Plastic Container Blow-Molding with Integrated Dispensing Valve
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Solution Overview
Problem
Existing methods for manufacturing plastic containers with dispensing valves prolong the blow-molding cycle and reduce production output due to the need for inserting pre-manufactured dispensing sockets or valve housings into the blow mold, and subsequent assembly steps required for completing the valve.
Innovation Solution
The method involves blow-molding the container with a securing segment and a round depression on the front wall to center and secure the container in a welding machine, where a dispensing valve is fused with a fastening flange or a dispensing socket with an outer thread is attached to the discharge opening, allowing for efficient integration of the valve without extending the blow-molding cycle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pre-manufactured dispensing socket or valve housing is inserted into the blow mold, then the dispensing valve can be integrated into the container, but the blow-molding cycle is prolonged and production output is reduced
Solution Approach 1:
The patent merges the dispensing valve integration with the blow-molding process itself. The valve housing is designed with an intake socket that fits directly into the blow mold, and the dispensing socket is formed as an integral part of the container wall during blow-molding, eliminating the need for separate insertion steps and extending the blow-molding cycle.
Solution Approach 2:
The patent applies preliminary action by pre-forming the dispensing socket and valve housing structures before the final blow-molding operation. The dispensing socket is created as a pre-formed component that is then integrated into the container wall during the blow-molding process, allowing for efficient assembly without extending the overall cycle time.
2Reliability
If multiple assembly steps are performed after blow-molding to complete the dispensing valve, then the valve can be properly assembled, but the production output is reduced
Solution Approach 1:
The patent combines multiple assembly operations into a single integrated process. The dispensing valve, actuating shaft, and actuating lever are assembled in one operation after blow-molding, rather than requiring separate steps for each component. This merging of operations maintains assembly completeness while improving production efficiency.
3Ease of manufacture
If the container is blow-molded with securing segments and round depressions, then the container can be centered and secured in the welding machine, but the blow-molding process becomes more complex
Solution Approach 1:
The patent applies preliminary action by forming the securing segments and round depressions as integral features during the blow-molding process itself, rather than adding them as separate post-processing steps. This preliminary formation of centering and securing features simplifies the overall manufacturing process while ensuring proper positioning in the welding machine.
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 approach increases production output by streamlining the manufacturing process, reducing assembly steps, and ensuring a secure attachment of the dispensing valve, thereby enhancing the efficiency of the manufacturing facility.
Implementation Method 1
the container is blow-molded to have at least one securing segment on the outer side of the recess of the front wall of the container for centering and securing the finish-blowmolded container in a welding machine and to have a round depression in the outer side of the recess
Implementation Method 2
the dispensing valve is fused with a fastening flange formed on its intake socket to the outer edge of the discharge opening of the container
Data Source
AI summary
In a method for manufacturing a plastic container for liquids, the container is blow-molded to have a securing segment on an outer side of the recess of the front wall for centering and securing the finish-blowmolded container in a welding machine and to have a round depression in the outer side of the recess that has a diameter matching a nominal width of the dispensing valve. The bottom of the round depression is cut by a cutting tool that is centered in the round depression for producing the discharge opening of the container. A fastening flange of the intake socket of the dispensing valve is fused to an outer edge of the discharge opening. Alternatively, a dispensing socket of plastic material having an outer thread is fused to the outer edge of the discharge opening and the dispensing valve is secured on the dispensing socket by a union nut.