Patent US4521466A successfully refreshed from Google Patents.
US4521466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular seal coating
Assignee: Baxter International Inc
•
Filing: 1983-09-12
•
Granted: 1985-06-04
•
Expires: 2003-09-12
Abstract
Abstract A cellular seal coating is provided for uses such as assembling composite packages, which cellular seal coating is formed by electrostatically depositing finely divided, electrostatically chargeable bonding agent particles onto a preassembly member. Such bonding agent particles include a chemical blowing or foaming agent or system which forms gas bubbles when heated or otherwise energized in order to alter the thickness and strength of the seal coating so that it may, for example, fill gaps along assembly locations of a package or other article.
Inventors
- 👤 Leonard A. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:59
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/02; B05D1/04; B05D1/06; B05D3/00; B05D3/02; B05D3/0254; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/24; Y10T428/24355; Y10T428/24446; Y10T428/24455; Y10T428/24463; Y10T428/249921; Y10T428/249953
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
115 words
A solventless method for providing seal coatings, comprising: formulating a bonding composition, including finely divided, electrostatically chargeable bonding agent particles that are activatable to a state at which the bonding agent particles adhere preassembly members together, said bonding agent composition further including a blowing agent that develops gas bubbles when the bonding composition is activated to said state at which the bonding agent particles adhere preassembly members together; electrostatically depositing said bonding composition onto a preassembly member; and activating said deposited bonding composition in order to seal said preassembly member with a cellular bond, said activating step including activating said blowing agent within the bonding composition to thereby impart cellular properties to said cellular bond.
Claim 2
Dependent Claim
115 words
A solventless method for providing seal coatings, comprising: formulating a bonding composition, including finely divided, electrostatically chargeable bonding agent particles that are activatable to a state at which the bonding agent particles adhere preassembly members together, said bonding agent composition further including a blowing agent that develops gas bubbles when the bonding composition is activated to said state at which the bonding agent particles adhere preassembly members together; electrostatically depositing said bonding composition onto a preassembly member; and activating said deposited bonding composition in order to seal said preassembly member with a cellular bond, said activating step including activating said blowing agent within the bonding composition to thereby impart cellular properties to said cellular bond.
Claim 3
Dependent Claim
19 words
The method of claim 1, wherein said electrostatic depositing step includes depositing said bonding composition in a predetermined pattern.
Claim 4
Dependent Claim
16 words
The method of claim 1, wherein said activating step includes heating said electrostatically deposited bonding composition.
Claim 5
Dependent Claim
15 words
The method of claim 1, wherein said formulating step includes selecting dielectric bonding agent particles.
Claim 6
Dependent Claim
21 words
The method of claim 1, wherein said blowing agent is an inorganic system that liberates a gas during said activating step.
Claim 7
Dependent Claim
21 words
The method of claim 1, wherein said blowing agent includes an organic chemical that liberates a gas during said activating step.
Claim 8
Dependent Claim
31 words
The method of claim 1, wherein said formulating step includes adding between about 0.05 and 5.0 weight percent of said blowing agent, based on the total weight of said bonding composition.
Claim 9
Dependent Claim
117 words
An article having a seal coating formed by a method comprising: formulating a bonding composition, including finely divided, electrostatically chargeable bonding agent particles that are activatable to a state at which the bonding agent particles adhere preassembly members together, said bonding composition further including a blowing agent that develops gas bubbles when the bonding composition is activated to said state at which the bonding agent particles adhere preassembly members together; electrostatically depositing said bonding composition onto a preassembly member; and activating said deposited bonding composition in order to seal said preassembly member with a cellular bond, said activating step including activating said blowing agent within the bonding composition to thereby impart cellular properties to said cellular bond.
Claim 10
Dependent Claim
117 words
An article having a seal coating formed by a method comprising: formulating a bonding composition, including finely divided, electrostatically chargeable bonding agent particles that are activatable to a state at which the bonding agent particles adhere preassembly members together, said bonding composition further including a blowing agent that develops gas bubbles when the bonding composition is activated to said state at which the bonding agent particles adhere preassembly members together; electrostatically depositing said bonding composition onto a preassembly member; and activating said deposited bonding composition in order to seal said preassembly member with a cellular bond, said activating step including activating said blowing agent within the bonding composition to thereby impart cellular properties to said cellular bond.
Claim 11
Dependent Claim
19 words
The article of claim 8, wherein said electrostatic depositing step includes depositing said bonding composition in a predetermined pattern.
Claim 12
Dependent Claim
16 words
The article of claim 8, wherein said activating step includes heating said electrostatically deposited bonding composition.
Claim 13
Dependent Claim
15 words
The article of claim 8, wherein said formulating step includes selecting dielectric bonding agent particles.
Claim 14
Dependent Claim
21 words
The article of claim 8, wherein said blowing agent is an inorganic system that liberates a gas during said activating step.
Claim 15
Dependent Claim
21 words
The article of claim 8, wherein said blowing agent includes an organic chemical that liberates a gas during said activating step.
Claim 16
Dependent Claim
31 words
The article of claim 8, wherein said formulating step includes adding between about 0.05 and 5.0 weight percent of said blowing agent, based on the total weight of said bonding composition.
Claim 17
Dependent Claim
84 words
An article having a seal coating, comprising: an assembly member having a panel that includes a seal coating thereon, said seal coating being a cellular bond that includes a bonding agent having gaseous cells interspersed therewithin; and said cellular bond is formed from a bonding composition including bonding agent particles and a blowing agent that develops gas bubbles when the bonding composition is activated to a state at which said bonding agent particles form the seal coating, said bonding agent particles being electrostatically chargeable.
Claim 18
Dependent Claim
84 words
An article having a seal coating, comprising: an assembly member having a panel that includes a seal coating thereon, said seal coating being a cellular bond that includes a bonding agent having gaseous cells interspersed therewithin; and said cellular bond is formed from a bonding composition including bonding agent particles and a blowing agent that develops gas bubbles when the bonding composition is activated to a state at which said bonding agent particles form the seal coating, said bonding agent particles being electrostatically chargeable.
Claim 19
Dependent Claim
42 words
The seal coating article of claim 15, including a plurality of said panels having respective surfaces thereof butting against each other and including gaps at locations between said butting respective surfaces, said gaps being substantially filled with said seal coating cellular bond.
Claim 20
Dependent Claim
52 words
The seal coating article of claim 15, wherein said article is a package having a plurality of assembly members, one assembly member being thermoformed and the other assembly member being a substantially flat closure member, and wherein said seal coating cellular bond is located along a sealing lip between said assembly members.
Claim 21
Dependent Claim
14 words
The seal coating article of claim 15, wherein said article is a packaging pouch.
Claim 22
Dependent Claim
42 words
The seal coating article of claim 15, wherein said article includes a plurality of panels bonded together by said cellular seal coating, and said cellular bond is a peelable seal having a bonding strength that is weaker than either of said panels.
References Cited (Backward Citations)
US2872965A
Cited
US3213071A
Cited
US3207646A
Cited
US3303954A
Cited
US3380866A
Cited
US3650880A
Cited
US3687774A
Cited
US3806566A
Cited
US3649731A
Cited
US3649324A
Cited
US3829343A
Cited
US3906134A
Cited
US3906134B1
Cited
US3834962A
Cited
US3941633A
Cited
US4053545A
Cited
US4022643A
Cited
US4022943A
Cited
US4273820A
Cited
US4414354A
Cited
US4182641A
Cited
US4302272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-03 | 1988-12-03 | 1989-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-03 | 1992-12-03 | 1993-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-03 | 1996-12-03 | 1997-06-04 | $7700.00 | Window Closed / Lapsed |