JPH0696266B2 - Varieties identifying and displaying method for sheet-like materials and back-up pouch for transferring variety-identifying markings for sheets - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for displaying a type identification mark on the back surface of a vinyl chloride sheet or other thermoplastic sheet material, and a transfer backup roll used in this method.

[Conventional technology]

Various types of sheets such as vinyl chloride sheets and other thermoplastic synthetic resin sheet materials are manufactured according to the purpose and application, such as building ceiling sheets, vehicle ceilings, and interior sheets. There is no problem when distinguishing these types of sheet materials when using them, if they can be easily distinguished by the design and color of the surface or the material of the sheet, but with the same material, the same design and color It is not possible to visually identify such product types.

Of course, it is possible to attach a mark indicating the type of product to the edge of the sheet-like material, but it cannot be identified after the mark is removed by cutting. Therefore, conventionally, a repeating pattern such as a chevron has been printed using printing ink on the entire back surface of an embossed sheet material. According to this method, it is possible to perform identification marking of various kinds by properly using colors and patterns of printing ink.

[Problems to be solved by the invention]

Conventionally, the printing of the identification mark has been performed after embossing the calendered sheet-shaped material or prior to the embossing.However, since the embossing involves a heating process with a heater, It is difficult to continuously perform a printing process involving the use of a solvent in the same step.

For this reason, conventionally, the sheet-like material that has been calendered and wound into a roll is embossed on the front surface in the first step, once wound into a roll, and then printed on the back surface in the second step. It was common to do Of course, on the contrary, there may be a case where the back side is printed first and then the embossing process is performed, but in any case, a printing process is required separately from the embossing process, and the embossing process and the printing process are not performed. There is a drawback that productivity is lowered due to the difference in processing capacity.

An object of the present invention is to solve the above problems, and to provide a method for performing sheet embossing and at the same time performing sheet identification display, and a backup roll for embossing rolls used in this method.

[Means for solving problems]

In order to achieve the above object, in the method for identifying the type of sheet material according to the present invention, a vinyl chloride sheet or other thermoplastic synthetic resin sheet material is continuously fed between a pair of embossing roll and backup roll while heating. A method for displaying the type identification of a sheet-shaped product, in which a sheet-shaped product is pressed between both rolls to emboss the surface of the sheet-shaped product, and a type identification mark is formed on the back side of the sheet-shaped product. It is a mark that is formed by transferring the product type identification pattern of
The type of sheet material is displayed, and the type identification pattern is formed by the partial difference in the surface conditions of the uniform surface of the backup roll, and the transfer of the type identification pattern acts on the sheet material from the backup roll. This is done at the same time as embossing by utilizing the difference in force.

Further, in the backup roll for transferring the type identification marking according to the present invention, it is paired with an embossing roll for texture-imparting the surface of the sheet-like material, and by continuous rotation, it is heated as a vinyl chloride sheet or other thermoplastic synthetic resin sheet-like material. A backup roll that applies pressure to the sheet-like material during embossing while continuously feeding the product, and the backup roll has a product identification pattern, and the product identification pattern includes material, density, elastic modulus, or friction resistance. At least one of the surface conditions is partially changed to be formed on the uniform front surface of the backup roll, and the visually recognizable product type identification mark is transferred to the back surface of the sheet-shaped material. Insert.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows a step of embossing the surface of a thermoplastic sheet such as a vinyl chloride sheet so as to narrow the surface. In the figure, the calendered sheet S is sent out from the unwinding shaft 1 and heated by the heater 2, and then passes between the embossing roll 3 and the backup roll 4,
Then, it is rapidly cooled by the cooling roll 5 and wound on a winding shaft (not shown). The sheet-like material S is softened by the heating of the heater 2, and immediately after that, the embossing roll 3 is pressed to form an embossed pattern due to the unevenness of the surface of the roll 3. First
FIG. 1A shows an example of the backup roll 4 used in the present invention. The backup roll 4 is also shown in FIG.
As shown in (b), the metal roll 6 has a silicon rubber layer 7 on its surface. In the present invention, a type identification pattern for forming an identification mark on the sheet S is provided on the base of the silicon rubber layer 7. A line 8 of rubber different in material from the base, for example, EPDM (ethylene propylene rubber) is embedded, and the surface of the line 8 is made flush with the silicon rubber layer 7 of the base. Backup roll 4
Since it supports the sheet material S during embossing, its surface must not have irregularities that affect the embossed texture pattern. Silicon rubber layer 7
As long as the line 8 is embedded in a part of the surface of the backup roll 4 so that its surface faces the same surface as the silicon rubber layer 7 of the base, the surface of the backup roll 4 is uniform, and the support of the sheet-like material S is not uneven. By embossing the sheet material S by combining the backup roll 4 shown in FIGS. 1 (a) and (b) with the embossing roll 3, the back surface of the sheet material S is backed up simultaneously with the embossing of the front surface. The reaction force received by the sheet-like material S from the portion of the silicon rubber layer 7 of the backup roll 4 and the portion of the line 8 on the basis of the difference in the surface condition between the silicon rubber layer 7 of the roll 4 and the line 8 of EPDM. Different from each other, the product type identification mark 9 having a mountain-shaped continuous pattern as shown in FIG. 3 is transferred. The type identification mark 9 is not limited to the pattern shown in the figure, but in the normal case, the reaction force applied to the sheet-like material is different due to the difference in material between the base of the backup roll 4 and the line 8 for pattern formation. Therefore, it is necessary to form a product type identification pattern such that the reaction force is not locally concentrated on the uniform surface of the backup roll 4. In the present invention, "different surface conditions" includes not only differences in material density and elastic modulus but also differences in conditions such as surface roughness and frictional force. Such a difference in conditions can be obtained not only by using different materials but also by partially differentiating the surface material of the backup roll 4 by partially subjecting rubber of the same material to a surface treatment. The skin of the roll transferred to the sheet-like material S due to the difference in material can be used as a mark for a type identification mark that can be visually recognized. Further, the reason why silicone rubber is used for the base of the backup roll is that it has excellent releasability of the sheet-like material S. If you combine them to form a product identification pattern,
It is also possible to form a type identification mark that can be visually distinguished based on the peelability of both.

In any of the above cases, the backup roll identification marking pattern is transferred to the sheet S at the same time as the embossing of the surface according to the difference in surface conditions between the base of the backup roll 4 and the product type identification pattern, and the sheet S On the back surface of S, a type identification mark that is visually recognizable in appearance is formed.

〔The invention's effect〕

As described above, according to the present invention, since the identification mark is formed on the back surface of the sheet-like material at the same time as the embossing process without using the printing ink, the number of steps can be simplified, and the embossing process and the printing process can be performed as in the conventional case. This has the effect of solving the problem of productivity drop due to the difference in processing capacity between

[Brief description of drawings]

FIG. 1 (a) is a front view of a backup roll used in the present invention, (b) is a sectional view of the same, FIG. 2 is a view showing an embossing process of a sheet-like product to which the present invention is applied, and FIG. It is a figure which shows an example of the type identification mark formed by the invention. 1 ... Unwinding shaft, 2 ... Heater 3 ... Embossing roll, 4 ... Backup roll 7 ... Silicon rubber layer, 8 ... Line 9 ... Marking

Claims (2)

[Claims] 1. A vinyl chloride sheet or other thermoplastic synthetic resin sheet material is continuously heated while being fed between a pair of embossing rolls and backup rolls, and the sheet material is pressurized between both rolls to obtain the sheet material. Is a method for displaying the type identification of a sheet-like product by embossing the front surface of the product and forming the type identification mark on the back surface.The type identification mark is formed by transferring the type identification pattern of the backup roll, and is visually visible. It is a landmark
The type of sheet material is displayed, and the type identification pattern is formed by the partial difference in the surface conditions of the uniform surface of the backup roll, and the transfer of the type identification pattern acts on the sheet material from the backup roll. A method for identifying and displaying the type of a sheet material, which is performed simultaneously with embossing by utilizing the difference in force. 2. A pair of embossing rolls for embossing the surface of a sheet material, and by continuous rotation, continuously feeding a heated vinyl chloride sheet or other thermoplastic synthetic resin sheet material during embossing. A backup roll for pressurizing the sheet material, wherein the backup roll has a product identification pattern, and the product identification pattern partially satisfies at least one of surface conditions including material, density, elastic modulus or frictional resistance. Different type of tape is formed on the uniform surface of the backup roll, and the type identification mark that is visually visible on the outside is transferred to the back side of the sheet type. Backup roll.