Sachet Packaging Machine Cooling Channels
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Solution Overview
Problem
Existing sachet packaging machines fail to effectively prevent overheating and maintain temperature control during the packaging process, leading to defective products and increased waste.
Innovation Solution
The sachet packaging machine incorporates thermally insulating inserts with cooling channels to control temperature near the heat-sealing zones, using counter-rotating rollers with heating elements and a refrigerant fluid to prevent overheating and ensure precise heat sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If cooling systems are used to prevent overheating, then material damage from burning is reduced, but temperature control precision during heat sealing is insufficient
Solution Approach 1:
The patent applies local quality by providing individual cooling channels for each heating element in the heat sealing unit. Each heating element has its own dedicated cooling channel that can be independently controlled, allowing precise temperature management at each sealing location rather than using a general cooling system. This enables different temperature controls for different sealing zones, achieving both overheating prevention and precise temperature control.
Solution Approach 2:
The patent implements feedback control through temperature sensors positioned near each heating element that continuously monitor the temperature and provide feedback to control the cooling fluid flow. This closed-loop feedback system allows real-time adjustment of cooling intensity to maintain precise temperature control during heat sealing while preventing material damage from overheating.
2Strength
If heat sealing is performed to seal sachets, then packaging integrity is achieved, but material overheating and burning occur
Solution Approach 1:
The patent uses cooling channels as an intermediary element between the heating elements and the sachet material. The cooling fluid circulating through these channels acts as a mediator that absorbs excess heat from the heating elements, preventing direct heat transfer to the material that would cause burning, while still allowing sufficient heat to reach the material for proper sealing through the heating element contact zones.
Solution Approach 2:
The patent applies preliminary anti-action by pre-cooling the heating elements through circulating cooling fluid before and during the heat sealing process. This preliminary cooling action counteracts the excessive heat that would otherwise be transferred to the material, preventing burning while maintaining enough heat for effective sealing. The cooling system is activated in advance to prepare the heating elements for controlled heat transfer.
3Manufacturing precision
If cooling channels are added to heating elements, then temperature control is improved, but device complexity increases
Solution Approach 1:
The patent merges the heating and cooling functions into a single integrated heat sealing unit structure. The cooling channels are embedded within the heating element housing, combining two separate systems (heating elements and cooling system) into one unified component assembly. This integration reduces overall device complexity compared to having separate heating and cooling units, while maintaining precise temperature control 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
This solution effectively prevents overheating, reduces waste, and enhances product accuracy by maintaining precise temperature control during the packaging process, ensuring high-quality sachets are produced.
Implementation Method 1
said cooling means comprises a pair of cooling channels (50) arranged to flank said heating elements (32) circumferentially, said cooling channels (50) being in fluid passage connection with one another
Implementation Method 2
using counter-rotating rollers with heating elements and a refrigerant fluid to prevent overheating
Implementation Method 3
sealing is done by heat sealing or, in some cases, by compression of an adhesive
Implementation Method 4
sealing unit (3) comprises a pair of heating elements (32) arranged to contact said pair of sheets (10)
Implementation Method 5
said inserts (5) being made of a thermally insulating material which reduces heat diffusion from said heating elements (32)
Data Source
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AI summary
A sachet packaging machine (1) suitable for producing filled sachets (100) comprising sealed sachets (101) containing a product (102), the sachet packaging machine (1) being at least configured to convert at least one pair of sheets (10) into sachets (101), to insert the product (102) into the sachets (101) so as to obtain filled sachets (100), the sachet packaging machine (1) comprising at least: a handling unit (2), suitable for handling the sheets (10) along a feed direction (2a); a sealing unit (3) suitable for performing a sealing operation of the sheets (10) so as to obtain each of the sachets (101), and comprising at least a first heat-sealing device (30) suitable for sealing the sheets (10) along an axis (3a) by making a heat sealing (103); the heat-sealing device (30, 33) comprising at least one heating element (32) suitable for contacting the sheets (10) and making a heat sealing; each of at least one heating element (32) defining a contact surface (300) suitable for coming into contact with the sheets (10) to accomplish the heat sealing (103), the heat sealing (103) being coincident with the portion of the sheets (10) coming into contact with the contact surface (300); a filling unit (4) suitable to inserting the product (102) into each of the sachets (101); at least one insert (5) located adjacent to each contact surface (300) and configured to reduce heat diffusion from the heating element (32) to the sheets (10); each insert (5) includes a cavity (50) internal to the insert (5) and suitable for letting a refrigerant fluid pass through it.