal Den
16、sity Cushioning Material.Type V - 144 Kg/M (9 PCF) Nominal Density Cushioning Material.3.8 Color. For visual identification purposes only.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5913633.8.1 Grade A - The color shall be white.3.8.2 Grade B
17、 - The color shall be pink.3.8.3 Grade C - The color shall be light brown.3.8.4 Grade D - The color shall be blue-grey.3.9 Dimensional Tolerances -Unless otherwise specified, the following tolerances apply (5.4.1):CLASS LENGTH (%) WIDTH (%) THICKNESSGENERAL PURPOSE PLANK1, 2, 3 +6, -0 +8, -0 +20 %,
18、-5 %SPECIAL PURPOSE SHEETS, PLANKS, AND SHAPES4 +6, -0 +8, -0 2 mm.3.10 Constant Compression Creep - The average creep shall be not greater than 10 percent of the initial thicknessafter testing for 168 hours as specified in 5.5. Sample size 50mm x 100mm x 100mm. Use the applicable loads asfollows:Ma
19、terial Type Static Load (Kg)I 14III 21IV 25V 374. REGULATORY REQUIREMENTS - NONE5. QUALITY ASSURANCE PROVISIONS.5.1 Contractor Certification . The contractor shall certify and maintain all records in accordance with the contractconditions and applicable Federal Acquisition Requirements (FAR) clauses
20、.5.1.1 First Article Wavier . First article inspection may be waived, by the Air Force Packaging Technology andEngineering Facility (AFPTEF) or the procuring activity, when the procuring activity or contract administrator hasdata or other evidence to indicate that prior successful first article insp
21、ection has been conducted. Only when thefirst article has been waived by the AFPTEF or procuring activity, may the contractor self-certify that the materialwill conform to the requirements of this CID.5.1.2 First Article Inspection . First article inspection shall consist of all tests in this sectio
22、n and shall beperformed by the contractor prior to production. First article inspection shall be performed on sample unitsproduced using materials, equipment, and procedures which will be used in fulfilling the contract. First articleapproval is valid only on the contract on which it is granted , un
23、less extended by the Government to othercontracts. In case of dispute, the procuring activity shall require testing on contractor supplied material performedby either AFPTEF or an independent lab.5.2 Market Acceptability . The following market acceptability criteria are necessary to document the qua
24、lity of theproduct to be provided under this CID.5.2.1 Manufacturer Purchase . The materials manufacturer shall furnish documents that the material being offeredis a commercial product meeting the requirements of this CID. Such proof could be completed delivery ordersfilled for customers within the
25、previous 12 months.5.2.2 Purchase from a distributor . Distributor purchased products must meet the requirements stated above. Onlyone manufacturers product shall be used to fulfill a single purchase order.5.3 Test Conditions and Specimens.Provided by IHSNot for ResaleNo reproduction or networking p
26、ermitted without license from IHS-,-,-A-A-5913645.3.1 Test Conditions - All measurements and tests, other than Static Dissipative Properties (which require 12%relative humidity (RH) conditioning), shall be conducted on specimens conditioned at 23 2 C and 50 5percent RH for at least 16 hours or until
27、 the difference between 2 successive weighings conducted at 1 hourintervals is less than 1 percent of the average weight.5.3.2 Test Specimens - Test specimens shall be taken from the end item whenever possible. If test specimenscannot be prepared from the end item, they shall be prepared from the sa
28、me lot of material used to make the enditem.5.4 Tests - The contractor shall comply with all contractual test compliance and reporting requirements.5.4.1 Dimensions - The dimensions shall be measured and reported in accordance with ASTM D 3575.5.4.2 Density - (See 3.7) The density of the material sh
29、all be determined in accordance with ASTM D 3575, SuffixW, Method A. Report results numerically to the nearest 1.0 Kg/M. Unless otherwise specified the density will notbe used to reject material.5.4.3 Static Dissipative Properties (Grades B and D only).5.4.3.1 Electrostatic Decay Time - The electros
30、tatic decay time shall be determined in accordance with EIAStandard 541, Appendix F. Report results numerically to the nearest 0.1 second.5.4.3.2 Resistivity - The surface resistivity shall be determined in accordance with EIA Standard 541, Section 4.3.Report Results numerically to 3 significant fig
31、ures.5.5 Constant Compression Creep - The creep properties of the cushioning material shall be determined inaccordance with ASTM D3575, suffix BB, using the static load specified in 3.10.5.6 Dynamic Cushioning - Figures 1, 2, 3, and 4 define the dynamic cushioning properties provided by 50 mm ofmate
32、rial. These requirements are intended to ensure procurement of a consistently uniform product of a qualityattainable by most of the industry. Figures 1, 2, 3, and 4 should be considered as quality assurance requirementsonly, not as design criteria. For design purposes, complete cushioning data in th
33、e form of peak acceleration versusstatic stress curves for specific drop heights can be obtained from other sources such as manufacturers data. (See1.2)5.6.1 Test Specimens - Test samples shall be 50 2 mm thick x 150mm x 150mm for Types I, III and IV and 50 2 mm thick x 125mm x 125mm for Type V. Mat
34、erial less than 50 mm thick shall be plied up without the use ofadhesive to produce a total thickness of 50 2 mm. Material more than 50 mm thick shall be cut or planed to auniform thickness of 50 mm. Not less than 5 material samples shall be tested, each at a different static stress. Seeapplicable F
35、igure for recommended test points.5.6.2 Dynamic Cushioning Determination: Dynamic cushioning (See 5.6) shall be determined in accordance withASTM D1596. The impact velocity (based on drop height) shall be 345.75 3.00 cm per second. Record theaverage peak G of drops 2 through 5 to the nearest G as th
36、e average peak G value for the static stress applied.5.6.3 Plot . Plot a best fit dynamic cushioning curve throughout the range covered by the applicable upper andlower limit curves of Figures 1, 2, 3, and 4 using a French curve, drawing spline, or by use of a mathematical curvefitting analysis. Rep
37、ort results as either pass on the basis of all averaged points falling between the upper andlower limits, or fail.6. PACKAGING. Preservation, packaging, and marking shall be as specified in the contract or order .Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
38、om IHS-,-,-A-A-5913657. NOTES.7.1 Metric conversions to English units should be made using international conversion standards. For quickreference use 2.54 cm = 1 in, 16 Kg/M 3 = 1 lb/ft 3 (PCF), 0.07 Kg/cm 2 = 1 lb/in 2 (PSI).7.2 Part Identification Number (PIN). The following part identification nu
39、mbering procedure is for Governmentpurposes and does not constitute a requirement for the contractor.This example describes a part numbering system for CID A-A-59136Example of reference part number:AA59136 - 1 I AClass 1 - General purpose polyethylene plank material (unskived).Class 2 - General purp
40、ose polypropylene plank material (unskived).Class 3 - General purpose plank material, polymer specified by the Procuring Activity (unskived).Class 4 - Special purpose (skived) sheets, planks, and shapes as specified by the Procuring Activity.Type I - 14 Kg Constant Compression Creep, See 3.10Type II
41、I - 21 Kg Constant Compression Creep, See 3.10Type IV - 25 Kg Constant Compression Creep, See 3.10Type V - 37 Kg Constant Compression Creep, See 3.10Grade A - Standard.Grade B - Static dissipative.Grade C - Fire retardant (See 3.5).Grade D - Static dissipative and Fire retardant (See 3.5).Note: Bold
42、 Text refers to the reference part number.7.2.1 Additional Ordering Data - In addition to the part number the purchaser may include the followinginformation in procurement documents:7.2.1.1 Contact Corrosivity (Ref. Fed-Std-101, Method 3005, Cleaning per ASTM D3330)7.2.1.2 Dimensional tolerances for
43、 special purpose sheets, planks, and shapes.7.2.1.3 Special Color (see 3.8)7.2.1.4 Compression Set (Ref. ASTM D3575, Suffix B, Maximum of 25% set typical value)7.2.1.5 Flexibility (Procuring activity must define test)7.2.1.6 Thermal Stability (Ref. ASTM D3575, Suffix S, dimensional change not greate
44、r than 2% typical value)7.2.1.7 Flammable Blowing Agent Content (Procuring activity must define test to determine Lower ExplosiveLimit (LEL), typical value is 50%). (Ref. NIPHLE 97T-002)7.2.1.8 Fire Retardancy (Procuring activity must define test)7.2.1.9 Compressive Strength (Ref. ASTM D3575, Suffix
45、 D) Typical values follow:Material Type Compressive Range - Kg/cm2 x 10 -2 (PSI)I 0.28 - 0.84 (4-12)III 0.85 - 1.4 (13-20)IV 1.41 - 3.5 (21-50)V 3.51 - 7.0 (51-100)7.2.1.10 Water Absorption (Ref. ASTM D3575, Suffix L, 0.1 pound per square foot typical value)7.3 Intended Use - The material covered by
46、 this specification is intended primarily for use in cushioning andpackaging applications satisfying MIL-STD-2073 and ASTM D3951 to protect items from environmental hazardssuch as shock, vibration, concentrated forces, and abrasion during handling and shipping. Grade B materials alsoprotect items fr
47、om the buildup or retention of electrostatic potential. Grade C materials have been treated to retardtheir burning rate. Grade D materials have been treated to satisfy both Grade B and C requirements.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-
48、A-5913667.4 Test Equipment Calibration7.4.1 Test Equipment Calibration for Dynamic Cushioning - The Air Force Packaging Technology andEngineering Facility (AFPTEF), AFMC LSO/LOP, 5215 Thurlow St, Wright-Patterson AFB, Ohio 45433-5540, isresponsible for verifying performance of this test equipment an
49、d maintaining a List of Facilities with CalibratedTesting Equipment for Government use. Manufacturers and suppliers are urged to arrange to have theperformance of their test equipment verified well in advance of any required material conformance testing.Information on this verification/calibration process for Government procurement may be obtained from thisfacility.7.4.2 Other Test Equipment Calibration - All equipment used to perform the test requirements
