JP2002137299A - Manufacturing method for laminated sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that wrinkles or indentations of the surface of a laminated sheet or faulty adhesion thereof brings about peeling or the like and causes a fault on the occasion of contact bonding or rolling of the laminated sheet. SOLUTION: On the occasion of manufacturing the laminated sheet, layers constituting the laminated sheet are subjected to contact bonding and rolling by one layer separately, not being laminated and subjected to the contact bonding and rolling at once.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a method for producing a laminated sheet. More specifically, the present invention relates to a laminated sheet mainly used for flooring and the like, and includes a plurality of layers such as a film layer, a resin layer, and a base cloth layer. The present invention relates to a method for producing a laminated sheet comprising the above layers.

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional laminated sheet employs a plurality of layers such as a film layer, a resin layer, and a base fabric layer by using a plurality of rolls, and heat-presses at once between each roll. Then, it is rolled by passing through another roll to form one laminated sheet.

[0003] When a laminated sheet is produced, the film layer, which mainly serves as a surface layer, has a role of protecting the laminated sheet itself, such as prevention of surface contamination and scratches, and a role related to design, such as the design of the laminated sheet. .

[0004] The resin layer has a role as a cushion for absorbing shock when a person walks.

[0005] The base fabric layer has a role of coping with unevenness of a road surface or a floor surface to be laid, and preventing slippage of the laminated sheet when the laminated sheet is constructed.

As described above, the conventional method of manufacturing a laminated sheet is to manufacture a plurality of layers, such as a film layer, a resin layer, and a base fabric layer, by thermocompression bonding and rolling at once using a roll.

[0007] Each of the above three layers is overlapped between the first roll and the second roll to be wound first, pressed together at a time, and then rolled by the second roll and the third roll to form a laminated sheet. Manufacturing.

This method is a measure against wrinkles and irregularities that may occur when the laminated sheet is pressed. This is because the longer the rolling process after the pressing, the higher the possibility that the wrinkles and unevenness of the laminated sheet can be smoothed.

[0009] However, even if the rolling process of the laminated sheet is long, wrinkles and irregularities of the laminated sheet once pressed are not completely improved. Therefore, the wrinkles and unevenness may cause a defect.

Furthermore, in the conventional method for manufacturing a laminated sheet of the present invention, since a plurality of layers are pressed at once, poor adhesion is likely to occur. Therefore, there is a possibility that each layer constituting the laminated sheet may be peeled off in a subsequent step of manufacturing the laminated sheet.

[0011]

The problem to be solved by the present invention is to reduce the peeling of each of the layers constituting the laminated sheet due to poor adhesion caused by the conventional method for producing a laminated sheet composed of a plurality of layers. is there.

Another object to be solved by the present invention is to reduce factors that cause defects, such as wrinkles and irregularities occurring in each layer constituting the laminated sheet.

[0013]

SUMMARY OF THE INVENTION The inventor of the present invention has considered that since the above-mentioned laminated sheet is pressure-bonded at the same time, poor adhesion, wrinkles, and irregularities may occur. Therefore, a laminated sheet was manufactured by a method characterized by separately laminating each layer constituting the laminated sheet, and then pressing and rolling each layer.

[0014]

FIG. 1 is a diagram showing a method of manufacturing a laminated sheet composed of three layers, a film layer, a resin layer, and a base fabric layer. 1 is a first roll, 2 is a second roll, 3 is a third roll, and 4 is a fourth roll. 5 is a base fabric layer, 6 is a resin layer, 7 is a film layer, and 8 is a laminated sheet.

FIG. 2 shows three layers of a film layer, a resin layer, and a base fabric layer.
It is a figure of the conventional manufacturing method which presses and rolls the laminated sheet comprised by a layer at once, and manufactures it.

In the present invention, four rolls are used, and a three-layer structure of a film layer, a resin layer, and a base fabric layer is manufactured. At this time, the respective layers were press-bonded with the base fabric layer and the resin layer with the first roll and the second roll, and the two layers and the film layer with the third roll and the fourth roll, respectively.

First, regarding the base cloth layer and the resin layer, the base cloth layer
From the bottom of the first roll, set to enter the roll,
The resin layer is set so as to enter directly between the first roll and the second roll.

Accordingly, the base fabric layer set so as to enter the lower portion of the first roll is stretched by the first roll, and the surface becomes smooth. The stretched and smoothed base fabric layer overlaps the resin layer and is pressed between the first roll and the second roll.

The press-bonded base fabric layer and the resin layer are further rolled and stretched by the second roll and the third roll, and become smooth. The stretched and smoothed base fabric layer and resin layer overlap the film layer, and are pressed and rolled between a third roll and a fourth roll to complete a laminated sheet having a smooth surface.

As described above, since a plurality of layers are pressure-bonded one by one, it is possible to bond more firmly than in the conventional method of pressing all at once, and the bonding failure is reduced.

[0021]

As described above, when manufacturing a laminated sheet,
Each layer constituting the laminated sheet is pressed one by one, and when the number of layers constituting the laminated sheet is small, rolling and stretching are performed in subsequent steps, so that the surface smoothness is more maintained. Was.

Furthermore, since the laminated sheets are pressure-bonded one by one, the adhesive strength of each layer is increased, and the possibility of poor adhesion is reduced.

[Brief description of the drawings]

FIG. 1 is a drawing showing a method for producing a laminated sheet of the present invention.

FIG. 2 is a view showing a method of manufacturing a conventional laminated sheet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st roll 2 2nd roll 3 3rd roll 4 4th roll 5 Base cloth layer 6 Resin layer 7 Film layer 8 Lamination sheet

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroaki Fukagawa 2-2-11, Matsuhama-cho, Fukuyama City, Hiroshima Prefecture Inside Hiroshima Kasei Co., Ltd. (72) Inventor Yoshiya Ikeda 2-2-1-11, Matsuhama-cho, Fukuyama City, Hiroshima Hiroshima Within Kasei Co., Ltd. (72) Inventor Hisaichi Matsui 2-1-1, Matsuhama-cho, Fukuyama-shi, Hiroshima F-term within Hiroshima Kasei Co., Ltd. (Reference) 4F211 AC03 AD04 AD16 AG01 AG03 TA13 TC05 TD11 TN02 TQ03

Claims (1)

[Claims] 1. A method for producing a laminated sheet by laminating a plurality of thermoplastic resin layers, wherein each layer constituting the laminated sheet is separately laminated one by one, and each layer is pressed and rolled. Sheet manufacturing method.