Which Plastics Are Plastisol Safe

[CNC Molds N Stuff]

I would assume PVC is probably not plastisol safe since plastisol is a PVC. 

According to Wikipedia

A plastisol is a colloidal dispension of small polymer particles, usually polyvinyl chloride (PVC), in a liquid plasticizer. When heated to around 180 °C (356 °F), the plastic particles absorb the plasticizer, causing them to swell and fuse together forming a viscous gel. Once this is cooled to below 60 °C (140 °F) it becomes a flexible, permanently plasticized solid product.[1] This process is called 'curing'.

The goal is to find workable plastic one could use for plastisol containers and packaging.  The home shop and small business bait maker could benefit from knowing whether or not they could vacuum form trays and covers from one or more of the various easily worked plastics like ABS, polystyrene, PET, PETG, Acrylic, Polycarbonate, or others.   

Vacuum forming is a pretty easy process.  Now I know making packaging in small quantities might be a pain for some, but for others a custom perfectly match package might be just what they are looking for. 

I visited a few plastics manufacturers websites this morning trying to get some insight.  On one their aggressive and intrusive chat popup kept blocking the screen.  "Finally I said, "Fine.  We'll chat." 

Me:  What plastics are plastisol safe?

Them:  I don't know what plastisol is. 

Me:  It's a heat cured PVC resin used in a lot of things like screen printing and of course rubber worms. 

Them:  We don't sell that. 

Me:  That's not what I asked.  I asked what plastics are plastisol safe.  Some are nonreactive and make great packaging and others will melt when turn gooey held against a plastisol product, and some of the early plastic tackle boxes actually melted when in contact.

Then:  You are just going to have to buy samples and experiment. 

Me:  This is not new or esoteric.  Plastisol has been around for at least 50 years.  Its properties are well known to anybody in the industry.  (Starting to get a bit peeved.  I shouldn't.  I know.)  Can I speak to somebody who is actually an expert in plastic manufacturing.

CHAT ENDED

I have to ask.  Why do they even have a chat interface?  If they can't or won't answer questions all the aggressive chat popup does is annoy potential customers.  Do they have a scripted chat service?  What can the chat/script answer? 

I had a discussion years ago with some bait makers, and I seem to recall some saying PETG was good to go, but I could be Remembering that incorrectly. 

So, can you tell me what plastics are plastisol safe? In particular the blend of PVC suspended in plasticizer used for making rubber worms.