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US4198364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing matrix or mold component formed from an aminoplast resin-polyvinyl alcohol reaction product
Assignee: Fiberite Inc
•
Filing: 1978-09-18
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Granted: 1980-04-15
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Expires: 1998-09-18
Abstract
Abstract A shapeable matrix is provided for use in making of graphic art reproductions and in particular as a mold in forming of printing plates and other marking items.
Inventors
- 👤 William A. Laurie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:05
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0032; B29D99/0035; B29C; B29C39/00; B41; B41C; B41C3/00; B41D; B41D7/00; B29L; B29L2031/00; B29L2031/32; B29L2031/324; Y; Y10; Y10S; Y10S428/00; Y10S428/908; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
85 words
The method of making printing plates comprising, forming a carrier containing a reactive resin comprising the reaction product of an aminoplast resin and polyvinyl alcohol under heat and pressure against a master printing plate so as to produce a cured negative of said master printing plate, inserting said cured negative into a molding device so as to provide a mold insert therein, and flowing a plastic material against said molded negative insert and curing said plastic to produce a copy of said master printing plate.
Claim 2
Independent Claim
85 words
The method of making printing plates comprising, forming a carrier containing a reactive resin comprising the reaction product of an aminoplast resin and polyvinyl alcohol under heat and pressure against a master printing plate so as to produce a cured negative of said master printing plate, inserting said cured negative into a molding device so as to provide a mold insert therein, and flowing a plastic material against said molded negative insert and curing said plastic to produce a copy of said master printing plate.
Claim 3
Dependent Claim
20 words
A method of making printing plates as claimed in claim 1, wherein said master printing plate includes a polyester resin.
Claim 4
Dependent Claim
18 words
A method of making printing plates as claimed in claim 1, wherein said master printing plate is magnesium.
Claim 5
Dependent Claim
22 words
A method of making printing plates as claimed in claim 1, wherein a thermoplastic material is flowed against said molded negative insert.
Claim 6
Dependent Claim
19 words
A method of making printing plates as claimed in claim 1, wherein polypropylene is flowed against said molded negative.
Claim 7
Dependent Claim
82 words
A mold component comprising, a relatively hard plastic sheet having a substantially homogeneous dense structure with formed areas thereon, said mold having been somewhat porous during its forming to permit gases to escape therethrough and having a relatively hard surface after its forming such that the formed areas thereon will take minimal compressive-set upon the molding thereagainst of a plastic material under heat and pressure, said mold component including a reaction product of the components of an aminoplast resin and polyvinyl alcohol.
Claim 8
Dependent Claim
82 words
A mold component comprising, a relatively hard plastic sheet having a substantially homogeneous dense structure with formed areas thereon, said mold having been somewhat porous during its forming to permit gases to escape therethrough and having a relatively hard surface after its forming such that the formed areas thereon will take minimal compressive-set upon the molding thereagainst of a plastic material under heat and pressure, said mold component including a reaction product of the components of an aminoplast resin and polyvinyl alcohol.
Claim 9
Dependent Claim
44 words
A negative printing plate against which a plastic material may be molded under heat and pressure to produce a positive printing plate comprising a reaction product of the components of an aminoplast resin and polyvinyl alcohol in a cured condition on a carrier layer.
Claim 10
Dependent Claim
44 words
A negative printing plate against which a plastic material may be molded under heat and pressure to produce a positive printing plate comprising a reaction product of the components of an aminoplast resin and polyvinyl alcohol in a cured condition on a carrier layer.
Claim 11
Dependent Claim
102 words
A printing plate matrix capable of being shaped under heat and pressure and then being used as a part of a mold for imparting a portion of its shape to a plastic material under heat and pressure comprising, a carrier having a porous characteristic, and a curable resin carried by said carrier capable of receiving very sharply defined impressions on a surface thereof upon molding and being cured, said surface being able to be used as a mold against which another plastic material may be shaped, said resin including a reaction product of the components of an aminoplast resin and polyvinyl alcohol.
Claim 12
Dependent Claim
102 words
A printing plate matrix capable of being shaped under heat and pressure and then being used as a part of a mold for imparting a portion of its shape to a plastic material under heat and pressure comprising, a carrier having a porous characteristic, and a curable resin carried by said carrier capable of receiving very sharply defined impressions on a surface thereof upon molding and being cured, said surface being able to be used as a mold against which another plastic material may be shaped, said resin including a reaction product of the components of an aminoplast resin and polyvinyl alcohol.
Claim 13
Dependent Claim
36 words
A printing plate matrix as claimed in claim 8 wherein said aminoplast is derived from an amino compound taken from the group consisting of urea, thiourea, cyclic ethylene urea, dicyandiamide, melamine and alkyl and aryl melamines.
Claim 14
Dependent Claim
36 words
A printing plate matrix as claimed in claim 8 wherein from 0.75 parts to 2.6 parts by weight of said aminoplast to 1 part by weight of said polyvinyl alcohol are used in making said resin.
Claim 15
Dependent Claim
37 words
A printing plate matrix as claimed in of claim 8 wherein said matrix is cured in a relatively flat condition and can then be bent to at least an approximate 15" diameter of a printing press cylinder.
Claim 16
Dependent Claim
15 words
The printing plate matrix as claimed in claim 8 wherein said aminoplast is melamine formaldehyde.
Claim 17
Dependent Claim
18 words
A printing plate matrix as claimed in claim 8 wherein said carrier is a permeable glass fiber mat.
Claim 18
Dependent Claim
38 words
A printing plate matrix as claimed in either of claims 8 or 9, wherein from 1 to 1.5 parts by weight of said aminoplast to 1 part by weight of polyvinyl alcohol are used in making said resin.
Claim 19
Dependent Claim
25 words
A printing plate matrix as claimed in claims 10 or 11 wherein said polyvinyl alcohol has molecular weight in the range of 2,000 to 120,000.
Claim 20
Dependent Claim
24 words
A printing plate matrix as claimed in claim 15 wherein said polyvinyl alcohol has a molecular weight in the range of 2,000 to 14,000.
Claim 21
Dependent Claim
24 words
A printing plate matrix as claimed in claim 16 wherein said polyvinyl alcohol has a molecular weight in the range of 2,000 to 4,000.
Claim 22
Dependent Claim
19 words
The shaped mold resulting from curing a printing plate matrix as claimed in claim 8 against a polyester material.
Claim 23
Independent Claim
69 words
The method of making a molded carrier comprising, reacting the components of an aminoplast resin with polyvinyl alcohol to produce a reaction product, applying the cured reaction product by hot melt processing to a somewhat porous carrier and allowing the hot melt to cool, and then pressing said coated carrier against a mold surface and curing under heat and pressure to produce a hard but somewhat flexible molded carrier.
Claim 24
Independent Claim
69 words
The method of making a molded carrier comprising, reacting the components of an aminoplast resin with polyvinyl alcohol to produce a reaction product, applying the cured reaction product by hot melt processing to a somewhat porous carrier and allowing the hot melt to cool, and then pressing said coated carrier against a mold surface and curing under heat and pressure to produce a hard but somewhat flexible molded carrier.
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) | 1983-04-15 | 1983-10-15 | 1984-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-15 | 1987-10-15 | 1988-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-15 | 1991-10-15 | 1992-04-15 | $7700.00 | Window Closed / Lapsed |