The Market Data Book is the top 100 from each ranking we do throughout the year, complete with related updates since their publication dates. This year we've switched up our listings to move most of the company directories to our website.

A roundup of new hires and promotions in the plastics industry.

Our ongoing effort to collect more in-depth data on materials is, wait for it … ongoing and the participation award goes to the 57 firms who have provided volume figures since we've been asking All things being equal, these totals were up 4.5 percent over last year.

This week Plastics News publishes its annual ranking of North American blow molders. Here is a peek behind the data in this year's ranking.

This year, we're working to get a bigger handle on just how many women out there are running businesses.

A roundup of new hires and promotions in the plastics industry.

A roundup of new hires and promotions in the plastics industry.

In this week's issue, the top 100 mold makers are featured, with the full list of 139 online, totaling $2.8 billion in related sales. That's up 7 percent over last year's report.

To date, our annual ranking of North American pipe, profile and tubing extruders has listed 362 unique firms making top products such as automotive trim, cable, decking, fencing, hoses, lumber, pipe, tubing, vinyl siding and window profiles.

Rotational molders are a specialized and dedicated group of processors. We've maintained an average of 125 companies since this ranking debuted in 1995.

Just one year into publishing, Plastics News tackled the huge project of ranking North American custom injection molders. Some 236 firms were included in that first 1990 research campaign.

To date, we've tracked over $230 billion in North American bottle sales alone. Some 274 unique companies have made the list with $308 billion in related sales.

Did you know our very first recyclers and brokers ranking wasn't a ranking at all

In 1991, the first time we ranked film and sheet makers in North America, the top company was Armin Corp. of Jersey City, N.J., at $250 million in sales. That amount would put it at No. 31 in 2019.