CN204875378U - Coating craft paper is used to packing tied in a bundle - Google Patents
Coating craft paper is used to packing tied in a bundle Download PDFInfo
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- CN204875378U CN204875378U CN201520468036.2U CN201520468036U CN204875378U CN 204875378 U CN204875378 U CN 204875378U CN 201520468036 U CN201520468036 U CN 201520468036U CN 204875378 U CN204875378 U CN 204875378U
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Abstract
The utility model provides a coating craft paper is used to packing tied in a bundle, coating craft paper is used to packing tied in a bundle includes: the coating layer, surface course, sandwich layer, bottom and the starch glueing layer that connect gradually, wherein, the sandwich layer is the mixed slurry layer, the surface course is bleaching chemical [wood] pulp layer, the bottom is 100% true qualities wood pulp layer, the thickness more than or equal to of sandwich layer the thickness sum of surface course and bottom. The utility model discloses make the printing performance that the existing ivory board of coating craft paper is used to packing tied in a bundle is good, also have the high tearability of craft paper simultaneously.
Description
Technical field
The utility model relates to packaging field, is specifically related to a kind of bundling package coated craft paper.
Background technology
At present, in order to make to have the good printing performance of art post paperboard, also have craft paper height tearability, bundling package coated craft paper adopts the different wood pulp layer of multilayer usually simultaneously, but the proportioning of existing each wood pulp layer is unreasonable, cause the bulk strength of coated craft paper inadequate.
In sum, in prior art, there is following problem: in coated craft paper, the thickness ratio of each wood pulp layer is unreasonable, cause the tearing strength of coated craft paper inadequate.
Utility model content
The utility model provides a kind of bundling package coated craft paper, unreasonable with the proportioning solving each wood pulp layer in coated craft paper, causes the problem that the tearing strength of coated craft paper is inadequate.
For this reason, the utility model proposes a kind of bundling package coated craft paper, described bundling package coated craft paper comprises: the coating layer connected successively, surface layer, sandwich layer, bottom and starch glue application layer, wherein, described sandwich layer is mixed slurry layer, described surface layer is bleached wood pulp layer, and described bottom is 70-100% true qualities wood pulp layers.
Further, the thickness of described sandwich layer is more than or equal to the thickness sum of described surface layer and bottom.
Further, the thickness range of described sandwich layer is: 60-350um.
Further, described coating layer comprises: the finishing coat connected successively, floating coat and primary coat glue application layer, and wherein, primary coat glue application layer covers on described surface layer.
Further, the thickness of described coating layer is less than the thickness of described surface layer and the thickness of described bottom.
Further, the thickness of described starch glue application layer is less than the thickness of described surface layer and the thickness of described bottom.
Further, the thickness range of described surface layer is: 25-80um.
Further, the thickness range of described bottom is: 60-300um.
The utility model have employed the coating layer connected successively, surface layer, sandwich layer, bottom, with starch glue application layer totally 5 Rotating fields, wherein, described sandwich layer is mixed slurry layer, described surface layer is bleached wood pulp layer, described bottom is 100% true qualities wood pulp layer, the thickness of described sandwich layer is more than or equal to the thickness sum of described surface layer and bottom, like this, sandwich layer is made to be the primary thickness layer of bundling package coated craft paper, and surface layer, sandwich layer, the printing performance that the proportion relation of these three kinds of pulp layers of bottom makes the existing art post paperboard of bundling package coated craft paper good, also there is craft paper height tearability simultaneously.
In addition, because bottom reaches certain thickness, such as, the thickness range of bottom is: 60-300um, like this, makes MD (horizontal tear strength) be not less than 4900mn, CD (longitudinal tear strength) is not less than 5500mn, and improves humidity resistance.And the raising of integral thickness due to bundling package coated craft paper, too increase deflection.
In addition, due to the proportioning thickness of each layer of the present utility model, water absorbent surface front is not more than 30g/ ㎡, and back side water suction is not more than 35g/ ㎡, deflection: laterally (MD) is 18.5mNm, and longitudinally (MD) is 7.8mNm.Physical index will be not more than 50g/ ㎡ well below now general standard front face, back side water suction is not more than 100g/ ㎡.Add the requirement of dioxygen waterside infiltration simultaneously.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of bundling package coated craft paper of the present utility model
Drawing reference numeral illustrates:
1, coating layer 2, surface layer 3, sandwich layer 4, bottom 5, starch glue application layer 6, finishing coat 7, floating coat 8, primary coat glue application layer
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and the utility model is described.
The utility model provides a kind of bundling package coated craft paper, may be used for beverage, beer, dairy products, frozen food, field of leisure food.As shown in Figure 1, bundling package coated craft paper is sandwich construction, and bundling package coated craft paper comprises: the coating layer 1 connected successively, surface layer 2, sandwich layer 3, bottom 4, starch glue application layer 5.Coating layer 1 on the upper strata of surface layer 2, surface layer 2 between coating layer 1 and sandwich layer 3, sandwich layer 3 between surface layer 2 and bottom 4, bottom 4 between sandwich layer 3 and starch glue application layer 5, undermost is starch glue application layer.Wherein bundling package coated craft paper adopts four folded nets to manufacture paper with pulp, and use 100% Original Pulp, surface layer is bleached wood pulp, and wherein bleached chemical hardwood pulp accounts for 20%-80%, and bleached chemical softwood pulp accounts for 20%-80%; Sandwich layer is mixed slurry, and wherein true qualities wood pulp accounts for 30%-70%, and groundwood pulp accounts for 30%-70%; Bottom is 70%-100% true qualities wood pulps, such as, be 100% true qualities wood pulp.Bundling package coated craft paper front is coating layer 1, and may be used for printing and packaging, the bundling package coated craft paper back side is starch glue application layer 5, in order to directly wrap up food to be packaged or article or with food to be packaged or article contacts.
Coating layer 1 comprises: the finishing coat 6 connected successively, floating coat 7 and primary coat glue application layer 8.Wherein finishing coat 6, floating coat 7 are made up of china clay, calcium carbonate, binder, primary coat glue application layer, wherein finishing coat 6 floating coat 7 by china clay, calcium carbonate, binder composition, if wherein with china clay, calcium carbonate, binder with 100 parts of weighing scale china clay 20-80 weight portions, calcium carbonate 9-20 part weighing scale, binder 1-5 part weighing scale.Wherein primary coat glue application layer is made up of china clay, calcium carbonate, binder, Sizing, if these four with 100 points of weighing scales, Sizing is adopted to be the acid applying glue of gum rosin, sizing agent adding proportion is about 5-15 part weighing scale, china clay 20-80 weight portion, calcium carbonate, 9-20 part weighing scale, binder 1-5 part weighing scale.
China clay in the filler of the finishing coat 6 in the utility model is made up of the superfine china clay of average diameter at 0.5-2um, and whiteness, more than 80%, adopts the production method of water washing cleaning simultaneously, ensures that finishing coat has higher whiteness and brightness.Calcium carbonate, whiteness 98%, granularity 0.1-2um.
Floating coat 7 in the utility model is identical with finishing coat 6 composition, and just floating coat 7 coats after finishing coat 6 dries.
China clay in the filler of the primary coat 8 in the utility model is made up of the superfine china clay of average diameter at 0.5-2um, and whiteness, more than 80%, adopts the production method of water washing cleaning simultaneously, ensures that finishing coat has higher whiteness and brightness.Calcium carbonate, whiteness 98%, granularity 0.1-2um.Wherein internal sizing is carried out in primary coat, adopts gum rosin acidity to execute or neutral rosin applying glue in applying glue.The mode of neutral sizing adopts minimizing aluminum sulfate or partial cation resin to replace aluminum sulfate to do precipitating agent, to improve the PH that applying glue is.
The quantitative of described bundling package coated craft paper is 175-450g/ ㎡, wherein the scope of surface layer is at 20-45g/ ㎡, the grammes per square metre scope of described sandwich layer is at 25-100g/ ㎡, the grammes per square metre scope of described bottom is at 50-260g/ ㎡, top sizing amount is 1.2-5.4g/ ㎡, and the coating weight of described face-coating layer of cloth is at 10-40g/ ㎡.
Original Pulp in the utility model in surface layer 2 adopts external import, and surface layer is bleached wood pulp, and wherein bleached chemical hardwood pulp accounts for 20%-80%, and bleached chemical softwood pulp accounts for 20%-80%;
The utility model center core layer 3 mixed slurry, wherein true qualities wood pulp accounts for 30%-70%, and groundwood pulp accounts for 30%-70%.
In the utility model, bottom 4 adopts 100% true qualities wood pulp.
The utility model floating coat layer of cloth adopts painting process totally four (positive three anti-one) dispense tip, and positive three represent: surface layer precoating+twice finishing coat+once carry on the back painting.Coating machine is distributed in body paper surface with making coating stable homogeneous, thus obtains perfect printing quality.Improve the form and aspect, whiteness, water absorbing properties, glossiness, ink absorption, smoothness, surface strength, roughness etc. of improving paper, improve paper printing adaptability.
What in the utility model, front applying glue and back side applying glue adopted is oxidized starch.
The operation that the utility model manufactures bundling package coated craft paper comprises that adopt import or that domestic beating degree is come by the pumping of slip house machine chest at the commercial wood pulp of 30-38 starch adhesive, core slurry, prime cement deliver to respective pulping system respectively; Then send into mill stock mixing system, mill stock mixing system adopt conical refiner, make fiber produce distortion, profit rise, cuts off and fibrillating place act on after, to control slurry in online worry water-based; It is shaping that the fiber entering refining system enters optiFlo dilution water head box wet end; Then through press section three press-dehydrating, three press-dehydratings are respectively: a pressure is blind drilled press, and two pressures are American shoe press, three pressures are press polish; Guarantee that entering oven dry portion after paper has carried out effective dehydration carries out front baking drying, page surface applying glue, the dry rear employing of post-drying hard press polish adjustment paper sheet thickness, enters coating system; Be coated with rear soft calendaring and carry out finishing.After online DCS, QCS on-line detecting system, adopt rewinding machine to batch, after carry out cutting warehouse-in.
Produce coated craft paper many employings three net or four net mechanism, face, sandwich layer use bleached wood pulp, and bottom uses true qualities pins to manufacture paper with pulp, after carry out surface layer coating, bottom applying glue, to realize the production of coated craft paper.Boundling coating ox card is from the different of traditional processing technology, in production process except prime cement uses true qualities pin, also employs the true qualities pin of higher proportion in the core, more brings more outstanding paper strength while environmental protection.Meanwhile, for adapting to this packing of product requirement, continuing to use the glue-applying technique of liquid packaging paperboard aborning, making product obtain excellent water resistance, become paper anti-water suction, anti-limit penetrating power strong.
Compared with traditional coated craft paper: tearing degree is as the important indicator of bundling package coated craft paper, bundling package coated craft paper of the present utility model is for 300g coated craft paper, gross thickness 390um, coating layer: 50um, surface layer 40um, sandwich layer 150um, bottom: 140um, starch glue application layer: 10um, its physical index parameter MD (horizontal tear strength) is not less than 4900mn, be such as 4907mn, CD (longitudinal tear strength) is not less than 5500mn, be such as 5682mn, water absorbent surface front is not more than 30g/ ㎡, back side water suction is not more than 35g/ ㎡, deflection: laterally (MD) is 18.5mNm, longitudinally (MD) is 7.8mNm.Physical index will be not more than 50g/ ㎡ well below now general standard front face, back side water suction is not more than 100g/ ㎡.Add the requirement of dioxygen waterside infiltration simultaneously.Therefore, this specification paper is suitable for the bundling package use of low temperature dairy products, frozen food or normal temperature.More traditional coated paper has the feature of protection against the tide, anti-freezing, high tearing degree.
The thickness of this paper is thicker simultaneously, and deflection is high, and the shaping bandwagon effect of commodity packaging is good.
Simultaneously printing effect comparatively minitype corrugation to get well, also save the utilization rate of forest, the buying of wood pulp is simultaneously generally external wood pulp, plays a protective role to the forest reserves of this country simultaneously.
Compared with traditional formula, coating layer of the present utility model does not add fluorescent whitening agent.Can direct contact food, belong to food-grade coated craft paper.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.For each part of the present utility model can mutually combine under the condition of not conflicting; any those skilled in the art; equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (8)
1. a bundling package coated craft paper, it is characterized in that, described bundling package coated craft paper comprises: the coating layer connected successively, surface layer, sandwich layer, bottom and starch glue application layer, wherein, described sandwich layer is mixed slurry layer, described surface layer is bleached wood pulp layer, and described bottom is 70%-100% true qualities wood pulp layers.
2. bundling package coated craft paper as claimed in claim 1, it is characterized in that, the thickness of described sandwich layer is more than or equal to the thickness sum of described surface layer and bottom.
3. bundling package coated craft paper as claimed in claim 1, it is characterized in that, the thickness range of described sandwich layer is: 60-350um.
4. bundling package coated craft paper as claimed in claim 1, it is characterized in that, described coating layer comprises: the finishing coat connected successively, floating coat and primary coat glue application layer, and wherein, primary coat glue application layer covers on described surface layer.
5. bundling package coated craft paper as claimed in claim 1, it is characterized in that, the thickness of described coating layer is less than the thickness of described surface layer and the thickness of described bottom.
6. bundling package coated craft paper as claimed in claim 1, it is characterized in that, the thickness of described starch glue application layer is less than the thickness of described surface layer and the thickness of described bottom.
7. bundling package coated craft paper as claimed in claim 1, it is characterized in that, the thickness range of described surface layer is: 25-80um.
8. bundling package coated craft paper as claimed in claim 1, it is characterized in that, the thickness range of described bottom is: 60-300um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520468036.2U CN204875378U (en) | 2015-07-02 | 2015-07-02 | Coating craft paper is used to packing tied in a bundle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520468036.2U CN204875378U (en) | 2015-07-02 | 2015-07-02 | Coating craft paper is used to packing tied in a bundle |
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| CN204875378U true CN204875378U (en) | 2015-12-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088724A (en) * | 2019-12-30 | 2020-05-01 | 珠海红塔仁恒包装股份有限公司 | Coated kraft liner board for bundling package and processing technology thereof |
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2015
- 2015-07-02 CN CN201520468036.2U patent/CN204875378U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088724A (en) * | 2019-12-30 | 2020-05-01 | 珠海红塔仁恒包装股份有限公司 | Coated kraft liner board for bundling package and processing technology thereof |
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