CN203093202U - Anti-static separated moistureproof film - Google Patents

Abstract

The utility model relates to an anti-static separated moistureproof film. The anti-static separated moistureproof film comprises a main body layer, an anti-static outer layer fixedly connected with the outer side of the main body layer, and an anti-static inner layer fixedly connected with the inner side of the main body layer, wherein the main body layer is of a five-layer composite structure, namely, a polypropylene layer, a metal layer, a separated layer, a polyester layer and a polyethylene layer from outside to inside. Compared with the prior art, the anti-static separated moistureproof film provided by the utility model has the beneficial effects that the heat sealability and the barrier property are improved, and the anti-static separated moistureproof film has the wide application value.

Description

Antistatic intercepts moisture-proof film

Technical field

The utility model relates to a kind of antistatic and intercept moisture-proof film.

Background technology

At present, the application of electronic product is more and more, because the precise structure complexity of electronic devices and components, in the process of circulation and use, be subjected to the infringement of static and water vapour molecule easily, the lighter makes electrical quantity drift, the lost of life of electronic component, and weight person makes components and parts entirely ineffective.

The circuit of ic component dwindles, withstand voltage reduction, the circuit area reduces, and makes the weakening of the anti-electrostatic impact ability of device, and static electric field (Static Electric Field) and electrostatic induced current (ESDcurrent) become the fatal killer of these high density components and parts.The widespread usage of simultaneously a large amount of contour insulating materials of plastic products, the chance that causes producing static heightens.As walking about, air flows in the daily life, and carrying waits can both produce static.People it is generally acknowledged the Xin Pian Before that has only the CMOS class to electrostatic sensitive, and in fact, the components and parts circuit that integrated level is high is all very sensitive.

Static changes the impedance between circuit to the 1. Electrostatic Absorption dusts that influence of electronic building brick, influences the function and the life-span of product.2. destroy the insulation or the conductor of assembly because of electric field or electric current, make assembly can not work (destroying fully).3. because of the electric field of moment or the heat of electric current generation, assembly is injured, endure, and the life-span is impaired.

The characteristics of electrostatic damage: 1. disguised human body is perception static directly, unless static discharge takes place, but static discharge takes place, human body also differs the sensation of electric shock surely.This is because the static discharge voltage of human perception is 2-3KV.2. some electronic devices and components of latency are subjected to that performance does not significantly descend behind the electrostatic damage, but the discharge meeting that repeatedly adds up causes internal injury and form hidden danger to device, and have increased the sensitiveness of device to static.The problem that has produced there is no any method and can cure.Can 3. the randomness electronic building brick be subjected to electrostatic breakdown in what situations? so to say that after the assembly production until its damage before all processes all be subjected to the threat of static, and the generation of these static also has randomness.Because the generation of static and discharge all are to take place moment, and difficult prediction and protection.4. the complexity electrostatic discharge damage divides plate work, meticulous because of electronic product, small design feature and time-consuming, bothersome, expensive, requirement often needs to use precision instruments such as ESEM than complicated technology, even so the damage that also is difficult to cause with other reasons of some electrostatic damage phenomenon is distinguished, and makes people's mistake quiet

Electric injury lost efficacy and to be used as other inefficacy, this be damage of electrostatic discharge is not fully realized before, usually be attributed to initial failure or inefficacy in confused situation, thus the automatic true cause that lost efficacy of having covered. [0007]5. it seems on the seriousness ESD problem surface has only influenced the family that uses of manufactured goods, but has in fact also influenced the manufacturer of each level, as: reputation of the expense of guaranteeing, maintenance and company or the like.

At the problems referred to above, the antistatic moisture barrier bag made by antistatic film has appearred, and this film comprises body layer, it is outer and be fixedly connected on the antistatic internal layer of body layer inboard to be fixedly connected on the antistatic in the body layer outside.Body layer wherein is generally three-layer composite structure, and two outside layers is respectively biaxial tension cast polypropylene layer, metal level, and the 3rd layer is PE reinforcement polyethylene layer.Because the existence of inside and outside antistatic backing, this packaging bag can prevent the infringement of static effectively, simultaneously by the setting in intermediate layer, has the function of protection against the tide or lucifuge or obstruct, thereby has obtained widespread usage.Yet the heat sealability and the barrier of the antistatic moisture barrier bag that above-mentioned antistatic damp-proof membrane is made are relatively poor, and the needs of further raising are arranged.

The utility model content

At the deficiency that exists on the prior art, the utility model provides a kind of antistatic of new structure to intercept moisture-proof film.

To achieve these goals, the utility model is to realize by the following technical solutions:

A kind of antistatic intercepts moisture-proof film, comprising body layer and being fixedly connected on the antistatic in the body layer outside described body layer of antistatic internal layer outer and that be fixedly connected on the body layer inboard is 5 layers of composite construction, is followed successively by polypropylene layer, metal level, barrier layer, polyester layer, polyethylene layer from outside to inside.

As preferred version, above-mentioned polypropylene layer is a biaxial tension cast polypropylene layer.

As preferred version, above-mentioned metal level is an aluminium foil.

As preferred version, above-mentioned polyethylene layer is for strengthening polyethylene layer.

The effect that the utility model is compared with prior art useful is: the antistatic of the utility model in compared to existing technology intercepts moisture-proof film, significantly improved its heat sealability and barrier property, is with a wide range of applications.

Description of drawings

Describe the utility model in detail below in conjunction with the drawings and specific embodiments; Fig. 1 is a structural representation of the present utility model.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the utility model.

As shown in Figure 1, a kind of antistatic intercepts moisture-proof film, the antistatic outer 1 and the antistatic internal layer 7 that is fixedly connected on the body layer inboard that comprise body layer and be fixedly connected on the body layer outside, described body layer is 5 layers of composite construction, is followed successively by polypropylene layer 2, metal level 3, barrier layer 4, polyester layer 5, polyethylene layer 6 from outside to inside.

As preferred version, above-mentioned polypropylene layer 2 is biaxial tension cast polypropylene layer.

As preferred version, above-mentioned metal level 3 is an aluminium foil.

As preferred version, above-mentioned polyethylene layer 6 is for strengthening polyethylene layer.

The effect of biaxial tension cast polypropylene layer:

1. the hot strength height of biaxial tension cast polypropylene layer, elasticity membranogen height, but tear strength is low, and the BOPP rigidity is good.Outstanding extension antagonism flexural fatigue performance is arranged, collapsible millions of times.

2. heat-resisting, the cold resistance height, it is heatproof in the applicable plastic that serviceability temperature can reach 120 ℃, BOPP cold resistance is also than general PP film height.

3. refractive index increases, and surface gloss improves, and the transparency is good, and is suitable to various packaging material.

4. density is little, and about 0.91, wholesomeness is good, and is nontoxic, tasteless, and nothing is smelt.

5. chemical stability is good, removes strong acid such as oleum, and nitric acid has outside the corrosiveness it, is insoluble to other solvents, and a part hydro carbons is not allowed the effect of expanding to it.

6. water preventing ability is splendid is that resistance is wet, one of moistureproof optimal material, and water absorption rate is less than 0.01%.

7. electrical insulating property is good, and high-frequency insulation is good.

8. be mainly used in packaging material,, also be used for doing holder, decorating film after the printing as the composite membrane base material.

Aluminium foil:

Aluminium foil is a metal forming class unique in the flexible packing material, has the very long application time on the packing, aluminium foil is a metal material, and it blocks water, choke, lucifuge, guarantor's flavor property are that other any packaging material are difficult to be equal to, and is the packaging material that still can not substitute fully so far.Aluminium foil is the electrolytic aluminium that adopts 99.0%～99.97% purity, and is prepared through repeatedly rolling, aboundresources, and performance has suitable advantage.

Characteristic:

1. aluminium foil has glittering metallic luster, and is ornamental strong;

Aluminium foil nontoxic, tasteless, do not have and to smell, be fit to various food, electronics, medicine packing;

3. relative weight is light, and proportion only is 1/3rd of iron, copper etc., rich extensibility, and thin thickness, weight per unit area is little;

4. light-proofness is good, and reflecting rate can reach 95%, is usually used in reflectorized material;

5. protectiveness is strong, makes packing material not be subject to the infringement of bacterium, fungi and insect;

6. high temperature and low-temperature condition are stable, and temperature exists--not harmomegathus distortion in the time of 73 ℃～371 ℃;

7. barrier is fabulous, and moistureproof, airtight, guarantor's perfume can prevent that the moisture absorption, oxidation and the volatilization of packing content thing is rotten;

8. aluminium foil is easy to processing, can be compound with various plastic sheetings and paper etc.

Polyester layer:

The polyester layer film is that PET resin T mould is extruded after biaxial tension is obtained.Has good performance.

1. mechanical performance:

The tensile strength of polyester layer film is the highest a kind of in all plastic sheetings, and product as thin as a wafer just can be satisfied the demand, and rigidity is strong, hardness is high, wear-resisting, folding and dimensionally stable, and density is that 1.3～1.38 fusing points are 255～265 ℃.

2. cold-resistant hear resistance:

The temperature range that polyester layer film film is suitable for reaches--and 30 ℃～150 ℃, in wider temperature range, keep excellent physical and mechanical properties, be fit to most packings of product.

3. barrier:

Good integrated water stop, gas barrier properties, its water preventing ability is similar to PE.Air transmission coefficient is minimum.Barrier to air, smell is high, is to protect one of fragrant material.

4. chemical resistance:

Grease resistance, anti-most of solvents, anti-diluted acid, diluted alkaline.

5. electric property

Insulating properties height, dielectric strength, volume resistance height are often done the insulating materials of capacitor etc.

Other:

The polyester layer film is placed on the skin of material structure, is because after this layer handle through surface corona, if customer requirement printing service, printing ink can be very firm attached on this layer, difficult drop-off.

Polyethylene layer:

1. gas barrier, moisture barrier property is good, and its moisture permeable coefficient is minimum in packing plastics commonly used, but has certain air permeability; Coefficient of friction is little, is fit to packing fast, and opening is good;

2. chemical stability is good, and normal temperature does not dissolve in organic solvent in generally selecting soda acid inoperative;

3. certain tensile strength and tearing strength are arranged, and pliability is good, is fit to high-speed automated operation;

4. resistant of high or low temperature, resistance to low temperature good (70 ℃) can adapt to food refrigerated, freezing needs, but because of its fusing point is low, resistance to elevated temperatures is poor, and can not be with food high temperature (about 250 ℃) boiling;

5. wholesomeness, itself has low toxicity monomer ethylene, but residual element is atomic in plastic products, and the additive capacity of adding also seldom it is generally acknowledged that vinyon is a kind of packaging material of non-toxic and safe health, directly contact food;

6. anti-closing property, optical.Have good especially heat bonding or heat sealing performance, so its film is commonly used for the heat-sealing internal layer of composite, in composite, mainly play the effect that vacuumizes and seal, 95 ℃ of melt temperatures;

7. the resistance tocrocking of metallocene PE is Duoed one times than conventional polyethylene; Owing to added metal ingredient, make the barrier of this film strengthen, percentage elongation is a times of common polythene percentage elongation, impact strength and tensile strength are all than conventional polyethylene 50%--60% eager to excel in whatever one does simultaneously;

8. processing and forming.Processing and forming is convenient, need not add plasticizer, and can adapt to and extrude, injection moulding, various forming methods such as blowing, simple to operate.

More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (4)

1. an antistatic intercepts moisture-proof film, the antistatic skin and the antistatic internal layer that is fixedly connected on the body layer inboard that comprise body layer and be fixedly connected on the body layer outside, it is characterized in that: described body layer is 5 layers of composite construction, is followed successively by polypropylene layer, metal level, barrier layer, polyester layer, polyethylene layer from outside to inside.

2. antistatic according to claim 1 intercepts moisture-proof film, and it is characterized in that: described polypropylene layer is a biaxial tension cast polypropylene layer.

3. antistatic according to claim 1 intercepts moisture-proof film, and it is characterized in that: described metal level is an aluminium foil.

4. antistatic according to claim 1 intercepts moisture-proof film, it is characterized in that: described polyethylene layer is for strengthening polyethylene layer.