JP5551488B2 - Waterproof placemat - Google Patents

Description

  The present invention relates to a waterproof place mat obtained by laminating a resin material on a crepe paper having creping, and particularly relates to a waterproof place mat having an excellent anti-slip effect.

  Placemats are used for meals in hospitals, nursing homes, and homes. Conventionally, as such a place mat, a cloth-like silk fabric having a water repellent finish has been mainly used. However, in recent years, placemats made of disposable crepe paper have come into wide use from the viewpoint of hygiene.

Patent Document 1 discloses a placemat made of synthetic fibers such as polyester and polyamide having a water-permeable layer and a water-absorbing water retaining layer. Patent Document 2 discloses an anti-slip sheet in which a resin water repellent compound is applied to the surface of a fibrous base sheet such as natural fiber or inorganic fiber, and a resin emulsion composition is further provided on the surface. Has been. In Patent Document 3, after printing foamed ink containing a capsule containing a volatile substance such as hydrocarbon in a urethane-based resin on the back surface of a non-slip sheet molded product such as food containers, cosmetics, tools, etc., about An anti-slip sheet molded article heated at 90 ° C. is disclosed. Patent Document 4 discloses a body member of a paper container in which a thermoplastic resin layer is laminated on a paper substrate, and then moisture in the paper substrate is heated and evaporated to foam the thermoplastic resin layer.
However, place mats formed from synthetic fibers such as polyester and polyamide, anti-slip sheets formed from natural fibers and inorganic fibers are washed and reused, and are inferior in terms of hygiene. .
In addition, the anti-slip sheet has a low flexibility because the resin water-repellent agent composition is applied on the surface of the fibrous base material sheet, and the resin emulsion composition as a separate member is provided thereon. The water spilled on does not diffuse uniformly, but is manufactured by a complicated manufacturing process.
Further, the anti-slip sheet molded product is not waterproof, and the body member of the paper container is not anti-slip.

JP 2005-34172 A JP-A-7-178855 JP 2009-45890 JP 2008-105747 A

  The main problem to be solved by the present invention is to provide a placemat made of disposable crepe paper that is excellent in flexibility, waterproofness, anti-slip property, and water absorption on the surface on which dishes are placed. In addition, the next challenge is to provide a simple manufacturing method that does not require the complicated process of a placemat made of disposable crepe paper that is flexible, waterproof, anti-slip, and has excellent water absorption on the surface where dishes are placed. There is to do.

[Invention of Claim 1]
A waterproof placemat with polyethylene laminated on the back of the crepe paper,
The crepe paper is creped in the CD direction,
The laminate has a waterproof layer formed by penetrating the entire area inside the back surface of the crepe paper, and protrudes from the back surface of the crepe paper, and in the MD direction with a certain valley in the CD direction perpendicular to the creping. Having a plurality of anti-slip portions extending;
The width of the valley portion in the CD direction is larger than the width of the anti-slip portion in the CD direction.
Waterproof placemat characterized by that.

[Effect]
Since the present invention has a waterproof layer made of polyethylene that penetrates the entire area inside the back surface of the crepe paper, drinking water, soup, etc. spilled on the surface on which the placemats of the placemats are placed are placed on the back surface of the placemats. There is no permeation, and it is possible to prevent drinking water, soup, etc. from leaking outside the placemat and soiling the table and clothes.
If a large amount of drinking water, soup, etc. spills on the surface of a conventional placemat, most of the drinking water, soup, etc. diffuses in the creped CD direction and moves in the MD direction. There is little diffusion, and there is a high risk of spilling out from the end of the place mat in the CD direction to contaminate the user's clothing. However, the waterproof placemat according to the present invention diffuses in the crepe paper because the structure of the waterproof layer formed by penetrating into the crepe paper becomes an obstacle to the diffusion of drinking water, soup, etc. diffusing in the crepe paper. Drinking water, soup, etc. can be spread evenly over the entire surface in the CD and MD directions. Therefore, the dirt of the user's clothes due to drinking water, soup, etc. spilled on the surface of the waterproof placemat is reduced, and the entire surface of the waterproof placemat can absorb the drinking water, soup, etc. and has excellent absorption efficiency. .
More specifically, the crepe paper on the surface of the place mat forms a small undulation in the CD direction, and drinking water, soup, etc. absorbed on the surface has a property of penetrating in the CD direction rather than MD. Since the structure of the waterproof layer has a valley portion and a non-slip portion with an interval along the MD direction, penetration into the CD direction is suppressed. For this reason, since the water absorption on the surface of the sheet is almost isotropic, the absorption efficiency is excellent.
Because it has a plurality of non-slip portions protruding from the back side of the crepe paper and extending in the MD direction with a certain valley in the CD direction perpendicular to the creping, the flexibility of the place mat in use, the table surface Excellent installation characteristics.
Since the width of the valley portion in the CD direction is larger than the width of the anti-slip portion in the CD direction, a large portion of gravity such as tableware is applied to a part of the anti-slip portion corresponding to the bottom portion of the tableware and the like during use. Since the adhesion between a part of the stopper and the table is improved and the frictional resistance is increased, the anti-slip property of the placemat is excellent.

[Invention of Claim 2]
The width of the non-slip portion in the CD direction is larger than half of the width of the valley portion in the CD direction, and the total width of the width of the anti-slip portion in the CD direction and half of the width of the valley portion in the CD direction. but waterproof mats of claim 1 Symbol placement is 3.5～10Mm.

[Effect]
According to a second aspect of the present invention, the width of the anti-slip portion in the CD direction is larger than half of the width of the valley portion in the CD direction, and the width of the anti-slip portion in the CD direction and the width of the valley portion in the CD direction. Since the total width with a half of this is 3.5 to 10 mm, it is excellent in the deformation prevention property in the vertical direction of the trough due to the horizontal external force acting in the CD direction at the time of use.

[Invention of Claim 3]
The waterproof placemat according to claim 1 or 2, wherein the width of the anti-slip portion in the CD direction is 2 to 5 mm, and the width of the valley portion in the CD direction is 3 to 10 mm.

[Effect]
The invention according to claim 3 is that the width of the anti-slip portion in the CD direction is 2 to 5 mm, and the width of the valley portion in the CD direction is 3 to 10 mm. The anti-slip property of the place mat is even better.

[Invention of Claim 4]
The waterproof placemat according to any one of claims 1 to 3 , wherein the crepe paper has a basis weight of 10 to 50 g / m ² and a height of the anti-slip portion is 10 to 40 µm.

[Effect]
The invention according to claim 4 is more excellent in flexibility and anti-slip property of the place mat since the crepe paper has a basis weight of 10 to 50 g / m ² and the height of the anti-slip portion is 10 to 40 μm. .

[Invention of Claim 5]
The waterproof placemat according to any one of claims 1 to 4 , wherein the polyethylene is linear low-density polyethylene.

[Effect]
Since the linear low density polyethylene is laminated and the waterproof layer and the anti-slip portion are formed of the linear low density polyethylene, the softening temperature is low and the tensile fracture strength is high. The waterproof layer and the anti-slip part can be easily formed, and the anti-slip part can be prevented from breaking.

[Invention of Claim 6]
A method of manufacturing a waterproof placemat in which polyethylene is laminated on the back of a crepe paper,
The crepe paper forms creping in the CD direction on the front and back surfaces of the crepe paper by dry creping,
On the back of the crepe paper, liquefied 80-150 ° C. polyethylene is curtain coated to form a laminate,
The laminated body is heated and pressed with a pair of heating and pressing rolls, and the polyethylene is infiltrated into the entire area inside the back surface of the crepe paper, a waterproof layer, and a CD projecting from the back surface of the crepe paper and orthogonal to the creping. Forming a plurality of non-slip portions extending in the MD direction with a certain valley in the direction,
The width of the valley portion in the CD direction is larger than the width of the slip prevention portion in the CD direction.
A method for producing a waterproof placemat.

[Effect]
According to a sixth aspect of the present invention, the crepe paper is formed by creping the front and back surfaces of the crepe paper in the CD direction by dry creping, and liquefied 80 to 150 ° C. polyethylene is curtained on the back surface of the crepe paper. A laminated body is formed by coating, and the laminated body is heated and pressed by a pair of heating and pressing rolls so that the polyethylene penetrates the entire area inside the back surface of the crepe paper, and protrudes from the back surface of the crepe paper and creping. And a plurality of non-slip portions extending in the MD direction with a certain valley in the CD direction perpendicular to the CD, and the width of the valley in the CD direction is larger than the width of the anti-slip portion in the CD direction Therefore, it is possible to easily manufacture a waterproof placemat having excellent flexibility, waterproofness, anti-slip property, and absorbability without requiring a complicated process.

  INDUSTRIAL APPLICABILITY The present invention can provide a place mat made of disposable crepe paper that is excellent in flexibility, waterproofness, and slip resistance. In addition, a simple manufacturing method can be provided without requiring a complicated process of a place mat made of crepe paper.

It is a reverse view of embodiment of this invention. It is an AA cross-sectional enlarged view of FIG. It is a manufacture conceptual diagram of a crepe paper. It is a manufacture conceptual diagram of a placemat.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Among the terms of the present invention, “creping” means a plurality of crimped ridges (not shown) formed on the front and back surfaces of the crepe paper when the crepe paper is peeled from the roll using a doctor. The “back side” means one side to be placed on the table or the like shown in FIG. 1, and “the width of the valley in the CD direction”, “the width of the anti-slip portion in the CD direction”, and “the height of the anti-slip portion”. "Means" T "," S ", and" H "shown in FIG.

<Embodiment>
Mats 1 embodiment, the crepe paper 2 more wrinkles in the CD direction are formed a basis weight 40 g / m ² (length 440 mm, width 290 mm, thickness 270 .mu.m) on the rear surface of the linear low density polyethylene ( A waterproof layer 3 made of LLDPE) and an anti-slip portion 4 are provided.
In FIG. 1, a place mat 1 that is actually used by the user is illustrated, but the place mat 1 is wound in a roll shape at the time of manufacture.

  The crepe paper 2 is a dry crepe, and is provided with a plurality of crimped ridges in the CD direction (front-rear direction in use). When drinking water or the like adheres to the crepe paper 2, the crepe-like creases are reduced. , And has a characteristic of extending in the MD direction (left and right direction in use).

  As shown in FIG. 2, the waterproof layer 3 made of linear low density polyethylene (LLDPE) penetrates the entire area inside the back surface of the crepe paper 2 and is formed by penetrating the inside of the back surface. The thickness of the layer 3 is about 2 to 5 μm.

The anti-slip portion 4 made of linear low density polyethylene (LLDPE) is provided extending in the MD direction perpendicular to the crimped ridge provided in the CD direction. In the embodiment,
Forty-eight anti-slip portions 4 (CD-direction width (S) 3 mm, height (H) 25 μm) are provided apart from valley portions 5 (CD-direction width (T) 4 mm).

<Crepe paper>
Although the rice tsubo of the crepe paper 2 can be determined as appropriate, the rice tsubo is more preferably 10 to 50 g / m ² , particularly 35 to 45 g / m ² .
When the rice tsubo is less than 10 g / m ² , the crepe paper 2 is thin and may break when used as the placemat 1. On the other hand, when the rice tsubo exceeds 50 g / m ² , the rigidity of the crepe paper 2 is high, and the flexibility of the place mat 1 may be hindered.

Although there is no restriction | limiting in particular about the thickness of the crepe paper 2, As thickness, 100-500 micrometers, Especially 350-450 micrometers are more suitable.
When the thickness is less than 100 μm, the tensile strength of the crepe paper 2 is small, and there is a risk of breaking when the tableware is moved on the surface of the place mat 1. On the other hand, if the thickness exceeds 500 μm, the crepe paper 2 has a high rigidity and may hinder the flexibility of the placemat 1.

Examples of the raw material pulp of the crepe paper 2 include mechanical pulps such as ground wood pulp (GP), pressure-rise ground wood pulp (PGW), and thermomechanical pulp (TMP), semi-chemical pulp (CP), and high yield of softwood. Kraft pulp (HNKP), softwood bleached kraft pulp (NBKP), hardwood unbleached kraft pulp (LUKP), hardwood bleached kraft pulp (LBKP) and other chemical pulp, and deinking pulp (DIP) and waste pulp (WP) One or more kinds of waste paper pulp can be appropriately selected and used.
Usually, chemical pulp containing no filler or foreign matter is suitable, and it is particularly preferable to use 100% by mass of NBKP, but it is also possible to partially incorporate LBKP.
In general, NBKP has a longer fiber length and a larger fiber thickness than LBKP. Therefore, the more NBKP, the higher the strength and bulkiness, and the better the water absorption and oil absorption properties attached to the front and back surfaces. -Good oil retention. When NBKP and LBKP are mixed and used, the blending amount of NBKP is preferably 70% by mass or more.

In addition, when high tensile strength is requested | required of the crepe paper 2, the crepe paper 2 can also be made into the synthetic fiber mixed paper mainly having a pulp. When chemical fibers are blended, the strength in a wet state can be increased, so that the durability of the surface when using the placemat of the present invention can be improved.
In this case, the blending amount of the pulp of the crepe paper 2 can be determined as appropriate, but is usually 10 to 85% by mass, and particularly preferably 35 to 70% by mass. If the blending amount of the pulp is too small, the absorbability, oil absorption, moisture and oil retention are deteriorated, and if it is too much, the balance between strength and thickness is difficult to be obtained, resulting in a sheet having low wiping property.
The chemical fibers to be mixed can be selected as appropriate, but it is preferable to contain crimp fibers mainly in order to ensure bulkiness. By making the crepe paper bulky, water retention between the fibers inside the sheet can be increased, more liquid can be absorbed and retained, and the absorbed liquid leaks outside the placemat. To prevent. Further, in order to ensure wet strength, compression recovery property, low dust generation property, etc., it is preferable to contain heat-fusible fibers separately from other chemical fibers and fuse the fibers in the layer. Furthermore, other chemical fibers, that is, chemical fibers other than the crimp fiber and the heat fusion fiber functioning as a binder may be included.

Examples of the crimp fiber include, for example, a crimp process (both false twist process and wooly process) in which polyester fibers, polypropylene fibers, polyethylene fibers, and polyethylene terephthalate fibers are repeatedly twisted in the opposite direction and heat treated repeatedly. It is suitable to be formed. Among these, a PET crimp fiber formed by crimping polyethylene terephthalate fiber is preferable. In addition to the fibers formed by crimping chemical fibers, natural crimp fibers such as wool can also be used.
The fineness of the crimp fiber can be determined as appropriate, but in the normal case, it is preferably 1 to 30 dtex, particularly 2 to 20 dtex. If the crimp fiber is too thin, the fiber becomes soft and does not effectively bulk, and if it is too thick, it becomes rigid and the sheet becomes hard.
The fiber length of the crimp fiber can be determined as appropriate, but it is usually 2 to 10 mm, particularly 3 to 7 mm in a normal case. If the crimp fiber is too short, the bulk is not effectively produced. If the crimp fiber is too long, entanglement tends to occur and papermaking becomes difficult.
Furthermore, although the compounding quantity of a crimp fiber can be determined suitably, it is 10-85 mass% in normal cases, and it is suitable that it is 25-60 mass% especially. When the amount of the crimp fiber is too small, the bulk does not come out, and when it is too much, the strength becomes low.

  When the crepe paper 2 is required to have high wet strength, the wet paper strength agent is mixed with 10 to 30 kg / ton of the raw pulp of the crepe paper 2 to make paper. Wet paper strength enhancers include polyacrylamide, polyvinyl alcohol, glyoxal / polyacrylamide copolymer, polyamide epichlorohydrin resin whose number of functional groups is reduced to 1/10 of the usual number, dialdehyde starch or cationic modified starch, oxidized starch, and more. Specifically, it contains a thermosetting resin consisting of a cationic polyvinylamide copolymer and a divalent aldehyde, a cationic aldehyde-modified polyacrylamide copolymer, a cationic polymer and an anionic polymer, and is highly cationic. Known ones such as those in which at least one of a molecule and an anionic polymer is hydrophobic can be used.

<Laminating agent>
As a laminating agent used on the back surface of the crepe paper 1, polyethylene (PE), polyvinyl chloride (PVC), polyvinylidene chloride film (PVDC), polyvinyl alcohol (PVA), polypropylene (PP), polyester film (PET), Polycarbonate film (PC), polystyrene (PS), polyacrylonitrile film (PAN), ethylene-vinyl alcohol copolymer (EVOH), ethylene-methacrylic acid copolymer film (EMAA), nylon (PA) can be used. However, polyethylene (PE) having high tensile fracture strength and low embrittlement temperature is suitable, and in particular, linear low density polyethylene (LLDPE) having a softening temperature of 80 to 150 ° C. and curing at room temperature is optimal. It is.

<Waterproof layer>
The waterproof layer 3 is formed by penetrating linear low density polyethylene (LLDPE) throughout the entire area inside the back surface of the crepe paper 2. The thickness of the waterproof layer 3 formed so as to penetrate into the back surface is preferably 2 to 5 μm.
When the thickness of the waterproof layer 3 is less than 2 μm with respect to the thickness of the crepe paper 2, the waterproof layer 3 may be broken when the tableware is moved on the surface of the place mat 1, and the waterproof property may not be secured. is there. On the other hand, when the thickness of the waterproof layer 3 is more than 5 μm with respect to the thickness of the crepe paper 2, the waterproof layer 3 has high rigidity and may hinder the flexibility of the placemat 1. Moreover, it is commercialized by wrapping 10m around a 45mm paper tube, and it is almost flat when used without any curl even after one month.

<Anti-slip part>
The anti-slip portion 3 is provided by projecting linear low density polyethylene (LLDPE) from the back surface of the crepe paper 2. The anti-slip part 3 has a constant interval in the MD direction perpendicular to the crimped ridges provided in the CD direction on the surface of the crepe paper 2, that is, a trough between the anti-slip part 3 and the anti-slip part 3 facing each other. 4 and a plurality of anti-slip portions 3 are provided in parallel.

Although the height H of the anti-slip | skid part 3 can be determined suitably, as height H, 10-40 micrometers, especially 20-30 micrometers are more suitable.
When the height H is less than 10 μm, the slip prevention property is inferior, and the unevenness on the table surface may not be absorbed. On the other hand, when the height H is more than 40 μm, the anti-slip portion 3 has a high rigidity and may hinder flexibility.

The relationship between the width S in the CD direction of the anti-slip portion 3 and the width T in the CD direction of the valley portion 4 can be determined as appropriate, but is preferably set as follows.
By forming the width T in the CD direction of the valley portion 4 to be larger than the width S in the CD direction of the anti-slip portion 3, a part of the anti-slip portion in which most of the gravity of the tableware corresponds to the bottom of the tableware or the like when used. Accordingly, the adhesion between the part of the anti-slip portion and the table is improved and the frictional resistance is increased, so that the anti-slip property of the placemat 1 can be enhanced.
On the other hand, when the width T in the CD direction of the valley portion 4 is increased, the valley portion 4 comes into contact with the table, and the gravity of tableware or the like is distributed to the valley portion 4 and the anti-slip portion 3 during use. Since the frictional resistance between the table and the trough 4 and the anti-slip portion 3 is relatively small, the width S in the CD direction of the anti-slip portion 3 is formed to be larger than half the width T in the CD direction of the trough 4. Is preferred.

In the embodiment, when the total width of the width S in the CD direction of the anti-slip portion 3 and the half (T / 2) of the width T in the CD direction of the valley portion 4 is 3.5 to 10 mm, The mat 1 has a high anti-slip property, and the place mat 1 does not cause ups and downs.
That is, the total width of the width S in the CD direction of the anti-slip portion 3 and the half (T / 2) of the width T in the CD direction of the valley portion 4 is 1.2-3. When it is formed to 4% (3.5 to 10 mm), the place mat 1 is excellent in flexibility and slip resistance.

<Measurement method>
The measurement of the width S in the CD direction of the non-slip portion 4, the height H of the anti-slip portion 4, and the width T in the CD direction of the valley portion 5 was performed 10 times each using a laser microscope (VK-9510 manufactured by Keyence Corporation). It is an average value of three-dimensionally measured values.
In addition, the measurement of the thickness B of the waterproof part 3 cut | disconnected the placemat 1 with the razor blade, and measured the permeation | transmission part of the linear low density polyethylene (LLDPE).

<Manufacturing method of place mat>
A method for manufacturing the placemat 1 will be described with reference to FIGS.
FIG. 3 illustrates the main part of a double felt paper machine that imparts creping to the crepe paper 2.
The wet paper 20 (rice basis weight 10 to 50 g / m ² , moisture content 70 to 90%) processed into the crepe paper 2 is placed on the bottom felt 21 and transferred, and then sandwiched between the top felt 22 and the bottom felt 21. As it is, it is inserted between the top roll 23 and the bottom roll 24 and squeezed.
The wet paper 20 (water content of 45 to 65%) after squeezing is placed on the top felt 22 and transferred, and then attached to the surface of the Yankee dryer 26 via the touch roll 25. Then, the wet paper 20 is dried by the Yankee dryer 26, becomes a dry paper 31, and a plurality of crimped crepings are applied in the CD direction while being peeled off by the doctor blade 27.

When the moisture of the wet paper 20 is squeezed between the top roll 23 and the bottom roll 24, chemicals contained in the wet paper 20 together with the moisture of the wet paper 20, short fibers of pulp, etc. To the surface.
Therefore, in the double felt paper machine, in order to remove chemicals transferred to the surface of the top felt 22 and short fibers of the pulp, a high pressure water cleaning shower 28 that sprays cleaning water on the surface of the top felt 22, A suction box 29 for removal and a squeeze roll 30 are provided.

FIG. 4 illustrates a main part of a method for manufacturing the place mat 1 by forming linear low density polyethylene (LLDPE) on the back surface of the crepe paper 2.
A liquefied linear low density polyethylene (LLDPE) 40 of 80 to 150 ° C. is applied by a curtain coater, and a linear low density polyethylene (LLDPE) 40 having a thickness of 10 to 40 μm is provided on one side of the crepe paper 2 and a laminate. Then, the laminate is inserted between a heating roll 41 heated to 150 ° C. and a pressing roll 42 in which grooves are processed in the surface circumferential direction.

The laminated body composed of the crepe paper 2 and the linear low density polyethylene (LLDPE) 40 is subjected to a pressure stress of 350 g / m ² by the heating roll 41 and the pressing roll 42 heated to a pair of surface temperatures of 95 ° C. The melt of the linear low density polyethylene (LLDPE) 40 penetrates the entire area of one side of the crepe paper 2 to form the waterproof layer 3, and the linear low density polyethylene (LLDPE) facing the groove of the pressing roll 42. 40) forms the anti-slip portion 4;
And after naturally drying for about 3 to 10 seconds at an ambient temperature of 15 to 25 ° C. to solidify the linear low density polyethylene (LLDPE) film 40, a cut line is applied every 440 mm pitch to form a roll-shaped place mat 1 is manufactured.

To confirm the effect of the present invention, the results of comparative evaluation are shown in Table 1.
<Crepe paper>
The crepe paper used in Examples and Comparative Examples was made of 100% hardwood unbleached kraft pulp (LUKP) as a raw material, and was 100 mm long × 100 mm wide × 400 μm thick and 40 g / m ^{2 of} rice basis weight.
<Waterproof layer>
The waterproof layer of the example is formed from linear low density polyethylene. In Comparative Example 2, a waterproof film is fixed to the back surface of the crepe paper.
<Anti-slip part>
The anti-slip portion of the example is formed from linear low density polyethylene.
<Evaluation of slip resistance>
Sensory evaluation was conducted on 8 people, “◎” indicates that the response was excellent when 8 people were excellent in slip prevention, and “○” indicates that the response was excellent from 6 people The situation where an answer was obtained as being excellent in flexibility was indicated as “△”, and the answer of 3 or less persons was assigned as “X”.
<Waterproof evaluation>
Drop 5cc of water on the center of the surface of the placemat (length 100mm x width 100mm) and observe the situation of water leakage from the back of the placemat 60 seconds after the dripping. “◎”, the situation where water leakage occurred was “×”.
<Evaluation of flexibility>
Sensory evaluation was conducted on 10 people. “◎” indicates that 9 people responded that they had excellent flexibility, “○” indicates that 7 people responded that they had excellent flexibility, and “○” The situation where an answer was obtained that flexibility was excellent was indicated as “x”.
<Evaluation of diffusion suppression>
Place the placemat (length 100mm x width 100mm) horizontally on the test bench, drop 1cc of water onto the center of the surface of the placemat from above 1cm, and water CD, MD after 60 seconds from the drop The directional diffusion distance (mm) was measured.

As shown in Table 1, when the width of the valley portion in the CD direction was larger than the width of the anti-slip portion in the CD direction, it was confirmed that the slip prevention property and the waterproof property were excellent.
Further, when the waterproof layer penetrates the back surface of the crepe paper, the diffusion of water in the CD direction was suppressed, and it was confirmed that the water diffused uniformly in the CD and MD directions.

  INDUSTRIAL APPLICABILITY The present invention can be used for a waterproof placemat used on a table or the like.

DESCRIPTION OF SYMBOLS 1 ... Lunch mat 2 ... Crepe paper 3 ... Waterproofing layer 4 ... Anti-slip part 5 ... Valley part 20 ... Wet paper 21 ... Bottom felt 22 ... Top felt 23 ... Top roll 24 ... Bottom roll 25 ... Touch roll 26 ... Yankee dryer 27 ... Doctor blade 28 ... High pressure water washing shower 29 ... Suction box 30 ... Squeeze roll 31 ... Dry paper 40 ... Linear low density polyethylene 41 ... Heating roll 42 ... Pressing roll

Claims (6)

A waterproof placemat with polyethylene laminated on the back of the crepe paper,
The crepe paper is creped in the CD direction,
The laminate has a waterproof layer formed by penetrating the entire area inside the back surface of the crepe paper, and protrudes from the back surface of the crepe paper, and in the MD direction with a certain valley in the CD direction perpendicular to the creping. Having a plurality of anti-slip portions extending;
The width of the valley portion in the CD direction is larger than the width of the anti-slip portion in the CD direction.
Waterproof placemat characterized by that. The width of the non-slip portion in the CD direction is larger than half of the width of the valley portion in the CD direction, and the total width of the width of the anti-slip portion in the CD direction and half of the width of the valley portion in the CD direction. but waterproof mats of claim 1 Symbol placement is 3.5～10Mm.   The waterproof placemat according to claim 1 or 2, wherein the width of the anti-slip portion in the CD direction is 2 to 5 mm, and the width of the valley portion in the CD direction is 3 to 10 mm. The waterproof placemat according to any one of claims 1 to 3 , wherein the crepe paper has a basis weight of 10 to 50 g / m ² and a height of the anti-slip portion is 10 to 40 µm. The waterproof placemat according to any one of claims 1 to 4 , wherein the polyethylene is linear low-density polyethylene. A method of manufacturing a waterproof placemat in which polyethylene is laminated on the back of a crepe paper,
The crepe paper forms creping in the CD direction on the front and back surfaces of the crepe paper by dry creping,
On the back of the crepe paper, liquefied 80-150 ° C. polyethylene is curtain coated to form a laminate,
The laminated body is heated and pressed with a pair of heating and pressing rolls, and the polyethylene is infiltrated into the entire area inside the back surface of the crepe paper, a waterproof layer, and a CD projecting from the back surface of the crepe paper and orthogonal to the creping. Forming a plurality of non-slip portions extending in the MD direction with a certain valley in the direction,
The width of the valley portion in the CD direction is larger than the width of the slip prevention portion in the CD direction.
A method for producing a waterproof placemat.

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