JP2017114562A - Tray product, and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress an accident that a lid film is torn off when a user performs an opening operation, which is caused by fine notches made by making a tray product by cutting a sealed molding tray sheet.SOLUTION: A tray food product (tray product) 10 has a first heat deposition region 30 continuously extended over the whole periphery of a roux storage recess 4. The first heat deposition region 30 is formed of a narrow region 50 and a wide region 52. The narrow region 50 is extended along first and second side edges 40a(1) and 40a(2) sandwiching an opening corner part 24a. The wide region 52 is extended along third and fourth side edges 40a(3) and 40a(4). A non-contact region 54 is positioned between the narrow region 50, and the first and second side edges 40a(1) and 40a(2). The wide region 52 is brought into contact with the third and fourth side edges 40a(3) and 40a(4).SELECTED DRAWING: Figure 9

Description

  The present invention relates to a tray product sealed with a lid film and a method for producing the same.

  Rou such as curry and stew is provided to users in a sealed state using a synthetic resin tray. U.S. Patent No. 6,057,051 discloses a system and method for producing sealed tray food.

  If the content of an indication is indicated concretely in patent documents 1, a synthetic resin fabrication tray sheet provided with a plurality of luo accommodation recesses will be prepared. In Patent Document 1, a molded tray sheet is called a “tray unit”. The cooked roux is filled in each luo receiving recess of the molded tray sheet, and then a resin lid film is heat welded (heat sealed) to the molded tray sheet to seal the roux containing tray sheet. The sealed molded tray sheet is then punched to make a tray food. The sealed tray food is composed of two single tray foods. Each single tray food contains solid roux as one content (FIG. 9 of Patent Document 1).

  Here, the single tray food product has a flange surrounding the luo housing recess for housing the contents, and the lid film is in a state of being thermally welded to the flange. And the heat welding area | region has reached to the outer periphery of the flange.

  Patent Document 1 discloses an extraction blade type device in FIG. The extraction blade type device is composed of a blade die positioned below and a push die positioned above and below it. The formed tray sheet sealed with the lid film is punched out by a punching blade type device to form a plurality of tray foods. Details of the tray food are disclosed in Patent Document 2.

  Patent Document 3 discloses details of a punching device corresponding to the punching blade type device.

  Returning to Patent Document 1, Patent Document 1 describes the existence of punching residue discharge means for discharging punching residues that are produced when a sealed molded tray sheet is punched.

JP 2013-6625 A JP 2011-246141 A JP-A-1-254515

  In order to meet recent demands for saving resources, reducing waste, and reducing environmental impact, containers and packaging materials are becoming thinner and simpler. In connection with this, the problem which was not seen conventionally is newly generated. One of them is the breakage of the lid film that occurs when the single tray food is opened. In other words, it hardly occurred in the conventional lid film, but by adopting a thin lid film, the problem that the lid film tears from an unexpected place during the opening of the lid film becomes obvious. I came.

  The inventors of the present application have come up with the present invention in the process of searching for the cause of this problem. That is, a punching blade type device (Patent Literature 1) or a punching device (Patent Literature 3) is employed to make a tray food, but this is adopted in the punching blade type device (Patent Literature 1) or the punching device. The punching blade has an intentionally blunt cutting edge. That is, when a sharp cutting edge is adopted as the cutting edge, the cutting edge sharpness changes in time series in the process of operating the apparatus. In order to avoid this, a blunt cutting edge is used as the cutting edge.

  Assuming that this blunt cutting edge is related to the above-mentioned cracking problem of the lid film, the process of making a tray food by cutting the sealed molded tray sheet with a punching die or punching device Observed. As a result, it was found that the tray food was cut off from the sealed molded tray sheet. The inventors of the present invention have found that a fine notch is generated on the cut end face of the tray food due to this influence.

  The inventors of the present application have come to consider that a fine notch is a starting point for tearing of the lid film. That is, when the user is performing an operation of opening the lid film, if the opening operation force is applied to the notch, the mechanism of the present invention is that the lid film starts to tear from an unexpected location starting from the notch. They came up with the idea.

  The tray food packaging form described above is not limited to roux but is also applied to tofu and natto. Moreover, it is applied not only to food but also to industrial products such as batteries and toothbrushes.

  An object of the present invention is to suppress an accident that a lid film is torn during an opening operation performed by a user on the premise that a sealed molded tray sheet is cut with a conventionally known extraction blade type device or punching device. An object of the present invention is to provide a tray product that can be used and a method for manufacturing the same.

The above technical problem is, according to one aspect of the present invention,
A molded sheet formed with a content-accommodating recess for accommodating the content;
A lid film constituting the lid member of the molded sheet;
The lid film and the molded sheet are tray products sealed by being thermally welded over the entire circumference of the content accommodating recess,
The thermally welded heat-bonded region is composed of a narrow region and a wide region,
The wide region is in contact with the outer periphery of the tray product;
The narrow region has a narrower thermal welding width than the wide region,
The narrow region is separated from the outer peripheral edge of the tray product, and a non-adhesive region where the molded sheet and the lid film are not bonded is located between the outer peripheral edge of the tray product and the narrow region. And
A tray product in which an opening portion for starting an opening operation for separating the lid film and the molded sheet and taking out the contents is positioned corresponding to a middle portion in the longitudinal direction of the narrow region. Achieved by providing.

The above technical problem is, according to another aspect of the invention,
A rectangular shaped tray sheet having a plurality of content-accommodating recesses for accommodating the contents and having a flange around the content-accommodating recesses;
Preparing a lid film constituting the lid member of the molded tray sheet;
By punching out the lid film after heat welding the flange of the molded tray sheet, a rectangular tray product containing the contents is made,
In the tray product product manufacturing method for discharging the punching residue by winding the punching residue remaining after punching the tray product from one longitudinal end of the punching residue,
The region where the lid film is heat-welded to the flange has a first heat-welding region belonging to the tray product and a second heat-welding region belonging to the punching residue,
The first heat welding region has a narrow region separated from the first and second side edges sandwiching the opening corner of the tray product, and the third and fourth opposing the first and second side edges. And a wide region in contact with the side edge of the narrow region, the narrow region has a smaller width of thermal welding than the wide region,
The second heat welding region is
First and second longitudinal weld zones located at first and second widthwise end portions located at both widthwise ends of the punching residue and extending substantially continuously in the longitudinal direction;
A longitudinal intermediate weld zone located in the middle in the width direction located in the middle of the punching residue in the width direction and extending intermittently in the longitudinal direction;
This is achieved by providing a method for manufacturing a tray product, characterized in that it has a split welding zone located in a portion extending in the width direction of the punching residue and intermittently extending in the width direction.

  The effects and other objects of the present invention will become apparent from the detailed description of the embodiments of the present invention later.

It is a perspective view of the shaping | molding tray sheet which can apply this invention. It is a figure for demonstrating the process of filling a molding tray sheet | seat of FIG. It is a fragmentary top view for demonstrating a heat welding area | region when a shaping | molding tray sheet is sealed with a cover film. It is a perspective view for demonstrating the process which punches out the shaping | molding tray sheet sealed with the cover film, and produces a tray foodstuff. It is the elements on larger scale of FIG. It is a perspective view of tray food. It is a figure for demonstrating operation which subdivides the content before opening the single tray food cut out from tray food. It is a figure for demonstrating operation which opens a single tray foodstuff. It is a top view of the tray food comprised from two single-piece tray food. It is a fragmentary top view for demonstrating the punching residue generate | occur | produced in the process of punching out the shaping | molding tray sheet sealed with the cover film, and producing a tray foodstuff.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows a rectangular shaped tray sheet 100 to which the present invention can be applied. The plurality of luo accommodating recesses 4 of the molded tray sheet 100 are filled with the liquid rail 2 (FIG. 2). In the example shown in the figure, the molded tray sheet 100 has “12” roux accommodating recesses 4 arranged at a predetermined interval (FIG. 1), and each luo accommodating recess 4 is filled with roux 2 and solidified ( Figure 2).

  The molded tray sheet 100 has a flange 6 at its upper end, and the flange 6 extends in the lateral direction. When the molding tray sheet 100 is filled with the luo 2, the molding tray sheet 100 is covered with the synthetic resin lid film 8 (FIG. 2). Each of the lug accommodating recesses 4 is sealed by thermally welding the lid film 8 to the flange 6.

  The sealed molded tray sheet 100 is formed with a tray food 10 and a weakening line 12 to be described later (FIGS. 4 and 5) by the extraction blade type device disclosed in Patent Document 1. The punching residue 14 generated by punching the tray food 10 from the molded tray sheet 100 is removed by a winding device (not shown).

  FIG. 6 is a perspective view of the tray food 10. In the illustrated example, the tray food 10 is composed of two single tray foods 20. Each single tray food 20 has a roux 2 (FIG. 2) accommodated in one luo accommodating recess 4. The single tray food 20 has a rectangular shape when viewed in plan (FIG. 9).

  The tray food 10 has a weakening line 12 between two single tray foods 20. The user can cut the two single tray foods 20 along the weakening line 12 and open them individually to use the solid roux 2 which is a single content.

  Returning to FIG. 1, the roux housing recess 4 has a cross-shaped hook 5 at the bottom thereof. When the roux 2 filled in the roux accommodating recess 4 is solidified, a cross-shaped recess is formed on the bottom surface of the roux 2 by the cross-shaped hook 5. This makes it easy to subdivide the solid roux into two or four.

  FIG. 7 is a diagram for explaining a subdivision operation generally performed by the user before opening the single tray food 20. When the user folds the single tray food 20 in a sealed state, the solid roux sealed therein can be subdivided. The single tray food 20 having a rectangular shape in plan view has a predetermined opening corner 24a, and the lid film 8 is not bonded to the opening corner 24a. The user can open the single tray food 20 by picking and pulling up the corner of the lid film 8 of the opening corner 24a (FIG. 8).

  Since the above is the same as that of the prior art, detailed description thereof will be omitted, and items related to the present invention will be described below.

  FIG. 3 is a plan view of the molded tray sheet 100 with the lid film 8 heat-welded. In FIG. 3, the 1st heat welding area | region 30 shown with a dot shows the welding part of the tray foodstuff 10. As shown in FIG. A second heat welding region 32 indicated by a cross indicates a welded part that is detached from the tray food 10. That is, the second heat welding region 32 is located in the punching residue 14.

  Referring to FIG. 9, the flange 6 included in the tray food 10 includes a first flange 40 a positioned around the first roux containing recess 4 a of the first single tray food 20 a and a second flange of the second single tray food 20 b. And a second flange 40b located around the 2 luu accommodating recess 4b. The first and second flanges 40a and 40b have a rectangular shape in plan view, and the four corner portions 24 have an arc shape. Reference numeral 24a is the opening angle portion described above. The opening corner 24a is positioned lower than the common plane occupied by the first and second flanges 40a and 40b. That is, as can be seen best from FIG. 1, the opening angle portion 24a is constituted by a lower step portion than the first and second flanges 40a and 40b (flange 6).

  Still referring to FIG. 9, the tray food 10 has the aforementioned weakening line 12 between the first and second flanges 40a, 40b. The aforementioned opening corner 24a is located on the opposite side to the weakening line 12 with the first luo housing recess 4a and the second luo housing recess 4b interposed therebetween.

  The first thermal welding region 30 is composed of two partial regions 30a and 30b when described in relation to the outer peripheral edges of the first and second flanges 40a and 40b. Since the first flange 40a and the second flange 40b are in common, the four side edges of the first flange 40a are the two second edges forming the opening angle portion 24a. 1. The second side edges 40a (1), 40a (2) and the two remaining third and fourth sides that oppose the first and second side edges 40a (1), 40a (2). It consists of edges 40a (3) and 40a (4).

  The 1st heat welding area | region 30 is continuously extended over the perimeter of the 1st lure accommodation recessed part 4a. The first heat welding region 30 includes a narrow region 50 and a wide region 52. The terms “narrow” and “wide” are used in a relative sense. The narrow region 50 extends along the first and second side edges 40a (1) and 40a (2) sandwiching the opening corner 24a. The wide region 52 extends along the third and fourth side edges 40a (3) and 40a (4).

  The narrow region 50 is located away from the first and second side edges 40a (1) and 40a (2) sandwiching the opening corner 24a. That is, the non-bonding region 54 is located between the narrow region 50 and the first and second side edges 40a (1) and 40a (2). The wide region 52 is in contact with the third and fourth side edges 40a (3) and 40a (4). In the non-bonded region 54, the lid film 8 is not thermally welded to the first and second flanges 40a and 40b.

  When the sealed molded tray sheet 100 is cut using, for example, a punching blade device that is substantially the same as that of Patent Document 1, portions corresponding to the first and second side edges 40a (1) and 40a (2) Even if a fine notch is generated at the edge of the lid film 8, the first and second side edges 40a (1) and 40a (2) are not thermally welded. It is possible to prevent the film 8 from tearing. That is, referring to FIG. 8, when the user performs an opening operation, stress is applied to the lid film and the flange on the boundary line between the lid film 8 and the narrow region 50 that are being peeled off. Is not stressed. Thereby, it is possible to prevent the lid film from tearing due to the fine notch. In fact, it was confirmed that no unexpected tearing of the lid film 8 occurred with the opening operation.

  The narrow thermal welding region 50 has a thermal welding width narrower than that of the prior art. By narrowing the width of the thermal welding, the sealing performance of the narrow region 50 is lowered. When the sealing performance of the narrow region 50 is reduced, the operation of the single tray food 20 described with reference to FIG. The internal pressure increases, and the lid film 8 and the tray part are peeled off. In order not to cause such a problem due to a decrease in sealing performance, it is preferable to increase the sealing strength of the regions (the first heat welding region 30 and the second heat welding region 32) that are thermally welded to the flange as compared with the conventional case. Specifically, the seal strength is conventionally set to 7 to 9 N / 15 mm, but in the embodiment, it is set to 10 to 11 N / 15 mm. By increasing the sealing strength in this way, it is possible to ensure the same sealing performance as before. Here, the conventional means that the heat-welded area of the tray food 10 is composed of the wide heat-welded area 52.

  The “seal strength” means a measured value of the maximum force applied when the sealing part of the packaging material cut at a width of 15 mm in the direction perpendicular to the sealing part is pulled from both sides in the peeling direction. This measurement method relies on JIS Z 0238 “Bag Heat Seal Strength Test”.

  On the other hand, the wide heat welding region 52 is relatively wide, and the wide region 52 extends to the third and fourth side edges 40a (3) and 40a (4). That is, the lid film 8 is thermally welded to the third and fourth side edges 40a (3) and 40a (4).

  In the narrow region 50, it is preferable to have a mouth 56 at the opening angle portion 24a. The shed 56 has a peak protruding outward. Thereby, when opening, the operation force required for the initial movement of peeling of the lid film 8 can be reduced, and the peeling operation of the lid film 8 can be facilitated.

  As described above, when the sealing strength of the narrow region 50 is set higher than the conventional one, it is preferable to provide the mouth 56. With respect to the problem of difficulty in opening the narrow region 50 having a stronger sealing strength than conventional ones, the ease of peeling at the initial stage of opening can be ensured by the opening 56.

  With reference to FIG. 3, the 2nd heat welding area | region 32 is demonstrated. As described above, the second heat welding region 32 exists at a position away from the tray food 10, that is, at the punching residue 14. It has a longitudinal region 60 extending along the longitudinal direction of the lid film 8, that is, the left-right direction in FIG. 3, and a transverse region 62 extending in the width direction of the lid film 8, that is, the vertical direction in FIG. 3.

  The longitudinal region 60 is located between the tray foods 10 and is in a state of being substantially in contact with two longitudinal intermediate welding bands 64 continuously extending in the longitudinal direction of the tray foods 10 and the widthwise end of the molded tray sheet 100. A first longitudinal welding band 66 extending continuously in the longitudinal direction of the tray food 10 and a width direction end on the opposite side of the first longitudinal welding band 66 and in contact with the tray food 10 It has the 2nd longitudinal direction welding zone 68 extended continuously in the longitudinal direction of the tray foodstuff 10. As shown in FIG. Here, the second longitudinal welding band 68 and the longitudinal intermediate welding band 64 have the same form, but these bands 68 and 64 may have different shapes.

  The crossing region 62 has a plurality of divided welding bands 70 extending along each tray food 10, and the plurality of divided welding bands 70 are respectively positioned between adjacent tray foods 10 in the longitudinal direction of the formed tray sheet 100. The divided weld zones 70 are separated from each other. That is, the plurality of divided welding bands 70 are arranged in a line in the width direction of the forming tray sheet 100 and are intermittently positioned.

  The aforementioned longitudinal region 60 also has a connecting bridge 72. The connection bridge 72 is located at the end in the width direction opposite to the first longitudinal welding band 66 and the second longitudinal welding band 68 adjacent to and adjacent to the first welding bridge 72 a located at the longitudinal end of the lid film 8. And a second welding bridge 72b located between the two. The first welding bridge 72a is located between the second longitudinal welding band 68 positioned at the longitudinal end of the lid film 8 and the divided welding band 70 adjacent thereto, and connects these. The second weld bridge 72b substantially connects the adjacent second longitudinal weld zones 68.

  3 and 5, reference symbol S indicates a slit. The first and second longitudinal welding bands 66 and 68 are formed with the food tray 10 as a unit. This is because a mold for heat-welding the lid film 8 and the molded tray sheet 100 is produced in units of the food tray 10, and the slit S is located in a gap between adjacent molds. Therefore, the width of the slit S is slight. Therefore, the separation distance between the first longitudinal welding bands 66 adjacent to each other across the slit S on the punching residue 14 is small, and the adjacent first longitudinal welding bands 66 are substantially formed of the punching residue 14. It can be said that it is continuous in the longitudinal direction. Further, the width of the slit S of the second welding bridge 72b is also slight, and therefore the second longitudinal welding band 68 is also continuous in the longitudinal direction of the punching residue 14 by the second welding bridge 72b. be able to.

  The second heat welding region 32 further has a substantially triangular welding portion 74 that fills corners of the two single tray foods 20 of each tray food 10.

  5 and 10 are diagrams for explaining the relationship between the punching residue 14 and the tray food 10. The punching residue 14 is constituted by a part of the lid film 8 (FIG. 3) and a part of the molded tray sheet 100 (FIG. 1), and these are thermally welded by the second heat welding region 32 described above. .

  5 and 10, in the second heat welding region 32 (FIG. 3), the second longitudinal welding band 68 and the first longitudinal welding band 66 are provided at both ends in the width direction of the punching residue 14. In the 1st, 2nd width direction edge part 80 and 82 which is located, it has extended continuously along each width direction edge part 80 and 82. As shown in FIG. The second longitudinal welding band 68 is divided by the first welding bridge 72a so that the end of the second longitudinal welding band 68 is located at the tip of the lid film 8 and at the end of the lid film 8. 70 (FIG. 3).

  Further, in the second heat welding region 32, the divided welding zone 70 is intermittently positioned at the longitudinal start end portion 86 and the longitudinal intermediate portion 88 extending in the width direction of the punching residue 14. Further, the second heat welding region 32 has a longitudinal intermediate welding band 64 continuously extending to a portion corresponding to the tray food 10 in the intermediate portion 84 in the width direction.

  Thus, the punching residue 14 is heat-welded in the longitudinal direction at both ends in the width direction, and the start end and the intermediate portion are intermittently heat-welded. Thereby, the tensile strength is increased, and even if the punching residue 14 is discharged while being pulled in the direction indicated by the arrow A in FIG. 10, it is possible to prevent the punching residue 14 from being broken. The punching residue 14 is taken up by a roller not shown. Therefore, it is possible to prevent the winding by the roller from being disabled by the fracture of the punching residue 14.

  As mentioned above, although the tray food which accommodated the solid roux which is a typical example which can apply this invention was demonstrated, this invention is not limited to this. The contents may be foods such as tofu, tokoroten, pudding, jelly, mousse, konjac, marine products such as mozuku vinegar, livestock products such as ham, rice, pickles, sweets, miso, natto, noodles, etc. .

  For example, tofu and pudding are stored in a circular tray in plan view. Regarding the application of the present invention, of the heat-welded region surrounding the entire content-accommodating recess, the half-circumferential region including the unsealed portion is constituted by the narrow heat-welded region 50 described above, and the remaining half-circular region is described above. It is good to comprise in the wide heat welding area | region 52. FIG. In this case, it is preferable to design the intermediate portion in the longitudinal direction of the narrow heat welding region 50 at the opening portion of the tray food.

  Further, the tray food is only one application example of the present invention. The contents may be products such as pharmaceuticals, daily necessities, and industrial products.

  For example, as a packaging often seen in a toothbrush or a dry battery, a tray product composed of a combination of a transparent molded sheet formed with a content accommodation recess for accommodating a toothbrush and the like and a lid film constituting the lid member is there. The present invention can also be applied to such tray products.

100 Molded tray sheet 2 Rou 4 Rou housing recess (contents housing recess)
6 Flange 8 Lid film 10 Tray food (tray product)
12 Weakened wire 14 Punching residue 20 Single tray food 24 Corner 24a Opening corner 30 First heat welding area (tray)
32 2nd heat welding area (Punching residue)
40a Flange of single tray food 40a (1) First side edge of single tray food 40a (2) Second side edge of single tray food 40a (3) Third side edge of single tray food 40a (4) Single tray food 4th side edge 50 Narrow thermal welding area 52 Wide thermal welding area 54 Non-adhesion area 56 Higuchi 60 Longitudinal area (2nd thermal welding area)
62 Crossing area (second heat welding area)
64 Longitudinal intermediate weld zone (longitudinal region 60)
66 First longitudinal weld zone (longitudinal region 60)
68 Second longitudinal weld zone (longitudinal region 60)
70 Split weld zone (crossing region 62)
72 Connecting bridge (longitudinal region 60)
72a 1st welding bridge 72b 2nd welding bridge 74 welding part of substantially triangle 80 1st width direction end part 82 2nd width direction end part 84 width direction intermediate part 86 longitudinal direction start end part 88 longitudinal direction intermediate part

Claims (5)

A molded sheet formed with a content-accommodating recess for accommodating the content;
A lid film constituting the lid member of the molded sheet;
The lid film and the molded sheet are tray products sealed by being thermally welded over the entire circumference of the content accommodating recess,
The thermally welded heat-bonded region is composed of a narrow region and a wide region,
The wide region is in contact with the outer periphery of the tray product;
The narrow region has a narrower thermal welding width than the wide region,
The narrow region is separated from the outer peripheral edge of the tray product, and a non-adhesive region where the molded sheet and the lid film are not bonded is located between the outer peripheral edge of the tray product and the narrow region. And
A tray product, wherein an opening portion for starting an opening operation for separating the lid film and the molded sheet and taking out the contents is positioned corresponding to a middle portion in the longitudinal direction of the narrow region. A content-accommodating recess containing the content,
A flange extending continuously around the entire circumference of the content receiving recess;
A lid film thermally welded over the entire circumference of the flange,
In the tray product having an opening part that picks up the lid film when opening the lid film,
The heat welding region of the lid film is composed of a narrow region and a wide region,
The wide region is in contact with the outer periphery of the tray product;
The narrow region has a narrower thermal welding width than the wide region,
The narrow area is separated from the outer peripheral edge of the tray product, and a non-adhesive area where the flange and the lid film are not bonded is located between the outer peripheral edge of the tray product and the narrow area. ,
A tray product, wherein an opening portion for starting an opening operation for separating the lid film and the flange and taking out the contents is positioned corresponding to an intermediate portion in the longitudinal direction of the narrow region.   3. The tray product according to claim 1, wherein the tray product has a mouth opening in the narrow region corresponding to the opening portion. A rectangular shaped tray sheet having a plurality of content-accommodating recesses for accommodating the contents and having a flange around the content-accommodating recesses;
Preparing a lid film constituting the lid member of the molded tray sheet;
By punching out the lid film after heat welding the flange of the molded tray sheet, a rectangular tray product containing the contents is made,
In the tray product manufacturing method of discharging the punching residue by winding the punching residue remaining after punching the tray product from one longitudinal end of the punching residue,
The region where the lid film is heat-welded to the flange has a first heat-welding region belonging to the tray product and a second heat-welding region belonging to the punching residue,
The first heat welding region has a narrow region separated from the first and second side edges sandwiching the opening corner of the tray product, and the third and fourth opposing the first and second side edges. And a wide region in contact with the side edge of the narrow region, the narrow region has a smaller width of thermal welding than the wide region,
The second heat welding region is
First and second longitudinal weld zones located at first and second widthwise end portions located at both widthwise ends of the punching residue and extending substantially continuously in the longitudinal direction;
A longitudinal intermediate weld zone located in the middle in the width direction located in the middle of the punching residue in the width direction and extending intermittently in the longitudinal direction;
A method for manufacturing a tray product, comprising: a split welding zone located in a portion extending in the width direction of the punching residue and intermittently extending in the width direction.   Of the portion extending in the width direction of the punching residue, the divided weld zone of the longitudinal start end portion located at the longitudinal end of the lid film is connected to the second longitudinal weld zone by a welding bridge. Item 5. A tray product manufacturing method according to Item 4.

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