Mold base to be a minimum hardness of 280 BHN. Again the SPI classifications can give the molder a good idea of the potential lifetime of an injection mold, but not all molds in any one classification are made equally. Modern Mold specializes in close tolerance custom designed plastic injection molds that meet all SPI mold standard classifications to include SPI 101 thru SPI 105 molds.

SPI Class 102 Mold *CYCLES: Under 500,000. Crescent Industries, Inc provides SPI class 101, 102 and 103 molds and Injection molding. Using mold classifications to determine the correct mold type is crucial to achieving quality, production and cost objectives. INTRODUCTION. SPI: Mold Classifications. The SPI mold finish ratings allow you to specify a general mold surface finish. Mold Classification. Detailed mold design recommended. It is our desire through these classifications to help even out inequities in the plastics molding quote system and eliminate customer disappointment. It is our desire, through these classifications, to help eliminate confusion in the mold-quote process and increase customer satisfaction. Mold Classifications SPI Standards Resin Shrink Rate The Society of the Plastics Industry (SPI) sets standards for the plastics industry in the United States. SPI CLASSIFICATION OF INJECTION MOLDS GENERAL NOTES The following classifications are guidelines to be used in obtaining quotations and placing orders for a uniform type of molds. Extremely high volume production injection tools built for lifetime cycles exceeding one million. There are twelve grades of finishes specified by the SPI in four categories that range from shiny to dull. Classifications of Injections Molds Up To 400 Tons. Class 101 : Extremely High Volume. SPI Mold Standards Brief. Typically, a high volume (millions of parts per year), multi-cavity mold with a long product life expectation will be built to the highest classification. A mold builder such as Matrix Tooling Inc. will stand behind and care for every mold the build over its extended lifetime. Molds are a large and taxonomically diverse number of fungal species in which the growth of hyphae results in discoloration and a fuzzy appearance, especially on food.

The following SPI Mold classifications are guidelines to be used for quoting and placing orders on the various classes of plastic injection molds. In order to define standards for injection mold construction and corresponding life expectancy, the Society of the Plastics Industry (SPI), now known as the Plastics Industry Association, has established the following mold classifications - 1) Class 101 - This class of tooling offers the highest quality molds compared to its counterparts. Although we specialize in Class 101, 102, & 103 molds we do still build class 104 & 105 class preproduction molds and prototype molds upon request. Mold Classification Information for SPI Class 101-103 molds from the Society of Plastics Industry Inc "Customs and Practices of the Mold Making Industry".

Molding surfaces should be hardened to at least 48 R/C. Mold Classification Information for SPI Class 101-103 molds from the Society of Plastics Industry Inc "Customs and Practices of the Mold Making Industry". The second chart provides a range of popular material choices in a grid that shows which mold finishes work best for … When you build a mold with Acorn-Gencon Plastics, you will have to make a decision on what mold classification you want us to design your mold to. Medium to high volume production injection tools built for lifetime cycles not to exceed one million. One of the standards regulates the type of polish on molded plastic products. The first chart includes SPI Finish guidelines and their equivalents in roughness average (RA), root mean square (RMS) and VDI 3400 for handy reference. One should always have their molds designed and built by a reputable mold builder. SPI: MOLD CLASSIFICATIONS. The final part quality finish will vary with material and mold quality. Class 102: High Volume. DESCRIPTION: Medium to high production mold, good for abrasive materials and/or parts requiring close tolerances. SPI mold standards, SPI class 101 mold standard, SPI mold specifications The following classifications are guidelines to be used in obtaining quotations and placing orders for uniform types of molds. The following classifications are guidelines to be used in obtaining quotations and placing orders for uniform types of molds. Standard molds are defined by the Plastics Industry Association (formerly known as the Society of Plastics Industry or SPI). Mold Classifications and why you need to know them Just like restaurants, not all molds are the same.