Warpage and countermeasure for injection-molded in-mold labeling parts.(Report): An article from: Polymer Engineering and Science
Book Details
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB004RSO0IO
ISBN-13978B004RSO0I8
MarketplaceFrance 🇫🇷
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on March 1, 2011. The length of the article is 4914 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: Decades ago, the production of packaging with the injection in-mold labeling (IML) has been established. With this manufacturing technique, label and packaging, both are of the same polymeric material, become inseparably connected during the injection molding process. Because thermal conductivity of the polymeric label material is clearly smaller than that of the metal mold wall, thermal-induced warpage of injected IML parts or part surface deformation could occur. In this study, structure and warpage behavior of IML parts, which are different from those of conventional molded parts without labels were intensively investigated. It was found that it is the volume contraction difference between label and substrate that forces IML parts to warp to the opposite side of the label. In addition, IML part warpage problem can be coped by varying the mold temperature on the stationary and moving mold platen. By increasing the mold temperature on the label side, the degree of IML part warpage can be reduced with acceptable reduction in mechanical properties. The optimum mold temperature range for particular substrate material, however, was found to be more decisive in maintaining the modulus of elasticity of IML parts than the magnitude of mold temperature difference. POLYM. ENG. SCI., 51:411-418, 2011. [C]2010 Society of Plastics Engineers
Citation Details
Title: Warpage and countermeasure for injection-molded in-mold labeling parts.(Report)
Author: Patcharee Larpsuriyakul
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: March 1, 2011
Publisher: Society of Plastics Engineers, Inc.
Volume: 51 Issue: 3 Page: 411(8)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: Decades ago, the production of packaging with the injection in-mold labeling (IML) has been established. With this manufacturing technique, label and packaging, both are of the same polymeric material, become inseparably connected during the injection molding process. Because thermal conductivity of the polymeric label material is clearly smaller than that of the metal mold wall, thermal-induced warpage of injected IML parts or part surface deformation could occur. In this study, structure and warpage behavior of IML parts, which are different from those of conventional molded parts without labels were intensively investigated. It was found that it is the volume contraction difference between label and substrate that forces IML parts to warp to the opposite side of the label. In addition, IML part warpage problem can be coped by varying the mold temperature on the stationary and moving mold platen. By increasing the mold temperature on the label side, the degree of IML part warpage can be reduced with acceptable reduction in mechanical properties. The optimum mold temperature range for particular substrate material, however, was found to be more decisive in maintaining the modulus of elasticity of IML parts than the magnitude of mold temperature difference. POLYM. ENG. SCI., 51:411-418, 2011. [C]2010 Society of Plastics Engineers
Citation Details
Title: Warpage and countermeasure for injection-molded in-mold labeling parts.(Report)
Author: Patcharee Larpsuriyakul
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: March 1, 2011
Publisher: Society of Plastics Engineers, Inc.
Volume: 51 Issue: 3 Page: 411(8)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
