mascara tube

The surface position of the mascara tube parting:
 Plastic molding, in a mold in order to remove the plastic from the mold parting surface, facing the mold in terms of separate mold called speaking called parting line of plastic parts.
 The parting surfaces must be set up in section contour of plastic parts. To make plastic parts to come off from the cavity.
 The position of the parting line perpendicular to the mold opening direction, parallel to the mold opening direction, there are also inclined with respect to the mold opening direction.
 The parting lines are straight lines, polylines and curves.
The location of the parting line will directly affect the appearance, to be located on the plastic parts
 Surface is not the position of being watched. The parting line to be located on the site of easy to mold and easy to handle overflow edge.
 3. Products wall thickness
 Thermoplastics made of thin-walled container wall thickness up to 0.25mm.
 Cosmetic plastic parts design is generally not less than 0.6 ~ 0.9mm, often take 1.5 ~~ 4.0mm.
 Plastic containers as well as the necessary thickness requirements relatively uniform wall thickness, not too thick or too thin. Otherwise cause uneven plastic shrink stress concentration, and defects such as cracks and deformation. Of course, any plastic container to achieve a wall thickness is impossible completely consistent. If the plastic structure must have a non-uniform thickness, smooth transition should be taken to avoid mutations. Thermoplastic junction thickness unevenness recommendations from 1:1.2 to 1:1.5.
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