CN109852135A - According to PH change and change colour laminated film and include the paper diaper of the laminated film - Google Patents

According to PH change and change colour laminated film and include the paper diaper of the laminated film Download PDF

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Publication number
CN109852135A
CN109852135A CN201811451254.XA CN201811451254A CN109852135A CN 109852135 A CN109852135 A CN 109852135A CN 201811451254 A CN201811451254 A CN 201811451254A CN 109852135 A CN109852135 A CN 109852135A
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China
Prior art keywords
weight
acid
rosin
laminated film
ink composition
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Granted
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CN201811451254.XA
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Chinese (zh)
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CN109852135B (en
Inventor
金永昌
吴勇锡
金镇万
韩宗润
金宰焕
金东奎
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/50—Sympathetic, colour changing or similar inks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
    • A61F2013/422—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm the alarm being a colour change
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
    • A61F2013/427—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm pH indicator
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • A61F2013/51409—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
    • A61F2013/51411—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film being impervious to fluids but not for air or vapours

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Dermatology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

The present invention relates to the laminated film to change colour according to pH variation and include the paper diaper of the laminated film, laminated film provided by the invention because include liquid impermeability breathable film layer and in the liquid impermeability breathable film layer side using including water-soluble resin, rosin compound, pH indicator, organic acid, the photochromic layer that the aqueous ink composition of solvent, silane compound and adhesive is formed can change according to pH and change colour immediately.Also, the present invention also provides a kind of paper diaper of laminated film to change colour comprising described changed according to pH, whether caregiver can with the naked eye judge immediately that the stool and urine of user is drained from outside, to improve the convenience and usability of caregiver and user.

Description

According to PH change and change colour laminated film and include the paper diaper of the laminated film
Technical field
The present invention relates to changed according to pH and the laminated film to change colour and the THIN COMPOSITE to change colour comprising being changed according to pH The paper diaper of film.
Background technique
Liquid impermeability breathable films refer to can permeate but the impermeable characteristic of liquid with gas and vapor Film.The stomata with micro-unit size is evenly distributed inside breathable films, can liquid permeate is determined by this stomata. In general, liquid impermeability breathable films are used for paper diaper, sanitary napkin, the health such as disposable cold-proof and waterproof article is used Product, agriculture articles, construction articles etc., wherein be mainly used for disposable paper urine pants, for handling not the baby children that can control stool and urine The stool and urine of youngster or handicapped patient.
This disposable paper urine pants include outer cover, the inner cover on the upside of absorption pad and the absorption pad on the upside of outer cover, described Liquid impermeability breathable films are used as outer cover.
In addition, infant and handicapped patient for not can control stool and urine, need its caregiver constantly to sentence Whether disconnected stool and urine excretion.It was all that caregiver directly hears the taste of paper diaper or touches paper diaper, or opens paper urine in the past Whether trousers with the naked eye judge stool and urine excretion.But it by the taste for hearing paper diaper or touches paper diaper and can not accurately sentence It is disconnected, and open paper diaper and with the naked eye judge that infant or patient is not only enabled not to feel good, also to its caregiver cause it is uncomfortable and It is unhygienic, if not draining stool and urine, need to put on paper diaper again, therefore people can be allowed to feel trouble.
That is, problem of the prior art is, have difficulties in terms of the stool and urine excretion for confirming infant or patient immediately, And moisture in paper diaper and stool and urine will lead to bacterial multiplication, to cause scytitis or paper diaper fash, can also produce Raw stench.
In order to solve this problem, a kind of caregiver is being carried out without carrying out above-mentioned work and only can with the naked eye sentence The exploitation of paper diaper whether disconnected stool and urine excretion.For example, South Korea discloses utility model 20-2012-0001668 public affairs The paper diaper opened are will to be stained between the cotton and outer layer of the paper insertion paper diaper of the BTB solution to be changed colour according to pH and utilizationization Whether learning the excretion of reaction and judgement stool and urine.Also, South Korea discloses utility model the 20-2000-0006006th and discloses a kind of incite somebody to action Litmus paper is put into the disposable paper urine pants of the side of absorbed layer.
But the speed that existing paper diaper as described above change and change colour according to pH is slow, and in order in paper Litmus paper is fixed on the inner cover or outer cover of urine pants or is stained with the paper of indicator, is needed using adhesive.And, it may appear that stone Stamen test paper or the paper for being stained with indicator are detached from from the inner cover or outer cover of paper diaper and are difficult to be judged by pH variation.
Therefore, the present inventor invented it is a kind of comprising according to pH change and change colour photochromic layer liquid it is impermeable Property breathable films, and it is used as the outer cover of paper diaper, so as to complete the paper diaper that can with the naked eye judge stool and urine situation.
Existing technical literature
Patent document
(patent document 1) South Korea discloses utility model the 20-2012-0001668th
(patent document 2) South Korea discloses utility model the 20-2000-0006006th
Summary of the invention
(technical problems to be solved)
The first purpose of this invention is, provides a kind of change according to pH and changes colour and the pH variation that can detect by an unaided eye The laminated film of situation.
Second object of the present invention is, provides a kind of paper diaper, and it includes the THIN COMPOSITEs for being changed according to pH and being changed colour Film, whether the stool and urine that can detect by an unaided eye from outside is drained.
The purpose of the present invention is not limited to technical problem as described above, can obtain other technologies by the following description Problem.
(means solved the problems, such as)
In order to reach first purpose, the present invention provides a kind of laminated film for changing according to pH and changing colour, wraps Include liquid impermeability breathable film layer；And the liquid impermeability breathable film layer side utilize according to pH variation and The photochromic layer that the aqueous ink composition of discoloration is formed, wherein the aqueous ink composition includes water-soluble resin, rosin Close object, pH indicator, organic acid, solvent, silane compound and adhesive.
By the aqueous ink composition total weight, the aqueous ink composition includes: water-soluble resin 20~45 Weight %, 0.5~3 weight %, pH indicator of rosin compound 2~10 weight %, 0.1~2 weight % of organic acid, solvent 50~ 1~5 weight % of 70 weight %, 1~5 weight % of silane compound and adhesive.
The rosin compound be rosin (rosin) with selected from ethylene oxide (ethylene oxide), propylene oxide The condensation product of at least one of (propylene oxide) and their mixture progress condensation reaction.
The rosin includes to be selected from rosin acid (abietic acid), neoabietic acid (neoabietic acid), longleaf pine Sour (palustric acid), in dihydro rosin acid (dihydro abietic acid) and pimaric acid (pimaric acid) It is at least one.
The rosin compound has the acidic group (acid radical) and ethylene oxide (oxy- of the rosin ) and the structure that combines of oxypropylene (oxy propylene) ethylene.
The water-soluble resin includes Styrene-acrylic copolymer resin and water solubility with the weight ratio of 1:0.1~0.7 Polyurethane resin.
The pH indicator includes to be selected from cresol red (Cresol red), m-cresol purple (m-Cresol purple), in hundred Phenol indigo plant (Thymol blue), 2,6- dinitrophenol (2,6-Dinitrophenol), 2,4-DNP (2,4- Dinitrophenol), 4- dimethylaminoazobenzene (4-Dimethylaminoazobenzene), bromophenol blue (Bromophenol blue), Congo red (Congo red), methyl orange (Methyl orange), ethyoxyl Huang rebukes essence (Ethoxychrysoidine), bromocresol green (Bromocresol green), 2,5- dinitrophenol (2,5- Dinitrophenol), methylene red (Methylene red), phenol red (Phenol red), bromocresol purple (Bromocresol Purple), 4- nitrophenol (4-Nitrophenol), xylene bromide indigo plant (Bromoxylene blue), bromthymol blue At least one in (Bromothymol blue), 3- nitrophenol (3-Nitrophenol) and phenolphthalein (Phenolphthalein) Kind.
The aqueous ink composition also may include adsorbent.
In order to reach second purpose, the present invention provides a kind of laminated film to change colour comprising changing according to pH Paper diaper, comprising: laminated film, including liquid impermeability breathable film layer and in the liquid impermeability breathable film layer The photochromic layer that side utilizes the aqueous ink composition to be changed colour according to pH variation to be formed；Absorption pad is formed in the THIN COMPOSITE The upside of film；And thin slice, it is formed in the upside of the absorption pad, wherein the aqueous ink composition includes water-soluble tree Rouge, rosin compound, pH indicator, organic acid, solvent, silane compound and adhesive.
By the aqueous ink composition total weight, the aqueous ink composition includes: water-soluble resin 20~45 Weight %, 0.5~3 weight %, pH indicator of rosin compound 2~10 weight %, 0.1~2 weight % of organic acid, solvent 50~ 1~5 weight % of 70 weight %, 1~5 weight % of silane compound and adhesive.
The rosin compound be rosin (rosin) with selected from ethylene oxide (ethylene oxide), propylene oxide The condensation product of at least one of (propylene oxide) and their mixture progress condensation reaction.
The rosin includes to be selected from rosin acid (abietic acid), neoabietic acid (neoabietic acid), longleaf pine Sour (palustric acid), in dihydro rosin acid (dihydro abietic acid) and pimaric acid (pimaric acid) It is at least one.
The rosin compound has the acidic group (acid radical) and ethylene oxide (oxy- of the rosin ) and the structure that combines of oxypropylene (oxy propylene) ethylene.
The water-soluble resin includes Styrene-acrylic copolymer resin and water solubility with the weight ratio of 1:0.1~0.7 Polyurethane resin.
The pH indicator includes to be selected from cresol red (Cresol red), m-cresol purple (m-Cresol purple), in hundred Phenol indigo plant (Thymol blue), 2,6- dinitrophenol (2,6-Dinitrophenol), 2,4-DNP (2,4- Dinitrophenol), 4- dimethylaminoazobenzene (4-Dimethylaminoazobenzene), bromophenol blue (Bromophenol blue), Congo red (Congo red), methyl orange (Methyl orange), ethyoxyl Huang rebukes essence (Ethoxychrysoidine), bromocresol green (Bromocresol green), 2,5- dinitrophenol (2,5- Dinitrophenol), methylene red (Methylene red), phenol red (Phenol red), bromocresol purple (Bromocresol Purple), 4- nitrophenol (4-Nitrophenol), xylene bromide indigo plant (Bromoxylene blue), bromthymol blue At least one in (Bromothymol blue), 3- nitrophenol (3-Nitrophenol) and phenolphthalein (Phenolphthalein) Kind.
The thin slice is by being selected from cotton, non-woven fabrics, staple fibre, any one material shape in silk and tencel (Tencel) At.
(The effect of invention)
It is according to the present invention to be changed and the laminated film of discoloration according to pH, because it includes liquid impermeability breathable film layer And utilize in the liquid impermeability breathable film layer side comprising water-soluble resin, rosin compound, pH indicator has Machine acid, solvent, the photochromic layer that the aqueous ink composition of silane compound and adhesive is formed, can be changed according to pH and immediately Discoloration.There is no need to other work, only by judging that pH changes whether the discoloration of laminated film.
The paper diaper of the laminated film according to the present invention to change colour comprising being changed according to pH, caregiver can be from outsides immediately Whether judging the stool and urine excretion of user.Hereby it is possible to the convenience and usability of caregiver and user are improved, in particular, The scytitis that can be prevented moisture and stool and urine in paper diaper from leading to bacterial multiplication and cause, paper diaper fash and stench etc. Problem.
Also, paper diaper according to the present invention, because it has in breathable film layer side by smearing, injection or printing root The photochromic layer that is formed according to the aqueous ink composition that pH changes and changes colour, without in the prior art for by litmus paper or being stained with The paper of upper indicator adheres to the outer cover of paper diaper or the chemical adhesive of inner cover, can also be become according to the discoloration judgement of pH variation It must be easy.
Detailed description of the invention
Fig. 1 is being changed and the sectional view of the laminated film of discoloration according to pH for one embodiment of the present of invention.
Fig. 2 is the solid of the paper diaper of the laminated film for being changed according to pH and being changed colour comprising one embodiment of the present of invention Figure.
Fig. 3 is the section of the section (A-A ') of the paper diaper of the laminated film to change colour comprising being changed according to pH in Fig. 2 Figure.
Fig. 4 is the figure for showing the structure of Styrene-acrylic copolymer resin of one embodiment of the present of invention.
Symbol description
100: laminated film
10: breathable film layer
20: photochromic layer
200: absorption pad
300: thin slice
Specific embodiment
The embodiment of the present invention is illustrated with reference to the accompanying drawings, so that the ordinary skill people of the technical field of the invention Member can easily implement.But the present invention can be realized by a variety of different forms, it is not limited to implementation described herein Example.Also, the part unrelated with explanation of the invention is omitted in order to explain in precise term in attached drawing.
Term used in specification and claims of the invention or word be not necessarily to be construed as it is common the meaning or The meaning in dictionary, should illustrate the invention of oneself with most perfect method in line with inventor and can suitably to term into Row definition principle and be interpreted to meet the meaning and concept of technical idea of the invention.
In the whole instruction of the invention, other than having particular provisions, certain a part of a certain constituent element of " comprising " is simultaneously Do not refer to and exclude other constituent elements, and refers to and may also include other constituent elements.
In the whole instruction of the invention, " A and/or B " indicates A or B or A and B.
The present invention is illustrated with reference to the accompanying drawings, but the present invention is not limited to this.
The present invention provides a kind of laminated film to change colour according to pH variation.
One embodiment of the present of invention provides a kind of laminated film of pH variation that can detect by an unaided eye immediately comprising liquid Body impermeability breathable film layer and in liquid impermeability breathable film layer side using including water-soluble resin, rosin The aqueous oil for closing object, pH indicator, organic acid, solvent, silane compound and capable of changing according to pH for adhesive and changing colour The photochromic layer that ink composition is formed.
Fig. 1 is one embodiment of the present of invention, is become including breathable film layer 10 and being changed according to pH for photochromic layer 20 The sectional view of the laminated film 100 of color.
Breathable film layer 10 is formed by gas and vapor permeable but the impervious film of liquid.The present embodiment is breathed freely Film is squeezed and is stretched and manufactured after can be the mixing inorganic matters such as polyolefin and calcium carbonate, and mixing polyene is also possible to It is squeezed and is stretched after hydrocarbon and organic solvent and extract the organic solvent and manufactured, but not limited to this.The present embodiment Breathable film layer 10 is not limited to above content, and the breathable films of well known all kinds can be used.
The polyolefin resin can be selected from including low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene And the homopolymer of high density polyethylene (HDPE), using ethylene as the copolymer of principal component, polypropylene homopolymer, using propylene being total to as principal component At least one of polymers and polybutene, but not limited to this.
Photochromic layer 20 is to utilize the aqueous oil for changing according to pH and changing colour in 10 side of liquid impermeability breathable film layer What ink composition was formed.Preferably, it smears, spray or prints in 10 side of liquid impermeability breathable film layer and changed according to pH And change colour aqueous ink composition and make its harden and form photochromic layer 20, but not limited to this.
The smearing or injection can be realized by well known all methods.Also, the printing can use without restriction Intaglio printing, flexible version printing, silk-screen printing, hectographic printing, print process well known to ink jet printing etc., it is preferable that use intaglio plate Printing or flexible version printing.
It includes water-soluble resin that the aqueous ink composition of photochromic layer 20 is formed in the present embodiment, and rosin compound, pH refers to Show agent, organic acid, solvent, silane compound and adhesive, by the aqueous ink composition total weight, the present embodiment Aqueous ink composition may include 20~45 weight % of water-soluble resin, 0.5~3 weight %, pH indicator of rosin compound 2~10 weight %, 0.1~2 weight % of organic acid, 50~70 weight % of solvent, 1~5 weight % of silane compound and bonding 1~5 weight % of agent.
Accordingly, the photochromic layer 20 of the present embodiment due to being changed according to pH the fast speed that change colour and pH change can be grasped rapidly Change, and bonding force is excellent without other adhesion substance, therefore both economically and environmentally beneficial.Also, because pH variation be easier to and Adhesiveness is excellent, moreover it is possible to improve the duration of color change state.
Water-soluble resin assigns the film performance of the aqueous ink composition of the present embodiment, generates shadow to viscosity and adhesiveness It rings.The water-soluble resin of this present embodiment may include selected from methylolurea resin, melamine methylol resin, polyethylene Alcohol, polyacrylamide resin, carboxymethyl cellulose resin, acrylate, acrylated polyurethane resin, polyacrylic acid tree Rouge, maleic anhydride resin, gelatin resin, polyethyleneglycol resins, Styrene-acrylic copolymer resin and soluble polyurethane tree At least one of rouge.
The Styrene-acrylic copolymer resin can be styrene, the copolymer of α-methylstyrene and acrylic acid, Preferably, such as the structure of Fig. 4, by 0.35 mole of styrene, 0.33 mole of α-methylstyrene and 0.32 mole of acrylic acid rub You are constituted ratio, but not limited to this.
Preferably, the water-soluble resin of the present embodiment can be Styrene-acrylic copolymer resin and water-soluble poly ammonia The mixture of ester resin.If the mixed property of ingredient can be improved using their mixture, with the raising of coating characteristic, discoloration Layer 20 can quick color-changing while with excellent bonding force.
In particular, including the Styrene-acrylic copolymer resin and water-soluble poly ammonia with the weight ratio of 1:0.1~0.7 Ester resin, the preferably weight ratio of 1:0.1~0.5, the weight ratio of more preferable 1:0.2~0.3, if exceeding the weight ratio range, Then the film performance of the aqueous ink composition of the present embodiment can reduce, while rate of drying can also reduce and bonding force can become It is weak.
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment may include water-soluble resin 20~ 45 weight %, preferably 25~45 weight %, further preferred 28~40 weight %.By aqueous ink composition total weight, if Water-soluble resin is less than 20 weight %, then while the film performance of aqueous ink composition can reduce, adhesiveness and viscosity It can reduce, if water-soluble resin is more than 45 weight %, the viscosity of aqueous ink composition can be excessively high, will lead to the drop of workability It is low.
Rosin compound is the condensation product form of rosin and alkylene oxide, preferably rosin (rosin) be selected from ethylene oxide (ethylene oxide), at least one of propylene oxide (propylene oxide) and their mixture are condensed The condensation product of reaction.While can be improved the bonding force of the aqueous ink composition of the present embodiment, further increase it is a variety of at The mixed property divided.
Rosin (rosin) is faint yellow or brown, it is transparent and have glassy lustre, containing the various resin acids such as rosin acid with A small amount of ash content is divided into gum rosin (gum rosin), wood rosin (wood rosin) etc. according to preparation method.The gum rosin is It cuts open and removes terebinthine resin after pine tree trunk takes rosin to distill, the wood rosin is to carry out the rhizome of pine tree or branch etc. The terebinthine resin of volatility is removed after steam distillation.
Preferably, the rosin of the present embodiment can be gum rosin, but not limited to this.
The rosin of the present embodiment is comprising selected from rosin acid (abietic acid), neoabietic acid (neoabietic Acid), palustric acid (palustric acid), dihydro rosin acid (dihydro abietic acid) and pimaric acid The natural materials of at least one of (pimaric acid) can contain a small amount of ash content.Preferably, by rosin total weight, institute Stating rosin may include 25~50 weight % of rosin acid, 13~17 weight % of neoabietic acid, 4~13 weight % of palustric acid, dihydro Change 4~15 weight % of rosin acid and 18~30 weight % of pimaric acid, but not limited to this.The rosin can be gum rosin.
In the present embodiment, rosin and ethylene oxide, at least one of propylene oxide and their mixture are condensed Reaction, ethylene oxide or propylene oxide can be used by pretreated as needed.The pretreatment can be sour processing, alkali Processing, heat treatment etc., but not limited to this.Also, the mixture of the ethylene oxide and propylene oxide can be simple mixing Ethylene oxide and propylene oxide, optimization ethylene oxide is reacted with propylene oxide and is combined, but not limited to this.
The rosin compound of the present embodiment can be the rosin is combined with ethylene oxide repetition or and propylene oxide Combination is repeated, is also possible to repeat to be combined at random or in a manner of intersection with ethylene oxide and propylene oxide.For example, can shape At rosin-[EO] n, rosin-[PO] n, rosin-[EO-PO] n, the forms such as rosin-[PO-EO] n.Wherein, n, which refers to, rubs to rosin 1 Your molar ratio, n can be 1~100.
Preferably, the rosin compound of the present embodiment is anti-by the condensation of ethylene oxide and the mixture and rosin of propylene oxide It should be formed.Therefore, as the mixed property of ingredient improves, color change can become faster, and can have excellent bonding effect. That is, rosin compound, which can be, combines ethylene oxide (oxy-ethylene ,-O-CH on the acidic group (acid radical) of rosin2- CH2) and oxypropylene (oxy propylene ,-O-CH2-CH(CH3The structure of) -).
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment may include rosin compound 0.5 ~3 weight %, preferably 0.5~2 weight %, more preferable 0.8~1.2 weight %.By aqueous ink composition total weight, if loose Aroma compounds can lead to the aqueous ink composition of the present embodiment because viscosity is low and adhesiveness is insufficient less than 0.5 weight % It is unable to fully adhere to breathable film layer 10, the mixed property of each ingredient can reduce.On the contrary, pressing aqueous ink composition total weight And when more than 3 weight %, the viscosity that will lead to aqueous ink composition is got higher, and drying time is elongated, and water-based ink is caused to combine The acidification of object.In particular, pH is reduced if there is the acidification of aqueous ink composition, can be dropped according to the characteristic that pH changes and changes colour It is low.
PH indicator includes to be selected from cresol red (Cresol red), m-cresol purple (m-Cresol purple), thymol blue (Thymol blue), 2,6- dinitrophenol (2,6-Dinitrophenol), 2,4-DNP (2,4- Dinitrophenol), 4- dimethylaminoazobenzene (4-Dimethylaminoazobenzene), bromophenol blue (Bromophenol blue), Congo red (Congo red), methyl orange (Methyl orange), ethyoxyl Huang rebukes essence (Ethoxychrysoidine), bromocresol green (Bromocresol green), 2,5- dinitrophenol (2,5- Dinitrophenol), methylene red (Methylene red), phenol red (Phenol red), bromocresol purple (Bromocresol Purple), 4- nitrophenol (4-Nitrophenol), xylene bromide indigo plant (Bromoxylene blue), bromthymol blue At least one in (Bromothymol blue), 3- nitrophenol (3-Nitrophenol) and phenolphthalein (Phenolphthalein) Kind.
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment may include pH indicator 2~10 Weight %, preferably 2~7 weight %, more preferable 3~5 weight %.By aqueous ink composition total weight, if pH indicator is not 2 weight % of foot, the color change occurred according to pH can be extremely small, if more than 10 weight %, it can be uneconomical, it may appear that because of pH Indicator and cause aqueous ink composition bonding force reduce the problem of.
Organic acid is pH adjusting agent, may include low molecular weight organic acid and high molecular weight organic acid.The low molecular weight has Machine acid may include selected from glycolic, citric acid, EDTA, lactic acid, amino acid, ascorbic acid, oxalic acid, maleic acid, tartaric acid, bigcatkin willow Acid, at least one of palmitinic acid and stearic acid, but not limited to this.Also, the high molecular weight organic acid may include comprising choosing From polyacrylic acid, polymethylacrylic acid, the copolymer of at least one of acrylic acid and methacrylic acid, but not limited to this.
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment may include 0.1~2 weight of organic acid Measure %, preferably 0.1~1 weight %, further preferred 0.1~0.5 weight %.By aqueous ink composition total weight, if pH Regulator is less than 0.1 weight %, it may appear that pH reacting condition sensitive issue, if being changed according to pH and being become more than 2 weight % The time of color can be elongated.
Solvent can dissolve the water-soluble resin for constituting the aqueous ink composition of the present embodiment, rosin compound, and pH refers to Show agent, organic acid, silane compound and adhesive and guide the mixing of the substance, plays and adjust aqueous ink composition The effect of viscosity.
The solvent of the present embodiment can be water and alcohols, and alcohols may include selected from methanol, ethyl alcohol, propyl alcohol, isopropanol, positive fourth Alcohol, isobutanol, sec-butyl alcohol, the tert-butyl alcohol, ethylene glycol, diethylene glycol (DEG), triethylene glycol, propylene glycol, butanediol, hexylene glycol, thiodiglycol, oneself Alkane -1,2,6- triol, glycol monoethyl ether, ethylene glycol monoethyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, triethylene glycol Monomethyl ether, triethanolamine, diethanol amine, at least one of monoethanolamine and glycerol, but not limited to this.
Based on 100 parts by weight of water, solvent may include 4~10 parts by weight of alcohol, preferably 4.5~8 parts by weight, further preferred 5 ~6 parts by weight, but not limited to this.It is described if the alcohol that the solvent of the present embodiment includes is less than 4 parts by weight based on 100 parts by weight of water Substance is unable to fully be dissolved into solvent, especially, in fact it could happen that can not equably mixed rosin the problem of.On the contrary, pressing 100 weight of water Part meter, if the alcohol that the solvent of the present embodiment includes is more than 10 parts by weight, the rate of drying of aqueous ink composition can become faster, may There is the problem of viscosity-modifying of aqueous ink composition in printing process.
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment includes 50~70 weight of solvent Measure %, preferably 50~65 weight %, further preferred 54~65 weight %.By aqueous ink composition total weight, if solvent Less than 50 weight %, usability can be caused to reduce because of the enhancing of the viscosity of aqueous ink composition, and the substance can not be equal It mixes evenly, if bonding force can be caused to reduce due to the viscosity of aqueous ink composition dies down, water-based ink more than 70 weight % Composition is unable to fully adhere to breathable film layer 10 and harden, it may appear that the problem of printing efficiency reduces.
The effect of silane compound is when the aqueous ink composition of raising the present embodiment changes according to pH and changed colour Colour rendering, therefore it is able to observe that clearly color change, while improving bonding force.In addition, public affairs can be used in silane compound The substance for all kinds known.For example, silane compound can be by organic matter aminopropyl (Aminopropyl) and inorganic matter The chemical reaction of triethoxy silicon substrate (Triethoxysilyl) and it is manufactured, but not limited to this.
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment may include silane compound 1 ~5 weight %, preferably 1~4 weight %, further preferred 1~3 weight %.By aqueous ink composition total weight, if silane Class compound is less than 1 weight %, and making color change, clearly effect can be faint, and bonding force can reduce.On the contrary, pressing water-based ink group Object total weight is closed, if silane compound is more than 5 weight %, the viscosity of aqueous ink composition can enhance and being likely to occur makes With the low problem of property and printing efficiency.
Well known all kinds can be used in adhesive, and it is, for example, possible to use include methyl methacrylate, metering system Acetoacetic ester, butyl methacrylate, propyl methacrylate, the acrylic compounds aqueous binder of ethylene glycol dimethacrylate etc. Agent, but not limited to this.
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment may include 1~5 weight of adhesive Measure %, preferably 1~4 weight %, further preferred 1~3 weight %.By aqueous ink composition total weight, if adhesive is not 1 weight % of foot, bonding effect can be faint, if can lead to the drop of usability and printing efficiency because viscosity is too high more than 5 weight % It is low, also it can judge that pH variation causes difficulty to by pH indicator.
In addition, the aqueous ink composition of the present embodiment may also include adsorbent.In the present embodiment, adsorbent absorption pH refers to Show agent, so that the pH indicator steadily exists in aqueous ink composition, so that will not produce after pH indicator discoloration Raw color change or color are fuzzy etc..Also, adsorbent can not only improve the film performance of aqueous ink composition, moreover it is possible to adjust Save drying time.
The adsorbent of the present embodiment may include selected from silica, titanium dioxide, magnesium carbonate, calcium carbonate, barium sulfate, sulfuric acid Calcium, at least one of zinc oxide and aluminium oxide, but not limited to this.Also, the adsorbent in the present embodiment can be aqueous oil 0.1~0.9 times of weight of total usage amount of the pH indicator of ink composition, but not limited to this.
Also, the aqueous ink composition of the present embodiment may also include pigment.
Photochromic layer 20 as described above is formed in the side of breathable film layer 10, will not be to the liquid of breathable film layer 10 The infiltration etc. of impermeability, gas or vapor impacts.Also, breathable films with a thickness of 5~40gsm, be formed in Can with the naked eye it confirm in the other side of breathable films whether the discoloration of the photochromic layer 20 of the side of gas film.
The breathable films with a thickness of 5~40gsm, preferably 10~30gsm, further preferred 10~25gsm, but not It is limited to this.Also, the moisture permeability of breathable films can be 2000~7000g/m21D, but not limited to this.
The photochromic layer 20 of the present embodiment is changed according to pH and is become rapidly because being formed using above-mentioned aqueous ink composition Color whether capable of promptly grasping pH variation, and adheres to breathable film layer 10 with excellent bonding force, glues without other Substance is closed, is changed according to pH and is easy to carry out discoloration judgement.In addition to this, the aqueous ink composition of the present embodiment does not use Aromatic hydrocarbon solvent, ketones solvent, acetic acid salt solvent, a large amount of volatile organic compounds of the generations such as chlorine class solvent (VOC: Volatile Organic Compounds) organic solvent, therefore be good for the environment, compared with existing oil-based ink, do Dry speed is similar and bonding force is excellent, is suitble to flexibility version printing and intaglio printing.
In addition, in addition to the water-soluble resin, rosin compound, pH indicator, adsorbent, organic acid, solvent, silanes Except compound and adhesive, the aqueous ink composition of the present embodiment also may include additive.For example, additive may include point Powder, defoaming agent, light stabilizer, viscosity modifier, bonding agent, pH adjusting agent etc., but not limited to this, as long as be able to use in Aqueous ink composition, it can use without restriction.
Also, the present invention provides a kind of paper diaper of laminated film to change colour comprising changing according to pH.
One embodiment of the present of invention provides a kind of paper diaper, can be changed according to pH and be changed colour, so as to use from outside Whether visually observing stool and urine excretion comprising: laminated film, including liquid impermeability breathable film layer and in the liquid The photochromic layer that impermeability breathable film layer side utilizes the aqueous ink composition to be changed colour according to pH variation to be formed；It absorbs Pad, is formed in the upside of the laminated film；And thin slice, it is formed in the upside of the absorption pad, wherein the water-based ink Composition includes water-soluble resin, rosin compound, pH indicator, organic acid, solvent, silane compound and adhesive.
Fig. 2 is the perspective view of the paper diaper of one embodiment of the present of invention, Fig. 3 be Fig. 2 shows paper diaper the side A-A ' To sectional view.
Referring to Fig. 2 and Fig. 3, the form of the paper diaper of the present embodiment forms absorption between laminated film 100 and thin slice 300 Pad 200, laminated film 100 and the edge of thin slice 300 mutually bond, and absorption pad 200 is not to outer exposed.
Laminated film 100 is including liquid impermeability breathable film layer 10 and in the liquid impermeability breathable films The photochromic layer 20 that the side of layer 10 utilizes the aqueous ink composition to be changed colour according to pH variation to be formed.Referring to Fig. 2, laminated film 100 be the outer cover or exterior sheet of paper diaper, can prevent the liquid substance for being absorbed the absorption of pad 200 from leaking to the outside, but Air or vapor can permeate.
Breathable film layer 10 is formed by gas and vapor permeable but the impervious film of liquid.The present embodiment is breathed freely Film is squeezed and is stretched and manufactured after can be the mixing inorganic matters such as polyolefin and calcium carbonate, and mixing polyene is also possible to Hydrocarbon and lubricant, plasticizer, wax are squeezed and are stretched after the organic solvent such as oil, the organic solvent described in solvent extraction and make At, but not limited to this.The breathable film layer 10 of the present embodiment is not limited to above content, and well known all kinds can be used Breathable films.
The polyolefin resin can be selected from including low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene And the homopolymer of high density polyethylene (HDPE), using ethylene as the copolymer of principal component, polypropylene homopolymer, using propylene being total to as principal component At least one of polymers and polybutene, but not limited to this.
Photochromic layer 20 is to utilize the aqueous oil for changing according to pH and changing colour in 10 side of liquid impermeability breathable film layer What ink composition was formed.Preferably, it smears, spray or prints in 10 side of liquid impermeability breathable film layer and changed according to pH And change colour aqueous ink composition and make its harden and form photochromic layer 20, but not limited to this.
The smearing or injection can be realized by well known all methods.Also, the printing can use without restriction Intaglio printing, flexible version printing, silk-screen printing, hectographic printing, print process well known to ink jet printing etc., it is preferable that use intaglio plate Printing or flexible version printing.
It includes water-soluble resin that the aqueous ink composition of photochromic layer 20 is formed in the present embodiment, and rosin compound, pH refers to Show agent, organic acid, solvent, silane compound and adhesive, by the aqueous ink composition total weight, the present embodiment Aqueous ink composition may include 20~45 weight % of water-soluble resin, 0.5~3 weight %, pH indicator of rosin compound 2~10 weight %, 0.1~2 weight % of organic acid, 50~70 weight % of solvent, 1~5 weight % of silane compound and bonding 1~5 weight % of agent.
Accordingly, the photochromic layer 20 of the present embodiment due to being changed according to pH the fast speed that change colour and pH change can be grasped rapidly Change, and bonding force is excellent without other adhesion substance, therefore both economically and environmentally beneficial.Also, because pH variation be easier to and Adhesiveness is excellent, moreover it is possible to improve the duration of color change state.
Water-soluble resin assigns the film performance of the aqueous ink composition of the present embodiment, generates shadow to viscosity and adhesiveness It rings.The water-soluble resin of this present embodiment may include selected from methylolurea resin, melamine methylol resin, polyethylene Alcohol, polyacrylamide resin, carboxymethyl cellulose resin, acrylate, acrylated polyurethane resin, polyacrylic acid tree Rouge, maleic anhydride resin, gelatin resin, polyethyleneglycol resins, Styrene-acrylic copolymer resin and soluble polyurethane tree At least one of rouge.
The Styrene-acrylic copolymer resin can be styrene, the copolymer of α-methylstyrene and acrylic acid, Preferably, such as the structure of Fig. 4, by 0.35 mole of styrene, 0.33 mole of α-methylstyrene and 0.32 mole of acrylic acid rub You are constituted ratio, but not limited to this.
Preferably, the water-soluble resin of the present embodiment can be Styrene-acrylic copolymer resin and water-soluble poly ammonia The mixture of ester resin.If the mixed property of ingredient can be improved using their mixture, with the raising of coating characteristic, discoloration Layer 20 can quick color-changing while with excellent bonding force.
In particular, including the Styrene-acrylic copolymer resin and water-soluble poly ammonia with the weight ratio of 1:0.1~0.7 Ester resin, the preferably weight ratio of 1:0.1~0.5, the weight ratio of more preferable 1:0.2~0.3, if exceeding the weight ratio range, Then the film performance of the aqueous ink composition of the present embodiment can reduce, while rate of drying can also reduce and bonding force can become It is weak.
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment may include water-soluble resin 20~ 45 weight %, preferably 25~45 weight %, further preferred 28~40 weight %.By aqueous ink composition total weight, if Water-soluble resin is less than 20 weight %, then while the film performance of aqueous ink composition can reduce, adhesiveness and viscosity It can reduce, if water-soluble resin is more than 45 weight %, the viscosity of aqueous ink composition can be excessively high, will lead to the drop of workability It is low.
Rosin compound is the condensation product form of rosin and alkylene oxide, preferably rosin (rosin) be selected from ethylene oxide (ethylene oxide), at least one of propylene oxide (propylene oxide) and their mixture are condensed The condensation product of reaction.While can be improved the bonding force of the aqueous ink composition of the present embodiment, further increase it is a variety of at The mixed property divided.
Rosin (rosin) is faint yellow or brown, it is transparent and have glassy lustre, containing the various resin acids such as rosin acid with A small amount of ash content is divided into gum rosin, wood rosin etc. according to preparation method.The gum rosin be cut open pine tree trunk take rosin distill after Terebinthine resin is removed, the wood rosin is to remove volatility turpentine after the rhizome of pine tree or branch etc. to be carried out to steam distillation The resin of oil.
Preferably, the rosin of the present embodiment can be gum rosin, but not limited to this.
The rosin of the present embodiment is comprising selected from rosin acid (abietic acid), neoabietic acid (neoabietic Acid), palustric acid (palustric acid), dihydro rosin acid (dihydro abietic acid) and pimaric acid The natural materials of at least one of (pimaric acid) can contain a small amount of ash content.Preferably, by rosin total weight, institute Stating rosin may include 25~50 weight % of rosin acid, 13~17 weight % of neoabietic acid, 4~13 weight % of palustric acid, dihydro Change 4~15 weight % of rosin acid and 18~30 weight % of pimaric acid, but not limited to this.The rosin can be gum rosin.
In the present embodiment, rosin and ethylene oxide, at least one of propylene oxide and their mixture are condensed Reaction, ethylene oxide or propylene oxide can be used by pretreated as needed.The pretreatment can be sour processing, alkali Processing, heat treatment etc., but not limited to this.Also, the mixture of the ethylene oxide and propylene oxide can be simple mixing Ethylene oxide and propylene oxide, optimization ethylene oxide is reacted with propylene oxide and is combined, but not limited to this.
The rosin compound of the present embodiment can be the rosin is combined with ethylene oxide repetition or and propylene oxide Combination is repeated, is also possible to repeat to be combined at random or in a manner of intersection with ethylene oxide and propylene oxide.For example, can shape At rosin-[EO] n, rosin-[PO] n, rosin-[EO-PO] n, the forms such as rosin-[PO-EO] n.Wherein, n, which refers to, rubs to rosin 1 Your molar ratio, n can be 1~100.
Preferably, the rosin compound of the present embodiment is anti-by the condensation of ethylene oxide and the mixture and rosin of propylene oxide It should be formed.Therefore, as the mixed property of ingredient improves, color change can become faster, and can have excellent bonding effect. That is, rosin compound, which can be, combines ethylene oxide (oxy-ethylene ,-O-CH on the acidic group (acid radical) of rosin2- CH2) and oxypropylene (oxy propylene ,-O-CH2-CH(CH3The structure of) -).
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment may include rosin compound 0.5 ~3 weight %, preferably 0.5~2 weight %, more preferable 0.8~1.2 weight %.By aqueous ink composition total weight, if loose Aroma compounds can lead to the aqueous ink composition of the present embodiment because viscosity is low and adhesiveness is insufficient less than 0.5 weight % It is unable to fully adhere to breathable film layer 10, the mixed property of each ingredient can reduce.On the contrary, pressing aqueous ink composition total weight And when more than 3 weight %, the viscosity that will lead to aqueous ink composition is got higher, and drying time is elongated, and water-based ink is caused to combine The acidification of object.In particular, pH is reduced if there is the acidification of aqueous ink composition, can be dropped according to the characteristic that pH changes and changes colour It is low.
PH indicator includes to be selected from cresol red (Cresol red), m-cresol purple (m-Cresol purple), thymol blue (Thymol blue), 2,6- dinitrophenol (2,6-Dinitrophenol), 2,4-DNP (2,4- Dinitrophenol), 4- dimethylaminoazobenzene (4-Dimethylaminoazobenzene), bromophenol blue (Bromophenol blue), Congo red (Congo red), methyl orange (Methyl orange), ethyoxyl Huang rebukes essence (Ethoxychrysoidine), bromocresol green (Bromocresol green), 2,5- dinitrophenol (2,5- Dinitrophenol), methylene red (Methylene red), phenol red (Phenol red), bromocresol purple (Bromocresol Purple), 4- nitrophenol (4-Nitrophenol), xylene bromide indigo plant (Bromoxylene blue), bromthymol blue At least one in (Bromothymol blue), 3- nitrophenol (3-Nitrophenol) and phenolphthalein (Phenolphthalein) Kind.
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment may include pH indicator 2~10 Weight %, preferably 2~7 weight %, more preferable 3~5 weight %.By aqueous ink composition total weight, if pH indicator is not 2 weight % of foot, the color change occurred according to pH can be extremely small, if more than 10 weight %, it can be uneconomical, it may appear that because of pH Indicator and cause aqueous ink composition bonding force reduce the problem of.
Organic acid is pH adjusting agent, may include low molecular weight organic acid and high molecular weight organic acid.The low molecular weight has Machine acid may include selected from glycolic, citric acid, EDTA, lactic acid, amino acid, ascorbic acid, oxalic acid, maleic acid, tartaric acid, bigcatkin willow Acid, at least one of palmitinic acid and stearic acid, but not limited to this.Also, the high molecular weight organic acid may include comprising choosing From polyacrylic acid, polymethylacrylic acid, the copolymer of at least one of acrylic acid and methacrylic acid, but not limited to this.
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment may include 0.1~2 weight of organic acid Measure %, preferably 0.1~1 weight %, further preferred 0.1~0.5 weight %.By aqueous ink composition total weight, if pH Regulator is less than 0.1 weight %, it may appear that pH reacting condition sensitive issue, if being changed according to pH and being become more than 2 weight % The time of color can be elongated.
Solvent can dissolve the water-soluble resin for constituting the aqueous ink composition of the present embodiment, rosin compound, and pH refers to Show agent, organic acid, silane compound and adhesive and guide the mixing of the substance, plays and adjust aqueous ink composition The effect of viscosity.
The solvent of the present embodiment can be water and alcohols, and alcohols may include selected from methanol, ethyl alcohol, propyl alcohol, isopropanol, positive fourth Alcohol, isobutanol, sec-butyl alcohol, the tert-butyl alcohol, ethylene glycol, diethylene glycol (DEG), triethylene glycol, propylene glycol, butanediol, hexylene glycol, thiodiglycol, oneself Alkane -1,2,6- triol, glycol monoethyl ether, ethylene glycol monoethyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, triethylene glycol Monomethyl ether, triethanolamine, diethanol amine, at least one of monoethanolamine and glycerol, but not limited to this.
Based on 100 parts by weight of water, solvent may include 4~10 parts by weight of alcohol, preferably 4.5~8 parts by weight, further preferred 5 ~6 parts by weight, but not limited to this.It is described if the alcohol that the solvent of the present embodiment includes is less than 4 parts by weight based on 100 parts by weight of water Substance is unable to fully be dissolved into solvent, especially, in fact it could happen that can not equably mixed rosin the problem of.On the contrary, pressing 100 weight of water Part meter, if the alcohol that the solvent of the present embodiment includes is more than 10 parts by weight, the rate of drying of aqueous ink composition can become faster, may There is the problem of viscosity-modifying of aqueous ink composition in printing process.
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment includes 50~70 weight of solvent Measure %, preferably 50~65 weight %, further preferred 54~65 weight %.By aqueous ink composition total weight, if solvent Less than 50 weight %, usability can be caused to reduce because of the enhancing of the viscosity of aqueous ink composition, and the substance can not be equal It mixes evenly, if bonding force can be caused to reduce due to the viscosity of aqueous ink composition dies down, water-based ink more than 70 weight % Composition is unable to fully adhere to breathable film layer 10 and harden, it may appear that the problem of printing efficiency reduces.
The effect of silane compound is when the aqueous ink composition of raising the present embodiment changes according to pH and changed colour Colour rendering, therefore it is able to observe that clearly color change, while improving bonding force.In addition, public affairs can be used in silane compound The substance for all kinds known.For example, silane compound can be by organic matter aminopropyl (Aminopropyl) and inorganic matter The chemical reaction of triethoxy silicon substrate (Triethoxysilyl) and it is manufactured, but not limited to this.
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment may include silane compound 1 ~5 weight %, preferably 1~4 weight %, further preferred 1~3 weight %.By aqueous ink composition total weight, if silane Class compound is less than 1 weight %, and making color change, clearly effect can be faint, and bonding force can reduce.On the contrary, pressing water-based ink group Object total weight is closed, if silane compound is more than 5 weight %, the viscosity of aqueous ink composition can enhance and being likely to occur makes With the low problem of property and printing efficiency.
Well known all kinds can be used in adhesive, and it is, for example, possible to use include methyl methacrylate, metering system Acetoacetic ester, butyl methacrylate, propyl methacrylate, the acrylic compounds aqueous binder of ethylene glycol dimethacrylate etc. Agent, but not limited to this.
By aqueous ink composition total weight, the aqueous ink composition of the present embodiment may include 1~5 weight of adhesive Measure %, preferably 1~4 weight %, further preferred 1~3 weight %.By aqueous ink composition total weight, if adhesive is not 1 weight % of foot, bonding effect can be faint, if can lead to the drop of usability and printing efficiency because viscosity is too high more than 5 weight % It is low, also it can judge that pH variation causes difficulty to by pH indicator.
In addition, the aqueous ink composition of the present embodiment may also include adsorbent.In the present embodiment, adsorbent absorption pH refers to Show agent, so that the pH indicator steadily exists in aqueous ink composition, so that will not produce after pH indicator discoloration Raw color change or color are fuzzy etc..Also, adsorbent can not only improve the film performance of aqueous ink composition, moreover it is possible to adjust Save drying time.
The adsorbent of the present embodiment may include selected from silica, titanium dioxide, magnesium carbonate, calcium carbonate, barium sulfate, sulfuric acid Calcium, at least one of zinc oxide and aluminium oxide, but not limited to this.Also, the adsorbent in the present embodiment can be aqueous oil 0.1~0.9 times of weight of total usage amount of the pH indicator of ink composition, but not limited to this.
Photochromic layer 20 as described above is formed in the side of breathable film layer 10, will not be to the liquid of breathable film layer 10 The infiltration etc. of impermeability, gas or vapor impacts.
Photochromic layer 20 as described above is formed in the side of breathable film layer 10, will not be to the liquid of breathable film layer 10 The infiltration etc. of impermeability, gas or vapor impacts, be formed in the discoloration of the photochromic layer 20 of the side of breathable films with It is no with the naked eye to confirm in the other side of breathable films.
The photochromic layer 20 of the present embodiment is changed according to pH and is become rapidly because being formed using above-mentioned aqueous ink composition Color whether capable of promptly grasping pH variation, and adheres to breathable film layer 10 with excellent bonding force, glues without other Substance is closed, is changed according to pH and is easy to carry out discoloration judgement.In addition to this, the aqueous ink composition of the present embodiment does not use Aromatic hydrocarbon solvent, ketones solvent, acetic acid salt solvent, a large amount of volatile organic compounds of the generations such as chlorine class solvent (VOC: Volatile Organic Compounds) organic solvent, therefore be good for the environment, compared with existing oil-based ink, do Dry speed is similar and bonding force is excellent, is suitble to flexibility version printing and intaglio printing.
In addition, in addition to the water-soluble resin, rosin compound, pH indicator, adsorbent, organic acid, solvent, silanes Except compound and adhesive, the aqueous ink composition of the present embodiment also may include additive.For example, additive may include point Powder, defoaming agent, light stabilizer, viscosity modifier, bonding agent, pH adjusting agent etc., but not limited to this, as long as be able to use in Aqueous ink composition, it can use without restriction.
Absorption pad 200 is formed in the upside of laminated film 100, plays the liquid material in the stool and urine for absorbing user's discharge The effect of matter.All absorptive substances or even material being able to use in paper diaper can be used in the absorption pad 200 of the present embodiment.Example Such as, cotton, cotton, cloth, fiber, paper pulp, super absorbent resin (SAP, Supeer Absorbent Polymer) etc., preferably paper pulp With the mixture of super absorbent resin, but not limited to this.Absorption pad 200 in the present embodiment can have variform, it is preferable that Its size is less than the laminated film 100 of 200 downside of absorption pad.
Referring to Fig. 2 and Fig. 3, when the liquid substance in the stool and urine for being absorbed the absorption of pad 200 touches laminated film 100 When photochromic layer 20, the photochromic layer 20 of laminated film 100 changes according to pH and is changed colour, and can with the naked eye confirm from outside.
Thin slice 300 is formed in the upside of absorption pad 200, and the liquid substance facilitated in the stool and urine of user's discharge is inhaled It receives pad 200 to absorb, while completely cutting off absorption pad 200 and being contacted with the direct of body, can be improved stability, wholesomeness, usability etc.. The thin slice 300 of the present embodiment can be by being selected from cotton, non-woven fabrics, staple fibre, any one in silk and tencel (Tencel) Material is formed, but not limited to this, as long as being used for the material of paper diaper, can use without restriction.
The paper diaper of the present embodiment can may also include absorption transfer layer between absorption pad 200 and thin slice 300 (ADL.Ac1uisition and Distribution Layer), so that absorption pad 200 can quickly absorb in stool and urine Liquid substance, but not limited to this.The absorption transfer layer is formed between thin slice 300 and absorption pad 200, can make stool and urine Middle liquid substance is quickly spread, to improve infiltration rate.
The paper diaper of the present embodiment are in addition to above-mentioned laminated film 100, absorption pad 200, thin slice 300 and absorb transfer layer it Outside, it may also include waterproof layer, deodorization layer, antibiotic layer etc..
The paper diaper of the present embodiment can be underwear type, adhesive tape type, and the various shapes such as linear type can also wrap as needed Include waistband, stool and urine sensor, temperature detecting element, moisture detection device etc..
The laminated film 100 of the present embodiment plays the role of the outer cover of paper diaper, exterior sheet or main body, but laminated film 100 downside can also form other outer cover or exterior sheet etc..
By following embodiment, comparative example and experimental example illustrate the THIN COMPOSITE of the invention to change colour according to pH variation Film and paper diaper comprising the laminated film.These embodiments are example of the invention, and the scope of the present invention is not limited to These embodiments.
Embodiment
Embodiment 1 to 3
The aqueous ink composition for being changed using the combination manufacture in following table 1 according to pH and being changed colour.
[table 1]
Embodiment 4
In addition to rosin compound uses rosin-[EO]20Except, other are same as Example 2.
Embodiment 5
In addition to rosin compound uses rosin-[PO]20Except, other are same as Example 2.
Embodiment 6
Other than using the rosin compound for utilizing wood rosin, other are same as Example 2.
Embodiment 7
Other than Styrene-acrylic copolymer is used only in water-soluble resin, other are same as Example 2.
Embodiment 8
Other than water soluble polyurethane resin is used only in water-soluble resin, other are same as Example 2.
Embodiment 9
Styrene-acrylic copolymer and soluble polyurethane are mixed with the weight ratio of 1:1 in addition to water-soluble resin uses Except resin, other are same as Example 2.
Comparative example
Comparative example 1 to 9
By the ingredient ratio of the table 2, manufacture same as Example 2ly.
[table 2]
Comparative example 10
Other than substituting rosin compound with gum rosin, other are same as Example 2.
Comparative example 11
Other than substituting rosin compound with wood rosin, other are same as Example 2.
Experimental example
The Time evaluation that experimental example 1: changing according to pH and changes colour
The aqueous ink composition intaglio printing manufactured according to the Examples and Comparative Examples is saturating to liquid impermeability Gas film layer and form photochromic layer, thus produce laminated film (structure identical with Fig. 1).Then, change colour to laminated film After a part (circle of diameter about 2cm) of layer instills the alkaline solution (NaOH solution) of 5 or more pH, the alkaline solution is measured Simultaneously table 3 is recorded in time needed for the part whole discoloration (blue) of contact.
The intaglio printing is in 150 DEG C of temperature hereinafter, 5~40m/min of speed, 20~40kgf/cm of pressure2Condition Lower implementation.Also, pH indicator bromocresol green shows yellow in acid condition, is displayed in blue under alkaline condition, has pH3.8 ~5.4 transition interval.
[table 3]
Referring to the table 3, in the embodiment 1 to 9 using aqueous ink composition of the invention, is changed according to pH and become The speed of color is significantly faster than that comparative example 1 to 11, it is seen that laminated film of the invention changes according to pH and changes colour rapidly.
Also, paper diaper of the invention, can be immediately from external observation because of the photochromic layer comprising changing colour due to variation according to pH To stool and urine (pH 485~8.0) excretion whether.
In addition, in the comparative example 2 that water-soluble resin is excessively used and the comparative example 9 that adhesive is excessively used, because of viscosity Aqueous ink composition is caused not mix uniformly, whole Coloring Time is longer.
Experimental example 2: bonding force evaluation
Crosscutting (cross-cut) is carried out using the aqueous ink composition manufactured according to the Examples and Comparative Examples to survey Try the result such as table 4 of (3359 standard of ASTM D).Table 4 has recorded the average value that 3 crosscutting tests are repeated (after decimal point Two round up).
By 3359 standard of ASTM D, (ink layer) the area 5B separated with substrate is 0% (best), 4B be 5% hereinafter, It is 15~35%, 1B be 35~65%, 0B is 65% or more (worst) that 3B, which is 5~15%, 2B,.
[table 4]
Tacky state Tacky state
Embodiment 1 4.7B Comparative example 1 1.0B
Embodiment 2 5.0B Comparative example 2 3.7B
Embodiment 3 4.7B Comparative example 3 2.0B
Embodiment 4 4.0B Comparative example 4 2.0B
Embodiment 5 4.0B Comparative example 5 2.7B
Embodiment 6 3.7B Comparative example 6 2.3B
Embodiment 7 3.0B Comparative example 7 3.3B
Embodiment 8 3.0B Comparative example 8 1.0B
Embodiment 9 3.3B Comparative example 9 3.7B
Comparative example 10 3.0B
Comparative example 11 2.7B
Crosscutting evaluation result, the tacky state using the embodiment 1 to 9 of aqueous ink composition of the invention are all 3.0B More than, it is seen that bonding force is very excellent.On the contrary, the bonding of the comparative example 1 to 11 of aqueous ink composition of the invention is not used State is obviously poorer than embodiment, shows that photochromic layer is not easy to separate from breathable film layer in laminated film of the invention.
Accordingly, using the paper diaper of the invention of the laminated film without being used for litmus paper or being stained in the prior art The paper of upper indicator adheres to the outer cover of paper diaper or the adhesive of inner cover, can also be become according to the discoloration judgement of pH variation It is easy.
In addition, the comparative example 2 of water-soluble resin is excessively used and the comparative example 9 of adhesive is excessively used because of composition itself Viscosity and without not being able to achieve even spread, tacky state is not good enough.
Experimental example 3: discoloration duration
(1) that carries out the experimental example 1 is detected by an unaided eye later and by the color change state after 4 hours, is had rated Change colour duration.
It is tested with the entitled object of 30~35 years old women 30 with identical eyesight (about 0.8~1.0),Color change state The note 5 having almost no change is divided, and the note 3 that a part fades is divided, then serious 0 point of the note of the degree that fades (only protects its average value Stay one decimal place) table 5 is recorded.
[table 5]
Change colour duration Change colour duration
Embodiment 1 4.5 Comparative example 1 2.3
Embodiment 2 4.8 Comparative example 2 2.8
Embodiment 3 4.5 Comparative example 3 1.4
Embodiment 4 4.0 Comparative example 4 1.8
Embodiment 5 4.0 Comparative example 5 3.0
Embodiment 6 3.0 Comparative example 6 1.5
Embodiment 7 3.4 Comparative example 7 3.3
Embodiment 8 3.4 Comparative example 8 1.6
Embodiment 9 3.7 Comparative example 9 2.8
Comparative example 10 2.1
Comparative example 11 1.9
Referring to the table 5, it can confirm that discoloration duration of the invention (maintenance of color change state) is excellent.
Production Example
(1) laminated film
The aqueous ink composition intaglio printing of embodiment 1 to 9 and comparative example 1 to 11 is breathed freely to liquid impermeability The side of film layer, is hardened and produces the laminated film to form photochromic layer.
(2) paper diaper
Also, laminated film is formed using the aqueous ink composition of the embodiment 1 to 9 and comparative example 1 to 11, The absorption pad for being mixed with water-absorbing resins and paper pulp is formed on the upside of the laminated film, forms thin slice on the upside of the absorption pad (tencel), to produce paper diaper.
* intaglio printing condition: 150 DEG C of temperature is hereinafter, 5~40m/min of speed, 20~40kgf/cm of pressure2
As previously mentioned, the description of the invention is given for example only, general technical staff of the technical field of the invention's energy It enough understands under the premise of not departing from technical idea or essential feature of the invention, it can be easily by deformation implementation of the present invention For other specific forms.It should be understood that being all exemplary in all respects for the embodiment recorded above, rather than limit Property.For example, being described as each component of single shape can be performed separately, in the same manner, it is described as dispersing the constituent element of shape Also can be implemented in the form of combination.
It is illustrated compared to above-mentioned, the scope of the present invention is determined according to claims, it is thus understood that wanted by right It seeks the meaning of book and the form for having altered or deforming that range and its equivalents obtain is included within the scope of the present invention.

Claims (16)

1. a kind of change and the laminated film of discoloration according to pH characterized by comprising
Liquid impermeability breathable film layer；And
The aqueous ink composition for changing and changing colour according to pH is utilized to be formed in the liquid impermeability breathable film layer side Photochromic layer,
Wherein, the aqueous ink composition includes water-soluble resin, rosin compound, pH indicator, organic acid, solvent, silicon Alkyl compound and adhesive.
2. according to claim 1 change and the laminated film of discoloration according to pH, which is characterized in that
By the aqueous ink composition total weight, the aqueous ink composition includes: 20~45 weight of water-soluble resin Measure %, 0.5~3 weight %, pH indicator of rosin compound 2~10 weight %, 0.1~2 weight % of organic acid, solvent 50~70 1~5 weight % of weight %, 1~5 weight % of silane compound and adhesive.
3. according to claim 1 change and the laminated film of discoloration according to pH, which is characterized in that
The rosin compound be rosin (rosin) with selected from ethylene oxide (ethylene oxide), propylene oxide The condensation product of at least one of (propylene oxide) and their mixture progress condensation reaction.
4. according to claim 3 change and the laminated film of discoloration according to pH, which is characterized in that
The rosin includes to be selected from rosin acid (abietic acid), neoabietic acid (neoabietic acid), palustric acid (palustric acid), in dihydro rosin acid (dihydro abietic acid) and pimaric acid (pimaric acid) extremely Few one kind.
5. according to claim 3 change and the laminated film of discoloration according to pH, which is characterized in that
Acidic group (acid radical) and ethylene oxide (oxy-ethylene) and oxygen of the rosin compound with the rosin The structure that propylene (oxy propylene) combines.
6. according to claim 1 change and the laminated film of discoloration according to pH, which is characterized in that
The water-soluble resin includes Styrene-acrylic copolymer resin and water-soluble poly ammonia with the weight ratio of 1:0.1~0.7 Ester resin.
7. according to claim 1 change and the laminated film of discoloration according to pH, which is characterized in that
The pH indicator includes to be selected from cresol red (Cresol red), m-cresol purple (m-Cresol purple), thymol blue (Thymol blue), 2,6- dinitrophenol (2,6-Dinitrophenol), 2,4-DNP (2,4- Dinitrophenol), 4- dimethylaminoazobenzene (4-Dimethylaminoazobenzene), bromophenol blue (Bromophenol blue), Congo red (Congo red), methyl orange (Methyl orange), ethyoxyl Huang rebukes essence (Ethoxychrysoidine), bromocresol green (Bromocresol green), 2,5- dinitrophenol (2,5- Dinitrophenol), methylene red (Methylene red), phenol red (Phenol red), bromocresol purple (Bromocresol Purple), 4- nitrophenol (4-Nitrophenol), xylene bromide indigo plant (Bromoxylene blue), bromthymol blue At least one in (Bromothymol blue), 3- nitrophenol (3-Nitrophenol) and phenolphthalein (Phenolphthalein) Kind.
8. according to claim 1 change and the laminated film of discoloration according to pH, which is characterized in that
The aqueous ink composition also includes adsorbent.
9. a kind of paper diaper of the laminated film to change colour comprising being changed according to pH characterized by comprising
Laminated film, including liquid impermeability breathable film layer and the liquid impermeability breathable film layer side utilize The photochromic layer that the aqueous ink composition to be changed colour according to pH variation is formed；
Absorption pad is formed in the upside of the laminated film；And
Thin slice is formed in the upside of the absorption pad,
Wherein, the aqueous ink composition includes water-soluble resin, rosin compound, pH indicator, organic acid, solvent, silicon Alkyl compound and adhesive.
10. the paper diaper of the laminated film according to claim 9 to change colour comprising being changed according to pH, which is characterized in that
By the aqueous ink composition total weight, the aqueous ink composition includes: 20~45 weight of water-soluble resin Measure %, 0.5~3 weight %, pH indicator of rosin compound 2~10 weight %, 0.1~2 weight % of organic acid, solvent 50~70 1~5 weight % of weight %, 1~5 weight % of silane compound and adhesive.
11. the paper diaper of the laminated film according to claim 9 to change colour comprising being changed according to pH, which is characterized in that
The rosin compound be rosin (rosin) with selected from ethylene oxide (ethylene oxide), propylene oxide The condensation product of at least one of (propylene oxide) and their mixture progress condensation reaction.
12. the paper diaper of the laminated film according to claim 11 to change colour comprising being changed according to pH, which is characterized in that
The rosin includes to be selected from rosin acid (abietic acid), neoabietic acid (neoabietic acid), palustric acid (palustric acid), in dihydro rosin acid (dihydro abietic acid) and pimaric acid (pimaric acid) extremely Few one kind.
13. the paper diaper of the laminated film according to claim 11 to change colour comprising being changed according to pH, which is characterized in that
Acidic group (acid radical) and ethylene oxide (oxy-ethylene) and oxygen of the rosin compound with the rosin The structure that propylene (oxy propylene) combines.
14. the paper diaper of the laminated film according to claim 9 to change colour comprising being changed according to pH, which is characterized in that
The water-soluble resin includes Styrene-acrylic copolymer resin and water-soluble poly ammonia with the weight ratio of 1:0.1~0.7 Ester resin.
15. the paper diaper of the laminated film according to claim 9 to change colour comprising being changed according to pH, which is characterized in that
The pH indicator includes to be selected from cresol red (Cresol red), m-cresol purple (m-Cresol purple), thymol blue (Thymol blue), 2,6- dinitrophenol (2,6-Dinitrophenol), 2,4-DNP (2,4- Dinitrophenol), 4- dimethylaminoazobenzene (4-Dimethylaminoazobenzene), bromophenol blue (Bromophenol blue), Congo red (Congo red), methyl orange (Methyl orange), ethyoxyl Huang rebukes essence (Ethoxychrysoidine), bromocresol green (Bromocresol green), 2,5- dinitrophenol (2,5- Dinitrophenol), methylene red (Methylene red), phenol red (Phenol red), bromocresol purple (Bromocresol Purple), 4- nitrophenol (4-Nitrophenol), xylene bromide indigo plant (Bromoxylene blue), bromthymol blue At least one in (Bromothymol blue), 3- nitrophenol (3-Nitrophenol) and phenolphthalein (Phenolphthalein) Kind.
16. the paper diaper of the laminated film according to claim 9 to change colour comprising being changed according to pH, which is characterized in that
The thin slice is by being selected from cotton, non-woven fabrics, staple fibre, any one material in silk and tencel (Tencel) is formed.
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