How Hot Should The Nozzle Be?

processing-temps

Many material manufacturers and suppliers provide processing guides for the materials that they sell. Often, these data sheets are so general as to almost be useless. However, I see a mistake on a great number of processing guides and I think should be corrected. It relates to the nozzle temperature.

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Here’s What Happened Last Week

Long Row of Typewriters

Sumitomo Chemical to expand PP manufacturing in India

Yuk. Teknor Apex makes TPE from recycled chewing gum

New PEEK compounds formulated for the energy industry

Compounder Adell shifts work to other plants following fire at Baltimore plant

Study says that carbon fiber market will reach $28 Billion by 2024

Weekly Resin Report: PE prices may soften

Trinseo debuts 85% long glass fiber PP

Let’s Talk About Significant Figures

huge-blackboard_o_91630

In this post, I want to talk about the proper way to express test results on certificates of analysis. To explain this, I am going to talk about the concept of significant figures (or significant digits). What are significant figures?

According to Wikipedia:

“The significant figures of a number are digits that carry meaning contributing to its measurement resolution.”

Confused? Let me explain.

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Here’s What Happened Last Week

Printing Press 1

Study shows that more recycled PET can be used in hot fill bottles

Modern Dispersions incorporates recycled carbon black from tires into new masterbatch

Egypt’s ETHYDCO opens PE plant

“Smart” coffee cup lid changes color if drink is too hot

Weekly Resin Report: Leanest PE supplies in 2 years

Lanxess to acquire additive manufacturer Chemtura

 

 

ISO 9000 Has Gone Off The Rails

train-wreck

When I first started hearing about the ISO 9000 quality system in the 1990’s there was a lot of resistance to it. A lot companies were unhappy about being pressured or required to adopt the ISO 9000 system by their customers. It was not looked at as being a benefit to their businesses; it was looked at as a giant hoop that you had to jump through in order to be able to get business opportunities from some larger companies. I never agreed with this viewpoint. I saw the benefits of at least some parts of the ISO 9000 standard pretty early on.

Since the 1990’s, the ISO 9000 standard has gone mainstream. Numerous industries have adopted it. No one more vigorously than the auto industry which has their own version which they call TS 16949 (basically ISO 9000 plus some specific auto industry requirements).

However, since then, some cracks have developed that are causing the ISO 9000 system to not only become just a hoop that companies have to jump through, but a series of flaming hoops. Some changes need to be made in order for this system to achieve its goals and actually work for the companies trying to adopt it.

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