iskandar taib wrote:
Judging from the photos of how rubber is made that used to be on the Yinhe website, I can guess at what happened. To make topsheets they use a mold that has two surfaces - a top that is smooth and a bottom with holes (which accomodate the rubber that becomes the pips). The label strip is incorporated into the top or bottom (depending on whether they're making inverted or pips-out topsheets). Each mold (at Yinhe) makes two topsheets attached to each other. The rubber compound is masticated between rollers to mix it up thoroughly with whatever goes into it (including the sulfur which vulcanizes it), and then a rolled sheet of this compound is put between the two halves of the mold and then a stack of molds is put into a heated press (the one at Yinhe used hoses feeding steam into the stack). In the press the compound flows under pressure into all the recesses, this makes the pips and the label strip, and the space between the top and bottom halves of the mold defines the thickness of the basesheet. Obviously, something changed - either the molds were assembled wrong, or they used the wrong tops, or the wrong spacers were used, OR someone decided to change the design of Dr. Evil and ordered the change (achieved by making the change to the molds/spacers/whatever). One wonders how consistent the whole process is when it comes to repeatability, from mold to mold and from production run to production run.
Hmm.. Presports is just down the road. Maybe I should go get a couple sheets of Dr. Evil... Yikes, only one sheet in stock! Oh wait, only one sheet of black but 12 of red available.
Iskandar
Using the wrong mold would mean that they then compounded the problem by either not noticing that their run of Rubber X didn't come out as Rubber X but came out as Dr. Evil or that they noticed and then decided to package it as Dr. Evil anyway. It seems more likely to me that somebody simply mixed up a wrong batch of rubber compound.
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Jay Turberville
http://www.jayandwanda.comHardbat: Nittaku Resist & Dr. Evil