Degradable Packaging Box With Folded Sheets and Molded Buckles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing plastic packaging boxes face material shortages during integrated injection molding due to poor flowability, particularly at thin parts, leading to defects and inefficiencies.
Innovation Solution
A novel packaging box structure and production process that utilizes degradable materials, such as PLA, combined with film and injection molding, to form a cover body and box body with integrated buckle parts and angle frames, ensuring seamless connections and avoiding material shortages through specific molding conditions and reinforcing ribs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If integrated injection molding is used for thin-walled packaging boxes, then manufacturing efficiency is improved, but material shortage occurs at thin parts due to poor flowability
Solution Approach 1:
The packaging box is divided into multiple components: a box body made from folded sheet material and separate buckle parts formed by injection molding. This segmentation allows the thin-walled box body to be formed without material shortage issues during injection molding, while the buckle parts can be separately optimized for strength and connectivity.
Solution Approach 2:
The sheet material is pre-formed and folded into the box body structure before the injection molding of buckle parts. This preliminary action creates the thin-walled structure first, then the buckle parts are injected molded to connect to it, ensuring proper material distribution and avoiding short shots.
2Loss of substance
If wall thickness is reduced to save material, then material usage is decreased, but injection molding flowability becomes poor causing defects
Solution Approach 1:
The packaging box is divided into multiple components: a box body made from folded sheet material and separate buckle parts formed by injection molding. This segmentation allows the thin-walled box body to be formed without material shortage issues during injection molding, while the buckle parts can be separately optimized for strength and connectivity.
Solution Approach 2:
The box body is constructed using thin-walled sheet material (50-100 decimillimeters) that is folded and sealed to form the container. This thin-film approach reduces material usage while maintaining structural integrity through the folding and sealing process rather than relying on thick injection-molded walls.
3Object-affected harmful factors
If degradable materials like PLA are used, then environmental friendliness is improved, but injection molding flowability deteriorates
Solution Approach 1:
The packaging box is divided into multiple components: a box body made from folded sheet material and separate buckle parts formed by injection molding. This segmentation allows the thin-walled box body to be formed without material shortage issues during injection molding, while the buckle parts can be separately optimized for strength and connectivity.
Solution Approach 2:
The packaging box uses a composite construction combining degradable sheet material (PLA or similar) for the box body with injection-molded buckle parts. This composite approach allows the use of environmentally friendly materials while maintaining manufacturability through separate processing steps that accommodate the flowability limitations of degradable plastics.
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 achieves a degradable packaging box with seamless connections and minimal material waste, maintaining the appearance quality of traditional plastic products while using thinner walls and reducing material usage.
Implementation Method 1
the first buckle part is formed by injection molding at the edge of the surface of the cover sheet material; the second buckle part and the angle frames are integrally formed by injection molding
Implementation Method 2
the box sheet material includes a bottom surface and four side surfaces connected to the bottom surface; the box sheet material is formed into a box by folding four side surfaces
Implementation Method 3
after forming, a surface of the first buckle part is fused together with a circumferential edge of the cover sheet material
Implementation Method 4
four corners of the box are fixed and sealed through the angle frames; the bottom frame is fused together with bottom edges of end portions of two corresponding adjacent side surfaces and edges of the corresponding fillets of the bottom surface to seal junctions of the four corners
Data Source
AI summary
The present disclosure relates to a novel packaging box. The novel packaging box includes a cover body and a box body; the cover body is detachably buckled with the box body; the cover body includes a cover sheet material and a first buckle part; the first buckle part is formed by injection molding at the edge of the surface of the cover sheet material; the box body includes a box sheet material, a second buckle part, and angle frames; the box sheet material includes a bottom surface and four side surfaces connected to the bottom surface; the box sheet material is formed into a box by folding four side surfaces; four corners of the box are fixed and sealed through the angle frames; an edge of an opening part of the box are connected to the second buckle part; the second buckle part is connected to the various angle frames.