Method of sealing a bag for containing a bale of compressible material

Patent metadata

Field	Value
Publication number	US-10301075-B2
Application number	US-201715618943-A
Country	US
Kind code	B2
Filing date	Jun 9, 2017
Priority date	Jun 13, 2016
Publication date	May 28, 2019
Grant date	May 28, 2019

Abstract

A sealing patch for a polymeric bag includes a carrier, a pressure sensitive adhesive on the carrier and a heat-activated material on the pressure sensitive adhesive. A high-strength polymeric bag is formed from woven tapes and is coated with a polymer material. The sealing patch is positioned on the bag for sealing the bag. A method for sealing a high-strength polymeric bag with a sealing patch and a device for sealing a polymeric bag with a sealing patch are disclosed.

First claim

What is claimed is:

1. A method for sealing a bag formed from a polymeric base material having a polymeric coating material on an outer surface of the base material, one end of the bag having a pair of first and second opposing major flaps and a pair of minor flaps between the first and second major flaps, the coating material have a melting point less than a melting point of the base material, the bag further including a sealing patch having a pressure sensitive adhesive side and a heat-activated material side, the pressure sensitive adhesive side of the sealing patch adhered onto the coating material of the first major flap, the method comprising:
filling the bag with compressible material and, afterwards, closing the end of the bag by:
folding the minor flaps inward;
folding the first major flap inward onto the minor flaps;
folding the second major flap inward onto the first major flap so as to overlie the sealing patch;
contacting the second major flap with a heater; and
activating the heater to heat the sealing patch through the coating material and the base material of the second major flap such that the heat-activated material of the sealing patch activates and adheres the first and second major flaps to one another.

2. The method of claim 1 , wherein activating the heater comprises activating the heater to heat the heat-activated material of the sealing patch to a temperature of about 325 degrees Fahrenheit to about 375 degrees Fahrenheit.

3. The method of claim 1 , further comprising, after the first and second major flaps are adhered to one another, activating a cooler to direct air onto the bag to cool the bag.

4. The method of claim 1 , wherein a heat-sealing device comprises a compression element and the heater, the method further comprising contacting the second major flap with the compression element.

Assignees

• Signode Ind Group Llc

Inventors

• Chhiber Gurpreet
• Bruzzesi Kevin A
• Maneri Patricia Chidiac
• Lininger Joseph E
• Pearson Timothy B

Classifications

• C09J2409/00

  Presence of diene rubber · CPC title

• C09J2201/606

  Chemistry & Metallurgy · mapped topic

• C09J2201/36

  Chemistry & Metallurgy · mapped topic

• B65D33/20 Primary

  using pressure-sensitive adhesive · CPC title

• B65B51/062

  to the mouths of bags · CPC title