Method and apparatus for pin-hole prevention in zone laminates

Details Method and apparatus for pin-hole prevention in zone laminates Method and apparatus for pin-hole prevention in zone laminates

B - Operations, Transporting

32

B

B32B 27/12 (2006.01) B29C 55/18 (2006.01) B32B 3/02 (2006.01) D04H 13/00 (2006.01)

Patent

CA 2334885

The method and apparatus of the present invention prevents the formation of pin-holes during stretching of strip laminates in the cross-machine direction (CD). Pin-holes are prevented by creating slack areas (10a) along the length of the laminates (10) where the edges of the non-woven strips (14) meet with the polymer film (12), pressing the slack areas (10a) into the interdigital stretching rollers (26) without stretching the slack areas (10a), and stretching the remainder of the laminate (10) in a typical manner. The slack areas (10a) are formed prior to interdigitation by, for example, formation of a furrow, a fold or a corrugation.

L'invention se rapporte à un procédé et à un appareil permettant d'éviter la formation de piqûres au cours de l'étirage de laminés en ruban dans le sens travers (CD). On évite la formation de ces piqûres en créant des zones lâches (10a) suivant la longueur du laminé (10) où les bords de bandes non tissées (14) rejoignent le film polymère (12), en comprimant ces zones lâches (10a) de façon à les faire passer dans les cylindres d'étirage engrenants (26) sans étirer les zones lâches (10a), et en étirant le reste du laminé (10) de manière classique. On forme les zones lâches (10a) avant l'étape d'engrènement en créant, par exemple, un sillon, un pli ou une ondulation.

Affiliated with

Also associated with

Rating

Method and apparatus for pin-hole prevention in zone laminates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for pin-hole prevention in zone laminates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for pin-hole prevention in zone laminates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1518424