KR20020067025A - Structure for gluing the sides of a paper vessel - Google Patents

Abstract

PURPOSE: Side sheet sticking structure for a paper container is provided to manufacture the paper container efficiently without adhesive by mounting extension protruded parts with heat. CONSTITUTION: A side sheet body is formed with rolling raw paper including a vinyl coating layer, and a curling part is formed with rolling the side sheet body. A paper container is manufactured with inserting base paper and with mounting by folding the lower part of the side sheet body. Virtual curling part and base paper lines(12,13) are formed, and virtual bending lines(10) are formed at both ends of a body part(8). Extension protruded parts(9) are formed out of bending lines, and the cylindrical body is formed with rolling the body part to contact bending lines. Extension protruded parts are folded, and mounted by thermally bonding in facing vinyl coating layers to each other. The paper container is manufactured conveniently without adhesive.

Description

Structure for gluing the sides of a paper vessel

The present invention relates to a side attachment structure of a paper container such as a disposable paper cup or disposable ramen container made by rolling a paper base material with a vinyl coating layer formed on the inner surface, and more specifically, both ends of the main body portion which can form a cylindrical shape by rolling a paper base round. By forming the protruding portion to protrude outwards, the main body is rolled round to form a cylindrical shape while the vinyl coating layer faces inwardly, and the protruding portions of both ends of the main body portion which are in contact with each other are turned round so that the vinyl coating layers on both sides of the inner surface are in contact with each other. It is to fold outward in the form to attach the both sides of the vinyl coating layer by heat bonding so that the side can be attached without using an adhesive.

A typical conventional paper container is a paper base side (5) formed with a vinyl coating layer (11) formed on the inner surface of the paper (11a) as shown in Fig. 1 (a) (b) is rolled up and down the side of the paper body (1) The curling part 2 is formed by rolling the upper part of the side body 1 to the outside, and the side body main body in the state where the outer periphery bent downward is inserted into the lower side of the side body 1. By folding the lower end of (1) inward, a paper container 4 such as a disposable paper cup or a disposable ramen container is produced.

The side paper 5 of the paper container 4 is overlapped at both ends as shown in (b) of FIG. 1, and the overlapped portion is attached by the adhesive 16. The paper container 4 thus prepared is provided with coffee or ramen soup, When a long time elapses because a liquid such as a beverage is contained, the liquid leaks from the end of the paper 11a located inside the paper container 4 and leaks out to the outside of the paper container 4 as an arrow. Will occur.

And attaching the side of the paper container turns the edges of the sides of the paper, apply adhesive to the scared area, and then glues the overlapped areas.The adhesive has a property of solidifying with time, so the adhesive is applied to the side of the paper container. Since the adhesive partially coagulates on the painted part and the adhesive cannot be applied evenly on the side, the problem of leakage of liquid after the completion of manufacturing occurs, and the problem of the adhesive area caused by the use of the adhesive is difficult to clean, After stopping the operation of the machine due to the end of the working hours in the production plant had a number of problems, such as the glue can harden the contact portion, causing problems in the next operation.

In order to solve the above problems, after the sides are overlapped and attached, the both ends of the sides protrude outwardly to form an extension protrusion, and then the extension protrusions are folded outwards, and the vinyl coating layers on both sides of the inner side face each other. The technical task is to allow the side of the paper container to be bonded to each other in a butted state so that the vinyl coating layers can be attached while melting together without using an adhesive.

In order to achieve the above object, the present invention forms a side paper body by rolling the paper paper side paper with a vinyl coating layer formed on its inner surface, and forms a curling part by rolling the upper side of the side paper body to the outside, and the outside inside the bottom body of the side paper body. In a paper container such as a disposable paper cup or a disposable ramen container, which is manufactured by folding a lower edge of the side body inward while inserting a base bent downward, the side paper forming the side body is curled in an unfolded state. The curling preliminary part to form a part, the main body part to be the side body, and the bottom holding part to attach the base, and then each of the boundary line to form a curling part boundary line and the bottom boundary virtually, and both ends of the curling preliminary part and Both ends of the main body that connects both ends of the bottom holding part up and down are virtually bent boundary lines on the same line. The outer side of the bent boundary line of the main body portion is formed so that both ends extend the extension protrusions with the same width to each other, the main body portion is rolled round so that both sides of the bending boundary line to form a cylindrical side main body, Fold both extension protrusions to the outside on the basis of the bent boundary line that is the boundary between the outer and the extension protrusions, and the two inner surfaces of the two inner protrusions are attached to each other by heat bonding.

In another embodiment, an incision is formed by cutting a curling part boundary line at one end of the curling preliminary part, and an overlapping part that is overlapped and attached to the curling preliminary part of the other side is formed at the outer end of the curling preliminary part above the incision. An incision is formed by cutting the bottom boundary line of one side of the holding part, and an overlapping part overlapping and attached to the bottom holding part of the other side is formed at the outer end of the bottom holding part above the incision part.

Figure 1 (a) (b) is a side cross-sectional view showing a structure of a conventional general paper container is a flat cross-sectional view attached to the side.

Figure 2 is a development of the side view showing an embodiment of the present invention.

Figure 3 is an exploded view of the side limp showing another embodiment of the present invention.

Figure 4 is a side cross-sectional view showing a side rolled-up state of the other embodiment shown in FIG.

5A is a cross-sectional view taken along the line A-A and C-C of FIG. 4, and (B) is a cross-sectional view taken along the line B-B of FIG.

6 (a) and 6 (b) are enlarged partial sectional views taken from portions “a” and “b” of FIG. 4.

<Explanation of symbols for main parts of drawing>

1: side body 2: curling unit 3: base

4: paper container 5: side sheet 6: curling

7: Base holding part 8: Main body part 9: Extension protrusion part

10: bending boundary line 11: vinyl coating layer 12: curling boundary line

13: base boundary line 14: incision 15: overlap

16: glue

Hereinafter, the side attachment structure of the paper container according to the present invention will be described with reference to the accompanying drawings, FIGS. 2 to 6.

Figure 2 is an exploded view of the side surface showing an embodiment of the present invention, Figure 3 is a development view of the side surface showing another embodiment of the present invention, Figure 4 is a side of the other embodiment shown in Figure 3 is rolled attached It is a side cross-sectional view which shows. 5A is a cross-sectional view taken along the line AA and CC of FIG. 4, (B) is a cross-sectional view taken along the line BB of FIG. 4, and FIG. 6A is a “b” and “b” shown in FIG. 4. A partial sectional view showing an enlarged view of ".

First, in one embodiment of the present invention shown in Figure 2 is formed on the inner surface of the paper base side paper (5) with a vinyl coating layer (11) is rolled up to form a side edge body (1), the upper side of the side body (1) Curl to the outside to form a curling part 2, and the bottom of the side body (1) is folded inward in the state of inserting the base (3) whose outer periphery is bent downward into the bottom inside of the side body (1) In the paper container 4 such as a disposable paper cup or disposable ramen container, the side paper 5 forming the side paper body 1 is a curling preliminary part 6 which will form the curling part 2 in a deployed state. ), The main body 8 to be the side body 1, and the base holding portion 7 for attaching the base 3, and then the curling portion boundary line 12 and the base boundary line 13 at each boundary line. ) Are formed virtually, respectively, and the main body part 8 which connects both ends of the curling preliminary part 6 and both ends of the base holding part 7 up and down. Both ends of the) form a virtual bending boundary line 10 on the same straight line with each other.

In addition, both ends of the main body part 8 are formed to extend the extension protrusions 9 at both ends of the same width, and the main body part 8 is formed so that both sides of the bending boundary line 10 abut. It is rolled up to form a cylindrical side main body 1, and the two extension protrusions 9 are folded outwardly on the basis of the bending boundary line 10, which is the boundary between the outer side of the main body 8 and the extended protrusion 9. The vinyl coating layers 11 on both inner surfaces thereof are attached by thermal bonding in contact with each other.

Reference numeral 7a in the reference numerals denotes a folding boundary line that is bent while wrapping the bent portion of the base 3.

In another embodiment of the present invention shown in FIG. 3, the extension protrusions 9 are formed to extend on both sides of the body portion 8 in one embodiment, and the extension protrusions 9 are bent outward to the inner side of the vinyl coating layer. (11) The heat-bonding between the same is the same, only difference is that the curling preliminary 6 and the bottom holding portion 7 is added to the overlap so that later attached.

That is, another embodiment of the present invention cuts the curling section boundary line 12 at one end of the curling preliminary section 6 to form the cutout 14, and the curling preliminary section 6 outside the cutout 14 is formed outside. At the end, an overlapping portion 15 overlapping with and attached to the curling preliminary portion 6 on the other side is formed, and an incision portion 14a is formed by cutting the base boundary line 13 at one end of the bottom holding portion 7. At the outer end of the lower holding portion 7 on the upper side of the cutout portion 14a, an overlapping portion 15a is formed, which is overlapped and attached to the lower lower holding portion 7 on the other side.

Fig. 4 is a side cross-sectional view showing a state in which the side edges 5 having the extension protrusions 9 formed are rolled up and attached to the upper and lower narrowing forms, and in one embodiment, the upper curling preliminary section 6 has a lower bottom holding portion 7. ) Do not overlap, but in this embodiment, the curling preliminary section 6 and the bottom holding section 7 are overlapped and attached. Accordingly, the cross-sectional view taken along line BB of FIG. 4 is the same as in one embodiment and the other embodiments, so that the body portion 8 is rounded to form a cylindrical shape of the upper and lower straits, and the extension protrusions 9 have the vinyl coating layers 11 on both inner surfaces thereof. Heat bonded.

5A is a cross-sectional view taken along line AA and CC of FIG. 4 to show a state in which the curling preliminary section 6 and the bottom holding section 7 overlap and are attached. FIG. 6A is a paper 11a. 6 shows that the vinyl coating layer 11 is formed on the inner surface, and (b) of FIG. 6 indicates that the overlapping portion 15 overlaps the other end of the curling preliminary section 6 and is attached as the adhesive 16. The vinyl coating layer 11 was formed in the inner surface of the paper base material.

Referring to Figures 2 to 6 the working relationship of the present invention configured as described above is as follows.

The present invention rolls the side edge (5) to create a cylindrical tapered in the upper and lower narrowing, in the case of the embodiment shown in Figure 2 in the case of the two bending boundary line (10) rolled round so as to contact the two bending boundary line (10) ) Is bent to the outside, and both ends of the extension protrusions (9) is such that the vinyl coating layer 11 on both sides of the inner surface facing each other, as shown in (b) of Fig. 5, the heater is pressed against the outside of the two extension protrusions (9) by pressing holes. In this case, the vinyl of the vinyl lotion layer 11 coated on the inner surfaces of both side extension protrusions 9 is melted and bonded.

In this manner, after the two ends of the extension protrusions 9 are thermally bonded, the upper curling preliminary section 6 and the lower bottom holding section 7 are straightened in a straight line, and the respective curling preliminary sections 6 and the bottom holding section are straight. Both ends of the end portion 7 are in contact with each other, and the curling preliminary portion 6 is rolled outward to form the curling portion 2 as shown in FIG. 1, and the bottom holding portion 7 has a bottom bent with an outer circumference bent downward ( 3) bent in the inserted state and the base (3) can be attached to form a paper container (4).

Since this embodiment is not bent in the overlapping state of the both ends of the base holding portion 7 there is a risk of leakage when containing liquid, so it will be suitable for holding various foods such as potatoes, cookies, fried foods and the like.

Next, in the case of another embodiment in which the overlapping portion 15 is formed, the main body 8 is rolled round so that the bending boundary line 10 abuts while bending both sides of the bending boundary line 10 to the outside as in one embodiment. Thermal bonding is carried out in the state that (9) abuts. In this case, the vinyl coating layers 11 on both inner surfaces of the extension protrusions 9 are in contact with each other, and the vinyl layers are attached while melting by thermal bonding, as in the exemplary embodiment.

When both ends of the extension protrusions 9 are thermally bonded as described above, the overlapping portion 15 of the curling preliminary portion 6 and the overlapping portion 15a of the base holding portion 7 are multi-sided curling preliminary portion 6. And overlap each of the base holding portion 7, as shown in (a) of Figure 5 and (b) of Figure 6 (b) by applying an adhesive 16 to the outer side of the paper (11a) located in the overlapping portion ( The vinyl coating layer 11 on the side of 15 and 15a is attached to each other, so that both sides of the extension protrusions 9 are bonded to the vinyl coating layer 11 on both sides by heat bonding, and the upper curling pretreatment 6 on the upper side and the lower side The bottom holding portion 7 is attached to the inner vinyl coating layer 11 of each of the overlapping portions 15 and 15a by an adhesive 16 on the outer side of the paper 11a of the curling pretreatment 6 and 17 on the other side. Will be.

After the central body 8 and the upper and lower curling preliminary parts 6 and the bottom holding part 7 are attached to each other to form a tapered tube shape, the upper curling preliminary part 6 is rolled outward and curled. (2) is formed, and the lower base holding part 7 completes the attachment of the base 3 while folding the folding boundary line 7a in the state where the base 3 is inserted, thereby manufacturing the paper container 4. Will be done.

In the case of this other embodiment, since the curling preliminary section 6 and the bottom holding portion 7 is formed in the overlapping state of the paper container, there is no part to leak the liquid, so it is suitable for use as a container in which the liquid is contained.

In the present invention, when the lengths of the extended protrusions 9 which are thermally bonded to each other are extended to be thermally bonded, the part may serve as a handle, and the vinyl coating layer 11 is inward when the paper base is rolled up. It is natural to face, it is described as winding the paper base in the form of a cylindrical or tapered tube, this is to explain that it is possible to manufacture a paper container in the form of a cylindrical or tapered tube.

As described above, the side attachment structure of the paper container of the present invention is formed by protruding the extension protrusions at both ends of the main body portion of the paper base material with a vinyl coating layer formed on the inner side thereof, and then rolling the main body portion in a state in which the vinyl coating layer faces inwardly. By forming a cylindrical shape and heat-gluing the extension protrusion where the vinyl coating layer is in contact with each other, it is a paper base material with a vinyl coating layer formed on the inner surface. It is a very useful effect.

Claims (2)

A paper base with a vinyl coating layer formed on its inner surface is rolled up to form a side body, and a curling part is formed by rolling the upper side of the side body to the outside, and a base with an outer periphery bent into the bottom side of the side body is inserted. In a paper container such as a disposable paper cup or disposable ramen container manufactured by folding the lower end of the side body inward in a state, The side edge 5 forming the side body 1 has a curling preliminary portion 6 to form the curling portion 2 in a deployed state, a main body 8 to be the side body 1, and a base ( 3) After dividing into the bottom holding portion (7) to attach to each of the boundary line to form a curling portion boundary line 12 and the bottom boundary line virtually respectively, and both ends and the base of the curling preliminary section (6) Both ends of the main body portion 8 which connects both ends of the holding portion 7 up and down form a virtual bending boundary line 10 on the same line as each other, On both sides of the bending boundary line 10 at both ends of the main body 8, the both ends are formed to extend the extension protrusions 9 with the same width. The main body portion 8 is rolled round so that both side boundary lines 10 abut to form a cylindrical side main body 1, and a bending boundary line which is a boundary between the outer side of the main body portion 8 and the extension protrusions 9. The side attachment structure of the paper container, characterized in that the two sides extending projections (9) on the basis of the outer side and the vinyl coating layer (11) on both sides of the inner surface is attached by thermal bonding in contact with each other. The method of claim 1, wherein the curling section boundary line 12 of one end of the curling preliminary section 6 is cut to form an incision 14, and an outer end of the curling preliminary section 6 above the cutout 14 is formed. The overlapping portion 15 which is overlapped and attached to the curling preliminary section 6 on the other side is formed, The bottom holding portion 7 cuts the bottom boundary line 13 at one end to form a cutout portion 14a, and the bottom holding portion 7 at the outer end of the bottom holding portion 7 above the cutout portion 14a ( 7) the side attachment structure of the paper container, characterized in that the overlapping portion (15a) is formed to be superimposed on.