1. A flexible package comprising:
(a) a package surrounding wall having a mouth providing access to a package interior;
(b) a resealable closure mechanism along said mouth for selective closing and opening of said mouth; said resealable closure mechanism including first and second closure profiles;
(i) said first closure profile including: a first closure member; a first guidepost; a first sealing flange; a first catch integral with said first closure member; and a first shoulder; said first shoulder being between said first guidepost and said first sealing flange; said first closure profile also including a first flange member cantilevered from said first closure profile opposite said first closure member;
(ii) said second closure profile including: a second closure member; a second guidepost; a second sealing flange; a second catch integral with said second closure member; and a second shoulder; said second shoulder being between said second guidepost and said second sealing flange; said first and second catches being constructed and arranged for selective interlocking; said second closure profile also including a second flange member cantilevered from said second closure profile opposite said second closure member; and
(c) a slider device operably mounted on said resealable closure mechanism for selectively closing and opening said resealable closure mechanism by moving said slider device relative to said resealable closure mechanism in opposite first and second directions; said slider device including:
(i) a top wall;
(ii) a first sidewall depending from said top wall; said first sidewall having first and second opposite ends; said first sidewall defining a first slide channel for receiving said first flange member cantilevered from said first closure profile; said first slide channel having a first guide construction for accommodating said first flange member; and said first sidewall is constructed and arranged to slidably engage said first shoulder when said slider device is moved along said resealable closure mechanism;
(iii) a second sidewall depending from said top wall; said second sidewall having first and second opposite ends; said second sidewall defining a second slide channel for receiving said second flange member cantilevered from said second closure profile; said second slide channel having a second guide construction for accommodating said second flange member; and said second sidewall is constructed and arranged to slidably engage said second shoulder when said slider device is moved along said resealable closure mechanism;
(iv) said first and second closure profiles being constructed and arranged to interlock when said slider device is moved in said first direction.
2. The flexible package of claim 1, wherein:
(a) said first slide channel is constructed and arranged to engage said first flange member when said slider device is moved in said second direction; and
(b) said second slide channel is constructed and arranged to engage said second flange member when said slider device is moved in said second direction;
(i) said first and second closure profiles being constructed and arranged to disengage when said slider device is moved in said second direction.
3. The flexible package according to claim 2, wherein:
(a) said first slide channel has a first contoured inner surface; said first contoured inner surface being constructed and arranged to engage said first flange member when said slider device is moved in said second direction; and
(b) said second slide channel has a second contoured inner surface; said second contoured inner surface being constructed and arranged to engage said second flange member when said slider device is moved in said second direction.
4. The flexible package according to claim 3, wherein:
(a) said first contoured inner surface includes a first protrusion located substantially near said first end of said first sidewall; said first protrusion being constructed and arranged to engage said first flange member when said slider device is moved in said second direction; and
(b) said second contoured inner surface includes a second protrusion located substantially near said first end of said second sidewall; said second protrusion being constructed and arranged to engage said second flange member when said slider device is moved in a second direction.
5. The flexible package according to claim 1, wherein:
(a) said first and second sidewalls are tapered such that said first and second closure profiles are biased into engagement when said slider device is moved in said first direction.
6. The flexible package according to claim 1, wherein:
(a) said first and second sidewalls are tapered such that said first and second closure profiles are separated when said slider device is moved in said second direction.
7. The flexible package according to claim 1, wherein:
(a) said first sidewall has a hook construction to slidably cover and engage said first shoulder when said slider device is moved in a second direction; and
(b) said second sidewall has a second hook construction to slidably cover and engage said second shoulder when said slider device is moved in a second direction.
8. A reclosable closure mechanism comprising:
(a) a first closure profile having: a first closure member; a first guidepost; a first sealing flange; a first catch integral with said first closure member; and a first shoulder; said first shoulder being between said first guidepost and said first sealing flange; said first closure profile also including a first flange member cantilevered from said first closure profile opposite said first closure member;
(b) a second closure profile having: a second closure member; a second guidepost; a second sealing flange; a second catch integral with said second closure member; and a second shoulder; said second shoulder being between said second guidepost and said second sealing flange; said first and second catches being constructed and arranged for selective interlocking; said second closure profile also including a second flange member cantilevered from said second closure profile opposite said second closure member; and
(c) a slider device operably mounted on said first and second closure profiles for selectively closing and opening said reclosable closure mechanism by moving said slider device relative to said reclosable closure mechanism in opposite first and second directions; said slider device including:
(i) a top wall;
(ii) a first sidewall depending from said top wall; said first sidewall having first and second opposite ends; said first sidewall defining a first slide channel for receiving said first flange member cantilevered from said first closure profile; said first slide channel having a first guide construction for accommodating said first flange member and said first sidewall is constructed and arranged to slidably engage said first shoulder when said slider device is moved along said resealable closure mechanism;
(iii) a second sidewall depending from said top wall; said second sidewall having first and second opposite ends; said second sidewall defining a second slide channel for receiving said second flange member cantilevered from said second closure profile; said second slide channel having a second guide construction for accommodating said second flange member; and said second sidewall is constructed and arranged to slidably engage said second shoulder when said slider device is moved alone said resealable closure mechanism; and
(iv) said first and second closure profiles being constructed and arranged to interlock when said slider device is moved in said first direction.
9. The reclosable closure mechanism of claim 8, wherein:
(a) said first slide channel is constructed and arranged to engage said first flange member when said slider device is moved in said second direction; and
(b) said second slide channel further being constructed and arranged to engage said second flange member when said slider device is moved in said second direction;
(i) said first and second closure profiles being constructed and arranged to disengage when said slider device is moved in said second direction.
10. The reclosable closure mechanism of claim 9, wherein:
(a) said first slide channel has a first contoured inner surface; said first contoured inner surface being constructed and arranged to engage said first flange member when said slider device is moved in said second direction; and
(b) said second slide channel has a second contoured inner surface; said second contoured inner surface being constructed and arranged to engage said second flange member when said slider device is moved in said second direction.
11. The reclosable closure mechanism according to claim 10, wherein:
(a) said first contoured inner surface includes a first protrusion located substantially near said first end of said first sidewall; said first protrusion being constructed and arranged to engage said first flange member when said slider device is moved in said second direction; and
(b) said second contoured inner surface includes a second protrusion located substantially hear said first end of said second sidewall; said second protrusion being constructed and arranged to engage said second flange member when said slider device is moved in a second direction.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. Method of producing an imaged lithographic printing plate comprising:
(a) imagewise exposing a lithographic printing plate precursor comprising
(i) a substrate,
(ii) a radiation-sensitive coating comprising one or more layers, and
(iii) optionally an oxygen-impermeable overcoat, to radiation for which the radiation-sensitive coating is sensitive;
(b) treating the imagewise exposed precursor with an aqueous developer to remove non-image areas of the radiation-sensitive coating and to provide a protective gumming in a single step, the aqueous developer having a pH value of >6 and comprising
(i) water,
(ii) at least one hydrophilic polymer, comprising:
(m1) structural units derived from at least one compound comprising both a polyalkylene oxide chain and a free radical polymerizable group, which (m1) structural units are present in the hydrophilic polymer in an amount of from 5 weight % to 95 weight %, and
(m2) structural units derived from at least one compound copolymerizable with the free radical polymerizable group of (m1) and comprising at least one acidic group with pKs<5, wherein the acidic functional group(s) can be present as free acid group(s) or in salt form, which (m2) structural units are present in the hydrophilic polymer in an amount of from 5 weight % to 95 weight %,
(iii) optionally at least one member selected from surfactants, alkaline reagents, water-soluble film forming hydrophilic polymers, additives selected from organic solvents, biocides, complexing agents, buffer substances, filter dyes, antifoaming agents, anticorrosive agents and radical inhibitors; and
(c) optionally at least one step selected from rinsing with water, drying, and baking,
wherein the hydrophilic polymer (ii) further comprises structural units (m3) derived from at least one kind of monomer that contains at least one free radical polymerizable group but that does neither contain an acidic group with pKs<5 nor a polyalkylene oxide chain.
2. Method according to claim 1, wherein the radiation-sensitive coating is present on a substrate without interlayer.
3. Method according to claim 1, wherein the radiation-sensitive coating is sensitive to radiation of a wavelength selected from the range of 250 to 750 nm and in (a) the precursor is imagewise exposed to radiation of a wavelength selected from the range of 250 to 750 nm.
4. Method according to claim 1, wherein the radiation-sensitive coating is sensitive to radiation of a wavelength selected from the range of more than 750 to 1200 nm and in (a) the precursor is imagewise exposed to radiation of a wavelength selected from the range of more than 750 to 1200 nm.
5. Method according to claim 1, wherein the hydrophilic polymer (ii) comprises structural units (m1) derived from at least one compound selected from poly(ethylene glycol) methacrylate; poly(ethylene glycol) acrylate; poly(propylene glycol) methacrylate, poly(propylene glycol) acrylate; monoesters of acrylic acid or methacrylic acid with block copolymers of ethylene oxide and propylene oxide; reaction product of 2,4-toluenediisocyanate-terminated polyethylene glycol or polypropylene glycol or block copolymers of polyethylene glycol and polypropylene glycol or poly(ethylene glycol-ran-propylene oxide) with hydroxyethylacrylate, hydroxyethylmethacrylate, or allyl alcohol; monoreaction products of isocyanatoethyl acrylate or isocyanatoethyl methacrylate with polyethylene glycol or polypropylene glycol or block copolymers of polyethylene glycol and polypropylene glycol or poly(ethylene glycol-ran-propylene oxide); reaction products made by esterification or etherification of poly(ethylene glycol) acrylate or poly(ethylene glycol) methacrylate.
6. Method according to claim 1, wherein the hydrophilic polymer (ii) comprises structural units (m2) derived from at least one compound selected from acrylic acid, methacrylic acid, crotonic acid, maleic acid anhydride ring opened with C1 to C6 alcohols, vinyl benzoic acid, vinylphosphonic acid, vinylsulfonic acid, vinylbenzenesulfonic acid, monoester of either hydroxyethyl methacrylate, hydroxyethyl acrylate or allylalcohol of phosphoric acid, monoester of phosphoric acid with ethylene glycol methacrylate or ethylene glycol acrylate, monoester of phosphoric acid with polyethylene glycol methacrylate or polyethylene glycol acrylate, sulfopropyl(meth)acryloylethyl dialkylammonium hydroxide.
7. Method according to claim 1, wherein the hydrophilic polymer (ii) further comprises structural units (m3) derived from at least one monomer selected from acrylamide, n-vinyl pyrrolidone, vinyl acetate, hydroxyethyl acrylate, hydroxyethyl methacrylate and allyl alcohol.
8. Method according to claim 1, wherein the aqueous developer has a pH of 10 to 14.
9. Method according to claim 1, wherein the aqueous developer comprises a surfactant.
10. Method according to claim 1, wherein the aqueous developer comprises an alkaline reagent.
11. Method according to claim 1, wherein the aqueous developer comprises a water-soluble film forming hydrophilic polymer selected from dextrines and sugar alcohols.
12. Method according to claim 1, wherein the precursor comprises an oxygen-impermeable overcoat that is removed between (a) and (b).
13. Method according to claim 1, wherein the method further comprises a preheat step between (a) and (b).
14. Aqueous developer with a pH value >6, comprising at least one hydrophilic polymer as defined in claim 1, and at least one alkaline reagent.
15. The method of claim 1, wherein the precursor comprises an oxygen-impermeable overcoat that is removed during (b) with the aqueous developer.
16. The method of claim 1 wherein, after (b), the precursor is dried without baking or rinsing.
17. The method of claim 1 wherein, after (b), the precursor is rinsed and dried without baking.