Patent US1489780A successfully refreshed from Google Patents.
US3559619A
Expired / Lapsed
US
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Apparatus for applying adhesive on strip material
Assignee: Kimberly Clark Corp
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Filing: 1969-02-03
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Granted: 1971-02-02
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Expires: 1989-02-03
Abstract
Abstract A gluing unit for applying liquid adhesive to thin-walled paper tape is disclosed. The unit includes a slotted glue head for applying the adhesive to both sides of the tape and a pair of counterrotating rolls for wiping excess adhesive from the surfaces of the tape. The unit also includes a heat exchanger for heating the glue to make it less viscous and means for flushing the surfaces of the wiping rolls with freshly heated adhesive to carry away the excess adhesive and any foreign matter wiped from the tape.
Inventors
- 👤 Carl W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:42
CPC Classifications
B; B05; B05C; B05C5/00; B05C5/02; B05C5/0241; B05C11/00; B05C11/02; B05C11/023; B05C11/025; B05C11/10; B05C11/1042; B05C9/00; B05C9/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
204 words
Apparatus for applying adhesive to both surfaces of thin strip material comprising, in combination: a source of liquid adhesive; an adhesive fountain defining a slot through which said strip material is adapted to pass; a pump connected by conduit means between said source and fountain for delivering liquid adhesive under pressure through said fountain and over the opposite surfaces of said strip material as it passes through said slot; a pair of closely spaced counterrotating rolls defining a wiping nip disposed substantially in alignment with said slot and located downstream therefrom in the direction of strip movement; means for rotating said rolls such that the peripheries thereof at said nip move opposite to said direction of strip movement for wiping excess adhesive from the surfaces of said strip material; a doctor blade disposed adjacent the periphery of each of said rolls for removing excess adhesive therefrom; said fountain and said rolls being located in a catch basin communicating with said source for returning excess adhesive thereto; and means for directing additional liquid adhesive over the periphery of each of said rolls between said nip and said doctor blade for flushing away said excess adhesive and any foreign matter picked up from said strip material.
Claim 2
Dependent Claim
204 words
Apparatus for applying adhesive to both surfaces of thin strip material comprising, in combination: a source of liquid adhesive; an adhesive fountain defining a slot through which said strip material is adapted to pass; a pump connected by conduit means between said source and fountain for delivering liquid adhesive under pressure through said fountain and over the opposite surfaces of said strip material as it passes through said slot; a pair of closely spaced counterrotating rolls defining a wiping nip disposed substantially in alignment with said slot and located downstream therefrom in the direction of strip movement; means for rotating said rolls such that the peripheries thereof at said nip move opposite to said direction of strip movement for wiping excess adhesive from the surfaces of said strip material; a doctor blade disposed adjacent the periphery of each of said rolls for removing excess adhesive therefrom; said fountain and said rolls being located in a catch basin communicating with said source for returning excess adhesive thereto; and means for directing additional liquid adhesive over the periphery of each of said rolls between said nip and said doctor blade for flushing away said excess adhesive and any foreign matter picked up from said strip material.
Claim 3
Dependent Claim
30 words
Apparatus as defined in claim 1 wherein said conduit means includes a heat exchanger between said pump and said fountain for raising the temperature of the liquid adhesive passing therethrough.
Claim 4
Dependent Claim
36 words
Apparatus as defined in claim 2 wherein said heat exchanger is of the fluid circulating type and said apparatus includes a source of heated fluid and means for circulating said heated fluid through said heat exchanger.
Claim 5
Dependent Claim
42 words
Apparatus as defined in claim 2 including a distribution manifold located in said conduit means between said heat exchanger and said fountain and including valving for controlling the quantity of adhesive delivered to said fountain and to each of said flushing means.
Claim 6
Dependent Claim
37 words
Apparatus as defined in claim 1 wherein each of said rolls is adjustably mounted for movement toward and away from the other of said rolls whereby the spacing and alignment of said nip may be selectively adjusted.
Claim 7
Dependent Claim
24 words
Apparatus as defined in claim 1 including means for adjustably positioning each of said doctor blades relative to the periphEry of its respective roll.
Claim 8
Dependent Claim
31 words
Apparatus as defined in claim 6 wherein said adjusting means includes a biasing element engageable with said respective rolls for adjusting the nip pressure of said rolls on said strip material.
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |