SEBS Hot Melt Adhesive Granules for Synthetic Stopper Bonding
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Solution Overview
Problem
Existing hot melt adhesives struggle to effectively bond synthetic stoppers to capsules due to low surface tension, especially at low temperatures, and are difficult to produce in granules or pearls form for automated application.
Innovation Solution
A hot melt adhesive composition based on styrene-ethylene-butadiene-styrene block copolymers (SEBS) is formulated in granules or pearls form, incorporating resin, wax, and antioxidant components to enhance adhesion and processability, allowing for automated application and effective bonding at low temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hot melt adhesive is applied to bond synthetic stoppers to capsules, then adhesion is achieved, but adhesion strength deteriorates at low temperatures due to low surface tension of synthetic materials
Solution Approach 1:
The patent modifies the chemical composition parameters of the hot melt adhesive by incorporating specific additives (waxes, resins, and other polymers) in optimized ratios. This changes the adhesive's physical and chemical properties to maintain flexibility and bonding capability at low temperatures, directly addressing the temperature-dependent adhesion failure
Solution Approach 2:
The patent creates a composite adhesive formulation combining multiple polymer types (including polyolefins, polyesters, and other copolymers) with waxes and resins. This composite structure leverages the complementary properties of each component to achieve both strong initial adhesion and sustained low-temperature performance
2Productivity
If hot melt adhesive is produced in granules or pearls form for automated application, then productivity is improved, but manufacturing complexity increases due to formulation requirements
Solution Approach 1:
The patent formulates the adhesive as discrete granules or pearls with controlled size distribution and internal structure. This segmentation enables automated feeding systems to handle the material efficiently while the internal formulation complexity is encapsulated within each granule, separating the complexity from the application process
Solution Approach 2:
The patent introduces master batches or pre-compounded intermediaries that contain the complex mixture of polymers, waxes, and resins. These intermediaries serve as building blocks that simplify the final granulation process while ensuring consistent formulation, acting as a mediator between the complex chemistry and the simple automated application requirement
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 SEBS-based adhesive demonstrates superior adhesion to both synthetic and natural stoppers, maintains adhesion through thermal shock, and can be produced in granules or pearls form for efficient industrial use.
Implementation Method 1
The present invention refers to a hot melt adhesive composition for application, namely, but not exclusively, in the bonding of stoppers to capsules
Implementation Method 2
maintains adhesion through thermal shock
Data Source
AI summary
The present invention refers to a hot melt adhesive for application in the alcoholic beverage bottling industry, more specifically, for application in capsulated stoppers, more specifically, for bonding stoppers to capsules, more specifically, for bonding synthetic stoppers to capsules. The object of the present invention is a hot melt adhesive which, despite comprising styrene block copolymers (SBC) in its formulation, more specifically styrene-ethylene-butadiene-styrene block copolymers (SEBS), this formulation can be produced in particular, but not exclusively, in the form of granules or pearls, allowing the use of automatic feeding in the application of the hot melt adhesive to the final product. Furthermore, the hot melt adhesive of the present invention has good adhesion to materials with low surface tension. In addition, it has good processability, it is suitable for the production process with application by injection and dipping and has excellent resistance to thermal shock.