JP2011073281A - Kitchen paper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide kitchen paper suitable for absorbing excess oil of deep-fried food. <P>SOLUTION: The kitchen paper is formed by laminating and integrating two sheets of non-embossed crepe paper through a dispersedly arranged adhesive, wherein foaming ink foamed and expanded by heat is contained in an unfoamed state in the adhesive. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to kitchen paper.

  Kitchen paper can be used for a wide variety of purposes, such as food packaging, boiled drop lids, drip absorbents such as fresh fish, water draining, oiling, and wiping around the kitchen. One of them is kitchen paper on a plate or tray. There is a use to absorb excess oil and moisture such as fried foods. When absorbing excess oil such as deep-fried food, it absorbs oil and water quickly so as not to damage the clothes of the deep-fried food and to prevent stickiness of the deep-fried food by steam or oil from the deep-fried food. A function is required to prevent the oil etc. from returning to the fried food.

The conventional kitchen paper is well known to have an appropriate number of embossed sanitary thin papers laminated, but this conventional kitchen paper has a small contact area between the paper surface and the fried food due to the unevenness of the embossing, and the sheet. Capability of absorbing excess oil such as deep-fried foods is secured by incorporating moisture and oil into the gap between the embossments of each sheet as the main liquid absorption mechanism due to the capillary phenomenon due to the gap between fibers. ing.
However, when the above-mentioned embossed conventional kitchen paper is placed on a deep-fried food, the embossing may be crushed due to the loosening of the fiber due to liquid absorption due to its load, oil content, and moisture, and the liquid absorption due to embossing is sufficient. In some cases, it could not be demonstrated.
This problem can be improved to some extent by increasing the embossing pressure during embossing and applying embossing firmly to the paper. However, excessive embossing pressure can cause the paper to break. May cause another problem of reducing the softness and flexibility required for kitchen paper, such as manufacturing or wiping.
Then, the present inventors paid attention to the foamed ink disclosed in Patent Documents 1 and 2 below in order to improve the absorption performance of the excess oil content of the fried food without reducing the main functions such as the wipeability of kitchen paper. These foamed inks are mainly used to enhance decorativeness and design, but have found that the foaming mechanism can be usefully used for kitchen paper, and have completed the present invention.

JP2002-254588 JP-A-9-41296

  The main subject of this invention is providing the kitchen paper especially suitable in the use which absorbs the excess oil content of fried food, while having the function as a normal kitchen paper.

The present invention and effects obtained by solving the above problems are as follows.
<Invention of Claim 1>
At least one of the two crepe papers has an emboss, and these crepe papers are laminated and integrated through an adhesive applied to the embossed convex part, and in the adhesive, the foam is expanded by heat and expands. A kitchen paper comprising a foamable curable substance that hardens after expansion in an unfoamed state.

(Function and effect)
Since the present invention contains a foamable curable substance that expands and expands by applying heat in an adhesive that bonds the two crepe papers together and hardens after expansion, lay it on a tray, bat, dish, etc. When the fried food or the like is placed thereon, the foamed ink is foamed by the heat of the fried food. The foamable curable substance maintains its foamed state after foaming and changes to a cured state having elasticity, rigidity, or rigid elasticity. Therefore, the kitchen paper of the present invention is creped by foaming of the foamable curable substance. A gap between the papers is widened, and a gap is formed between the two crepe papers to absorb and retain oil from fried foods, and is maintained.
In particular, in the present invention, since the foamable curable substance is contained in the adhesive applied to the convex portion of the emboss, the adhesive portion acts as a large number of pillars and wall pillars to support the fried food.

  Also, the adhesive containing the foamable curable substance penetrates into the paper layer of the crepe paper (inside of the crepe paper, not between the two crepe papers) when applying to the crepe paper, printing, etc. The adhesive-applied portion has extremely high shape retention as compared to an embossed convex portion formed only of paper, and the gap is held without being crushed even by a load of fried food or the like.

  On the other hand, kitchen paper is generally sold as rolls and bundles, so there is a problem of transportation when it is excessively bulky, but in the present invention, the foamable curable substance is not foamed in the adhesive. Therefore, it is not inferior to conventional kitchen paper in handling when not in use such as during transportation.

  Moreover, in the present invention, since the foamed ink is contained in an unfoamed state in the adhesive disposed on the embossed convex portion, at the time of other use of kitchen paper for wiping off water, dirt, dust, etc. The function is the same as the conventional embossed kitchen paper.

  Furthermore, in the present invention, a crepe paper having a crepe is used, and an adhesive is disposed on the embossed convex portion. As a result, even if a part of the foamable curable material that touches a heat source such as fried food is foamed, the crepe and emboss of the part to which the adhesive is not applied is extended, so that the foamable curable material is foamed in a part of the paper surface. Even kitchen paper is not torn.

<Invention of Claim 2>
2. The kitchen paper according to claim 1, wherein the foamable curable substance foams at 90 to 200 ° C., and the foaming increases the paper thickness by 100 μm or more as compared to before foaming.

(Function and effect)
The temperature of general oil when frying fried food is around 180 ° C., and the present inventors have found that when fried food is taken out from oil at this temperature, the temperature of the fried food decreases to about 100 to 120 ° C. I know. Accordingly, when the foamable curable substance is foamed at 90 to 200 ° C. as in the present invention, it is particularly suitable for use in absorbing excess oil in fried foods.

  On the other hand, kitchen paper has very few opportunities to come into contact with oil and water at 90 ° C or higher except for applications where excess oil in deep-fried foods is absorbed. In this range, foamed ink is not intended for use in other applications. Without foaming, it can be handled in the same way as conventional kitchen paper when wiping.

<Invention of Claim 3>
The paper thickness of the entire kitchen paper is 700 μm or more, the basis weight of each crepe paper is 10 to 42 g / m ² , and the density is 2.5 × 10 ^{4 to} 4.2 × 10 ⁵ g / m ^3. The kitchen paper of 1 or 2.

(Function and effect)
When the basis weight and density of each crepe paper are within the above ranges within the paper thickness range of the kitchen paper, the liquid absorption rate when the voids are formed by foaming of the foamable curable substance is excellent and flexible. It is soft and can be wiped off firmly.

<Invention of Claim 4>
The area of one adhesive provision part is 1.0-4.0 mm < ² >, and the distance between these adhesive provision parts is 1.0-5.0 mm, The any one of Claims 1-3 Kitchen pens listed in

(Function and effect)
Within the scope of the present invention, a sufficient space is secured between the crepe papers when the foamable curable substance is foamed. In addition, when the fried food is placed, the foamed adhesive portion formed by the foamed ink in contact with the foamed foam has a sufficient scattered density. As a result, the deep-fried food can be sufficiently supported, and the gap is not reliably crushed.
Furthermore, if it is said range, the softness and suppleness as the whole kitchen paper can fully be ensured.

<Invention of Claim 5>
On the other hand, the ratio of the total area of the adhesive provision part with respect to a paper surface is 5 to 30%, The kitchen paper of any one of Claims 1-4.

(Function and effect)
An effect similar to that of the fourth aspect is obtained.

<Invention of Claim 6>
The kitchen paper according to any one of claims 1 to 5, wherein a lipophilic base is supported on any surface of each of the two sheets of crepe paper.

(Function and effect)
By supporting the oleophilic oil agent, the affinity between the oil and the crepe paper is improved, thereby improving the oil absorption speed.

<Invention of Claim 7>
The said crepe paper is strip | belt-shaped, and the said strip | belt-shaped crepe paper to which the perforation line for cutting over the width direction was arrange | positioned in the longitudinal direction at predetermined intervals is wound in roll shape. Kitchen paper as described in

(Function and effect)
Kitchen paper in which crepe paper is rolled up is easy to manufacture. In addition, since the kitchen paper of the present invention contains the foamable curable substance in an unfoamed state, it can have a winding length equivalent to that of the conventional embossed kitchen paper, but the excess oil content such as fried food This is advantageous in that a wide space can be formed between crepe papers due to its bulkiness when absorbing the like. In other words, the transportability is equivalent to that of conventional kitchen paper, but has an advantage that it is superior to conventional kitchen paper when used for absorbing excess oil.

  As described above, according to the present invention, kitchen paper that is particularly suitable for use in absorbing excess oil content of deep-fried food is provided while having a function as normal kitchen paper.

It is a perspective view for demonstrating the kitchen paper X1 of this invention. It is sectional drawing of the kitchen paper X1 of this invention. It is other sectional drawing of the kitchen paper X1 of this invention. It is a perspective view of the roll form of the kitchen paper X1 of this invention.

Next, an embodiment of the kitchen paper of the present invention will be described. The kitchen paper X1 of this Embodiment is shown in FIGS.
As shown in FIGS. 1 to 3, the kitchen paper X1 has adhesives 3, 3,... In which two crepe papers 1, 2 having embosses E, E,. Are integrated with each other. In the adhesive, a foamable curable substance that expands by heat and expands and cures after expansion is contained in an unfoamed state. In the illustrated embodiment, embossing is given to each of the crepe papers 1 and 2, but in the present invention, embossing may be given to either one. However, it is preferable that both have embossing as in the illustrated example.

  In the present invention, as described above, the adhesives 3, 3,... Are arranged on the embossed protrusions Et, Et,. This makes it possible to form a gap between the crepe papers by foaming of the foamable curable substance, and the formed gap exhibits a sufficient amount of liquid absorption. In addition, in the kitchen paper of this invention, Preferably, it is the form by which the adhesive agents 3, 3, ... are provided to all the embossing convex parts Et, Et ..., However, It is not limited to this. The adhesives 3, 3,... May be applied only to some embossed protrusions Et, Et.

  In the application mode of the adhesives 3, 3,. The

Here, the shape of one adhesive provision part is not limited. Of course, if the adhesive 3 is applied to the whole (entire surface) of one embossed protrusion Et, it depends on the shape of one embossed protrusion Et, but the shape of the embossed protrusion Et, Et, The shape of the adhesive application portion does not necessarily need to match. The shape of one adhesive application portion 3 is not limited to the shape of the embossed protrusion Et, but may be an appropriate shape such as a short line, square, rectangle, triangle, polygon, circle, ellipse, or star. However, it is desirable that the area of one adhesive application portion is 1.0 to 4.0 mm ² . Of course, if it is bonded to the whole (entire surface) of one embossed convex portion Et, the area is the same as the area of one embossed convex portion.

Moreover, when setting it as the area of the above-mentioned one adhesive provision part, it is desirable that the distance L1 between adjacent adhesive provision parts is 1.0-5.0 mm. Note that the distance L1 between the adjacent adhesive application portions means the closest distance between adjacent adhesive application portions. When one adhesive application area is less than 1.0 mm ² , the adhesion between the crepe papers becomes insufficient and the foamed ink cannot be sufficiently contained, and the effect of foaming of the foamable curable substance becomes insufficient. If it exceeds 0 mm ² , the liquid absorbency becomes poor. The reason why the distance L1 between adjacent adhesive application portions is less than 1.0 is that it is technically difficult to apply the coating itself. As a result, the retention of the voids formed is deteriorated.

  Furthermore, as for the application | coating aspect of an adhesive agent, it is desirable that the ratio of the total area of the adhesive provision part with respect to a paper surface is 5 to 30%. If it is less than 5%, the adhesion between the crepe papers becomes insufficient, and if it exceeds 30%, the bonded part is too wide, the kitchen paper becomes hard, and the liquid absorbency becomes insufficient.

  On the other hand, it is desirable that the foamable curable substance contained in the adhesive is foamed at 90 to 200 ° C. In the present invention, the foam thickness increases the paper thickness L2 by 100 μm or more compared to before foaming. Is desirable.

  Here, as for the kitchen paper X1 of this invention, it is desirable for the paper thickness L2 comparable as the conventional kitchen paper to be 700 micrometers or more. Thereby, the wiping property and intensity | strength comparable as the conventional emboss provision kitchen paper are securable.

  When the above points are arranged, the relationship between the foamable curable substance and the paper thickness in the kitchen paper X1 of the present invention is 700 μm or more before foaming, and the paper thickness L3 exceeds 800 μm due to foaming of the foamable curable substance. It is a particularly preferred form.

As a measuring method of the paper thickness, it is measured using a dial thickness gauge (thickness measuring instrument) such as “PEACOCK G type” (manufactured by Ozaki Seisakusho) under the conditions of JIS P8111. Specifically, confirm that there is no dust, dust, etc. between the plunger and the measuring table, lower the plunger on the measuring table, move the memory of the dial thickness gauge to adjust the zero point, and then Raise the plunger, place the sample on the test bench, slowly lower the plunger and read the gauge at that time. Here, before placing the material on the test table, a weight of 75 g (flat bottom surface and bottom area 30 cm ² ) is placed on the surface for 60 seconds. At this time, only the plunger is placed. The thickness is an average value obtained by performing measurement 10 times.

  Here, when the foamable curable substance foams at 90 to 200 ° C., when the external environment of the adhesive portion reaches 90 to 200 ° C. in the state of kitchen paper, more specifically, the adhesive on the paper surface. It means that the foamable curable substance foams when an object at 90 to 200 ° C. comes into contact with the part or when the kitchen paper itself is placed in an environment at 90 to 120 ° C. However, since this depends on the foaming temperature of the foamable curable substance itself, it is sufficiently achieved if the foamable curable substance foams at 90 to 200 ° C.

Furthermore, an increase in paper thickness due to foaming of the more desirable foamable curable material of kitchen paper X1 of the present invention is an increase in paper thickness of 100 μm under a load of at least 2.5 g / cm ² . In summary, the most preferable example of the kitchen paper in the present invention is that the paper thickness is 700 μm or more, preferably 500 μm or less, and the foamable curable substance foams at 90 to 200 ° C. under a load of 2.5 g / cm ^2. The thickness of the paper exceeds 800 μm.

Here, the increase in the paper thickness under the load of 2.5 g / cm ² is specifically assumed when the fried food is placed, and the kitchen paper is placed on the horizontal table G as shown in FIG. Then, a weight 10 of 75 g (flat bottom and bottom area 30 cm ² ) at 90 to 200 ° C. is placed thereon, and the paper thickness is increased when the weight is removed after 60 seconds, or 75 g (flat bottom and bottom area 30 cm ^2). ) And left in a thermostatic chamber in an environment of 90-200 ° C. for 60 seconds, and then removed from the thermostatic bath, removed the weight and measured to increase the paper thickness when measured. It can be defined as good.

<Crepe paper>
The crepe papers 1 and 2 of the present invention are known papermaking techniques for crepe paper, in which a papermaking raw material mainly composed of raw material pulp is passed through a wire part, a press part, a dryer part, a creping part and the like in the same manner as a known kitchen paper. Can be manufactured.
The crepe paper of the present invention may be a dry crepe paper or a wet crepe paper, but is preferably a crepe paper by a dry crepe method.

  The crepe papers 1 and 2 are preferably 100% pulp raw materials as the fiber raw material, and as the raw material pulp types, known pulp types used for crepe paper production are used. It does not matter whether the raw pulp is exposed or unexposed. However, bleached pulp called bleached pulp is desirable. Among the pulp raw materials, it is desirable to blend LBKP (hardwood kraft pulp) and NBKP (conifer kraft pulp) at an appropriate ratio. When using LBKP and NBKP, it is desirable that LBKP: NBKP is 0: 100 to 50:50.

The crepe papers 1 and 2 of the present invention preferably have a basis weight of 10 to 42 g / m ² and a density of 2.5 × 10 ^{4 to} 4.2 × 10 ⁵ g / m ³ . The thickness is desirably in the range of 100 to 350 μm. The basis weight and basis weight in the present invention and the specification refer to values measured based on JIS P 8113. Further, the density is a numerical value obtained by dividing the base material by the thickness. The crepe paper thickness measurement method is the same as the kitchen paper measurement method described above. Under the conditions of JIS P 8111, a dial thickness gauge (thickness measuring instrument), for example, “PEACOCK G type” (manufactured by Ozaki Seisakusho). Use to measure.

If the basis weight is less than 10 g / m ² , it will be difficult to maintain the minimum paper strength and absorption amount as kitchen paper, and if it exceeds 42 g / m ² , it will become hard and the feeling of use will be reduced. Further, when the density is less than 2.5 × 10 ⁴ g / m ³ , the absorption rate and the amount of absorption of water and oil are not sufficient, and when the density exceeds 4.2 × 10 ⁵ g / m ³ , it becomes hard and wiped off. Deterioration of the property and handling property when laid on a tray, a plate, a bat, etc. are also deteriorated.

  In addition, in the kitchen paper X1 of this invention, it is good that the crepe rate of the crepe papers 1 and 2 is 13 to 35%. The crepe rate in the present invention can be calculated by (((peripheral speed of the dryer during papermaking) − (peripheral speed of the reel)) / (peripheral speed of the dryer during papermaking) × 100).

  In the present invention, the two crepe papers need not have the same configuration. Different characteristics may be used as appropriate within the scope of the present invention.

<Emboss>
On the other hand, the embossing with respect to the crepe paper 1 and 2 can employ | adopt the known method performed by passing each crepe base paper between a pair of embossing rolls. One of the pair of embossing rolls is preferably an elastic roll made of rubber or the like, and the other is preferably a metal roll having an embossing projection. The combination of the elastic roll and the metal roll is preferable because there is no problem of adjustment of the clearance of the roll or problems such as clogging of paper dust or the like in the roll.

  On the other hand, embossing can be performed with a pair of embossing rolls heating both or one embossing roll. When the embossing roll is heated, the embossing is given more clearly and clearly.

  The heated embossing roll may be an elastic roll, but is preferably a metal roll. In addition to the fact that the metal roll has a better thermal conductivity and the effect of heating is effectively exhibited, when the metal roll is heated, it corresponds to the shape of the emboss, and is applied to the crepe base paper. This is because heat is applied and the embossing applied becomes clearer and clearer.

  In this case, the surface temperature of the heating roll can be set to an appropriate temperature. However, if the heating temperature is too high, energy loss occurs, and the foamed ink foams unintentionally when an adhesive containing foamed ink is applied. On the other hand, if the heating temperature is too high, the crepe base paper may be seized or the crepe paper to be produced may become hard.

  Here, embossing is performed so that the embossing pressure between the pair of embossing rolls is 5 to 30 kg / cm, preferably 10 to 25 kg / cm, more preferably 15 to 20 kg / cm. If the embossing pressure is too low, the effect that the embossing becomes clear may not be sufficiently exhibited. On the other hand, if the embossing pressure is too high, the crepe base paper may be torn.

  When the pair of embossing rolls is a combination of an elastic roll and a metal roll, the elastic roll preferably has a surface hardness of 40 to 70. If the Shore hardness is too low, that is, if the elastic roll surface is too soft, the sheet or the sheet fabric may be broken. On the other hand, if the Shore hardness is too high, that is, if the surface of the elastic roll is too hard, there is a possibility that embossing does not enter.

  Here, in the kitchen paper X1 of this embodiment, as shown in FIGS. 2 and 3 in particular, the positional relationship between the embosses E and E given to the crepe papers 1 and 2 is one emboss of one crepe paper 1. A so-called nested type in which the embossed protrusion Et of the other crepe paper 2 faces and faces the bottom Eb is desirable.

The so-called tip-to-tip type in which the embossed convex part of one crepe paper and the embossed convex part of the other crepe paper face each other may be used. Since the distance between the adhesive-applied portion and the deep-fried food is close, the distance from the fried food or a heat source such as oil flowing out from the deep-fried food is close, and the foamability of the foamable curable substance is improved.
Further, the nested type also has an advantage that oil or the like is effectively held in the gap even during wiping, and the absorbed oil or the like is quickly moved to the inter-sheet space.

  In the present invention, the embossed convex portion Et is the top surface of the convex portion protruding so as to approach the embossed convex portion Et, and the embossed bottom portion Eb is the bottom surface of the concave portion recessed so as to be separated from the facing crepe paper. That is.

  Here, the specific shape of one emboss and the emboss pattern drawn by those one emboss are appropriate design matters. As a specific example, one emboss can be a square or a circle, as well as a dot shape such as a rhombus, ellipse, polygon, etc. The emboss pattern can be a floral pattern, a leopard pattern, a geometric pattern pattern, etc. An appropriate pattern can be obtained.

Here, the area in the plan view of one embossed convex part in the crepe papers 1 and 2 is 0.1 to 40 mm ² , more preferably 0.25 to 4. It is 0 mm ² , particularly preferably 0.5 to 2.0 mm ² . When the area of one embossing convex part Et is too small, sufficient adhesive strength between the crepe papers 1 and 2 cannot be obtained. On the other hand, when the area of one embossing convex part Et is too large, the volume of the absorption space by embossing becomes small, so that sufficient absorption capacity cannot be obtained. The emboss depth D is an appropriate design item, but is preferably about 0.5 to 2.0 mm.

  Moreover, in the kitchen paper X1 of this form, it is desirable that the total sum of the areas of the unit embossed protrusions with respect to the one area of the kitchen paper is 5 to 30% in relation to the adhesive application portion. If it is less than 5%, the effect of embossing becomes small and the adhesion of the crepe papers 1 and 2 becomes insufficient. If it exceeds 30%, the installation area of the foodstuff becomes small and the absorption effect becomes small.

  Here, the crepe papers 1 and 2 can be bonded by a known method of embossing or embossing and bonding the crepe papers 1 and 2 with an adhesive.

<Adhesive>
The adhesive 3 for bonding the crepe papers 1 and 2 contains the foamable curable substance in an unfoamed state. As the main component of the adhesive other than the foamable curable substance, a known adhesive substrate can be used. Specific examples include acrylic resins, vinyl acetate resins, vinyl acetate-ethylene copolymer resins, urethane resins, and chlorides. A vinyl-type resin etc. are mentioned.

  For applying the adhesive to the crepe paper, a known pattern printing technique or pattern coating technique can be used. Specifically, the adhesive can be applied by gravure printing, flexographic printing, or the like.

<Foaming curable substance>
As the foamable curable substance, those used in known foamed inks and the like can be used. In addition, the foamed ink itself prepared in advance may be mixed and contained in the adhesive base material, or without using the adhesive base material, the binder component in the foamed ink functions as the adhesive base material, It may be used as an adhesive containing a foamable curable material.

  Specific examples of the foamable curable substance include microcapsules in which a core substance having a property of expanding by heat is encapsulated in a coating or shell of a thermoplastic polymer material. The particle size and the like of the microcapsule can be appropriately selected depending on the foamability of the microcapsule, the printing machine to be used, and the like, and are not particularly limited, but are approximately 10 to 50 μm.

  This type of foamable curable material maintains its expanded state when the core material expands at an appropriate temperature and the coating or shell expands. In the present invention, this expanded state, that is, the cured state may be maintained for at least about 1 hour. The cured state is preferably maintained permanently. The term “curing” as used in the present invention includes the states of elasticity, rigidity, and rigid elasticity.

  Here, it is desirable that the foamable curable material of the present invention foams at 90 to 120 ° C. This is because, as described above, the temperature of a general oil when frying is about 180 ° C., and when the fried food is taken out from the oil at this temperature, the temperature of the fried food is reduced to about 100 to 120 ° C. This is because it is particularly suitable for use in absorbing excess oil in fried foods.

Specific examples of the thermoplastic polymer material forming the microcapsule coating or shell are selected from acrylic resins such as methyl methacrylate and acrylonitrile, vinylidene chloride, polyamide, polybutadiene, urethane resins, styrene resins, and the like. Specific examples of the core substance having the property of expanding and curing by heat include hydrocarbon-based compounds such as butane and isobutane, and the like. Other organic solvents, organic substances that generate decomposition gas such as carbon dioxide gas such as sodium bicarbonate, sodium carbonate, ammonium carbonate, azide compound, hydrazide compound, nitrogen gas, and inorganic substances can be mentioned.
Examples of more specific foamable curable substances include Expancel series manufactured by Expancel, Microsphere manufactured by Matsumoto Yushi Seiyaku Co., Ltd., and the like.

  The blending ratio of the foamable curable substance can be appropriately adjusted in consideration of the foamability of the foamable curable substance and the adhesiveness of the adhesive substrate. The amount is generally 3 to 20 parts by weight with respect to 20 to 60 parts by weight of the adhesive base material.

<Lipophilic base>
On the other hand, it is desirable that the oleophilic oil agent is carried on the crepe papers 1 and 2 in order to improve the oil absorption speed of the kitchen paper X1. It is not limited which of the two crepe papers 1 and 2 is supported and on which surface the oleophilic base is supported. It may be carried on both of the two sheets, or may be carried on only one sheet. Moreover, you may carry | support on only one side of each crepe paper 1 and 2, and may carry on both surfaces. However, it is preferable that the two crepe papers 1 and 2 are supported partially or entirely on the opposing surfaces by coating or the like. The oil easily moves to the crepe paper, and the oil once absorbed is easily held, and the oil is easily held in the gap.

  Specific examples of the lipophilic oil agent include hydrocarbons, liquid paraffin, triglycerides, fatty acid amides, acrylic acid ester copolymers, sucrose esters, and isostearic acid esters. Of these, liquid paraffin and triglyceride are suitable. Liquid paraffin is excellent in terms of oxidation stability and is particularly preferably used. Among triglycerides, those composed of saturated fatty acids having 6 to 12 carbon atoms, particularly medium chain fatty acids are particularly preferred. By being saturated, it is excellent in oxidation stability, and by having 6 to 12 carbon atoms, the permeability to the sheet is improved with an appropriate molecular weight. In addition, the triglyceride form is more effective in enhancing the oil diffusion and permeability than the simple linear fatty acid.

  The content of the lipophilic oil agent is preferably 1 to 20% by weight of the weight per 1 or 2 sheets of crepe paper. If it is less than 1% by weight, a sufficient effect may not be exhibited. If it exceeds 20% by weight, the affinity will be good, and the oil will remain on the front and back surfaces of the crepe papers 1 and 2, and the gap between the two crepe papers will be lost. Oil movement may be slow.

  The method of supporting the oleophilic oil agent on the crepe papers 1 and 2 may be either internal addition or external addition. For example, if it is internally added, it is possible to adopt a method of making a paper of a raw pulp or a raw pulp slurry added with a lipophilic oil agent, and if externally added, after forming the crepe paper base paper, The method of spraying, applying and applying the oil can be employed. In the case of spraying, a known spray device that sprays the drug on the crepe paper base paper can be used, and if coating is performed, a known coating machine or printing machine can be used.

<Roll form>
Next, the kitchen paper of the present invention in a roll form will be described with reference to FIG. 4 (note that the adhesive application portion and the embossing are omitted in FIG. 4).
In the kitchen paper of the present invention, two strip-shaped crepe papers 1 and 2 are laminated and integrated with the adhesive, and this is formed into a tube core 5 having substantially the same width as the width of the crepe papers 1 and 2 in the short direction. It is desirable to be in the form of a roll by wrapping or the like (hereinafter, kitchen paper in a state where two strip-shaped crepe papers 1 and 2 are laminated and integrated with an adhesive is simply referred to as sheet 12).

  As the tube core 5, a known one used for this type of kitchen paper can be used. If a general example is shown, the outer diameter (winding diameter) L4 is 30-50 mm, and the width H is about 100-250 mm.

  The winding length of the sheet 12 can be 8.8 to 30 m, and when the tube core 5 is used, the outer diameter of the kitchen paper X2 is 90 to 130 mm. This is longer than commercial kitchen paper.

  On the other hand, as shown in FIG. 4 in particular, it is desirable that the sheet 12 of this embodiment is provided with perforation lines 6 extending in the sheet width direction at predetermined intervals L5 in the sheet longitudinal direction. The perforated lines 6, 6,... Make the sheet 12 easy to cut. The predetermined interval L5 is preferably about 48 to 250 mm. If it is less than 48 mm, it will be too small for actual use, and if it exceeds 250 mm, it will become larger compared to tableware and the like, resulting in poor usability.

  The perforation line L5 can be formed by a known perforation roll (sewing blade roll) facility. That is, in the previous stage of winding around the tube core 5, a blade row is formed by arranging a large number of blades along the width direction on a roll wider than the width of the sheet 12, and this blade row is the same as the predetermined interval L5. By rotating a plurality of perforation rolls provided in the circumferential direction of the roll at a pitch and bringing them into contact with the traveling sheet 12, perforation lines 6 extending in the width direction of the sheet 12 are formed at predetermined intervals L5 in the longitudinal direction. can do.

  In addition, as for the kitchen paper X2 of this form, it is suitable that the perforation line 6 is more than a double line like the example of illustration. In forming a plurality of perforation lines, the perforation roll equipment provided with perforation rolls of appropriate multiple blade rows may be used. In this case, the perforation line 6 does not need to be doubled over the entire sheet width direction. For example, only the width direction side portion of the sheet 12 may be doubled.

  Further, in the case where the perforation line 12 is double, referring to Japanese Patent Application Laid-Open No. 2003-276936, for example, the cut part is staggered, or the end part of the cut part of one perforation line and the cut part The angle formed by the perforation line with respect to the straight line connecting the end part of the cut part of the other perforation line closest to the end of the perforation can be made to be easy to cut, for example.

  Here, the kitchen paper X2 of this embodiment preferably has a tensile strength in the sheet longitudinal direction at the perforation line 6 of 100 to 500 cN. If the tensile strength in the longitudinal direction of the sheet at the perforation line 6 is 100 cN or more, unintentional division at the perforation line 6 at the time of sheet unwinding is reliably prevented. On the other hand, when the tensile strength in the longitudinal direction of the sheet at the perforation line 6 is 500 cN or less, the sheet 12 can be reliably and easily cut at the desired perforation line 6 to be cut.

  Here, “tensile strength” means the tensile strength at the time of drying measured in accordance with the tensile property test method defined in JIS P8113. This means not the tensile strength of the sheet 12 itself, that is, the sheet 12 without the perforation line 12, but the tensile strength measured across the perforation line 6 with respect to the sheet 12 with the perforation line 6.

  The tensile strength in the longitudinal direction at the perforation line 6 can be adjusted by adjusting the tie length that is the connecting portion at the perforation line 6 and the cut length that is the same dividing portion, or between the tie length and the cut length. This can be done by adjusting the tie cut ratio, which is the ratio. More specifically, it can be adjusted by replacing with a perforation roll having a blade row having a desired tie cut length and tie cut ratio. The tensile strength is adjusted by adjusting the pressing linear pressure of the perforation roll to the sheet 1a (pressing force (kgf / cm) on the sheet 12 per unit width of the sheet) or the winder speed (winding of the sheet 1a). The speed can also be adjusted.

  On the other hand, in the kitchen paper X2 of this embodiment, the ratio of the tensile strength in the sheet longitudinal direction at the perforation line 6 to the tensile strength in the sheet longitudinal direction of the sheet 12 itself is 1.0 to 50% (preferably 2.0). 10%) is preferable. If the ratio of the tensile strength is 50% or less, the tensile strength of the sheet portion without the perforation line 1b is relatively high. Therefore, when the sheet 12 is cut, the sheet 12 is formed in a sheet portion other than the perforation line 6. The cutting is suppressed, and the cutting can be reliably performed at the perforation line 6. On the other hand, if the ratio of the tensile strength is 1.0% or more, the tensile strength of the perforation line 6 is relatively high, so that the perforation line 1b is increased by shortening the interval between the perforation lines 6. In addition, unintentional separation at the perforation line 6 during sheet unwinding can be reliably prevented.

  Here, the tensile strength in the longitudinal direction of the sheet 12 itself is also measured in accordance with the tensile property test method defined in JIS P 8113. Of course, it is the tensile strength at the time of drying of the sheet portion without the perforation line 1b.

  In order to set the tensile strength in the longitudinal direction of the sheet at the perforation line 6 to 10 to 200 cN and the ratio of the tensile strength to 1.0 to 50%, the tie length of the perforation line 6 is set to 0. The cut length may be 0.9 to 37.5 mm and the tie cut ratio (tie: cut) may be set to 1:15 to 1: 1.

<Test example>
Subsequently, the test example regarding the especially preferable form concerning the kitchen paper of this invention is shown below.
First, Table 1 and Table 2 show the results of tests relating to paper thickness, foamability, and oil supply amount in roll-shaped kitchen paper. Table 1 shows a sample with nested embossing, and Table 2 shows an example with tip-to-tip embossing. In addition, the paper thickness of the embossed kitchen paper (2 sheets of crepe paper adhesion | attachment) generally marketed is about 700 micrometers. Here, the adjustment of the increase in paper thickness after foaming (50 μm, 100 μm, 300 μm, 500 μm) was performed by adjusting the concentration of the foamable curable substance in the adhesive and the amount of embossed protrusions.

The sample used in this test was weighed at 21 g / m ² and 28 g / m ² . In addition, when a lipophilic oil agent is applied, the oil diffusion rate increases, but the winding length, paper thickness, and absolute oil absorption amount are not affected. Therefore, in this test example, the lipophilic oil agent is not applied.

  The amount of oil absorption was measured after measuring the weight of a dry sample cut to 100 mm square, soaking the sample in salad oil (Nisshin Oilio Group Co., Ltd.) for 15 seconds, and then pulling up the weight after 25 seconds. And the value obtained by subtracting the weight of the dried sample from the measured value.

From Tables 1 and 2, the improvement in the liquid absorption amount is small with foaming of 50 μm, but when the foaming is 100 μm or more, the liquid absorption amount is remarkably improved. In addition, the oil absorption of a commercial product (conventional product) having a paper thickness of 720 μm of kitchen paper (adhesion of two crepe papers) is 680 g / m ² . From this, it can be said that it is desirable that the paper thickness before foaming is 700 μm or more, which is about the same as that of a commercially available product, and the foamability is 100 μm or more, while the transportability and handling properties are the same as the conventional products.

Next, Table 2 shows the relationship between the adhesion area ratio and the liquid absorbability in the kitchen paper of the present invention. The sample used in this test had two paper thicknesses before foaming of 720 μm, and the paper thickness was increased by 100 μm by the foamable curable substance. Further, as shown in Table 3, the crepe paper used was 21 g / m ² or 28 g / m ² . The oil absorption test is the same as the paper thickness and foamability test described above. The embossing was in a nested format.

  From Table 3, in the kitchen paper of the present invention, the difference in the oil absorption amount due to the difference in the adhesion area ratio before foaming is small, but after foaming, the adhesion area ratio is 3 to 35%, particularly 5 to 15%. There is a tendency that the oil absorption is remarkably improved. Therefore, it can be said that a preferable adhesion area ratio in the present invention is 3 to 35%, and a particularly preferable adhesion area ratio is 5 to 15%.

  Next, Table 4 shows the test results on the relationship between the rice paper weight, density, and paper thickness of the crepe paper in the kitchen paper of the present invention. Note that the crepe paper used here was obtained by forcibly peeling each adhered crepe paper after making it into kitchen paper. Accordingly, an adhesive is applied to the crepe paper.

  The absorption rate in the table is the time until the gloss disappears after 1 cc of oil is dropped on the paper. Whether it disappeared or not was judged visually. As an evaluation, it can be said that 60 seconds or less is preferable.

  The ease of tearing was judged based on whether or not 20 subjects actually used the sample for wiping and felt that it was easily broken. In the evaluation, △ indicates that 10 or more people felt that it was likely to be broken.

Many subjects with basis weights of 10 g / m ² and 17 g / m ² are likely to break during use, and the density is 2.17 × 10 ⁵ g / m ³ , 2.67 × 10 ⁵ g / m ^3. There is a tendency for the liquid absorption speed to become slow. Accordingly, the basis weight in the kitchen paper of the present invention is preferably 21 to 32 g / m ² , and the density is preferably 0.83 × 10 ^{5 to} 1.94 × 10 ⁵ g / m ³ . From Table 3, the particularly preferred basis weight and density in the kitchen paper of the present invention satisfy both of these, the basis weight is 21 to 32 g / m ² , and the density is 1.22 × 10 ^{5 to} 1.94 g. × 10 ⁵ / m ³

  DESCRIPTION OF SYMBOLS 1 ... 2 ... Crepe paper, 3 ... Adhesive provision part (adhesive), 4 ... Space | gap, 5 ... Pipe core, 6 ... Perforation line, 10 ... Weight (foodstuff etc.) 12 ... Sheet, E ... Emboss, Et ... Embossed convex part, Eb ... Embossed bottom part, L1 ... Distance between adhesive application parts, L2 ... Paper thickness of foaming curable substance unfoamed state, L3 ... Paper thickness of foaming curable substance foamed state, L4 ... Outer diameter (winding) Diameter), L5: Perforation interval, G: Horizontal table, X1, X2 ... Kitchen paper.

Claims (7)

  At least one of the two crepe papers has an emboss, and these crepe papers are laminated and integrated through an adhesive applied to the embossed convex part, and in the adhesive, the foam is expanded by heat and expands. A kitchen paper comprising a foamable curable substance that hardens after expansion in an unfoamed state.   2. The kitchen paper according to claim 1, wherein the foamable curable substance foams at 90 to 200 ° C., and the foaming increases the paper thickness by 100 μm or more as compared to before foaming. The paper thickness of the entire kitchen paper is 700 μm or more, the basis weight of each crepe paper is 10 to 42 g / m ² , and the density is 2.5 × 10 ^{4 to} 4.2 × 10 ⁵ g / m ^3. The kitchen paper of 1 or 2. The area of one adhesive provision part is 1.0-4.0 mm < ² >, and the distance between these adhesive provision parts is 1.0-5.0 mm, The any one of Claims 1-3 Kitchen pens listed in   On the other hand, the ratio of the total area of the adhesive provision part with respect to a paper surface is 5 to 30%, The kitchen paper of any one of Claims 1-4.   The kitchen paper according to any one of claims 1 to 5, wherein a lipophilic base is supported on any surface of each of the two sheets of crepe paper.   The said crepe paper is strip | belt-shaped, and the said strip | belt-shaped crepe paper to which the perforation line for cutting over the width direction was arrange | positioned in the longitudinal direction at predetermined intervals is wound in roll shape. Kitchen paper as described in

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