CN221273788U - Plastic cup structure with label in injection molding mode - Google Patents
Plastic cup structure with label in injection molding mode Download PDFInfo
- Publication number
- CN221273788U CN221273788U CN202322876291.8U CN202322876291U CN221273788U CN 221273788 U CN221273788 U CN 221273788U CN 202322876291 U CN202322876291 U CN 202322876291U CN 221273788 U CN221273788 U CN 221273788U
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- Prior art keywords
- cup
- label
- cup body
- plastic cup
- mold injection
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- 239000004033 plastic Substances 0.000 title claims abstract description 46
- 229920003023 plastic Polymers 0.000 title claims abstract description 46
- 238000001746 injection moulding Methods 0.000 title claims abstract description 25
- 210000001503 joint Anatomy 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 15
- 239000007924 injection Substances 0.000 claims abstract description 15
- 238000002372 labelling Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000004743 Polypropylene Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 13
- 239000012790 adhesive layer Substances 0.000 claims description 11
- 239000010410 layer Substances 0.000 claims description 11
- 230000008719 thickening Effects 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 238000007639 printing Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 210000003205 muscle Anatomy 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 2
- 238000000071 blow moulding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
The utility model provides an in-mold injection plastic cup structure with a label, which comprises a cylindrical cup body made by injection molding, wherein a label film surrounding the cylindrical surface of the cup body is arranged on the outer side of the cup body, the label film and the cup body are of an integrated structure made by an in-mold labeling process, the label film is formed by butt joint of two ends of a flat film after being rolled, a butt joint gap is reserved between the two ends of the label film, and a convex rib corresponding to the butt joint gap is arranged on the inner side wall of the cup body.
Description
Technical Field
The utility model particularly relates to an in-mold injection molding plastic cup structure with labels.
Background
Many beverages in the market adopt plastic cups as packaging containers, the plastic cups are usually manufactured into an integral structure by injection molding, in order to display product information, a label is adhered and connected on the outer side wall of the plastic cups by adopting an in-mold labeling technology gradually, the in-mold labeling technology is mainly used for blow molding and injection molding products of PP, PE, PET and other materials, namely, the printed in-mold labeling is put into a blow molding cavity and an injection molding cavity before blow molding and injection molding, when the mold is closed for blow molding and injection, special adhesive on the in-mold labeling is melted under the action of high temperature and high pressure in the mold, the special adhesive is melted with the surface of a bottle body or an injection molding part into a whole, and after the mold is opened, the finished in one step by referring to a patent of CN201580076064.2, a name of an in-mold labeling container and a manufacturing method thereof. However, in the process of developing plastic cups for packaging beverages for a long time, the inventor finds that the label adhered to the outer side wall of the plastic cup in the mold is very firm, but the label is generally cylindrical or frustum-shaped by abutting the two ends of the rolled flat film, and the abutting gap of the film is particularly easy to crack, especially when the plastic cup is extruded in the process of transportation or use, the film is cracked at the abutting gap.
The present utility model has been made in view of the above-described drawbacks.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provides an in-mold injection molding plastic cup structure with labels, which can improve the product quality.
The utility model is realized by the following technical scheme:
The utility model provides an in-mold injection molding takes label plastic cup structure, includes the columniform cup that injection molding made, and the cup outside is equipped with the label film that encircles its cylinder, and label film and cup are by the integrated into one piece structure that in-mold labeling technology made, label film by one smooth film roll up the back both ends butt joint and form, leave the butt joint gap between the both ends of label film, the cup in the lateral wall on be equipped with the protruding muscle that corresponds the setting with the butt joint gap.
The plastic cup structure with the label is characterized in that the plastic cup body is of an integrated structure made of PP polypropylene, and the label film comprises an adhesive layer made of PP polypropylene, a printing layer positioned on the upper side of the adhesive layer and a protective film layer positioned on the upper side of the printing layer.
In the plastic cup structure with the label in the in-mold injection molding mode, the thickness of the convex rib is H1, the thickness of the side wall of the cup body is H0, and the ratio T=H2 0 of the thickness of the convex rib to the thickness of the side wall of the cup body is H0, wherein T is more than or equal to 0.4 and less than or equal to 0.6.
The plastic cup structure with the label is molded in the mold, and the lower end of the convex rib is provided with the concave arc transition section.
The plastic cup structure with the label is molded in the mold, and the convex ribs are provided with 4 strips.
The plastic cup structure with the label is molded in the mold, and the ribs are uniformly distributed along the circumferential direction.
The plastic cup structure with the label is molded in the mold, and the inner side wall of the cup body is provided with a plurality of material thickening convex blocks connected with the bottom of the cup body.
The plastic cup structure with the label is molded in the mold, and the material thickening convex blocks are uniformly distributed along the circumferential direction.
The plastic cup structure with the label is molded in the mold, and the material thickening convex blocks and the convex ribs are staggered.
Compared with the prior art, the utility model has the following advantages:
according to the plastic cup with the label in the mold, the convex ribs are arranged on the inner wall of the cup body at the corresponding positions of the butt joint gaps, so that a better fusion bonding effect is achieved between the bonding layer near the butt joint gaps and the cup body during injection molding.
Drawings
FIG. 1 is a perspective view of a plastic cup according to a first embodiment of the present utility model;
FIG. 2 is an exploded pictorial view of a plastic cup according to a first embodiment of the present utility model;
FIG. 3 is a schematic cross-sectional view of a middle portion of a plastic cup according to a first embodiment of the utility model;
FIG. 4 is an enlarged schematic view of a portion of a label film according to a first embodiment of the present utility model;
FIG. 5 is a perspective view of a plastic cup according to a second embodiment of the present utility model;
FIG. 6 is a schematic top view of a plastic cup according to a second embodiment of the present utility model;
fig. 7 is a schematic longitudinal section of a plastic cup according to a second embodiment of the present utility model.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
the orientations described in the specification of the present utility model, such as "upper", "lower", "left", "right", "front", "rear", etc., are based on the orientations of the figures, and are for the purpose of describing relationships between components, and are not intended to indicate unique or absolute positional relationships between the components, but are merely one embodiment of the present utility model, and are not intended to limit embodiments thereof.
Embodiment one:
As shown in fig. 1 and 2, an in-mold injection plastic cup structure with a label comprises a cylindrical cup body 1 made by injection molding, a label film 2 surrounding the cylindrical surface of the cup body 1 is arranged at the outer side of the cup body 1, the label film 2 and the cup body 1 are of an integrated structure made by an in-mold labeling process, the label film 2 is formed by butt joint of two ends of a flat film after being rolled, a butt joint gap 200 is reserved between the two ends of the label film 2, the label film 2 is in a fan shape, the two ends of the label film 2 are two fan-shaped straight edges, namely, 2a and 2b, the two fan-shaped straight edges are butt-jointed to form a frustum shape, of course, the label film 2 can also be rectangular, two opposite sides of the rectangle are butt-jointed to form a cylinder shape, the two ends of the label film 2 are provided with convex ribs 11 which are arranged corresponding to the butt joint gap 200 on the inner side wall of the cup body 1, the cup body 1 is of an integral structure made of PP polypropylene, as shown in fig. 4, the label film 2 comprises an adhesive layer 21 made of PP polypropylene, a printing layer 22 positioned on the upper side of the adhesive layer 21 and a protective film layer 23 positioned on the upper side of the printing layer 22, so that the label film 2 is rolled into a frustum shape and placed into an injection mold cavity through an in-mold injection molding process, the protective film layer 23 of the label film 2 is adhered outwards to the inner wall of the injection mold cavity, the adhesive layer 21 faces inwards, then high-temperature molten PP polypropylene is injected into the injection mold cavity to form the cup body 1, the adhesive layer 21 is melted and fused with the cup body 1 into a whole under the action of high temperature and high pressure in the mold, as shown in fig. 3, a larger amount of molten PP can be injected at the convex rib 11, so that the adhesive layer 21 and the cup body 1 can achieve a better fusion bonding effect near the butt joint gap 200, meanwhile, after the plastic cup is manufactured, the cup body 1 at the butt joint gap 200 is not deformed in the transportation and use process due to the reinforcing effect of the convex rib 11, so that the label film 2 is prevented from cracking at the butt joint gap 200 due to deformation of the cup body 1.
Of course, the cup body 1 may be made of PP polypropylene, PE, PET, or other materials, so long as the adhesive layer 21 of the label film 2 is made of the same type of materials.
Preferably, as shown in fig. 3, the thickness of the rib 11 is H1, and the thickness of the side wall of the cup body 1 is H0, so that the ratio t=h1/H0 of the thickness of the rib 11 to the thickness of the side wall is H0, and T is 0.4.ltoreq.0.6, when T < 0.4, since the thickness of the rib 11 is too small, sufficient stacking cannot be caused during injection molding, and sufficient strength cannot be provided, and when T > 0.6, since the thickness of the rib 11 is too large, the inner accommodation space of the cup body is affected, and the control of the production cost is not facilitated.
Embodiment two:
in-mold injection plastic cup structure with labels is different from the first embodiment in that, in order to make the product have better structural stability, the convex ribs 11 extend from the top of the cup body 1 to the vicinity of the bottom, the convex ribs 11 and the lower ends of the convex ribs 11 are provided with concave arc transition sections 111, the convex ribs can also be provided with a plurality of concave arc transition sections, and 4 plastic cup structures are provided in the embodiment, as shown in fig. 5 to 7, so that in the injection molding process, the convex ribs 11 can serve as important injection molding flow channels for molten plastic to flow from the bottom of the cup body 1 to the top of the cup body 1, and the arc transition sections 111 can greatly reduce the flow resistance of the molten plastic, and the arc transition sections 111 can also reduce stress concentration at the lower ends of the convex ribs 11 and strengthen the structural strength.
Preferably, the ribs 11 are uniformly distributed along the circumferential direction.
Preferably, the inner side wall of the cup body 1 is provided with a plurality of material thickening protrusions 12 connected with the bottom of the cup body 1, so that the material thickening protrusions 12 can be used as important injection molding flow passages for molten plastics to flow from the bottom of the cup body 1 to the top of the cup body 1 in the injection molding process.
Preferably, the thickened projections 12 are uniformly distributed in the circumferential direction.
As the preference, because the molten plastic is firstly injected from the bottom center of the cup body 1, the molten plastic can quickly enter the side wall of the cup body 1 through the material thickening convex block 12 after passing through the whole bottom of the cup body 1, and then flows to the top of the cup body 1 through the side wall of the cup body 1 and the convex rib 11, in order to improve the injection molding efficiency, make the injection molding more uniform and improve the quality of products, the material thickening convex block 12 and the convex rib 11 are staggered.
The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (9)
1. An in-mold injection molding plastic cup structure with a label, which is characterized in that: including cylindrical cup (1) that injection moulding made, cup (1) outside is equipped with around its cylinder label film (2), label film (2) and cup (1) are by the integral type structure that in-mould labeling technology made, label film (2) by one smooth film roll up the back both ends butt joint and form, leave butt joint gap (200) between the both ends of label film (2), cup (1) inside wall on be equipped with protruding muscle (11) that correspond setting with butt joint gap (200).
2. The in-mold injection labeled plastic cup structure according to claim 1, wherein: the cup body (1) is of an integrated structure made of PP polypropylene, the label film (2) comprises an adhesive layer (21) made of PP polypropylene, a printing layer (22) located on the upper side of the adhesive layer (21) and a protective film layer (23) located on the upper side of the printing layer (22), and the adhesive layer (21) is adhered to the outer side face of the cup body (1) through an in-mold labeling process.
3. The in-mold injection labeled plastic cup structure according to claim 1, wherein: the thickness of the convex rib (11) is H 1, the thickness of the side wall of the cup body (1) is H 0, and the ratio T=H2 1/H0 of the thickness of the convex rib (11) to the thickness of the side wall H 0 is more than or equal to 0.4 and less than or equal to 0.6.
4. The in-mold injection labeled plastic cup structure according to claim 1, wherein: the lower end of the convex rib (11) is provided with a concave arc transition section (111).
5. The in-mold injection labeled plastic cup structure according to claim 1, wherein: the convex ribs (11) are provided with 4 strips.
6. The in-mold injection labeled plastic cup construction according to claim 5, wherein: the convex ribs (11) are uniformly distributed along the circumferential direction.
7. The in-mold injection labeled plastic cup structure according to claim 6, wherein: the inner side wall of the cup body (1) is provided with a plurality of material thickening convex blocks (12) connected with the bottom of the cup body (1).
8. The in-mold injection labeled plastic cup construction according to claim 7, wherein: the material thickening convex blocks (12) are uniformly distributed along the circumferential direction.
9. The in-mold injection labeled plastic cup structure according to claim 8, wherein: the material thickening convex blocks (12) and the convex ribs (11) are staggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322876291.8U CN221273788U (en) | 2023-10-25 | 2023-10-25 | Plastic cup structure with label in injection molding mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322876291.8U CN221273788U (en) | 2023-10-25 | 2023-10-25 | Plastic cup structure with label in injection molding mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221273788U true CN221273788U (en) | 2024-07-05 |
Family
ID=91704345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322876291.8U Active CN221273788U (en) | 2023-10-25 | 2023-10-25 | Plastic cup structure with label in injection molding mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221273788U (en) |
-
2023
- 2023-10-25 CN CN202322876291.8U patent/CN221273788U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |