WO2005030019A2

WO2005030019A2 - Method for manufacturing paper cup and paper cup

Info

Publication number: WO2005030019A2
Application number: PCT/JP2004/014567
Authority: WO
Inventors: Masayuki Taniguchi; Kazutaka Makino
Original assignee: Toppan Printing Co., Ltd.; Morinaga Milk Industry Co., Ltd
Priority date: 2003-09-30
Filing date: 2004-09-28
Publication date: 2005-04-07
Also published as: JP2005104013A; WO2005030019A3; JP4404600B2

Abstract

Disclosed is a paper cup which exhibits an appropriate barrier performance without deteriorating properties of a content therein. In the bonded portion of a side wall of this paper cup, one end portion of a side wall paper sheet located inner side of the cup has such a structure wherein the end face of a paper base layer is covered with a barrier layer while preventing both end faces of the paper base layer and barrier layer from being exposed to the outside. An end portion (3) of a side wall paper sheet (2) which is at the inner side of a side wall bonded portion (4) of a paper cup has a paper base-absent portion (18) which extends from a circular bottom (10) to an upper rim (12). In the paper base-absent portion (18), a paper base layer-removed portion (19) wherein the paper base is die-cut is covered with a barrier layer (15), and a barrier layer-removed portion (20) which is located inner side of the paper base layer-removed portion (19) and wherein the barrier layer (15) is die-cut is covered with a thermoplastic resin layer (14). The end face of the end portion (3) wherein the paper base-absent portion (18) is located is so formed that a paper base layer (16) and the barrier layer (15) are not exposed to the outside, and the end face of the paper base layer-removed portion (19) in the paper base-absent portion (18) is covered with the barrier layer (15).

Description

Paper cup manufacturing method and paper cup technical field

The present invention relates to a method of manufacturing a paper cup made of a laminated sheet mainly composed of paper, and a lightness relating to the paper cup. Rice field

冃 Technology

Conventionally, paper-strength paper has been widely used to store foods and the like. Perforated body paper with the edges of the body pasted together and with the f-shaped body member with a flap, with the edge of the base paper raised 1L downward and the bottom After the material is obtained, the outer peripheral surface of the downward peripheral edge of the bottom member is brought into contact with the inner surface of the lower peripheral edge of the body member, and the lower peripheral edge of the trunk member is further inwardly covered so as to cover the peripheral portion.環状 Bend to make contact with the inner peripheral surface of the periphery of the bottom member to form an annular leg, and wrap the upper peripheral edge of the trunk member outward to form an edge

In addition, in the paper strength V-group of the self-structure, there is an unfortunate z that the contents penetrate from the edge (cut surface) of the body paper located inside the container at the body bonding part Punching out the body paper from

Lolo

The part to be punched out of the paper base material is to be located on the inward side. The edge forming part is punched in advance so that the punched part is covered, and the entire surface of the paper base material is covered with resin. the film

■■> ■ ·

Is the part to be punched out of the product sheet in the state of By forming the body member from the body paper obtained by punching out from the body, the paper base material is not exposed at the edge located on the inner side of the body at the bonding part of the body. The husband who tried to be covered with

This is proposed in the official gazette (column 3, lines 17 to 27). The above paper-strength vap, which stores food etc. at the filter, has the possibility of permeating light and oxygen from the outside into the container and deteriorating the contents. As shown in the figure, the resin film a is provided with a buffer layer b in order to provide the resin layer with a resin layer a. It was considered that the body paper d was obtained from the shell layer h h laminated on C to produce a paper strength v o

However, the surface of the bag U layer b is exposed at the inner edge of the container at the torso bonding portion e, and the components constituting the bag U are contained. Inconvenient because of the possibility of altering

There is O o

On the other hand, as shown in Fig. 8, it is also conceivable that the paper U is preliminarily laminated on the paper base material C and covered with the plastic film a to form the body paper d. However, at the body sticking part e, the paper base c is cut off by the length of the paper base c.

Therefore, in the present invention, the respective surfaces of the paper base material layer and the paper U are not exposed at the edge of the body paper placed ML inside the inside of the body sticking part U of the paper strength paper. In this case, it is assumed that the surface of the paper base material layer is to be covered with a U-shaped piece while the paper strength is high. The purpose is to provide proper barrier performance without causing deterioration of the contents. Disclosure of the invention

The present invention has been made in consideration of the above-mentioned problem, and is composed of a shell layer in which a thermoplastic resin layer and a barrier layer are laminated on a surface on the inner side of the container when the paper base layer is small. The paper is made of a moss shell and is composed of a substantially cylindrical body member having a body bonded part with the edges of the body paper being overlapped with each other and the mussel sheet. It consists of a bottom member with the peripheral edge of the bottom paper standing upright.The peripheral edge of the bottom member is joined to the inner surface of the lower peripheral portion of the body member to form an annular leg, and the upper part of the body member is formed. In manufacturing a paper roll with the peripheral edge wound outward to form a P-edge.Punching out the body paper in the part of the body paper base material to be punched. A small portion of the body paper edge forming portion is punched and removed between the body member lower peripheral portion forming portion and the body member upper peripheral portion forming portion, and the paper base material removing portion is punched. Path in the jar by overlap

U-forming base-h is laminated on the body paper sheet, and the paper base layer removal part is covered with the U-forming paper. The U-layer forming base located at the material removing section is to be punched out from the paper base layer removing section in the inner direction over the length direction of the paper base layer removing section. Is punched out and removed to form a bar U layer removal portion, and the entire surface of the bar U formation for forming the U U It is reduced by using the bar U layer removal portion. A thermoplastic resin layer is formed on the body, and a bar U consisting of a vacuum layer forming bath U and a thermoplastic resin μ are formed on the body. No paper base material is formed by punching out the part to be punched out of the sheet laminated on the paper base material sheet and covering the paper base material removal part and the barrier layer removal part with the thermoplastic resin layer. Part of the body paper is formed on one side edge of the body paper, and one edge of the body paper is formed so that the side of the body paper where the paper-substrate-free portion is located is located inside the container. A substantially cylindrical body member having a body bonding part that covers the end surface of the paper base layer removal part in the paper base non-existent part with a barrier. A method for producing a paper roll characterized by forming a paper roll is provided to solve the above-mentioned problems. In the present invention, the above-mentioned bag n is a polyethylene pipe. It is assumed that it is made of the same material as

It is possible to use a polyethylene terephthalate film or a n-π film with a vaporized material, and the above-mentioned barrier layer is made of a water-soluble resin and a layered material. It is possible to make the resin layer provided with a coating or a coating in which metal alkoxy or a hydrolyzate thereof and an isocyanate compound are aligned) into a 5-strand α-containing resin film. The above-mentioned buffer layer can be made of a foil or a foil made of an α-resin film. Another invention is a paper strength paper comprising a product in which a thermoplastic resin layer and a bag layer are laminated on a surface of the paper material which is on the inner side of the container. A substantially cylindrical shape having a torso sticking part with the edge of the body of the laminated sheet The shape of the bottom member made of the body material and the above-mentioned It sheet, with the bottom edge of the bottom member standing upright, with the perimeter of the bottom member in contact with the inner surface of the lower periphery of the bottom body member In the paper wrap which forms the legs and wraps the upper peripheral edge of the trunk member outward to form the lip, At the edge of the paper base, at least the paper base layer removal part obtained by punching out and removing the paper base between the annular leg and the CI part in the length direction of the edge is provided. The paper base non-existing portion in which the thermoplastic resin is used to cover the barrier layer removed portion obtained by punching out and removing the U U layer at the position inside the paper base material layer removed portion. End face of the edge where the paper base material non-existing portion is located. The paper in the non-exposed form where the paper base layer and the barrier layer are not exposed, and in the paper non-existing portion. Of the base material layer removal part A paper strength paper characterized in that the m-side is covered with a barrier layer, and this strength is provided to solve the above problem. □ In the above invention, It is possible that the above-mentioned bar U is made of a small amount of the raw material of the Pou-Echiren-cho, and the barrier is 4 m. :

It is possible to use a polystyrene film or a π-film film coated with 'ττ' as the layer compound.o In addition, the barrier layer is composed of a water-soluble resin and a layered material. Or a resin layer provided with a coating obtained by reacting metal alkoxide or a hydrolyzate thereof with an isocyanate can be made into a plastic film. O The above-mentioned layer forms a metal foil or metal foil. It is possible to form a multilayer film laminated on a fat film.

ADVANTAGE OF THE INVENTION According to this invention, the paper base layer in the paper base non-existence part in the inner end of the container in the trunk | body part of a paper roll

The end face with the AU was not exposed, and the surface of the paper base layer was not

Λ Because it is covered with Uva, it has excellent versatility such that the Uva performance does not decrease and the alteration of the contents can be reliably prevented.

Real

The details are as follows.

Brief Description of Drawings

FIG. 1 is an explanatory view showing an example of a paper cap according to the present invention in a partially cutaway state.

FIG. 2 is an explanatory view showing a paper base non-existent portion in one example.

FIG. 3 is an explanatory diagram showing a cross section of a torso bonding portion. FIG. 4 is an explanatory diagram showing a body paper sheet substrate in a state where a paper substrate layer removing unit is provided.

FIG. 5 is an explanatory diagram showing a state where a barrier layer removing section is provided.

FIG. 6 shows a paper base-free portion covered with a thermoplastic resin.

This is a diagram.

FIG. 7 is a perspective view showing a cross section of a torso bonding portion in a conventional example.

FIG. 8 is an explanatory view showing a cross-section of a body bonding portion in a conventional example. Best way to implement

Next, the present invention will be described in detail with reference to the embodiments shown in FIGS. 1 to 6.

In the figure, reference numeral 1 denotes a paper-strength paper, and the paper-strength paper 1 has a torso 4 to which an edge 31 of a body 2 having a predetermined shape is adhered and a torso J is attached, and is directed upward. Slightly opened, roughly cylindrical body member 5 and circular bottom paper

The lower edge of the bottom member 8 is formed on the lower inner surface of the body member 5 by bending and bending the periphery 7 of the base member 6 downward. 7 and touch the outer peripheral surface

The lower peripheral edge 9 of the body member 5 is bent inward so as to cover the inner peripheral surface 7 and is joined to the inner peripheral surface of the peripheral edge 7 of the bottom member 8, thereby forming an annular shape as a lower portion of the force pump. The leg 10 is formed, and the upper peripheral edge 11 of the body member 5 is wound outward to form the □ edge 12.

The occupation of the paper is obtained by the conventional paper-strength V-pull, and the body paper 2 and the bottom paper 6 at the above-mentioned paper-strength V-pug 1 are obtained by punching a laminated sheet 13 mainly made of paper. As shown in Fig. 3, the moss shell layer 13 has a thermoplastic resin layer 14 paper layer 15 paper base layer 16 thermoplastic resin layer 17 from the inside of the container. The paper edge layer 3 of the paper shell 1 in the paper shell 1 on the paper shell 2 is located on the inner side of the paper shell 1 in the paper shell 1. A paper base non-existent portion 18 in which both the base layer 15 and the base layer 15 are non-exposed is provided between the leg portion 10 and the □ 緣 portion 12.

In the paper base non-existent part 18 of the above

In Fig. 3, the paper base material of paper base material 16 was punched as described later. The paper base layer removing portion 19 is formed by punching and removing, and is covered with the barrier layer 15. As a result, the paper base 16 does not appear on the surface of the paper base non-existing portion 18, and the barrier layer 15 is formed inside the paper base layer removing section 19. The punched and removed part of the power layer 1 5 ■ a: A bar layer removal part 20 is formed so as not to reach the end face of the edge 3, and the part of the power layer is removed. Two

No. 0 The paper base non-existent part 18 covered with the thermoplastic resin 14 on the inner side is connected to the thermoplastic resin layer 17 on which the thermoplastic resin layer 14 on the outside is stacked. Ure layer

The side of 15 is not exposed from the side of the paper base non-existent part 18 The symbol s in the figure indicates the tangential layer, but the paper material layer removal part 19 and the bottom layer The removed portion 20 is covered with the thermoplastic resin layers 14 and 17 and the thermoplastic resin layer 1

7 is the body sticking part. □ The body sticking part 4 is formed so as to face the thermoplastic resin layer 14 on the other edge 3 of the other part 3 of the seam part 4. The components of the bag 15 do not move from the paper base non-existent part 18 to the container, and light and oxygen etc. from the outside to the surface of the paper base layer removing part 19 Even if the paper base layer removing section 19 is covered with the barrier layer 15 covering the paper base layer removing section 19, it is possible to prevent the influence from the outside world from affecting the contents.

Above platform

In the eyes, the paper base non-existent part 18 is connected to the annular leg 10 (the lower peripheral part 9 of the trunk member 5) of the rim 3 and the □ edge 12 (the upper peripheral part 1 1 of the trunk member 5). ), But the m-side surface of the paper substrate layer and the m-side of the bag Ua are paper strength, and the contents stored in Sop 1. Since it is only necessary to avoid contact with objects, the paper base non-existent portion 18 is extended to the a-edge portion 12 and the annular leg portion 10 and further over the entire length of the edge 3. Ό The paper base non-existing portion 18 may be provided. The paper roll 1 having the paper non-existing portion 18 may be provided as follows. Layers 2 and 6 are obtained from the mussels layer 14 with a layer structure of mouth J. However, in the case of the laminated sheet for the body paper 2, the following processing is performed on iu, which is layer layer h 14.

In order to obtain the body paper 2 for the paper strength V shown in the figure, the body paper 2 is first punched out. The body paper 2 is not punched out and has no outer and inner thermoplastic resin layers. Printed body paper Punching for body paper of paper base sheet 21-punching of body paper edge forming part 23 in fixed part 22 as shown in Fig. 4 Note that the outer edge forming portion 23 of the shell paper is to be formed at the portion which becomes the inner edge of the inner side of the shell bonding portion of the shell member. The parts to be punched and removed are: the annular leg forming part 24 (the part to be the lower peripheral part 9 of the torso member 5) and the Π edge forming part 25 (the torso member 5 Upper perimeter

(A part to be 11) is punched out, and a bar is formed so as to become the part to be punched 22 as soon as the paper base μ removing part 19 is mouthed. The paper base 26 is adhered to the base paper sheet 21 of the body paper by bonding to form a shell layer. The paper base removal section 19 is formed by the paper base formation sheet U 26. As the above-mentioned U-layer for forming the U-layer 26, a polyethylene film, a U-propylene film, and a vinyl film can be used. A stretched film can be used, and a polyester film with an organic compound can be used, and a film or metal film containing a water-soluble resin and a layered compound can be used. A film obtained by reacting xylene or its hydrolyzate with an isocyanate compound.a: A stretched film with a resin layer over the P layer can be used. You can also create a multilayer film with a layer on the film

In addition, as the barrier layer forming barrier layer 26, the above-mentioned material should be used and the material should be selected according to the object to be cut off. A barrier layer formed of each material is obtained. After the barrier layer for forming the barrier layer 26 is formed as a shell layer, the barrier layer for forming the barrier layer located at the paper base layer removing section 19 is formed. U-ass

26 is pierced and removed from the paper base layer removing section 19 over the length direction of the paper base layer removing section 19 to the outside of the section to be punched 22 from the inside position of the paper base layer removing section 19. Then, a barrier layer removing portion 20 is formed (see FIG. 5).

Next, the thermoplastic resin layer 14 is laminated as a polyethylene resin on the entire surface of the barrier layer forming barrier V hash-h 26 through the barrier layer removing portion 20. Also on the other side of the body sheet 21 (the side opposite to the side where the U-layer for forming the U-layer is located). Resin and A part where the paper base material is removed and the paper base removal part 19 and the base layer removal part 20 are covered with the thermoplastic resin layers 14 17 on the front and back, and the paper base non-existing part is formed. 18 is formed in the punched-out part (see Fig. 6)

Then, the scallop layer h1 3 for obtaining the body paper 2 is formed. After obtaining the body paper 2 in which the surface of the paper base layer 16 or the n-layer 17 does not appear on the side of 8, the body member is formed from the body paper and the base paper separately prepared. When the paper strength V-pull 1 is manufactured by combining the bottom member with the bottom member, the inner side edge of the body bonding portion is located between the lip portion and the annular leg portion. The paper base non-existing part is located every time.

In the above-mentioned mussels layer h1 3 for obtaining a suitable body paper 2, a paper base non-existing portion extends between the P edge forming portion and the annular leg forming portion in the body paper edge forming portion 23. However, as described above, the range of the paper-base-free portion is not limited to between the edge forming portion and the annular leg forming portion as described above. When forming a layer, the white part of the body paper edge forming part, which includes the self-P edge forming part and the annular leg part forming part, is made to be the paper base non-existent part. It is not necessary to have an outer thermoplastic resin layer for the mussels layer. <Even if only the inner thermoplastic resin layer is attached to the torso, It is necessary to prevent the above-mentioned barrier layer removal portion from being reliably exposed. Industrial applicability

As described above, the method for manufacturing a paper cup and the paper cup according to the present invention are intended to obtain a paper cup used for the purpose of accommodating the contents without deteriorating the contents. It is useful.

Claims

The scope of the claims

1. Paper paper composed of a laminated layer of thermo-plastic resin it and a layer of heat-cured resin on the inner side of the paper material layer. The outer edge of the body paper made of moss shells 1-3 A substantially cylindrical body member with a torso sticking part is superimposed on a 3rd person, and the periphery of the bottom paper made of the laminated sheet It is made of a bottom material that stands upright, and an annular leg is formed by bringing the periphery of the IJ bottom member into contact with the inner surface of the lower periphery of the body member to form an annular leg. Rolled outward □ To produce a paper roll with edge formed

Ό

胴 Punching the body paper <A small part of the body paper edge forming part in the part to be punched of the body paper sheet h of <刖> Both the body member lower peripheral part formation part and the body member upper peripheral part formation Punched and removed between the paper base layer and the paper base layer removal section

The paper for forming the paper 1 ^ is formed on the paper base sheet so as to overlap the above-mentioned scheduled punching portion, and the paper is formed on the paper for forming the paper. After removing base material layer

The U-shape U-Ut forming the U-position located in the paper base material removal part is placed in the inner direction of the paper base layer removal part over the length direction of the paper base part removal part. Punching and removing outside the portion to be punched out to form a bar layer removal portion,

A thermoplastic resin layer is formed on the entire surface of the bus for forming the bar by forming a thermoplastic resin layer so as to cover the bar-layer removal portion.

U-layer formation bar A barrier consisting of a U-shell and a thermoplastic resin layer were scraped into a body paper base sheet. A blank is formed by punching out the portion to be punched, in which the paper-base-free portion, in which the paper-base-layer-removed portion and the barrier-layer-removed portion are covered with a thermoplastic resin layer, is located on the side.

Attach the edge of the body paper so that the part of the body paper where the paper base non-existing part is located is inside the container, and put the paper base in the part where the paper base is absent. A method for manufacturing paper strength, characterized by forming a substantially cylindrical body member having a body bonding part where the m-plane of the layer removing part is covered with a barrier layer.

2 The above-mentioned varieties are made up of a small amount of material, such as polyethylene phenol, propylene glycol, and nylon D. The paper strength of claim 1 Manufacturing method

(3) The upper barrier layer is a porous film or a vinyl film on which a material is deposited.

Method of manufacturing paper roll described in 1

4 The above-mentioned barrier layer may be a film containing a water-soluble resin and a layered octane, or a resin layer provided with a film obtained by reacting a metal alkoxide or a hydrolyzate thereof with an isopropyl compound. The method for producing a paper wrap according to claim 1, wherein the reinforced paper is provided.

(5) The method for producing a paper-strength soap according to (1), wherein the barrier is a foil or a foil obtained by laminating a foil on a synthetic resin film.

6. A paper cup composed of an a-layer sheet in which a thermoplastic resin and a valley layer are formed on the inner surface of the paper layer with a small amount of <略 An approximately cylindrical body member having a body bonding part with the edges of the body paper made of the pL shell layer sheet overlapped with the edge of the base paper made of the HIJ self-laminated sheet. It consists of a bottom material raised 1L downward.A circular leg is formed by contacting the periphery of the bottom member with the inner surface of the lower periphery of the body member and winding the upper periphery of the body member outward. In the paper roll with the D edge

m The edge of the body paper, which is on the inside of the container of the body sticking part, has a small length in the length direction of the p¾ 顺 edge and a B6 span between the annular leg and the □ edge. The paper base layer removal part where the paper base material was punched and removed was covered with the U layer, and the paper layer was punched and removed inside the paper base layer removal part. The part where the paper layer is not present, where the barrier layer removed area is covered with the thermoplastic resin layer, is X

端 The end face of the edge where the paper base non-existing part is located is formed in a non-exposed state in which the paper base layer and the barrier It do not appear, and the paper base in the paper non-existent part Paper power characterized in that the surface of the material layer removal part is covered with a barrier layer

7 The above-mentioned bar layer is made of a material having a small amount of P-type polyethylene and P-pyrene resin, and the paper strength described in claim 6 can be obtained. Up

8 The paper cup according to claim 6, wherein the above-mentioned barrier layer is polished with a film or a vinyl film on which ffP organic material is deposited. .

9. The above-mentioned barrier comprises a resin layer provided with a coating containing a water-soluble resin and an isocyanate compound, or a coating obtained by reacting metal alkoxy or a hydrolyzate thereof with an isopropyl compound. The paper-strength paper according to claim 6, wherein the O-resin film is provided.

10. The paper cup according to claim 6, wherein the barrier layer is an aluminum foil or a multilayer film in which an aluminum foil is laminated on a synthetic resin film.