Coreless Paper Roll Dispensing with Captive Conical Roll Support
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Solution Overview
Problem
Existing dispensing systems for coreless rolls of absorbent products, such as toilet paper or paper towels, incur additional costs and waste due to the need for specialized end caps or grooves that are not essential to the user, leading to inefficiencies in manufacturing and increased waste when the roll is finished.
Innovation Solution
A dispensing system where the guiding and positioning element features a conical or truncated conical portion with a decreasing cross section, allowing the roll to be securely held without additional elements, and a method to manufacture rolls with axially deformed sides to match the dispenser's housing, ensuring a captive fit without extra components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If specialized end caps or grooves are added to make the dispenser and roll captive, then the reliability of the dispensing system is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The invention extracts the captive mechanism from separate end caps or grooves and integrates it directly into the roll structure itself. The housing formed in the roll's lateral face provides the captive function without requiring additional detachable elements, thus reducing device complexity while maintaining reliability.
Solution Approach 2:
The invention merges the captive function with the roll's housing structure. By forming a housing directly in the lateral face of the roll that interacts with the dispenser's guiding element, the captive mechanism is combined with the roll's existing structure, eliminating the need for separate end caps or grooves.
2Reliability
If specialized end caps or grooves are added to make the dispenser and roll captive, then the reliability of the dispensing system is improved, but the loss of substance increases due to waste
Solution Approach 1:
The invention removes the need for separate end caps or grooves by extracting the captive function and integrating it into the roll's housing. This eliminates the material waste associated with manufacturing and discarding additional elements after the roll is finished.
Solution Approach 2:
By merging the captive function with the roll's housing structure, the invention ensures that all elements remain usable throughout the roll's lifecycle. The housing is an integral part of the roll that serves its function throughout use, eliminating waste from separate disposable components.
3Reliability
If grooves are added to the roll sides to interact with special supports, then the reliability of the dispensing system is improved, but the ease of manufacture decreases due to complex conversion installations
Solution Approach 1:
The invention merges the captive function with the roll's housing structure, forming a housing directly in the lateral face of the roll. This integrated approach simplifies manufacturing by eliminating the need for complex conversion installations required to create separate grooves, while maintaining reliable captive functionality.
Data Source
AI summary
A system for dispensing a strip of absorbent product in a coreless roll, of the type including a roll and a dispenser for dispensing the absorbent product, of the type including a first guiding and positioning element which can be received in a first housing of the roll and including a second holding element which can be received in a second housing of the roll, wherein the first guiding and positioning element includes a portion of revolution with a cross section decreasing towards the inside of the dispenser, which can be received in the first associated housing of the roll.