US4460348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing a two-piece paper container
Assignee: NIHON DIXIE Co Ltd 1-13 TARANOMON 4-CHOME MINATO-KU TOKYO JAPAN
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Filing: 1981-06-03
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Granted: 1984-07-17
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Expires: 2001-06-03
Abstract
Abstract A method for producing two-piece paper containers having waterproofness, water repellency, permeability and good stiffness without using any adhesive. A container body wall member and a container bottom panel member are blanked out from a base paper made from a stock containing about 10 to about 80% by weight of high-density polyethylene synthetic pulp. The blanked members are fabricated into a container using a conventional cup-making machine without using any adhesive. Then, the so-fabricated containers are heated at a temperature between about 120° C. and about 300° C. for a short period of time.
Inventors
- 👤 Akira Iioka
- 👤 Shoichi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:49
CPC Classifications
B; B31; B31B; B31B50/00; B31B50/74; B31B50/742; B31B2105/00; B31B2120/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
78 words
A method for producing a two-piece container consisting of blanking a container body wall member and a container bottom panel member from a base paper made of a stock containing about 10 to about 80% by weight of high-density polyethylene synthetic pulp; fabricating the members into a container using a conventional cup-making machine; and then increasing the water proofness, water-repellency or stiffness by heating the so-fabricated whole container at a temperature between 120° C. and about 300° C.
Claim 2
Independent Claim
78 words
A method for producing a two-piece container consisting of blanking a container body wall member and a container bottom panel member from a base paper made of a stock containing about 10 to about 80% by weight of high-density polyethylene synthetic pulp; fabricating the members into a container using a conventional cup-making machine; and then increasing the water proofness, water-repellency or stiffness by heating the so-fabricated whole container at a temperature between 120° C. and about 300° C.
Claim 3
Dependent Claim
22 words
A method according to claim 1 wherein the members are fabricated into the container by only heat sealing without using any adhesive.
Claim 4
Independent Claim
94 words
A method for producing a two-piece paper container which comprises: heating a base paper to the extent that its heat-sealability is not impaired, said base paper being made of a stock containing about 10 to 80% by weight of high-density polyethylene synthetic pulp; blanking a container body wall member and a container bottom panel member from the base paper; fabricating the members into a container using a conventional cup-making machine; and then increasing the water-proofness, water-repellency or stiffness by heating the so-fabricated whole container at a temperature between about 120° C. and 300° C.
Claim 5
Independent Claim
94 words
A method for producing a two-piece paper container which comprises: heating a base paper to the extent that its heat-sealability is not impaired, said base paper being made of a stock containing about 10 to 80% by weight of high-density polyethylene synthetic pulp; blanking a container body wall member and a container bottom panel member from the base paper; fabricating the members into a container using a conventional cup-making machine; and then increasing the water-proofness, water-repellency or stiffness by heating the so-fabricated whole container at a temperature between about 120° C. and 300° C.
Claim 6
Dependent Claim
22 words
A method according to claim 3 wherein the members are fabricated into the container only by heat sealing without using any adhesive.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |