Home / News / What Do PB, BB And NNPB Mean in The Glass Bottle Production Line?

What Do PB, BB And NNPB Mean in The Glass Bottle Production Line?

Views: 198     Author: Site Editor     Publish Time: 2023-11-06      Origin: Site

facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
whatsapp sharing button
sharethis sharing button

The most well-known glass production line is the glass bottle and jar production line, and the bottle-forming method is one of the most important links in this production line. Three common bottle-forming methods are Pressure-Blow (PB), Blow-Blow (BB), and Narrow Neck Press and Blow (NNPB). We will explore the process, applications in this article and know why is important to understand them.

glass bottle production line

Pressure-Blow Method

The Pressure-Blow method is a glass bottle manufacturing technique that involves creating a glass parison and shaping it with air pressure.

Forming Process

A small, thick-walled glass cylinder called a "parison" is made by cutting a specific amount of molten glass from a larger mass.

The parison is placed into a mold with the desired bottle shape.

Compressed air is injected into the parison, causing it to expand and take the shape of the mold.

The bottle cools and hardens before being removed from the mold.

Narrow Neck Press and Blow Method

The Narrow Neck Press and Blow method is used for creating glass bottles with a narrow neck and distinctive body shapes.

Forming Process

A glass gob is placed in a mold equipped with a narrow neck ring and an open top section.

A plunger is used to press the glass into the bottle's body shape, while the narrow neck is formed.

The plunger is withdrawn, and compressed air is blown into the narrow neck ring to expand the glass into the final bottle shape.

The bottle cools and hardens inside the mold before removal.

Blow-Blow Method

The Blow-Blow method is efficient for producing lightweight glass bottles, often used for beverages and cosmetics.

Forming Process

A glass gob is formed and placed in the "blank mold," where it partially takes shape.

The partially shaped preform is then transferred to the "blow mold."

Compressed air is blown into the preform in the blow mold, expanding it into the final bottle shape.

The bottle cools and hardens inside the mold before it is taken out.

These methods each offer unique advantages and are chosen based on the specific requirements of the glass bottle being produced, such as its design, thickness, and production volume.

The Significance of the Emergence of NNPB Production Technology

Enhanced Design Freedom: NNPB technology offers unparalleled design flexibility, allowing the creation of glass bottles with unique shapes and intricate designs that were once challenging to produce.

Sustainability and Material Savings: The technology allows for lightweight yet strong bottles, contributing to sustainability efforts by reducing material usage and transportation costs.

Revolutionizing Brand Identity and Customization: NNPB technology enables the production of distinctive glass bottles with unique shapes and intricate designs, enhancing brand identity and product differentiation. Additionally, it has revolutionized the launch of limited-edition or specialty bottles, opening new opportunities for niche markets and exclusive products, thus contributing to brand differentiation and customization.

Application: Pressure-Blow VS Narrow Neck Press-Blow Process VS Blow-Blow


General Purpose Bottles: The Pressure-Blow method is suitable for producing a wide range of general-purpose glass bottles, such as those used for soft drinks, juices, and condiments.

Standard Bottle Shapes: It is ideal for bottles with standard shapes, where consistency and cost-effectiveness are essential.

High-Volume Production: Pressure-Blow is often chosen for high-volume production due to its efficiency and repeatability.

Narrow Neck Press-Blow

Distinctive Bottle Shapes: The Narrow Neck Press-Blow process is often chosen for creating glass bottles with unique body shapes and narrow necks, making it suitable for premium or specialty products.

High-End Liquors and Wines: It is commonly used for high-end liquors, wines, and spirits, where the bottle's design and appearance play a significant role in branding.

Limited-Volume Production: This method may be preferred for smaller production runs of specialized bottle designs.


Beverage Bottles: The Blow-Blow method is commonly used for producing lightweight glass bottles for beverages such as soda, water, and beer. It is well-suited for high-speed production of uniform, thin-walled bottles.

Cosmetic and Perfume Bottles: Blow-Blow is also used for creating glass bottles for cosmetics and perfumes, allowing for intricate and decorative designs.

Lightweight and High-Volume Products: This method is ideal for applications where lightweight and high-volume production is required.

The choice of glass bottle manufacturing method is influenced by the specific needs of the application. Blow-Blow is favored for lightweight and high-volume products, Narrow Neck Press-Blow is chosen for bottles with distinctive shapes, and Pressure-Blow is well-suited for producing standard-shaped bottles in high quantities. Each method offers advantages and caters to different market segments and design requirements.

The Importance of Understanding These Methods

Understanding the various methods used in glass bottle production, such as the Blow-Blow process, Narrow Neck Press-Blow (NNPB) process, and Pressure-Blow process, is essential for several reasons:

Different methods result in bottles with distinct characteristics.

Knowing these methods enables manufacturers to tailor their production processes to create bottles that meet specific design requirements.

Selecting the right manufacturing method can significantly impact production efficiency.

Different methods have varying costs associated with equipment, labor, and energy consumption.


What is the suitable method to produce narrow-neck bottles?

For narrow-mouth bottles, both BB and PB methods can be used, but the choice depends on specific requirements. Blow-Blow is often favored when lightweight, thin-walled bottles with narrow mouths are needed, while Pressure-Blow may be chosen when standard-shaped narrow-mouth bottles are to be produced in high volumes. The selection should be based on the design, thickness, and production volume needs of the narrow-mouth bottles in question.

Are these glass bottle production methods compliant with industry regulations?

Yes. Glass bottle production methods, including Pressure-Blow, Narrow Neck Press and Blow, and Blow-Blow, are typically designed and executed in compliance with industry regulations and standards. These regulations ensure that the manufacturing processes adhere to safety, quality, and environmental guidelines. Manufacturers in the glass bottle industry must meet specific standards to produce bottles that are safe for consumers and the environment.

How do I choose the right manufacturing method for my needs?

Start by clearly defining the desired bottle design and specifications. Consider factors like the bottle's shape, size, neck type, and any special features or decorative elements.

Determine the quantity of bottles you need to produce. Some methods are more suitable for high-volume production, while others are better for smaller runs.

Consider the weight and thickness of the glass walls. Depending on your application, you may require lightweight bottles or thicker, more robust ones.

Product Inquiry


  +86  198 0514 3366
   +86  138 0514 3366
   +86   25 52445152
  Building B1,Yinkun. Future Convergence, Nanjing University Alumni Economic Industrial Park,55# Runli Rd,Lishui District,Nanjing
  NO.1,Xingpu Rd,Shiqiu Town, Lishui,Nanjing

Quick Links

Get in Touch

Copyright © Nanjing Baisheng Glass Technology Co., Ltd. All rights reserved.