Stretch Film
Stretch Film
(OP)
I am using Metallocene in the core layer of a co-extruded (stretch film) cast film. The other two layers include a linear low density polyethene on one side and a low density polythene (anti cling layer) on the other. This give me a good film with good impact properties. The melt curtain is around 45mm. However, the film has less load holding capacity at low stretch percentage. I want to enhance the existing properties and increase the load holding capacity of my films.
Can any one give me some suggestions?
Krunal
Can any one give me some suggestions?
Krunal





RE: Stretch Film
What is the stress strain relationship of each polymer.
Can you substitute the LDPE for MDPE. This might work if that layer is the thickest.
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RE: Stretch Film
RE: Stretch Film
The previous responce included a co-polymer of polystyrene and that would help a great deal, but you must look at compatibility and processibility.
RE: Stretch Film
RE: Stretch Film
This posts are valuable for me.
However, Demon, I would like to ask you in particular:
1. What will be the cling, will it have any effect in the cling of the film?
2. What will be the effect on pinning? Will it cause loss of trims?
3. What should be the temperature range, if I am using a machine which will produce 50T/Day film?
4. What will be the thicknesses I would be able to get the best properties? Can I use it for 20 micron film, 17micron film, 23 micron film, what level?
Your answers will be very valuable to me. Thanks. Keep Posting.
Krunal
RE: Stretch Film
I know that the Styroflex works really well as an additive for PE in cling film and is commercial I believe because it allows great properties and downgauging to save costs. I have seen the results myself and it's quite spectacular. I do not know the answers to any of those last questions though, sorry. I suggest you go to www.styroflex.com and get a contact to get more detailed help.