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US 2017/0320642 A1Published application
Coffee Bag Vent
AssigneeLaserSharp FlexPak Services, LLC
InventorKenneth Klann
Life of this patent
Estimating the term…
Abstract
A laser formed vent in packaging material, formed by an interior breach and an exterior breach, which are connected to one another by a channel. The next interior breach an exterior breach are laterally offset from one another, the channel is formed by vaporizing a bubble in an interior layer, for example a foil layer. In one embodiment, the bubble can be crushed, but returns to its original configuration.
Claims20
A packaging film with an integrally formed vent, comprising:
- a first layer of interior material;
- a second layer, of metallized layer foil;
- and
- a third layer of exterior material,
- said second layer being between first and third layers,
- at least one of said first layer and said third layer being formed of a material which allows laser to pass without being affected by the laser, and where said material is transmissive to the laser,
- said first layer having an interior breach at a first location,
- said third layer having an exterior breach at a second location laterally offset from said first location, and
- said second layer having a channel formed therein, only in a specified location which extends from said interior breach to said exterior breach, said channel being an area where said metallized layer foil of said second layer is at least partly removed throughout a complete length of the channel,
- and where the channel is expanded relative to a size of said second layer at a location other than said specified location and where the channel is not expanded at locations other than said specified location.
7 more elements
A method of forming packaging film with an integrally formed vent, comprising:
- producing a laser output at a first location through a first layer of plastic material, to a second layer, of metallized layer foil, which is overlaid by a third layer of plastic material,
- creating a second breach in the third layer at a second location laterally offset from said first location;
- said producing creating a breach in the first location and creating a channel in the second layer, only in a specified location which extends from said first breach to said second breach, said channel defining an area which is expanded relative to a size of said second layer at other than said specified location, and forms a bump in said specified location,
- to create a channel as an expanded area between said first breach and said second breach.
1 more element
A packaging film, comprising:
- a first layer of interior material of a plastic that allows laser to pass;
- a second layer including a metallized layer foil;
- and
- a third layer of exterior material of a plastic that allows laser to pass,
- said second layer being between first and third layers,
- said first layer having an interior breach at a first location,
- said third layer having an exterior breach at a second location laterally offset from said first location, and
- said second layer having a channel formed therein, only in a specified location which extends from said interior breach to said exterior breach and which does not extend all the way across said second layer and in the location of the channel where a material of said second layer is at least partly removed and outside of which location of the channel where the second layer is not removed and is intact, said channel being an area which is expanded to form a bump in said first layer and also to form a bump in said third layer in said specified location, to expand a distance between said first and third layers in said specified location,
- said bump formed with embedded parts of said second layer that are embedded into both said first layer and said third layer, and where said first layer in locations other than said specified location not having said embedded parts of said second layer therein.
6 more elements
Dependencies are inferred from the claim text.