CN104558991A - Thin film for sealing foods - Google Patents
Thin film for sealing foods Download PDFInfo
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- CN104558991A CN104558991A CN201410727018.1A CN201410727018A CN104558991A CN 104558991 A CN104558991 A CN 104558991A CN 201410727018 A CN201410727018 A CN 201410727018A CN 104558991 A CN104558991 A CN 104558991A
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- film
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- phthalate
- food container
- shape food
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Abstract
The invention discloses a thin film for sealing foods. The thin film comprises the following raw materials in parts by weight: 50-90 parts of polyvinyl alcohol, 0.5-5 parts of filler, 1-10 parts of a plasticizer, 0.5-10 parts of a modifier, 0.5-10 parts of metallocene, 3-10 parts of linear polyethylene and 0.1-2 parts of editable colorant. The thin film for sealing foods keeps very good air-tightness, aroma-keeping property and moisture resistance and is very suitable for sealing cans, bottled soybean milk, milk and other foods.
Description
Technical field
The invention belongs to chemical technology field, particularly a kind of film for shape food container.
Background technology
The output of China's plastics film accounts for 20% of plastics ultimate production, is increase of production one of classification faster in plastics.Along with the fields such as China's packaging, agricultural not only increase the demand of plastics film, the demand estimating China plastics film every year by with more than 9% speed increment, its market outlook are very wide.
In Plastic Packaging Materials, the market demand amplification of thin-film material is maximum, accounts for 46% of Plastic Packaging Materials total amount.Plastic film mainly comprises: heat shrinkable package film, winding package film, food sterile packed film, fruit-vegetable plastic wrap, liquids packaging film etc.Along with China's plastics film industry equipment improves constantly, the advanced level reaching developed country had, emerge a collection of product innovation, such as, biaxially oriented film as substrate of composite package not only overcomes the situation of long-term import, and annual also outlet about 300,000 tons now, earn foreign exchange more than 30 hundred million dollars.In China, the quantity development of the packaging film manufacturing concern of scale rapidly, has reached 2240 at present.
Food sterile packed film refers to and can tolerate the food packing film that food (as milk preparation, beverage, food flavouring) carries out the ultrahigh-temperature needed for instantaneously sterilising, this packing film can make food at not adding preservative agent, without when refrigeration, there is longer shelf-life, this is a new technology, is also one of plastics packed developing direction.Food sterile packed is divided into two kinds, the aseptic large packing bag of a kind of to be capacity be 5 ~ 1000L, and the composite membrane of bag mainly adopts PET aluminium plating film and PE film to be composited; Another kind is aseptic cup type packaging, uses PP/PE/EVA/PVDC/PS multilayer copolymerized compound membrane, and wherein PP is protection tunic, and EVA is tack coat, and PVDC is oxygen barrier layer.
Summary of the invention
The object of this invention is to provide a kind of film for shape food container, to overcome food product pack transfer bag insufficient strength in prior art, in transfer process, pack crackly present situation.Technical scheme provided by the present invention is:
For a film for shape food container, count by weight and be made up of following raw material: polyvinyl alcohol 50 ~ 90 parts, filler 0.5 ~ 5 part, 1 ~ 10 part, softening agent, properties-correcting agent 0.5 ~ 10 part, metallocene 0.5 ~ 10 part, linear polyethylene 3 ~ 10 parts and food dye 0.1 ~ 2 part.
As preferably, for a film for shape food container, count by weight and be made up of following raw material: polyvinyl alcohol 70 ~ 90 parts, filler 0.5 ~ 5 part, 1 ~ 10 part, softening agent, properties-correcting agent 0.5 ~ 5 part, metallocene 1.5 ~ 8 parts, linear polyethylene 4 ~ 8 parts and food dye 0.2 ~ 1 part.
As preferably, the polymerization degree of described polyvinyl alcohol is 1000 ~ 3000.
As preferably, described filler is at least one in organic filler and mineral filler; Described organic filler is wood powder, cloth waste, paper and various fabric fibre; Described mineral filler is glass fibre, diatomite, asbestos, carbon black.
As preferably, described softening agent is at least one in dinoctyl phthalate (DNOP or DnOP), butyl benzyl phthalate (BBP), di-sec-octyl phthalate (DCP), dicyclohexyl phthalate (DCHP), dibutyl phthalate (DBP), diisobutyl phthalate (DIBP), dimethyl phthalate (DMP), diethyl phthalate (DEP), diisononyl phthalate (DINP), Di Iso Decyl Phthalate.
As preferably, described properties-correcting agent is at least one in CPE, ACR, MBS, SBS, ABS and EVA.
As preferably, described food dye is at least one in titanium dioxide, zinc oxide, lithopone.
Present invention also offers this preparation method for the film of shape food container, it is characterized in that, comprise the following steps:
(1) measure each component by formula, mixing, and stir, adopt back the mode of heating up in a steamer, control temperature 100 ~ 150 DEG C, makes material thoroughly dissolve, obtains mixed solution;
(2) mixed solution is left standstill 1 ~ 2 hour at 100 ~ 130 DEG C, pour the advection mould being preheated to 90 ~ 100 DEG C into, curtain coating, on the mirror steel plate of room temperature, makes the rapid gel of mixed solution chilling, it is peeled off from steel plate and obtains the film being used for shape food container.
the beneficial effect of the technical program
1, the film production process for shape food container of the present invention is simple, and raw materials cost is low, is easy to large-scale promotion and use.
2, the film formulation for shape food container of invention is reasonable, and intensity is good, is well suited for for canned, bottled soya-bean milk, milk and other shape food container.
Embodiment
Below in conjunction with concrete example, the present invention is further detailed explanation.The herbal medicine mentioned in embodiment is by States Pharmacopoeia specifications medicinal part
embodiment 1:
By following component part meter by weight ratio: polyvinyl alcohol (polymerization degree is 1000) 70 parts, wood powder 0.5 part, dinoctyl phthalate 1 part, CPE 0.5 part, metallocene 1.5 parts, linear polyethylene 4 parts and titanium dioxide 0.2 part.
Present invention also offers this preparation method for the film of shape food container, it is characterized in that, comprise the following steps:
(1) measure each component by formula, mixing, and stir, adopt back the mode of heating up in a steamer, control temperature 100 DEG C, makes material thoroughly dissolve, obtains mixed solution;
(2) mixed solution is left standstill 1 hour at 100 DEG C, pour the advection mould being preheated to 100 DEG C into, curtain coating, on the mirror steel plate of room temperature, makes the rapid gel of mixed solution chilling, it is peeled off from steel plate and obtains the film being used for shape food container.
embodiment 2:
By following component part meter by weight ratio: polyvinyl alcohol (polymerization degree is 3000) 90 parts, 5 parts, diatomite, dibutyl phthalate 10 parts, MBS 5 parts, metallocene 8 parts, linear polyethylene 8 parts and 1 part, zinc oxide.
Present invention also offers this preparation method for the film of shape food container, it is characterized in that, comprise the following steps:
(1) measure each component by formula, mixing, and stir, adopt back the mode of heating up in a steamer, control temperature 150 DEG C, makes material thoroughly dissolve, obtains mixed solution;
(2) mixed solution is left standstill 2 hours at 130 DEG C, pour the advection mould being preheated to 100 DEG C into, curtain coating, on the mirror steel plate of room temperature, makes the rapid gel of mixed solution chilling, it is peeled off from steel plate and obtains the film being used for shape food container.
embodiment 3:
By following component part meter by weight ratio: polyvinyl alcohol (polymerization degree is 2000) 85 parts, 1.5 parts, asbestos, Di Iso Decyl Phthalate 3 parts, ABS 2 parts, metallocene 3 parts, linear polyethylene 5 parts and lithopone 0.5 part.
Present invention also offers this preparation method for the film of shape food container, it is characterized in that, comprise the following steps:
(1) measure each component by formula, mixing, and stir, adopt back the mode of heating up in a steamer, control temperature 120 DEG C, makes material thoroughly dissolve, obtains mixed solution;
(2) mixed solution is left standstill 1.5 hours at 125 DEG C, pour the advection mould being preheated to 95 DEG C into, curtain coating, on the mirror steel plate of room temperature, makes the rapid gel of mixed solution chilling, it is peeled off from steel plate and obtains the film being used for shape food container.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (8)
1. for a film for shape food container, count by weight and be made up of following raw material: polyvinyl alcohol 50 ~ 90 parts, filler 0.5 ~ 5 part, 1 ~ 10 part, softening agent, properties-correcting agent 0.5 ~ 10 part, metallocene 0.5 ~ 10 part, linear polyethylene 3 ~ 10 parts and food dye 0.1 ~ 2 part.
2. as claimed in claim 1 for the film of shape food container, it is characterized in that, count by weight and be made up of following raw material: polyvinyl alcohol 70 ~ 90 parts, filler 0.5 ~ 5 part, 1 ~ 10 part, softening agent, properties-correcting agent 0.5 ~ 5 part, metallocene 1.5 ~ 8 parts, linear polyethylene 4 ~ 8 parts and food dye 0.2 ~ 1 part.
3., as claimed in claim 1 or 2 for the film of shape food container, it is characterized in that, the polymerization degree of described polyvinyl alcohol is 1000 ~ 3000.
4. as claimed in claim 1 or 2 for the film of shape food container, it is characterized in that, described filler is at least one in organic filler and mineral filler; Described organic filler is wood powder, cloth waste, paper and various fabric fibre; Described mineral filler is glass fibre, diatomite, asbestos, carbon black.
5. as claimed in claim 1 or 2 for the film of shape food container, it is characterized in that, described softening agent is dinoctyl phthalate (DNOP or DnOP), butyl benzyl phthalate (BBP), di-sec-octyl phthalate (DCP), dicyclohexyl phthalate (DCHP), dibutyl phthalate (DBP), diisobutyl phthalate (DIBP), dimethyl phthalate (DMP), diethyl phthalate (DEP), diisononyl phthalate (DINP), at least one in Di Iso Decyl Phthalate.
6., as claimed in claim 1 or 2 for the film of shape food container, it is characterized in that, described properties-correcting agent is at least one in CPE, ACR, MBS, SBS, ABS and EVA.
7., as claimed in claim 1 or 2 for the film of shape food container, it is characterized in that, described food dye is at least one in titanium dioxide, zinc oxide, lithopone.
8., as claimed in claim 1 or 2 for a preparation method for the film of shape food container, it is characterized in that, comprise the following steps:
(1) measure each component by formula, mixing, and stir, adopt back the mode of heating up in a steamer, control temperature 100 ~ 150 DEG C, makes material thoroughly dissolve, obtains mixed solution;
(2) mixed solution is left standstill 1 ~ 2 hour at 100 ~ 130 DEG C, pour the advection mould being preheated to 90 ~ 100 DEG C into, curtain coating, on the mirror steel plate of room temperature, makes the rapid gel of mixed solution chilling, it is peeled off from steel plate and obtains the film being used for shape food container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410727018.1A CN104558991A (en) | 2014-12-03 | 2014-12-03 | Thin film for sealing foods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410727018.1A CN104558991A (en) | 2014-12-03 | 2014-12-03 | Thin film for sealing foods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104558991A true CN104558991A (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410727018.1A Pending CN104558991A (en) | 2014-12-03 | 2014-12-03 | Thin film for sealing foods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104558991A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105086305A (en) * | 2015-08-31 | 2015-11-25 | 南宁市聚祥塑料制品有限责任公司 | Antibacterial preservative film |
| CN105131344A (en) * | 2015-08-18 | 2015-12-09 | 南宁市聚祥塑料制品有限责任公司 | Water-soluble food packaging film |
-
2014
- 2014-12-03 CN CN201410727018.1A patent/CN104558991A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105131344A (en) * | 2015-08-18 | 2015-12-09 | 南宁市聚祥塑料制品有限责任公司 | Water-soluble food packaging film |
| CN105086305A (en) * | 2015-08-31 | 2015-11-25 | 南宁市聚祥塑料制品有限责任公司 | Antibacterial preservative film |
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Application publication date: 20150429 |
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| WD01 | Invention patent application deemed withdrawn after publication |