JPH10236089A - Image transfer sheet and image transfer method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transfer a recording image to a cloth by a less operation process at a low temperature under a low pressure in a short time by a method wherein a transparent adhesive layer is a mixture of polyamide resin of a specific temperature softening point and under a specific value melt viscosity which is excellent in water resistance, heat fusibility, and heat adhesion, and an inorganic pigment. SOLUTION: An image transfer sheet is manufactured wherein a partition sheet 3 is at first manufactured by forming a release layer 2 by applying and drying an application liquid for the release layer which is excellent in adhesion to a base material 1 and a parting property from an adhesive layer 4 on the base material 1, the adhesive layer 4 having a mixture of polyamide resin and inorganic pigment as principal components is formed on a surface of the release layer 2, and further coating liquid forming an ink receiving layer 5 is applied by drying further onto that. Then, as the adhesive layer 4, polyamide resin is principal component, and as the polyamide resin, especially that of 90-100 deg.C softening point and under 500mpa's/200 deg.C melt viscosity is preferable. Thereby, a recording image is firmly bonded onto a surface of a cloth.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image transfer sheet for transferring a recorded image to a cloth, and more particularly, to recording an image of any picture, character, or the like by an ink jet recording method, and then printing the obtained recorded image. The present invention relates to an image transfer sheet that can be easily thermally transferred to clothes or the like by an iron or the like.

[0002]

2. Description of the Related Art An ink jet recording system is suitable as an output method for a personal computer which is low in noise and low in cost, easy in full-color recording, and surprisingly popular. It is used by many people for such reasons. In addition, with the advancement of technology, inkjet printers have become highly accurate and inexpensive, and are easily available to ordinary people. Therefore, it is easy to print favorite information on clothes (for example, T-shirts) in ordinary households. There is a need for a transfer material that can be used.

[0003] In response to such a demand, after the ink is made to penetrate from the adhesive layer side of a seal material comprising a transparent layer, a picture holding layer having a pattern, and an adhesive layer, the seal material is heated or sensed. There is known a method of sticking to an object to be decorated using a pressure-type adhesive (for example, JP-A-62-242599). However, as in this case, a sheet of woven cloth or the like is used.
When a transparent material having a thick transparent layer (for example, about 1000 μm) is adhered to the fabric, the original flexibility of the woven fabric is reduced, and the adhesion to the woven fabric is deteriorated unless high-temperature treatment is performed. There is a disadvantage that.

Further, when the adhesive layer contains a large amount of organic filler particles, most of the applied ink penetrates the picture layer as the ink absorbing ability and the holding power of the adhesive layer decrease. On the other hand, there is an advantage that the adhesiveness of the resin for the adhesive layer is reduced, so that the strength of the coating film is remarkably reduced and the adhesion between the adhesive layer and the pattern holding layer is poor.

Japanese Patent Application Laid-Open No. Hei 8-100380 discloses a method in which a release agent layer is provided on a base material, and an image is recorded on the ink receiving layer of a transfer medium having an ink receiving layer laminated thereon.
A transfer printing method is disclosed in which a transfer medium-transfer medium composite is formed by bringing an ink receiving layer on which an image is recorded into close contact with a transfer medium, a base material is peeled off from the composite, and a color forming process is performed. . However, in this case, after the transfer medium and the transfer-receiving medium are pressure-sensitively bonded using a cotton roller or the like, the base material is peeled off, and further heat treatment is performed to thermally cure the ink layer to make it insoluble. Must do it.

For this reason, the number of steps required to obtain the final component is large, the required time is long, and it is necessary to perform the treatment at a high temperature for a long time in order to make the color density of the ink receiving layer sufficient. However, since the color forming process is performed at a high temperature and for a long time, the fabric itself is softened, the flexibility is reduced, and there are disadvantages such as losing the original characteristics of the fabric.

[0007]

SUMMARY OF THE INVENTION Accordingly, a first object of the present invention is to reduce the number of work steps required to obtain a final component and to transfer a recorded image to a cloth at a lower temperature, a lower pressure and a shorter time. An object of the present invention is to provide an image transfer sheet in which a fabric integrated with an image to be transferred is excellent in flexibility and washability with a synthetic detergent. A second object of the present invention is to provide a method for easily transferring an arbitrary image recorded by ink-jet recording to a cloth so as not to impair the flexibility of the cloth and to withstand washing.

[0008]

The above objects of the present invention are attained by sequentially laminating a substantially transparent adhesive layer and an ink receiving layer on a release sheet comprising a sheet support and a release layer. An image transfer sheet comprising: a substantially transparent adhesive layer having excellent water resistance, heat melting property and heat adhesion, a softening point of 90 to 160 ° C., and a melt viscosity of 500 mP.
This is achieved by an image method using an image transfer sheet, which comprises a mixture of a polyamide resin having a's / less than 200 ° C. and an inorganic pigment.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional configuration diagram of the image transfer sheet of the present invention. In the drawing, reference numeral 1 denotes a support, reference numeral 2 denotes a release layer, reference numeral 3 denotes a release sheet, reference numeral 4 denotes a substantially transparent adhesive layer (hereinafter, simply referred to as an adhesive layer), and reference numeral 5 denotes ink receiving. Layer 6 represents an image transfer sheet. FIG. 2 illustrates a step of thermally transferring a recorded image to a fabric using the image transfer sheet 6. In the drawing, reference numeral 7 denotes a recorded image, reference numeral 8 denotes a cloth for transferring the recorded image, and reference numeral 9 denotes a laminate in which the image transfer sheet 6 and the cloth 8 are integrated by heat treatment.

The release sheet 3 of the present invention comprises a sheet support 1
In which a release layer 2 is formed. The support 1 may be any as long as it can maintain the strength as a release sheet. For example, paper such as art paper, coated paper, cast paper, woodfree paper, synthetic paper, or paper, and polyester, polypropylene, polycarbonate And a composite with a plastic film such as triacetate. In the case of the above composite, a laminate in which a plastic film is sandwiched between papers is particularly preferable.

The resin used for the release layer 2 formed on the support 1 is selected in consideration of the adhesiveness with the support 1, the releasability with the adhesive layer 4 and the suitability for coating. Should be
For example, a resin having excellent releasability, such as a thermally crosslinked product of an organic acid such as an acryl / stearic acid copolymer, a thermally crosslinked product of an acrylic polyol resin with an isocyanate, a silicone resin, or a fluorine resin can be used.

The release layer 2 according to the present invention may include, if necessary, inorganic pigments such as silica, calcium carbonate, talc, clay and titanium oxide, and plastics such as polyethylene, benzoguanamine, acrylic, epoxy, polystyrene and polyvinyl chloride. Powders and the like can be added. When the recording image 7 is thermally transferred to the fabric 8, the surface of the release layer is copied onto the surface of the adhesive layer. Therefore, by adding an inorganic pigment to the release layer 2, the glossiness of the surface of the adhesive layer is adjusted. Can be.

The particle size of the inorganic pigment to be added is adjusted according to the thickness of the release layer. In the present invention, the thickness of the release layer 2 is 0.1 to 0.1 as a surface yield on the support 1.
Since 5.0 μm is suitable, the particle size of the inorganic pigment added to the release layer 2 is preferably 0.01 to 5.0 μm. If it is too large, the release layer becomes difficult to peel off. In addition, the adjustment of the glossiness can be controlled by the kind and shape of the pigment to be added, the particle diameter and the amount of the pigment to be added.

That is, when the amount of the pigment added is constant,
Using a pigment with a small particle size has higher smoothness on the surface of the coated product obtained than using a pigment with a large particle size, and when the pigment particle size is constant, matting is performed according to the shape of the pigment. The degree changes. In other words, when a spherical pigment is used, the ratio of optically transmitted light on the surface of the obtained coating product becomes larger than when a convex pigment is used,
The degree of matting is low visually. Also, the matting degree increases as the amount of the pigment added increases.

The adhesive layer 4 in the present invention is indispensable for achieving the object of the present invention, and has water resistance, is easily heat-fused by heating, and has a thermal adhesive property to the fabric 8. Characteristics, such as being able to penetrate and integrate into the fabric 8 and being transparent to the extent that an image can be seen. It is preferable that the adhesive layer 4 having such properties has a polyamide resin as a main component. Particularly, the polyamide resin has a softening point of 90 to 160 ° C. and a melt viscosity of 500 mP.
Those having less than a's / 200 ° C. are preferred.

When the softening point of the polyamide resin is lower than 90 ° C., the recorded image transferred to the fabric 8 is blurred or discolored by the synthetic detergent used at the time of washing because the water resistance is slightly inferior. (Dissolved in detergent)
Laundry suitability will be poor. In addition, when the sheet on which the adhesive layer 4 is formed is wound up and stored, the coating is soft and sticky, so that a blocking phenomenon occurs and the preservability deteriorates, which is not preferable. On the other hand, in order to obtain an integrated product having excellent thermal adhesion to the fabric 8, the heat treatment temperature must be equal to or higher than the softening point of the resin. Yellowing or charring)
Accordingly, the paper quality strength is reduced, and when the support is peeled from the laminate, the paper tends to break, which is not preferable.

The resin has a melt viscosity of 500 mPa's.
If the temperature exceeds / 200 ° C., the thermal melting property of the adhesive layer 4 is poor, and the permeability of the melted adhesive to the ink receiving layer 5 and the fabric 8 is poor, and the thermal adhesiveness to the fabric 8 is poor. Becomes Therefore, in this case, when washing with a synthetic detergent,
This is not preferable because defects such as the transfer image being easily peeled off from the fabric 8 occur. The softening point of the resin in the present invention is J
The values measured based on the standard of IS K6863 are shown.

As in the case of the release layer, the adhesive layer 4
In order to adjust the glossiness of the image surface transferred to the fabric 8,
An inorganic pigment can be added together with the polyamide resin. As the inorganic pigment to be mixed with the polyamide resin, known inorganic pigments such as silica, calcium carbonate, titanium oxide, barium sulfate, clay, and talc can be used. Since the thickness of the adhesive layer 4 is thicker than that of the release layer 2, the particle diameter does not need to be particularly limited unlike the case of the release layer. From the viewpoint of uniformly applying the layer 5 onto the adhesive layer 4,
It is preferable to use a pigment having a particle size of 1.0 to 25 μm.

When the inorganic pigment is added, the mixing ratio between the polyamide resin and the inorganic pigment is preferably not more than 30 parts by weight based on 100 parts by weight of the polyamide resin. When the inorganic pigment exceeds 30 parts by weight based on 100 parts by weight of the polyamide resin, the adhesive layer 4
In addition, the adhesiveness between the ink receiving layer 5 and the ink receiving layer 5 is reduced, and the melting property of the adhesive layer 4 is hindered by the inorganic pigment during the heat treatment, and the penetration of the adhesive into the ink receiving layer 5 and the fabric 8 is reduced. As a result, the thermal adhesion to the fabric 8 is reduced, and it is difficult to obtain an integrated product.

In the adhesive layer 4, if necessary,
By adding an antioxidant, a coloring agent such as a fluorescent dye and a fluorescent pigment, an ultraviolet absorber, an antistatic agent, and the like, it is possible to further enhance the fading prevention of the recorded image 7 and the antioxidant performance of the image transfer layer. The thickness of the adhesive layer 4 is determined such that the polyamide resin in the adhesive layer 4 penetrates into the ink receiving layer 5 by heating, and at the same time, penetrates between the fibers of the cloth 8 having poor surface properties. However, if the thickness is too large, the adhesive is excessive, and the adhesive is likely to protrude to the outside of the recorded image area or to the back surface of the fabric 8, so that the thickness is 10 to 10. It is preferably 150 μm, particularly preferably 20 to 80 μm. In any case, since the image will ultimately be observed through the adhesive layer 4, the adhesive layer 4 must be sufficiently transparent, ie, substantially transparent, that the image is recognizable. is necessary.

Next, the ink receiving layer 5 used in the present invention will be described.
Is a layer for recording arbitrary information input to a personal computer or the like via an ink-jet printer, and is capable of obtaining a high-quality recorded image without ink absorption, ink drying, and image bleeding. Some performance is required. As the coating material for the ink receiving layer that satisfies these properties, a coating material composed of a resin and a white pigment having an oil absorption of 200 ml / 100 g or more is preferable.

Examples of the resin used for the ink receiving layer 5 include water-soluble polymers (eg, polyvinyl alcohol, polyvinyl acetal, polyvinyl pyrrolidone, etc.), acrylated quaternary ammonium salt type conductive resins, urethane resins, and polyamide resins. Resin, polyester resin, acrylic resin, or the like can be used. These resins may be used alone or in combination of two or more.

In the present invention, since the polyamide resin having excellent water resistance in the adhesive layer 4 is dissolved by heat and penetrates into the ink receiving layer 5, the resin used for the ink receiving layer 5 has a slightly poor water resistance. There may be. As the white pigment, an inorganic white pigment such as silica or an organic white pigment having a void structure (for example, a pigment obtained by a condensation / crosslinking reaction of urea and formaldehyde) can be used.

The mixing ratio between the resin and the white pigment is as follows:
It is preferable that the white pigment is 100 to 5 parts by weight based on 0 part by weight. If the amount of the white pigment is more than 100 parts by weight, the adhesiveness between the adhesive layer 4 and the ink receiving layer 5 is reduced, and the coating strength of the ink receiving layer 5 (surface strength, binding between the resin and the white pigment) is reduced. (Adhesive force) is likely to decrease, which is not preferable. Conversely, if the blending amount of the white pigment is less than 5 parts by weight, the ink absorbency and ink drying property are reduced, and image bleeding is likely to occur, which is not preferable because the image quality tends to deteriorate.

The oil absorption of the white pigment is 200 ml / 100 g
When the value is less than the above, similarly, the ink absorbability and the ink drying property by the ink jet recording are lowered, and the image bleeding is likely to occur, and the image quality tends to be inferior. The oil absorption of the above white pigment is determined according to JIS K-519.
It is a value measured based on the 1-19 standard. In addition, if necessary, a fluorine-based additive, a silicone oil, a coloring agent such as a fluorescent dye and a fluorescent pigment, an ultraviolet absorber, an antistatic agent and the like are added to the ink receiving layer 5 to fade the recorded image. It is also possible to further enhance the performance of prevention and image blur prevention.

The thickness of the ink receiving layer 5 is preferably about 5 to 25 μm in consideration of the ink absorbing property, ink drying property and image quality. When the thickness is less than 5 μm, the ink absorbency and the ink drying property are inferior, so that it is not preferable. When the thickness is more than 25 μm, it is not possible to further improve the ink absorptivity and ink drying property, and the ink jet recording suitability such as image quality, and the drying property after application of the coating material is reduced. Absent.

The fabric 8 used in the present invention includes cotton,
Hemp, silk, rayon, wool, polyester, acetate,
A woven fabric made of fibers such as nylon and acrylic can be used. Further, the release layer 2 and the adhesive layer 4 according to the present invention.
As a method of forming a coating film of the ink receiving layer 5, a normal coating method using a roll coater, a bar coater, a hot melt coater, a comma coater, a die coater device, or the like is used. Or a method of drying and solidifying by infrared rays or the like.

The heat treatment conditions for transferring the image recording surface of the image transfer sheet of the present invention, adjusted as described above, to the cloth are as follows. What is necessary is just to obtain the laminated body 9 and to perform a heat treatment for about 10 to 100 seconds at a temperature of about 80 to 170 ° C. which does not cause deterioration of the sheet support. For the heat treatment, an iron or the like used in ordinary households can also be used. By performing a simple heat treatment as described above,
The polyamide resin in the adhesive layer melts, penetrates through the ink receiving layer and penetrates into the fabric, and firmly adheres to the fabric. As a result, the image is firmly fixed to the upper fabric protected by the polyamide-based resin, so that even if the image is washed with a synthetic detergent or the like, the image does not bleed or discolor.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, an image transfer sheet according to the present invention is formed on a support 1 with excellent adhesion to the support 1 and excellent releasability from the adhesive layer 4. A release sheet 3 is manufactured by applying and drying a coating liquid for a mold layer to form a release layer 2, and a mixture of a polyamide-based resin and an inorganic pigment is mainly formed on the surface of the release layer 2. The adhesive layer 4 is formed, and a coating liquid for forming the ink receiving layer 5 is further applied and dried.

When the image transfer method of the present invention is carried out, first, as shown in FIG. 2, an image is recorded on the surface of the ink receiving layer 5 of the image transfer sheet 6 by an ink jet printer (Step 1). . Image recording can be performed by a general commercially available ink jet printer. Next, the surface of the ink receiving layer 5 on which the image is recorded and the fabric 8 are opposed to each other, and a heat treatment is performed from the back surface of the release sheet 3 or from above the fabric 8, and a laminate 9 in which the image transfer sheet 6 and the fabric are integrated. (Step 2). Finally, after the laminate 9 is cooled, the release sheet 3 is peeled off from the laminate 9 (Step 3).

[0031]

The image transfer sheet of the present invention has a heat-fusible and movable adhesive layer between the release sheet and the ink receiving layer. By simply adding, the recorded image can be firmly adhered to the fabric surface. According to the present invention, the number of working steps until an image is transferred to an adherend such as a cloth is greatly reduced as compared with the related art, and the cloth on which an image is transferred is rich in flexibility without losing the original characteristics of the cloth, and is used for washing. There is no bleeding or discoloration of the image due to the synthetic detergent, and it has excellent washability. By using the image transfer sheet of the present invention, even if the water resistance of the ink receiving layer is inferior, since the amide resin in the adhesive layer having excellent water resistance is protected by permeation during the heat treatment, as a result, the water resistance is improved. It becomes an image transfer layer having excellent properties.

[0032]

Next, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples. In the Examples and Comparative Examples, “parts” and “%” represent “parts by weight” and “% by weight”, respectively.
The required performance of the image transfer sheets obtained in Examples and Comparative Examples was evaluated by the test methods described below.

1) Adhesiveness between the adhesive layer and the ink receiving layer A tape was stuck on the surface of the ink receiving layer, and the sample was reciprocated once with a 2 kg roller. The degree of adhesion of the film was sensory evaluated.

2) Coating strength of image transfer sheet Using a surface property measuring device (Haydon 14) manufactured by Shinto Kagaku Co., Ltd., a strength test of the surface of the ink receiving layer was performed with pencils having different hardnesses. The ease of scratching was determined based on the hardness HB.

3) Preservability of Image Transfer Sheet The roll wound after forming the adhesive layer on the release sheet was stored for one month in an environment of 40 ° C. and 65% RH. The presence or absence of blocking between the release sheet back surface and the adhesive layer surface was sensory evaluated.

4) Suitability for Inkjet A test chart image was recorded on the ink receiving layer surface of the image transfer sheet using an MJ-800C machine manufactured by Epson Corporation, and the ink absorbency, ink dryness, image bleeding, and image quality were evaluated. An evaluation was performed. a) Ink Absorbability One minute after image recording, a copy paper was placed on the surface of the ink receiving layer, and the paper was reciprocated once with a 2 kg pressure roller, and the presence or absence of the ink transferred to the copy paper was evaluated. . b) Ink drying property Three minutes after image recording, the image recording surface was touched by hand, and the dried state was subjected to a sensory evaluation. Judgment Good: The surface is dry and there is no tackiness. Bad: The surface has a tackiness.

C) Image bleeding Immediately after recording an image, a green portion which is a mixed color (Dot 50%)
Was observed with a magnifying glass (100 times), and the presence or absence of occurrence of ink seeping around Dot was evaluated. d) Image quality For single color (magenta) and mixed color (green) images,
The sensory evaluation was performed to determine whether there was no unevenness in shading and excellent color reproducibility.

5) Suitability for transfer to fabric, etc. a) Adhesiveness to fabric After image fusing the image transfer sheet 50 times, the degree of adhesion between the ink receiving layer and the fabric was sensory evaluated. b) Extrusion of Image In the integrated laminate before the release sheet was peeled, the presence or absence of the adhesive extruding outside a predetermined area was visually evaluated.

C) Deterioration of sheet support In the integrated laminate, the coloring of the back surface of the release sheet due to thermal deterioration and the presence or absence of paper breakage in the support when peeled from the laminate were visually evaluated. . d) Release Property of Release Sheet The presence or absence of occurrence of paper scuff at the time of releasing and releasing the release sheet from the integrated laminate was visually evaluated. e) Flexibility of the image-transferred adherend The image-transferred adherend was touched by hand, and the flexibility was organoleptically evaluated.

6) Suitability of the image-transferred adherend for washing The image-transferred adherend was washed for 15 minutes by a washing machine using a synthetic detergent and then dried, and then subjected to a washing test.
Repeatedly, a test sample was obtained. a) Adhesion between transfer layer and cloth The degree of adhesion between the image transfer layer and the cloth was visually evaluated. b) State of Recorded Image The presence or absence of occurrence of bleeding or discoloration of the recorded image (the recorded image is dissolved by the detergent) was visually evaluated.

Embodiment 1 81.4 g / basis weight as support
using m ² of NPi quality paper (Ginwa), the coating agent of the following composition was coated and dried on one surface yield was fabricated a release sheet to form a release layer of 3.0 [mu] m. Release agent: 25 parts [Hitachi Chemical Polymer Co., Ltd., trade name: Tesfine 322] Curing agent: 5 parts [Kanto Chemical Co., Ltd., paratoluenesulfonic acid] Matting agent: 5 parts [Mizusawa Chemical Industry Co., Ltd. Mizuka Seal SK7 (trade name: 1.5 μm), manufactured by Co., Ltd.] Toluene; 25 parts Ethyl acetate; 25 parts Methyl ethyl ketone; 15 parts

Next, a mixture of the following composition adjusted so that the mixing ratio of the polyamide resin and the inorganic pigment was 100/30 was used on the release layer, and the inorganic pigment was mixed well by heat treatment. Then, an adhesive layer having a thickness of 50 μm was formed using a hot melt coater. Polyamide resin; 100 parts [Henkel Japan Co., Ltd.
Macromelt 6217 (softening point: 112 ° C,
Melt viscosity: 0.6 mPa's / 200 ° C)] Inorganic pigment: 30 parts [Fuji Silysia Chemical Ltd., trade name Sylysia 770 (particle diameter: 6.0 µm)]

Next, on the adhesive layer, the compounding ratio of the resin having excellent ink absorbency and the organic white pigment was 100/100.
A coating composition having the following composition adjusted to 100 was applied and dried to form an ink receiving layer having a thickness of 10 μm. Polyvinyl alcohol; 10 parts [Denki Kagaku Kogyo Co., Ltd.
Organic white pigment; 10 parts [Nippon Kasei Co., Ltd., organic filler (oil absorption 500 ml / 100 g)] Water: 50 parts Methanol: 30 parts

Next, using a test chart in which characters, pictures, and the like are described, the ink receiving layer prepared as described above is placed on the ink receiving layer.
Image recording was performed using an inkjet printer with a trade name of MJ-800C (manufactured by Seiko Epson Corporation, resolution: 360 dpi) to obtain an image transfer sheet. Then, using a household iron whose surface temperature is adjusted to 170 ° C., the surface of the ink receiving layer of the image transfer sheet and the cotton are overlapped, and a heat treatment is performed for 1 minute with the iron from the back of the cotton to be integrated. The obtained laminated body was obtained. After the laminate was cooled to room temperature, the release sheet was peeled off from the laminate by hand to obtain an adherend to which an image was transferred.

Embodiment 2 FIG. As the resin for the adhesive layer, a polyamide resin having a different softening point and melt viscosity [manufactured by Hitachi Chemical Co., Ltd., trade name: Hibon TCL160 (softening point: 160 ° C, melt viscosity: 500.0 mPa's / 20)
0 ° C.], except that an adherend to which an image was transferred was produced in exactly the same manner as in Example 1.

Embodiment 3 FIG. As the resin for the adhesive layer, a polyamide resin having a different softening point and melt viscosity [manufactured by Henkel Japan K.K., trade name: Macromelt 6801 (softening point: 90 ° C., melt viscosity: 127.9 mPa's / 200)
[° C.], and an adherend to which an image was transferred was prepared in exactly the same manner as in Example 1.

Embodiment 4 FIG. An image-transferred adherend was prepared in exactly the same manner as in Example 1 except that a coating agent having a mixing ratio of a resin and an inorganic pigment of 100/0 was used as the coating agent for the adhesive layer.

Embodiment 5 FIG. As a coating material for the ink receiving layer, instead of an organic white pigment to be mixed with a resin having excellent ink absorbency, an inorganic white pigment silica [trade name: Sylysia 445, manufactured by Fuji Silysia Chemical Ltd. (oil absorption: 210.0)
ml / 100 g)], except that an adherend to which an image was transferred was prepared in exactly the same manner as in Example 1.

Embodiment 6 FIG. Example 1 was repeated except that a polyvinyl acetal resin [trade name: SREC KX1 manufactured by Sekisui Chemical Co., Ltd.] was used as the resin for the ink receiving layer.
An image-transferred adherend was produced in exactly the same manner as in Example 1.

Embodiment 7 FIG. As a resin for the ink receiving layer, a polyvinyl acetal resin [trade name: SREC KX1 manufactured by Sekisui Chemical Co., Ltd.] and an acrylated quaternary ammonium salt type conductive resin [trade name manufactured by Mitsubishi Chemical Corporation] 50/5
An image-transferred adherend was produced in exactly the same manner as in Example 1 except that the resin No. 0 was used.

Embodiment 8 FIG. An image-transferred adherend was produced in exactly the same manner as in Example 1, except that a coating composition in which the mixing ratio of the resin and the organic white pigment was 100/5 was used as the coating composition for the ink receiving layer. .

Embodiment 9 FIG. An image-transferred adherend was produced in exactly the same manner as in Example 8, except that the inorganic white pigment used in Example 5 was used as the pigment for the ink receiving layer.

Comparative Example 1 As a resin for the adhesive layer, a polyamide resin having a low softening point [Henkel Japan Co., Ltd.
An image-transferred adherend was produced in exactly the same manner as in Example 1, except that trade name Macromelt 6813 (softening point: 85 ° C, melt viscosity: 1.0 mPa's / 200 ° C) was used. .

Comparative Example 2 As a resin for the adhesive layer, a polyamide resin having a high softening point [manufactured by Henkel Japan Co., Ltd.
An image-transferred adherend was produced in exactly the same manner as in Example 1, except that trade name Macromelt JP175 (softening point: 175 ° C, melt viscosity: 3.5 mPa's / 200 ° C) was used. .

Comparative Example 3 Polyamide resin having high melt viscosity [Hitachi Chemical Polymer Co., Ltd.]
Manufactured by Hybon TCL150 (softening point: 150 ° C,
(Melt viscosity: 750.0 Pa's / 200 ° C.), except that the image-transferred adherend was prepared in exactly the same manner as in Example 1.

Comparative Example 4 An image-transferred adherend was produced in exactly the same manner as in Example 1, except that a coating agent having a mixing ratio of resin and inorganic pigment of 100/35 was used as the adhesive layer coating agent.

Comparative Example 5 As a white pigment for an ink receiving layer, an inorganic white pigment having a low oil absorption [Nipsil E743 (trade name: 17), manufactured by Nippon Silica Industry Co., Ltd.]
0.0ml / 100g), silica was used in the same manner as in Example 1 to prepare an adherend to which an image was transferred.

Comparative Example 6 As a resin for the ink receiving layer, an ethylene / vinyl acetate copolymer [manufactured by Hoechst Synthesis Co., Ltd.
An image-transferred adherend was produced in exactly the same manner as in Example 1 except that the trade name "Movinyl 130" was used.

Comparative Example 7 As the resin for the ink receiving layer, the polyvinyl alcohol used in Example 1 and the ethylene / vinyl acetate copolymer used in Comparative Example 6 were mixed at a mixing ratio of 50.
An adherend to which an image was transferred was produced in exactly the same manner as in Example 1 except that the resin of / 50 was used.

Comparative Example 8 An image-transferred adherend was produced in exactly the same manner as in Example 1, except that a coating composition in which the mixing ratio of the resin and the organic white pigment was 100/110 was used as the coating composition for the ink receiving layer. .

Comparative Example 9 An image-transferred adherend was produced in exactly the same manner as in Comparative Example 8, except that the inorganic white pigment used in Example 5 was used as the pigment for the ink receiving layer.

Comparative Example 10 As a coating for the ink receiving layer,
An image-transferred adherend was produced in exactly the same manner as in Example 1, except that a coating agent having a resin / organic white pigment mixture ratio of 100/4 was used.

Comparative Example 11 As a pigment for ink receiving layer,
Except for using the inorganic white pigment used in Example 5,
An adherend to which an image was transferred was produced in exactly the same manner as in Comparative Example 10. The performance evaluation results of the image transfer sheets obtained in Examples 1 to 9 and Comparative Examples 1 to 11 are as listed below.

(1) Examples In each case, the image transfer sheets of Examples 1 to 9 formed an adhesive layer with an ink receiving layer, formed a coating film of the ink receiving layer, and formed an adhesive layer. In addition to the excellent storage properties of rolls (the anti-blocking properties of the rolls), the ink has excellent ink absorbency and ink drying properties, and has excellent inkjet recording suitability with no image bleeding and thermal adhesion to fabric. It was also found that the sheet support was excellent and no deterioration of the sheet support occurred and the sheet support was excellent. The release sheet was easily removed from the integrated laminate, and the adherend on which the image was transferred was excellent in flexibility. Further, in a washing suitability test using a synthetic detergent, the adhesiveness between the image transfer layer and the cloth was good, no image bleeding of the recorded image and no discoloration of the recorded image occurred, and the washing suitability was excellent.

(2) Regarding Comparative Example a) In the case of the image transfer sheet of Comparative Example 1, an adhesive layer was formed, and a blocking phenomenon was caused between the back surface of the release sheet and the adhesive layer on the wound roll. Defects occur, the storage stability is inferior, and the adherend on which the image has been transferred has poor water resistance in a washing suitability test using a synthetic detergent, so that bleeding of the recorded image and discoloration of the recorded image are liable to occur. was there.

B) In the case of the image transfer sheet of Comparative Example 2, the resin for the adhesive layer had a high softening point and a surface temperature of 170.
In the iron adjusted to ℃, the heat melting property of the adhesive layer is inferior and it is difficult to soften, so the surface treatment temperature was changed to 180 ° C and the treatment was performed. As a result, the thermal adhesion of the ink receiving layer and the adhesive layer to the fabric Was good, but when the release sheet was peeled off from the laminate, the paper quality strength of the support was reduced due to thermal deterioration (colored to dark yellow), and the paper breakage occurred, so that the present invention could not be achieved. .

C) In the case of the image transfer sheet of Comparative Example 3, the adhesiveness of the adhesive layer to the ink receiving layer and the fabric is poor due to the high viscosity at the time of heat melting, and the thermal adhesion to the fabric is poor. On the other hand, the adherend to which the image has been transferred has a disadvantage that a transferred image is peeled off in a washing suitability test.

D) In the case of the image transfer sheet of Comparative Example 4, the adhesiveness between the adhesive layer and the ink receiving layer is poor, and the adhesiveness of the adhesive layer to the fabric is poor, so that the thermal adhesion to the fabric is poor. And the integrated laminate could not be obtained.

E) In the case of the image transfer sheets of Comparative Examples 5 to 7 and Comparative Examples 10 and 11, the ink absorptivity is insufficient, and accordingly, the ink drying property is reduced, the occurrence of image bleeding and the image quality are reduced. There was a disadvantage that it was inferior.

F) In the case of the image transfer sheets of Comparative Examples 8 and 9, the adhesion between the adhesive layer and the ink receiving layer was poor, and the amount of the white pigment added was too large, so that the coating strength was high. Was inferior.

[Brief description of the drawings]

FIG. 1 is a sectional view configuration of an image transfer sheet of the present invention.

FIG. 2 is a conceptual diagram illustrating a process of thermally transferring a recorded image to a fabric using the image transfer sheet of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support 2 Release layer 3 Release sheet 4 Adhesive layer 5 Ink receiving layer 6 Image transfer sheet 7 Recorded image 6 Image transfer sheet 7 Recorded image 8 Fabric 9 Laminate

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[Procedure amendment]

[Submission date] April 16, 1997

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Deleted

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Deleted

Claims (5)

[Claims] 1. An image transfer sheet comprising a release sheet comprising a sheet support and a release layer, on which a substantially transparent adhesive layer and an ink receiving layer are sequentially laminated. A transparent adhesive layer is excellent in water resistance, heat melting property and heat bonding property, has a softening point of 90 to 160 ° C and a melt viscosity of 500.
An image transfer sheet comprising a mixture of a polyamide resin having a mPa's / 200 ° C or less and an inorganic pigment. 2. The image transfer sheet according to claim 1, wherein the mixing ratio of the polyamide resin and the inorganic pigment in the adhesive layer is 30 parts by weight or less of the inorganic pigment with respect to 100 parts by weight of the polyamide resin. . 3. An ink receiving layer comprising: a water-soluble polymer substance, an acrylated quaternary ammonium salt type conductive resin, a urethane resin, a polyamide resin, a polyester resin,
3. The image transfer sheet according to claim 1, comprising at least one resin selected from the group consisting of acrylic resin and an acrylic resin, and a white pigment having an oil absorption of 200 ml / 100 g or more. 4. 4. The mixing ratio of the resin and the white pigment is 100
The image transfer sheet according to claim 3, wherein the amount of the white pigment is 100 to 5 parts by weight based on part by weight. 5. A release sheet after recording an image on the ink receiving layer of the image transfer sheet according to any one of claims 1 to 4 by an ink jet recording system, and then facing the ink receiving layer surface with a cloth. An image transfer method, wherein a heat treatment is applied from the back surface or the cloth, the cloth and the image transfer sheet are integrated to form a laminate, and the release sheet is peeled off from the laminate.