Custom Injection PET Blow Molding for Your Industry

CUSTOM CONSISTENT BLOW MOLDING

When customers come to a custom PET injection blow molding company, they usually want more than “a bottle that holds liquid.” They want predictable sealing, reliable wall weight, clean labeling, and a container that does not change from one production run to the next.

That is exactly what Custom PET Injection Blow Molding is designed to deliver. Using PET injection stretch blow molding (ISBM), we create containers with controlled neck finishes and stable geometry, so the bottle you approve is the bottle you keep receiving.

CUSTOM PET BOTTLES & JARS

We produce custom PET bottles and custom PET jars for products that require clarity, strength, and a professional shelf appearance. If your spec calls for tight neck tolerances, consistent feel, or a specific closure style, we can engineer around it.

Services We Offer

• Custom ISBM bottles for lab, automotive, industrial, and consumer applications
• Custom ISBM jars for packers, cosmetics, dry goods, and specialty programs
• Clear and tinted PET options based on product needs and branding goals
• Shapes designed for dosing, sampling, dispensing, or retail presentation

SHORT RUN OR HIGH VOLUME CUSTOM PET BOTTLE MANUFACTURING

Many PET suppliers are structured around long-term, high-volume programs. Tennessee Bottle is built for the in-between work that still demands precision. We support short-run and specialty production with consistent output, clear communication, and order quantities that make sense for real-world planning.

When timing matters, you need a manufacturing partner that can turn orders quickly and keep output consistent. We focus on predictable lead times, clear communication, and bottles and jars that match spec from the first unit to the last.

CUSTOM PET BOTTLE DESIGN & ENGINEERING SUPPORT

Some customers arrive with a final print. Others arrive with a concept, a target fill volume, and a cap they already use. Either way, we offer custom PET bottle design and engineering support that focuses on how the container will be filled, capped, labeled, shipped, and used.

Typical design and development considerations include:

• Neck finish selection for CRC, tamper-evident (TE), pumps, sprayers, droppers, and induction seal compatibility
• Panel-resistance and shape stability for demanding liquids and handling
• Smooth sidewalls for clean label application
• Practical grip and features for users in the field or in the lab
• Clarity targets and tint options for product protection or brand identity

What is Injection Blow Molding?

PET injection blow molding is a manufacturing process used to produce strong, lightweight plastic bottles and containers from PET (polyethylene terephthalate). It starts by injection molding a small “preform” that looks like a thick test tube with the finished neck and threads already formed.

That preform is then reheated and placed into a mold, where high-pressure air stretches it outward to match the mold shape, creating the final bottle with consistent wall thickness, clean details, and excellent clarity. This method is popular for packaging because it delivers repeatable results, tight tolerances, and efficient production for everything from personal care to food and industrial products.

Benefits of Injection Blow Molding

Consistent quality and repeatability
Injection blow molding produces bottles with reliable dimensions and uniform results from run to run, which helps reduce rejects and keeps packaging consistent.

High-precision neck finishes
Because the neck and threads are injection molded, you get a clean, accurate finish that works well with caps, pumps, sprayers, and other closures.

Excellent clarity and shelf appearance
PET is naturally clear, and this process supports a smooth, glass-like look that improves product presentation and label visibility.

Strong, lightweight bottles
Controlled stretching during forming improves strength while keeping material use efficient, which helps reduce overall bottle weight without sacrificing performance.

Uniform wall thickness
The process is designed to distribute material evenly, supporting better durability, consistent squeeze feel (when desired), and reduced weak spots.

Efficient production at scale
Once tooling is dialed in, injection blow molding is well-suited for steady, high-volume output with predictable cycle times.

Reliable performance for filling and handling
Consistent bottle geometry supports smoother filling lines, better stacking, and fewer issues in packaging, shipping, and storage.