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Glass Bottle

Why choose us?

About Us

TNN Group was established in 1998 and has been in business for over 20 years. Our headquarters are in Dalian, Liaoning, China, known for its beautiful coastline. We currently employ 33 people and have a network that includes offices, cooperative laboratories, independent e-commerce platforms, three overseas companies, two domestic offices, and two subsidiaries.

 

Certificates

We hold several certifications, including ISO9001, CE, EU GMP, Halal, and Kosher.

 

Production Lines

We operate five production lines with a monthly capacity of 10 million pieces.

 

Quality Assurance

We follow strict processes to ensure a pass rate of over 99%.

 

After-Sales Service

We provide world-class products with fast delivery and secure payment options to customers around the globe.

 

Product Range

Our products include filling and capping machines, labeling machines, crown caps, pull ring caps, RingTab caps, glass bottles, various labels, PET preforms, and PE films.

 

What is Glass Bottle

 

 

Glass bottle production begins with melting down the raw materials. Once the raw materials have been melted down, it is ready to be shaped into bottles. Glass bottles are formed through various techniques, but the primary technology is for each bottle to pass through two molds. The forming process is a method by which molten glass is poured into molds, a blank and then final mold, and creates a precise shape. This can be a common or popular bottle shape, or a completely custom design.

 

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Benefits of Glass Bottles
 

Glass Bottles are Eco-Friendly

One of the benefits of glass bottles is that they are 100% recyclable. They can be recycled numerous times without losing quality. In fact, 80% of glass containers are turned into new products. As a result, fewer emissions are produced and released into the air. The recycling process is relatively quick, with bottles returning to shelves in about 30 days. Glass bottles are a preferred choice among environmentally conscious consumers.

Glass Bottles – So Many Choices

We offer a wide range of glass bottles in various shapes, colors, and sizes, including Boston Rounds and Euro Rounds. Both types are available in amber glass, which is often used to protect oils, medicines, and other pharmaceutical products. Glass bottles with powder coatings prevent long-wavelength rays from damaging the contents inside.

Glass Bottles are Highly Durable

Glass bottles are generally very durable. While they can break if dropped, they tend to last much longer than many other types of containers. They can be reused multiple times without degrading in quality. Glass bottles are less likely to develop holes from daily use. Some types of glass bottles offer additional strength: thicker glass enhances durability, and powder-coated bottles have greater resistance to chipping and scratching. The durability of glass bottles can save money by reducing the need to frequently replace them.

 

Quality Check (QC) of Glass Bottles

Several quality checks are typically performed on glass bottles once they have been formed. Some of the most common checks include:

Visual Inspection: This is the first step in the quality control process and involves examining the bottles for visible defects such as cracks, chips, or uneven walls. This is usually done by an experienced operator on the production line using special lighting and magnification devices.


Dimensional Inspection: This involves measuring the dimensions of the bottles to ensure they meet the specified tolerances. This might include measurements of the bottle's length, width, height, or volume.


Weight Inspection: The weight of the bottle is checked to ensure it meets the specifications.


Wall Thickness Inspection: Measuring wall thickness is crucial to ensure that the bottle can withstand the specified weight and pressure. This helps prevent breakage or cracking during filling, shipping, and handling.


Hydrostatic Pressure Test: This test ensures that the bottle can withstand the pressure it will be subjected to during use. A sample bottle is filled with water and pressurized to a specific level to check for any leaks or cracks.


X-Ray Inspection: For certain types of containers that have multiple layers or are used for food and medical packaging, X-ray inspection is a common method to detect internal defects or foreign objects.

 

How are Glass Bottles Made?
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Step 1: Melting the Raw Material Mixture
The raw materials are carefully weighed and mixed according to the desired properties of the glass bottle. The glass batch is then fed into a furnace, where it is subjected to high temperatures until it melts and is ready for molding.


Step 2: Forming the Glass Bottle
Once the mixture has melted and formed into gobs, a blade cuts it to create gobs of equal weight before they undergo the forming process. The weight of each gob is crucial in creating each glass bottle or jar. Molten gobs are fed into forming machines, where gravity assists in shaping the glass. Pressure within the forming machine molds the neck and overall shape of the glass bottle. The bottle’s final shape is achieved using either the Press and Blow or Blow and Blow method, depending on the type of glass container being produced.


Step 3: Annealing
After forming, the bottles undergo annealing. This process involves cooling the glass containers at a controlled rate to eliminate internal stresses that could cause shattering or cracking. The bottles are transferred to an annealing lehr, where they are reheated to around 1,050°F and then gradually cooled to about 390°F.


Step 4: Final Inspection
The final step is a thorough inspection of the bottles and jars to ensure they meet quality control standards. Any bottles with imperfections, such as misshapen areas, cracks, or bubbles, are removed and recycled as cullet.

 

Are all types of glass bottles recyclable?

 

Yes. All types of glass bottles are 100% recyclable. Glass is made from naturally occurring materials like sands and other minerals through various processes. Once glass is made, it takes a very long time for it to decompose. It takes over a million years for glass to completely decompose, what this means is that the first-ever glass to be made is still around, intact.

 

Due to this reason, the best way to deal with an object possessing such longevity is recycling. All types of glass bottles can be recycled for reuse, and the process spares the environment a lot. For every ton of glass that is recycled, there is a corresponding ton of natural resources that are spared in return.

 

 
Tips for Cleaning and Maintaining Glass Bottles
 

Glass bottles are a popular choice for storing drinks and food due to their durability, reusability, and lack of harmful chemicals. However, like any other kitchenware, glass bottles need proper cleaning and maintenance to ensure they last a long time. Here are some tips on how to keep your glass bottles in top condition:

01/

Clean Immediately After Use: It's essential to clean your glass bottles right after use. This is especially important if the bottle has stored acidic liquids, such as vinegar or lemon juice, as these can cause discoloration and etching if left too long. To clean your glass bottles, fill them with warm water and a drop of dish soap, then use a bottle brush to scrub both the inside and outside. Make sure to clean all nooks and crannies, including the cap or lid. Rinse thoroughly with clean water and dry with a clean towel.

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Use Baking Soda for Cleaning: Another effective cleaning method is using a mixture of water and baking soda. Fill the bottle with warm water and add a few tablespoons of baking soda. Shake the bottle vigorously to distribute the baking soda, then use a bottle brush to scrub the inside. Rinse with clean water and dry with a towel. Baking soda is a natural cleaner that effectively removes stains and odors.

03/

Tackling Tough Stains: For stubborn stains and residues, use a combination of white vinegar and baking soda. Fill the bottle with equal parts white vinegar and water, then add a tablespoon of baking soda. Shake vigorously to mix the ingredients and let the solution sit for an hour. Scrub the inside with a bottle brush, rinse with clean water, and dry with a towel.

04/

Avoid Abrasive Materials and Harsh Chemicals: To maintain the clarity of your glass bottles, avoid abrasive sponges or steel wool, which can scratch the glass. Additionally, steer clear of bleach or harsh chemicals that can damage the glass and leave residues.

05/

Store Properly: Store your glass bottles in a cool, dry place away from direct sunlight. Sunlight can cause discoloration and damage over time. If you must store them in a sunny area, consider covering them with a towel or cloth to protect them from the sun’s rays.

06/

Check for Cracks or Chips: Always inspect your glass bottles for cracks or chips before each use. Even small imperfections can lead to breakage or shattering. Replace any damaged bottles as soon as possible.

 

Types of Glass Bottles
 
Divide by Uses

Food Packaging
Although glass bottles for food products are heavier than plastic alternatives and risk breaking if dropped, they offer several key benefits in terms of health and food safety. Glass bottles are chemically inert, which is crucial for customers concerned about ingesting harmful chemicals such as BPA.
Pre-Cleaned, EPA Level One Glass Bottles
Standards for contaminant-free, pre-cleaned EPA Level One glass bottles are outlined in the U.S. Environmental Protection Agency (EPA)’s Specifications and Guidance for Contaminant-Free Sample Containers. These bottles are used in lab work, sampling, testing, and validation. Pre-cleaning is important because even new bottles may contain contaminants from manufacturing or handling that could skew results. Pre-cleaned glass bottles come with caps attached and can be certified by a third party before delivery. "Pre-cleaning" can refer to cleaning for contaminants, particulate contamination, sterilization, or removal of visible particles.
Plastic-Coated Glass Bottles
Plastic-coated glass bottles provide protection from mechanical impacts (such as being dropped) and help reduce leakage if the glass breaks. This is ideal for handling volatile substances, as the plastic coating will contain the substance long enough after breaking to allow for safe disposal. Plastic-coated glass bottles offer the chemical resistance of glass and the safety of plastic. However, their maximum temperature is lower than that of glass-only bottles; they should not be used above 302 degrees Fahrenheit or exposed to direct heat or flame.
General Characteristics
Glass bottles are non-toxic, tasteless, transparent, and visually appealing. They also offer good barrier properties and can be reused. Common food packaging items include honey, fruit tea, fruit and vegetable juice, wine, beer, soda water, and milk. These products benefit from glass bottle packaging due to its safety and health advantages.

Divide by Bottle Shape

Boston Round
This heavy and strong bottle is commonly used for chemical applications, but is also popular in the food and cosmetic industries. Boston Rounds have a classic, apothecary look. They are usually clear, blue-tinted, amber-tinted, green, or frosted.
Glass Jar
Glass jars are commonly used for food packaging, such as fruit preserves, vegetable canning, jam, and biscuits. Types of jars include:

  • Economy Round Jars: Common in supermarkets, they have a wide mouth and are perfect for sauces, like classic mayonnaise jars.
  • Paragon Jars: Higher and leaner, often used for olives, pickled products, jam, and jelly preserves.
  • French Square Jars: Durable jars with four distinct sides, often used for bath crystals, herbs, and other items. They offer multiple labeling possibilities.
  • Standard Spice Jars: Available in round or square shapes, commonly found in grocery stores.
  • Hex Jars: Six-sided jars, often used for elegant jar candles, bath salts, or high-end jams and sauces.
  • Mason Jars: Popular for canning, DIY projects, and items sold at farmers markets. "Mason" or "Ball" branded jars are well-known.
  • Straight-Side Jars: These jars have virtually no neck, making it easier to scoop out contents. They are widely used for hand and face creams.

Cylinder Bottle
Commonly used for wine, liquor, brandy, vodka, whiskey, and sauce bottles, these bottles are characterized by their cylindrical shape.
Square Bottle
With a square cross-section, these bottles are less strong and harder to manufacture than round bottles. They are used for olive oil and some liquor bottles.
Curved Bottle
These bottles have a round cross-section but are curved in the height direction, featuring inner concaves and outer convexes. Popular shapes include vase-type and calabash-type bottles.
Skull Bottle
Recently popular, skull bottles are trendy among young people and are often seen at bars. Their unique design makes them stand out.
Different Shape Bottles
The market offers various uniquely shaped bottles, including piano-shaped, map-shaped, star-shaped, apple-shaped, leaf-shaped, and shoe-shaped bottles. These unique shapes often feature custom labels or silk screen printing for added visual appeal.

Divide by Color

Glass bottles come in various colors, including blue, green, black, white, and brown. These colors are achieved through painting and deep processing technology and can be selected based on personal preferences.

Divide by Size of the Bottle Mouth

Narrow-Mouth Bottle: The inner diameter of the bottle mouth is smaller than 20mm and is used for liquid materials like soda water and spirits.
Wide-Mouth Bottle: The inner diameter of the bottle mouth ranges from 20-30mm, with a thick and short bottle shape, commonly used for milk bottles.

Divide by Different Uses

Spirit Bottle: Glass bottles are widely used for packaging alcoholic beverages, including spirits, and typically have a round shape.
Cosmetic Bottle: Used for various cosmetic packaging, including cosmetics, ink, and glue. The bottle shape and seal vary depending on the product.
Canned Bottle: Most canned bottles are jars with capacities ranging from 150ml to 1000ml.
Medicine Bottle: Used to package drugs, with capacities ranging from 10ml to 200ml for narrow-mouth screw-type bottles, 100ml to 1000ml for infusion bottles, and ampoule bottles with complete sealing.
Chemical Reagent Bottle: Used for packaging various chemical reagents, typically with capacities from 250ml to 1200ml. Most have screw or grinding mouths.
Wine Bottles: These are usually clear for white wines and tinted for red wines, with a standard shape for wine packaging.
Liquor Bottles: Available in tinted or clear glass, with threaded caps or corks. These sturdy bottles come in various styles and sizes, often custom-made for brands.
Olive Oil Bottles: Tall and slender, these bottles typically hold olive oil. Marasca bottles have a square body, while Dorica bottles are round.
Sauce Bottles: These come in various styles and are commonly used for sauces like BBQ sauces and salad dressings. Many brands have transitioned to plastic bottles over the years.

Divide by Bottle Neck Shape

Bottles can have various neck shapes, including:

  • Neck Bottle
  • No Neck Bottle
  • Long-Neck Bottle
  • Short-Neck Bottle
  • Thick-Neck Bottle
  • Flask

Long-necked bottles come in various sizes and are commonly used for hot sauces and cocktail bitters. Cooking wines and some vinaigrettes also use this style.

Divide by Material

Glass bottles are available in several materials, including:
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What Are the Colors of Glass Bottles?

 

 

Glass bottles, made from glass raw materials, come in a variety of colors. Common colors include transparent, green, brown, blue, dark green, and emerald green.


Currently, transparent white glass bottles are widely used and in high demand. The production process involves several raw materials: quartz sand, soda ash, limestone, feldspar powder, borax, sodium nitrate, calcite, and recycled glass. These materials are mixed and crushed before being melted in a kiln at temperatures between 1550°C and 1600°C to form molten glass. The molten glass is then processed to create transparent white bottles. It can also be treated to produce green, brown, or other colored glass bottles, or to have a frosted surface.


Glass bottles are popular and environmentally friendly packaging containers. They are commonly used for decorative purposes, tableware, and packaging in the food and beverage industry. Glass is a key material in packaging due to its cost-effectiveness and versatility.


Glass bottles are used for a variety of applications, including wine, beverages, oil, canned food, acids, medicine, reagents, infusions, and cosmetics. Their unique characteristics make them irreplaceable by other packaging materials.

 

 
Our Factory

 

Since 1998, TNN Group has been founded for over 2 decades. Head quarter locates in Dalian -the most beautiful coastal city in Liaoning, China. Currently, TNN has 33 staffs, self-owned offices, cooperative laboratory, independent e-commerce platform, ISO9001 and CE certification, independent trademark and other high-level professional office equipment and institutional certifications, 3 overseas companies, 2 domestic offices and two subsidiaries..

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FAQ
 

Q: What are the different types of bottle glass?

A: Type I - Borosilicate Glass (also known as Pyrex)
Type II - Treated Soda-Lime Glass.
Type III - Soda-Lime Glass or Soda-Lime-Silica Glass.

Q: How do I tell what kind of glass bottle I have?

A: Identifying the specific manufacturer can provide clues about the bottle's age, origin, and potential value. Mold and Bottle Numbers Numeric or alphanumeric codes on the base can indicate the mold used to form the bottle. These mold numbers can help researchers track production runs and identify when a bottle was made.

Q: What are the most common glass bottles?

A: Common shapes in modern commerce include:
Boston round or Winchester bottles - cylinder with heavily rounded top and bottom; thick glass, typically clear, blue, or amber. ...
Long-necked or Woozy bottles - tall cylinder with a prominent neck, many of which are used as beer bottles

Q: What is a large glass bottle called?

A: The large oval or globe-shaped glass bottles often used as accessories in French country- and farmhouse-style home decor are called demijohns. They are easy to spot with their bulbous shape and narrow neck. Demijohns were used in Europe as early as the 1400s for fermenting wine and beer.

Q: What type of glass are glass bottles made of?

A: The type of glass this mixture will produce is known as soda-lime glass, the most popular glass for food and beverages. Molten glass gobs are cut by a perfectly-timed blade to ensure each gob is of equal weight before it goes into the forming machine.

Q: Why are glass bottles different colors?

A: Green glass offers a bit more light protection. Liquids such as wine or juice can be exposed to sunbeams, so that explains the green bottles for wine. Brown, black and UV glass offers the best protection against light. The taste of beer could be ruined by light absorption, which is why it mostly comes in brown bottles.

Q: What is a tiny glass bottle called?

A: A vial (also known as a phial or flacon) is a small glass or plastic vessel or bottle, often used to store medication in the form of liquids, powders, or capsules. They can also be used as scientific sample vessels; for instance, in autosampler devices in analytical chromatography.

Q: Why do old glass bottles turn purple?

A: An interesting characteristic of colorless glasses which contain manganese dioxide as a decolorizer is their tendency to turn different shades of purple when exposed to the rays of the sun or to other ultra-violet sources. It is a photochemical phenomenon that is not yet perfectly understood.

Q: Do glass bottles have a shelf life?

A: The glass bottle per se does not have any expiration date… Water in any closed bottle will have some expiration date because at room temperature, there will be a slow increase in the bacteria in the water and that affects the quality.

Q: What is the bottom of a glass bottle called?

A: The base is the very bottom of the bottle – which includes the push-up. That's the concave area that helps to ensure stability, reduces the interior volume of the bottle, and allows the base to be marked with a recycling code, cavity number, and registration feature used during labeling or print application.

Q: What makes old glass bottles valuable?

A: Bottles that are in pristine condition – those that are free from damage, chips, discoloration, or blemishes of any kind – hold the highest value. Bottles that are near perfect or in very good condition have minor wear, but are near perfect and therefore worth almost as much as bottles in mint condition.

Q: How do I identify a glass bottle?

A: These markings serve multiple purposes, including: Manufacturer Identification: The name, initials, or logo of the company that produced the bottle is commonly found embossed into the base. This allows collectors to attribute the bottle to a specific glassmaker.

Q: What is the dot code on a glass bottle?

A: Modern glass bottles, jars and other molded glass products still have them too, but sometimes are encoded as series of dots and spaces. Generally they're manufacturing codes identifyung the mould and maker and often the company code of the item itself. Sometimes one # will indicate volume as well.

Q: What are the numbers on the bottom of old glass bottles?

A: In our daily life, consumers can see a large string of numbers or letters on the bottom of some glass bottles. These are actually the serial numbers of the glass mold.

Q: How can you tell the quality of a glass bottle?

A: It involves checking the surface of the glass bottle for defects such as cracks, bubbles, impurities, or scratches. Dimension measurement: Measure the dimensions of the glass bottle to ensure that it meets design requirements and specifications.

Q: How do you date a glass bottle?

A: Much of the time, the mold seam height indicates how old the bottle is. Machine-produced bottles from 1905 through the 1920s displayed higher, thicker mold seams compared to later machine-made bottles. As technology progressed, the seams grew thinner until they reached a hair's thickness.

Q: What type of glass are glass bottles made of?

A: The type of glass this mixture will produce is known as soda-lime glass, the most popular glass for food and beverages. Molten glass gobs are cut by a perfectly-timed blade to ensure each gob is of equal weight before it goes into the forming machine.

Q: Why are glass bottles different colors?

A: Green glass offers a bit more light protection. Liquids such as wine or juice can be exposed to sunbeams, so that explains the green bottles for wine. Brown, black and UV glass offers the best protection against light. The taste of beer could be ruined by light absorption, which is why it mostly comes in brown bottles.

Q: How can you tell how old a glass bottle is?

A: The seam would be visible from the base of the bottle to the mouth or the shoulder. It is believed that mold seams can tell the age to an extent. The higher the seam, the newer the bottle. Glass bottles made with recent, sophisticated technology do not have any visible seams.

The TNN Development Limited is one of the most professional glass bottle manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to buy discount glass bottle made in China here from our factory.

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