CN104389241A - Oil-proof paper sizing system and sizing method - Google Patents
Oil-proof paper sizing system and sizing method Download PDFInfo
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- CN104389241A CN104389241A CN201410657220.1A CN201410657220A CN104389241A CN 104389241 A CN104389241 A CN 104389241A CN 201410657220 A CN201410657220 A CN 201410657220A CN 104389241 A CN104389241 A CN 104389241A
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Abstract
The invention discloses an oil-proof paper sizing system. The oil-proof paper sizing system comprises a starch size liquid stewing device, an oil-proof agent adding device, a membrane transfer sizing device and a starch size liquid recovery device which are orderly connected with one another. The invention discloses an oil-proof paper sizing method which comprises the following steps: (1) stewing a surface sizing starch liquid; (2) adding an oil-proof agent; (3) sizing paper; and (4) recovering the starch size liquid. The oil-proof paper sizing system has the beneficial effects that a large batch of high-quality oil-proof paper can be produced continuously and stably by use of the membrane transfer sizing device, a fluorine polymer oil-proof agent and a hot air drying oven, the usage amount of the oil-proof agent is reduced, potential safety hazards possibly caused by the use of a large quantity of oil-proof agent in oil-proof paper production are prevented, and the problems of unstable oil-proof grade, large usage amount of the oil-proof agent, uneven coating, inconsistent oil-proof grade of an entire paper banner, and the like in the oil-proof paper production are solved.
Description
Technical field
The present invention relates to greaseproof paper production technical field, be specifically related to a kind of greaseproof paper glue system and glue applying method.
Background technology
Because fund, manpower and experiment condition limited, domestic do not have large-scale manufacturer to produce in batches the greaseproof paper with oil preventing performance, and the mode of import still taked by most domestic order.The defect that current greaseproof paper is produced mainly is glue-applying technique imperfection: 1) traditional little paper machine is produced because equipment falls behind, the speed of a motor vehicle lower (at below 100m/min), and technique is immature, often occurs the situation of grease proofing grade instability.2) oil-proofing agent use amount is large, and much all joins in stock mixing system, and oil-proofing agent utilization rate is lower, and oil-proofing agent is dissolved into after in plain boiled water, serious to environment in the process that plain boiled water runs off.3) even if adopt the grease proofing technique of paper for surface sizing, be immersion type sizing applicator system, its shortcoming is that circulation glue does not have glue pressure screening system, the long-time circulation of starch glue easily makes glue dirty, reduces the result of use of oil-proofing agent, causes oil-proofing agent consumption large, and easily cause page groove mark and surface coating uneven, the thickness of paper and quantitatively go out to produce unstable phenomenon at sizing applicator, causes page grease resistance uneven, can not the grease proofing grade of On-line Control etc.4) the drying cylinder convection drying of conventional paper machines after sizing applicator, because the temperature of dryer surface is inconsistent, will make starch glue and the infiltrative difference of oil-proofing agent like this, cause the problem that the grease proofing grade of paper web is inconsistent.
Therefore, need a kind of greaseproof paper glue system and glue applying method in the market badly, solve above-mentioned defect.
Summary of the invention
For solving greaseproof paper glue-applying technique imperfection in prior art, grease proofing effect is undesirable, still there is no the technological deficiency of a set of rational glue system, the present invention designs a kind of greaseproof paper glue system and glue applying method, solve the technical barrier of applying glue in greaseproof paper production process, avoid a large amount of potential safety hazard using oil-proofing agent may bring in greaseproof paper is produced simultaneously.
For achieving the above object, the technical solution used in the present invention is:
A kind of greaseproof paper glue system, comprise the starch glue connected in turn and boil device, oil-proofing agent adding apparatus, film transfer size applicator and starch glue retracting device, starch glue boils device and comprises starch glue decocting tank and starch glue holding vessel, and starch glue decocting tank is connected by glue solution pump with starch glue holding vessel; Oil-proofing agent adding set comprises starch glue material feeding jar, and starch glue material feeding jar is connected with measuring pump; Starch glue retracting device comprises starch glue recycling can and pressurized screen, and starch glue recycling can is connected by reclaiming glue pump with pressurized screen; Wherein, starch glue recycling can is connected with film transfer size applicator, and pressurized screen is connected with starch glue material feeding jar; Starch glue decocting tank, starch glue holding vessel and starch glue recycling can are all provided with agitator.
Preferably, film transfer size applicator is film transfer sizing applicator.The auxiliary equipment of film transfer sizing applicator is made up of the rill gauge stick with rill, excellent seat, seal blades, application roll pressurised airbag, rill gauge stick pressurised airbag, nozzle, sparge pipe and corresponding adjusting device and transmission device, can be adjusted the coating weight of starch glue and oil-proofing agent by the pressure, gelatin concentration etc. of the rill width of adjustment rill gauge stick, applying glue roll gap pressure, rill gauge stick and application roll.After rill gauge stick metering by film transfer sizing applicator, application roll forms the starch glue film transfer of thin layer on page, carry out coating batch production, by the furrow width of the pressure of adjustment rill gauge stick, surface glue concentration and rill gauge stick, page kiss-coating amount is adjusted, oil-proofing agent use amount can be reduced like this, the speed of a motor vehicle is improved further, is coated with even, accurate measurement.Because conventional size machine application techniques glue has very thick bondline thickness, and because paper machine speed is too fast, increase the linear velocity of application roll outer wall, the splash of glue at application roll edge and whirl coating phenomenon can be produced like this, and use film transfer sizing applicator to be make glue be formed after gauge stick in film transfer to coating application roll and glue is transferred to above page completely, this avoid the problems of picture conventional size machine.And when adopting film transfer sizing applicator also to there will not be traditional immersion type applying glue because of gelatin viscosity, concentration is high and the roller edge whirl coating phenomenon that produces, therefore can improve coating gelatin concentration, thus save the consumption of steam in glue preparation process.
Preferably, oil-proofing agent adding apparatus shifts size applicator by screw pump and film and is connected.Starch glue, after boiling, delivers to the rill gauge stick metering of film transfer sizing applicator in the mixing of starch glue material feeding jar through screw pump together with oil-proofing agent.
Further, this greaseproof paper glue system also comprises the drying cylinder being connected to film transfer size applicator front end, and drying cylinder is at least one group.Dry process before being carried out page by drying cylinder, is controlled to be about 95% by web dryness, can improve the absorbent properties of page to starch glue.
Further, this greaseproof paper glue system also comprises the hot air drier being connected to film transfer size applicator rear end.Hot air drier is used for predrying to the hot blast of page, more be conducive to the infiltration in page of oil-proofing agent and starch glue and and fiber between combination, reach the object reducing glue and oil-proofing agent consumption further, also improve the mass dryness fraction of page when touching drying cylinder, decrease because the generation of the low sticky cylinder broken end caused of web dryness, improve paper machine operation performance.And employing hot air drier, avoid glue that traditional contact drying causes because surface temperature of drier is inconsistent and the inconsistent problem of the permeability of oil-proofing agent in paper, make the view picture oil preventing performance uniformity of greaseproof paper, the oil preventing performance of its greaseproof paper produced and other indexs all reach the requirement of food-grade, improve added value of product.
A kind of greaseproof paper glue applying method, comprises the following steps:
(1), the boiling of surface sizing starch glue: air-dry oxidized starch and water are mixed according to 9% concentration, adopt the mode of steam direct heating to carry out heating to boil, stop heating when temperature reaches more than 95 DEG C, be incubated more than 20 minutes aging starch glues;
(2), the adding of oil-proofing agent: when the temperature of starch glue drops to after below 65 DEG C, add oil-proofing agent and stir;
(3), the applying glue of page: the mixed liquor of oil-proofing agent and starch glue is made into homogeneous starch glue film, under setting pressure, starch glue film is applied to page surface uniformly;
(4), the recovery of starch glue: pressure screening is carried out to remaining recovery glue in making starch glue thin-film process and removes impurity.
Further, step (3) is further comprising the steps:
(a), page is carried out before dry process, web dryness is controlled to be about 95%;
B (), making starch glue film, be applied to the page surface through front drying process uniformly by starch glue film;
(c), the page being coated with oil-proofing agent and starch glue to be carried out to hot blast predrying, increases the absorbability of web dryness and oil-proofing agent.
Beneficial effect of the present invention is: this greaseproof paper glue system adopts new membrane transfer sizing applicator equipment and fluoropolymer oil-proofing agent and hot air drier, high-quality greaseproof paper can be produced in enormous quantities by continous-stable, decrease oil-proofing agent use amount, stop the potential safety hazard that a large amount of use oil-proofing agent may bring in greaseproof paper is produced, solve grease proofing grade in greaseproof paper production unstable, oil-proofing agent use amount is large, the problems such as crawling is even, and the grease proofing grade of view picture page banner is inconsistent.And have employed hot air drier after adding oil-proofing agent applying glue, to carry out hot blast predrying, the transverse direction that improve the mass dryness fraction and paper web that page enters drying section absorbs uniformity, improves paper machine operation performance.This greaseproof paper glue applying method comprises process dry before page, the applying glue of page, starch glue boils, reclaim the pressure screening of glue glue, the flow processs such as hot blast is predrying, improve oil-proofing agent utilization rate, and coating evenly, accurate measurement, decrease splash and whirl coating phenomenon, the predrying flow process of hot blast be conducive to the infiltration in page of oil-proofing agent and starch glue and and fiber between combination, reach the object reducing glue and oil-proofing agent consumption further, also improve the mass dryness fraction of page when touching drying cylinder, decrease because the generation of the low sticky cylinder broken end caused of web dryness.
Accompanying drawing explanation
Fig. 1 is the structure diagram of greaseproof paper glue system of the present invention;
Fig. 2 is the partial enlarged drawing at Figure 1A place;
Fig. 3 is the flow chart of greaseproof paper glue applying method of the present invention.
In figure,
1, starch glue boils device; 11, starch glue decocting tank; 12, glue solution pump; 13, starch glue holding vessel; 14, agitator; 2, oil-proofing agent adding apparatus; 21, starch glue material feeding jar; 22, screw pump; 23, measuring pump; 3, film transfer size applicator; 31, feed pipe; 32, nozzle; 33, application roll pressurised airbag; 34, rill gauge stick pressurised airbag; 35, seal blades; 36, application roll; 37, rill gauge stick; 38, excellent seat; 39, adjusting device; 4, starch glue retracting device; 41, pressurized screen; 42, glue pump is reclaimed; 43, starch glue recycling can.
Detailed description of the invention
Below in conjunction with accompanying drawing, explanation is explained in detail to structure of the present invention.
As shown in Figure 1-2, a kind of greaseproof paper glue system provided by the invention, comprise the starch glue connected in turn and boil device 1, oil-proofing agent adding apparatus 2, film transfer size applicator 3 and starch glue retracting device 4, starch glue boils device and comprises starch glue decocting tank 11 and starch glue holding vessel 13, and starch glue decocting tank is connected by glue solution pump 12 with starch glue holding vessel; Oil-proofing agent adding set comprises starch glue material feeding jar 21, and starch glue material feeding jar is connected with measuring pump 23; Starch glue retracting device comprises starch glue recycling can 43 and pressurized screen 41, and starch glue recycling can is connected by reclaiming glue pump 42 with pressurized screen; Wherein, starch glue recycling can is connected with film transfer size applicator, and pressurized screen is connected with starch glue material feeding jar; Starch glue decocting tank, starch glue holding vessel and starch glue recycling can are all provided with agitator 14.Oil-proofing agent adding apparatus shifts size applicator by screw pump 22 and film and is connected.Film transfer size applicator is film transfer sizing applicator.This greaseproof paper glue system also comprises the drying cylinder 5 being connected to film transfer size applicator front end, and drying cylinder is at least one group.This greaseproof paper glue system also comprises the hot air drier 6 being connected to film transfer size applicator rear end.
A kind of greaseproof paper glue system provided by the invention, after film transfer sizing applicator, being provided with hot air drier, to carry out hot blast to page predrying.Relative to prior art, the present invention utilizes film to shift sizing applicator and hot air drier, the auxiliary equipment of film transfer sizing applicator is made up of the rill gauge stick 37 with rill, excellent seat 38, seal blades 35, application roll pressurised airbag 33, rill gauge stick pressurised airbag 34, nozzle 32, sparge pipe and corresponding adjusting device 39 and transmission device, can be adjusted the coating weight of starch glue and oil-proofing agent by the pressure, gelatin concentration etc. of the rill width of adjustment rill gauge stick, applying glue roll gap pressure, rill gauge stick and application roll.
Starch glue is after boiling, the rill gauge stick metering of film transfer sizing applicator is delivered in the mixing of starch glue material feeding jar through screw pump together with oil-proofing agent, then the starch glue film transfer of thin layer is formed on page by application roll 36, carry out coating batch production, can be adjusted page kiss-coating amount by the furrow width of the pressure of adjustment rill gauge stick, surface glue concentration and rill gauge stick, oil-proofing agent use amount can be reduced like this, the speed of a motor vehicle is improved further, is coated with even, accurate measurement.Because conventional size technology starch glue has very thick bondline thickness, and because paper machine speed is too fast, increase the linear velocity of application roll outer wall, the splash of glue at application roll edge and whirl coating phenomenon can be produced like this, if want that improving paper machine speed just must increase the diameter of application roll to reduce edge line speed, reduce expulsion events, and use film shift sizing applicator be make glue formed after rill gauge stick film transfer on coating application roll and starch glue is transferred to above page completely, this avoid the problems of picture conventional size technique.And adopt that this film to shift when glue system also there will not be traditional immersion type applying glue because of gelatin viscosity, concentration is high and the application roll edge whirl coating phenomenon that produces, therefore can improve coating starch gelatin concentration, thus save the consumption of steam in starch glue preparation process.This greaseproof paper glue system does not adopt traditional drying cylinder direct contact type dry after page coats oil-proofing agent, but have employed the predrying technology of hot blast, so more be conducive to the infiltration in page of oil-proofing agent and starch glue and and fiber between combination, reach the object reducing starch glue and oil-proofing agent consumption further, also improve the mass dryness fraction of page when touching drying cylinder, decrease because the generation of the low sticky cylinder broken end caused of web dryness, improve paper machine operation performance.And adopt hot blast predrying, avoid glue that traditional contact drying causes because surface temperature of drier is inconsistent and the inconsistent problem of the permeability of oil-proofing agent in paper, make the view picture oil preventing performance uniformity of greaseproof paper, the oil preventing performance of its greaseproof paper produced and other indexs all reach the requirement of food-grade, improve home products added value, provide effective guarantee for alleviating and filling up domestic greaseproof paper market.
A kind of greaseproof paper glue applying method provided by the invention, comprises the following steps:
(1), the boiling of surface sizing starch glue: air-dry oxidized starch and water are mixed according to 9% concentration, adopt the mode of steam direct heating to carry out heating to boil, stop heating when temperature reaches more than 95 DEG C, be incubated more than 20 minutes aging starch glues;
(2), the adding of oil-proofing agent: when the temperature of starch glue drops to after below 65 DEG C, add oil-proofing agent and stir;
(3), the applying glue of page: the mixed liquor of oil-proofing agent and starch glue is made into homogeneous starch glue film, under setting pressure, starch glue film is applied to page surface uniformly;
(4), the recovery of starch glue: pressure screening is carried out to remaining recovery glue in making starch glue thin-film process and removes impurity.
A kind of greaseproof paper glue applying method provided by the invention, step (3) is further comprising the steps:
(a), page is carried out before dry process, web dryness is controlled to be about 95%;
B (), making starch glue film, be applied to the page surface through front drying process uniformly by starch glue film;
(c), the page being coated with oil-proofing agent and starch glue to be carried out to hot blast predrying, increases the absorbability of web dryness and oil-proofing agent.
As shown in Figure 3, first embodiment of a kind of greaseproof paper glue applying method provided by the invention, can be realized by greaseproof paper glue system provided by the invention, specific implementation method is as follows: boiling of (1), surface sizing starch glue: by air-dry oxidized starch and water according to 9% concentration, join starch glue decocting tank, adopt the mode of steam direct heating to carry out heating to boil, when temperature reaches more than 95 DEG C, stop heating, be incubated more than 20 minutes aging starches.Then the starch glue of slaking is pumped to starch glue holding vessel by glue solution pump, naturally cool under the effect of agitator less than 65 DEG C for subsequent use.(2), the adding of oil-proofing agent: observe from computer automatic control system, when the temperature of starch glue holding vessel drops to after below 65 DEG C, starch glue is pumped to starch glue material feeding jar, use measuring pump evenly to add oil-proofing agent (for mixing, oil-proofing agent joins on the feed pipe above starch glue material feeding jar) simultaneously.(3), the applying glue of page: the mixed liquor of oil-proofing agent and starch glue is delivered to film from the screw pump of starch glue material feeding jar and shifts in the feed pipe 31 of sizing applicator, it is made laterally to be evenly distributed on application roll through nozzle, when application roll rotates, the pressure of the rill of rill gauge stick and rill gauge stick and application roll is utilized starch glue to be formed homogeneous starch glue film, when page reaches between two application rolls, under a certain pressure starch glue film is applied to page surface uniformly.Can according to the paper kind of producing different grease proofing grades in production, utilize application roll pressurised airbag to regulate the pressure of application roll, utilize rill gauge stick pressurised airbag, excellent seat and adjusting device to regulate the pressure of rill gauge stick and application roll, the starch glue of page and the coating weight of oil-proofing agent can be adjusted at any time by these adjustments.(4), the recovery of starch glue: in cyclic process, starch glue can gradually dirty, containing impurity, so carry out pressure screening, ensures the consistent of applying glue and grease proofing grade.Recovery of starch glue to starch glue recycling can by feed back pipeline self, is pumped to pressurized screen (sieve seam is 0.1mm) by recovery glue, impurity is removed glue screening, make glue cleaner, improve food greaseproof paper cleanliness factor.
First embodiment of a kind of greaseproof paper glue applying method provided by the invention, step (3) is further comprising the steps: (a), for ensureing that page is to the absorbent properties of starch glue, before having to pass through before entering film transfer sizing applicator, dry process is about 95% to web dryness; B (), making starch glue film, be applied to the page surface through front drying process uniformly by starch glue film; (c), the page being coated with greaseproof paper to be carried out to hot blast predrying, increases the mass dryness fraction that page enters drying cylinder.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all do in flesh and blood of the present invention any amendment, equivalent to replace and simple modifications etc., all should be included within protection scope of the present invention.
Claims (7)
1. a greaseproof paper glue system, comprise the starch glue connected in turn and boil device (1), oil-proofing agent adding apparatus (2), film transfer size applicator (3) and starch glue retracting device (4), it is characterized in that, starch glue boils device and comprises starch glue decocting tank (11) and starch glue holding vessel (13), and starch glue decocting tank is connected by glue solution pump (12) with starch glue holding vessel; Oil-proofing agent adding set comprises starch glue material feeding jar (21), starch glue material feeding jar is connected with measuring pump (23); Starch glue retracting device comprises starch glue recycling can (43) and pressurized screen (41), and starch glue recycling can is connected by reclaiming glue pump (42) with pressurized screen; Wherein,
Starch glue recycling can is connected with film transfer size applicator, and pressurized screen is connected with starch glue material feeding jar; Starch glue decocting tank, starch glue holding vessel and starch glue recycling can are all provided with agitator (14).
2. greaseproof paper glue system according to claim 1, is characterized in that, film transfer size applicator is film transfer sizing applicator.
3. greaseproof paper glue system according to claim 2, is characterized in that, oil-proofing agent adding apparatus shifts sizing applicator by screw pump (22) and film and is connected.
4. greaseproof paper glue system according to claim 1, is characterized in that, this greaseproof paper glue system also comprises the drying cylinder (5) being connected to film transfer size applicator front end, and drying cylinder is at least one group.
5. greaseproof paper glue system according to claim 1, is characterized in that, this greaseproof paper glue system also comprises the hot air drier (6) being connected to film transfer size applicator rear end.
6. a greaseproof paper glue applying method, is characterized in that, comprises the following steps:
(1), the boiling of surface sizing starch glue: air-dry oxidized starch and water are mixed according to 9% concentration, adopt the mode of steam direct heating to carry out heating to boil, stop heating when temperature reaches more than 95 DEG C, be incubated more than 20 minutes aging starch glues;
(2), the adding of oil-proofing agent: when the temperature of starch glue drops to after below 65 DEG C, add oil-proofing agent and stir;
(3), the applying glue of page: the mixed liquor of oil-proofing agent and starch glue is made into homogeneous starch glue film, under setting pressure, starch glue film is applied to page surface uniformly;
(4), the recovery of starch glue: pressure screening is carried out to remaining recovery glue in making starch glue thin-film process and removes impurity.
7. greaseproof paper glue applying method according to claim 6, is characterized in that, step (3) is further comprising the steps:
(a), page is carried out before dry process, web dryness is controlled to be about 95%;
B (), making starch glue film, be applied to the page surface through front drying process uniformly by starch glue film;
(c), the page being coated with oil-proofing agent and starch glue to be carried out to hot blast predrying, increases the absorbability of web dryness and oil-proofing agent.
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| CN108035181A (en) * | 2017-12-11 | 2018-05-15 | 湖北黄鹤楼特色包装材料有限公司 | The production method of anti-essential oil infiltration cigarette tipping paper |
| CN111379195A (en) * | 2020-04-03 | 2020-07-07 | 山东仁丰特种材料股份有限公司 | Film transfer sizing method for oilproof paper |
| CN114192341A (en) * | 2021-12-10 | 2022-03-18 | 苏州市奥贝新材料科技有限公司 | Five-roller coating device for preparing release film |
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| Publication number | Publication date |
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| CN104389241B (en) | 2017-02-22 |
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