Wholesale Glass Essential Oil Bottle Manufacturers

What are the types of dropper designs for cosmetic glass essential oil bottles?

Classic Glass Dropper
This is the most widely used type of dropper, usually composed of a glass tube, a rubber or silicone ball head, and a plastic or aluminum bottle cap. Its features include:
Precise liquid suction ability: The glass tube has excellent chemical stability and visual transparency, making it easy to observe the amount of liquid suction;
Widely used: Suitable for most essential oil products, especially natural oils containing active ingredients;
High cost performance: Mature manufacturing, reasonable cost control, suitable for mass production.
Shaoxing Roman Plastic Co., Ltd. has more than 50 injection molding equipment and 15 assembly and packaging lines, which can mass-produce traditional dropper components, while supporting customers' OEM/ODM needs, and realizing full-process support from structural design to product landing.
Push-Type Dropper
Push-Type Dropper is a popular upgraded design in recent years. It uses the button on the top of the bottle cap to control the liquid discharge, which is more accurate and convenient to use. Its advantages include:
Simple operation: one-handed pressing can complete the liquid absorption and dispensing action;
Good sealing performance: effectively prevent air from entering the bottle and avoid oxidation of essential oils;
High-end image: widely used in high-end skin care products and customized products.
Shaoxing Roman Plastic Co., Ltd. uses its professional capabilities in surface treatment technology (such as UV spraying, thermal transfer, silk screen printing, etc.) to customize the exterior of the dropper according to the brand style to enhance product recognition and market competitiveness.
Safety leak-proof dropper (Child-Resistant Dropper)
This type of dropper is designed to prevent children from accidentally opening the bottle cap. It meets international cosmetic safety standards and is particularly suitable for products with concentrated essential oils, CBD oils, etc. that have strict dosage control.
Complex structure and high safety: requires a specific pressing and rotating method to open;
Strong regulatory compliance: complies with safety packaging regulations in the European and American markets;
Emphasis on functionality: not only protects users, but also extends the shelf life of products.
Shaoxing Roman has accumulated a lot of experience in the development and production of child-resistant structures in the process of contacting customers in North America, Germany, Australia and other regions, and can provide compliance design services according to the regulations of different countries.
Diversified design of tip materials
The tip of the dropper (usually made of rubber or silicone) also has a significant impact on the user experience. The company can provide the following options according to customer needs:
Natural rubber tip: soft to the touch, good elasticity, suitable for general skin care products;
Medical grade silicone tip: high temperature resistant, corrosion resistant, suitable for highly active or sensitive formula essential oils;
Environmentally friendly material selection: in line with the trend of sustainable development, support recycling and biodegradable material alternatives.
Shaoxing Roman Plastic Co., Ltd. continuously upgrades material solutions in combination with market trends, and at the same time, with advanced label pasting and hot stamping technology, brand logos or function prompts can be customized at the tip to enhance user awareness.
Integrated Design Dropper
This type of dropper integrates the dropper and bottle cap design. By designing an integrated and smooth structure, it not only has a more refined appearance, but also reduces the assembly process and improves product consistency.
Improved visual aesthetics: more concise and modern;
Reduce the risk of mis-installation: reduce the number of parts and improve the efficiency of automated assembly;
Beneficial to brand management: unified overall packaging and high recognition.

Does the bottle mouth design of cosmetic glass essential oil bottle affect the sealing performance?

The basic relationship between bottle mouth design and sealing performance
As the interface between the glass essential oil bottles and the external environment, the bottle mouth is the key part to achieve sealing, liquid control, leakage prevention and oxidation prevention. A glass essential oil bottle with good sealing performance must have the following bottle mouth characteristics:
Standardized caliber: fits tightly with the matching dropper or bottle cap without deviation;
High flatness: the cut surface of the bottle mouth must be smooth, without broken edges and burrs;
Good material compatibility: glass should have a good fit with plastic droppers or silicone gaskets;
Scientific thread design: the thread depth, number of turns and slope must be accurate to ensure that there is no loosening or leakage after tightening.
Shaoxing Roman Plastic Co., Ltd. conducts precise measurement and structural simulation of the technical parameters of the bottle mouth at the early stage of product design. In combination with international standards such as DIN and GPI, it provides customers with a highly adaptable bottle mouth structure that can be compatible with a variety of accessories, ensuring the consistency and sealing safety of the entire packaging system.
Common bottle mouth types and their sealing characteristics
1. Screw Neck
This is the most common bottle mouth type for essential oil glass bottles, which relies on rotation to cooperate with droppers or bottle caps to achieve sealing.
Advantages:
Simple operation and strong adaptability;
Can be used with droppers, nozzles, and pressure pumps;
The seal can be strengthened by adding gaskets, inner plugs, etc.
Risks:
If the bottle mouth thread molding is not accurate, the dropper will be unstable and side leakage will occur;
Excessive or insufficient tightening force will affect the use effect.
Shaoxing Roman Plastic Co., Ltd. has more than 50 injection molding equipment and advanced bottle mouth molding detection systems to ensure that each glass bottle has the best bite between the dropper thread accessories, truly achieving "zero leakage" high-standard sealing performance.
2. Dropper Neck with Tamper-Evident Ring
A bottle neck designed specifically for essential oil products, generally used with glass or silicone droppers, and some also come with tamper-evident rings.
Advantages:
Tightly sealed to prevent secondary opening;
More professional and secure, enhance brand trust;
The dropper head is more tightly combined with the bottle mouth to prevent air from entering the bottle.
Applicable scenarios:
Essential oils containing highly active ingredients;
High-end skin care products, such as essence oils, ampoules, etc.
Shaoxing Roman Plastic Co., Ltd. ensures that the dropper neck design is within ±0.1mm through precision injection molding and multi-point detection processes, thereby ensuring stable and reliable leak-proof and anti-oxidation effects. In particular, the company has mature experience in tamper-evident design, which is widely used in the European and American markets, and has been verified through actual measurements of multiple export products.
Analysis of bottle mouth seal enhancement structure
In addition to the traditional bottle cap tightening method, Shaoxing Roman Plastic Co., Ltd. also improves the performance of the sealing system in the following aspects:
1. Silicone gasket
By adding a food-grade silicone gasket inside the bottle cap, a secondary sealing layer is formed with the bottle mouth to effectively prevent liquid leakage. It is especially suitable for portable products or export high-temperature and high-pressure transportation areas.
2. Aluminum Cap with Plug
Common in high-end aromatherapy essential oil products. After the bottle mouth is equipped with an inner plug, a double closure with a spin-on aluminum cap is added to achieve precise dripping and extremely high sealing.
3. Anti-Backflow Neck
By optimizing the internal structure of the bottle mouth, air is prevented from being sucked back into the bottle, reducing the risk of oxidation of the contents, and is suitable for products containing natural plant oils and highly volatile essential oils.
These seal enhancement structures are completed by the company's independently designed molds, fully supporting OEM/ODM personalized development to meet the product positioning and functional requirements of different customers.