PMID- 35406310
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220429
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 14
IP  - 7
DP  - 2022 Apr 1
TI  - Investigation of the Warpage of a High-Density Polyethylene Pallet by Plastic 
      Injection Compression Molding: Part I-Numerical Approach.
LID - 10.3390/polym14071437 [doi]
LID - 1437
AB  - Many challenges are associated with the injection compression molding process for 
      producing a half-pallet (1320 mm x 1110 mm x 75 mm, length x width x height), 
      which is butt-welded to another one for enhancing its strength. This pooled 
      high-density polyethylene (HDPE) pallet is able to endure the impacts of a heavy 
      load and a low ambient temperature. Reducing the warpage of a half-pallet is, 
      therefore, essential for reducing the residual internal stress within the welded 
      portions. An advanced Moldex3D package helps to detail the temperature 
      distribution and warpage of a half-pallet. The pre-setting molding parameters 
      from a mass-production factory produce half-pallets with worse flatness. In this 
      investigation on using appropriate cooling water temperatures within the core and 
      cavity plates of the mold, the numerical results show that the warpage of the top 
      surface of the half-pallet was 11.549 mm, low warpage with respect to this 
      large-scale pallet. Furthermore, the compression speed of 50-60 mm/s may have 
      produced a low flatness of the half-pallet in this study.
FAU - Cheng, Chun-Der
AU  - Cheng CD
AD  - Department of Mechanical Engineering, Ming Chi University of Technology, New 
      Taipei City 24301, Taiwan.
FAU - Liao, Yi-Ling
AU  - Liao YL
AD  - Department of Mechanical Engineering, Ming Chi University of Technology, New 
      Taipei City 24301, Taiwan.
FAU - Tsai, Hsi-Hsun
AU  - Tsai HH
AUID- ORCID: 0000-0002-1069-3723
AD  - Department of Mechanical Engineering, Ming Chi University of Technology, New 
      Taipei City 24301, Taiwan.
AD  - Research Center for Intelligent Medical Devices, Ming Chi University of 
      Technology, New Taipei City 24301, Taiwan.
LA  - eng
PT  - Journal Article
DEP - 20220401
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC9003352
OTO - NOTNLM
OT  - flatness
OT  - injection compression molding
OT  - molding flow analysis
OT  - plastic pallet
OT  - warpage
COIS- The authors declare no conflict of interest with this work.
EDAT- 2022/04/13 06:00
MHDA- 2022/04/13 06:01
PMCR- 2022/04/01
CRDT- 2022/04/12 01:03
PHST- 2022/02/25 00:00 [received]
PHST- 2022/03/11 00:00 [revised]
PHST- 2022/03/29 00:00 [accepted]
PHST- 2022/04/12 01:03 [entrez]
PHST- 2022/04/13 06:00 [pubmed]
PHST- 2022/04/13 06:01 [medline]
PHST- 2022/04/01 00:00 [pmc-release]
AID - polym14071437 [pii]
AID - polymers-14-01437 [pii]
AID - 10.3390/polym14071437 [doi]
PST - epublish
SO  - Polymers (Basel). 2022 Apr 1;14(7):1437. doi: 10.3390/polym14071437.