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Cosmetics For PCBs

Dave F

#14037

Cosmetics For PCBs | 30 September, 1998

All y'all BACKGROUND. How many times do you see folks come to work all painted-up and then by the time first break comes, the lipstick, eye liner, and who knows what else are gone and they�re heading for the facilities to "freshen-up." I wonder if they might be getting make-up on their hands by subconsciously touching their faces and then touching boards. And it's not just the ones with heavy make-up, that you notice, a lot of people wear make-up that's not as noticable. QUESTIONS: 1 So are make-up wearers spreading the stuff all over our boards? 2 Is make-up good for boards? 3 How do you get people to quit wearing make-up at work? TTYL Dave F

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Chrys

#14038

Re: Cosmetics For PCBs | 30 September, 1998

All y'all | | BACKGROUND. How many times do you see folks come to work all painted-up and then by the time first break comes, the lipstick, eye liner, and who knows what else are gone and they�re heading for the facilities to "freshen-up." I wonder if they might be getting make-up on their hands by subconsciously touching their faces and then touching boards. And it's not just the ones with heavy make-up, that you notice, a lot of people wear make-up that's not as noticable. | | QUESTIONS: | | 1 So are make-up wearers spreading the stuff all over our boards? | 2 Is make-up good for boards? | 3 How do you get people to quit wearing make-up at work? | | TTYL | Hi Dave, To answer your questions, 1: Most of the make-up that disappears during the workday is absorbed into the wearer's skin. Some of it may be transmitted tactilly from the face to the board, but if make-up rubbed off that easily, you'd see it all over people's clothing, telephones, microscopes, ESD smocks, keyboards, etc. I'd say the concern about make-up getting on the boards by touching them is about equal to the concern of people not washing their hands after using the lavatory. 2: Makeup is only good for boards if it is in "retro" colors: green eyeshadow, gold & silver & copper sparklies - to compliment the motif of the board. Earth tones or neutrals would definitely clash with solder mask. 3: How do you get women to stop wearing make up to work? Probably in the same way you try to get men to wash their hands after using the facilities. Try posting signs. Good luck. Chrys

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Benji

#14039

Re: Cosmetics For PCBs | 2 October, 1998

Hi Dave,

In the first level packaging, people who work on the assembly floor must not wear make-up. In the old days when the requirements were not as strict as what it is these days, one good protection was to wear finger cots or surgical gloves. However, airborne particles were not easy to control.

Benji

All y'all |

| BACKGROUND. How many times do you see folks come to work all painted-up and then by the time first break comes, the lipstick, eye liner, and who knows what else are gone and they�re heading for the facilities to "freshen-up." I wonder if they might be getting make-up on their hands by subconsciously touching their faces and then touching boards. And it's not just the ones with heavy make-up, that you notice, a lot of people wear make-up that's not as noticable.

|

| QUESTIONS:

|

| 1 So are make-up wearers spreading the stuff all over our boards?

| 2 Is make-up good for boards?

| 3 How do you get people to quit wearing make-up at work?

|

| TTYL

|

| Dave F |

reply »

Dave F

#14040

Re: Cosmetics For PCBs | 2 October, 1998

Benji: I tend to agree with you that assemblers shouldn't wear make-up. I'm unsure what first level assemblers are tho.

I've been down that finger cot/glove route ...

1 If someone is going to smear facial or cosmetic oil on a board, they can do it with finger cot/gloves as easily as they can without finger cot/gloves ... finger cot/gloves only keep oils from hands away from the boards. Often the skin on people's hands is so dry (in a relatively low humidity plant) that hand oils are not the problem ... alligator skin is. 2 Finger cot/gloves are difficult to control 3 By surgical gloves, I assume you mean ESD safe, powder-free, nitrile (or similar) gloves. 4 Operators that handle paste, boards that have not been reflowed, and stencils with paste on them should use gloves

You're correct that keeping dust out of the plant is tough to do, short of assembling in a clean room.

TTYL

Dave F | Hi Dave, | | In the first level packaging, people who work on the assembly floor must not wear make-up. In the old days when the requirements were not as strict as what it is these days, one good protection was to wear finger cots or surgical gloves. However, airborne particles were not easy to control. | | Benji | | All y'all | | | | | BACKGROUND. How many times do you see folks come to work all painted-up and then by the time first break comes, the lipstick, eye liner, and who knows what else are gone and they�re heading for the facilities to "freshen-up." I wonder if they might be getting make-up on their hands by subconsciously touching their faces and then touching boards. And it's not just the ones with heavy make-up, that you notice, a lot of people wear make-up that's not as noticable. | | | | | | QUESTIONS: | | | | | | 1 So are make-up wearers spreading the stuff all over our boards? | | | 2 Is make-up good for boards? | | | 3 How do you get people to quit wearing make-up at work? | | | | | | TTYL | | | | | | Dave F | | | |

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Dave F

#14041

Re: Cosmetics For PCBs | 2 October, 1998

All y'all | |

|

| | BACKGROUND. How many times do you see folks come to work all painted-up and then by the time first break comes, the lipstick, eye liner, and who knows what else are gone and they�re heading for the facilities to "freshen-up." I wonder if they might be getting make-up on their hands by subconsciously touching their faces and then touching boards. And it's not just the ones with heavy make-up, that you notice, a lot of people wear make-up that's not as noticable.

|

| |

|

| | QUESTIONS:

|

| |

|

| | 1 So are make-up wearers spreading the stuff all over our boards?

|

| | 2 Is make-up good for boards?

|

| | 3 How do you get people to quit wearing make-up at work?

|

| |

|

| | TTYL

|

| |

| Hi Dave,

|

| To answer your questions,

|

| 1: Most of the make-up that disappears during the workday is absorbed into the wearer's skin. Some of it may be transmitted tactilly from the face to the board, but if make-up rubbed off that easily, you'd see it all over people's clothing, telephones, microscopes, ESD smocks, keyboards, etc. I'd say the concern about make-up getting on the boards by touching them is about equal to the concern of people not washing their hands after using the lavatory.

|

| 2: Makeup is only good for boards if it is in "retro" colors: green eyeshadow, gold & silver & copper sparklies - to compliment the motif of the board. Earth tones or neutrals would definitely clash with solder mask.

|

| 3: How do you get women to stop wearing make up to work? Probably in the same way you try to get men to wash their hands after using the facilities. Try posting signs.

| Good luck.

|

| Chrys

|

| | Chrys: I was going to argue with you, but you're corect that guy thing is hard to do. Dave F

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