JPH0649766A - Reinforced paper imparted with decorative effect without lowering flexibility and usable as substitute for stain fabric - Google Patents

Abstract

PURPOSE:To impart a decorative effect to a paper sheet and improve the strength of the paper without deteriorating the flexibility or rigidity of the processing base material by forming a coating film or pattern when the direct application of a coating liquid composition to the processing base material is impossible. CONSTITUTION:A prescribed amount of a coating liquid composition is applied to a releasing base material to form a surface layer. A processing base material unsuitable for direct coating is laminated by wet-lamination or dry-lamination to the surface layer before or after drying optionally after applying an undercoating agent to the surface layer. The laminate is cooled, the releasing base material is peeled from the processed base material and the separated materials are wound in separate rolls or the laminate is temporarily wound in a roll without peeling and peeled in use. The processed base material may be shipped as a product or finished by surface-treatment, printing, etc.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] A coating film is formed on paper such as paper or non-woven fabric to strengthen it without impairing its flexibility. It relates to fields similar to those used for materials such as packaging.

[0002]

2. Description of the Related Art In the case of making flexible or coloring paper having a relatively low density or forming a coating film, direct printing or coating, or using a separately prepared film with an adhesive agent Although they were laminated or laminated (hereinafter abbreviated as laminate), many of them are rough, dense, stretchable, weak in tensile strength, and easily deformable. There was a limit.

[0003]

When printing or coating directly on paper, it is impossible to process coarse or dense material, material with elongation, material with low tensile strength, material that is easily deformed, etc. There were many In addition, even if it is a processing base material that can be processed, the coating (coating or printing) composition liquid generally penetrates into the processing base material to increase the rigidity and does not have gloss. Or lack of surface uniformity. In addition, when laminating a film, the rigidity and thickness of the film itself affect the utilization of paper materials, and the processed products have high rigidity, and the physical properties of the film are the main factors. It came to appear. The problem is to solve these problems.

[0004]

[Means for Solving the Problems] When applying processing such as coating or printing to paper as a work piece, the processing is carried out directly during the transfer of the material itself. After coating, it is an operation of winding the work piece, and tension is inevitably applied to it. In this invention, the work itself is not directly processed or wound. That is, the coating or printing on the object to be processed was an indirect processing, in other words, a transfer method or a transfer method. Then, in order to accurately adjust or regulate the use of the coating composition liquid used for coating and printing, a gravure type printing machine was used.

[0005]

[Operation] The transfer method uses a release paper or release film or other release substrate as a series of devices from the unwinder to a coating machine, a laminating machine, a drier, a laminating machine, a cooling machine, 1 up to winder
The unwinder to the winder are connected to the machine equipment to be connected in advance, and the coating part of the coating machine is used to adjust the predetermined gaps and the like to apply the coating composition liquid. Then, the substrate for processing (paper or non-woven fabric) is placed on this, and what is called wet lamination, or dry lamination after passing through a dryer, cooled, and processed substrate and release substrate. Peel the material and wind it separately, or wind it together without peeling. That is, in the latter case, rather than the coating pressure and transfer of the coating composition liquid during processing, it is moved by pulling by a winder, in other words, the pulling force by winding (hereinafter referred to as winding tension). ) Is applied to the release base material,
It does not affect the processed substrate and the processed substrate. In the case of the present invention, that is, when the release base material and the processed base material are wound together, the coating pressure and the pulling force (winding tension) of transfer during coating are applied to the release base material. Therefore, it does not affect the processing base material. When a winding tension is applied to the processing base material, the release base material and the processed base material are separated after drying, and only from the separation point to the winding machine. in this case,
Since it has already been processed, there is no problem of deformation. In this case, the main winding tension applied during transfer is
After all, it is related to the release base material. However, as in the past,
When the coating is directly applied to the substrate for processing, it is limited to the one that can withstand the tensile force (winding tension) for transferring it and the coating pressure. That is, for example, it is the lower limit of the usable kraft paper of about 40 g / m ² or more, which has no elongation and strong rigidity.
Even so, the coating pressure cannot be endured, and the phenomenon of seepage through the coating composition liquid is often observed. 20 to 40
Washi paper, spunbond type non-woven fabric, knit, etc. of about g / m ² cannot be processed because they are deformed by the winding tension. However, in the case of the present invention, since the processing is performed by the transfer method as described above, the coating pressure and the winding tension are almost negligible, and therefore, there are stretchable and easily deformed, coarse and dense ones. , Processes such as spunbond of non-woven fabric that have directionality can be processed without problems. That is, the conventional problems can be solved at once. In addition, the uniformity of the coating layer during processing, for example, coating or printing, is different from the conventional direct processing method in that the thickness of the base material for processing is varied, the thickness is changed by coating pressure and winding tension, and The uniformity of the coating layer or coating cannot be expected due to the permeation of the composition liquid for coating, and the coating surface also becomes rough or matte depending on the state of the surface of the processing substrate. The quality will not be stable due to high rigidity. In the case of the indirect coating of the present invention, the permeation of the coating composition liquid can be ignored, and the thickness uniformity of the release base material and its surface state, for example, squeezing (unevenness), gloss, semi-gloss, Since the transfer can be faithfully reflected in matte, the quality is stable, and the flexibility and rigidity of the processing base material can be hardly changed. Furthermore, even in the same range of indirect coating, coating is usually performed on a supporting roll as a release base material, a coating composition liquid, and a non-moving position as a coating machine element. Since it is a fixed knife or roll (abbreviated as coating head) and acts as if it were handled, foreign substances, gels, secondary aggregated pigments, etc. accumulate at the bottom of the coating head and cause streaks. Moreover, only the entire surface can be coated. However, since the gravure roll is used for the coating head and is rotated in the coating head of the present invention, no accumulated deposits are accumulated below the gravure roll,
Since it is sent out as spots or dots, there is no scoring phenomenon, and in some cases, pattern patterns can be printed and can be transferred to the substrate for processing. Therefore, it can be made highly decorative. In summary, it is possible to provide decorativeness and further strengthening without impairing the flexibility (or rigidity) of the processing base material.

[0006]

[Example] An example in which a release base material and a processed base material are co-wound will be described. Unwinding machine, gravure type printing machine,
In mechanical equipment where machine elements such as a laminating machine, a drier, a laminating machine, a cooling machine, a separating roll, and a winding machine (two units) are arranged in series, a release paper (for example, manufactured by Lintec Co., Ltd.) , KP-11, 60 g / m ² , 65 microns)
The gravure type printing machine (for example, a grid pattern 80
Using a mesh gravure roll, a coating composition liquid (for example, a composition liquid of Mica Bond E263 mainly made by Dainichiseika Co., Ltd. and a red pigment) is co-rotated in the same direction as the release paper moving direction. 20g / m ² coating, 50 ° ~ 55
After passing through a dryer at 10 ° C for 10 seconds, a non-woven fabric (for example, Unitec Co., Ltd., 80% pulp, 20% other, 40 g / m ² , also called paper) is placed on the laminating machine as a processing substrate. Then, so-called dry lamination, cooling, and winding as it is. Remove the rolled material, about 50
After leaving still at 24 ° C. for 24 hours and cooling, the release paper and the processed substrate are separated and taken up by a peeling machine separately. Next, using a gravure type printing machine (for example, 120 mesh gravure roll), the processed base material is subjected to a surface modifier (for example, a composition liquid mainly composed of AP Ace manufactured by Dainichiseika Kogyo Co., Ltd .: surface treatment). (Also called agent), dry, cool,
The product is rolled up. The non-woven fabric that is the base material for processing used here is decorative paper (toilet paper or nose paper).
It has a tensile strength equal to or less than that, but it can be seen as a watermark, but it is soft enough that it will not wrinkle when rolled in a hand and put in a bucket. Therefore, this single product cannot withstand mechanical winding, and the coating composition liquid permeates and strikes through and cannot be processed. However,
According to this example, it can be processed, and even if it forms a coating film (thin film) on a non-woven fabric and rolls it by hand, it hardly disturbs the texture of the material and does not cause wrinkles. ， It does not tear easily and has a decorative appearance in terms of color and luster. The above is one example of the embodiment. As for the raw material, the release base material is embossed with a release paper treated with silicone, olefin film or other polymer film, gloss, Semi-gloss, matte, and plastic films such as polyolefin, polyester, polycarbonate, and others can be used. As the processing base material, any type of paper or non-woven fabric can be used. However, the present invention exerts its characteristics with respect to the materials as exemplified above, which cannot be directly coated.
The coating composition liquid can be adjusted according to the physical properties of the substrate for processing or the physical properties of the intended product, but it is usually a thermoplastic synthetic resin-based polymer or elastomer such as polyacrylic acid ester or ethylene. Vinyl acetate copolymer,
It is mainly composed of polyvinyl chloride, polyurethane, polyamide and the like, and as the colorant, dyes, pigments, extender pigments and the like which are used for coloring of polymers and printing inks are used. As the additive, those normally used for polymers and elastomers are used. Surface treatment agents or modifiers such as those used in coating composition liquids,
Also, acrylic resin, silicone resin, polycarbonate as an engineering plastic, etc. are used. An extender pigment or polymer as a gloss adjuster can be freely selected. In addition, as the feel-improving agent, silicone, surfactant, and other oil agents such as fatty acid ester can be freely selected and used. Next, referring to the processing method and the structure as a product, if some of the above-mentioned mechanical equipment is not used,
For example, in the case of wet or dry lamination, it is possible to freely use only one laminating machine before or after the dryer or omit the surface treatment. For film formation, a gravure type printer is used on the release substrate, so the coating amount can be changed or film formation can be performed by adjusting the surface shape of the gravure roll or the gap between the support rolls. It is also possible to freely select to form a pattern and transfer it onto the substrate for processing. Depending on these processing methods, the product configuration is basically as follows (a) (b) (c). (B) Surface film (or surface layer) directly on the substrate for processing
To form. (B) An undercoat layer or an adhesive layer is formed on a substrate for processing, and a surface layer is formed thereon. (C) A surface treatment agent component is adhered on each surface layer of the constituents of (A) and (B). In addition to the above structure, an intermediate layer may be provided between the surface layer and the undercoat layer, or a plurality of surface layers may be provided.

[0007]

EFFECTS OF THE INVENTION A gravure type printing machine is used for coating on a release base material to form a film or a kind of pattern, and a laminating process is performed by a transfer method. It can be processed without regard to the density of fiber density, thickness, texture, or softness of paper or non-woven fabric, etc., and imparts decorativeness and strengthens it without impairing its flexibility or softness. Could be something. Therefore, it is possible to substitute soft cloth such as satin fabric. Also,
Since the gravure type printing machine is used, the coating amount can be regulated, and in the processing method, it can rotate in the same direction as the transfer direction of the release base material, so that impurities, foreign matters, aggregates, gel Since substances and the like are sent to the coating composition liquid bank without being accumulated, troubles such as scoring can be avoided, and products of quality controlled quality can be obtained.

Claims (4)

[Claims] 1. A predetermined amount of a coating composition liquid or printing ink capable of forming a film on a release substrate or a release base material such as a release film is entirely covered by using a gravure type printing machine. Or pattern-wise, and as a substrate for processing on top of this, it is difficult to apply directly, thin, rough structure or coarse density, or stretchable or weak tensile strength Place it on the surface, and before or after drying, wet or dry laminate to eliminate the permeation of the coating composition liquid or printing ink, process it without taking up the winding tension, cool it, and immediately after that, Alternatively, after winding once, the release base material and the processed base material are peeled off to show the appearance of the base material in a natural state, or the gloss, color tone, surface smoothness, and squeezing are adjusted. And the decorativeness was given without impairing the flexibility of the processing base material. Reinforced papers that replace textiles. 2. Regardless of the type of dispersion medium of the coating composition liquid, an agent for adjusting the physical properties of the wetting of the release substrate is used,
The satin woven fabric according to claim 1, characterized in that the release composition is processed by facilitating the application of the coating composition liquid, and the decorativeness is imparted without impairing the flexibility. Reinforced paper. 3. A mold release base material is coated with a predetermined amount of an upper layer coating composition liquid having good wet physical properties to form a film, and the wet physical properties of the mold release base material are evaluated. Applying a non-problematic primer or adhesive, or an intermediate layer solution, wet or dry laminating the paper, drying or curing, and then peeling the release paper from the film-forming laminate. Reinforced paper that replaces satin fabric with decorative properties without sacrificing flexibility. 4. A surface treating agent comprising a synthetic resin composition liquid, an elastomer composition liquid, or the like, or a printing ink, which is applied to the surface of a reinforced paper having a coating film of one layer or a plurality of layers by using a gravure type printer. Reinforced paper that replaces satin fabric with decorative properties without impairing flexibility, which is characterized by printing or coating and finishing to give a change in its appearance or touch.