Items to be marked
Plastic parts should be marked. It is desirable that marking should also be made of the grade and materials,
parts if possible. However, if marking is impossible despite changes of marking locations and sizes,
marking does not have to be performed.
However, marking should be as visible as possible.
(a) When the marking size or location would cause loss of function
(b) When there is not enough space
(c) When it would be difficult due to the way of manufacturing such as the opening and closing direction of
the plastic molding die
(d) When it would not be suitable for the product design
Marking location
Following 1) - 5) below, marking should be performed on as visible locations as possible when disassembling
products manually and separating materials. Visible locations are for example a front face of a product and a convexed
area of the uneven surface. Marking should not be performed on invisible locations.
1) To be shown in locations not hidden by stickers, etc.
2) Priority should be given to the right rather than the left side for plastic parts.
3) Priority should be given to the back rather than the front for plastic parts.
4) Priority should be given to the bottom rather than the top for plastic parts.
5) For container - shaped plastic products, symbols should be placed on the outside, whenever possible.
Possible ways for mold itching the most cost effective way:
http://www.wikihow.com/Acid-Etch-Steel
this also can be used for auto motive plastic products.
The method has its advantages for.
No mold transfer from changes to be made
No high cost machining required.
Marking Locations
Following 1) - 5) below, marking should be performed on as visible locations as possible when disassembling
products manually and separating materials. Visible locations are for example a front face of a product and a con vexed
area of the uneven surface. Marking should not be performed on invisible locations.
1) To be shown in locations not hidden by stickers, etc.
2) Priority should be given to the right rather than the left side for plastic parts.
3) Priority should be given to the back rather than the front for plastic parts.
4) Priority should be given to the bottom rather than the top for plastic parts.
5) For container - shaped plastic products, symbols should be placed on the outside, whenever possible
