Reinforced Plastic Foam Cup Multi-Layer Wall
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Solution Overview
Problem
Conventional plastic foam cups require storage time for polystyrene to settle, incurring storage costs, and lack both the insulation properties of plastic foam and the tactile feel and graphic printing capabilities of paper-based cups.
Innovation Solution
A reinforced plastic foam cup with a multi-layered tapered side wall comprising a plastic foam layer, adhesive layer, and rigid material layer, along with a method and apparatus for manufacturing this cup by attaching a reinforcing member with a pressure-sensitive adhesive to the cup's tapered side wall, allowing for immediate processing and enhanced tactile feel and graphic printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional plastic foam cups are manufactured using expanded polystyrene beads, then insulation properties are achieved, but storage time is required for the polystyrene to settle, incurring storage costs
Solution Approach 1:
A reinforcing member is attached to the cup during or immediately after the molding process, before the polystyrene beads have a chance to settle. This preliminary reinforcement eliminates the need for subsequent storage time and associated costs, as the cup maintains its dimensional stability throughout production and distribution.
Solution Approach 2:
The cup structure is transformed from a single-material expanded polystyrene foam into a composite structure consisting of the foam layer combined with a reinforcing member (such as paper, plastic, or fabric). This composite construction provides immediate structural stability that prevents dimensional changes, eliminating the settling period requirement.
2Ease of operation
If conventional plastic foam cups are used, then insulation properties are provided, but tactile feel and graphic printing capabilities are lacking
Solution Approach 1:
The cup is constructed as a composite of the expanded polystyrene foam layer and a reinforcing member made of materials such as paper, plastic, or fabric. This combination provides the desirable tactile feel of natural materials while maintaining the superior insulation properties of the foam, creating a multi-functional product that satisfies both aesthetic and performance requirements.
Solution Approach 2:
Different materials are applied to different surfaces of the cup structure. The inner surface maintains the foam material for optimal insulation contact with the beverage, while the outer surface incorporates the reinforcing member with superior tactile properties and graphic printing capabilities. This local differentiation allows each surface to optimize its specific function.
3Strength
If a reinforcing member is attached to the cup, then rigidity and tactile feel are improved, but manufacturing complexity increases
Solution Approach 1:
The reinforcing member is attached to the cup during or immediately after the molding process, before the cup is removed from the mold or cavity. This timing allows the reinforcement to be integrated into the cup structure while the foam is still pliable and the mold provides structural support, simplifying the attachment process and eliminating the need for separate reinforcement operations.
Solution Approach 2:
The reinforcement process is merged with the existing molding operation. The reinforcing member is positioned and attached within the mold cavity along with the foam beads, and both are molded simultaneously or in immediate sequence. This integration combines two processes into one, reducing manufacturing complexity despite the added functional capability.
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 a cost-effective, wrinkle-free, and durable disposable cup with improved rigidity and insulation properties, enabling immediate processing without storage delays and offering high-quality graphics, while reducing storage costs.
Implementation Method 1
A reinforced plastic foam cup with a multi-layered tapered side wall comprising a plastic foam layer, adhesive layer, and rigid material layer
Data Source
AI summary
A reinforced plastic foam cup including a body which defines an open top end and a closed bottom end, wherein the top end has a greater diameter than the bottom end. The body includes a reinforced tapered side wall that extends from the bottom end to the top end. A substantial portion of the reinforced tapered side wall includes a plastic foam layer, a pressure sensitive adhesive layer and a rigid material layer. Such reinforced plastic foam cup provides an improved tactile feel and enhanced insulation and rigidity properties.