Wrapped rice
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Solution Overview
Problem
Conventional rice wrappers find it difficult to accurately form a conical shape with a constant apex angle, making it challenging to position the components correctly and maintain consistency in the wrapping process.
Innovation Solution
The rice wrapper design includes a rectangular outer film with a band-shaped separable part, overlapping inner films, and positioning marks to facilitate the formation of a deformed conical shape, where one corner is wound as an inner part and the other side is rolled as an outer part, with specific marks ensuring a consistent apex angle between 42-50 degrees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the rice wrapper is formed into a conical shape by placing corner parts and rolled parts according to conventional methods, then the wrapping structure can be formed, but it is very difficult to visually accurately position the members, causing displacement and making it difficult to form a conical shape with a constant apex angle
Solution Approach 1:
Positioning marks are provided on the outer film at specific positions before the wrapping operation. These marks indicate where corner parts and rolled parts should be placed, allowing operators to accurately form the conical shape with a constant apex angle without requiring complex visual positioning during the wrapping process
Solution Approach 2:
The positioning marks are visually distinct features on the outer film that provide clear visual guidance for positioning. The marks enable operators to easily identify and align the correct positions for corner and rolled parts, ensuring consistent apex angle formation across multiple wrappings
2Ease of operation
If the outer film is divided into two sections by a separable part, then the wrapper can be easily removed after wrapping, but the inner films must be previously separated and positioned correctly on each section
Solution Approach 1:
The outer film is divided into two sections by a separable part, allowing the wrapper to be easily removed after wrapping. Each section has inner films connected to it, and the separable part can be pulled to divide the outer film and release the wrapped food, enabling easy disposal of the wrapper
Solution Approach 2:
The inner films are connected to the outer film at specific positions, merging the functionality of multiple components. The inner films are positioned on the outer film such that when the separable part is pulled, the entire wrapper structure can be easily separated and removed
Data Source
AI summary
A rice wrapper having a rectangular shape is formed into a deformed conical shape having an apex formed by an intermediate part of one long side, the deformed conical shape is formed by: rolling a part forming one corner part located between one short side and the one long side as an inside rolled part in such a way that the one corner part is placed at an intermediate part of the opposite other long side; rolling a part on the other short side over the inside rolled part as an outside rolled part; and fixing the outside rolled part onto the inside rolled part. The rice wrapper has an outer film provided with a first mark for positioning the part on the other short side which is rolled as the outside rolled part when the deformed conical shape is formed.