CN108705838A - A kind of preparation method of laminated film - Google Patents

A kind of preparation method of laminated film Download PDF

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Publication number
CN108705838A
CN108705838A CN201810533835.1A CN201810533835A CN108705838A CN 108705838 A CN108705838 A CN 108705838A CN 201810533835 A CN201810533835 A CN 201810533835A CN 108705838 A CN108705838 A CN 108705838A
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film
tpu
chitosan
laminated film
preparation
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张大海
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Chungsin Technology Group Co Ltd
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Chungsin Technology Group Co Ltd
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Priority to CN201810533835.1A priority Critical patent/CN108705838A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0036—Heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/08—Impregnating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/302—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/752—Corrosion inhibitor

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses the preparation methods of laminated film provided by the invention, include the following steps：1) the periosteum method of .TPU films stretches；2) dissolves chitosan, 20~30min of ultrasonic disperse；3) .TPU films are dipped into chitosan salt aqueous solution, it takes out after 25~45min, wash with distilled water surface, is dried up later with nitrogen stream, then 25~45min of immersion, taking-up distilled water flushing in the acetone soln of Fluorenone pyridine is placed on again simultaneously to be dried up with nitrogen stream；4) is stretched using PE materials or PET material as base material using flat membrane method；5) by TPU film (I), PE films or PET film and TPU film (II) commonly through rubber-heating roll press, a wheel hot-stretch is carried out in hot state, it is cooled down by metal cooling roller, laminated film is made in the winding of tension force winder.The preparation method of laminated film of the present invention can meet the high intensity, high temperature resistant, transparent good, corrosion-resistant, waterproof, moisture resistance, antibiotic and sterilizing of film, moisten the comprehensive function nourished.

Description

A kind of preparation method of laminated film
Technical field
The present invention relates to field of composite material preparation, specially a kind of preparation method of multi-functional laminated film.
Background technology
Since TPU has the characteristics that high intensity, wear-resisting, elasticity is good, weather-proof so that TPU film has other plastics and rubber The good characteristics such as the incomparable high intensity of glue, high tenacity, wear-resisting, oil resistant, cold-resistant, ageing-resistant, environment-protecting and non-poisonous, degradable；Again With the excellent properties such as Waterproof Breathable, windproof, cold-proof, antibacterial, uvioresistant, therefore it is widely used in auto industry, footwear material, clothes The numerous industry in the fields such as fitting, ready-made clothes, chemical industry, electronics, medical treatment and civil field.TPU film is divided into polyester, polyethers two major classes, Wherein polyesters product has preferable heat resistance and chemical resistance, is widely used in the purposes of substitution PVC product.It is poly- Ethers then has preferable lower temperature resistance, hydrolytic resistance and antimildew and antibacterial, is widely used on the correlated product contacted with water.
PET film is a kind of more comprehensive packing film of performance ratio.Its transparency is good, glossy；With good airtight Property and fragrance protectiveness；The good mechanical performance of PET film, obdurability be it is best in all thermoplastics, tensile strength and Impact strength is more much higher than general film；And very power is good, dimensionally stable, is suitable for the secondary operation such as printing, paper bag.PET film Also there is excellent heat-resisting, cold resistance and good chemical resistance and oil resistivity.But it is intolerant to highly basic；Easy static electrification is prevented Tide is poor, and rate of perviousness is poor.
The transparency of PE films is good with heat sealability, waterproof, moisture-proof；Tensile strength is low, and tensile elongation is big, but is easy hair Wrinkle, 0.03mm films below, tension force is preferably small, and tension wants constant everywhere, more yielding when especially heated, causes Chromatography is difficult.Therefore when dry, film surface temperature should not be excessively high.
As film using face constantly expands, more stringent requirement is proposed to the comprehensive performance of film.From the foregoing, it will be observed that Each film has the limitation in feature, limits the scope of application of film.E is for example wear-resistant in high temperature or fever or antibacterial position Protective film is lost, good anti scuffing, Corrosion Protection are not only required, also there is excellent thermal conductivity and antibiotic and sterilizing, Repair ability is even nourished, quickly to export heat, hot-spot, antibiotic and sterilizing is avoided to realize and moisten nourishing effect.
Invention content
It is an object of the invention to the deficiencies and defect for each film in the prior art, and it is better to develop a kind of performance Laminated film preparation method, meet the high intensity of film, high temperature resistant, transparent good, corrosion-resistant, waterproof, moisture resistance, antibacterial The comprehensive function nourished is moistened in sterilization.
In order to achieve the above objectives, the preparation method of laminated film provided by the invention, includes the following steps：
1) the periosteum method of .TPU films stretches, and stretching ratio is 9~16, and draft temperature is 280 DEG C~300 DEG C；
2) dissolves chitosan, and 20~30min of ultrasonic disperse under the conditions of at 40~60 DEG C；
3) TPU film after stretching is dipped into chitosan salt aqueous solution by, is taken out after 25~45min, clear with distilled water Surface is washed, is dried up later with nitrogen stream, 25~45min of immersion in the acetone soln of Fluorenone pyridine is then placed on again, takes out and use Distilled water flushing is simultaneously dried up with nitrogen stream, i.e., forms one layer of loading chitosan ion film layer on TPU film surface；
4) is stretched, stretching ratio 2~10, draft temperature 280 using PE materials or PET material as base material using flat membrane method DEG C~300 DEG C；
5) PE films or PET film made from the TPU film and step 4) that stretch back loading chitosan layer are cut into phase by Same width presses from top to bottom TPU film (I), PE films or the PET film after respectively loading chitosan ion film layer and load TPU film (II's) after chitosan ion film layer is ranked sequentially, and commonly through rubber-heating roll press, carries out in hot state One wheel hot-stretch, then passes through metal cooling roller and cools down, and laminated film is made in the winding of tension force winder.
Further, it repeats with distilled water flushing and the step of dried up with nitrogen stream in step 3), TPU film area load Chitosan laminated film layer thickness be 0.02~0.1 μm.
Further, when chitosan is dissolved in step 2), be added adhesive, the addition of adhesive is no more than chitosan The 20% of amount.
Further, the TPU film described in step 5) (I), PE films or PET film and TPU film (II) are carrying out Before pressing, all pass through 160 DEG C~180 DEG C preheatings.
Further, in step 5), control rubber-heating roll temperature is 150 DEG C~160 DEG C, 1~2 m/min of rotating speed.
Further, the TPU film described in step 5) (I) is polyether-type TPU film, hardness 80A~90A, thickness 0.10~0.30mm；TPU film (II) be polyester-type or polyether-type TPU film, hardness be 75A~85A, thickness be 0.10~ 0.20mm。
Further, to described in step 5) TPU film (I), PE films or PET film and TPU film (II) carry out Carry out eliminating the pretreatment of stress before pressing.
Compared with prior art, the beneficial effects of the present invention are:
1. with good anti scuffing, Corrosion Protection；
2. having excellent thermal conductivity, heat can be quickly exported, hot-spot phenomenon is avoided, influences laminated film and inside The reliability and service life of component are protected especially suitable for high temperature or heating position anti scuffing；
3. meeting the high intensity of film, high temperature resistant, good, the corrosion resistant comprehensive performance of the transparency；
4. with excellent waterproof, anti-performance, while there is antibiotic and sterilizing, the comprehensive function nourished is moistened；
5. it is simple in structure, it is easy to make, there is the higher ratio of performance to price.
Specific implementation mode
To describe the technical solutions in the embodiments of the present invention more clearly, below in conjunction with embodiment to the reality of the present invention The scheme of applying is described in detail, it will be appreciated by those skilled in the art that the following example is merely to illustrate the present invention, without It should be regarded as limiting the scope of the invention
Embodiment 1
Prepared by the laminated film of the present embodiment, include the following steps：
1), by polyether-type TPU film base-material and polyester-type TPU film base-material, is stretched at 290 DEG C using periosteum method, is drawn It is 12 to stretch multiplying power, and polyether-type TPU film hardness 80A, thickness 0.20mm, polyester-type TPU film base-material hardness is 85A, and thickness is 0.15mm。
2) dissolves chitosan, and adhesive is added, and the addition of adhesive is 15% equivalent of chitosan amount.And Ultrasonic disperse 25min under the conditions of 50 DEG C；
3) by after stretching polyether-type TPU film and polyester-type TPU film be dipped into chitosan salt aqueous solution that (shell is poly- A concentration of 0.08mmol/L of sugar), it takes out after 35min, surface, is dried up with nitrogen stream later wash with distilled water, is then put again It sets and impregnates 40min in the acetone soln of Fluorenone pyridine, chitosan of the taking-up distilled water flushing up to TPU film area load Laminated film layer thickness is 0.05 μm and is then dried up with nitrogen stream, i.e., in polyether-type TPU film and polyester-type TPU film surface shape At one layer of loading chitosan ion film layer；
4) is stretched, stretching ratio 8 using PET material as base material using flat membrane method, and draft temperature is 290 DEG C；
5) preheats polyether-type TPU film, polyester-type TPU film and PET film by 165 DEG C, and carries out elimination stress Pretreatment.
6) it is 155 DEG C DEG C that, which controls rubber-heating roll temperature, 1.2 ms/min of rotating speed.
7) will be stretched made from polyether-type TPU film and polyester-type TPU film and the step 4) of back loading chitosan layer PET film cuts into width 300mm, by from top to bottom be respectively loading chitosan ion film layer after polyether-type TPU film, Polyester-type TPU film after PET film and loading chitosan ion film layer is ranked sequentially, commonly through rubber-heating roll-in It closes, carries out a wheel hot-stretch in hot state, then pass through metal cooling roller and cool down, the winding of tension force winder is made multiple Close film.
Embodiment 2
Prepared by the laminated film of the present embodiment, include the following steps：
1), by polyether-type TPU film base-material and polyester-type TPU film base-material, is stretched at 290 DEG C using periosteum method, is drawn It is 12 to stretch multiplying power, and polyether-type TPU film hardness 80A, thickness 0.20mm, polyester-type TPU film base-material hardness is 85A, and thickness is 0.15mm。
2) dissolves chitosan, and adhesive is added, and the addition of adhesive is 15% equivalent of chitosan amount.And Ultrasonic disperse 25min under the conditions of 50 DEG C；
3) by after stretching polyether-type TPU film and polyester-type TPU film be dipped into chitosan salt aqueous solution that (shell is poly- A concentration of 0.08mmol/L of sugar), it takes out after 35min, surface, is dried up with nitrogen stream later wash with distilled water, is then put again It sets and impregnates 40min in the acetone soln of Fluorenone pyridine, chitosan of the taking-up distilled water flushing up to TPU film area load Laminated film layer thickness is 0.05 μm and is then dried up with nitrogen stream, i.e., in polyether-type TPU film and polyester-type TPU film surface shape At one layer of loading chitosan ion film layer；
4) is stretched, stretching ratio 8 using PE materials as base material using flat membrane method, and draft temperature is 290 DEG C；
5) preheats polyether-type TPU film, polyester-type TPU film and PE films by 170 DEG C, and carries out elimination stress Pretreatment.
6) it is 155 DEG C that, which controls rubber-heating roll temperature, 1.5 ms/min of rotating speed.
7) will be stretched made from polyether-type TPU film and polyester-type TPU film and the step 4) of back loading chitosan layer PET film cuts into width 300mm, by from top to bottom be respectively loading chitosan ion film layer after polyether-type TPU film, Polyester-type TPU film after PET film and loading chitosan ion film layer is ranked sequentially, commonly through rubber-heating roll-in It closes, carries out a wheel hot-stretch in hot state, then pass through metal cooling roller and cool down, this is made in the winding of tension force winder The laminated film of invention.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.

Claims (7)

1. a kind of preparation method of laminated film, which is characterized in that include the following steps：
1) the periosteum method of .TPU films stretches, and stretching ratio is 9~16, and draft temperature is 280 DEG C~300 DEG C；
2) dissolves chitosan, and 20~30min of ultrasonic disperse under the conditions of at 40~60 DEG C；
3) TPU film after stretching is dipped into chitosan salt aqueous solution by, is taken out after 25~45min, wash with distilled water table Face is dried up with nitrogen stream later, is then placed on 25~45min of immersion in the acetone soln of Fluorenone pyridine, taking-up distillation again Water is rinsed and is dried up with nitrogen stream, i.e., forms one layer of loading chitosan ion film layer on TPU film surface；
4) is using PE materials or PET material as base material, is stretched using flat membrane method, stretching ratio 2~10, and draft temperature is 280 DEG C~ 300℃；
5) PE films or PET film made from the TPU film and step 4) that stretch back loading chitosan layer are cut into identical width by Degree, presses from top to bottom TPU film (I), PE films or PET film after respectively loading chitosan ion film layer and load shell is poly- TPU film (II's) after sugared ion film layer is ranked sequentially, and commonly through rubber-heating roll press, carries out a wheel in hot state Hot-stretch, then passes through metal cooling roller and cools down, and laminated film is made in the winding of tension force winder.
2. a kind of preparation method of laminated film according to claim 1, it is characterised in that：Repeat the middle distillation of step 3) The chitosan laminated film layer thickness of the step of water is rinsed and dried up with nitrogen stream, TPU film area load is 0.02~0.1 μ m。
3. a kind of preparation method of laminated film according to claim 1, it is characterised in that：It is in step 2) that chitosan is molten Xie Shi, is added adhesive, and the addition of adhesive is no more than the 20% of chitosan amount.
4. a kind of preparation method of laminated film according to claim 1, it is characterised in that：TPU described in step 5) Film (I), PE films or PET film and TPU film (II) all pass through 160 DEG C~180 DEG C preheatings before being pressed.
5. a kind of preparation method of laminated film according to claim 1, it is characterised in that：In step 5), rubber is controlled Heating roller temperature is 150 DEG C~160 DEG C, 1~2 m/min of rotating speed.
6. a kind of preparation method of laminated film according to claim 1, it is characterised in that：TPU described in step 5) Film (I) is polyether-type TPU film, hardness 80A~90A, 0.10~0.30mm of thickness；TPU film (II) is polyester-type or gathers Ether type TPU film, hardness are 75A~85A, and thickness is 0.10~0.20mm.
7. a kind of preparation method of laminated film according to claim 1, it is characterised in that：To described in step 5) TPU film (I), PE films or PET film and TPU film (II) carry out eliminating the pretreatment of stress before being pressed.
CN201810533835.1A 2018-05-29 2018-05-29 A kind of preparation method of laminated film Pending CN108705838A (en)

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CN103877605A (en) * 2012-12-20 2014-06-25 青岛同冠王实业有限公司 Production method of non-woven fabric for wound dressing
CN103879098A (en) * 2012-12-20 2014-06-25 青岛同冠王实业有限公司 Production method for composite fabric with inflammation eliminating function
CN105078651A (en) * 2015-08-14 2015-11-25 上海典范医疗科技有限公司 Multifunctional wet medical wound dressing and preparation method thereof
CN105921179A (en) * 2016-04-29 2016-09-07 宁波大学 Palladium-supporting multilayer composite film and preparation method thereof
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