2 réponses
Hello,
This is a scale to determine how much the seller thinks you’re a fool...
More seriously, it might correspond to the Denier used in textiles or maybe to a viscosity index (?). But when you look at the sellers of "raw" films, this unit is never mentioned...
Furthermore, when you see numbers like 99999D & Co., just walk away; they are just big numbers pulled out of thin air to sound appealing. Kind of like speakers rated at 3000W or flashlights rated at 10,000 Lumens...
Between 500D and 1000D, if it's from the same seller, it could give an idea of the film's durability... One might assume that the higher the number, the thicker and more resistant the film is... But I highly advise you not to rely too much on that! (Overall, on Chinese sites, they are all the same... Just TPU of 0.15mm)
Personally, I prefer tempered glass protections, which are much more shock-resistant...
Best regards.
This is a scale to determine how much the seller thinks you’re a fool...
More seriously, it might correspond to the Denier used in textiles or maybe to a viscosity index (?). But when you look at the sellers of "raw" films, this unit is never mentioned...
Furthermore, when you see numbers like 99999D & Co., just walk away; they are just big numbers pulled out of thin air to sound appealing. Kind of like speakers rated at 3000W or flashlights rated at 10,000 Lumens...
Between 500D and 1000D, if it's from the same seller, it could give an idea of the film's durability... One might assume that the higher the number, the thicker and more resistant the film is... But I highly advise you not to rely too much on that! (Overall, on Chinese sites, they are all the same... Just TPU of 0.15mm)
Personally, I prefer tempered glass protections, which are much more shock-resistant...
Best regards.
Hello,
Aside from the ridiculous aspect that I share, it's a story like Lucky Luke: D stands for Dalton, the usual unit of measurement for the molecular mass of proteins and large polymers.
This unit is sometimes used in "everyday life," for example for constipation remedies like Macrogol 4000 or other PEGs in cooling liquids.
The question remains what the "quality" of a hydrogel is in proportion to the molecular mass of the substance used...
Aside from the ridiculous aspect that I share, it's a story like Lucky Luke: D stands for Dalton, the usual unit of measurement for the molecular mass of proteins and large polymers.
This unit is sometimes used in "everyday life," for example for constipation remedies like Macrogol 4000 or other PEGs in cooling liquids.
The question remains what the "quality" of a hydrogel is in proportion to the molecular mass of the substance used...