Custom Synthetic Fibers

What Custom Synthetic Fibers does

Custom Synthetic Fibers, LLC (dba CS Fibers) is a privately held plastics manufacturer founded in 2016 that produces recycled polyester staple fiber (RPSF) for industrial customers. Operating from a single 80,000-square-foot facility in Rogersville, Alabama, the company runs two production shifts with approximately 50 employees, currently producing 40 million pounds of fiber per year and designed to scale to 120 million pounds. Its majority owners are Custom Polymers Inc., a plastics re-processor based in Charlotte, NC, and Custom Polymers PET LLC, a post-consumer PET bottle recycler in Athens, AL, providing vertically integrated feedstock supply.

The company sells three product lines: standard Recycled Fibers, custom-spec Custom Fibers (custom blends, loft, colors and finishes with stated fast turnaround), and Green Fibers (PET-based bales produced without harmful emissions). Output is sold directly via B2B field sales — no distributors or intermediaries — targeting five horizontal end markets: automotive (vehicle insulation, components), home furnishings (pillows, comforters, furniture), industrial (air filters, envelopes), apparel, and consumer goods, with healthcare disposables also cited. Pricing is quote-based and not publicly disclosed. CEO Joseph Ku leads the company, with Mike Lee as Plant Manager and David Stern listed as CFO.

The business model is industrial product sales: revenue is generated by manufacturing recycled PET-based staple fiber at scale and selling it per-pound to manufacturers who need sustainable, cost-effective raw material inputs. Go-to-market is direct enterprise field sales supported by facility tours and custom product development rather than through digital or retail channels, and marketing presence is limited to a basic website and industry-trade earned media. The firm is privately funded by a group of individual investors led by the Custom Polymers owners, with approximately $6 million deployed into the facility build-out.

Name

Custom Synthetic Fibers

Legal name

Custom Synthetic Fibers, LLC

Website

https://csfibers.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

101–250 employees

Short description

Custom Synthetic Fibers manufactures recycled polyester staple fiber for industrial buyers in automotive, home furnishings, apparel, healthcare, and consumer goods. The Alabama-based firm operates a single 80,000 square-foot facility producing 40 million pounds annually, expandable to 120 million.

Ownership category

akta.pro rank

Headquarters

HQ city

Rogersville

HQ country

United States

HQ region

North America

Offices1 record

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. Recycled Polyester Staple Fiber Sales: Manufacture and sale of recycled polyester staple fiber to industrial customers. The company produces standard recycled fibers as well as custom blends, colors, and finishes. Revenue is generated through direct product sales to manufacturers in target industries.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Custom Synthetic Fibers manufactures recycled polyester staple fiber (RPSF) from post-consumer PET raw materials at its Rogersville, Alabama facility. The company produces standard recycled fibers, custom fiber blends with tailored loft, colors, and finishes, and PET-based sustainable fiber bales sold to industrial manufacturers in automotive, home furnishings, industrial, apparel, and consumer goods sectors.

Product overview

Custom Synthetic Fibers is a manufacturer of recycled polyester staple fibers (RPSF) for industrial applications. The company offers three product lines: Recycled Fibers (standard eco-friendly fibers), Custom Fibers (tailored blends, loft, colors, and finishes), and Green Fibers (PET-based sustainable fiber bales). The company operates a single manufacturing facility with 40 million pounds annual capacity, expandable to 120 million pounds.

Differentiator

Problem solved

Functional benefit

Products and services

• Recycled Fibers Premium recycled polyester staple fibers produced efficiently and expertly, offering cost-effective and eco-friendly solutions for industrial applications such as automotive components, home furnishings, and consumer goods.
• Custom Fibers Tailored polyester staple fiber products with custom blends, loft, colors, and finishes featuring fast-turnaround and reliable performance, customized to specific customer manufacturing processes.
• Green Fibers Polyester fiber bales produced from polyethylene terephthalate (PET) source material without harmful emissions, providing a sustainable end product for industrial buyers seeking environmentally friendly fiber inputs.

Quantifiable outcome

• 40 million pounds of recycled fiber produced annually
• +1 more outcomes

Named customers4 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

One partnership is on record.

• Shoals Economic Development Authority (SEDA)majorStrategic or Co-development Partner · 13 September 2016SEDA owns the Rogersville Business Park where Custom Synthetic Fibers leases its facility. SEDA provided the speculative building and is pursuing the next speculative building with $550,000 in dedicated funding. SEDA President Forrest Wright and staff facilitated the company's location in the area.

Scale indicators5 records

Recent moves8 records

Expansion highlights6 records

Others

• Custom Polymers Inc. Custom Polymers Inc. is a plastics re-processor in Charlotte, NC, and the majority owner of CSF. It is a closely affiliated upstream supplier and parent relationship rather than a direct competitor, but operates in the same recycled plastics value chain.

Broad incumbents

• Far Eastern New Century: Far Eastern New Century is a major Taiwanese integrated polyester and recycled fiber producer with global scale. It is a broad incumbent comparable to CSF on rPSF and recycled PET staple fiber products, though it serves a much larger international footprint.
• Indorama Ventures: Indorama Ventures is one of the world's largest PET and polyester fiber producers with significant recycled-content operations. It competes broadly with CSF in rPSF and PET-based staple fiber for industrial and apparel applications.
• Reliance Industries (Recron): Reliance Industries produces Recron polyester staple fiber, including recycled variants, at massive scale. It is a broad incumbent whose product overlaps with CSF in polyester staple fiber for apparel, home textiles, and industrial fillings.
• Alpek Polyester: Alpek is a major North American producer of PET and polyester fibers, including recycled grades. It is a broad incumbent whose polyester staple and filament fiber portfolio overlaps with CSF's recycled and custom fiber offerings.

Direct peers

• Stein Fibers: Stein Fibers manufactures synthetic staple fibers including recycled and custom-blend products for nonwoven, bedding, and industrial customers. It directly overlaps with CSF's product portfolio and customer base in home furnishings and industrial segments.
• Leigh Fibers: Leigh Fibers is a long-established U.S. recycler and producer of recycled fibers serving automotive, home furnishings, and industrial markets. It is one of the closest U.S.-based direct peers to CSF in recycled fiber manufacturing.
• Unifi (REPREVE): Unifi is the leading U.S. manufacturer of recycled polyester staple fiber, best known for its REPREVE brand. It is the most direct competitor to Custom Synthetic Fibers in rPSF, serving many of the same automotive, apparel, and home textile end-markets.

Emerging players

• Aquafil (Econyl): Aquafil produces Econyl, a regenerated nylon fiber made from recycled materials. While focused on nylon rather than polyester, it is a directly comparable sustainability-positioned regenerated fiber brand competing for the same eco-conscious apparel and home furnishing customers.
• Bcircular (Bilionis Group): Bcircular is an emerging European player producing recycled polyester staple fiber from textile-to-textile recycling streams. It targets apparel and home textile brands with certified recycled content, directly competing for the same sustainability-driven B2B customers as CSF.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/CSFibers
• LinkedInlinkedin.com/company/custom-synthetic-fibers-llc

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Custom Synthetic Fibers