Add-On Module for Foam Injection Molding of Thermoplastic Parts

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes a device designed for use in a plastic injection molding machine to manufacture at least partially foamed thermoplastic components. The device combines and disperses a thermoplastic melt with a foaming agent (blowing fluid) using a special mixer and a pressure storage unit. This allows for the controlled creation of foamed structures within molded plastic parts.

Use CasesContent extracted from patent full text and abstract with AI.

• Production of lightweight automotive components with foamed thermoplastic cores
• Manufacturing insulated panels or housings for appliances
• Creation of construction elements with improved thermal or sound insulation
• Production of packaging materials with reduced material use
• Manufacturing consumer goods where weight reduction is beneficial, such as sports equipment or cases

BenefitsContent extracted from patent full text and abstract with AI.

• Enables efficient manufacturing of partially foamed plastic parts for weight reduction
• Improves characteristics like insulation, structural strength, or sound absorption in end products
• Reduces material consumption, leading to cost savings and environmental benefits
• Allows flexibility in producing a wide range of foamed plastic components
• Integrates seamlessly with existing injection molding machines

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

Device (13) for installation in a plastic injection molding machine (1) for thermoplastic foam injection molding of at least partially foamed thermoplastic components, characterized in that the device (13) comprises a melt line (3), a propellant fluid line (6), a mixer (4) connected to the melt line (3) and the propellant fluid line (6) for dispersing thermoplastic melt and propellant fluid, at least one melt-propellant fluid mixture line (10, 11) and a pressurized accumulator (5) connected to the mixer (4) and the melt line (3) via the melt-propellant fluid mixture line (10, 11) for receiving the melt-propellant fluid mixture and diffusing the propellant fluid into the thermoplastic melt, and in that the device (13) is a component of a tool (12) with at least one tool cavity or a tool module for connection with at least one tool (12) with at least one tool cavity.