JPH06106665A - Fluffy paper like fiber sheet article - Google Patents

Abstract

PURPOSE:To obtain a fluffy paper like fiber sheet article having bulkiness by applying crumpling processing to a paper like fiber sheet article. CONSTITUTION:Rolling processing or polymer processing is applied to both surfaces of a paper like fiber sheet article or the same sheet article or other fiber sheet article is laminated to the sheet article through an adhesive to provide a density gradient or rigidity difference thereto to enhance crumpling processing effect and the range of the processable paper like fiber sheet article is expanded to impart fluffy appearance. As a raw sheet like article, a yarn dyed fabric or a piece dye fabric after crumpling processing is used or an org. medium- or low-molecular substance soln. or an org. polymer soln. is applied to protect or hold a fluffy state to diversify a product and to enhance decorativeness.

Description

Detailed Description of the Invention

[0001]

[Industrial application] Fluffy paper-like fibrous sheet material is a stationery made of flocked sheets or cloths,
It relates to materials in the same fields as products such as packaging sheets, clothing, and wall coverings.

[0002]

2. Description of the Related Art Conventionally, there have been paper-like fibrous sheet-like materials that have been kneaded, wrinkled, and softened, or have a voluminous feel. There wasn't.

[0003]

[Problem to be Solved by the Invention] To make a paper-like fibrous sheet-like material to be fluffed easily by subjecting it to some processing. Also, to improve the retention of this fluff,
The issue is to add decorativeness.

[0004]

[Means for solving the problem] Regarding fluffing a paper-like fiber sheet,
Create a density gradient or rigidity difference. Originally, when implementing, choose one that meets these conditions, or roll one that does not meet this condition, or resin-process either the front or back surface with an organic low-molecular solution or polymer solution. In addition, a paper-like fibrous sheet material having a higher rigidity than the object to be processed or a fibrous sheet material such as cloth is attached to form a composite sheet material, or if the difference in rigidity is small, an adhesive or the like is used. By using it, the rigidity of the attachment area and its vicinity is made larger than that of other areas. The thus obtained material is kneaded and fluffed. To maintain this fluffed state, a low-molecular-weight organic medium solution or a dilute organic polymer solution is applied, sprayed, or impregnated to set. In order to provide decorativeness, originally, a partially patterned pattern, or a completely colored pattern, in other words, a pre-dyed pattern, or after kneading is used. Color processing (dying).

[0005]

[Operation] In the state of the front and back of a paper-like fiber sheet (hereinafter referred to as a work piece), mechanically or resin-processing one of the surfaces makes it a density When it is bent due to a gradient or a difference in rigidity, the bending resistance is stronger than that of the unprocessed product and it can be bent at an acute angle. For example, in Japanese Patent Publication No. Sho 59-6953, a wrinkling device for synthetic leather, a kneading machine consisting of upper, middle and lower tiers, in other words, a gripper consisting of a pair of concavo-convex rods,
It is located in the upper, middle and lower tiers. With this gripper, the workpiece is clamped at a certain interval, the middle gripper (rubber) is set at a fixed position, and the upper gripper and the lower gripper are brought close to this to reduce the distance. The work piece is loosened between the gripping machines and is easily bent at an acute angle to form wrinkles. Next, when the gripper is operated to rotate, slide, or oscillate, a wrinkle like a tortoiseshell is gradually generated in a state like a crumple, and a new or overlapping wrinkle is generated. The entanglement and joints of the fibers are loosened or come off from the convex and concave portions, and fluffing occurs. As a result, it becomes bulky and gives a feeling of volume (bulkyness) and becomes flexible. Looking at the workpieces that have a density gradient or rigidity difference (hereinafter referred to as "non-homogeneous sheet material") and those that do not (hereinafter referred to as "homogeneous sheet material"), the workpieces are spaced at certain intervals. When sandwiched and the space between them is shortened, the former easily bends to form sharp wrinkles, and the surface on the side of low density or rigidity is greatly stretched and in some cases damaged, and the entangled or joined parts of the fiber Loosen, come off, or cut a little. In other words, the energy applied by the rubbing process is that the energy applied to the one with high rigidity or high density propagates to the one with lower rigidity or the lower density, and that large energy is applied there. become. On the other hand, a flexible material or a material having a uniform distribution of rigidity and density is less likely to be bent even if bent, has an obtuse wrinkle, and is not so much damaged or changed as much as the former. When rubbing is performed in such a state, the energy range applied to the wrinkle irregularities of the workpiece itself, the contact between the workpieces, the contact area of the gripper with the gripper, etc. Since the contact areas are strong and the respective contact areas are small, and thus the friction area is also small, the friction is concentrated and repeated. On the other hand, the homogeneous sheet takes the opposite phenomenon, and the energy and frictional force applied to the workpiece itself are dispersed and repeated. That is, the fluff of the heterogeneous sheet is larger than that of the homogeneous sheet. However, this effect is obtained because of the additive action of the factor of rubbing the inhomogeneous sheet.

[0006]

[Example] Basis weight of about 120 g / m ² , thickness of 0.18 m
m (for example, manufactured by Egoe Co., Ltd., 2 sheets, cotton Torinoko paper No. 137) on the surface of polyamide adhesive (for example, Fuji Kasei Kogyo Co., Ltd., Tomeido No. 39).
4 was adjusted to a solid content of 40% with a mixed solvent and a small amount of epoxy resin was added, and about 40 g / m ^{2 was} coated, and backing paper (for example, Kishu Paper Co., Ltd., flame retardant paper E70 ) Is attached to form a composite sheet. Next, put this on a kneading machine. As the rubbing machine, for example, the wrinkle device of Japanese Patent Publication No. 59-6953 is used. The composite sheet is sandwiched between the upper, middle, and lower grippers that are arranged at a certain interval, and the upper and lower grippers are brought closer to the middle grippers, respectively. The slack is created, and the grabber is turned or swung to perform rubbing processing as if it were like a hand rub. In this way, the fibrous tissue is
Unraveled, thickness of 0.18 mm is about 0.35 mm
, The volume increases, becomes soft, and fluffs. If you rub it to the extreme, it will be about 0.55 mm. This kneaded product is dipped in a blue dyeing solution (for example, a solution consisting of Acid Blue 183, acetic acid, and water) and dried. In this embodiment, the adhesive adhesion region in the case of forming the composite sheet has rigidity more than the other parts, and in the rubbing process, the one having lower rigidity is greatly influenced by the one having larger rigidity. 、 While softening from wrinkling, the one with less rigidity loosens the fiber structure and causes fine cracks, and the entanglement and joining of long and short fibers are loosened or cut, resulting in fluffing. Occurs. The effect of kneading is that the greater the difference in rigidity, the greater the difference in sparseness and denseness (the greater the density gradient), and the more uneven the density distribution of the sheet, the greater the effect of wrinkling and softening. Appears. By making the composite sheet-like material, the dyeing process also has improved water resistance, enables dyeing, and has good penetrability without hardening the work piece, but due to the dense and dense state of the composite sheet-like material, it naturally It produces various shades of dyeing, forms a certain pattern, and enhances decorativeness. The above shows one example of the implementation.
It means the front side and back side in the case of single sheet or two sheets or several sheets. In addition to exemplifying that the density gradient and the difference in rigidity are made, the rigidity of the backing or the composite sheet may be larger than that of the adherend even if the adhesive has low rigidity. Rolling (embossing roll) effect appears, or polymer solution is applied. Of course, if the material itself matches or is close to such conditions, it can be used as it is. Further, the dyed object can be used as it is, but it may be dyed afterwards. Materials used as composite materials or linings are natural or synthetic fiber sheet materials such as papers, cloths, and non-woven fabrics. In order to protect or maintain the fluffiness, an organic medium / low molecular weight solution (eg, 8 nylon with a degree of polymerization of about 300, or a vinyl-based copolymer with a degree of polymerization of about 450), or a degree of polymerization of about 1000 or more is used. Spray or impregnate a transparent or colored product such as a dilute polymer solution.

[0007]

[Effect of the Invention] Even if it is flexible or has some rigidity,
Even if it is homogeneous and does not have a volume feeling or bulkiness even if it is rubbed, or it does not fluff only by forming wrinkles, it can be done by adding a rigidity difference and a density gradient. It became so. In addition, it was possible to diversify the product and enhance the decorative property by using a dyed paper-like fiber sheet material or by dyeing after rubbing. Then, the fluffing state is protected or retained by processing with an organic low molecular weight solution or a high molecular weight solution. Reference: Japanese Patent Publication Sho 59-6953

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Claims (5)

[Claims] 1. A paper-like fiber sheet material having a density gradient or rigidity difference between the front and back surfaces, or a paper or a natural fiber sheet material that has been rolled or polymer-processed to impart a density gradient or rigidity. Etc. at a certain interval and sandwiched between two points with a kneading roll, narrowing this interval to create slack, as it is, or moisturizing, rotating or rocking to perform a kneading process, A fluffy paper-like fibrous sheet characterized by loosening, fuzzing, or giving bulky properties to the one having less density or rigidity. 2. A density gradient and rigidity as a composite sheet-like material by adhering a paper-like fiber-like material such as a cloth or the like having a density and rigidity higher than that of a paper-like fiber-like material as a base material. A fluffy paper-like fibrous sheet according to claim 1, characterized in that the base material side is fluffed or bulky by giving a difference and rubbing. . 3. A paper-like fibrous sheet-like material as a base material is adhered to one surface of the same or natural or synthetic fibrous sheet-like material as the base material via an adhesive, and the adhesion area and its vicinity are provided. The fluffed shape according to claim 1, characterized in that the surface of the base material side is fluffed or bulky by giving it a higher rigidity than the other parts and rubbing it. Paper-like fibrous sheet material. 4. A paper-like fibrous sheet having a density gradient or a difference in rigidity between the front and back of the sheet-like material is subjected to a rubbing process and fluffed to obtain a dilute polymer solution or a low-molecular organic solution. The fluffy paper-like fibrous sheet according to claim 1, which is coated, sprayed or impregnated to protect or maintain the fluffed state. 5. The fluffy shape according to claim 1, characterized in that the paper-like fibrous sheet material dyed in advance is kneaded or dyed after the kneading to enhance the decorativeness. Paper-like fibrous sheet material.