US3788271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for applying pressure sensitive adhesive to glass fiber mesh material
Assignee: Perma Glas Mesh Corp
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Filing: 1972-04-14
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Granted: 1974-01-29
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Expires: 1992-04-14
Abstract
Abstract Adhesive coating equipment having an adhesive reservoir heated by circulating electrically heated oil. A first lower hollow roller is mounted above the reservoir having a lower portion immersed in the adhesive contained in the reservoir. A power driven second hollow top roller is mounted above and in contact with the first roller and rotates the first roller transferring adhesive from the reservoir to the first roller and then to the top roller for coating a web passing over the top of the second roller. The rollers are heated by heated oil circulated through the interior of the rollers to maintain the rollers and adhesive at the same temperature and the adhesive at the same viscosity throughout the transfer of adhesive from the reservoir to the web. An idler roller is located adjacent to the lower and top rollers for maintaining at least a predetermined minimum arcuate length of web contact with the second or top roller. A method of applying pressure sensitive adhesive to glass fiber mesh material by passing the mesh material over a heated rotating coating roller. Heated adhesive is applied to the coating roller which is transferred to the mesh material by contact with the roller as the mesh passes over the roller. The length or duration of contact of the mesh material with the coating roller is controlled so that a uniform amount of adhesive is applied to the mesh material. The mesh material is maintained under constant tension as it is payed out from a supply roll and over the coating roller to a collection roll.
Inventors
- 👤 G Carpenter
- 👤 E Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:08
CPC Classifications
B; B05; B05C; B05C1/00; B05C1/04; B05C1/08; B05C1/12; B05C1/003; B05C1/0826; B05C1/0834
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
418 words
In coating equipment for coating hot, fluid, pressure sensitive adhesive primarily on one surface of glass fiber mesh material of a type in which a web of such fiber mesh material is payed out from a supply roll of such material, then is passed under tension over a driven coating roller journalled on a horizontal axis, then passes in a downward direction from the top of the coating roller directly to a windup reel, and then is rewound on the windup reel in roll form; the combination of coating-material-containing reservoir means; a first roller mounted on a horizontal axis below and contacting and driven by the coating roller and partially submerged in hot fluid coating material in the reservoir for transferring hot fluid coating material from the reservoir to the coating roller; means for adjusting the location of the axis of the coating roller with respect to the first roller to control the amount of hot fluid adhesive transferred from the reservoir to the coating roller and coated on the web; means for heating the coating roller and first roller and the coating material to a predetermined hot fluid temperature and maintaining the roller and coating material at the same uniform temperature; control roller means under which the web is engaged and from which the web passes upwardly to the coating roller; said control roller means being located upstream of the coating roller and spaced from and having its axis located below and parallel with the axis of the coating roller to maintain a predetermined minimum length of arcuate contact of the web with the coating roller as the web passes upwards and over the coating roller; said roller arcuate contact length extending at least from the top of said coating roller a predetermined distance along said roller in the upstream direction; the windup reel being located downstream of the coating roller with respect to the direction of web movement and spaced from and having its axis located below and parallel with the axis of the coating roller; the axis of said windup reel being located with respect to the axis of the coating roller that the periphery of the rewound roll of coated web material always is below the top of thee coating roller; and said space between the coating roller and windup reel being free of equipment in contact with the coated traveling web, whereby the web after passing over the coating roller moves downwardly directly to said windup reel and collects in roll form thereon.
Claim 2
Dependent Claim
418 words
In coating equipment for coating hot, fluid, pressure sensitive adhesive primarily on one surface of glass fiber mesh material of a type in which a web of such fiber mesh material is payed out from a supply roll of such material, then is passed under tension over a driven coating roller journalled on a horizontal axis, then passes in a downward direction from the top of the coating roller directly to a windup reel, and then is rewound on the windup reel in roll form; the combination of coating-material-containing reservoir means; a first roller mounted on a horizontal axis below and contacting and driven by the coating roller and partially submerged in hot fluid coating material in the reservoir for transferring hot fluid coating material from the reservoir to the coating roller; means for adjusting the location of the axis of the coating roller with respect to the first roller to control the amount of hot fluid adhesive transferred from the reservoir to the coating roller and coated on the web; means for heating the coating roller and first roller and the coating material to a predetermined hot fluid temperature and maintaining the roller and coating material at the same uniform temperature; control roller means under which the web is engaged and from which the web passes upwardly to the coating roller; said control roller means being located upstream of the coating roller and spaced from and having its axis located below and parallel with the axis of the coating roller to maintain a predetermined minimum length of arcuate contact of the web with the coating roller as the web passes upwards and over the coating roller; said roller arcuate contact length extending at least from the top of said coating roller a predetermined distance along said roller in the upstream direction; the windup reel being located downstream of the coating roller with respect to the direction of web movement and spaced from and having its axis located below and parallel with the axis of the coating roller; the axis of said windup reel being located with respect to the axis of the coating roller that the periphery of the rewound roll of coated web material always is below the top of thee coating roller; and said space between the coating roller and windup reel being free of equipment in contact with the coated traveling web, whereby the web after passing over the coating roller moves downwardly directly to said windup reel and collects in roll form thereon.
Claim 3
Dependent Claim
99 words
The construction defined in claim 1 in which the reservoir means includes walls forming an open top compartment and a separate confined bottom compartment; in which the coating material is contained in the open top compartment; in which the bottom compartment is filled with heat transfer fluid; in which means is provided for heating the fluid in the bottom compartment; in which the first and coating rollers are hollow; and in which conduit means is provided for circulating heated fluid between the hollow rollers and the bottom compartment to maintain the rollers and coating material at the same temperature.
Claim 4
Dependent Claim
71 words
The construction defined in claim 2 in which the conduit means connects the bottom compartment and each of the hollow rollers; in which pump means communicates with the conduit means for circulating the fluid between the hollow rollers and bottom compartment; and in which standpipe means open to the atmosphere communicates with said conduit means to eliminate pressure buildup during circulation of the fluid between the bottom compartment and hollow rollers.
Claim 5
Dependent Claim
41 words
The construction defined in claim 1 in which the coating material is pressure sensitive adhesive material; and in which means is provided to maintain the adhesive coating material and rollers at a temperature between 400* F. and 450* F. duRing coating.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |