What Sigma Plastics Group does

Sigma Plastics Group, founded in 1978 by Alfred Teo and headquartered in Lyndhurst, New Jersey (with corporate offices in Pompano Beach, Florida), is the largest privately held polyethylene film and bag manufacturer in North America. The group operates 40+ wholly-owned manufacturing subsidiaries across the United States, Canada, and Mexico, processing more than 2.0 billion pounds of resin annually into custom films, stretch films, institutional bag products, shrink films, and converter-grade films. Its technology stack spans blown and cast film extrusion (single-layer through 9-layer coextrusion), up to 10-color flexographic printing, lamination, perforation, modified atmosphere packaging, and in-house recycling, supported by quality labs and the proprietary Rite-Gauging stretch-film optimization process anchored at the 12,000 square foot Packworx training and assessment facility in Shelbyville, Kentucky.

The company serves industrial, agricultural, food and beverage, hygienic/medical, retail/consumer, garment/textile, furniture, janitorial, and converter customers through a decentralized model in which each plant operates its own sales and customer-service team while leveraging centralized purchasing, invoicing, and raw material procurement. Sub-brands such as Sigma Stretch Film, ISOFlex Packaging, Mercury Plastics, McNeely Plastics, Filmtech, Tara Plastics, New Excelsior, and Reliance Packaging preserve their regional identities and specializations within the broader group. Certifications (ISO 9001:2015, SQF Level 3, AIB, FDA, ASI, Kosher, Federal GSA) are widely held across plants and serve as a key onboarding gate for food-contact, medical, and government customers.

Revenue is generated almost entirely through direct B2B sales of manufactured polyethylene film and bag products at contract-quoted pricing; Sigma does not publish pricing and operates with no consumer-facing storefronts. The group has no external investors or public ticker, and ownership remains with founder Alfred Teo and family. Recent strategic emphasis has shifted toward circular materials — including the Nova Chemicals Syndigo rPE partnership (March 2026), the Poly Plastic Products PA recycling department, and the Sigma Renew 360 facility — alongside legacy strengths in scale-driven cost competitiveness, geographic proximity to customers, and broad vertical integration from resin to converted bag.

Name

Sigma Plastics Group

Legal name

Sigma Plastics Group (Alpha Industries)

Website

https://sigmaplasticsgroup.com

Company type

Private

Founded year

1978

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Sigma Plastics Group is North America's largest privately held polyethylene film and bag manufacturer, operating 40+ wholly-owned plants across the US, Canada, and Mexico that process over 2.0 billion pounds of resin annually into custom films, stretch films, and institutional bags for industrial, food, agricultural, medical, retail, and converter customers.

Ownership category

akta.pro rank

Product category

Flexible Plastic Packaging Manufacturing

NAICS

Plastics Packaging Film and Sheet (including Laminated) Manufacturing (326112), Plastics Bag and Pouch Manufacturing (326111), Plastics Packaging Materials and Unlaminated Film and Sheet Manufacturing (32611), All Other Plastics Product Manufacturing (326199)

SIC

Unsupported Plastics Film & Sheet (3081), Plastics, Foil & Coated Paper Bags (2673), Plastics Products, Nec (3089)

akta.pro primary industry

Packaging Film Extrusion (Flexible Packaging Films) (IMANACAA)

akta.pro secondary industries

Barrier & Specialty Films (EVOH, PVDC, Metallized, AlOx/SiOx Coated) (IMALABAC), Plastic Films & Laminated Packaging Structures Manufacturing (IMANAEAD), Trash Bags & Bin Liners (CRAJAGAA)

Keywords

• Extruded polyethylene films
• Flexible packaging manufacturer
• Stretch film production
• Co-extrusion films
• Institutional bag products

Headquarters

HQ city

Lyndhurst

HQ country

United States

HQ region

North America

Offices38 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Extruded Polyethylene Film and Bag Sales: Sigma Plastics Group generates revenue primarily through the manufacture and sale of extruded polyethylene films and bags. As North America's largest privately held film manufacturer, the company produces and sells a wide range of flexible packaging products including custom films, stretch films, institutional bags, shrink films, and converted bag products across 40+ manufacturing locations. Revenue is generated through direct B2B sales to industrial, agricultural, food, medical, retail, and converter customers.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

Sigma Plastics Group manufactures and sells custom extruded polyethylene films and bags across North America through more than 40 production facilities, with over 2.0 billion pounds of annual raw material throughput. Its portfolio spans mono-layer and multi-layer co-extruded films (up to 9 layers), stretch films, custom and stock institutional bags, shrink films, agricultural films, food-grade films, and converted bag products, sold under multiple wholly-owned subsidiary brands to industrial, agricultural, food, medical, retail, and converter customers.

Product overview

Sigma Plastics Group is North America's largest privately held film manufacturer, offering a comprehensive portfolio of extruded polyethylene film and bag products across three core categories: Custom Films (mono-layer and co-extruded films in customizable sizes, gauges and colors with over 2.0 billion pounds annual capacity), Stretch Films (cast and blown hand/machine films with 3-9 layer capabilities at five manufacturing plants), and Institutional Bag Products (LLDPE/HDPE can liners, bio-hazardous waste bags, garment bags, produce bags, t-shirt bags, and retail bags from 14 dedicated plants with 200 million pound capacity). The company's 40+ subsidiary brands serve diverse markets including agricultural, food/beverage, medical/hygienic, retail/consumer, industrial/commercial, garment/textile, and converter films. Key proprietary offerings include the Rite-Gauging process for optimizing packaging operations and specialized products like Filmtech cast embossed films, mercury plastics modified atmosphere packaging, and McNeely's high-barrier nylon/EVOH films.

Differentiator

Problem solved

Functional benefit

Brands

• Sigma Stretch Film: Manufacturer of cast and blown stretch films for hand and machine applications, with proprietary Rite-Gauging process for packaging optimization.
• Packworx
• Mercury Plastics
• ISOFlex Packaging

Products and services

• Custom Films Mono-layer and co-extruded polyethylene films manufactured to customer-specified sizes, gauges, colors, and resin blends with over 2.0 billion pounds annual capacity across 40+ facilities. Used by industrial, agricultural, food, medical, retail, and converter film customers requiring tailored flexible packaging.
• Stretch Films Cast and blown hand and machine stretch films for load containment applications, produced at five strategically located manufacturing plants with 3, 5, 7, and 9 layer co-extrusion capabilities. Includes agricultural stretch films and specialty stretch films for warehousing and shipping operations.
• Institutional Bag Products LLDPE, HDPE, reprocessed, and bio-hazardous waste can liners, drawstring bags, garment bags, merchandise bags, produce bags, t-shirt bags, header bags, zip-lock, and retail bags produced from 14 dedicated manufacturing plants with 200 million pound annual capacity for janitorial, food service, healthcare, and industrial cleaning customers.
• Filmtech Cast Embossed Films Cast embossed polyethylene and polypropylene film ranging from 0.4 mils to 8 mils, including monolayer and multilayer films with nylon, EVOH, and elastomers for agricultural, automotive, food packaging, industrial, medical, and hygienic product applications.
• Sigma Stretch Film Rite-Gauging Process A proprietary holistic assessment service that evaluates a client's total packaging operations to design an optimal stretch film specification for specific applications, improving packaging process efficiencies and profitability. Available through Sigma Stretch Film and the Packworx Packaging Assessment Lab.

Quantifiable outcome

• Annual production exceeds 2.0 billion lbs of raw material
• +4 more outcomes

Named customers1 record

Segments10 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• Nova ChemicalscoreStrategic or Co-development Partner · 30 March 2026Nova Chemicals announced its first commercial order of Syndigo rPE-IN3 recycled polyethylene, shipped to Sigma Plastics Group in Kentucky. This milestone expands sustainable film applications using circular solutions in flexible packaging. Sigma receives Nova's recycled polyethylene to incorporate into its film products, supporting sustainability goals.

Scale indicators15 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Berry Global Group: One of the largest global plastic packaging manufacturers with significant presence in polyethylene films, bags, and flexible packaging across consumer and industrial end-markets. Directly comparable to Sigma in scope and product mix but operates at much larger, publicly disclosed scale.
• Sealed Air Corporation: Global packaging company with significant flexible film and bag operations including Cryovac food packaging and protective films. Overlapping capabilities in shrink films, MAP, and food-grade polyethylene packaging.
• Amcor plc: Global packaging giant with substantial flexible packaging segment producing films and laminates for food, healthcare, and consumer markets. Comparable in lamination and barrier film capabilities, though Amcor is much larger and more diversified.
• Coveris Holdings: European-headquartered flexible packaging manufacturer with North American operations producing films, bags, and pouches. Overlapping product portfolio in food, retail, and industrial film segments.

Direct peers

• Inteplast Group: Privately held manufacturer of polyethylene films, bags, and engineered plastics with similar breadth across institutional, retail, and industrial packaging. Comparable private, large-scale, multi-plant extruder competing directly in film and bag markets.
• Novolex Holdings: Major North American producer of flexible and rigid packaging including polyethylene bags, food packaging, and specialty films. Direct competitor in retail bags, food service, and institutional liner markets with overlapping customer base.
• Charter Next Generation: Specialty film producer focused on sustainable polyethylene and recycled-content films for food, consumer, and industrial markets. Comparable coextrusion capabilities and similar strategic positioning around circular economy packaging.
• Pliant Corporation: Manufacturer of flexible packaging films and value-added products for food, consumer, and industrial markets. Direct competitor in polyethylene-based films with similar custom coextrusion and converting capabilities.
• Toray Plastics (America): Manufacturer of polyester, polypropylene, and polyethylene films for packaging, industrial, and electronics applications. Comparable in advanced film extrusion technology and barrier film capabilities.

Emerging players

• Glenroy Inc. Privately held converter of flexible packaging films and pouches with coextrusion capabilities serving food, beverage, personal care, and household product markets. Smaller scale than Sigma but directly comparable in coextruded film technology and converting services.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sigma-plastics-group

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries22 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sigma Plastics Group