CN102448279A - Sheet material used by electronic grade anti-static shielding bag and manufacturing method thereof - Google Patents
Sheet material used by electronic grade anti-static shielding bag and manufacturing method thereof Download PDFInfo
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- CN102448279A CN102448279A CN2011102707530A CN201110270753A CN102448279A CN 102448279 A CN102448279 A CN 102448279A CN 2011102707530 A CN2011102707530 A CN 2011102707530A CN 201110270753 A CN201110270753 A CN 201110270753A CN 102448279 A CN102448279 A CN 102448279A
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Abstract
The invention, which belongs to the electronic product wrappage technology field, relates to a sheet material used by an electronic grade anti-static shielding bag and a manufacturing method thereof. The sheet material comprises: a first substrate layer, a second substrate layer, a core layer, a first antistatic layer and a second antistatic layer. The core layer is arranged between the first substrate layer and the second substrate layer; the first antistatic layer is combined at a side surface of the first substrate layer; and the second antistatic layer is combined at a side surface of the second substrate layer. The sheet material is characterized in that: the first antistatic layer and the second antistatic layer are antistatic films; an adhesive layer is added between the core layer and the second substrate layer; the second substrate layer includes a first thin film layer, a second thin film layer, and a third thin film layer; the second thin film layer is arranged between the first thin film layer and the third thin film layer; the first thin film layer is combined with the adhesive layer; the second antistatic layer is combined at a side surface of the third thin film layer; and the second thin film layer and the third thin film layer contain antistatic master batches. Advantages of the invention are as follows: an antistatic index can reach 107 to 109 omegas and an antistatic period can reach over 18 months; besides, the manufacturing process is simple and can be applied to industrialized amplification production; and embodiment of a technical effect of the sheet material can be guaranteed.
Description
Technical field
The invention belongs to electronic product packing material technical field, be specifically related to a kind of electron level anti-static shielding bag and use sheet material, and relate to the manufacture method of this sheet material.
Background technology
The anti-static shielding bag is widely used in electronic semi-conductor's industry, fiberoptics device manufacturing, telecommunications and radio communication, pharmaceutical sector, automobile manufacture industry etc., and avoid sensitive electronic components inside and surface to discharge because of static and Electromagnetic Interference etc. endangered.
Undoubtedly; The anti-static shielding bag is made by the antistatic sheet material; Be included in the structure of sheet material of the anti-static shielding bag usefulness of market circulation in the prior art; As shown in Figure 2; Second substrate layer 2 that comprises first substrate layer 1 filled the post of by polyester or nylon film, fills the post of by polyethylene or polypropylene film, by central core 3, first antistatic backing 4 and second antistatic backing 5 of PET substrate surface coating silica or aluminium; Central core 3 is at first, second substrate layer 1, between 2, and first antistatic backing 4 is combined in the surface back to a side of said central core 3 of first substrate layer 1, and second antistatic backing 5 is combined in the surface of second substrate layer 2 back to a side of central core 3.This sheet material light transmittance reaches 40-70%, and antistatic index is 10
9-10
11Ω can give the corresponding physical protection of electronic device and the environmental protection of pack.
First, second antistatic backing 4,5 of above-mentioned structure shown in Figure 2 is essentially the electrostatic dissipation layer, and above-mentioned first substrate layer 1 is essentially anti-static polyester film or the Antistatic Nylon film with electrostatic-proof function.In the prior art; Often adopt following two kinds of technological means to make first substrate layer 1 have electrostatic-proof function; The one, when film forming, in polyester or nylon material, add the antistatic masterbatch; Utilize the principle of molecular motion, the airborne hydrone of surface adsorption that the molecule with antistatic usefulness can be moved to film gradually forms the conduction moisture film to reach the purpose of the static that disappears.Present antistatic masterbatch generally all is to process according to certain ratio is mixing with glycerolipid, ethoxy fatty amine or alkanolamide and resins such as polyethylene or polypropylene.Though such antistatic masterbatch is easy to use; But their antistatic has only 3-6 month effective time; Serviceability temperature is less than 60 degrees centigrade, and humidity is 40%-60%, so strict time that receives, the influence of temperature and humidity; And the effect of antistatic can not reach gratifying degree, promptly can't reach 10
9-10
11The requirement of Ω.The 2nd, at the surface coated antistatic liquid of polyester film or nylon film; Antistatic liquid is the alcoholic solution of glycerolipid, ethoxy fatty amine or alkanolamide; This antistatic liquid has certain stimulation harm to operator's respiratory tract; And with high costs, heat sealability, the opening effect of plastics all had adverse influence.Especially coating layer with cannot say for sure card as the reliability effect of the surface combination of the polyester film of matrix (carrier) or nylon film, and the antistatic grade also only can reach 10
9-10
11Ω.
The translucent antistatic damp-prrof packing bag that Granted publication CN 201209043Y introduces; It is the double-deck central core that constitutes by outer surface electrostatic dissipation layer, polyester or nylon layer, silica coating and aluminium coat; 5 layers of lamination layer structure that polyethylene or polypropylene layer and inner surface electrostatic dissipation layer constitute; Have good transparent and moisture effect, light transmittance 40--70%, moist steam transmissivity (MVTR) is the 0.02g/100 square inch.
The anti-static shielding combined package bag that Granted publication CN 2589355Y is public all; The sheet material of this packaging bag is the laminated film of four-layer structure, and this laminated film is followed successively by from inside to outside: hot sealing layer, be combined in a side surface of hot sealing layer thin metal layer, be combined in the insulating barrier on the thin metal layer and cover the laminated polyester film on the insulating barrier.Wherein: hot sealing layer is the film that contains polyethylene and un-stretched polypropylene, and in this film, contains antistatic agent; Thin metal layer is that thickness 10 μ m and sheet resistance are 10
3--10
5The aluminium oxide thin layer of Ω; Insulating barrier is sheet resistance>=10
12The PE adhesive layer of Ω; The sheet resistance of laminated polyester film is 10
8-10
9Ω.The sheet resistance of the laminated film of this structure is not enough to reach gratifying degree, is difficult to be applicable to the packing to high-precision microelectronic element.
The anti-static shielding slice material and the processing method of the more typical sandwich construction of introducing like patent of invention publication number CN101267706A; The anti-static shielding slice material of this patent application is to be made up of antistatic backing and screen each interval, and between antistatic backing and screen, the filling bed of being filled the post of by PP polypropylene, ABS acrylonitrile-butadiene-styrene copolymer, glycol-modified PETG, polyester, Merlon, polystyrene or polyethylene is set.Antistatic backing is for adding antistatic material, antistatic material such as carbon black, graphite, metal dust, wire, permanently antistatic agent IDP (electrically conductive polyaniline) and permanent conductive agent ICP or the like in common plastics; Screen is to add carbon black graphite powder, fiber, metal dust and IDP or the like in the common plastics, constitutes conductive plastic film.The processing method of this patent application is released bright for the 5th page the 3rd section by its specification.
The translucent antistatic damp-prrof packing bag that above-mentioned CN 201209043Y is related; Do not belong to the described electron level anti-static shielding of applicant packaging bag category in the above; But transparent moistureproof polybag with certain effect. mainly embody visually and anti-, moistureproof electrostatic efficiency is not described.Though above-mentioned CN 2589355Y and CN101267706A have the effect of antistatic and shielding, working condition is harsh, complex process and cost is too high and human body is had certain harm during operation.
Be not limited to disclosed anti-static shielding packaging bag of above-mentioned patent documentation or sheet material and have following logical fraud: the one, be difficult to reach the antistatic index requirement of sensor to packing material; The 2nd, the persistence of anti-static effect is poor, and it is of short duration promptly to hold time, only about 6 months; The 3rd, during operation health there is certain influence; The 4th, the pairs of openings weak effect for example has the tangible pressure-vaccum marking, influences attractive in appearance.
To all deficiencies of above-mentioned prior art, the applicant has carried out long-term concern and positive trial, and the technical scheme that will introduce below produces under this background.
Summary of the invention
Top priority of the present invention provides and a kind ofly helps to improve the antistatic index, helps prolonging the antistatic time and be of value to and avoid in process of production operator's healthy having a negative impact used the electron level anti-static shielding bag that embodies environmental protection and used sheet material.
Another task of the present invention is to provide the manufacture method of a kind of electron level anti-static shielding bag with sheet material, and this method technology is terse and not harsh, and can ensure the comprehensive embodiment of said electron level anti-static shielding bag with the technique effect of sheet material.
Top priority of the present invention is accomplished like this; A kind of electron level anti-static shielding bag is used sheet material; Comprise first, second substrate layer, central core, first antistatic backing and second antistatic backing; Central core is between first, second substrate layer; First antistatic backing is combined in the surface of first substrate layer back to a side of said central core, and second antistatic backing is combined in the surface of second substrate layer back to a side of said central core, is characterised in that: described first antistatic backing and described second antistatic backing are antistatic and film; Between described central core and described second substrate layer, have additional adhesive layer; And described second substrate layer comprises first, second thin layer and the 3rd thin layer, and second thin layer is between the first, the 3rd thin layer, and the first film layer combines with described adhesive layer; Described second antistatic backing is combined in the surface of the 3rd thin layer back to a side of said second thin layer, and wherein: described second, third thin layer contains the antistatic masterbatch.
In a concrete embodiment of the present invention; The thickness of described substrate layer is 0.012-0.025mm; The thickness of described second substrate layer is 0.04-0.07mm; The thickness of described central core is 0.012-0.015mm, and the grammes per square metre of described first, second antistatic backing is 0.021-0.035g/m
2, and the thickness of described adhesive layer is 0.01-0.018mm, and wherein: the thickness of described the first film layer is 0.01-0.0175mm, the thickness of second thin layer is 0.02-0.035mm, and the thickness of the 3rd thin layer is 0.01-0.0175mm.
In another concrete embodiment of the present invention, described first substrate layer is polyester film or nylon film.
In another concrete embodiment of the present invention, described central core is a vacuum aluminium coated layer.
In another concrete embodiment of the present invention; Described first, second thin layer and the 3rd thin layer are polyethylene film; Wherein: second thin layer and the 3rd thin layer are and contain described antistatic masterbatch, and antistatic masterbatch and poly weight ratio are 1: 8-10.
Also have among the concrete embodiment of the present invention, described antistatic is filmed to be dissolved in the distilled water by sodium alkyl sulfonate and is processed.
more of the present invention and among concrete embodiment, the weight ratio of said sodium alkyl sulfonate and distilled water is 1: 330-490.
In of the present invention and then concrete embodiment, described adhesive layer is that the two components that meet the U.S. FDA standard gather ethyl ester dry-type composite glue water.
Of the present invention again more and among concrete embodiment, the thickness of described vacuum aluminium coated layer is 2.4 * 10
-5-0.4 * 10
-3Mm, light transmittance are 65-75%.
Of the present invention also have a task to accomplish like this, and a kind of electron level anti-static shielding bag may further comprise the steps with the manufacture method of sheet material:
A) preparation antistatic coating liquid, with sodium alkyl sulfonate and distilled water by weight than being 1: the ratio of 330-490 is dissolved in the airtight container, at-5～35 ℃ of held 12-72h, obtains the antistatic coating liquid, and is for use;
B) preparing centre layer is plating to a side surface of first substrate layer with vacuum aluminum-coated mode with aluminium powder, forms the central core of being filled the post of by aluminium coat at a side surface of first substrate layer, and wherein: the thickness of central core is 2.4 * 10
-5～0.4 * 10
-3Min, light transmittance are 65-75%;
C) preparation second substrate layer; With the raw material of polyethylene particle as the first film layer that constitutes second substrate layer; Will be by antistatic masterbatch and polyethylene particle by 1: the weight ratio of 8-10 be mixed the mixed material that obtained mutually as the raw material of second thin layer that constitutes second substrate layer and the raw material of the 3rd thin layer; The raw material that constitutes first, second thin layer and the raw material that constitutes the 3rd thin layer are extruded in three runners by the coextrusion die head of plastic extruder simultaneously, obtained treating compound second substrate layer of extruding;
D) compound extruding, with treating that compound second substrate layer of extruding extrudes through the high temperature extruder again, obtain first, second, third thin layer compound each other for one and thickness be second substrate layer of 0.04-0.07mm;
E) substrate layer is compound; At first; By glue spreader central core being made first substrate layer is covered with adhesive layer together with surfaces coated central core on the limit under the state of the surface-coated adhesive layer of a side of second substrate layer is 50-70 ℃ drying tunnel by way of temperature with the gait of march of 40-60m/min; Use the solvent evaporates that makes in the adhesive layer, when going out drying tunnel, make the first film layer of adhesive layer and second substrate layer on surface of central core compound, rolling; And being placed on temperature in rolling is slaking 24-48h under 50-60 ℃ the environment, obtains waiting to be coated with the coiled material of antistatic coating liquid;
F) apply the antistatic coating liquid; Waiting to be coated with under the debatching state of coiled material with 40-60m/min of antistatic coating liquid; Respectively first substrate layer is applied the antistatic coating liquid back to central core one side surface and to the 3rd thin layer of second substrate layer back to a side surface of second thin layer by a pair of applicator roll; Form first antistatic backing and form second antistatic backing at the 3rd thin layer back to a side surface of second thin layer back to a side surface of said central core at first substrate layer, the grammes per square metre of first, second antistatic backing is 0.021-0.035g/m
2, rolling obtains electron level anti-static shielding bag and uses sheet material.
Technical scheme provided by the invention is owing to adopted said structure, thereby the antistatic index can reach 10
7-10
9Ω, the antistatic cycle can reach more than 18 months; The preparation method who provides can not produce the problem to operator's physical effects, and technology is simple and can adapt to industrial amplification production, and the embodiment that can ensure the technique effect of said sheet material.
Description of drawings
Fig. 1 is the cross section enlarged diagram of embodiments of the invention structure.
Fig. 2 is the cross section enlarged diagram of the sheet material of the anti-static shielding bag usefulness in the prior art.
Embodiment
For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present invention and beneficial effect more; The applicant general elaborates with the mode of embodiment below; But the description to embodiment all is not the restriction to the present invention program, any according to the present invention design done only for pro forma but not substantial equivalent transformation all should be regarded as technical scheme category of the present invention.
Embodiment 1:
Ask for an interview Fig. 1, the sheet material that uses with the electron level anti-static shielding bag of making structure shown in Figure 1 is example:
A) preparation antistatic coating liquid; In airtight container; Will by the alkyl sulfonic acid of commercially available channel acquisition receive with distilled water by weight the ratio dissolving that is 1: 490, that is to say the alkyl sulfonic acid of 1 weight portion received to be dissolved in the distilled water of 490 weight portions, at-5～0 ℃ of held 72h; Obtain the antistatic coating liquid, for use;
B) the preparing centre layer 3, with vacuum aluminum-coated mode aluminium powder are plating to a side surface of first substrate layer 1, and obtaining a side surface at first substrate layer 1, to be formed with thickness be 2.4 * 10
-5Mm and light transmittance are 65% the central core of being filled the post of by the vacuum aluminium coat 3, and in this step, the material of first substrate layer 1 is a polyester film, and thickness is 0.025mm;
C) preparation second substrate layer 2; With the raw material of polyethylene particle as the first film layer 21 usefulness of forming (formation) second substrate layer 2; Will (masterbatch be also claimed master batch by the antistatic masterbatch; As follows) mix resulting mixed material mutually as the raw material of second thin layer 22 of forming (formations) second substrate layer 2 and as the raw material of the 3rd thin layer 23 of formation second substrate layer 2 with polyethylene particle by 1: 10 weight ratio; Send into the raw material that constitutes first, second and the 3rd thin layer 21,22,23 in the plastic extruder simultaneously; Three runners by the co-extrusion die head of plastic extruder are extruded, and obtain treating compound second substrate layer of extruding 2, and wherein: the thickness of first, second and the 3rd thin layer 21,22,23 is respectively 0.01mm, 0.02mm and 0.01mm; Promptly the thickness ratio each other of first, second, third thin layer 21,22,23 is 1: 2: 1
D) compound extruding; Will be by step C) compound second substrate layer of extruding 2 of treating that obtains introduces the high temperature extruders and extrudes once more; The temperature of extrusion die is 135～170 ℃, and obtaining by compound ideally each other that constitute for one and the thickness of first, second, third thin layer 21,22,23 is second substrate layer 2 of 0.04mm;
E) substrate layer is compound; At first; On the limit by glue spreader (upper glue roller) to by step B) central core 3 that obtains is that to make first substrate layer 1 is covered with adhesive layer 62 together with surfaces coated central core get into temperature with the gait of march of 40m/min under the state of adhesive layer 6 of 0.015mm be 70 ℃ drying tunnel towards the surface-coated thickness of a side of second substrate layer 2; So that make the solvent evaporates in the adhesive layer 6; When going out drying tunnel, make the first film layer 21 of adhesive layer 6 and second substrate layer 2 on surface of central core 3 compound, rolling; And being placed on temperature in rolling is slaking 24h under 60 ℃ the environment; Obtain waiting to be coated with the coiled material of antistatic coating liquid, two components that the adhesive layer 6 described in this step meets the U.S. FDA standard gather ethyl ester dry-type composite glue water, this glue preferred but not with being limited to use by the MHZ-3-1 type environment-friendly adhesive of the bright vast and boundless Science and Technology Ltd. in Changshu City, Jiangsu Province, China production and sales;
F) apply the antistatic coating liquid; By step e) obtain wait to be coated with under the debatching speed of coiled material with 40m/min of antistatic coating liquid; Respectively first base material 1 is applied by steps A back to the side surface (i.e. the surface of first substrate layer, 1 outward) of central core 3 and to the 3rd thin layer 23 of second substrate layer 2 side surface (i.e. the surface of the 3rd thin layer 23 outwards) back to second thin layer 22 simultaneously by a pair of roller of filming) the antistatic coating liquid that obtains; Thereby form first antistatic backing 4 and form second antistatic backing 5 at the 3rd thin layer 23 back to a side surface of second thin layer 22 back to a side surface of central core 3 at first substrate layer 1, the grammes per square metre of first, second antistatic backing 4,5 is 0.021g/m
2, obtaining the antistatic index is 10
7-10
9The electron level anti-static shielding bag that Ω and anti-static ability duration reached more than 18 months is used sheet material.
Embodiment 2:
Ask for an interview Fig. 1, the sheet material that uses with the electron level anti-static shielding bag of making structure shown in Figure 1 is example:
A) preparation antistatic coating liquid; In airtight container; Will by the alkyl sulfonic acid of commercially available channel acquisition receive with distilled water by weight the ratio dissolving that is 1: 330, that is to say the alkyl sulfonic acid of 1 weight portion received to be dissolved in the distilled water of 330 weight portions, at 1～2 ℃ of held 48h; Obtain the antistatic coating liquid, for use;
B) the preparing centre layer 3, with vacuum aluminum-coated mode aluminium powder are plating to a side surface of first substrate layer 1, and obtaining a side surface at first substrate layer 1, to be formed with thickness be 0.04 * 10
-3Mm and light transmittance are 65% the central core of being filled the post of by the vacuum aluminium coat 3, and in this step, the material of first substrate layer 1 is a polyester film, and thickness is 0.012mm;
C) preparation second substrate layer 2; With the raw material of polyethylene particle as the first film layer 21 usefulness of forming (formation) second substrate layer 2; Will (masterbatch be also claimed master batch by the antistatic masterbatch; As follows) mix resulting mixed material mutually as the raw material of second thin layer 22 of forming (formations) second substrate layer 2 and as the raw material of the 3rd thin layer 23 of formation second substrate layer 2 with polyethylene particle by 1: 8 weight ratio; Send into the raw material that constitutes first, second and the 3rd thin layer 21,22,23 in the plastic extruder simultaneously; Three runners by the co-extrusion die head of plastic extruder are extruded; Obtain treating compound second substrate layer of extruding 2, wherein: first, second is respectively 0.0175mm, 0.035mm and 0.0175mm with the thickness of the 3rd thin layer 21,22,23, and promptly the thickness ratio each other of first, second, third thin layer 21,22,23 is 1: 2: 1;
D) compound extruding; Will be by step C) compound second substrate layer of extruding 2 of treating that obtains introduces the high temperature extruders and extrudes once more; The temperature of extrusion die is 135～170 ℃, and obtaining by compound ideally each other that constitute for one and the thickness of first, second, third thin layer 21,22,23 is second substrate layer 2 of 0.07mm;
E) substrate layer is compound; At first; On the limit by glue spreader (upper glue roller) to by step B) central core 3 that obtains is that to make first substrate layer 1 is covered with adhesive layer 62 together with surfaces coated central core get into temperature with the gait of march of 60m/min under the state of adhesive layer 6 of 0.018mm be 50 ℃ drying tunnel towards the surface-coated thickness of a side of second substrate layer 2; So that make the solvent evaporates in the adhesive layer 6; When going out drying tunnel, make the first film layer 21 of adhesive layer 6 and second substrate layer 2 on surface of central core 3 compound, rolling; And being placed on temperature in rolling is slaking 48h under 50 ℃ the environment; Obtain waiting to be coated with the coiled material of antistatic coating liquid, two components that the adhesive layer 6 described in this step meets the U.S. FDA standard gather ethyl ester dry-type composite glue water, this glue preferred but not with being limited to use by the MHZ-3-1 type environment-friendly adhesive of the bright vast and boundless Science and Technology Ltd. in Changshu City, Jiangsu Province, China production and sales;
F) apply the antistatic coating liquid; By step e) obtain wait to be coated with under the debatching speed of coiled material with 60m/min of antistatic coating liquid; Respectively first base material 1 is applied by steps A back to the side surface (i.e. the surface of first substrate layer, 1 outward) of central core 3 and to the 3rd thin layer 23 of second substrate layer 2 side surface (i.e. the surface of the 3rd thin layer 23 outwards) back to second thin layer 22 simultaneously by a pair of roller of filming) the antistatic coating liquid that obtains; Thereby form first antistatic backing 4 and form second antistatic backing 5 at the 3rd thin layer 23 back to a side surface of second thin layer 22 back to a side surface of central core 3 at first substrate layer 1, the grammes per square metre of first, second antistatic backing 4,5 is 0.035g/m
2, obtaining the antistatic index is 10
7-10
9The electron level anti-static shielding bag that Ω and anti-static ability duration reached more than 18 months is used sheet material.
Embodiment 3:
Ask for an interview Fig. 1, the sheet material that uses with the electron level anti-static shielding bag of making structure shown in Figure 1 is example:
A) preparation antistatic coating liquid; In airtight container; Will by the alkyl sulfonic acid of commercially available channel acquisition receive with distilled water by weight the ratio dissolving that is 1: 400, that is to say the alkyl sulfonic acid of 1 weight portion received to be dissolved in the distilled water of 400 weight portions, at 21～35 ℃ of held 12h; Obtain the antistatic coating liquid, for use;
B) the preparing centre layer 3, with vacuum aluminum-coated mode aluminium powder are plating to a side surface of first substrate layer 1, and obtaining a side surface at first substrate layer 1, to be formed with thickness be 2.4 * 10
-5Mm and light transmittance are 65% the central core of being filled the post of by the vacuum aluminium coat 3, and in this step, the material of first substrate layer 1 is a polyester film, and thickness is 0.018mm;
C) preparation second substrate layer 2; With the raw material of polyethylene particle as the first film layer 21 usefulness of forming (formation) second substrate layer 2; Will (masterbatch be also claimed master batch by the antistatic masterbatch; As follows) mix resulting mixed material mutually as the raw material of second thin layer 22 of forming (formations) second substrate layer 2 and as the raw material of the 3rd thin layer 23 of formation second substrate layer 2 with polyethylene particle by 1: 9 weight ratio; Send into the raw material that constitutes first, second and the 3rd thin layer 21,22,23 in the plastic extruder simultaneously; Three runners by the co-extrusion die head of plastic extruder are extruded; Obtain treating compound second substrate layer of extruding 2, wherein: first, second is respectively 0.013mm, 0.026mm and 0.013mm with the thickness of the 3rd thin layer 21,22,23, and promptly the thickness ratio each other of first, second, third thin layer 21,22,23 is 1: 2: 1;
D) compound extruding; Will be by step C) compound second substrate layer of extruding 2 of treating that obtains introduces the high temperature extruders and extrudes once more; The temperature of extrusion die is 135～170 ℃, and obtaining by compound ideally each other that constitute for one and the thickness of first, second, third thin layer 21,22,23 is second substrate layer 2 of 0.052mm;
E) substrate layer is compound; At first; On the limit by glue spreader (upper glue roller) to by step B) central core 3 that obtains is that to make first substrate layer 1 is covered with adhesive layer 62 together with surfaces coated central core get into temperature with the gait of march of 50m/min under the state of adhesive layer 6 of 0.015mm be 60 ℃ drying tunnel towards the surface-coated thickness of a side of second substrate layer 2; So that make the solvent evaporates in the adhesive layer 6; When going out drying tunnel, make the first film layer 21 of adhesive layer 6 and second substrate layer 2 on surface of central core 3 compound, rolling; And being placed on temperature in rolling is slaking 36h under 55 ℃ the environment; Obtain waiting to be coated with the coiled material of antistatic coating liquid, two components that the adhesive layer 6 described in this step meets the U.S. FDA standard gather ethyl ester dry-type composite glue water, this glue preferred but not with being limited to use by the MHZ-3-1 type environment-friendly adhesive of the bright vast and boundless Science and Technology Ltd. in Changshu City, Jiangsu Province, China production and sales;
F) apply the antistatic coating liquid; By step e) obtain wait to be coated with under the debatching speed of coiled material with 50m/min of antistatic coating liquid; Respectively first base material 1 is applied by steps A back to the side surface (i.e. the surface of first substrate layer, 1 outward) of central core 3 and to the 3rd thin layer 23 of second substrate layer 2 side surface (i.e. the surface of the 3rd thin layer 23 outwards) back to second thin layer 22 simultaneously by a pair of roller of filming) the antistatic coating liquid that obtains; Thereby form first antistatic backing 4 and form second antistatic backing 5 at the 3rd thin layer 23 back to a side surface of second thin layer 22 back to a side surface of central core 3 at first substrate layer 1, the grammes per square metre of first, second antistatic backing 4,5 is 0.028g/m
2, obtaining the antistatic index is 10
7-10
9The electron level anti-static shielding bag that Ω and anti-static ability duration reached more than 18 months is used sheet material.
Claims (10)
1.
a kind of electron level anti-static shielding bag is used sheet material; Comprise first, second substrate layer (1,2), central core (3), first antistatic backing (4) and second antistatic backing (5); Central core (3) is positioned between first, second substrate layer (1,2); First antistatic backing (4) is combined in the surface of first substrate layer (1) back to a side of said central core (3); And second antistatic backing (5) is combined in the surface of second substrate layer (2) back to a side of said central core (3); It is characterized in that: described first antistatic backing (4) and described second antistatic backing (5) are antistatic and film; Between described central core (3) and described second substrate layer (2), have additional adhesive layer (6); And described second substrate layer (2) comprises first, second thin layer (21,22) and the 3rd thin layer (23), and second thin layer (22) is positioned between the first, the 3rd thin layer (21,23), and the first film layer (21) combines with described adhesive layer (6); Described second antistatic backing (5) is combined in the surface of the 3rd thin layer (23) back to a side of said second thin layer (22), and wherein: described second, third thin layer (22,23) contains the antistatic masterbatch.
2.
electron level anti-static shielding bag according to claim 1 is used sheet material; The thickness that it is characterized in that described substrate layer (1) is 0.012-0.025 ㎜; The thickness of described second substrate layer (2) is 0.04-0.07 ㎜; The thickness of described central core (3) is 0.012-0.015 ㎜; The grammes per square metre of described first, second antistatic backing (4,5) is 0.021-0.035g/ ㎡, and the thickness of described adhesive layer (6) is 0.01-0.07 ㎜, and wherein: the thickness of described the first film layer (21) is 0.01-0.0175 ㎜; The thickness of second thin layer (22) is 0.02-0.035 ㎜, and the thickness of the 3rd thin layer (23) is 0.01-0.0175 ㎜.
3.
electron level anti-static shielding bag according to claim 1 and 2 is used sheet material, it is characterized in that described first substrate layer (1) is polyester film or nylon film.
4.
electron level anti-static shielding bag according to claim 1 and 2 is used sheet material, it is characterized in that described central core (3) is a vacuum aluminium coated layer.
5.
electron level anti-static shielding bag according to claim 1 is used sheet material; It is characterized in that described first, second thin layer (21,22) and the 3rd thin layer (23) are polyethylene film; Wherein: second thin layer (22) and the 3rd thin layer (23) are and contain described antistatic masterbatch, and antistatic masterbatch and poly weight ratio are 1: 8-10.
6.
electron level anti-static shielding bag according to claim 1 is used sheet material, it is characterized in that described antistatic films to be dissolved in the distilled water by sodium alkyl sulfonate to process.
7.
electron level anti-static shielding bag according to claim 6 is used sheet material, and the weight ratio that it is characterized in that said sodium alkyl sulfonate and distilled water is 1: 330-490.
8.
electron level anti-static shielding bag according to claim 1 and 2 is used sheet material, it is characterized in that described adhesive layer (6) gathers ethyl ester dry-type composite glue water for the two components that meet the U.S. FDA standard.
9.
Electron level anti-static shielding bag according to claim 4 is used sheet material, and the thickness that it is characterized in that described vacuum aluminium coated layer is 2.4 * 10 -5 -0.4 * 10 -3 ㎜, light transmittance are 65-75%.
10.
A kind of electron level anti-static shielding bag as claimed in claim is characterized in that may further comprise the steps with the manufacture method of sheet material:
A) preparation antistatic coating liquid, with sodium alkyl sulfonate and distilled water by weight than being 1: the ratio of 330-490 is dissolved in the airtight container, at-5～35 ℃ of held 12-72h, obtains the antistatic coating liquid, and is for use;
B) preparing centre layer (3) is plating to a side surface of first substrate layer (1) with vacuum aluminum-coated mode with aluminium powder, forms the central core of being filled the post of by aluminium coat (3) at a side surface of first substrate layer (1), and wherein: the thickness of central core (3) is 2.4 * 10
-5
～0.4 * 10
-3
Min, light transmittance are 65-75%;
C) preparation second substrate layer (2); With the raw material of polyethylene particle as the first film layer (21) that constitutes second substrate layer (2); Will be by antistatic masterbatch and polyethylene particle by 1: the weight ratio of 8-10 be mixed the mixed material that obtained mutually as the raw material of second thin layer (22) that constitutes second substrate layer (2) and the raw material of the 3rd thin layer (23); The raw material that will constitute the raw material of first, second thin layer (21,22) and constitute the 3rd thin layer (23) is extruded in three runners by the coextrusion die head of plastic extruder simultaneously, obtains treating compound second substrate layer of extruding (2);
D) compound extruding, with treating that compound second substrate layer of extruding (2) extrudes through the high temperature extruder again, obtain first, second, third thin layer (21,22) compound each other for one and thickness be second substrate layer (2) of 0.04-0.07 ㎜;
E) substrate layer is compound; At first; By glue spreader central core (3) being made first substrate layer (1) is covered with adhesive layer (6) together with surfaces coated central core (3) on the limit under the state of the surface-coated adhesive layer (6) of a side of second substrate layer (2) is 50-70 ℃ drying tunnel by way of temperature with the gait of march of 40-60m/min; Use the solvent evaporates that makes in the adhesive layer (6), when going out drying tunnel, make the first film layer (21) of adhesive layer (6) and second substrate layer (2) on surface of central core (3) compound, rolling; And being placed on temperature in rolling is slaking 24-48h under 50-60 ℃ the environment, obtains waiting to be coated with the coiled material of antistatic coating liquid;
F) apply the antistatic coating liquid; Waiting to be coated with under the debatching state of coiled material with 40-60m/min of antistatic coating liquid; Respectively first substrate layer (1) is applied the antistatic coating liquid back to central core (3) one side surfaces and to the 3rd thin layer (23) of second substrate layer (2) back to a side surface of second thin layer (22) by a pair of applicator roll; Form first antistatic backing (4) and form second antistatic backing (5) back to a side surface of second thin layer (22) back to a side surface of said central core (3) at first substrate layer (1) at the 3rd thin layer (23); The grammes per square metre of first, second antistatic backing (4,5) is 0.021-0.035g/ ㎡; Rolling obtains electron level anti-static shielding bag and uses sheet material
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102707530A CN102448279A (en) | 2011-09-14 | 2011-09-14 | Sheet material used by electronic grade anti-static shielding bag and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102707530A CN102448279A (en) | 2011-09-14 | 2011-09-14 | Sheet material used by electronic grade anti-static shielding bag and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102448279A true CN102448279A (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102707530A Pending CN102448279A (en) | 2011-09-14 | 2011-09-14 | Sheet material used by electronic grade anti-static shielding bag and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999737A (en) * | 2015-08-18 | 2015-10-28 | 恩斯盟防静电材料(苏州)有限公司 | Composite film suitable for producing moisture-proof and anti-static packing bags |
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|---|---|---|---|---|
| CN2728165Y (en) * | 2004-07-07 | 2005-09-21 | 上海浪劲包装材料科技有限公司 | Anti-static shielding film |
| CN101628494A (en) * | 2008-07-15 | 2010-01-20 | 高国兴 | Manufacturing method of electrostatic shielding multilayer film |
| CN201520085U (en) * | 2009-11-02 | 2010-07-07 | 王天坤 | Anti-static dampproof film |
| CN101992575A (en) * | 2009-08-05 | 2011-03-30 | 国际化学有限公司 | Polycarbonate co-extrusion multi-layer sheet material |
-
2011
- 2011-09-14 CN CN2011102707530A patent/CN102448279A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2728165Y (en) * | 2004-07-07 | 2005-09-21 | 上海浪劲包装材料科技有限公司 | Anti-static shielding film |
| CN101628494A (en) * | 2008-07-15 | 2010-01-20 | 高国兴 | Manufacturing method of electrostatic shielding multilayer film |
| CN101992575A (en) * | 2009-08-05 | 2011-03-30 | 国际化学有限公司 | Polycarbonate co-extrusion multi-layer sheet material |
| CN201520085U (en) * | 2009-11-02 | 2010-07-07 | 王天坤 | Anti-static dampproof film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999737A (en) * | 2015-08-18 | 2015-10-28 | 恩斯盟防静电材料(苏州)有限公司 | Composite film suitable for producing moisture-proof and anti-static packing bags |
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Application publication date: 20120509 |