Pressurized construction adhesive applicator system

Patent metadata

Field	Value
Publication number	US-2019366366-A1
Application number	US-201816478053-A
Country	US
Kind code	A1
Filing date	Jan 17, 2018
Priority date	Jan 19, 2017
Publication date	Dec 5, 2019
Grant date	—

Abstract

A structural moisture-cured polyurethane adhesive is provided in a pressurized container (60) that is formulated to meet the structural requirements of wall and floor construction for the manufactured housing and recreational vehicle industry, and is designed to bond flooring to joists, wallboard to stud and header framing, as well as other structural applications. The pressurized container (60) allows for adhesive application on horizontal and vertical surfaces without any outside pumps or motors. The pressurized container (60) is portable and may be moved around the structure and/or manufacturing plant. The pressurized container (60) has a hose (64) and applicator gun (20) attached to it, where a trigger (42) on the gun (20) is depressed to dispense the adhesive. The adhesive flows consistently from the pressurized container (60), and the gun (20) is adjustable to regulate bead size for consistent placement of a bed of adhesive, which is an improvement over manual operated caulking guns.

First claim

1 . A pressurized construction adhesive applicator system comprising:
a canister having a volume; a one-part curable construction adhesive in the volume; a lid forming a seal with said canister; an applicator wand having a trigger in fluid communication with said one-part curable construction adhesive via a tube; and a pressurant in the volume in an amount sufficient to urge said one-part curable construction adhesive from the volume and out of a nozzle of said applicator as a bead with depression of said trigger.

2 . The system of claim 1 wherein said canister is formed of steel.

3 . The system of claim 1 wherein the volume is between 1 and 10 liters.

4 . The system of claim 1 wherein said one-part construction adhesive is a moisture curing polyurethane.

5 . The system of claim 1 wherein said one-part construction adhesive is substantially free of volatile organic compounds (VOC) solvent.

6 . The system of claim 1 wherein said one-part construction adhesive is substantially free of a blowing agent.

7 . The system of any one of claim 1 wherein said one-part construction adhesive is substantially free of both VOC solvent and a blowing agent.

8 . The system of any one of claim 1 wherein said pressurant is nitrogen.

9 . The system of claim 1 wherein said pressurant is preloaded in the volume and no mechanical pump is in fluid communication with said one-part construction adhesive.

10 . The system of any one of claim 1 wherein said one-part construction adhesive has a viscosity of 2,000 to 5,000 centipoise for said one-part construction adhesive.

11 . The system of claim 1 wherein said one-part construction adhesive further comprises at least one additive of: a filler, a curative, a defoamer, and a dye, and a diluent to reduce viscosity.

12 . The system of claim 11 wherein said dye is reactive.

13 . The system of claim 1 wherein said canister further comprises at least one barrier between said one-part construction adhesive and said pressurant of: a bag containing said one-part construction adhesive, a diaphragm, or a plenum.

14 . A process of making an applicator system of claim 1 comprising:
adding to a metal canister with between 4.2 and 4.6 liters of a one-part construction adhesive substantially devoid of VOC solvent and blowing agent;
sealing said canister with a lid;
pressurizing said canister with a pressurant via a gas fitting, said gas fitting adapted to couple to a tube terminating in a distal applicator having a trigger.

15 . The process of claim 14 further comprising coupling said tube to said gas fitting.

16 . A process of using the pressurized construction adhesive applicator system of claim 1 comprising:
adjusting the nozzle to control bead size of dispensed adhesive;
aligning the nozzle to a surface to be joined to;
depressing said trigger to dispense the adhesive; and
moving the nozzle to form a bead line.

17 . The process of claim 16 further comprising making interior partition walls in manufactured home production by applying a 0.15 cm to 0.31 cm bead of the adhesive on a set of studs and headers with a gypsum wallboard applied over the studs, and then mechanically fastening the gypsum wallboard.

18 . The process of claim 16 further comprising decoupling the applicator wand from the canister and recycling the canister.

Assignees

• Illinois Tool Works

Inventors

• Cauthen Glen Allen
• Atwater Michael N
• Walnut Frederick P

Classifications

• B05B9/0894

  Gun with a container which, in normal use, is located above the gun · CPC title

• B65D83/756

  comprising connectors, e.g. for tyre valves, or actuators connected to the aerosol container by a flexible tube · CPC title

• B05B9/0805 Primary

  comprising a pressurised or compressible container for liquid or other fluent material (B05B9/085 takes precedence) · CPC title

• B05B1/3046

  the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice (B05B1/308 takes precedence) · CPC title

• B65D83/207

  Operations & Transport · mapped topic