What is Glass Bottle Crown Cap?
Universal bottle caps are a standard 26mm beer bottle cap that fit pry off or twist off glass bottles. Manufactured specifically with a liner to seal a bottle of beer or other drink. Made from virgin tin plated steel and contain no recycled material.
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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.
Features of Glass Bottle Crown Cap
You know that the final touch of sealing your glass beer bottle is as crucial as the brewing process itself. Our Crown Caps are designed to lock in the essence of your craft beer, ensuring each sip is as fresh as the first.
Universal Fit: Designed to snugly fit any standard beer bottle (275ml breeze, 200ml milk, 330ml beer brown bottle, or 650ml large brown bottle), making them versatile for all your homebrewing needs.
Superior Quality: Kombucha and nitro coffee are more acidic than your average juice/beer or drink that one packs. Hence these bottles have a molded lining material to ensure that rusting and stains do not damage your product.
Higher carbonation: Most home brewers use priming sugar or natural carbonation. This means that their beer, kombucha has higher level of carbonation and can pop out/burst if not handled properly. Our caps weigh an average of 2.2gm which makes them stronger and more reliable than anything else in the market.
Crafted from hardened pre-crimped steel that withstands the pressure of carbonation, keeping your beer perfectly fizzy.
Easy to Use: Whether you're a novice or a seasoned brewer, our crown caps are simple to apply with a standard capping tool.
Variety of Colors: Choose from a range of colors to match your brew's personality or to categorize your creations.
Crown caps have become an iconic feature of beer around the world. Giving opportunity for increased brand recognition, and even a collectable item for some consumers. But where did the crown cap begin and what is the history behind crown caps?
Before the invention of crown caps, the average life of beers and soft drinks was short. Often sealed with corks, these seals lacked reliability and often had leaks of both liquids and carbonated gases. Then, in 1892, the crown cap was patented by William Painter, and it revolutionised the beer industry.
Inexpensive to produce, it was composed of metal with a knurled end in the form of an inverted crown (hence the name crown cap). To prevent any leakage of liquid, the cap was covered with a thin cork disc and a film sealing the contents of the bottle. This was to avoid the direct contact between liquid and the metal which could have affected the purity and taste of the beverage. The reliability of the seal allowed breweries to distribute beer over longer distances due to its extended shelf life.
In the early 20th century, William Painter's cork crown quickly became the preferred sealing method due to its reliability and ability to preserve the freshness and carbonation of beer. However, with prohibition in 1920, the focus of the crown cap was shifted to carbonated soft drinks. With the end of prohibition, came the wide use of crown caps across the drinks market.
It originally had 24 teeth, along with a cork seal with a paper backing to stop the liquid and metal from touching. Since, the cork disc has been replaced with PVC material and the cap height has been shortened. In the 1930s, testing was carried out to determine the optimal number of teeth, as the 24 teeth, that was standard, made the cap too tight and difficult to open. The current version has 21 teeth and is international standard. The standardisation of the crown cap design with 21 teeth has allowed for compatibility and ease of use across different bottle sizes and brands.
The crown cap provides more than just a secure seal for breweries, but also a unique branding opportunity. By customising design, colour, and logo, breweries can establish their brand identity to help increase visibility and brand recognition. This can be a useful tool for products placed in supermarkets, with height of display varying. The association of specific crown cap designs to consumers favourite breweries helps to create a familiarity and trust, which has helped to enhance brand loyalty for beer brands.
As well as brand recognition, the easy-to-use design has benefited consumer experiences. There is something special about the sounds of a crown cap being popped off a beer bottle with a whisp and a fizz. The convenience of opening a crown cap has also made consumption more accessible, contributing towards a positive reputation for the beer industry.
The crown cap is still widely used for closing beers and many soft drinks in glass bottles. It is also often used for the second fermentation of champagne and classic wines. The crown cap has become a stalwart part of the drinks industry and will always be known as a revolution that helped change the beverage industry forever.
The Difference Between Pry-Off and Twist-Off Closures
You knows the famous 26 mm crown corks, ideal for closing glass, plastic and aluminum bottles containing any type of drink (water, beer, wine, soft drinks and much more), but not everybody knows that there are two versions of this historic closure, one called "pry-off" and the other "twist-off".
While these two variations look very similar, they are not the same.
At first sight, the two types of cap have the same external appearance: metal shell, corrugations or more simply "crown" and an internal liner. But if you focus better on certain details, you can catch significant differences and distinguish them from each other.
The main difference between the two caps is the method of opening; in fact, the pry-off closures can be removed from the neck of the bottle only with the help of a bottle opener or key, instead, to remove the twist-off caps, it is simply necessary to unscrew them from the bottle with a simple twist of the hand.
Another substantial difference can be seen in the internal liner, in fact it is possible to distinguish the two versions by analyzing the internal surface of the cap. This is because pry-offs feature a dual-lip seal while twist-offs require a single-lip seal.
The presence of one lip or two lips is due to the structure of the various bottles, particularly that of the neck finish, the upper part of the bottle where the closures are applied. In fact, bottles intended for use with pry-off caps have a profile that requires a double lip to adhere perfectly both inside and outside the neck finish. Instead, the more "boxy" profile of the twist-off cap bottles was specifically created to position the closure at the edge of the neck finish and achieve a complete seal, while at the same time allowing for an easy twisting motion to remove the closure.
The crown cork is one of the most widely used closures in the beverage sector, especially for the beer world, this is because it is a reliable product, easy to customize with company logos or creative lithographs, and configurable in every detail.
Pry-off or Twist-off: tradition vs comfort
Generally, European breweries prefer the use of the pry-off cap, in the North American market, particularly in the United States, small craft breweries opt for the use of a pry-off crown cap, following the European trend, while medium and large breweries usually choose the twist-off version, to facilitate manual opening for the end customer.
Material Analysis of Glass Bottle Crown Cap
The manufacturing method includes the steps of: steel making, hot rolling, pickling cold rolling, continuous annealing and leveling.The annealing temperature in the continuous withdrawal process is adjusted, so that the cold-rolled sheet is in an intermediate annealing state, and part of the unrecrystallized structure is retained. In this way, the strength level of the strip is guaranteed, and at the same time, the strip has a certain elongation rate to ensure its deformation ability during the stamping process.
Due to having good sealing performance, crown cap can keep pressure and quality and taste unchanged for a long time, so it is widely used in industries such as beer and carbonated beverages packed in glass bottles, and wherein beer industry is the main. The crown cover is a stamped tinplate, generally made of T4 material with a thickness of 0.22~0.24mm and a hardness of HR30Tm of 61 ± 3. There are two types of surface plating: tin plating (SPTE) and chrome plating (TFS). With the development of the food packaging industry, it is proposed to reduce the thickness of the crown cover, increase the strength, and use low-cost chrome plating (TFS) instead of tin plating.
Metal printing is rarely the printing of final products, but is often an integral part of the processing process of various containers, covers, building materials, household electrical appliances, furniture, nameplates and various miscellaneous supplies. life is the main purpose. Therefore, in order to arouse consumers' desire to buy and improve the sales value of commodities, as a means of promotion, novel binding designs and exquisite printing should be carried out. In this way, metal printing becomes more important.
The Production Process and Quality of The Crown Cap
Bottle Caps: Bottle caps are bottle caps with sizes, materials of various sizes, bulking, and liner processing to form a bottle cap with a certain outer diameter, height, and skirt teeth.
Materials For Bottle Cap Production:Iron plates, various coating materials, printing inks, liner materials, etc. are processed and combined.
Iron: Is the main material of the cap shell
Coating: It protects metal materials from scratches and corrosion
Printing ink: It is the carrier for presenting text, patterns, categories and publicity activities
Liner material: Is the sealing material of the bottle cap
Beer crown cork is widely used in beer ,juice ,soda drink and water glass bottles . Top color and logo is good way to show your brand and product feature . The pry off crown cap and twist off crown cap are also used with high quality PE liner . The cap size is standard 26mm . This is the international standard size, which can be well used in glass bottles, with a perfect seal to ensure the taste of the product. If necessary, high-temperature materials can also be customized for high-temperature sterilization products to fully meet various requirements.
These crown caps are neutral and consequently suitable for any type of beverage, both still and sparkling (water, beer, soft and energy drinks, dairy products). Suitable for any type of requirement, they can be made in a vast range of materials and are compatible with sterilization processes. They can be decorated both internally and externally with offset printing and used for competitions and promotions.
High-quality pattern printing will make the whole product unique and highlight the charm of the product. The shape of the crown cover is regular, and the standard number of teeth is 21, which is more smooth to use and improves the efficiency of production.Each batch of products must go through SGS quality inspection, in order to more confidently prove the high quality and high requirements of our products.Standard and sturdy packaging keeps the product safe in transit.
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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