gloss coating

[e.ferriani]

hi to everyone, I don't know if it's the right section, in case it's not the manager in turn can move it to the right place.

but they come to the point.
for a few years (8 years) I design the finishing of the paint required for our details in painted sheet. I have always written the color name (e.g. intense black) followed by the ral (e.g. ral9005) followed by roughness (e.g. semilucent gloss 50±5).

today the exterior painter of our carpenter has woken up and I am told that the intense black, for example, if I want it with gloss 50 is no longer that ral9005 as I indicated but becomes something else.
I am also told that the gloss 50 is not semi-glossy but glossy.

regardless of the fact that
- not having the tool to verify it I shouldn't even write it,
- if this is true they could even notice it before.

I had this indication:

classification	measuring angle	gloss
very shiny	60°	greater or equal to 80 glosses
glossy	60°	less than 80, greater or equal to 60 gloss
semi-finished	60°	less than 60, greater or equal to 30 glosses
semi-opacoustic	85°	less than 30, greater or equal to 10 glosses
opaque	85°	less than 10, greater or equal to 5 glosses
very matt	85°	less than 5 glosses

Does anyone clarify my ideas?
is there something more specific to write or see to find the correct indication, in case this is wrong?

 

[MassiVonWeizen]

today the exterior painter of our carpenter has woken up and I am told that the intense black, for example, if I want it with gloss 50 is no longer that ral9005 as I indicated but becomes something else.
I am also told that the gloss 50 is not semi-glossy but glossy.

lets give tables, specific regulations and whatever it takes to demonstrate how it states.
the gloss is regulated by the iso 2813 https://www.iso.org/standard/56807.html*the heral is itself a legislation ral (color scale) - wikipedia, among other things today I found that the first number identifies the gradation

I found nothing to say that when changing the gloss changes the heral

*for record duty I found some sites that declare other (for example This is e This is)

 

[e.ferriani]

the link leads to a law, obviously protected.
that of the ral I already knew, I use it to define the colors in solid edge.
is there any other pdf of your knowledge on the network where you can still clearly find the definition and parameters of the gloss?

 

[Fabietto]

Hi.
we in the company have this to measure the gloss on thermoplastic details:

Glossmetri 20° 60° 85° - Erichsen Strumenti di Misura

Misuratori di brillantezza portatile a triplo angolo 20°, 60° e 85° per alta, media e bassa brillantezza. In accordo con la norma DIN 67530. Selezione automatica della scala di misura: 0–2000 GU (20°); 0–1000 GU (60°); 0–160 GU (85°). Menù guida multilingua: italiano, inglese, spagnolo, tedesco...

www.erichsen.it

We also use the attached pdf as an indication for measurement.
consider that in our sector, however, it is indicated on cartiglio the color reference of the customer, not tied to ral/pantone etc, and the numerical value of the gloss to be obtained, without any adjective of matt-gloss etc..

 

[e.ferriani]

we fortunately for now we do not need to check also these parameters, but we indicate them in the drawings as an indication for the varnisher.
But now I have this problem that I would like to solve. I will also keep this pdf that you have attached me as an indication, maybe turning it to the painter, then we will see.
Thank you.

 

[Fulvio Romano]

antipathic situation. There are still a few things to clarify.

1. the required requirements must be put on the design. If a requirement is not satisfied and no one notices it means it was a hyperwine.

2. the ral does not indicate the colour rendering of an object. different finishes give different effects to the same

3. the gloss does not indicate the visual rendering of an object. a finished paint, a metallic and a pearly made visual completely different even if a glossmeter indicates the same value.

4. for objects with stringent aesthetic requirements to be made in high numbers typically extract golden samples from the first sampling and are held (data and signed) for comparison one with the supplier and one with the customer.

4bis. The color palettes are the equivalent of the golden samples for standard productions. the supplier delivers an object of the same material and with the same processing of the bat so as to avoid doubts about the final result. a standard finisher will never express itself in terms of ral, but in number of code of its own bunch.

50 gloss is defined semi-gloss according to one 2813. if the supplier believes it is not so you ask for documentary evidence.

in any case if until today what was provided was ok I do not understand why to move the slime.

 

[e.ferriani]

in any case if until today what was provided was ok I do not understand why to move the slime.

You know why? I don't.
and you know how many times I've asked for color painted sheet samples that they use for us?
never had!
I'll have to make an official order. Maybe they will.

 

[meccanicamg]

probably there are "qualified" suppliers and others that go "quel tant al toc". Unfortunately there are many practical and few specialized technicians. I come across a lot of corbels too....work with economy....you lose quality too.