CN100522600C - Laminated film for paper pulp moulded goods - Google Patents
Laminated film for paper pulp moulded goods Download PDFInfo
- Publication number
- CN100522600C CN100522600C CNB2003101130644A CN200310113064A CN100522600C CN 100522600 C CN100522600 C CN 100522600C CN B2003101130644 A CNB2003101130644 A CN B2003101130644A CN 200310113064 A CN200310113064 A CN 200310113064A CN 100522600 C CN100522600 C CN 100522600C
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- CN
- China
- Prior art keywords
- paper pulp
- moulded articles
- layer
- pulp moulded
- laminated film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229920001131 Pulp (paper) Polymers 0.000 title claims description 72
- 238000010030 laminating Methods 0.000 claims description 36
- -1 polypropylene Polymers 0.000 claims description 20
- 238000003475 lamination Methods 0.000 claims description 12
- 239000004698 Polyethylene Substances 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 9
- 229920000573 polyethylene Polymers 0.000 claims description 9
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 claims description 9
- 229920001155 polypropylene Polymers 0.000 claims description 9
- 229920000728 polyester Polymers 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 2
- 229920001897 terpolymer Polymers 0.000 claims 4
- 239000004925 Acrylic resin Substances 0.000 claims 1
- 229920000178 Acrylic resin Polymers 0.000 claims 1
- 229920000915 polyvinyl chloride Polymers 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 82
- 229920005672 polyolefin resin Polymers 0.000 abstract description 21
- 229920001038 ethylene copolymer Polymers 0.000 abstract description 16
- 229920001225 polyester resin Polymers 0.000 abstract description 5
- 239000004645 polyester resin Substances 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 2
- 239000002344 surface layer Substances 0.000 abstract description 2
- 239000012790 adhesive layer Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 25
- 239000011347 resin Substances 0.000 description 25
- 239000011248 coating agent Substances 0.000 description 15
- 238000000576 coating method Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 14
- 238000012360 testing method Methods 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- 235000013305 food Nutrition 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 238000012856 packing Methods 0.000 description 10
- 229920001684 low density polyethylene Polymers 0.000 description 7
- 239000004702 low-density polyethylene Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 3
- 238000003851 corona treatment Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 229920006167 biodegradable resin Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 2
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000002650 laminated plastic Substances 0.000 description 2
- 229920006381 polylactic acid film Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 235000021067 refined food Nutrition 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000007666 vacuum forming Methods 0.000 description 2
- JMMZCWZIJXAGKW-UHFFFAOYSA-N 2-methylpent-2-ene Chemical compound CCC=C(C)C JMMZCWZIJXAGKW-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 235000014443 Pyrus communis Nutrition 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 229920000704 biodegradable plastic Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- XSMJZKTTXZAXHD-UHFFFAOYSA-N ethene;2-methylprop-2-enoic acid Chemical compound C=C.CC(=C)C(O)=O XSMJZKTTXZAXHD-UHFFFAOYSA-N 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003145 methacrylic acid copolymer Polymers 0.000 description 1
- 229940117841 methacrylic acid copolymer Drugs 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 235000021485 packed food Nutrition 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Laminated Bodies (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
In the laminated film, a surface layer of a polyolefin resin or a polyester resin and an adhesive layer which is made of a polyolefin resin containing an ethylene copolymer of at least 5 wt.% of a comonomer content and is stuck to the pulp molding are laminated through an intermediate layer of a polyolefin resin.
Description
Technical field
The present invention relates to the paper pulp moulded articles laminated film, the adherence that relates to not only when being attached at the paper pulp moulded articles surface is good, the mouldability excellence, and can after attaching, make paper pulp moulded articles have enhanced water resistance, living, the stable on heating paper pulp moulded articles laminated film of oil resistant.
Background technology
Paper pulp moulded articles is used for padded coaming and the industrial product transportation padded coaming of egg transportation with pallet, apple, pear and other fruits transportation more, pre-packing as FF is also very common with the pallet use, and it is by dry manufacturing the after laminated paper slurry and water on the metal porous formed mould are with the raw material of old paper aqueous dispersion pulp.
The paper pulp moulded articles of Zhi Zaoing is more cheap like this, can save and simplify packing, storage, loading and unloading and labour etc., because it has the elasticity of appropriateness, so have the effect of padded coaming, has long ago just used as packaging material simultaneously.But in recent years because the appearance of the plastic molded article of vinyl chloride, foam styrene system, the suffered attention of paper pulp moulded articles has reduced.
But, because aforesaid paper pulp moulded articles have price comparison cheaply, discarded or advantage such as incinerate, can reuse easily, to efficent use of resources today of sensitization day by day, people have begun the research to this paper pulp moulded articles again in society.
When using this paper pulp moulded articles in the packaging for foodstuff etc., directly filling food not only produces problem on the health in paper pulp moulded articles, and the moisture that contains in the food and oil content be impregnated in the paper pulp moulded articles, produces and leaks.
So when using this paper pulp moulded articles in the packing of food etc., the face coating that contact at the inner face of paper pulp moulded articles container etc. and food etc. has hydrophobic coating, or the attaching plastic sheeting etc.This paper pulp moulded articles is increased processing such as resistance to water, oil resistivity.
As an example of such processing, the coating compositions and methods has following method on paper pulp moulded articles.In the paper pulp moulded articles manufacturing process, after just having copied paper pulp, from the inside of this paper pulp moulded articles with before the vacuum attraction or with vacuum attraction the time, at surperficial coating reagent, with imparting water repellency, improve the method for intensity (referring to Patent Document 1), or press empty forming process at paper pulp moulded articles surface laminated plastics forming layer by vacuum forming method or vacuum, form the method (referring to Patent Document 2, patent documentation 3) of the clad vessel of integration.
As prior art bibiographical information of the present invention following document is arranged.
Patent documentation 1 spy opens 2002-129499 communique (2-5 page or leaf, Fig. 1-Fig. 4)
Patent documentation 2 spies open flat 10-218235 communique (2-5 page or leaf, Fig. 1)
Patent documentation 3 spies open the 2002-2655 communique (2-4 page or leaf, Fig. 1, Fig. 2)
Summary of the invention
But, in the said method, adopt when the method for paper pulp moulded articles surface laminated plastic shaping layer, because a little less than the cohesive force between plastic shaping layer and the paper pulp moulded articles, during paper pulp moulded articles concavo-convex serious, in the time of as being squeezed into disc shaped container etc. deeply, it is difficult forming the plastic shaping layer.
In addition, in the said method, the method for coating agent on paper pulp moulded articles is for washy food or contain the food of oil content, being only limited to does not have the packing of leaking, and moisture or oil content see through the situation that coating is seeped into the paper pulp moulded articles outside and also happen occasionally.
Particularly at the used for packing foods container, when for example using such paper pulp moulded articles in the packing of processed food etc., also may be by the food of micro-wave oven or oven heat packing, but because the poor heat resistance of described existing paper pulp moulded articles, so can not use micro-wave oven or baking box directly these food to be nursed one's health.
So, the objective of the invention is to solve above-mentioned shortcoming of the prior art, the paper pulp moulded articles laminated film is provided, and its formability is promptly to the attaching excellence on paper pulp moulded articles surface, and it is good with the caking property of paper pulp moulded articles, have resistance to water and oil resistivity, the soaking into etc. of the moisture that contains in the packing materials such as food that can filling not take place, oil content, and have hear resistance, can directly use micro-wave oven or baking box to nurse one's health, be suitable as the paper pulp moulded articles of the packing of processed food etc.
In order to achieve the above object, paper pulp moulded articles of the present invention is at the both sides in intermediate layer laminating surface layer and laminating layer with the feature of laminated film, described superficial layer is made of polyolefin resin or polyester, described laminating layer is attached on the paper pulp moulded articles, constitute by containing polyolefin resin or the polyester resin that comonomer is at least the ethylene copolymer of 5 weight %, described intermediate layer is made of polyolefin resin.
Described superficial layer can be formed by the polypropylene film that does not stretch, and is perhaps formed by amorphous PETG that do not stretch.
In addition, the polyolefin resin that forms described laminating layer can be that the comonomer content of EVA resin, EMMA, EMAA resin etc. equals 5 weight % or greater than the ethylene copolymer of 5 weight %, perhaps the mixture by polyethylene and ethylene copolymer forms, and then, also can form laminating layer by the film of ethylene copolymer and poly coextrusion.
And described superficial layer and/or described laminating layer can be formed by biodegradable resin material.
In addition, described laminating layer is preferably formed by the film of surface tension more than or equal to 40mN/m.
The specific embodiment
Below embodiments of the present invention are described.
Paper pulp moulded articles of the present invention has the three-decker in superficial layer, laminating layer and intermediate layer at least with laminated film, described superficial layer is attached to the outside of paper pulp moulded articles, become the part that directly contacts with packed article during packaged food etc., described laminating layer is as the attaching face that is attached on the paper pulp moulded articles, described intermediate layer between described superficial layer and laminating layer, and lamination both.
(superficial layer)
Superficial layer in the layer of formation laminated film of the present invention is when this laminated film is attached to paper pulp moulded articles, form contact with packed article such as food layer, it has in the packed article as its material requirements, for example in the food, the moisture that contains or the patience of oil content, and the hear resistance when having etc., and when being attached to the paper pulp moulded articles surface, according to the excellent mouldability of paper pulp moulded articles surface configuration distortion to heating and regulating.
The superficial layer of laminated film of the present invention is formed by polyolefin resin or polyester, and this superficial layer is formed by polyolefin resin film or polyester film in the present embodiment.
The polyolefin resin that uses in this superficial layer can use polyethylene, EVA resin, EVOH resin, polypropylene, poly-1-butylene, polybutene, methylpentene resin, polybutadiene etc., can use known various resin materials as polyolefin resin, the preferred polypropylene film that uses more preferably uses the polypropylene film that does not stretch.
In addition, when the material of this superficial layer is polyester, can use polyethylene terephthalate (PET), polybutylene terephthalate (PBT) (PBT), poly terephthalic acid 1, known various polyester such as various unsaturated polyester resins such as 4 cyclohexyl dimethyl esters (PCT), poly-naphthoic acid glycol ester saturated polyester resins such as (PEN), alkyd resins, the preferred PETG that uses more preferably uses amorphous PETG film that do not stretch.
In addition, when this superficial layer uses polyester, also can use the so-called biodegradable plastic that constitutes as the aliphatic polyester of representative with for example PLA etc., select the material of these resins as superficial layer, biodegradable when discarded the grade, thereby minimizing environmental pressure, while polylactic acid film hot strength and modulus of elasticity height in various Biodegradable films, hear resistance, the transparency, the glossiness excellence, character with similar biaxial stretch-formed polypropylene film (OPP) or PETG (PET), can be preferably as the material of superficial layer in the laminated film of the present invention.
(laminating layer)
Described laminating layer is when to be the present invention with laminated film be stacked in the integration of paper pulp moulded articles surface, be attached to the layer on paper pulp moulded articles surface, require it that paper pulp moulded articles surface is had strong cohesive force, even and also can keep the character of this cohesive force when having by heating such as heating and regulatings.
In the laminated film of the present invention, this adhesion coating forms by containing polyolefin resin or the polyester resin more than or equal to the ethylene copolymer of 5 weight % of comonomer content at least, also can select the polyolefin resin self as the raw material of this laminating layer is the ethylene copolymer of comonomer content more than or equal to 5 weight %, in addition, also the resin that interpolation ethylene copolymer in the polyolefin resin obtains can be used as laminating layer.
When polyolefin resin self is ethylene copolymer, when for example using EVA resin, ethene-methylmethacrylate copolymer (EMMA), ethene-methacrylic acid copolymer resins such as (EMAA) as tack coat, these resins can use as laminating layer separately.
In addition, when selecting to add in the polyolefin resin ethylene copolymer as the material of laminating layer, the ethylene copolymer that adds can use polyolefin resin or any resin in addition, for example above-mentioned EVA resin, EMMA resin, EMAA resin, also has polyethylene (PE), EVOH resin, ethene-acrylic copolymer (EAA), ethene-ethyl acrylate copolymer (EEA), ethene-methyl acrylate copolymer known various resins such as (EMA).
Like this, when adding the ethylene copolymer use in the polyolefin resin, preferably use polyethylene (PE) as basic polyolefin resin, the resin manufacture film that uses both mixing to obtain, or by coextrusion polyethylene and ethylene copolymer manufacturing film, and use these films as laminating layer.
The surface tension of preferred this laminating layer has for example increased described capillary film by sided corona treatment more than or equal to 40mN/m by lamination, and the binding face that perhaps carries out the sided corona treatment laminating layer behind lamination is processed into described surface tension.
In addition, when using polyester based resin as laminating layer, can use with to the same polyester of example in the explanation of superficial layer.In addition, during laminating layer during biodegradable resin material, also can use with above-mentioned explanation to superficial layer in the same material of resin material that uses.
(intermediate layer)
This intermediate layer is formed by polyolefin resin for the described superficial layer of lamination and laminating layer and be located between the two.Preferably use low density polyethylene (LDPE) (LDPE) as this polyolefin resin.
(manufacture method)
Can be by as the extruding layer platen press to the lamination of each layer of above-mentioned explanation, constituting the film of superficial layer and constitute the film of laminating layer can combination under the resin effect in the intermediate layer of molten condition, by the extruding coating method, the resin that lamination on the film of any one deck forms other layers can formed, in addition, as long as can form described each layer, can use known various laminating methods.
Prepare the described superficial layer of filminess and the resin of laminating layer, utilize the extruding layer platen press to carry out in the present embodiment of lamination, the face that combines with the intermediate layer at these films is coated with tackifier coating etc. in advance, and this tackifier coating face combines with described intermediate layer.At this moment, intermediate layer and superficial layer, or accompany tackifier coating between intermediate layer and the laminating layer.
Embodiment
Below, the preferred embodiment of the invention is described.But paper pulp moulded articles container molding of the present invention is not subjected to the qualification of following examples with laminated film, can do various variations in the object of the invention scope.
(embodiment 1)
In the present embodiment, superficial layer uses amorphous state PETG (PET) film (east and Chemical Co., Ltd's system, thick 30 μ m) that do not stretch, the intermediate layer that the one side of this superficial layer is formed by low density polyethylene (LDPE) (LDPE) (Sumitomo Chemical Company Ltd system ス ミ カ セ Application L705,15 μ m) by the tackifier coating setting is accompanying the film (Sumitomo Chemical Company Ltd makes ボ Application ダ イ Application SC-6,30 μ m) that utilizes extruding layer platen press lamination to form as the hybrid resin of the polyethylene of laminating layer and ethylene copolymer under the condition in this intermediate layer.
(embodiment 2)
The laminating layer that uses coextrusion ethylene copolymer and poly film (the eastern Cao-system メ of Co., Ltd. Le セ Application MX 302,30 μ m) to replace embodiment 1 to use.Other are identical with embodiment 1.
(embodiment 3)
The content that uses the methyl methacrylate of comonomer is the laminating layer that 18% ethylene copolymer (ア of Sumitomo Chemical Company Ltd Network リ Off ト WH 303,25 μ m) replaces embodiment 1 to use.Other are identical with embodiment 1.
(embodiment 4)
The superficial layer that uses un-stretched polypropylene film (clear and the system ア ロ マ-U of electrical plastics goods Co., Ltd., 30 μ m) to replace embodiment 1 to use.Other are identical with embodiment 1.
(embodiment 5)
The superficial layer that uses un-stretched polypropylene film (clear and the system ア ロ マ-U of Electricity worker's plastic products Co., Ltd., 30 μ m) to replace embodiment 2 to use.Other are identical with embodiment 2.
(embodiment 6)
The superficial layer that uses polylactic acid film (ユ ニ チ カ system テ ラ マ Star Network, 30 μ m) to replace embodiment 1 to use.Other are identical with embodiment 1.
(embodiment 7)
To constituting with embodiment 1 and sided corona treatment is carried out on the adhesion coating surface of the laminated film that laminating method obtains, the making surface tension is the laminated film of 42mN/m.
(paper pulp moulded articles and laminated film are fitted and are tested)
Test with the applying of paper pulp moulded articles carrying out as above-mentioned made laminated film.Applying method adopts the heated lamination film, draws from the paper pulp moulded articles side draught, is attached to the so-called vacuum forming on the described paper pulp moulded articles.
Determine in this test laminated film formability (to the adaptability of paper pulp moulded articles shape) and with the adherence of paper pulp moulded articles.Evaluation criterion is as follows.
(heat resistant tests of the product of fitting)
Carry out heat resistant test as the applying product of above-mentioned made laminated film and paper pulp moulded articles.Test method is to pack into to the conditioned macaroni of content (containing oil content), carries out micro-wave oven test (temperature that content reaches is 120 ℃) and baking box test (temperature that content reaches is 200 ℃), confirms the laminated film adaptability state that attaches.
(water resistant tests of the product of fitting)
Applying product to as above made laminated film and paper pulp moulded articles carry out water resistant test.Test method is the water of packing in the content, confirms whether the paper pulp moulded articles that normal temperature was placed 24 hours has water seepage.
The result of evaluation result and following comparative example together is shown in table 1.
Evaluation criterion
◎ adaptability is good
There is subproblem in △
* be not suitable for
(comparative example 1)
In this comparative example, use un-stretched polypropylene film,,, form adhesion coating with the paper pulp moulded articles composition surface with extruding coating process lamination ldpe resin by the tackifier coating agent as superficial layer.
(comparative example 2)
In this comparative example, use the straight-chain low density polyethylene film as superficial layer, same by the tackifier coating agent with comparative example 1, utilize extruding coating method lamination ldpe resin, form adhesion coating with the paper pulp moulded articles composition surface.
The applying experimental result of table 1 and paper pulp moulded articles
| The mouldability of laminated film | Adherence with paper pulp moulded articles | |
| Embodiment 1 | ◎ | ◎ |
| Embodiment 2 | ◎ | ◎ |
| Embodiment 3 | ◎ | ◎ |
| Embodiment 4 | ◎ | ◎ |
| Embodiment 5 | ◎ | ◎ |
| Embodiment 6 | ◎ | ◎ |
| Embodiment 7 | ◎ | ◎ |
| Comparative example 1 | △ | × |
| Comparative example 2 | × | × |
Heat-resisting and the water resistant test of table 2
| The micro-wave oven test | The baking box test | Water resistant test | |
| Embodiment 1 | ◎ | ◎ | ◎ |
| Embodiment 2 | ◎ | ◎ | ◎ |
| Embodiment 3 | ◎ | ◎ | ◎ |
| Embodiment 4 | ◎ | × | ◎ |
| Embodiment 5 | ◎ | × | ◎ |
| Embodiment 6 | ◎ | × | ◎ |
| Embodiment 7 | ◎ | ◎ | ◎ |
From the result of table 1 as can be seen, comparative example 1 and comparative example 2 all exist formability, with the problem of the adherence aspect of paper pulp moulded articles, but any formability, all fine with the adherence of paper pulp moulded articles of embodiment 1～7 is suitable as the surface-coated of paper pulp moulded articles with laminated film.
From the result of table 2 as can be seen, even embodiment 1～3 and embodiment 7 also can use 200 ℃ temperature, the hear resistance of embodiment 4～6 can arrive 100 ℃.
In the water resistant test, embodiment 1～7 does not pinpoint the problems.
In comparative example 1 and the comparative example 2, the stickiness problem of existence and paper pulp moulded articles can not be implemented heat-resisting and water resistant test.
The mouldability of paper pulp moulded articles usefulness laminated film of the present invention and good with the adherence of paper pulp moulded articles, select the material of use, attach the problem of soaking into that paper pulp moulded articles container that this laminated film obtains does not exist content contained humidity or oil content, in addition, its hear resistance is also fine, can or use in baking box by the micro-wave oven heating.
Claims (5)
1. the paper pulp moulded articles laminated film is characterized by, and this paper pulp moulded articles constitutes with laminated film: superficial layer, and this superficial layer is made of polyvinyl resin or acrylic resin or polyester; Be attached to the laminating layer on the paper pulp moulded articles, this laminating layer is made of separately the ethylene-methyl methacrylate methyl terpolymer of the methyl methacrylate that contains 5 weight % at least, or constitute, and has surface tension more than or equal to 40mN/m by the vistanex that contains the ethylene-methyl methacrylate methyl terpolymer; And for the described superficial layer of lamination and laminating layer and the intermediate layer that is provided with between described superficial layer and laminating layer, this intermediate layer is made of vistanex.
2. paper pulp moulded articles laminated film as claimed in claim 1 is characterized by, and described superficial layer is formed by the polypropylene film that does not stretch.
3. paper pulp moulded articles laminated film as claimed in claim 1 is characterized by, and described superficial layer is formed by the amorphous state PETG that do not stretch.
4. as each described paper pulp moulded articles laminated film of claim 1～3, it is characterized by, described laminating layer is formed by the mixture of polyethylene and ethylene-methyl methacrylate methyl terpolymer.
5. as each described paper pulp moulded articles laminated film of claim 1～3, it is characterized by, described laminating layer forms by coextrusion ethylene-methyl methacrylate methyl terpolymer and poly film.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP375159/2002 | 2002-12-25 | ||
| JP2002375159A JP4542309B2 (en) | 2002-12-25 | 2002-12-25 | Laminate film for pulp mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1515740A CN1515740A (en) | 2004-07-28 |
| CN100522600C true CN100522600C (en) | 2009-08-05 |
Family
ID=32812978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101130644A Expired - Fee Related CN100522600C (en) | 2002-12-25 | 2003-12-25 | Laminated film for paper pulp moulded goods |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4542309B2 (en) |
| CN (1) | CN100522600C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105882072A (en) * | 2014-12-25 | 2016-08-24 | 亨达科技(天津)有限公司 | Reusable composite microwave heating packaging film |
| CN109923262B (en) * | 2016-10-03 | 2022-05-27 | 普乐模塑纤维技术私人有限责任公司 | Biodegradable and compostable food packaging unit from molded pulp material and method for manufacturing such food packaging unit |
| WO2020206271A1 (en) * | 2019-04-04 | 2020-10-08 | Eco-Products, Pbc | Molded article made by a pulp composition providing grease and water-resistant properties |
| CN112026319A (en) * | 2020-08-07 | 2020-12-04 | 南京师范大学 | Barrier laminate for improved hermeticity in lunch boxes and method of making same |
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| CN1081963A (en) * | 1989-04-17 | 1994-02-16 | 三井石油化学工业株式会社 | Laminated film or sheet material and the box-shaped vessel that makes thus |
| EP0602006A1 (en) * | 1989-04-17 | 1994-06-15 | Mitsui Petrochemical Industries, Ltd. | Laminated film or sheet and box-shaped vessel prepared therefrom |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1515740A (en) | 2004-07-28 |
| JP4542309B2 (en) | 2010-09-15 |
| JP2004202874A (en) | 2004-07-22 |
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