CN203094748U - Anti-static moistureproof aluminum foil thin film and packaging bag - Google Patents

Abstract

The utility model discloses an anti-static moistureproof aluminum foil thin film and a packaging bag. The anti-static moistureproof aluminum foil thin film and the packaging bag comprise a main body outer layer covered on the outer side of the main body layer and an anti-static inner layer covered on the inner side of the main body layer. The anti-static moistureproof aluminum foil thin film and the packaging bag are characterized in that the main body layer comprises multiple layers of composite structures, the composite structures comprise metal layers and stretchproof layers and strengthened layers, the stretchproof layers and the strengthened layers cover two sides of the metal layers. The anti-static moistureproof aluminum foil thin film and the packaging bag made from the anti-static moistureproof aluminum foil thin film have the advantages that a good antistatic function is possessed, and heat seal ability and separating shielding properties are greatly improved.

Description

Moistureproof aluminum foil film of electrostatic prevention and packaging bag

Technical field

The packaging bag that the utility model relates to the moistureproof aluminum foil film of a kind of electrostatic prevention and makes.

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 product, the chance that causes producing static heightens.As walking about, air flows is carried grade and can both be produced static in the daily life.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.A. static is to the influence of electronic building brick: 1. electrostatic adherence dust, change the impedance between circuit, and influence 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 B, electrostatic damage: 1. disguised human body is perception static directly, unless electrostatic discharge takes place, but electrostatic 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 sensivity 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 constructional feature and time-consuming, bothersome, expensive, requirement often needs to use precision instruments such as scanning electron microscope than complicated technology, even so the damage that also is difficult to cause with other reasons of some electrostatic damage phenomenon is distinguished, people's mistake is lost efficacy electrostatic damage be used as other inefficacy, this be damage of electrostatic discharge is not fully realized before, usually be attributed to early failure or inefficacy in confused situation, thus the automatic true cause that lost efficacy of having covered.5. it seems on the seriousness ESD problem surface has only influenced the family that uses of manufactured product, but has in fact also influenced the maker of each level, as: reputation of the expense of guaranteeing, maintenance and company or the like.

At the problems referred to above, occurred by the electrostatic prevention aluminum foil film, this film comprises body layer, it is outer and be fixedly connected on the electrostatic prevention internal layer of body layer inboard to be fixedly connected on the electrostatic prevention in the body layer outside.Body layer wherein is generally three-layer composite structure, and two outside layers is respectively polyester layer, polyethylene or polypropylene layer, and interlayer is generally coated with aluminum film, independent aluminium foil or nylon layer.Because the existence of inside and outside antistatic backing, this packaging bag can prevent the infringement of static effectively, simultaneously by the setting of interlayer, 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 electrostatic prevention moisture barrier bag that above-mentioned electrostatic prevention, damp-proof membrane are made are relatively poor, and the needs of further raising are arranged.

The utility model content

Purpose: in order to overcome the deficiencies in the prior art, the utility model provides a kind of electrostatic prevention moistureproof aluminum foil film, to improve its heat sealability and shielding performance.

Technical scheme: for solving the problems of the technologies described above, the technical solution adopted in the utility model is:

The moistureproof aluminum foil film of electrostatic prevention, comprise body layer, be covered in the electrostatic prevention skin (esd) in the described body layer outside and be covered in the electrostatic prevention internal layer (esd) of body layer inboard, it is characterized in that: described body layer comprises multi-layer compound structure, stretch-proof layer and strengthening layer that it comprises metal level and is covered in described metal level both sides.

Preferably, the material of described stretch-proof layer is the biaxial tension cast polypropylene.

Preferably, the material of described metal level is an aluminium foil.

Preferably, described strengthening layer is composited by nylon and/or polyethylene, the BON biaxially oriented nylon film (BOPA) of described nylon layer for strengthening, the metallocene PE (M-LLDPE) of polyethylene wherein for strengthening.

The utility model further discloses the electrostatic prevention damp proof packing bag that the moistureproof aluminum foil film of described electrostatic prevention is made.

The material that the moistureproof aluminum foil film of electrostatic prevention of the present utility model is commonly used with industry: BOPP(biaxial tension cast polypropylene), aluminium foil, BOPA(BON biaxially oriented nylon film), compositions such as metallocene PE and antistatic backing have the film of multiple-structure.It has possessed good tensile, heat-resisting, cold-resistant, water preventing ability, gas barrier property, photophobism, guarantor's flavor property, gas barrier, chemical inertness, and safe and sanitary; It is the good material of making food pack and electronic package pack.Especially utilized BOPP, its anti-soak properties are especially outstanding.

Description of drawings

Fig. 1 is the structural representation of most preferred embodiment of the present utility model.

Among the figure: electrostatic prevention skin 1, biaxial tension cast polypropylene 21, metal level 22, reinforcement nylon layer 23, reinforcement polyethylene layer 24, electrostatic prevention internal layer 3.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is done further explanation.

As shown in Figure 1, the moistureproof aluminum foil film of a kind of electrostatic prevention comprises electrostatic prevention skin 1, biaxial tension cast polypropylene 21, metal level 22, reinforcement nylon layer 23, reinforcement polyethylene layer 24, electrostatic prevention internal layer 3.

Wherein, biaxial tension cast polypropylene layer 21 is the stretch-proof layer, strengthens nylon layer 23, strengthens polyethylene layer 24 composition strengthening layers 2; Metal level 22, stretch-proof layer and the strengthening layer 2 common body layers of forming.Certainly, use plain polypropylene and nylon, polyethylene or other metallic films (Copper Foil, tinfoil paper etc.) to replace above-mentioned material, also can obtain identical effect, but various slightly inferior properties.

The utility model has utilized the common material of following industry to constitute above all layers, and the characteristics of each material are:

One, BOPP(biaxial tension cast polypropylene):

1. the pulling strengrth height of BOPP, 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 resistance to cold height, it is heatproof in the applicable plastic that serviceability temperature can reach 120 ℃, the BOPP resistance to cold is also than general PP film height.

3. ratio of refraction increases, and surface gloss improves, and the transparency is good, and is suitable to various packing.

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

5. chemical inertness is good, removes strong acid such as fuming sulfuric acid, and nitric acid has outside the corrosion attack 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 packing,, also be used for doing holder, decorative film after the printing as the complex film base material.

Two, AL(aluminium foil):

Aluminium foil is a metallic paper class unique in the flexible packing material, has the very long application time on the packing, aluminium foil is a metallic material, and it blocks water, choke, lucifuge, guarantor's flavor property are that other any packing are difficult to be equal to, and is the packing 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, drug packaging;

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 reflex-reflective 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.

Three, BOPA(BON biaxially oriented nylon film):

BON biaxially oriented nylon film (BOPA) is the important materials of producing various compound package materials.The BOPA film has higher intensity than PE, BOPP film, is food fresh keeping, the ideal material of protecting perfume.Have following characteristic:

1. the good transparency and glossiness, mist degree is low, and wholesomeness is suitable for packaging for foodstuff well;

2. You Yi obdurability, tensile strength, peel strength, impact strength, resistanee to rupture and paracentesis resistance;

3. fabulous gas (oxygen, nitrogen, carbon dioxide), fragrance and smell barrier;

4. You Yi fuel resistance, grease resistance and chemical solvent resistance;

5. be convenient to processing, can apply, metalized, or compound etc. with other base materials;

6. be fit to range of temperatures extensively (--60 ℃～150 ℃), 225 ℃ of fusing points.

7. resistance to effect of heat is strong.

Four, M-LLDPE(metallocene PE):

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; Friction coefficient is little, is fit to packing fast, and opening is good;

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

3. certain tensile strength and peel strength are arranged, and elasticity 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 product, and the additive capacity of adding also seldom it is generally acknowledged that vinyon is a kind of packing of non-toxic and safe health, direct 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 material, in composite material, 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, stretch ratio is a times of common polythene stretch ratio, strength under shock and tensile strength are all than conventional polyethylene 50%--60% eager to excel in whatever one does simultaneously;

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

The above only is a preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (4)

1. the moistureproof aluminum foil film of electrostatic prevention, comprise body layer, to be covered in the electrostatic prevention in the described body layer outside outer and be covered in the electrostatic prevention internal layer of body layer inboard, it is characterized in that: described body layer comprises multi-layer compound structure, stretch-proof layer and strengthening layer that it comprises metal level and is covered in described metal level both sides.

2. the moistureproof aluminum foil film of electrostatic prevention according to claim 1, it is characterized in that: the material of described stretch-proof layer is the biaxial tension cast polypropylene.

3. the moistureproof aluminum foil film of electrostatic prevention according to claim 1, it is characterized in that: the material of described metal level is an aluminium foil.

4. electrostatic prevention damp proof packing bag is characterized in that: it is to be made by the moistureproof aluminum foil film of one of them described electrostatic prevention of claim 1 to 3.

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