The present application generally relates to the field of containers. Plastic and foamed plastic containers and trays are used to hold various food items, such as meat, poultry, bakery items, fruit, vegetables, etc., as well as other products. Often, plastic or foamed plastic trays are covered with a transparent plastic wrapping (herein referred to as “overwrapping” or an “overwrap”) to protect the food or other items on the tray. Foamed plastic, often foamed polystyrene, is in widespread use as a tray or food container. However, for environmental reasons, it is anticipated that the use of foamed plastic, or foamed polystyrene, for use as a tray or container is likely to be phased out over time. Hard plastic trays and containers have also been used to contain food and other items. Unfortunately, the edges of hard plastic trays and containers are prone to cut the overwrapping during or after the overwrapping is placed over the tray or container, resulting in a “leaker” which allows oxygen to enter and spoil food placed in the tray or container.
In view of the foregoing, it would be desirable to provide a tray or container having outer edges that do not cut the overwrapping during or after the overwrapping has been placed over the tray or container.
The present embodiments relate to a tray or container that is made of a material other than foamed plastic, or foamed polystyrene, having outer edges that are not prone to cut through the overwrapping placed over the tray or container during or after the overwrapping is placed over the tray or container.
In one aspect, a tray is described. The tray comprises a base having a base perimeter. The tray also comprises a wall extending upward from the base perimeter. The wall is continuous around the base perimeter. The wall includes an inner wall surface and an outer wall surface. The wall includes a first end at the base perimeter and a second end opposite the first end. The tray further includes a flange extending outward from the second end of the wall. The flange includes one or more hinges, a top flange surface, a bottom flange surface, and a trim edge. The flange and the one or more hinges extend continuously around the second end of the wall. At least a portion of the flange is configured to be folded downward such that at least a portion of the bottom flange surface is closer to the outer wall surface after being folded.
In another aspect, a method of manufacturing a tray is described. The method comprises forming a base having a base perimeter and a wall extending upward from the base perimeter. The wall is continuous around the base perimeter. The wall includes an inner wall surface and an outer wall surface. The wall includes a first end at the base perimeter and a second end opposite the first end. The method also includes forming a flange extending outward from the second end of the wall. The flange includes one or more hinges, a top flange surface, a bottom flange surface, and a trim edge. The flange and the one or more hinges extend continuously around the second end of the wall. At least a portion of the flange is configured to be folded downward such that at least a portion of the bottom flange surface is closer to the outer wall surface after being folded.
Other implementations will become apparent to those of ordinary skill in the art by reading the following detailed description, with reference where appropriate to the accompanying drawings.
Example embodiments are described herein with reference to the drawings.
All the figures are schematic, not necessarily to scale, and generally show parts which are necessary to explain example embodiments, wherein other parts may be omitted or merely suggested.
This description describes aspects and example embodiments (i.e., implementations) of and/or pertaining to a tray (i.e., an article of manufacture).
The trays of the example embodiments can be formed using various processes, such that the trays of the example embodiments comprises a thermo-formed tray, an injection molded tray, or a compression molded tray.
The trays of the example embodiments is made of a material. As an example, the material used to make the tray comprises polyethylene terephthalate (PET), amorphous polyethylene terephthalate (APET), crystalline polyethylene terephthalate (CPET), recycled polyethylene terephthalate (RPET), polyethylene terephthalate glycol-modified (PETG), polylactic acid (PLA), polypropylene, high impact polystyrene sheet (HIPS), or pulp fiber. Other examples of the material are possible.
At least some of the trays described in this description includes one or more hinges. The one or more hinges can be formed by coining the material, creasing the material, contacting the material with a serrated blade, contacting the material with a heated serrated blade, thinning the material, contacting the material with a creasing knife, contacting the material with a heated creasing knife, or contacting the material with a punch and die. Other examples of a process or step for forming a hinge on a tray of the example embodiments are also possible. In accordance with at least some embodiments including multiple hinges within a flange, at least one of the hinges is continuous (i.e., a continuous hinge) and at least one of the hinges is non-continuous (i.e., a non-continuous hinge).
A hinge can have a uniform width. Alternatively, a hinge can have a width that varies. As an example, a hinge can have a first width within the straight portions of the hinge and a second width within curved portions of the hinge. The curved portions (i.e., transition portions or transition hinge portions) can join two straight portions of the hinge and vice versa. In accordance with the foregoing example, the first width can be wider than the second width or vice versa. Additionally, in accordance with the foregoing example, the curved (transition) portions can be disposed at a corner of the flange. In at least some embodiments, a width of the transition hinge portion is wider than a width of a first hinge portion (e.g., a first straight portion of the hinge) and a width of a second hinge portion (e.g., a second straight portion of the hinge).
A hinge can have a uniform depth. Alternatively, a hinge can have a depth that varies. As an example, a hinge can have a first depth within the straight portions of the hinge and a second depth within curved portions of the hinge. In accordance with the foregoing example, the first depth can be deeper than the second depth or vice versa. In at least some examples, the depth of the hinge formed in trays can be varied by varying how far a knife moves within the flange of those trays.
A hinge of the example embodiments can include interrupted cuts within the material. A hinge of a hinged tray can abut an end of a wall of the tray. The interrupted cuts can be formed using a serrated knife or via some other means. A hinge of a hinged tray can abut a trim end of the tray. A hinge of a hinged tray can abut a pocket of the tray. A hinge of a hinged tray can abut a step of a pocket of the tray.
The trays of the example embodiments can have any of a variety of a shapes. For example, a tray of the example embodiments can be rectangular, square, circular, oval, heart-shaped or some other shape.
In this description, the articles “a,” “an,” and “the” are used to introduce elements and/or functions of the example embodiments. The intent of using those articles is that there is one or more of the introduced elements and/or functions.
The tray 20 is a hinge-less tray (i.e., a tray without a hinge). As shown in one or more of
The base 23 has an interior surface and an exterior surface.
Next,
As noted above, a tray can be made using polyethylene terephthalate (PET) or another material that results in a trim edge having a sharp tear point with respect to an overwrap applied to the tray or to an overwrap applied to another tray proximate the trim edge. The trim edge of a tray made of PET is more rigid/stiff than the trim edge of a traditional foam trays made of polystyrene. In many cases, the trim edge is more likely to act as a sharp tear point when tray has been packed with content, such as a pound of fruit, vegetables, or meat.
In that regard,
Next,
A portion 68 of the flange 65 between the hinge 66 and the trim edge 67 is folded (e.g., bent) at and/or via the hinge 66. As an example, the portion 68 of the flange 65 can be folded prior to placement of an overwrap 80 onto the tray 60. As another example, the portion 68 of the flange 65 can be folded due to placement of the overwrap 80 onto the tray 60. In at least some embodiments, a portion 69 of the flange 65 between the hinge 66 and the second end 64 of the wall 62 is not folded as a result of folding the flange 65 at and/or via the hinge 66. In that regard, the portion 69 of the flange 65 remains unfolded (i.e., unbent).
Similarly, a portion 78 of the flange 75 between the hinge 76 and the trim edge 77 is folded (e.g., bent) at and/or via the hinge 76. As an example, the portion 78 of the flange 75 can be folded prior to placement of an overwrap 81 onto the tray 70. As another example, the portion 78 of the flange 75 can be folded due to placement of the overwrap 81 onto the tray 70. In at least some embodiments, a portion 79 of the flange 75 between the hinge 76 and the second end 74 of the wall 72 is not folded as a result of folding the flange 75 at and/or via the hinge 76. In that regard, the portion 79 of the flange 75 remains unfolded (i.e., unbent).
With the portion 68 of the flange 65 folded, a sharp tear point of the trim edge 67 is disposed away from the overwrap 80 and the overwrap 81. Similarly, with the portion 78 of the flange 75 folded, a sharp tear point of the trim edge 77 is disposed away from the overwrap 80 and the overwrap 81. As a result, movement of the tray 60 and the tray 70 relative to one another significantly reduces the likelihood that the trim edge 67 or the trim edge 77 will tear the overwrap 80, 81 applied to the tray 60, 70, respectively.
In accordance with at least some example embodiments in this description, the flange is configured to be folded via an application of an overwrap material to the tray, and the trim edge does not contact the overwrap material during or after application of the overwrap material to the tray. In accordance with at least some example embodiments in this description, the flange is configured to be pre-folded before an overwrap material is applied to the tray. In accordance with at least some example embodiments in this description, the flange is configured to be folded downward so that the trim edge contacts the outer wall surface. In accordance with at least some example embodiments in this description, the flange can also be folded upward.
Next,
Based on the top view of the tray 40 shown in
The tray 40 is a hinged tray (i.e., a tray with one or more hinges). As shown in one or more of
The wall 44 includes a first end 45 (i.e., a first end of the wall 44) and a second end 46 (i.e., a second end of the wall 44). The first end 45 and the second end 46 are at opposite ends of the wall 44.
The wall 44 extends continuously around the base 43. For example, starting at any point on the base perimeter 47, the wall 44 continues around the base perimeter 47 until reaching the starting point without any breaks in the wall 44. With the base 43 positioned as shown in
The flange 41 extends continuously around an entirety of the second end 46 of the wall 44. Stated another way, the flange 41 extends away from the second end 46 of the wall 44 (i.e., extends away from the entire second end 46 of the wall 44. The trim edge 42 extends continuously around the flange 41. The hinge 48 extends continuously around the flange 41. The hinge 48 can include a single cut or multiple interrupted cuts within the flange 41.
The flange 41 includes a portion 57 of the flange 41 between the hinge 48 and the trim edge 42. The flange 41 includes a portion 58 of the flange 41 between the hinge 48 and the second end 46 of the wall 44. In at least some embodiments, at least some of the portion 58 of the flange 41 is folded as a result of folding the flange 41 at and/or via the hinge 48. In at least some other embodiments, the portion 58 of the flange 41 is not folded as a result of folding the flange 41 at and/or via the hinge 48. In that regard, the portion 58 of the flange 41 remains unfolded (i.e., unbent).
As shown in
In accordance with at least some embodiments, the first portion of the flange and/or the second portion of the flange is arranged as a bumper (i.e., a flange bumper or a cushion). A flange bumper can be compressible. A flange bumper can have a rounded surface. An overwrap applied to a tray at the location of a flange bumper is less likely to tear when the overwrap at the flange bumper contacts the overwrap located at a flange bumper of another hinged tray during shipment or movement of the trays as compared to an overwrap applied to traditional trays.
The base 43 has an interior surface and an exterior surface.
The tray 40 can be manufactured using a mold and processes to generate a tray using an example material described in this description. In accordance with at least some embodiments, the hinge 48 is created within the flange 41 using any means described in this description as a way to generate a hinge 48. Other example means for creating the hinge 48 are also possible.
In embodiments arranged as a circular hinged tray, the tray can have a diameter, such as a first diameter of the top surface of tray and a second diameter of the bottom surface of the tray. In embodiments arranged as an elliptical hinged tray, the tray can have a first dimension for a semi-major axis of the top surface of the tray and a second dimension for a semi-minor axis of the top surface. The circular and elliptical hinged trays also have a height.
In accordance with at least some embodiments, a length of a flange of a tray (either or both the longitudinal or transverse length of the tray) is greater than a height of the wall of the tray. In other words, in those embodiments, a length of a tray is greater than a height of the tray.
In accordance with at least some other embodiments, a length of a flange of a tray (either or both the longitudinal or transverse length of the tray) is less than or equal to a height of the wall of the tray. In other words, in those other embodiments, a length of a tray is less than or equal to a height of the tray.
Next,
In particular,
Based on the top view of the tray 40 shown in
As shown in one or more of
One or more of
As noted above, the base 43 has an interior surface and an exterior surface.
Next,
Based on the top view of the tray 100 shown in
In
The wall 104 includes a first end 105 (i.e., a first end of the wall 104) and a second end 106 (i.e., a second end of the wall 104). The first end 105 and the second end 106 are at opposite ends of the wall 104.
The wall 104 extends continuously around the base 103. For example, starting at any point on the base perimeter 107, the wall 104 continues around the base perimeter 107 until reaching the starting point without any breaks in the wall 104. With the base 103 positioned as shown in
The flange 101 extends continuously around an entirety of the second end 106 of the wall 104. Stated another way, the flange 101 extends away from the second end 106 of the wall 104 (i.e., extends away from the entire second end 106 of the wall 104. The trim edge 102 extends continuously around the flange 101. The hinge 108 extends continuously around the flange 101. The hinge 108 can include a single cut or multiple interrupted cuts within the flange 101.
The flange 101 includes a portion 109 of the flange 101 between the hinge 108 and the second end 106 of the wall 104. The flange 101 includes a portion 110 of the flange 101 between the hinge 108 and the trim edge 102. In at least some embodiments, the portion 109 of the flange 101 is not folded as a result of folding the flange 101 at and/or via the hinge 108. In that regard, the portion 109 of the flange 101 remains unfolded (i.e., unbent). In at least some other embodiments, at least some of the portion 109 of the flange 101 is folded as a result of folding the flange 101 at and/or via the hinge 108. The flange 101 includes a top flange surface 119 extending from the trim edge 102 to the second end 106 of the wall 104. The flange 101 includes a bottom flange surface 121 extending from the trim edge 102 to the wall 104. The portion 109 of the flange 101 and/or the portion 110 of the flange 101 can be arranged as a flange bumper.
The base 103 has an interior surface and an exterior surface.
As shown in
Next,
Based on the top view of the tray 150 shown in
In
The wall 154 includes a first end 155 (i.e., a first end of the wall 154) and a second end 156 (i.e., a second end of the wall 154). The first end 155 and the second end 106 are at opposite ends of the wall 154.
The wall 154 extends continuously around the base 153. For example, starting at any point on the base perimeter 157, the wall 154 continues around the base perimeter 157 until reaching the starting point without any breaks in the wall 154. With the base 153 positioned as shown in
The flange 151 extends continuously around an entirety of the second end 156 of the wall 154. Stated another way, the flange 151 extends away from the second end 156 of the wall 154 (i.e., extends away from the entire second end 156 of the wall 154. The trim edge 152 extends continuously around the flange 151. The hinge 158 extends continuously around the flange 151. The hinge 158 can include a single cut or multiple interrupted cuts within the flange 151.
The flange 151 includes a portion 159 of the flange 151 between the hinge 158 and the second end 156 of the wall 154. The flange 151 includes a portion 160 of the flange 151 between the hinge 158 and the trim edge 152. In at least some embodiments, the portion 159 of the flange 151 is not folded as a result of folding the flange 151 at and/or via the hinge 158. In that regard, the portion 159 of the flange 151 remains unfolded (i.e., unbent). In at least some other embodiments, at least some of the portion 159 of the flange 151 is folded as a result of folding the flange 151 at and/or via the hinge 158. The flange 151 includes a top flange surface 169 extending from the trim edge 152 to the second end 156 of the wall 154. The flange 151 includes a bottom flange surface 171 extending from the trim edge 152 to the wall 154. The portion 159 of the flange 151 and/or the portion 160 of the flange 151 can be arranged as a flange bumper.
The base 153 has an interior surface and an exterior surface.
As shown in
Next,
Based on the top view of the tray 200 shown in
In
The wall 204 includes a first end 205 (i.e., a first end of the wall 204) and a second end 206 (i.e., a second end of the wall 204). The first end 205 and the second end 206 are at opposite ends of the wall 204.
The wall 204 extends continuously around the base 203. For example, starting at any point on the base perimeter 207, the wall 204 continues around the base perimeter 207 until reaching the starting point without any breaks in the wall 204. With the base 203 positioned as shown in
The flange 201 extends continuously around an entirety of the second end 206 of the wall 204. Stated another way, the flange 201 extends away from the second end 206 of the wall 204 (i.e., extends away from the entire second end 206 of the wall 204. The trim edge 202 extends continuously around the flange 201. The hinge 208 extends continuously around the flange 201. The hinge 208 can include a single cut or multiple interrupted cuts within the flange 201.
The flange 201 includes a portion 209 of the flange 201 between the hinge 208 and the second end 206 of the wall 204. The flange 201 includes a portion 210 of the flange 201 between the hinge 208 and the trim edge 202. In at least some embodiments, the portion 209 of the flange 201 is not folded as a result of folding the flange 201 at and/or via the hinge 208. In that regard, the portion 209 of the flange 201 remains unfolded (i.e., unbent). In at least some other embodiments, at least some of the portion 209 of the flange 201 is folded as a result of folding the flange 201 at and/or via the hinge 208. The flange 201 includes a top flange surface 219 extending from the trim edge 202 to the second end 206 of the wall 204. The flange 201 includes a bottom flange surface 221 extending from the trim edge 202 to the wall 204. The portion 209 of the flange 201 and/or the portion 210 of the flange 201 can be arranged as a flange bumper.
The base 203 has an interior surface and an exterior surface.
As shown in
Next,
Based on the top view of the tray 250 shown in
In
The wall 254 includes a first end 255 (i.e., a first end of the wall 254) and a second end 256 (i.e., a second end of the wall 254). The first end 255 and the second end 256 are at opposite ends of the wall 254.
The wall 254 extends continuously around the base 253. For example, starting at any point on the base perimeter 257, the wall 254 continues around the base perimeter 257 until reaching the starting point without any breaks in the wall 254. With the base 253 positioned as shown in
The flange 251 extends continuously around an entirety of the second end 256 of the wall 254. Stated another way, the flange 251 extends away from the second end 256 of the wall 254 (i.e., extends away from the entire second end 256 of the wall 254. The trim edge 252 extends continuously around the flange 251. The hinge 258 extends continuously around the flange 251. The hinge 258 can include a single cut or multiple interrupted cuts within the flange 251.
The flange 251 includes a portion 259 of the flange 251 between the hinge 258 and the second end 256 of the wall 254. The flange 251 includes a portion 260 of the flange 251 between the hinge 258 and the trim edge 252. In at least some embodiments, the portion 259 of the flange 251 is not folded as a result of folding the flange 251 at and/or via the hinge 258. In that regard, the portion 259 of the flange 251 remains unfolded (i.e., unbent). In at least some other embodiments, at least some of the portion 259 of the flange 251 is folded as a result of folding the flange 251 at and/or via the hinge 258. The flange 251 includes a top flange surface 269 extending from the trim edge 252 to the second end 256 of the wall 254. The flange 251 includes a bottom flange surface 271 extending from the trim edge 252 to the wall 254. The portion 259 of the flange 251 and/or the portion 260 of the flange 251 can be arranged as a flange bumper.
The base 253 has an interior surface and an exterior surface.
In accordance with at least some embodiments, the flange 251 includes a single hinge (i.e., the hinge 258), and the hinge 258 abuts the second end 256 of the wall 254. In accordance with at least some other embodiments, the flange 251 includes a single hinge (i.e., the hinge 258), and the hinge 258 is disposed between the trim edge 252 and a portion of the flange 251 that abuts the second end 256 of the wall 254.
Next,
Based on the top view of the tray 300 shown in
In
The wall 304 includes a first end 305 (i.e., a first end of the wall 304) and a second end 306 (i.e., a second end of the wall 304). The first end 305 and the second end 306 are at opposite ends of the wall 304.
The wall 304 extends continuously around the base 303. For example, starting at any point on the base perimeter 307, the wall 304 continues around the base perimeter 307 until reaching the starting point without any breaks in the wall 304. With the base 303 positioned as shown in
The flange 301 extends continuously around an entirety of the second end 306 of the wall 304. Stated another way, the flange 301 extends away from the second end 306 of the wall 304 (i.e., extends away from the entire second end 306 of the wall 304. The trim edge 302 extends continuously around the flange 301. The hinge 308 extends continuously around the flange 301. The hinge 308 can include a single cut or multiple interrupted cuts within the flange 301.
The flange 301 includes a portion 309 of the flange 301 between the hinge 308 and the second end 306 of the wall 304. The flange 301 includes a portion 310 of the flange 301 between the hinge 308 and the trim edge 302. In at least some embodiments, the portion 309 of the flange 301 is not folded as a result of folding the flange 301 at and/or via the hinge 308. In that regard, the portion 309 of the flange 301 remains unfolded (i.e., unbent). In at least some other embodiments, at least some of the portion 309 of the flange 301 is folded as a result of folding the flange 301 at and/or via the hinge 308. The flange 301 includes a top flange surface 319 extending from the trim edge 302 to the second end 306 of the wall 304. The flange 301 includes a bottom flange surface 321 extending from the trim edge 302 to the wall 304. The portion 309 of the flange 301 and/or the portion 310 of the flange 301 can be arranged as a flange bumper.
The base 303 has an interior surface and an exterior surface.
As shown in
Next,
Based on the top view of the tray 350 shown in
In
The wall 354 includes a first end 355 (i.e., a first end of the wall 354) and a second end 356 (i.e., a second end of the wall 354). The first end 355 and the second end 356 are at opposite ends of the wall 354.
The wall 354 extends continuously around the base 353. For example, starting at any point on the base perimeter 357, the wall 354 continues around the base perimeter 357 until reaching the starting point without any breaks in the wall 354. With the base 353 positioned as shown in
The flange 351 extends continuously around an entirety of the second end 356 of the wall 354. Stated another way, the flange 351 extends away from the second end 356 of the wall 354 (i.e., extends away from the entire second end 356 of the wall 354. The trim edge 352 extends continuously around the flange 351. The hinge 358 extends continuously around the flange 351. The hinge 358 can include a single cut or multiple interrupted cuts within the flange 351.
The flange 351 includes a portion 359 of the flange 351 between the hinge 358 and the second end 356 of the wall 354. The flange 351 includes a portion 360 of the flange 351 between the hinge 358 and the trim edge 352. In at least some embodiments, the portion 359 of the flange 351 is not folded as a result of folding the flange 351 at and/or via the hinge 358. In that regard, the portion 359 of the flange 351 remains unfolded (i.e., unbent). In at least some other embodiments, at least some of the portion 359 of the flange 351 is folded as a result of folding the flange 351 at and/or via the hinge 358. The flange 351 includes a top flange surface 369 extending from the trim edge 352 to the second end 356 of the wall 354. The flange 351 includes a bottom flange surface 371 extending from the trim edge 352 to the wall 354. The portion 359 of the flange 351 and/or the portion 360 of the flange 351 can be arranged as a flange bumper.
The base 353 has an interior surface and an exterior surface.
Next, in accordance with at least some embodiment, a hinged tray includes one or more channels within the flange. A channel within a flange can be referred to as a “channel,” a “flange channel,” a ‘flange moat,” a “moat,” a “flange pocket,” or a “pocket,” or some other term.
As shown in
As noted, the tray 400 is a hinged tray such that the tray 400 includes one or more hinges within the flange 401. As an example, the tray 400 includes a hinge 408. As shown in
In other example embodiments, a hinge can be disposed within a channel wall, such as the channel wall 406 or the channel wall 407. In still other example, embodiments, a hinge can be disposed within a channel bank, such as the channel bank 404 or the channel bank 405. The channel bank 404 can extend from an apex of the top flange surface 414 between the trim edge 411 and the channel 403. The channel bank 405 can extend from an apex of the top flange surface 414 between the second end 402 of the wall 412 and the channel 403. The channel bank 404 and/or the channel bank 405 can be arranged as a flange bumper.
Next,
The tray 450 is a hinged tray. The tray 450 includes a flange 451, a trim edge 452, a base 453, a wall 454, and a hinge 459. The wall 454 includes a first end 455 and a second end 456. The first end 455 and the second end 456 are at opposite ends of the wall 454. The wall 454 extends continuously around the base 453. The flange 451 extends continuously around an entirety of the second end 456 of the wall 454. The trim edge 452 extends continuously around the flange 451. The base 453 includes and/or is defined by a base perimeter 457. As shown in
The flange 451 extends continuously around an entirety of the second end 456 of the wall 454. Stated another way, the flange 451 extends away from the second end 456 of the wall 454 (i.e., extends away from the entire second end 456 of the wall 454. The trim edge 452 extends continuously around the flange 451. The hinge 459 extends continuously around the flange 451. The hinge 459 can include a single cut or multiple interrupted cuts within the flange 451.
The flange 451 includes a portion 467 of the flange 451 between the hinge 459 and the second end 456 of the wall 454. The flange 451 includes a portion 468 of the flange 451 between the hinge 459 and the trim edge 452.
Next,
As noted, the flange 451 includes the portion 467 of the flange 451 between the hinge 459 and the second end 456 of the wall 454, and the portion 468 of the flange 451 between the hinge 459 and the trim edge 452. In at least some embodiments, the portion 467 of the flange 451 is not folded as a result of folding the flange 451 at and/or via the hinge 459. In that regard, the portion 467 of the flange 451 remains unfolded (i.e., unbent). In at least some other embodiments, at least some of the portion 467 of the flange 451 is folded as a result of folding the flange 451 at and/or via the hinge 459.
The flange 451 includes a top flange surface 461 extending from the trim edge 452 to the second end 456 of the wall 454. The flange 451 includes a bottom flange surface 462 extending from the trim edge 452 to the wall 454.
Next,
The tray 550 is a hinged tray. The tray 550 includes a flange 551, a trim edge 552, a base 553, a wall 554, a hinge 559, and a hinge 571. The wall 554 includes a first end 555 and a second end 556. The first end 555 and the second end 556 are at opposite ends of the wall 554. The wall 554 extends continuously around the base 553. The flange 551 extends continuously around an entirety of the second end 556 of the wall 554. The trim edge 552 extends continuously around the flange 551. The base 553 includes and/or is defined by a base perimeter 557. As shown in
The flange 551 extends continuously around an entirety of the second end 556 of the wall 554. Stated another way, the flange 551 extends away from the second end 556 of the wall 554 (i.e., extends away from the entire second end 556 of the wall 554. The trim edge 552 extends continuously around the flange 551. The hinge 559 extends continuously around the flange 551. Similarly, the hinge 579 extends continuously around the flange 551. The hinge 559 can include a single cut or multiple interrupted cuts within the flange 551. The hinge 579 can include a single cut or multiple interrupted cuts within the flange 451.
The flange 551 includes a portion 567 of the flange 551 between the hinge 571 and the second end 556 of the wall 554. The flange 551 includes a portion 568 of the flange 551 between the hinge 559 and the trim edge 552. The flange 551 includes a portion 572 of the flange 551 between the hinge 559 and/or the hinge 571. In at least some embodiments, the portion 567 of the flange 551 is not folded as a result of folding the flange 551 at and/or via the hinge 559 and/or the hinge 571. In that regard, the portion 567 of the flange 551 remains unfolded (i.e., unbent).
The portion 568 of the flange 551 and the portion 572 of the flange 551 can be referred to as a pair of multiple portions of the flange 551 (e.g., a first pair). The portion 567 of the flange 551 and the portion 572 of the flange 551 can be referred to as a pair of multiple portions of the flange 551 (e.g., a second pair). The portion 567 of the flange 551 and the portion 568 of the flange 551 can be referred to as a pair of multiple portions of the flange 551 (e.g., a third pair).
Next,
As noted, the flange 551 includes the portion 567 of the flange 551 between the hinge 571 and the second end 556 of the wall 554, the portion 568 of the flange 551 between the hinge 559 and the trim edge 552, and the portion 572 of the flange 551 between the hinge 559 and the hinge 579. In at least some embodiments, the portion 567 of the flange 551 is not folded as a result of folding the flange 551 at and/or via the hinge 571 and/or the hinge 559. In that regard, the portion 567 of the flange 551 remains unfolded (i.e., unbent). In at least some other embodiments, at least some of the portion 567 of the flange 551 is folded as a result of folding the flange 551 at and/or via the hinge 559 and/or the hinge 571.
The flange 551 includes a top flange surface 561 extending from the trim edge 552 to the second end 556 of the wall 554. The flange 551 includes a bottom flange surface 562 extending from the trim edge 552 to the wall 554.
In accordance with at least some embodiments, the hinge 559 and the hinge 571 are continuous hinges. In accordance with at least some other embodiments, one of the hinge 559 or the hinge 571 is a continuous hinge and the other is a non-continuous hinge.
In accordance with at least some embodiments, the hinge 571 abuts the second end 556 of the wall 554. In accordance with at least some other embodiments, the portion 567 of the flange 551 extends between the hinge 571 and the second end 556 of the wall 554.
Next,
Based on the top view of the tray 500 shown in
In
The wall 504 includes a first end 505 (i.e., a first end of the wall 504) and a second end 506 (i.e., a second end of the wall 504). The first end 505 and the second end 506 are at opposite ends of the wall 504.
The wall 504 extends continuously around the base 503. For example, starting at any point on the base perimeter 507, the wall 504 continues around the base perimeter 507 until reaching the starting point without any breaks in the wall 504. With the base 503 positioned as shown in
The flange 501 extends continuously around an entirety of the second end 506 of the wall 504. Stated another way, the flange 501 extends away from the second end 506 of the wall 504 (i.e., extends away from the entire second end 506 of the wall 504. The trim edge 502 extends continuously around the flange 501. The hinge 508 extends continuously around the flange 501. The hinge 522 extends continuously around the flange 501. The hinge 508 can include a single cut or multiple interrupted cuts within the flange 501. The hinge 522 can include a single cut or multiple interrupted cuts within the flange 501.
The flange 501 includes a portion 509 of the flange 501 between the hinge 508 and the second end 506 of the wall 504. The flange 501 includes a portion 510 of the flange 501 between the hinge 508 and the hinge 522. The flange 501 includes a portion 523 of the flange 501 between the hinge 522 and the trim edge 502.
In at least some embodiments, the portion 509 of the flange 501 is not folded as a result of folding the flange 501 at and/or via the hinge 508 and/or the hinge 522. In that regard, the portion 509 of the flange 501 remains unfolded (i.e., unbent). In that regard, the portion 509 of the flange 501 remains unfolded (i.e., unbent). In at least some other embodiments, at least some of the portion 509 of the flange 501 is folded as a result of folding the flange 501 at and/or via the hinge 508 and/or the hinge 522.
In at least some embodiments, the portion 509 of the flange 501 and the portion 510 of the flange 501 are not folded as a result of folding the flange 501 at and/or via the hinge 522. In that regard, the portion 509 of the flange 501 and the portion 510 of the flange 501 remain unfolded (i.e., unbent). In at least some other embodiments, at least some of the portion 509 of the flange 501 and/or at least some of the portion 510 of the flange 501 is folded as a result of folding the flange 501 at and/or via the hinge 508 and/or the hinge 522. The portion 509 of the flange 501 and/or the portion 510 of the flange 501 can be arranged as a flange bumper.
The portion 509 of the flange 501 and the portion 510 of the flange 501 can be referred to as a pair of multiple portions of the flange 501 (e.g., a first pair). The portion 510 of the flange 501 and the portion 523 of the flange 501 can be referred to as a pair of multiple portions of the flange 501 (e.g., a second pair). The portion 509 of the flange 501 and the portion 523 of the flange 501 can be referred to as a pair of multiple portions of the flange 501 (e.g., a third pair).
The flange 501 includes a top flange surface 519 extending from the trim edge 502 to the second end 506 of the wall 504. The flange 501 includes a bottom flange surface 521 extending from the trim edge 502 to the wall 504.
The base 503 has an interior surface and an exterior surface.
In accordance with at least some embodiments, the hinge 508 and the hinge 522 are continuous hinges. In accordance with at least some other embodiments, one of the hinge 508 or the hinge 522 is a continuous hinge and the other is a non-continuous hinge.
Next,
Block 751 includes forming a base having a base perimeter and a wall extending upward from the base perimeter. The wall is continuous around the base perimeter. The wall includes an inner wall surface and an outer wall surface. The wall includes a first end at the base perimeter and a second end opposite the first end.
Block 752 includes forming a flange extending outward from the second end of the wall. The flange includes one or more hinges, a top flange surface, a bottom flange surface, and a trim edge. The flange and the one or more hinges extend continuously around the second end of the wall. At least a portion of the flange is configured to be folded downward such that at least a portion of the bottom flange surface is closer to the outer wall surface after being folded.
Table A includes drawing reference numbers corresponding to different examples and aspects discussed in the description of block 751 and block 752.
In accordance with at least some embodiments, the tray is made of a material, and the one or more hinges are formed by coining the material, creasing the material, contacting the material with a serrated blade, contacting the material with a heated serrated blade, thinning the material, contacting the material with a creasing knife, contacting the material with a heated creasing knife, or contacting the material with a punch and die. In at least some of those embodiments, forming the base and the flange occur at a first station and form the one or more hinges occurs at a second station using the creasing knife, the heated creasing knife, the serrated blade, the heated serrated blade, or the punch and die. In accordance with at least some other embodiments, the tray can be formed at a single station (e.g., a trim-in-place station, a form and post-trim machine) or via a rotary drum and trim press. In accordance with at least still some other embodiments, a hinge of a hinged tray can be formed at forming tool where the tray is formed, or the hinge can be formed with a knife or blade or another tool after the tray is formed, or the hinge can be formed after the tray is trimmed. Other examples of forming the one or more hinges are also possible.
Trimming the tray can include removing material from a sheet of the material. The removed material can include material of the sheet adjacent to an outside profile of the tray. Trimming the tray can include trimming multiple trays from a sheet of the material used to form the trays.
In accordance with at least some embodiments, such as the embodiments discussed in the preceding paragraph, the material used to form the tray comprises: polyethylene terephthalate (PET), amorphous polyethylene terephthalate (APET), crystalline polyethylene terephthalate (CPET), recycled polyethylene terephthalate (RPET), polyethylene terephthalate glycol-modified (PETG), polylactic acid (PLA), polypropylene, high impact polystyrene sheet (HIPS), or pulp fiber.
In accordance with at least some embodiments, the tray moves to the second station after the base and the flange have been formed at the first station. The tray can be trimmed to size and/or separated from adjacent formed trays at the second station or at a third station after the one or more hinges are formed at the second station.
In accordance with at least some embodiments, the flange is turned (e.g., bent) at a station after the tray is formed. As an example, the station can include a punch and die. The turning can occur by pushing the flange through a smaller opening after the tray and/or flange is trimmed. An ejector plate at the station can be configured to push the flange through an opening smaller than the flange to rotate the flange. In this way, less turning (e.g., bending) of the flange is required during applying of an overwrap onto the tray.
In accordance with at least some embodiments, the one or more hinges include interrupted cuts within the material. Since the hinge extends continuously around the flange, the interrupted cuts extend continuously around the flange. As an example, the interrupted cuts can be formed using a serrated knife, such as a heated serrated knife, or a punch and die. A thickness of the material at each cut of the interrupted cut is thinner than a thickness of the material at the positions where the interruption in the cut exists. Forming a hinge with interrupted cuts can result in a hinge that is easier to fold as compared to a hinge formed by a continuous thinning of the 5 material around the flange. A depth of the interrupted cuts can be selected so that a portion of the flange does not break or tear when folding the flange
While various aspects and embodiments are described herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope being indicated by the claims, along with the full scope of equivalents to which such claims are entitled. It is also to be understood that the terminology used herein is for the purpose of describing example embodiments, and is not intended to be limiting.
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