Developing new techniques in foam manufacturing to meet safety standards
Bush describes at length how Hickory Springs Manufacturing Company addressed increasing concern over the flammability of furniture, and hence foam, in the late 1970s and early 1980s. He explains testing procedures for determining safety and offers an overview of how Hickory Springs experimented with different fire retardants in order to make sure their foam met safety codes and regulations. Emphasizing the company's innovative efforts, Bush boasts that Hickory Springs worked in conjunction with BASF Chemical in order to patent the use of melamine in foam production.
Citing this Excerpt
Oral History Interview with Bobby Wesley Bush, Jr., June 21, 2000. Interview I-0088. Southern Oral History Program Collection (#4007) in the Southern Oral History Program Collection, Southern Historical Collection, Wilson Library, University of North Carolina at Chapel Hill.
Full Text of the Excerpt
- KATHLEEN KEARNS:
-
You mentioned earlier that the company had been working on these things
since the 60s. Can you give me some more information?
- BOBBY BUSH:
-
No, we started pouring foam in the 60s, and there really were not a lot
of regulations at that time. I wasn't there and can't really speak to
where we were with TDI or anything, but it's been known for a lot of
years that that's not something you want to take a bath in. But no, most
of the real regulations started in the 80s. It's when EPA got real
aggressive and started looking at hazardous materials and setting
regulations, and that's been the bulk of it. About the same time that we
started becoming aware that furniture flammability and therefore foam
flammability was an issue that we needed to be dealing with, and that
kind of goes along with the innovation theme as far as what we did. And
there again, Graham was the innovator.
- KATHLEEN KEARNS:
-
On flammability issues?
- BOBBY BUSH:
-
Yes.
- KATHLEEN KEARNS:
-
Now Neil
[Underdown]
told me a little bit about this and told me about some
mattresses in prisons catching fire.
- BOBBY BUSH:
-
Down in Florida, yes.
- KATHLEEN KEARNS:
-
Can you tell me more about that and what led to that being a concern?
- BOBBY BUSH:
-
Well, foam burns. It's been pictured in articles and papers as solid
gasoline, and that fact's been known. In fact I was just doing some
research for another reason. March 27, 1979, Neil wrote a letter to all
our location managers requesting that starting immediately, as soon as
they received the supply, that a safety bulletin be attached to every
delivery ticket, or every group of delivery tickets, one per customer,
that went out, on a daily basis. If we delivered five loads to Broyhill
this week, one a day, they got five safety bulletins. Just trying to
inform our customers that there is an issue with heat and flame, and
they should take caution in their plants and they should warn their
customers. In 1975, the state of California adopted Technical Bulletin
117, which required that foam and fabric and some other products that go
into upholstered furniture meet certain flammability requirements. Well,
we look back at that today as being really a rather easy test to pass.
Back then, I'm sure everybody was pulling their hair out. But there were
quite a few liquid fire retardants that could be added to foam. It
affected slightly the quality of the foam, but it did help it pass those
small-scale tests, a small open-flame test, and later
added-probably about 1980-a smoldering test for
cigarettes.
But it was a step in the right direction, but it really does not make
furniture fireproof, nowhere close to it. I don't know if that's ever
even a possibility, unless you're going to sit on concrete blocks, that
you'd have fireproof furniture. But the idea in California was to make
furniture that was harder to ignite. Of course it's a laboratory test
and there are problems with that because that laboratory does not
reflect real life fire situations, and the foam you're testing and the
fabrics you're testing are pristine. They're perfectly clean, they came
right out of the production line, they're not covered with cat
hair and baby urine and cookie crumbs and
cigarette ashes and everything else. That does affect the performance of
any product.
But anyway, Hickory Springs and the industry complied with that 1975
standard, and things have been rolling along pretty good. In 1980 there
were several fires around Christmas time and several big name fires, big
headline fires. Beverly Hills Supper Club. There was an MGM Grand fire
in the early 80s. And all of a sudden, the furniture industry, and the
foam industry in particular, were singled out. That's where this solid
gasoline deal came from. And Hickory Springs along with probably a
handful of other foam manufacturers-we certainly weren't the
instigator, but we were in the ground-level and founding
work-helped to form an association that at that time was
called Flexible Polyurethane Foam Manufacturers' Association, FPFMA.
It's since been shortened to PFA, Polyurethane Foam Association. But
Hickory Springs was a founding member and we've been active members ever
since. Doug [Sullivan] has served as technical director for a term or
two. I've served as president on two different occasions. Probably of
the twenty years' existence of the association, I've been on the
board-I think I added it up the other day-ten years
of those twenty years, in some capacity. I've served as president twice.
I'm serving as past-president right now, for another two years. But
that's been a real active association. It's been very helpful because
even though we're competitors we have a lot of common causes with
flammability, with environmental issues. Those are our two main issues.
The group formed because of the flammability issues and coming up with a
response and trying to set the record straight in a lot of cases on
these poorly written, poorly researched articles. And then dealing with
governmental bodies from a flammability
standpoint, environmental standpoint. It's been a big help. It's been
very, very beneficial.
But I don't know where I was on the flammability issue. In the early
1980s, Graham started looking at some different ways to make foam fire
retardant. We knew we had these liquid fire retardants that we could
add, but you can only go so far with that. You can only pass that small
open flame test. If somebody wanted a bigger fuel source as ignition,
these foams did not work well and still don't. But Graham started
actually playing-he may have looked at other things, but my
first recollection is he took urea and he put it into the foam, solid
urea, ground it up and put it in the foam. And it actually did quite
well. It did not burn very well, took a lot more heat to get it going,
but it gave the foam kind of a wet hand. It had its own humidity, and
when it got kind of wet and sticky, it smelled like urine a little bit
too, therefore urea.
So somewhere along the line he found out that melamine would do the same
thing without that sticky effect and that process was patented. Actually
we worked in conjunction with BASF Chemical in developing it. We kind of
took tangent routes. They worked with conventional polyols, we worked
with some high molecular weights and [] process polyols and developed
different products, different processes. And we have three or four
patents and they have three or four patents and we now have the rights
to use their patents and we're practicing our melamine process at
several of our locations and making some fire retardant foams. CodeRed
is one of the trade names that we use. That's kind of become the
standard of the industry. It's not the best foam in the world. It's been
around since 1984 although it's in its second generation, but I'm really
surprised that nothing else has come along, and
I think there's work being done now, and I doubt that CodeRed as we know
it will continue to exist for too many more years.