Hot Glue Application and Drying System for Packaging Machines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current packaging machines cannot efficiently package facial tissues or toilet paper rolls in both PVC foil and paper using both full wrapping and bending without prior technical adjustments, leading to high raw material costs and machine contamination.
Innovation Solution
A device and method for applying, drying, and activating hot glue within the packaging machine, featuring U-shaped consoles for glue application and drying, and heaters for thermal activation, allowing for continuous or discontinuous glue application on both sides of the paper, integrated with the machine's CPU for electronic control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hot glue is applied to the entire surface of paper for packaging, then adhesion strength is improved, but raw material costs increase significantly
Solution Approach 1:
The patent applies hot glue only in specific bending areas of the paper packaging rather than the entire surface. The glue application device is positioned to deposit adhesive precisely where paper folding and sealing are required, reducing glue consumption and raw material costs while maintaining sufficient adhesion strength for package integrity.
2Strength
If hot glue is applied in liquid state before paper bending, then adhesion is achieved, but machine contamination occurs during transport
Solution Approach 1:
The patent applies hot glue and then immediately dries it before the paper bending operation. The drying device evaporates the solvent from the liquid glue, converting it to a dry state that will not contaminate the machine during subsequent transport and folding operations, while still maintaining adhesion capability when activated.
Solution Approach 2:
The patent replaces the traditional approach of applying and immediately sealing liquid glue with a system that applies glue, dries it, and then activates it during the sealing process. This substitution of the drying step eliminates the contamination problem associated with transporting liquid or semi-liquid adhesive through the packaging machine.
3Adaptability or versatility
If packaging machines are modified to handle both PVC foil and paper packaging, then versatility is improved, but device complexity increases
Solution Approach 1:
The patent designs a glue application and drying system that can handle both PVC foil and paper packaging materials using the same machine. The device is configured to apply and dry hot glue in a manner that works for both material types, allowing the packaging machine to switch between different packaging materials without requiring separate dedicated equipment for each material type.
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
Enables efficient packaging of facial tissues and toilet paper rolls in both paper and PVC foil using the same machine, reducing raw material costs and preventing machine contamination by applying glue only where necessary, with minimal operational adjustments.
Implementation Method 1
devices for drying the glue which are placed on the same console at the front end of the machine
Implementation Method 2
a heater for activating the dried glue, depending on the package, in the horizontal and vertical direction of the packaged product
Data Source
AI summary
The invention relates to a device for, and method of, applying, drying and activating hot glue on the packaging machine itself. In the case of the basic option, the device works as follows: two assemblies (1) for applying and drying glue are positioned on the plates (3) of machine (M). Assemblies (1) are made up of consoles (11) mounted in a way that enables them to slide and move, their front end on the lever (32) and their rear end on the shaft (31) attached between two plates (3). The lever (32) is attached, by way of levers (33), between the plates (3). One device (12) for applying hot glue is attached to the consoles (11), just above the lever (32), while a number of fans (13) are fastened along the console (11), above the device (12), as well as on the opposite side. The heater (4) is horizontally attached to the carrier (42) and positioned in the opening (43) on the plate (41). The strip heater (7) is made up of an endless strip (71) and vertical heaters (72). In the case of the basic option, the method of applying, drying and activating hot glue on the packaging machine itself consists of the following: paper (5) from the roll (51) is introduced under the consoles (11). The devices (12) apply hot glue to the top side of the paper in a continuous strip (61) and a discontinuous strip (62). Strips of glue (61, 62) are dried by fans (13) and further transported through the machine (M), together with the paper (5). Once the product is packaged, packages reach a horizontal heater (4) which activates the glue (61, 62) on the bottom side of the package, after which product packages pass between vertical heaters (72) which activate the glue on the sides of packages.