1、This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. MAY 2017 Page 1 of 10 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS G-9005 Former Designation: TMS-9005 TITLE: Prepaint Treatment, Plastic Parts CURRENT REV No.: 1705 DATE: May 2017 WRITTEN/EDITED BY: L. Xu/S. Brailey APPROVED BY: R. Goluch SUPERSEDES: 1406 - June 2014 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This sp
3、ecification may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regulatory limits
4、prior to use. 1.0 APPLICATION This specification covers the prepaint treatment required for open or closed mold fiberglass reinforced thermosetting plastic parts, or thermoplastic parts that are injection molded or thermoformed, which are to be subsequently finish painted in NAVISTAR facilities. Typ
5、ical parts are hood and fender assemblies, headlight panels, radiator grilles, window panel inserts, engine covers, and similar exterior and interior applications. 2.0 SCOPE This specification covers surface appearance and dry film property requirements of the primer, inspection, KCC, quality contro
6、l and source approval, repair of primed surfaces, and handling required for prime painted FRP or thermoplastic parts prior to shipment to the using NAVISTAR plant. Parts receiving heat cured topcoats and parts that specify air dry topcoat finish are covered by this specification. 2.1 Restricted Chem
7、ical Substances Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification. 3.0 REFERENCE DOCUMENTS Unless otherwise specified, the latest issue of all referenced standards shall apply. The following spe
8、cifications, standards, and regulations are referenced herein. Quality System Standard ISO 9001 or TS-16949 NAVISTAR MPAPS G-9012 NAVISTAR Supplier Packing and Shipping Std. D-13 ASTM D3359 NAVISTAR Engineering Design Std A-16 ASTM D3363 CFR Title 29, Part 1910 ASTM D4138 NAVISTAR MPAPS B-50 ASTM D5
9、23 NAVISTAR MPAPS G-5 SAE J400 NAVISTAR MPAPS GT-Paint 4.0 GENERAL REQUIREMENTS This specification is not intended to limit or to specify the exact process and materials to be used in providing plastic parts ready for topcoating in NAVISTAR painting operations. The control of the primer quality and
10、its application shall be the responsibility of the part supplier. All primed parts supplied shall be compatible with the finish painting operations employed by the using NAVISTAR plant. NUMBER: MPAPS G-9005 TITLE: Prepaint Treatment, Plastic Parts REVISION: 1705 This document is restricted and may n
11、ot be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. MAY 2017 Page 2 of 10 4.1 Material/Process Approvals 4.1.1 The primers used by the supplier must be approved by NAVISTA
12、R Materials Engineering to meet the dry film requirements of Table 2 prior to their first use in production. 4.1.2 Primer Grade -521 and Grade -52HS dry film properties are defined in the General Information section (A.1) of this specification as an example of typical values of products that work we
13、ll with NAVISTAR production paint systems. 4.1.3 In addition, parts primed with the materials and application processes/methods to be used by the supplier shall be approved by Materials Engineering and, after approval, no deviation in materials and/or manufacturing processes shall be permitted witho
14、ut written approval by Materials Engineering. 4.1.4 A typical preparation and priming procedure is shown in the General Information Section (A.2). This procedure has provided acceptable parts when used with good substrate and the proper materials. 4.2 In-Mold-Coating Priming of FRP parts which use i
15、n-mold-coating (IMC) as a sealer to seal the part requires special treatment. In cases where coverage of the part with IMC is essentially complete, if needed, the use of spot primer will be satisfactory. In cases where coverage of the part with IMC is less than complete, the use of a 1.0-2.0 mil dry
16、 film primer-sealer (with oven bake after application of the primer-sealer) will be required to seal the substrate. If the incompletely covered area is less than 2 inches in diameter, no priming may be necessary if the area does not show through the topcoat and does not promote surface defects (e.g.
17、, pitting and porosity). Spot priming (and rebake) of these areas is acceptable if there is no show-through of primer boundaries after topcoat. If show-through occurs, the entire part must be primed and oven baked prior to topcoating. 4.3 Surface Quality It is recognized that certain defects, such a
18、s substrate porosity, may not be detectable in a primed part until after topcoating. Isolated instances of porosity, as defined in Table 1, shall not be considered cause for rejection. Chronic cases of porosity requiring significant rework shall be cause for rejection and the responsibility of the v
19、endor to correct. The supplier has the responsibility to provide quality primed parts which will not cause delayed defects after finishing in the using plant. Parts supplied shall be free of dirt, oils, molding flash, sharp edges or other potential contaminants that could cause in-plant rework and n
20、egatively impact overall quality. This will require close cooperation with the paint facility at the using plant and with Materials Engineering. 4.4 Appearance Requirements Specific appearance requirements are given in Table 1. Appearance requirements are specified for the following zones or locatio
21、ns on the vehicle: ZONE DESCRIPTION I. Primary, exterior, glamour surfaces, such as: hood and fender exteriors, including visible edges; grilles, cab fronts, sides, doors, corners, and lower aerodynamic fairings. II. Secondary, exterior, glamour surfaces, such as: cab tops, cab backs (between corner
22、 radii) and upper aerodynamic fairings. Also, primary, interior, low gloss painted surfaces, such as: engine covers and instrument panels. III. Recessed exterior or interior surfaces, such as: door openings, door ends, and painted grab handles. IV. Hidden areas, such as those covered in assembly and
23、 backsides, if primed. 1 Grades 52 and 52HS primers are void paint grades per MPAPS G-5. NUMBER: MPAPS G-9005 TITLE: Prepaint Treatment, Plastic Parts REVISION: 1705 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Stand
24、ards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. MAY 2017 Page 3 of 10 4.4.1 Inspection Conditions Parts shall be inspected for appearance requirements at a distance of 2 feet under a light intensity of 100 foot-candles minimum at the part surface. Samples illustra
25、ting acceptable appearance and unacceptable appearance defects shall be prepared and displayed in the inspection area. 4.5 Primer-Dry Film Requirements Dry film property requirements for the primer are given in Table 2. These requirements apply to each individual coating of the primer where multi-co
26、at primers are used with baking and/or drying between coats. For spot primes, dry film thickness may be less, but no less than 0.5 mils and as close to 1.0 mils as the process will allow. 4.6 Bake Temperatures (For Primers Requiring Oven Bake) Primers shall be oven-cured within the minimum and maxim
27、um schedules for time and temperature prescribed by the primer supplier. However, the substrate temperature shall reach a minimum of 200F in at least one oven. 4.7 Test Procedures Unless otherwise specified, tests shall be run in accordance with the following test procedures (from MPAPS GT-Paint) ex
28、cept the primed part, or sections of the primed part, are to be used in place of test panels. TEST PROCEDURE TEST PROCEDURE Gloss ASTM D523 Intercoat Adhesion GT 5B Hardness ASTM D3363 Humidity* GT 7E Adhesion ASTM D3359 Conductivity GT 18 Xylene Rub GT 14A Gravelometer* SAE J400 the hold down area
29、on each side and the emblem area. Other Parts: Other parts shall be tested in at least two locations which will be covered in assembly 5.2 Frequency of Testing 5.2.1 Until such time as mutually satisfactory statistical evidence demonstrating process capability has been presented, three randomly sele
30、cted parts/components from each lot shall be tested for adhesion per ASTM D3359, Method B. 5.2.2 A lot consists of all similar/like parts produced in a continuous production run in a period of 24 hours or less. 5.3 Retest Provisions If any one test location on a part/component fails to meet the mini
31、mum adhesion requirements, three additional parts/components shall be tested and each location on all three parts must pass or the lot shall be subject to rejection. 6.0 SOURCE APPROVAL AND QUALITY CONTROL 6.1 Supplier Requirements All suppliers to NAVISTAR are required to be registered to ISO 9001
32、Quality System Requirements. NAVISTAR will also accept TS-16949 registration as long as the supplier can also fulfill all AIAG PPAP (Production Part Approval Process) documentation and approval requirements. Suppliers must maintain their certification with an accredited registrar and must furnish co
33、pies of registration certificates to their Corporate Buyer upon request. NUMBER: MPAPS G-9005 TITLE: Prepaint Treatment, Plastic Parts REVISION: 1705 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers
34、are required to assume all patent liability. 2017 by Navistar, Inc. MAY 2017 Page 5 of 10 6.2 Approval Parts supplied against contracts or purchase orders citing this specification shall be equivalent in all respects to those samples which were approved by the purchaser. No changes in formulation or
35、 processing practices are permitted without approval. In the event that changes in material, properties, processing practices, construction, color, or labeling of the product are required, the supplier shall notify Materials Engineering and Purchasing and Supplier Quality of the proposed change(s).
36、Test data indicating conformance to all requirements of this specification, test samples, and new or amended or updated Material Safety Data Sheet(s) (MSDS), in accordance with CFR Title 29, Part 1910 shall be submitted with the request for change. 6.3 Process Control The supplier shall either perfo
37、rm and report results of tests on specific lots of parts produced using ISO 9001 or TS-16949 guidelines, or provide statistical evidence of the lot having been produced in a state of statistical control and with a process capable of providing all required properties. The part supplier and the qualit
38、y control manager of the using NAVISTAR plant may determine testing and reporting requirements on specific products. 7.0 SHIPPING, PACKING AND IDENTIFICATION Parts shall be packaged and shipped in such a manner as to protect the surface finish in transit. Packing and identification will be in accord
39、ance with requirements of NAVISTAR Supplier Packing and Shipping Standard D-13. 8.0 DESIGNATION ON DRAWINGS Example: Prime per MPAPS G-9005. The drawing may utilize the KCC symbol with a note that completed assemblies will comply with requirements of MPAPS G-9005. 9.0 TECHNICAL INFORMATION For furth
40、er information related to the technical content of this specification, contact: Suppliers may purchase controlled copies of this specification by contacting: Materials Engineering and Technology Dept. 10400 W. North Avenue Melrose Park, IL 60160 E-mail: MaterialsEngineeringN IHS Global Inc. 15 Inver
41、ness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com Website: http:/ NUMBER: MPAPS G-9005 TITLE: Prepaint Treatment, Plastic Parts REVISION: 1705 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Te
42、chnical Standards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. MAY 2017 Page 6 of 10 TABLE 1 APPEARANCE REQUIREMENTS REQUIREMENT ZONE I II III IV Orange Peel, min (Test per GT-Paint, 29)* Or ACT comparison test * 4.5 7 4.5 7 3.5 6 - Craters, including porosity, grea
43、ter than 1 mm dia. max. no. per square foot 1 2 2 3 2 Max Per Unit Dirt particles, max. no.* per square foot 3 1.5mm max 4 1.5 mm max. 6 1.5 mm max. unlimited 10 Max per Unit Fine Craters, including porosity, less than 1mm dia., max. no. per square foot 3 3 3 unlimited 2 Max Per Unit Solvent Pop Non
44、e None None acceptable Overspray Discernible by Touch None None None acceptable Sags and Runs, max. no. per square foot None None None Unlimited Scratches Discernible by Touch None None None Acceptable if Substrate Not exposed * Dirt particles may be removed using 320-400 grit sand paper. * Orange P
45、eel test per MPAPS GT-Paint, 29 * Orange Peel comparison Test Panels are available from: Advanced Coatings Technology, PO Box 401, Industrial Dr., Hillsdale MI 49242 NUMBER: MPAPS G-9005 TITLE: Prepaint Treatment, Plastic Parts REVISION: 1705 This document is restricted and may not be sent outside N
46、avistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. MAY 2017 Page 7 of 10 TABLE 2 DRY FILM PROPERTIES* DRY FILM PROPERTY REQUIREMENT* ALL ZONES Hardness, min./max. (a) B/2H Adhesion, % min. (
47、a) 90 Xylene Rub (a) PASS Accelerated Adhesion, % min. 90 Intercoat Adhesion, % min. 90 500 hr. humidity, blisters Adhesion % in. None 90 Conductivity, min. (a) (b) 110 Gravelometer Test Requirement 4B per CEMS GT-Paint, 28 Film thickness, mils, min. (a) (c) (d) 1.0 * Requirements shown apply to eac
48、h individual coating of the primer where multi-coat primers are used with baking and/or drying between coats. (a) Most suitable for acceptance testing. (b) Conductivity requirement applies only to the final primer coating. (c) Max film thickness is 4.0 mils; no more than 2 recoats of prime are permi
49、tted. (d) Target for spot primes: 0.5 mils minimum NUMBER: MPAPS G-9005 TITLE: Prepaint Treatment, Plastic Parts REVISION: 1705 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. MAY 2017
