CN100400390C - Oxygen-uptake oxygen-resistance type plastic beer bottle cap lining and processing method thereof - Google Patents
Oxygen-uptake oxygen-resistance type plastic beer bottle cap lining and processing method thereof Download PDFInfo
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- CN100400390C CN100400390C CNB2004100542834A CN200410054283A CN100400390C CN 100400390 C CN100400390 C CN 100400390C CN B2004100542834 A CNB2004100542834 A CN B2004100542834A CN 200410054283 A CN200410054283 A CN 200410054283A CN 100400390 C CN100400390 C CN 100400390C
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Abstract
The present invention relates to an oxygen-absorption oxygen-resistance type plastic beer bottle cap lining material which comprises two layers, wherein the first layer is a barrier layer which is an ethyl acetate solution coating film of polyvinylidene chloride; the second layer is a barrier oxygen-absorption layer of which the base body is ethylene vinyl alcohol copolymer barrier resin, and the content of ethene is from 29% to 46%. Oxygen uptake agglomerates containing oxygen absorbent are dispersed in the base body of ethylene vinyl alcohol copolymer, the weight percentage of the added quantity of the oxygen absorbent of miazines and analogues in the ethylene vinyl alcohol copolymer barrier resin is from 0.0001% to 0.1%; the moisture of granular material of the ethylene vinyl alcohol copolymer barrier resin is from 0.1% to 0.3 %; the density of resin is from 1.14g/cm< 3 > to 1.21g/cm < 3 >. In the first step of technology, the polyvinylidene chloride becomes clear solution after dissolved by the ethyl acetate, the thin layer is evenly coated at the bottom of the inner side of a bottle cap in a spraying mode, and the barrier layer on the first layer is formed by natural draying; in the second step, the ethylene vinyl alcohol copolymer barrier resin on the second layer is extruded out in a melt extrusion mode above the barrier layer on the first layer.
Description
Technical field
The present invention relates to a kind of novel seal packing, refer to oxygen uptake oxygen-resistance type plastic beer bottle cap inner pad material and processing technology especially.
Background technology
The ZL01105218.X patent disclosure a kind of making process of oxygen separating layer of beer bottle cap method, pasty state oxygen barrier material transfer is arrived the bottom inside of vinyl cover by delivery roll, carry out repeatedly successively, the very thin one deck oxygen barrier layer of the inboard formation in the lid end, oxygen barrier layer dries up after placing the very short time voluntarily, the oxygen barrier material of this pasty state has very big fugitiveness, be difficult to form the pad of even rounding, and the pad behind the curing molding does not have desirable intensity.The oxygen barrier layer of pad adopts the polyvinylidene chloride material to make in the existing beer bottle cap.
Domestic iron is that oxygen absorbent has had the history in a lot of years, does not meet food hygiene requirement with the food direct contact but iron is oxygen absorbent, can only be present in packaging for foodstuff by the mode of isolation package.In addition, the oxygen absorbent when the pure water of thermal powerplant is handled is hydrazine and diamine one class normally, obviously also can't be applicable to packaging for foodstuff.Because oxygen has ill-effect to food and drink fresh-keeping, need therefore that exploitation is a kind of to have a food sanitation safe, the oxygen of outside successfully can be intercepted, and the Active Packaging Materials that inner trace oxygen is absorbed.
Summary of the invention
The present invention improves the shortcoming that prior art exists, and a kind of improved oxygen uptake oxygen-resistance type plastic beer bottle cap inner pad material and processing technology thereof are provided.
The object of the present invention is achieved like this, a kind of oxygen uptake oxygen-resistance type plastic beer bottle cap inner pad material, the inner pad material has two layers, one deck is a barrier layer, ethyl acetate solution coat film for polyvinylidene chloride, the second layer is the oxygen-absorbing barrier layer, matrix resin is ethylene-vinyl alcohol copolymer barrier resins EVOH, the ethylene contents 40～46% of ethylene-vinyl alcohol copolymer barrier resins, the oxygen uptake master batch that contains oxygen absorbent is dispersed within the ethylene-vinyl alcohol copolymer matrix barrier resins, the addition of miazines and analogue oxygen absorbent thereof at the percentage by weight of ethylene-vinyl alcohol copolymer barrier resins between 0.0001-0.1%; The moisture Control of ethylene-vinyl alcohol copolymer barrier resins pellet is at 0.1-0.3%; Ethylene-vinyl alcohol copolymer barrier resins density 1.14～1.21 gram/cm
3
The processing technology of above-mentioned oxygen uptake oxygen-resistance type plastic beer bottle cap inner pad material is, the first step, with polyvinylidene chloride with after the ethyl acetate dissolving, form the solution of clear, adopt the mode barrier layer that one deck is very thin of spraying to be coated in the bottle cap inside bottom uniformly, form first floor barrier layer after the natural seasoning; In second step, on first floor barrier layer, adopt the mode that melt extrudes to extrude ethylene-vinyl alcohol copolymer barrier resins oxygen-absorbing barrier layer.
The present invention adopts polyvinylidene chloride and ethylene-vinyl alcohol copolymer barrier resins to do the inner lining material of bottle cap, the oxygen barrier performance of the two is better than tens times to several thousand times in other plastics, and the water vapour permeability of polyvinylidene chloride, ethylene-vinyl alcohol copolymer barrier resins and acrylic resin is all very low.Use inner lining material of the present invention to make the liner of bottle cap, liner is by inside and outside two-layer the composition, and internal layer is a barrier layer, stops oxygen to infiltrate from the bottle cap end face; Skin is the oxygen-absorbing barrier layer, is retained in residual oxygen in the bottleneck and the trace oxygen that extravasates into from bottle in theory when absorbing can, and fresh-keeping effect is better than the common plastics lid greatly.Technology of the present invention changes pastes the coating of clear solution on original basis, can obtain reasonable effect, and the technology that internal layer will intercept with oxygen uptake is integrated, and it is more convenient that technology realizes.The distinctive double layer cushion processing technology of the present invention makes fresh-keeping cover have three kinds of hermetically-sealed constructions, one peelable pad, plain cushion and the sealing of dicyclo pad, has expanded the applicability of fresh-keeping cover to different can factories and different bottle mouth encapsulation.Internal layer is to realize that by solution spraying technology skin is to realize by extrusion molding technology.Use fresh-keeping plastic pilfer proof closure of the present invention to keep antitheft, the high-intensity characteristics of former bottle cap, increased resistance oxygen, the new function of block water vapour and oxygen uptake (promptly fresh-keeping), especially be fit to the fresh-keeping seal package that requires extra high plastic bottled beer, fruit juice, tea beverage etc.Inner casing molding oxygen uptake layer triggers oxygen uptake under high humidity environment, quantity of respiratory oxygen reaches 3 milligrams/.The weight of the plastic bottle closure that use the present invention makes is about 3.2g, very light, have good feel, selection is original, reasonable in design, have splendid gas barrier property and excellent sealing performance, the spraying coating process in the technology of the present invention adopts electrodeless atomizing pump, make and spray evenly, accurately, guaranteed the pliable and tough of polyvinylidene chloride film, plentiful and complete.The present invention is designed contains miazines and analogue oxygen uptake layer is passivation under the condition of normal temperature storage, just the oxygen uptake function just can be intensified under moist and acid condition, and active oxygen is had resorption.Oxygen uptake resistance oxygen packing is the new research forward position of packing, and deoxygenation technology of the present invention helps the freshness of beer and local flavor are kept the longer time, removes the anti fouling composition of health risk, and the shelf-life that prolongs transportation and produce.
Processing step of the present invention reduces, and technology realizes more succinct practicality, has saved man-hour, has saved raw material, has improved product quality.
The specific embodiment
A kind of oxygen uptake oxygen-resistance type plastic beer bottle cap inner pad material has two layers, one deck is a barrier layer, ethyl acetate solution coat film for polyvinylidene chloride, the second layer is the oxygen-absorbing barrier layer, matrix resin is ethylene-vinyl alcohol copolymer barrier resins EVOH, the ethylene contents 44% of ethylene-vinyl alcohol copolymer barrier resins, the oxygen uptake master batch that contains oxygen absorbent is dispersed within the ethylene-vinyl alcohol copolymer matrix barrier resins, and the addition of miazines and analogue oxygen absorbent thereof accounts for the percentage by weight 0.0007% of ethylene-vinyl alcohol copolymer barrier resins; The moisture Control of ethylene-vinyl alcohol copolymer barrier resins pellet is 0.1%; Ethylene-vinyl alcohol copolymer barrier resins density 1.14 gram/cm
3
The processing technology of above-mentioned oxygen uptake oxygen-resistance type plastic beer bottle cap inner pad material is, the first step, with polyvinylidene chloride with after the ethyl acetate dissolving, form the solution of clear, adopt the mode barrier layer that one deck is very thin of spraying to be coated in the bottle cap inside bottom uniformly, form first floor barrier layer after the natural seasoning; In second step, on first floor barrier layer, adopt the mode that melt extrudes to extrude ethylene-vinyl alcohol copolymer barrier resins oxygen-absorbing barrier layer.The ethylene-vinyl alcohol copolymer pellet that is about to make and be mixed with oxygen absorbent joins extruding in the hopper formula drier, after the heating blend by screw rod, material is scraped material into empty bottle cap inner bottom part, then by 24 compacting tool set compression mouldings by the scraper cutter of 24 constant speed runnings.In second step process, the equipment of relevant ethylene-vinyl alcohol copolymer barrier resin layers forming work requires:
Extruder: length-diameter ratio L/D=280;
Screw rod design: CR=4.0; Screw rod divides three sections at least, for supplying with section, compression section and metering section;
Hopper formula drier or hot air circular drying machine temperature are 90-110 ℃, and technological temperature is controlled between 170 1 230 ℃;
Filtering net is to be that 80/120-150/50 combines by the order number.
Claims (4)
1. oxygen uptake oxygen-resistance type plastic beer bottle cap inner pad material, it is characterized in that, the inner pad material has two layers, one deck is a barrier layer, ethyl acetate solution coat film for polyvinylidene chloride, the second layer is the oxygen-absorbing barrier layer, matrix resin is the ethylene-vinyl alcohol copolymer barrier resins, the ethylene contents 29～46% of ethylene-vinyl alcohol copolymer barrier resins, the oxygen uptake master batch that contains oxygen absorbent is dispersed within the ethylene-vinyl alcohol copolymer matrix barrier resins, and the addition of miazines oxygen absorbent accounts for the percentage by weight 0.0001-0.1% of ethylene-vinyl alcohol copolymer barrier resins; The moisture Control of ethylene-vinyl alcohol copolymer barrier resins pellet is at 0.1-0.3%; Ethylene-vinyl alcohol copolymer barrier resins density 1.14～1.21 gram/cm
3
2. according to the processing technology of the described oxygen uptake oxygen-resistance type of claim 1 plastic beer bottle cap inner pad material, it is characterized in that, the first step, with polyvinylidene chloride with after the ethyl acetate dissolving, form the solution of clear, adopt the mode barrier layer that one deck is very thin of spraying to be coated in the bottle cap inside bottom uniformly, form first floor barrier layer after the natural seasoning; In second step, on first floor barrier layer, adopt the mode that melt extrudes to extrude ethylene-vinyl alcohol copolymer barrier resins oxygen-absorbing barrier layer.
3. according to the processing technology of the described oxygen uptake oxygen-resistance type of claim 2 plastic beer bottle cap inner pad material, it is characterized in that, in the second step process process be, the ethylene-vinyl alcohol copolymer pellet that makes and be mixed with oxygen absorbent joined in the hopper formula drier push, after the heating blend by screw rod, material is scraped material into empty bottle cap inner bottom part, then by 24 compacting tool set compression mouldings by the scraper cutter of 24 constant speed runnings.
4. according to the processing technology of claim 2 or 3 described oxygen uptake oxygen-resistance type plastic beer bottle cap inner pad material, it is characterized in that in second step process, the equipment of relevant ethylene-vinyl alcohol copolymer barrier resin layers forming work requires:
Extruder: length-diameter ratio L/D=24-30;
Screw rod design: CR=3.0-4.0; Screw rod divides three sections at least, for supplying with section, compression section and metering section;
Hopper formula drier or hot air circular drying machine temperature are 90-110 ℃, and technological temperature is controlled between 170-230 ℃;
Filtering net is to be that 80/120-150/50 combines by the order number.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100542834A CN100400390C (en) | 2004-09-03 | 2004-09-03 | Oxygen-uptake oxygen-resistance type plastic beer bottle cap lining and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100542834A CN100400390C (en) | 2004-09-03 | 2004-09-03 | Oxygen-uptake oxygen-resistance type plastic beer bottle cap lining and processing method thereof |
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| CN1743241A CN1743241A (en) | 2006-03-08 |
| CN100400390C true CN100400390C (en) | 2008-07-09 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110328947A (en) * | 2019-08-13 | 2019-10-15 | 马鞍山卓凡新材料科技有限公司 | A kind of preparation method of environment-protecting and non-poisonous beer plastic bag material |
| CN114196048B (en) * | 2020-09-18 | 2023-04-14 | 中国农业大学 | Oxygen uptake bottle cap gasket and preparation method and application thereof |
| CN117962443B (en) * | 2024-03-28 | 2024-06-04 | 保视丽(上海)新材料科技有限公司 | Low-particle-pollution high-density polyethylene ultra-clean barrel and preparation process thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0372842A (en) * | 1989-05-15 | 1991-03-28 | Mitsui Toatsu Chem Inc | Packaging material for fish egg |
| JPH05262368A (en) * | 1992-03-24 | 1993-10-12 | Japan Crown Cork Co Ltd | Container lid with excellent content long term preserving property |
| US5381914A (en) * | 1991-05-09 | 1995-01-17 | Toyo Seikan Kaisha, Ltd. | Container closure with liner |
| WO1999002419A1 (en) * | 1997-07-10 | 1999-01-21 | Tri-Seal Holdings Inc. | High barrier closure liner with oxygen absorbing capabilities |
| JP3072842B2 (en) * | 1998-05-07 | 2000-08-07 | 日本電信電話株式会社 | Single mode optical fiber |
| JP2003268310A (en) * | 2002-03-14 | 2003-09-25 | Toyo Seikan Kaisha Ltd | Oxygen absorbing coating, coating film and oxygen absorbing laminate |
| CN1507389A (en) * | 2001-03-09 | 2004-06-23 | ����Τ�����ʹ�˾ | Ultra high oxygen barrier films and articles made therefrom |
-
2004
- 2004-09-03 CN CNB2004100542834A patent/CN100400390C/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0372842A (en) * | 1989-05-15 | 1991-03-28 | Mitsui Toatsu Chem Inc | Packaging material for fish egg |
| US5381914A (en) * | 1991-05-09 | 1995-01-17 | Toyo Seikan Kaisha, Ltd. | Container closure with liner |
| JPH05262368A (en) * | 1992-03-24 | 1993-10-12 | Japan Crown Cork Co Ltd | Container lid with excellent content long term preserving property |
| WO1999002419A1 (en) * | 1997-07-10 | 1999-01-21 | Tri-Seal Holdings Inc. | High barrier closure liner with oxygen absorbing capabilities |
| JP3072842B2 (en) * | 1998-05-07 | 2000-08-07 | 日本電信電話株式会社 | Single mode optical fiber |
| CN1507389A (en) * | 2001-03-09 | 2004-06-23 | ����Τ�����ʹ�˾ | Ultra high oxygen barrier films and articles made therefrom |
| JP2003268310A (en) * | 2002-03-14 | 2003-09-25 | Toyo Seikan Kaisha Ltd | Oxygen absorbing coating, coating film and oxygen absorbing laminate |
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| CN1743241A (en) | 2006-03-08 |
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