JP2004291549A - Board substrate made of nonwoven fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a board substrate excellent in sound absorbency in which posters or the like can be stably stuck with push-pins and thumbtacks or paste and it is possible to print directly on it even if it is made of one layer of a nonwoven fabric. <P>SOLUTION: The board substrate made of the nonwoven fabric is composed of the nonwoven fabric including a thermal fusion fiber. A film is laminated on at least one surface layer part of the nonwoven fabric. The whole of the nonwoven fabric is composed of a polyester fiber. Further, if the film is selected from films made of polyester, the board substrate also becomes excellent in recycling efficiency. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a board substrate made of a non-woven fabric containing heat-fusible fibers.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, boards and plywood made of polystyrene, polyethylene foam, or the like have been used as POP boards for advertisements displayed at bulletin boards or CD stores on which posters are pasted.
[0003]
Although boards made of polystyrene or polyethylene foam are mainly used for POP boards for advertisements and the like, they have a problem that they cannot be recycled and are not suitable for future resource saving.
[0004]
Next, plywood is often used as a bulletin board for election posters, but since it is made of wood, it has a higher density than boards made of polystyrene or polyethylene foam, so it is only heavy and difficult to carry. In addition, it was inconvenient to handle, such as the fibrous portion of the wood sticking to the skin during work.
[0005]
Recently, it has been proposed to use a nonwoven fabric for a bulletin board (see Patent Document 1). However, this bulletin board has two layers of a fiber condensate in order to make it easy to insert and remove push pins and thumbtack. In order to make the traces of the push pins inconspicuous, a nonwoven fabric is further laminated thereon. Such a bulletin board has a problem in terms of economy and workability during manufacturing.
Patent Document 2 proposes a board base made of a single layer of nonwoven fabric. However, it is impossible to print directly on the board base due to bleeding or the like, and a board having a high design property is required. Could not.
[0006]
[Patent Document 1]
JP-A-7-248736 [Patent Document 2]
JP 2002-309472 A
[Problems to be solved by the invention]
The present invention makes it possible to stably attach a poster or the like with a push pin, a thumbtack or glue, even if it is made of a single layer of nonwoven fabric, and it is possible to print directly and have a good sound absorbing performance. The task is to provide
[0008]
[Means for Solving the Problems]
In the present invention, the above problem has been solved by laminating a film on at least one surface layer of a nonwoven fabric containing heat-fused fibers.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The nonwoven fabric used in the present invention is preferably made entirely of polyester fibers from the viewpoint of physical and chemical stability and waste disposal (recyclability). Solid fibers may be used, but it is preferable to include hollow fibers at least in part from the viewpoint of the rigidity of the board base material.
[0010]
Further, as the heat-fused fiber, any material may be used as long as it partially melts or partially melts the surface of the non-woven fabric by heat treatment to firmly fuse other fibers and stabilize the structure of the nonwoven fabric. A material made of a material that melts (softens) at a temperature of ten to one hundred and several tens degrees Celsius is used. It is preferable to use a conjugate fiber containing such a material as a part of the fiber, particularly, a core-sheath type hot-melt fiber having polyethylene terephthalate copolymer as a fusion component on the surface.
[0011]
The board base material of the present invention is made of, for example, ordinary polyester short fibers and polyester short fibers having heat-fusibility, which are laminated as a web through a card machine, subjected to a heat treatment after cross-layering, and subjected to a nonwoven fabric (flat In the step of preparing the non-woven fabric, at the exit of the heat treatment zone, the film is supplied from one side or both sides to be laminated and simultaneously pressed and smoothed with a roller, or after the flat non-woven fabric is prepared, the film is laminated and pressed. It can be manufactured by a method or the like. That is, since the heat-fused fibers are mixed with the nonwoven fabric, the adhesiveness between the surface layer portion of the nonwoven fabric and the film can be enhanced, and the film can be smoothly laminated and adhered.
[0012]
Such a nonwoven fabric is obtained by opening and mixing short fibers, performing a carding machine and a cross-layer treatment, and subsequently performing a heat treatment at 140 to 200 ° C. from both sides of the sample. Is compressed with a roller to produce a "single layer of nonwoven fabric" having a surface layer and an intermediate layer.
[0013]
For example, the total basis weight 700 g / ^{m 2,} the total nonwoven side of thick 7mm is smooth shaped short-fiber nonwoven fabric is smooth like the surface layer portion basis weight 150 g / ^{m 2,} a thickness of 1 mm, a density 0.15 g / cm ³ On the other hand, the inner layer portion had a basis weight of 550 g / m ² , a thickness of 6 mm, and a density of 0.09 g / cm ³ (for such physical properties, the nonwoven fabric was smoothed by a roller treatment, and the hardened portion was 1 mm as a surface layer portion). And the remaining 6 mm thick layer was measured as the inner layer portion).
[0014]
As a method of bonding the film and the nonwoven fabric layer, a method of directly hot-pressing or a method of laminating a web made of a hot-melt resin or a heat-fused fiber may be used for heating. By directly printing on this film, it is possible to easily produce a highly designable object such as a POP board, a poster, etc., and also to make it stand alone or to stick it on a bulletin board with a push pin, a thumbtack or glue. . Further, when installed in a room or used as a partition, it has good sound absorption performance not found in conventional plywood or a board made of polystyrene foam, and is expected to be quiet in the room.
[0015]
In the board base material of the present invention, the thickness of the surface layer is 0.5 to 5 mm, and the density of the surface layer is about 1.2 to 10 times, particularly about 1.3 to 3 times the density of the inner layer. preferable.
Since the density of the surface layer is increased, the density of the nonwoven fabric layer is very light, such as 0.01 to 0.3 g / cm ³ , particularly 0.05 to 0.2 g / cm ^3. Can also be used stably and are very easy to use. It is practical that the total weight is about 100 to 2000 g / m ² and the total thickness is about ² to 30 mm. The ratio of the thickness of the high-density surface layer portion to the low-density inner layer portion is preferably about 1: 1 to 30.
[0016]
The film (or sheet) used in the present invention may be a commonly used general-purpose resin, but is preferably made of a polyester resin and has a thickness of 0.01 to 0.5 mm. By making the nonwoven fabric layer and the film made of polyester resin, recycling becomes easy. When the thickness of the film is 0.01 to 0.5 mm, rigidity and handleability (weight) are excellent. More preferably, a thickness of 0.02 to 0.2 mm has more suitable rigidity and ease of handling.
[0017]
Such a board substrate can be used as it is for a bulletin board or an advertisement pop board as it is formed by laminating a film on a single nonwoven fabric, but it is fixed to a wooden or metal frame, May be used by being laminated on another support having a plate shape.
[0018]
【Example】
An embodiment of the present invention will be described below. In the Examples, “%” means “% by weight” unless otherwise specified.
[0019]
(Method of measuring and evaluating sound absorption coefficient)
Based on JIS A 1405, the measurement was performed at the normal incidence sound absorption coefficient. For the sound absorption performance, a cylindrical sample having a diameter of 30 mm was prepared, and a multi-channel analysis system 3550 manufactured by Bruel & Kjar (BZ5087 two-channel analysis software) was used. Was measured, and the sound absorption at 1 kHz was compared and evaluated.
[0020]
Example 1
50% of polyethylene terephthalate (PET) hollow type short fiber H588 (6.6 dtex × 51 mm) manufactured by Kanebo Synthetic Fibers Co., Ltd., and copolymerized PET short fiber 4080 (2.2 dtex × 51 mm) manufactured by Unitika Fiber Co., Ltd. as a heat fusion fiber. ) 50% was spread, mixed and subjected to a carding machine and a cross-layer treatment. Subsequently, the sample was subjected to heat treatment at 140 to 200 ° C. from both sides, and the nonwoven fabric was further compressed by a roller at the exit of the heat treatment zone to obtain a nonwoven fabric having a total basis weight of 350 g / m ² and a total thickness of 7 mm. 10 g / m ² of a powdery polyester binder resin was applied to one surface of the nonwoven fabric, and a 0.05 mm thick polyester film was further laminated thereon and pressed at a heat treatment temperature of 90 ° C.
[0021]
This was cut into 1000 mm x 1000 mm and then used as a base material for a POP board. This was directly printed by an ink jet method. No bleeding was seen on the surface. This POP board had high design properties and sound absorption performance was better than polystyrene foam boards and plywood. The sound absorbing performance when the film surface was directed in the direction of the sound source was better than that of the board made of only the nonwoven fabric without the film laminated.
[0022]
Example 2
A method similar to that of Example 1 was performed, except that polyethylene terephthalate (PET) short fiber 310 (2.2 dtex × 51 mm) manufactured by Kanebo Gosen Co., Ltd. was used instead of the short fiber H588 of Example 1.
[0023]
Any of the board base materials obtained in Examples 1 and 2 was stably stuck with a push pin, a thumbtack, or glue on a poster or the like. In particular, the board base material of Example 1 using hollow fibers as the non-heat-fusible fibers has rigidity, and can be used as it is by printing characters and pictures directly on the film surface in the form of a single-layer nonwoven fabric and using it as it is. It was useful as a poster, bulletin board, etc. Furthermore, when used indoors, it also exhibited a sound absorbing effect and was very useful.
[0024]
Example 3
70% of polyethylene terephthalate (PET) short fiber 310 (2.2 dtex × 51 mm) manufactured by Kanebo Synthetic Co., Ltd., and copolymerized PET short fiber 4080 (2.2 dtex × 51 mm) 30 manufactured by Unitika Fiber Co., Ltd. as a heat fusion fiber. %, A nonwoven fabric having a total basis weight of 700 g / m ² and a thickness of 20 mm was obtained in the same manner as in Example 1. 10 g / m ² of a powdery polyester binder resin was applied to one surface of the nonwoven fabric, and a polyester film having a thickness of 0.07 mm was further laminated thereon and pressed at a heat treatment temperature of 90 ° C.
[0025]
This was cut into 900 mm x 1800 mm, and this was directly subjected to pearl color printing and used as a bulletin board. In this bulletin board, it was possible to stably attach a poster or the like with a push pin, a thumbtack, glue, or the like.
[0026]
【The invention's effect】
Since the board substrate of the present invention can use a single layer of nonwoven fabric as a substrate, it is very easy to handle in both production and use. Further, since the nonwoven fabric is mainly composed of polyester fibers, it can be recycled, and is suitable for future resource saving. Furthermore, in the case of the conventional plywood, it is heavy and difficult to carry, and the work is inconvenient, such as the fibrous portion of wood sticking to the skin during work, but the board base material of the present invention is extremely lightweight, Since the surface is smooth, it is easy to handle and excellent in appearance, and it is easy to attach a poster or the like with a push pin, a thumbtack or glue.
[0027]
In addition, the board substrate of the present invention can easily produce a highly designable material such as a POP board or a poster by directly printing on a film obtained by laminating and pressing a film on a flat nonwoven fabric, In addition, it is possible to directly stand alone or paste it on a bulletin board with glue.
[Brief description of the drawings]
FIG. 1 shows an example of a POP board of a direct self-standing type of the present invention. FIG. 2 shows an example of a bulletin board of the present invention pasted with a push pin, a thumbtack or glue.
(1) The present invention (2) Polyester film (3) Non-woven fabric containing heat-sealing fiber (4) Support (5) Push pin (6) Conventional bulletin board

Claims (6)

A board substrate made of non-woven fabric, comprising a non-woven fabric containing heat-fusible fibers, wherein a film is laminated on at least one surface layer of the non-woven fabric. The nonwoven board substrate according to claim 1, wherein the nonwoven fabric is made of polyester fibers, and the non-heat-fusible fibers include hollow fibers. The nonwoven board substrate according to claim 1 or 2, wherein the thickness of the surface layer portion of the nonwoven fabric is 0.5 to 5 mm, and the density of the surface layer portion is 1.2 to 10 times the density of the inner layer portion. The nonwoven board substrate according to any one of claims 1 to 3, which is used for a bulletin board or an advertising pop board. The nonwoven board substrate according to any one of claims 1 to 4, wherein the film is made of a polyester resin and has a thickness of 0.01 to 0.5 mm. Total basis weight of 100 to 2000 g / ^{m 2,} the total thickness of 2 to 30 mm, claims 1-5 nonwoven according to any one of the density of the nonwoven fabric layer is 0.01 to 0.3 g / cm ³ Board base material.

Images