Wet sensitive colour changing shows word poly-bag and preparation method thereofTechnical field
The present invention relates to packing technique fields, show word poly-bag and preparation method thereof more particularly to a kind of wet sensitive colour changing.
Background technique
Plastic flexible package is a kind of product that use scope is very extensive in packaging field, and this packaging has light, closeThe advantages that envelope property is good, low in cost.For example, when plastic flexible package is applied at ready-made clothes field, in packaging bag generally can there are 2~6 diameters are the aperture of 5~10mm so that packaging process can be gone on smoothly.But it is packed into cotton in such packaging bag, movesAfter the fabric of the natural materials such as object hair quality, silk, when the humidity of the environment of storage is larger, steam can be out of entrance packaging bagPortion causes the mouldy problem of fabric dampness.Existing Humidity Detection card or Humidity Detection instrument, it usually needs comparison just can determine that ringBorder humidity, or there is the problems such as being easily lost when carrying.
Summary of the invention
Based on this, it is necessary to which humidity range can directly be prompted in humidity environment and appear warning indicators letter by providing one kindThe wet sensitive colour changing of breath shows word poly-bag and preparation method thereof.
A kind of aobvious word poly-bag of wet sensitive colour changing, including bag main body and humidity alert zone；
The bag main body is made of plastic film；
The humidity alert zone has alert flag and ink discoloration band, and the alert flag is located in the bag main body,The ink discoloration band is printed in the bag main body by wet sensitive colour changing ink to be formed, and ink discoloration band is covered describedIn alert flag；
When the humidity of the bag main body local environment is less than the ink discoloration band corresponding humidity of discoloration, the inkDiscoloration band the first color of display, the alert flag are hidden in the ink discoloration band；
When the humidity of the bag main body local environment, which is greater than or equal to the ink, to change colour with the humidity to change colour, the oilInk discoloration band display is colourless, and the alert flag reveals.
The wet sensitive colour changing ink is the mixing of reversible wet sensitive colour-changing agent and colorless ink in one of the embodiments,Object；
The reversible wet sensitive colour-changing agent is selected from calcium bicarbonate-thymolphthalein compound, anhydrous cupric sulfate, sodium carbonate -1,3,5- trinitrobenzen compound, sodium sulfite-o-cresolphthalein compound, sodium acetate-phenolphthalein compound or calcium hydroxide-quinoline blue are multipleObject is closed, the mass percent that the reversible wet sensitive colour-changing agent accounts for the wet sensitive colour changing ink is 1.0%-3.0%.
The humidity alert zone has multiple in one of the embodiments, multiple humidity alert zones according to it is described canThe incremental sequence arrangement of the mass percent of inverse wet sensitive colour changing agent.
Multiple humidity alert zones setting arranged in a ring or linear pattern on the whole in one of the embodiments,Setting.
In one of the embodiments, there are three the humidity alert zones, what three humidity alert zones were corresponding in turn toAmbient humidity is 50%, 70% and 90%.
The reversible wet sensitive colour-changing agent of the discoloration of ink described in three humidity alert zones band in one of the embodiments,Mass percent successively 1.1%, 1.85% and 2.8%.
The alert flag is printed with general black ink in one of the embodiments,.
A kind of production method that above-mentioned wet sensitive colour changing shows word poly-bag, includes the following steps:
The bag main body is made in the plastic film after sided corona treatment, prints alert flag in the bag main body, makesWith wet sensitive colour changing ink, printed ink discoloration band, the ink discoloration band are covered in the alert flag in the bag main bodyOn, humidity alert zone, which is formed, to get wet sensitive colour changing shows word poly-bag；Alternatively, sided corona treatment is carried out to the plastic film, it will be describedAlert flag and ink discoloration band are printed on the plastic film after sided corona treatment, form humidity alert zone, rightThe plastic film for being printed on the humidity alert zone cut, hot termination process, and the plastic film forms the bag masterBody, the bag main body and the humidity alert zone collectively form wet sensitive colour changing and show word poly-bag；
When the humidity of the bag main body local environment is less than the ink discoloration band corresponding humidity of discoloration, the inkDiscoloration band the first color of display, the alert flag are hidden in the ink discoloration band；
When the humidity of the bag main body local environment, which is greater than or equal to the ink, to change colour with the humidity to change colour, the oilInk discoloration band display is colourless, and the alert flag reveals.
The process conditions of the sided corona treatment in one of the embodiments, are as follows: current strength 0.5-2A.
It includes bag main body and humidity alert zone that above-mentioned wet sensitive colour changing, which shows word poly-bag, and the bag main body is made of plastic film,The humidity alert zone has alert flag and ink discoloration band, and the ink discoloration band covers in the alert flag；WhenWhen the humidity of the bag main body local environment is less than ink discoloration band discoloration corresponding humidity, the ink discoloration band displayFirst color, the alert flag are hidden in the ink discoloration band；Be greater than when the humidity of the bag main body local environment orWhen equal to ink discoloration with the humidity to change colour, the ink discoloration band display is colourless, and the alert flag reveals.MakeWhen showing the products such as word poly-bag storing fabric with above-mentioned wet sensitive colour changing, under high humidity environment, the ink discoloration band is by the first faceColor becomes colorless, and alarming sign can understand, directly show, without any interference；When change of the humidity ring lower than ink discoloration bandWhen color humidity, alarming sign is hidden, and is not necessarily to compare, and can directly, intuitively, effectively prompt ambient humidity locating for employee's bag main bodyAnd countermeasure.
Detailed description of the invention
Fig. 1 is that the wet sensitive colour changing of an embodiment shows the structural schematic diagram of word poly-bag；
Fig. 2 is the schematic diagram that the wet sensitive colour changing of an embodiment shows the production method of word poly-bag.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawingGive presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper instituteThe embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thoroughComprehensively.
Incorporated by reference to Fig. 1, the wet sensitive colour changing of an embodiment shows word poly-bag 10, including bag main body 100 and humidity alert zone 200.Humidity alert zone 200 has alert flag 210 and ink discoloration band 220.Alert flag 210 is located in bag main body 100.Ink becomesColour band 220 is printed in bag main body 100 by wet sensitive colour changing ink and is formed, and ink discoloration band 220 is covered in alert flag 210On.When the humidity of 100 local environment of bag main body changes colour corresponding humidity less than ink discoloration band 220, ink discoloration band 220 is aobviousShow that the first color, alert flag 210 are hidden in ink discoloration band 220；When the humidity of 100 local environment of bag main body is greater than or waitsWhen the humidity that ink discoloration band 220 changes colour, ink discoloration band 220 shows colourless, and alert flag 210 reveals.
When showing the products such as word poly-bag storing fabric using above-mentioned wet sensitive colour changing, under high humidity environment, ink discoloration band 220It is become colorless by the first color, alarming sign 210 can understand, directly show, without any interference；When humidity ring is lower than inkWhen the discoloration humidity of discoloration band 220, alarming sign 210 is hidden in again in ink discoloration band 220, can directly, directly without comparingIt sees, effectively prompt ambient humidity and countermeasure locating for employee's bag main body 100.
In the present embodiment, bag main body 100 is made of plastic film.One end of bag main body 100 is equipped with sack 110 and adhesive tapeItem, for encapsulating the products such as fabric.The making material of bag main body 100 can be but not limited to following material: polyethylene, poly- thirdAlkene, nylon, polyethylene glycol phthalate and polyurethane.Bag main body 100 can be transparent, or nontransparent plasticsPoly-bag.The shape of bag main body 210 is rectangle.It is appreciated that setting position of the sack 110 in bag main body 100 can carry outIt is adaptively adjusted.
In the present embodiment, alert flag 210 is printed to form black alert flag text with common ink, reduces lifeProduce cost.Wet sensitive colour changing ink is the mixture of reversible wet sensitive colour-changing agent and colorless ink.Reversible wet sensitive colour-changing agent is positioned belowThe first color is shown when in the environment of its humidity that changes colour, and is shown when being placed higher than in the environment of its humidity that changes colour colourless.It is reversible canIt is multiple that inverse wet sensitive colour changing agent can be selected from calcium bicarbonate-thymolphthalein compound, anhydrous cupric sulfate, sodium carbonate -1,3,5- trinitrobenzenClose object, sodium sulfite-o-cresolphthalein compound, sodium acetate-phenolphthalein compound or calcium hydroxide-quinoline blue compound, reversible humidityThe mass percent that quick colour-changing agent accounts for wet sensitive colour changing ink is 1.0%-3.0%.
In the present embodiment, humidity alert zone 200 has multiple, and multiple humidity alert zones 200 are according to reversible wet sensitive colour-changing agentThe incremental sequence arrangement of mass percent.Multiple humidity alert zones 200 setting arranged in a ring or linear pattern on the wholeSetting, as long as conveniently recognized, beauty etc..Humidity alert zone 200 is set on the outer surface of bag main body 100 close to bag main bodyThe position of frontside edge, can also be parallel with edge line adjacent in bag main body 100 with the long side of humidity alert zone 200.It can manageSolution, when bag main body 210 is transparent, humidity alert zone 200 can also be set on the inner surface of bag main body 100, accurately to indicate productLocating humidity environment.
Preferably, multiple humidity alert zones 200 mainly correspond to the situation that ambient humidity is greater than 50%.For example, humidity warnsThere are three areas 200, and the ambient humidity that three humidity alert zones 200 are corresponding in turn to is 50%, 70% and 90%.Three humidity are alertShow the mass percent of the reversible wet sensitive colour-changing agent of the discoloration band 220 of ink in area 200 successively 1.1%, 1.85% and 2.8%.ByThe mass percent gap of reversible wet sensitive colour-changing agent in three ink discoloration bands 220 is larger, ring when it being made to correspond to discolorationBorder humidity value gap is larger.
It is appreciated that the quality percentage of the reversible wet sensitive colour-changing agent of ink discoloration band 220 can according to actual needs, be adjustedThan the difference for making each ink in multiple humidity alert zones 200 change colour between the corresponding ambient humidity of band 220 is reduced, can be withFurther indicative for environments humidity becomes the smaller situation of range, improves accuracy and sensitivity.
Incorporated by reference to Fig. 2, wet sensitive colour changing shows the production method 20 of word poly-bag 10, includes the following steps:
Bag main body 100 is made in plastic film after sided corona treatment；Alert flag 210 is printed in bag main body 100；Using wetQuick color shifting ink printed ink discoloration band 220 in bag main body 100, ink discoloration band 220 cover in alert flag 210, shapeWord poly-bag 10 is shown at humidity alert zone 200 to get wet sensitive colour changing.
Alternatively, carrying out sided corona treatment to plastic film, alert flag 210 and ink discoloration band 220 are printed on through coronaOn treated plastic film, humidity alert zone 200 is formed, the plastic film for being printed on humidity alert zone 200 is cut, heatTermination process, plastic film form bag main body 100, and bag main body 100 and humidity alert zone 200 collectively form wet sensitive colour changing and show word glueBag 10.
Flexographic printing, intaglio printing, silk-screen printing, ink jet printing and laser printing etc. can be used in ink discoloration band 220Mode of printing is realized.
Preferably, the process conditions of sided corona treatment are as follows: current strength 1A.By the plastic film of sided corona treatment, improveThe adhesive force of wet sensitive colour changing ink on the surface of the material improves color fastness.It is wet that black alert flag text can be varying environmentCorresponding environmental Kuznets Curves, product protection and the signal language of inspection or caveat under degree.Signal language can be with are as follows: pays attention to control environmental wetDegree (50%) increases or replaces desiccant (70%), pays attention to checking the quality of the products (90%).Alert flag 210 and color shifting inkIt can be pre-printed on the plastic film by sided corona treatment with 220, form humidity alert zone 200, then cut, seal end systemWord poly-bag 10 is shown at wet sensitive colour changing, using assembly line, mass production, is remarkably improved production efficiency, and reduce production cost.
The present invention is described further combined with specific embodiments below.
Embodiment 1
Present embodiments provide a kind of aobvious word poly-bag of wet sensitive white bleach.
A kind of aobvious word poly-bag of wet sensitive white bleach, is printed with alert flag and ink discoloration band on poly-bag.Ink becomesColour band covers in alert flag.Ink discoloration band and alert flag have 3 groups, and 3 groups are of a straight line type arrangement on the whole, and from one endContent to the wet sensitive colour changing ink in other end ink discoloration band gradually increases, and respectively corresponds the environmental wet of alert flag promptDegree.
Making step is as follows:
Take suitable polyacrylic film weblike material, unreeling makes film by corona treatment, to film surface intoRow sided corona treatment, the technological parameter of sided corona treatment are as follows: current strength is set as 1A, and film surface tension is made to reach 32 × 10-3~48×10-3N/m。
Modulate wet sensitive colour changing ink: by reversible wet sensitive colour-changing agent (calcium bicarbonate-thymolphthalein compound, it is dry after faceColor is blue, and the color after corresponding humidity environment discoloration is colourless) being dispersed in colorless ink, (the macro auspicious chemical industry of Dongguan City is limitedCompany HB-TY0) it is inner formed mass percent be respectively 1.10%, 1.85% and 2.80% wet sensitive colour changing ink.
General black ink is placed in No. 1 ink tank of four printing machines.Mass percent is respectively 1.10%, 1.85%And 2.80% wet sensitive colour changing ink according to content be incremented by sequence, be placed in No. 2~No. 4 ink tanks of four-color press.
Printing machine is started, film successively passes through the corresponding print roller of 1~No. 4 ink tank, and design is made to have the position of alert flagSet the upper corresponding signal language/caveat of printing and ink discoloration band.
Cut the film for being printed with humidity alert zone equal length by cutting bag making machine, seal end to get.
To further illustrate excellent effect of the invention, illustrate below by comparative tests.
Comparative example 1
The aobvious word poly-bag of the wet sensitive white bleach of this comparative example is substantially the same manner as Example 1, the difference is that:
Suitable plastic film web-like material from without sided corona treatment is taken, is placed directly on printing machine and is printed,Without making film carry out sided corona treatment before printing.
Comparative example 2
The aobvious word poly-bag of the wet sensitive white bleach of this comparative example is substantially the same manner as Example 1, the difference is that:
Common non-humidity sensitive white colorant is added in colorless ink, rather than reversible wet sensitive colour-changing agent is added.
Wet sensitive white bleach obtained by 1 embodiment of table and comparative example shows the quality versus of word poly-bag
Note: in plastic cement printing industry, color fastness grading range is 0~5, is minimum rank metric with 0.5, and 4~5 grades are conjunctionLattice, 0~3.5 grade is unqualified.
As it can be seen from table 1 being produced using different production technologies, wet sensitive white bleach shows the quality of word poly-bagMeeting difference, makes a concrete analysis of as follows:
The polypropylene film of comparative example 1 is without sided corona treatment, and the surface tension very little of material, wet sensitive colour changing ink is in materialThe adhesive force very little on surface, the color fastness after printing only have 2, are easy to fall off, and normal requirement is not achieved.
Use ordinary white mill base in the ink modulated process of comparative example 2, rather than reversible wet sensitive colour-changing agent, work as airIn humidity reach reversible wet sensitive colour-changing agent and occur when the humidity of color change that ordinary white mill base is non-discolouring, cover, reach alwaysLess than normal requirement.
Therefore, qualification can be just made by sided corona treatment, and by the reversible wet sensitive agent of addition certain content in embodiment 1Product.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned realityIt applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics existsContradiction all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneouslyIt can therefore be construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,Under the premise of being detached from present inventive concept, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.