Polypropylene Polyethylene Cosmetic Packaging Welding
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Solution Overview
Problem
Existing packaging devices for cosmetic and similar products are heavy, costly, complex to manufacture, and require a large amount of material, making them environmentally unfriendly and difficult to recycle, while also being prone to leaks and not easily sterilizable.
Innovation Solution
A packaging device comprising a receptacle body and dispensing head welded together, where one is made of polypropylene and the other a mixture of polypropylene and polyethylene, reducing material usage and weight, improving weld quality, and allowing for easy recycling and sterilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an intermediate piece is provided between receptacle and dispensing head for fastening, then the device achieves secure assembly, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the receptacle and dispensing head into a single integrated structure made from the same polyethylene material, eliminating the need for separate intermediate fastening pieces. The dispensing head is formed as an integral part of the receptacle body through a single molding process, thereby reducing component count while maintaining assembly security.
2Reliability
If receptacle and dispensing head are produced from different materials (polyethylene and polypropylene), then material compatibility is achieved, but manufacturing cost and complexity increase
Solution Approach 1:
The patent employs homogeneity by producing both the receptacle and dispensing head from the same polyethylene material. This single-material approach eliminates material incompatibility issues while simplifying the manufacturing process, reducing the number of material types needed, and lowering production costs compared to multi-material constructions.
3Reliability
If multiple materials are used in the packaging device, then specific functional properties are achieved, but the amount of material and weight increase
Solution Approach 1:
The patent uses a single polyethylene material for both the receptacle and dispensing head, eliminating the need for additional polypropylene components. This homogeneous material approach reduces the total material consumption by approximately 50% and significantly decreases the device weight while maintaining all necessary functional properties through optimized polyethylene formulation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution results in a lightweight, cost-effective, and environmentally friendly device that is easy to manufacture, aesthetically appealing, leak-proof, and capable of withstanding sterilization, while reducing material consumption by approximately 50%.
Implementation Method 1
a receptacle body and a dispensing head welded onto this body
Data Source
AI summary
The invention relates to a device for packaging and dispensing a product, particularly a cosmetic product, including a body of a receptacle, a dispensing head welded onto the body, one of the body and the head including a layer of a mixture of polypropylene and polyethylene, the other being constituted of polypropylene.