- Common types of glass bottles and jars include:
① General bottle jars, handle bottle jars, and tube-shaped bottle jars, with various holding capacities ranging from 1ml to 25l.
② Bottles and jars with different bottom shapes, such as round, oval, square, rectangular, and flat. The majority of bottles and jars are round in shape.
③ Bottles and jars with different mouth sizes, including wide mouth, small mouth, and spray mouth. Wide-mouth bottles, with an inner diameter greater than 30mm and without or with minimal shoulders, are often used for holding semi-fluids, powders, or solid objects. Small-mouth bottles, with an inner diameter less than 30mm, are commonly used for various liquid substances.
④ Bottles and jars with different matching forms of bottle mouth and bottle cap, such as continuous thread bottle mouth, cork bottle mouth, pouring bottle mouth, crown cap bottle mouth, rolling cap bottle mouth, plastic cap bottle mouth, spray bottle mouth, press-unscrew bottle mouth, side seal-pry open bottle mouth, glass stopper frosted bottle mouth, handle bottle mouth, and tube bottle mouth. The size and tolerance of bottle mouths are standardized.
⑤ Bottles and jars classified based on use requirements, including one-time use and recycling. One-time use bottles and jars are discarded after a single use, while recycling bottles and jars can be reused multiple times.
⑥ Molding method classification includes molded bottles and control bottles. Molded bottles are made by directly shaping the glass liquid in a mold, while control bottles are formed by drawing the glass liquid into a glass tube and further processing.
⑦ Bottles and jars categorized by color, such as colorless, colored, and milky bottles. The majority of glass jars are clear and colorless, maintaining the contents’ natural appearance. Green and brown are also common colors. Green bottles are often used for beverages, while brown bottles are used for medicines or beer due to their ability to absorb ultraviolet light and protect the contents. In the United States, regulations stipulate that the average wall thickness of colored glass bottles and jars should limit the transmittance of light waves with a wavelength of 290 to 450 nm to less than 10%. Some cosmetics, creams, and ointments are packaged in opalescent glass bottles.
- Advantages of glass tea:
- Heat-resistant material: Glass tea sets can withstand heating using candles or alcohol.
- High permeability: Transparent glass allows you to directly observe and appreciate the beauty of tea, flowers, or fruits during the brewing process.
- Preservation of original taste: Glass is non-porous and does not absorb the flavors of scented tea. This allows you to taste the original flavors at their highest standards, and glass is easy to clean, preventing residual tastes.
- Elegant shape: Glass tea sets are specifically designed for brewing scented tea, offering a crystal-clear texture that allows you to see the light tea color of herbal tea and enhances the overall enjoyment of drinking tea.