TWI671244B - Food can - Google Patents

Abstract

The invention relates to a food can, comprising a can body punched from a coated metal sheet and a can lid punched from a coated metal sheet. The can body includes a can body provided with an opening and is arranged around the can body. The first annular adhesive portion on the open edge, the can lid is provided with a second annular adhesive portion corresponding to the first annular adhesive portion, and the first annular adhesive portion and the An annular welding member is provided between the second annular adhesive portions, and the first annular adhesive portion is tightly fitted with the second annular adhesive portion through the annular welding member. The sealing of the food can only needs to use a ring-shaped welding member to seal and fix the can body and the can lid, which is convenient to operate and greatly reduces the production cost of the metal food can. At the same time, it is easy to open and does not cut the operator's hand.

Description

Food can

The invention relates to the technical field of food cans, in particular to a food can.

At present, metal food cans, whether two-piece cans or three-piece cans, are sealed by double crimping, which can increase the strength of the can body and ensure that the contents are not subject to secondary pollution. However, the use of double crimping for sealing also has the following disadvantages: it requires a complex and high-precision sealing machine, which is affected by many factors such as the thickness of the iron sheet, hardness, the height of the roller, the pressure of the bottom of the support and the groove shape of the roller Only a skilled operator can adjust the seal. The failure rate during canning production is high, and the machine must be adjusted from time to time. The sealed can is difficult to open, and it is easy to cut the operator's hand during the process of opening the seal. .

Based on this, it is necessary to provide a food can, which can reduce the failure rate and reduce the cost of the canned production process, and can conveniently and safely open the food can.

The technical solution is as follows: a food can, comprising a can body punched from a coated metal sheet and a can lid punched from a coated metal sheet, the can body includes an open can body and A first annular adhesive portion is provided around the edge of the opening, and the can lid is provided with a second annular adhesive portion corresponding to the first annular adhesive portion. An annular welding member is provided between the adhesive portion and the second annular adhesive portion, and the first annular adhesive portion is tightly fitted with the second annular adhesive portion through the annular welding member.

When the food can is used for packaging food, the food to be sealed is placed in the can body of the can body, and then the can lid is covered, and the first annular adhesive portion or the second annular adhesive portion is heated by using a preset pressure. The first ring-shaped adhesive portion of the can body is sealed and fixed with the second ring-shaped adhesive portion of the can lid through the ring-shaped welding member, so that the food can be sealed and stored in the food can; at the same time, the surface of the can body is covered with a film , Can avoid food contact with the metal of the can body, avoid corrosion and damage to the can body, waste food; when you need to remove the stored food, you only need to cut the ring-shaped weldment to separate the lid from the can body, and you can take out the food from the open This process does not produce sharp edges, which effectively avoids cutting the operator's hand. The sealing of the above food cans can only use a ring-shaped welding piece to seal and fix the can body and the can lid, which is easy to operate, greatly reduces the production failure rate of the canning line, and reduces costs; meanwhile, it can be opened using a simple can opener Will not cut the operator's hand.

The technical solution is further described below: In one embodiment, the first ring-shaped adhesive portion includes a first ring-shaped transition body fixedly docked with the tank body, and a first ring-shaped transition body. A butt-fixed first mating body, the second ring-shaped adhesive portion includes a second ring-shaped transition body sleeved and mated with the first ring-shaped transition body, and a second mating body docked with the second ring-shaped transition body The ring-shaped welding member is disposed between the first mating body and the second mating body.

In one embodiment, the outer wall of the first annular transition is spaced from the outer wall of the tank body to form an annular boss.

In one embodiment, when the tank body is fixed at a preset position, the first mating body and the second mating body are both horizontally disposed.

In one embodiment, an outer wall of the first annular transition body is pressed against an inner wall of the second annular transition body.

In one embodiment, the first ring-shaped transition body and the first mating body are smoothly connected and fixed, and the second ring-shaped transition body and the second mating body are smoothly connected and fixed.

In one embodiment, the tank cover is provided with a cover body concavely formed outward, and a yield groove is provided between the cover body and the second annular transition body.

In one embodiment, a first anti-scratch part is provided on an outer edge of the first mating body, and a second anti-scratch part is provided on an outer edge of the second mating body.

In one embodiment, the first anti-scratch part is curled inward in a direction close to the first side part and has a ring-shaped protrusion shape, and the second anti-scratch part is away from the first side part It curls outward in the direction of the ring, and has a ring-shaped convex shape.

In one embodiment, the ring-shaped welding member is made of a physically foamed thermal welding material.

In one embodiment, the annular welding member is made of microporous non-toxic foamed plastic.

100‧‧‧ can body

102‧‧‧ annular boss

110‧‧‧tank

112‧‧‧ Open

120‧‧‧The first ring-shaped adhesive part

122‧‧‧The first circular transition body

124‧‧‧ the first complex

126‧‧‧The first scratch-resistant part

200‧‧‧ can lid

210‧‧‧Second annular adhesive part

212‧‧‧Second annular transition body

214‧‧‧Second complex

216‧‧‧Second anti-scratch part

220‧‧‧ Cover

230‧‧‧ giving way groove

300‧‧‧Ring Welding Parts

FIG. 1 is an exploded view of a food can according to the present invention.

FIG. 2 is a schematic half sectional view of a sealed state of a food can according to the present invention.

FIG. 3 is a partially enlarged view of A in FIG. 2.

To make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and do not limit the protection scope of the present invention.

It should be noted that the "can body" and "can lid" are made of a coated metal sheet. Film-coated metal is made by laminating a plastic film to a metal plate through a high-temperature hot-pressing film, such as using PET, PC, PE or PP film and metal plate (tin plate, chrome plate, cold rolled plate, aluminum plate) to make. "Hot pressure bonding" refers to bonding and fixing by heat and pressure.

The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not meant to be the only implementations.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the present invention is merely to describe a specific embodiment It is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

The terms “first” and “second” in the present invention do not represent a specific quantity and order, but are only used to distinguish names.

As shown in FIG. 1 to FIG. 1, a food can according to the present invention includes a can body 100 made of a metal sheet and a can lid 200 made of a metal sheet. The can 100 includes an open body The can body 110 of the mouth 112 and the first annular adhesive portion 120 surrounding the edge of the open 112, and the can lid 200 is provided with a second annular adhesive portion 210 corresponding to the first annular adhesive portion 120, An annular welding member 300 is provided between the first annular adhesive portion 120 and the second annular adhesive portion 210. The first annular adhesive portion 120 is tightly fitted with the second annular adhesive portion 210 through the annular fusion member 300.

When the food can is used for packaging food, the food to be sealed is placed in the can 110 of the can 100, and then the lid 200 is covered, and the first ring-shaped adhesive portion 120 or the second is heated by using a preset pressure. The ring-shaped adhesive portion 210 allows the first ring-shaped adhesive portion 120 of the can body 100 to be sealed and fixed to the second ring-shaped adhesive portion 210 of the can lid 200 through the ring-shaped welding member 300, so that the food can be sealed and stored in the food can At the same time, the surface of the can body 110 is covered with a film, which can avoid food contact with the metal of the can body 110, avoid corrosion and damage of the can body 110, and waste food. When the stored food needs to be taken out, it is only necessary to cut the annular welding piece 300 so that The lid 200 is separated from the can body 100, and the food can be taken out from the opening 112. This process does not produce sharp edges, which effectively avoids cutting the operator's hand. The above food cans can be sealed and fixed to the can body 100 and the can lid 200 only by using the ring-shaped welding piece 300, which is convenient to operate and greatly reduces the production of metal food cans Cost; simple can sealing mechanism reduces the failure rate of the filling line; opening with a simple can opener will not cut the operator's hand.

On the basis of the foregoing embodiment, the first ring-shaped adhesive portion 120 includes a first ring-shaped transition body 122 fixed to the tank body 110 and a first mating body 124 fixed to the first ring-shaped transition body 122. The second annular adhesive portion 210 includes a second annular transition body 212 that is mated with the first annular transition body 122 and a second mating body 214 that is mated with the second annular transition body 212. The annular welding member 300 is disposed at the first Between a mating body 124 and a second mating body 214. Therefore, the first mating body 124 is fixed to the tank body 110 through the first ring-shaped transition body 122, and the corresponding second mating body 214 is fixed to the tank cover 200 through the second ring-shaped transition body 212, which is convenient for setting the first mating body as required. 124, further, the position of the ring-shaped welding member 300 can be set according to the needs, which is convenient for people to open the can lid 200; at the same time, the first ring-shaped adhesive portion 120 and the second ring-shaped adhesive portion 210 are also formed by pressing.

Further, the outer wall of the first annular transition body 122 is spaced from the outer wall of the tank body 110 to form an annular boss 102. Therefore, the use of the annular boss 102 is convenient for storing the can body 100 in the model, and it is convenient to set a supporting body in the model to support the first mating body 124, and it is convenient to apply a certain pressure on the first mating body 124; It is convenient for people to pick and place. Further, a ring-shaped boss 102 can be formed, so that the first mating body 124 is disposed below the ring-shaped boss 102, which can prevent the debris when cutting the ring-shaped welding piece 300 from falling into the tank, soiling or contaminating the tank. food.

Moreover, when the can body 100 is fixed at a preset position, the first mating body 124 and the second mating body 214 are both horizontally disposed. Therefore, when the can body 100 is placed horizontally, The first mating body 124 and the second mating body 214 are also horizontal, so that after the food is stored in the can body 110, the lid 200 is pressed and fixed to the can body 100 in the vertical direction, which is convenient for the first mating body. 124 is sealed and fixed to the second mating body 214 through the annular welding member 300.

Moreover, the outer wall of the first annular transition body 122 and the inner wall of the second annular transition body 212 are pressed against each other. Furthermore, the first ring-shaped transition body 122 and the second ring-shaped transition body 212 form an extrusion fit, which can prevent the gas generated when the ring-shaped welding member 300 is heated from entering the tank body 110, and further ensure the reliability of the tank body 110 sealing. Specifically, the first annular transition body 122 is annularly convex, and the second annular transition body 212 is groove-shaped.

In addition, the first annular transition body 122 and the first mating body 124 are smoothly docked and fixed, and the second annular transition body 212 and the second mating body 214 are smoothly docked and fixed. It is convenient for stamping and setting, reduces stamping springback, and improves the reliability of the cooperation of the can body 100 and the can lid 200.

Moreover, the can lid 200 is provided with a cover body 220 formed in a concave manner outward, and a yield groove 230 is provided between the cover body 220 and the second annular transition body 212. Therefore, the lid body 220 and the can body 110 cooperate to form a larger receiving space, and at the same time, a way-out groove 230 is provided to facilitate the clamping of the can lid 200 and the can body 100 to each other, so that the first annular adhesive portion 120 passes through the annular shape. The welding piece 300 and the second ring-shaped adhesive portion 210 are adhered and fixed reliably. Further, an opening portion is provided on the outside of the can lid 200. It is convenient for people to open the can lid 200.

Based on the foregoing embodiment, the first mating body 124 is provided with a first anti-scratching portion 126 on the outer edge, and the second mating outer edge is provided with a second anti-scratching portion 216. Therefore, by providing the first anti-scratching part 126 and the second anti-scratching part 216, the operator's hand is prevented from being scratched. Further, the first anti-scratching portion 126 is curled inwardly toward the first side portion and has an annular protrusion shape, and the second anti-scratching portion 216 is curled outwardly in a direction away from the first side portion and has an annular convexity. Rise. This embodiment is easy to implement, saves manufacturing costs, and has a beautiful appearance. Preferably, the cross-sections of the first and second scratch-resistant portions 126 and 216 are annular.

On the basis of the foregoing embodiment, the ring-shaped welding member 300 is a thermally-welded material that is physically foamed. Furthermore, the food can be sealed and stored reliably in the can body 100 to ensure the original taste of the food. Further, the annular welding member 300 is made of a foamed plastic material with microcellular physical foaming. It is convenient to cut the ring-shaped welding piece 300 by a small blade or a lid opening accessory to open the can lid 200, and at the same time, can ensure the tightness of the can lid 200 and the can body 100 to achieve a degree of sealing to prevent bacterial invasion.

The beneficial effects of the present invention:

1. The sealing process is simplified, the failure rate is low, and it is easy to adjust. There is no need for a complicated and expensive double crimping machine, no experienced sealing workers are needed, and it is convenient for automatic control.

2. It is suitable for aseptic filling and is convenient for promotion and application of aseptic filling.

3. Easy to open and convenient for consumption. For example, the bowl-shaped can body 100 is designed. After being opened, it can be directly placed on an induction cooker as a pot to heat food. When serving, it can be used as a bowl. After consumption, the can body 110 can overlap, which is greatly reduced compared with the cylindrical can body 110. Waste storage space; and because the cans 100 can overlap, empty cans are transported from the canning plant to the canning plant, which can save a lot of transportation vehicles and costs compared with cylindrical traditional empty cans.

4. The food can is easy to open, and the waste occupies less space, which is suitable for aerospace food packaging.

The technical features of the embodiments described above can be arbitrarily combined. In order to simplify the description, all possible combinations of the technical features in the above embodiments have not been described. However, as long as there is no contradiction in the combination of these technical features, It should be considered as the scope described in this specification.

The above-mentioned embodiments only express several implementation manners of the present invention, and their descriptions are more specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be noted that, for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the scope of the attached application patent.

Claims (9)

A food can includes a can body punched from a coated metal sheet and a can lid punched from the coated metal sheet. The can body includes an open can body and is disposed around the can body. The first annular adhesive portion on the open edge, the can lid is provided with a second annular adhesive portion corresponding to the first annular adhesive portion, and the first annular adhesive portion and the An annular welding member is provided between the second annular adhesive portions, and the first annular adhesive portion is sealingly fitted with the second annular adhesive portion through the annular welding member, wherein the first annular adhesive portion is The adhesive portion includes a first annular transition body that is fixedly docked with the tank body, and a first mating body that is fixedly docked with the first annular transition body, and the second annular adhesive portion includes the first annular transition body A ring-shaped transition body is sleeve-fitted with a second ring-shaped transition body, and a second ring-shaped transition body is butted with the second ring-shaped transition body. The ring-shaped welding member is disposed on the first and second mating bodies. Between bodies. The food can according to item 1 of the scope of patent application, wherein an outer wall of the first annular transition body and an outer wall of the can body are spaced apart to form an annular boss. The food can according to item 2 of the scope of patent application, wherein when the can body is fixed at a preset position, the first mating body and the second mating body are both horizontally disposed. The food can according to item 1 of the scope of patent application, wherein an outer wall of the first annular transition body is pressed against an inner wall of the second annular transition body. The food can according to item 1 of the scope of patent application, wherein the first annular transition body and the first mating body are smoothly docked and fixed, and the second annular transition body and the second mating body are smoothly transitioned. Butt fixed. The food can according to item 1 of the scope of patent application, wherein the can lid is provided with a cover body formed by being recessed outwardly, and a yield groove is provided between the cover body and the second annular transition body. The food can according to item 1 of the patent application scope, wherein an outer edge of the first mating body is provided with a first anti-scratch part, and an outer edge of the second mating body is provided with a second anti-scratch part. The food can according to item 7 of the scope of patent application, wherein the first anti-scratch part is curled inward in a direction close to the first side part and has an annular convex shape, and the second anti-scratch part is away from the The direction of the first side portion is curled outward, and is annularly convex. The food can according to any one of claims 1 to 8, wherein the annular welding member is a thermally-welded material that is physically foamed.