Preliminary Research on Gas⁃Water⁃assisted Injection Molding Technology

doi:10.19491/j.issn.1001-9278.2021.07.012

Abstract

Abstract:

In this paper， the method and process of gas?water?assisted injection molding（GWAIM）process were described in detail. The key technology of the specific device design for the GWAIM process and its process control as well as the advantages of GWAIM process were discussed based on our previous research and practical work. The results indicated that the inner wall of GWAIM was brighter， the wall thickness was more uniform， and the molding quality was better. The GWAIM process still has a problem of material applicability， but it has a wider range of material applicability than the water?assisted injection molding process.

Key words: gas?water?assisted injection molding, device, process, experiment

CLC Number:

TQ320.66⁺2

WANG Yanqing, KUANG Tangqing, LAI Jiamei, LIU Hesheng, LIU Tian. Preliminary Research on Gas⁃Water⁃assisted Injection Molding Technology[J]. China Plastics, 2021, 35(7): 69-73.

Figures/Tables 6

Fig.1. Schematic diagram of GWAIM process

Fig.2. Structure diagram of gas injection?water injection device

Fig.3. Exhaust device structure diagram

Fig.4. GWAIM samples under reasonable process parameters

Fig.5. Longitudinal cross?sections of samples formed by different processes

Fig.6. Longitudinal cross?sections of WAIM and GWAIM process samples of different materials

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