Quality Specification

Transcription

1 Page 1 of 7 Revision 1 Issue Date: A. Purpose To define the specifications for internal muntins in insulated glass units. B. Scope These specifications apply to IGU s manufactured by Alside, Inc. C. Responsibility It is the responsibility of the Quality Assurance Manger to maintain these specifications and update as necessary. It is the responsibility of the Sales Manager to assure that EST s customers review these specifications when developing new slaes contracts. D. General Specifications 1. Muntins- between-glass Straightness Inspection technique: Muntins are to be inspected visually first. Any muntin that appears to be out of alignment shall then be measured using a tape measure. Two measurements shall be taken for each muntin section that is questionable. Measure from the edge of glass to both ends of the muntin section in question. Straightness of a muntin can be measured between each muntin intersection regardless of whether the muntin is continuous or non-continuous. Measurements shall always be taken beginning at the edge of the glass to the muntin, not from muntin to muntin. The only exception to this is when the glass has a curve section to it. For these curved products, measurements can be made from muntin to munitn. The maximum differences between the two measurements given above shall be:.031 (1/32 ) for grilles 4 inches long / See example 1 for illustration..062 (1/16 ) for grilles greater than 4 inches

2 Page 2 of 7 Revision 1 Issue Date: Each muntin bar has a seam on one edge of the muntin. This seam shall always be oriented down on horizontal muntins. Vertical muntins are allowed to have seam orientation left or right but not mixed (some left, some right) within any IG unit. Standard orientation is to the right when viewing from surface four. Muntin Straightness Note: Always measure from edge of glass to the muntin in question. Length A1 A2 B1 B2 C1 C / /8 5 1/2 5 9/16 Acceptable Unacceptable Acceptable < 1/32 >1/16 < 1/16 EXAMPLE 1

3 Page 3 of 7 Revision 1 Issue Date: Muntin Appearance Criteria - General* * The following chart applies only to imperfections visible at 36 or more. Imperfection Maximum Allowable Dimensions Reference Burrs and Metal Shavings X /64 X 1/16 2 Fold over or Dog Ears X /32 X 1/32 2 Dent (Dia)& Crease(length) /8 n/a Paint Chips & marks/spots /32 n/a Scratches, Hairline, < n/a Scratches, Wide, > /4 n/a Notes: 1. Unpainted end cuts of the muntin are allowable. 3.Contour Muntins - Contour Grid Machine a. Blow-Up of Contour Grid Machine Muntin

4 Page 4 of 7 Revision 1 Issue Date: Contour Grid Machine Criteria Table 2 Imperfections Maximum Allowed Dimensions Reference Burrs, Metal Shavings X /64 X 1/16 2 Fold over or Dog Ears /32 2 Gap/ rib of Intersecting grill /32 3, 6.a Gap/ mitered corner intersection /32 3, 6.a Gap/ Seam Intersections /32 4,5,6.a Figure 2 Figure 3 Muntin Imperfections Muntin Imperfections Acceptable - 1/32 or less Unacceptable - Greater Than 1/32 Figure 4 Figure 5

5 Page 5 of 7 Revision 1 Issue Date: Contour Muntins - Router Machine a. Blow-Up of Router Machine Contour Muntin. Router Machine Contour Muntin Criteria Table 3 Imperfections Maximum Allowed Dimensions Reference Burrs, and Metal Shavings X /64 X 1/61 2 Fold over or Dog Ears X /32 X X 1/32 2 Gap/ seam intersections /32 6.b 5. Gold Slim-Line Muntins Gold Slim-Line Muntin Criteria Table 4 Imperfections Maximum Allowed Dimensions Reference Burrs, and Metal Shavings X /64 X 1/16 2 Gap/ intersection /32 see below

6 Page 6 of 7 Revision 1 Issue a. Blow-Up of Gold Slim-Line Muntin. 6. Grid Intersection Tolerances. a. Contour Grid Machine Acceptable Gap 1/32 or less Unacceptable Gap > 1/32

7 Page 7 of 7 Revision 1 Issue Date: b. Router Machine Contour Muntins. Acceptable Gap 1/32 or less Unacceptable Gap > 1/32 c. Gold Slim-Line Muntins. Acceptable Gap < 1/32 or less Unacceptable Gap > 1/32 CHANGE HISTORY DATE DESCRIPTION OF CHANGE Revision Original Issue Revision Revised per managment review comments DOCUMENT APPROVAL DATE Mark Hutchinson Revision Mark Hutchinson Revision