JPH02307991A - Processed material with wrinkle having damaged part of constructing layer in composite sheet-like material - Google Patents

Abstract

PURPOSE:To make possible perform process having high decorativeness of color variation with interference of light by forming a polymer film exhibiting specific physical properties on base material such as papers or fiber sheet, performing wrinkling process such as flexing or bending and damaging a part of the film. CONSTITUTION:Two polymer solutions having same species and different qualities or different species and being expected to give small elongation and high rigidity are alternately or randomly applied on base materials such as papers, fibrous sheet-like materials or plastic sheet to form composite film-like material. Next, the film-like material is subjected to wrinkling such as beating, flexing or bending to damage or break a part of a layer of the film-like material. Resultant material is a novel processed material with wrinkle having high decorativeness of color variation with interference of light, etc.

Description

[Detailed Description of the Invention] (a) Industrial Application Field The composite sheet-like product of the present invention can be used as it is or after being molded to be used as a packaging material for personal items such as bags, decorations such as light covers and displays, etc. used for

(-) PRIOR TECHNOLOGY Conventionally, even when the wrinkled processed composite sheet material has damaged its constituent layers, it has mainly been applied to the base material 2, such as paper.

It was not intended to be used for decoration with the front side.

(c) Problems to be solved by the invention: Damage to the front surface of a composite sheet-like article.

Although this is usually considered a defect, it is not possible to create such a product with additional decorative value by constructing it with a general sheet or film.

(ii) Means for solving the problem When applying wrinkles to a composite sheet, if the same force is applied to either the front side, the back side, or both sides, the constituent layers The sheet-like article is made of a material that can damage or break any layer or portion of the sheet.

In other words, a plastic film-like layer constructed on a base material such as paper, fiber sheet, or plastic sheet, if it is a single layer, may contain a filler-like substance or be in a non-uniform state such as a polymer blend. In the case of a multi-layer structure, the structure should be made of the same type and different types, or a combination of different types of layers.

(E) For production What is the force applied to the sheet material during the wrinkle processing?

For example, in the case of kneading, forces such as compression, tension, and twisting are applied, depending on the processing method. On the other hand, the tensile strength or resistance of the constituent layers of the workpiece is different.

In the case of plastic film-like laminates, if fillers or polymer blends are inhomogeneous, damage or failure generally occurs at the mixing interface.

Also, in the case of a multilayered body consisting of a combination of layers of the same type but different or different, one of the constituent layers.

Damage and breakage are most likely to occur in layers or parts that have low elongation and high rigidity. Damage, breakage, or peeling phenomena are also observed in the boundary areas of each layer.

(f) Example As a base material, paper with a basis weight of about 709/l is coated with about 2097 rd of acrylic/vinyl acetate adhesive, and a plastic laminated film is coated with a thickness of 16 to 19 microns (for example, iridescent). Dry laminate the film IFX5121 (manufactured by Marl Corporation, USA), hold this composite sheet with a gripper at a predetermined interval,
Next, the interval between the gripping tools is narrowed and the gripping tools are swung, and the creasing process is sequentially performed as if by one-handed kneading.

In this case, the iridescent film has polymethyl methacrylic films on the front and back sides, and there are multiple layers of polyester film and polymethyl methacrylic film between them, and any of the layers may be randomly damaged or damaged. Or cracks91 appear as if the glass has been broken, exhibiting a variety of reflective properties.

The material of the constituent layers of this iridescent film differs depending on the type, but the thickness as a laminate film is 14 to 4
0 microns, and within this thickness, thin films form layers that interfere with light and exhibit a blue/green or red/green color in appearance, and this type of film is generally called Raypo or Aurora film. It is said.

The film configurations are pp/pp and PS/PP (front side polypropylene/multilayer of intermediate polypropylene and polystyrene/back side polypropylene), and the following are similar configurations.For example, EVA/El/A, PS/PP (EVfi,
-t-5rvn-vinyl acetate), engineered PMMA/PE5T
.

PMMA/Engineering PMMA (IP/Impact, MMA/
Methyl methacrylic, PE5T/polyester), PE
There are 5T/PKST, PMMA/PE5T, etc.

The above is an example of implementation, but as a plastic film constructed on a base material.

A metallic film in which aluminum is vacuum-deposited on a polyester film or a vinyl film, a multilayer film formed by repeatedly applying and drying various plastic solutions, or a film formed by laminating various films and integrating them may also be used. However, in that case, it is better to use different types of the same species, or a combination of different types. Regarding the physical properties of film formation, a combination of materials with different elongation and rigidity is good.

When using a single layer, glass beads,
It is preferable to use polymers that are incompatible with the polymer, such as silica and mica, or to blend the polymers in a state where the polymers are difficult to miscible with each other or appear to be miscible with each other.

For example, polyvinyl chloride (PVC) and polystyrene (P
S), IPMMA and PS.

For wrinkle processing, beating, bending, folding, embossing, drawing, rubbing, etc. are used.

Drawing and rolling are particularly effective.

In this process, stress is applied to the composite sheet material to be processed, but due to differences in elongation, rigidity, and tensile strength of the constituent layers, damage, breakage, or cracks may occur at any location inside or outside the constituent layers. It causes changes in appearance, interferes with light, reflects diffusely, and acts like a prism, and its physical properties become difficult to recover elastically due to partial damage or breakage, causing permanent distortion. Make it stable like distortion.

To enhance the decorativeness, the membrane or film on the base material may be colored or printed, or the base material to be laminated may be printed or the adhesive may be colored. .

Further, after the wrinkle processing, only the top of the wrinkles is colored by printing or the like. So-called top or concave valley processing may be performed. In this case, the damaged or broken part is filled with colored liquid to serve as reinforcement.

Reinforcement alone or gloss adjustment can be achieved by applying an uncolored polymer solution. (g) Effects of the invention When constructing a polymer film on a base material such as paper, fiber sheet, plastic film, etc., it contains or blends materials that are incompatible with each other. However, it is also possible to have a different or different multi-layer structure with low elongation and high rigidity.

Wrinkling may damage, break, or crack a portion of it. Taking advantage of the conventionally disadvantageous condition of easy damage, the product is not just a wrinkled product in terms of appearance, but is decorated with light interference, diffused reflection, a prismatic effect, and color changes. It is possible to improve the elasticity and to measure the retention stability of wrinkle distortion, and it can be developed into an alternative and novel application as a product that has never existed before.

Claims (1)

[Claims] 1. A film made by using paper, a fiber sheet, a plastic sheet, etc. as a base material, and coating the film with a polymer solution that reduces the elongation of the film and increases the rigidity. form a composite sheet, beat, bend, bend,
Wrinkles that damage a part of the constituent layers of a composite sheet-like material, characterized by wrinkles created by embossing, drawing, rolling, etc., and damaging or breaking a part of the constituent layers of the composite sheet-like material. Processed body. 2. On substrates such as paper, fiber sheets, and plastic sheets, polymer solutions of the same type and different types, or different types, are coated alternately or randomly so that the elongation of the film is small and the rigidity is large. to form a composite membrane,
Wrinkles that damage a part of the constituent layer of a composite sheet-like article according to claim 1, characterized in that a part of the constituent layer of the composite film-like body is damaged or destroyed by applying wrinkle processing. Processed body. 3. On a base material such as paper, fiber sheet, plastic sheet, etc., membranes of the same or different types, or plastic films are laminated alternately or randomly, and this composite sheet is wrinkled. The composite sheet-like product according to claim 1, wherein a part of the constituent layers of the laminated plastic film is damaged or broken. A wrinkled processed body. 4. A composite film or sheet is prepared by laminating plastic films of the same or different types alternately or randomly, on a base material such as paper, a fiber sheet, or a plastic sheet, and this is wrinkled. A composite sheet-like product according to claim 1, characterized in that the composite film or sheet is processed to damage a part of the constituent layers of the composite film or sheet. Wrinkled body. 5. Applying a polymeric solution or colored liquid to the damaged or damaged part of a wrinkled processed product that has damaged a part of the constituent layers of a composite sheet-like product, and filling and reinforcing that part or changing the appearance. A wrinkled processed product in which a part of the constituent layers of the composite sheet-like product according to claim 1 is damaged.