Overview

This document provides comprehensive technical specifications, design guidelines, and application details for Synventive Series GA ... E hot runner single nozzles, focusing on open-type nozzles with various tip shapes and gating options used in injection molding.

1. Product Description and Classification

• Series: GA ... E
• Type: Single, open-style nozzles with screw-in tips allowing multiple gating types.
• Nozzle Sizes: Primarily flow bore diameters of Ø12 mm and Ø16 mm, with some references to Ø20 mm.
• Gating Types: Open, open with torpedo, and valve gate, depending on nozzle tip shape.
• Nozzle Tip Shapes: Multiple shapes (Y, U, F, P, K, L) tailored for different materials and processing windows.

2. Technical Specifications

• Heating: External heating via 230 V AC supply, Fe/CuNi thermocouple (DIN 43710), with 2 to 4 heating zones delivering 400 W to 1930 W depending on nozzle length and type.
• Materials Compatibility: Suitable for all common thermoplastics; maximum shot weight per nozzle up to 1500 g for low viscosity materials.
• Dimensions: Detailed dimensional parameters including nozzle length (L), cut out lengths (L1, L2), head height (H), diameters for cut outs and centring, nozzle contact radius, and flow bore diameter. Tolerances comply with DIN ISO 2768-mK standards.
• Cooling: Mandatory cooling around and opposite the nozzle tip to maintain optimal operation and prevent overheating.

3. Nozzle Tip and Gating Variants

• Y Shape: Open with torpedo, suited for narrow to medium process windows.
• U Shape: Open with torpedo, for medium to wide process windows.
• F Shape: Open with torpedo, for narrow to medium process windows.
• P Shape: Open with torpedo, for medium to wide process windows.
• K Shape: Open gating, compatible with all usual thermoplastics.
• L Shape: Open with torpedo, for narrow to medium process windows.

4. Installation and Mounting Details

• Cut Outs: Precise cut out dimensions for nozzle body, connections, locking pin groove, and nozzle tip ensure correct mounting and alignment in mold plates.
• Locking Pin: Groove or bore secures nozzle against rotation during operation.
• Positioning: Nozzle tip front must always contact the plastic to ensure proper gating.

5. Heating Zones and Power Distribution

• Heating zones are numbered from nozzle tip to nozzle head.
• Power ratings vary by nozzle length and type, typically ranging from 400 W to 1930 W.
• Examples include length code 052 with 400 W to 1030 W and length code 350 with 400 W to 1930 W.

6. Design and Application Notes

• All illustrations are schematic and not to scale.
• Users should consult the Synventive Hot Runner Guide for detailed design and application guidance.
• Contact Synventive for specific application advice to ensure optimal nozzle selection and configuration.

7. Standards and Tolerances

• General tolerances follow DIN ISO 2768-mK standards.
• Specific tolerances include radius R at -0.05 mm and other dimensions ranging from -0.1 mm to +0.3 mm depending on features.
• Surface finish and shape/position tolerances are specified to guarantee proper fit and function.

8. Critical Notes and Best Practices

• Ensure correct selection of length codes and nozzle series to match application requirements.
• Strictly adhere to specified tolerances for proper fit and function.
• Maintain required cooling to prevent overheating and extend nozzle life.
• Consult Synventive for any application-specific customization or clarifications.

9. Contact Information

Global contact details for Synventive representatives are provided for technical support and inquiries across multiple countries including Australia, Brazil, Canada, China, Germany, India, Japan, USA, and others.

Summary of Critical Parameters

• Max Shot Weight: 1500 g (for low viscosity materials)
• Heating Zones: 2 to 4 zones, 400-1930 W power range
• Nozzle Sizes: Primarily Ø12 mm and Ø16 mm flow bores
• Gating Types: Open, open with torpedo, valve gate
• Material Compatibility: All common thermoplastics
• Mounting: Requires precise cut outs and locking pin for anti-rotation
• Cooling: Mandatory around and opposite nozzle tip

This document serves as a detailed technical reference for specifying, selecting, and installing Synventive GA ... E series hot runner nozzles in injection molding applications, ensuring optimal performance and reliability.