Coreless Stretch Film Dispenser Elastic Compression
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Solution Overview
Problem
Conventional dispensers for coreless stretch film rolls are unable to firmly mount the film, leading to clumping and damage of the inner layers due to friction and pressure, and are inflexible in accommodating varying diameters, resulting in wastage and higher manufacturing costs.
Innovation Solution
A reusable dispenser with a hollow cylindrical body featuring an elongated slit, allowing for compression to fit snugly into the film roll, providing firm mounting and maintaining adhesive integrity of the last film layers through elastic materials like PVC or resilient plastics, which can accommodate various diameters and types of rolls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional dispenser is used for coreless stretch film roll, then the dispenser structure is simple, but the film layers toward the inner end of the roll get clumped and damaged due to loose mounting and friction
Solution Approach 1:
The dispenser uses a flexible hollow cylindrical body made of elastic material that can be compressed and expanded. This flexible structure allows the dispenser to conform to the inner circumference of coreless film rolls of varying diameters, providing firm mounting without clumping or damaging the film layers, while maintaining structural simplicity
Solution Approach 2:
The dispenser's diameter is changed dynamically through compression and expansion. When compressed, the diameter decreases to fit into the film roll opening; when expanded, it firmly mounts onto the inner wall. This parameter change enables the same simple structure to adapt to different film roll sizes and provide reliable film layer support
2Adaptability or versatility
If a conventional rigid dispenser is used, then the manufacturing cost is high and the structure is complex, but it cannot accommodate varying diameters of coreless film rolls
Solution Approach 1:
The dispenser transitions from a static rigid structure to a dynamic flexible structure that can change its diameter. The elastic material allows the dispenser to be compressed to fit into film rolls of different sizes and then expand to firmly mount, providing adaptability without requiring multiple sizes or complex adjustment mechanisms
Solution Approach 2:
The hollow cylindrical body is made of flexible elastic material that can deform elastically. This flexible shell structure enables the dispenser to accommodate varying diameters of coreless film rolls by compressing during insertion and expanding to provide firm mounting, eliminating the need for complex adjustable mechanisms
3Reliability
If a conventional dispenser is used, then the structure is simple, but the inner layers of film get damaged due to friction and pressure when pressed loosely
Solution Approach 1:
The flexible elastic body conforms to the inner circumference of the film roll, distributing pressure evenly across the surface. This prevents localized high pressure and friction that would damage the film layers, while still providing firm mounting to prevent clumping and damage during dispensing
Solution Approach 2:
The elastic material of the dispenser acts as a cushioning element between the dispenser structure and the film layers. This beforehand cushioning protects the film from damage by absorbing and distributing the pressure and friction forces, preventing harm before it occurs to the film layers
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 dispenser effectively prevents clumping and damage of the last film layers, ensuring efficient unwinding and accommodating different diameters, reducing wastage and manufacturing costs while maintaining the integrity of the film roll.
Implementation Method 1
the hollow cylindrical body is made of stabilised polyvinyl chloride (PVC), metal, any resilient plastic material, rubber, rubberised fabric, cork or any material having elastic characteristic
Implementation Method 2
the outer wall in which at least one of the left or right portion is compressed for slotting into an opening of the film roll, such that the outer wall mounts firmly onto inner wall of the opening for grasping the surface of inner sheet of the film roll during dispensing
Data Source
AI summary
The present disclosure relates to an apparatus (100) or a reusable dispenser adaptable for mounting coreless stretch film (106) comprising a hollow cylindrical body (101) with at least one elongated slit (102) along the length of the cylindrical body wherein, the body has a right portion (107a) and a left portion (107b), and an outer wall (104) in which at least one of the left or right portion (107a, 107b) is compressed for slotting into an opening of the film roll (106), such that the outer wall (104) mounts firmly onto inner wall (105) of the opening for grasping the surface of inner sheet of the film roll during dispensing.