Plastic Roll on Bottle 50ml Cosmetic and Medical Screw Cap

1.Appearance and Design

• Volume design: The 50ml Plastic Rolling Bottle, which can be used as both a Cosmetic Rolling Bottle and a Rolling Bottle with Medical Screw Cap, features a 50 ml capacity that is just right. It's neither too large to be inconvenient to carry nor too small to meet the needs of a certain period of use. In the realm of cosmetics, for products like commonly used facial serums, eye serums, and body lotion samples in a Cosmetic Rolling Bottle, 50 ml generally meets the consumer's normal use for about 7 to 15 days (the exact duration depends on the usage frequency and single - use amount). In the medical field, for topical ointments and salves in a  Cap, such as those for skin inflammation and disinfectant salves, the 50 ml packaging ensures that patients don't need to frequently change containers during a treatment course, offering more convenience.

• Bottle shape: The 50ml Plastic Rolling Bottle, applicable as a Cosmetic Rolling Bottle and a Rolling Bottle , is usually designed with simple and smooth lines, mostly cylindrical or slightly curved. This ergonomic shape provides a comfortable grip whether it's for hand - held application of cosmetic products in a Cosmetic Rolling Bottle or for patient self - administration in medical scenarios using a Rolling Bottle. It's also easy to hold and operate for those with weak hand strength, like the elderly or children.

• Screw cap design: The screw cap of the 50ml Plastic Rolling Bottle, which is a key feature in both the Cosmetic Rolling Bottle and the Rolling Bottle , fits tightly into the bottle and opens and closes by rotation. This design offers a great seal and effectively stops the liquid inside the bottle from leaking, evaporating, or being contaminated by the outside. Even when the bottle is crushed or bumped during daily carrying, the screw cap in a Rolling Bottle with Medical Screw Cap or Cosmetic Rolling Bottle ensures the safety of the contents. Additionally, the screw cap design allows the user to easily control the opening and closing force, making product access convenient.

2.Material Characteristics

• Choice of plastic material: The main body of the 50ml Plastic Rolling Bottle, be it a Cosmetic Rolling Bottle or a Rolling Bottle with Medical Screw Cap, is made of high - quality plastic, typically polyethylene (PE) or polypropylene (PP). These plastics possess excellent chemical stability. They hardly react with the diverse chemical components in cosmetics within a Cosmetic Rolling Bottle, such as moisturizers, fragrances, and active skin - care ingredients, and also don't interact with the pharmaceutical ingredients in medical supplies in a Rolling Bottle with Medical Screw Cap, like antibiotics, hormonal drugs, and disinfecting and sterilizing substances. This guarantees that the products' quality and efficacy remain unaffected.

• Physical Property Advantage: PE and PP materials used in the 50ml Plastic Rolling Bottle, relevant for both the Cosmetic Rolling Bottle and the Rolling Bottle with Medical Screw Cap, have good strength and toughness. They can endure a certain degree of extrusion and collision. During transportation and use, even if the bottle is accidentally dropped or hit by external forces, it's not prone to rupture, effectively safeguarding the safety of the product inside the bottle, regardless of whether it's a Cosmetic Rolling Bottle or a Rolling Bottle with Medical Screw Cap. Moreover, these plastic materials are lighter in weight compared to glass - based packaging. This significantly reduces the carrying burden, whether it's consumers traveling with cosmetics in a Cosmetic Rolling Bottle or patients on the way to the doctor with medical supplies in a Rolling Bottle with Medical Screw Cap.

• Health and safety: The 50ml Plastic Rolling Bottle, used as a Cosmetic Rolling Bottle and a Rolling Bottle with Medical Screw Cap, must adhere to strict health and safety norms. These plastic materials are non - toxic, odorless, and don't release harmful substances, ensuring skin - contact safety. During the production process, they undergo strict quality checks and hygienic treatments to prevent microbial contamination and protect the health of users, whether they are using it for cosmetic or medical purposes.

3.Rolling head design

• Rolling head material: The rolling head of the 50ml Plastic Rolling Bottle, in both the Cosmetic Rolling Bottle and the Rolling Bottle with Medical Screw Cap, is typically made of stainless steel or high - quality plastic. A stainless - steel rolling head in a Cosmetic Rolling Bottle or a Rolling Bottle with Medical Screw Cap has good abrasion resistance and corrosion resistance, maintaining a smooth surface over time to ensure the product is evenly and smoothly rolled onto the skin. Plastic rolling heads, on the other hand, are more cost - effective and lighter, while still fulfilling the basic rolling and application functionality requirements in both types of bottles.

• Smooth rolling: The rolling head design of the 50ml Plastic Rolling Bottle, applicable to the Cosmetic Rolling Bottle and the Rolling Bottle with Medical Screw Cap, is carefully optimized for a smooth surface and a secure, flexible connection to the bottle. When the user rolls the bottle, the rolling head rotates smoothly, evenly applying the cosmetic or medical product inside the bottle to the skin. Whether it's a thick emulsion in a Cosmetic Rolling Bottle or a thin lotion in a Rolling Bottle with Medical Screw Cap, the rolling head enables precise control of the application amount, avoiding waste and uneven application.

• Hygienic protection: When not in use, the rolling head of the 50ml Plastic Rolling Bottle, in the Cosmetic Rolling Bottle and the Rolling Bottle with Medical Screw Cap, can create a certain sealing effect by closely fitting to the bottle, preventing dust, bacteria, and other contaminants from entering. Some rolling bottles are also equipped with dust caps, further enhancing the hygiene protection. During use, the rolling head is in direct contact with the skin. Compared to traditional application methods, it reduces the product's contact area with the outside world, lowering the risk of bacterial growth, making it more hygienic and safe for both cosmetic and medical applications.