Patent US4229400A successfully refreshed from Google Patents.
US4229400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold component comprising a mat impregnated with a reaction product of an aminoplast resin and a polyalkylene glycol
Assignee: Fiberite Inc
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Filing: 1978-09-18
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Granted: 1980-10-21
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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
2026-11-08 06:31
CPC Classifications
B; B41; B41C; B41C3/00; B29; B29D; B29D99/00; B29D99/0032; B29D99/0035; B41D; B41D7/00; B29L; B29L2031/00; B29L2031/32; B29L2031/324; Y; Y10; Y10S; Y10S428/00; Y10S428/908; Y10T; Y10T442/00; Y10T442/20; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
95 words
The method for making printing plates comprising, forming a carrier containing a reactive resin comprising the reaction product of an aminoplast and a resin selected from the group consisting of polyethylene glycol and polypropylene glycol 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
95 words
The method for making printing plates comprising, forming a carrier containing a reactive resin comprising the reaction product of an aminoplast and a resin selected from the group consisting of polyethylene glycol and polypropylene glycol 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
51 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 an aminoplast and a resin selected from the group consisting of polyethylene glycol and polypropylene glycol in a cured condition on a carrier therefor.
Claim 8
Dependent Claim
51 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 an aminoplast and a resin selected from the group consisting of polyethylene glycol and polypropylene glycol in a cured condition on a carrier therefor.
Claim 9
Dependent Claim
86 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 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 the reaction product of aminoplast and a resin selected from the group of polyethylene glycol and polypropylene glycol.
Claim 10
Dependent Claim
86 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 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 the reaction product of aminoplast and a resin selected from the group of polyethylene glycol and polypropylene glycol.
Claim 11
Dependent Claim
108 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 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 resin selected from the group consisting of polyethylene glycol and polypropylene glycol.
Claim 12
Dependent Claim
108 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 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 resin selected from the group consisting of polyethylene glycol and polypropylene glycol.
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
48 words
A printing plate matrix as claimed in claim 8 wherein from 7 parts to 20 parts by weight of said aminoplast to 1 part by weight of said resin selected from the group consisting of said polyethylene glycol and said polypropylene glycol are used in making said resin.
Claim 15
Dependent Claim
33 words
A printing plate matrix as claimed in claim 8 wherein from 9 to 13 parts by weight of said aminoplast to 1 part by weight of the resin of said group are used.
Claim 16
Dependent Claim
26 words
A printing plate matrix as claimed in claim 8 wherein the resin from said group has a molecular weight in the range of 50,000 to 4,000,000.
Claim 17
Dependent Claim
26 words
A printing plate matrix as claimed in claim 8 wherein the resin from said group has a molecular weight in the range of 100,000 to 400,000.
Claim 18
Dependent Claim
15 words
The printing plate matrix as claimed in claim 8 wherein said aminoplast is melamine formaldehyde.
Claim 19
Dependent Claim
18 words
A printing plate matrix as claimed in claim 8 wherein said carrier is a permeable glass fiber mat.
Claim 20
Dependent Claim
19 words
The shaped mold resulting from curing the printing plate matrix as claimed in claim 8 against a polyester material.
Claim 21
Dependent Claim
26 words
A printing plate matrix as claimed in claim 8 wherein the resin from said group has a molecular weight in the range of 100,000 to 200,000.
Claim 22
Dependent Claim
34 words
A mold that can be bent to at least an approximate 15 inch diameter of a printing press cylinder resulting from curing the matrix as claimed in claim 17 in a relatively flat condition.
Claim 23
Independent Claim
82 words
The method of making a molded carrier comprising, reacting the components of an aminoplast resin with a resin selected from the group consisting of polethylene glycol and polypropylene glycol to produce a reaction product, applying the reaction product by hot melt processing to a somewhat porous carrier and allowing the hot melt to cool, and pressing said carrier coated with said reaction product against a mold surface and curing under heat and pressure to produce a hard but somewhat flexible molded carrier.
Claim 24
Independent Claim
82 words
The method of making a molded carrier comprising, reacting the components of an aminoplast resin with a resin selected from the group consisting of polethylene glycol and polypropylene glycol to produce a reaction product, applying the reaction product by hot melt processing to a somewhat porous carrier and allowing the hot melt to cool, and pressing said carrier coated with said reaction product against a mold surface and curing under heat and pressure to produce a hard but somewhat flexible molded carrier.
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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) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |