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Custom Plastic Caps and Closures
Home / Product / Custom Manufacturing / Custom Plastic Caps and Closures

Custom Plastic Caps and Closures

We are a professional plastic cap manufacturer, providing full-range custom cap services for water, beverage, and aseptic carton packaging brands, covering product lines such as mineral water bottle caps (28mm, 30mm), sports caps/pop-up caps, and matching caps for aseptic cartons. Whether you're a newly launched private brand or an established brand looking to switch suppliers, we can provide one-stop customization services for color, logo, mold design, and printing process based on your existing preform specifications, neck dimensions, or filling equipment parameters, with support for small-batch sample verification before placing a bulk order.

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  • Customization
Describe

Our Customization Capabilities

  • Color customization: Supports Pantone color code customization to meet brand visual consistency needs; a color swatch can be confirmed before mass production.
  • Logo/printing customization: Options include embossed logo, in-mold labeling, pad printing, or surface printing, with the specific solution confirmed based on MOQ and mold design.
  • Mold design and development: If your existing bottle spout/neck specification does not match a standard cap, we offer new mold development services to fit your proprietary bottle shape, shortening the onboarding timeline.
  • Material and sealing solutions: Food-grade PP/PE material, with different sealing liner or valve structures available depending on the filling medium (ambient water, hot-filled juice, carbonated beverages, etc.).
  • Sample support: Samples and small-batch trial orders are available, allowing you to verify color, logo appearance, and sealing performance before placing a bulk order, reducing production risk.

Applicable Product Types

Not yet sure of the specific cap size or type you need? Refer to the table below to quickly find the matching product page:

Type

Applicable Scenarios

Detail Page

Aseptic Carton Caps (aseptic carton caps / beverage carton spout caps)

Suitable for liquid/semi-liquid products packaged in aseptic cartons, such as juice, dairy, tea, coffee, carbonated soft drinks (CSD), and sauces, providing matching spout cap solutions for carton formats such as Brik, Slim, Prisma, Rex, and Gemina.

View Carton Cap Options →

Water Bottle Caps (standard water caps / mineral water bottle caps)

Suitable for PET bottled water products such as mineral water and purified water, covering mainstream neck finishes such as 28mm and 30mm, compatible with common neck finish standards such as PCO 1810 and PCO 1881, with standard tamper-evident tear band design.

View Water Bottle Caps Options →

Aseptic Packaging Materials (aseptic carton packaging materials / roll stock)

Suitable for liquid food filling plants that need to purchase roll-fed aseptic packaging materials, compatible with mainstream aseptic carton packaging formats such as Brik, Slim, Prisma, Rex, and Gemina.

View Aseptic Packaging Materials Options →

 

About
Lile (Taizhou) Technology Co., Ltd.
Lile (Taizhou) Technology Co., Ltd.
Established in 1994, we have consistently upheld the core philosophy of "craftsmanship, quality first" and are committed to becoming a leader in the global bottle cap industry. As a China-based .Custom Plastic Caps and Closures manufacturer and .Custom custom plastic bottle caps factory, we specialize in producing plastic bottle closures. Through continuous technological innovation and material research and development, we provide safe, reliable, environmentally friendly, and highly customized packaging solutions for a wide range of products, including beverages, foods, cosmetics, and pharmaceuticals.
As a professional source manufacturer, we have built a one-stop supply chain system from raw material procurement to production and processing, logistics and distribution, ensuring the precise connection of each link and providing partners with highly stable, timely and adaptable bottle cap solutions.
About Us
Founded in
1993
Year
Product Varieties
30+
Types
Production Capacity
800+
Million Units
Blogs

Custom Plastic Caps and Closures Industry Knowledge Extension

Food grade aseptic carton caps cover the full closure system used on liquid food cartons, from the resin the cap is molded from to the thread, liner, and tamper ring that keep the seal intact after filling. The material choice, the sealing structure, the opening size, and the fit to a specific carton spout all move together as one sourcing decision, not as separate checkboxes. Lile (Taizhou) Technology Co., Ltd specializes in producing food grade aseptic carton caps for beverage and liquid food brands, covering everything from resin selection to the finished screw cap, liner, and tamper ring. We work directly from carton spout drawings or samples, matching material and sealing structure to the actual filling process before any color or branding is added, so the cap fits the format it is built for from the first production run.

Material Logic: Food Grade PP vs PE

Most sourcing decisions start here, because the resin has to match how the product is filled before anything else about the cap gets decided.

General material behavior in aseptic carton cap applications.
Property Food Grade PP Food Grade PE
Heat resistance Higher, suited to hot fill and thermal sterilization Moderate, better for ambient or cold filling
Opening feel Firmer, holds thread shape under repeated use Softer, lower first open force
Typical liquid food fit Dairy, tea, RTD coffee, hot filled sauces Water, juice, cold filled beverages

It is common for one order sheet to carry both resins side by side, matched to different SKUs on the same production line rather than to a single house standard.

Sealing Structure at a Glance

Threaded Screw Fit Clamping force against the carton spout thread Inner Liner or Plug Compresses against the spout wall to block air and moisture Tamper Evident Ring Breaks on first opening, confirming the barrier held

These three elements are confirmed together against carton spout drawings, since a liner that fits one spout profile can sit loose or too tight on another even when the outer thread looks identical.

Matching Cap Models to Liquid Food Categories and Carton Formats

Opening size and mechanism need to fit two things at once: how the liquid pours, and which carton format the spout belongs to.

Thicker Liquids

Dairy, smoothies, and sauces move slowly, so wider openings such as StreamCap or Helicap 27 formats are typically specified to keep pour time manageable.

Thin, Fast Pour Liquids

Water, tea, and juice pour cleanly through narrower openings like Helicap 23, which also reduces resin use per cap.

On the Go Formats

Single serve cartons favor DreamCap or Mini DreamCap style direct drinking spouts, shaped for comfort rather than pouring into a cup.

Format families such as Brik, Prisma, Slim, and Gemina each carry their own spout geometry. A cap that is food grade in material still needs its outer diameter, inner diameter, and thread profile checked against the specific format drawing before tooling starts, since neck sizes that look close on paper can differ enough to affect the seal.

Spout Fit

From Drawing to Production: How Lile (Taizhou) Technology Handles a Food Grade Cap Order

  1. Confirm liquid category, filling process, and carton spout drawing or sample.
  2. Lock the sealing structure and resin choice against those specifications.
  3. Apply Pantone color and branding through embossed logo, in-mold logo, or surface printing on the outer cap body only.
  4. Produce a trial batch and run it on the actual filling line before releasing full production volume.

Lile (Taizhou) Technology Co., Ltd runs this sequence as a fixed order across its OEM and ODM projects, with structural confirmation always ahead of color and branding, not layered on afterward.

FAQ

Is PP or PE better for hot fill liquid food packaging?

PP generally handles hot fill and thermal sterilization better due to higher heat resistance, while PE is more commonly matched to ambient or cold filled beverages.

Do different liquid food categories need different cap opening sizes?

Yes. Thicker liquids such as dairy and sauces generally use wider openings for faster pouring, while thinner liquids like water and juice work well with narrower openings.

How do I confirm cap to spout compatibility before mass production?

Spout drawings or physical carton samples are sent to the cap manufacturer, who checks outer diameter, inner diameter, thread profile, and cap height against the actual spout before tooling begins.

Can food grade caps be customized without affecting the seal?

Yes, as long as color and branding are applied to the outer cap body after the sealing structure and material have already been confirmed against the carton spout.

What information does Lile (Taizhou) Technology Co., Ltd need to start a custom food grade cap project?

Carton spout drawings or samples, target liquid category, filling process details, and any color or branding requirements are the typical starting inputs for structural and mold confirmation.