JPH0449030A - Manufacture of laminated sheet for inner seal material - Google Patents

Abstract

PURPOSE:To print a seal layer within a specified range when the seal layer is cut into inner seal materials for sealing separate vessel mouth section by printing a register for cutting the seal layer into discrete inner seal material to the rear of a sheet for the seal layer by utilizing a register printed on the lug section of the sheet of the seal layer. CONSTITUTION:A register (n) for reverse printing is formed to a lug section composed of the two layer constitution of glassine paper 2 and an ethylene resin layer 4 in a laminate 5. Consequently, the register can be viewed sufficiently from the rear of the laminate 5. A releasable resin layer 6 consisting of a coat layer by cellulose nitrate having releasability to a polyethylene resin layer is formed on the surfaces of printed pattern layers ma-ml, the resin layer 6 is turned over by utilizing a turn bar, a register (l) for cutting the whole into separate inner seal material is printed in-line on the whole surface of glassine paper 2 by using the register (n) for reverse printing, and a sheet 7 for a seal layer, on the rear of which the register (l) for cutting is printed, is obtained.

Description

Detailed Description of the Invention "Field of Industrial Application" The present invention relates to an inner sealing material for sealing the mouth of a container filled with, for example, coffee powder, cream powder, flavored salt, chemical seasonings, etc. The present invention relates to a method for manufacturing a laminated sheet for an inner seal material, that is, a laminated sheet for an inner seal material.

``Prior art'' For example, an inner sealing material is attached to the mouth of a glass-filled container filled with coffee powder, cream powder, etc. to protect the contents from moisture. It is being

The inner seal material is plate-shaped and has a laminated structure of a reseal layer mainly made of paperboard or breast plug balls, and a seal layer whose moisture-proofing function is provided by a metal foil such as A2 foil. The process includes the step of locking the inner sealing material on the inside of the back surface of the cap, and the step of fitting the cap with the inner sealing material locked on the inside of the back surface to the container mouth, and then attaching the back surface of the inner sealing material to the container mouth. It is fixed to the container opening by a step of adhering it to the container.

In the inner sealing material adhered to the container opening as described above, the metal foil such as A2 foil present in the sealing layer has a moisture-proofing effect on the contents inside the container.
By removing the cap fitted to the container mouth, the reseal layer and the seal layer are separated, and only the seal layer remains adhered to the container mouth.

For example, as illustrated in FIGS. 2 and 3, a surface layer 21 made of paperboard and a back layer 22 made of polyolefin resin.
and a reseal layer 2 formed by laminating them with a wax layer 23 interposed therebetween.
In the inner sealing material 27 for sealing the container mouth, the inner sealing material 27 is made of a laminated sheet of a sealing layer 26 having a peelable resin layer 25 having pattern properties as a surface layer with respect to the back layer 22 of the resealing layer 24. The cap is adhered to the container opening 29 so that the glassine paper 28 forming the back layer of the sealing layer 26 faces the filling inside the container, and is fitted to the container opening 29. By the operation of removing 30, the back surface of the reseal layer 24 and the surface of the seal layer 26 are separated, and the peelable resin layer 25, the metal foil 31 such as AI2 foil, and the glassine paper 28 forming the back layer are separated. A sealing layer 26 remains on the container opening 29.

On the other hand, the reseal layer 24 remains locked to the back surface of the cap 30, and even after the seal layer 26 is peeled off from the container opening 29 when taking out the contents, the reseal layer 24 still acts as a backing for the cap. and seal the contents inside the container.

"Problems to be Solved by the Invention" In the container with the inner seal material, when the cap 30 is removed from the container opening 29, the reseal layer 2
4 is separated from the sealing layer 26 together with the cap 30, and the sealing layer 26 remains fixed to the container opening 29, and usually a printed layer attached to the surface of the metal foil 31, for example, λ,
Trademark 1 name of the filling inside the container.

A printed layer indicating the manufacturer, handling instructions, etc. is visible to the consumer through the peelable resin layer 25.

By the way, in the laminated sheet for inner seal material,
The product name and manufacturer attached to the seal layer 26,
Printed information such as handling instructions can be printed on the reseal layer 24, which is mainly made of paperboard and hole plug balls. ! covered,
These printed layers cover the inner seal material with the reseal layer 24.
It can be visually recognized from the outside only when it is separated into the seal layer 26 and the seal layer 26.

The printed layer attached to the sealing layer 26 is obtained by cutting a laminated sheet for inner sealing material.

When the inner seal material for sealing the container mouth 5 is punched out, the seal is made so that a certain printed layer such as a gap can be exposed even if the position of the punch line is not specified. An endless pattern is formed on the layer sheet as a repeating pattern of small pitches.

For this reason, in each cut inner seal material, various kinds of information are interrupted and appear unsightly.

On the other hand, in the method of manufacturing a laminated sheet for inner sealing material of the present invention, when cut into individual inner sealing materials for sealing the mouth of a container, the sealing layer is printed within a predetermined range. Provided is a method for producing a laminated sheet for an inner sealing material, which yields an inner sealing material.

"Means for Solving the Problems" The method for manufacturing a laminated sheet for inner sealing material of the present invention includes:
Reseal layer sheets mainly made of paperboard and hole plug balls,
A method for producing a laminated sheet for an inner seal material, wherein the sheet for the seal layer is laminated such that the back surface of the sheet for the reseal layer and the surface of the sheet for the seal layer are in contact with each other, and the inner seal material and the seal layer are laminated. When applying the printing pattern that appears on the sealing layer side when separated into the sealing layer and the sealing layer, register marks for printing on the backside that can be seen through the backside of the sealing layer sheet are printed on the edges, and then, A process is adopted in which cutting register marks for cutting into individual inner sealing materials are printed on the back side of the sealing layer sheet using register marks printed on the edges of the sealing layer sheet. It is something.

In the method for manufacturing a laminated sheet for inner seal material of the present invention having the above structure, the printed pattern that appears on the seal layer side when the inner seal material is separated into the reseal layer and the seal layer is different from the laminated sheet for inner seal material. When the sheet is cut into individual inner sealing materials, the printed portion appearing on the sealing layer of a single inner sealing material is one block, and the pitch pattern is It consists of a repeating pattern for each circumference of the printing plate used during printing.

When applying the above-mentioned pitch pattern printing pattern, the register marks for back side printing applied to the edges of the sheet can be seen through from the back side of the seal layer sheet, and in the subsequent process, Corresponding to the register marks for printing on the back side, register marks for cutting are attached to the back side of the seal layer sheet, and further, the laminated sheet for inner seal material is cut according to the register marks for cutting. , an inner sealing material for sealing the mouth of a container is obtained in which a printed pattern layer of one pitch within a predetermined range is located at a predetermined position of the sealing layer.

"Example" The specific structure of the method for manufacturing a laminated sheet for inner seal material of the present invention will be described below based on Examples.

Example 1 In FIG. 1(a), after applying an anchor coating agent to the surface of glassine paper 2 with a basis weight of 30.5 g/m'',
A 42m3 piece of A42m3 μ and the Granon paper 2 were adhered to each other with a molten polyethylene resin layer 4 having a thickness of 20μ interposed therebetween to obtain a laminate designated by reference numeral 5.

In addition, in the pasting process of the laminate 5, a foil 3 whose width is 3 On+m shorter than the width of the glassine paper 2 is used, and the central part of the glassine paper 2 in the width direction is Place the glassine paper 2 and Aβ so that the Af2 foil 3 is located at
By pasting the foil 3, the left and right ears (width 15
mml each has a two-layer structure of glassine paper 2 and a polyethylene resin layer 4 with a thickness of 20 μm, and the other parts are laminated with a three-layer structure of glassine paper 2, A42m3, and polyethylene resin layer 4. Obtained body 5.

Next, in FIG. 1(b), on the surface of the obtained laminate 5 (1! surface of the foil 3), a printed pattern layer ma is applied in one unit in a circle with a diameter of 7 cm.

mb, me, md, me, mf,
mg.

mh, mj, mk, mjl! , mn, and print 12 repeated printing pattern layers at a pitch of 8 cm vertically and horizontally. On the surface of layer 4, register marks n, n, .

Note that the register marks n, n, etc. for back side printing are attached to the edges of the laminate 5 which are made up of two layers, the glassine paper 2 and the polyethylene resin layer 4, so that the laminate 5
You can see through the back side of the image.

Further, on the surface of the printed pattern layer ma=m42, a thickness of 2 nitride cotton having mold releasability with respect to the polyethylene resin layer is applied.
After forming the releasable resin layer 6 consisting of a coating layer of μ, it is reversed using a turn bar, and then a register mark for cutting is placed on the entire surface of the two sides of the glassine paper for cutting into individual inner sealing materials. ρ, 9. . . . is printed inline using the register marks n, n, .

A seal layer sheet 7 was obtained in which β... was printed on the back side.

Continuing further, the surface of the sealing layer sheet 7, that is,
An extrusion coat layer 8 of polyethylene resin with a thickness of 20 μm is laminated on the surface of the peelable resin layer 6, and further on the top surface,
By laminating hole plug poles 9 with a basis weight of 630 g/m" using hot melt adhesive (20 g/m") 10, an inner sealing material shown by the symbol l in FIG. 1(a) is obtained. A laminated sheet for use was obtained.

The obtained laminated sheet 1 for inner sealing material was cut into a rectangular plate-shaped body of 8 cil in length and width according to the cutting mark marked on the glassine paper 2 forming the back layer of the sheet 1, and then , by punching out a disk with a diameter of 7.5 cm with the center point at the center of the rectangular plate,
An inner sealing material for sealing the mouth of a container was obtained in which one printed pattern layer among m a - m n was recorded in the disk.

The above example process is used when obtaining an inner seal material consisting of a wide variety of products in small lots, that is, when the inner seal material is separated into a reseal layer and a seal layer, the inner seal material appears on the seal layer side. The printed pattern to be printed is m a - m
Although the printed pattern is made up of 12 types of repeats of I2, it goes without saying that all of the printed patterns of ma-mg may be the same pattern.

"Actions and Effects of the Invention" The method for producing a laminated sheet for inner seal material of the present invention includes:
Reseal layer sheets mainly made of paperboard and hole plug balls,
This is a method for obtaining a laminated material in which the sealing layer sheet is laminated such that the back surface of the resealing layer sheet and the surface of the sealing layer sheet are in contact with each other, and the inner sealing material is bonded to the resealing layer and the sealing layer. Along with the printing of the printed pattern that appears on the seal layer side when separated, the seal layer seal!・
Register marks for printing on the back side that can be seen through the back side of the sealing layer sheet are printed on the edges of the sealing layer sheet, and then a cutting mark for cutting into individual inner sealing materials is printed on the back side of the sealing layer sheet. The registration marks are printed using the registration marks printed on the ears of the seal layer sheet.

The laminated sheet for inner sealing material obtained by the method of the present invention is cut and punched into individual inner sealing materials for sealing the mouth of a container according to the cutting registration marks attached to the back side of the laminated sheet. The individual inner sealing materials for sealing the container mouth, which are punched out, are engaged with the cap and adhered to the container mouth, thereby maintaining the moisture-proof property within the container.

When the cap is removed from the container to which the inner seal material for sealing the container mouth is fixed, only the reseal layer of the inner seal material is removed together with the cap,
The sealing layer remains affixed to the container mouth.

At this time, in the inner sealing material obtained by the method of the present invention, a predetermined printed pattern layer printed in one unit appears on the upper surface of the sealing layer, so that various information etc. are interrupted midway. For example, because there is no situation and a neat impression is given to the consumer.
It gives an impression of a clean state suitable for containers for food and beverages such as coffee powder and cream powder.

[Brief explanation of drawings]

FIG. 1(a) is a sectional view showing an example of a laminated sheet obtained by the method for producing a laminated sheet for inner sealing material of the present invention, and FIG. 1(b) is a cross-sectional view showing an example of the laminated sheet for inner sealing material of the present invention. FIG. 1(C) is a plan view illustrating the printed pattern layer attached to the surface of the laminate obtained in the middle step of the sheet manufacturing method and the register marks for printing on the back surface, and FIG. 1(C) shows the inner sealing material of the present invention. FIG. 2 is a plan view illustrating the cutting register mark attached to the back side of the laminate obtained in the middle of the manufacturing method of the laminate sheet for the purpose of manufacturing. The sectional view shown in FIG. 3 is a model sectional view showing a separated state of the inner sealing material when the cap is removed from the container to which the inner sealing material shown in the second section is adhered. ■ Laminated sheet for inner seal material, 2 Glassine paper forming the back layer of the seal layer sheet 7, 3 Metal foil, 6... Peelable resin layer forming the surface layer of the seal layer sheet 7, 7 ... Seal layer sheet, 9 ... Hole plug ball, 1 unit of printed pattern layer that appears on the seal layer side when the inner seal material is separated into the reseal layer and the seal layer, for back side printing register mark, ε register mark for cutting. Figure 1 (0) Figure 1 (b) Figure 1 (c)

Claims (1)

[Claims] 1. An inner layer in which a reseal layer sheet mainly made of paperboard or breast plug balls and a seal layer sheet are laminated such that the back surface of the reseal layer sheet and the surface of the seal layer sheet are in contact with each other. In a method for manufacturing a laminated sheet for sealing material, a printing pattern that appears on the sealing layer side when the inner sealing material is separated into a resealing layer and a sealing layer is printed, and the pattern can be seen through from the back side of the sealing layer sheet. Register marks for back side printing are printed on the edges of the seal layer sheet, and then cutting register marks for cutting into individual inner seal materials are printed on the back side of the seal layer sheet on the seal. A method for producing a laminated sheet for inner sealing material, characterized in that printing is performed using register marks printed on the edges of the layer sheet.