AI Visibility Index: Plastic Extrusion & Thermoforming in Connecticut

When a buyer asks an AI assistant for a plastic extrusion & thermoforming supplier in Connecticut, these are the companies that get named. This is what we found when the cell was last measured.

70 companies tracked
Last measured September 30, 2026
Next measurement October 30, 2026

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The headline numbers

Never named by AI

57 of 70

companies never appeared in a single buying question

They were asked the same 5 buying questions as everyone else in this cell and were not named once.

13 named at least once
57 never named

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Cell average: 0.81of 15
Across all 70 tracked companies.
Top ten average: 5.3of 15
The ten most visible companies in the cell.

A company's score is how many of the 15 measured answers named it.

The top ten in Connecticut

These are the companies AI assistants named most often when Connecticut buyers went looking for a supplier in this category.

Top 10 most AI-visible Plastic Extrusion & Thermoforming companies in Connecticut, measured September 30, 2026
Rank	Company	Location	AI visibility
1	Form-All Plastics CorporationEvery answer 7 employeesMeriden, Connecticut 2 name variants Form‑All Plastics Corporationmost common13 Form-All Plastics Corp.2	Meriden, Connecticut	15 of 15 answers
2	Impact Plastics 44 employeesPutnam, Connecticut	Putnam, Connecticut	11 of 15 answers
3	Curbell Plastics, Inc. 10 employeesWindsor, Connecticut 3 name variants Curbell Plastics – New Englandmost common6 Curbell Plastics – New England (Windsor, CT)1 Curbell Plastics – Hartford/Windsor1	Windsor, Connecticut	8 of 15 answers
4	Conlet Plastics Inc 7 employeesNew Milford, Connecticut	New Milford, Connecticut	4 of 15 answers
5	Harkness Industries 24 employeesCheshire, Connecticut 2 name variants Harkness Industries, Inc.most common2 Harkness Industries1	Cheshire, Connecticut	3 of 15 answers
6	Modern Plastics 35 employeesShelton, Connecticut	Shelton, Connecticut	3 of 15 answers
7	Plastic Tool Systems Inc. 35 employeesMilford, Connecticut 2 name variants Plastic Tool Systemsmost common2 Plastic Tool Systems, Inc.1	Milford, Connecticut	3 of 15 answers
8	Cowles Products 170 employeesNorth Haven, Connecticut	North Haven, Connecticut	2 of 15 answers
9	Inline Plastics Corporation 190 employeesMilford, Connecticut 2 name variants Inline Plastics Corp.most common1 Inline Plastics, Inc.1	Milford, Connecticut	2 of 15 answers
10	Marlborough Plastics Inc 8 employeesMarlborough, Connecticut	Marlborough, Connecticut	2 of 15 answers

9 more companies were named at least once. Companies outside the top ten are counted in the averages but not named here.

Also named, based in another state

AI assistants named these companies too, but MacRAE'S lists them in a different state, not Connecticut. They belong to that state's ranking, not this one.

Company	State	Mentions
All American Extrusion	New Jersey	4 of 15
Curbell Plastics	New York	2 of 15
Ensinger	Pennsylvania	2 of 15
Laird Plastics – Hartford	Wisconsin	2 of 15
Mantec	Pennsylvania	2 of 15
Advanced Plastic Corp.	Illinois	1 of 15

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The five questions we asked

Every company in this cell is measured on the same questions, written the way a buyer would type them. That is what makes the ranking a comparison rather than a collection of anecdotes.

1“Best plastic extrusion and thermoforming companies in Connecticut”
2“Who supplies custom extruded and thermoformed plastic profiles in Connecticut”
3“I need a Connecticut plastic extrusion and thermoforming partner for a new consumer product housing program, who should I talk to”
4“Top plastic extrusion and thermoforming suppliers in Connecticut for OEM product development buyers”
5“Which Connecticut plastic extrusion and thermoforming companies can handle tight-tolerance co-extruded sheet and deep-draw forming”
6“List 20 plastic extrusion and thermoforming companies in Connecticut with their specialties.”the roster question

Each question is asked more than once, which is why a company's score is out of 15 answers rather than out of the number of questions.

Where AI drew its answers from

These are the sources the answers in this cell leaned on most, ranked by how many of the named companies each one stands behind.

thomasnet.comDirectory
11 companies
impactplastics.co
2 companies
allamericanextrusion.com
2 companies
curbellplastics.com
2 companies
form-all.com
2 companies
industrynet.com
2 companies
lairdplastics.com
2 companies
plastictool.com
2 companies
adamsengineers.com
1 company
advancedplastic.com
1 company
barbourplastics.com
1 company
bettermoldedproducts.com
1 company

33 sources were cited across this cell's answers from 30 domains. A directory page often stands behind several companies at once; a company's own site usually stands behind one.

Connecticut in context

Connecticut ranks 1st of 26 measured states in this category. Each bar is the share of that state's tracked companies that AI assistants named at least once; across every measured state in this category the share is 7%.

Connecticut (this report)Other measured statesCategory average (7%)

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