JP4810966B2 - Method for manufacturing irregular shaped pouch - Google Patents

Description

  The present invention relates to a method for manufacturing a modified pouch, and more specifically, streamlines the manufacturing process of an in-line bag making machine, improves yield by improving quality accuracy, and improves productivity by shortening the process. The present invention relates to a method for manufacturing a modified pouch having a low quality.

  In general, a pouch (bag) manufactured using a packaging material in which various plastic films are laminated has, for example, a two-side seal type as shown in FIG. 9 and a pillow as shown in FIG. There are types (back-bonded palm), three-side seal type, bottom gusset type, side gusset type, bottom gusset type standing pouch, etc., which are appropriately selected depending on the application.

  However, due to diversification of needs in recent years, there are uses that cannot meet the needs in the conventional simple pouch form, and various types of deformed pouches have been developed. For example, it is a deformed pouch provided with a refilling extraction function as shown in FIG. This pouch is mainly for packaging liquid products such as laundry detergents for clothes, softeners, hair washing agents such as shampoos and rinses, synthetic detergents for water around kitchens, bathrooms, toilets and toilets. This is a deformed pouch formed with a spout for facilitating taking out the contents, and a bottom gusset type standing pouch is frequently used. A consumer who has purchased a product using such a modified pouch opens from an opening notch or the like provided in the spout, and transfers the contents from the opening to a refill receiving container.

  Such a modified pouch manufacturing method uses a laminate (hereinafter referred to as a packaging material) in which at least printing is performed on a plastic substrate and a sealant layer is provided on the printed surface, as shown in FIG. A vertical sealing step (42) for finishing the pouch shape by aligning the surfaces of the sealant layers of the web-like (roll-up) surface member (41a) and the back surface member (41b) with a predetermined print pattern. The vertical seal cooling step (43), the horizontal seal step (44), the horizontal seal cooling step (45), the deformed portion sealing step (46), the deformed portion seal cooling step (47), and easy opening properties are imparted. Notch processing step (48), bottom slit processing step (49) for slitting excess part of bottom film with slit blade, corner R portion processing step (50) for adding R to bottom corner (corner), pouring function Shape Bag forming completed product (53) using an in-line bag making machine (40) that intermittently drives each step such as a step of cutting out a deformed part (51) and a side cutting process (52) for cutting continuous pouches individually ).

  In such a conventional bag making machine (40), the sealant layers of the packaging material are opposed to each other and supplied to the bag making machine, and the bag making machine (40) is processed by sealing, notching, punching, and the like. This is performed by vertical movement of each part (each processing performed by one vertical movement is called a shot and counted as one shot).

  However, in the manufacturing method using such a conventional bag making machine (40), each process is performed in each shot, but each process is performed in one shot, so a notch Misalignment of (7) and deformed part (1), bottom part (2), corner R part (3), etc. occurred, and many defective products were seen in the bag-making completed product (53). That is, a very large number of manufacturing processes are required, and the web-shaped packaging material (C) causes misalignment due to meandering and expansion / contraction due to tension between the processes.

  In order to solve such problems, the packaging material is transferred into a combined base that combines a plurality of bases each fitted with notches, corner R part processing, and deformed parts after sealing at the periphery. There has been proposed a manufacturing method in which the inside of the substrate is cut into pieces after two-shot combination processing. (For example, refer to Patent Document 1). However, such a method can certainly reduce defective products due to misalignment, but the fabrication of the combination base becomes complicated and expensive, and a combination base fixed by combining a plurality of bases is not possible. It is not easy to adjust the position of the notched part after installation, and preparations for mounting the base are difficult.

Prior art documents are shown below.
JP 2001-301063 A

  The present invention is intended to solve such problems of the prior art, streamline the manufacturing process of the in-line bag making machine, improve yield by improving quality accuracy, and improve productivity by shortening the process. It is an object of the present invention to provide a method for producing a modified pouch having stable quality and low cost.

The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 of the present invention comprises at least a web-shaped packaging material (C) having a sealant layer (13) on one side. Produced, and using the packaging material (C), in the part other than the corner R part (3) of the pouch (B), a part where the vertical width or / and the horizontal width of the pouch (B) is narrower than the respective full width is formed. A method for making a bag of a modified pouch (B), wherein the sealant layers (13) of the packaging material (C) are opposed to each other, and the peripheral edge portion other than the filling port (5) of the pouch (B) A punching die (A) with a notch (7), a top part (unshaped part) (1), a bottom part (2), and a cutting edge of the corner R part (3) of the bottom part (2) (A) ) punched with a further right and left side portions (4), continuous in the flow direction of the web Was cut to the side of the rear side of the front of the pouch of the inner (4), subsequently, is the method for producing a variant pouch, which comprises cutting the front side of the next pouch (B) (4) .

The method for producing a deformed pouch according to the present invention includes producing a web-shaped packaging material having a sealant layer on at least one surface, and using the packaging material, the vertical width of the pouch or / or at a portion other than the corner R portion of the pouch. And a method of bag-making a deformed pouch in which a portion having a width smaller than the entire width is formed, wherein the sealant layers of the packaging material are opposed to each other and the peripheral portion other than the filling port of the pouch is sealed. And punching with a punching die in which the punching blades of the notch, the top part (unshaped part), the bottom part, and the corner R part of the bottom part are set together, and the left and right side parts are continuous in the web flow direction. It was cut to the side of the rear side of the front of the pouch of the pouch, and subsequently, by cutting a front side of the next pouch, rationalization of manufacturing processes is performed, unnecessary slit device and corner punch apparatus Made, machine length is shortened. In addition, the cost of consumables related to the slit device and the corner punch device can be reduced. In terms of quality, the integration of processes eliminates meandering due to tension between processes, and displacement due to expansion and contraction, leading to improved quality. Furthermore, the punching die was easy and relatively inexpensive, and could be installed in existing bag making machines without significant modification.

  The manufacturing method of the unusual shape pouch of this invention is demonstrated in detail based on FIGS. In the following description, the case of manufacturing the deformed pouch of the bottom gusset type standing pouch shown in FIGS. 2 and 4 will be described as an example, but the manufacturing method of the deformed pouch of the present invention is illustrated in this specification. The present invention is not limited to the pouch having the shape described above, but can be applied to a deformed pouch having another shape that matches the gist of the present invention.

  FIG. 1 is a plan view showing one embodiment of a two-sided punching die (A) used in the method for producing a modified pouch (B) according to the present invention, and FIG. 2 is a production of the modified pouch (B) according to the present invention. FIG. 3 is a plan view showing an embodiment of the pouch (B) to be processed, and FIG. 3 is a plan view of notching / unshaped portion / bottom / corner R portion removal and side cutting in the manufacturing method of the shaped pouch according to the present invention. 4 is a plan view for explaining the process, FIG. 4 is a sectional view taken along line XX of FIG. 2, and FIG. FIG. 6 is a side sectional view showing one embodiment, and FIG. 6 is a side sectional view showing another embodiment of the layer structure of the packaging material (C) used in the method for producing the deformed pouch (B) according to the present invention. 7 is a process of one embodiment of the bag making machine (20) according to the method of manufacturing the modified pouch (B) according to the present invention. It is a low view.

  As shown in FIG. 2, the deformed pouch (B) according to the present invention is a web-shaped packaging material (C) having a sealant layer (13) on at least one side, and the packaging material (C) is used. The pouch (B) is formed in a portion where the vertical width and / or the horizontal width of the pouch (B) is narrower than the entire width in a portion other than the corner R portion (3) of the pouch (B), The narrow portion includes a curved portion.

  In the manufacturing process of the modified pouch (B) manufactured using the packaging material (C), it is necessary to first produce a web-shaped packaging material (C) having at least one sealant layer (13) on one side. It is. The material composition of the packaging material (C) is appropriately designed according to the type of contents, the internal volume, the distribution conditions, and the like.

  A method for producing a modified pouch (B) using the packaging material (C) uses a bag-making machine (20) for a modified pouch, as shown in FIG. In order to make the surface of the sealant layer (13) of the back surface member (21b) face each other by matching the predetermined printing pattern and finish the pouch shape, the peripheral portion other than the filling port (5) of the pouch (B) is sealed. To do. Specifically, the bottom (2) is sealed in the vertical sealing step (22), the vertical sealing portion is cooled and completely sealed in the vertical sealing cooling step (23), and then the horizontal sealing step (24). Then, the left and right side portions (4, 4) are sealed, and the horizontal seal portion is similarly cooled and completely sealed in the horizontal seal cooling step (25). Further, in order to form the pouring function in the deformed portion sealing step (26), the top portion (deformed portion) (1) is sealed, and the deformed portion (1) is cooled in the cooling step (27). Seal completely.

  Next, as shown in FIG. 1, separately prepared notches (7), top part (deformed part) (1), bottom part (2), and cutting edge of corner R part (3) of the bottom part (2) Using the two-sided cutting die (A) set in one, the notch (7), the top (unshaped part) (1), the bottom (2), the corner R part (3) of the bottom (2) Are simultaneously punched in the punching step (28). In this way, the web-like shape can be obtained by simultaneously punching out the notch (7), the top part (deformed part) (1), the bottom part (2), and the corner R part (3) of the bottom part (2) in one shot and one process. Due to the meandering and expansion / contraction of the packaging material (C) due to the tension between each process, misalignment of the notch (7) and the deformed part (1), the bottom part (2) and the corner R part (3) is prevented. This makes it possible to eliminate defective products (30).

  Finally, the left and right side portions (4) are sequentially cut in the side portion cutting step (29), whereby a bag-making completed product (30) is obtained. At this time, as shown in FIG. 3, the side (4) cutting is performed by first cutting the side (4) on the rear side of the pouch before the continuous pouch in the flow direction of the web. Cut the front side (4) of the pouch (B). That is, the cutting is performed twice. Usually, the web-like packaging material (C) always has a displacement of the punching blade and the cutting due to meandering and expansion / contraction due to tension between each process, so that the punching is the sealing part of the side part (4). It is preferable to provide a “bump” between successive side seals so as not to enter.

  As described above, the method for producing a modified pouch (B) according to the present invention produces at least a web-shaped packaging material (C) having a sealant layer (13) on one side, and uses the packaging material (C). The pouch (B) is formed into a pouch (B) in which the vertical width and / or horizontal width of the pouch (B) is narrower than the entire width of the pouch (B) other than the corner R portion (3). The sealant layer (13) of the packaging material (C) is opposed to each other, the peripheral portion other than the filling port (5) of the pouch (B) is sealed, the notch (7), the top portion ( Punching using a punching die in which the punching blades of the deformed part) (1), the bottom part (2), and the corner R part (3) of the bottom part (2) are set together, and the left and right side parts (4) Using the inline bag making machine (20) that cuts sequentially, the finished bag making product (30) For the bottom slit processing of the step (49) in which the manufacturing process is rationalized and the excess portion of the film on the bottom (2) used in the conventional bag making machine (40) is slit with a slit blade. This eliminates the need for the slitting device and the corner punching device in the corner R section machining step (50) for attaching R to the corner (corner) at the bottom, thereby shortening the machine length. In addition, the cost of consumables related to the slit device and the corner punch device can be reduced. In terms of quality, the integration of processes eliminates meandering due to tension between processes, and displacement due to expansion and contraction, leading to improved quality. Further, the punching die can be easily manufactured at a relatively low cost, and can be installed in the existing bag making machine (40) without significant modification.

  As shown in FIG. 4, the modified pouch (B) according to the present invention matches the surfaces of the sealant layer (13) of the front surface member (21a) and the back surface member (21b) with a predetermined printing pattern. In the case of a standing gusset type standing pouch shape, the bottom tape (2a) for the bottom portion is interposed in a gusset shape, and the bottom tape (2a) is formed in the same manner as the peripheral portion other than the filling port (5) of the pouch (B). ) Is also obtained by sealing.

  In addition, the shape of the pouch that can use the spout of the present invention is a pillow type (back bonding palm), a two-side seal type, a three-side seal type, a bottom gusset type, a side gusset type, a standing pouch, etc. The spout of the present invention can be mounted as long as it is a pouch having an edge portion to which the spout can be mounted even if it is a modified pouch.

  Next, the layer structure of the packaging material (C) used for the modified pouch (B) according to the present invention will be described in detail.

  For example, as shown in FIG. 5, the packaging material (C) is composed of a laminated film obtained by laminating at least a base film layer (10) and a sealant layer (13). Depending on the required quality, as shown in FIG. 6, the layer configuration of the laminated film is appropriately selected and determined, for example, a barrier layer (12) is provided between the base film layer (10) and the sealant layer (13).

  Therefore, the outermost base film layer (10), the innermost sealant layer (13), and the barrier layer (12) necessary for protecting the contents, which constitute the laminated film, are described in detail. Explained.

As the base film layer (10), since it becomes a base material constituting the deformed pouch (B), mechanical strength (tensile strength, burst strength, face bending strength, impact strength, abrasion resistance, etc.) , Barrier properties (moisture-proof, waterproof, air-proof, incense retention, light-shielding, etc.), stability (water resistance, light resistance, chemical resistance, organic solvent resistance, oil resistance, cold resistance, weather resistance, etc.) , Workability (packaging workability, machine adaptability, etc.), convenience (openability, easy disposal, etc.), merchantability (transparency, smoothness, printability, etc.), economy (price, productivity, transportation storage) For example, a polyester film such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polypropylene ( P), polyolefins such as polystyrene (PS), nylon-6, polyamide (PA, such as nylon-66), polycarbonate (PC), polyacrylonitrile (PAN), a non-stretched or stretched films such as polyimide (PI).

  Among them, in order to provide the spout for the modified pouch (B) of the present invention, the base material can be opened from the notch (7) imparting easy-opening property more stably and linearly. The film layer (10) or one layer of the base film is preferably made of a film having linear tearability. Examples of the substrate film having linear tearability include a uniaxially stretched film stretched in one direction and a biaxially stretched film in which the longitudinal and lateral stretch ratios are changed. In the modified pouch (B) of the present invention, the linear tearing property is obtained. A biaxially stretched film is preferred.

  Generally, a plastic film is roughly classified into a stretched film and an unstretched film. The stretched film is oriented by stretching the plastic film in two longitudinal and / or horizontal directions while heating the plastic film to a temperature below the melting point. An unstretched film is an unstretched film that has not been stretched, and has no molecular chain orientation and free molecular motion, and can be bonded by heat melting (heat sealing). The molecular chains of the stretched film are oriented in one direction in uniaxial stretching and in the plane direction in biaxial stretching, and the physical properties of the unstretched film can be improved. In addition, stretching increases stiffness (rigidity), transparency, tensile strength, and shrinkage, and improves gloss, moisture resistance, and barrier properties, but decreases elongation and tear strength.

  As the base film having such a linear tear property, a biaxially stretched polyethylene terephthalate film (OPET), a biaxially stretched polyamide film (ON), or the like is often used. The substrate film having linear tearability is in at least one of the longitudinal (longitudinal) direction [MD (machine direction) direction] and the transverse (TD (transverse direction) direction) direction of the film. It has a performance (easy tearing property) that can be easily torn linearly.

  The biaxially stretched polyethylene terephthalate film (OPET), which is a base film having linear tearability, is, for example, polybutylene terephthalate containing 5 to 20% by weight of polytetramethylene glycol (PTMG) units having a weight average molecular weight of 600 to 4000. Biaxially stretched polyethylene terephthalate film (OPET) manufactured using a raw material in which (modified PBT) and polyethylene terephthalate (PET) are mixed at a ratio of PET / modified PBT = 70/30 to 95/5 (weight ratio). ).

  Specifically, polyethylene terephthalate (PET) was obtained by a known production method, that is, an ester exchange reaction method from dimethyl terephthalate and ethylene glycol, or a direct esterification method from terephthalic acid and ethylene glycol. Thereafter, it may be obtained by melt polymerization or further solid phase polymerization, and may also be obtained by copolymerizing other components. Other copolymer components include isophthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, 5-sodium sulfoisophthalic acid, succinic acid, adipic acid, sebacic acid, dodecanedioic acid, dimer acid, maleic anhydride, maleic acid Acids, fumaric acid, itaconic acid, citraconic acid, mesaconic acid, dicarboxylic acids such as cyclohexanedicarboxylic acid, 4-hydroxybenzoic acid, ε-caprolactone, oxycarboxylic acids such as lactic acid, 1,3-propanediol, 1,6- Examples thereof include glycols such as hexanediol and cyclohexanedimethanol, and polyfunctional compounds such as trimellitic acid, trimesic acid, pyromellitic acid, trimethylolpropane, glycerin, and pentaerythritol.

The polybutylene terephthalate (modified PBT) may be obtained by polycondensation by adding PTMG in the PBT polymerization step, or by melting and kneading PBT and PTMG with an extruder. There may be.

  Other polymers such as polyethylene naphthalate and polycyclohexylenedimethylene terephthalate can be mixed in the raw resin of the biaxially stretched polyethylene terephthalate film (OPET).

  In order to produce the biaxially stretched polyethylene terephthalate film (OPET), first, for example, a mixture of modified PBT and PET is put into an extruder, heated and melted, and then extruded into a sheet form from a die orifice of a T die. An unstretched sheet is produced. The sheet extruded from the die orifice of the T-die is cooled by being closely attached to a cooling drum by an electrostatic application casting method or the like, and then, at a temperature of 90 to 140 ° C., 3.0 to 5. The film is stretched at a magnification of 0 and further heat treated at a temperature of 210 to 245 ° C. to obtain a modified polyethylene terephthalate film. As the biaxial stretching method, either a tenter simultaneous biaxial stretching method or a sequential biaxial stretching method using a roll and a tenter may be used. Further, a modified polyethylene terephthalate film may be produced by biaxial stretching by a tubular method.

  Next, as the biaxially stretched polyamide film (ON) which is the substrate film having linear tearability, for example, aliphatic polyamide (PA) and polymetaxylene adipamide (MXD6) are PA / MXD6 = A biaxially stretched polyamide film (ONy) produced using raw materials mixed at a ratio of 80/20 to 95/5 (weight ratio) can be mentioned.

  Specifically, PA includes aliphatic polyamides such as nylon 6 (N6), nylon 66 (N66), nylon 46 (N46), nylon 610 (N610), nylon 12 (N12). In addition to a homopolymer, it includes a copolymer containing 90 mol% or more of each unit.

  MXD6 contains 90 mol% or more of structural units produced by polycondensation reaction of metaxylylenediamine and adipic acid, and includes homopolymers or copolymers containing 10 mol% or less of other components.

  The biaxially stretched polyamide film (ON) uses, for example, a mixture of PA and MXD6, and after cooling with a cooling drum, is subjected to water immersion treatment with hot water of 40 to 60 ° C., and at a stretching temperature of 150 to 220 ° C. It can manufacture by extending | stretching as a draw ratio 3-4 times in the vertical direction and a horizontal direction.

  The thickness of the base film having linear tearability may be a thickness that can be kept to the minimum necessary for strength, rigidity, etc. as a base material, and if it is too thick, processing failure at the time of sealing or punching processing In addition, there is a drawback that the material price is high. On the other hand, if it is too thin, the strength, rigidity and the like are lowered, which is not preferable. In the present invention, the thickness of the base film is preferably in the range of about 12 to 30 μm for the reasons described above.

Next, as a sealant layer (13), what is necessary is just the film comprised by the innermost layer of a laminated | multilayer film, and what can be sealed by heat sealing | fusion, and uses the sealant film which consists of a well-known thermoplastic resin. be able to. Specifically, for example, low density polyethylene resin (LDPE), medium density polyethylene resin (MDPE), high density polyethylene resin (HDPE), linear low density polyethylene resin (L-LDPE), polypropylene resin (PP), Ethylene-propylene copolymer (EP), ethylene-α-olefin copolymer polymerized using a metallocene catalyst, ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene -A film made of a methacrylic acid ester copolymer, an ethylene-acrylic acid ester copolymer, an ionomer resin, an ethylene-vinyl acetate copolymer (EVA) or the like can be used, but polymerization is performed using a metallocene catalyst. The ethylene-α-olefin copolymer has a narrow molecular weight distribution, Since the polymerization ratio is also stable, it is excellent in low temperature heat sealability and hot sealability. The thickness of the sealant film is preferably in the range of about 30 to 200 μm in consideration of strength and processability (such as lamination and bag making). If the thickness is less than 30 μm, the sealing performance of the pouch may be poor, the sealing strength is insufficient, the drop impact property is inferior, and the bag may be broken. On the other hand, when the thickness exceeds 200 μm, the heat sealing time becomes longer, and the bag-making workability becomes worse.

  Next, a barrier layer (12) may be provided between the base film layer (10) and the sealant layer (13) depending on the contents stored in the modified pouch (B) of the present invention. (12) is usually provided when the base film layer (10) and the sealant layer (13) alone cannot sufficiently fulfill the function of resistance to oxygen gas, water vapor, light, etc. as a pouch. Is. In addition, an intermediate layer (not shown) may be provided between the barrier layer (12) and the sealant layer (13) for the purpose of improving strength, rigidity, and the like.

  As said barrier layer (12), the gas barrier film which provided the gas barrier layer (not shown) in the gas barrier resin film or the base film can be used.

  As a gas barrier film in which a gas barrier layer is provided on the gas barrier resin film or the base film, for example, typical examples of the gas barrier resin film include ethylene-vinyl alcohol copolymer film (EVOH), polyvinyl alcohol film (PVA), ethylene- Examples thereof include films such as vinyl acetate copolymer (EVA) saponified products, and laminated films in which one or more of these films are combined. Next, as a typical example of a gas barrier film in which a gas barrier layer is provided on a base film, a coating film obtained by coating polyvinylidene chloride on a film such as polyethylene terephthalate (PET), polyamide (PA), or polypropylene (PP), Examples thereof include a laminated film obtained by laminating an aluminum foil, a deposited film provided with a deposited thin film layer of aluminum metal and inorganic oxide (silicon oxide, aluminum oxide, etc.), and a laminated film obtained by combining one or more of these films. Among these, in consideration of recent environmental problems, an inorganic oxide vapor-deposited film obtained by vapor-depositing the inorganic oxide that can be easily disposed of after use is preferable.

  The support film of the inorganic oxide vapor-deposited film is not particularly limited, but a single film and various laminated films can be used in consideration of processability and the like.

  For example, polyesters such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyolefins such as polypropylene (PP) and polystyrene (PS), polyamides such as nylon-6 and nylon-66 Non-stretched or stretched films such as (PA), polycarbonate (PC), polyacrylonitrile (PAN), and polyimide (PI).

  Among these, from the viewpoint of tearability, strength, cost, etc., as described above, a biaxially stretched polyethylene terephthalate film (OPET) or a biaxially stretched polyamide film (OPET) having a linear tear property arbitrarily stretched in the biaxial direction ( ON) is preferred.

  As the vapor-deposited thin film layer of the inorganic oxide, it is basically possible to use a metal oxide such as silicon, aluminum, magnesium, calcium, potassium, tin, sodium, boron, titanium, lead, zirconium. , Oxides such as yttrium, or a mixture thereof.

  In general, it is preferable to use silicon oxide or aluminum oxide from the viewpoint of transparency, physical properties, and productivity.

  As a method for forming such an inorganic oxide vapor-deposited thin film layer, a vacuum vapor deposition method, a sputtering method, or the like can be used. However, in view of productivity, production cost, etc., the vacuum vapor deposition method is preferable.

  The vacuum deposition method is roughly classified into three types according to the form of the body to be vapor-deposited. 1) Batch method: vapor deposition method of molded product, 2) take-up type semi-continuous method: roll film (web) After unwinding, vapor deposition, and winding in a vacuum system, return to the air system again and take out the vapor deposition product. 3) Unwinder (unwinding device) for roll film (web) ) And a rewinder (winding device) are arranged in the atmospheric system, and a vapor deposition drum and an evaporation source are arranged in a vacuum system to deposit an evaporating substance on a roll film (web). There is a method called -air method.

  When evaporating a vaporized material on a roll film (web), a take-up semi-continuous method is particularly widespread. Describe the structure.

  First, the constituent elements are a roll film (web), an evaporation source, an evaporation substance, a vapor deposition drum, a vacuum system, an unwinder (unwinding device), a rewinder (winding device), a guide roll, and the like.

  Next, the outline of the work process will be described. First, as a preparatory step, the door of the vacuum vapor deposition device is opened, the roll film (web) is set in the unwinder (unwinding device), and it is arranged between the unwinder and the vapor deposition drum. The roll-shaped film (web) travels to the vapor deposition drum through the guide roll that is being wound, and is further wound around the rewinder (winding device) via the guide roll disposed between the rewinder (winding device). And the preparation for vapor deposition of the evaporating substance on the roll film (web) is completed.

  Next, the door of the vacuum vapor deposition apparatus is closed, and the vacuum vapor deposition chamber divided by the vacuum suction constant pressure chamber and the partition wall in the vacuum vapor deposition apparatus is set to a predetermined vacuum environment by a vacuum pump. The roll-like film (web) is fed out and evaporated to the roll-like film (web) traveled through a guide roll by heating and evaporating an evaporation substance from an evaporation source disposed at the lower part of the vapor deposition drum. Vapor deposition (web).

  Since the vapor deposition drum is cooled, the evaporated film is recrystallized and fixed to the roll film (web), and the roll film (web) deposited via the guide roll on the rewinder side is attached to the rewinder. It is wound up.

  The internal structure of the vacuum deposition apparatus is divided into a vacuum suction constant pressure chamber and a vacuum deposition chamber by partition walls. The vacuum suction constant pressure chamber is composed of an unwinder, guide roll, tension control device, speed control device, position control device, and vapor deposition drum. Some rewinders are arranged.

In the vacuum deposition chamber, a part of the deposition drum, an evaporation source, and a heating device thereof are arranged. The vacuum suction constant pressure chamber has a degree of vacuum of 1 by a vacuum pump arranged around the vacuum deposition apparatus main body. × 10 ⁰ MPa about, the vacuum deposition chamber provided via the partition wall is set to a degree 1 × 10 ^-2 MPa (SI units).

Since the chamber is divided into two partitions, impurities (dust) such as gas generated from the roll-shaped film (web) in the vacuum suction constant pressure chamber have a bad influence on the deposition in the vacuum deposition chamber. Few.

  On the contrary, the radiant heat from the evaporation source arranged in the vacuum deposition chamber has little influence on the vacuum suction constant pressure chamber, so that the influence on the roll film (web) is small.

  The vacuum deposition method is also a heating method: 1) Indirect resistance method, 2) Direct resistance heating method (wire feed method), 3) High frequency induction heating method, 4) Electron beam method (Electoron Beam, EB method for short) 4 There are two methods, but when the evaporated substance uses an insulating metal oxide such as silicon oxide or aluminum oxide, the electron beam method with high energy conversion efficiency is optimal.

  The winding type electron beam vacuum deposition method is a method in which an evaporating substance such as silicon oxide or aluminum oxide is directly irradiated with an electron beam, and the surface of the evaporating substance is scanned to heat the evaporating substance surface. In this method, energy is converted at a portion where the beam hits to evaporate the evaporated substance.

  Although the thickness of this vapor deposition thin film layer is suitably selected by the end use of a vapor deposition film, it is preferable to exist in the range of 5-400 nm.

  If the film thickness of the deposited thin film layer is less than 5 nm, a uniform film cannot be provided. Therefore, sufficient oxygen gas barrier properties and water vapor barrier properties cannot be obtained. If the film thickness exceeds 400 nm, flexibility is lost, and bending and pulling are not possible. It is not preferable because cracks and peeling easily occur in the deposited thin film layer due to external factors such as.

  In addition, a thermally crosslinkable primer coat layer (not shown) is formed between the base film having linear tearability such as the biaxially stretched polyethylene terephthalate film (OPET) or the biaxially stretched polyamide film (ON) and the deposited thin film layer. A gas barrier film having improved adhesion between the base film and the deposited thin film layer may be used.

Examples of the heat-crosslinkable primer coat layer include, for example, a general formula M (OR) n (wherein M: a metal element such as Si, Zr, Ti, Al, or an alkyl group such as R: CH ₃ , C ₂ H _5). , N: oxidation number of metal element) or a hydrolyzate of the metal alkoxide, or a general formula, R′Si (OR) ₃ (R ′: alkyl group, vinyl group, epoxy group, glycid A composite of at least one of a trifunctional organosilane represented by R: an alkyl group or the like or a hydrolyzate of the organosilane with a polyol compound and an isocyanate compound can also be used. .

Or a trifunctional organosilane represented by a general formula, R′Si (OR) ₃ (wherein R ′: amino group, isocyanate group, sulfoxide group, etc., R: alkyl group, etc.), a polyol compound, and an isocyanate. It may be composed of a compound with a compound.

Next, the metal alkoxide has a general formula, M (OR) n (wherein M: a metal element such as Si, Zr, Ti, Al, R: an alkyl group such as CH ₃ or C ₂ H ₅ , n: For example, an alkoxysilane compound, a zirconium alkoxide compound, a titanium alkoxide compound, or the like can be used.

Specifically, tetramethoxysilane [Si (O—CH ₃ ) ₄ ], tetraethoxysilane [Si (O—C ₂ H ₅ ) ₄ ], tetraisopropoxysilane [Si (O—iso—C ₃ H _{7). 4} ], tetrabutoxysilane [Si (O—C ₄ H ₉ ) ₄ ], dimethyldimethoxysilane [(H ₃ C) ₂ Si (O—CH ₃ ) ₂ ], trimethoxymethylsilane [H ₃ CSi (O -CH _{3) 3],} dimethyldiethoxysilane _{[(H 3 C) 2 Si} (O-C 2 H 5) 2] alkoxysilane compounds such as tetramethoxysilane zirconium _{[Zr (O-CH 3)} 4], tetra Ethoxyzirconium [Zr (O—C ₂ H ₅ ) ₄ ], tetraisopropoxyzirconium [Zr (O-iso-C ₃ H ₇ ) ₄ ], tetrabutoxyzirconium [Zr (O—C ₄ H ₉ ) ₄ ] and the like Zirconi Arm alkoxide compounds, tetramethoxysilane titanium _{[Ti (O-CH 3)} 4], tetraethoxysilane titanium _{[Ti (O-C 2 H} 5) 4], tetraisopropoxy titanium [Ti (O-iso-C 3 H 7) ₄ ] and titanium alkoxide compounds such as tetrabutoxytitanium [Ti (O—C ₄ H ₉ ) ₄ ].

In addition, the metal alkoxide has a general formula, M (OR) n (wherein M: a metal element such as Si, Zr, Ti, Al, R: an alkyl group such as CH ₃ or C ₂ H ₅ , n: a metal It may be a hydrolyzate of a compound represented by the oxidation number of the element.

Next, the trifunctional organosilane has a general formula R′Si (OR) ₃ (wherein R ′: alkyl group, vinyl group, epoxy group, glycidoxypropyl group, R: alkyl group, etc.) ), And examples thereof include ethyltrimethoxysilane, vinyltrimethoxysilane, glycidoxypropyltrimethoxysilane, glycidoxytrimethoxysilane, and epoxycyclohexylethyltrimethoxysilane. These compounds may be used alone or in a mixture of two or more. Further, hydrolysis of a compound represented by the above general formula, R′Si (OR) ₃ (wherein R ′: alkyl group, vinyl group, epoxy group, glycidoxypropyl group, R: alkyl group, etc.) It may be a thing.

Further, the trifunctional organosilane is a compound represented by the general formula, R′Si (OR) ₃ (wherein R ′: amino group, isocyanate group, sulfoxide group, etc., R: alkyl group, etc.). For example, γ-amino-propyltrimethoxysilane, γ-amino-propyltriethoxysilane, γ-isocyanatopropyltrimethoxysilane, γ-isocyanatopropyltriethoxysilane, and the like can be mentioned. It may be used in a mixture of two or more. Further, it may be a hydrolyzate of a compound represented by the above general formula, R′Si (OR) ₃ (wherein R ′: amino group, isocyanate group, sulfoxide group, etc., R: alkyl group, etc.). .

  Next, a polyester polyol or an acrylic polyol can be used as the polyol compound constituting the thermally crosslinkable primer coat layer.

  The polyester polyol is terephthalic acid, isophthalic acid, phthalic acid, methylphthalic acid, trimellitic acid, pyromellitic acid, adipic acid, sebacic acid, succinic acid, maleic acid, fumaric acid, tetrahydrophthalic acid, methyltetrahydrophthalic acid, hexa Acid raw materials for hydrophthalic acid and reactive derivatives thereof, ethylene glycol, propylene glycol, 1,3-butanediol, 1,4-hexanediol, diethylene glycol, dipropylene glycol, 1,4-cyclohexanedimethanol, neopentyl Terminals of polyester resins obtained by known production methods from alcohol raw materials such as glycol, bishydroxyethyl terephthalate, trimethylol methane, trimethylol propane, glycerin and pentaerythritol Those having 2 or more hydroxyl groups (hydroxyl groups), are those which react with the isocyanate groups of the isocyanate compound added later.

  Next, the acrylic polyol has a hydroxyl group at the terminal out of a polymer compound obtained by polymerizing an acrylic acid derivative monomer or a polymer compound obtained by copolymerization with an acrylic acid derivative monomer and other monomers. It is made to react with the isocyanate group of the isocyanate compound added later.

  Among them, an acrylic polyol obtained by polymerizing an acrylic acid derivative monomer such as ethyl methacrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, or hydroxybutyl methacrylate alone, or an acrylic polyol copolymerized by adding other monomers such as styrene is preferably used. .

  In consideration of reactivity with an isocyanate compound, the hydroxyl value is preferably between 5 and 200 (KOHmg / g).

  Next, the blending ratio of the polyol compound and the trifunctional organosilane is preferably in the range of 1/1 to 100/1 by weight ratio, more preferably in the range of 2/1 to 50/1. It is.

  The dissolving and diluting solvent is not particularly limited as long as it can be dissolved and diluted. For example, esters such as ethyl acetate and butyl acetate, alcohols such as methanol, ethanol and isopropyl alcohol, and ketones such as methyl ethyl ketone. In addition, aromatic hydrocarbons such as toluene and xylene can be used alone or arbitrarily blended.

  However, since an aqueous solution such as hydrochloric acid or acetic acid is sometimes used to hydrolyze the trifunctional organosilane, a solvent in which isopropyl alcohol or the like and a polar solvent, ethyl acetate, are arbitrarily mixed is used as a co-solvent. More preferably.

In addition, a reaction catalyst may be added to accelerate the reaction when the trifunctional organosilane is blended. The catalyst to be added is a tin compound such as tin chloride (SnCl ₂ , SnCl ₄ ), tin oxychloride (SnOHCl, Sn (OH) ₂ Cl ₂ ), tin alkoxide from the viewpoint of reactivity and polymerization stability. Is preferred. These catalysts may be added directly at the time of compounding, or may be added after being dissolved in a solvent such as methanol. If the addition amount is too small or too large, the catalytic effect cannot be obtained, and therefore the molar ratio is preferably within a range of 1/10 to 1/10000 with respect to the trifunctional organosilane, more preferably 1 More preferably within the range of / 100 to 1/2000.

  Next, the isocyanate compound is added in order to improve the adhesion to the base film or the deposited thin film layer by a urethane bond formed by reacting with a polyester polyol or an acrylic polyol. Acts as

  As such isocyanate compounds, monomers such as aromatic tolylene diisocyanate, diphenylmethane diisocyanate, aliphatic xylylene diisocyanate, hexamethylene diisocyanate, and isophorone diisocyanate, and polymers and derivatives thereof are used. Are used alone or as a mixture.

  The blending ratio of the polyol compound and the isocyanate compound is not particularly limited, but if the isocyanate compound is too small, curing may be poor, and if it is too much, blocking or the like occurs and there is a problem in processing. . Therefore, the mixing ratio of the polyol compound and the isocyanate compound is preferably 50 times or less of the isocyanate group derived from the isocyanate compound than the hydroxyl group derived from the polyol compound. Particularly preferred is a case where an isocyanate group and a hydroxyl group are mixed in an equal amount, and a known method can be used as the mixing method.

Next, as a method of preparing a primer solution for forming the heat-crosslinkable primer coat layer, a composite mixed solution in which trifunctional organosilane, a polyol compound and an isocyanate compound are mixed at an arbitrary mixing ratio is prepared. It is formed by coating on a substrate film.

  As a method of making the composite mixed solution, a method of mixing a trifunctional organosilane and a polyol compound, adding a solvent and a diluent, diluting to an arbitrary concentration, and then mixing with an isocyanate compound to make a composite mixed solution, Alternatively, a method in which a trifunctional organosilane is mixed in a solvent in advance and then a polyol compound is mixed and then diluted to an arbitrary concentration by adding a solvent and a diluent, and then an isocyanate compound is added to make a composite mixed solution. and so on.

  Various additives such as tertiary amines, imidazole derivatives, carboxylic acid metal chlorides, quaternary ammonium salts, quaternary phosphonium salts, and other accelerators, phenols, sulfurs, and phosphites It is also possible to add antioxidants, leveling agents, flow preparation agents, catalysts, crosslinking reaction accelerators, fillers and the like as necessary.

  Next, the thickness of the thermally crosslinkable primer coat layer is not particularly limited as long as a uniform coating film can be formed, but the dry film thickness is preferably in the range of 5 to 300 nm. If the thickness is 5 nm or less, a uniform coating cannot be formed, and stable adhesion cannot be obtained. If the thickness is 300 nm or more, physical properties are reached, which is not economical.

  Next, as a method of forming the heat-crosslinkable primer coat layer, for example, a known gravure roll coating method, reverse roll coating method, bar coating method, dropping method or the like can be used.

  In order to improve the adhesion, the surface of the base film is pretreated by a known method such as corona discharge treatment, glow discharge treatment, low temperature plasma treatment, flame treatment, chemical treatment, solvent treatment, etc. There is also. In addition, various known additives and stabilizers such as antistatic agents, ultraviolet absorbers, plasticizers, and lubricants can be used on the front and back surfaces of the base film.

  Next, in order to further improve the gas barrier property of the inorganic oxide vapor-deposited film, a gas barrier coating layer (not shown) may be laminated on the inorganic oxide vapor-deposited layer. As the gas barrier coating layer, for example, a material comprising at least one of a water-soluble polymer and (a) one or more metal alkoxides and hydrolysates thereof or (b) tin chloride is used. Can do.

  The gas-barrier coating layer is provided on the vapor-deposited thin film layer in order to prevent various secondary damages in the post-process of the vapor-deposited thin-film layer and to provide higher gas barrier properties. And depositing a coating agent mainly comprising an aqueous solution or a water / alcohol mixed solution containing at least one of a water-soluble polymer and (a) one or more metal alkoxides and hydrolysates thereof or (b) tin chloride. The gas barrier coating layer is formed by coating on the thin film layer.

  For example, a solution in which a water-soluble polymer and tin chloride are dissolved in an aqueous (aqueous solution or water / alcohol mixed solution) solvent, or a solution in which a metal alkoxide is directly or previously hydrolyzed and mixed. Is formed by coating the vapor-deposited thin film layer and drying by heating.

Examples of the water-soluble polymer include polyvinyl alcohol (PVA), polyvinyl pyrrolidone, starch, methyl cellulose, carboxymethyl cellulose, and sodium alginate.

  In particular, polyvinyl alcohol (PVA) is preferable because of its excellent gas barrier properties. The polyvinyl alcohol (PVA) here is generally obtained by saponifying polyvinyl acetate.

  Examples of the polyvinyl alcohol (PVA) include fully saponified polyvinyl alcohol (PVA) in which only a few percent of acetic acid groups remain from so-called partially saponified polyvinyl alcohol (PVA) in which several tens of percent of acetate groups remain. There is no particular limitation.

  The tin chloride is stannous chloride, stannic chloride, or a mixture thereof, and anhydrides and hydrates of these tin chlorides can also be used.

  Next, as the metal alkoxide, tetraethoxysilane, triisopropoxyaluminum and the like that are relatively stable in an aqueous solvent after hydrolysis are preferable.

  Furthermore, known additives such as isocyanate compounds, silane coupling agents, or dispersants, stabilizers, viscosity modifiers, colorants and the like are added to the coating agent as necessary, as long as the gas barrier properties are not impaired. Can be added.

  As the isocyanate compound added to the coating agent, those having two or more isocyanate groups in the molecule are preferable.

  Examples of such isocyanate compounds include monomers such as tolylene diisocyanate, triphenylmethane triisocyanate, and tetramethylxylene diisocyanate, and polymers and derivatives thereof.

  The gas barrier coating layer is formed on the deposited thin film layer by applying a known method such as a gravure coating method, reverse roll coating method, air knife coating method, etc., followed by heating and drying.

  In this case, the thickness of the gas barrier coating layer is preferably in the range of 0.01 to 50 μm after drying. When the thickness after drying is 0.01 μm or less, sufficient gas barrier properties cannot be obtained, and when it is 50 μm or more, the coating film is liable to crack and adversely affects the gas barrier.

  Next, the intermediate layer provided for the purpose of improving strength and rigidity between the barrier layer (12) and the sealant layer (13) is not particularly limited as long as the strength and rigidity can be improved. Are, for example, polyesters such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyolefins such as polypropylene (PP) and polystyrene (PS), nylon-6, nylon-66, etc. Non-stretched or stretched films such as polyamide (PA), polycarbonate (PC), polyacrylonitrile (PAN), and polyimide (PI) can be used.

Next, as shown in FIG. 5, a method of laminating the base film layer (10) and the sealant layer (13) constituting the packaging material (C), or as shown in FIG. The film layer (10), the barrier layer (12), and the sealant layer (13) are sequentially laminated by, for example, a dry lamination method, a non-solvent dry lamination method, a hot melt lamination method, an extrusion lamination method, A known method such as a sandwich lamination method using an extrusion lamination method can be appropriately used.

  First, the dry lamination method is a method of laminating one film and the other film through an adhesive layer (11) made of an adhesive, and includes three sections of a coating unit, a drying device, and a nip roller unit. , Unwinding, winding, and tension control system.

  The coating portion generally employs a gravure roll coating method or a reverse roll coating method.

  As the adhesive used in the dry lamination method, laminate adhesives such as polyurethane, polyacrylic, polyester, epoxy, polyvinyl acetate, cellulose, and the like can be generally used.

  As the lamination adhesive, a solvent-type adhesive or a solvent-free adhesive is used. However, when a solvent-free adhesive is used, a drying apparatus is unnecessary, and in particular, a non-solvent dry lamination method and I'm calling.

  In the hot melt lamination method, one film and the other film are immediately laminated through a hot melt adhesive composed of a heat-melted ethylene-vinyl acetate copolymer (EVA), a wax, a tackifier, and the like. It is a method to do.

  In the extrusion lamination method, a thermoplastic resin such as a low density polyethylene resin (LDPE) is heated, melted in a cylinder called a cylinder, extruded by applying pressure with a screw, and a T die at the tip of the cylinder. This is a method of extruding the thermoplastic resin dissolved in the form of a curtain from a thin slit to form a film and then directly laminating it on the substrate film.

  At this time, sandwich lamination using the extrusion lamination method to laminate one film and the other film using a thermoplastic resin such as low density polyethylene resin (LDPE) or polypropylene resin (PP) as an adhesive. A method can also be used.

  The packaging material (C) can be provided with a printed layer (not shown) in addition to the above-described configuration. Furthermore, an anchor coat layer (not shown) may be provided on the surface of the base film layer (10) for the purpose of improving the adhesion between the base film layer (10) and the printing layer.

  First, when providing a printing layer on the base film layer (10), the printing surface of the base film layer (10) can be printed on either the front or back side, but when printing on a general plastic film bag Similarly, it is preferable to provide a print layer with a beautiful pattern on the inner surface of the base film layer (10) in consideration of the friction resistance and weather resistance of the ink, for the purpose of improving the product sales promotion effect.

  As the printing ink for providing the printing layer, a color material composed of a pigment or a dye that gives color to the ink, a resin that is fixed to a printing material while the color material is dispersed and held in fine particles, and the resin A vehicle composed of a solvent that can stably dissolve, disperse the pigments and dyes, maintain the fluidity of the ink, and transfer an appropriate amount of ink from the printing plate, and further disperse the coloring material For the purpose of improving color developability, preventing precipitation, and improving fluidity, it is formed from an auxiliary agent such as a surfactant, but the colorant is preferably a pigment with good weather resistance.

  The printing method for providing a printing layer on the base film layer (10) is not particularly limited as long as it is a printing method capable of printing on the base film layer (10), but copper plating is performed on the surface of an iron cylinder (cylinder). To form a base, provide a release layer on the copper-plated surface, further copper-plated, and create a recess (cell) by engraving or corrosion on the polished copper surface Then, the gravure printing method in which the printing ink in the cell is transferred to the film layer (10) and can be printed in a colorful manner and has a high appealing effect is preferable.

  When printing on the base film layer (10), if necessary to improve the adhesion between the base film layer (10) and the ink, the surface of the base film layer (10) is treated with ozone. Pretreatment such as corona treatment is performed, or in order to further improve the adhesion between the base film layer (10) and the ink, the surface of the base film layer (10) is coated with an anchor coating agent or the like. Then, an anchor coat layer may be provided.

  Examples of the anchor coat agent include isocyanate-based (urethane-based), polyethyleneimine-based, polybutadiene-based, and organic titanium-based anchor coat agents, or polyurethane-based, polyacrylic-based, polyester-based, epoxy-based, and polyvinyl acetate-based. Adhesives for laminating such as cellulose and others can be used.

  As a method of coating the anchor coating agent, a known gravure roll coating method, reverse roll coating method, or the like can be used.

  As described above, the packaging material (C) forming the deformed pouch (B) has at least one surface having heat-sealing properties, and is not particularly limited, and known laminated films used for various pouches are: Either can be used. From these, it can select suitably according to the kind of content to pack, content, etc., and can use it.

  For example, biaxially stretched polyethylene terephthalate film (OPET) / adhesive / linear low density polyethylene film (L-LDPE), biaxially stretched polyethylene terephthalate film (OPET) / adhesive / metallocene catalyst in order from the outermost layer side. Polymerized ethylene-α-olefin copolymer film (S-PE), biaxially stretched polyethylene terephthalate film (OPET) / adhesive / unstretched polypropylene film (CPP).

  Biaxially stretched polyethylene terephthalate film (OPET) / Adhesive / Aluminum foil / Adhesive / Linear low density polyethylene film (L-LDPE) Biaxially stretched polyethylene terephthalate film (OPET) / Adhesive / Aluminum foil / Adhesive / Ethylene-α-olefin copolymer film (S-PE), biaxially stretched polyethylene terephthalate film (OPET) / adhesive / aluminum foil / adhesive / unstretched polypropylene film (CPP).

  Biaxially stretched polyethylene terephthalate film (OPET) / Adhesive / Biaxially stretched polyethylene terephthalate film (OPET) / Inorganic oxide deposited thin film layer / Adhesive / Linear low density polyethylene film (L-LDPE), Biaxially stretched polyethylene Terephthalate film (OPET) / adhesive / biaxially stretched polyethylene terephthalate film (OPET) / inorganic oxide deposited thin film layer / adhesive / ethylene-α-olefin copolymer film (S-PE), biaxially stretched polyethylene terephthalate film (OPET) / adhesive / biaxially stretched polyethylene terephthalate film (OPET) / inorganic oxide deposited thin film layer / adhesive / unstretched polypropylene film (CPP).

Biaxially stretched polyethylene terephthalate film (OPET) / Inorganic oxide vapor deposited thin film layer / Adhesive / Linear low density polyethylene film (L-LDPE) Biaxially stretched polyethylene terephthalate film (OPET) / Inorganic oxide vapor deposited thin film layer / Adhesive / ethylene-α-olefin copolymer film (S-PE), biaxially stretched polyethylene terephthalate film (OPET) / inorganic oxide deposited thin film layer / adhesive / unstretched polypropylene film (CPP).

  Ethylene-α-olefin polymerized using biaxially stretched polyamide film (ON) / adhesive / linear low density polyethylene film (L-LDPE), biaxially stretched polyamide film (ON) / adhesive / metallocene catalyst Copolymer film (S-PE), biaxially stretched polyamide film (ON) / adhesive / unstretched polypropylene film (CPP).

  Biaxially stretched polyamide film (ON) / adhesive / aluminum foil / adhesive / linear low density polyethylene film (L-LDPE), biaxially stretched polyamide film (ON) / adhesive / aluminum foil / adhesive / ethylene -Α-olefin copolymer film (S-PE), biaxially stretched polyamide film (ON) / adhesive / aluminum foil / adhesive / unstretched polypropylene film (CPP).

  Biaxially stretched polyamide film (ON) / adhesive / biaxially stretched polyamide film (ON) / deposited thin film layer of inorganic oxide / adhesive / linear low density polyethylene film (L-LDPE), biaxially stretched polyamide film ( ON) / adhesive / biaxially stretched polyamide film (ON) / deposited inorganic oxide thin film layer / adhesive / ethylene-α-olefin copolymer film (S-PE), biaxially stretched polyamide film (ON) / adhesion Agent / biaxially stretched polyamide film (ON) / deposited thin film layer of inorganic oxide / adhesive / unstretched polypropylene film (CPP).

  Biaxially stretched polyamide film (ON) / Inorganic oxide vapor deposited thin film layer / Adhesive / Linear low density polyethylene film (L-LDPE) Biaxially stretched polyamide film (ON) / Inorganic oxide vapor deposited thin film layer / adhesive / Ethylene-α-olefin copolymer film (S-PE), biaxially stretched polyamide film (ON) / deposited thin film layer of inorganic oxide / adhesive / unstretched polypropylene film (CPP), etc. It is not limited. Furthermore, the base film used for the base layer (10) and the barrier layer (12) of the laminated film is not limited to a film having tearability in the vertical and horizontal directions.

  Hereinafter, the method for producing the deformed pouch (B) according to the present invention will be described in more detail with reference to specific examples.

The packaging material (C) for producing the deformed pouch (B) according to the present invention includes a biaxially stretched polyethylene terephthalate film (OPET) having a thickness of 12 μm and having a linear tear property on the base film layer (10) (Unitika Ltd.) And a product name “Embret PC” film) was used, and a pattern was printed on the back surface of the OPET by a gravure printing method using a gravure ink having a urethane resin as a binder. Subsequently, as an adhesive layer (11) on the printed surface, a urethane adhesive is applied to about 4.0 g / m ² (dry), and a sealant film for forming a sealant layer (13) is formed with a thickness of 50 μm. A linear low-density polyethylene resin film (L-LDPE) is used and laminated by a dry lamination method to form a base film layer (10) / pattern printing layer (not shown) / adhesive layer (11) / sealant layer A laminated film having the layer configuration of (13) was used.

Next, as shown in FIG. 7, using a pouch-shaped bag making machine (20), the web-shaped packaging material (C) is divided into a front member (21a) and a back member (21b), and each sealant layer In order to make the surfaces face each other with a predetermined printing pattern matched, and finished in a pouch shape, the peripheral portion other than the filling port (5) of the pouch was sealed. Specifically, in the vertical sealing step (22), the bottom (2
), The vertical seal portion is cooled and completely sealed in the vertical seal cooling step (23), and then the left and right side portions (4, 4) are sealed in the horizontal seal step (24). Similarly, in the horizontal seal cooling step (25), the horizontal seal portion was cooled and completely sealed. Furthermore, in order to form the pouring function in the deformed portion sealing step (26), the top portion (the deformed portion) is sealed, and in the cooling step (27) of the deformed portion seal, the top portion (the deformed portion) is cooled and completely Sealed.

  Next, as shown in FIG. 1, a Thomson punching blade of notch (7), top (deformed) (1), bottom (2), and corner R (3) of the bottom (2) prepared separately Using a two-sided punching die (A) in which one is set, a notch (7), a top part (atypical part) (1), a bottom part (2), a corner R part of the bottom part (2) ( 3) was simultaneously punched in the punching step (28).

  Finally, in the side cutting step (29), a “dog” was provided between the seals of the front and back side portions (4) and cut sequentially to obtain a bag-made product (30).

  In addition, as shown in FIG. 4, the modified pouch according to the present invention opposes the surfaces of the sealant layer (13) of the front surface member (21 a) and the back surface member (21 b) with a predetermined printing pattern, The bottom tape (2a) for the bottom (2) is inserted in a gusset shape, and the bottom tape (2a) is sealed in the same manner as the peripheral edge other than the filling port (5) of the pouch to obtain a bottom gusset type standing pouch shape. I was able to.

  In Example 1, a biaxial film having a thickness of 12 μm having linear tearing properties as a barrier layer (12) through an adhesive layer (11) between the base film layer (10) and the sealant layer (13). A gas barrier film in which an aluminum oxide (alumina) is deposited on one side of a stretched polyethylene terephthalate film (OPET) (trade name “Emblet PC” film, manufactured by Unitika Ltd.) by a vacuum deposition method to form a deposited thin film layer having a thickness of 20 nm. A bag-finished product (30) was obtained in the same manner as in Example 1 except that.

  In Example 1, except that a biaxially stretched polyamide film (ON) having a thickness of 15 μm having linear tearability (trade name “Emblem NC” film, manufactured by Unitika Ltd.) having a linear tearing property was used for the base film layer (10). In the same manner as in Example 1, a bag-making completed product (30) was obtained.

  In Example 3, a biaxial film having a thickness of 15 μm having linear tearing properties as a barrier layer (12) through an adhesive layer (11) between the base film layer (10) and the sealant layer (13). A gas barrier film is formed by depositing aluminum oxide (alumina) on one side of a stretched polyamide film (ON) (trade name “Emblem NC” film manufactured by Unitika Ltd.) by a vacuum deposition method to form a deposited thin film layer having a thickness of 20 nm. A bag-finished product (30) was obtained in the same manner as in Example 3 except that.

  In Example 1, except that a 15 μm thick biaxially stretched polyamide film (ON) (made by Idemitsu Kosan Co., Ltd., trade name “Uniathlon” film) having linear tearability was used for the base film layer (10), In the same manner as in Example 1, a bag-finished product (30) was obtained.

In Example 5, a 15 μm-thick biaxial shaft having linear tearability as a barrier layer (12) through an adhesive layer (11) between the base film layer (10) and the sealant layer (13) A gas barrier film is formed by depositing aluminum oxide (alumina) on one side of a stretched polyamide film (ON) (trade name “Uniathlon” film, manufactured by Idemitsu Kosan Co., Ltd.) by vacuum deposition to form a deposited thin film layer having a thickness of 20 nm. A bag-finished product (30) was obtained in the same manner as in Example 5 except that.

  In Example 1, except that an ethylene-α-olefin copolymer film (S-PE) polymerized using a metallocene catalyst having a thickness of 50 μm was used as the sealant film for forming the sealant layer (13). In the same manner as in Example 1, a bag-finished product (30) was obtained.

  In Example 2, except that an ethylene-α-olefin copolymer film (S-PE) polymerized using a metallocene catalyst having a thickness of 50 μm was used as the sealant film for forming the sealant layer (13). In the same manner as in Example 2, a bag finished product (30) was obtained.

  In Example 3, except that an ethylene-α-olefin copolymer film (S-PE) polymerized using a metallocene catalyst having a thickness of 50 μm was used as the sealant film for forming the sealant layer (13). In the same manner as in Example 3, a bag-finished product (30) was obtained.

  In Example 4, except that an ethylene-α-olefin copolymer film (S-PE) polymerized using a metallocene catalyst having a thickness of 50 μm was used as the sealant film for forming the sealant layer (13). In the same manner as in Example 4, a finished bag product (30) was obtained.

  In Example 5, except that an ethylene-α-olefin copolymer film (S-PE) polymerized using a metallocene catalyst having a thickness of 50 μm was used as the sealant film for forming the sealant layer (13). In the same manner as in Example 5, a finished bag product (30) was obtained.

  In Example 6, except that an ethylene-α-olefin copolymer film (S-PE) polymerized using a metallocene catalyst having a thickness of 50 μm was used as the sealant film for forming the sealant layer (13). In the same manner as in Example 6, a bag-finished product (30) was obtained.

  In Example 1, as a sealant film for forming the sealant layer (13), a non-stretched polypropylene film (CPP) having a thickness of 50 μm was used, and a bag-made product (30) was obtained in the same manner as in Example 1. It was.

  In Example 2, a non-stretched polypropylene film (CPP) having a thickness of 50 μm was used as the sealant film for forming the sealant layer (13), and a bag-made product (30) was obtained in the same manner as in Example 2. It was.

  In Example 3, as a sealant film for forming the sealant layer (13), a non-stretched polypropylene film (CPP) having a thickness of 50 μm was used, and a bag-made product (30) was obtained in the same manner as in Example 3. It was.

  In Example 4, as a sealant film for forming the sealant layer (13), an unstretched polypropylene film (CPP) having a thickness of 50 μm was used, and a bag-made product (30) was obtained in the same manner as in Example 4. It was.

  In Example 5, a non-stretched polypropylene film (CPP) having a thickness of 50 μm was used as the sealant film for forming the sealant layer (13), and a bag-made product (30) was obtained in the same manner as in Example 5. It was.

  In Example 6, as a sealant film for forming the sealant layer (13), a non-stretched polypropylene film (CPP) having a thickness of 50 μm was used, and a bag-made product (30) was obtained in the same manner as in Example 6. It was.

  The bag-making completed product (30) of Examples 1 to 18 obtained as described above has a notch (7), a top portion (an irregular shape portion) (1), a bottom portion (2), and a corner R of the bottom portion (2). Punching using a punching die in which Thomson punching blades of part (3) are set together, and using a bag making machine (20) for sequentially cutting left and right side parts (4) As a result, the manufacturing process is rationalized, and the bottom slit processing in the step (49) of slitting the excess portion of the film of the bottom (2) used in the conventional bag making machine (40) with a slit blade This eliminates the need for the slitting device and the corner punching device for the corner R section machining step (50) for adding R to the bottom corner (corner), and the machine length is very short. In addition, the cost of consumables related to the slit device and the corner punch device can be greatly reduced. In terms of quality, the integration of processes eliminates meandering due to tension between processes, and displacement due to expansion and contraction, leading to improved quality. In addition, it was easy and relatively inexpensive to manufacture a punch with an embedded Thomson punch. In addition, the existing bag making machine (40) could be installed without significant modification.

It is a top view which shows one Example of the double-sided punching die used for the manufacturing method of the profile pouch which concerns on this invention. It is a top view which shows one Example of this pouch made into the object of the manufacturing method of the profile pouch which concerns on this invention. It is a top view explaining the process of a notch, an unusual shape part, a bottom part, corner R part extraction, and side part cutting in the manufacturing method of the unusual shape pouch concerning the present invention. It is XX side sectional drawing of FIG. It is a sectional side view which shows one Example of the laminated constitution of the packaging material used for the manufacturing method of the profile pouch which concerns on this invention. It is a sectional side view which shows the other Example of the layer structure of the packaging material used for the manufacturing method of the profile pouch which concerns on this invention. It is a flowchart of the process in one Example of the bag making machine by the manufacturing method of the profile pouch which concerns on this invention. It is a flowchart of the process in one Example of the bag making machine by the manufacturing method of the conventional unusual shape pouch. It is a perspective view which shows the form of a normal pouch. It is a perspective view which shows the form of a normal pouch.

Explanation of symbols

A ... Die B ... Deformed pouch C ... Packaging material 1 ... Top (Deformed)
DESCRIPTION OF SYMBOLS 2 ... Bottom part 2a ... Bottom tape 3 ... Corner R part 4 ... Side part 5 ... Filling port 6 ... Spout 7 ... Notch 10 ... Base film layer 11・ ・ ・ Adhesive layer 12 ・ ・ ・ Barrier layer 13 ・ ・ ・ Sealant layer 20 ・ ・ ・ Bag making machine 21 a ・ ・ ・ Front surface member 21 b ・ ・ ・ Back surface member 22 ・ ・ ・ Vertical sealing step 23 ・ ・ ・Cooling process of vertical seal 24 ... Horizontal sealing process 25 ... Cooling process of horizontal seal 26 ... Variant part sealing process 27 ... Cooling process of irregular part seal 28 ... Notch / Atypical part / Bottom part Simultaneous punching process of corner R part 29 ... Side part cutting process 30 ... Bag making completed product 40 ... Conventional bag making machine 41a ... Surface member 41b ... Back member 42 ... Vertical seal Process 43 ... Cooling process of vertical seal 44 ... Horizontal seal process 4 ... Cooling process for horizontal seals 46 ... Sealing process for irregularly shaped parts 47 ... Cooling process for irregularly shaped part seals 48 ... Processing for notching process 49 ... Slit process for bottom part 50 ... Processing process for corner R part 51 ... Deformation part removal process 52 ... Side part cutting process 53 ... Bag making completed product

Claims (1)

At least a web-like packaging material having a sealant layer on one side is prepared, and the vertical or / and horizontal width of the pouch is narrower than the entire width of the pouch at a portion other than the corner R portion of the pouch. In which the sealant layers of the packaging material are opposed to each other, and the peripheral part other than the filling port of the pouch is sealed, and a notch, a top part (atypical part), Punching with a punching die in which the punching edge of the bottom, corner R portion of the bottom is set to one, and the left and right side parts ,
A method for producing a deformed pouch, comprising cutting a rear side portion of a pouch before a pouch that is continuous in a web flow direction, and subsequently cutting a front side portion of the next pouch .

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