CN101181948A - High-barrier thermophilic digestion resistant easy-stripping membrane - Google Patents
High-barrier thermophilic digestion resistant easy-stripping membrane Download PDFInfo
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- CN101181948A CN101181948A CNA2007101587785A CN200710158778A CN101181948A CN 101181948 A CN101181948 A CN 101181948A CN A2007101587785 A CNA2007101587785 A CN A2007101587785A CN 200710158778 A CN200710158778 A CN 200710158778A CN 101181948 A CN101181948 A CN 101181948A
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Abstract
The invention provides a high resistance and high temperature braising and cooking tearable membrane. The invention is characterized in that the invention consists of three layers of macromolecule material with good compatibility and close molecule structure, with the external layer is modified polyalkenes, the middle layer is multi-copolymerized polypropylene and the internal layer is terpolymer (ethene-ethylene-propylene butene). The modified polypropylene is metallocene modified polypropylene. The modified polypropylene occupies the proportion of 20% to 25%, the multi-copolymerized polypropylene occupies 50% to 60%, and the ethene-ethylene-propylene butene copolymer occupies 20% to 25%. The invention has extremely good biological inertia innocuity and is suitable for food packages; the invention does not generate the deformation, has wide applicable range, ensures the storages of convenient foods, children food, jelly, soft can, etc. not to be mortified or deteriorated, and reaches the requirement of asepsis (F0 is more than 8); the invention does not generate poisonous matters in the application and recovery process, has no pollution and belongs to environmental protective product.
Description
Technical field
The present invention relates to a kind of be used to pack Hot capping film and film for packaging such as various instant food, infant foods, jelly, foods packed in carton containers.
Background technology
The high-barrier thermophilic digestion resistant easy-stripping membrane main application is to be used for packaging films such as instant food, infant foods, jelly, foods packed in carton containers, this film is through after extruding, according to various food factories operating needs difference, carry out color printing, make Hot capping film and film for packaging end products such as instant food, infant foods, jelly, foods packed in carton containers after cutting, issue the user after packaging.Jelly epiphragma, instant food epiphragma and foods packed in carton containers packaging film major part that enterprises such as present state instant food, infant foods, jelly, foods packed in carton containers use are complex films such as plain polypropylene, polyethylene, polyester, nylon and polyethylene, and these packaging films exist a lot of defectives as instant food, infant foods, jelly, foods packed in carton containers etc.At first can only adopt low temperature distillation (70～90 ℃ 30 minutes) pasteurization method, sterilizing methods under this temperature can only kill all pathogenic bacteria, can not kill mould, bacterium such as saccharomycete, being higher than this temperature can make soft bag or epiphragma produce distortion, so producer is in order to prevent instant food, infant foods, jelly, foods packed in carton containerss etc. rot, all in food, added food preservative, anti fouling composition all has injury to a certain degree to health (particularly children's is healthy), for this reason, State Food and Drug Administration proposes the requirement of cancellation anti fouling composition, in order to reach the purpose of thorough sterilization and long preservation, need to adopt 121-135 ℃ of sterilization technology requirement in 30 minutes.Jelly epiphragma and foods packed in carton containers packaging film that China adopts at present all can not satisfy 121-135 ℃ of sterilization technology requirement in 30 minutes.Even there is minority can reach the packaging film of 121-135 ℃ of 30 minutes condition, majority employing nylon or polyester and polyethylene or polypropylene are combined with each other, cost an arm and a leg, it is beyond affordability to have done enterprise, in addition, this composite material is owing to being that polarity and non-polar polymeric material adopt physical method to be combined with each other, therefore, with abandoning recycling afterwards, it is anti-not possess high-barrier.So must improve to packaging films such as used in the market instant food, infant foods, jelly, foods packed in carton containerss.
Summary of the invention
The objective of the invention is, be to overcome the deficiencies in the prior art, provide a kind of and had that compatibility is good, good, the anti-121-135 of diaphaneity ℃ 30 minutes thermophilic digestions, ripe sealing strength height, sealing property are reliably, easily peel off, easily openable is with recyclable multi-layer co-extruded " high-barrier thermophilic digestion resistant easy-stripping membrane " that utilizes again in back.
In order to solve the technical matters of above-mentioned existence, the present invention adopts following technical proposals:
A kind of high-barrier thermophilic digestion resistant easy-stripping membrane, it is characterized in that adopting three layers of compatibility good, the close High molecular material of molecular structure blind date is composited, and is the outer improved polyalkene that is successively, and interlayer is that multi-component copolymer polypropylene and internal layer are terpolymer (ethene-second third butylene copolymer)
Aforesaid a kind of high-barrier thermophilic digestion resistant easy-stripping membrane is characterized in that: described modified polypropene is the metallocene modified polypropylene.
Aforesaid a kind of high-barrier thermophilic digestion resistant easy-stripping membrane is characterized in that: described modified polypropene accounts for 20-25%, and this multi-component copolymer polyolefin accounts for 50-60% and this ethene-second third butylene copolymer accounts for 20-25%.
Compared with prior art, the invention has the beneficial effects as follows: 1. the high-barrier thermophilic digestion resistant easy-stripping membrane prescription all adopts close compatibility non-polar polymeric material, does not have precipitate, and it is nontoxic to have a good biologically inert, is applicable to packaging for foodstuff; 2. sterilisation temp can reach 121-135 ℃ 30 minutes, do not produce distortion, Applicable scope is extensive, guarantees to store food such as instant food, infant foods, jelly, foods packed in carton containers and does not addle rottenly, reaches aseptic requirement (F
0＞8); 3. high-barrier thermophilic digestion resistant easy-stripping membrane Hot envelope property is good, and sealing property is reliable, and Hot seals and easily openable fast; 4. the back is recyclable to be utilized high-barrier thermophilic digestion resistant easy-stripping membrane again with abandoning; 5. the production process of high-barrier thermophilic digestion resistant easy-stripping membrane to making film, printing, cut all and carry out, has guaranteed the sanitation performance of product from raw pellets to greatest extent in hundred grades of clean by laminar flow environment; 6. high-barrier thermophilic digestion resistant easy-stripping membrane does not produce toxic substance in producing the use removal process, and is pollution-free, belongs to environment-friendly products; 7. high-barrier thermophilic digestion resistant easy-stripping membrane or soft bag storage life are 3 years.
The present invention is described in further detail below in conjunction with accompanying drawing and the specific embodiment:
Description of drawings
Fig. 1 is a flow scheme of the present invention.
Fig. 2 is a structural representation of the present invention.
The specific embodiment
The present invention is a kind of high-barrier thermophilic digestion resistant easy-stripping membrane, is composited by three layers of non-polar polymeric material, is the outer modified polypropene (PP) 1 that is successively, and it is the thermal synthesis layer of high strength, high transparent high temperature resistant; Interlayer is a multi-component copolymer polyolefin (PE) 2, and it is the enhancement layer of toughening functions and adhesive function and heat sealing strength; Internal layer is second third butylene copolymer (PB-1) 3, and it is an easy peel ply high temperature resistant, stable chemical performance.When food such as packaged convenience food, infant foods, jelly, foods packed in carton containers, internal layer of the present invention is 3 layers of second third butylene copolymers (PB-1) and the Food Contact of packaging, can not produce food and pollute.It is to adopt state-of-the-art in the world improved polyalkene poly-mer (PB-1) High molecular material and second third butylene copolymer that meets the sanitation performance standard, through blending and modifying, adopt three extruders and the compound blowing head of superposing type, make by composite co-extruding vanguard technology and technology with heat insulating function.
As this bright embodiment it, modified polypropene (PE) 1 can be the metallocene modified polyethylene.
Principle of the present invention and structure are: on the basis of the multiple High molecular material character of choose reasonable, technical requirements according to high-barrier thermophilic digestion resistant easy-stripping membrane, according to the close compatibility principle of High molecular material and the structure-activity relationship of High molecular material, respectively it is carried out modification and composite molding, study of the influence of high molecular melt crystallization speed to the aggregated structure of material, design and synthesize the agent of nontoxic multifunctional macromolecule material modification and the nucleating agent that are fit to this project, improve the binding power between laminated film diaphaneity and elasticity and layer and the layer.Composite principle according to multilayer complex films, give full play to the advantage of each layer film, prepare Combination property and functions of use and all have the incomparable complex film of single thin film, composite forming technology solves the resistance to elevated temperatures of final products emphatically, the thermophilic digestion performance, product heat sealing strength and solve easy stripping performance.Structure function of the present invention is designed to: the top layer is to have good compatibility, can be good at being combined with each other with functional layer, printed layers.Interlayer provides good hot weld envelope effect, and the combined strength bination of the adhesive function raising complex film between layer and the layer is provided.Internal layer is the easy peel ply of stable chemical performance, and this layer has stable chemical properties, does not have precipitate, and any reaction takes place discord food, can provide sealing property of failure-free can reach easy stripping performance again simultaneously.In order to form multilayer intersection composite structure effectively, be to adopt each runner reasonable in design that the compound blowing head of superposing type of thermal insulation barrier layer is all arranged on equipment, and the advanced molding technology thereof of employing downward-blowing water-cooling, make the high-barrier thermophilic digestion resistant easy-stripping membrane of producing have high temperature resistant 121-135 ℃ of 30 minutes thermophilic digestion sterilization ability, sealing property is reliably easily peeled off, and performances such as fine elasticity and toughness are arranged.
The purpose of the applicant's invention high-barrier thermophilic digestion resistant easy-stripping membrane is: adopt state-of-the-art in the world multiple difference in functionality modified poly ethylene (PE) and second third butylene copolymer (PB-1) material, study of the influence of high molecular melt crystallization speed to the aggregated structure of material, through blending and modifying, the multi-layer co-extruded blowing head of superposing type that has heat insulating function by design-calculated voluntarily, downward-blowing water-cooling extrusion and blow molding equipment, online vanguard technology of cutting and technology, produce have nontoxic, high temperature resistant 121-135 ℃ of 30 minutes thermophilic digestions sterilization, elasticity is good, the heat sealing strength height, sealing property is good, easily peel off the recyclable instant food that utilizes again, infant foods, jelly, packaging materials for food such as foods packed in carton containers (abbreviation high-barrier thermophilic digestion resistant easy-stripping membrane).The production technology that food such as cancellation China instant food, infant foods, jelly, foods packed in carton containers add anti fouling composition is used 121-135 ℃ of 30 minutes sterilization technology.Fill up the blank of domestic this technology.
The present invention adopts the solubility parameter multi-component copolymer poly-mer 2 close with PE, makes itself and modified poly ethylene 1, second third butylene copolymer (PB-1) 3 by graft copolymerization, produces the combined strength bination of certain avidity increase high-barrier thermophilic digestion resistant easy-stripping membrane.Its production method (technological process) is as follows:
Its component ratio is by following cooperation: modified poly ethylene (PE) 1 accounts for 23%, multi-component copolymer poly-mer 2 account for 55% and this ethene-second third butylene copolymer (PB-1) 3 account for 22%.
Claims (3)
1. high-barrier thermophilic digestion resistant easy-stripping membrane is characterized in that being composited by three floor height molecular materials, is the outer modified poly ethylene 1 that is successively, and interlayer is that multi-component copolymer polyolefin 2 and internal layer are second third butylene copolymer (PB-1) 3.
2. a kind of high-barrier thermophilic digestion resistant easy-stripping membrane according to claim 1 is characterized in that: described modified poly ethylene 1 is the metallocene modified polyethylene.
3. a kind of high-barrier thermophilic digestion resistant easy-stripping membrane according to claim 1 and 2 is characterized in that: described modified poly ethylene 1 accounts for 20-25%, and this multi-component copolymer polypropylene 2 accounts for 50-60% and this second third butylene copolymer (PB-1) 3 accounts for 20-25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101587785A CN101181948A (en) | 2007-12-10 | 2007-12-10 | High-barrier thermophilic digestion resistant easy-stripping membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101587785A CN101181948A (en) | 2007-12-10 | 2007-12-10 | High-barrier thermophilic digestion resistant easy-stripping membrane |
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| Publication Number | Publication Date |
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| CN101181948A true CN101181948A (en) | 2008-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101587785A Pending CN101181948A (en) | 2007-12-10 | 2007-12-10 | High-barrier thermophilic digestion resistant easy-stripping membrane |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665172B (en) * | 2009-09-04 | 2011-02-09 | 浙江大东南包装股份有限公司 | Packaging film of CPP agricultural product and preparation method thereof |
| CN102179983A (en) * | 2011-01-25 | 2011-09-14 | 云梦县德邦实业有限责任公司 | Biaxially oriented polyethylene (BOPE) cooking film |
| CN103072326A (en) * | 2012-10-19 | 2013-05-01 | 大连富利达塑料制品有限公司 | Asymmetric high-temperature resistant self-adhesive packaging material |
| CN103072356A (en) * | 2012-10-19 | 2013-05-01 | 大连富利达塑料制品有限公司 | Easy-tearing high temperature cooking resistant soft plastic composite packaging material |
| CN103203919A (en) * | 2013-02-22 | 2013-07-17 | 浙江诚信包装材料有限公司 | High-barrier semi-high temperature cooking liquid packaging material and packaging bag made of the same |
| CN104476879A (en) * | 2014-11-21 | 2015-04-01 | 江门市蓬江区华龙包装材料有限公司 | Film easy to uncover and application method of film |
| CN108909123A (en) * | 2018-07-12 | 2018-11-30 | 安徽迈高化工科技有限公司 | A kind of easily peelable digestion resistant polypropylene film |
-
2007
- 2007-12-10 CN CNA2007101587785A patent/CN101181948A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665172B (en) * | 2009-09-04 | 2011-02-09 | 浙江大东南包装股份有限公司 | Packaging film of CPP agricultural product and preparation method thereof |
| CN102179983A (en) * | 2011-01-25 | 2011-09-14 | 云梦县德邦实业有限责任公司 | Biaxially oriented polyethylene (BOPE) cooking film |
| CN103072326A (en) * | 2012-10-19 | 2013-05-01 | 大连富利达塑料制品有限公司 | Asymmetric high-temperature resistant self-adhesive packaging material |
| CN103072356A (en) * | 2012-10-19 | 2013-05-01 | 大连富利达塑料制品有限公司 | Easy-tearing high temperature cooking resistant soft plastic composite packaging material |
| CN103203919A (en) * | 2013-02-22 | 2013-07-17 | 浙江诚信包装材料有限公司 | High-barrier semi-high temperature cooking liquid packaging material and packaging bag made of the same |
| CN104476879A (en) * | 2014-11-21 | 2015-04-01 | 江门市蓬江区华龙包装材料有限公司 | Film easy to uncover and application method of film |
| CN108909123A (en) * | 2018-07-12 | 2018-11-30 | 安徽迈高化工科技有限公司 | A kind of easily peelable digestion resistant polypropylene film |
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Open date: 20080521 |