IP Library › Patent Application 14210531
Patent Application
App. No. 14/210,531

APPARATUS FOR MANUFACTURING AND PROCESSING FILMS

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Quick Facts
Patent No.
US None
App. No.
14/210,531
Abstract

A film processing apparatus includes a film delivery section and a film stretching section. The film stretching section is positioned downstream of the film delivery section. The film stretching section defines a first inlet and a first outlet. The film processing apparatus includes one or more slitting devices positioned between the first inlet and the first outlet.

Claims (27)

1 . A film processing apparatus comprising:

a film delivery section;

a film stretching section defining a first inlet and a first outlet, the film stretching section being positioned downstream of the film delivery section; and

at least one slitting device positioned between the first inlet and the first outlet.

2 . The film processing apparatus of claim 1 , wherein slitting device is positioned to slit the film before a yield point of the film.

3 . The film processing apparatus of claim 1 , wherein slitting device is positioned to slit the film after a yield point of the film.

4 . The film processing apparatus of claim 1 , wherein slitting device is positioned to slit the film before stretching the film 50 percent.

5 . The film processing apparatus of claim 1 , wherein slitting device is positioned to slit the film before stretching the film 150 percent.

6 . The film processing apparatus of claim 1 , wherein slitting device is positioned to slit the film before stretching the film 250 percent.

7 . The film processing apparatus of claim 1 , wherein slitting device is positioned to slit the film before stretching the film 300 percent.

8 . The film processing apparatus of claim 1 , wherein slitting device is positioned to slit the film after stretching the film 250 percent.

9 . The film processing apparatus of claim 1 , wherein slitting device is positioned to slit the film after stretching the film 275 percent.

10 . A method for manufacturing pre-stretch film, the method comprising:

providing a film processing apparatus comprising a film delivery section and a film stretching section positioned downstream of the film delivery section;

providing a polymer suitable for producing the pre-stretch film;

forming a film in the polymer in the film delivery section;

feeding the film to the film stretching section; and

slitting the film in the film stretching section.

11 . The method of claim 10 , wherein the film is slit before a yield point of the film.

12 . The method of claim 10 , wherein the film is slit after a yield point of the film.

13 . The method of claim 10 , wherein the film is slit before stretching the film 50 percent.

14 . The method of claim 10 , wherein the film is slit before stretching the film 150 percent.

15 . The method of claim 10 , wherein the film is slit before stretching the film 250 percent.

16 . The method of claim 10 , wherein the film is slit before stretching the film 300 percent.

17 . The method of claim 10 , wherein the film is slit after stretching the film 50 percent.

18 . The method of claim 10 , wherein the film is slit after stretching the film 250 percent.

19 . The method of claim 10 , wherein the film is slit after stretching the film 275 percent.