CN115783456B

CN115783456B - Packaging container and method for manufacturing the same

Info

Publication number: CN115783456B
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: 2024-01-30
Anticipated expiration: 2043-02-02
Also published as: CN115783456A

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 joint, wherein the forming the joint comprises: illuminating the pre-bond structure on the packaging precursor such that at least a portion of the pre-bond structure melts under heat. According to the invention, the pre-bonding structure on the packaging precursor is illuminated to heat and melt at least part of the pre-bonding structure to realize bonding, so that not only can the control on the shape of the heating area be improved, but also 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 the same

Technical Field

The present disclosure relates to the field of food packaging, and more particularly, to a packaging container and a method of manufacturing the same.

Background

Generally, liquid foods such as milk, yogurt, soup, etc. are sold in packaging containers made of aseptic packaging materials. Packaging containers are typically manufactured from packaging sheets by folding, sealing, etc. The packaging sheet comprises a pattern of fold lines, during the formation of the packaging container, the packaging sheet is first folded along the pattern of fold lines, then the longitudinal seams of the packaging sheet are bonded to form a packaging sleeve having upper and lower end openings, and then one of the end openings of the packaging sleeve is sealed and filled with liquid, and after filling of the liquid is completed, the other end opening is sealed, finally a packaging container filled with liquid food is formed.

Disclosure of Invention

The embodiment of the disclosure provides a packaging container and a manufacturing method thereof, wherein the pre-bonding structure on a packaging precursor is irradiated to enable at least part of the pre-bonding structure to be heated and melted to realize bonding, so that the control of the shape of a heating area 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 joint, wherein the forming the joint comprises: illuminating the pre-bond structure on the packaging precursor such that at least a portion of the pre-bond structure melts 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-bond structure comprises a stack of multi-layer packaging sheets; the second pre-bond structure includes the packaging sheet and a bonding member configured to bond to the packaging sheet.

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

In at least some embodiments, the multi-layer packaging sheet includes a first side and a second side opposite each other in a thickness direction of the packaging sheet; the illuminating the multilayer packaging sheet includes: 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 structure is the second pre-bond structure, the packaging sheet and the bonding member contact each other in a thickness direction of the packaging sheet to form a sheet member contact; illuminating the pre-bonding structure comprises: at least one of the packaging sheet and the bonding member is irradiated so that part or all of the sheet member contact portion is melted by heat, 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 includes: both the bonding member and the packaging sheet are illuminated.

In at least some embodiments, the packaging precursor comprises a packaging sleeve comprising a top opening and a bottom opening opposite each other in a first direction, at least one of the top opening and the bottom opening forming an end opening pre-bond structure, the end opening 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 and 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 comprises: forming the first bond, wherein the open-ended pre-bond structure is illuminated such that at least a portion of the open-ended pre-bond structure is melted by heat to form the first bond, thereby forming at least one of the top seal and the bottom seal.

In at least some embodiments, the packaging sheet includes two ends opposite to each other in a second direction, the second direction being perpendicular to the first direction, the two ends overlapping each other in a thickness direction of the packaging sheet to form a side opening pre-bond structure, the side opening 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: and forming the second joint, wherein the side opening pre-joint structure is irradiated so that at least part of the side opening pre-joint structure is melted by heating to form the second joint, thereby forming a side seal.

In at least some embodiments, the packaging container further comprises an ear flap 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 bond; wherein the forming the joint further comprises: and forming the third bonding portion, wherein the tab pre-bonding structure is irradiated with light to heat and melt at least part of the tab pre-bonding structure to form the third bonding portion, thereby bonding the tab and the side surface to each other.

In at least some embodiments, the packaging container further comprises a baffle member configured to be connected to a top surface of the packaging container and pour out the contents of the packaging container; wherein the packaging container comprises a top closure comprising two sides opposite to each other in a direction perpendicular to the extension of the top closure, the flow guiding member being located on one of the two sides, the top surface and the flow guiding member forming a flow guiding pre-coupling structure, the flow guiding pre-coupling structure being the second pre-coupling structure; the top surface includes a fourth bond; wherein the forming of the joint further comprises: and forming the fourth bonding portion, wherein the flow guiding pre-bonding structure is irradiated with light to form the fourth bonding portion so that at least part of the flow guiding pre-bonding structure is melted by heating, thereby bonding the flow guiding 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 bond; the forming the joint further includes: and forming the fifth bonding portion, wherein the pipe sleeve pre-bonding structure is irradiated with light to melt at least a part of the pipe sleeve pre-bonding structure by heat to form the fifth bonding portion, thereby bonding the pipe sleeve and the side surface to each other.

In at least some embodiments, the packaging precursor comprises a packaging sleeve comprising a top opening and a bottom opening opposite each other in a first direction; wherein the packaging container further comprises a flow guiding member configured to be connected to a top surface of the packaging container and to guide the contents of the packaging container out of the packaging container, the top opening and the flow guiding 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 bond, wherein the forming the bond further includes: and forming the sixth bonding portion, wherein the top opening pre-bonding structure is irradiated with light to melt at least part of the top opening pre-bonding structure by heating, so that the flow guiding member and the top opening 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 of the joint comprises: and forming the seventh joint, wherein the bottom opening pre-joint structure is irradiated by light so that at least part of the bottom opening pre-joint structure is melted by heating to form the seventh joint, thereby forming the bottom seal.

In at least some embodiments, the top surface has a gable top shape, the top surface includes an inclined surface and an ear wing extending to the inclined surface, the ear wing and the inclined surface forming an ear wing pre-bond structure, the ear wing pre-bond structure being the first pre-bond structure; the top surface further includes an eighth bond; wherein the forming of the joint further comprises: and forming the eighth bonding portion, wherein the tab pre-bonding structure is irradiated with light to heat and melt at least part of the tab pre-bonding structure to form the eighth bonding portion, thereby bonding the tab and the inclined surface to each other.

In at least some embodiments, the pre-bonded structure is obtained by folding a packaging sheet.

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

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

In at least some embodiments, the illuminating light is infrared light generated by a heat 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 manufacturing method.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure, not to limit the present disclosure.

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

FIG. 2 is a schematic view of a packaging sleeve provided in an embodiment of the present disclosure;

FIG. 3 is a schematic view of a packaging container according to an embodiment of the present disclosure;

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

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

FIG. 6 is a schematic structural view of a second pre-bond structure according to an embodiment of the present disclosure;

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

FIG. 8 is a schematic structural view of the first pre-bonding structure of FIG. 7;

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

FIG. 10 is a schematic view of a further packaging container according to 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 schematic view of a partial structure of an apparatus for manufacturing packaging containers provided in an embodiment of the present disclosure;

FIG. 13 is a schematic view of a forming bar according to an embodiment of the present disclosure;

FIG. 14 is a schematic view of a seal 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 schematic plan view of the heat radiating assembly of FIG. 15;

FIG. 17 is a schematic cross-sectional view of a blocking member of the heat radiation assembly of FIG. 15;

FIG. 18 is a schematic structural view of another heat radiating assembly provided by an embodiment of the present disclosure;

FIG. 19 is a schematic plan view of the heat radiating assembly of FIG. 18;

FIG. 20 is a schematic plan view of a sheet radiator provided in an embodiment of the present disclosure;

FIG. 21 is a schematic cross-sectional view of a blocking member of the heat radiation assembly of FIG. 18;

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

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

FIG. 23 is a schematic view of a heat radiating member according to an embodiment of the present disclosure;

FIG. 24 is a schematic plan view of the heat radiating assembly of FIG. 23;

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

fig. 26 is a flow chart illustrating a method of manufacturing a packaging container according to an embodiment of the present disclosure.

Detailed Description

For the purpose of making 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 clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be 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 cap, a straw assembly, etc., to the packaging sheet.

In order to obtain a better bonding effect, the bonding site is usually preheated before bonding. For example, in order to improve the bonding effect of the end openings, which are provided with a better tightness, the packaging device is provided with a heating nozzle for preheating the area of the end openings to be sealed before the end openings are sealed.

When in heating, the heating nozzle stretches into the sleeve from the end opening of the packaging sleeve, a plurality of spray holes are arranged on the side wall of the heating nozzle, and gas sprayed out of each spray hole is utilized to heat 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 the subsequent sealing is facilitated. This heating mode is called "hot air heating mode".

In the above-mentioned hot air heating method, the shape of the heating area is uncontrollable due to the diffusibility of the gas as the heating medium, and the non-sealing area is inevitably heated, which prolongs the heating time and the manufacturing time of the packaging container, and decreases the yield per unit time and the production efficiency.

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 bonding portion provided on at least one of the top surface, the bottom surface, and the side surface; the manufacturing method comprises the following steps: forming a joint, wherein forming the joint comprises: the pre-bond structures on the package precursor are illuminated such that at least a portion of the pre-bond structures are melted by heat.

In embodiments of the present disclosure, "illumination" refers to the application of heat to the pre-bonded structure using light beam irradiation to melt (i.e., 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 a laser, and the laser is used to heat the pre-bonding structure, and when the temperature of the pre-bonding structure increases, the pre-bonding structure is heated and melted. In other embodiments, the illuminating beam is invisible light, such as infrared. The infrared radiation pre-combination structure is utilized, and after the pre-combination structure absorbs the infrared rays, the radiation energy is converted into heat energy to be heated.

In the method for manufacturing the packaging container provided by the embodiment of the present disclosure, the pre-bonding structure on the packaging precursor is irradiated to heat and melt at least part of the pre-bonding structure 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, 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, so that the heating process is more controllable, and further process optimization is facilitated; on the other hand, the proper light beam intensity or illumination time can be set according to actual needs, and the requirements of 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 "plurality" means two or more. The plurality of bonds may be distributed on one, two, or three of the top, bottom, and side surfaces, the number and location of the bonds in embodiments of the present disclosure are not limited.

The bonding portion is located/distributed on a surface, which means that the bonding portion is located within a range where the surface is located, and the bonding portion may or may not be in contact with the surface.

The invention is illustrated by the following examples. Detailed descriptions of known functions and known components may be omitted as so as to not obscure the description of the embodiments of the present invention. When any element of an embodiment of the present invention appears in more than one drawing, the element may be referred to by the same reference numeral in each drawing.

In the presently disclosed embodiments, "packaging precursor" refers to an intermediate stage, unshaped packaged product prior to forming the final packaging container, the packaging precursor including, but not limited to, packaging sheet, packaging sleeve, and the like.

Fig. 1 is a schematic plan view of a packaging sheet provided in an embodiment of the present disclosure. Fig. 2 is a schematic structural view of a packaging sleeve provided in 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 layer and the inner layer are made of a polyethylene material, such as PE.

As shown in fig. 1, for example, the packaging sheet 1 includes a folding pattern including: a first fold line F1 and a second fold line F2. At least part of the first fold line F1 is used to form the circumference of the top of the packaging container. At least part of the second fold line F2 is used 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-top or mountain-top, and the first folding line F1 may be a straight line or a periodically repeated arc line according to the shape of the top.

For example, in fig. 1, the first folding line F1 is a straight line extending in the second direction (for example, the X direction shown in the drawing), whereby a flat-top-shaped packaging container can be formed. When the first folding line F1 is a periodically repeated arc, a gable-top packaging container may be formed. The second fold line F2 extends in the X-direction, which is advantageous for forming a stable bottom of 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 (for example, a Y direction shown in the drawing). The first region S1 is for forming a top surface of the packaging container, the third region S3 is for forming a bottom surface of the packaging container, and the second region S2 is for forming a 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 zone S11 and a bottom sealing zone S31, respectively, of the packaging container. The third fold line F11 is located in the first region S1 and the fourth fold line F31 is located in the third region S3. In the Y direction, the third fold line F11 is located on the side of the first fold line F1 remote from the second fold line F2, and the fourth fold line F31 is located on the side of the second fold line F2 remote from the first fold line F1.

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

For example, as shown in fig. 1, the folding pattern further comprises fifth and sixth folding lines E1, E2 extending in a first direction (e.g. 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 forming the packaging container, the packaging sleeve 10 of fig. 2 with two end openings can be formed by joining the first seam area T1, the second seam area T2 of the packaging sheet 1 to each other.

It should be noted that, to avoid confusion, the fold lines shown in fig. 1 and 2 are only some of the fold lines in the fold pattern, and not all of the fold lines. For example, crease lines and the like for top sealing and bottom sealing are also designed in the first region S1 and the third region S3, respectively. In addition, the packaging sheet 1 may be provided with an opening area for forming a spout or pouring spout, according to the actual design requirements, and reference is specifically made to the related designs of the existing similar products, which are not shown here.

Fig. 3 is a schematic structural view of a packaging container according to an embodiment of the present disclosure.

For example, as shown in fig. 1, 2 and 3, in the process of manufacturing the packaging container 100, first the first seam region T1, the second seam region T2 of the packaging sheet 1 of fig. 1 are bonded to each other to form the flat packaging sleeve 10 of fig. 2. The packaging sleeve 10 of fig. 2 is then unfolded into a three-dimensional packaging sleeve 10, and the bottom opening 10B is folded and sealed. Next, the liquid food is poured from the open top opening 10A in several steps, 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), and the packaging container 100 includes: a top surface 101, a bottom surface 103, and side surfaces 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, that is, a bonding portion one CT101, a bonding portion two CT102, a bonding portion three CT103, and a bonding portion four CT104, which are distributed on the top surface 101, the bottom surface 103, and the side surfaces 102.

For example, a method for manufacturing the packaging container 100 provided in 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. packaging sheet 1 or packaging sleeve 10) such that at least part of the pre-bonded structure melts by heat. That is, the pre-bonded structure is irradiated with a light beam such as laser or infrared rays, so that at least a part of the pre-bonded structure is melted by heat generated by the light beam irradiation, and after the melted part is solidified, a bonded portion is formed.

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

The first type is a bond between packaging sheets, for example, a first CT101, a second CT102, and a third CT103 of a bond in the packaging container 100 are bonds between multiple packaging sheets, which will be hereinafter referred to as a first pre-bond structure;

the second type is the bond between the packaging sheet and the bonding means (e.g. straw and its kit, lid, etc.), for example the bond four CT104 in the packaging container 100 is the bond between the packaging sheet and the straw tube sleeve, hereinafter referred to as the second pre-bonding structure.

The two types of pre-bonded structures and the method of forming the bonded portion by the two types of pre-bonded structures are described below, respectively.

Fig. 4 is an illumination schematic of a first pre-bonding structure according to an embodiment of the disclosure. As shown in fig. 4, for example, the first pre-bonding structure ST1 includes a plurality of packaging sheets 1 (for example, two layers as shown in the drawing) arranged in a stacked manner.

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 contacts each other in the thickness direction (e.g., the Z direction shown in the drawing) of the packaging sheet 1 to form a sheet contact portion (e.g., one first sheet contact portion M1 shown in the drawing); at this time, the illuminating the pre-bonding structure in the step S10 includes: the multilayer packaging sheet 1 is illuminated so that part or all of the first sheet contact 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 opposite 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, only the first side SD1 of the multilayer packaging sheet 1 is irradiated with the first light beam L1, or only the second side SD2 of the multilayer packaging sheet 1 is irradiated with the second light beam L2, or the first side SD1 and the second side SD2 are irradiated with the first light beam L1, the second light beam L2, respectively, and during these three laser irradiation processes, since the laser light heats the opaque paperboard layer 14, the paperboard layer 14 transfers heat to other layers adjacent to the paperboard layer 14, and when transferred to the inner layer 11, the first sheet contact portion M1 is partially or entirely melted by heat, and the melted first sheet contact portion M1 is cured to complete bonding to form a bonding portion. Herein, "melting" refers to the change of a material from a solid state to a liquid state under the action of light beam irradiation. The outer layer 15 also has some signs of melting, but is not apparent.

The embodiments of the present disclosure 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, and in other embodiments, the first light beam L1 and the second light beam L2 may be incident on the outer layer 15 in a perpendicular incidence manner, that is, in the Z direction, which is not limited in the embodiments of the disclosure.

In the embodiment of the present disclosure, the packaging sheet 1 includes, 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-blocking and oxygen-blocking functions. The barrier layer 12 has a light blocking effect. The cardboard layer 14 provides support for the packaging sheet 1. The adhesive layer 13 plays an adhesive role. It will be appreciated that the layers of the packaging sheet 1 in fig. 4 are only illustrative and that in other embodiments other functional layers may be included.

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

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

In some embodiments, the adhesive layer 13 comprises a plastic suitable for creating a strong bond by ionic or covalent bonding to 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 acid, such as acrylic acid, methacrylic acid, crotonic acid, acrylic esters, acrylic ester derivatives or carboxylic acids and hydrides bearing double bonds, such as maleic anhydride, or at least two of the above. Among these compounds, polyethylene-maleic anhydride graft polymers (EMAH), ethylene-acrylic acid copolymers (EAA) or ethylene-methacrylic acid copolymers (EMAA) are preferred, such as Bynel and Nucrel 0609HSA from DuPont, or Escor 6000ExCo from Exxon Mobil chemical.

In some embodiments, the paperboard layer 14 imparts dimensional stability to the packaging container, typically having a single or multi-layer structure, such as Stora Enso Natura T Duplex double-layer coating of the paperboard layer 14 to finnish dawn enroute.

In some embodiments, the outer layer 15 comprises a polyethylene material, such as LDPE 19N430 from Ineos GmbH, germany (lneos). The embodiment of the present disclosure is described taking an example in which the first pre-bonding structure ST1 includes two layers of the packaging sheet 1, it is to be understood that the first pre-bonding structure ST1 includes the packaging sheet 1 that may further include two or more layers (for example, three or more layers, etc.), in which case the number of the first sheet contact portions M1 may be greater than one.

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

In the embodiment of the present disclosure, the two packaging sheets 1 overlap each other in the Z-direction to form an overlapping region in which the first sheet contact portion M1 is located.

In addition to the illumination means described above, the multi-layer packaging sheet may be illuminated by other illumination means so that part or all of the sheet contact portion is melted by heat.

Fig. 5 is another schematic view of illumination of the first pre-bonding 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 contact portions of the two packaging sheets 1, that is, the second sheet contact portion M2 and the third sheet contact portion M3, respectively, to melt the second sheet contact portion M2 and the third sheet contact portion M3, and the second sheet contact portion M2 and the third sheet contact portion M3 to be melted come into contact with each other and are solidified to achieve bonding.

For example, in the illumination mode of fig. 5, two packaging sheets in a separated state are first irradiated and then attached to each other, whereas in the illumination mode of fig. 4, two packaging sheets are attached together and then irradiated. From the test results, the manner shown in fig. 4 allows more heat to be transferred to the sheet contact portion, thereby resulting in higher bond strength and better sealing of the bond. Therefore, the illumination method of fig. 4 is preferable.

Fig. 6 is a schematic structural view of a second pre-bonding structure according to an embodiment of the present 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 (e.g., the Z direction shown in the drawing) of the packaging sheet 1 to form the sheet member contact portion N. At this time, the illuminating the pre-bonding structure in the step S10 includes: at least one of the wrapping sheet 1 and the bonding member 3 is irradiated so that part or all of the sheet member contact portion N is melted by heat, thereby bonding the bonding member 3 and the wrapping sheet 1 to each other.

For example, the coupling member 3 includes, but is not limited to: a cap for detachable connection with the packaging container or a tube sleeve outside the straw, etc. As shown in fig. 6, the joining 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 light-packaging sheet 1 and the joining member 3 is illuminated.

For example, the packaging sheet 1, or the joining member 3, or both the packaging sheet 1 and the joining member 3 may be irradiated with light. When both the packaging sheet 1 and the joining member 3 are irradiated, 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, the second light beam L2, respectively.

In addition, 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, and then joining them. For another example, the sheet member contact portion on the packaging sheet 1 is irradiated first, and then the packaging sheet 1 is bonded to the bonding member 3.

In the embodiment of the disclosure, the first light beam L1 and the second light beam L2 are, for example, laser light beams. The absorptivity of a material to a laser beam depends on the material (surface shape, color) and the laser wavelength: the more absorptive the material, the more conducive the heating efficiency to shorten the heating time. The inventor repeatedly tests and finds that when the selected laser beam is the laser with the wavelength of 1000-1100 nm, for example, the laser with the wavelength of about 1064nm, the absorption efficiency of the packaging sheet to the laser is better, and the surface of the packaging product is not damaged. For example, the laser irradiation time is 0.1 to 10 seconds, preferably 1 to 5 seconds, and more preferably 1 to 3 seconds.

In selecting the 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 λ=9.3 μm and 10.2 μm (mainly to obtain better absorption of the material) by adjusting the gas composition, and most of nonmetallic materials or oxidized materials can use CO2 laser.

2) Ultraviolet laser: the wavelength is 355nm.

3) Fiber laser: the wavelength is 1064nm, and the fiber laser is also a solid-state laser. The pumping medium is a clad fiber.

The inventor has found through a lot of experiments that the laser with the wavelength of 10.6 μm can realize that the film layer and the paper layer of the product can be directly carbonized and burnt, although the appearance of the packaging box can not meet the requirement. The laser light having a wavelength of 355nm is a cold laser light and has substantially no heat. The laser beam having a wavelength of 1064nm is preferable because it has the highest absorption efficiency and the highest heating rate after process adjustment, 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 illustrative, and other layer structures may be also possible, for example, the first pre-bonding structure ST1 includes three layers and more packaging sheets, and the second pre-bonding structure ST2 includes two layers and more packaging sheets.

In the conventional method for manufacturing the packaging container, the heating is generally performed by spraying hot air (abbreviated as hot air) onto the packaging sheet, and the production efficiency is low due to the long heating time.

In the embodiment of the disclosure, at least part of the first pre-bonding structure ST1 or at least part of the second pre-bonding structure ST2 is heated and melted by adopting a light beam irradiation mode, 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, 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, so that the heating process is more controllable, and further process optimization is facilitated; on the other hand, the proper light beam intensity or illumination time can be set according to actual needs, and the requirements of different types of combination structures can be met more flexibly.

In embodiments of the present disclosure, the shape of the packaging container may be varied, such as a flat top shape (fig. 3), a beveled top shape (fig. 9), or a gable top shape (fig. 10).

The process of forming each joint portion on the flat top-shaped packaging container 100 shown in fig. 3 will be described below.

As shown in fig. 2, for example, the packaging sleeve 10 includes a top opening 10A and a bottom opening 10B that are opposed 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-bonding structure, which is the aforementioned first pre-bonding structure. For example, the open-top pre-bond structure of the top opening 10A is folded from a packaging sheet 1 located in the top sealing zone S11, which comprises two layers of packaging sheet 1, for example a first pre-bond structure ST1 as shown in fig. 4. Similarly, the open-ended pre-bond structure of the bottom opening 10B is folded from a packaging sheet 1 located in the bottom sealing zone S31, comprising two layers of packaging sheet 1, for example a first pre-bond structure ST1 as shown in fig. 4.

As shown in fig. 3, for example, the packaging container 100 further includes 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, and 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 junction CT101 (i.e., a first junction), and the bottom seal also includes a junction (i.e., a first junction, not shown).

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

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

For example, referring to fig. 3, a top seal 111 is illustrated. When the two-layer packaging sheet 1 of the first pre-bonding structure ST1 of the top seal 111 is irradiated with the light beam, the first sheet contact portion M1 in the two-layer packaging sheet 1 is melted by heating, so that the two-layer packaging sheet 1 is bonded to each other to form the bonding portion-CT 101 in 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 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 are described by way of example, and 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 top seal or bottom seal forming process, the heating is generally performed by spraying hot air, and the production efficiency is low due to the longer heating time.

In the embodiments of the present disclosure, the bonding is achieved by irradiating the open-top or open-bottom end pre-bonding structure with light such as laser or infrared light, and causing at least part of the open-top end pre-bonding structure to melt by heat. On one hand, the forming time of the end seal is greatly shortened, and the production efficiency is improved; on the other hand, 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, so that the heating process is more controllable, and further process optimization is facilitated.

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

Fig. 7 is a schematic cross-sectional view of a side seal of a packaging sheet provided by an embodiment of the present disclosure. Fig. 8 is a schematic structural view of the first pre-bonding structure in fig. 7.

As shown in fig. 7 and 8, for example, the first end portion D1 and the second end portion D2 of the packaging sheet 1 overlap each other in the Z-direction to form a first pre-joined structure ST1 including the three-layer packaging sheet 1, the three-layer packaging sheet 1 including two first sheet contacting portions M1, one of the first sheet contacting portions M1 including two inner layers 11, and the other first sheet contacting portion M1 including 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. The side seal 112 includes a second junction CT102 (i.e., a second junction).

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

step S112: a second junction CT102 is formed, wherein the side opening pre-junction structure formed by the first end D1 and the second end D2 (i.e., the first pre-junction structure) is illuminated to heat and melt at least part of the side opening 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 in the three-layer packaging sheet 1 are melted by heat, so that the three-layer packaging sheet 1 is bonded to each other to form a bonding portion two CT102 in fig. 3, thereby forming the side seal 112.

In the embodiment of the present disclosure, the bonding is achieved by irradiating the first pre-bonding structure of the side opening with a light beam such as laser or infrared rays, and causing at least part of the first pre-bonding structure to be melted by heat. 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 at the side surface 102, the top seal 111 extending from the top surface 101 to the side surface 102 to form the ear flap 113, the ear flap 113 and the side surface 102 constituting an ear flap pre-bond structure, which is the aforementioned first pre-bond structure.

Since the tab 113 is folded from the top seal 111, the tab 113 comprises at least two layers of packaging sheet 1. For example, the first pre-bonding structure comprises one layer of packaging sheet 1 in the side surface 102 and one layer of packaging sheet 1 in the ear flap 113, and the sheet contact portion in the two layers of packaging sheet 1 comprises two outer layers.

Referring to fig. 3, the side surface 102 includes a joint portion three CT103 (i.e., a third joint portion), and in the method for manufacturing the packaging container 100 according to the embodiment of the present disclosure, step S10 further includes:

step S113: the joint three CT103 is formed in which an ear wing pre-joint structure formed of the ear wing 113 and the side surface 102 is irradiated to form the joint three CT103, thereby joining the ear wing 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 wing 113 and the side surface 102 are bonded to each other to form a bonding portion two CT102 in fig. 3, thereby bonding between the ear wing 113 and the side surface 102 is achieved.

In the embodiments of the present disclosure, the bonding is achieved by irradiating an ear wing pre-bonding structure formed of an ear wing and a side surface with light such as laser or infrared rays, and causing at least part of the ear wing pre-bonding structure to be melted by heat. On one hand, the time for combining the lug wings and the side surfaces 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 including a straw and a tube sleeve 114 sleeved on the straw, the side surface 102 and the tube sleeve 114 forming a tube sleeve pre-coupling structure, the tube sleeve pre-coupling structure being the aforementioned second pre-coupling structure. The second pre-bond structure is, for example, a second pre-bond structure ST2 shown in fig. 6, wherein the sleeve 114 is the bonding member 3 and the side surface 102 comprises a layer of packaging sheet 1.

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

step S114: the junction four CT104 is formed in which the illumination forms a shroud pre-bonding structure from the side surface 102 and the shroud 114 to form the junction four CT104, thereby bonding the shroud 114 and the side surface 102 to each other.

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

In the embodiment of the present disclosure, the bonding is achieved by irradiating the shroud pre-bonding structure formed of the side surface and the shroud with light such as laser light or infrared rays, and causing at least part of the shroud pre-bonding structure to be melted by heat. 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 an embodiment of the present disclosure. The process of forming each joint portion on the slanted-top-shaped 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), and the packaging container 200 includes: a top surface 201, a bottom surface 203, and side surfaces 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, that is, a bonding portion one CT201, a bonding portion two CT202, a bonding portion three CT203, and a bonding portion four CT204, which are distributed on the top surface 201, the bottom surface 203, and the side surfaces 202.

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

step S20: the bonds are formed (e.g., bond one CT201 to bond four CT204, where forming the bonds includes wrapping the pre-bond structures on the precursor by illumination (similar to wrapping sheet 1 or wrapping sleeve 10, but for forming wrapping container 200) such that at least a portion of the pre-bond structures are melted by heating.

Of the first to fourth CT201 to 204, the first CT201, the second CT202, and the third CT203 are formed of a first pre-bonded structure including a multilayer packaging sheet, and the fourth CT204 is formed of 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: the joint of the top seal 211-CT 201 and the bottom seal-is formed, wherein light is applied to the respective end opening pre-joint structures of the top opening and the bottom opening of the packaging sleeve used to form the packaging container 200, which are first pre-joint structures, to form the joint of the top seal 211-CT 201 and the bottom seal-is formed, respectively, to form the top seal 211 and the bottom seal, such that at least part of the end opening pre-joint structures are melted by heat.

In the embodiment of the disclosure, the specific forming process of the junction portion CT201 may refer to the forming process of the junction portion CT101 of the packaging container 100, and will not be described herein.

In the embodiments of the present disclosure, the bonding is achieved by irradiating the open-top or open-bottom end pre-bonding structure with light such as laser or infrared light, and causing at least part of the open-top end pre-bonding structure to melt by heat. On one hand, the forming time of the end opening is greatly shortened, and the production efficiency is improved; on the other hand, 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 laser heating mode is more regular, so that the heating process is more controllable, and further process optimization is facilitated.

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

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

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

In the disclosed embodiment, the side seal 212 is located on the side surface 202 of the packaging container 200. At least part of the side opening pre-bonding structure is melted by heat by irradiating the side opening pre-bonding structure with light such as laser light or infrared rays, thereby achieving bonding. 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 extending from the top surface 201 to the side surface 202 to form the ear flap 213, the ear flap 213 and the side surface 202 constituting an ear flap pre-bond structure, the ear flap pre-bond structure being the first pre-bond structure described above. Since the tab 213 is folded from the top seal 211, the tab 213 comprises at least two layers of packaging sheet material.

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

step S213: a joint three CT203 is formed in which an ear wing pre-joint structure formed of the ear wing 213 and the side surface 202 is irradiated with light to melt at least part of the ear wing pre-joint structure by heat to form the joint three CT203, thereby joining 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 joint portion three CT203 may refer to the forming process of the joint portion three CT103 of the packaging container 100, which is not described herein.

In the embodiments of the present disclosure, the bonding between the tab and the side surface is achieved by irradiating the tab pre-bonding structure formed by the tab and the side surface with light such as laser or infrared rays, and causing at least part of the tab pre-bonding structure to be melted by heat. On one hand, the time for combining the lug wings and the side surfaces 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 comprises a flow guiding member 214, the flow guiding member 214 being configured to be connected to the top surface 201 of the packaging container 200 and to guide out the content of the packaging container 200.

For example, in a direction perpendicular to the extension of top seal 211, top seal 211 includes two sides 211a, 211b (e.g., left and right sides of top seal 211 as shown in the figures) opposite each other, and flow directing member 214 is located on one of the two sides 211a, 211b, as shown on the side 211 a. The top surface 201 and the flow directing member 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, in the method for manufacturing the packaging container 200 provided in the embodiment of the present disclosure, the top surface 201 includes a fourth CT204 (i.e., a fourth bonding portion), and step S20 further includes:

step S214: a junction four CT204 is formed in which the flow guiding pre-junction formed by the top surface 201 and the flow guiding member 214 is illuminated so that at least part of the flow guiding pre-junction is melted by heat to form the junction four CT204, thereby bonding the flow guiding member 214 and the top surface 201 to each other.

For example, at least one of the baffle member 214 and the packaging sheet may be irradiated with the second light beam L2, such as irradiating an outer layer of the packaging sheet, thereby causing a portion of the packaging sheet to be melted by heat to form the bonding portion four CT204, thereby bonding the baffle member 214 and the packaging sheet to each other.

In the embodiments of the present disclosure, the bonding between the flow guiding member and the top surface is achieved by irradiating the flow guiding pre-bonding structure formed by the flow guiding member and the top surface with light such as laser or infrared rays, and causing at least part of the flow guiding pre-bonding structure to be melted by heat. 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 still another packaging container according to an embodiment of the present disclosure. The process of forming each joint portion on the gable-top packaging container 300 shown in fig. 10 is described below.

As shown in fig. 10, the packaging container 300 is formed from a packaging precursor (including a packaging sheet or a packaging sleeve), and the packaging container 300 includes: 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 bonding portions, namely, a bonding portion one CT301, a bonding portion two CT302, a bonding portion three CT303, a bonding portion four CT304, and a bonding portion five CT305, which are distributed on the top surface 301, the bottom surface 303, and the side surfaces 302.

For example, a method for manufacturing the packaging container 300 provided in 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-bonding structures on the packaging precursor (similar to the packaging sheet 1 or packaging sleeve 10, but for forming the packaging container 300) such that at least part of the pre-bonding structures are melted by heat. That is, the pre-bonded structure is first irradiated with a light beam such as laser or infrared rays so that at least a part of the pre-bonded structure is melted by heat generated by the light beam irradiation, and after the melted part is solidified, a bonded portion is formed.

Of the first to fifth CT301 to 305, the second CT302, the third CT303, the fourth CT304, and the fifth CT305 are formed of a first pre-bonded structure including a multi-layered packaging sheet, and the first CT301 is formed of a second pre-bonded structure including a packaging sheet and a bonding member.

For example, the packing sleeve for forming the packing container 300 includes a top opening and a bottom opening opposite to each other in the X-direction (the top opening and the bottom opening of the packing sleeve 10 of fig. 2 may be referred to, except that the top opening of the packing container 300 is different in shape and size from the top opening of the packing container 200 for coupling with the flow guiding member);

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

Fig. 11 is a schematic structural view of a flow guiding member according to an embodiment of the present disclosure. As shown in fig. 11, for example, the flow guiding member 314 includes a tubular portion 314a and a boss portion 314b connected to the tubular portion 314a, the boss portion 314b being for connection with 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 includes 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 CT301 (i.e., a sixth bonding portion), and in the method for manufacturing the packaging container 300 according to the embodiment of the present disclosure, step S30 includes:

step S311: a junction-CT 301 is formed in which the flow-guiding pre-junction structure formed by the top opening and the boss portion 314b is illuminated so that at least part of the flow-guiding pre-junction structure is melted by heat to join the boss portion 314b and the top opening 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, the outer layer of the packaging sheet may be irradiated with the second light beam L2, so that a part of the packaging sheet is melted by heat to form a joint portion CT301, thereby joining the boss portion 314b and the packaging sheet to each other.

In the embodiment of the present disclosure, the combination between the flow guiding member and the top opening is achieved by irradiating the flow guiding pre-combination structure formed by the flow guiding member and the top opening with light such as laser or infrared rays, and causing at least part of the flow guiding pre-combination structure to be melted by heat. 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 provided in the embodiment of the present disclosure, step S30 further includes:

step S312: a joint second CT302 is formed in which a side opening pre-joint structure formed by both end portions of a packaging sheet (see, for example, packaging sheet 1 of fig. 1) is irradiated so that at least part of the side opening pre-joint structure is melted by heat, the side opening pre-joint structure being a first pre-joint structure to form the joint second CT302, thereby forming a side seal 312.

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

In the disclosed embodiment, the side seal 312 is located on the side surface 302 of the packaging container 300. At least part of the side opening pre-bonding structure is melted by heat by irradiating the side opening pre-bonding structure with light such as laser light or infrared rays, thereby achieving bonding. 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 forming a top opening pre-bonding structure, which is the aforementioned first pre-bonding structure; since the ear panels 313 are folded from the top surface 301, the ear panels 313 comprise at least two packaging sheets.

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

step S313: the joint triple CT303 is formed in which the top-opening pre-joint structure formed by the ear wings 313 and the inclined surface 316 is irradiated with light so that at least part of the top-opening pre-joint structure is melted by heat to form the joint triple CT303, thereby joining the ear wings 313 and the inclined surface 316 to each other.

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

In the embodiment of the present disclosure, the bonding between the lug and the inclined surface is achieved by irradiating the top opening pre-bonding structure formed by the lug and the inclined surface with light such as laser or infrared rays, and causing at least part of the top opening pre-bonding structure to be melted by heat. On one hand, the time for combining the lug wings and the inclined 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.

For example, the bottom opening of the packaging sleeve used to form the packaging container 300 (see bottom opening 10B of packaging sleeve 10 of fig. 2) includes a bottom opening pre-bond that is the first pre-bond described above, and as shown in fig. 10, the packaging container 300 further includes a bottom seal 315, the bottom seal 315 being located on the bottom surface 303.

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

step S314: including forming a bond four CT304, wherein the bottom opening pre-bond structure of the bottom opening is illuminated such that at least a portion of the bottom opening pre-bond structure is melted by heat to form the bond four CT304, thereby forming a bottom seal 315.

The specific formation of the bottom closure for the packaging container 300 may be referred to in the previous embodiments and will not be repeated here.

In embodiments of the present disclosure, at least a portion of the bottom opening pre-bond structure is melted by exposure to heat by light, such as laser light or infrared light, that illuminates the bottom opening pre-bond structure. 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 formed on the bottom surface 303 of the packaging container 300 after the bottom seal 315 is folded, and 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 pre-bond structure includes more than three layers of packaging sheet.

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

step S315: the joint five CT305 is formed in which the fin pre-joint structure composed of the fin 318 and the bottom surface 303 is irradiated such that at least part of the fin pre-joint structure is melted by heat to form the joint five CT305, thereby joining the fin 318 and the bottom surface 303 to each other.

In the embodiment of the present disclosure, the bonding is achieved by irradiating the tab pre-bonding structure formed by the tab and the bottom surface with light such as laser or infrared rays, and causing at least part of the tab pre-bonding structure to be melted by heat. On one hand, the bonding time between the wing panel 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 embodiment of the present disclosure, the forming the bonding portion further includes: compressing the pre-bonding structure. That is, when the bonding portion is formed, an external force is applied to the first pre-bonding structure or the second pre-bonding structure to make the bonding of the two more tight and firm. According to practical situations, the step of applying the external force can be performed simultaneously with the illumination, or can be performed 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 aforementioned packaging containers 100, 200 or 300.

The manufacturing method shortens the manufacturing time of the packaging container and improves the yield and the production efficiency in unit time, so that the packaging container obtained by the manufacturing method has the beneficial effects.

In the embodiments of the disclosure, when the light beam is laser light, the laser may be used to generate laser light, and when the light beam is infrared light, the radiation source may be used to heat to generate infrared light. The infrared heating is to radiate an object 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 heating by a heat radiation mode. Because the infrared heating has higher electrothermal conversion efficiency, the production or manufacturing cost can be further reduced, and the energy loss is reduced.

In order to achieve infrared heating during production of packaging containers, embodiments of the present disclosure also provide an apparatus for manufacturing packaging containers, the apparatus comprising: a forming device and a heating device. The forming device comprises a forming rod, a sealing assembly and a packaging sleeve, wherein the sealing assembly 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 assembly and is configured to be combined with the sealing assembly; a gap is left between the end sheet and the seal assembly. The heating device includes a heat radiating assembly, wherein the heat radiating assembly is disposed in the gap and configured to heat the end sheet and the seal assembly in a heat radiating manner.

In the apparatus for manufacturing a packaging container provided in the above-described embodiments, the heat radiation assembly is provided in the gap between the end sheet and the seal assembly, and the end sheet and the seal assembly are heated by heat radiation, 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 complex structure, the shape, the size or the area of the heating area can be flexibly adjusted, and the heating effect is ensured.

2) The improvement requirements for the existing equipment are reduced compared with the laser heating mode. Since lasers are typically produced by lasers, it takes time to test or debug to study how the lasers are introduced in the device. The heat radiation assembly in the embodiment of the application is convenient to install, so that the improvement requirement on the existing equipment can be reduced.

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

In the embodiment of the disclosure, the wavelength range of the infrared rays is between 0.75 and 1000 micrometers. For example, the infrared spectrum can be divided into several bands: 0.75-3.0 micrometers is near infrared region; 3.0 to 6.0 micrometers is the mid-infrared region; 6.0-15.0 micrometers is far infrared region; 15.0-1000 μm is the far infrared region.

In embodiments of the present disclosure, no metal is included in both the packaging sheet and the bonding member, i.e., no aluminum is included in the packaging sheet. On the one hand, the absorption efficiency of infrared rays can be improved, because the non-metallic material has higher absorption efficiency of the infrared rays. On the other hand, the environmental friendliness can be improved, the recycling of the packaging container is facilitated, and the environmental pollution is reduced.

The invention is illustrated by the following specific examples. Detailed descriptions of known functions and known components may be omitted as so as to not obscure the description of the embodiments of the present invention. When any element of an embodiment of the present invention appears in more than one drawing, the element may be referred to by the same reference numeral in each drawing.

Fig. 12 is a partial schematic structural 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 provided in an embodiment of the present disclosure includes a molding device 400.

For example, the molding apparatus 400 includes a molding rod 410, a seal assembly 420, and a packaging sleeve 430. The packing sleeve 430 is sleeved on the forming rod 410. For example, the packing sleeve 430 includes two end openings, i.e., a first end opening 430A and a second end opening 430B, the first end opening 430A and the second end opening 430B being opposite to each other in the extending direction of the packing sleeve 430, and the packing sleeve 430 may be sleeved on the forming rod 410 through the second end opening 430B.

For example, the molding apparatus 400 may further include a rotation shaft 412, and a plurality of molding bars 410 are connected to the rotation shaft 412. When the rotation shaft 412 rotates (e.g., in a counterclockwise direction as shown in the drawing), the mold bar 410 rotates in the same direction by the rotation shaft 412. During rotation of the forming beam 410, the rotation shaft 412 may be slightly stopped at a position corresponding to a different device to perform the operations of applying a sealing assembly, heating or sealing to the packing sleeve 430.

For example, the apparatus 1000 may further include an applicator 440, and when the forming rod 410 is rotated to an application position corresponding to the applicator 440, a sealing assembly 420 is applied to the end of the forming rod 410 via the first end opening 430A using the applicator 440, the sealing assembly 420 being for engagement with the packaging sleeve 430 to seal the first end opening 430A.

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

For example, the forming rod 410 includes two ends, i.e., a first end 410A and a second end 410B, opposite to each other in the axial direction (e.g., Z1 direction shown in the drawing) of the forming rod 410, wherein the first end 410A is far from the rotation axis 412 and the second end 410B is near to the rotation axis 412. The sealing assembly 420 is applied to the end one 410A of the forming rod 410 and is connected to the end one 410A.

For example, packaging sleeve 430 includes an end sheet 431, end sheet 431 surrounding seal assembly 420 and for bonding with seal assembly 420. First end opening 430A is sealed or sealed when end sheet 431 is connected to seal assembly 420 along the dashed line shown in fig. 13.

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 seal assembly 420. For example, as shown in fig. 14, when the forming lever 410 is rotated to a heating position corresponding to the heat radiation assembly 450, the heat radiation assembly 450 is disposed in a gap 440G between the end sheet 431 and the seal assembly 420, and heats the end sheet 202 and the seal assembly 420 in a heat radiation manner.

The energy transferred by heating in the heat radiation manner is higher than that in the hot air heating manner. Because the hot air is indirectly heated, heat needs to be transferred to the hot air first and then to the heating target. The actual energy is mostly lost with the blowing of hot air. The heat radiation heating mode is that most heat directly acts on a heating target through heat radiation. Although there is also reflection and other losses, the total energy loss is much less than with hot air heating.

To achieve a heat radiation heating manner, the disclosed embodiments provide three different forms of heat radiation assemblies, in which the heat radiation assembly 500 of fig. 15 to 17 takes the form of a ring-shaped lamp tube, the heat radiation assembly 600 of fig. 18 to 22B takes the form of a sheet-shaped radiator, and the heat radiation assembly 700 of fig. 23 to 25 takes the form of a radiation wire. The three types of heat radiation components are respectively described below.

For example, as shown in fig. 14, the sealing assembly 420 includes a flow directing member 421, the flow directing member 421 including a tubular portion 422 and a flange 423 connected to the tubular portion 422. For example, the tubular portion 422 may be used to channel or pour out liquid from the packaging container. Flange 423 is used to connect with end sheet 431. For example, the seal assembly 420 may further include a cap (not shown) removably coupled to the flow directing member 421 that is threadably coupled to the tubular portion 422 to facilitate the repeatable opening or closing of the packaging container.

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

For example, as shown in fig. 15, heat radiation assembly 500 includes a heat radiation source, tube 510 configured to generate infrared light to heat end sheet 431 and flange 423. For example, the lamp tube 510 is ring-shaped and includes a filament 511 and two terminals 512 connected to the filament. The two terminals 512 provide electrical power to the filament 511, which when energized produces infrared radiation due to its resistance heating, which infrared radiation irradiates both the end sheet 431 and the flange 423 to effect heating of both. By heating end sheet 431 and flange 423 with tube 510, the heated area can be concentrated, facilitating melting of end sheet 431 and flange 423, making the two more tightly and securely bonded.

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

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

For example, as shown in FIG. 16, flange 423 has a first orthographic projection on a plane perpendicular to axial direction Z1 (e.g., the X1Y1 plane shown in FIG. 14), end sheet 431 has a second orthographic projection on the X1Y1 plane, the first orthographic projection falling into the second orthographic projection; the thermal radiation assembly 500 has a third orthographic projection on the X1Y1 plane, the third orthographic projection being located between and surrounding the first orthographic projection and the second orthographic projection. That is, tube 510 is positioned between packaging sleeve 430 and seal assembly 420, and in particular, between end sheet 431 and flange 423, in a radial direction R of forming bar 410 (i.e., any direction that diverges outward from the center of the forming bar in the X1Y1 plane, which radial direction R is perpendicular to the Z1 direction). In the case where the shaping rod 410 and the flow guide member 421 are coaxially disposed, the radial direction R of the shaping 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 assembly 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, thereby saving the heating time and fully utilizing the radiation energy.

For example, as shown in fig. 14, flange 423 includes boss 424 and boss side wall 425 connected to boss 424, and lamp tube 510 is located between end sheet 431 and boss side wall 425 in radial direction R of forming rod 410. In some embodiments, tube 510 and boss sidewall 425 have an overlap region, as viewed in the radial direction R, such that infrared radiation generated by tube 510 is directed toward boss sidewall 425.

As shown in fig. 13, upon engagement of end sheet 431 and seal assembly 420, end sheet 431 is urged in the direction indicated by the arrow toward boss sidewall 425 of seal assembly 420 and is connected to boss sidewall 425. In this embodiment, by positioning tube 510 between end sheet 431 and boss sidewall 425, simultaneous heating of end sheet 431 and boss sidewall 425 is achieved, thereby facilitating melting of end sheet 431 and boss sidewall 425, facilitating 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, i.e., the end face P1 is farther from the rotation axis 412 than the plane P2 in which the boss is located. In this embodiment, end sheet 431 is advantageously attached to boss sidewall 425 by providing end face P1 of end sheet 431 to be higher than plane P2 of boss 424.

For example, in the radial direction R of forming bar 410, the distance of tube 510 from boss sidewall 425 is shorter than the distance of tube 510 from end sheet 431. Boss sidewall 425 has a greater thickness than end sheet 431 and is therefore less susceptible to heating, which is advantageous for improving the heating effect on boss sidewall 425 by positioning tube 510 closer to boss sidewall 425. The closer the distance is, the better the heating effect is, as the practical conditions allow.

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

Fig. 17 is a schematic cross-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 intermediate sheet 432 and the tubular portion 422 of the flow guiding 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 regions on the packing sleeve and the flow guiding member, thereby avoiding the problems of deformation, poor sealing, and the like of these non-heating regions due to being erroneously heated.

For example, tube 510 includes a first side 510a and a second side 510b opposite each other in the axial direction Z1, wherein first side 510a is proximate intermediate sheet 432 and second side 510b is distal from intermediate sheet 432. The blocking member comprises a first blocking member 521, the first blocking member 521 being arranged on the first side 510a of the tube 510 and surrounding the flange 423 to block the infrared radiation generated by the tube 510 from impinging on the intermediate sheet 432, thereby avoiding false heating of the sheet inside the packaging sleeve.

For example, the first blocking member 521 extends in a plane perpendicular to the Z1 direction and is connected between the boss side wall 425 of the flange 423 and the packing sleeve 430, so that infrared radiation is more closely blocked from being radiated downward to the intermediate sheet 432. In some embodiments, the planar shape of the first blocking member 521 is annular.

For example, the tube 510 further includes 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 distant from the tubular portion 422. The blocking member further includes a second blocking member 522, the second blocking member 522 being positioned on the third side 510c of the tube 510 and surrounding the tubular portion 422 to block infrared light generated by the tube 510 from impinging on the tubular portion 422.

In some embodiments, in the radial direction R, the second barrier 522 is located between the tube 510 and the tubular portion 422. The second blocking member 522 is disposed 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 blocking member 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 barrier 522 is able to cover the tubular portion 422 as completely as possible. When the lamp tube 510 generates infrared radiation, it can radiate only to the boss sidewall 425, and is not erroneously heated because the tubular portion 422 is shielded by the second barrier 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 blocking member 423, the lamp tube 510 would emit infrared radiation upward, radiating to the operator or other components in the apparatus. In this embodiment, by providing the third blocking member 423 above the lamp tube 510, it is possible to minimize the damage to the operator's radiation and to other components, and to reduce light pollution.

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

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

While the embodiments of the present disclosure are described with reference to a single annular lamp, it is to be understood that in other embodiments of the present disclosure, two semicircular lamps may be used for heating, and the embodiments of the present disclosure do not limit the shape and structure of the lamps.

The inventors found that when the end sheet 431 and the flange 423 of the flow guide member are heated by the annular lamp tube 510, the four corner positions are insufficiently heated due to the annular lamp tube 510 being farther from the four corner positions of the end sheet 431. Even after the heating time is increased, the four corner positions are not heated. Although the manufacturing cost of the lamp tube is lower, the temperature of the wall of the lamp tube is also high, about 500 ℃, and operators can feel that skin is heated after the lamp tube is started, so that light pollution is easy to cause to hurt the operators. 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 radiating assembly. Fig. 18 is a schematic structural view of another heat radiating member provided in an embodiment of the present disclosure. Fig. 19 is a schematic plan view of the heat radiating 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-shaped radiator 610, and a support member 620 supporting the sheet-shaped radiator 610. The support member 620 is disposed to surround the flange 423 and has a receiving cavity 620V, and the sheet-shaped radiator 610 is located in the receiving cavity 620V to surround the flange 423. When the sheet radiator 610 is energized, infrared radiation is generated by the heat generated by the resistance of the sheet radiator, and the infrared radiation irradiates the flange 423 and the end sheet 431 through the support member 620, thereby heating both.

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

As shown in fig. 14, end sheet 431 is square in plan shape and includes corner regions 433. Boss 424 further includes ears 426 attached to boss sidewall 425. Ears 426 are joined to corner regions 433. When heating with annular tube 510, corner regions 433 are farther from annular tube 510, and under-heating may not be able to achieve a tight bond with tabs 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 regions 433 can be improved, which is advantageous in that it is closely combined with the ear wings 426.

In the embodiment of the present disclosure, the planar shape of the end sheet 310 is not limited to square, and may be triangular, circular, elliptical, or other shapes, and may be a symmetrical pattern or an asymmetrical pattern. Since the planar shape of the sheet-like radiator 610 is determined according to the planar shape of the end sheet 310, it may be a shape other than square accordingly, and the planar shape of the end sheet 310, the sheet-like radiator 610 is not limited in the embodiments of the present disclosure.

The term "square" as used herein includes, but is not limited to, square or rectangular, as long as it is generally quadrilateral, such as square or rectangular with rounded corners, and the like.

Fig. 20 is a schematic plan view of a sheet radiator provided in an embodiment of the present disclosure. For example, the orthographic projection of the sheet-shaped radiator 610 in the X1Y1 plane is wavy, which can increase the heating area of the infrared ray, and can make the power generated per unit area smaller, that is, the required current per unit length becomes smaller, and the temperature of the radiator also decreases.

For example, the number of the sheet-like radiators 610 is plural, and the plurality of the sheet-like radiators 610 are stacked in the radial direction of the forming rod 410 to enhance 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, flange 423 has a first orthographic projection on the X1Y1 plane and end sheet 431 has a second orthographic projection on the X1Y1 plane, the first orthographic projection falling into the second orthographic projection; the thermal radiation assembly 600 has a third orthographic projection on the X1Y1 plane, the third orthographic projection being located between and surrounding the first orthographic projection and the second orthographic projection. That is, in the radial direction R of shaped rod 410, sheet-like radiator 610 is located between packaging sleeve 430 and seal assembly 420, and in particular, between end sheet 431 and flange 423.

In this embodiment, by disposing the third orthographic projection of the heat radiation assembly 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-like radiator 610 can be simultaneously radiated onto the flange 423 and the end sheet 431 through the supporting member 620 to achieve simultaneous heating, thereby not only saving heating time, but also fully utilizing radiation energy.

For example, flange 423 includes boss 424 and boss sidewall 425 connected to boss 424, and sheet-like radiator 610 is located between end sheet 431 and boss sidewall 425 in radial direction R of forming rod 410. In some embodiments, the sheet-like radiator 610 and the boss sidewall 425 have overlapping areas when viewed in the radial direction R, so that infrared rays generated from the sheet-like radiator 610 are transmitted through the supporting member 620 to the boss sidewall 425, thereby improving the heating effect on the boss sidewall 425.

As shown in fig. 13, upon engagement of end sheet 431 and seal assembly 420, end sheet 431 is urged in the direction indicated by the arrow toward boss sidewall 425 of seal assembly 420 and is connected to boss sidewall 425. In this embodiment, by positioning sheet radiator 610 between end sheet 431 and boss sidewall 425, simultaneous heating of end sheet 431 and boss sidewall 425 may be achieved, thereby facilitating melting of end sheet 431 and boss sidewall 425, facilitating connection of the two.

For example, in the radial direction R of the forming bar 410, the distance from the sheet-like radiator 610 to the boss side wall 425 is shorter than the distance from the sheet-like radiator 610 to the end sheet 431. Boss side walls 425 have a greater thickness than end sheet 431 and are therefore less susceptible to heating, which is advantageous by locating sheet radiator 610 closer to boss side walls 425 to enhance the heating effect on boss side walls 425. The closer the distance is, the better the heating effect is, as the practical conditions allow.

For example, the support member 620 includes a first wall 621 and a second wall 622 extending in the axial direction Z1, the first wall 621 being provided around the boss side wall 425, the second wall 622 being provided around the first wall 621, and the accommodation chamber 620V being located between the first wall 621 and the second wall 622 in the radial direction R of the shaped rod 410.

In this embodiment, by providing the first wall 621 and the second wall 622 to form the accommodating chamber 610V for accommodating the sheet-shaped radiator 610, on the one hand, it is easier to fix the sheet-shaped radiator 610, and to facilitate installation, and on the other hand, to avoid scalding of the operator. Without providing the first wall 621 and the second wall 622, it is difficult for the operator to perform the pinching operation or the like of the sheet-like radiator 610 when the temperature of the sheet-like radiator 610 is excessively high, but by providing the first wall 621 and the second wall 622, a certain heat insulating effect can be achieved, and even if the temperature of the sheet-like radiator 610 is further high, the sheet-like radiator 610 can be moved by pinching the first wall 621 and the second wall 622.

For example, support member 620 is optically transmissive such that infrared light is transmitted through support member 620 to heat end sheet 431 and flange 423. In some embodiments, the support member 620 is made of a quartz material.

For example, in order to better accommodate the square sheet-shaped radiator 610, for example, the planar shape of the accommodating chamber 620V is set to be the same as the planar shape of the sheet-shaped radiator 610, and also square.

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

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

For example, the support member 620 includes two connection portions 623, the two connection portions 623 being disposed opposite to each other in the Z1 direction, one connection portion 623 being connected to the top ends of both the first wall 621 and the second wall 622, and the other connection portion 623 being connected to the bottom ends of both the first wall 621 and the second wall 622. In this way, a closed receiving chamber 620V may be formed.

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

In some embodiments, the planar shape of the first wall 621 and the second wall 622 in the X1Y1 plane is 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, to reach a preset 200 degrees celsius.

For example, as shown in fig. 14, packaging sleeve 430 further includes an intermediate sheet 432 connected to end sheet 431, intermediate sheet 432 being located on a side of end sheet 431 remote 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-like radiator 610 from being irradiated onto at least one of the intermediate 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-like radiator 610 are prevented from radiating to the non-heating areas on the packing sleeve and the flow guiding member, thereby avoiding the problems of deformation, poor sealing, and the like of these non-heating areas due to being erroneously heated.

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 forming rod 410, the first side 620a being close to the tubular portion 422, the second side 620b being distant from the tubular portion 422. The blocking member includes: a first blocking member 631 and a second blocking member 632, the first blocking member 631 being positioned at the first side 620a to block the infrared radiation generated by the sheet-like radiator 610 from being irradiated to the tubular portion 422, the second blocking member 632 being positioned at the second side 620b to block the infrared radiation generated by the sheet-like radiator 610 from being irradiated to the intermediate sheet 432.

For example, the first blocking member 631 is provided on the first wall 621 and located between the sheet radiator 610 and the tubular portion 422, so that the infrared rays generated by the sheet radiator 610 can be blocked from being irradiated to the tubular portion 422. In some embodiments, the planar shape of the first stop 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 located above the first wall 621 and is rectangular, and a region below the first blocking member 631 is an infrared ray transmitting region corresponding to the boss side wall 425 so that infrared rays are radiated to the boss side wall 425 through the first wall 621 to heat the boss side wall 425.

For example, a second blocking member 632 is provided on the second wall 622 and between the sheet-like radiator 610 and the intermediate sheet 432, so that the infrared rays generated by the sheet-like radiator 610 are blocked from being irradiated to the intermediate 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 is trapezoidal in shape. Optionally, the blocking member may further include a third blocking member 633, and a region between the second blocking member 632 and the third blocking member 633 is an infrared-transmitting region corresponding to the end sheet 431 such that infrared rays are radiated to the end sheet 431 (including corner regions) through the second wall 622, thereby achieving heating of the end sheet 431.

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

For example, as shown in fig. 19, the sheet-shaped 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 blocking piece 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. The blocking piece 650 is disposed between the first and second terminals 641 and 642 to insulate the first and second terminals 641 and 642 from each other.

The first and second terminals 641 and 642 supply electric power to the sheet radiator 610, and when the sheet radiator 610 is energized, infrared radiation is generated due to heat generated by its resistance. By providing the 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 in size and penetrate into the product for heating, and has better effect on heating areas on corners; 2) A metal plating layer can be added on the supporting part to serve as a blocking piece, and additional structure is not needed to be manufactured; 3) The number of the sheet-shaped radiators can be flexibly increased according to the needs, and more heating is carried out on the bosses which are not easy to heat.

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

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 it may still have the following problems: 1) The excessive current can cause the problems of wire heating, wire skin falling and the like; 2) The power at the two wiring ends of the sheet radiator is unbalanced, and the power at the corner is lower, so that the heating at the corner is insufficient; 3) At high temperatures, cracking of the quartz material may occur, resulting in a shortened service life.

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

For example, as shown in fig. 23, the heat radiation assembly 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 a radial direction R of the forming rod 410, the first side 711 being close to the flange 423, the second side 712 being distant from the flange 423. The heat radiation assembly 700 further includes a first heat radiation source and a second heat radiation source, i.e., a first radiation wire 721 and a second radiation wire 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 the heat generated by the resistance thereof, and the infrared radiation is directly irradiated onto the flange 423, thereby realizing the heating of the flange 423; when the second radiation wire 722 is energized, infrared radiation is generated due to the heat generated by the resistance of the second radiation wire, and the infrared radiation is directly irradiated onto the end sheet 431, thereby heating the end sheet 431. By "direct irradiation" is meant that the infrared does not pass through any tangible component.

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 nichrome, or the like. The heating time of the first and second radiation filaments 721 and 722 is 0.1 to 1 second, for example, 1 second, to reach a preset 200 degrees celsius.

For example, as shown in FIG. 19, flange 423 has a first orthographic projection on the X1Y1 plane and end sheet 431 has a second orthographic projection on the X1Y1 plane, the first orthographic projection falling into the second orthographic projection; the thermal radiation assembly 700 has a third orthographic projection on the X1Y1 plane, the third orthographic projection being located between and surrounding the first orthographic projection and the second orthographic projection. That is, in the radial direction R of shaped rod 410, first radiating wire 721 and second radiating wire 722 are located between packing sleeve 430 and seal assembly 420, and in particular between end sheet 431 and flange 423.

In this embodiment, by disposing the third orthographic projection of the heat radiation assembly 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 are directly radiated to the flange 423, and the infrared rays generated by the second radiation wires 722 are directly radiated to the end sheet 431, so as to achieve simultaneous heating, thereby saving the heating time and fully utilizing 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, both are 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 filament 722 in the X1Y1 plane is the same as the planar shape of the end sheet 431 in the X1Y1 plane, and is, for example, square, so that the infrared ray generated by the second radiation filament 722 can radiate to the four corner positions of the end sheet 431, thereby enhancing the heating effect on the corner positions and further ensuring the tight bonding 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 square, and may be triangular, circular, elliptical, or other shapes, and may be a symmetrical pattern or an asymmetrical pattern. Since the planar shapes of the first and second radiating wires 721, 722 are determined according to the planar shape of the end sheet 310, accordingly, they may be other shapes than square, and the planar shapes of the end sheet 310, the sheet-like radiator 610 are not limited by the embodiments of the present disclosure.

For example, the support member 710 may include a ceramic material that is more resistant to high temperatures than a quartz material, and may prevent the support 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 filaments 721 and 722 having the same shape on the support member 710.

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

For example, the positions of the plurality of first radiation filaments 721 are set to correspond to the boss side walls 425. In some embodiments, the plurality of first radiating filaments 721 and the boss sidewall 425 have overlapping areas when viewed in a radial direction R of the shaped rod, such that infrared rays generated by the plurality of first radiating filaments 721 are directed toward the boss sidewall 425 to enhance heating of the boss sidewall 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 radiant filaments 722 are disposed on second side 712, with plurality of second radiant filaments 722 being located between support member 710 and end sheet 431 and disposed around support member 710 as seen in radial direction R, to heat end sheet 431.

For example, the positions of the plurality of second radiation filaments 722 are set to correspond to the end sheet 431. In some embodiments, the plurality of second radiating filaments 722 and end sheet 431 have overlapping regions, as viewed in radial direction R, such that infrared radiation generated by the plurality of second radiating filaments 722 is directed toward end sheet 431 to enhance heating of end sheet 431.

For example, the plurality of first radiating wires 721 are formed of one radiating wire wound on the first side 711 of the support member 710, and the plurality of second radiating wires 722 are formed of one radiating wire wound on the second side 712 of the support member 710. Compared with the situation that a plurality of circles of radiating wires are formed by a plurality of radiating wires respectively, the radiating wires can be electrified by adopting the radiating wires, and only two wiring terminals are needed, so that the number of the wiring terminals is greatly reduced, the energy loss is reduced, and the electric heating conversion efficiency is improved.

Compared with the above-mentioned scheme of the annular lamp tube and the square sheet radiator, in this embodiment, the positions of the first radiating wire 721 and the second radiating wire 722 can be adjusted according to the position of the area to be heated, so that no blocking component is required, the processing and manufacturing difficulty is reduced, and the material cost is saved.

To further enhance the heating effect on the corner locations 433 of the end sheet, as shown in fig. 23, for example, the plurality of second radiating filaments 722 includes at least two sets of second radiating filaments including a first set of radiating filaments 722A and a second set of radiating filaments 722B. In the axial direction Z1, the first set of radiating wires 722A are farther from the forming bar 410 than the second set of radiating wires 722A, and further, the first set of radiating wires 722A are farther from the end one 410A of the forming bar 410 than the second set of radiating wires 722A. The second radiating wire 722 of the second set of radiating wires 722B is configured to be bent to form a tip 723.

For example, the second radiating filaments 722 of the second set of radiating filaments 722B form tips 723 at locations corresponding to corner locations 433 (see fig. 14) of end sheet 431. In some embodiments, second radiating wire 722 is formed with four tips 723, one for each of four corner locations 433 of end sheet 431. When the second radiating wire 722 of the second group of radiating wires 722B is energized, the infrared rays generated by the tip 723 of the second group of radiating wires can be directly radiated to the corner position 433, so that compared with the case that the tip 723 is not arranged, the heating effect on the corner position 433 is greatly improved, 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 the second side of the support member of fig. 23, i.e., a partially enlarged schematic view of a dashed box 712E in fig. 23. For example, the support member 710 also includes a slot for receiving a radiating 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 wire 721 being embedded in the first slot and the second radiating wire 722 being embedded in the second slot 732.

Since the radiating wires expand when heated, a short circuit is easily generated when the distance between two adjacent radiating wires is too short. By providing the first grooves on the supporting member 710 such that the first radiating wires 721 are embedded into the first grooves, it is possible to prevent a short circuit phenomenon from occurring between adjacent first radiating wires 721; by providing the second grooves 732 in the support member 710 such that the second radiating wires 722 are inserted into the second grooves 732, it is possible to prevent a short circuit phenomenon from occurring between adjacent second radiating wires 722

For example, the number of the first grooves is plural, the number of the second grooves 732 is plural, the plurality of the first grooves are disposed in one-to-one correspondence with the plurality of the first radiating wires 721, and the plurality of the second grooves are disposed in one-to-one correspondence with the plurality of the second radiating wires 722.

Compared with the scheme of an annular lamp tube and a square sheet radiator, the heating scheme adopting the radiating wire has the following advantages: 1) The longer and thinner radiator can raise the resistance, and the voltage is raised to reduce the current 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 pre-buried to control the temperature; 4) The maximum power can be further adjusted by adjusting the thickness density of the radiating filaments.

In this embodiment of the disclosure, the first radiation wire or the second radiation wire may be wound on the surface of the support member, or may be buried in the support member, and the setting manner of the radiation wire on the support member is not limited in this embodiment of the disclosure.

In the disclosed embodiment, after end sheet 431 of packaging sleeve 430 and sealing assembly 420 are heated using heat radiating assembly 450, first end opening 430A needs to be sealed.

For example, as shown in fig. 12, the apparatus 1000 further comprises a sealing device 460. After the heat radiation assembly 450 heats the end sheet 431 and the sealing assembly 420 of the packing sleeve 430, 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 assembly 420 to each other, so as to seal the first end opening 430A, and form a package with one end sealed.

Next, when the forming lever 410 is rotated to the lower right position shown in fig. 12, the package with one end sealed is transferred to a subsequent station, such as filling through the end opening 430B, sealing the end opening 430B, and so forth.

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 an end sheet surrounding the periphery of the sealing assembly, and a gap is reserved between the end sheet and the sealing assembly;

s200: disposing a heat radiating assembly in the gap and thermally radiating the end sheet and the seal assembly with the heat radiating assembly; and

s300: the end sheet and the seal assembly are bonded to one another.

In the manufacturing method of the packaging container provided by the above embodiment, since the heat radiation assembly is provided in the gap between the end sheet and the seal assembly, and the end sheet and the seal assembly are heated by the heat radiation, there are the following advantages:

For example, the above-described manufacturing method may be implemented using the apparatus 1000 for manufacturing a packaging container mentioned in the previous embodiment. Reference is made to the description of the previous embodiments for specific construction and process of the apparatus 1000, and details are not repeated here.

For example, the heat radiation assembly of the above-described manufacturing method may employ the heat radiation assembly 500, 600 or 700 of the previous embodiment. For the specific construction and operation of the heat radiation assembly 500, 600 or 700, reference is made to the description of the previous embodiments, and the detailed description thereof will be omitted.

Referring to fig. 12 to 25, for example, the above step S100 includes: wrapping sleeve 430 is positioned over forming bar 410 with sealing assembly 420 positioned at end one 410A of forming bar 410, wrapping sleeve 430 having end sheet 431 surrounding the circumference of sealing assembly 420, end sheet 431 and sealing assembly 420 leaving a gap 440G therebetween;

Referring to fig. 12 to 25, for example, the above step S200 includes: the heat radiation assembly 500, 600, or 700 is disposed in the gap 440G, and the end sheet 431 and the sealing assembly 420 are heated in a heat radiation manner using the heat radiation assembly 500, 600, or 700.

Referring to fig. 12 to 25, for example, the above step S300 includes: end sheet 431 and seal assembly 420 are bonded to one another.

For example, as shown in fig. 14, the sealing assembly 420 includes a flow directing member 421, the flow directing member 421 including a tubular portion 422 and a flange 423 connected to the tubular portion 422. The manufacturing method comprises the following steps: heating end sheet 431 and flange 423 with heat radiation by heat radiation assembly 500, 600, or 700; and joining end sheet 431 and flange 423 to each other. By heating end sheet 431 and flange 423 with heat radiating assemblies 500, 600, or 700, the heated area may be concentrated, facilitating melting of end sheet 431 and flange 423, making the two more tightly and securely bonded.

For example, as shown in fig. 14 and 16, flange 423 includes boss 424 and boss sidewall 425 connected to boss 424, and forming stem 410 defines an axial direction Z1 and a radial direction R perpendicular to axial direction Z1. The manufacturing method comprises the following steps: heat radiating assembly 500, 600, or 700 is disposed in gap 440G such that heat radiating assembly 500, 600, or 700 is located between end sheet 431 and boss sidewall 425 in radial direction R.

By disposing heat radiating assembly 500, 600, or 700 between end sheet 431 and boss side wall 425, infrared rays generated by heat radiating assembly 500, 600, or 700 can be simultaneously radiated to boss side wall and end sheet 431 to achieve simultaneous heating, which is advantageous for melting end sheet 431 and boss side wall 425, not only saving heating time, but also fully utilizing 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, the end sheet 431 and the sealing assembly 420 are heated in a heat radiating manner using the heat radiating assembly 500, 600 or 700, including: infrared light is generated by tube 510 to heat end sheet 431 and flange 423.

By providing lamp 510, infrared rays can be simultaneously and directly irradiated to end sheet 431 and flange 423, which is advantageous in improving heating efficiency and shortening heating time. The technical effects related to the heating mode of the annular lamp tube can be seen from the technical effects in the previous embodiments, and will not be repeated here.

For example, referring to fig. 18 to 22B, the heat radiation assembly 600 includes: a sheet-shaped radiator 610 and a supporting member 620 having a receiving cavity 620V, the sheet-shaped radiator 610 being positioned in the receiving cavity 620V; in step 200 above, heat-radiating end sheet 431 and sealing assembly 420 are thermally heated using heat-radiating assembly 500, 600 or 700, comprising: the infrared rays generated by the sheet-like radiator 610 are irradiated to the end sheet 431 and the flange 423 through the supporting member 620.

The sheet-like radiator 610 has flexibility as compared with the heating method of the ring-shaped lamp tube, and can improve the heating effect on the corner position of the end sheet 431. The technical effects related to the heating manner of the sheet radiator can be seen from the technical effects in the previous embodiments, and will not be described herein.

For example, referring to fig. 23 to 25, the heat radiation assembly 700 includes: a support member 710 and first and second radiating filaments 721, 722 on opposite sides (i.e., first and second sides 711, 712) of the support member 710; in the above step S200, the end sheet 431 and the sealing assembly 420 are heated in a heat radiating manner using the heat radiating assembly 500, 600 or 700, including: the flange 423 is heated with the first radiation wire 721 and the end sheet 431 is heated with the second radiation wire 722.

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

Compared with the heating mode of the annular lamp tube and the sheet radiator, the heating mode of the radiating 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 related to the heating manner of the radiation wire can be seen from the technical effects in the previous embodiments, and will not be described herein.

In the embodiment of the disclosure, the infrared absorption capability of different objects is different, and even the same object has different infrared absorption capability of different wavelengths. Therefore, the infrared heating is applied, and an appropriate infrared radiation source is selected according to the type of the heated object, so that the radiation energy is concentrated in the absorption wavelength range of the heated object, thereby obtaining good heating effect.

For example, a packaging sheet of polyethylene material has the highest absorption efficiency for infrared rays having a wavelength in the mid-infrared region, and therefore, infrared rays in the mid-infrared region are preferable 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, comprising:

a forming device comprising a forming bar, a seal assembly and a packaging sleeve, wherein the seal assembly is located at the end of the forming bar; 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 assembly and is configured to be combined with the sealing assembly; a gap is left between the end sheet and the seal assembly;

A heat radiating assembly, wherein the heat radiating assembly is disposed in the gap and configured to heat the end sheet and the seal assembly in a heat radiating manner.

(2) In the apparatus of 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 forming bar defines an axial direction, the flange having a first orthographic projection on a plane perpendicular to the axial direction, the end sheet having a second orthographic projection on a plane perpendicular to the axial direction, the first orthographic projection falling into 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 and surrounding the first orthographic projection and the second orthographic projection.

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

(4) In the apparatus of example (3),

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

wherein the lamp tube is located between the end sheet and the boss side wall in a radial direction of the forming bar, the radial direction being perpendicular to the axial direction.

(5) In the apparatus of example (4),

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

(6) In the apparatus of example (3),

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 lamp tube from being irradiated onto at least one of the intermediate sheet and the tubular portion of the flow guiding member.

(7) In the apparatus of example (6),

wherein the lamp 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 intermediate sheet and the second side is distant from the intermediate 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 by the lamp tube from being irradiated to the intermediate sheet.

(8) In the apparatus of example (7),

wherein the lamp tube comprises a third side and a fourth side opposite to each other in a radial direction of the forming bar, wherein the third side is close to the tubular portion and the fourth side is distant from the tubular portion;

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

(9) In the apparatus of example (8),

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

(10) In the apparatus of 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 of example (2),

wherein the heat radiation assembly comprises: a heat radiation source and a support member supporting the heat 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 of example (11),

wherein the support member includes: a first wall and a second wall extending in the axial direction, the first wall being disposed so as to surround the boss side wall, the second wall being disposed so as to surround the first wall, the accommodation chamber 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 of 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 of example (13),

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

(15) In the apparatus of example (11),

wherein the heat radiation assembly further includes 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 guiding member.

(16) In the apparatus of example (15),

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

wherein the blocking member includes: a first blocking member located at the first side to block infrared rays generated by the heat radiation source from being irradiated to the tubular portion, and a second blocking member located at the second side to block infrared rays generated by the heat radiation source from being irradiated to the intermediate sheet.

(17) In the apparatus of example (11),

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

(18) In the apparatus of example (17),

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

wherein the heat radiation assembly further comprises: first wiring end, second wiring end and separation blade:

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

the second terminal is connected to the second end and is configured to provide a negative voltage to the sheet radiator;

the blocking piece is arranged between the first terminal and the second terminal so as to insulate the first terminal and the second terminal from each other.

(19) In the apparatus of example (17), wherein the number of the sheet-like radiators is plural, a plurality of the sheet-like radiators are stacked in a radial direction of the forming rod.

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

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

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

a support member including a first side and a second side opposite to each other in a radial direction of the forming bar, the first side being close to the flange, the second side being distant from the flange;

a first heat radiation source provided on the first side to heat the flange, and a second heat radiation source provided on the second side to heat the end sheet.

(23) In the apparatus of example (22),

the first heat radiation source is a first radiation wire which is arranged around the boss side wall to heat the boss side wall;

the second radiation source is a second radiation filament, which is located between the support member and the end sheet in the radial direction and is provided around the support member to heat the end sheet.

(24) In the apparatus of example (23),

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

(25) In the apparatus of example (23),

the second radiating wires are multiple in number, the multiple second radiating wires comprise at least two groups of second radiating wires, and the at least two groups of second radiating wires comprise a first group of radiating wires and a second group of radiating wires; in the axial direction, the first set of radiating filaments is farther from the forming beam than the second set of radiating filaments;

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

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

(27) In the apparatus of example (22),

wherein the support member further comprises:

a first slot located on the first side of the support member; and for receiving the first heat radiation source;

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

Wherein the first heat radiation source is embedded in the first slot and the second heat radiation source is embedded in the second slot.

(28) The apparatus of example (27), wherein,

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

the number of the first grooves is a plurality of the second grooves;

the first grooves are arranged in one-to-one correspondence with the first heat radiation sources, and the second grooves are arranged in one-to-one correspondence with the 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 assembly 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 assembly, and a gap is reserved between the end sheet and the sealing assembly;

disposing a heat radiating assembly in the gap and thermally radiating the end sheet and the seal assembly with the heat radiating assembly; and

The end sheet and the seal assembly are bonded to one another.

(31) In the manufacturing method of example (30),

wherein the manufacturing method comprises the following steps:

heating the end sheet and the flange by heat radiation with the heat radiation assembly; and

the end sheet and the flange are bonded to each other.

(32) In the manufacturing method of example (31),

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

wherein the manufacturing method comprises the following steps:

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

(33) In the manufacturing method of example (31),

wherein, the heat radiation component comprises a lamp tube;

wherein heating the end sheet and the seal assembly with the heat radiation assembly in a heat radiation manner comprises: infrared light is generated using the lamp tube to heat the end sheet and the flange.

(34) In the manufacturing method of example (31),

wherein the heat radiation assembly comprises: a sheet-like radiator and a support member having a receiving cavity in which the sheet-like radiator is located;

wherein heating the end sheet and the seal assembly with the heat radiation assembly in a heat radiation manner comprises:

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

(35) In the manufacturing method of example (31),

wherein the heat radiation assembly comprises: a support member and first and second radiating wires located at opposite sides of the support member;

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 present disclosure relate only to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design.

(2) The embodiments of the present disclosure and features in the embodiments may be combined with each other to arrive at a new embodiment without conflict.

The foregoing is merely exemplary embodiments of the present disclosure and is not intended to limit the scope of the disclosure, which is defined by the appended claims.

Claims

1. A method of manufacturing a packaging container, comprising:

the end sheet and the seal assembly are bonded to one another.

2. The manufacturing method according to claim 1,

wherein the manufacturing method comprises the following steps:

the end sheet and the flange are bonded to each other.

3. The manufacturing method according to claim 2,

wherein the manufacturing method comprises the following steps:

4. The manufacturing method according to claim 2,

wherein, the heat radiation component comprises a lamp tube;

5. The manufacturing method according to claim 2,

6. The manufacturing method according to claim 2,

7. An apparatus for manufacturing packaging containers, comprising:

8. The apparatus according to claim 7,

9. The apparatus of claim 8, wherein the heat radiation assembly comprises a heat radiation source that is a lamp configured to generate infrared light to heat the end sheet and the flange.

10. The apparatus according to claim 9,

11. The apparatus according to claim 10,

12. The apparatus according to claim 9,

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 of the packaging sleeve;

13. The apparatus according to claim 12,

14. The apparatus according to claim 13,

15. The apparatus according to claim 14,

16. The apparatus according to claim 12,

17. The apparatus according to claim 8,

18. The apparatus according to claim 17,

19. The apparatus according to claim 18,

20. The apparatus according to claim 19,

21. The apparatus according to claim 17,

22. The apparatus according to claim 21,

23. The apparatus according to claim 17,

24. The apparatus according to claim 23,

25. The apparatus according to claim 23, wherein the number of the sheet-like radiators is plural, and a plurality of the sheet-like radiators are stacked in a radial direction of the forming rod.

26. The apparatus of claim 23, wherein the sheet radiator comprises a metal or alloy material.

27. The apparatus of claim 17, wherein the heat radiation source is configured to radiate infrared light, the support member being optically transparent such that the infrared light is transmitted through the support member to heat the end sheet and the flange, respectively.

28. The apparatus of claim 8, wherein the heat radiating assembly comprises:

29. The apparatus of claim 28,

the second heat 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.

30. An apparatus according to claim 29,

31. An apparatus according to claim 29,

32. The apparatus of claim 31, wherein the packaging sleeve includes four corners, the tips being four, the four tips being disposed in one-to-one correspondence with the four corners.

33. The apparatus of claim 28, wherein the support member further comprises:

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

34. An apparatus according to claim 33,

the number of the first grooves is a plurality of the second grooves;

35. The apparatus of claim 28, wherein the support member comprises a ceramic material.