CN1359789A - Composite material for package of food and its preparing process - Google Patents
Composite material for package of food and its preparing process Download PDFInfo
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- CN1359789A CN1359789A CN 00111891 CN00111891A CN1359789A CN 1359789 A CN1359789 A CN 1359789A CN 00111891 CN00111891 CN 00111891 CN 00111891 A CN00111891 A CN 00111891A CN 1359789 A CN1359789 A CN 1359789A
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Abstract
A composite material for wrapping food is composed of core layer and surface layers. Said surface layer is the copolymer of polyhydroxy butylester and polyhydroxy pentylester and is applied onto core layer by extruding or coating method. Its advantages are high folding tolerance, water-proof nature, air tightness and thermosealing, and easy degradation.
Description
The invention belongs to the packaging for foodstuff field, relate to a kind of composite material for package of food and production method thereof.
The disclosed Chinese patent 1055506A in 1991 (application number is 90105802.5) has introduced a kind of three-layer plastic compound film.But with the difficult liquid food packing container that is manufactured with certain collapsed shape of this laminated film, and this laminated film is difficult for degraded under field conditions (factors), is unfavorable for environmental protection.
The objective of the invention is to develop a kind of composite material for package of food and production method thereof at above-mentioned deficiency.
Embodiment of the present invention are: a kind of composite material for package of food, comprise sandwich layer and skin, and on sandwich layer, be coated with skin, this skin is poly-hydroxyl fourth fat and poly-hydroxyl penta resin copolymer.
The production method of above-mentioned composite material for package of food: described production method is extrusion molding or coating process, the production technology of extrusion molding is will gather hydroxyl fourth fat and poly-hydroxyl penta resin copolymer is expressed on the sandwich layer with extruder, makes poly-hydroxyl fourth fat and poly-hydroxyl penta resin copolymer be applied to sandwich layer with the form of thin layer; The production technology of coating process is to use coating device, makes poly-hydroxyl fourth fat and poly-hydroxyl penta resin copolymer be applied to sandwich layer with the form of thin layer.
Advantage of the present invention: the one, described composite material for package of food can be folded into corresponding package shape according to the packing needs of liquid food; The 2nd, the skin of described composite material for package of food is poly-hydroxyl fourth fat and poly-hydroxyl penta resin copolymer layer, and therefore, it is degraded more under field conditions (factors); The 3rd, described composite material for package of food has waterproof, trapping and heat sealability preferably.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of square liquid food packing box.
Fig. 3 is the structural representation of roof shape liquid food packing box.
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, the present invention includes sandwich layer 1 and two layers of skin 2, outer 2 are poly-hydroxyl fourth fat and poly-hydroxyl penta resin copolymer layer, and these two layers of skins 2 are applied respectively in the upside and the downside of sandwich layer 1.Sandwich layer 1 is a ply of paper, and the used material of this ply of paper mainly is string or synthetic fibers.
The production method of above-mentioned composite material for package of food is an extrusion molding, the production technology of extrusion molding is will gather hydroxyl fourth fat and poly-hydroxyl penta resin copolymer is expressed into sandwich layer 1 with extruder, and poly-hydroxyl fourth fat and poly-hydroxyl penta resin copolymer are applied on the sandwich layer 1 with thin layer form.
The production method of above-mentioned composite material for package of food also can be coating process, and the production technology of coating process is to use coating device, and poly-hydroxyl fourth fat and poly-hydroxyl penta resin copolymer are applied on the sandwich layer 1 with the form of thin layer.
The skin 2 of above-mentioned composite material for package of food can have only one deck, and this one deck outer 2 is applied in a side of sandwich layer 1.
Last 2 sandwich layers 1 of stating composite material for package of food can be plastic layer, and the used material of this plastic layer is mainly TPO.
The sandwich layer 1 of above-mentioned composite material for package of food can be aluminium foil layer.
The sandwich layer 1 of above-mentioned composite material for package of food can be made up of ply of paper and plastic layer, and the used material of ply of paper mainly is string or synthetic fibers, and the used material of plastic layer mainly is a TPO.
The sandwich layer 1 of above-mentioned composite material for package of food can be made up of ply of paper and aluminium foil layer, and the used material of ply of paper mainly is string or synthetic fibers.
The sandwich layer 1 of above-mentioned composite material for package of food can be by being made up of aluminium foil layer and plastic layer, and the used material of plastic layer mainly is a TPO.
Poly-hydroxyl fourth fat of the present invention and poly-hydroxyl penta resin copolymer layer are the one decks that copolymer constituted by poly-hydroxyl fourth fat and poly-hydroxyl penta fat.In this layer, contain 60% poly-hydroxyl fourth fat and 40% poly-hydroxyl penta fat; Or poly-hydroxyl penta fat of 80% poly-hydroxyl fourth fat and 20%; Or poly-hydroxyl penta fat of 5% poly-hydroxyl fourth fat and 95%.
Composite material for package of food of the present invention can be made square liquid food packing box as shown in Figure 2, also can make roof shape liquid food packing box as shown in Figure 3, or the liquid food packing container of other shape.
Claims (11)
1, a kind of composite material for package of food comprises sandwich layer and skin, it is characterized in that being coated with on sandwich layer skin, and this skin is poly-hydroxyl fourth fat and poly-hydroxyl penta resin copolymer layer.
2, a kind of composite material for package of food according to claim 1 is characterized in that skin is two layers, and these two layers outer applied respectively in the upside and the downside of sandwich layer.
3, a kind of composite material for package of food according to claim 1 is characterized in that containing the poly-hydroxyl fourth fat of 60%-95% and poly-hydroxyl penta fat of 5%-40% in poly-hydroxyl fourth fat and poly-hydroxyl penta resin copolymer layer.
4, a kind of composite material for package of food according to claim 1 is characterized in that sandwich layer is a ply of paper, and the used material of this ply of paper mainly is string or synthetic fibers.
5, a kind of composite material for package of food according to claim 1 is characterized in that skin can be one deck, and this one deck is outer applied in a side of sandwich layer.
6, a kind of composite material for package of food according to claim 1 is characterized in that sandwich layer can be plastic layer, and the used material of this plastic layer is mainly TPO.
7, a kind of composite material for package of food according to claim 1 is characterized in that sandwich layer can be aluminium foil layer.
8, a kind of composite material for package of food according to claim 1 is characterized in that sandwich layer can be made up of ply of paper and plastic layer, and the used material of ply of paper mainly is string or synthetic fibers, and the used material of plastic layer mainly is a TPO.
9, a kind of composite material for package of food according to claim 1 is characterized in that sandwich layer can be made up of ply of paper and aluminium foil layer, and the used material of ply of paper mainly is string or synthetic fibers.
10, a kind of composite material for package of food according to claim 1 is characterized in that sandwich layer can be made up of aluminium foil layer and plastic layer, and the used material of plastic layer mainly is a TPO.
11, the production method of a kind of composite material for package of food according to claim 1, it is characterized in that described production method is extrusion molding or coating process, the production technology of extrusion molding is will gather hydroxyl fourth fat and poly-hydroxyl penta resin copolymer is expressed on the sandwich layer with extruder, makes poly-hydroxyl fourth fat and poly-hydroxyl penta resin copolymer be applied to sandwich layer with the form of thin layer; The production technology of coating process is to use coating device, makes poly-hydroxyl fourth fat and poly-hydroxyl penta resin copolymer be applied to sandwich layer with the form of thin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001118919A CN1145552C (en) | 2000-03-05 | 2000-03-05 | Composite material for package of food and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001118919A CN1145552C (en) | 2000-03-05 | 2000-03-05 | Composite material for package of food and its preparing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1359789A true CN1359789A (en) | 2002-07-24 |
| CN1145552C CN1145552C (en) | 2004-04-14 |
Family
ID=4581787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001118919A Expired - Fee Related CN1145552C (en) | 2000-03-05 | 2000-03-05 | Composite material for package of food and its preparing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1145552C (en) |
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2000
- 2000-03-05 CN CNB001118919A patent/CN1145552C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1145552C (en) | 2004-04-14 |
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Granted publication date: 20040414 Termination date: 20190305 |
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| CF01 | Termination of patent right due to non-payment of annual fee |