JP2000355067A - Packaging clean film and packaging bag using the film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably supply the cleanness of an inner and an outer surfaces by a method wherein an at least three-layered laminate is separated between a first base material layer and a second base material layer so as to arrange the second base material layer, a third base material layer and the first base material layer in the order named so as to pile them up under the state that the outside surface and the inside surface expose the separated surfaces. SOLUTION: By laminating at least three layers or a first, a second and a third base material layers 1, 2 and 3 in the order named, a laminate 4 is produced. Further, as shown by the arrow P, the laminate 4 is separated between the first base material layer 1 and the second base material layer 2, resulting in producing separated surfaces 5 and 6. Next, as shown by the arrow P1, after the separation, the first base material layer 1 is turned upside down so as to obtain the order of the second base material layer 2, the third base material layer 3 and the first base material layer 1 and, at the same time, a laminate 9 is formed by piling up the outside surface 7 and the inside surface 8 so as to expose the produced separated surfaces 5 and 6 in order to manufacture a packaging clean film A. Accordingly, cleanness is stably produced and a double bag can be easily produced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clean film for packaging and a packaging bag using the same, and more particularly, to a product having a problem of contamination with dust, such as a blood cell testing apparatus. Chemical products such as diluents and artificial dialysis solutions for
Alternatively, a packaging clean film which can be suitably used for electronic component products such as silicon wafers, magnetic disks, semiconductor products, photomasks, pellicles, and packaging bags for dust-proof clothing, and the like. It relates to the packaging bag used.

[0002]

2. Description of the Related Art For example, semiconductor products such as ICs and LSIs are extremely disliked by dust because they cause disconnection and the like. Therefore, these products are manufactured in a clean room. Have been. In addition, regarding various pharmaceutical products, etc., in consideration of their effects, effects on the human body, etc., as described above,
It is manufactured in a clean room because it extremely dislikes dust and dirt. Thus, since working in the clean room, the raw materials, parts,
When carrying intermediate products into the clean room,
Attention must be paid as much as possible to prevent dust, dirt and the like from adhering and being carried into the clean room. Also, it is necessary to prevent dust and dirt from adhering to the finished product. Further, since the manufacturing operation is performed in the clean room, not only dust and the like due to the drop of the hair and the like of the worker itself, but also dust and the like attached to the clothes and the like worn by the worker are quite noticeable. Must be added. In general, the above raw materials, parts, intermediate products, finished products, etc., or clothes worn by workers are transported by a packaging material conventionally manufactured in a clean room and washed with ultrapure water. Filled and packaged using etc.
It is distributed and transported.

[0003]

However, as described above, manufacturing a packaging material in a clean room requires a large-scale and complicated manufacturing apparatus and significantly increases the manufacturing cost. There is a problem that it becomes high. In addition, the cleaning device must be provided for cleaning with ultrapure water after production, which further complicates the process. In addition, even if it is washed with ultrapure water as described above, there is also a problem that the degree of cleaning lacks the certainty of the cleanness of the filled package. Furthermore, when the contents are filled and packaged with a packaging material, static electricity or the like is generated during transportation, and there is a problem that the contents or products in the vicinity thereof are affected by the static electricity or the like.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a clean film for packaging, which is low in cost, has a stable degree of cleanness, and is capable of effectively attenuating generated static electricity and the like, and a packaging bag comprising the same. First, Japanese Patent Application No. 7-104660
And Japanese Patent Application No. 7-104661. However, in the invention according to the above patent application, in order to obtain a clean substrate surface,
The first protective film or the second protective film or the like is required, and finally, in the packaging form,
These protective films become unnecessary, and there is a problem that not only a hand gap such as a disposal process is required, but also the manufacturing cost is high. Furthermore, in recent years,
For example, in a filled packaging product of a pharmaceutical liquid product such as a diluent for a blood cell analyzer or an artificial dialysate, for example, the diluent for a blood cell analyzer described above has a size of 1-2 μm
It is used as a diluent for analyzing the number of blood cells, red blood cells of 7 to 8 μm, white blood cells of 13 to 15 μm, etc., and a cleaning liquid of an inspection apparatus. Therefore, extremely high cleanliness is required. It is not permissible for dust, dirt, and the like to adhere to a packaging bag or the like for filling and packaging the diluent for blood cell analyzers. At present, for example, in order to prevent liquid leakage due to a pinhole, two containers are used as a packaging container for filling and packaging a medical liquid product such as the diluting liquid for a blood cell analyzer or the artificial dialysate. Molded containers and the like formed by welding and vacuum-forming the above vacuum-formed sheet are used.
It has the advantage of being thick and high in strength, and it is easy for dust and dirt to adhere during molding and the like, and requires the transportation and storage space of the molded container. Is difficult to supply continuously. Therefore, according to the present invention, the degree of cleanness of the inner and outer surfaces can be stably formed, and at the same time, a double bag can be easily formed.
Further, the double bag can be continuously supplied at the time of filling and packaging,
And a clean film for packaging that can be produced at low cost without wasting packaging materials and the like, and that can suitably produce a packaging bag or the like for preventing dust and dirt from being mixed. An object of the present invention is to provide a packaging bag using the same.

[0004]

As a result of various studies to solve the above problems, the present inventor has focused on a melt extrusion lamination method, a dry lamination method, and the like. A laminated body in which at least first, second, and third base layers are sequentially laminated using a usual lamination method such as extrusion molding, T-die coextrusion molding, and inflation coextrusion molding. And then
The first base layer and the second base layer constituting the laminate are separated from each other, or the second base layer and the third base layer constituting the laminate are separated from each other. Between the second base material layer, the third base material layer, and the first base material layer,
And, the outer surface and the inner surface are laminated so as to expose the peeled surface to produce a laminated body, or the second base material layer,
A first base material layer, and a third base material layer, and
When the multilayer body was manufactured by laminating the outer surface and the inner surface so as to expose the peeled surface, the outer surface and the inner surface constituting the multilayer body were dust-free, exposing a clean surface, and A packaging bag is manufactured by using the surface, and an electronic product, a medicinal liquid product, and the like are filled and packaged in the packaging bag. Double bags can be easily formed, and furthermore, the double bags can be continuously supplied at the time of filling and packaging, and can be produced at low cost without wasting packaging materials, and dust,
The present invention has been completed by finding that it is possible to suitably manufacture a packaging bag or the like for preventing dust and the like from being mixed and to manufacture an extremely clean packaged product.

That is, the present invention provides at least the first,
A laminate obtained by sequentially laminating the second and third three base layers is peeled between the first base layer and the second base layer, and a second base layer, The third base material layer and the first base material layer are arranged in this order, and the outer side surface and the inner side surface of the first base material layer are stacked so as to expose the release surface. A clean film for packaging, or a laminate in which at least three first, second, and third base layers are sequentially stacked, the second base layer and the third base layer And the second substrate layer, the first substrate layer, and the third substrate layer in this order, and such that the outer surface and the inner surface expose the peeled surface. The present invention relates to a clean film for packaging characterized by comprising a multi-layer structure constituted by a plurality of layers and a bag for packaging using them.

According to the present invention, a multi-layered laminate is manufactured by an ordinary lamination method such as a melt extrusion lamination method or a dry lamination method, whereby dust existing between the layers of the laminate is reduced. Dust or the like is captured in the film by heating and melting the film at the time of lamination, or, when laminating using a laminating adhesive or the like, is captured in the adhesive layer, Thus, after lamination, when the laminate is peeled between the layers, the surface is dust-free,
A clean surface can be exposed, and further, after peeling, each substrate is inverted and the outer surface and the inner surface are laminated so that the peeled surface is exposed to produce a laminated body, and further, Utilizing the surface, a packaging bag is manufactured, and the packaging bag is filled with electronic products, pharmaceutical liquid products, etc., and the inner and outer surfaces are cleaned.
In addition, it is possible to easily form a double bag at the same time as it is formed stably, and furthermore, it is possible to continuously supply the double bag at the time of filling and packaging, and without wasting packaging materials, etc. It is possible to manufacture a packaging bag or the like that can be produced at low cost and that prevents dust and dirt from being mixed in, and can produce an extremely clean packaged product. Also,
In the present invention, by providing an antistatic layer on the laminate, it is possible to prevent the contents from being affected by static electricity or the like.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the drawings. First, the layer structure of a clean film for packaging according to the present invention and a packaging bag using the same will be described with reference to the drawings.
FIGS. 2 and 3 are schematic cross-sectional views illustrating a few examples of the layer structure of the packaging clean film according to the present invention. FIGS.
FIG. 4 is a schematic perspective view illustrating an example of the configuration of a packaging bag manufactured using a film, and a schematic cross-sectional view taken along line Y and Y ′ of FIG. 3.

First, in the present invention, as shown in FIG. 1, at least first, second and third base layers 1, 2 and 3 are sequentially laminated to form a laminate 4 Formed, and further, as shown by an arrow P, the laminate 4 is peeled between the first base material layer 1 and the second base material layer 2 constituting the same, and the peeled surfaces 5 and 6 are separated. formed, then, as indicated by the arrow P _1,
After the above peeling, the first base material layer 1 is turned over, and the second base material layer 2, the third base material layer 3, and the first base material layer 1 are arranged in this order. The side surface 7 and the inner side surface 8 are laminated so as to expose the peeled surfaces 5 and 6 formed as described above, thereby forming a laminated body 9 to manufacture the clean film A for packaging according to the present invention. It is. Alternatively, in the present invention,
As shown in FIG. 2, at least first, second, and
A laminate 4 is formed by sequentially laminating the third three base material layers 1, 2, and 3.
And further, as shown by the arrow P, the laminate 4
Peeling between the second substrate layer 2 and the third substrate layer 3 constituting it, to form a release surface 5,6, then, as indicated by the arrow P _1, after peeling above, The laminate composed of the first base material layer 1 and the second base material layer 2 and the third base material layer 3 are inverted, and the second base material layer 2, the first base material layer 1, And, in order of the third base material layer 3, the outer surface 7 and the inner surface 8 are layered so as to expose the peeled surfaces 5, 6 formed above to form a multilayer body 9. The packaging cream according to the present invention.
It is capable of producing emission film A _1.

Next, a description will be given of a packaging bag using the above-mentioned packaging clean film according to the present invention in the present invention. FIG. 3 is a schematic perspective view and FIG.
As shown in the schematic cross-sectional view taken along the line Y and Y 'in FIG. 1, the case of using the above-prepared packaging clean film A will be described.
The two base films A, A are prepared, and the first base material layer 1,
The peeled surfaces 5 and 5 constituting the inner side surfaces 8 and 8 are superposed on each other, and heat seal portions 10 and 10 are formed on three sides of the outer periphery. The packaging bag B according to the present invention can be manufactured. Thus, in the present invention, although not shown, the contents are filled through the opening of the unheated portion of the packaging bag manufactured as described above, and then the opening is filled with the heat seal. Thus, a heat-sealed portion is formed to produce a clean packaged product using the packaging bag according to the present invention. In addition,
In the present invention, a packaging bag according to the present invention and a clean packaging product using the same are produced in the same manner as described above using the packaging clean film shown in FIG. Is what you can do. The above examples illustrate a few examples of the clean film for packaging according to the present invention and the packaging bag using the same.
The present invention is not limited by this. For example,
Although not shown, instead of using two sheets of the wrapping clean film as described above, one of the wrapping clean films is used.
Using a sheet, the sheets are overlapped with the peeled surface constituting the inner surface of the first base material layer facing each other, and then a heat seal portion is formed on two sides around the outer periphery thereof. Thus, the packaging bag according to the present invention can be manufactured.

In the present invention, the above-described clean film for packaging according to the present invention and the bags for packaging using the same are all manufactured and manufactured in a clean room or the like. Thus, it is possible to manufacture a clean film for packaging, a packaging bag, and the like in which dust and dirt are prevented from being mixed. Further, in the present invention, a clean packaged product can be manufactured by filling and packaging in a clean room or the like also in filling and packaging. Alternatively, in the present invention, at least the first, second, and third base layers are sequentially laminated to produce a laminate, which is then sufficiently washed with water or the like to sufficiently remove dust and dirt. And dried, and then the laminate is cleaned.
After that, it is carried into a clean room or the like, and thereafter, in a clean room or the like, by performing bag making, filling and packaging, etc.
It can produce clean packaging products. As the above-mentioned clean room or the like, for example, a clean room or the like that is cleaned to a class 100 (0.5 μm) is provided, and the clean room is maintained at a positive pressure.
A room or the like can be used.

Next, in the present invention, the material constituting the clean film for packaging according to the present invention, the packaging bag using the same, the production method thereof, and the like will be described. As a material for forming the first, second, and third base layers constituting the clean film, the packaging bag, and the like, various types of resin melt extrusion lamination or film lamination can be performed. Or a resin film or sheet thereof. Specifically, for example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, α-olefin-based resin polymerized using a metallocene catalyst, polypropylene, ethylene-
Propylene copolymer, ethylene-vinyl acetate copolymer,
Ionomer resin, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, methyl pentene polymer, polyolefin resin such as polybutene polymer, polyvinyl chloride resin, poly Vinylidene chloride resin, polystyrene resin, poly (meth) acrylic resin, polyacrylonitrile resin, polyester resin, polyamide resin, polyurethane resin, polyaminoplast resin such as urea or melamine, alkyd resin, unsaturated Polyester resin, diallyl phthalate resin, phenol resin, epoxy resin, polyimide resin, polyamide imide resin, polycarbonate resin, polyvinyl alcohol resin, ethylene-vinyl acetate copolymer Combined saponified product, fluorine resin, Ron resins, polyacetal - various known resins such as Le resin or a film or sheet of the respective species of the resin - bets, or can use the film-like material. In the present invention, the above-mentioned film or sheet may be unstretched or stretched in a uniaxial or biaxial direction. The thickness is arbitrary, but preferably about 5 to 300 μm. Further, in the present invention, in addition to the above-mentioned films or sheets, for example, a metal foil or a vapor-deposited film of cellophane, synthetic paper, aluminum or the like, a vapor-deposited film of a metal oxide such as silicon oxide, or the like may be used. Can be.

In the present invention, the materials constituting the first and third base layers may be, for example, a laminate for manufacturing a laminate or a bag for manufacturing a packaging bag. Since it is desirable to have heat sealability in the above, for example, the above resin, or a film or sheet of the resin, is heated and melted to have heat sealability. It is desirable to use one.
Specifically, for example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, α-olefin-based resin polymerized using a metallocene catalyst, polypropylene, ethylene-propylene copolymer, ethylene -Vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer, ethylene-
Acrylic acid copolymer, ethylene-methacrylic acid copolymer, polyolefin resin such as methylpentene polymer, polybutene polymer, polyvinyl chloride resin, polystyrene resin, poly (meth) acrylic resin, polyacrylonitrile resin And various resins such as polyamide resins, polyester resins, and others, or films or sheets of those various resins.

Further, in the present invention, the material constituting the second base material layer has a basic function of forming a bag when producing a packaging bag or the like, and acts as a base material film. Therefore, for example, from the above resin or a film or sheet of the resin, various properties such as weather resistance, heat resistance, pressure resistance, water resistance, light resistance, chemical resistance, etc. It is desirable to use a tough resin, or a film or sheet of the resin, which is excellent in robustness, excellent in physical or chemical strength, and the like. Specifically, for example, polyethylene resins, polypropylene resins, polyester resins such as polyethylene terephthalate, polyamide resins such as various nylon resins, polycarbonate resins, polystyrene resins,
A resin such as a polyvinyl chloride resin or the like, or a film or sheet of the resin can be used. In the above description, it is preferable to use a biaxially stretched resin film or sheet from the viewpoint of strength and the like.

Next, in the present invention, a method for producing a laminate constituting the above-described packaging clean film will be described. First, in the present invention, at least the first, second,
In order to manufacture a laminate in which the third base material layer is stacked, for example, the above-described various resins are used, and at least the first, second, and third base materials are selected from them. Select the resin that constitutes the layer, combine the resins,
For example, at least each of the first, second, and third base material layers is formed by using a known co-extrusion lamination method such as a co-extrusion method, a T-die co-extrusion method, and a co-extrusion inflation method. The resin can be co-extruded to produce a laminate. In the above-mentioned co-extrusion method and the like, if necessary, a heat-fusible resin or the like is used between layers, and an adhesive resin layer having a film thickness of about 1 to 10 μm is formed by the heat-meltable resin or the like. The body can be manufactured. In the above, as the hot-melt resin, for example, low-density polyethylene, medium-density polyethylene, high-density polyethylene,
Linear low-density polyethylene, α-olefin-based resin polymerized using a metallocene catalyst, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer , Ethylene-acrylic acid copolymer, ethylene-
Polyolefin resins such as methacrylic acid copolymers, methylpentene polymers, polybutene polymers, and acid-modified polyolefin resins such as acid-modified polyethylene and acid-modified polypropylene can be used.

Alternatively, in the present invention, at least
In order to produce a laminate in which the first, second, and third base material layers are laminated, for example, the above-described various resin films or sheets are used, and at least A resin film or sheet constituting the first, second, and third base material layers is selected, and the resin film or sheet is combined, for example, by dry lamination (solvent-free). Mold, wax hot melt mold, etc.),
Using a normal lamination method such as wet lamination, extrusion lamination, etc., alone or in combination, at least the first, second, and third base material layers are laminated to form a laminate. Can be manufactured.

In the production of the above-mentioned laminate, in the present invention, between the first base material layer and the second base material layer and between the second base material layer and the third base material layer After laminating, each of the base layers is peeled off, so that each of the materials constituting the first and second base layers and the second and third base layers is formed. When laminating, they have mutual affinity, compatibility and the like and can be welded or adhered to form a laminated body, but at the time of peeling, a resin having the property of being able to peel off and separate from each other between layers, Alternatively, the resin film or sheet
It is desirable to use In the present invention, the respective materials constituting the first base material layer and the second base material layer or the second base material layer and the third base material layer are mutually adhered or adhered to each other. In the case where the properties are strong, for example, the above-mentioned resin may be interposed between the first base material layer and the second base material layer or between the second base material layer and the third base material layer. Vehicle and
A composition comprising a plasticizer, a silicone, a surfactant, a stearic acid salt, a polyethylene wax, a metal soap, a release agent such as a fatty acid amide, and the like is used.
This can be coated or printed to form a release layer or the like.

In the production of the above-mentioned laminate, when laminating using the above-mentioned resin film or sheet, for example, an organic titanium-based AC agent, an isocyanate-based A
C agent (urethane type), AC agent for laminating such as polyethyleneimine AC agent, or polyurethane adhesive,
Polyester-based adhesives, epoxy-based adhesives, acrylic-based adhesives, wax-based adhesives, water-soluble adhesives mainly composed of starch, gelatin, casein, polyvinyl alcohol, etc., emulsions such as polyvinyl acetate emulsion and acrylic emulsion Various adhesives such as a system adhesive, an ultraviolet or electron beam curing type solventless adhesive, and the like can be used. Further, in the production of the above-mentioned laminate, mainly the above-mentioned resins and the like, and other various auxiliaries can be used, for example, a plasticizer, a stabilizer, an antioxidant, a light stabilizer, Coloring agents, lubricants, antistatic agents, flame retardants,
A filler, etc. can be optionally added and used. Furthermore, in the production of the above-mentioned laminate, an antistatic layer and the like can be laminated. Therefore, such an antistatic layer may cause problems such as breakage of electronic components such as IC components due to generation of static electricity. There is, for that purpose to prevent the occurrence of a charged state, specifically, a coating film of a surfactant-based antistatic agent or a siloxane-based antistatic agent, a metal thin film by vapor deposition or plating or a metal foil, The above-mentioned resin or the like is used as a vehicle, and one or more of an antistatic agent such as metal powder, an inorganic substance such as carbon, a silicone-based compound, and a surfactant is added thereto. A coating film, a molded film, or the like of a composition to which an additive is arbitrarily added can be used.

Next, in the present invention, after the laminate is manufactured as described above, the laminate is placed between the first base material layer and the second base material layer, or the second base material layer. Between the first base layer and the second base layer, or between the first base layer and the second base layer, or between the second base layer and the third base layer. Both contact surfaces with the base material layer are exposed, and respective peeled surfaces are formed. In the above, as the peeling method, for example, the laminate is supplied from a roll on which the laminate is wound, and firstly, the end is peeled off by hand or the like to form the beginning of peeling, and then the peeling is performed. It can be carried out by, for example, a method of peeling off the end via a roll or the like.

Next, in the present invention, after the laminate is peeled off as described above, the first base material layer is inverted, and the second base material layer, the third base material layer, and the first base material layer are removed. In the order of the base material layer, and
The outer surface and the inner surface are laminated so as to expose the peeled surface formed above, and are integrated in the order of the second base material layer, the third base material layer, and the first base material layer. To form a layered body
The clean film for packaging according to the present invention can be produced. Alternatively, in the present invention, after the laminate is peeled off as described above, the laminate composed of the first base material layer and the second base material layer and the third base material layer are inverted to form the second base material. Material layer, first
The base material layer and the third base material layer in order, and the outer surface and the inner surface are layered so as to expose the release surface formed above, and the second base material layer, 1 base material layer, and
By forming an integrated multilayer body in the order of the third base material layer, the clean film for packaging according to the present invention can be manufactured. For a specific example of the method for producing the above-described packaging clean film according to the present invention, for example, as shown in a schematic sectional view of FIG. The second base material layer 2 and the third base material layer 3 are sequentially stacked to produce a rolled laminate 4a,
Next, the first base material layer 1 and the second base material layer 2 constituting the laminate 4a are separated and separated into the first base material layer 1 and the second base material layer 2. The surfaces 5 and 6 are formed, and then, as shown by an arrow P, the first base material layer 1 peeled off from the wound laminate 4a is turned over. The first substrate layer 1 that has been peeled off from the substrate is peeled off by one turn, and the non-peeled surface 11 is the third substrate layer 3 that constitutes the laminate 4a.
The second base layer 2, the third base layer 3, and the first base layer 1 are stacked in such a manner as to be stacked on the back side surface 12 of the first base layer 2. The side surface 8 is overlaid so as to expose the peeled surfaces 5 and 6 peeled as described above, and the second base layer 2, the third base layer 3, and the first base layer 1 are arranged in this order. forming a integral multilayer body, packaging chestnut according to the present invention - can be produced down the film a _2. In the present invention, it is also possible to form a stacking clean film as it is after stacking and forming a multilayer body,
Alternatively, after laminating, after forming a laminated body, for example, a heating plate,
A heat roll or the like may be used, and the entire surface may be subjected to heat sealing such as heating and pressurizing to form a clean film for packaging.

Next, in the present invention, a packaging bag according to the present invention is manufactured using the above-prepared clean film for packaging. An example will be described. In the present invention, although not shown, for example, a pair of the above-prepared clean screen films is prepared, and the heat-sealing property of the pair of clean screen films is determined. Then, the pair of superimposed cleaning films are heat-sealed along the flow direction by a heat-sealing device or the like in the flow direction. Heat sealing is performed to form a heat seal portion in the flow direction at the outer peripheral end portions of the pair of clean films for packaging, and thereafter, the sheets are overlaid using a width direction seal device or the like. A pair of packing clean films are sealed along the width direction of the outer peripheral end portions to form a heat seal portion in the width direction. Next, in the present invention, a pair of clean films for packaging, in which a heat seal portion in the flow direction and a heat seal portion in the width direction are formed as described above, are bagged using a cutting device or the like. By cutting one by one in the width direction, it is possible to manufacture a packaging bag according to the present invention in which one of the outer peripheral ends is opened and a heat seal portion is formed on three sides in this manner. Wear. In the above-mentioned bag making method, the outer peripheral edges of the pair of wrapping clean films are sealed by a flow direction sealing device, a width direction sealing device, or the like, and then a heat seal is performed by a cutting device. Cutting the center of the sealing portion to produce a packaging bag having a heat seal portion on all sides without an opening, and thus the packaging bag without an opening is
At the time of filling the contents, an opening may be provided by cutting a part of the contents, and the contents may be filled and sealed from here to produce a package. In the present invention, examples of the form of the seal for manufacturing the packaging bag include known seals such as a flat seal, a gusset seal, a palm joint seal, and an envelope seal. A seal form can be adopted. In the present invention, instead of using a pair of clean films for packaging as described above, a single clean film for packaging is used and has a heat seal property. The packaging bag according to the present invention can also be manufactured by folding the sheet in two so that the peeled surfaces are opposed to each other, and then forming a heat seal portion at the end of the outer peripheral periphery in the two directions.

The packaging bags according to the present invention manufactured as described above are then put together, stored in a separately prepared clean large-sized bag, and shipped. At the shipping destination, the packaging bag is used to store contents such as semiconductor products such as ICs and LSIs. Alternatively, it is used for filling and packaging of pharmaceuticals and the like. Then, the package is transported to a predetermined location. In this case, the contents may move in the packaging bag and generate static electricity. However, since the packaging bag according to the present invention is provided with an antistatic layer, the static electricity in the packaging bag is further reduced by including an antistatic agent in the heat seal layer or the like.
It is possible to escape to the outside through the bag material, so that the contents are not affected by static electricity.

[0022]

Next, the present invention will be described more specifically with reference to examples. Example 1 A clean room cleaned to a class of about 100 and maintained at a positive pressure by a co-extrusion method to a thickness of 30 μm.
m low-density polyethylene layer / adhesive polyethylene layer having a thickness of 5 μm / nylon layer having a thickness of 15 μm / linear low-density polyethylene layer having a thickness of 60 μm was continuously wound to produce a laminate. . Next, the above-prepared laminate was continuously peeled off between the 15 μm-thick nylon layer and the 60 μm-thick linear low-density polyethylene layer, and then the low-density 30 μm-thick low-density polyethylene layer was peeled off. The peeled surface of the linear low-density polyethylene layer having a thickness of 60 μm was placed on the surface of the low-density polyethylene layer having a thickness of 30 μm in a laminate comprising a polyethylene layer / adhesive polyethylene layer having a thickness of 5 μm / a nylon layer having a thickness of 15 The two films were laminated on the outside with the non-peeling surfaces facing each other, and then both were laminated while being continuously wound up, thereby producing a clean film for packaging according to the present invention. Next, a pair of the above-prepared clean films for packaging is prepared, and the 60 μm-thick polyethylene layers are superposed on each other with the peeled surfaces facing each other. A heat seal is formed by inserting the filled spout to form an upper heat seal portion. Thereafter, the left, right and lower peripheral edges are heat sealed to form a three-way heat seal.
A packaging bag according to the present invention was manufactured by forming a sealing portion.
Using the packaging bag manufactured as described above, fill and package the diluent for a blood cell analyzer through the opening of the spout, and further, spirally cap the spout so that no dust or dust is mixed. Produce clean packaging products.

Example 2 A biaxially stretched nylon film having a thickness of 15 μm and a linear low-density polyethylene film having a thickness of 30 μm with a clean room cleaned to a class of about 100 and maintained at a positive pressure. Are bonded together via an adhesive layer for polyether urethane-based laminate (film thickness 5 μm, dry state),
A first laminate was manufactured. Next, a linear low-density polyethylene layer having a thickness of 40 μm / adhesive low-density polyethylene layer having a thickness of 15 μm was provided on the surface of the biaxially stretched nylon film having a thickness of 15 μm of the first laminate produced above, The 15 μm-thick adhesive low-density polyethylene layer is melt-coextruded while facing each other to obtain a 30 μm-thick linear low-density polyethylene film / adhesive layer / 15 μm-thick biaxially stretched nylon film / 15 μm-thick Of the adhesive low-density polyethylene layer / straight-chain low-density polyethylene layer having a thickness of 40 μm. Next, the above-prepared laminate was continuously peeled off between the 15 μm-thick biaxially stretched nylon film and the 15 μm-thick adhesive low-density polyethylene layer. A 15 μm-thick linear low-density polyethylene film / adhesive layer / 15 μm-thick biaxially stretched nylon film laminate has a 30 μm-thick linear low-density polyethylene film and a 15 μm-thick adhesive layer after peeling. The laminated body composed of the density polyethylene layer / the linear low-density polyethylene layer having a thickness of 40 μm is overlapped with the surfaces of the linear low-density polyethylene layer having a thickness of 40 μm facing each other, and the peeling surfaces are on the outside. The two were laminated while being continuously wound to produce a clean film for packaging according to the present invention. Next, a pair of the above-prepared clean screen films for packaging is prepared, and the peeled surfaces of the adhesive low-density polyethylene layer having a thickness of 15 μm are superimposed on each other. Was heat-sealed to form a three-sided heat-sealed part to produce a packaging bag according to the present invention. Next, using the packaging bag manufactured as described above, a photomask is filled and packaged through the opening, and thereafter, the opening is heat-sealed to provide a cleaner free of dust and dirt. Manufactured packaging products.

Example 3 A clean room cleaned to a class of about 100 and maintained at a positive pressure by a co-extrusion method to a thickness of 30 μm.
A first laminate having a layer structure of m linear low-density polyethylene layer / adhesive polyethylene layer having a thickness of 5 μm / nylon layer having a thickness of 15 μm was produced. On the other hand, a 12 μm-thick biaxially oriented polyethylene terephthalate film having a silicon oxide vapor-deposited film is placed on the surface of a 15 μm-thick biaxially-stretched nylon film, and the silicon urethane vapor-deposited film is opposed to the polyester urethane film. A laminate having a thickness of 15 μm is bonded through an adhesive layer for a laminating system (film thickness: 5 μm, dry state).
A second laminate having a layer structure of a biaxially stretched nylon film having a thickness of 12 μm / adhesive layer / a deposited film of silicon oxide and a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm was produced. Next, the first laminate having the thickness of 15 μm
m and the 15 μm thick biaxially stretched nylon film surface of the second laminate produced above are opposed to each other, and a low-density polyethylene is used between them, and this is melt-extruded to a thickness of 30 μm. Extruded through a low-density polyethylene layer, and a linear low-density polyethylene layer having a thickness of 30 μm / adhesive polyethylene layer having a thickness of 5 μm / a nylon layer having a thickness of 15 μm / low-density polyethylene having a thickness of 30 μm A third laminate having a layer configuration of a layer / biaxially stretched nylon film having a thickness of 15 μm / adhesive layer / a deposited film of silicon oxide and a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm was produced. Next, a nylon layer having a thickness of 15 μm and a thickness of 30
between the low-density polyethylene layer having a thickness of 5 μm and a linear low-density polyethylene layer having a thickness of 30 μm after separation.
Bilayer stretching of 30 μm thick low-density polyethylene layer / 15 μm thick, after peeling, on a 30 μm-thick linear low-density polyethylene surface of a laminate consisting of an adhesive polyethylene layer having a thickness of 15 m / a nylon layer having a thickness of 15 μm Nylon film / adhesive layer / silicon oxide vapor-deposited film / biaxially oriented polyethylene terephthalate film having a thickness of 12 μm and a biaxially oriented polyethylene terephthalate film having a thickness of 12 μm. Axial stretched polyethylene terephthalate
The tofill surface is made to face, and the thickness of the peeled surface is 30μ.
The low-density polyethylene layer of m.m. was layered on the outside and laminated, and then both were laminated while being continuously wound to produce a clean film for packaging according to the present invention. Next, a pair of the above-prepared clean films for packaging are prepared, and the peeled surfaces of the low-density polyethylene layer having a thickness of 30 μm are superimposed on each other. To form a three-sided heat-sealed portion to produce a packaging bag according to the present invention. Next, using the packaging bag manufactured as described above, a photomask is filled and packaged through the opening, and thereafter, the opening is heat-sealed to provide a cleaner free of dust and dirt. Manufactured packaging products.

Example 4 A clean room cleaned to a class of about 100 and maintained at a positive pressure, and having a thickness of 60 μm by a co-extrusion method.
A laminate having a layer structure of m low-density polyethylene layer / 15 μm-thick nylon layer / 30 μm-thick linear low-density polyethylene layer was continuously wound and produced. next,
The laminate produced above was continuously peeled between the low-density polyethylene layer having a thickness of 60 μm and the nylon layer having a thickness of 15 μm, and then the nylon layer having a thickness of 15 and the straight layer having a thickness of 30 μm were peeled off. The laminated body composed of the chain low-density polyethylene layer is superposed on the surface of the linear low-density polyethylene layer having a thickness of 30 μm, with the release surface of the low-density polyethylene layer having a thickness of 60 μm facing outward and the non-release surface facing the non-peel surface. Then, both of them were laminated while continuously wound up, thereby producing a clean film for packaging according to the present invention. Next, a pair of the above-prepared clean films for packaging are prepared, and the peeled surfaces of the polyethylene layers having a thickness of 60 μm are overlapped with each other so that the left and right and lower peripheral edges are heat-sealed. Then, a three-sided heat seal portion was formed to produce a packaging bag according to the present invention. Next, using the packaging bag produced above,
Fill and package a photomask from the opening, and then
The opening was heat-sealed to produce a clean packaged product free of dust and dirt.

Example 5 A clean room, which was cleaned to a class of about 100 and maintained at a positive pressure, was co-extruded to a thickness of 40 μm.
m low-density polyethylene layer / 20 μm-thick adhesive low-density polyethylene layer / 15 μm-thick nylon layer /
Adhesive low-density polyethylene layer having a thickness of 20 μm / thickness of 40
A laminate having a layer structure of a low-density polyethylene layer having a thickness of μm was continuously wound and manufactured. Next, the above-prepared laminate is continuously peeled off between the adhesive low-density polyethylene layer having a thickness of 20 μm and the nylon layer having a thickness of 15 μm, and then the nylon having a thickness of 15 μm after peeling is removed. Layer / adhesive low-density polyethylene layer 20 μm thick / 60 μm thick
m of low-density polyethylene layer thickness of 60μ
The 60 μm-thick linear low-density polyethylene layer of the laminated body composed of the 60 μm-thick linear low-density polyethylene layer / the 20 μm-thick adhesive low-density polyethylene layer is opposed to the m low-density polyethylene layer surface. And, the adhesive low-density polyethylene layer having a thickness of 20 μm, which is the release surface, is superposed on the outside, and then both are laminated while being continuously wound up, so that the packaging clean film of the present invention is obtained. Manufactured. Next, a pair of the above-prepared clean films for packaging is prepared, and the peeled surfaces of the adhesive low-density polyethylene layer having a thickness of 5 μm are superposed on each other, and the peripheral edges of the left, right, and lower portions are formed. Heat seal the three-way heat
The sealing bag was formed to form a packaging bag according to the present invention. Next, using the packaging bag manufactured as described above, a photomask is filled and packaged through the opening, and thereafter, the opening is heat-sealed to provide a cleaner free of dust and dirt. Manufactured packaging products.

[0027]

As is apparent from the above description, the present invention focuses on the melt extrusion lamination method, the dry lamination method and the like.
Using ordinary lamination methods such as die coextrusion and inflation coextrusion, at least the first, second,
And, a laminated body is manufactured by sequentially laminating the third three base material layers, and then the first base material layer and the second
Or between the second base layer and the third base layer constituting the laminate, and then the second base layer, The third base material layer, and the first base material layer in order, and the outer surface and the inner surface are laminated so that the release surface is exposed to produce a laminated body, or
The second base material layer, the first base material layer, and the third base material layer are arranged in this order, and the outer surface and the inner surface are stacked so that the peeled surface is exposed to produce a multilayer body. As a result, the outer surface and the inner surface constituting the multilayer body are dust-free, exposing a clean surface, and further utilizing the surface to produce a packaging bag, and in the packaging bag, Filling and packaging electronic products, pharmaceutical liquid products, etc., can stably form the cleanliness of the inner and outer surfaces, and at the same time, easily form double bags. It is possible to produce packaging bags at low cost without wasting packaging materials, etc., and to efficiently manufacture packaging bags and the like for preventing dust and dirt from entering. It is possible to manufacture simple packaging products.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view illustrating an example of a layer structure of a packaging clean film according to the present invention.

FIG. 2 is a schematic cross-sectional view illustrating an example of a layer structure of a packaging clean film according to the present invention.

FIG. 3 is a schematic perspective view illustrating an example of the configuration of a packaging bag manufactured using the clean film for packaging according to the present invention.

FIG. 4 is a schematic sectional view taken along a line Y, Y ′ in FIG. 3;

FIG. 5 is a schematic cross-sectional view illustrating an example of a method for producing a clean film for packaging according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 1st base material layer 2 2nd base material layer 3 3rd base material layer 4 Laminated body 4a Laminated body 5 Peeling surface 6 Peeling surface 7 Outer side surface 8 Inner side surface 9 Multilayer body 10 Heat seal part 11 non release surface 12 backside A packaging chestnut - emission film A ₁ packaging chestnut - emission film A ₂ packaging chestnut - emission film B packaging bag P arrow P ₁ arrow

Continued on the front page F-term (reference) 3E064 BA22 BB03 BC18 BC20 3E086 AD01 BA04 BB51 BB90 CA31 4F100 AK06 AK46 AK63 AT00A AT00B AT00C BA03 BA06 BA10A BA10C BA21 DA01 EH15 EH20 EJ26 GB15 GB41 GB14 JD20JDL JJL

Claims (8)

[Claims] 1. At least a first, a second, and a third
The laminate obtained by sequentially laminating the three base material layers is peeled between the first base material layer and the second base material layer, and a second base material layer, a third base material layer, And a multi-layer body in which the first base material layer is arranged in order and the outer side surface and the inner side surface are superposed so as to expose the release surface.
Film. 2. At least a first, a second, and a third
The laminate obtained by sequentially laminating the three base material layers is peeled between the second base material layer and the third base material layer, and the second base material layer, the first base material layer, A packaging material comprising: a third base material layer in order, and an outer surface and an inner surface of which are laminated so as to expose a release surface.
Film. 3. The method according to claim 1, wherein the first base material layer and the third base material layer are made of a heat seal resin layer.
3. The clean film for packaging according to any one of items 1 to 2. 4. The method according to claim 1, wherein the second base material layer comprises a base film layer constituting a packaging bag.
The clean film for packaging according to any one of Items 1 to 3. 5. At least a first, a second, and a third
The laminate obtained by sequentially laminating the three base material layers is peeled between the first base material layer and the second base material layer, and a second base material layer, a third base material layer, And a packaging clean film composed of a multi-layered body in which the first base material layer is arranged in order and the outer side surface and the inner side surface are laminated so as to expose the release surface. The peeled surfaces constituting the inner surface of the first base material layer are superposed on each other, and then the outer peripheral edge is attached to the edge.
A packaging bag, wherein a bag is formed by forming a seal portion. 6. At least a first, a second, and a third
The laminate obtained by sequentially laminating the three base material layers is peeled between the second base material layer and the third base material layer, and the second base material layer, the first base material layer, And a cleaning film made of a multi-layer body composed of a third base material layer in order, and an outer surface and an inner surface of which are superposed so as to expose a release surface. 3 and the superposed surfaces constituting the inner surface of the base material layer are opposed to each other and then superposed.
A packaging bag, wherein a bag is formed by forming a seal portion. 7. The method according to claim 5, wherein the first base material layer and the third base material layer are made of a heat seal resin layer.
7. The packaging bag according to any one of Items 1 to 6. 8. The method according to claim 5, wherein the second base material layer comprises a base film layer constituting a packaging bag.
7. The packaging bag according to any one of items 1 to 7.