This document is available in either paper or pdf format. Iso 13 and astm d1238 have more similarities than differences. Astm d1238 01e1 standard test method for melt flow rates. The organizations headquarters is in west conshohocken, pennsylvania. Astm d638 is very similar to iso 5272, with one key exception being analysis of the nonlinear portion of a materials stressstrain curve. Selecting the right melt flow tester for your applications procedure a iso 1312, astm d1238 widely used for basic quality control, this is a mass. Tmi has currently has three astm d1238 melt flow indexers as well as older models used for the more common method a which it can provide calibration services for. The following table, taken from the dow elvax eva coplolymer resins grade selection guide pdf, lists grades associated with these applications. Ceast melt flow series instron pdf catalogs technical. Product list rdm test equipment assured quality testing.
All bsi british standards available online in electronic and print formats. Iso 13 melt massflow rate and melt volumeflow rate. Some 12,575 astm voluntary consensus standards operate globally. Both standards present tests that measure one point on the viscosity curve under controlled. Elvax eva industrial consumer grades dow corporate. China xnr400b400c touching screen melt flow index testing machine, find details about china melt flow indexer, melt flow index meter from xnr400b400c touching screen melt flow index testing machine beijing united test co. English espanol portugues deutsch francais home plastics properties. The protocol is followed in general except for the specific instructions presented in steps b f of this. In buying these units from third parties be careful that they are either from a major manufacturer or that the company is. A number in parentheses indicates the year of last reapproval.
Tinius olsen testing machine orifice, d2 tool steel orifice. This presentation is designed to be an informative introduction and guide to melt flow test, and to assist with. Standard test methods for flexural properties of unreinforced. Astm d624 is a testing standard for measuring the tear strength of thermoset rubbers, thermoplastic elastomers, and silicones. These superior strength properties, along with excellent drawability, makes this a very versatile packaging film resin. Manufacturers consider these standards technically equivalent, as both detail similar standards for using an extrusion plastometer, which is commonly known as a melt indexer. Films made from exceed 1018ma have outstanding tensile, impact strength and puncture. Melt flow rates of thermoplastics by extrusion plastometer1.
An astm designation number identifies a unique version of an astm standard. Fundamentals of melt flow testing linkedin slideshare. Rheology systems melt flow tester ceast mf50 instron. Astm d1238, table 4 lists generic meltdensity factors for virgin pp and pe.
Both measure the same property, but slight procedural and equipment differences can yield different results. Melt massflow and melt volumeflow rate astm d1238 extrusion rate of a resin through an orifice of defined dimensions at a specified temperature and load. Melt flow rates of thermoplastics by extrusion plastometer1 this standard is issued under the. For annual book of astm standards volume information, refer to the standards document summary page on the astm website. Tinius olsen is proud to introduce the latest addition to its polymer testing line, the mp1200 melt flow testerextrusion plastometer. For materials which have little or no linear region, the variation between astm and iso can be significant. Elvax 210w ethylene vinyl acetate copolymer dow inc. Standard test method for tensile properties of plastics1 this standard is issued under the.
The dimensional stability tests showed satisfactory results. Both melt flow and rheology tests can be very helpful tools for qc monitoring and development of polymers. Astm d1238 01e1 standard test method for melt flow rates of. Standard test method for peel adhesion of pressure. In buying these units from third parties be careful that they are either from a major manufacturer or that the company is accredited to repair them. Even the composite with a higher percentage of wood flour 30% had a flow. These factors will change with additives and processing, so it is more accurate to measure the actual melt density of the specific resin being tested. Last previous edition approved in 2004 as d1238 04c. Method b requires flow rate timer calibrated loads are to total value stamped on weight with correct piston. Rdm test equipment work with material developers, converters and product packagers, who are interested in controlling physical properties of their materials and finished packages. Due to the viscoelastic nature of plastics, these tests are often. This standard describes multiple different types of sample shapes type a, b, c, t, and cp that can be tested in a standard universal testing machine. Astm standard test method for flow rates of thermoplastics by extrusion plastometer d 123888 1. The meltflow test detailed in the astm d1238 and iso 13 standards quickly.
Orifice, d2 tool steel astm d 1238, iso 13standard catalog no. Using tai for keeping time would mean that over the course of the years, noon would get earlier and earlier, until it. Last previous edition approved in 2001 as d 1238 01e1. Standard test method for melt flow rates of thermoplastics. Using tai for keeping time would mean that over the course of the years, noon would get earlier and earlier, until it would eventually occur in the wee hours of the morning. Measuring mass flow rate mfr and other polymer properties. Flow rates can be used to differentiate grades or provide a measure of degradation of a material as a result of molding.
Standard test method for tensile properties of plastics1. Both melt flow and rheology tests can be very helpful tools for. Astm international, formerly known as american society for testing and materials, is an international standards organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, and services. Polyox watersoluble resins melt flow test procedure. Standard test method for melt flow rates of thermoplastics by. Astm d1238 04c standard test method for melt flow rates of thermoplastics by extrusion plastometer superseded see active link, below. Astm d1238 meltflow rates of thermoplastics by extrusion. Melt flow index, melt flow rate, astm d1238, iso 13.
Extrusion rate of a resin through an orifice of defined dimensions at a specified temperature and load. Standard test method for melt flow rates of thermoplastics by extrusion plastometer, iso13. Astm d1238 standard test method for melt flow rates of thermoplastics by extrusion plastometer. Xnr400b400c touching screen melt flow index testing machine. Understanding melt index and astm d1238 request pdf. Selecting the right melt flow tester for your applications procedure a iso 13 12, astm d1238 widely used for basic quality control, this is a mass. It provides a means of measuring flow of a melted material which can be used to differentiate grades as with polyethylene, or. D256 d3159 to find similar documents by classification. Tinius olsen testing machine orifice, d2 tool steel. Active standard astm d1238 developed by subcommittee.
Astm d1238 standard test method for melt flow rates. D1238 10 standard test method for melt flow rates of thermoplastics by extrusion plastometer. Astm d1922 standard test method for propagation tear resistance of plastic film and thin sheeting by pendulum method slys1 elmendorf tearing tester slys1 is based on elmendorf method to measure tearing strength of plastic films, textile, woven and nonwoven materials. Astm d123885 test method for flow rates of thermoplastics. D123810 standard test method for melt flow rates of thermoplastics by extrusion plastometer edition. Determination of the melt massflow rate mfr and melt volumeflow rate mvr of thermoplastics. Purchase your copy of astm d1238 as a pdf download or hard copy directly from the official bsi shop. Astmd1238 standard test method for melt flow rates of. The test protocol above is used for defining all of the equipment used during the test ie. Usually materials that are tested to d624 are also tested according. The standard includes four different test procedures, with procedures a and b common with iso 13.
It is generally used as an alternative to procedure b on samples having melt flow rates greater than 75 g10 min. Standard test method for peel adhesion of pressuresensitive tape. Astm d1238 standard test method for melt flow rates of. Melt flow rate measures the rate of extrusion of thermoplastics through an orifice at a prescribed temperature and load. Pdf standard test method for melt flow rates of thermoplastics. Model mp1200 melt indexers from tinius olsen tinius.
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