CN205553460U - Separating nature of high resistant polystyrene composite sheet - Google Patents
Separating nature of high resistant polystyrene composite sheet Download PDFInfo
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- CN205553460U CN205553460U CN201521139843.6U CN201521139843U CN205553460U CN 205553460 U CN205553460 U CN 205553460U CN 201521139843 U CN201521139843 U CN 201521139843U CN 205553460 U CN205553460 U CN 205553460U
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Abstract
The utility model relates to a separating nature of high resistant polystyrene composite sheet, it includes that high impact polystyrene layer and high resistant separate hot in nature easy dyestripping layer, the high impact polystyrene layer separates hot in nature easy dyestripping layer with the high resistant and is in the same place through therebetween adhesive phase is compound. The utility model discloses still relate to one kind the packing product, its include by the utility model discloses a packaging container that composite sheet made.
Description
Technical field
The utility model relates to a kind of composite sheet.Specifically, the utility model relates to a kind of composite sheet including high impact polystyrene layer and high barrier heat-sealing easily tore film layer.
Background technology
Using plastic sheeting to pack product in an increasingly wide range of applications, composite plastic flexible package is the most quite favored, and has been widely used for the fields such as food, medicine, chemical industry, and these products all bring great convenience to people's life.For food, due to its healthy closely bound up, therefore with people, for preventing food pollution from going bad, also need to packaging material and necessary barrier and overall tightness are provided, to meet the physical strength of shelf life requirements, and stand any situation that transportation may face.
The Trend of High Obstructive Materials Ordnance Engineering College that at present field of food is used generally is molded by coextrusion, such as with high impact polystyrene (HIPS) typically requiring and be co-extruded with the ethylene-vinyl alcohol copolymer (EVOH) with good barrier by HIPS for making the formed sheet of food containers as base material.But, barrier property is caused to decline owing to EVOH easily absorbs water, the most generally being not intended to EVOH and be present in the surface of composite sheet, this causes at least needing five-layer co-squeezing (such as including two HIPS superficial layers, two articulamentums and the evoh layer of centre) to obtain desired composite sheet.Certain health risk can be brought when HIPS is as superficial layer and direct food contact.And, the various raw-material classification that the composite sheet obtained by coextrusion mold is difficult to used in it is reclaimed, and spillage of material is big, is unfavorable for environmental protection.
Accordingly, it would be desirable to a kind of easily manufactured, excellent performance and/or be prone to carries out the high barrier polystyrene composite sheet that classification is reclaimed to raw material.
Utility model content
The utility model relates to a kind of composite sheet, and it includes that high impact polystyrene layer and high barrier heat-sealing easily tore film layer, described high impact polystyrene layer and high barrier heat-sealing easily tore film layer are combined with each other by therebetween adhesive phase.
The utility model is combined with each other by therebetween adhesive phase by high impact polystyrene layer and high barrier are sealed easily tore film layer, it is provided that a kind of polystyrene composite sheet that can be carried out that manufacture and that have excellence high barrier, heat sealability and easy-to-rupture by dry-lamination process.And, the composite sheet carrying out being combined by adhesive phase can carry out raw-material classification easily and reclaim.
Accompanying drawing explanation
By detailed description below and accompanying drawing, the utility model is carried out detailed explanation, better understood when the utility model to those skilled in the art, but it is not intended that limit scope of the present utility model by any way.
Fig. 1 illustrates the composite sheet according to an embodiment of the present utility model.
Detailed description of the invention
The utility model offer implementation below:
1. a composite sheet, it includes that high impact polystyrene layer and high barrier heat-sealing easily tore film layer, described high impact polystyrene layer and high barrier heat-sealing easily tore film layer are combined with each other by therebetween adhesive phase.
2. according to the composite sheet of item 1, wherein said high barrier heat-sealing easily tore film layer comprises any one in following material or is made up of any one in following material: ethylene-vinyl alcohol copolymer, vinyl-vinyl acetate copolymer, Vingon, polyamine, polyamide, polyethylene terephthalate, polyethylene, polypropylene and arbitrarily copolymer or combination thereof.
3., according to the composite sheet of item 1 or 2, wherein said high barrier heat-sealing easily tore film layer comprises vinyl-vinyl acetate copolymer sublayer, ethylene-vinyl alcohol copolymer sublayer and polyethylene sublayer, and described adhesive phase is adjacent with described polyethylene sublayer.
4., according to the composite sheet any one of item 1-3, the thickness of wherein said high impact polystyrene layer is 0.1-3mm.
5., according to the composite sheet of item 4, the thickness of wherein said high impact polystyrene layer is 0.2-1mm.
6., according to the composite sheet any one of item 1-5, the thickness of wherein said high barrier heat-sealing easily tore film layer is 1-250 μm.
7., according to the composite sheet of item 6, the thickness of wherein said high barrier heat-sealing easily tore film layer is 5-100 μm.
8., according to the composite sheet any one of item 1-7, the thickness of wherein said adhesive is 0.1-8 μm.
9., according to the composite sheet of item 8, the thickness of wherein said adhesive is 0.5-5 μm.
10. a packaging product, it includes by the packing container made according to the composite sheet any one of item 1-9.
11. according to the packaging product of item 10, and wherein said packing container is used for containing or accommodate Yoghourt, milk, pudding, cheese, jelly, chocolate, meat products, instant food or cooked product.
High barrier heat-sealing easily tore film layer
According to the utility model, the barrier of packaging material, broadly, a kind of material can be defined as and there is the strongest ability stoping another kind of material to enter, no matter another kind of material is gas, steam, smell, or strange taste or fragrance.From the point of view of narrow sense, the barrier of packaging material includes oxygen-barrier property and water vapor barrier property.Oxygen-barrier property plays a key effect especially with fat, the effective period of food quality of protein for food, this is because the compositions such as fat in food are susceptible to oxidation, rotten under oxygen existence condition, so as food such as edible oil, snacks, meat, moon cake etc. that fat content is high must use the packaging material of certain oxygen-barrier property, in the guarantee shelf-life, food does not goes bad.
According to the utility model, the heat sealability of packaging material refer to described material after being heated to molten condition, the heat bonding performance that it is had with itself or other materials.This heat bonding performance makes described packaging material easily to weld and/or bag.
According to the utility model, the easy-to-rupture of packaging material, in narrow sense from the point of view of, refer to need not the performance that otch just can be torn by hand.The material commonly referred to structural type possessing this easy-to-rupture easily tears material, and its easy-to-rupture depends on its internal structural strength.Such as, by the polyolefin of two kind different structures is blended, form sea, mutual exclusive island isolating construction, so that the peel strength at interface is less than the peel strength of polyolefine material itself so that destroy from material interface when tear or stripping.
Need to be provided simultaneously with above-mentioned barrier, heat sealability and easy-to-rupture according to high barrier of the present utility model heat-sealing easily tore film layer.The height of various degree of performance can be determined according to practical use by those skilled in the art.
According in an embodiment of the present utility model, described high barrier heat-sealing easily tore film layer comprises any one in following material or is made up of any one in following material: ethylene-vinyl alcohol copolymer, vinyl-vinyl acetate copolymer, Vingon, polyamine, polyamide, polyethylene terephthalate, polyethylene, polypropylene and arbitrarily copolymer or combination thereof.
According in an embodiment of the present utility model, described high barrier heat-sealing easily tore film layer comprises vinyl-vinyl acetate copolymer sublayer, ethylene-vinyl alcohol copolymer sublayer and polyethylene sublayer.In this case, when described high barrier heat-sealing easily tore film layer forms composite sheet with high impact polystyrene layer by therebetween adhesive phase, described adhesive phase can be adjacent with described polyethylene sublayer.
Composite sheet
The utility model provides a kind of composite sheet, and it includes that high impact polystyrene layer and high barrier heat-sealing easily tore film layer, described high impact polystyrene layer and high barrier heat-sealing easily tore film layer are combined with each other by therebetween adhesive phase.
According to the utility model, described high impact polystyrene layer is the layer formed as main component using high impact polystyrene, the most described high impact polystyrene constitutes more than the 60wt% of described high impact polystyrene layer, more preferably more than 80wt%, even more preferably more than 90wt%, more than 95wt% or more than 99wt%.According in an embodiment of the present utility model, described high impact polystyrene layer is made up of the high impact polystyrene of 100wt%.
In this article, term " high impact polystyrene " refers to styrene and poly-butyl rubber (such as butadiene rubber) as raw material, uses the MPS that body graft polymerization method prepares.Preferably, described high impact polystyrene contains 2-30wt%, the rubber constituent of preferred 3-25wt%, more preferably 5-15wt%.
The thickness of described high impact polystyrene layer is not particularly limited.In some embodiments, the thickness of described high impact polystyrene layer is 0.1-3mm, such as 0.2-1mm.Preferably, the thickness of described high impact polystyrene layer can be at least 0.2mm, 0.5mm, 0.7mm, 0.9mm or 1.1mm.The thickness of described high impact polystyrene layer can be at most 2.9mm, 2.5mm, 2.2mm, 1.8mm, 1.6mm or 1.3mm.Those skilled in the art can be according to actual conditions and it needs to be determined that the thickness of described high impact polystyrene layer.
The thickness of described high barrier heat-sealing easily tore film layer is not particularly limited.In some embodiments, the thickness of described high barrier heat-sealing easily tore film layer is 1-250 μm, such as 5-100 μm.Preferably, the thickness of described high barrier heat-sealing easily tore film layer can be at least 2 μm, 5 μm, 10 μm, 20 μm or 50 μm.The thickness of described high barrier heat-sealing easily tore film layer can be at most 220 μm, 200 μm, 180 μm, 150 μm or 100 μm.Those skilled in the art can be according to actual conditions and it needs to be determined that the thickness of described high barrier heat-sealing easily tore film layer.
In embodiments more of the present utility model, the thickness of described adhesive is 0.1-8 μm, such as 0.5-5 μm.Preferably, the thickness of described adhesive can be at least 0.2 μm, 0.5 μm, 1 μm, 2 μm or 2.5 μm.The thickness of described adhesive can be at most 7 μm, 6 μm, 5 μm, 4 μm or 3 μm.
The person skilled in the art will easily understand, each in above-described high impact polystyrene layer and high barrier heat-sealing easily tore film layer can be single layer structure or sandwich construction.And, those skilled in the art are it is also understood that can also include other layer one or more as required according to composite sheet of the present utility model.
In this article, the number range being previously mentioned should be understood to include with unit as increment and include all of value of described lower value and described high value from lower value to high value.nullSuch as，The gross thickness of described composite sheet can be 1 micron to 3500 microns，Contain all values in the range of this as individually value，Or the subrange constituted as lower limit or the upper limit，The thickness such as including described laminate film is 5、8、15、20、25、30、……120、140、220、280、300、350、400、450、800、1200、1400、1900、2100、2300、2450、The all situations of 3300 microns，Also include respectively with these values as lower limit or the upper limit and the subrange that constituted，Such as 22 to 88、56 to 99、155 to 170、197 to 200、268 to 390、420 to 500、800 to 1050、1150 to 1420 microns etc..
Understanding the utility model for convenience, Fig. 1 shows the structure of the composite sheet according to an embodiment of the present utility model.
In the embodiment depicted in fig. 1, composite sheet 10 includes that high impact polystyrene layer 104 and high barrier heat-sealing easily tore film layer 106, wherein said high impact polystyrene layer 104 and high barrier heat-sealing easily tore film layer 106 are combined with each other by therebetween adhesive phase 102.
Can be combined by dry-lamination process well-known to those skilled in the art according to composite sheet of the present utility model, concrete steps such as can include using dry compound machine to be coated on by adhesive on the surface of high impact polystyrene layer and/or high barrier heat-sealing easily tore film layer, and then paste two surfaces and heat curing.
Packaging product
Can be made into variously-shaped according to composite sheet of the present utility model, and may be used for various uses, it is particularly possible to be used for packing product.
Therefore, the utility model also provides for a kind of packaging product, and it includes by the packing container made according to composite sheet of the present utility model.
According in embodiments more of the present utility model, described packing container is used for containing or accommodate Yoghourt, milk, pudding, cheese, jelly, chocolate, meat products, instant food or cooked product.
Can be self heat-sealing according to packing container of the present utility model, it is also possible to seal together with other materials.Such as, in the case of described composite sheet is made Yogurt container, the plastics epiphragma with heat sealability can be used to form heat-sealing with the high barrier heat-sealing easily tore film layer of this Yogurt container, and wherein Yoghourt directly can contact with the hot sealing layer of this high barrier heat-sealing easily tore film layer and this plastics epiphragma.When containing solid product such as cheese, the high barrier heat-sealing easily tore film layer of described formed sheet can be made self to seal by the formed sheet containing solid product carries out doubling.
Embodiment
Below in conjunction with embodiment, some detailed description of the invention of the present utility model is explained, so that those skilled in the art are more clearly understood that the technical solution of the utility model and advantage thereof, but formed never in any form restriction of the present utility model.
The preparation of embodiment 1 composite sheet
Preparing composite sheet according to the formula in table 1, (coating dry measure is 4.0-4.5g/m to use Taiwan three summer jobs DL-S1300 type dry compound machine that as master, high impact polystyrene layer is unreeled material coating adhesive for polyurethane2), then in turn through 40 DEG C, 60 DEG C, solvent dried by 70 DEG C of three sections of baking ovens, being combined with each other by the composite roll of 0.45MPa pressure, 15-18 DEG C with high barrier heat-sealing easily tore film layer, curing 72 hours, obtain required composite sheet the most naturally.
Table 1
Can obtain conveniently by dry-lamination process according to the composite sheet that embodiment 1 of the present utility model prepares, therefore production chains is bigger.High impact polystyrene layer and high barrier heat-sealing easily tore film layer all can the most relatively easily obtain, and can be combined after being cut out according to actual needs, carrying out co-extrusion without by complicated coextrusion production line, therefore spillage of material is little, and production efficiency is high.Additionally, due to polyurethane binder can easily destroy and clear up, the classification that therefore can realize sealing easily tore film layer for high impact polystyrene layer and high barrier is reclaimed, thus improves raw-material utilization rate, is more favorable for environmental protection.
Although having been described in detail the utility model according to some embodiment of the present utility model, but it can be revised in spirit and scope of the present utility model.Therefore the application is intended to use General Principle disclosed herein to carry out covering power field technique personnel to be changed according to the most specifically described embodiment and all equal or similar scheme that obtains.
Claims (11)
1. a composite sheet, it includes that high impact polystyrene layer and high barrier heat-sealing easily tore film layer, described high impact polystyrene layer and high barrier heat-sealing easily tore film layer are combined with each other by therebetween adhesive phase.
Composite sheet the most according to claim 1, wherein said high barrier heat-sealing easily tore film layer comprises any one in following material or is made up of any one in following material: ethylene-vinyl alcohol copolymer, vinyl-vinyl acetate copolymer, Vingon, polyamine, polyamide, polyethylene terephthalate, polyethylene, polypropylene and arbitrarily copolymer or combination thereof.
Composite sheet the most according to claim 1, wherein said high barrier heat-sealing easily tore film layer comprises vinyl-vinyl acetate copolymer sublayer, ethylene-vinyl alcohol copolymer sublayer and polyethylene sublayer, and described adhesive phase is adjacent with described polyethylene sublayer.
4., according to the composite sheet according to any one of claim 1-3, the thickness of wherein said high impact polystyrene layer is 0.1-3mm.
Composite sheet the most according to claim 4, the thickness of wherein said high impact polystyrene layer is 0.2-1mm.
6., according to the composite sheet according to any one of claim 1-3, the thickness of wherein said high barrier heat-sealing easily tore film layer is 1-250 μm.
Composite sheet the most according to claim 6, the thickness of wherein said high barrier heat-sealing easily tore film layer is 5-100 μm.
8., according to the composite sheet according to any one of claim 1-3, the thickness of wherein said adhesive is 0.1-8 μm.
Composite sheet the most according to claim 8, the thickness of wherein said adhesive is 0.5-5 μm.
10. a packaging product, it includes by the packing container made according to the composite sheet according to any one of claim 1-9.
11. packaging products according to claim 10, wherein said packing container is used for containing or accommodate Yoghourt, milk, pudding, cheese, jelly, chocolate, meat products, instant food or cooked product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521139843.6U CN205553460U (en) | 2015-12-30 | 2015-12-30 | Separating nature of high resistant polystyrene composite sheet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521139843.6U CN205553460U (en) | 2015-12-30 | 2015-12-30 | Separating nature of high resistant polystyrene composite sheet |
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| CN205553460U true CN205553460U (en) | 2016-09-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108750370A (en) * | 2018-06-19 | 2018-11-06 | 东莞奇妙包装有限公司 | A kind of flexible packaging film, a kind of soft packaging bag and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108750370A (en) * | 2018-06-19 | 2018-11-06 | 东莞奇妙包装有限公司 | A kind of flexible packaging film, a kind of soft packaging bag and preparation method thereof |
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