Method for producing tear tape and seal and tear line for...

Details Method for producing tear tape and seal and tear line for... Method for producing tear tape and seal and tear line for...

C - Chemistry, Metallurgy

09

J

117/25, 18/632,

C09J 7/02 (2006.01) D06M 15/00 (2006.01) D06M 17/00 (2006.01)

Patent

CA 1113796

METHOD FOR PRODUCING TEAR TAPE AND SEAL AND TEAR LINE FOR PACKAGING ABSTRACT OF THE DISCLOSURE A seal and tear tape or line is produced by a method wherein selected fibrous yarn is passed into a bath of hot-melt adhesive maintained at a desired temperature. The yarn is spread laterally and tensioned within the bath to cause the adhesive to penetrate and surround the fibrous yarn. The adhesive adhered to the yarn is extruded within the bath to con- trollably reduce the amount and cross-sectional shape of the adhesive coating on the yarn by contact with rollers, one of which is submerged in the adhesive bath or a die partially sub- merged in the adhesive bath. The yarn with an extruded adhesive coating thereon is then cooled by passing through a refrigerated cooling chamber after which the adhesive coating is formed into a desired shape by contact with a chilled-forming surface of superimposed rollers. Reels are then used to coil the coated yarn into spools.

324900

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