TWI577619B - Equipment and method for manufacturing insulation containers - Google Patents

Description

Apparatus and method for manufacturing insulated container

The invention relates to a method and a device for manufacturing an insulated container, in particular to a method and a device for manufacturing a disposable insulated container.

With the development of scientific and technological civilization, modern people's requirements for the quality of life have increased. The requirements for food are more convenient than the delicious ones, which leads to the convenience of fast food. Usually, in order to achieve the convenience of use, these fast foods are often used in disposable disposable containers. However, the container used for the instant foods has a poor heat preservation effect. Under normal temperature conditions, the food will lose its original cold or warm temperature sense in a short period of time, which may deteriorate the taste and even deteriorate.

In order to keep these portable instant foods with their original flavor, the disposable containers for the instant foods on the market are often made of a foaming material having a better heat preservation effect, for example, styrofoam. However, styrofoam is extremely energy intensive in production and environmentally friendly when recycled.

In addition, the paper insulation container used at present is more than the outer side of the container adhered to the insulation material to achieve the effect of heat preservation.

Referring to the conventional method for manufacturing the insulated container 1 shown in FIGS. 1A to 1B, an adhesive layer 110 is coated on the foamed material 11, and the foamed material 11 is adhered to the outside of the container body 10 by the adhesive layer 110. On the surface, to get The insulated container 1 as shown in Fig. 1B. The conventional heat insulating container 1 includes a container body 10; an adhesive layer 110 is formed on the outer surface of the container body 10; and a foaming material 11 is attached to the container body 10 by the adhesive layer 110, so that The conventional insulated container 1 has a heat insulating effect. However, the conventional method is to adhere the foamed material to the container by the adhesive layer, so that the problem of uneven glue or uneven adhesion is liable to occur, resulting in poor product yield and an increase in production cost. Furthermore, it is a kind of heat preservation container that is not conducive to separating and recycling different materials, which also causes environmental protection issues.

With the rise of environmental awareness, countries have advocated waste reduction and resource recycling. Therefore, disposable containers must not only meet the convenience requirements, but also facilitate recycling and become the focus of disposable container development. However, conventional insulated containers are difficult to separate the paper thermal insulation container from the foamed material when it is to be recycled because the adhesive layer is used to coat the thermal insulation material.

Therefore, it is necessary to develop an insulated container which has low manufacturing cost, good heat preservation effect, and convenient resource recovery.

In view of the above-mentioned deficiencies of the prior art, the present invention provides a method of manufacturing an insulated container, comprising: providing a foamed sheet having a first joint portion and a second joint portion; and first stacking the foam sheet Forming a hollow sleeve with the second joint portion; and inserting a container body into the hollow sleeve, wherein the inner diameter of the hollow sleeve is larger than the outer diameter of the container body, and the hollow sleeve is heat-shrinked to the container body And obtaining an insulated container, wherein the temperature at which the foamed sheet is thermally deformed is lower than a temperature at which the container body is thermally deformed.

The present invention provides an apparatus for manufacturing an insulated container, comprising: a sheet conveyer for conveying a foamed sheet having opposite first and second joint portions; and a kit splicer for receiving the sheet a foamed sheet conveyed by the conveyor, and splicing the first and second joint portions of the foamed sheet, forming a hollow sleeve; a container body feeder for outputting the container body, and the container body feeder Having a receiving structure for receiving the hollow kit and placing the output container body into the hollow kit; and a heater for subjecting the hollow kit containing the container body to heat shrinkage to the container body container.

In the apparatus of the present invention, the kit splicer comprises: a center pillar: a holding member disposed beside the center pillar for the foam sheet to be transported between the center pillar and the gripping member, After foaming the sheet, the first and second joint portions of the foam sheet are overlapped; and the ultrasonic welding machine is configured to contact and weld the first and second joint portions to form a hollow Kit.

In one embodiment, the kit splicer includes a guide member that guides the hollow kit to the receiving structure.

In the manufacturing method of the present invention, the first bonding portion and the second bonding portion of the foamed sheet are heated to be laminated, and a hollow package is formed. In one embodiment, the first joint portion and the second joint portion of the foamed sheet are superposed by ultrasonic waves to form a hollow sleeve.

In the manufacturing method of the present invention, the foamed sheet is subjected to heat deformation at a temperature lower than a temperature at which the container body is subjected to heat deformation by at least 10 °C. Generally, the temperature at which the foamed sheet is thermally deformed refers to the glass transition temperature (Tg), but the container body may be a polymer material or paper, and thus does not necessarily refer to the glass transition temperature. The hollow After the heat shrinkage of the kit, the container body is in close contact with each other, that is, the outer contour of the container body is in close contact with the inner wall of the hollow sleeve. More specifically, the hollow kit is retracted in a radial direction to be bundled with the container body.

In the manufacturing method of the present invention, the material of the foamed sheet may be expanded polystyrene (EPS), expanded polyethylene (EPE) or expanded polypropylene (EPP). At least one of them, but not limited to this.

In a specific embodiment, the foamed sheet has a cross-linkage density of 30 to 50%, preferably an electron-crosslinked polypropylene foam (IXPP) or an electronic cross-linked polyethylene foam. (IXPE).

In another embodiment, the foamed sheet has a shrinkage rate of greater than 3%, or even greater than 5% or 10%.

In yet another embodiment, the foamed sheet has a thickness of between 0.5 and 3 mm.

In another aspect, the method of manufacture of the present invention physically joins the container body to the hollow kit.

It can be seen from the above that in the manufacturing method and apparatus of the present invention, by using a foamed sheet having a temperature less than the heat of the container body as the material of the hollow kit, the temperature of the foamed sheet can be heated and deformed. The shrinkage and shrinkage of the blister sheet is applied to the container body, and the heat insulating material can be adhered to the container without being adhered to the container, thereby imparting a better heat preservation effect to the container.

1, 2‧‧‧ insulated containers

10‧‧‧ container body

11‧‧‧Foam material

110‧‧‧Adhesive layer

20‧‧‧ container body

21‧‧‧ hollow kit

21a‧‧‧ first joint

21b‧‧‧Second junction

210‧‧‧Overlapping areas

211‧‧‧Foam sheet

40‧‧‧Sheet conveyor

41‧‧‧ kit splicer

410‧‧‧ center column

411‧‧‧ Holder

412‧‧‧Supersonic welding machine

420‧‧‧ receiving structure

42‧‧‧Extraction agency

421‧‧‧Extraction

422‧‧‧guides

43, 43'‧‧‧ container body feeder

44‧‧‧heater

440‧‧‧ 容 部

A‧‧‧OD

B, B’‧‧‧ inside diameter

E‧‧‧Extension direction

S‧‧‧Shrinking direction

1A to 1B are schematic cross-sectional views showing a conventional method for manufacturing an insulated container, wherein FIG. 1A is a schematic view showing a combination of a container body and a foaming material, and FIG. 1B is a schematic view showing a combination of a container body and a foaming material; 2A to 2D are schematic views showing a method of manufacturing an insulated container of the present invention; Fig. 3 is a flow chart showing the operation of the apparatus for manufacturing an insulated container of the present invention; and Fig. 4 is a sheet conveyer of the apparatus for manufacturing an insulated container of the present invention. 3A to 5B are perspective views of a kit splicer of the apparatus for manufacturing an insulated container of the present invention, wherein FIG. 5B is a schematic perspective view of the operation of the ultrasonic fusion splicer; FIG. 6 is a perspective view of the invention for manufacturing an insulated container A perspective view of a container body feeder of the apparatus, wherein FIG. 6' is a perspective view of another embodiment of FIG. 6; and FIG. 7 is an embodiment of a heater of the apparatus for manufacturing an insulated container of the present invention. Stereoscopic view.

The other embodiments of the present invention will be readily understood by those skilled in the art from this disclosure.

It is to be understood that the structure, the proportions, the size, and the like of the present invention are intended to be used in conjunction with the disclosure of the specification, and are not intended to limit the invention. The conditions are limited, so it is not technically meaningful. Any modification of the structure, change of the proportional relationship or adjustment of the size should remain in this book without affecting the effects and the objectives that can be achieved by the present invention. The technical content disclosed in the invention can be covered. At the same time, as mentioned in this manual, "上上" And the terms "a" and "the" are used to describe the scope of the invention, and the relative relationship may be changed or adjusted. The scope of implementation.

As used herein, the term "physical fit" is intended to include, but is not limited to, any conformation that is not adhered to the adhesive (eg, by friction).

The term "fixed friction" means, but is not limited to, the friction generated by the inner surface of the hollow kit being closely attached to the outer surface of the container body, so that the hollow kit and the container body are difficult to separate to achieve a fixing effect.

2A to 2D are schematic cross-sectional views showing a method of manufacturing an insulated container of the present invention.

Referring to FIG. 2A, a foamed sheet 211 having a first joint portion 21a and a second joint portion 21b is provided.

In one embodiment, the foamed sheet is provided by Hongjun Enterprise Co., Ltd. (model R3002S1W3), and is formed by foaming in a radial direction, and after being cut, a foamed sheet is obtained, and the foamed sheet is obtained. The foaming direction E is a radial direction.

As shown in FIG. 2B, the first joint portion 21a and the second joint portion 21b of the foamed sheet are laminated to form a hollow sleeve 21, wherein the hollow sleeve 21 has an inner diameter B. More specifically, the overlapping region 210 formed by overlapping the first joint portion 21a and the second joint portion 21b is heated to be overlapped.

In the present embodiment, the method of the heat treatment joining is not particularly limited, and the heating temperature may only melt at least partially the first and second joint portions of the overlapping region. In order to make the method of the present invention have better effects, the present invention The Ming system uses an ultrasonic welding machine to press at a pressure of 1 to 5 kg and stays for 0.5 to 2 seconds to shape the overlapping regions, and quickly join the first joint portion 21a and the second joint portion 21b of the overlap region.

As shown in FIG. 2C, a container body 20 is provided, and the container body 20 is placed in the hollow package 21, and the inner diameter B of the hollow package 21 is larger than the outer diameter A of the container body 20. Examples of the container body 20 include a drink cup or a bowl or the like, but are not limited thereto.

In addition, the material of the container body is not particularly limited, and the temperature of the container body is only required to be deformed by heat more than the foamed sheet. Preferably, the temperature of the container body is greater than the heat deformation of the foam sheet. The temperature is at least 10 ° C, more preferably at least 20 ° C, or higher. In one embodiment, the container body is made of polypropylene (PP) or polylactic acid (PLA).

As shown in Fig. 2D, following the 2C figure, the present invention finds that when the foamed sheet is heated again, shrinkage still occurs, and the hollow package 21 is also so that it shrinks the bundle in the contraction direction S by heat. In the container body 20, the heat insulating container 2 is obtained, wherein the inner diameter B' of the hollow sleeve 21 after being contracted in the radial direction is very close to the outer diameter A of the container body 20.

In the present embodiment, the method for the heat treatment is not particularly limited, and only needs to be heated at a temperature at which the foamed sheet is subjected to heat deformation, and the hollow sleeve is contracted and adhered to the container body, thereby obtaining the heat insulating container 2 .

Please refer to FIG. 3 for a flow chart of the operation of the apparatus for manufacturing an insulated container of the present invention. First, a foamed sheet is supplied from the sheet conveyer 40, and then the foamed sheet is stacked by a kit splicer 41 having an ultrasonic fusion splicer. Connected to a hollow kit and output to the container body feeder 43 to sleeve a container body, and physically combine the container body with the hollow kit with the heater 44 to obtain an insulated container.

Referring to Fig. 4, the sheet conveyer 40 of the apparatus for manufacturing an insulated container of the present invention is for providing a foamed sheet 211 having a first joint portion 21a and a second joint portion 21b. In one embodiment, the sheet conveyor can output the processed fan-shaped foamed sheet 211 to fit over the beverage cup.

Referring to FIGS. 5A and 5B, the kit splicer 41 of the present invention is configured to receive the foamed sheet 211 conveyed by the sheet conveyer 40, and splicing the first joint portion and the first portion of the foamed sheet 211 The two joints form a hollow sleeve 21. In one embodiment, the kit splicer 41 has a center pillar 410, a gripping member 411, and an ultrasonic fusion splicer 412.

As shown in FIG. 5A, the holding member 411 is movably disposed on both sides of the center pillar 410, so that the foamed sheet 211 is transported between the center pillar 410 and the gripping member 411, and the gripping member 411 The foamed sheet 211 is pushed up, and the foamed sheet 211 is bent by the center pillar 410. After the foamed sheet 211 is held, the first joint portion of the foamed sheet 211 is joined to the second joint. After the overlapping region 210 is formed, and then the ultrasonic welding machine 412 briefly contacts the overlapping region 210, the holding member 411 starts to release the first and second bonding portions, and briefly contacts the overlapping region 210 through the ultrasonic fusion splicer 412. Thereafter the overlap region 210 has been heat bonded to form a hollow kit 21 as shown in Figure 5B.

In this embodiment, the holding member is not particularly limited, and only the jig that matches the contour of the middle column is needed, wherein the holding member holds the first And the second bonding portion stays for 1 to 4 seconds; the ultrasonic welding machine partially melts the first and second bonding portions of the overlapping region, wherein the ultrasonic welding machine stays in the overlapping region for 0.5 to 2 second.

Referring to Fig. 6, the container body feeder 43 of the apparatus for manufacturing an insulated container of the present invention is for outputting the container body 20 and being placed in the hollow package 21.

In an embodiment of the present invention, the apparatus for manufacturing an insulated container of the present invention is provided with an extracting mechanism 42. After the hollow set 21 is prepared by the kit splicer 41, the hollow set 21 is sent to the container body feeder 43. The extraction mechanism 42 includes an extraction member 421 and a guide member 422 for removing the hollow package 21 from the center pillar 410 and guiding it to the container body feeder 43 in the direction of the guide member 422. ', the extracting member 421 is not particularly limited, and it is only necessary to drag the hollow kit 21 in the direction of the guiding member 422 and guide it to the container body feeder 43'. The container body feeder 43' has a receiving structure 420, such as the receptacle or notch structure shown in FIG. 6', and the extracting member 421 is used to remove the hollow package 21 from the center pillar 410 and follow the The direction of the guide 422 is directed to the receiving structure 420.

The heat generating device of the device for manufacturing the heat insulating container is such that the hollow package 21 in which the container body 20 is housed is heat-shrinked to the container body 20 to obtain a heat insulating container. Therefore, the heater can be disposed together with the container body feeder. For example, the heater can be disposed at a position after the container body 20 is placed in the hollow package 21. Alternatively, in another embodiment, as shown in FIG. 7, the heater 44 is configured to heat and accommodate the container body 20 and the hollow sleeve. The accommodating portion 440 of the member 21 allows the container body 20 to pass through the accommodating portion 440, and the outer contour thereof is in close contact with the inner wall of the hollow package 21.

In summary, the method and apparatus for manufacturing an insulated container of the present invention, wherein the temperature of the heat-deformed deformation of the foamed sheet is smaller than the temperature of the heat-deformed deformation of the container body, and the hollow sleeve is radially oriented by heating Shrinking, thereby bringing the inner wall of the hollow kit into close contact with the container body, so that the hollow kit and the container body are physically bonded, and the container can be insulated without additional adhesive, and can be overcome without using an adhesive. It is known that the overflowing glue produced by the method of manufacturing the heat insulating container and the difficulty in separating the foaming material and the container body cause the inconvenience of resource recovery.

The above embodiments are intended to illustrate the principles of the invention and its effects, and are not intended to limit the invention. Any of the above-described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention should be as set forth in the appended claims.

2‧‧‧Insulation container

20‧‧‧ container body

21‧‧‧ hollow kit

A‧‧‧OD

B’‧‧‧Inner diameter

S‧‧‧Shrinking direction

Claims (12)

A method for manufacturing an insulated container, comprising: providing a foamed sheet having a first joint portion and a second joint portion; and laminating the first joint portion and the second joint portion of the foam sheet, forming a a hollow kit; and a container body is inserted into the hollow sleeve, and an inner diameter of the hollow sleeve is larger than an outer diameter of the container body, and the hollow sleeve is heat-shrinked to the container body to obtain an insulated container, wherein The temperature at which the foamed sheet is thermally deformed is lower than the temperature at which the container body is thermally deformed. The method of manufacturing an insulated container according to claim 1, wherein the foamed sheet is subjected to heat deformation at a temperature lower than a temperature at which the container body is subjected to heat deformation by at least 10 °C. The method of manufacturing an insulated container according to claim 1, wherein the hollow kit is contracted in a radial direction to be bundled with the container body. The method of manufacturing an insulated container according to claim 1, wherein the first joint portion and the second joint portion of the foamed sheet are heated to be overlapped to form a hollow package. The method for manufacturing an insulated container according to claim 4, wherein the first joint portion and the second joint portion of the foamed sheet are superposed by ultrasonic waves to form a hollow kit. A method of manufacturing an insulated container as described in claim 1 of the patent application, Wherein, the foamed sheet has a crosslinkage density of 30 to 50%. The method of manufacturing an insulated container according to claim 1, wherein the foamed sheet has a shrinkage rate of more than 3%. The method of manufacturing an insulated container according to claim 1, wherein the container body is physically joined to the hollow kit. The method of manufacturing an insulated container according to claim 1, wherein the foamed sheet has a thickness of 0.5 to 3 mm. An apparatus for manufacturing an insulated container, comprising: a sheet conveyor for conveying a foamed sheet having opposite first and second joints; and a kit splicer for receiving the sheet conveyer Foaming the sheet, and laminating the first joint portion and the second joint portion of the foam sheet, forming a hollow sleeve; the container body feeder for outputting the container body, and the container body feeder has receiving The structure is configured to receive the hollow package and place the output container body into the hollow package; and the heat generator to heat-shrink the hollow package accommodating the container body to the container body to obtain an insulated container. The apparatus for manufacturing an insulated container according to claim 10, wherein the kit splicer comprises: a center pillar: a holding member is disposed beside the center pillar for the foam sheet to be transported to the Between the middle column and the holding member, after holding the foamed sheet, stack And connecting the first bonding portion and the second bonding portion of the foamed sheet; and the ultrasonic welding machine is configured to contact and weld the first bonding portion and the second bonding portion to form a hollow package. The apparatus for manufacturing an insulated container according to claim 11, wherein the kit splicer further includes a guide member that guides the hollow kit to the receiving structure.