Dust-free sealer for valva bags
OwnerJames Deaninventor
Life of this patent
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Abstract
The invention provides for a sealing device for a valve bag. The sealing device has two sections separated by a perforated seam. Each section is secured to one side of the valve channel and has an adhesive surface covered by a protective sheet. The two sections are perforated by the filling tube when the valve bag is filled, once the valve bag is filled the protective sheet is cleaned and removed and the two sections of the sealing device are pressed together and secured by the interaction of their adhesive surfaces.
Claims24
A sealing device for sealing a valve channel of a valve bag, the device comprising:
- a sheet of flexible material having a first section and a second section at opposed ends of the sheet, wherein the sheet is sufficiently flexible such that the first section is foldable over the second section;
- a first adhesive underlying at least one section of the sheet;
- a second adhesive on an upper surface of at least one section of the sheet;
- and
- a removable upper protective sheet covering the second adhesive.
A sealing device for a valve channel of a valve bag, the device comprising:
- two inside sections having a first adhesive coating an inner surface of said inside sections;
- two outside sections having a second adhesive coating an outer surface of said outer sections;
- and
- a removable protective sheet covering the adhesive coating of said outer surface of said outer sections.
A sealing device for sealing a valve channel of a valve bag, the device comprising:
- a sheet of flexible material having a first section and a second section at opposed ends of the sheet, wherein the sheet is sufficiently flexible such that the first section is foldable over the second section;
- a first adhesive coating a lower surface of the first section of the sheet;
- a first removable protective sheet covering the first adhesive;
- a second adhesive coating a lower surface of the second section of the sheet;
- and
- a second removable protective sheet covering the second adhesive.
A valve bag having a tubular body and a valve channel, wherein the improvement includes a sealing device comprising:
- a sheet of flexible material having a first section and a second section at opposed ends of the sheet, wherein the sheet is sufficiently flexible such that the first section is foldable over the second section;
- a first adhesive underlying the sheet, such adhesive securing the backside of the first section to an underside of a top side of the valve channel and the backside of the second section to the upper side of the bottom side of the valve channel;
- a perforated seam located between the first section and the second section of the sheet and substantially centered in the valve channel;
- a second adhesive overlaying an upper surface of the first and second sections of the sheet;
- and
- a removable upper protective sheet covering the second adhesive;
- whereby when the protective sheet is removed from the second adhesive on the upper surface of the first and second sections, the top side of the first section is folded over the top side of the second section of the sheet and the first and second sections are pressed together such that the valve channel is sealed by the interaction between the second adhesive on the upper surface of the first section with the second adhesive on second section.
A process of sealing a valve bag comprising the steps of:
- (a) removing a filler tube from a valve channel in the valve bag, the valve bag having a tubular body, a valve channel, and a sealing device comprising:
- a sheet of flexible material having a first section and a second section at opposed ends of the sheet, wherein the sheet is sufficiently flexible such that the first section is foldable over the second section,
- a first adhesive underlying the sheet, such adhesive securing the backside of the first section to an underside of a top side of the valve channel and the backside of the second section to the upper side of the bottom side of the valve channel,
- a perforated seam located between the first section and the second section of the sheet and substantially centered in the valve channel,
- a second adhesive overlaying an upper surface of the first and second sections of the sheet, and
- a removable upper protective sheet covering the second adhesive;
- (b) removing the protective sheet from the second adhesive on the upper surface of the first and second sections;
- (c) folding the top side of the first section over the top side of the second section;
- (d) pressing the second adhesive on the top side of the first section against the second adhesive on the top side of the second section to seal the valve channel.
Dependencies are inferred from the claim text.