CN105857817A - Heat-insulated container - Google Patents
Heat-insulated container Download PDFInfo
- Publication number
- CN105857817A CN105857817A CN201510029983.6A CN201510029983A CN105857817A CN 105857817 A CN105857817 A CN 105857817A CN 201510029983 A CN201510029983 A CN 201510029983A CN 105857817 A CN105857817 A CN 105857817A
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- Prior art keywords
- membrane layer
- leaching membrane
- layer
- density polyethylene
- paper
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Abstract
The invention discloses a heat-insulated container. The heat-insulated container comprises a bottom wall and an enclosure wall, wherein the enclosure wall is jointed with the bottom wall, and the bottom wall and the enclosure wall jointly define a containing space. The enclosure wall comprises a paper layer, an inner lamination layer, an outer lamination layer and an ink layer, wherein the inner lamination layer is arranged on the inner side of the paper layer in a covering mode and can be heated, foamed and expanded, the outer lamination layer is arranged on the outer side of the paper layer in a covering mode, and the ink layer is arranged on the outer lamination layer in a covering mode. The inner lamination layer is composed of a first component which comprises low-density polyethylene. The outer lamination layer is composed of a second component which comprises high-density polyethylene. The containing space is directly encircled through the inner lamination layer, the heat energy of liquid contained in the containing space can be directly insulated, the heat energy dissipation opportunity is reduced, and accordingly the heat insulation and preservation effects are improved.
Description
Technical field
The present invention relates to a kind of container, particularly relate to a kind of made of paper and appearance of tool effect of heat insulation
Device.
Background technology
Owing to paper-made vessel is relative to Poly Foam (Expandable Polystyrene is called for short EPS)
Tableware more environmental protection, therefore has become as catering trade, fast food industry most-often used with food processing industry
Food container.And be more to attract client to note, to stimulate its purchase intention, Ye Zhetong
Often can print all kinds of patterns, such as food or food materials pattern or advertisement literary composition at paper-made vessel outer surface
A surname's printed words etc..
Additionally, general paper-made vessel would generally be coated with leaching membrane layer at the inner surface of its ply of paper,
So as to making this paper-made vessel waterproof, but it is heat insulation poor with heat insulation effect.Aforementioned in order to improve
Problem, has dealer to provide a kind of paper-made vessel having effect of heat insulation, and the outer surface of its ply of paper is usual
One layer of foamable foam films layer can be set, and make this foam films layer have by high-temperature heating to send out
Bubble structure.The problem scalded one's hand to avoid this paper-made vessel by the effect of heat insulation of this foam films layer,
And improve heat insulation effect.
But, owing to this foam films layer is disposed on the outermost layer of whole paper-made vessel, therefore when
Heat energy just can be completely cut off by this foam films layer after leaching membrane layer, ply of paper, the most aforementioned made of paper
Container insulator and heat insulation effect are the most preferable.
In addition, the outer surface in response to cup is generally of foaming structure so that in appearance made of paper
Device outer surface faces some problems when printing all kinds of pattern.Specifically, when at this foam films
When being coated with general ink on layer to form the figuratum layer of ink of tool, owing to general ink can suppress to send out
Bubble and expansion so that during crossing this foam films layer of high-temperature heating, the entirety of this foam films layer
Foaming degree uneven, degrees of expansion uneven, causes the layer of ink being coated on outside this foam films layer to be broken
Split, and then reduce apparent aesthetic feeling.Again because foaming degree is uneven, thus reduce this foaming
The effect of heat insulation of film layer.
To this end, the synchronization ink that dealer would generally use price higher is coated on this foam films layer
On, during this foam films layer of high-temperature heating, this synchronization ink can foam in this foam films layer
While expansion, synchronize therewith to expand outward, thus form the figuratum layer of ink of tool.In order to outward
See smooth, need repeatedly to print synchronization ink on manufacturing, not only construct more difficult, its operation
The most complicated, thus improve manufacturing cost.
Summary of the invention
It is an object of the invention to provide a kind of heat insulation heat-insulated container excellent with heat insulation effect.
Heat-insulated container of the present invention, comprises a diapire, and one engages and common with this diapire
With defining a leg containing space.This leg includes a ply of paper, and this ply of paper has one
The individual medial surface containing space towards this, and a lateral surface in contrast to this medial surface.Should
Leg also includes a medial surface being coated on this ply of paper and can be heated the interior pouring of foaming and intumescing
Film layer, the outer leaching membrane layer of a lateral surface being coated on this ply of paper, and one to be coated on this outer
Layer of ink on leaching membrane layer.This interior leaching membrane layer is to be made up of the first component, described first component bag
Containing low density polyethylene (LDPE)；This outer leaching membrane layer is to be made up of the second component, described second component bag
Containing high density polyethylene (HDPE).
Heat-insulated container of the present invention, described second component also comprises low density polyethylene (LDPE).
Heat-insulated container of the present invention, the content of the high density polyethylene (HDPE) of described second component is the least
Content in low density polyethylene (LDPE).
Heat-insulated container of the present invention, the content of the high density polyethylene (HDPE) of described second component is
50wt% to 70wt%.
Heat-insulated container of the present invention, this diapire includes a ply of paper, an interior leaching membrane layer, with
And an outer leaching membrane layer；The ply of paper of this diapire has a medial surface containing space towards this,
And a lateral surface in contrast to this medial surface；This interior leaching membrane layer is coated on the inner side of this ply of paper
Face also can be heated foaming and intumescing；The outer leaching membrane layer of this diapire is coated on outside the ply of paper of this diapire
Side.
The beneficial effects of the present invention is: this interior leaching membrane layer with foaming effect is arranged at this
The medial surface of leg, directly surrounds this by this interior leaching membrane layer and contains space, thus can directly every
Heat this contain the heat energy of liquid of space content dress, reduce the chance of heat energy dissipation, thus improve
The problem that effect of heat insulation scalds one's hand to avoid this heat-insulated container, and improve heat insulation effect.
Accompanying drawing explanation
Fig. 1 is a stereogram of an embodiment of heat-insulated container of the present invention；
Fig. 2 is a partial schematic top elevation cutter layout view of the present embodiment, main this heat-insulated container of display
One diapire and the structure of a leg；
Fig. 3 is a partial schematic top elevation cutter layout view of the present embodiment, the main layer body showing this leg
Structure；
Fig. 4 is a partial cross-sectional top view of the present embodiment, the main both sides showing this leg
The position engaged.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the present invention is described in detail, it is noted that,
In the following description content, similar element represents to be identically numbered.
Refering to Fig. 1,2,3,4, an embodiment of heat-insulated container of the present invention, can be used for containing
Food materials, this heat-insulated container exterior design can be tubbiness, bowl-shape, plate-like, or other may be used to
Take up the external form of accommodating food materials, the present embodiment and relevant graphic in, be to enter as a example by tubbiness
Row explanation.
The heat-insulated container of the present embodiment comprises a diapire 1, and one connects with this diapire 1
Close and jointly define a leg 2 containing space 3.
For shape and structure, this diapire 1 include one be positioned at this bottom containing space 3 and
In flat bottom 101, and periphery of 101 down projection and in ring bottom this
The junction surface 102 of shape.This leg 2 includes a ring being surrounded on this surrounding containing space 3
Around portion 201, and one the most up turns down from this cincture portion 201 root edge and turning in the form of a ring
Folding part 202.
Owing to the shape and structure of this heat-insulated container is Known designs, and numerous types, therefore in reality
Shi Shang, the structure of this heat-insulated container is not limited with above-mentioned assembling mode.
For layer body forms, this diapire 1 includes: 11, interior leaching membrane layer of a ply of paper
12, and an outer leaching membrane layer 13.This ply of paper 11 has one and contains space 3 towards this
Medial surface 111, and a lateral surface 112 in contrast to this medial surface 111.This interior film
Layer 12 is coated on the medial surface 111 of this ply of paper 11 and can be heated foaming and intumescing, this outer film
Layer 13 is coated on the lateral surface 112 of this ply of paper 11.
This leg 2 includes: a ply of paper 22, outer leaching membrane layer of 21, interior leaching membrane layer
23, and a layer of ink 24.This ply of paper 21 has an inner side containing space 3 towards this
Face 211, and a lateral surface 212 in contrast to this medial surface 211.This interior leaching membrane layer 22
It is coated on the medial surface 211 of this ply of paper 21 and foaming and intumescing can be heated, this outer leaching membrane layer 23
It is coated on the lateral surface 212 of this ply of paper 21, and this layer of ink 24 is coated on this outer leaching membrane layer 23
On.
In the selection of material, the material of described interior leaching membrane layer 12,22 is identical, is all by
One component is constituted, and described first component comprises low density polyethylene (LDPE) (Low Density
Polyethylene, is called for short LDPE).
The material of described outer leaching membrane layer 13,23 is identical, is all to be made up of the second component, institute
The material stating the second component can use following two aspect.
One of them aspect is that described second component only comprises high density polyethylene (HDPE) (High Density
Polyethylene, is called for short HDPE), another aspect then comprises for described second component simultaneously
When high density polyethylene (HDPE) and low density polyethylene (LDPE), the most described outer leaching membrane layer 13,23 be by
High density polyethylene (HDPE) is mixing with low density polyethylene (LDPE) to be made.
In the present invention, the second component of described outer leaching membrane layer 13,23 must comprise high density
Polyethylene, the high density polyethylene (HDPE) of the second component of the most described outer leaching membrane layer 13,23
Content can not be 0wt%.This is because the height in the second component of described outer leaching membrane layer 13,23
Density polyethylene has an effect intercepting moisture, again because the of described interior leaching membrane layer 12,22
The material of one component is low density polyethylene (LDPE), then in heating so that described interior leaching membrane layer 12,22
During foaming and intumescing, the moisture in described ply of paper 11,21 can be toward low density polyethylene (LDPE) material
Described interior leaching membrane layer 12,22 direction that material is main is fled, it is thus possible to make described interior leaching membrane layer 12,
22 foaming.
As long as additionally, the second component of described outer leaching membrane layer 13,23 comprises high density polyethylene (HDPE)
Time, described outer leaching membrane layer 13,23 will not expand, and then this layer of ink 24 can be selected for general ink.
Described general ink is water-base ink material, concretely the limited public affairs of big world printing ink paint share
The model PF-G-110IN product that department produces, but it is not limited to aforementioned citing.
Further, the high density polyethylene (HDPE) of the second component of described outer leaching membrane layer 13,23
Content is not less than the content of low density polyethylene (LDPE).It is preferred that the high density of described second component is gathered
The content of ethene is 50wt% to 70wt%, and the containing of the low density polyethylene (LDPE) of described second component
Amount is 30wt% to 50wt%.As for the numerical value meaning of the bound of aforementioned content, say after appearance
Bright.
On manufacturing, when this diapire 1 makes this paper-made vessel with the laminating of this leg 2, first should
Leg 2 encompasses tubulose, makes the outer leaching membrane layer 23 of the end side of this leg 2 paste with layer of ink 24
Together in the interior leaching membrane layer 22 of another side of this leg 2, the most as shown in Figure 4, make to be superimposed
Outer leaching membrane layer 23 heats with this interior leaching membrane layer 22 and mutually binds.
Then, as in figure 2 it is shown, the bottom 101 of this diapire 1 is to abut against toward lower limit to enclose in this
Folding portion 202 apical margin of wall 2, and the junction surface 102 of this diapire 1 is in this leg 2
Between cincture portion 201 and this folding portion 202 opposite sides, then carry out hot melt heating, make this cincture
Interior leaching membrane layer 22 bottom portion 201 and at this folding portion 202 is bonding on this junction surface 102 respectively
Interior leaching membrane layer 12 and outer leaching membrane layer 13.
On using, the present invention will have the described interior leaching membrane layer 12,22 of foaming effect respectively
It is arranged at the medial surface 111 of this diapire 1 and the medial surface 211 of this leg 2, in described
Leaching membrane layer 12,22 directly surrounds this and contains space 3, thus can contain space 3 by the most heat insulation this
The heat energy of the liquid inside contained, reduces the chance of heat energy dissipation, thus improves effect of heat insulation to keep away
Exempt from the problem that this heat-insulated container scalds one's hand, and improve heat insulation effect.
Further, high-density polyethylene is comprised when the second component of described outer leaching membrane layer 13,23
During alkene, described outer leaching membrane layer 13,23 will not expand, and then this layer of ink 24 can be selected for general ink
Water.Owing to the price of general ink is relatively inexpensive, thus material cost can be reduced, meanwhile, because
The construction being coated with general ink is easier, thus can simplify operation and reduce manufacturing cost.
Again when the second component of described outer leaching membrane layer 13,23 comprise simultaneously high density polyethylene (HDPE) with
During low density polyethylene (LDPE), by high density polyethylene (HDPE) with low density polyethylene (LDPE) mixed material as institute
State the design of outer leaching membrane layer 13,23, it is possible to decrease described outer leaching membrane layer 13,23 fusing point, can drop
Low this leg 2 is encompassed tubulose during, outer leaching membrane layer 23 and the interior pouring making to be superimposed
Heating-up temperature when film layer 22 mutually binds, and make the interior leaching membrane layer 22 of this folding portion 202
Heating-up temperature when mutually binding with the outer leaching membrane layer 13 at this junction surface 102, so also can save
The energy and reduce manufacturing cost.
Therefore, the content of the high density polyethylene (HDPE) of described outer leaching membrane layer 13,23 second component is not
Less than the content of low density polyethylene (LDPE), thus reduce described outer leaching membrane layer 13,23 fusing point and
Maintain the effect intercepting moisture.It is preferred that the content of the high density polyethylene (HDPE) of described second component
For 50wt% to 70wt%, and the content of the low density polyethylene (LDPE) of described second component is 30wt%
To 50wt%.
Below by way of effect of experimental example and the comparative example explanation present invention, wherein, each experimental example with
Each comparative example is all the size being fabricated to the hand cup of 700cc capacity on the market.
In the test of heat insulation effect, in each experimental example with each comparative example, it is respectively put into 220 grams
Start timing after the water of 25 DEG C of ice cube and 300cc, then stand observation, until ice cube is complete
Required time is recorded during CL.It is the longest that ice cube is completely dissolved required time, represents the guarantor of container
Temp effect is the best.
Foaming degree is then measure experimental example 1,2,3,4 and comparative example 2 the most respectively described
Interior leaching membrane layer 12,22 before foaming with foaming after difference in thickness, and measure comparative example 1
Described outer leaching membrane layer 13,23 before foaming with foaming after difference in thickness, and compare send out
Thickness after bubble is relative to the expansion multiple of the thickness before foaming, wherein, the highest table of expansion multiple
Show that foaming degree is good.
Table 1
Refering to table 1, from comparative example 1, owing to the material of described interior leaching membrane layer is high density
Polyethylene is without foaming, and the material of described outer leaching membrane layer is low density polyethylene (LDPE) and can foam.
But, because foamable described outer leaching membrane layer is disposed on the outermost layer of whole paper-made vessel,
Therefore just can be by foamable described outer pouring after heat energy passes described interior leaching membrane layer, this ply of paper
The isolation of film layer, therefore comparative example 1 is heat insulation the most preferable with heat insulation effect.
Review, from experimental example 1,2,3,4, due to described interior leaching membrane layer 12,22
Material is that low density polyethylene (LDPE) foams, and directly surrounds this by described interior leaching membrane layer 22 and contains
Space 3, thus can the most heat insulation this contain space 3 in the heat energy of liquid that contains, reduce heat
The chance that can scatter and disappear, thus improve the problem that effect of heat insulation scalds one's hand to avoid this heat-insulated container, and
Improve heat insulation effect.Therefore, the heat insulation effect of experimental example 1,2,3,4, really it is better than ratio
Relatively example 1.
Again in experimental example 2,3,4, because the second component of described outer leaching membrane layer 13,23
Comprise high density polyethylene (HDPE) and low density polyethylene (LDPE), it is possible to decrease described outer leaching membrane layer 13,23 simultaneously
Fusing point, and then the heating-up temperature of described outer leaching membrane layer 13,23 can be reduced, so also can save
The energy and reduce manufacturing cost.Therefore, the height of the second component of described outer leaching membrane layer 13,23
The content of density polyethylene can be preferably 50wt% to 70wt%.
It should be noted that in the present invention, the second component of described outer leaching membrane layer 13,23
High density polyethylene (HDPE) must be comprised, the second component of the most described outer leaching membrane layer 13,23
The content of high density polyethylene (HDPE) can not be 0wt%.This is because described outer leaching membrane layer 13,23
High density polyethylene (HDPE) in second component has the effect intercepting moisture, again because of described interior film
The material of the first component of layer 12,22 is low density polyethylene (LDPE), then in heating so that described
During interior leaching membrane layer 12,22 foaming and intumescing, the moisture in described ply of paper 11,21 can be past
Described interior leaching membrane layer 12,22 direction that low-density polyethylene material is main is fled, it is thus possible to make
Described interior leaching membrane layer 12,22 foams.
Referring again to table 1, from comparative example 2, the second component of the most described outer leaching membrane layer
When the content of high density polyethylene (HDPE) is 0wt%, the second component of described outer leaching membrane layer is interior with described
The material of the first component of leaching membrane layer is all low density polyethylene (LDPE), due to the of described outer leaching membrane layer
Two components lose the effect intercepting moisture without high density polyethylene (HDPE), and then in heating so that institute
During stating interior leaching membrane layer foaming and intumescing, the moisture in described ply of paper can be simultaneously toward described outer pouring
Film layer is fled with described interior leaching membrane layer, thus reduces the foaming of described interior leaching membrane layer, further drops
Heat insulation and the heat insulation effect of low described interior leaching membrane layer.The most therefore, the described interior film of comparative example 2
The foaming degree (expansion multiple) of layer is significantly lower than the described interior leaching membrane layer of experimental example 1,2,3,4
12, the foaming degree of 22.
It addition, the foaming degree of the described outer leaching membrane layer 13,23 of experimental example 1 is the highest, this is
Because in experimental example 1, the second component of described outer leaching membrane layer 13,23 only comprises high density and gathers
Ethene, the content of the second component of the most described outer leaching membrane layer 13,23 is that 100wt% is highly dense
Degree polyethylene, can effectively intercept moisture and outwards run off, make in described ply of paper 11,21
Moisture is fled the most inwardly, and namely making moisture is intensively main towards low-density polyethylene material
Described interior leaching membrane layer 12,22 direction flee inwardly, make described interior leaching membrane layer 12,22 inwardly
Foaming.Therefore, moisture can be pinned by described outer leaching membrane layer 13,23 at outermost layer and avoid water
Divide and outwards evapotranspire, and then improve the foaming degree of described interior leaching membrane layer 12,22.
Review, the content of the high density polyethylene (HDPE) of the described interior leaching membrane layer 12,22 of comparative example 1
For 100wt%, moisture can be intercepted by effect and inwardly run off, make the moisture in described ply of paper 11,21
Flee the most outwardly, namely make moisture intensively towards the institute that low-density polyethylene material is master
State outer leaching membrane layer 13,23 direction to flee outwardly, make described outer leaching membrane layer 13,23 foam outwardly.
But the aforementioned design foamed outwardly, adds the described interior pouring based on high-density polyethylene material
Film layer 12,22 is arranged at innermost layer and cannot pin moisture and avoid moisture outwards to evapotranspire, therefore,
The foaming degree of the outer leaching membrane layer 13,23 of comparative example 1 is less than experimental example 1.
In sum, the present invention will have the described interior leaching membrane layer 12,22 of foaming effect respectively
It is arranged at the medial surface 111 of this diapire 1 and the medial surface 211 of this leg 2, in described
Leaching membrane layer 12,22 directly surrounds this and contains space 3, thus can contain space 3 by the most heat insulation this
The heat energy of the liquid inside contained, reduces the chance of heat energy dissipation, thus improves effect of heat insulation to keep away
Exempt from the problem that this heat-insulated container scalds one's hand, and improve heat insulation effect, so the present invention really can be reached
Purpose.
Claims (5)
1. a heat-insulated container, comprises a diapire, and one engages with this diapire
And jointly defining a leg containing space, this leg includes a ply of paper, this ply of paper
There is a medial surface containing space towards this, and outside one in contrast to this medial surface
Side；It is characterized in that: this leg also includes a medial surface being coated on this ply of paper can
The heated interior leaching membrane layer of foaming and intumescing, the outer film of a lateral surface being coated on this ply of paper
Layer, and a layer of ink being coated on this outer leaching membrane layer；This interior leaching membrane layer is by first group
Part is constituted, and described first component comprises low density polyethylene (LDPE)；This outer leaching membrane layer is by second
Component is constituted, and described second component comprises high density polyethylene (HDPE).
Heat-insulated container the most according to claim 1, it is characterised in that: described second group
Part also comprises low density polyethylene (LDPE).
Heat-insulated container the most according to claim 2, it is characterised in that: described second group
The content of the high density polyethylene (HDPE) of part is not less than the content of low density polyethylene (LDPE).
Heat-insulated container the most according to claim 2, it is characterised in that: described second group
The content of the high density polyethylene (HDPE) of part is 50wt% to 70wt%.
Heat-insulated container the most according to claim 2, it is characterised in that: this diapire includes
One ply of paper, an interior leaching membrane layer, and an outer leaching membrane layer；The ply of paper of this diapire has
One medial surface containing space towards this, and a lateral surface in contrast to this medial surface；
This interior leaching membrane layer is coated on the medial surface of this ply of paper and can be heated foaming and intumescing；This diapire
Outer leaching membrane layer is coated on the lateral surface of the ply of paper of this diapire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510029983.6A CN105857817A (en) | 2015-01-21 | 2015-01-21 | Heat-insulated container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510029983.6A CN105857817A (en) | 2015-01-21 | 2015-01-21 | Heat-insulated container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105857817A true CN105857817A (en) | 2016-08-17 |
Family
ID=56622997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510029983.6A Pending CN105857817A (en) | 2015-01-21 | 2015-01-21 | Heat-insulated container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105857817A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114435759A (en) * | 2020-11-05 | 2022-05-06 | 统奕包装股份有限公司 | Paper container |
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|---|---|---|---|---|
| US4435344A (en) * | 1980-12-29 | 1984-03-06 | Nihon Dixie Company, Limited | Method for producing a heat-insulating paper container from a paper coated or laminated with a thermoplastic synthetic resin film |
| JPH0542929A (en) * | 1991-08-05 | 1993-02-23 | Nippon Dekishii:Kk | Container and production thereof |
| WO1998055281A1 (en) * | 1997-06-06 | 1998-12-10 | Fort James Corporation | Heat insulating paper cups |
| JP2009066856A (en) * | 2007-09-12 | 2009-04-02 | Kyugi Kofun Yugenkoshi | Method of manufacturing heat insulated paper container |
| CN103622416A (en) * | 2012-08-24 | 2014-03-12 | 杨仕宇 | Paper container |
| JP2014227220A (en) * | 2013-05-27 | 2014-12-08 | 大日本印刷株式会社 | Paper cup |
-
2015
- 2015-01-21 CN CN201510029983.6A patent/CN105857817A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4435344A (en) * | 1980-12-29 | 1984-03-06 | Nihon Dixie Company, Limited | Method for producing a heat-insulating paper container from a paper coated or laminated with a thermoplastic synthetic resin film |
| JPH0542929A (en) * | 1991-08-05 | 1993-02-23 | Nippon Dekishii:Kk | Container and production thereof |
| WO1998055281A1 (en) * | 1997-06-06 | 1998-12-10 | Fort James Corporation | Heat insulating paper cups |
| JP2009066856A (en) * | 2007-09-12 | 2009-04-02 | Kyugi Kofun Yugenkoshi | Method of manufacturing heat insulated paper container |
| CN103622416A (en) * | 2012-08-24 | 2014-03-12 | 杨仕宇 | Paper container |
| JP2014227220A (en) * | 2013-05-27 | 2014-12-08 | 大日本印刷株式会社 | Paper cup |
Non-Patent Citations (1)
| Title |
|---|
| 何凤珍，王建霞: "线型低密度聚乙烯与高密度聚乙烯共混改性的研究", 《塑料》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114435759A (en) * | 2020-11-05 | 2022-05-06 | 统奕包装股份有限公司 | Paper container |
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