Patent US4466164A successfully refreshed from Google Patents.
US4466164A
Expired / Lapsed
US
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Supercalendering apparatus
Assignee: Fujifilm Holdings Corp
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Filing: 1981-06-29
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Granted: 1984-08-21
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Expires: 2001-06-29
Abstract
Abstract A supercalendering apparatus for smoothing the surface of a web by passing it through the nip between a metal roll and an elastic roll is disclosed. The elastic roll is composed of a core metal roll having a first coating made of a fibrous material wound about the core roll and an inorganic filler loaded epoxy resin impregnated in the fibrous material, and a second coating of an inorganic filler loaded epoxy resin formed on the first coating.
Inventors
- 👤 Eiichi Tadokoro
- 👤 Isao Yamamoto
- 👤 Keiji Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:34
CPC Classifications
D; D21; D21G; D21G1/00; D21G1/02; D21G1/0233; B; B29; B29C; B29C43/00; B29C43/32; B29C43/44; B29C43/46; B29C59/00; B29C59/002; B29D; B29D99/00; B29D99/0032; B29D99/0035; F; F16; F16C; F16C13/00; B29C59/02; B29C59/04; B29K; B29K2995/00; B29K2995/0037; B29K2995/0072; B29K2995/0073; B29L; B29L2031/00; B29L2031/32; B29L2031/324
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
93 words
In a supercalendering apparatus for smoothing the surface of a web by passing it through the nip between a metal roll and an elastic roll, the improvement wherein said elastic roll comprises a core metal roll having a first coating made of a fibrous material wound about said core roll and an inorganic filler loaded epoxy resin impregnated in said fibrous material; and a second coating of an inorganic filler loaded epoxy resin having a ground surface and a thickness in a range of 0.5 to 5 mm formed on said first coating.
Claim 2
Dependent Claim
93 words
In a supercalendering apparatus for smoothing the surface of a web by passing it through the nip between a metal roll and an elastic roll, the improvement wherein said elastic roll comprises a core metal roll having a first coating made of a fibrous material wound about said core roll and an inorganic filler loaded epoxy resin impregnated in said fibrous material; and a second coating of an inorganic filler loaded epoxy resin having a ground surface and a thickness in a range of 0.5 to 5 mm formed on said first coating.
Claim 3
Dependent Claim
13 words
The supercalendering apparatus of claim 1 wherein said fibrous material is wound helically.
Claim 4
Dependent Claim
13 words
The supercalendering apparatus of claim 1 wherein said fibrous material is wound cross-helically.
Claim 5
Dependent Claim
27 words
The supercalendering apparatus of claim 1 wherein said fibrous material is wound about said core roll to a thickness in a range of 2 to 50 mm.
Claim 6
Dependent Claim
19 words
The supercalendering apparatus of claim 1 wherein said epoxy resin is of a phenoxy type primarily of formulae: ##STR3##
Claim 7
Dependent Claim
18 words
The supercalendering apparatus of claim 5 further comprising a curing agent provided in combination with said epoxy resin.
Claim 8
Dependent Claim
25 words
The supercalendering apparatus of claim 6 wherein said curing agent is an aliphatic polyvalent amine selected from the group consisting of ethylene-diamine, ethylenetriamine and ethyleneaminopropylamine.
Claim 9
Dependent Claim
22 words
The supercalendering apparatus of claim 1 wherein said epoxy resin has a molecular weight in a range of from 380 to 3750.
Claim 10
Dependent Claim
24 words
The supercalendering apparatus of claim 1 wherein said inorganic filler is a material selected from the group consisting of quartz powder and carbon black.
Claim 11
Dependent Claim
21 words
The supercalendering apparatus of claim 9 wherein said inorganic filler has a particle size in a range of 0.05 to 10μ.
Claim 12
Dependent Claim
31 words
The supercalendering apparatus of claim 10 wherein said inorganic filler is present in a proportion of 50 to 300 parts by weight per 100 parts by weight of said epoxy resin.
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) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |