Paper-Plastic Flip Packaging Box with Integrated Injection-Molded Frame
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Paper packaging boxes face limitations in edge sealing and shape versatility, restricting their application, while existing plastic packaging boxes are not environmentally friendly and inefficient in plastic usage.
Innovation Solution
A paper and plastic combined packaging box design where cardboard is wrapped with plastic on a tangent plane for sealing, and an integrated plastic frame is used to connect cardboard components, allowing for various shapes and enhanced strength with reduced plastic usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If paper packaging boxes are used, then environmental friendliness is improved, but edge sealing performance deteriorates
Solution Approach 1:
The patent combines paper/cardboard material with plastic material to create a composite packaging box. The paper body provides environmental friendliness while the plastic frame and sealing strips provide the necessary sealing performance, thus resolving the contradiction between environmental friendliness and sealing reliability.
2Object-affected harmful factors
If paper packaging boxes are used, then environmental friendliness is improved, but shape versatility deteriorates
Solution Approach 1:
The plastic frame component can be injection-molded into various shapes while maintaining the paper body's environmental friendliness. This composite structure allows the packaging box to achieve diverse shapes and elegant appearances without compromising environmental benefits.
3Reliability
If plastic is used to wrap cardboard, then sealing performance is improved, but plastic usage quantity increases
Solution Approach 1:
Instead of wrapping the entire cardboard box with plastic, the patent applies plastic only to critical areas: the frame structure and sealing strips at the edges. This localized application provides sufficient sealing performance while minimizing plastic consumption.
Solution Approach 2:
The patent uses a partial amount of plastic material strategically positioned where it is most needed for sealing and structural support, rather than applying plastic uniformly across the entire surface. This partial action achieves the required sealing effect with reduced material usage.
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 provides high sealing performance, versatility in shape, increased strength, cost savings, and improved environmental sustainability by protecting cardboard from moisture and allowing for elegant designs with minimal plastic.
Implementation Method 1
On a tangent plane, the cardboard is wrapped by plastic, such that the cardboard is not moistened by fluid
Implementation Method 2
US 3119540 A relates to a thin-walled object produced by injection moulding of a plastic polymer wherein the object has a low average wall thickness while having a high rigidity to weight ratio
Implementation Method 3
the packaging box is also sealed by the plastic member (fastening connection between the upper edge plastic member and the box cover plastic member)
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a paper and plastic combined packaging box, which is flip-type packaging box, comprising a box cover cardboard, a box body cardboard portion and an integrated plastic frame formed by injection molding. The box body cardboard portion is formed as an enclosure by a plurality of cardboards, and has an upper edge. The integrated plastic frame formed by injection molding is configured to connect the box cover cardboard and the box body cardboard portion. The integrated plastic frame is comprised of a box body plastic member and a box cover plastic member which are connected through a plastic hinge. The box body plastic member is comprised of a main body of box body plastic member arranged at a gap between cardboards of the box body cardboard portion and an upper edge plastic member which is wrapped at the upper edge of the box body cardboard portion. The box cover plastic member is wrapped at the periphery of the box cover cardboard. The upper edge plastic member and the box cover plastic member are in a fastening connection to implement sealing of the packaging box. Compared with the prior art, the invention saves plastic, has high strength, high tightness and various shapes, and is low in cost.