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Plastic Product Designs & Plastic Part Prototypes |
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See a slide show of some plastic parts below. We also
have listed some guidelines we use for plastic product design.
Feel free to contact us for more information or a brochure.
We would be happy to discuss and assist you on any of
your plastic product designs. Our
E-mail address is
design3d@velocity.net or go to our
contact page.
SOME GUIDELINES FOR PLASTIC PRODUCT DESIGN A. Part outside and inside corners to be radiused. (sharps only when absolutely necessary or when tooling design requires sharp corners on P/L molding and only when they have a limited affect on part integrity.) B. Drafts will be used. (1 deg. of dft/in. or better) C. Part will have uniform wall thickness when possible. D. Textured parts to have 1 1/2 deg. dft per .001 texture depth. E. Injection moldability will be assumed. F. When wall thickness must change, It will be gradual and the transition will not exceed 20% of nominal wall. G. Holes and cut-outs will be no closer to each other than 2 times the part wall thickness or twice the hole diameter. H. Boss O.D.'s will be 2X the screw major diameter. J. Boss height will be 2.5 times the boss I.D. K. Part name, number and revision level will be in database. L. No duplicate data will be allowed in database unless they are on separate layers and for a revision level. M. All database entities to intersect within .0001" min. N. Database will be separated into levels and colors. P. Any related plastic product design drawings will have correct view placement using standard practices. R. Part will be designed for the environment in which it will operate. S. Part function and operating conditions will be used for the design. Factors such as operating temperature, applied loads, service life, impact, shock, etc. will be considered as required. T. Any existing performance specifications and design requirements for the part , prototype or product will be incorporated, including assembly method, code approvals, tolerances, factor of safety, and finish. |
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WHY HAVE PLASTIC PRODUCT DESIGN GUIDELINES ? A. Improved dimensional stability of the part. B. Reduced cost and increased quality of the part. C. Minimized molded-in stresses and warpage. D. Increased part strength. E. Enhanced part appearance with proper texture and finish. F. Lowered ejection force and better molded part ejection. G. Less plastic material and waste. H. Shorter molding cycles and less molding problems. J. Improved melt flow during molding of part. K. Reduced voids and air traps. L. Less weld-lines in product. M. Designed part for reduced injection mold complexity and side actions. N. Reduction in sink marks in plastic part. P. Allowance for proper tooling considerations such as venting, gating and parting lines. R. Optimized fit using acceptable tolerances and dimensioning allows for lower cost of tooling and molding parts. S. Proper part design can also give added life to the injection mold by reduced cavitation in the metal.
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