Wholesale Plastic Airless Bottle Manufacturers

How to design plastic airless bottles to minimize product waste

Understand the core advantages and challenges of plastic airless bottles
The biggest advantage of plastic airless bottles is their "airless" design. Through the vacuum pump mechanism, the product can be pushed out evenly and almost without residue, avoiding the phenomenon of a large amount of unused product remaining in the traditional hose or bottle. This not only improves the user experience, but also effectively prevents the oxidation and deterioration of the product.
However, if the design fails to reasonably optimize the pump head structure, bottle body capacity and internal flow channel, it may still cause product residue, pump head blockage or inconvenience in use, and ultimately cause waste. Therefore, how to scientifically design every detail becomes the key to improving the performance of vacuum bottles.
Key strategies for designing plastic airless bottles to reduce product waste
Optimize pump head and valve design
As the core component of the product, the pump head has a direct impact on the product discharge efficiency. Shaoxing Roman Plastic uses precise fluid mechanics simulation to design a low-residue, high-response valve structure to ensure that the product in the bottle can be fully squeezed out. The valve material is made of wear-resistant and excellent sealing silicone or TPR material to avoid waste caused by pump head blockage or leakage.
Scientifically design the shape and capacity distribution of the bottle bottom
The bottom of the bottle is usually the "dead corner" where the product remains. Our company adopts an ergonomic and fluid-dynamic inclined bottom design to enable the liquid to flow smoothly to the pump head. At the same time, by reasonably configuring the bottle body capacity, it is ensured that the product can be fully matched with the pump head after filling, avoiding the product from being unable to be fully used due to excessive space.
Adopting high-precision injection molding technology
Shaoxing Roman Plastic has more than 50 advanced injection molding machines, which can ensure high-precision matching between the bottle body and the pump head. Precise mold manufacturing and injection molding technology ensure small part size tolerances and strong sealing performance, reducing air entry and product leakage caused by assembly errors, thereby reducing waste.
Surface treatment technology improves functionality
Surface spraying, UV coating and thermal transfer technologies not only improve the aesthetics of vacuum bottles, but also enhance the anti-slip and anti-pollution properties of materials, reduce product leakage and pollution risks, and indirectly avoid product waste caused by external factors.
Internal flow channel optimization design
The bottle body is equipped with a special guide groove to facilitate the smooth flow of high-viscosity or easy-to-clump products without clogging the pump head, ensuring that users can take out evenly every time they press, and eliminating residual waste caused by poor flow.
Material selection and environmental considerations
Shaoxing Roman Plastic not only pays attention to product performance, but also pays more attention to environmental protection. The company uses recyclable and safe plastic materials, and is committed to the development of degradable plastic airless bottles to provide customers with green packaging solutions, helping to reduce environmental burden while reducing product waste.

How plastic airless bottles adapt to products with different viscosities

Design challenges of plastic airless bottles: adaptation requirements of products with different viscosities
Product viscosity is an important factor that determines the difficulty of designing packaging vacuum bottles. Low-viscosity liquids such as toners and essences have strong fluidity and are easy to pump out; while high-viscosity products such as creams, gels and creams have poor fluidity and are easily retained in the pump head or bottle body, affecting user experience and product integrity. Therefore, plastic airless bottles must be structurally optimized for different viscosities to achieve smooth, efficient and residue-free product use.
Technical advantages of Shaoxing Roman Plastic Co., Ltd.
Founded in 2016, Shaoxing Roman Plastic Co., Ltd. is located in Shangyu, Zhejiang, adjacent to Ningbo and Shanghai ports. It covers an area of ​​13,000 square meters, has more than 100 employees, equipped with more than 50 injection molding machines and more than 15 assembly and packaging production lines. The company focuses on the design and manufacture of plastic packaging and cosmetic tools, has strong R&D and customization capabilities, and can provide customized vacuum bottle solutions for the special viscosity requirements of customer products.
Design points for plastic airless bottles to adapt to products with different viscosities
Pump head structure optimization
For low-viscosity products, the focus of pump head design is to control the stability of output flow to avoid splashing and leakage. Shaoxing Roman Plastic uses a delicate valve control system to ensure uniform product flow.
For high-viscosity products, the pump head structure is more complex, and the pump chamber volume and valve channel need to be expanded, while the thrust of the pump head is increased. Through multiple rounds of simulation and actual measurement, the company's R&D team has designed a pump head with a larger flow section and enhanced sealing performance to ensure smooth pumping of thick pastes and avoid blockage and residue.
Internal flow channel design of the bottle
High-viscosity products tend to stay at the bottom and wall of the bottle, affecting the efficiency of product use. Shaoxing Roman Plastic adopts a slanted bottom design and internal guide grooves to promote the product to flow evenly to the pump head and reduce residue. For low-viscosity products, a smooth inner wall is used to reduce friction resistance and improve fluidity.
Material selection and elasticity control
The pump head seal ring of elastic materials is also crucial for the adaptability of products with different viscosities. Shaoxing Roman Plastic selects sealing materials such as silicone and thermoplastic rubber (TPR) according to product characteristics, taking into account corrosion resistance and elasticity to ensure no leakage and deformation during long-term use.
Precise injection molding process ensures part accuracy
Relying on more than 50 high-precision injection molding machines owned by the company, the dimensional tolerances of various components of the plastic airless bottle are strictly controlled to ensure that the pump head and the bottle body fit closely, improve pumping efficiency and sealing, and avoid air entry or product backflow due to gaps, which is especially important for high-viscosity products.
Surface treatment technology enhances functionality
Shaoxing Roman Plastic provides various surface treatment technologies such as spraying, UV coating, screen printing, hot stamping and labeling, which not only enhance the aesthetics of packaging, but also improve the feel of the bottle, enhance the comfort and convenience of user operation, especially when using more viscous products, the anti-slip design effectively reduces misoperation.