JP5365289B2 - Manufacturing method of filling - Google Patents

Description

  The present invention relates to a method for producing a filling in which contents are filled in a bag-shaped packaging material obtained by heat-sealing sealant layers of a laminated film having a sealant layer containing a lubricant on one surface. Furthermore, the present invention relates to a method for producing a filling material that controls the lubricant that moves to the surface of the sealant layer and is excellent in hygiene and safety so that the lubricant is not mixed into the contents.

  Bag-shaped packaging materials that wrap all kinds of items such as food and drinks, daily goods, and pharmaceuticals are laminated on a base film with several types of layers with various properties such as strength, light-shielding properties, barrier properties, and sealing properties. It is obtained by making a laminated film into a bag shape.

  The laminated film used for packaging has a sealant layer on the inner surface, and is processed into a bag-shaped packaging material having an opening by thermocompression bonding (heat sealing) the sealant layers together by heat in a bag making process. Then, in the bag-shaped packaging material filling process processed into a bag shape, the contents are filled from the opening, and further, the contents are sealed by thermocompression bonding (heat sealing) between the sealant layers of the opening. Goods).

  Furthermore, an additive may be added to each layer in order to impart functionality. In particular, an additive is often added to the sealant layer that is the innermost surface layer in contact with the contents. Additives include antioxidants, lubricants, antiblocking agents, antistatic agents and the like.

  Among them, the lubricant is kneaded into the resin in the sealant layer, and when the film is formed, a part of the added lubricant moves (bleeds out) to the surface of the sealant layer to give the film a slip property (Patent Document) 1 and Patent Document 2).

  At this time, among the additives added to the laminated film, the lubricant added to the sealant layer is added to obtain the slipperiness of the sealant layer surface. The laminated film used for packaging is processed into a bag shape in the processing step, and the sealant layers of the processed bag-shaped packaging material are in contact with each other. In filling the bag-like workpiece with the contents in the filling step, it is necessary to open the opening of the bag-like workpiece. At this time, a lubricant is added to the sealant layer in order to easily peel the contacted sealant layer.

Japanese Patent Laid-Open No. 2005-32456 JP 2006-56146 A

  If the slipperiness of the sealant layer is not appropriate, problems may occur in a bag making process for processing a laminated film into a bag shape or a content filling process for filling a bag-shaped packaging material processed into a bag shape. Specifically, when the amount of lubricant to the sealant layer is increased, the feed amount of the laminated film is varied in the bag making process, resulting in problems such as a shift in seal width and a shift in printed pattern. In addition, when the amount of lubricant to the sealant layer is suppressed, the sealant layers are brought into close contact with each other in the content filling step, and the sealant layers cannot be easily separated from each other, thereby opening the opening of the bag-like workpiece. The problem arises that it becomes impossible.

  The laminated film is formed by a roll-to-roll method. The base film and the sealant layer that are continuously conveyed are laminated, and the laminated film on which the sealant layer is formed is wound up in a roll shape. At this time, when the laminated film on which the sealant layer is laminated is wound up in a roll shape, a part of the lubricant added to the sealant layer is transferred to the substrate film surface which is the back surface, thereby changing the slipperiness of the substrate film surface. At this time, when the slipperiness of the base film is large, the feeding amount of the laminated film varies, and problems such as a shift in the seal width and a shift in the printed pattern occur.

  When filling food, semiconductor, and medical products as contents into a bag-like packaging material, the amount of lubricant is required for the sealant layer on the side in contact with the contents from the viewpoint of hygiene and safety. . Bag-type packaging materials that require hygiene and safety often meet the requirements of specifications, and therefore, the lubricant for the sealant layer is often low in formulation. Therefore, the slipperiness is poor, and when rolled up, blocking due to the close contact between the sealant layer and the back surface is likely to occur, often causing problems in the laminated film transporting step before the bag making step.

  In this invention, the manufacturing method of the filling material with which the content was filled inside the bag-shaped packaging material obtained by heat-sealing the sealant layers of a laminated film provided with the sealant layer containing a lubricant on one surface. It is an object of the present invention to provide a method for producing a filler that controls the behavior of the lubricant in the sealant layer and has a small amount of lubricant in the sealant layer on the inner surface when the contents are filled.

In order to solve the above-mentioned problem, the invention according to claim 1 is a method for manufacturing a filling material in which a content is filled in a bag-shaped packaging material made of a laminated film, the sealant containing a lubricant on one surface. A step of producing a laminated film comprising an adhesive layer on one surface of the sealant layer, and cutting out the laminated film and heat-sealing the sealant layers to each other so that the inner surface is a sealant layer and has an opening. The step of producing the bag-shaped packaging material, the step of opening the opening of the bag-shaped packaging material, and the heating temperature within the range of 50 ° C. or higher and 80 ° C. or lower with the bag-shaped packaging material opened. Sealing the contents by heat-sealing the sealant layers at the opening of the bag-shaped packaging material, the step of filling the bag-shaped packaging material with the contents, and the opening of the bag-shaped packaging material; And as the manufacturing method of the packing which characterized by sequentially and a step to Hamabutsu.

  Moreover, as invention of Claim 2, the amount of adhesives per unit area of the said laminated | multilayer film exists in the range of 150 times or more and 300 times or less of the kneading amount of the lubricant per unit area in the said sealant layer. It was set as the manufacturing method of the filler of Claim 1 characterized by these.

According to a third aspect of the present invention, in the step of filling the bag-shaped packaging material with the contents from the opening, the amount of lubricant per unit area of the surface of the sealant layer on the inner surface of the bag-shaped packaging material is 0.1 mg. The method for producing a filler according to claim 1 or 2 , wherein the production method is less than / m ² .

According to a fourth aspect of the present invention, the amount of the lubricant per unit area of the sealant layer is 25 mg / m ² or less, and the laminated film is cooled to 25 ° C. after the step of producing the laminated film. The method for producing a filler according to any one of claims 1 to 3 , further comprising a step of aging within a range of 35 ° C or lower.

According to a fifth aspect of the present invention, the amount of lubricant kneaded per unit area of the sealant layer exceeds 25 mg / m ² , and the laminated film is formed after the step of producing the laminated film. The method for producing a filler according to any one of claims 1 to 3 , further comprising a step of aging within a range of not lower than 50 ° C and lower than 50 ° C.

As the invention described in claim 6, prepared as described filling in any of claims 1 to 5 lubricant contained in the sealant layer of the laminated film is characterized in that it is a fatty acid amide or alkylene bis fatty acid amide It was a method.

As the invention of claim 7, wherein the adhesive is a polyester to form the adhesive layer of the laminate film, an isocyanate-based, any one of claims 1 to 6, characterized in that an adhesive polyurethane It was set as the manufacturing method of the packing as described in above.

  In the method for producing a filler of the present invention, the behavior of the lubricant in the sealant layer can be controlled, and the amount of lubricant present on the surface of the sealant layer on the inner surface of the bag-shaped packaging material can be reduced when filling the contents. The lubricant can be prevented from being mixed into the contents. As a result, it has been possible to provide a filling material that can be suitably filled with electronic parts such as food and semiconductors and medical materials as contents from the viewpoint of hygiene and safety. Moreover, in the manufacturing method of the filling of this invention, in the process of producing the bag-shaped packaging material provided with an opening part from a laminated film, and the process of opening the opening part of a bag-shaped packaging material, the sealant layer surface Therefore, it was possible to provide a highly productive method for producing a filler because slipperiness can be imparted by adding a lubricant.

FIG. 1 is an explanatory sectional view of a laminated film of the present invention. Drawing 2 is an explanatory view of one embodiment of a manufacturing method of a packing of the present invention (the 1). Drawing 3 is an explanatory view of one embodiment of the manufacturing method of the packing of the present invention (the 2).

The laminated film of the present invention will be described.
FIG. 1 shows an explanatory sectional view of the laminated film of the present invention. The laminated film 1 of the present invention includes a sealant layer 11 containing a lubricant on one surface, and an adhesive layer 13 on one surface of the sealant layer. In FIG. 1A, the sealant layer 11 is formed on one surface of the base film 12 via the adhesive layer 13. The sealant layer 11 can be bonded to each other by heat sealing (thermocompression bonding). 1B, the functional layer 14 is provided between the base film 12 and the sealant layer 11, and the adhesive layer 13 is provided between the sealant layer 11 and the functional layer 14. The adhesive layer 15 is provided between the base film 12 and the functional layer 14. As a functional layer, the barrier layer which has water vapor | steam barrier property or oxygen barrier property, and the printing layer which can improve designability can be illustrated, for example.

  The laminated film of the present invention is not limited to the configuration of the laminated film in FIG. In the laminated film of the present invention, if the sealant layer 11 containing a lubricant is provided on one surface, and the adhesive layer 13 is provided on one surface of the sealant layer, it is not limited to the other layer configuration. Absent. In the present invention, the amount of lubricant on the other surface of the sealant layer can be controlled by providing the adhesive layer 13 on one surface of the sealant layer 11.

  In the laminated film of the present invention, the base film 12 is a polyester film such as a biaxially stretched polyethylene terephthalate film (PET film), a polyamide film such as a biaxially stretched nylon film (ONy film), or a biaxially stretched polypropylene film (OPP film). A polyolefin film such as) is selected, and a better adhesive strength can be obtained by subjecting the surface to which other layers are bonded to corona treatment or the like.

  Moreover, as an adhesive agent used for the adhesive bond layer 13, a polyester system, an isocyanate system, a polyurethane system, and a mixture mainly composed of them can be used.

  The sealant layer 11 is a layer constituting the outermost surface of one surface of the laminated film, and the sealant layers can be bonded to each other by thermocompression bonding (heat sealing). That is, as the sealant layer forming material, a material that can be sealed with heat can be used. Specifically, polyethylene (PE) such as high density polyethylene (HDPE), medium density polyethylene (MDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), polypropylene (PP) polybutene, polymethyl A copolymer of two or more monomers selected from olefins such as pentene, such as an ethylene-propylene copolymer, can be mentioned, and a mixture of two or more of these can also be used.

  The sealant layer 11 can be formed by casting using the above resin. Alternatively, the resin may be extruded into a tube shape by an inflation method, air is blown into the extruded tube film, and both ends of the tube film are cut off on the production line and wound up. Moreover, it is also possible to use as a sealant layer the film which carried out the coextrusion of 2-3 types of resin and was made into the multilayer structure.

  The sealant layer 11 includes a lubricant. As the lubricant contained in the sealant layer, fatty acid amide or alkylene bis fatty acid amide system is preferably used. These are effective in obtaining slipperiness because they are easy to bleed out during film formation and have high transparency. Examples of fatty acid amides include stearic acid amide, oleic acid amide, erucic acid amide, and behenic acid amide, and alkylene bis fatty acid amides include methylene bis stearic acid amide, ethylene bis stearic acid amide, and ethylene bisolefinic acid amide. Etc. are used.

  The amount of lubricant added to the resin in the sealant layer is selected according to the thickness of the sealant layer and the desired slip property. If the amount of lubricant added is too large, the lubricant will bleed out on the surface of the sealant layer, resulting in a gap in the seal width and printed pattern in the bag making process, and weakened adhesive strength when heat sealed. . Conversely, if the amount of lubricant added is too small, the slipperiness of the surface of the sealant layer cannot be obtained satisfactorily, and bag-making suitability and filling suitability may deteriorate. Therefore, in the case of a film having a sealant layer thickness of 50 to 250 μm, the amount of lubricant is preferably about 50 ppm to 800 ppm with respect to the resin weight. However, regarding the sealant layer thickness and the amount of lubricant relative to the resin weight for expressing appropriate slipperiness on the surface of the sealant layer, the thickness of the sealant layer varies depending on the application. It is necessary to consider that the amount is also reduced.

  Further, as the functional layer 14, for example, an aluminum foil or a thin film made of a metal or a metal compound can be used as a barrier layer. At this time, the thickness of the aluminum foil provided as the barrier layer is preferably 7 to 100 μm. In addition, as a material for forming a thin film made of a metal or metal compound provided as a barrier layer, oxides, nitrides, fluorides selected from magnesium, silicon, aluminum, tin, titanium, zinc, zirconium, calcium, nickel, etc. Any one of these or a mixture of two or more of them may be mentioned, among which aluminum oxide or silicon oxide is more preferable because it is excellent in oxygen and water vapor gas barrier properties. The thickness of the metal aluminum, aluminum oxide or silicon oxide thin film is preferably about 1 to 300 nm. These thin films can be formed by a vacuum film forming method. As a vacuum film formation method, a vacuum deposition method, a sputtering method, an ion plating method, a plasma vapor deposition method (CVD), or the like can be used.

  Next, the manufacturing method of the filling of this invention is demonstrated. 2 and 3 are explanatory views of an embodiment of the method for producing a filler according to the present invention.

  In the filling of the present invention, the following steps are performed.

<Step 1>
Film production process for producing a wound laminated film 1 having a sealant layer containing a lubricant on one surface and an adhesive layer on one surface of the sealant layer (FIG. 2A)
<Process 2>
Aging process for aging the wound laminated film 1 (FIG. 2B)
<Step 3>
Cut-out laminated film 1 is cut out, and the sealant layers are heat-sealed to produce a bag-making process (FIG. 2 (c), FIG. c))
<Step 4>
The step of opening the opening of the bag-shaped packaging material 2 (FIG. 3D)
<Step 5>
The process of heating the bag-shaped packaging material 2 in an opened state (FIG. 3 (e))
<Step 6>
Step of filling the bag-shaped packaging material with the contents 3 from the opening (FIG. 3 (f))
<Step 7>
The process of sealing the contents 3 by heat-sealing the sealant layers at the opening of the bag-like packaging material to form a filling 4 (FIG. 3 (g))

  In addition, (Process 4)-(Process 7) is a filling process, and is performed by a series of continuous apparatuses.

  In the method for producing a filler, it is desirable that the lubricant on the surface of the sealant layer behaves as follows.

  In the bag making process (FIGS. 2 (c) and 3 (c)), it is desired that an appropriate amount of lubricant is present on the surface of the sealant layer, and that the surface of the sealant layer has an appropriate slip property. When the lubricant is not present on the surface of the sealant layer, blocking is likely to occur between the sealant layer and the back surface of the laminated film in the wound state, which often causes problems in the laminated film transport process before the bag making process. However, when a large amount of lubricant is present on the surface of the sealant layer, a variation occurs in the feed amount of the laminated film in the bag making process, resulting in problems such as a shift in seal width and a shift in printed pattern.

  Moreover, in the process (FIG.3 (d)) which opens the opening part of the bag-shaped packaging material 2 of a filling process, a lubricant exists in the sealant layer surface, and it is desired that the sealant layer surface has slipperiness. If there is no lubricant on the surface of the sealant layer in the step of opening the opening of the bag-shaped packaging material 2, the sealant layers are in close contact with each other, making it difficult to peel off the sealant layers. It becomes impossible to open the department.

  In the step of filling the contents 3 from the opening into the bag-shaped packaging material in the filling step (FIG. 3 (f)), it is desirable that no lubricant exists on the surface of the sealant layer. When a lubricant is present on the surface of the sealant layer when filling the contents, it comes into contact with the contents and is mixed into the contents, which is not preferable from the viewpoint of the hygiene and safety of the contents.

  The inventors of the present invention are greatly concerned with the adhesive layer provided so as to be in contact with the sealant layer with respect to the behavior of the lubricant contained in the sealant layer of the laminated film. The adhesive layer can strongly attract the lubricant contained in the sealant layer, and the lubricant is incorporated into the adhesive layer, and the amount of lubricant present on the surface of the sealant layer in the laminated film is The inventors have found that temperature is related and have arrived at the present invention.

  In the manufacturing method of the filling material of the present invention, in the filling step, after the step of opening the opening of the bag-shaped packaging material 2 (FIG. 3D), the bag-shaped packaging material 2 is opened. A heating step (FIG. 3E) is provided. By providing a step of heating the bag-shaped packaging material in an opened state, the lubricant present on the surface of the sealant layer necessary for opening the opening of the bag-shaped packaging material is moved to the adhesive layer side, and the adhesive layer Can be imported. By providing the heating step, the amount of lubricant present on the surface of the sealant layer can be reduced in the step of filling the contents into the bag-shaped packaging material, which is the next step, and the hygiene of the content in contact with the surface of the sealant layer, Safety can be maintained.

  By providing the heating step in the filling step, there is a certain amount of lubricant on the surface of the sealant layer until the opening operation at the time of filling, so that sufficient slipperiness can be expressed. Thereafter, when the bag-shaped packaging material is heated in the opened state, the lubricant that has bleeded out to the surface of the sealant layer can be moved from the inside of the sealant layer to the adhesive layer. Even if the lubricant taken up to the adhesive layer is returned to room temperature, the lubricant can be prevented from bleeding out to the surface of the sealant layer again.

  In the heating process shown in FIG. 3 (e), the thermostat H is shown as the heating process. In the thermostat H of the present invention, a metal such as stainless steel or a heat resistant plastic can be used. Moreover, it is good also as a booth like suspending a heat resistant film from the ceiling in the shape of a curtain. Alternatively, the temperature may be adjusted by partitioning with a heat resistant film to form a thermostatic bath. The thermostat of the present invention is not limited to a tank shape, and is not limited to a tank shape as long as the heating atmosphere can be maintained.

  Further, in the method for producing a filler according to the present invention, the amount of the adhesive per unit area of the laminated film is in the range of 150 to 300 times the amount of the lubricant per unit area in the sealant layer. It is preferable that When the amount of adhesive is less than 150 times the amount of lubricant kneaded per unit area in the sealant layer, the amount of lubricant on the surface of the sealant layer decreases once by heating, but over time, the lubricant returns to the surface of the sealant layer over time. Bleed out, and the hygiene and safety of the contents may not be maintained. On the other hand, when the amount of the adhesive exceeds 300 times the amount of the lubricant per unit area in the -rant layer, the lubricant in the sealant layer is taken into the adhesive layer even when the laminated film is not heated to a high temperature. Since the amount of lubricant present on the surface of the sealant layer is extremely small, blocking occurs due to the close contact between the sealant layer and the base film in the bag making process, or the sealant layers are in close contact with each other in the filling process, making it easy to connect the sealant layers together. It may become impossible to peel and the opening of the bag-shaped packaging material cannot be opened.

  Moreover, in the manufacturing method of the filling of this invention, it is preferable to carry out within the range whose heating temperature in the process heated in the state which opened the bag-shaped packaging material is 50 to 80 degreeC. By setting the temperature within the above range, the lubricant can be efficiently moved into the sealant layer and further into the adhesive layer. In addition, when the heating temperature is less than 50 ° C., the heat to the inside of the sealant layer is not transmitted and the lubricant remains on the surface of the sealant layer, or the lubricant is left on the surface of the sealant layer after filling the contents. It may bleed out. Moreover, in the case of 80 degreeC or more, the bag-shaped packaging material which consists of laminated | multilayer films may deform | transform, and problems, such as wrinkles of a laminated | multilayer film, may arise. More desirably, it is preferable to set the temperature for heating the bag-shaped packaging material in the range of 55 ° C to 70 ° C.

Furthermore, in the method for producing a filler according to the present invention, the amount of lubricant per unit area of the surface of the sealant layer on the inner surface of the bag-shaped packaging material in the step of filling the contents from the opening (FIG. 3 (f)). Is preferably 0.1 mg / m ² or less. In the present invention, the lubricant present on the surface of the sealant layer can be moved to the adhesive layer side by heating with the bag-shaped packaging material opened. By setting the amount of lubricant on the surface of the sealant layer when the content is filled to 0.1 mg / m ² or less, the hygiene and safety of the content in contact with the surface of the sealant layer can be maintained. When the amount of lubricant on the surface of the sealant layer when filling the contents exceeds 0.1 mg / m ² , the contents contacted the sealant layer in the step of filling the contents into the bag-shaped packaging material from the opening. In some cases, the contents are mixed with a lubricant, which makes it difficult to maintain the hygiene and safety of the contents at a high level.

  Moreover, in the manufacturing method of the filling of this invention, the aging process <process 2> which ages the winding-shaped laminated | multilayer film 1 after the film preparation process which produces the winding-shaped laminated | multilayer film 1 may be provided. preferable. By performing the aging process, the curing rate of the adhesive of the adhesive layer can be accelerated, and the adhesive strength and various resistances can be improved. Usually, the aging temperature in an aging process is 35 to 60 degreeC. The aging process is performed in the aging chamber E in which the temperature and humidity are controlled to be constant.

In the method for producing a filler according to the present invention, when the amount of lubricant kneaded per unit area of the sealant layer is 25 mg / m ² or less, the aging temperature in the aging step is in the range of 25 ° C. or more and 35 ° C. or less. It is preferable to be within. When the amount of lubricant kneaded per unit area of the sealant layer is lowered to 25 mg / m ² or less, the amount of lubricant on the surface of the sealant layer also decreases. When aging is performed at a temperature exceeding 35 ° C. in a laminated film in which the amount of the lubricant per unit area of the sealant layer is as low as 25 mg / m ² or less, the lubricant on the surface of the sealant layer is adhered to the inside of the sealant layer and the adhesive. The amount of lubricant on the surface of the sealant layer is extremely reduced. Therefore, the appropriate slipperiness cannot be expressed in the subsequent bag making process or filling process, blocking of the sealant layer and the base film occurs in the bag making process, or the sealant layers are in close contact with each other in the filling process. There may be a problem that the opening of the workpiece cannot be opened. On the other hand, when aging is performed at a temperature less than 25 ° C., the original effects of the aging process such as improving the adhesive strength and various resistances may not be obtained. In the method for producing a filler according to the present invention, even when the amount of the kneaded lubricant is reduced to 25 mg / m ² or less, by controlling the movement of the lubricant in each step, the bag making step and the filling step are performed. It can be set as the manufacturing method which does not generate a malfunction.

In the method for producing a filler according to the present invention, when the amount of the lubricant per unit area of the sealant layer is greater than 25 mg / m ² , the aging temperature in the aging process is from 40 ° C. to 50 ° C. It is preferable to be within a small range. When the amount of lubricant kneaded per unit area of the sealant layer is greater than 25 mg / m ² , the amount of lubricant on the surface of the sealant layer also increases, so it is necessary to move more lubricant in the sealant layer to the adhesive layer. is there. When aging is performed at a temperature below 40 ° C. in a laminated film in which the amount of the lubricant per unit area of the sealant layer is as low as 25 mg / m ² or less, the lubricant in the sealant layer moves to the adhesive layer. Since this cannot be done, problems such as a shift in seal width and a shift in printed pattern may occur in the bag making process. Further, since the sealant layer contains a large amount of lubricant, there is a possibility that the lubricant cannot be sufficiently moved to the adhesive layer side in the heating step in the filling step. On the other hand, when aging is performed at a temperature of 50 ° C. or higher, most of the lubricant in the sealant layer is taken into the adhesive layer in the aging process, and suitable slipping in the subsequent bag making process and filling process. In the bag making process, the sealant layer and the base film are blocked, or in the filling process, the sealant layers are in close contact with each other and the opening of the bag-like processed product cannot be opened. May occur.

In addition, in the manufacturing method of the filler of this invention, it is preferable that the kneading amount of the lubricant per unit area of the sealant layer is in the range of 5 mg / m ² or more and 100 mg / m ² or less. If the amount of lubricant incorporated is less than 5 mg / m ² , the effect of incorporating the lubricant may not be obtained. On the other hand, when the amount of lubricant exceeds 100 mg / m ² , the effect of the present invention may not be obtained. In the method for producing a filler according to the present invention, when the amount of the lubricant per unit area of the sealant layer is 5 mg / m ² or more and 25 mg / m ² or less, the aging temperature in the aging process is 25 ° C. or more. It is preferably within a range of 35 ° C. or less. When the kneading amount of the lubricant per unit area of the sealant layer is more than 25 mg / m ² and 100 mg / m ² or less, the aging temperature in the aging process is preferably in the range of 40 ° C. or more and less than 50 ° C.

  The aging time in the aging process is preferably in the range of 0.5 days or more and 5 days or less. Usually, the aging time is set to about 1 day.

  Moreover, in the manufacturing method of the filler of this invention, it is preferable that the lubricant contained in the sealant layer of a laminated film is fatty acid amide or alkylene bis fatty acid amide. The effect of the present invention can be further increased by using a fatty acid amide or an alkylene bis fatty acid amide as the lubricant.

  Moreover, in the manufacturing method of the filler of this invention, it is preferable that the adhesive agent which forms an adhesive bond layer is a polyester type, isocyanate type, and polyurethane type adhesive. Polyester-based, isocyanate-based, and polyurethane-based adhesives have a strong tendency to incorporate the lubricant in the sealant layer, and can be suitably used as a method for producing the filler of the present invention.

  From the above, the filling of the present invention is manufactured. In the filling of the present invention, the slipperiness of the surface of the sealant layer is in the best state until the opening operation in the bag making process and the filling process, and after the filling of the contents, there is almost no lubricant on the surface of the sealant layer. Since it does not exist, it is possible to provide a filling that is excellent in productivity and safe in contents and hygienic.

  In addition, about the manufacturing apparatus of the filling material of this invention, it will not be limited, and if it can obtain the effect of this invention, it can manufacture using what kind of apparatus.

  Examples of the present invention are shown below, but the technical scope of the present invention is not limited to these Examples.

Example 1
A film provided with a barrier layer (aluminum foil (material)) on a nylon film (thickness 20 μm) as a base film was prepared. On the other hand, as a sealant layer (film thickness: 40 μm), erucic amide was kneaded as a lubricant in an amount of about 14.8 mg / m ² (added amount: about 400 ppm), and a polypropylene film having a film thickness of 40 μm produced by a casting method was added. Using. And the laminated film was manufactured using the dry laminating apparatus. Further, a polyurethane-based adhesive was used as an adhesive, and a laminated film in which a sealant layer made of polypropylene was formed on the barrier layer side of the film was produced. The adhesive coating amount of the adhesive layer next to the sealant layer here was about 3.7 g / m ² .
This laminated film was conveyed to an aging chamber, and aging for curing the adhesive was performed at 30 ° C. for one day. Thereafter, a roll-shaped laminated film was applied to a bag making machine to produce a bag-shaped packaging material having an opening. Next, using a filling machine, in the step of filling the bag-shaped packaging material, the opening of the bag-shaped packaging material is opened, and heating is performed at 60 ° C. until just before filling with the opening of the bag-shaped packaging material opened. A filling bath was prepared by filling the contents (water) and then heat-sealing the opening.

(Example 2)
A film provided with a barrier layer (aluminum foil (material)) on a nylon film (thickness 20 μm) as a base film was prepared. On the other hand, as a sealant layer (film thickness: 40 μm), erucic amide was kneaded as a lubricant in an amount of about 14.8 mg / m ² (added amount: about 400 ppm), and a polypropylene film having a film thickness of 40 μm produced by a casting method was added. Using. And the laminated film was manufactured using the dry laminating apparatus. Further, a polyurethane-based adhesive was used as an adhesive, and a laminated film in which a sealant layer made of polypropylene was formed on the barrier layer side of the film was produced. The adhesive application amount of the adhesive layer next to the sealant layer here was about 5.2 g / m ² .
This laminated film was conveyed to an aging chamber, and aging for curing the adhesive was performed at 30 ° C. for one day. Thereafter, a roll-shaped laminated film was applied to a bag making machine to produce a bag-shaped packaging material having an opening. Next, using a filling machine, in the step of filling the bag-shaped packaging material, the opening of the bag-shaped packaging material is opened, and heating is performed at 60 ° C. until just before filling with the opening of the bag-shaped packaging material opened. A filling bath was prepared by filling the contents (water) and then heat-sealing the opening.

(Example 3)
A film provided with a barrier layer (aluminum foil (material)) on a nylon film (thickness 20 μm) as a base film was prepared. On the other hand, as a sealant layer (film thickness: 40 μm), erucic amide was kneaded as a lubricant in an amount of about 14.8 mg / m ² (added amount: about 400 ppm), and a polypropylene film having a film thickness of 40 μm produced by a casting method was added. Using. And the laminated film was manufactured using the dry laminating apparatus. Further, a polyurethane-based adhesive was used as an adhesive, and a laminated film in which a sealant layer made of polypropylene was formed on the barrier layer side of the film was produced. The adhesive coating amount of the adhesive layer next to the sealant layer here was about 3.7 g / m ² .
This laminated film was conveyed to an aging chamber, and aging for curing the adhesive was performed at 45 ° C. for one day. Thereafter, a roll-shaped laminated film was applied to a bag making machine to produce a bag-shaped packaging material having an opening. Next, using a filling machine, in the step of filling the bag-shaped packaging material, the opening of the bag-shaped packaging material is opened, and heating is performed at 60 ° C. until just before filling with the opening of the bag-shaped packaging material opened. A filling bath was prepared by filling the contents (water) and then heat-sealing the opening.

Example 4
A film provided with a barrier layer (aluminum foil (material)) on a nylon film (thickness 20 μm) as a base film was prepared. On the other hand, as a sealant layer (film thickness of 80 μm), erucic amide was kneaded in an amount of about 29.6 mg / m ² (addition amount: about 400 ppm) as a lubricant, and a film having a thickness of 80 μm produced by a casting method was added. Using. And the laminated film was manufactured using the dry laminating apparatus. Further, a polyurethane-based adhesive was used as an adhesive, and a laminated film in which a sealant layer made of polypropylene was formed on the barrier layer side of the film was produced. The adhesive application amount of the adhesive layer next to the sealant layer here was about 5.9 g / m ² .
This laminated film was conveyed to an aging chamber, and aging for curing the adhesive was performed at 30 ° C. for one day. Thereafter, a roll-shaped laminated film was applied to a bag making machine to produce a bag-shaped packaging material having an opening. Next, using a filling machine, in the step of filling the bag-shaped packaging material, the opening of the bag-shaped packaging material is opened, and heating is performed at 60 ° C. until just before filling with the opening of the bag-shaped packaging material opened. A filling bath was prepared by filling the contents (water) and then heat-sealing the opening.

(Example 5)
A film provided with a barrier layer (aluminum foil (material)) on a nylon film (thickness 20 μm) as a base film was prepared. On the other hand, as a sealant layer (film thickness: 40 μm), erucic amide was kneaded as a lubricant in an amount of about 14.8 mg / m ² (added amount: about 400 ppm), and a polypropylene film having a film thickness of 40 μm produced by a casting method was added. Using. And the laminated film was manufactured using the dry laminating apparatus. Further, a polyurethane-based adhesive was used as an adhesive, and a laminated film in which a sealant layer made of polypropylene was formed on the barrier layer side of the film was produced. The adhesive application amount of the adhesive layer next to the sealant layer here was about 2.0 g / m ² .
This laminated film was conveyed to an aging chamber, and aging for curing the adhesive was performed at 30 ° C. for one day. Thereafter, a roll-shaped laminated film was applied to a bag making machine to produce a bag-shaped packaging material having an opening. Next, using a filling machine, in the step of filling the bag-shaped packaging material, the opening of the bag-shaped packaging material is opened, and heating is performed at 60 ° C. until just before filling with the opening of the bag-shaped packaging material opened. A filling bath was prepared by filling the contents (water) and then heat-sealing the opening.

(Comparative Example 1)
A film provided with a barrier layer (aluminum foil (material)) on a nylon film (thickness 20 μm) as a base film was prepared. On the other hand, as a sealant layer (film thickness: 40 μm), erucic amide was kneaded as a lubricant in an amount of about 14.8 mg / m ² (added amount: about 400 ppm), and a polypropylene film having a film thickness of 40 μm produced by a casting method was added. Using. And the laminated film was manufactured using the dry laminating apparatus. Further, a polyurethane-based adhesive was used as an adhesive, and a laminated film in which a sealant layer made of polypropylene was formed on the barrier layer side of the film was produced. The adhesive coating amount of the adhesive layer next to the sealant layer here was about 3.7 g / m ² .
This laminated film was conveyed to an aging chamber, and aging for curing the adhesive was performed at 30 ° C. for one day. Thereafter, a roll-shaped laminated film was applied to a bag making machine to produce a bag-shaped packaging material having an opening. Next, using a filling machine, in the filling process of the bag-shaped packaging material, the opening of the bag-shaped packaging material is opened, then the contents (water) are filled, and finally the opening is heat sealed. Was made.

  The following evaluation was performed in the manufacturing method of the packing material of Examples 1 to 5 and Comparative Example 1.

Measurement of static friction coefficient and lubricant amount of laminated film immediately after laminating In the method for producing fillers of Examples 1 to 5 and Comparative Example 1, the laminated film immediately after laminating the sealant layer and the base film was taken out, and the surface of the sealant layer The coefficient of static friction and the amount of lubricant on the surface of the sealant layer were evaluated.
The amount of lubricant on the surface of the sealant layer was measured as follows.
The static friction coefficient on the surface of the sealant layer was measured according to JIS P 8147 (1994) for the sealant layers.
The amount of lubricant on the surface of the sealant layer was determined as follows.
Extraction was performed for 1 minute with 10 ml of chloroform as the extraction solvent for a surface area of 100 cm ^{2 of the} sealant layer. Thereafter, the recovered extract was injected into a gas chromatograph / mass spectrometer (manufactured by Agilent) for quantitative analysis. The analysis conditions were SIM measurement, and the designated ions were m / z = 59, 72, 337. In addition, an erucic acid amide reagent (Tokyo Kasei Kogyo Co., Ltd.) was adjusted to an erucic acid amide standard solution with chloroform at three concentrations. A peak area was obtained from an ion chromatogram of m / z = 59, and a calibration curve was prepared. Using this calibration curve, the concentration was calculated from the peak area of the extract of each film, and further converted into the weight of erucamide per 1 m ^{2 of} film using the area in the frame.

・ Measurement of static friction coefficient and amount of lubricant of bag-shaped packaging material after bag making In the manufacturing method of the fillers of Examples 1 to 5 and Comparative Example 1, the bag-shaped packaging material after bag making and before the filling step is extracted. The coefficient of static friction on the surface of the sealant layer and the amount of lubricant on the surface of the sealant layer were evaluated.
The amount of lubricant on the surface of the sealant layer was measured as follows.
The static friction coefficient on the surface of the sealant layer was measured according to JIS P 8147 (1994) with respect to the static friction coefficient between the surfaces of the sealant layers.
The amount of lubricant on the surface of the sealant layer was determined as follows.
Extraction was performed for 1 minute with 10 ml of chloroform as the extraction solvent for a surface area of 100 cm ^{2 of the} sealant layer. Thereafter, the recovered extract was injected into a gas chromatograph / mass spectrometer (manufactured by Agilent) for quantitative analysis. The analysis conditions were SIM measurement, and the designated ions were m / z = 59, 72, 337. In addition, an erucic acid amide reagent (Tokyo Kasei Kogyo Co., Ltd.) was adjusted to an erucic acid amide standard solution with chloroform at three concentrations. A peak area was obtained from an ion chromatogram of m / z = 59, and a calibration curve was prepared. Using this calibration curve, the concentration was calculated from the peak area of the extract of each film, and further converted into the weight of erucamide per 1 m ^{2 of} film using the area in the frame.

・ Measurement of the amount of lubricant in the bag-shaped packaging material immediately before filling the contents In the method for producing the fillers of Examples 1 to 4 and Comparative Examples 1 and 2, the bag-shaped packaging material immediately before filling the contents was extracted, and the surface of the sealant layer was removed. The amount of lubricant was measured.
The amount of lubricant on the surface of the sealant layer was measured as follows.
The static friction coefficient on the surface of the sealant layer was measured according to JIS P 8147 (1994) with respect to the static friction coefficient between the surfaces of the sealant layers.
The amount of lubricant on the surface of the sealant layer was determined as follows.
Extraction was performed for 1 minute with 10 ml of chloroform as the extraction solvent for a surface area of 100 cm ^{2 of the} sealant layer. Thereafter, the recovered extract was injected into a gas chromatograph / mass spectrometer (manufactured by Agilent) for quantitative analysis. The analysis conditions were SIM measurement, and the designated ions were m / z = 59, 72, 337. In addition, an erucic acid amide reagent (Tokyo Kasei Kogyo Co., Ltd.) was adjusted to an erucic acid amide standard solution with chloroform at three concentrations. A peak area was obtained from an ion chromatogram of m / z = 59, and a calibration curve was prepared. Using this calibration curve, the concentration was calculated from the peak area of the extract of each film, and further converted into the weight of erucamide per 1 m ^{2 of} film using the area in the frame.

  Table 1 shows the measurement results.

  In the manufacturing method of the filling material of Examples 1-5 and Comparative Example 1, safety and hygiene, bag-making suitability 1, bag-making suitability 2, and filling suitability were evaluated.

・ Evaluation of safety and hygiene In the methods for producing the fillings of Examples 1 to 5 and Comparative Example 1, the bag-shaped packaging material immediately before filling the contents was extracted, and the safety was determined from the measurement result of the amount of lubricant on the surface of the sealant layer. Hygiene was evaluated. The evaluation criteria are shown below.
Circle: The lubricant on the surface of the sealant layer is 0.1 mg / m ² or less. Cross: The lubricant on the surface of the sealant layer is 0.1 mg / m ² or less.

-Evaluation of bag-making aptitude 1 (blocking) In the bag-making process of the manufacturing method of the fillings of Examples 1 to 5 and Comparative Example 1, the sealant layer and the base material when the laminated film is conveyed from the wound roll shape The occurrence of blocking due to close contact with the nylon film, which was a film, was confirmed and evaluated. The evaluation criteria are shown below.
Circle mark: Blocking is not confirmed. Triangle mark: Blocking is partially confirmed but within the allowable range. X: Blocking due to adhesion between the sealant layer and the substrate film is confirmed.

-Evaluation of bag-making aptitude 2 (displacement) In the manufacturing method of the fillings of Examples 1 to 5 and Comparative Example 1, the bag-shaped packaging material after the bag-making process is extracted, and the seal width deviation in the heat-sealed part, the printed pattern The deviation was confirmed and evaluated. The evaluation criteria are shown below.
Circle mark: Misalignment of seal width and printed pattern are not confirmed Triangle mark: Misalignment of seal width and misalignment of printed pattern are confirmed, but within allowable range X: Misalignment of seal width, misalignment of printed pattern is confirmed , Defective product level

-Evaluation of filling suitability In the manufacturing method of the filling material of Examples 1-5 and the comparative example 1, the bag-like packaging material after a bag making process was extracted, and filling suitability was evaluated by opening an opening part. The evaluation criteria are shown below.
Circle mark: The opening can be easily opened. Triangle mark: The opening can be opened by applying a little force. Within the allowable range. X: The opening cannot be opened.

  Table 2 shows each evaluation result.

From the evaluation results of Table 2, in the method for producing the packing of Examples 1 to 5, the amount of lubricant immediately before filling the contents can be reduced by providing a heating step immediately before the contents, and the packing according to the present invention. It was confirmed that safety and hygiene can be imparted to the filler by the production method. However, in the manufacturing method of the filling material of Example 5, the adhesive coating amount is about 135 times as small as the lubricant kneading amount, so that the surface of the sealant layer on the inner surface of the bag-shaped packaging material just before filling the contents The amount of lubricant per unit area could not be 0.1 mg / m ² or less, and high safety and hygiene could not be imparted to the filling. In the method for producing the filler of Comparative Example 1, since there was no heating step immediately before filling the contents, the lubricant remained on the surface of the sealant layer to some extent, and safety and hygiene were not obtained.

In the case of the method for producing the filler of Example 4 having a very large amount of lubricant kneaded from the evaluation results shown in Table 2, when the aging temperature is 30 ° C., a large amount of the lubricant remains bleed out on the surface of the sealant layer. Thus, some defects such as printing misalignment were confirmed in the bag making process. Therefore, it is necessary to keep the aging temperature after lamination high, contrary to the case where the amount of lubricant kneading is small. Moreover, in the manufacturing method of Example 4, the amount of lubricant is large, but the amount of adhesive applied is also 5.7 g / m ² , which is about 200 times the amount of adhesive kneading. The lubricant on the surface of the sealant layer enters the adhesive layer from the inside of the sealant layer by heating to 60 ° C. immediately before filling the contents. Therefore, it was confirmed that the method for producing the filler of Example 4 showed high safety and hygiene.

  From the evaluation results shown in Table 2, the methods for producing the fillings of Example 2 and Example 3 are in a situation where some defects are caused in bag making suitability 1 and filling suitability. With regard to the method for producing the filler of Example 2, the amount of adhesive applied was about 350 times that of the amount of lubricant kneaded, so that even after aging at room temperature, the time passed after lamination. The lubricant is incorporated into the sealant interior and the adhesive layer. From this, it is considered that in Example 2 where the amount of the lubricant was originally reduced, the amount of the lubricant on the surface of the sealant layer after bag making was small, and some problems were caused in bag making suitability 1 and filling suitability. In addition, there is no problem in the ratio of the amount of lubricant and the amount of adhesive applied in the method for producing the filler of Example 3, but since the aging temperature is set to a high 45 ° C., the surface of the sealant layer immediately after aging is used. It is considered that the amount of the lubricant is extremely small, and the bag making suitability 1 and the filling suitability are partially lowered.

DESCRIPTION OF SYMBOLS 1 Laminated film 11 Sealant layer 12 Base film 13 Adhesive layer 14 Functional layer 15 Adhesive layer 2 Bag-shaped packaging material 3 Contents 4 Filling material

Claims (7)

A method for manufacturing a filling material in which a content is filled inside a bag-shaped packaging material made of a laminated film,
Providing a sealant layer containing a lubricant on one surface, and producing a laminated film comprising an adhesive layer on one surface of the sealant layer;
Cutting the laminated film and heat-sealing the sealant layers to produce a bag-shaped packaging material having an inner surface as a sealant layer and an opening;
Opening the opening of the bag-shaped packaging material;
Heating the bag-shaped packaging material in a state where the heating temperature is in the range of 50 ° C. or higher and 80 ° C. or lower ;
Filling the bag-shaped packaging material with the contents from the opening;
A process for producing a filling comprising: sequentially sealing the contents by heat-sealing the sealant layers at the opening of the bag-shaped packaging material to form a filling. 2. The filler according to claim 1, wherein the amount of the adhesive per unit area of the laminated film is in the range of 150 to 300 times the amount of the lubricant per unit area in the sealant layer. Manufacturing method. In the step of filling the bag-shaped packaging material with the contents from the opening, the amount of lubricant per unit area of the surface of the sealant layer on the inner surface of the bag-shaped packaging material is 0.1 mg / m ² or less. The manufacturing method of the filler of Claim 1 or Claim 2. A step of aging the laminated film within a range of 25 ° C. or more and 35 ° C. or less after the step of producing the laminated film, wherein the amount of the lubricant per unit area of the sealant layer is 25 mg / m ² or less. The method for producing a filler according to any one of claims 1 to 3, further comprising: The amount of lubricant kneaded per unit area of the sealant layer exceeds 25 mg / m ² , and the laminated film is aged within a range of 40 ° C. or more and less than 50 ° C. after the step of producing the laminated film. The method for producing a filler according to any one of claims 1 to 3 , further comprising a step. The method for producing a filler according to any one of claims 1 to 5 , wherein the lubricant contained in the sealant layer of the laminated film is a fatty acid amide or an alkylene bis fatty acid amide . The method for producing a filler according to any one of claims 1 to 6, wherein the adhesive forming the adhesive layer of the laminated film is a polyester-based, isocyanate-based, or polyurethane-based adhesive .

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