公开(公告)号：US20190001605A1

公开(公告)日：2019-01-03

申请号：US16064895

申请日：2016-12-15

Applicant: Roll-O-Matic A/S

Inventor： John Buk JENSEN ,  Mads Sandahl CHRISTENSEN ,  Jens Peder RASMUSSEN

IPC: B31B70/81 ,  B65D33/28

Abstract: Continuous method for making a web of draw strip bags, comprising providing a film web (F) wherein a first portion (11) and a second portion (12) overlap each other with free longitudinal side edges (7, 7′) thereof being essentially aligned with each other, back folding a first part (13) having said free side edge (7) of the first portion (11) outwardly away from said second portion (12) along a first fold line (B) by a first hemmer (120), and by folding a first subpart (15) of said first part (13) along a second fold line (C) whereby the free side edge (7) of the first portion (11) is brought into near alignment with said first fold line (B) while a second subpart (14) of said first part (13) of the first portion (11) remains back folded, whereby said first and second subparts (14, 15) of the first portion define a first hem (H1).

公开(公告)号：US20180099832A1

公开(公告)日：2018-04-12

申请号：US15560114

申请日：2016-03-22

Applicant: Roll-O-Matic A/S

Inventor： John Buk JENSEN ,  Mads Sandahl CHRISTENSEN ,  Jens Peder RASMUSSEN

IPC: B65H18/10 ,  B65H19/30 ,  B65H18/02

CPC classification number: B65H18/10 ,  B65H18/021 ,  B65H19/30 ,  B65H2301/41354 ,  B65H2301/4139 ,  B65H2301/418526 ,  B65H2406/10 ,  B65H2406/33 ,  B65H2408/231 ,  B65H2701/191

Abstract: The invention relates to a roll making apparatus comprising spindles optionally having apertures for pressurized air and/or for applying a vacuum, the spindles being movable between a retracted position and an extended position; a roll engaging face configured to engage a roll carried by a spindle, upon the spindle carrying said roll moving to said retracted position, to move the roll relative to the spindle.