JPH0243035A - Sheet-like releasant, in which difference of thickness is produced by forcibly creasing - Google Patents

Abstract

PURPOSE:To give cubic effect by a method wherein synthetic resin composition is deposited locally onto the surface, to which releasant is applied, of base material so as to make the difference of thickness in the base material due to the deposited portion and non-deposited portion and a releasant layer is formed on the resultant surface and finally creasing is done on said surface. CONSTITUTION:Composition, which is mainly composed of surface treated ultra fine particle calcium carbonate-containing hard type acrylic emulsion, is polka- dottedly printed on a paper with a rotary screen printing machine and dried. After that, toluene solution of chlorinated polypropylene as undercoating agent is applied on the resultant paper with a gravure coater and dried. Next, polypropylene as releasant is extruded from an extruder and stretched so as to be hot-laminated onto the undercoating agent. Finally, the sheet-like releasant obtained as described above is creased. Thus, the clear-cut external appearance and cubic effect are given to the releasant and the diversified creasing and bulky impression can be given to the releasant.

Description

Detailed Description of the Invention (a) Industrial Application Field A polymer solution such as a solution of a vinyl composition or a solution of a polyurethane composition is coated on a sheet-like mold release material to form a film,
Synthetic leather, etc. can be produced by sequentially coating and forming films on these coating films, or by laminating a base fabric in the film-forming process after coating and drying, and then using a transfer or trochanter method to peel off the laminate using a release agent. Used in fields related to mold release materials used in manufacturing.

(b) Conventional technology Conventionally, a thin film layer of silicone, polyolefin, etc., which serves as a mold release agent, is formed on paper of a predetermined uniform thickness to a uniform thickness to create a smooth surface or an embossed surface. It was provided.

(c) Problems to be solved by the invention Conventionally, shibori was made by
The design or leather is used as the original shape, and this is embossed on the surface on which the mold release agent is formed. It was uniform.

This is because the gap between the release agent surface and the roll or knife is made to correspond to the coating thickness of the polymer solution.

While this was easy to manage, it was monolithic and lacked variety, resulting in a lack of natural, three-dimensional, or porium feel.

2) Means to solve the problem For stamping, we used wrinkle processing instead of embossing. Then, in order to further diversify the wrinkling and make it more effective, the paper base material (hereinafter referred to as the base material) was processed.

That is, the synthetic resin composition is applied to two parts of the surface of the base material to be coated with a mold release agent, so that there is a difference in thickness between the processed part and the unprocessed part of the base material.

As another method, the inside of the base material was treated with a synthetic resin composition to create a stiffness difference.

Next, a release agent layer was formed thereon, and wrinkles were applied to this layer.

(e) Effect: When a wrinkle is simply processed, whether the wrinkle pattern is wavy, a broken tortoiseshell pattern, or a broken lattice pattern, the large and small wrinkles will disappear naturally on the extension line. ing.

However, as in the present invention, by creating thick and thin parts in the processed part of the base material and creating a stiffness difference, large and small wrinkles change the formation of wrinkles in that part, The corrugator muscles become dispersed and branched.

And in the vicinity of the processed part and the non-processed part.

Partial loosening, unraveling, or shearing of the fibers of the base material also differ.

The force for wrinkling is concentrated near the part to be processed.
Small wrinkles are formed, and there are many wrinkles that are sharp at a distance and obtuse angles at unprocessed areas.

In this way, an appearance and three-dimensional effect with large or intense undulations that cannot be seen in embossing is given, and the wrinkles are diversified and a sense of volume is given.

(F) Example Example 1゜Containing 30% of ultrafine particle calcium carbonate treated on two surfaces on paper of 14597 trt with thickness 0.17 mtrb.
・-Print a polka dot pattern using a rotary screen machine using a composition mainly composed of dotype acrylic emulsion,
Dry (the thickness of the printed and dried coated area is approximately 40 microns).

On top of this, 10% of chlorinated polypropylene is added as a primer.
Approximately 12 f/l of toluene solution using a gravure coater
Apply at rt and dry.

Next, polypropylene, which will serve as a mold release agent, is extruded from an extruder and stretched to a thickness of about 25 microns.

Hot-laminate the above onto the primer.

The sheet-like release material thus obtained is wrinkled.

For the wrinkling process, two rolls of sheet-like release material are rolled out at a predetermined interval in the length (flow) direction.

Each gripper is gripped with a pair of grippers, and the distance between the grippers is narrowed, and the two grippers are swung or rotated, as if grasping and massaging, and the first gripper is gripped. Release, 140°
Heat for 30 to 50 seconds at 145°C to 145°C, cool and wind.

In this case, the wrinkles will be in the style of "<misaligned stone grain".

The formation of wrinkles in the corrugator major muscle is inhibited in the printed area, and the corrugator major muscle enters beyond that area. Near the printed area, thin wrinkles are randomly formed on all sides.

Example 2 On 8097rrtO paper with a thickness of 0.15 mm, a coarse grid pattern with intervals of about 2Q mm was printed using a screen printing machine using a composition mainly composed of epoxy resin emulsion (thickness: 80 to 100 mm). Micron) and passed over a Pachyum cylinder to promote penetration of the printing solution inside the paper, dried and cured.

Next, in the same manner as in Example 1, undercoating, forming a release agent layer,
Perform wrinkle processing.

Note that embossing is performed after forming the release agent layer.

After diversifying the pattern and improving the thickness accuracy of the base material to impart rigidity, wrinkle processing may be performed.

In this case, the large pattern is "<shifted turtle shell".
It exhibits a pattern, with many wrinkles branching in different directions near the checkered lines.

The above is an example of the implementation, but the base materials include 2 papers, processed products thereof, fiber sheet materials 1, for example, inorganic materials such as glass cloth and carbon fiber fabrics, non-woven fabrics, Fabrics with good dimensional stability such as woven fabrics with little elongation and shrinkage, and synthetic resin processed products thereof can be used.

Paper products include Western paper and fiber sheet materials.

Stiff products such as synthetic resin products are effective for wrinkling.

For paper and nonwoven fabrics, the effect of wrinkle processing will be improved if short fibers or rigid fibers are mixed.

Synthetic resin compositions that partially process this base material and attach it to the surface to give it thickness, and impregnate it inside to give it rigidity include cellulose, vinyl, olefin, acrylic, Polyamide-based, polyester-based, melamine-based fillers containing additives can be used.

These can be freely colored to indicate heat resistance, type classification, patterning, etc.

Next, as the type of undercoat for the mold release agent, a modified product of the same type or similar to the mold release agent, a synthetic resin composition for base material processing, etc. are used. However, the primer may not be used depending on the case.

Regarding the mold release agent, the m-type agent layer is formed by coating or film lamination, but as in the past, silicone-based, polyolefin-based (polypropylene)
The polymer solution is not limited to the above, and any material can be used as long as it has good mold releasability and heat resistance under processing conditions for the polymer solution to be coated.

For example, polyethylene, polyamide, boria heptatar,
Synthetic resins such as polycarbonate, polyester, and fluorine. These may be used alone or in combination. For example, a polyolefin film may be laminated and then silicone coated.

Treatment with synthetic resin composition of the base material, undercoating, mold release agent, etc. If you have difficulty, printing, textile printing, spray impregnation, painting (
Coating, electrostatic painting), etc. can be used, and the release agent can be made into a film by extrusion processing and then laminated.

And for wrinkle processing, bending and bending.

Methods such as beating (e.g., drumming) and 9-clamping can be used. In this case, pretreatment of the mold release material to facilitate processing includes heating, cooling, humidification, etc., and the same processing as the pretreatment can also be used to set the post-treatment.

Further, as a processing step, in addition to the examples, a synthetic resin composition may be partially attached or impregnated onto a paper or fiber sheet as a base material, and the synthetic resin composition may be partially applied or impregnated as it is.

The plastic film may be coated or impregnated with a polymer solution, or the plastic film may be laminated or similarly treated with a substance that acts as a mold release agent to provide a wrinkled finish, and then the mold release agent may be applied.

In this case, it can also be used to repair the mold release agent layer etc. if it is damaged due to the wrinkling process, and the mold release effect can be further enhanced.

The fact that the product of the present invention forms a thickness difference means that it is first partially processed with a synthetic resin composition and then forcibly wrinkled, and the processed periphery forms wrinkles. The base material is Oniyaya.

The overall unevenness and undulations caused by the wrinkling process, which causes a phenomenon such as peeling and becomes thicker than the unprocessed part, can cause the thickness of the film to be thicker or thinner than previously seen. Differences occur partially, giving a three-dimensional effect and decorativeness.

(g) Effects of the invention The paper base material is partially processed with a synthetic resin composition.

When wrinkle processing is performed, small branches are formed within the large wrinkles, and the large wrinkles change in a different way from the unprocessed areas near the 9 partially processed areas, and the wrinkles appear to be dispersed. This results in a variety of patterns.

In addition, fiber entanglement inside the base material, separation,
The deviation also differs between the processed and non-processed parts.

It gives a porium feel to the whole, and the unevenness is also large, which cannot be obtained with simple embossing, and the wrinkles have acute and obtuse angles, giving it a natural three-dimensional effect.

Claims (1)

[Scope of Claims] 1 A synthetic resin composition is partially adhered or impregnated onto a paper or fiber sheet as a base material by printing, textile printing, spraying, impregnation, painting, etc., and then coating thereon. The entire surface is coated with a synthetic resin or elastomer that acts as a mold release agent for the polymer solution, or a film-like material is laminated to serve as a mold release material, and further processes such as bending, bending, beating, and rolling are performed. A sheet-like mold release material that has been forcibly wrinkled to form a difference in thickness. 2. A synthetic resin composition is partially attached to a paper or fiber sheet as a base material by printing, textile printing, spraying, painting, etc. to form a difference in thickness between the processed part and the unprocessed part of the base material. Claim 1 characterized in that
A sheet-like mold release material that is forcibly wrinkled to form a difference in thickness as described in Section 2. 3. A patent characterized in that a synthetic resin composition is printed, press-fitted, impregnated, etc. into the inside of a paper or fiber sheet as a base material to create a stiffness difference between a processed part and an unprocessed part. A sheet-like mold release material which is forcibly wrinkled to form a difference in thickness as claimed in claim 1. 4 A synthetic resin composition is partially adhered or impregnated onto a sheet of paper or fiber as a base material, either as is or after a thin film layer like a mold release agent is formed and wrinkled, the mold release agent is applied. 2. A sheet-like release material which is forcibly wrinkled to form a difference in thickness as claimed in claim 1, characterized in that it is coated with or sprayed. 5. A sheet-like release material that is forcibly wrinkled to form a difference in thickness as set forth in claim 1, wherein the sheet-like release material is embossed and further wrinkled. . 6. Perform heating, cooling, humidification, etc. before and after wrinkle processing.
The forcibly wrinkled material as set forth in claim 1 is characterized in that it is a preliminary treatment to facilitate the wrinkled process, and a setting is performed for stability of formation after the wrinkled process. A sheet-like mold release material with different thicknesses.