Skin molding is a plastic injection molding technique used to hide or minimize the appearance of gate marks, which are the points where molten plastic enters the mold. Traditionally, this is done by overprinting a transparent film during the initial stages of the molding process. However, a newer process reverses this sequence.
How Skin Molding Works
- Traditional Method: A transparent film is overprinted during the first red phase (likely referring to a stage of the injection molding process) to cover the gate mark.
- New Method: The process sequence is reversed, implying a different approach to applying the film relative to the injection molding cycle. This potentially allows for greater control or a more efficient process.
The example provided mentions the use of a Diamond Line hot runner system. This system likely contributes to the precision and control needed for effective skin molding. A hot runner system ensures consistent and precise delivery of molten plastic to the mold cavity, minimizing variations that could affect the appearance of the final product and the success of the skin molding technique.
Benefits of Skin Molding
- Improved Aesthetics: Conceals unsightly gate marks, leading to a more polished final product.
- Enhanced Product Quality: Results in a smoother, more uniform surface finish.
