JPH0342673A - Composite structure body for copy - Google Patents

Abstract

PURPOSE:To stably and readily copy a sharp image on photographic cloth by forming a first layer with a specific extra fine fabric cloth layer and employing an adhesive layer as a second layer and forming a third layer with film and/or paper. CONSTITUTION:The first layer is made of an extra fine fabric cloth of 1 to 0.00001 denier, the second layer of the adhesive layer, and the third layer of film and/or paper. The cross-section of the 1 to 0.00001 denier extra fine fabric is not limited to a cycle, and an elliptic shape of a greater compression and a rectangular cross-section are preferable. When their surface layers are compared with that of the circular cross-section in terms of fineness of the same thread, they are greater to improve fineness and smoothness. the fine and smooth surface made of the extra fine fabric is used as a layer to be copied, and is integrated with paper and/or film through the adhesive layer to fix the shape. Thus, a sharp image is stably and readily copied on photographic cloth.

Description

[Detailed description of the invention] [Industrial application fields] The present invention relates to a composite structure for copying.

More specifically, the present invention relates to a composite structure for copying (hereinafter simply referred to as a composite structure)' that realizes stable and easy copying of clear images onto fiber cloth.

[Prior Art] It has already been proposed to copy letters, pictures, photographs, etc. onto fabrics such as woven or knitted fabrics.

For example, Japanese Patent Publication No. 5'159547 discloses a method of directly transferring and printing a toner image onto a fabric by interposing a sheet with a smooth surface between the non-printing surface of the fabric and a transfer electrode;
In Japanese Patent Publication No. 58-36771, after transferring to paper using a sublimation dye, the transferred surface is placed on a fabric and heated to a temperature higher than the sublimation temperature of the dye to re-transfer the sublimation dye to the fabric. A method, JP-A No. 52-23939, describes a method of applying static electricity to a carrier sheet and fabrics to bring the carrier sheet and fabrics into close contact with each other to transfer a print; JP-A-51-103433 discloses Improved toners for electrostatic images that can be dyed well on fabrics, as well as Utility Model Application Publications No. 128354/1986 and No. 8/Utility Model Application No. 61-8
No. 5465 proposes a device that considers the supply state of cloth to be copied.

However, all of these proposals concern improvements in transfer methods, colorants, or post-processing of fabrics, and the fabric structure itself, which is the object of copying, has to be replaced with the commonly used paper. Similar to copying onto film or film, this was not an attempt to improve the quality of the image and the stability of the copying process. Therefore, with such conventional techniques, very complicated processes are required, and there is a limit to the transfer efficiency of toner onto fabrics, which is the most problematic issue when copying onto fabrics. There were problems such as the image being unclear or insufficient image density being obtained. There is a clear difference in the images obtained from paper and film, which are currently widely used as copying materials, and there are also problems with the runnability of the fabric when actually copying. However, the current situation is that it has not yet been put into practical use.

[Problems to be Solved by the Invention] In view of the problems of the prior art as described above, it is an object of the present invention to provide a fabric with the same copying performance and copying performance as paper and film conventionally used as copying materials. It is an object of the present invention to provide a composite structure (in other words, a printing cloth) from which a copy cloth can be easily and stably obtained by imparting processability.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present inventors have made extensive studies and found that a dense and smooth surface made of ultra-fine fibers is used as a copying layer, and For fixation, paper and/or
Alternatively, a clear image can be stably and easily copied onto a fabric by integrating the film and an adhesive layer, or by coating and/or impregnating it with a glue to form a composite structure. We have discovered that this can be done, and have arrived at the present invention.

That is, in the composite structure of the present invention, the first layer consists of an ultrafine fiber fabric of 1 denier to 0.00001 denier, the second layer consists of an adhesive layer, and the third layer consists of a film and/or paper. It is characterized by:

Moreover, the composite structure of the present invention has a denier of 1 to 0°0000.
A 1 denier ultrafine fiber fabric is impregnated with a water-soluble glue and/or
or is characterized by being coated.

Alternatively, the composite structures of the present invention can be made from 1 denyl to 0.0 denyl
0001 denier ultrafine fiber cloth and low melting point heat-adhesive fibers are interwoven and/or mixed.

[Function] Hereinafter, the composite structure of the present invention will be explained in more detail.

In the composite structure of the present invention, the ultrafine fiber fabric layer corresponds to the copying area. Therefore, the structure of the fabric forming the layer has a great influence on copying performance.

Regarding the ultrafine fibers forming the layer, the method for producing ultrafine fibers with a denier or less is not particularly limited, and various conventionally known techniques for producing ultrafine fibers can be used as they are. . That is, for example, it may be made by a method using polymer mutual array fibers, which are generally called sea-island composite fibers, or the island component may be further made into polymer mutual array fibers, which are called sea-island composite fibers. You can make it from what you already have. In this case, the sea component may be separated using a solvent or a decomposing agent, or may be separated into peelable split fibers consisting of two components A and B. Also,
In the direct spinning method, the spinning conditions may be set to those for spinning ultrafine fibers, or,
A method of forming fibers of 1 denier or less by using peelable split fibers made of two AlB components may be used.

Several methods are known for producing such ultrafine fibers of 1 to 0.00001 denier, such as "
It is as explained in Kagaku to Kogyo, Vol. 36, pp. 521-523 (published by the Chemical Society of Japan, 1983), and any suitable method can be used in the present invention.

In addition, the cross-sectional shape of the ultrafine fibers of 1 to 0.00001 denier as used in the present invention is not limited to a circular shape, and may be any shape among triangular, square, elliptical, or polygonal shapes. do not have. On the contrary, when comparing fibers with an elliptical shape with a large aspect ratio or with a rectangular cross-sectional shape, the surface layer becomes larger when compared with the same single yarn fineness, and the fabric layer made of such fibers has a higher density and smoothness. This can be said to be a more preferable shape.

In addition, the ultrafine fabric layer in the present invention may be any layer made of ultrafine fibers obtained by the method described above, and the fiber layer may be made of either woven or knitted fabric or nonwoven fabric. You can.

The woven or knitted fabric may be formed by any conventional method. If the structure is a woven fabric, it may be a plain weave, a twill weave, a satin weave, a double weave or a variation of these, or a napped or raised product of these, or a knitted fabric. In that case, all the editions such as horizontal edition and vertical edition (
(in a broad sense), and may also include piloerection products, non-piloerection products, etc. In addition, as for the nonwoven fabric, those obtained by a general spunbond method, flash spinning method, melt blowing method, etc., as well as raised or non-raised products thereof, may be used.

When the fabric layer of the composite structure of the present invention is composed of a woven or knitted fabric, the number and density of the warp yarns and weft yarns are important factors in obtaining the initial effects of the present invention.

In other words, the product of the numbers of warp and weft yarns is 5.00.
It is preferable that it is 0.000 pieces/cITi' or more,
In addition, it is preferable that the product of the weave and knitting density of warp and weft yarns is 1,000 threads/cnf or more, and if this value is not satisfied, the transfer efficiency of the colorant to the woven or knitted fabric will be poor. There is a tendency that a practical image density cannot be obtained, or the boundaries of the design become unclear, making it difficult to obtain a clear image.

Similarly, a nonwoven fabric preferably has a very dense and as flat surface structure as possible.

Specifically, although not necessarily limited, according to the findings of the present inventors, the apparent density is 0.15 g/cr.
+1 or more is preferable, for example, a spunbond nonwoven fabric or a short fiber nonwoven fabric calendered,
Those subjected to water jet punching can be suitably used. In addition, it can be said that extremely embossed surfaces with severe surface irregularities are generally not suitable for the present invention, but products that take advantage of such surface irregularities are particularly welcomed. In the field,
Of course, there is no problem in using a nonwoven fabric with a highly uneven surface.

Note that the apparent density is a value expressed by the following formula.

These reasons will be explained in more detail using textiles as an example.

In the composite structure of the present invention, by using ultrafine fibers in the fabric layer corresponding to the copying area, it is possible to exhibit a dense and unique flat structure, and it can be This results in a very flat state.

That is, ultrafine fibers having a denier of 1 to o, ooooi, more preferably 0. By manufacturing the fabric mainly using fibers of 2 to 0.00001 denier, the fiber spacing becomes very dense, resulting in a cross-sectional structure with no visible gaps. Furthermore, by applying appropriate external pressure treatment (for example, press treatment) to the surface of the fiber cloth, the arrangement of each ultrafine single fiber becomes even more flattened and dense, and the surface structure of the fiber cloth becomes a flat, finely packed structure, resulting in coloring. This creates a surface condition where the agent can be effectively transferred.

Therefore, by using this fabric layer in the copying area, the effective area to which the colorant is transferred is very large, and it is possible to obtain a practical image density close to that of paper (copy paper) and a pattern with clear boundaries. It can be done.

Here, copying (or copying) as used in the present invention refers to printing or transferring an image (original image) onto an object to be copied, such as a colored sheet made of substantially solid powder. In addition to transferring the original image to another object, it also includes electronic copying such as printing data images and character data from a computer onto the object to be copied; This includes all types of electronic printing methods such as electrophotographic methods, thermal transfer methods, and sublimation transfer methods.

In addition, as mentioned above, in order to increase the density of woven or knitted fabrics or non-woven fabrics, for example, after fabrication using yarn with high heat shrinkage,
It is also an effective means to make the structure more dense by applying needle punching or water jet punching.

Of course, the ultrafine fabric layer may be densified by treatment with chemicals such as benzyl alcohol, carbolic acid, and methylene chloride.

Furthermore, it is also preferable to perform a pressure pressing treatment on or from the fiber fabric after the fabric is made, because as mentioned above, the surface can be made into a more furazo I-like state. The pressure pressing process may be, for example, a process using an iron or a process using a calender roll device. In addition, in order to perform the press process effectively,
It is also more preferable to carry out the heat treatment at a temperature below the melting point of the material used for the fiber cloth. For example, if the material is polyester fiber, it is preferable to process it at a humidity of 200°C or less.

Further, it is a preferable method to perform the press treatment at the same time as laminating and integrating the fiber cloth with a film or paper, which will be described later, because the process can be simplified. However, you must be careful at this time, as the film or paper must be peeled off from the fiber cloth after copying.
It is important to carry out the adhesive treatment under conditions that are 1 degree weaker than the normal conditions (temperature, pressure) of the adhesive used to bond the film or paper and the fiber cloth.

Now, when using fiber cloth as a copying material, in addition to the clarity and density of the image obtained, there is also the issue of how to suppress the occurrence of wrinkles and deformation and how to supply it to a copying machine in a stable state. is important. Regarding this point, as in the present invention, the fiber cloth and the film and/or paper may be laminated and integrated, supplied to a copying machine, etc., and separated at an appropriate time after copying.

That is, one of the corresponding requirements for the composite structure of the present invention is that the film and/or paper forming the third layer and the first layer
By compositely integrating the layer with an ultrafine fiber fabric layer that has excellent copying performance via an adhesive, it is intended to achieve stability during copying processing.

The thickness of the laminated film or paper is 6 μm.
~400 μm, and 1/40 to 3 of the thickness of the fiber cloth
It is best to use one that is about twice as thick. The film is not particularly limited, but it is desirable to use a relatively hard film such as a polyester film or a polypropylene film Z. −
When it comes to boat fishing, you can use almost any paper or film that can be run through an electronic copying machine, and you can also use paper or film that cannot be run through a copying machine due to strength issues. However, it is also possible to use materials that have strength and flexibility that can be applied to electronic copying machines when integrated with fiber cloth.

In order to integrate the first layer and the third layer, an adhesive layer is provided on the second layer.

Various methods can be considered to form an adhesive layer and integrate the layers.

For example, using a film whose surface is laminated with a heat-adhesive resin, heat-pressing may be performed at a temperature 30 to 50° C. lower than the normal complete adhesion processing temperature of the adhesive resin.

If the adhesive treatment is performed at a temperature near or higher than the normal complete adhesive treatment temperature, it will be difficult to separate the fiber cloth from the film or paper after copying, which is not preferable.

The adhesive (adhesive resin) used to laminate the film is, for example, a blend of copolymerized polyester and polyethylene in an appropriate ratio when a biaxially stretched polyester film is used.

Regarding the heat-press bonding treatment conditions, the temperature varies depending on the composition of the adhesive resin, but as described above, it is important that the temperature is lower than the complete bonding treatment temperature of each resin. For example, when using a laminated film of adhesive made of the above resin composition, the complete adhesion processing temperature is generally 16
Since it is 0-1-8000, it is 30-50℃ higher than this.
A suitable treatment temperature range is a low temperature, ie, about 11.0 to 130°C. The processing pressure is also related to flattening the surface of the fiber cloth, and is approximately 60 kg/cm.
Preferably, the pressure is below nf. If the treatment is carried out under too high a pressure, there are concerns that the fiber cloth may become misaligned, the surface may become shiny, and the texture may become rough and stiff, which is not preferable.

Apart from such a method, the following method may also be used.

5 One of them may be to apply an adhesive on the paper and/or film and integrate it with the textile fabric by pressure bonding.

In this method, a water-soluble glue made of acrylic or PVA type can typically be used as the adhesive. After obtaining the composite structure of the present invention in this way, the fiber cloth may be separated from the film and/or paper by a copying process and an adhesive elution process. It may be combined.

1. Another requirement for engraving is that when fabricating fiber cloth using ultrafine fibers, low melting point adhesive fibers are mixed in, and after fabrication, at a temperature lower than that of the low melting point adhesive fibers. This method involves pressure bonding with paper and/or film. Low melting point adhesive fibers are generally copolymerized with nylon 6.66.610.12 in an appropriate ratio, or copolymerized with polybutylene terephthalate and isophthalic acid.

The blending ratio of the low melting point fibers is more preferably 50% by weight or less, preferably 30% by weight or less based on the total weight of the fiber cloth. If it exceeds 50% by weight, the texture of the fiber cloth will become rough and hard, it will not be possible to obtain a fiber cloth with a flat surface, and the adhesive force will be excessive, making it difficult to peel off the fiber cloth after copying. .

Further, it is preferable to select an adhesive and an adhesion method having the following effects depending on the purpose of use of the copying cloth (for example, patch, bib, etc.).

That is, when the structure of the present invention of fabric and paper and/or film is copied through an adhesive layer, when the fabric and paper and/or film are peeled off, the adhesive is removed from the fabric side. Most of it remains. This allows the copied fabric to be easily integrated with other objects through simple processing (for example ironing).

Adhesives and adhesion methods having such effects can be easily achieved by selecting the above-mentioned blending ratio of the adhesive and processing conditions.

Furthermore, as a method for stabilizing the copying process, in addition to the method of laminating these films and papers through an adhesive layer, we have also added the above-mentioned adhesive to the ultra-fine fiber fabric layer to cover the entire fabric. This is a method of creating a composite structure that stabilizes the copyability of the fabric by impregnating it with the fabric or applying it to the side of the fabric opposite to the copy area, and then drying it.

In such a case, when copying is performed using the structure, the adhesive may be used as is without being removed, but it is more preferable to remove the adhesive. For example, when a water-soluble sizing agent is used, the water-soluble sizing agent can be removed by soaking in warm water after treatment, which is particularly preferred.

Furthermore, as another requirement, the above-mentioned low melting point thermally adhesive yarn is mixed in an appropriate proportion in the ultra-fine fiber fabric, and a composite structure that can be processed to the extent that the fabric can be stably copied by heat press processing is created. There is also a way to use it as a body.

In such a case, it is preferable to have a structure in which the front surface is mainly composed of an ultrafine fiber layer, and the back surface has a large amount of the low melting point thermal adhesive threads.

In the present invention, by making the fineness of the constituent fibers sufficiently small and using a high-density and dense fiber cloth in the copying part of the composite structure, it is possible to achieve high It has a great effect in directly obtaining clear images of the density and the edge of the mold, and also improves the stability of copying processing of textile fabrics (
The use of composite structures (printed fabrics) can be expanded depending on the selection of adhesive type and adhesive method, and has a great impact on lifestyle and clothing culture. It goes without saying that you can get it.

The fabric layer forming the main part of the composite structure of the present invention can be further treated with water and oil repellent treatment using silicone or fluorine, dye finishing treatment, coating or laminating treatment, impregnation treatment, sewing, etc. before or after copying. Of course, processing, water absorption that takes advantage of ultrafine fibers, hydrophilic processing, etc. may be performed alone or in combination. In particular, hydrophilic processing such as plasma treatment to further increase clarity, application of a resin with a low refractive index and surface roughening treatment to obtain high color development are preferably applied.

[Example 1 9] The present invention will be explained in detail below using Examples, but the present invention is not particularly restricted or limited by these Examples. Rather, it brings about the next application and development.

Example 1, Comparative Example 1.2 Polymer mutually arranged fibers consisting of polystyrene as the sea component and polyethylene terephthalate as the island component, with an island/sea ratio of 90/10, total denier of 50 deniers, 9 filaments, and island component. A filament yarn consisting of 70 filaments was used as warp yarn and weft yarn to obtain taffeta with a warp density of 57 yarns/cm and a weft density of 43 yarns/cm, respectively.

This material was dry heat set at 180° C., the sea component was removed with trichlorethylene, and then dried to obtain an ultrafine fiber fabric with a single yarn fineness of 0.07 denier. At this time, the density is vertical,
The width was 61 lines/cm and 45 lines/cm, respectively. Therefore, the product of vertical and horizontal density is 2.745 lines/crl
and the product of the number of constituent threads is 1.089,490,500
It was a book/ct.

On the other hand, on one side of a biaxially stretched polyester film (thickness: 0 to 70 μm), a blend of 80% by weight of a low melting point copolymer polyester (melting point: 112°C) and 20 parts by weight of polystyrene was heated to 240°C as an adhesive. The film was melt-extruded to a thickness of 20 μm and laminated to prepare a heat-adhesive film.

Next, the adhesive-laminated surface of the above fabric was subjected to heat press treatment (press pressure 3 kg/c&) using a calendar roll at 115° C., and the fabric and film were laminated and integrated through the adhesive layer.

(For reference, a temperature of 160°C or higher was required to completely bond the fabric and film.) Furthermore, for Comparative Example 1, the warp yarn was 50 denier and 160 denier.
8 filaments (single yarn fineness 2.8 denyl), weft 7
5 denier 36 filament (single yarn fineness 2.1 denier), finishing density 43 vertical filaments/cm % horizontal 32 filaments/
A filament fabric (tack) consisting of cm of polyethylene terephthalate was prepared.

The product of the warp and weft densities of the fabric is 1.376 threads/crl, and the product of the number of constituent threads is 891,648 threads//cIIf
Met.

Furthermore, for Comparative Example 2, a microfiber woven fabric similar to that used in the above-mentioned Example was also prepared before being integrated with the film.

For the three objects thus obtained, the textile side of the laminate of textile and film was used as the copying surface, and a color poster photograph was used as the original image, and a color copying machine (Model Ec-10 manufactured by Fuji Xerox) was used. All copies were made under the same conditions. Note that the film and fabric of the laminate were separated by simple hand kneading after copying.

Table 1 shows the copying processability and copying performance of these three objects.

Table 1 Table 3 As is clear from Table 1, when the composite structure of the present invention (Example 1) is processed in a copying machine, wrinkles, jams, etc. do not occur when processed in a copying machine, similar to the processing of ordinary paper and films. In contrast, Comparative Example 1 had no problems with copying processability, but it was possible to obtain stable processability with no problem, and to obtain images with deep color and clear edges of the mold that were equivalent to those of the original image. The image density is very low,
It was unclear. In addition, in Comparative Example 2, it was in a state of tattered and crumbly, and could not be processed at all.

Example 2 Using the ultrafine fiber fabric obtained in Example 1, a 16% aqueous solution of water-soluble polyvinyl alcohol glue was uniformly applied to the back side of the fabric using a gravure coater, and dried at 80°C.

Next, a color poster photograph was copied onto the opposite side of the fabric from the adhesive-applied side under the same conditions as in Example 1, and then heated at 80°C.
The sizing agent was removed from the fabric while it was left standing in hot water, and the fabric was dried.

In this series of operations, no particular problems were observed in terms of copying processability, copying performance, etc., and the images obtained were clear.

Example 3 A polyester filament yarn with a warp yarn of 50 denier and 24 filaments, and a sea-island synthetic fiber with a front weft yarn of 245 denier and 40 filaments (sea component: polystyrene,
Island component: polyethylene terephthalate, island/sea ratio = 7
8/22, number of island components: 36 (single fiber fineness = 0.13
denier), using a filament yarn of 50
One denier, 24 filament polyester filament yarn and one 50 denier, 10 filament low melting point copolymerized nylon filament yarn (melting point 130°C) are arranged alternately, and the finished density is 54 warp yarns/cm and 64 weft yarns.
The front texture consists of 5 pieces of book/cm and the back texture is 2/3 satin.
A double horizontal twill fabric was obtained.

The copolymerized nylon filament yarn served as a low melting point adhesive fiber, and the fiber was mixed at a blending ratio of 6.9% by weight based on the total weight of the fabric.

The weaving density area of warp and weft yarns of the fabric is 1,296 yarns/c.
d, and the product of the number of constituent threads is 60,424°704/
It was cnr.

Next, the back surface of the woven fabric and the film were bonded under heat and pressure while strongly pressing the woven fabric by hand using a calendar roll heated to 100°C.

Furthermore, a color poster photograph was copied onto the fabric surface under the same conditions as in Example 1, and then the fabric and film were peeled off by hand.

In this series of operations, both copying processability and copying performance were good.

[Effects of the Invention] According to the present invention as described above, it is possible to obtain a novel composite structure for electronic copying that exhibits the excellent functions and effects listed below.

(1) Like paper and films, it is a composite structure for copying that can be directly copied and has a fiber fabric layer on its surface that has very good copyability.

(2) Since the manufacturing method is easy and the structure can be directly copied, the cost reduction effect is significant.

(3) Like paper and film, the composite structure for copying does not cause wrinkles and does not cause jams during one processing.

(4) It is a composite structure for copying that can obtain images with clear image density, boundaries of designs, characters, etc., and firm edges.

(5) A wide variety of uses can be developed by changing the type of adhesive and bonding conditions that form the second layer of the composite structure.

By using the composite structure of the present invention, various pictures, letters, photographs, etc. can be copied onto the fiber cloth surface of the structure, and the resulting fiber cloth (copy cloth) can be copied.
For example, personal items such as patches, handkerchiefs, maps, flags, posters, flyers, magazines, dictionaries, and handicraft cloth, sportswear such as T-shirts and polo shirts, formal wear such as blouses, cut shirts, suits, and dresses, Furthermore, it can be effectively used as fabrics for rain gear such as raincoats, anoraks, and jackets, as indoor and outdoor decorative materials such as other fabrics such as raincoats, wall coverings, etc., and as record shrines.

Claims (4)

[Claims] (1) A copy characterized in that the first layer mainly consists of an ultrafine fiber fabric layer of 1 denier to 0.00001 denier, the second layer consists of an adhesive layer, and the third layer consists of a film and/or paper. Composite structure for. (2) A composite structure for copying, characterized in that an adhesive is impregnated and/or coated on an ultrafine fiber fabric layer mainly having a size of 1 denier to 0.00001 denier. (3) A composite structure for copying, characterized in that a low melting point thermoadhesive fiber is interlaced and/or mixed with an ultrafine fiber fabric of 1 denier to 0.00001 denier. (4) The composite for copying according to claim (3), wherein the front surface is mainly composed of ultrafine fibers of 1 denier to 0.00001 denier, and the back surface is mainly composed of low melting point adhesive fibers. Structure.