JP3014926B2 - Underlay sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underlay sheet for use in loading and unloading luggage when relocating a building or a house, an underlay sheet for a truck bed, or sliding movement of various rugs such as carpets. The present invention relates to an underlay sheet that is convenient for preventing the occurrence of a sheet.

[0002]

2. Description of the Related Art Conventionally, for example, when loading or unloading luggage at the time of moving a building or a residence, an underlay sheet called a curing sheet is laid on the loading and unloading path to prevent damage to the foundation and floor of the building. Then, a method is employed in which workers and transport vehicles come and go. And, as an underlay sheet for such a use, sometimes there is a case where a ready-to-use sheet is used, but conventionally, in many cases, a plurality of thin plywood boards are arranged side by side and temporarily fixed with gum tape to form a carry-in / out passage. That is the fact.

[0003] For example, in the hotel inside and Western-style rugs and carpets, wipe shoes at the entrance or foot wipe for Ma Tsu door,
Toilet mats (hereinafter simply referred to as rugs) are laid. In many cases, a rubber-based substance is lined on the back surface as a means for preventing displacement of the rug. The rug provided with such means has a certain anti-slip effect on the support surface. Such a
Liners product as for example Japanese Patent Publication 50-12207, JP-Utility Model 60-970
No. 80, No. 60-144459, a rubber sheet attached to the back side as described in JP-A-60-144459, or a rug as described in JP-A-2-157357 and JP-A-63-7179. An example in which unevenness is provided on the lower surface can be given.

[0004]

However, thin plywood has the advantage of being relatively inexpensive and lightweight, but since it is about 2 m long, a plurality of sheets are required when the carry-in / out path is long. Veneer boards must be connected and fixed to the loading / unloading path, which is not only troublesome to fix, but also causes steps to occur at the seams, and the seams often rise due to frequent movements of bogies and workers. However, in order to ensure a smooth traffic, there is a drawback that the raised portion must be corrected each time.

In addition, much work is required for the work of laying the plywood on the carry-in / carry-out path and the work of removing the plywood after the completion. Further, if the plywood is damaged at the time of carrying in / out the goods, not only the safety of the feet cannot be ensured, but also the removal is performed. There is a danger that the barbs of the damaged portion will stick during work, and there has been a strong demand in the industry for a lightweight, inexpensive and safe underlay sheet that can replace plywood.

On the other hand, plywood is not suitable for use as an underlay sheet for floors and corridors in buildings because there is a concern that the floor and corridors may be damaged, and in many cases, canvas or nonwoven sheets are used. However, since these conventional canvas and nonwoven fabric sheets have low frictional resistance with the floor or the corridor surface, even if both edges of the sheet and the front and rear ends are fixed with adhesive tape, when the transport trolley travels over the sheet, the sheet will not move. However, the sliding movement occurs little by little in the running direction, and the sliding movement accumulates, and the sheet swells like a wave on the traveling side of the transport vehicle, which not only makes the transport of the transport vehicle not smooth but also the tape that has been stopped. There is a problem that peeling is caused.

A rug having a rubber sheet or unevenness on the lower surface as described above has a certain effect of preventing sliding movement, but has a relatively small contact area with the floor surface such as a door mat. However, when the kicking action by walking acts, the mat shifts and moves, and the position shifts with each walking, making it difficult to see.
Such a situation can be improved by laminating a thick and smooth rubber sheet on the back surface, but the whole rug is heavy and hard, which makes handling difficult. In addition, the conventional anti-slip technology is not suitable for a thin rug such as a cover sheet of a chair, and when a rubber sheet is adhered, air permeability is impaired and various troubles due to poor air permeability are caused.

[0008] The present invention provides an underlay sheet having a large anti-slip effect in which the above-mentioned disadvantages have been solved.
For example, when used as an underlay sheet for loading and unloading luggage, slipping hardly occurs on the flat floor and corridor surface in the building, and the phenomenon that the sheet rises like a wave on the traveling side of the above-mentioned carriage is almost impossible. The purpose of the present invention is to provide an underlay sheet exhibiting an effect of not generating the underlay sheet.

[0009]

The present invention has solved the above-mentioned problems by providing a highly frictional mesh layer on at least the back surface of the nonwoven fabric sheet. That is, the underlay sheet for loading and unloading the luggage according to the present invention has a structure in which at least the back surface of the nonwoven fabric sheet has a lengthwise direction while each of a large number of synthetic polymer continuous filaments having a diameter of about 0.5 to 2 mm is bent and cross each other. Extends to
Is and each network-like ing is bonded at the intersection layer formation, the mesh layer is bonded under pressure to the nonwoven fabric sheet surface to the nonwoven sheet, the sliding friction resistance measured by the following measurement method is more 25kgf It is characterized by having. Note On a mirror-finished flat glass placed on a horizontal surface, 15cm ×
A sample of the underlay sheet having a size of 15 cm is placed with its mesh layer as a lower surface, and 16 cm × 16 cm and a weight of 12 cm are placed thereon.
0 g of synthetic resin plate is placed and 20 kg is placed on this synthetic resin plate.
Weight is placed on the synthetic resin plate, a string is attached to the end of the synthetic resin plate, and the string is pulled in the direction of extension of the glass surface at a speed of 2.0 cm / min, and the tension (kgf) when the sample starts to move.
Was defined as the frictional resistance value.

[0010] As a non-woven fabric serving as a base of an underlay sheet, polypropylene, polyester long-fiber non-woven fabric having a basis weight of 50 to 200 g / m ² , which is called a spunbond non-woven fabric, in terms of strength and smoothness, heat adhesion A dry nonwoven fabric having a basis weight of 50 to 200 g / m ² formed by bonding the composite fiber web sheet between fibers with a hot roll can be preferably applied, and when a particularly heavy underlay sheet is required, the basis weight is 200 g / m 2. ^It is preferable to use ^two or more needle-punched nonwoven fabrics.

As a resin of a synthetic polymer continuous filament for forming a high friction network layer on the back surface of a nonwoven fabric sheet, for example, ethylene-based resin having rubber properties after molding is used. vinyl acetate copolymer, ethylene - methyl acrylate copolymer, ethylene - acrylic acid copolymer, ethylene - ethyl acrylate copolymer, ethylene - main Tak Li <br/> Le methyl copolymer, ethylene - main Taku acrylic acid ethyl copolymer, ethylene - main Tak acrylic acid methyl - acrylic acid copolymer is applied. Then, a continuous filament having at least a surface formed of these polymers alone or another polymer as a core component is spun onto the surface of the nonwoven fabric sheet, and at least the back surface of the nonwoven fabric has a high friction network. The underlay sheet of the present invention is formed by forming a layer.

The continuous filament has a surface composed of at least the above polymer, such as a single component of the above polymer or a core-sheath type composite filament containing another resin such as a polypropylene resin or a polyester resin as a core component. Have been. The thickness of the continuous filament is preferably about 0.5 to 2 mm in the case where the continuous filament is adhered to the back surface of the underlay sheet as a mesh layer. When the thickness is 0.5 mm or less, clogging of the spinning hole is apt to occur, and spinning is not smooth, and when pressed on the nonwoven fabric sheet, sinks in the nonwoven fabric sheet, and the fiber surface of a part of the nonwoven fabric sheet is removed from the mesh space of the mesh layer. The high friction effect of the mesh layer on the floor is reduced. On the other hand, when the thickness is 2 mm or more, the amount of resin is increased more than necessary, which is not only uneconomical, but also impairs the smoothness of the back surface (the side of the mesh layer). The more preferable thickness is about 1 to 1.5 mm, and the basis weight of the mesh layer is 300 to 600 g / m ² .

The porosity of the mesh layer in a state where the continuous filaments of the mesh layer are flattened by pressure bonding to the nonwoven fabric sheet is appropriately selected depending on the use of the underlay sheet. When the sheet is used as a curing sheet for carrying in / out cargo, the porosity is 60%.
It is preferable that the porosity is 60% or more in those used for preventing displacement of various rugs. Practically, when the porosity is 80% or more, the contact area of the mesh layer with the floor surface becomes small and the anti-slip effect is reduced, and the smoothness of the mesh layer is impaired and the movement of the article on the nonwoven fabric sheet is reduced. When the transport vehicle becomes unsmooth and the porosity is 10% or less, a better anti-slip effect is exhibited, but the amount of resin increases and the cost increase rate becomes higher than the degree of performance improvement. The porosity is preferably 30 to 60% because the flexibility is lowered and the handling properties such as transportation and laying are deteriorated.
It is about.

[0014]

When the underlay sheet of the present invention having a mesh layer on the back surface of a non-woven fabric sheet is used, for example, for loading and unloading cargo, the mesh layer is used as the back surface to improve the work efficiency of laying and removing, and Not only is it convenient to form long, seamless access passages on floors and corridors of
The mesh layer exhibits excellent friction with the floor surface, especially in a weighted state, and acts as an anti-slip effect for the underlay sheet.It fits snugly on the floor or the underside of the corridor, and is used when the worker walks or the carriage is running. Prevents delusion of the seat. The nonwoven fabric surface of the underlay sheet forms a flat carry-in / out passage to facilitate walking and the passage of the bogie, thereby reducing noise during carrying-in / out work.

When the underlay sheet of the present invention having a mesh layer on both sides of a nonwoven fabric sheet is used interposed between the floor and the rug, the mesh layer on the back surface of the underlay sheet is attached to the floor surface. The displacement of the sheet is eliminated, and the mesh layer on the surface prevents the displacement of the rug with respect to the underlay sheet, thereby eliminating the displacement of the underlay sheet with respect to the floor surface, and the rug can be always maintained in an orderly laid form.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings showing the embodiments, the underlay sheet (1) of the present invention has, as shown in FIG. 1, vinyl acetate on at least the back surface of the nonwoven fabric sheet (2). 20% ethylene-vinyl acetate copolymer (EV
A) Reticulated layer formed by multiple continuous filaments (3) (3)
(4) is adhesively bonded.

Example 1 As schematically shown in FIG. 2, for example, a spinneret (10) in which a large number of spinning holes having a hole diameter of 1 mm are provided in two rows in the width direction at a pitch of 5 mm, The melt of EVA is spun from the spinning hole as a continuous filament (3) (3), and the carrier (11) having a smooth surface below the spinneret (10) is spun from the spinning continuous filament (3) ( Move in the direction of the arrow at a speed slower than the falling speed of (3), and
1) A polyester spunbond nonwoven sheet (2) having a basis weight of 100 g / m ² is supplied on top, and the nonwoven sheet (2)
The spun continuous filaments (3), (3) are drawn by drawing an irregular loop on the continuous filaments (3) (3) spontaneously dropped and spun, and the adjacent continuous filaments (3) (3) Are sequentially accumulated on the nonwoven fabric sheet (2) while intersecting, and at the time of the accumulation, the continuous filaments (3) and (3) are mutually self-fused at each intersection, and the accumulated continuous filaments (3) ( The continuous filaments (3) and (3) collected while solidification is not solidified are pressed by the roll (12) to form each continuous filament.
(3) Each continuous filament is applied to the nonwoven fabric sheet (2) with the adhesive strength of (3).
(3) Attach (3) and flatten continuous filaments (3) (3),
A net-like layer (4) having a basis weight of 350 g / m ² and a porosity of about 50% is joined to one side of a nonwoven fabric sheet (2) as shown in FIG. Underlay sheet (1)
And

Comparative Example 1 A nonwoven fabric sheet (2) was weighed on one side of a nonwoven fabric sheet (2) with a continuous fiber of 350 g / mm by a continuous filament in the same manner as in Example 1 except that a polypropylene resin was used in place of the EVA. The underlay sheet was formed by joining the m ² mesh layers. The porosity of this mesh layer was about 50%.

The underlay sheets of Example 1 and Comparative Example were cut into 15 cm × 15 cm, respectively, to form samples.
As schematically shown in FIG. 2, the two kinds of samples (20) are placed on a mirror-finished sheet glass (21) placed on a horizontal surface with the mesh layer (4) as a lower surface, and 16 cm × 16 cm, A synthetic resin plate (22) weighing 120 g is adhered to the synthetic resin plate (2).
2) Place a weight (23) of 20 kg on top and load it,
A string (24) is attached to the end of (22), and the string (24) is connected to a tension measuring device (25) via a pulley (25), and the string (2) is connected to the tension measuring device (25).
4) was gently pulled in the direction of extension of the glass surface indicated by the arrow at a speed of 2.0 cm / min, and the tension (kgf) when the sample began to move was measured as a frictional resistance value.

As a result, the friction resistance of the underlay sheet of Example 1 was 32 kgf, and the underlay sheet of the comparative example was 5 kgf.
kgf.

Next, as shown in FIG. 4, the underlay sheet (1) obtained according to the first embodiment is laid in a carry-in / out passage of the luggage, and the edge is fixed with an adhesive tape, and the upper side is fixed thereon. When the transport trolley (30) loaded with the luggage (31) was run, the underlay sheet (1) did not come off and the underlay sheet (1) swelled like a wave on the traveling side of the transport trolley (30). However, the transport trolley (30) ran quietly and smoothly, with little elongation due to load, withstood repeated use, and was able to perform laying and removing work extremely easily. FIG. 5
Shows an enlarged cross-sectional view of the underlay sheet (1), and (4) shows a mesh layer of flattened continuous filaments.

The underlay sheet obtained in the comparative example is laid in the carry-in / out passage of the luggage in the same manner as in the above embodiment, the edges are fixed with adhesive tape, and the luggage (31) is stacked thereon. When the trolley (21) was run, the underlay sheet gradually shifted with the movement of the trolley, and it was accumulated, and the underlay sheet swelled like a wave on the traveling side of the trolley (30), and the trolley traveled It was troublesome.

Example 2 As schematically shown in FIG. 6, a spinneret (10) in which a large number of spinning holes having a hole diameter of 1.5 mm are provided in a row in the width direction at a pitch of 5 mm is moved back and forth. In the same manner as in Example 1, the melt of EVA is spun from the spinning hole as continuous filaments (3) and (3), and a transporter (11) having a smooth surface below the spinneret (10). Spun continuous filament (3)
The carrier (11) is moved in the direction of the arrow at a speed lower than the drop speed of (3) and is reciprocated 10 mm in the width direction.
A needle-punched non-woven fabric sheet (2) of polyester fiber with a basis weight of 250 g / m ² is supplied onto the non-woven fabric sheet (2), and the spun continuous filaments (3) and (3) are spontaneously dropped and spun. The continuous filaments (3) and (3) are bent in a zigzag manner and sequentially accumulated on the nonwoven fabric sheet (2) while intersecting adjacent continuous filaments (3) and (3). ) (3) are self-fused to each other at each intersection, and the continuous filaments (3) (3) are rolled while the continuous filaments (3) (3) are not solidified. (12) Pressing each continuous filament
(3) Each continuous filament is applied to the nonwoven fabric sheet (2) with the adhesive strength of (3).
(3) The non-woven fabric sheet (2) as shown in FIG.
Has a basis weight of a large number of continuous filaments (3) (3) on one side of 300
The underlay sheet (1) was joined to the g / m ² mesh layer (4). The porosity of the reticulated layer (4) was 80%, and the frictional resistance measured by the above-mentioned method was 30 kgf.

Comparative Example 2 A needle-punched nonwoven fabric sheet (2) having a diameter of 1.5 was applied to one surface of a needle-punched nonwoven fabric sheet (2) in the same manner as in Example 2 except that a polypropylene resin was used in place of the EVA.
3mm in weight of continuous filament of polypropylene resin
An underlay sheet to which a net-like layer of 00 g / m ² was bonded was formed. The friction resistance of the underlay sheet was 4 kgf.

The underlay sheet (1) obtained in Example 2 and Comparative Example 2 was laid on a truck bed of a lorry, and a closet was placed on it and pushed to move the underlay sheet (1).
Although the closet could be slid and moved without detaching, in Comparative Example 2, the underlay sheet moved with the closet and swelled forward or greatly.

Example 3 A spunbond nonwoven fabric having a basis weight of 80 g / m ² was used as the nonwoven fabric sheet (2), and as shown in FIG. The underlay sheet (1) was joined to a net layer (4) having a basis weight of 250 g / m ² with EVA continuous filaments (3) (3) having a diameter of 1 mm on both sides.

This underlay sheet (1) is interposed and laid under a needle punching carpet laid in the open space, and then a table is placed thereon, and when the table is pushed and moved, the carpet is not moved and only the table is pushed and moved. Was completed. Similarly, when laid under the entrance mat, delusion of the mat caused by walking was prevented, and the form and position of the mat were always kept orderly.

[0028]

As described in detail above, the underlay sheet (1) of the present invention is provided on at least the back surface of the nonwoven fabric sheet (2).
Adhesive bonding of a reticulated layer (4) formed by many synthetic polymer continuous filaments (3) (3), which are extremely flexible compared to other polymers and have rubber properties after molding The reticulated layer (4) has a weight of 25k even on a mirror-finished sheet glass surface under load.
gf or more, the surface of the underlayer sheet (1) having a reticulated layer (4) on one side is defined as the back side, and for example, as shown in FIG. When used as a curing sheet for loading and unloading luggage by laying it on a flat floor or under the corridor, it can form a long and seamless loading and unloading passage, and it fits perfectly on the floor and the underside of the corridor. Worker walking and transport trolley (30)
Prevents the underseat sheet (1) from being perturbed when the vehicle is running, smoothes walking and the passage of the trolley, and can carry out and carry out the work efficiently and quietly.

Further, a mesh layer (4) is provided on both sides of the nonwoven fabric sheet (2).
When the underlay sheet (1) of the present invention having (4) is used with the base material interposed between the floor and the rug, the base material is a nonwoven fabric sheet (2), and the air permeability between the rug and the floor is As a result, the mesh layer (4) on the back of the underlay sheet (1) eliminates the displacement of the underlay sheet (1) itself with respect to the floor surface, and the mesh layer (4) on the front surface displaces the displacement of the rug with respect to the underlay sheet (1). To prevent

Therefore, for example, when a tatami mat is laid on the floor of a gymnasium to form a judo hall, or when a mat is laid on the floor to form a gymnasium, a net-like layer is provided between the tatami mat or the mat and the floor. (4) When an underlay sheet (1) equipped with (4) is installed and used, the inconvenience of the tatami mat or mat moving due to the intense movement of the user is eliminated, and the tatami mat or mat is always laid in order Can be held. The excellent function of the underlay sheet (1) of the present invention is as follows .
Carpets , carpets, doormats or tablecloths,
It can also be applied to prevent displacement of various types of rugs such as coasters due to external force, and exhibits an excellent effect as an underlay sheet for preventing displacement.

The underlay sheet (1) of the present invention can be manufactured efficiently by the method described in the embodiment without the need for an adhesive bonding step, so that it is inexpensive, and has a wide and long underlay sheet of about 2 m. It can be widely used in various fields for preventing slippage and preventing slippage.

[Brief description of the drawings]

FIG. 1 is a plan view of an underlay sheet of the present invention.

FIG. 2 is a simplified side view showing a method of manufacturing the underlay sheet of FIG.

FIG. 3 is a simplified explanatory diagram of a procedure for measuring a frictional resistance value.

FIG. 4 is a perspective view showing an example of using the underlay sheet of the present invention.

FIG. 5 is an enlarged cross-sectional view in the thickness direction of the underlay sheet of FIG. 3;

FIG. 6 is a simplified perspective view showing another method of manufacturing the underlay sheet of the present invention.

FIG. 7 is a plan view of an underlay sheet obtained by the manufacturing method of FIG. 4;

FIG. 8 is a plan view of an underlay sheet in which a mesh layer is formed on both sides of a nonwoven sheet.

[Explanation of symbols]

1. Underlay sheet 2. Non-woven fabric sheet 3. Continuous filament 4. Mesh layer

────────────────────────────────────────────────── ─── Continued on the front page Examiner Yurika Ashihara (56) References JP-A-8-85180 (JP, A) JP-A 1-299036 (JP, A) JP-A 6-24931 (JP, U) Sho-53-23444 (JP, U) Sho-63-95737 (JP, U) Sho-ko 45-1710 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B32B 1 / 00-35/00 A47G 27/00-27/06

Claims (3)

(57) [Claims] 1. A nonwoven fabric sheet having a diameter of about 0.5
Extending in the longitudinal direction and each of the multiple synthetic polymers continuous filament bending of ~2mm while crossing each other, and the network-like layer ing are bonded at each intersection formed, the mesh layer is a nonwoven fabric sheet surface Is applied to the nonwoven fabric sheet, and the sliding friction resistance measured by the following measurement method is 25.
An underlay sheet having a weight of at least kgf. Note On a mirror-finished flat glass placed on a horizontal surface, 15cm ×
A sample of the underlay sheet having a size of 15 cm is placed with its mesh layer as a lower surface, and 16 cm × 16 cm and a weight of 12 cm are placed thereon.
0 g of synthetic resin plate is placed and 20 kg is placed on this synthetic resin plate.
Weight is placed on the synthetic resin plate, a string is attached to the end of the synthetic resin plate, and the string is pulled in the direction of extension of the glass surface at a speed of 2.0 cm / min, and the tension (kgf) when the sample starts to move.
Was defined as the frictional resistance value. 2. A synthetic polymer continuous filament for at least the table <br/> surface, ethylene - vinyl acetate copolymer, ethylene - methyl acrylate copolymer, ethylene - acrylic acid copolymer, ethylene - Ethyl acrylate copolymer, ethylene-
Main Taku acrylic acid methyl copolymer, ethylene - main Tak acrylic acid ethyl copolymer, ethylene - main Tak acrylic acid methyl - characterized in that it is formed of a synthetic polymer soft selected from acrylic acid copolymer The underlay sheet according to claim 1, wherein 3. The basis weight of the mesh layer by a continuous filament is 2
2. The underlay sheet according to claim 1, wherein the thickness of the continuous line is from 00 to 800 g / m ² , and the continuous filament is pressed and flattened.