Sigma Plastics Group
(https://alpha-industries.com) 📸 Data Snapshot: May 29, 2026Count trust words (review, testimonial, rating, verified) against real outbound proof links (Google, Trustpilot, Clutch, G2, Yelp). Lots of trust language with zero verification links is trust theatre. Unlinked logo galleries count against it.
Trust theatre is detected via a review_count of 8 across pages with a proof_links_count of 0, indicating that while satisfaction is claimed, there is no verifiable path to the source of these reviews. The trust_theatre_flag is true for both the homepage and locations page, suggesting a reliance on badges or counts that lack external validation. Furthermore, claims like dramatically increase efficient fulfillment lack linked case studies or white papers to substantiate the efficiency gains promised.
The proof density is top-heavy, relying entirely on the sheer number of locations and raw material volume as a proxy for quality. There are 0 proof links to external certifications such as ISO 9001 or environmental compliance documents, which are expected in the Industrial dictionary. The site lists over 40 distinct companies but offers no individual case studies or success stories for any of them, resulting in a high ratio of vague assertions to verifiable outcomes.
Trust & Proof is read by weighing trust language against real verification. Below is the page-by-page tally of review mentions and external proof links, then the schema markup that may (or may not) declare verifiable ratings and identity proof.
🛡️ Trust Signals — reviews, proof links, trust-theatre check
| Page | Reviews | Proof links |
|---|---|---|
| / (home) | 8 | 0 |
| /sigmaPlastics2/locations/ | 8 | 0 |
🔗 Identity & Technical Layer — schema JSON-LD: declared ratings, reviews & identity proof
Homepage schema
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "WebPage",
"@id": "https://www.sigmaplasticsgroup.com/",
"url": "https://www.sigmaplasticsgroup.com/",
"name": "Home",
"isPartOf": {
"@id": "https://www.sigmaplasticsgroup.com/#website"
},
"datePublished": "2018-11-15T02:00:39+00:00",
"dateModified": "2022-07-07T16:58:23+00:00",
"description": "Sigma Plastics Group of Companies is North America’s largest film manufacturer and producer extruded polyethylene products US-Canada.",
"breadcrumb": {
"@id": "https://www.sigmaplasticsgroup.com/#breadcrumb"
},
"inLanguage": "en-US",
"potentialAction": [
{
"@type": "ReadAction",
"target": [
"https://www.sigmaplasticsgroup.com/"
]
}
]
},
{
"@type": "BreadcrumbList",
"@id": "https://www.sigmaplasticsgroup.com/#breadcrumb",
"itemListElement": [
{
"@type": "ListItem",
"position": 1,
"name": "Home"
}
]
},
{
"@type": "WebSite",
"@id": "https://www.sigmaplasticsgroup.com/#website",
"url": "https://www.sigmaplasticsgroup.com/",
"name": "Sigma Plastics",
"description": "Quality, Innovation, and Expertise in Flexible Packaging",
"potentialAction": [
{
"@type": "SearchAction",
"target": {
"@type": "EntryPoint",
"urlTemplate": "https://www.sigmaplasticsgroup.com/?s={search_term_string}"
},
"query-input": {
"@type": "PropertyValueSpecification",
"valueRequired": true,
"valueName": "search_term_string"
}
}
],
"inLanguage": "en-US"
}
]
}
/sigmaPlastics2/locations/
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "WebPage",
"@id": "https://www.sigmaplasticsgroup.com/locations/",
"url": "https://www.sigmaplasticsgroup.com/locations/",
"name": "Locations",
"isPartOf": {
"@id": "https://www.sigmaplasticsgroup.com/#website"
},
"datePublished": "2018-11-15T02:13:20+00:00",
"dateModified": "2022-07-07T17:14:11+00:00",
"description": "Sigma Plastics Group of Companies includes Aargus, Allied, Beta, Coastal Films, Emballage Performant, Epsilon, Filmtech, IsoFlex Packaging, McNeely, Mercury, New Excelsior, Omega, Performance Packaging, Poly Plastic, Reliance, Republic Bag, Sigma Stretch Film, Southeastern, Tara.",
"breadcrumb": {
"@id": "https://www.sigmaplasticsgroup.com/locations/#breadcrumb"
},
"inLanguage": "en-US",
"potentialAction": [
{
"@type": "ReadAction",
"target": [
"https://www.sigmaplasticsgroup.com/locations/"
]
}
]
},
{
"@type": "BreadcrumbList",
"@id": "https://www.sigmaplasticsgroup.com/locations/#breadcrumb",
"itemListElement": [
{
"@type": "ListItem",
"position": 1,
"name": "Home",
"item": "https://www.sigmaplasticsgroup.com/"
},
{
"@type": "ListItem",
"position": 2,
"name": "Locations"
}
]
},
{
"@type": "WebSite",
"@id": "https://www.sigmaplasticsgroup.com/#website",
"url": "https://www.sigmaplasticsgroup.com/",
"name": "Sigma Plastics",
"description": "Quality, Innovation, and Expertise in Flexible Packaging",
"potentialAction": [
{
"@type": "SearchAction",
"target": {
"@type": "EntryPoint",
"urlTemplate": "https://www.sigmaplasticsgroup.com/?s={search_term_string}"
},
"query-input": {
"@type": "PropertyValueSpecification",
"valueRequired": true,
"valueName": "search_term_string"
}
}
],
"inLanguage": "en-US"
}
]
}
This page presents a snapshot of public data from Sigma Plastics Group, captured on May 29, 2026, to show how machine logic reads Trust & Proof signals into an AI reputation evaluation.
Purpose: This data is presented under “Fair Use” for the purpose of independent signal analysis, allowing readers to see the raw signals behind the reputation score.
Notice to Sigma Plastics Group: This analysis is part of a non-adversarial audit conducted by 1 Euro SEO. The results are intended as professional feedback to help improve any website’s machine-readability and authority signals. The evaluation is free, and any company can request a fresh audit at any time.
Any company can use the insights for free and improve its voice. When a company has updated its content, it can always submit a new audit request, which will be reflected in a new current score.
To all users: You are encouraged to visit the live site at https://alpha-industries.com to view the most current version of its content and see directly what this company is about and what it offers.