Oil-resistant paper storage
The oil-resistant paper storage container addresses transportability and stackability issues by using non-fluorine-based paper with defined properties, ensuring high usability and efficient pop-up processing.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2026-04-02
AI Technical Summary
Existing non-fluorine oil-resistant papers face challenges in transportability and stackability due to low basis weight, leading to susceptibility to air movement and poor pop-up processing, which affects usability and manufacturing efficiency.
The oil-resistant paper storage container uses non-fluorine-based oil-resistant paper with specified basis weight (28.0-40.0 g/m²) and dynamic friction coefficients (0.200-0.500) to enhance usability and pop-up processing, with MD and CD bending stiffness within specific ranges (3.0-18.0 μN·m²/m and 2.0-9.4 μN·m²/m) to improve stackability and ease of removal.
The solution provides an environmentally friendly oil-resistant paper storage container that ensures excellent user suitability and manufacturing efficiency, maintaining paper integrity during handling and processing.
Smart Images

Figure 2026057127000001_ABST
Abstract
Description
[Technical Field]
[0001] This invention relates to an oil-resistant paper storage container. [Background technology]
[0002] Common types of oil-resistant paper include oil-resistant paper made with fluororesin and wax paper. Among these, oil-resistant paper made with fluororesin is widely used as a material for packaging bags and containers for foods containing a lot of oil and fat, due to its good oil resistance and excellent heat resistance.
[0003] However, as attention has been drawn to the fact that perfluorinated compounds (PFAS) tend to accumulate in the body, a movement to regulate them is spreading in Europe, and a similar movement may occur in Japan.
[0004] In the Japanese market, the handling of non-fluorine oil-resistant paper is increasing. For example, Patent Document 1 discloses oil-resistant paper in which an oil-resistant layer with oil-resistant properties is formed between paper layers without forming a coating film, by forcibly impregnating an oil-resistant agent such as polyvinyl alcohol (PVA) or starch between paper layers mainly composed of pulp fibers, as an alternative to conventional fluorine-based oil-resistant agents.
[0005] Furthermore, Patent Document 2 discloses an oil-resistant sheet-like material having at least one coating layer containing starch and alkyl ketene dimer and / or alkenyl succinic anhydride provided on at least one side of a substrate, as an alternative to conventional fluorine-based oil resistant agents.
[0006] Furthermore, Patent Document 3 discloses an oil-resistant paper in which, as an alternative to conventional fluorine-based oil-resistant agents, the undercoat coating layer of the paper substrate contains oxidized starch and at least one of a fatty acid sizing agent and an alkyl ketene dimer, and the topcoat coating layer contains at least one of oxidized starch and a styrene-butadiene copolymer.
[0007] In order to actually use these oil-resistant papers, it was necessary to lower the basis weight of the paper so that it would be easy to pull out one sheet at a time from the storage box in which the oil-resistant papers were stacked, and so that it would be easy to wrap food and other items with them.
[0008] However, lowering the basis weight of the oil-resistant paper made it more susceptible to being tossed around by the air used to supply the paper to the cylinder in the processing machine that stacks the oil-resistant paper in a pop-up fashion, hindering transportability. It also affected stackability, preventing the stacked oil-resistant paper from collapsing, posing operational challenges. [Prior art documents] [Patent Documents]
[0009] [Patent Document 1] Japanese Patent Publication No. 2005-035216 [Patent Document 2] Japanese Patent Publication No. 2006-307363 [Patent Document 3] Japanese Patent Publication No. 2017-119921 [Overview of the project] [Problems that the invention aims to solve]
[0010] This invention has been made in view of these circumstances, and aims to provide an oil-resistant paper storage container that is environmentally friendly, using non-fluorine oil-resistant paper, while also being excellent in terms of suitability for use by the user and suitability for pop-up processing during manufacturing. [Means for solving the problem]
[0011] The inventors conducted thorough research and discovered that the above problems can be solved by specifying the basis weight and dynamic friction coefficient of the oil-resistant paper in an oil-resistant paper storage container in which a laminate of non-fluorine-based oil-resistant paper is folded and stacked on top of each other and housed in the internal space of a box. This led to the completion of the present invention. In other words, the present invention provides the following:
[0012] (1) The first aspect of the present invention is an oil-resistant paper storage body in which a laminate formed by laminating non-fluorine-based oil-resistant papers so as to overlap each other is housed in the internal space of a box, and the oil-resistant paper has a basis weight of 28.0 g / m 2 or more and 40.0 g / m 2 or less, and the coefficient of kinetic friction is 0.200 or more and 0.500 or less.
[0013] (2) The second aspect of the present invention is the oil-resistant paper storage body according to (1), wherein the bending stiffness of the oil-resistant paper in the MD direction is 3.0 μN·m 2 / m or more and 18.0 μN·m 2 / m or less.
[0014] (3) The third aspect of the present invention is the oil-resistant paper storage body according to (1) or (2), wherein the coefficient of static friction of the oil-resistant paper is 0.140 or more.
[0015] (4) The fourth aspect of the present invention is the oil-resistant paper storage body according to (1) or (2), wherein the bending stiffness of the oil-resistant paper in the CD direction is 2.0 μN·m 2 / m or more and 9.4 μN·m 2 / m or less.
Advantages of the Invention
[0016] According to the present invention, it is possible to provide an oil-resistant paper storage body that is excellent in both the usability for the user and the suitability for pop-up processing in manufacturing, even with an environmentally friendly non-fluorine-based oil-resistant paper.
Brief Description of the Drawings
[0017] [Figure 1] It is a perspective view showing an example of the oil-resistant paper storage body of the present invention. [Figure 2] It is a cross-sectional view showing an example of the oil-resistant paper laminate housed in the oil-resistant paper storage body of the present invention.
Modes for Carrying Out the Invention
[0018] The embodiments for carrying out the present invention will be described in detail below with reference to the drawings, but these are provided for illustrative purposes only and do not limit the present invention.
[0019] In this specification, "oil-resistant paper" means paper or nonwoven fabric that has been given a function to make it difficult for oil to pass through, and "non-fluorine oil-resistant paper" means oil-resistant paper that does not contain fluorine-based oil-resistant agents. "Oil-resistant paper storage unit" means a storage unit in which laminated oil-resistant paper is housed in the internal space of a box.
[0020] In this specification, the "MD direction" of oil-resistant paper refers to the flow direction (Machine Direction) when the oil-resistant paper is made, and the "CD direction" refers to the direction perpendicular to the MD direction (Cross Direction).
[0021] In this specification, "stackability" refers to the property of how easily the stacked oil-resistant paper collapses during transport when it is stacked in a pop-up manner during the manufacturing process. "Ease of removal" refers to how easily oil-resistant paper can be removed one sheet at a time from the opening of the oil-resistant paper storage container. "Ease of use" refers to how easy it is to wrap food with oil-resistant paper and how easy it is to handle.
[0022] Embodiments of the present invention will now be described. Note that these embodiments are merely examples of the present invention. The scope of the present invention is not limited to these embodiments.
[0023] <Greaseproof paper storage container> As an example of this embodiment, an oil-resistant paper storage body (hereinafter also simply referred to as "storage body") 1 for storing oil-resistant paper 3 will be described. Figure 1 is a perspective view showing the external appearance of the oil-resistant paper storage body 1 according to the present invention. The storage body 1 houses an oil-resistant paper laminate (hereinafter also simply referred to as "laminated body") 2 (see Figure 2) in which oil-resistant paper 3 is laminated, and has an outlet 21 in the longitudinal direction of the top surface of the storage body 1, and is composed of a storage box 20 in the shape of a roughly rectangular parallelepiped.
[0024] When using the storage unit 1, insert your fingers into the storage box 20 through the opening 21, grasp the oil-resistant paper 3 at the top, and pull it out. In the case of folding with a rotary cylinder interholder, the direction in which the oil-resistant paper 3 is removed corresponds to the MD direction of the oil-resistant paper 3, which has high tensile strength.
[0025] <Oil-resistant paper> The oil-resistant paper 3 housed in the storage body 1 of the present invention preferably has a paper base material and an oil-resistant layer, and the oil-resistant component is characterized by being non-fluorine based. Furthermore, the oil-resistant paper 3 may also have other layers such as a sealing layer, a printing layer, a water-resistant layer, or a light-shielding layer, to the extent that it does not impair its function.
[0026] The uses of oil-resistant paper 3 are not particularly limited, but examples include packaging material for oily foods such as hamburgers, hot dogs, french fries, fried chicken, and potato chips, and paper used as a liner for fried foods such as tempura.
[0027] (Paper base material) The paper base material used in oil-resistant paper 3 is obtained by papermaking a paper stock that mainly consists of pulp and contains fillers, various auxiliary agents, etc. When oil-resistant paper 3 is used in applications that come into contact with food, it is preferable to use materials for the paper base material that are approved as food additives or have obtained FDA certification, or otherwise conform to food safety standards.
[0028] As for the pulp, the following known pulps can be used in appropriate proportions. Chemical pulps made from wood such as bleached kraft pulp (NBKP) and unbleached kraft pulp (NUKP) from coniferous trees, bleached kraft pulp (LBKP) and unbleached kraft pulp (LUKP) from hardwoods, and sulfite pulp (SP); and mechanical pulps made from wood such as gland pulp (GP), refiner gland pulp (RGP), stone gland pulp (SGP), chemigland pulp (CGP), semi-chemical pulp (SCP), thermomechanical pulp (TMP), and chemothermetic pulp (CTMP). Non-wood pulp obtained from kenaf, bagasse, bamboo, hemp, straw, etc. This includes recycled paper pulp, which is made from recycled paper and has had the ink removed during the deinking process.
[0029] Among these, chemical pulps such as LBKP and NBKP, which are less prone to foreign matter contamination, are preferred, and a low amount of recycled paper pulp is also preferred. Specifically, it is preferable that the amount of chemical pulp be 80% or more, and particularly preferable that the amount of chemical pulp be 100%.
[0030] As fillers, known fillers such as talc, kaolin, calcined kaolin, clay, heavy calcium carbonate, light calcium carbonate, white carbon, zeolite, magnesium carbonate, barium carbonate, titanium dioxide, zinc oxide, silicon dioxide, amorphous silica, aluminum hydroxide, calcium hydroxide, magnesium hydroxide, zinc hydroxide, barium sulfate, calcium sulfate, and other inorganic fillers, as well as organic fillers such as urea-formaldehyde resin, polystyrene resin, phenolic resin, and fine hollow particles can be used. Note that fillers are not essential materials and may not be used.
[0031] Examples of various additives include sizing agents such as rosin, alkyl ketene dimer (AKD), and alkenyl succinic anhydride (ASA); dry strength enhancers such as polyacrylamide polymers, polyvinyl alcohol polymers, cationized starch, various modified starches, urea-formaldehyde resins, and melamine-formaldehyde resins; wet strength enhancers; yield enhancers; water drainage enhancers; coagulants; aluminum sulfate; bulk enhancers; dyes; fluorescent whitening agents; pH adjusters; defoamers; UV inhibitors; fade inhibitors; pitch control agents; and slime control agents. These can be selected and used as needed.
[0032] (oil resistant layer) The oil-resistant layer is not particularly limited as long as it is non-fluorinated, and known materials can be used. Examples include polylactic acid resins, polyvinyl alcohol resins, and starch compounds. In addition to these, the oil-resistant layer may also contain other oil-resistant resins, pigments, water-resistant agents, defoaming agents, viscosity modifiers, colorants, mold inhibitors, and other additives, as long as they do not impair its function.
[0033] Polylactic acid resins, polyvinyl alcohol resins, and starch-based compounds can be used without any particular restrictions, as long as they are used in the papermaking field.
[0034] As polylactic acid resins, poly-D-lactic acid, poly-L-lactic acid, copolymers of D-lactic acid and L-lactic acid, copolymers of these with modified forms or other repeating units, and stereocomplex-type polylactic acid which is a mixture of poly-D-lactic acid and poly-L-lactic acid can be used.
[0035] As polyvinyl alcohol-based resins, fully saponified polyvinyl alcohol, partially saponified polyvinyl alcohol, carboxyl-modified polyvinyl alcohol, sulfonic acid-modified polyvinyl alcohol, phosphate-modified polyvinyl alcohol, acetoacetyl-modified polyvinyl alcohol, etc., can be used. Although all polyvinyl alcohol-based resins are biodegradable, among these, unmodified polyvinyl alcohols such as fully saponified polyvinyl alcohol and partially saponified polyvinyl alcohol are preferred because they have superior biodegradability compared to modified polyvinyl alcohols.
[0036] As starch-based compounds, starches such as starch, oxidized starch, hydroxyesterified starch (HES), phosphate esterified starch, esterified starch, and cationized starch, as well as dextrin obtained by hydrolyzing starch, can be used. All starch-based compounds are biodegradable.
[0037] (paper thickness) The paper thickness per sheet of oil-resistant paper 3 is preferably 45 μm or more at the lower limit, more preferably 50 μm or more, and even more preferably 55 μm or more. The paper thickness is preferably 70 μm or less, more preferably 65 μm or less, and even more preferably 60 μm or less. If the paper thickness is 45 μm or more, the resistance to oil seepage when food is placed on it is good, and if it is 70 μm or less, it is possible to laminate it in a compact shape.
[0038] The paper thickness per sheet of the oil-resistant paper 3 is measured in accordance with JIS P 8118, for example, using a paper thickness gauge manufactured by Kumagai Riki Kogyo Co., Ltd. Further, the measurement is repeated 10 times (not measuring the same location 10 times but measuring 10 different locations), and the average of the measurement results is taken as the final paper thickness.
[0039] (Basis weight) The basis weight per sheet of the oil-resistant paper 3 is 28.0 g / m 2 or more and 40.0 g / m 2 or less. If the basis weight is less than 28.0 g / m 2 , the oil-resistant paper 3 is likely to be fanned by the air used when supplying the paper to the cylinder, and the paper strength is poor, so the oil-resistant paper 3 is likely to bend and shift, resulting in poor stacking property. If the basis weight exceeds 40.0 g / m 2 , the paper thickness becomes high, making it difficult to cut with the interholder, the cut surface of the oil-resistant paper 3 is inferior, and the paper strength becomes strong, resulting in poor fit to the wrapped food and poor usability.
[0040] The lower limit value of the basis weight per sheet of the oil-resistant paper 3 is more preferably 31.0 g / m 2 or more, and even more preferably 34.0 g / m 2 or more. The upper limit value is more preferably 38.0 g / m 2 or less, and even more preferably 36.0 g / m 2 or less.
[0041] The basis weight per sheet of the oil-resistant paper 3 is measured in accordance with JIS P 8124.
[0042] (Coefficient of kinetic friction) The coefficient of kinetic friction of the oil-resistant paper 3 is 0.200 or more and 0.500 or less. If the coefficient of kinetic friction is less than 0.200, the surface of the oil-resistant paper 3 is likely to slip, the pop-up property when pulling out the oil-resistant paper 3 from the oil-resistant paper storage body 1 decreases, and the take-out property is inferior. If the coefficient of kinetic friction exceeds 0.500, the resistance on the surface of the oil-resistant paper 3 becomes too large, making it difficult to pull out the oil-resistant paper 3 from the oil-resistant paper storage body 1, and the take-out property is inferior.
[0043] The lower limit value of the kinetic friction coefficient of the oil-resistant paper 3 is preferably 0.210 or more, more preferably 0.220 or more. The upper limit value is preferably 0.450 or less, more preferably 0.400 or less.
[0044] (Coefficient of static friction) The static friction coefficient of the oil-resistant paper 3 is preferably 0.140 or more. If the static friction coefficient is less than 0.140, the surface of the oil-resistant paper 3 becomes slippery, the pop-up property when the oil-resistant paper 3 is pulled out from the oil-resistant paper storage body 1 deteriorates, and the extraction property is poor.
[0045] The lower limit value of the static friction coefficient of the oil-resistant paper 3 is more preferably 0.210 or more, even more preferably 0.220 or more. The upper limit value is preferably 0.500 or less, more preferably 0.450 or less.
[0046] The kinetic friction coefficient and static friction coefficient of the oil-resistant paper 3 can be adjusted by controlling the type, coating amount, coating thickness, etc. of the oil-resistant agent applied to the paper in the manufacturing process.
[0047] The static friction coefficient and kinetic friction coefficient are determined in accordance with ISO15359:1999. As an example of the measuring device, it can be measured using the "Automatic Friction Tester NSF-100" manufactured by Nomura Shoji Co., Ltd. The measurement is performed three times for each of the MD directions on the front and back surfaces of the oil-resistant paper 3, and the static friction coefficient and kinetic friction coefficient are set as the first measured values. Three samples are prepared and the average value of the three measured values is adopted.
[0048] (Bending stiffness <MD direction>) The bending stiffness of the oil-resistant paper 3 in the MD direction (hereinafter simply referred to as "bending stiffness" <md>(Also known as ) is 3.0 μN·m 2 / m or more 18.0μN m 2 Bending stiffness is preferably less than / m. <md>3.0 μN·m 2 If the bending rigidity is less than / m, the oil-resistant paper 3 will lack sufficient stiffness, causing it to stick to oily foods when wrapped, resulting in poor usability. <md>18.0 μN·m 2 When the bending stiffness exceeds / m, the oil-resistant paper 3 becomes too stiff, making it difficult to wrap food and reducing its ease of use. <md>The lower limit value is 4.0 μN·m 2 / m or more is more preferable, and 5.0 μN·m 2 / m or more is even more preferable. The upper limit value is 15.0 μN·m 2 / m or less is more preferable, and 10.0 μN·m 2 / m or less is even more preferable.
[0049] (Flexural rigidity <CD direction>) The flexural rigidity of the CD direction of the oil-resistant paper 3 (hereinafter simply referred to as "flexural rigidity" <cd>(Also known as ) is 2.0 μN·m 2 / m or more 9.4 μN m 2 Bending stiffness is preferably less than / m. <cd>is 2.0 μN·m 2 If the bending rigidity is less than / m, the oil-resistant paper 3 will lack sufficient stiffness, causing it to stick to oily foods when wrapped, resulting in poor usability. <cd>9.4 μN·m 2 When the bending stiffness exceeds / m, the oil-resistant paper 3 becomes too stiff, making it difficult to wrap food and reducing its ease of use. <cd>The lower limit is 3.0 μN·m 2 / m or greater is more preferable, and 3.5 μN·m 2 A value of / m or higher is even more preferable. The upper limit is 8.0 μN·m 2 / m or less is more preferable, and 6.0 μN·m 2 A value of / m or less is even more preferable.
[0050] In this specification, "bending stiffness" is also called the rigidity or stiffness of paper, and is an indicator that represents the resistance to bending paper. For example, if the stiffness of the paper is low, paper feeding and ejection will not be smooth in a sheet-fed offset printing press, and the speed will not be able to be increased. Also, if the bending stiffness is outside a specified range, processing in a rotary interholder will not be smooth, and the speed will not be able to be increased. Typically, the force applied when one end of the measurement sample is fixed and bent to a certain angle is expressed in units of weight or length.
[0051] The bending stiffness of the oil-resistant paper 3 can be adjusted during the manufacturing process by controlling the type of oil-resistant agent applied to the paper, the amount applied, the thickness of the coating, etc.
[0052] Bending stiffness will be measured in accordance with ISO 2493-1 and SCAN-P29, with a bending angle of 15 degrees. As an example of a measuring device, the "Bending Stiffness Tester 2048-BF" manufactured by Kumagai Riki Kogyo Co., Ltd. will be used. Measurements will be taken three times each in the MD direction and CD direction of the oil-resistant paper 3, and the average value will be adopted.
[0053] (Manufacturing method for oil-resistant paper) Oil-resistant paper 3 can be manufactured by coating a paper substrate with an oil-resistant coating liquid and drying it. The manufacturing method (papermaking) of the paper substrate and the type of papermaking machine are not particularly limited, and known manufacturing methods (papermaking) and papermaking machines such as long-wire papermaking machines, cylinder papermaking machines, short-wire papermaking machines, gap formers, hybrid formers (on-top formers), and twin-wire papermaking machines can be selected. In addition, the pH during papermaking can be in the acidic range (acidic papermaking), pseudo-neutral range (pseudo-neutral papermaking), neutral range (neutral papermaking), or alkaline range (alkaline papermaking), and an alkaline agent may be applied to the surface of the paper layer after papermaking in the acidic range.
[0054] The method for applying the oil-resistant layer is not particularly limited and can be applied using known coating equipment and coating systems. For example, coating equipment includes blade coaters, bar coaters, air knife coaters, curtain coaters, spray coaters, roll coaters, reverse roll coaters, size press coaters, gate roll coaters, etc. Coating systems include water-based coating using solvents such as water, and solvent-based coating using solvents such as organic solvents. Since the oil-resistant paper 3 of the present invention may be used in applications that come into contact with food, etc., a water-based coating is preferable from the viewpoint of food safety.
[0055] <Oil-resistant paper laminate> Figure 2 is a perspective view showing an example of a laminate 2 made of oil-resistant paper 3, which is housed in the storage unit 1 of the present invention. The laminate 2 will be described in detail below.
[0056] The oil-resistant paper 3 is stacked alternately and folded and laminated using a rotary cylinder interholder, and stored in a storage box 20 having an opening 21 on the top. The folding method is not particularly limited, and can be a so-called pop-up type or a single-hold type, in which when one sheet is taken out from the opening during use, a portion of the next sheet is exposed outside the opening, but a pop-up type that is easy to take out with one hand is preferred.
[0057] (Storage box) The base material of the storage box 20 that houses the laminate 2 is not particularly limited, but examples include paper made from coated cardboard, chipboard, etc. The dimensions of the storage box 20, such as height, width, and length, are also not particularly limited. It is preferable to provide an opening 21 in the storage box 20 for removing the oil-resistant paper 3. [Examples]
[0058] The present invention will be described in detail below with reference to examples. However, the present invention is not limited in any way to the examples shown below.
[0059] Oil-resistant paper for Examples 1-4 and Comparative Examples 1-5 shown in Table 1 was manufactured by coating a paper substrate with an oil-resistant coating liquid and drying it. Next, the oil-resistant paper was cut into 150 mm x 270 mm sheets, and the cut oil-resistant paper sheets were folded in a V-shape to form an oil-resistant paper laminate with a stack height of 45-50 mm (300-500 sheets depending on the paper thickness of the Examples and Comparative Examples). This oil-resistant paper laminate was placed in a coated cardboard box measuring 145 mm (length) x 155 mm (width) x 55 mm (height) to prepare an oil-resistant paper storage container. The opening was 40 mm (length) x 155 mm (width).
[0060] Then, the above parameters were measured for all the oil-resistant papers in the examples and comparative examples, and the following evaluations were performed. Note that parameters other than those evaluated below were measured according to the standards or measurement methods described above.
[0061] 1. Stackability (suitability for machining) As part of the evaluation of "stackability (processing suitability)," we assessed the operability of the interholder processing machine to determine whether the oil-resistant paper could be stacked in a pop-up manner without collapsing, thereby forming a laminate. The evaluation criteria were as follows: ◎: The layers were stacked without collapsing. ○: By reducing the processing machine speed, the laminated structure could be laminated without collapsing. ×: Even after adjusting the processing machine speed, the laminated structure collapsed and could not be laminated.
[0062] 2. Cut surface (suitability for processing) As part of the evaluation of "cut surface (processing suitability)," the condition of the cut surface of 100 sheets of oil-resistant paper after cutting it to a specified sheet size was visually evaluated. The evaluation criteria are as follows: ◎: All sheets are cut in a completely detached state. ○: There was one sheet that was not separated from another sheet by a length of 2mm or less. ×: There was one or more sheets that were not separated by a length greater than 2mm, or two or more sheets that were not separated by a length of 2mm or less.
[0063] 3. Ease of removal (suitability for use) For the evaluation of "ease of removal (suitability for use)," the ease of removing oil-resistant paper from the opening of the oil-resistant paper storage unit, from the first sheet to the last, was evaluated for one box of oil-resistant paper storage units. The evaluation criteria are as follows: ◎: I was able to remove the oil-resistant paper from the first sheet to the last without any problems, and no dropback occurred. ○: Dropback occurred less than 0.6% of the time when removing the oil-resistant paper. ×: Dropback occurred at a frequency of 0.6% or more when removing sheets, or it was not possible to remove oil-resistant paper one sheet at a time.
[0064] 4. Ease of use (suitability for use) The "ease of use (suitability for use)" evaluation was conducted with 20 monitors. The ease of wrapping a hamburger with greaseproof paper was assessed by selecting either "easy to wrap" or "difficult to wrap." The evaluation was then categorized into three levels based on the number of people who selected "easy to wrap." The evaluation criteria are as follows: ◎: 15 or more people selected "Easy to wrap". ○: 10-14 people selected "Easy to wrap". ×: Fewer than 10 people selected "Easy to wrap".
[0065] 5. Overall Rating Based on the evaluation results of the four aspects mentioned above—"stackability (operability)," "cut surface (quality)," "removal (in actual use)," and "ease of use (in actual use)"—a five-point scale was used for the final evaluation. Note that Comparative Example 5 used non-fluorine-based oil-resistant paper, so its overall evaluation was "N / A." 5 points: 4 ◎ marks, no × marks. 4 points: 3 ◎ marks, no × marks. 3 points: 2 ◎ marks, no × marks. 2 points: 1 ◎, none × 1 point: 1 or more X marks
[0066] [Table 1]
[0067] As is clear from the results shown in Table 1, the oil-resistant paper or oil-resistant paper containers using oil-resistant paper in Examples 1 to 4 performed well in all evaluation items. In contrast, Comparative Examples 1 to 5 were inferior in at least one of the evaluation items.
[0068] Based on the above, it has been confirmed that, according to this embodiment, the present invention provides an oil-resistant paper storage body that is environmentally friendly, using non-fluorine oil-resistant paper, while also being excellent in terms of suitability for use by the user and suitability for pop-up processing during manufacturing. [Explanation of Symbols]
[0069] 1. Oil-resistant paper storage unit 2. Oil-resistant paper laminate 3. Oil-resistant paper 20 storage boxes 21 Dispensing opening< / cd> < / cd> < / cd> < / cd> < / md> < / md> < / md> < / md>
Claims
1. An oil-resistant paper storage container is an oil-resistant paper storage body in which a laminate is formed by stacking non-fluorine oil-resistant papers so that they overlap each other, and the laminate is housed in the internal space of the box. The aforementioned oil-resistant paper is Basis weight: 28.0 g / m² 2 40.0g / m or more 2 below, The coefficient of kinetic friction is between 0.200 and 0.
500. An oil-resistant paper storage container characterized by the following:
2. The bending stiffness of the aforementioned oil-resistant paper in the MD direction is 3.0 μN·m 2 / m or more 18.0μN・m 2 The oil-resistant paper storage body according to claim 1, characterized in that it is less than or equal to / m.
3. The oil-resistant paper storage body according to claim 1 or 2, characterized in that the static friction coefficient of the oil-resistant paper is 0.140 or more.
4. The bending stiffness of the aforementioned oil-resistant paper in the CD direction is 2.0 μN·m 2 / m or more 9.4μN・m 2 The oil-resistant paper storage body according to claim 1 or 2, characterized in that it is less than or equal to / m.
Citation Information
Patent Citations
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Oil-resistant paper
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