2K – Recommended operating conditions
In order to improve the adhesion between the polymers, we recommend the following:
High temperatures of both polymers
High injection speed
Mould temperature> 60 ° C
holding pressures not too high
avoid suck injection pressure as high as possible
Pre-essicamaneto of hygroscopic materials (moisture absorbing)
Pre-heating omogeneeo of the engineering plastic (Ideal temperature of 100 ° C) dry, clean and smooth polymer.
sufficient thickness on the side of the softer polymer
Venting of the mold
Location and profile of the injection properly studied
Desired object is manufacturable using 2k-injection, it is definitely best to use 2k-injection over traditional injection molding.
2k-injection a better approach are as followed:
•lower cost
•higher-quality product
•significant reduction in assembly operations
•reduction in cycle times
| Product Descrption | Customer | |||
| Drawing No. | Drawing Situation | Approved by Customer | ||
| Drawing Version | xxxxxxx | Part Net weight( gr.) | 6.5g | |
| Raw material of part | PC/ABS, TPE | T0 sample Date | 2017/4/21 | |
| Mold shots | 600000 | Dimension Report(PPAP) | INCLUDED | |
| Volume | 140000 | Dimension measurement type | 3D Scan or CMM | |
| Life cycle( years) | 8 | Mold Flow: | INCLUDED | |
| Injection cylce time( sec.) | 20 | Special Requirement: | ||
| Injection Machine (T) | 90 | The Aesthetic Surface is CH22 | ||
| Mold Application | PRODUCTION | Date Marked | NO | |
| Mold base type: | Standard LKW – Chinese brand | Cav. Number: | 2 | |
| Mold base material | 1.1730 / UNI C45 norm R=70 | Mold type | BI-INJECTION | |
| Mold insert | DECOMPOSED INSERTS | Injection machine type | HORIZONTAL | |
| Cavity Inserts Material | 1.2344 Hardened | Heat Insulation Plates | NO | |
| Core Inserts Material | 1.2343 Hardened | Core material Coating type | NOT EXPECTED | |
| Sliders material | 1.2344 Hardened | Hot Runner Brand | NOT EXPECTED | |
| Injection Type | COLD RUNNER: sprue – tunnel gate | Thermocouple holes for CheckingTem. | NO | |
| Ejection type | CYLINDRICAL/BLADE EJECTORS | Nozzle Qty: | NOT EXPECTED | |
| Sliders on Mold | MECHANICAL SLIDERS | Control Zone | NOT EXPECTED | |
| Sliders on Mold | // | Electric Socket | NOT EXPECTED | |
| Sliders on Mold | // | Ejector Plate Guide (type & Qty) | BRONZE-GRAPHITE BUSHING | QTY 4 |
| Sliders on Mold | // | Cooling connector | CUSTOMER STANDARD | |
| Sliders on Mold | // | Counter | INCLUDED | |
| Sliders on Mold | // | Micro switch Brand | INCLUDED | |
| Part Suface Requirement (Grain) | TEXTURE FINISHED BY EDM | Trail Run | INCLUDED | |
| Mold Cooling | INTENSIVE FOR ALL INSERTS and PLATES | Mold Working Temperature | ACCORDING TO THE DATA SHEET OF RAW MATERIAL | |