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  • #16
    Re: plastic thickness - mil/ mm/ gauge

    Each item is different and should be checked. However, Grafix usually does not stock film thinner than .001" (1 mil) and thicker than .020" (20 mil).
    Equivalency Chart
    Mils
    (thousands of an inch) Microns Millimeters
    .001" 24 .0254
    .002" 50 .0508
    .003" 72 .0765
    .004" 96 .1016
    .005" 120 .127
    .007" 168 .1778
    .010" 240 .254
    .015" 360 .381
    .020" 480 .508

    Comment


    • #17
      Re: plastic thickness - mil/ mm/ gauge

      Trying To Convert 16 Mic Thickness To Mil Thicknesss.

      I Have A Trash Liner That Is 16mic? What Is The Mil Thickness?

      Thx Ron

      Comment


      • #18
        Re: plastic thickness - mil/ mm/ gauge

        Originally posted by Unregistered
        Each item is different and should be checked. However, Grafix usually does not stock film thinner than .001" (1 mil) and thicker than .020" (20 mil).
        Equivalency Chart
        Mils
        (thousands of an inch) Microns Millimeters
        .001" 24 .0254
        .002" 50 .0508
        .003" 72 .0765
        .004" 96 .1016
        .005" 120 .127
        .007" 168 .1778
        .010" 240 .254
        .015" 360 .381
        .020" 480 .508
        Sorry, but the micron column is wrong in it's entirety. A micron is an incorrect (deprecated in the SI) word for micrometer, and is one-thousandth of a millimeter. Thus 0.005" is correctly 0.127 mm but 127 µm, NOT 120. Just move decimal three places right.

        1" = 25.4 mm = 25400 µm
        0.001" = 0.0254 mm = 25.4 µm

        Comment


        • #19
          Re: plastic thickness - mil/ mm/ gauge

          Originally posted by ronpluma
          Trying To Convert 16 Mic Thickness To Mil Thicknesss.

          I Have A Trash Liner That Is 16mic? What Is The Mil Thickness?

          Thx Ron
          16 µm * 1 mil/25.4 µm = 0.63 mil

          Mrs. X,
          Your point about mil vs. thou is certainly worth noting. Another example of "two peoples separated by a common language."

          In the US, mil (0.001") is a legal-for-trade unit in describing film thickness, plastic bag thickness, etc. Where dual labelling is required (consumer goods), micrometers (µm) are normally used for the metric declaration.

          Comment


          • #20
            Re: plastic thickness - mil/ mm/ gauge

            1 um, i.e. one micron (sometimes called micrometer) are = 0.001 mm NOT 0.0254mm as published below by the previous author.
            Originally posted by Unregistered
            Plastic gauge is expressed in microns (abreviation um or mym)
            1 um = 0.0254mm.
            If (as in USA) film thickness is 3mil (mm) then this is 3 divided by 0.0254 = 118.11um. As with most extrusion this is generally called 120um given manufacturing tolerance +/- 5%.
            Most accurate gauge is calculated by weight i.e. specific gravity for LDPE is .92.
            However in most cases nominal gauge is more than suitable for general use.
            Yeild can be calculated for say plastic layflat tube (thats 2 thicknesses) by using width (mm) x gauge (um) x factor (LDPE = .00184 & HDPE = .00194) to give weight (kg) for 1000 lin. meters.
            950mm x 80um x .00184 = 139.84kg/1000 mtr.

            Comment


            • #21
              Re: plastic thickness - mil/ mm/ gauge

              The thickness or gauge of plastic bag film is expressed in Mil - A unit of measurement in thousandths of an inch, (i.e., .001 = one thousandth of an inch or 1.0 mil), generally used to designate the thickness of LDPE products; or Mic - Short for micron, one thousandth of a millimeter, generally used to designate the thickness of HDPE products.

              Comment


              • #22
                Re: plastic thickness - mil/ mm/ gauge

                The gauge or thickness of plastic film is expressed in thousands of an inch, said as “mils”. For example, .005" is said “5 mils”.

                One millimeter = .039" or “39 mils” thick.

                Equivalency Chart

                Microns Millimeters
                .001" 24 .0254
                .002" 50 .0508
                .003" 72 .0765
                .004" 96 .1016
                .005" 120 .127
                .007" 168 .1778
                .010" 240 .254
                .015" 360 .381
                .020" 480 .508

                Comment


                • #23
                  Re: plastic thickness - mil/ mm/ gauge

                  Originally posted by Unregistered
                  The gauge or thickness of plastic film is expressed in thousands of an inch, said as “mils”. For example, .005" is said “5 mils”.

                  One millimeter = .039" or “39 mils” thick.

                  Equivalency Chart

                  Microns Millimeters
                  .001" 24 .0254
                  .002" 50 .0508
                  .003" 72 .0765
                  .004" 96 .1016
                  .005" 120 .127
                  .007" 168 .1778
                  .010" 240 .254
                  .015" 360 .381
                  .020" 480 .508
                  Micron is an obsolete and deprecated term for micrometer (micrometre). I agree that 0.001" = 0.0254 mm, but 1 mm = 1000 µm, therefore
                  0.001" = 0.0254 mm = 25.4 µm, not 24. The entire "micron" column is wrong and should be 1000 times the mm column.

                  Comment


                  • #24
                    Re: plastic thickness - mil/ mm/ gauge

                    please inform the gauge of 6mil.

                    Comment


                    • #25
                      Re: plastic thickness - mil/ mm/ gauge

                      I am amazed with all the comments that have been posted that there is not one conversion from gauge to mil. Is 20 gauge the same as 20 mil? Someone said they are the same, but I was sure mil was thicker than gauge. Any ideas?

                      Comment


                      • #26
                        Re: plastic thickness - mil/ mm/ gauge

                        plz convert 250 gauge into mm
                        175 gauge,100 gauge.

                        Comment


                        • #27
                          Re: plastic thickness - mil/ mm/ gauge

                          Right on!
                          Wouldn't you think someone would know enough to enter an equation showing relation of gauge, inches, millimeters ... It seems there is much confusion and it's not only with us.

                          Originally posted by Unregistered View Post
                          I am amazed with all the comments that have been posted that there is not one conversion from gauge to mil. Is 20 gauge the same as 20 mil? Someone said they are the same, but I was sure mil was thicker than gauge. Any ideas?

                          Comment


                          • #28
                            Re: plastic thickness - mil/ mm/ gauge

                            Originally posted by Unregistered View Post
                            Right on!
                            Wouldn't you think someone would know enough to enter an equation showing relation of gauge, inches, millimeters ... It seems there is much confusion and it's not only with us.
                            Uhh, did you read post #3?

                            Comment


                            • #29
                              Re: plastic thickness - mil/ mm/ gauge

                              To Convert: Gauge to Inches - Multiply By - 1.0 x 10-5

                              To Convert: Gauge to Microns - Multiply By - 0.254

                              To Convert: Gauge to Mils - Multiply By - 0.01

                              Hope this helps!
                              - Lance

                              Comment


                              • #30
                                Re: plastic thickness - mil/ mm/ gauge

                                We should remember this fomula;

                                1 mil = 1/1000 inch = 25.4 micron = 100 gauge

                                and this is enough to remember.

                                Comment

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