JP2656419B2 - Multifunctional leisure seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multifunctional leisure sheet, and more particularly, to a combination of a tubular inflation film and a non-woven fabric. The present invention relates to a multifunctional leisure seat having functions.

[0002]

2. Description of the Related Art In recent years, there has been a strong demand for spending leisure time in outdoor nature, and various picnic items, camping items, outdoor leisure items, and the like have attracted attention. Among these, at least a leisure seat for a person to sit down on the ground is required as a minimum.

Hitherto, as a leisure sheet, various plastic films, laminating cloth and a film of polyethylene film yarn, and the like have been generally used.

[0004]

However, the plastic film not only has poor fit or stability to the ground, but also has a cold feel and a poor feel. In addition, what laminated the film yarn cloth and the film, compared to a simple plastic film,
Although the above characteristics are slightly improved, they are still not sufficiently satisfactory in terms of feel, touch, etc., as compared with Japanese ancient stones.

By the way, when going out or traveling with a leisure sheet, they often carry food, drinks, cups, dishes, or other disposable dishes, and these garbage after use is garbage. They are thrown away in tourist spots, causing garbage pollution. Conventional leisure seats
These garbage pollution issues are not sufficiently considered.

Accordingly, an object of the present invention is to remarkably improve the fit to the ground, the texture, the feel, etc., and at the time of movement to the destination, as a container for accommodating the article, and from the destination. On the way back, there is a need to provide a multifunctional leisure seat that can also be used as a container for storing and bringing back garbage.

[0007]

According to the present invention, a nonwoven fabric is sandwiched on one side of a tubular blown film of a thermoplastic resin through an extruded layer of a thermoadhesive resin and one end of the nonwoven fabric is heated. Provided is a multifunctional leisure sheet characterized by comprising a sealed bag.

[0008]

The first feature of the leisure sheet of the present invention is that a tubular inflation film of a thermoplastic resin is used as a base material, and a nonwoven fabric is laminated on the film. Tubular inflation film is manufactured from thermoplastic resin by inflation film forming method, and in a flat state,
It refers to a film in which two upper and lower pieces are connected seamlessly in a tubular shape at both side edges. This base material has twice the strength as a result of the two pieces of film being superimposed, and the two pieces of film are independent, so they do not lose flexibility and have excellent fit to the ground. In addition, since the film is folded back and continuous at the side edges, there is an advantage that the film is less likely to be turned up by wind or the like.

In the present invention, a nonwoven fabric is laminated on one surface of the tubular substrate. By laminating the nonwoven fabric on the surface of the base material, the surface to be touched by human becomes fibrous and porous, and the texture and texture are remarkably improved. In addition, since the surface becomes water-absorbing and water-retaining, there is an advantage that even when liquids are spilled, they do not spread or move suddenly as in the case of a film.

Next, for the tubular film substrate,
The second feature of the present invention is that the nonwoven fabric is sandwich-laminated through an extruded layer of a heat-adhesive resin. Sandwich lamination through an extruded layer of a thermo-adhesive resin means extruding the thermo-adhesive resin into a layer between a preformed base material and a nonwoven fabric, and bonding and laminating the two through this layer. Means In the present invention, by applying this sandwich lamination, without impairing the properties of each film and nonwoven fabric, and without impairing the independence of the two pieces of the tubular film,
Lamination integration becomes possible.

[0011] That is, as a technique for bonding and laminating a plurality of materials, thermal bonding is a generalized technique. However, in a combination of a tubular film base material and a nonwoven fabric, which is the object of the present invention, heat sealing or When direct thermal bonding is performed by hot embossing or the like, one or both of the tubular film base material and the nonwoven fabric are melted, and the continuity and fiber structure of the film are destroyed, and the mechanical properties, flexibility, etc. The upper and lower pieces tend to be easily damaged, especially in the case of a tubular film substrate. On the other hand, according to the present invention, when both are sandwiched by lamination via an extruded layer of a heat-adhesive resin, these disadvantages are eliminated, and not only desirable characteristics as a sheet, but also
The characteristics of the bag can be kept as it is.

In the laminated sheet of the present invention, as described above,
Even after being laminated with the nonwoven fabric, the film substrate maintains the structure as a tube, so the formed laminated sheet is cut and one end is bottom-sealed to form a bag. As a result, as a rug, it is remarkably excellent in fit, texture, feel, etc. to the ground, and as a container for storing food, tableware or other articles when moving to the destination, and from the destination. On the way back, a multifunctional leisure seat that can be used as a container for storing and taking away garbage will be provided.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1 showing an example of a leisure sheet according to the present invention, A is an overall perspective view, and B is a line BB.
2 is a cross-sectional view of the multifunctional leisure sheet 1.
Consists of a tubular blown film 2 of a thermoplastic resin and a nonwoven fabric 4 sandwiched on one side via an extruded layer 3 of a thermo-adhesive resin. This tubular film 2 is composed of an upper piece 5 and a lower piece 6, which are connected seamlessly at side edges 7a, 7b. The thermoplastic resin nonwoven fabric 4 is laminated so as to cover the entire upper surface 5 of the tubular film 2.
The upper end 8 of this leisure sheet is an opening,
On the other hand, the lower end 9 is sealed to form a bottom seal.

In FIG. 2 showing the use state of the multifunctional leisure sheet 1 of the present invention, A shows the use state as a rug, and B shows the use state as a bag. That is, as the rug, a sheet is laid so that the nonwoven fabric 4 faces upward. The bag may be opened from the upper end 8 and an article (not shown) may be stored inside the tubular film 2.
Inside the upper end portion 8 of the upper and lower pieces 5 and 6 of the tubular film, respectively, the resin-made engaging recesses and the engaging recesses are integrally formed.
It is also possible to provide a convex portion and temporarily lock the opening of the upper end portion 8. This mechanism is useful when used as an article storage bag or as an air mat-like rug.

Referring to FIG. 3 for explaining the manufacturing process of the multifunctional leisure sheet 1 of the present invention, a heat-adhesive resin of a tubular adhesive film is provided between a supply roll 10 of a tubular inflation film and a supply roll 11 of a nonwoven fabric. Extrusion dies 1
2, the tubular blown film 2 and the thermoplastic resin non-woven fabric 4 are pulled out from both rolls 10 and 11, and the thermo-adhesive resin 3 is extruded into a layer between them. Downstream of the extrusion die 12, a pressure roller 1
3 are arranged, and the tubular inflation film 2, the extruded layer 3 of the thermo-adhesive resin, and the nonwoven fabric 4 are passed through the pressure roller 13 in a stacked state.
Lamination by thermal bonding is performed. A seal bar 14 is disposed downstream of the pressure roller 13 to seal the tubular inflation film 2 at regular intervals, that is, at desired sheet lengths, that is, to melt the upper piece 5 and the lower piece 6 of the tubular film 2. To wear. As the seal bar 14, a heat seal bar, an ultrasonic seal bar, or the like is used. The sealed laminate is cut off with a suitable cutter (not shown) before or after the sealing portion to obtain the multifunctional leisure sheet of the present invention.

(Tubular blown film)
As the tubular blown film, a film formed of any film-forming thermoplastic resin can be used. Examples of thermoplastic resin film, low-, medium-, high-density polyethylene, linear low-density polyethylene,
Olefin-based resin films such as polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-acryl ester copolymer, ionomer: polyethylene terephthalate, polybutylene terephthalate, ethylene terephthalate / isophthalate copolymer, etc. Polyester film: Polyamide film such as nylon 6, nylon 6,6, nylon 11, nylon 12, etc .: Polyvinyl chloride film: Polyvinylidene chloride film and the like. Polyolefin-based films are preferred.

These films are generally uniaxially or biaxially molecularly oriented by ballooning during inflation film formation or by subsequent mechanical stretching. Its thickness is generally 5 to 400 μm,
In particular, it is desirable to be in the range of 15 to 150 μm.

(Nonwoven Fabric) The nonwoven fabric used in the present invention can be formed from natural fibers, regenerated fibers, synthetic fibers, or a mixed fiber of two or more of these. Examples of suitable fibers are olefin resin fibers such as polypropylene: polyester fibers such as polyethylene terephthalate and ethylene terephthalate / isophthalate copolymer: polyamide fibers such as nylon 6, nylon 6,6, etc .: acrylic fibers: polyvinyl chloride fibers : Polyvinylidene chloride fiber: vinylon fiber: rayon fiber: cotton fiber and the like.

The nonwoven fabric used in the present invention may be composed of filaments or staples. These fibers may be in an unwound state or a crimped state. This nonwoven fabric may be of any nonwoven fabric structure and manufacturing method as long as the single fibers are fixed by entanglement or fusion. For example, a nonwoven fabric by a dry method or a wet method is used, and more specifically, a spun bond nonwoven fabric, a melt blown nonwoven fabric, a thermal bond nonwoven fabric, and the like are used.

For the purposes of the present invention, spunbond nonwovens are particularly suitable. As a typical example of the spunbonded nonwoven fabric, a spun and drawn synthetic resin filament is at random accumulated on a porous support, and then is prepared. This type of spunbonded nonwoven fabric is composed of continuous filaments, and has a molecular orientation given by stretching.
Particularly excellent in strength. The spunbonded nonwoven fabric may be heat-bonded with a heat-fusible synthetic fiber having a lower melting point compared to the main fiber constituent polymer, or may be produced by means of needle punching, air suction, water jet, or the like. They may be entangled with each other.

The nonwoven fabric has a thickness of 5 to 300 g / m ^2. It is particularly preferable to have a basis weight of 10 to 150 g / m ² . If the basis weight of the nonwoven fabric is smaller than the above range, the texture and feel tend to be poor, while if the basis weight is larger than the above range, the sheet tends to be bulky and the function as a bag tends to decrease. In addition, in terms of texture and strength, this nonwoven fabric is generally 0.05 to 50 denier,
In particular, it preferably has a single fiber fineness of 0.1 to 10 denier.

(Heat-adhesive resin) As the heat-adhesive resin,
A thermoplastic resin exhibiting adhesiveness to the tubular blown film and the nonwoven fabric and capable of being melt-extruded is used. The heat-adhesive resin preferably has a melting point or a softening point lower than the melting point of the film resin and the melting point of the resin of the nonwoven fabric.

Suitable examples of the heat-adhesive resin include relatively low-melting olefin resins, acid-modified olefin resins, relatively low-melting copolyester resins, relatively low-melting copolyamide resins, and the like. And the like. For example, low-density polyethylene exhibits excellent adhesion to a film or nonwoven fabric made of an olefin-based resin. In addition, the acid-modified olefin-based resin is, of course, not only for films and nonwoven fabrics made of olefin-based resin,
It shows adhesion to most fibers and films such as polyester, polyamide, acrylic, polyvinyl chloride, polyvinylidene chloride, vinylon, rayon and the like. Furthermore, the above-mentioned copolyester-based resins and copolyamide-based resins are also excellent hot melts, and can be used as an adhesive layer for many nonwoven fabrics and films.

The extruded layer of the heat-adhesive resin generally has a thickness of 5 to 2 mm.
It is preferable to provide a sandwich lamination having a thickness of 00 μm, especially 10 to 100 μm.

(Production Method) Sandwich lamination can be performed by any method known per se. For example, in order to efficiently perform thermal bonding, a tubular inflation film or a nonwoven fabric to be laminated can be pre-heated prior to lamination, or a pressure roll can be heated. Further, when the heat bonding is sufficiently performed at the temperature of the extruded layer of the extruded thermo-adhesive resin, forced cooling may be performed by a pressure roll. Furthermore, if necessary, the surface of the tubular blown film can be subjected to corona discharge treatment or anchor coated with an organic titanate or isocyanate-based anchor agent to improve the adhesiveness.

In order to seal one end of the bag-shaped laminate, it is sufficient to use a condition in which the temperature of the portion to be sealed is equal to or higher than the melting point of the tubular inflation film. When desired, the resin constituting the non-woven fabric may have a higher melting point than the resin constituting the film.

Example 1 A spunbonded nonwoven fabric made of polypropylene having a basis weight of 30 g / m ² and a single fiber fineness of 5 denier using a device shown in FIG.
A low-density polyethylene as a heat-adhesive resin was extruded to a thickness of 15 μm between the m-type high-density polyethylene tubular blown film and laminated by sandwich lamination. This laminated body was supplied to a bottom seal machine to make a leisure sheet having a length of 900 mm and a width of 600 mm.

[0028]

According to the present invention, a nonwoven fabric is sandwiched on one side of a tubular blown film of a thermoplastic resin via an extruded layer of a thermoadhesive resin, and one end thereof is heat-sealed to form a bag. By doing so, when used as a rug, it is remarkably excellent in fit and texture to the ground, touch, etc., and when moving to the destination, as a container for storing the article, and from the destination. On the way back, a multifunctional leisure seat was provided that could also be used as a container for storing and taking back garbage. Further, according to the present invention, there is obtained an advantage that a multifunctional leisure sheet can be provided with a low number of steps and high productivity using an inexpensive material.

[Brief description of the drawings]

[1] shows an example of a leisure sheet of the present invention, A is a perspective view of the whole, B is Ah in cross-sectional view taken along the line B-B
It is a perspective view showing the structure of a laminated sheet used in the present invention I.

FIG. 2 is a perspective view showing a use state of the multifunctional leisure sheet 1 of the present invention, wherein A shows a use state as a rug, and B shows a use state as a bag.

FIG. 3 is a side view for explaining a manufacturing process of the multifunctional leisure sheet 1 of the present invention.

[Explanation of symbols]

1 is a multifunctional leisure sheet, 2 is a tubular blown film of a thermoplastic resin, 3 is an extruded layer of a thermo-adhesive resin, 4 is a nonwoven fabric, 5 is an upper piece of the film, 6 is a lower piece, 7
a and 7b are side edges, 8 is an upper end of the sheet, 9 is a lower end (bottom seal), 10 is a supply roll of a tubular blown film, 11 is a supply roll of a nonwoven fabric, 1
2 is a die for extruding a thermo-adhesive resin, 13 is a pressure roller,
14 is a seal bar.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiro Kodera 1-2-1, Waki, Waki-machi, Kuga-gun, Yamaguchi Prefecture Inside Mitsui Petrochemical Industry Co., Ltd. (72) Inventor Takumi Sugawara Waki, Waki-machi, Yamaguchi Prefecture 6-1-2, Mitsui Petrochemical Industry Co., Ltd. (72) Inventor Shozo Endo 2-9-1-3, Kandasuda-cho, Chiyoda-ku, Tokyo Kamiokanai (72) Inventor Koji Ozaki Kyobashi, Chuo-ku, Tokyo 1-14-2 Shikokudan Ogi Co., Ltd.

Claims (2)

(57) [Claims] 1. A multi-layer bag comprising a nonwoven fabric sandwiched on one side of a tubular blown film of a thermoplastic resin via an extruded layer of a thermoadhesive resin and one end of which is heat-sealed. Functional leisure seat. 2. The leisure sheet according to claim 1, wherein the heat-adhesive resin has a melting point or a softening point lower than the melting point of the film resin and the melting point of the resin of the nonwoven fabric.