WO1988000163A1

WO1988000163A1 - Container lid

Info

Publication number: WO1988000163A1
Application number: PCT/JP1987/000471
Authority: WO
Inventors: Yoshimi Terajima; Hiroshi Akitoshi; Takeshi Sekiguchi; Nobuaki Nagatani
Original assignee: Toyo Seikan Kaisha, Ltd.
Priority date: 1986-07-08
Filing date: 1987-07-04
Publication date: 1988-01-14

Abstract

A container lid of the type which closes an opening of a container when it is bonded to a flange at the opening and can be torn off for opening the container when the contents are to be taken out. If the container lid is composed of a laminate layer material of plastic films or the like, it is difficult to satisfy two requirements of permitting easy opening and securely bonding the lid to the container by heat sealing. If bonding of the lid to the container is made tightly by heat sealing, the lid cannot be removed easily. In the present invention, an intermediate member is bonded to an outer member of the container lid in such a manner as to be capable of being peeled-off and an inner member is bonded to the outer member in such a manner that the inner member covers the intermediate member and is bonded to the container. With this container lid, when the outer member is pulled up, the inner member is cut along the inner edge profile of the intermediate member and the container is opened. This container lid can be bonded positively to the container and the container can be readily opened by tearing off the lid.

Description

Meteorological lid technology

The present invention relates to a container lid, and more particularly to an easily-opened container lid that can be sealed by means of a heat seal or the like into a molded container for storing food and the like.

Background art

In recent years, plastic containers and tray containers that use at least one part of plastic materials have been used as sealed containers for food and other articles. . Such containers are light in weight, have good storage properties such as bottles and bottles, and are low in cost, meet the demand for resource saving, and are easy to handle. One of the most important requirements for easy handling is easy opening. There is a great demand for containers that can be easily opened with only fingers without the need for other tools.

Conventionally, various types of such easy-opening containers have been devised, and a cap for narrowing the sealing right of a seal portion between a lid and a container to form a line seal. Protrusions are provided on the seal part of the seal, the conditions of the seal (waterfall etc.) are determined, the combination of the materials of the seal part is selected to make it peelable, etc. It has been.

-On the other hand, from the point of view of sealing performance, there is a need for a more complete product, which has a problem that it is difficult to achieve both the sealing performance and easy opening. In addition, it is desired that the easy-opening container lid is made of as little material as possible.

The present invention has been made in view of the above-described circumstances, and has a simple structure, a low impact, and can be configured with a small number of materials in consideration of sealing performance and easy opening. The aim is to provide a possible easy opening container lid.

Disclosure of the invention

The container lid according to the present invention includes an outer member, a middle member, and an inward member, which are bonded and laminated, and the peripheral portion is used as a sealing area to an opening end flange of the container to close the opening end of the container and A container lid which can be opened by tearing at a virtual tearing schedule located on the inner glue of the inner contour of the seal area, wherein the wound material covers the entire surface of the opening end flange of the container. The jungle is a strip-shaped body, and has a portion whose inner edge contour coincides with the expected tear line, and is peelably adhered to the back surface of the outer material. The inner member has a band shape, and at least a part of the inner edge contour is located inside the tear line, and the middle member is sandwiched between the outer member and the three members. It is adhered to the back of the middle garden material and the outside starfish.

In this container lid, when the outer wood is lifted, the inner wood is cut along the inner contour of the middle wood and the container is opened.

Therefore, the opening is easy, the structure is simple and the cost is low. If the mist port of the container does not need to be fully open but may be a partial opening, the intermediate material and the external material must be provided along the entire surface of the seal mound. It does not need to be, it may be a partially flaky shape corresponding to a partial opening, or a ring shape corresponding to a ring-shaped seal area even when fully open. Even if it is necessary, the annular shape can be configured as a partial flaky intermediate member or a set of flaky inner conversion members, so that the original It is possible to reduce the waste of buttering, which is the process of collecting materials, and to save the raw material.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a bottom view of a container lid according to one embodiment of the present invention, FIG. 2 is an exploded view of the container lid shown in FIG. 1, and FIG. 3 is a container lid shown in FIG. Fig. 4 (a) is a cross-sectional view of the main part showing the state before opening the container shown in Fig. 3, and Fig. 4 (a) is the opening operation of the container shown in Fig. 3. FIG. 4 (c) is a sectional view of a main part showing an opened state of the container shown in FIG. 3, and FIG. 5 (c) is a cross-sectional view of the main part showing another embodiment of the present invention. FIG. 6 is a sectional view taken along the line VI-VI of the container lid shown in FIG. 5, FIG. 6 is an exploded plan view of the container lid shown in FIG. 5, and FIG. a) is a longitudinal sectional view showing the container sealed with the container lid shown in FIG. 5, and FIG. 8 (b) is a longitudinal sectional view showing the state where the container shown in FIG. 8 (a) is opened. Explanation diagram, Fig. 9 FIG. 10 (a) is an exploded plan view of a container lid according to another embodiment of the invention relating to the above other embodiment of the invention. FIG. 10 (a) shows a container sealed with the container lid shown in FIG. Fig. 10 (b) is a longitudinal section view, Fig. 10 (b) is a half-new front view, and Fig. 11 is a view showing the state in which the container shown in Fig. 10 <a) is opened. Fig. 5 and Fig. 10 are plan views showing the manner of material selection of the intermediate member of the container lid shown in Figs. 10 and 10. Fig. 12 is an exploded plan view of the container according to still another embodiment J6 of the present invention. Fig. 13 is a plan view showing the method of material selection of the glazing member of the container lid shown in Fig. 12, and Fig. 14 is a container lid according to still another embodiment of the present invention. It is an exploded plan view.

BEST MODE FOR CARRYING OUT THE INVENTION

In order to describe this invention in more detail, this will be described below with reference to shochu drawings.

First, an embodiment in which the outer material is a composite material of a base material and an auxiliary material will be described.

In FIG. 1, 1 is a container lid. The container lid 1 is a plastic-molded container 100 with an open top end of a square with the other three apex angles rounded off except for one of the four apex angles in plan view. 3), the container is sealed in an annular sealing area 20 (indicated by a chain connection) to seal the container. As shown in FIG. 5 and inversion material 6

Outer material 2 is a composite material consisting of base material 3 and auxiliary material 4. The base material 3 has a contour 7 that can just cover the flange 101. The contour 7 goes around the outer fit along the outer edge contour 20 a of the seal area 20, but the contour part 7 a near the apex angle where the angle is not rounded is the outer contour. The pair that gives the maximum plant d of that gap is larger than the other contour part 7 b in the distance from 20 a. The portion in the vicinity of the square line 11 is integrated with the base material and forms a pinch portion 8 that forms a part of the base material 3. The knob portion 8 is a portion for pulling in the opening direction 12 which is the direction of the diagonal line 11 by holding the knob f. The auxiliary material 4 is adhered to the inner surface of the base material 3 by means of a heat seal or the like at a portion of the tab portion 8 separated from the outer edge contour 20a by a means such as a heat seal. .

The intermediate material 5 has a belt-like shape in which the two sides 9 and 10 sandwich the lip portion 8 of the four sides of the square, and the inner edge contour 5b has a scheduled tearing line 1 5 ( 1 Fig.) On the other hand, the outer edge contour 5 a is located in the garden of the contour part 7 a of the base material 3 and the outer contour 20 a in the knob part 8, and in this part, the Nakazono material 5 is auxiliary. It partially overlaps with the material 4 and becomes the overlapping part 5c, and the other part is outside! & Guo 5a almost coincides with the other contour part 7b of the base material 3. The middle lumber 5 is releasably bonded to the inner surface of the base material 3 at the remaining portion 5d of the overlapping portion 5c.

The inner material 6 has a band shape along two sides 9 and 10, and its inner edge picture section 6 b is located on the inner side of the inner edge contour 5 b of the middle garden material 5, and its outer edge 6 a Is inside the outer edge contour 5 a, and the inner material 6 is the inner edge contour 20 in the seal area 20 of the contour of the middle material 5, which is more inward than the inner edge contour 20 b. The inner surface portion 3a of the base material 3 and the inner surface portion 5f of the intermediate member 5 that are in contact with each other with e as a boundary are stuck and bonded. Accordingly, the auxiliary member 4 has an inner surface portion 4a that is not covered by the intermediate member 5 or the inner member 6, and this portion is connected to the flange 101 of the container 100. It is possible to seal, and if you defeat it, (δ)

A seal can be made in the rule area 14 to form a seal for preventing erroneous opening. However, the sealing in the sealing area 14 is not always required, and in some cases, the sealing cannot be performed depending on the material groove of the auxiliary material 4. In addition, the part 4b of the inner surface of the auxiliary material 4 that is covered with the intermediate material 5 is bonded to the outer surface of the intermediate material 5 simply because the surface of the auxiliary material 4 overlaps with the outer surface. It is especially important that there is a microscopic view of the basin 13 (see Figure 4 (a)).

The container lid 1 constructed in this way is simple in structure and easy to use. FIG. 3 shows a mound with the container lid 1 bonded to the container 100 with a heat seal. When it is folded down, it can be bonded with a heat seal to a sealing projection formed on a portion corresponding to the seal area 20 and the seal area 14 of the flange 101 of the container 100. . As a result, the container is completely sealed, and the seal in the seal area 14 prevents mistakes.

When opening this container, first, the tip of the knob 8 is grasped and pulled in the opening direction 12 to peel off the linear seal portion of the seal area 14.

Although this operation requires a certain amount of force, the force is small and sufficient due to the linear seal, and the inner seal is provided via a peelable seal portion 16. Since the unpeeled seals in the seal area 20 are connected, there is no danger that the contents will spill out due to bounce.

When the seal area 14 is peeled off, the auxiliary material 4 and the intermediate material 5 reach the overlapping portion 5c, but there is a gap 3 here, and the auxiliary material 4 and the intermediate material 5 are separated. The field material 5 is separated from the field material without any operation, and the peeling distance on the diagonal bran 11 increases at once.

When the knob 8 is further pulled, the base material 3 separates from the intermediate material 5 (FIG. 4 (b)), and when further pulled, the inner material 6 follows the inner edge contour 5b of the intermediate material 5. Thus, the container is torn and the initial opening of the container is extremely easy (Fig. 4 (c)). By further pulling, the opening smoothly expands along the inner edge contour 5b, and the opening along the planned tearing line 15 is completed.

Next, as a second embodiment, a case where the outer material 2 is configured as a single body instead of a composite material will be described.

In FIGS. 5 to 9, reference numeral 1 denotes a container lid, which is provided in a seal area 20 on the outer periphery of the upper surface of the flange 1001 of the container 100. It seals the open end of the container 100 by being adhered by a tool.

The container lid 1 is provided by bonding and laminating an outer member 2, an intermediate member 5 and an inner member 6. The outer member 2 has a substantially circular outline that can cover both the opening of the container 100 and the entire surface of the flange 10, but only one outline is described. It protrudes outwards in a small semicircular shape when the circle falls down to form a knob 56.

The intermediate member 5 is composed of two intermediate semi-annular belt-shaped intermediate members 55a, 55b arranged adjacent to each other, and the intermediate member 55a , 55b cooperate to form an annular body 66 surrounded by two peripheral circles (outer contour 58, inner contour 61). 8 is the outer rim 5 8 of the outer material 2 and the knob Matches excluding 5 6. The inner edge contour 61 is located inside the inner edge 57 of the seal area 20, and accordingly, for the intermediate material 5, the inner edge contour 61 is located more inward than the inner edge 57 of the seal area 20 described above. In this state, it is peelably adhered to the back surface of the outer measurement material 2.

The inner fii member 6 has two semi-annular inner member members 60a and 60b placed K adjacent to each other, and the inner member members 60a and 60b cooperate to form two peripheral members. An annular body 67 surrounded by a circle (outer edge contour 58, inner edge i-section 62) is formed, and the inner edge contour 62 is inside the inner edge contour 61 of the middle material 5. The inner lumber 6 has the inner edge contour 6 2 positioned more inwardly than the inner edge contour 6 1 of the middle lumber 5, and the middle lumber 5 is sandwiched between the outer lumber 2 and the intermediate lumber 5. It is strongly heat-sealed and adhered to the back of Lake 2.

The joints 68 and 71 of the adjacent parts of the middle members 55a and 55b and the inner members 60a and 60b should not be on the same straight line. Somewhat displaced.

In the above-described container lid 1 near Shirazura, the intermediate material 5 is arranged over the entire periphery of the seal area 20, but the container lid 1b shown in FIGS. 9 and 10 is not used. As described above, the middle wood is constituted by only one middle garden material member 55a, and the middle material member 55a is composed of a part of the seal area 20 and an inner part 63 of the flange 101 adjacent thereto. Place it in front of you.

In this case, the inner material member 60a also forms a semi-annular shape, and the middle material member 55a is sandwiched between the outer material 2 and the middle material member 55a by the back surface of the outer material 2a. Comprises a semi-oven lid that adheres to In addition, although the above-described embodiment has a circular container lid, the materials shown in FIGS. 12 and 14 may be stacked and bonded to form a square shape 1G, 1d. .

That is, FIG. 12 shows the outer thin member 2c, the intermediate members 55c, 55c, and the inner members 60c, 60c. The outer member 2c has an outer edge profile 58c in which the corners of the square are rounded, and only one vertex is left as a knob portion 56 without rounding the corner. The intermediate members 55c, 55c cooperate with each other, having an outer edge contour 58c as an outer peripheral edge, and having an inner edge contour 61c inside the seal area 20 and a seal area 2 It forms an annular band 66 C surrounding 0. The inner leg members 60 c, 60 C starve together and have an outer edge profile 58 c as the outer circumference, an inner edge profile 62 c located inside the inner edge profile & 1 c, and the annular body 6. An annular body covering 7c forms a belt-like body forming 7c.

The seam 68c of the two middle members 55c and the seam 71c of the two inner members 60c are bonded and bonded by matching the outer edge contour 58c. and a Ri can position Gawazu or in FIG been with us _t, middle囿material member 5 5 c is that is bonded completely covered in Uchimizuumizai member 6 0 c, or outer镅材It is also possible to construct a semi-open container h with only 2 c and one middle lumber member 55 c and one inner lumber member 60 c o

Fig. 14 shows the ring members 66d and 4d in which the outer material 2d and the four substantially rectangular medium zono members 55d and 55e are arranged in a crisscrossing manner. An annular body 67d in which two substantially rectangular inner side members 60d.60e are arranged is shown. The three are common When the outer contour 58 d is matched, the inner peripheral contour 61 1 d of the annular body 66 d is located in the inner periphery 57 of the seal area 20, and the inner contour is further increased! The inner edge of the square body 6 7 d is located inside the contour 6 2 d, and the contour body 6 2 d is located on the inside of the ring body 66 d and the ring body 67 d of the braid 7 1 d g The contact position of the contact member is off.

The container lid 1 configured in this way covers the opening of the container 100, and the container lid 1 is firmly attached to the flange 101 in the sealing area 20 by the heat seal. After bonding, the container 100 is completely sealed by the container lid 1 (see FIG. 8 (a)).

When opening the sealed container 100 in this manner, as shown in FIG. 8 (b), when the knob 56 is pulled in the direction of the arrow 12, the outer conversion material 2 becomes Peeling from the middle garden material 5. When this peeling reaches the inner edge contour 61 of the inner material 5, the inner material part inside is strongly adhered to the outer material, so that it is pulled following the outer material, and the inner material becomes the inner edge contour. The container 100 is easily opened by tearing along 6 1.

The container lid 1 is fully open, but in the case of a container lid composed of the outer member 2, the middle garden member 55a and the inner material 60a shown in FIG. 9, the middle member 55a is used. Since the inner member 60a has only a half circumference, it becomes a semi-open container lid 1b as shown in FIG.

In the container lids 1 (FIG. 7), 1 (FIG. 9) and 1G (FIG. 12), the middle pulp members 55a, 55b and 55c are semi-annular strips. From Fig. 11 and Fig. 13 As shown in Fig. 7, the protrusions are arranged in the circumferential direction 74 so that the protrusions enter the mutual recesses, and the rods 66 are directly punched. As compared with the case where the raw material 73 is used, the amount used is significantly reduced. Furthermore, since the inner lake lumber members 60a, 6Ob, and 6Oc are similar strips, the materials can be used in the same manner as Nakazono lumber. However, compared to the case where the inner material is a full circle, the absolute amount of used material and the amount of raw material can be reduced even more.

This can be said even when the container lid is configured to be opened about 13 times around the entire circumference.

Also, the middle garden material member 55a can be used in common for the full-open container lid 1 and the semi-open container lid 1b, so it differs depending on the individual container 躉. The cost can be greatly reduced as compared with the case where a material having a shape is used.

In the case of the rectangular container lid shown in FIGS. 12 and 14, the material and cost can be reduced in a circumferential manner.

Industrial applicability

As described above, according to the present invention, an easy-opening container having both sealing properties and easy opening properties, having a simple structure, being inexpensive, and capable of being composed of a small number of materials. You can get a lid.

Claims

Scope of the request. The outer material, the middle material and the inner material are bonded and laminated, and the peripheral part is sealed with the flange at the opening end of the container, and the loose part of the opening of the container is closed. And a container lid that can be opened by tearing along a virtual tear line located in the inner rim of the inner edge contour of the seal area, wherein the outer material can cover the entire surface of the opening end flange of the container. The intermediate material has a band-like shape, and has a portion whose inner edge contour coincides with the torn bran and is peelably adhered to the back surface of the everted material. The inner member is in the form of a strip, and at least a part of the inner contour is positioned inward of the expected tear line, and the middle member is sandwiched between the outer member and the outer member. A container lid characterized in that it is adhered to the back surface of the intermediate material and the outer material.

2. The base material having a contour capable of covering the opening 缙, the auxiliary material bonded to a portion of the inner surface of the base material that is separated from the outer edge contour of the seal area, and a part thereof. The center material overlaps a part of the inner surface of the auxiliary material and the remaining part is peelably adhered to the inner surface of the base material; and the inner edge of the seal area of the contour of the middle material An auxiliary member that includes an inner member astride an inner surface portion of the base material and an inner surface portion of the center material, which are adjacent to each other with a portion inwardly inward from the quail as a boundary; 2. The container lid according to claim 1, wherein the inner cover has an inner surface portion that is not covered by the middle stone or the inner stone.

3. The Nakazono material is constituted by a plurality of Nakazono material members which are arranged adjacent to each other to form a plurality of belt-like bodies which cooperate with each other to form an annular body covering the seal area. It is characterized in that the inner member is constituted by a plurality of inner member members which are arranged adjacent to each other and cooperate with an annular band. Container lid described in Paragraph 1 of the scope of patent application

4. When the intermediate members are arranged adjacent to each other, the intermediate members are formed of a plurality of belt-like members which are formed by cooperating with the annular member covering the seal area. It is composed of at least 1 fifty media members, and when the inlay materials are arranged adjacent to each other, a plurality of co-forming annular belts are formed. 2. The container lid according to claim 1, characterized in that at least one of the inwardly folded members is constituted by at least one of the inner II members.