Hello, I have a question. I understand that molecular orientation is also the cause of the shrinking phenomenon in shrink wrap. As you say, MD-orientation is inherent to blown film extrusion. So, what if I want film that does not shrink? Do you set the nip rolls at the top of the bubble as slow as possible, do you anneal the film , or is there another method?
Plastic molecules always wants to go back to the original form, before it has been processed. So, film shrinks always a little bit. But you can adjust the shrinking by setting width of the blown film and with cooling for example. So if you want that film doesn't shrink much, keep cooling level quite high and width of the bubble as narrow as you can compared to your machines die. More widht, more it shrinks. Nip rollers are just for the thickness adjustment, meaning, if your machines screw runs for example 50rpm, the more you put speed to nip rollers, more thinner film you get. It doesnt effect straight to the shrinking.
hello i started to work in plastic blown film industry. I found your page as a result of research. I wish you success on your TH-cam channel. I am waiting for your help to share your experiences and training on this subject.
I've been coming up with a bunch of equations at work, one of them is to figure out pounds an hour on a roll. So it goes something like this...a = layflat, b = pocket 1, c = pocket 2, x = a+b+c, y = pounds per hour going through extruders. so solving for z we have z=x/(2a)(y). Anyone else playing the game might find this interesting. I came up with this equation when we were making some film we cut over onto two shafts and we had restrictions on how many pounds of film on a roll.
@@darshpatadia6826 when u have light guage,hard material and bubble is in pot ,I mean when is very low :) But if u have soft material and big gauge, sometimes is ok and u have nice round profile ;)
![[ LIVE ] Rank เล่นแต่แครี่ ยาวๆถึง 100ดาว “วันนี้มีกิจกรรมลุ้นรับสกินมาบอกต่อ โก๋แก่ช็อกโกบอล x ROV”](http://i.ytimg.com/vi/5NNgkhWj57Y/mqdefault.jpg)
Very informative. Thank you for making the video.
Very helpful, thanks you for showing this 👍
Are your machines compatible with bioplastic raw materials (PVA, Starch, Glycerin, and other additives)?
Hello.I need hotmelt film for polyurethane cornice moulding.
GREAT
... and use silicon spray if Your lump sticking to the air ring,much easier
Nice
You guys do custom slitting and print? And set up for SWS, DWS, U-Film, J-film, ect??
no
Hello, I have a question. I understand that molecular orientation is also the cause of the shrinking phenomenon in shrink wrap. As you say, MD-orientation is inherent to blown film extrusion. So, what if I want film that does not shrink? Do you set the nip rolls at the top of the bubble as slow as possible, do you anneal the film , or is there another method?
Plastic molecules always wants to go back to the original form, before it has been processed. So, film shrinks always a little bit. But you can adjust the shrinking by setting width of the blown film and with cooling for example. So if you want that film doesn't shrink much, keep cooling level quite high and width of the bubble as narrow as you can compared to your machines die. More widht, more it shrinks. Nip rollers are just for the thickness adjustment, meaning, if your machines screw runs for example 50rpm, the more you put speed to nip rollers, more thinner film you get. It doesnt effect straight to the shrinking.
@@jv1702 Sooo what is your question?...
@@ryanr9792 I didn't ask nothing...
@@jv1702Ok, so what's your point?
@@ryanr9792 point on what? I'm confused what the hell are you talking about
We'll come
Cool.
hello i started to work in plastic blown film industry. I found your page as a result of research. I wish you success on your TH-cam channel. I am waiting for your help to share your experiences and training on this subject.
What help are you waiting for? Your work doesn't provide it? For 2 years?
Life ka truth pata chal gaya
I wants to purchasing LDPE or HDPE plastic roll
Best video everr
Worst*
LDPE=clarity
Do you have pvc arc cutter?
no idea what that is
any software knowledge is required in the blow extrusion industry?
@Charles Badstones Exactly..
It was made from spare WW2 parts. We never made enough money to upgrade. Still made better film than plants with latest high tech
I've been coming up with a bunch of equations at work, one of them is to figure out pounds an hour on a roll. So it goes something like this...a = layflat, b = pocket 1, c = pocket 2, x = a+b+c, y = pounds per hour going through extruders. so solving for z we have z=x/(2a)(y). Anyone else playing the game might find this interesting. I came up with this equation when we were making some film we cut over onto two shafts and we had restrictions on how many pounds of film on a roll.
Sounds good
Do you machines not have meter-counters? Or do they not have a computer that shows poduction parameters?
TRY THIS... OPEN WIDTH X FEET PER MINUTE X GAUGE X 48 = POUNDS PER HOUR
I see a bunch of hard wrinkles. Up those tensions on the winder
I ran an extruder that produced 76" recovery of blown PVC film.
LOL this 'bubble' is tiny hahaha
Easy work...if you need operator blow film machine i'm ready.
Ok I'm looking to hire people but first need to answer my questions
When does the film tear like paper?
Explain in detail
@@darshpatadia6826 when u have light guage,hard material and bubble is in pot ,I mean when is very low :) But if u have soft material and big gauge, sometimes is ok and u have nice round profile ;)
@@darshpatadia6826 So I have a question... what to do if u need dart on 100% but u have just 80% ... Explain in detail ;)
Y'all hiring?
Jop hai
english ?
I job my film
Iam operator blown film machine
My job and I hate it 🤣
pasde video
Tatti video