CN115783456A

CN115783456A - Packaging container and method for manufacturing the same

Info

Publication number: CN115783456A
Application number: CN202310050964.6A
Authority: CN
Inventors: 马人杰; 苗晨光; 赵春磊; 张军
Original assignee: Kangmeibao Suzhou Co ltd
Current assignee: Kangmeibao Suzhou Co ltd
Priority date: 2023-02-02
Filing date: 2023-02-02
Publication date: 2023-03-14
Anticipated expiration: 2043-02-02
Also published as: CN115783456B

Abstract

The present invention provides a packaging container formed from the packaging precursor, the packaging container comprising: a top surface, a bottom surface, a side surface extending between the top surface and the bottom surface, and a bond disposed on at least one of the top surface, the bottom surface, and the side surface; the manufacturing method comprises the following steps: forming the bond, wherein the forming the bond comprises: illuminating the pre-bonded structure on the package precursor such that at least a portion of the pre-bonded structure is melted by the heat. According to the invention, at least part of the pre-combined structure is heated and melted to realize combination by illuminating the pre-combined structure on the packaging precursor, so that the control on the shape of a heating region can be improved, the heating time is shortened, the yield in unit time is improved, and the production efficiency is improved.

Description

Packaging container and method for manufacturing same

Technical Field

The disclosure relates to the field of food packaging, in particular to a packaging container and a manufacturing method thereof.

Background

Generally, liquid foods such as milk, yogurt, soup, etc. are sold in packaging containers made of aseptic packaging materials. The packaging container is generally formed by folding, sealing, etc. a packaging sheet. The packaging sheet material comprises a folding line pattern, in the process of forming the packaging container, the packaging sheet material is firstly folded along the folding line pattern, then the longitudinal seam of the packaging sheet material is bonded to form a packaging sleeve with an upper end opening and a lower end opening, then one end opening of the packaging sleeve is sealed and filled with liquid, after the liquid filling is finished, the other end opening is sealed, and finally the packaging container filled with the liquid food is formed.

Disclosure of Invention

The embodiment of the disclosure provides a packaging container and a manufacturing method thereof, wherein a pre-combination structure on a packaging precursor is illuminated to heat and melt at least part of the pre-combination structure to realize combination, so that the control on the shape of a heating region can be improved, the heating time is shortened, the yield in unit time is improved, and the production efficiency is improved.

According to a first aspect of the present disclosure, there is provided a method of manufacturing a packaging container, wherein the packaging container is formed from a packaging precursor, the packaging container comprising: a top surface, a bottom surface, a side surface extending between the top surface and the bottom surface, and a bond disposed on at least one of the top surface, the bottom surface, and the side surface; the manufacturing method comprises the following steps: forming the bond, wherein the forming the bond comprises: illuminating the pre-bonded structure on the package precursor to cause at least a portion of the pre-bonded structure to melt under heat.

In at least some embodiments, the packaging container comprises a packaging sheet, the pre-bond structure comprises one of a first pre-bond structure and a second pre-bond structure: the first pre-bonded structure comprises a plurality of packaging sheets arranged in a stack; the second pre-bonded structure includes the packaging sheet and a bonding member configured to bond to the packaging sheet.

In at least some embodiments, the pre-bond is the first pre-bond, the multi-layer packaging sheet contacting each other in a thickness direction of the packaging sheet to form a sheet contact; the illuminating the pre-bonded structure comprises: illuminating the multi-layer packaging sheet to heat and melt part or all of the sheet contacting portions, thereby bonding the multi-layer packaging sheets to each other.

In at least some embodiments, the multi-layer packaging sheet comprises a first side and a second side opposite to each other in a thickness direction of the packaging sheet; the illuminating the multi-layer packaging sheet comprises: illuminating the multi-layer packaging sheet from at least one of the first side and the second side.

In at least some embodiments, the pre-bond is the second pre-bond, the packaging sheet and the bonding component contact each other in a thickness direction of the packaging sheet to form a sheet component contact; the illuminating the pre-bonded structure comprises: illuminating at least one of the packaging sheet and the bonding member to heat and melt part or all of the sheet member contact portion, thereby bonding the bonding member and the packaging sheet to each other.

In at least some embodiments, the bonding means is further away from the contents of the packaging container than the packaging sheet in a thickness direction of the packaging sheet; the illuminating at least one of the packaging sheet and the bonding member comprises: illuminating both the bonding means and the packaging sheet.

In at least some embodiments, the packaging precursor comprises a packaging sleeve comprising a top opening and a bottom opening opposite to each other in a first direction, at least one of the top opening and the bottom opening forming an open-ended pre-bond structure, the open-ended pre-bond structure being the first pre-bond structure; wherein the packaging container further comprises a top seal and a bottom seal opposite each other in the first direction, the top seal being located at the top surface, the bottom seal being located at the bottom surface, at least one of the top seal and the bottom seal comprising a first bond; wherein the forming the joint includes: forming the first bond, wherein the open-ended pre-bond structure is illuminated to heat melt at least a portion of the open-ended pre-bond structure to form the first bond to form at least one of the top seal and the bottom seal.

In at least some embodiments, the packaging sheet comprises two end portions opposite to each other in a second direction, the second direction being perpendicular to the first direction, the two end portions overlapping each other in a thickness direction of the packaging sheet to form a side-port pre-bond, the side-port pre-bond being the first pre-bond; wherein the packaging sleeve further comprises a side seal extending in the first direction from the bottom opening to the top opening, the side seal being located at the side surface and comprising a second bond; wherein the forming the joint further comprises: forming the second bond, wherein the side-port pre-bond structure is illuminated to heat melt at least a portion of the side-port pre-bond structure to form the second bond to form a side seal.

In at least some embodiments, the packaging container further comprises an ear flap located on the side surface, the top seal extending from the top surface to the side surface to form the ear flap, the ear flap and the side surface forming an ear flap pre-bond structure, the ear flap pre-bond structure being the first pre-bond structure; the side surface includes a third bond; wherein the forming the joint further comprises: forming the third bond, wherein the earflap pre-bond structure is illuminated to heat melt at least a portion of the earflap pre-bond structure to form the third bond, thereby bonding the earflap and the side surface to one another.

In at least some embodiments, the packaging container further comprises a flow guide member configured to be attached to a top surface of the packaging container and to pour out contents of the packaging container; wherein the packaging container comprises a top seal comprising two sides opposite to each other in an extension direction perpendicular to the top seal, the flow directing component being located on one of the two sides, the top surface and the flow directing component forming a flow directing pre-bond structure, the flow directing pre-bond structure being the second pre-bond structure; the top surface includes a fourth bond; wherein the forming a joint further comprises: forming the fourth bonding portion, wherein the flow guide pre-bonding structure is irradiated with light to form the fourth bonding portion to heat and melt at least a portion of the flow guide pre-bonding structure, thereby bonding the flow guide member and the top surface to each other.

In at least some embodiments, the packaging container further comprises a straw assembly located on the side surface, the coupling component comprises the straw assembly, the straw assembly comprises a straw and a tube sleeve sleeved on the straw, the side surface and the tube sleeve form a tube sleeve pre-coupling structure, and the tube sleeve pre-coupling structure is the second pre-coupling structure; the side surface further includes a fifth junction; the forming the joint further includes: forming the fifth bond, wherein the pipe sleeve pre-bond structure is illuminated to heat melt at least a portion of the pipe sleeve pre-bond structure to form the fifth bond, thereby bonding the pipe sleeve and the side surface to each other.

In at least some embodiments, the package precursor comprises a package sleeve comprising a top opening and a bottom opening opposite to each other in a first direction; wherein the packaging container further comprises a flow guide member configured to be attached to a top surface of the packaging container and to guide contents of the packaging container out of the packaging container, the top opening and the flow guide member forming a top opening pre-bond structure, the top opening pre-bond structure being the second pre-bond structure; the top surface further comprises a sixth bond, wherein the forming a bond further comprises: forming the sixth bonding portion, wherein the open-top pre-bonding structure is irradiated with light to melt at least a portion of the open-top pre-bonding structure by heat, so that the flow guide member and the open top are bonded to each other.

In at least some embodiments, the bottom opening comprises a bottom opening pre-bond structure, the bottom opening pre-bond structure being the first pre-bond structure, the packaging container further comprising a bottom seal, the bottom seal being located at the bottom surface, the bottom seal comprising a seventh bond; wherein the forming the joint comprises: forming the seventh bond, wherein the bottom opening pre-bond structure is illuminated to heat and melt at least a portion of the bottom opening pre-bond structure to form the seventh bond, thereby forming the bottom seal.

In at least some embodiments, the top surface has a gable top shape, the top surface including an angled face and an ear flap extending to the angled face, the ear flap and the angled face forming an ear flap pre-bond structure, the ear flap pre-bond structure being the first pre-bond structure; the top surface further comprises an eighth bond; wherein the forming a joint further comprises: forming the eighth bonded portion, wherein the earflap pre-bonded structure is illuminated to heat and melt at least a portion of the earflap pre-bonded structure to form the eighth bonded portion, thereby bonding the earflap and the inclined surface to each other.

In at least some embodiments, the prebond structure is obtained by folding a sheet of packaging material.

In at least some embodiments, the forming the bond further comprises: compressing the pre-bonded structure.

In at least some embodiments, the light for illumination is laser light with a wavelength of 1000 to 1100nm emitted by a laser.

In at least some embodiments, the illuminating light is infrared light generated by a thermal radiation source.

In at least some embodiments, the illumination time is 0.1 to 10 seconds.

According to a second aspect of the present disclosure, there is provided a packaging container manufactured by the above-described manufacturing method.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure and are not limiting to the present disclosure.

Fig. 1 is a schematic plan view of a packaging sheet provided by an embodiment of the present disclosure;

fig. 2 is a schematic structural view of a packaging sleeve provided by an embodiment of the present disclosure;

fig. 3 is a schematic structural view of a packaging container provided by an embodiment of the present disclosure;

FIG. 4 is an illumination schematic of a first pre-bonding structure of an embodiment of the present disclosure;

FIG. 5 is another schematic illumination view of a first pre-bonding structure according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a second prebond structure in accordance with an embodiment of the present disclosure;

FIG. 7 is a schematic cross-sectional view of a side seal of a packaging sheet provided by embodiments of the present disclosure;

FIG. 8 is a schematic structural diagram of the first prebond structure of FIG. 7;

FIG. 9 is a schematic structural view of another packaging container provided in the embodiments of the present disclosure;

FIG. 10 is a schematic view of a further packaging container provided in accordance with an embodiment of the present disclosure;

FIG. 11 is a schematic structural view of a flow directing member according to an embodiment of the present disclosure;

fig. 12 is a partial schematic structural view of an apparatus for manufacturing packaging containers according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural view of a profiled rod provided in accordance with an embodiment of the present disclosure;

FIG. 14 is a schematic structural view of a sealing assembly and packaging sleeve provided by an embodiment of the present disclosure;

fig. 15 is a schematic structural view of a heat radiation assembly provided in an embodiment of the present disclosure;

fig. 16 is a plan view schematically illustrating the heat radiation assembly of fig. 15;

fig. 17 is a schematic sectional view of a blocking member in the heat radiation assembly of fig. 15;

fig. 18 is a schematic view illustrating a structure of another heat radiation assembly provided in an embodiment of the present disclosure;

fig. 19 is a schematic plan view of the heat radiation assembly of fig. 18;

fig. 20 is a schematic plan view of a sheet radiator according to an embodiment of the present disclosure;

fig. 21 is a schematic sectional view of a blocking member in the heat radiation assembly of fig. 18;

FIG. 22A is a schematic structural view of the first blocking member of FIG. 21;

FIG. 22B is a schematic view of the second and third barriers of FIG. 21;

fig. 23 is a schematic structural view of still another heat radiation member provided in the embodiment of the present disclosure;

fig. 24 is a plan view schematically illustrating the heat radiation assembly of fig. 23;

FIG. 25 is an enlarged fragmentary plan view of a second side of the support member of FIG. 23;

fig. 26 is a schematic flow chart of a manufacturing method of a packaging container provided by an embodiment of the disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in the description and claims of the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

In the process of manufacturing the packaging container, it is necessary to bond not only the packaging sheet itself, for example, both end portions of the packaging sleeve, but also bonding members such as a cover, a suction pipe assembly, and the like to the packaging sheet.

For better bonding, the site to be bonded is usually preheated before bonding. For example, in order to improve the bonding effect of the end openings and to provide the end openings with a better sealing property, the packaging apparatus is provided with a heating nozzle for preheating the region of the end openings to be sealed before sealing the end openings.

When heating, the heating nozzle extends into the sleeve from the end opening of the packaging sleeve, the side wall of the heating nozzle is provided with a plurality of spray holes, and the gas sprayed from each spray hole is used for heating the region to be sealed in the sleeve, so that the bonding layer of the region to be sealed is in a molten state, and subsequent sealing is facilitated. This heating method is called a "hot air heating method".

In the hot air heating method, since the gas serving as the heating medium has diffusivity, the shape of the heating region is uncontrollable, and heating of the non-sealing region is inevitable, so that the heating time and the manufacturing time of the packaging container are prolonged, the yield per unit time is lowered, and the production efficiency is lowered.

Embodiments of the present disclosure provide a method of manufacturing a packaging container formed from a packaging precursor, the packaging container comprising: a top surface, a bottom surface, a side surface extending between the top surface and the bottom surface, and a bond disposed on at least one of the top surface, the bottom surface, and the side surface; the manufacturing method comprises the following steps: forming a bond, wherein forming the bond comprises: the pre-bonded structure on the package precursor is illuminated to cause at least a portion of the pre-bonded structure to melt upon heating.

In the embodiments of the present disclosure, "illuminating" refers to irradiating with a light beam to heat the pre-bonded structure to melt (i.e., to reach a molten state) at least a portion of the pre-bonded structure, thereby facilitating bonding. In some embodiments, the light beam for illumination is laser, the pre-bonded structure is heated by the laser, and the pre-bonded structure is melted by heating when the temperature of the pre-bonded structure rises. In other embodiments, the light beam for illumination is invisible light, such as infrared light. The infrared radiation pre-combination structure is utilized, and after the pre-combination structure absorbs infrared rays, radiation energy is converted into heat energy to be heated.

In the method for manufacturing the packaging container, the pre-bonding structure on the packaging precursor is irradiated by light so that at least part of the pre-bonding structure is melted by heating to achieve bonding. Compared with a hot air heating mode, on one hand, the manufacturing time of the packaging container is greatly shortened, the yield in unit time is improved, and the production efficiency is improved; on the other hand, because the heating area of the hot air heating mode is not easy to control, the heated shape is poor, and the heating area of the beam heating mode is more regular, the heating process becomes more controllable, and the further process optimization is facilitated; on the other hand, the light beam intensity or the illumination time can be set according to actual needs, and the requirements on different types of combination structures can be met more flexibly.

In the embodiments of the present disclosure, the number of the bonding portions may be one or more, and "a plurality" means two or more. The plurality of junctions may be distributed on one, two, or three of the top, bottom, and side surfaces, and the number and positions of the junctions are not limited by the embodiments of the present disclosure.

It should be noted that, herein, the position of the combining portion on/distributed on a surface means that the combining portion is located within the range of the surface, and the combining portion may or may not be in contact with the surface.

The invention is illustrated below by means of several specific examples. Detailed descriptions of known functions and known components may be omitted in order to keep the following description of the embodiments of the present invention clear and concise. When any element of an embodiment of the present invention appears in more than one drawing, that element may be referred to by the same reference numeral in each drawing.

In the embodiments of the present disclosure, "packaging precursor" refers to an unformed packaging product at an intermediate stage prior to forming a final packaging container, the packaging precursor including, but not limited to, packaging sheets, packaging sleeves, and the like.

Fig. 1 is a schematic plan view of a packaging sheet provided by an embodiment of the present disclosure. Fig. 2 is a schematic structural view of a packaging sleeve according to an embodiment of the present disclosure.

For example, the packaging sheet 1 is typically cut from a web of packaging material. The packaging sheet 1 comprises a plurality of laminated composite material layers. For example, the packaging sheet 1 comprises an outer layer, a paper layer, a barrier layer, an inner layer and the like, wherein the outer and inner layers are made of a polyethylene material, such as PE.

As shown in fig. 1, for example, the packaging sheet 1 comprises a folding pattern comprising: a first folding line F1 and a second folding line F2. At least part of the first folding line F1 is intended to form the circumference of the top of the packaging container. At least part of the second fold line F2 is intended to form the circumference of the bottom of the packaging container.

In the embodiment of the present disclosure, the top of the packaging container may be flat-topped or mountain-topped, and the first folding line F1 may be a straight line or an arc line that repeats periodically according to the shape of the top.

For example, in fig. 1, the first folding line F1 is a straight line extending along a second direction (such as the X direction shown in the figure), so that a flat-top-shaped packaging container can be formed. When the first folding line F1 is a periodically repeating arc, a mountain top-shaped packaging container may be formed. The second fold line F2 extends in the X-direction, which facilitates the formation of a stable bottom for the packaging container.

For example, as shown in fig. 1, the first fold line F1 and the second fold line F2 divide the packaging sheet 1 into a first region S1, a second region S2, and a third region S3, and the second region S2 is located between the first region S1 and the third region S3 in a first direction (e.g., Y direction shown in the figure). The first area S1 is intended to form the top surface of the packaging container, the third area S3 is intended to form the bottom surface of the packaging container, and the second area S2 is intended to form the side surface of the packaging container.

For example, as shown in fig. 1, the folding pattern further comprises a third folding line F11, a fourth folding line F31 for defining a top sealing area S11 and a bottom sealing area S31, respectively, of the packaging container. The third folding line F11 is located in the first region S1, and the fourth folding line F31 is located in the third region S3. In the Y direction, the third folding line F11 is located on a side of the first folding line F1 away from the second folding line F2, and the fourth folding line F31 is located on a side of the second folding line F2 away from the first folding line F1.

For example, as shown in fig. 2, the packaging sleeve 10 is a sleeve surrounded by the packaging sheet 1, having a top opening 10A and a bottom opening 10B. The top seal area S11 surrounds the top opening 10A, and the bottom seal area S31 surrounds the bottom opening 10B.

For example, as shown in fig. 1, the folding pattern further comprises a fifth fold line E1, a sixth fold line E2 extending in a first direction (e.g. the Y-direction as shown in the figure) for forming two seam areas of the packaging container, namely a first seam area T1, a second seam area T2. In the process of forming the packaging container, the first seam region T1, the second seam region T2 of the packaging sheet 1 are joined to each other, forming the packaging sleeve 10 of fig. 2 with two end openings.

It should be noted that, in order to avoid confusion, the folding lines shown in fig. 1 and 2 are only a part of the folding lines in the folding pattern, and not all the folding lines. For example, in the first region S1 and the third region S3, crease lines and the like for top sealing and bottom sealing are also designed, respectively. In addition, depending on the actual design requirements, the packaging sheet 1 may also be designed with an opening region for forming a suction or pouring opening, with particular reference to the design of existing similar products, which are not shown here.

Fig. 3 is a schematic structural diagram of a packaging container provided in an embodiment of the present disclosure.

For example, as shown in fig. 1, 2 and 3, in the process of making the packaging container 100, first the first and second seam regions T1, T2 of the packaging web 1 of fig. 1 are joined to each other to form the flat packaging sleeve 10 of fig. 2. The packaging sleeve 10 of fig. 2 is then unfolded to form a three-dimensional packaging sleeve 10 and the bottom opening 10B is folded and sealed. Next, the liquid food is filled in several times from the open top opening 10A, and after the liquid is filled, the top opening 10A is sealed, and finally the packaging container 100 filled with the liquid food of fig. 3 is formed.

For example, as shown in fig. 3, the packaging container 100 is formed from a packaging precursor (e.g. packaging sheet 1 or packaging sleeve 10), the packaging container 100 comprising: a top surface 101, a bottom surface 103, and a side surface 102 extending between the top surface 101 and the bottom surface 103. As described above, the packaging container 100 is provided with a plurality of bonding portions, i.e., bonding portion one CT101, bonding portion two CT102, bonding portion three CT103 and bonding portion four CT104, which are distributed on the top surface 101, the bottom surface 103 and the side surface 102.

For example, the method for manufacturing the packaging container 100 provided by the embodiment of the present disclosure includes:

step S10: forming a bond (e.g., bond one CT101 to bond four CT 104), wherein forming the bond comprises: the bonding is achieved by illuminating the pre-bonded structure on the packaging precursor, e.g. the packaging sheet 1 or the packaging sleeve 10, such that at least part of the pre-bonded structure is melted by heating. That is, the pre-bonding structure is irradiated with a light beam such as laser light or infrared light so that at least a part of the pre-bonding structure is melted by heat generated by the irradiation of the light beam, and after the melted part is solidified, a bonding portion is formed.

The above-mentioned pre-coupling structure can be largely classified into two types according to the structural characteristics of the packaging container 100 itself:

the first type is the bonding between the packaging sheet and the packaging sheet, for example, bonding portion one CT101, bonding portion two CT102, and bonding portion three CT103 in the packaging container 100 are the bonding between the multi-layer packaging sheets, and the multi-layer packaging sheets are hereinafter referred to as a first pre-bonded structure;

the second type is the bonding between the packaging sheet and the bonding member (e.g., straw and its set, lid, etc.), for example, the bonding portion four CT104 in the packaging container 100 is the bonding between the packaging sheet and the straw sleeve, and the packaging sheet and the bonding member are hereinafter referred to as a second pre-bonding structure.

The two types of prebond structures and the method of forming a bond by the two types of prebond structures will be described below.

Fig. 4 is a schematic view of illumination of a first pre-bonding structure according to an embodiment of the disclosure. As shown in fig. 4, for example, the first pre-bond structure ST1 includes a multi-layer packaging sheet 1 (e.g., two layers as shown in the figure) disposed in a stack.

In the manufacturing method of the embodiment of the present disclosure, when the pre-bonding structure is the first pre-bonding structure ST1, the multilayer packaging sheet 1 is brought into contact with each other in the thickness direction (for example, the Z direction shown in the drawing) of the packaging sheet 1 to form a sheet contact portion (for example, one first sheet contact portion M1 shown in the drawing); at this time, illuminating the pre-bonding structure in the above step S10 includes: the multilayer packaging sheet 1 is illuminated so that part or all of the first sheet contacting portion M1 is melted by heat, thereby bonding the multilayer packaging sheets 1 to each other.

For example, as shown in fig. 4, the multilayer packaging sheet 1 includes a first side SD1 and a second side SD2 opposed to each other in the Z direction. When the bonding portion is formed using the first pre-bonding structure ST1, at least one of the first side SD1 and the second side SD2 may be irradiated with a light beam.

For example, in the three laser irradiation processes, the first light beam L1 is used to irradiate only the first side SD1 of the multilayer packaging sheet 1, the second light beam L2 is used to irradiate only the second side SD2 of the multilayer packaging sheet 1, or the first light beam L1 and the second light beam L2 are used to irradiate the first side SD1 and the second side SD2 respectively, the opaque paperboard layer 14 is heated by the laser, the paperboard layer 14 transfers heat to other layers adjacent to the paperboard layer 14, when the heat is transferred to the inner layer 11, the first sheet contact part M1 is partially or completely heated and melted, and the melted first sheet contact part M1 is solidified to complete the bonding, so as to form the bonding part. Herein, "melting" refers to the change of a material from a solid state to a liquid state under the action of irradiation of a light beam. The outer layer 15 may also have some, but not obvious, sign of melting.

The disclosed embodiments do not limit the direction of illumination. For example, in fig. 4, the first light beam L1 and the second light beam L2 are incident on the outer layer 15 in an oblique incidence manner, in other embodiments, the first light beam L1 and the second light beam L2 may also be incident in a perpendicular incidence manner, that is, incident on the outer layer 15 along the Z direction, which is not limited in the embodiment of the present disclosure.

In the disclosed embodiment, the packaging sheet 1 comprises, for example, a plurality of functional layers laminated in the Z-direction, such as an inner layer 11, a barrier layer 12, an adhesive layer 13, a cardboard layer 14 and an outer layer 15. The inner layer 11 faces the inside of the packaging container 100 and the outer layer 15 faces the outside of the packaging container 100. The inner layer 11 and the outer layer 15 have water and oxygen blocking functions. The barrier layer 12 has a light blocking effect. The paperboard layer 14 provides support for the packaging sheet 1. The adhesive layer 13 functions as an adhesive. It will be appreciated that the layers of the packaging sheet 1 in fig. 4 are merely illustrative and that in other embodiments, other functional layers may be included.

In some embodiments, the inner layer 11 comprises a polyethylene material (PE) consisting of a plurality of materials, for example 90 wt% LDPE 19N430 from Ineos and 10wt% mPE Affinity PT 1451 from dow chemical company, germany, wherein the LDPE is low density polyethylene and the mPE is metallocene polyethylene.

In some embodiments, the barrier layer 12 may or may not include aluminum, which may reduce cost and provide better light blocking properties; when aluminum is not included, environmental protection and material recycling are facilitated. For example, the barrier layer 12 comprises Aluminium EN AW 8079 from Hydro Aluminium Deutschland GmbH.

In some embodiments, adhesive layer 13 comprises a plastic suitable for creating a strong bond by forming an ionic or covalent bond with the surface of the respective adjacent layer by functionalization with suitable functional groups. Preferred such functionalized polyolefins are obtained by copolymerization of ethylene with acrylic acids, such as acrylic acid, methacrylic acid, crotonic acid, acrylic esters, acrylic ester derivatives or carboxylic acids and hydrides with double bonds, such as maleic anhydride, or at least two of these. Of these, polyethylene-maleic anhydride graft polymer (EMAH), ethylene-acrylic acid copolymer (EAA) or ethylene-methacrylic acid copolymer (EMAA) are preferred, for example, being of the type Bynel and Nucrel 0609HSA from DuPont, or Escor 6000ExCo from England Mobil.

In some embodiments, the paperboard layer 14 imparts dimensional stability to the packaging container, and the paperboard layer is typically of a single or multi-layer construction, for example, paperboard layer 14 is a Stora Enso Natura T Duplex coating from fenlanstand raynold.

In some embodiments, the outer layer 15 comprises a polyethylene material, such as LDPE 19N430 from Ineos GmbH, germany (lneos). The first pre-bonded structure ST1 includes two packaging sheets 1 as an example, and it is understood that the first pre-bonded structure ST1 includes more than two packaging sheets 1 (for example, three or more layers, etc.), in which case the number of the first sheet contacting portions M1 may be more than one.

The embodiment of the present disclosure is described by taking the example that the first sheet contacting portion M1 includes two inner layers 11, and it is understood that the first sheet contacting portion M1 may further include at least two of the two inner layers and the two outer layers. For example, when any one of the packaging sheets 1 in fig. 4 is inverted, the first sheet contact portion M1 includes an inner layer 11 and an outer layer 15; the first sheet contacting portion M1 may also comprise two outer layers 15 when the two packaging sheets 1 are inverted.

In the disclosed embodiment, the two layers of packaging sheet material 1 overlap each other in the Z-direction to form an overlapping area in which the first sheet material contact portion M1 is located.

In addition to the illumination means described above, the multilayer packaging sheet may be illuminated by other illumination means to melt some or all of the sheet contacting portions by heat.

Fig. 5 is another illumination diagram of a first pre-bonded structure according to an embodiment of the disclosure. In fig. 5, the third light beam L3 and the fourth light beam L4 directly irradiate the sheet contacting portions of the two packaging sheets 1, i.e., the second sheet contacting portion M2 and the third sheet contacting portion M3, respectively, so as to melt the second sheet contacting portion M2 and the third sheet contacting portion M3, and the second sheet contacting portion M2 and the third sheet contacting portion M3 to be melted contact with each other and are solidified to realize bonding.

For example, in the illumination mode of fig. 5, two packaging sheets in a separated state are irradiated and then bonded to each other, whereas in the illumination mode of fig. 4, two packaging sheets are bonded together and then irradiated. From the test results, the mode shown in fig. 4 can transfer more heat to the sheet material contact part, so that the bonding strength of the bonding part is higher and the sealing performance is better. Therefore, the illumination mode of fig. 4 is preferable.

Fig. 6 is a schematic structural diagram of a second pre-bonding structure according to an embodiment of the disclosure. As shown in fig. 6, for example, the second pre-bonding structure ST2 includes a packaging sheet 1 and a bonding member 3 configured to be bonded to the packaging sheet 1.

In the manufacturing method of the embodiment of the present disclosure, when the pre-bonding structure is the second pre-bonding structure ST2, the packaging sheet 1 and the bonding member 3 are in contact with each other in the thickness direction (for example, the Z direction shown in the drawing) of the packaging sheet 1 to form the sheet member contact portion N. At this time, illuminating the pre-bonding structure in the above step S10 includes: at least one of the packaging sheet 1 and the bonding member 3 is illuminated to heat and melt part or all of the sheet member contact portion N, thereby bonding the bonding member 3 and the packaging sheet 1 to each other.

For example, the bonding member 3 includes, but is not limited to: a cover used for being detachably connected with the packaging container or a pipe sleeve outside the suction pipe, etc. As shown in fig. 6, the coupling member 3 is farther from the contents in the packaging container 100 than the packaging sheet 1 in the Z direction.

In the manufacturing method of the embodiment of the present disclosure, when the pre-bonding structure is the second pre-bonding structure ST2, the step S10 includes:

step S102: illuminating the second pre-bonding structure ST2, wherein illuminating the second pre-bonding structure ST2 comprises: at least one of the packaging sheet 1 and the bonding member 3 is illuminated.

For example, the packaging sheet 1, or the bonding means 3, or both the packaging sheet 1 and the bonding means 3 may be illuminated. When both the packaging sheet 1 and the bonding member 3 are illuminated, the adhesiveness of the sheet member contact portion N can be enhanced, and thus is preferable.

As shown in fig. 6, for example, the second pre-bonding structure ST2 includes a first side SD3 and a second side SD4 opposite to each other in the Z direction. When the bonding portion is formed using the second pre-bonding structure ST2, at least one of the first side SD3 and the second side SD4 may be irradiated with a light beam.

For example, only the first side SD3 of the second pre-bonding structure ST2 is irradiated with the first light beam L1, or only the second side SD4 of the second pre-bonding structure ST2 is irradiated with the second light beam L2, or the first side SD3 and the second side SD4 are irradiated with the first light beam L1 and the second light beam L2, respectively.

In fig. 6, the joining member 3 and the packaging sheet 1 may be irradiated with light as shown in fig. 5, for example, by irradiating the joining member 3 and the sheet member contact portion on the packaging sheet 1 first and then joining them. For example, the sheet member contact portion of the packaging sheet 1 is irradiated, and the packaging sheet 1 is bonded to the bonding member 3.

In the embodiment of the present disclosure, the first light beam L1 and the second light beam L2 are, for example, laser beams. The absorption of a laser beam by a material depends on the material (surface shape, color) and the laser wavelength: the more absorbent the material, the more advantageous the heating efficiency and the heating time. Repeated tests of the inventor find that when the selected laser beam is a laser with the wavelength of 1000-1100 nm, for example, a laser with the wavelength of 1064nm, the packaging sheet has good absorption efficiency on the laser, and the surface of a packaging product cannot be damaged. For example, the laser light irradiation time is 0.1 to 10 seconds, preferably 1 to 5 seconds, and more preferably 1 to 3 seconds.

In selecting an appropriate laser beam for the packaging sheet, the inventors have tested several lasers:

1) CO2 laser: the wavelength is 10.6 μm. The laser obtains wavelengths of lambda =9.3 μm and 10.2 μm (mainly for obtaining better absorption of the material) by adjusting the gas composition, and most of the non-metallic materials or the oxidized materials can adopt a CO2 laser.

2) An ultraviolet laser: the wavelength is 355nm.

3) Fiber laser: at a wavelength of 1064nm, fiber lasers are also solid-state lasers. The pumping medium is a clad fiber.

Through a great deal of experiments, the inventor finds that the laser with the wavelength of 10.6 μm can directly carbonize and burn the film layer and the paper layer of the product, although the appearance of the packing box can not meet the requirement. The laser light having a wavelength of 355nm is a cold laser light and has substantially no heat. For laser with the wavelength of 1064nm, the laser is preferably used because the laser has the highest absorption efficiency and the fastest heating speed after process debugging, and does not damage the surface of the packaging sheet.

In the embodiment of the present disclosure, the layer structures of the first pre-bonding structure ST1 and the second pre-bonding structure ST2 shown in fig. 4 to 6 are only schematic, and other layer structures may be provided, for example, the first pre-bonding structure ST1 includes three layers and more than three packaging sheets, and the second pre-bonding structure ST2 includes two layers and more than two packaging sheets.

In a conventional method for manufacturing a packaging container, heating is generally performed by injecting hot air (hot air for short) to a packaging sheet, and the heating time is long, which results in low production efficiency.

In the embodiment of the disclosure, at least part of the first pre-bonding structures ST1 or at least part of the second pre-bonding structures ST2 are heated and melted by adopting a light beam irradiation manner, so that on one hand, the manufacturing time of the packaging container is greatly shortened, the yield in unit time is improved, and the production efficiency is improved; on the other hand, because the heating area of the hot air heating mode is not easy to control, the heated shape is poor, and the heating area of the beam heating mode is more regular, the heating process becomes more controllable, and the further process optimization is facilitated; on the other hand, the light beam intensity or the illumination time can be set according to actual needs, and the requirements on different types of combination structures can be met more flexibly.

In the disclosed embodiment, the shape of the packaging container may be various, such as flat-topped (fig. 3), slanted-topped (fig. 9), or gable-topped (fig. 10).

The formation of the respective bonding portions on the flat top-shaped packaging container 100 shown in fig. 3 will be described below.

As shown in fig. 2, for example, the packing sleeve 10 includes a top opening 10A and a bottom opening 10B opposite to each other in the Y direction, and each of the top opening 10A and the bottom opening 10B may form an end opening pre-coupling structure, which is the aforementioned first pre-coupling structure. For example, the open-top pre-bonded structure of the top opening 10A is folded from the packaging sheet 1 in the top sealing area S11, which includes two layers of the packaging sheet 1, such as the first pre-bonded structure ST1 shown in fig. 4. Similarly, the open-ended pre-bond structure of the bottom opening 10B is folded from the packaging sheet 1 in the bottom sealing area S31, which comprises two layers of packaging sheet 1, for example the first pre-bond structure ST1 shown in fig. 4.

As shown in fig. 3, for example, the packaging container 100 further comprises a top seal 111 and a bottom seal (not shown) opposite to each other in the Y-direction, the top seal 111 being located at the top surface 101 and formed by the top opening 10A, the bottom seal being located at the bottom surface 103 and formed by the bottom opening 10B. For example, the top seal 111 includes a joint-CT 101 (i.e., a first joint), and the bottom seal also includes a joint (i.e., a first joint, not shown).

Referring to fig. 2 and 3, in the method of manufacturing the packaging container 100 according to the embodiment of the present disclosure, step S10 includes:

step S111: a bond-CT 101 of the top seal 111 and a bond of the bottom seal are formed, wherein the respective end opening pre-bond structures (i.e., the first pre-bond structure ST 1) of the top opening 10A and the bottom opening 10B are illuminated such that at least a portion of the end opening pre-bond structures are melted by the heat to form the bond-CT 101 of the top seal 111 and the bond of the bottom seal, respectively, thereby forming the top seal 111 and the bottom seal.

For example, referring to FIG. 3, a top seal 111 is illustrated. After the two packaging sheets 1 of the first pre-bonding structure ST1 of the top seal 111 are irradiated with the light beam, the first sheet contact portion M1 of the two packaging sheets 1 is melted by heat, so that the two packaging sheets 1 are bonded to each other to form a bonding portion-CT 101 of fig. 3, thereby forming the top seal 111. The process of forming the bottom seal may be referred to as top seal 111 and will not be repeated here.

In the embodiments of the present disclosure, the top opening and the bottom opening each include an end opening pre-bonding structure, and the top seal and the bottom seal each include a bonding portion, it is understood that in other embodiments, one of the top opening and the bottom opening may include an end opening pre-bonding structure, and the top seal or the bottom seal corresponding to the one of the top opening and the bottom opening may include a bonding portion.

In the existing forming process of the top seal or the bottom seal, a hot air injection mode is generally adopted for heating, and the heating time is long, so that the production efficiency is low.

In the disclosed embodiment, the bonding is achieved by irradiating the open-top or open-bottom open-ended pre-bonded structure with light, such as laser light or infrared light, to heat melt at least a portion of the open-top pre-bonded structure. On one hand, the forming time of the end seal is greatly shortened, and the production efficiency is improved; on the other hand, because the heating area of the hot air heating mode is not easy to control, the heated shape is poor, and the heating area of the light beam heating mode is more regular, the heating process becomes more controllable, and the further process optimization is facilitated.

As shown in fig. 1, for example, the packaging sheet 1 further comprises two end portions opposite to each other in the X direction, namely a first end portion D1 and a second end portion D2 (located in the first seam region T1 and the second seam region T2, respectively). The first and second end portions D1 and D2 may overlap each other in the Z direction to form a side-port pre-bonded structure, which is the aforementioned first pre-bonded structure.

Fig. 7 is a schematic cross-sectional view of a side seal of a packaging sheet provided by embodiments of the present disclosure. Fig. 8 is a schematic structural diagram of the first prebond structure in fig. 7.

As shown in fig. 7 and 8, for example, the first end D1 and the second end D2 of the packaging sheet 1 are overlapped with each other in the Z-direction to form a first pre-bonded structure ST1 comprising a three-layer packaging sheet 1, the three-layer packaging sheet 1 comprising two first sheet contact portions M1, one of the first sheet contact portions M1 comprising two inner layers 11 and the other first sheet contact portion M1 comprising two outer layers 15.

As shown in fig. 2, the packaging sleeve 10 further comprises a side seal 112 (not shown in fig. 2) extending in the Y-direction from the bottom opening 10B to the top opening 10A, the side seal 112 being located on the side surface 102 of the packaging container 100. Side seal 112 includes a second junction 102 (i.e., a second junction).

Referring to fig. 1 to 3, in the manufacturing method of the packaging container 100 according to the embodiment of the present disclosure, step S10 further includes:

step S112: a second junction CT102 is formed, wherein the side-port pre-junction structure formed by the first and second ends D1 and D2 (i.e., the first pre-junction structure) is irradiated to heat and melt at least a portion of the side-port pre-junction structure, so as to form the second junction CT102, thereby forming the side seal 112.

For example, when the three-layer packaging sheet 1 is irradiated with a light beam, two sheet contact portions of the three-layer packaging sheet 1 are heated and melted, so that the three-layer packaging sheets 1 are bonded to each other to form a bonded portion two CT102 in fig. 3, thereby forming the side seal 112.

In the disclosed embodiment, the bonding is achieved by irradiating the first pre-bonded structure of the side opening with a light beam such as laser light or infrared light to melt at least a part of the first pre-bonded structure by heating. On one hand, the forming time of the side seal is greatly shortened, and the production efficiency is improved; on the other hand, the shape of the beam heating area is more regular, so that the heating process is more controllable, and further process optimization is facilitated.

As shown in fig. 3, for example, the packaging container 100 further comprises an ear flap 113 located on the side surface 102, the top seal 111 extends from the top surface 101 to the side surface 102 to form the ear flap 113, and the ear flap 113 and the side surface 102 constitute an ear flap pre-bond structure, which is the aforementioned first pre-bond structure.

Since the ear flap 113 is formed by bending the top seal 111, the ear flap 113 comprises at least two layers of packaging sheet material 1. For example, the first pre-bonded structure comprises one layer of packaging sheet 1 in side surface 102 and one layer of packaging sheet 1 in ear flap 113, and the sheet contacting portion in the two layers of packaging sheet 1 comprises two outer layers.

Referring to fig. 3, the side surface 102 includes a third joint portion (i.e., a third joint portion) 103, and in the manufacturing method of the packaging container 100 provided by the embodiment of the present disclosure, the step S10 further includes:

step S113: a junction three CT103 is formed in which the earflap pre-junction structure formed by the earflap 113 and the side surface 102 is illuminated to form the junction three CT103, thereby joining the earflap 113 and the side surface 102 to each other.

For example, when the two-layer packaging sheet 1 is irradiated with laser light, the sheet contact portion is melted by heat, so that the ear flap 113 and the side surface 102 are bonded to each other to form a bonding portion two CT102 in fig. 3, thereby achieving bonding between the ear flap 113 and the side surface 102.

In the disclosed embodiment, the bonding is achieved by irradiating the earflap pre-bonding structure formed by the earflap and the side surface with light such as laser or infrared light to heat and melt at least a portion of the earflap pre-bonding structure. On one hand, the time for combining the ear wing and the side surface is greatly shortened, and the production efficiency is improved; on the other hand, the shape of the beam heating area is more regular, so that the heating process is more controllable, and further process optimization is facilitated.

As shown in fig. 3, for example, the packaging container 100 further includes a straw assembly located on the side surface 102, the straw assembly includes a straw and a straw sleeve 114 covering the straw, and the side surface 102 and the straw sleeve 114 form a straw sleeve pre-combination structure, which is the second pre-combination structure. This second pre-bonding structure is for example the second pre-bonding structure ST2 shown in fig. 6, wherein the tube sleeve 114 is the bonding part 3 and the side surface 102 comprises one layer of the packaging sheet 1.

Referring to fig. 3, the side surface 102 further includes a joint portion four CT104 (i.e., a fifth joint portion), and in the manufacturing method of the packaging container 100 provided by the embodiment of the present disclosure, the step S10 further includes:

step S114: a joint four CT104 is formed in which light is irradiated to constitute a socket pre-joint structure by the side surface 102 and the socket 114 to form the joint four CT104, thereby bonding the socket 114 and the side surface 102 to each other.

For example, when at least one of the tube cover 114 and the packaging sheet 1 is irradiated with laser light, the sheet member contact portion is heated and melted, so that the tube cover 114 and the side surface 102 are bonded to each other to form a bonded portion three CT103 in fig. 3, thereby achieving bonding between the tube cover 114 and the side surface 102.

In the embodiments of the present disclosure, the pipe sleeve pre-bonding structure formed by the side surface and the pipe sleeve is irradiated with light such as laser or infrared ray, and at least a part of the pipe sleeve pre-bonding structure is heated and melted, thereby achieving bonding. On one hand, the time for combining the side surface and the pipe sleeve is greatly shortened, and the production efficiency is improved; on the other hand, the shape of the beam heating area is more regular, so that the heating process is more controllable, and further process optimization is facilitated.

Fig. 9 is a schematic structural view of another packaging container provided in the embodiments of the present disclosure. The formation of each joint on the slant-top packaging container 200 shown in fig. 9 will be described below.

As shown in fig. 9, the packaging container 200 is formed from a packaging precursor (including a packaging sheet or a packaging sleeve), the packaging container 200 including: a top surface 201, a bottom surface 203, a side surface 202 extending between the top surface 201 and the bottom surface 203. As described above, the packaging container 200 is provided with a plurality of bonding portions, i.e., bonding portion one CT201, bonding portion two CT202, bonding portion three CT203, and bonding portion four CT204, which are distributed on the top surface 201, the bottom surface 203, and the side surface 202.

For example, the method for manufacturing the packaging container 200 provided by the embodiment of the present disclosure includes:

step S20: the bonds (e.g., bond one CT201 to bond four CT204, wherein forming the bonds comprises packaging the pre-bonds on the precursor (similar to packaging sheet 1 or packaging sleeve 10, but used to form the packaging container 200) by light irradiation so that at least a portion of the pre-bonds are melted by heat to achieve bonding.

In the joint one CT201 to the joint four CT204, the joint one CT201, the joint two CT202, and the joint three CT203 are formed by a first pre-bonded structure including a multi-layer packaging sheet, and the joint four CT204 is formed by a second pre-bonded structure including a packaging sheet and a bonding member.

Referring to fig. 2 and 9, in the method of manufacturing the packaging container 200 provided in the embodiment of the present disclosure, step S20 includes:

step S211: a bond-CT 201 forming the top closure 211 and a bond forming the bottom closure, wherein light is used to form an end opening pre-bond structure of each of the top opening and the bottom opening of the packaging sleeve of the packaging container 200 such that at least a portion of said end opening pre-bond structure is melted by the heat, the end opening pre-bond structure being a first pre-bond structure to form the bond-CT 201 forming the top closure 211 and the bond forming the bottom closure 211, respectively, to form the top closure 211 and the bottom closure.

In the embodiment of the present disclosure, the specific forming process of the joint-CT 201 may refer to the forming process of the joint-CT 101 of the packaging container 100, which is not described herein again.

In the disclosed embodiment, the bonding is achieved by irradiating the open-top or open-bottom open-ended pre-bonded structure with light, such as laser light or infrared light, to heat melt at least a portion of the open-top pre-bonded structure. On one hand, the forming time of the end opening is greatly shortened, and the production efficiency is improved; on the other hand, because the heating area of the hot air heating mode is not easy to control, the heated shape is poor, and the heating area under the laser heating mode is more regular, the heating process becomes more controllable, and the process optimization is further facilitated.

Referring to fig. 1 and 9, in the method for manufacturing the packaging container 200 according to the embodiment of the present disclosure, step S20 further includes:

step S212: a second joint CT202 is formed, in which the side-port pre-bonds formed by both end portions of the packaging sheet (see packaging sheet 1 of fig. 1), which is the first pre-bond, are illuminated to melt at least part of the side-port pre-bonds by heat, to form the second joint CT202, thereby forming a side seal 212.

In the embodiment of the present disclosure, the specific forming process of the second joint CT202 may refer to the forming process of the second joint CT102 of the packaging container 100, and is not described herein again.

In the disclosed embodiment, the side seal 212 is located on the side surface 202 of the packaging container 200. The bonding is achieved by irradiating the side-ported open pre-bonded structure with light such as laser light or infrared light to heat and melt at least a part of the side-ported pre-bonded structure. On one hand, the forming time of the side seal is greatly shortened, and the production efficiency is improved; on the other hand, the shape of the beam heating area is more regular, so that the heating process is more controllable, and further process optimization is facilitated.

As shown in fig. 9, for example, the packaging container 200 further includes an ear flap 213 located on the side surface 202, the top seal 211 extends from the top surface 201 to the side surface 202 to form the ear flap 213, and the ear flap 213 and the side surface 202 constitute an ear flap pre-bonding structure, which is the aforementioned first pre-bonding structure. Since the ear flap 213 is folded from the top seal 211, the ear flap 213 comprises at least two layers of packaging sheet material.

Referring to fig. 9, the side surface 202 includes a joint portion three CT203, and in the method for manufacturing the packaging container 200 according to the embodiment of the present disclosure, the step S20 further includes:

step S213: a junction three CT203 is formed in which the ear-wing pre-bonded structure formed by the ear wing 213 and the side surface 202 is illuminated to melt at least a part of the ear-wing pre-bonded structure by heat to form a junction three CT203, thereby bonding the ear wing 213 and the side surface 202 to each other.

In the embodiment of the present disclosure, the specific forming process of the three connecting portions CT203 may refer to the forming process of the three connecting portions CT103 of the packaging container 100, and will not be described herein again.

In the disclosed embodiment, the bonding between the ear flap and the side surface is achieved by irradiating the ear flap pre-bonded structure formed by the ear flap and the side surface with light such as laser or infrared ray to melt at least a part of the ear flap pre-bonded structure by heating. On one hand, the time for combining the ear wing and the side surface is greatly shortened, and the production efficiency is improved; on the other hand, the shape of the beam heating area is more regular, so that the heating process is more controllable, and further process optimization is facilitated.

As shown in fig. 9, for example, the packaging container 200 further includes a flow guide member 214, and the flow guide member 214 is configured to be coupled to the top surface 201 of the packaging container 200 and guide the contents of the packaging container 200 out.

For example, in a direction perpendicular to the extension of the top closure 211, the top closure 211 includes two

sides

211a, 211b opposite to each other (e.g., left and right sides of the top closure 211 as shown in the figures), and the flow guide 214 is located on one of the two

sides

211a, 211b, as shown on the 211a side. The top surface 201 and the flow directing feature 214 form a flow directing pre-bond that is the second pre-bond described above. For example, the second pre-bonding structure is a second pre-bonding structure ST2 shown in fig. 6.

Referring to fig. 9, the top surface 201 includes a bonding portion four CT204 (i.e., a fourth bonding portion), and in the method for manufacturing the packaging container 200 provided by the embodiment of the present disclosure, the step S20 further includes:

step S214: a bonding portion four CT204 is formed, in which the flow guide pre-bonding structure formed by the top surface 201 and the flow guide part 214 is illuminated to heat and melt at least a portion of the flow guide pre-bonding structure to form the bonding portion four CT204, thereby bonding the flow guide part 214 and the top surface 201 to each other.

For example, at least one of the guide member 214 and the packaging sheet, for example, an outer layer of the packaging sheet, may be irradiated with the second light beam L2, so that a portion of the packaging sheet is melted by heating to form the joint portion four CT204, thereby joining the guide member 214 and the packaging sheet to each other.

In the embodiment of the present disclosure, the flow guide pre-bonding structure formed by the flow guide member and the top surface is irradiated with light such as laser or infrared ray, so that at least a part of the flow guide pre-bonding structure is melted by heating, thereby achieving bonding between the flow guide member and the top surface. On one hand, the time for combining the flow guide part and the top surface is greatly shortened, and the production efficiency is improved; on the other hand, the shape of the beam heating area is more regular, so that the heating process is more controllable, and further process optimization is facilitated.

Fig. 10 is a schematic structural view of another packaging container provided in the embodiment of the present disclosure. The following describes a process of forming each joint on the gable top packaging container 300 shown in fig. 10.

As shown in fig. 10, the packaging container 300 is formed from a packaging precursor (including a packaging sheet or a packaging sleeve), the packaging container 300 comprising: a top surface 301, a bottom surface 303, and a side surface 302 extending between the top surface 301 and the bottom surface 303. As described above, the packaging container 300 is provided with a plurality of joints, i.e., a joint one CT301, a joint two CT302, a joint three CT303, a joint four CT304, and a joint five CT305, which are distributed on the top surface 301, the bottom surface 303, and the side surface 302.

For example, the method for manufacturing the packaging container 300 provided by the embodiment of the present disclosure includes:

step S30: forming a bond (e.g., bond one CT301 to bond five CT 305), wherein forming the bond comprises: the bonding is achieved by illuminating the pre-bonded structure on the packaging precursor (similar to packaging sheet 1 or packaging sleeve 10, but used to form the packaging container 300) such that at least part of the pre-bonded structure is melted by the heat. That is, the pre-bonding structure is first irradiated with a light beam such as laser light or infrared light so that at least a part of the pre-bonding structure is melted by heat generated by the irradiation of the light beam, and after the melted part is solidified, a bonding portion is formed.

Among the joints one CT301 to five CT305, the joint two CT302, the joint three CT303, the joint four CT304, and the joint five CT305 are formed by a first pre-joint structure including a multi-layer packaging sheet, and the joint one CT301 is formed by a second pre-joint structure including a packaging sheet and a joint member.

For example, the packaging sleeve for forming the packaging container 300 includes a top opening and a bottom opening opposite to each other in the X direction (refer to the top opening and the bottom opening of the packaging sleeve 10 of fig. 2 except that the top opening of the packaging container 300 is different in shape and size from the top opening of the packaging container 200 for the purpose of combining with the flow guide member);

for example, the packaging container 300 further includes a flow guide member 314, the flow guide member 314 being configured to be coupled to the top surface 301 of the packaging container 300 and to guide or pour the contents of the packaging container 300 out of the packaging container 300, wherein the top opening and the flow guide member 314 form a flow guide pre-coupled structure, which is the aforementioned second pre-coupled structure.

Fig. 11 is a schematic structural view of a flow guide member according to an embodiment of the present disclosure. As shown in fig. 11, for example, the flow guide member 314 includes a tubular portion 314a and a boss portion 314b connected to the tubular portion 314a, the boss portion 314b being adapted to be connected to the top opening. The boss portion 314b forms a second pre-bond structure ST2 shown in fig. 6 with the packaging sheet at the top opening.

For example, the packaging container 300 further comprises a lid (not shown), to which the tubular portion 314a is detachably connected to form the sealed packaging container 300.

As shown in fig. 10, the top surface 301 further includes a bonding portion-CT 301 (i.e., a sixth bonding portion), and in the method for manufacturing the packaging container 300 provided in the embodiment of the present disclosure, the step S30 includes:

step S311: a joining portion-CT 301 is formed, in which the flow guiding pre-joining structure formed by the top opening and the boss portion 314b is illuminated to heat and melt at least part of the flow guiding pre-joining structure, so that the boss portion 314b and the top opening are joined to each other.

For example, referring to fig. 6, at least one of the boss portion 314b and the packaging sheet at the top opening, for example, an outer layer of the packaging sheet, may be irradiated with the second light beam L2, so that a portion of the packaging sheet is melted by heat to form a bonding portion-CT 301, thereby bonding the boss portion 314b and the packaging sheet to each other.

In the embodiment of the present disclosure, the flow guide pre-bonding structure formed by the flow guide member and the top opening is irradiated with light such as laser or infrared ray, so that at least a part of the flow guide pre-bonding structure is heated and melted, thereby achieving bonding between the flow guide member and the top opening. On one hand, the time for combining the flow guide part and the top opening is greatly shortened, and the production efficiency is improved; on the other hand, the shape of the beam heating area is more regular, so that the heating process is more controllable, and further process optimization is facilitated.

Referring to fig. 1 and 10, in the method for manufacturing the packaging container 300 according to the embodiment of the present disclosure, step S30 further includes:

step S312: a second bond CT302 is formed in which the side-port pre-bonds formed by both ends of the packaging sheet (see, for example, packaging sheet 1 of fig. 1), which is the first pre-bond, are illuminated to melt at least part of the side-port pre-bonds by heat, to form the second bond CT302, thereby forming the side seal 312.

In the embodiment of the present disclosure, the specific forming process of the second joint CT302 may refer to the forming process of the second joint CT102 of the packaging container 100, and is not described herein again.

In the disclosed embodiment, the side seal 312 is located on the side surface 302 of the packaging container 300. The bonding is achieved by irradiating the side-ported open pre-bonded structure with light such as laser light or infrared light to heat and melt at least a part of the side-ported pre-bonded structure. On one hand, the forming time of the side seal is greatly shortened, and the production efficiency is improved; on the other hand, the shape of the beam heating area is more regular, so that the heating process is more controllable, and further process optimization is facilitated.

As shown in fig. 10, for example, the top surface 301 has a mountain top shape, the top surface 301 includes an inclined surface 316 and an ear wing 313 extending to the inclined surface 316, the ear wing 313 and the inclined surface 316 form a top opening pre-coupling structure, which is the aforementioned first pre-coupling structure; since the ear flap 313 is folded from the top surface 301, the ear flap 313 comprises at least two layers of packaging sheet material.

Referring to fig. 10, the top surface 301 further includes a third bonding portion CT303 (i.e., an eighth bonding portion), and in the method for manufacturing the packaging container 300 provided by the embodiment of the present disclosure, the step S30 further includes:

step S313: a junction three CT303 is formed in which the open-topped pre-bonded structure formed by the ear flap 313 and the inclined surface 316 is illuminated to melt at least a part of the open-topped pre-bonded structure by heat to form the junction three CT303, thereby bonding the ear flap 313 and the inclined surface 316 to each other.

In the embodiment of the present disclosure, the specific forming process of the joint three CT303 may refer to the forming process of the joint three CT103 of the packaging container 100, and is not described herein again.

In the disclosed embodiment, the top-opened pre-bonded structure formed by the ear flap and the inclined surface is irradiated with light such as laser or infrared ray, so that at least a part of the top-opened pre-bonded structure is melted by heating, thereby achieving bonding between the ear flap and the inclined surface. On one hand, the time for combining the ear wing and the inclined plane is greatly shortened, and the production efficiency is improved; on the other hand, the shape of the beam heating area is more regular, so that the heating process is more controllable, and further process optimization is facilitated.

For example, the bottom opening of the packaging sleeve (see the bottom opening 10B of the packaging sleeve 10 of fig. 2) used to form the packaging container 300 comprises a bottom opening pre-bond structure, which is the aforementioned first pre-bond structure, as shown in fig. 10, the packaging container 300 further comprises a bottom seal 315, the bottom seal 315 being located at the bottom surface 303.

Referring to fig. 10, the bottom surface 303 further includes a fourth joint portion CT304 (i.e., a seventh joint portion), and in the manufacturing method of the packaging container 300 provided by the embodiment of the present disclosure, the step S30 further includes:

step S314: including forming a junction four CT304, wherein the bottom open bottom pre-bonded structure is illuminated to cause at least a portion of the bottom open pre-bonded structure to be melted by heat to form the junction four CT304, thereby forming a bottom seal 315.

The detailed process of forming the bottom seal of the packaging container 300 can refer to the description of the bottom seal in the previous embodiment, and will not be repeated here.

In the embodiment of the present disclosure, the bottom-opening pre-bonding structure of the bottom opening is irradiated by light such as laser or infrared ray, so that at least part of the bottom-opening pre-bonding structure is melted by heating. On one hand, the time for forming the bottom seal is greatly shortened, and the production efficiency is improved; on the other hand, the shape of the beam heating area is more regular, so that the heating process is more controllable, and further process optimization is facilitated.

As shown in fig. 10, for example, the packaging container 300 further includes a tab 318 located on the bottom surface 303 of the packaging container 300 and formed by bending the bottom seal 315, wherein the tab 318 and the bottom surface 303 form a tab pre-bonding structure, and the tab pre-bonding structure is a first pre-bonding structure. For example, the first prebond structure includes more than three layers of packaging sheet material.

Referring to fig. 10, the bottom surface 303 further includes a joint portion five CT305, and in the method for manufacturing the packaging container 300 according to the embodiment of the present disclosure, the step S30 further includes:

step S315: a joint five CT305 is formed in which the fin pre-bond structure formed by the fin 318 and the bottom surface 303 is illuminated to heat melt at least a portion of the fin pre-bond structure to form the joint five CT305, thereby bonding the fin 318 and the bottom surface 303 to each other.

In embodiments of the present disclosure, bonding is achieved by irradiating the tab pre-bond structure formed by the tab and the bottom surface with light, such as laser light or infrared light, to heat melt at least a portion of the tab pre-bond structure. On one hand, the time for combining the fins and the bottom surface is greatly shortened, and the production efficiency is improved; on the other hand, the shape of the beam heating area is more regular, so that the heating process is more controllable, and further process optimization is facilitated.

In the manufacturing method of the above-described embodiment of the present disclosure, the forming the joint portion further includes: compressing the pre-bonded structure. That is, when the joint is formed, an external force is applied to the first pre-joint structure or the second pre-joint structure to make the joint of the two more tight and firm. According to practical situations, the step of applying the external force can be performed at the same time of the illumination or after the illumination.

According to an embodiment of the present disclosure, there is also provided a packaging container manufactured by any one of the above manufacturing methods. Such as the

packaging container

100, 200 or 300 described above.

Since the manufacturing method shortens the manufacturing time of the packaging container and improves the yield per unit time and the production efficiency, the packaging container obtained by the manufacturing method also has the beneficial effects.

In the embodiment of the disclosure, when the beam is laser, the laser can be used to generate laser, and when the beam is infrared, the radiation source can be used to heat to generate infrared. Infrared heating is the object radiated by infrared rays, and after the object absorbs the infrared rays, the radiation energy is converted into heat energy to be heated, so that the infrared heating belongs to the heating in a heat radiation mode. The electrothermal conversion efficiency of infrared heating is higher, so that the production or manufacturing cost can be further reduced, and the energy loss is reduced.

To achieve infrared heating in a production process of a packaging container, embodiments of the present disclosure also provide an apparatus for manufacturing a packaging container, the apparatus including: a forming device and a heating device. The forming device comprises a forming rod, a sealing component and a packaging sleeve, wherein the sealing component is positioned at the tail end of the forming rod; the packaging sleeve is sleeved at the tail end of the forming rod and is provided with an end sheet which surrounds the periphery of the sealing component and is configured to be combined with the sealing component; a gap is left between the end sheet and the seal assembly. The heating device includes a heat radiation assembly, wherein the heat radiation assembly is disposed in the gap and configured to heat the end sheet and the sealing assembly in a heat radiation manner.

The above-described embodiment provides an apparatus for manufacturing a packaging container, in which the heat radiation member is provided in the gap between the end sheet and the sealing member, and the end sheet and the sealing member are heated by means of heat radiation, with the following advantages:

1) Compared with a hot air heating mode, the method is favorable for controlling the shape of the heating area by controlling the shape of the heat radiation area, so that the shape of the heating area is more controllable. Even if the packaging container has a more complicated structure, the shape, size, area, etc. of the heating region can be flexibly adjusted to ensure the heating effect.

2) Compared with a laser heating mode, the requirement for improving the existing equipment is reduced. Because the laser is typically generated by a laser, it takes time to study how to introduce a laser into a device for testing or debugging. The heat radiation assembly in the embodiment of the present application is convenient to install, and thus, the improvement requirement on the existing equipment can be reduced.

3) The heat radiation heating mode has high electric heat conversion efficiency and high heating speed, and only needs 0.5 to 5 seconds when the material is heated to a preset temperature (for example, about 200 ℃), so that the heating time is greatly shortened, and the productivity in unit time is improved.

In the embodiment disclosed in the present disclosure, the wavelength range of the infrared light is between 0.75 and 1000 micrometers. For example, the infrared spectrum can be divided into several bands: the near infrared region is 0.75 to 3.0 micrometers; 3.0 to 6.0 microns is a middle infrared region; the far infrared ray area is 6.0 to 15.0 micrometers; 15.0 to 1000 micrometers is an extremely far infrared region.

In the embodiments of the present disclosure, neither the packaging sheet nor the bonding member includes metal, i.e., aluminum is not included in the packaging sheet. On the one hand, the absorption efficiency of infrared rays can be improved because the absorption efficiency of the non-metallic material for the mid-infrared rays is higher. On the other hand, the environment friendliness can be improved, the recycling of the packaging container is facilitated, and the environmental pollution is reduced.

The present invention is illustrated by the following specific examples. Detailed descriptions of known functions and known components may be omitted in order to keep the following description of the embodiments of the present invention clear and concise. When any component of an embodiment of the present invention appears in more than one drawing, that component may be referred to by the same reference numeral in each drawing.

Fig. 12 is a partial structural schematic view of an apparatus for manufacturing a packaging container according to an embodiment of the present disclosure.

As shown in fig. 12, an apparatus 1000 for manufacturing a packaging container according to an embodiment of the present disclosure includes a molding device 400.

For example, molding apparatus 400 includes a molding rod 410, a sealing assembly 420, and a packaging sleeve 430. The packing sleeve 430 is fitted over the molding rod 410. For example, packaging sleeve 430 includes two end openings, namely, a first end opening 430A and a second end opening 430B, first end opening 430A and second end opening 430B are opposite to each other in the extending direction of packaging sleeve 430, and packaging sleeve 430 can be fitted over forming rod 410 through second end opening 430B.

For example, the molding device 400 may further include a rotating shaft 412, and the plurality of molding rods 410 are connected to the rotating shaft 412. When the rotating shaft 412 rotates (e.g., counterclockwise as shown), the forming rod 410 rotates in the same direction under the driving of the rotating shaft 412. During the rotation of the forming rod 410, the rotating shaft 412 may stop slightly at a position corresponding to the different devices to perform operations of applying a sealing component, heating or sealing, etc. to the packing sleeve 430.

For example, apparatus 1000 may further include an application device 440, wherein when shaping rod 410 is rotated to an application position corresponding to application device 440, a sealing assembly 420 is applied to the end of shaping rod 410 through first end opening 430A using application device 440, sealing assembly 420 being used in conjunction with packaging sleeve 430 to seal first end opening 430A.

Fig. 13 is a schematic structural view of a molded rod provided in an embodiment of the present disclosure. Fig. 14 is a schematic structural view of a sealing assembly and a packaging sleeve provided by an embodiment of the disclosure.

For example, the shaped rod 410 includes two ends opposite to each other in the axial direction (e.g., the Z1 direction shown in the figure) of the shaped rod 410, namely, an end one 410A and an end two 410B, wherein the end one 410A is far away from the rotation axis 412, and the end two 410B is close to the rotation axis 412. The sealing assembly 420 is applied to the end one 410A of the contoured rod 410 and is connected to the end one 410A.

For example, packaging sleeve 430 includes an end sheet 431 that surrounds seal assembly 420 and is used in conjunction with seal assembly 420. When the end sheet 431 is connected to the sealing assembly 420 along the dashed line shown in fig. 13, the first end opening 430A is sealed or sealed.

For example, as shown in fig. 12, the apparatus 1000 may further include a heat radiation assembly 450 for heating the end sheet 202 and the sealing assembly 420. For example, as shown in fig. 14, when the molding bar 410 is rotated to the heating position corresponding to the heat radiation member 450, the heat radiation member 450 is disposed in the gap 440G between the end sheet 431 and the sealing member 420 to heat the end sheet 202 and the sealing member 420 in a heat radiation manner.

Compared with the hot air heating mode, the heating energy transmission is higher in the heat radiation mode. Since the hot air is indirectly heated, it is necessary to transfer heat to the hot air first and then to the heating target. Most of the actual energy is lost as the hot air is blown away. The heat radiation heating method is a method in which most of heat is directly applied to a heating target by heat radiation. Although there is a loss due to reflection, the total energy loss is much smaller than that of the hot air heating method.

In order to implement the thermal radiation heating manner, the embodiment of the present disclosure provides three different forms of thermal radiation members, in which the thermal radiation member 500 of fig. 15 to 17 takes the form of an annular lamp tube, the thermal radiation member 600 of fig. 18 to 22B takes the form of a sheet-shaped radiator, and the thermal radiation member 700 of fig. 23 to 25 takes the form of a radiation filament. These three types of heat radiation members are explained below separately.

For example, as shown in fig. 14, the seal assembly 420 includes a flow guide member 421, and the flow guide member 421 includes a tubular portion 422 and a flange 423 connected to the tubular portion 422. For example, the tubular portion 422 may be used to divert or pour out liquid in the packaging container. The flange 423 is used for connection with the end sheet 431. For example, the sealing assembly 420 may further include a cap (not shown) detachably coupled to the flow guide 421, and the cap may be screw-coupled to the tubular portion 422 to facilitate repeated opening or closing of the packaging container.

Fig. 15 is a schematic structural view of a heat radiation assembly provided in an embodiment of the present disclosure. Fig. 16 is a schematic plan view of the heat radiation assembly of fig. 15.

For example, as shown in fig. 15, the heat radiation assembly 500 includes a heat radiation source, i.e., a lamp tube 510, the lamp tube 510 being configured to generate infrared rays to heat the end sheet 431 and the flange 423. For example, the lamp tube 510 is annular and includes a filament 511 and two terminals 512 connected to the filament. The two terminals 512 supply electric power to the filament 511, and when the filament 511 is energized, infrared radiation is generated due to its resistance heating, and the infrared radiation irradiates both the end sheet 431 and the flange 423 to achieve heating of both. By heating the end sheet 431 and the flange 423 using the lamp tube 510, the heating area can be concentrated, which is advantageous for melting the end sheet 431 and the flange 423 to make them combined more tightly and firmly.

For example, the filament 511 comprises a metal or alloy material, such as tungsten, iron-nickel, or nickel-chromium alloy, among others. The filament 511 is sealed in a glass envelope filled with an inert gas.

In some embodiments, the circular tube 510 has a diameter of about 8mm and a diameter of about 46mm. The test results show that the preset 200 ℃ can be reached when the heating time is 2 to 4 seconds.

For example, as shown in fig. 16, the flange 423 has a first orthographic projection on a plane perpendicular to the axial direction Z1 (e.g., the X1Y1 plane shown in fig. 14), the end sheet 431 has a second orthographic projection on the X1Y1 plane, and the first orthographic projection falls within the second orthographic projection; the heat radiation member 500 has a third orthographic projection on the X1Y1 plane, the third orthographic projection being located between the first orthographic projection and the second orthographic projection and surrounding the first orthographic projection. That is, in a radial direction R of shaped rod 410 (i.e., in the X1Y1 plane, in either direction emanating outwardly from the center of the shaped rod, the radial direction R being perpendicular to the Z1 direction), lamp tube 510 is located between packaging sleeve 430 and sealing assembly 420, and in particular between end sheet 431 and flange 423. In case the profiled rod 410 and the flow guiding means 421 are coaxially arranged, the radial direction R of the profiled rod 410 is also the radial direction of the tubular portion 422.

In this embodiment, by disposing the third orthographic projection of the heat radiation member 500 between the first orthographic projection of the flange 423 and the second orthographic projection of the end sheet 431, the infrared rays generated by the lamp tube 510 can be simultaneously radiated onto the flange 423 and the end sheet 431 to achieve simultaneous heating, not only saving the heating time, but also making full use of the radiation energy.

For example, as shown in fig. 14, the flange 423 includes a boss 424 and a boss sidewall 425 connected to the boss 424, and the lamp tube 510 is located between the end sheet 431 and the boss sidewall 425 in the radial direction R of the shaped rod 410. In some embodiments, the lamp tube 510 and the sidewall 425 have an overlapping area when viewed in the radial direction R, such that infrared rays generated by the lamp tube 510 are directed toward the sidewall 425.

As shown in fig. 13, when the end sheet 431 is coupled to the sealing assembly 420, the end sheet 431 is pushed toward the boss sidewall 425 of the sealing assembly 420 in a direction indicated by an arrow and is coupled to the boss sidewall 425. In this embodiment, by positioning the lamp tube 510 between the end sheet 431 and the sidewall 425 of the boss, the end sheet 431 and the sidewall 425 of the boss can be heated simultaneously, thereby facilitating the melting of the end sheet 431 and the sidewall 425 of the boss, and facilitating the connection of the two.

For example, as shown in fig. 13, in the Z1 direction, the end face P1 of the end sheet 431 is higher than the plane P2 in which the boss 424 is located, that is, the end face P1 is farther from the rotation shaft 412 than the plane P2 in which the boss is located. In the present embodiment, by setting the end face P1 of the end sheet 431 higher than the plane P2 in which the boss 424 is located, the end sheet 431 can be easily attached to the boss side wall 425.

For example, in the radial direction R of the shaped rod 410, the distance from the lamp tube 510 to the boss sidewall 425 is shorter than the distance from the lamp tube 510 to the end sheet 431. The boss sidewall 425 has a larger thickness than the end sheet 431, and therefore is less likely to be heated, and it is advantageous to improve the heating effect on the boss sidewall 425 by disposing the lamp tube 510 closer to the boss sidewall 425. The closer the distance, the better the heating effect, as practical conditions allow.

For example, as shown in fig. 14, packaging sleeve 430 further includes a middle sheet 432 connected to end sheet 431, middle sheet 432 being located on a side of end sheet 431 distal from first end opening 430A. In some embodiments, packaging sleeve 430 has a region to be sealed defined by the fold lines of fig. 14, with end sheet 431 and middle sheet 432 connected at the fold lines, with end sheet 431 being located within the region to be sealed and middle sheet 432 being located outside the region to be sealed.

Fig. 17 is a schematic sectional view of a blocking member in the heat radiation assembly of fig. 15.

For example, the heat radiation assembly 500 further includes a blocking member configured to block infrared rays generated by the lamp tube 510 from being irradiated onto at least one of the middle sheet 432 and the tubular portion 422 of the flow guide member 421. By providing the blocking member in the heat radiation assembly 500, the infrared rays of the lamp tube 510 are prevented from being radiated to the non-heating areas on the packing sleeve and the guide member, thereby preventing the non-heating areas from being deformed, deteriorated in sealing property, etc. due to being heated by mistake.

For example, tube 510 includes a first side 510a and a second side 510b opposite each other in the axial direction Z1, where first side 510a is proximate to middle panel 432 and second side 510b is distal to middle panel 432. The blocking member includes a first blocking member 521, and the first blocking member 521 is disposed on the first side 510a of the lamp tube 510 and surrounds the flange 423 to block infrared rays generated from the lamp tube 510 from being irradiated to the middle sheet 432, thereby preventing erroneous heating of the inner sheet of the packaging sleeve.

For example, a first blocking member 521 extends in a plane perpendicular to the Z1 direction and is connected between the boss sidewall 425 of the flange 423 and the packaging sleeve 430, which more closely blocks infrared radiation from radiating down to the middle sheet 432. In some embodiments, the planar shape of the first stopper 521 is circular.

For example, the lamp tube 510 further comprises a third side 510c and a fourth side 510d opposite to each other in the radial direction R, wherein the third side 510c is close to the tubular portion 422 and the fourth side 510d is far from the tubular portion 422. The blocking member further includes a second blocking member 522 positioned at the third side 510c of the lamp tube 510 and surrounding the tubular portion 422 to block infrared rays generated from the lamp tube 510 from being irradiated to the tubular portion 422.

In some embodiments, the second stop 522 is located between the lamp tube 510 and the tubular portion 422 in the radial direction R. The second stopper 522 is provided on the boss 424 and extends in the Z1 direction, the tubular portion 422 extends in the Z1 direction, and the height of the second stopper 522 in the Z1 direction is equal to or greater than the height of the tubular portion 422 in the Z1 direction. In this way, the second stop 522 covers the tubular portion 422 as completely as possible. When the lamp tube 510 generates infrared radiation, only the radiation is radiated onto the boss side wall 425 without being heated by mistake because the tubular portion 422 is shielded by the second blocking member 522.

For example, the blocking member may further include a third blocking member 523 connected to the second blocking member 522, the third blocking member 523 being located at the second side 510b of the lamp tube 510 and covering the lamp tube 510.

Without the third blocker 423, the lamp 510 would emit infrared radiation upward to the operator or other components of the device. In this embodiment, the third blocking member 423 is disposed above the lamp tube 510, so that the radiation to the operator and the damage to other components can be reduced as much as possible, and the light pollution can be reduced.

As shown in fig. 17, providing the first stopper 521, the second stopper 522, and the third stopper 523 is preferable because the influence on the surrounding non-heated region can be reduced while ensuring heating of the end sheet 431 and the boss side wall 425. It is understood that in other embodiments of the present disclosure, the blocking member may not be provided, and the object of the present invention can be achieved.

For example, the first barrier 521, the second barrier 522, and the third barrier 523 are made of a light reflective material to reflect infrared rays irradiated onto the light reflective material. In some embodiments, the first blocking member 521, the second blocking member 522 and the third blocking member 523 are made of a metal or alloy material, or are coated with a metal or alloy coating, so that when infrared rays irradiate the first blocking member 521, the second blocking member 522 and the third blocking member 523, the infrared rays can be reflected back to the infrared radiation area due to the light reflectivity of the surfaces of the blocking members. Therefore, by providing the light reflecting material, not only the temperature of the barrier itself can be reduced, but also the radiation intensity of infrared rays can be improved.

The embodiment of the present disclosure takes one circular lamp as an example for illustration, it is understood that in other embodiments of the present disclosure, two semicircular lamps may also be used for heating, and the shape and structure of the lamp are not limited in the embodiment of the present disclosure.

The inventors found that when the end sheet 431 and the flange 423 of the flow guide member are heated using the circular lamp tube 510, since the circular lamp tube 510 is distant from the four corner positions of the end sheet 431, the four corner positions are insufficiently heated. Even after the heating time was increased, the four corner positions were not heated. Although the manufacturing cost of the lamp tube is low, the temperature of the wall of the lamp tube is high, about 500 ℃, and after the lamp tube is started, an operator can feel that the skin is heated, so that the operator is easily injured by light pollution. In addition, because the lamp tube is of a vacuum tube structure, the tube diameter cannot be further reduced due to the limitation of the size of the vacuum tube, and particularly the size of the corner position cannot be further reduced.

To this end, the disclosed embodiments provide another heat radiation assembly. Fig. 18 is a schematic view of another heat radiation assembly provided in an embodiment of the present disclosure. Fig. 19 is a schematic plan view of the heat radiation assembly of fig. 18.

For example, as shown in fig. 18 and 19, the heat radiation assembly 600 includes a heat radiation source, i.e., a sheet radiator 610, and a support member 620 supporting the sheet radiator 610. The support member 620 is disposed to surround the flange 423 and has a receiving cavity 620V, and the sheet radiator 610 is located in the receiving cavity 620V to surround the flange 423. When the sheet radiator 610 generates infrared radiation due to its resistance heating after being energized, the infrared radiation is irradiated to the flange 423 and the end sheet 431 through the support member 620, and heating of both is achieved.

For example, the sheet radiator 610 is flexible and can be bent into any shape. As shown in fig. 19, the planar shape of the sheet radiator 610 in the X1Y1 plane is a square, so that the infrared rays generated by the sheet radiator 610 can be radiated to the four corner positions of the end sheet 431, thereby enhancing the heating effect on the corner positions.

As shown in fig. 14, the end sheet 431 has a square planar shape and includes a corner region 433, and the boss 424 further includes an ear flap 426 connected to the boss sidewall 425, the ear flap 426 being joined to the corner region 433. When heating is applied to circular tube 510, corner regions 433 are spaced farther from circular tube 510 and are insufficiently heated, which may not provide a tight fit with ear flap 426.

In this embodiment, since the sheet radiator 610 and the end sheet 310 have the same planar shape, when the sheet radiator 610 is heated to generate infrared rays, the heating effect on the corner region 433 can be improved, facilitating the close coupling thereof with the ear flap 426.

In the embodiment of the present disclosure, the planar shape of the end sheet 310 is not limited to a square shape, and may be other shapes such as a triangle, a circle, and an ellipse, and may be a symmetrical figure or an asymmetrical figure. Since the planar shape of the sheet radiator 610 is determined according to the planar shape of the end sheet 310, and accordingly, may be other shapes than a square, the planar shapes of the end sheet 310 and the sheet radiator 610 are not limited in the embodiments of the present disclosure.

The "square" herein includes, but is not limited to, a square or a rectangle as long as it is substantially a quadrangle, and for example, a square or a rectangle with rounded corners, etc. are also included.

Fig. 20 is a schematic plan view of a sheet radiator according to an embodiment of the present disclosure. For example, the orthographic projection of the sheet radiator 610 in the X1Y1 plane is wavy, which increases the heating area of the infrared ray, and enables the power generated per unit area to be small, i.e., the current required per unit length to be small, and the temperature of the radiator to be lowered.

For example, the number of the sheet radiators 610 is plural, and the plurality of sheet radiators 610 are stacked in a radial direction of the rod 410 to reinforce the infrared radiation energy.

For example, the sheet radiator 610 includes a metal or alloy material. In some embodiments, the sheet radiator 610 is a thin sheet made of a metal or alloy material.

For example, as shown in fig. 19, the flange 423 has a first orthographic projection on the X1Y1 plane, the end sheet 431 has a second orthographic projection on the X1Y1 plane, and the first orthographic projection falls within the second orthographic projection; the heat radiation member 600 has a third orthographic projection on the X1Y1 plane, the third orthographic projection being between the first orthographic projection and the second orthographic projection and surrounding the first orthographic projection. That is, in the radial direction R of the shaped rod 410, the sheet radiator 610 is located between the packaging sleeve 430 and the sealing assembly 420, in particular between the end sheet 431 and the flange 423.

In the present embodiment, by disposing the third orthographic projection of the heat radiation member 600 between the first orthographic projection of the flange 423 and the second orthographic projection of the end sheet 431, the infrared rays generated by the sheet radiator 610 can be simultaneously radiated to the flange 423 and the end sheet 431 through the supporting member 620 to achieve simultaneous heating, not only saving the heating time, but also making full use of the radiation energy.

For example, the flange 423 includes a boss 424 and a boss sidewall 425 connected to the boss 424, and the sheet radiator 610 is located between the end sheet 431 and the boss sidewall 425 in the radial direction R of the shaped rod 410. In some embodiments, the sheet radiator 610 and the mesa sidewall 425 have an overlapping region as viewed in the radial direction R, so that infrared rays generated from the sheet radiator 610 are emitted toward the mesa sidewall 425 through the supporting member 620, thereby improving the heating effect on the mesa sidewall 425.

As shown in fig. 13, when the end sheet 431 and the seal assembly 420 are joined, the end sheet 431 is pushed in the direction of the arrow toward the boss sidewall 425 of the seal assembly 420 and joined to the boss sidewall 425. In this embodiment, by locating the sheet radiator 610 between the end sheet 431 and the boss sidewall 425, the end sheet 431 and the boss sidewall 425 can be heated simultaneously, thereby facilitating the melting of the end sheet 431 and the boss sidewall 425 and facilitating the connection therebetween.

For example, in the radial direction R of the rod 410, the distance from the sheet radiator 610 to the boss sidewall 425 is shorter than the distance from the sheet radiator 610 to the end sheet 431. The boss side wall 425 has a larger thickness than the end sheet 431, and therefore is less likely to be heated, and by disposing the sheet radiator 610 closer to the boss side wall 425, it is advantageous to improve the heating effect on the boss side wall 425. The closer the distance, the better the heating effect, as practical conditions allow.

For example, the supporting member 620 includes a first wall 621 and a second wall 622 extending in the axial direction Z1, the first wall 621 being disposed to surround the boss side wall 425, the second wall 622 being disposed to surround the first wall 621, and the receiving cavity 620V being located between the first wall 621 and the second wall 622 in the radial direction R of the mold stem 410.

In this embodiment, by providing the first wall 621 and the second wall 622 to form the accommodating cavity 610V for accommodating the sheet radiator 610, on one hand, it is more convenient to fix the sheet radiator 610, and the installation is convenient, and on the other hand, the operator is prevented from being scalded. Without providing the first wall 621 and the second wall 622, it is difficult for an operator to perform an operation such as gripping the sheet radiator 610 when the temperature of the sheet radiator 610 is excessively high, but by providing the first wall 621 and the second wall 622, a certain adiabatic effect can be achieved, and even if the temperature of the sheet radiator 610 is still high, the sheet radiator 610 can be moved by gripping the first wall 621 and the second wall 622.

For example, the supporting member 620 is transparent to infrared light so that the end sheet 431 and the flange 423 are heated by transmitting the infrared light through the supporting member 620. In some embodiments, the support member 620 is made of a quartz material.

For example, in order to better accommodate the square sheet radiator 610, for example, the planar shape of the accommodation cavity 620V is set to be the same as that of the sheet radiator 610, and also to be square.

Fig. 21 is a schematic sectional view of a blocking member in the heat radiation assembly of fig. 18.

For example, the support member 620 further comprises a connecting portion 623, the connecting portion 623 being connected in the radial direction R between the first wall 621 and the second wall 622, the connecting portion 623, the first wall 621 and the second wall 622 defining a closed housing chamber 620V.

For example, the supporting member 620 includes two connecting portions 623, the two connecting portions 623 being oppositely disposed in the Z1 direction, one of the connecting portions 623 connecting to top ends of both the first wall 621 and the second wall 622, and the other connecting portion 623 connecting to bottom ends of both the first wall 621 and the second wall 622. Thus, a closed receiving chamber 620V may be formed.

When the receiving chamber 620V is in a closed state, an inert gas may be filled therein to prevent oxidation of the sheet radiator 610. In addition, in the fully closed state, the support member 620 and the sheet radiator 610 are relatively strong as a whole, are less likely to be broken, and are also easy to install.

In some embodiments, the planar shape of the first wall 621 and the second wall 622 in the X1Y1 plane is a square, the first wall 621 has a side length of about 35mm, the second wall has a side length of about 45mm, and the wall thickness is about 1mm. The heating time of the sheet radiator 610 is 1 to 2 seconds, for example, 1.5 seconds, which may reach a preset temperature of 200 ℃.

For example, as shown in fig. 14, packaging sleeve 430 further includes a middle sheet 432 connected to end sheet 431, middle sheet 432 being located on a side of end sheet 431 distal from first end opening 430A.

For example, as shown in fig. 21, the heat radiation assembly 600 further includes a blocking member configured to block infrared rays generated by the sheet radiator 610 from being irradiated onto at least one of the middle sheet 432 and the tubular portion 422 of the flow guide member 421. By providing the blocking member in the heat radiation assembly 600, the infrared rays of the sheet radiator 610 can be prevented from being radiated to the non-heated areas on the packing sleeve and the guide member, thereby preventing the non-heated areas from being deformed, deteriorated in sealing performance, etc. due to being heated by mistake.

For example, the support member 620 includes a first side 620a and a second side 620b opposite to each other in the radial direction R of the shaped bar 410, the first side 620a being close to the tubular portion 422, and the second side 620b being far from the tubular portion 422. The barrier member includes: a first blocking member 631 positioned at the first side 620a to block infrared rays generated from the sheet radiator 610 from being irradiated to the tubular part 422, and a second blocking member 632 positioned at the second side 620b to block infrared rays generated from the sheet radiator 610 from being irradiated to the middle sheet 432.

For example, the first blocking member 631 is disposed on the first wall 621 between the sheet radiator 610 and the tubular part 422, so that it blocks infrared rays generated from the sheet radiator 610 from being irradiated to the tubular part 422. In some embodiments, the planar shape of the first barrier 631 in the X1Y1 plane is square.

Fig. 22A is a schematic structural view of the first blocking member of fig. 21. The first blocking member 631 is positioned above the first wall 621 and has a rectangular shape, and an area below the first blocking member 631 is an infrared ray transmitting area corresponding to the mesa sidewall 425, so that infrared rays are radiated to the mesa sidewall 425 through the first wall 621, thereby heating the mesa sidewall 425.

For example, the second blocking member 632 is disposed on the second wall 622 between the sheet radiator 610 and the middle sheet 432, and thus blocks infrared rays generated from the sheet radiator 610 from being irradiated to the middle sheet 432.

Fig. 22B is a schematic structural view of the second and third stoppers of fig. 21. The second blocking member 632 is located below the second wall 622 and has a trapezoidal shape. Alternatively, the blocking member may further include a third blocking member 633, and an area between the second blocking member 632 and the third blocking member 633 is a transmission area of infrared rays, which corresponds to the end sheet 431, so that infrared rays are radiated to the end sheet 431 (including a corner area) through the second wall 622, thereby achieving heating of the end sheet 431.

For example, the first, second, and

third barriers

631, 632, and 633 are made of a light reflective material to reflect infrared rays irradiated onto the light reflective material. In some embodiments, the first barrier 631, the second barrier 632, and the third barrier 633 are made of a metal or alloy material, or are coated with a metal or alloy coating, so that when infrared rays irradiate the first barrier 631, the second barrier 632, and the third barrier 633, the infrared rays are reflected back to reach the infrared radiation region due to the light reflectivity of the barrier surfaces. Therefore, by providing the light reflecting material, not only the temperature of the barrier itself can be reduced, but also the radiation intensity of infrared rays can be improved.

For example, as shown in fig. 19, the sheet radiator 610 includes a first end 610A and a second end 610B in the extending direction thereof. The heat radiation assembly 600 further includes: a first terminal 641, a second terminal 642, and a flap 650. The first terminal 641 is connected to the first end 610A and is used to supply a positive voltage to the sheet radiator 610. The second terminal 642 is connected to the second end 610B and is used to supply a negative voltage to the sheet radiator 610. A flap 650 is disposed between the first terminal 641 and the second terminal 642 to insulate the first terminal 641 and the second terminal 642 from each other.

The first and

second terminals

641 and 642 supply power to the sheet radiator 610, and generate infrared radiation when the sheet radiator 610 is powered on due to resistance heating thereof. By providing a blocking piece 650 between the first terminal 641 and the second terminal 642, a short circuit between the first terminal 641 and the second terminal 642 can be prevented.

The heat radiation assembly 600 has the following advantages compared to the heat radiation assembly 500 in the previous embodiment: 1) The square sheet radiator is easy to customize the size and go deep into the product for heating, and the heating area effect on the corner is better; 2) A metal plating layer can be added on the supporting component to be used as a blocking piece, and an additional structure is not needed; 3) The number of the sheet-shaped radiators can be flexibly increased according to needs, and more heating is performed on the boss which is not easy to heat.

The following table shows the current, voltage and power comparison results for the three heating modes. As can be seen from table 1, compared to the hot air heating method, the heating method of the circular lamp tube has lower power, and the effective heating power is much higher than that of the hot air heating method, but the heating effect at the four corners of the end sheet is not ideal due to the limitation of the size and shape.

TABLE 1

The heating power of the sheet radiator is lower than that of the annular lamp tube, and the effective heating power is higher, but the following problems can still exist: 1) The current is too large, which may cause the problems of heating of the lead, peeling of the wire skin and the like; 2) The power at the two terminals of the sheet radiator is unbalanced, and the power at the corners is low, so that the corners are insufficiently heated; 3) Cracking of the quartz material may occur at high temperatures, resulting in a shortened service life.

To this end, the disclosed embodiments provide yet another heat radiation assembly. Fig. 23 is a schematic view illustrating a structure of still another heat radiation member according to an embodiment of the present disclosure. Fig. 24 is a schematic plan view of the heat radiation assembly of fig. 23.

For example, as shown in fig. 23, the heat radiation member 700 includes a support member 710, the support member 710 including a first side 711 and a second side 712 opposite to each other in the radial direction R of the molding rod 410, the first side 711 being close to the flange 423, and the second side 712 being far from the flange 423. The heat radiation assembly 700 further includes first and second heat radiation sources, i.e., first and

second radiation wires

721 and 722, the first radiation wire 721 being disposed at the first side 711 to heat the flange 423, and the second radiation wire 722 being disposed at the second side 712 to heat the end sheet 431.

When the first radiation wire 721 is energized, infrared radiation is generated due to resistance heating of the first radiation wire 721, and the infrared radiation is directly irradiated on the flange 423, so that the flange 423 is heated; when the second radiation wire 722 generates infrared radiation due to its resistance heat after being energized, the infrared ray is directly irradiated onto the end sheet 431, thereby heating the end sheet 431. By "direct illumination" is meant that the infrared does not pass through any tangible components.

In some embodiments, for example, the first radiating wire 721 and the second radiating wire 722 comprise a metal or alloy material, such as tungsten, iron-nickel, or nickel-chromium, among others. The heating time of the first radiation wire 721 and the second radiation wire 722 is 0.1 to 1 second, for example, 1 second, which is about 200 ℃.

For example, as shown in fig. 19, the flange 423 has a first orthographic projection on the X1Y1 plane, the end sheet 431 has a second orthographic projection on the X1Y1 plane, and the first orthographic projection falls within the second orthographic projection; the heat radiation member 700 has a third orthographic projection on the X1Y1 plane, the third orthographic projection being located between the first orthographic projection and the second orthographic projection and surrounding the first orthographic projection. That is, in radial direction R of the shaped rod 410, the first 721 and second 722 radiation wires are located between the packaging sleeve 430 and the sealing assembly 420, in particular between the end sheet 431 and the flange 423.

In this embodiment, by disposing the third orthographic projection of the heat radiation member 700 between the first orthographic projection of the flange 423 and the second orthographic projection of the end sheet 431, the infrared rays generated by the first radiation wires 721 can be directly radiated to the flange 423, and the infrared rays generated by the second radiation wires 722 can be directly radiated to the end sheet 431 to achieve simultaneous heating, thereby not only saving the heating time, but also making full use of the radiation energy.

For example, the planar shape of the first radiation wire 721 in the X1Y1 plane is the same as the planar shape of the flange 423 in the X1Y1 plane, for example, each square, so that the heating effect on the four boss side walls 425 can be ensured.

For example, the planar shape of the second radiation wire 722 in the X1Y1 plane is the same as the planar shape of the end sheet 431 in the X1Y1 plane, for example, the second radiation wire 722 is square, so that the infrared rays generated by the second radiation wire 722 can be radiated to the four corner positions of the end sheet 431, thereby improving the heating effect on the corner positions, and further ensuring the tight combination of the corner region 433 and the ear wing 426.

In the embodiment of the present disclosure, the planar shape of the end sheet 310 is not limited to a square shape, and may be other shapes such as a triangle, a circle, and an ellipse, and may be a symmetrical figure or an asymmetrical figure. Since the planar shapes of the first and

second radiation wires

721 and 722 are determined according to the planar shape of the end sheet 310, and accordingly, may be other shapes than a square, the planar shapes of the end sheet 310 and the sheet radiator 610 are not limited in the embodiments of the present disclosure.

For example, the supporting member 710 includes a ceramic material, which is more resistant to high temperature than a quartz material, and may prevent the supporting member 710 from cracking during heating.

For example, the planar shape of the support member 710 in the X1Y1 plane is the same as the planar shape of the end sheet 310 and the planar shape of the flange 423 in the X1Y1 plane, which facilitates winding the first and

second radiation wires

721, 722 having the same shape on the support member 710.

For example, the heat radiation assembly 700 includes a plurality of first radiation wires 721 disposed on the first side 711 of the support member 710. In some embodiments, a plurality of first radiating filaments 721 are disposed on first side 711, the plurality of first radiating filaments 721 being disposed around boss sidewall 425 to heat boss sidewall 425.

For example, the plurality of first radiation elements 721 are positioned to correspond to the plateau sidewalls 425. In some embodiments, the plurality of first radiation wires 721 and the side wall 425 have an overlapping region when viewed from the radial direction R of the forming rod, so that the infrared rays generated by the plurality of first radiation wires 721 are directly emitted to the side wall 425 to improve the heating effect on the side wall 425.

For example, the heat radiation assembly 700 includes a plurality of second radiation wires 722 disposed on the second side 712 of the support member 710. In some embodiments, a plurality of second radiation wires 722 is arranged on the second side 712, the plurality of second radiation wires 722 being located between the support member 710 and the end sheet 431 as seen in the radial direction R and arranged to surround the support member 710 to heat the end sheet 431.

For example, the plurality of second radiation wires 722 are disposed at positions corresponding to the end sheets 431. In some embodiments, the plurality of second radiation wires 722 has an overlapping region with the end sheet 431 as viewed in the radial direction R, so that infrared rays generated by the plurality of second radiation wires 722 are directly emitted to the end sheet 431, and the heating effect on the end sheet 431 is improved.

For example, the plurality of first radiation wires 721 are formed of one radiation wire wound on the first side 711 of the support member 710, and the plurality of second radiation wires 722 are formed of one radiation wire wound on the second side 712 of the support member 710. Compare in the condition that many circles of radiation filaments formed by many radiation filaments respectively, adopt above-mentioned radiation filament to only need two wiring ends can switch on, the use quantity of wiring end that has significantly reduced from this reduces energy loss, improves electric heat conversion efficiency.

Compared with the aforementioned schemes of the circular tube and the square sheet radiator, in this embodiment, since the positions of the first radiation filament 721 and the second radiation filament 722 can be adjusted according to the positions of the areas to be heated, a blocking component is not required to be disposed, which not only reduces the difficulty in processing and manufacturing, but also saves the material cost.

To further enhance the heating effect on corner locations 433 of the end sheet, as shown in fig. 23, for example, the plurality of second radiant filaments 722 includes at least two groups of second radiant filaments, including a first group of radiant filaments 722A and a second group of radiant filaments 722B. In the axial direction Z1, the first group of filaments 722A is farther from the shaped rod 410 than the second group of filaments 722A, and further, the first group of filaments 722A is farther from the end 410A of the shaped rod 410 than the second group of filaments 722A. A second radiation wire 722 of the second group of radiation wires 722B is configured to be bent to form a tip portion 723.

For example, a second radiation wire 722 of the second group of radiation wires 722B forms a tip portion 723 at a position corresponding to a corner position 433 (see fig. 14) of the end sheet 431. In some embodiments, the second radiating wire 722 is formed with four tips 723, one for each of the four corner locations 433 of the end sheet 431. When the second radiation wire 722 in the second group 722B is powered on, the infrared ray generated by the tip portion 723 can be directly radiated to the corner position 433, so that the heating effect on the corner position 433 is greatly improved compared with the case that the tip portion 723 is not provided, and the tight combination between the corner position 433 and the ear wing 426 is ensured.

Fig. 25 is a partially enlarged plan view of a second side of the support member of fig. 23, i.e., a partially enlarged view of a dotted line frame 712E in fig. 23. For example, the support member 710 further includes a slot for receiving a radiation wire. In some embodiments, the support member 710 includes a first slot (not shown) on the first side 711 and a second slot 732 on the second side 712, the first radiating element 721 being embedded in the first slot and the second radiating element 722 being embedded in the second slot 732.

Since the radiation wires are expanded when heated, a short circuit is easily generated when the distance between adjacent two radiation wires is too close. The first radiation wires 721 are embedded into the first grooves by forming the first grooves on the supporting member 710, so that a short circuit phenomenon between the adjacent first radiation wires 721 can be avoided; by forming the second groove 732 in the support member 710, the second radiation wire 722 is inserted into the second groove 732, and thus, a short circuit phenomenon between adjacent second radiation wires 722 can be prevented

For example, the number of the first slots is plural, the number of the second slots 732 is plural, the plural first slots are provided in one-to-one correspondence with the plural first radiation wires 721, and the plural second slots are provided in one-to-one correspondence with the plural second radiation wires 722.

Compared with the scheme of an annular lamp tube and a square sheet radiator, the heating scheme adopting the radiation wire has the following advantages: 1) The longer and thinner radiator can improve the resistance, and the voltage is improved and the current is reduced under the same power, so that the industrial three-phase power is directly used; 2) The radiation wire can be profiled, so that the arrangement of a blocking part is omitted; 3) A temperature sensor can be embedded to control the temperature; 4) The maximum power can be further adjusted by adjusting the thickness density of the radiation wires.

In the embodiment of the present disclosure, the first radiation wire or the second radiation wire may be wound on the surface of the support member, or may be embedded in the support member.

In the disclosed embodiment, after the end sheet 431 of the packaging sleeve 430 and the sealing member 420 are heated by the heat radiation member 450, the first end opening 430A is sealed.

For example, as shown in fig. 12, the apparatus 1000 further comprises a sealing device 460. After the end sheet 431 of the packaging sleeve 430 and the sealing member 420 are heated by the heat radiation member 450, the forming rod 410 is rotated to a sealing position corresponding to the sealing device 460, and the sealing device 460 connects the heated end sheet and the heated sealing member 420 to each other, so as to seal the first end opening 430A, thereby forming a packaging box with one end sealed.

Next, as the forming bar 410 is rotated to the lower right position shown in fig. 12, the end-sealed package is transferred to a subsequent station, such as for filling through the end opening 430B, sealing the end opening 430B, and the like.

The embodiment of the disclosure also provides a manufacturing method of the packaging container.

Referring to fig. 26, a method for manufacturing a packaging container according to an embodiment of the present disclosure includes:

s100: sleeving a packaging sleeve on the forming rod, wherein the sealing assembly is positioned at the tail end of the forming rod, the packaging sleeve is provided with end sheets surrounding the periphery of the sealing assembly, and a gap is reserved between the end sheets and the sealing assembly;

s200: disposing a heat radiation member in the gap, and heating the end sheet and the seal member in a heat radiation manner with the heat radiation member; and

s300: the end sheet and the seal assembly are bonded to each other.

The above embodiment provides the manufacturing method of the packaging container, in which the heat radiation member is provided in the gap between the end sheet and the sealing member, and the end sheet and the sealing member are heated by the heat radiation means, which has the following advantages:

1) Compared with a hot air heating mode, the shape of the heating area is controlled by controlling the shape of the heat radiation area, so that the shape of the heating area is more controllable. Even if the packaging container has a more complicated structure, the shape, size, area, etc. of the heating region can be flexibly adjusted to ensure the heating effect.

3) The heat radiation heating mode has high electric heat conversion efficiency and high heating speed, and only needs 0.5 to 5 seconds when the material is heated to a preset temperature (for example, about 200 ℃), so that the heating time is greatly shortened, and the capacity in unit time is improved.

For example, the above-described manufacturing method can be implemented using the apparatus 1000 for manufacturing packaging containers mentioned in the foregoing embodiments. For the detailed structure and process of the apparatus 1000, reference is made to the description in the previous embodiments, and the description is omitted here.

For example, the heat radiation member of the above-described manufacturing method may employ the

heat radiation member

500, 600, or 700 of the previous embodiment. For the specific construction and operation principle of the

heat radiation member

500, 600 or 700, reference is made to the description of the previous embodiment, which is not repeated herein.

Referring to fig. 12 to 25, for example, the above step S100 includes: sleeving a packaging sleeve 430 on the forming rod 410, wherein the sealing assembly 420 is positioned at the first end 410A of the forming rod 410, the packaging sleeve 430 is provided with an end sheet 431 surrounding the sealing assembly 420, and a gap 440G is reserved between the end sheet 431 and the sealing assembly 420;

referring to fig. 12 to 25, for example, the above step S200 includes: the

heat radiation member

500, 600 or 700 is disposed in the gap 440G, and the end sheet 431 and the sealing member 420 are heated in a heat radiation manner by the

heat radiation member

500, 600 or 700.

Referring to fig. 12 to 25, for example, the step S300 includes: the end sheet 431 and the sealing assembly 420 are bonded to each other.

For example, as shown in fig. 14, the seal assembly 420 includes a flow guide member 421, and the flow guide member 421 includes a tubular portion 422 and a flange 423 connected to the tubular portion 422. The manufacturing method comprises the following steps: heating the end sheet 431 and the flange 423 in a heat radiation manner by the

heat radiation assembly

500, 600 or 700; and joining the end sheet 431 and the flange 423 to each other. By heating the end sheet 431 and the flange 423 using the

heat radiation assembly

500, 600 or 700, the heating area can be concentrated, facilitating the melting of the end sheet 431 and the flange 423, making the combination thereof more compact and firm.

For example, as shown in fig. 14 and 16, the flange 423 includes a boss 424 and a boss sidewall 425 connected to the boss 424, and the shaped rod 410 defines an axial direction Z1 and a radial direction R perpendicular to the axial direction Z1. The manufacturing method comprises the following steps: the

heat radiation member

500, 600, or 700 is disposed in the gap 440G such that the

heat radiation member

500, 600, or 700 is located between the end sheet 431 and the boss sidewall 425 in the radial direction R.

By disposing the

heat radiation member

500, 600 or 700 between the end sheet 431 and the bank side wall 425, the infrared rays generated by the

heat radiation member

500, 600 or 700 can be simultaneously radiated to the bank side wall and the end sheet 431 to achieve simultaneous heating, facilitating the melting of the end sheet 431 and the bank side wall 425, not only saving the heating time, but also making full use of the radiation energy.

For example, referring to fig. 15 to 17, the heat radiation assembly 500 includes a lamp tube 510; in the above step S200, heating the end sheet 431 and the sealing member 420 in a heat radiation manner using the

heat radiation member

500, 600 or 700 includes: infrared rays are generated by the lamp tube 510 to heat the end sheet 431 and the flange 423.

By providing the lamp tube 510, infrared rays can be simultaneously and directly irradiated to the end sheet 431 and the flange 423, thereby contributing to improvement of heating efficiency and shortening of heating time. The technical effects of the heating manner of the circular lamp tube can be referred to the technical effects in the previous embodiments, and are not described herein again.

For example, referring to fig. 18 to 22B, the heat radiation assembly 600 includes: a sheet radiator 610 and a support member 620 having a receiving cavity 620V, the sheet radiator 610 being located in the receiving cavity 620V; in the above step 200, heating the end sheet 431 and the sealing member 420 in a heat radiation manner using the

heat radiation member

500, 600 or 700 includes: the infrared rays generated by the sheet radiator 610 are irradiated to the end sheet 431 and the flange 423 through the support member 620.

The sheet radiator 610 is bendable and can improve the heating effect on the corner position of the end sheet 431, compared to the heating method of the circular tube. The technical effects of the heating mode of the sheet radiator can be seen in the technical effects of the previous embodiments, and are not described herein again.

For example, referring to fig. 23 to 25, the heat radiation assembly 700 includes: a support member 710 and first 721 and second 722 radiating elements located on opposite sides (i.e., first 711 and second 712) of the support member 710; in the above step S200, heating the end sheet 431 and the sealing member 420 in a heat radiation manner using the

heat radiation member

500, 600 or 700 includes: the flange 423 is heated by the first radiation wire 721, and the end sheet 431 is heated by the second radiation wire 722.

In this embodiment, the infrared ray generated by the first radiation wire 721 may be directly irradiated to the flange 423 to heat the flange 423, and the infrared ray generated by the second radiation wire 722 may be directly irradiated to the end sheet 431 to heat the end sheet 431.

Compared with the heating mode of an annular lamp tube and a sheet-shaped radiator, the heating mode of the radiation wire does not need to be provided with a blocking part, so that the processing and manufacturing difficulty is reduced, and the material cost is saved. The technical effects of the heating manner of the radiation wire can be seen in the technical effects of the previous embodiments, and are not described herein again.

In the embodiment of the present disclosure, different objects have different infrared absorption capabilities, and even if the same object has different infrared absorption capabilities for different wavelengths. Therefore, when infrared heating is applied, an appropriate infrared radiation source is selected according to the type of the object to be heated, and the radiation energy is concentrated in the absorption wavelength range of the object to be heated, so that a good heating effect is obtained.

For example, a packaging sheet of polyethylene material has the highest absorption efficiency for infrared rays having a wavelength in the mid-infrared range, and therefore infrared rays in the mid-infrared range are preferred in the present application.

Embodiments of the present disclosure also include the following examples:

(1) According to one or more embodiments of the present disclosure, there is provided an apparatus for manufacturing a packaging container, including:

the device comprises a forming device and a sealing device, wherein the forming device comprises a forming rod, a sealing component and a packaging sleeve, and the sealing component is positioned at the tail end of the forming rod; the packaging sleeve is sleeved at the tail end of the forming rod and is provided with an end sheet which surrounds the periphery of the sealing component and is configured to be combined with the sealing component; a gap is left between the end sheet and the sealing assembly;

a heat radiation assembly, wherein the heat radiation assembly is disposed in the gap and configured to heat the end sheet and the sealing assembly in a heat radiation manner.

(2) In the apparatus described in the example (1),

wherein the seal assembly comprises a flow directing member comprising a tubular portion and a flange connected to the tubular portion;

wherein the shaped bar defines an axial direction, the flange has a first orthographic projection on a plane perpendicular to the axial direction, the end sheet has a second orthographic projection on a plane perpendicular to the axial direction, the first orthographic projection falling within the second orthographic projection;

wherein the heat radiation assembly has a third orthographic projection on a plane perpendicular to the axial direction, the third orthographic projection being located between the first orthographic projection and the second orthographic projection and surrounding the first orthographic projection.

(3) In the apparatus of example (2), the heat radiation assembly includes a heat radiation source that is a lamp tube configured to generate infrared rays to heat the end sheet and the flange.

(4) In the apparatus described in example (3),

wherein the flange comprises a boss and a boss side wall connected with the boss;

wherein, in the radial direction of the forming rod, the lamp tube is positioned between the end sheet and the boss side wall, and the radial direction is perpendicular to the axial direction.

(5) In the apparatus described in example (4),

wherein, in the radial direction, a distance from the lamp tube to the boss side wall is shorter than a distance from the lamp tube to the end sheet.

(6) In the apparatus described in example (3),

wherein the packaging sleeve further comprises an intermediate sheet connected to the end sheet, the intermediate sheet being located on the side of the end sheet remote from the end opening;

wherein the heat radiation assembly further includes a blocking member configured to block infrared rays generated by the lamp tube from being irradiated onto at least one of the intermediate sheet and the tubular portion of the flow guide member.

(7) In the apparatus described in example (6),

wherein the light tube comprises a first side and a second side opposite to each other in the axial direction, wherein the first side is close to the middle sheet and the second side is far from the middle sheet;

wherein the blocking member includes a first blocking member disposed at a first side of the lamp tube and surrounding the flange to block infrared rays generated from the lamp tube from being irradiated to the intermediate sheet.

(8) In the apparatus described in the example (7),

wherein the lamp tube comprises a third side and a fourth side opposite to each other in a radial direction of the shaped rod, wherein the third side is close to the tubular portion and the fourth side is far away from the tubular portion;

wherein the blocking member further includes a second blocking member positioned at a third side of the lamp tube and surrounding the tubular portion to block infrared rays generated from the lamp tube from being irradiated to the tubular portion.

(9) In the apparatus described in example (8),

the blocking component further comprises a third blocking part connected to the second blocking part, and the third blocking part is located on the second side of the lamp tube and covers the lamp tube.

(10) In the apparatus according to example (6),

the blocking member includes a blocking member made of a light reflecting material to reflect infrared rays irradiated onto the light reflecting material.

(11) In the apparatus described in example (2),

wherein the heat radiation assembly includes: a thermal radiation source and a support member supporting the thermal radiation source;

wherein the support member is disposed to surround the flange and has a receiving cavity in which the heat radiation source is located to surround the flange.

(12) In the apparatus according to example (11),

wherein the support member includes: a first wall and a second wall extending in the axial direction, the first wall being disposed around the boss side wall, the second wall being disposed around the first wall, the accommodation cavity being located between the first wall and the second wall in a radial direction of the forming rod, the radial direction being perpendicular to the axial direction.

(13) In the apparatus described in example (12),

wherein the support member further includes a connecting portion connected between the first wall and the second wall in the radial direction, the connecting portion, the first wall, and the second wall defining the accommodation chamber.

(14) In the apparatus described in example (13),

the connecting parts are two, the two connecting parts are arranged oppositely along the axial direction, a closed accommodating cavity is defined by the two connecting parts, the first wall and the second wall, and inert gas is filled in the accommodating cavity.

(15) In the apparatus described in example (11),

wherein the packaging sleeve further comprises an intermediate sheet connected to the end sheet, the intermediate sheet being located on a side of the end sheet remote from the end opening;

wherein the heat radiation assembly further comprises a blocking member configured to block infrared rays generated by the heat radiation source from being irradiated onto at least one of the intermediate sheet and the tubular portion of the flow guide member.

(16) In the apparatus described in example (15),

wherein the support member includes a first side and a second side opposite to each other in a radial direction of the shaped rod, the first side being close to the tubular portion, the second side being remote from the tubular portion, the radial direction being perpendicular to the axial direction;

wherein the blocking member includes: a first barrier on the first side to block infrared radiation generated by the thermal radiation source from impinging on the tubular portion, and a second barrier on the second side to block infrared radiation generated by the thermal radiation source from impinging on the intermediate sheet.

(17) In the apparatus described in example (11),

the heat radiation source is a sheet radiator for generating infrared rays, and the orthographic projection of the sheet radiator in a plane perpendicular to the axial direction is wavy.

(18) In the apparatus described in example (17),

wherein the sheet radiator includes a first end and a second end in an extending direction thereof;

wherein the heat radiation assembly further includes: first terminal, second terminal and flap:

the first terminal is connected with the first end and used for providing positive voltage for the sheet radiator;

the second terminal is connected with the second end and used for providing negative voltage for the sheet radiator;

the blocking piece is arranged between the first terminal and the second terminal so as to enable the first terminal and the second terminal to be mutually insulated.

(19) The apparatus of example (17), wherein the number of the sheet radiators is plural, and the plural sheet radiators are stacked in a radial direction of the rod.

(20) The device of example (17), wherein the sheet radiator comprises a metal or alloy material.

(21) In the apparatus of example (11), wherein the thermal radiation source is configured to radiate infrared light, and the support member is light-transmissive so that the infrared light passes through the support member to heat the end sheet and the flange, respectively.

(22) In the apparatus of example (2), wherein the heat radiation member includes:

a support member including a first side and a second side opposite to each other in a radial direction of the shaped rod, the first side being close to the flange, the second side being remote from the flange;

a first thermal radiation source disposed on the first side to heat the flange and a second thermal radiation source disposed on the second side to heat the end sheet.

(23) In the apparatus described in example (22),

wherein the flange comprises a boss and a boss sidewall connected with the boss;

the first thermal radiation source is a first radiation wire disposed around the mesa sidewall to heat the mesa sidewall;

the second radiation source is a second radiation wire that is located between the support member and the end sheet in the radial direction and is disposed around the support member to heat the end sheet.

(24) In the apparatus described in example (23),

wherein the planar shape of the first radiation wire is the same as the planar shape of the flange, and the planar shape of the second radiation wire is the same as the planar shape of the end sheet.

(25) In the apparatus according to example (23),

the number of the second radiant wires is multiple, the second radiant wires comprise at least two groups of second radiant wires, and the at least two groups of second radiant wires comprise a first group of radiant wires and a second group of radiant wires; the first set of radiating filaments being further from the shaped rod than the second set of radiating filaments in the axial direction;

wherein a second radiation wire of the second set of radiation wires is configured to be bent to form a tip portion.

(26) In the apparatus of example (25), wherein the packaging sleeve includes four corners, the tip portions are four, and the four tip portions are disposed in one-to-one correspondence with the four corners.

(27) In the apparatus set forth in example (22),

wherein the support member further comprises:

a first slot located on the first side of the support member; and for housing the first thermal radiation source;

a second slot on the second side of the support member;

wherein the first thermal radiation source is embedded in the first groove and the second thermal radiation source is embedded in the second groove.

(28) In the apparatus of example (27), wherein,

the number of the first heat radiation sources is multiple, and the number of the second heat radiation sources is multiple;

the number of the first grooves is multiple, and the number of the second grooves is multiple;

the plurality of first grooves are arranged in one-to-one correspondence with the plurality of first heat radiation sources, and the plurality of second grooves are arranged in one-to-one correspondence with the plurality of second heat radiation sources.

(29) The apparatus of example (22), wherein the support member comprises a ceramic material.

(30) There is also provided in accordance with one or more embodiments of the present disclosure a method of manufacturing a packaging container, including:

sleeving a packaging sleeve on a forming rod, wherein a sealing component is positioned at the tail end of the forming rod, the packaging sleeve is provided with an end sheet surrounding the periphery of the sealing component, and a gap is reserved between the end sheet and the sealing component;

disposing a heat radiation member in the gap, and heating the end sheet and the seal member in a heat radiation manner with the heat radiation member; and

bonding the end sheet and the seal assembly to each other.

(31) In the manufacturing method according to example (30),

wherein the manufacturing method comprises:

heating the end sheet and the flange in a heat radiation manner with the heat radiation member; and

bonding the end sheet and the flange to each other.

(32) In the manufacturing method described in example (31),

wherein the flange comprises a boss and a boss sidewall connected to the boss, and the forming rod defines an axial direction and a radial direction perpendicular to the axial direction;

wherein the manufacturing method comprises:

disposing the heat radiation member in the gap such that the heat radiation member is located between the end sheet and the boss side wall in the radial direction.

(33) In the manufacturing method described in example (31),

wherein the heat radiation assembly includes a lamp tube;

wherein heating the end sheet and the sealing assembly in a heat radiation manner using the heat radiation assembly includes: generating infrared rays with the lamp tube to heat the end sheet and the flange.

(34) In the manufacturing method described in example (31),

wherein the heat radiation assembly includes: the radiator comprises a sheet radiator and a supporting component with an accommodating cavity, wherein the sheet radiator is positioned in the accommodating cavity;

wherein the end sheet and the sealing assembly are heated in a heat radiation manner by the heat radiation assembly, including:

infrared rays generated by the sheet radiator are irradiated to the end sheet and the flange through the support member.

(35) In the manufacturing method described in example (31),

wherein the heat radiation assembly includes: a support member and first and second radiating wires positioned on opposite sides of the support member;

wherein heating the end sheet and the sealing assembly in a heat radiation manner using the heat radiation assembly includes:

heating the flange with the first radiant wire, and heating the end sheet with the second radiant wire.

In this context, the following points need to be noted:

(1) The drawings of the embodiments of the disclosure only relate to the structures related to the embodiments of the disclosure, and other structures can refer to the common design.

(2) Without conflict, embodiments of the present disclosure and features of the embodiments may be combined with each other to arrive at new embodiments.

The above description is intended to be exemplary of the present disclosure, and not to limit the scope of the present disclosure, which is defined by the claims appended hereto.

Claims

1. A method of manufacturing a packaging container, wherein the packaging container is formed from a packaging precursor, the packaging container comprising: a top surface, a bottom surface, a side surface extending between the top surface and the bottom surface, and a bond disposed on at least one of the top surface, the bottom surface, and the side surface; the manufacturing method comprises the following steps: the combination part is formed by the above-mentioned materials,

wherein the forming the joint includes: illuminating the pre-bonded structure on the package precursor such that at least a portion of the pre-bonded structure is melted by the heat.

2. The manufacturing method according to claim 1, wherein the substrate is a glass substrate,

wherein the packaging container comprises a packaging sheet, the pre-bond structure comprising one of a first pre-bond structure and a second pre-bond structure:

the first pre-bonded structure comprises a plurality of packaging sheets arranged in a stack;

the second pre-bonded structure includes the packaging sheet and a bonding member configured to bond to the packaging sheet.

3. The method of manufacturing as set forth in claim 2,

wherein the pre-bonded structure is the first pre-bonded structure, the multi-layer packaging sheets are contacted with each other in a thickness direction of the packaging sheets to form a sheet contact portion;

wherein said illuminating said pre-bonded structure comprises: illuminating the multi-layer packaging sheet to heat and melt part or all of the sheet contacting portions, thereby bonding the multi-layer packaging sheets to each other.

4. The manufacturing method according to claim 3, wherein the substrate is a glass substrate,

wherein the multi-layer packaging sheet comprises a first side and a second side opposite to each other in a thickness direction of the packaging sheet,

wherein said illuminating said multi-layer packaging sheet comprises: illuminating the multi-layer packaging sheet from at least one of the first side and the second side.

5. The method of manufacturing as set forth in claim 2,

wherein the pre-bonding structure is the second pre-bonding structure, the packaging sheet and the bonding member are in contact with each other in a thickness direction of the packaging sheet to form a sheet member contact portion;

wherein said illuminating said pre-bonded structure comprises: illuminating at least one of the packaging sheet and the bonding means to heat melt part or all of the sheet member contacting portion, thereby bonding the bonding means and the packaging sheet to each other.

6. The manufacturing method according to the above-mentioned claim 5,

wherein the bonding member is farther from the contents in the packaging container than the packaging sheet in a thickness direction of the packaging sheet;

wherein the illuminating at least one of the packaging sheet and the bonding member comprises: illuminating both the bonding means and the packaging sheet.

7. The manufacturing method according to claim 2, wherein the substrate is a glass substrate,

wherein the packaging precursor comprises a packaging sleeve comprising a top opening and a bottom opening opposite to each other in a first direction, at least one of the top opening and the bottom opening forming an open-ended pre-bond structure, the open-ended pre-bond structure being the first pre-bond structure;

wherein the packaging container further comprises a top seal and a bottom seal opposite to each other in the first direction, the top seal being located at the top surface, the bottom seal being located at the bottom surface, at least one of the top seal and the bottom seal comprising a first bond;

wherein the forming the joint includes:

forming the first bond, wherein the open-ended pre-bond structure is illuminated to cause at least a portion of the open-ended pre-bond structure to melt under heat to form the first bond, thereby forming at least one of the top seal and the bottom seal.

8. The manufacturing method according to the above-mentioned claim 7,

wherein the packaging sheet includes two end portions opposing each other in a second direction perpendicular to the first direction, the two end portions overlapping each other in a thickness direction of the packaging sheet to form a side-port pre-bond structure, the side-port pre-bond structure being the first pre-bond structure;

wherein the packaging sleeve further comprises a side seal extending in the first direction from the bottom opening to the top opening, the side seal being located at the side surface and comprising a second bond;

wherein the forming the joint further comprises:

forming the second bond, wherein the side-port pre-bond structure is illuminated to heat melt at least a portion of the side-port pre-bond structure to form the second bond to form a side seal.

9. The method for manufacturing a solar cell according to claim 7,

wherein the packaging container further comprises an ear flap located at the side surface, the top seal extending from the top surface to the side surface to form the ear flap, the ear flap and the side surface forming an ear flap pre-bond structure, the ear flap pre-bond structure being the first pre-bond structure; the side surface includes a third joint;

wherein the forming the joint further comprises:

forming the third bond, wherein the earflap pre-bond structure is illuminated to heat melt at least a portion of the earflap pre-bond structure to form the third bond, thereby bonding the earflap and the side surface to one another.

10. The manufacturing method according to the above-mentioned claim 7,

wherein the packaging container further comprises a flow guide member configured to be attached to a top surface of the packaging container and to pour out contents of the packaging container;

wherein the packaging container comprises a top seal, the top seal comprises two sides opposite to each other in an extending direction perpendicular to the top seal, the flow guide member is located on one of the two sides, the top surface and the flow guide member form a flow guide pre-bonded structure, and the flow guide pre-bonded structure is the second pre-bonded structure; the top surface includes a fourth bond;

wherein the forming a joint further comprises:

forming the fourth bonding portion, wherein the flow guide pre-bonding structure is illuminated to heat and melt at least a portion of the flow guide pre-bonding structure to form the fourth bonding portion, thereby bonding the flow guide member and the top surface to each other.

11. The method of manufacturing as set forth in claim 2,

the packaging container also comprises a straw assembly positioned on the side surface, the combination part comprises the straw assembly, the straw assembly comprises a straw and a pipe sleeve sleeved on the straw, the side surface and the pipe sleeve form a pipe sleeve pre-combination structure, and the pipe sleeve pre-combination structure is the second pre-combination structure; the side surface further includes a fifth junction;

wherein the forming the joint further comprises:

forming the fifth bond, wherein the pipe sleeve pre-bond structure is illuminated to heat melt at least a portion of the pipe sleeve pre-bond structure to form the fifth bond, thereby bonding the pipe sleeve and the side surface to each other.

12. The manufacturing method according to claim 2, wherein the substrate is a glass substrate,

wherein the package precursor comprises a package sleeve comprising a top opening and a bottom opening opposite to each other in a first direction;

wherein the packaging container further comprises a flow guide member configured to be attached to a top surface of the packaging container and to guide contents of the packaging container out of the packaging container, the top opening and the flow guide member forming a top opening pre-bond structure, the top opening pre-bond structure being the second pre-bond structure; the top surface further includes a sixth bonding portion,

wherein the forming a joint further comprises:

forming the sixth bonding portion, wherein the top opening pre-bonding structure is illuminated to heat and melt at least a portion of the top opening pre-bonding structure to bond the flow guide member and the top opening to each other.

13. The manufacturing method according to claim 12, wherein the substrate is a glass substrate,

wherein the bottom opening comprises a bottom opening pre-bond structure, the bottom opening pre-bond structure being the first pre-bond structure, the packaging container further comprising a bottom seal, the bottom seal being located at the bottom surface, the bottom seal comprising a seventh bond;

wherein the forming the joint includes:

forming the seventh bond, wherein the bottom opening pre-bond structure is illuminated to heat and melt at least a portion of the bottom opening pre-bond structure to form the seventh bond, thereby forming the bottom seal.

14. The manufacturing method according to claim 12, wherein the substrate is a glass substrate,

wherein the top surface has a mountain top shape, the top surface comprising an inclined plane and an ear wing extending to the inclined plane, the ear wing and the inclined plane forming an ear wing pre-bond structure, the ear wing pre-bond structure being the first pre-bond structure; the top surface further comprises an eighth bond;

wherein the forming a joint further comprises:

forming the eighth bonded portion, wherein the earflap pre-bonded structure is illuminated to heat and melt at least a portion of the earflap pre-bonded structure to form the eighth bonded portion, thereby bonding the earflap and the inclined surface to each other.

15. A manufacturing method according to claim 1, wherein the pre-bonded structure is obtained by folding a packaging sheet.

16. The manufacturing method according to claim 1, wherein the forming the joint further includes: compressing the pre-bonded structure.

17. The manufacturing method according to claim 1, wherein the light for illumination is a laser having a wavelength of 1000 to 1100nm emitted from a laser.

18. The manufacturing method according to claim 1, wherein the light for illumination is infrared light generated by a heat radiation source.

19. The production method according to claim 1, wherein the time of light irradiation is 0.1 to 10 seconds.

20. A packaging container produced by the production method according to any one of claims 1 to 19.