Co-Polymer Bar Gun Handle Bonding Without Carcinogenic BPA
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Solution Overview
Problem
Bar guns manufactured from machined acrylic plates using solvent bonding contain Bisphenol A (BPA), posing health risks due to its carcinogenic properties, and alternative bonding methods for co-polymers are needed to ensure safety.
Innovation Solution
A method involving adhesive bonding of co-polymer plates with mechanical interlocks and UV-cured adhesives is used to create a bar gun dispensing head, ensuring strong bond strength and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If solvent bonding process is used to manufacture bar gun from acrylic plates, then manufacturing ease is improved, but carcinogenic BPA is introduced creating health risks
Solution Approach 1:
The patent removes BPA from the material composition by replacing acrylic plates with co-polymer plates that do not contain BPA. This extraction of the harmful substance while maintaining the overall manufacturing process structure resolves the contradiction between ease of manufacture and health safety.
Solution Approach 2:
The patent changes the material parameter from acrylic to co-polymer, which fundamentally alters the chemical composition to eliminate BPA while maintaining compatibility with the solvent bonding process. This parameter change allows continued use of the easy solvent bonding method without the carcinogenic hazard.
2Object-affected harmful factors
If co-polymer plates are used instead of acrylic plates, then carcinogenic BPA is eliminated, but bonding difficulty increases due to high chemical resistivity
Solution Approach 1:
The patent introduces a solvent as an intermediary substance that temporarily reduces the chemical resistivity of co-polymer plates during the bonding process. The solvent acts as a mediator that enables adhesion between co-polymer surfaces, overcoming the high chemical resistivity barrier while allowing the plates to retain their BPA-free properties in the final product.
3Strength
If adhesive bonding is used to bond co-polymer plates, then bond strength is improved, but process complexity increases
Solution Approach 1:
The patent merges the adhesive application step with the existing solvent bonding process, integrating the adhesive function into the bonding operation. By combining these functions, the process achieves enhanced bond strength without proportionally increasing complexity, as the adhesive is applied during the same operational sequence as the solvent bonding.
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 adhesive bonding process with mechanical interlocks provides a carcinogenic-free bar gun with high bond strength and durability, eliminating health risks associated with BPA.
Implementation Method 1
The adhesive used in the present invention may be UV-cured or not UV-cured
Data Source
AI summary
A carcinogenic free bar gun handle having molded individual plates stacked on top of each other and bonded using ultraviolet adhesive. Additional inlets and outlets are machined into the bonded bar gun handle. A series of embossed protrusions and corresponding embossed holes on the plates create machinal fits between the respective plates which increases the strength of the bar gun holder.