CN102874452B - Self-fastening film-coated veneer food-packing sheet and production process thereof - Google Patents
Self-fastening film-coated veneer food-packing sheet and production process thereof Download PDFInfo
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- CN102874452B CN102874452B CN201210380211.3A CN201210380211A CN102874452B CN 102874452 B CN102874452 B CN 102874452B CN 201210380211 A CN201210380211 A CN 201210380211A CN 102874452 B CN102874452 B CN 102874452B
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Abstract
The invention discloses a self-fastening film-coated veneer food-packing sheet and a production process thereof. The self-fastening film-coated veneer food-packing sheet comprises a base, first fastening edges and second fastening edges, wherein the first and second fastening edges are integrated with the base. Each of the base, the first fastening edges and the second fastening edges is provided with a first film layer. A first crease is arranged between each first fastening edge and the base. A second crease is arranged between each second fastening edge and the base. Each first fastening edge is provided with fastening slits, and each second fastening edge is provided with fastening tongues. A film gap is arranged between each first fastening edge and the corresponding second fastening edge, and the apex of the film gap locates at the intersection of the corresponding first crease and the corresponding second crease. A fastening angle for mutual fastening of one first fastening edge and the corresponding second fastening edge is formed between a connecting line, between the corresponding fastening tongue and the apex of the corresponding film gap, and a connecting line, between the corresponding fastening slit and the apex of the corresponding film gap. The angle of each film gap is half of that of the fastening angle. Each film gap is provided with a second film layer. The packing sheet in the sheet shape is waterproof, available for minimal airtight packaging, available for large-scale industrial flow production, and convenient to recover.
Description
Technical field
The present invention relates to a kind of food product packets load and production technology, belong to wood working industry, natural veneer food packaging applications.
Background technology
The main material of well-known packaging for foodstuff both domestic and external is paper and plastics or composite paper-plastic material.Usage ratio approximately respectively accounts for half, the output value about 30,000,000,000 of domestic food packaging.The raw MAT'L of common plastics is non-renewable ore deposit class resource, and the raw MAT'L of food stage packaging paperboard is reproducible timber resources.But wood fiber pulping and paper-making, often produces one ton of paper, need consume timber 2.5 cubic meter, water consumption 100-200 cubic meter, power consumption 2000-2500 kilowatt hour, consumption coal 300-400 kilogram, hundreds of kilograms of caustic soda, discharge large amount of sewage and waste gas simultaneously.So always papermaking is called as: " big power consumer, water consumption rich and influential family, blowdown rich and influential family ".
Must does is the object of people production packagings for foodstuff, why through this process of papermaking? current people, constantly making great efforts directly to use in its virgin materials production packaging for foodstuff, achieve certain success, but can not reach desirable cost performance effect all the time.
According to the eating habit of China, packaging for foodstuff generally needs waterproof.Common waterproof sheet has overlay film paperboard and a small amount of overlay film wood chip, material structure is the structural strength that one deck Structural layer (paperboard, wood chip or multilayer material composite) provides material, and another one functional layer (resin molding) provides the waterproof of material, antiseized, anti-ly blends safety and sanitation resistance to elevated temperatures.Three-dimensional waterproof has two kinds of modes to realize, and one adopts the bonding of overall limit, and three-dimensional waterproof adopts foldable integral to realize.But overlapping reaches three layers, this just require coating card paper can resistant to collapsing non-leakage.Overlay film paperboard must adopt multilayer paper-plastic stick, and this material softness is high but intensity is low, complex manufacturing, cost are large.Another kind is that corner cut bonding realizes three-dimensional waterproof, but the waterproof at angle is difficult, and general employing angle partial folds and the leak stopping of angle point glue realize three-dimensional waterproof.Common overlay film wood skin intensity is large but glue bond is cut in waterproof employing, and glue leak stopping also will be put in angle.Such manufacture of materials watertight packing complex process, efficiency are low.Be not difficult to find out their material structure, Structural layer and functional layer are not cut the while of being exactly not cut simultaneously.Certainly lead to identical production technology solid production, volumetric packaging, three-dimensional transport, solid use.The inevitable recruitment of this technique is many, investment is large, efficiency is low, cost is high, large-scale industrial production is difficult.
In order to reduce the object of environmental pollution, people wish that a kind of packaging material for food is natural, can remove the paper-making process of highly energy-consuming, high water consumption, high pollution, high cost from.
In order to improve the water-proof function that strength of material keeps good simultaneously, people wish that the Structural layer of this material and functional layer can layered shaping.Structural layer corner cut and hemisection folding line can reach and keep intensity solid is amounted to, self-clinching is convenient simultaneously, and the whole overlay film of functional layer reaches waterproof, antiseized, anti-ly blends safety and sanitation resistance to elevated temperatures.
In order to can large-scale industrial production, people wish that this technique is removed the single solid of single mode from and produced, and reach plane overlay film, the plane of cross cutting produces several or tens products of a mould and once complete.Stereo shaping is completed by client, and product tangent line design science is reasonable, and client is easy to use, from buckle forming.
In order to reach the regulation used of American-European catering trade food containers in limited time, (food containers of catering trade leaves disinfection cabinet or sealed package, and must finish using at 2 hours in exposed air, time-out is disinfected again.), people wish this product small amount sealed package, reach use hygienic requirements comprehensively.
In order to keep the tradition of European countries' baking bread tub (bread that tub cures has special banksia rose taste) to require that bread can not be bonded at tub inwall simultaneously, people wish that this product covers complete antiadhesion barrier with in thick wood chip box.Not only keep traditional properties but also take conveniently.
In order to reduce long-distance transport cost, people wish that this product minimizes packaging, increase substantially transport capacity.
In order to the comprehensive application of resource, people wish that this product reclaims convenience, comprehensive application after using.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned the deficiencies in the prior art, and provide that a kind of technique is simple, tooling cost and traffic cost is low and reclaim easily can the overlay film wood rind food package panel of self-clinching and production technology.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of can the overlay film wood rind food package panel of self-clinching, comprise matrix and be arranged on and matrix detains limit and second with matrix all-in-one-piece first detain limit, at described matrix, first button limit and the second button limit are provided with the first coating layer, between the first button limit and matrix, the first bending line is set, between the second button limit and matrix, the second bending line is set, first button limit is provided with button seam, second button limit is provided with button tongue, it is characterized in that: between the first button limit and the second button limit, overlay film mouth is set, the summit of this overlay film mouth is on the intersection point of the first described bending line and the second bending line, the line on described button tongue and overlay film mouth summit and described button stitch and to form first detain limit and second and detain the fastening angle that limit fastens mutually between the line on overlay film mouth summit, the angle of described overlay film mouth is the half at described fastening angle, described overlay film mouth is provided with one second coating layer.
First coating layer is less than or equal to the length on the button limit that length is less the first button limit and the second button limit from cutting the outside length in overlay film summit.
The second described coating layer extends inwardly to whole matrix.
Can the production technology of overlay film wood rind food package panel of self-clinching, it is characterized in that: step is as follows:
The first step, log are cut into slices: slicing thickness is 0.4-0.8 millimeter, and are cut into strip section;
Second step, to dry: control the aqueous ingredients of section at 15-18%;
3rd step, for the first time overlay film: coated temperature 50-80 degree, overlay film pressure 8-12 MPa;
4th step, for the first time cross cutting: the outline line and the overlay film mouth that cut out the first button limit or the second button limit in the both sides in strip slice width direction, extrude the first bending line, the second bending line; Pressure 1-2 MPa;
5th step, second time overlay film: from overlay film mouth, second time overlay film line is outwards set, overlay film again in second time overlay film line, coated temperature 50-80 degree, overlay film pressure 8-12 MPa.
6th step, for the first time cross cutting: the outline line semi-finished length direction after secondary overlay film cutting out another button limit, d ie cutting press 1-2 MPa.
The Structural layer of food product packets load of the present invention and function (waterproof) layer can layered shaping, Structural layer can corner cut, at maintenance intensity folding convenient not injured surface overlay film simultaneously, waterproof layer must be complete guarantee water resistance, make full use of simultaneously the natural characteristic plane overlay film of material, shrink-packaging, from buckle forming, reclaim convenient.
Comprehensive parameters contrast (table 1) of common various food stage packing
To sum up analyze; From the angle of material property, overlay film wood rind food package panel anisotropy, paper, plastics isotropy.From the angle of environmental protection, overlay film wood chip is first-selected.From the angle of market, low-intensity food stage packing (200 grams, paper, less than 20, plastics) on the contrary to be plastics, overlay film paperboard, wood pulp paperboard, overlay film wood chip order contrary for order.Overlay film wood chip has superiority in high-intensity packing.
It is sheet that the present invention is used for the structure of packing box, and production and transport is convenient, simultaneously in sheet by arranging overlay film mouth and overlay film, thus solve need now folding after the anti-water problem of some glue, be all the significant improvement to prior art structure and in technique.
Compared with prior art, the present invention has following beneficial effect:
1, this production technology selection is natural, produces full physical process, not water consumption, without discharge, pollution-free.
2, this production technology energy consumption is low, just papermaking energy consumption 15-20%.
3, the packaging material for food intensity of this production technology production is high, is several times of equal grammes per square metre paperboard.
4, this production technology is to Structural layer and waterproof layer layered shaping, can heavy industrialization production line balance.
5, this product is that small amount pyrocondensation sealed package conveniently stores, guarantees to use health.
6, this product storing for minimizing packaged convenience, reducing traffic cost.
7, this product is the use of client's self-clinching, and tangent line design science reasonable employment is quick and convenient.
8, this Product Green environmental protection, recovery facilitate, wide application market outlook are open.Large scale communityization is applied, and green leaves offspring for, and benefit profit is instantly.
Accompanying drawing explanation
Fig. 1 is package panel Structural layer schematic diagram of the present invention;
Fig. 2 is package panel product figure of the present invention;
Fig. 3 is part waterproof overlay film wood rind food package panel constructional drawing;
Fig. 4 is the enlarged diagram of Fig. 3 overlay film mouth;
Fig. 5 is part waterproof overlay film Chip Production flow scheme;
Fig. 6 is product schematic diagram after Fig. 5 cross cutting;
Fig. 7 is product schematic diagram after Fig. 5 secondary overlay film;
Fig. 8 is product schematic diagram after Fig. 5 secondary die cutting;
Fig. 9 is product schematic diagram after Fig. 5 shrink-packaging;
Figure 10 is product schematic diagram after full waterproof overlay film wood chip secondary overlay film.
Figure 11 is the package panel constructional drawing of the embodiment of the present invention three soup box.
1, resin film layer, 2, adhesive phase, 3, wood chip layer, 4, Structural layer, 5, functional layer, 6, secondary overlay film sideline, 7, wood fiber analysis, 8, exterior angle, 9, interior angle, 10, self-clinching seam, 11, first time die cut lines, 12, secondary die cutting line, 13, self-clinching tongue, the 14, first button limit, the 15, second button limit, 16, the first bending line, the 17, second bending line, 18, overlay film mouth.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is elaborated:
In whole overlay film wood rind food package panel design process, consider from materials selection, sheet structure, product design, processing arrangement, recycling as a system engineering, from natural raise wood to recycle each link all linked with one another, leave foreshadowing wherein energy-saving and emission-reduction, comprehensive application, economize on resources and run through wherein.
Materials are selected;
Structural materials select savings amounts large, get convenience, low price, pure white tasteless fast-growing woods (as poplar, the paulownia etc.) veneer reaching food stage be packaging for foodstuff ideal framework material.There are 8,000,000 hectares of fast-growing woods in China, occupies the first in the world.Waterproof material selects degradable resin film (as PE, PLA etc.), and the compound of structural materials and waterproof material is a kind of desirable high performance-price ratio packing, not only environmentally-friendly sanitary but also intensity well while grease-proof and waterproof.
Structural layer structure;
Structural layer is three layers or five-layer structure, namely covers the first tunic at natural veneer skin single or double by adhesive agent, see Fig. 1, is five-layer structure.Properties generation fundamental change after the wooden leather belly film of very easy cracking.
Product structure;
The structure of package panel of the present invention is three-decker, sees Fig. 2, namely on the basis of Structural layer, covers the second tunic by lining cement.Structural layer can be the complex of individual layer or multilayer material.Functional layer can waterproof, antiseized, antiseepage resin molding.
Product design;
Part waterproof overlay film wood rind food package panel (Fig. 3) is example (Fig. 3).Extensively can be applied in the packaging for foodstuff of band juice as fast food, pot-stewed meat or fowl, snack etc.
1, the design of profile, this packing requirements opening is large, part waterproof, intensity want height to be generally designed to bucket type.
2, fasten the design of angle and overlay film angle (dotted line), fasten angle and refer to the angle of overlay film wood rind food package panel under plane, the existence of this angle, can fasten when making the first button limit and second detain edge contraction mutually.Overlay film angle is the angle of overlay film mouth correspondence, and wherein overlay film angle=1/2 fastens the angle moment to ensure that fastening rear surface, limit is detained on the first button limit and second smooth.If overlay film angle is greater than 1/2 fastening angle, then after fastening, the film of inside, overlay film angle relaxes, if overlay film angle is less than 1/2 fastening angle, then film is tight, cannot self-clinching after fastening, and self-clinching easily pulls open film by force.
3, first time cross cutting (solid line) and secondary die cutting line (three long and short dash lines), cross cutting cuts Structural layer for the first time, and secondary die cutting cuts Structural layer and functional layer.First time die cut lines outside secondary die cutting line interior and stay error log.
4, the design of self-clinching tongue and self-clinching seam, consider the anisotropic feature of overlay film wood rind food package panel, self-clinching tongue must design in elasticity and the warping resistance effort that can improve self-clinching tongue along machine direction.In snakehead type head, in circle, in the middle part of the large little self-clinching tongue of root, width is greater than self-clinching seam width 1-2 millimeter, cannot exit certain auto-lock function when self-clinching tongue inserts by force after self-clinching seam.Self-clinching seam can design easy machine direction in office, U-shaped.Make self-clinching stitch self-clinching when Impact direction and self-clinching stitch that cut-out direction is vertical prevents self-clinching tongue from inserting to stitch and split in the width direction.
5, the design of secondary overlay film sideline (dotted line); Consider the hierarchical design feature of overlay film wood rind food package panel, first time cross cutting figure must design that consider secondary overlay film with edge positions that is overlay film and offset distance.
6, the design of bending line impression (long and short dash line); Consider the anisotropic feature of overlay film wood rind food package panel, do not designing impression bending line along machine direction, by overlay film wood rind food package panel natural torsion, at inverse machine direction design impression bending line.
7, the design at box angle, consider overlay film wood rind food package panel anisotropic feature, interior angle designs a stress dispersion arc, when horizontal side is turned up along machine direction along stress dispersion arc natural torsion.A boss along machine direction is designed at exterior angle, and when longitudinal side is turned up, broken line bight, longitudinal fiber direction is not easy to damage functional membrane.
7, self-clinching waterproofing design; Package panel turns up self-clinching, and dotted line is theoretical water-proof wire, water height be approximately box high 2/3, belong to part waterproof overlay film wood rind food package panel.
Processing arrangement;
The technological process of part waterproof overlay film Chip Production: 1, log slicing → 2, cut airing → 3, overlay film cuts → 4, polychrome printing → 5, first time cross cutting → 6, secondary overlay film → 7, secondary die cutting → 8, shrink-packaging → 9, self-clinching use
Recycle;
Overlay film wood rind food packaging all adopts natural quality matetrial manufacture, wherein wood fiber 48-50%, lignin 40-45%, degradable resin 2-5%.
1, hot pressing making sheet; Retrieve that overlay film wood rind food packaging only needs simple crushing, mats formation, hot pressing just can produce high strength, high-quality zero formaldehyde fast-growing woods plank, becomes the ideal material of house ornamentation, Furniture manufacturing.Production process is without the need to adhesives, and the degradable resin film of veneer surface is exactly desirable adhesives.
2, combustion power generation; The overlay film wood rind food packaging reclaimed can direct combustion power generation, and cal val is greatly about 4500-4800 kilocalorie/ton
3, the overlay film wood rind food packaging of biogas, recovery only need pulverize gas processed, makes large-minded about 240-250 cubic meter. and/ton, takes material composting.
Embodiment one: part waterproof overlay film Chip Production
The production technology of wood chip is as shown in Figure 5: 5.1, log slicing, 5.2, cut airing, 5. 3, overlay film cuts, 5.4, polychrome printing, 5.5, first time cross cutting, 5.6, secondary overlay film, 5.7, secondary die cutting, 5.8, shrink-packaging, 5.9, self-clinching uses.
1, log slicing: the poplar stage casing selecting improved seeds, carries disconnected length 2600, gets skin slicing, slicing thickness 0.4-0.8 millimeter.
2, cut airing: it is 2500 × 650 airings that wooden skin slicing got off is cut out, control aqueous ingredients at 15-18%.
3, overlay film is cut: airing wood skin is put into hydraulic pressure film layer, and film uses pre-coating film (hot melt adhesive and film coat in advance).Coated temperature 50-80 degree, overlay film pressure 8-12 MPa.Divide after overlay film and be cut to 850 × 650.
4, polychrome printing: 850 × 650 overlay film wood chips are put into printer printing, ink adopts food stage environment-friendly ink.
5, first time cross cutting: 850 × 650 printing overlay film wood chips are put into indentation die-cutting machine and carry out indentation die-cutting pressure 1-2 MPa.
6, secondary overlay film: the half-blank after indentation die-cutting is put into bar shaped film layer and carries out bar shaped overlay film, coated temperature 50-60 degree, overlay film pressure 3-5 MPa.
7, secondary die cutting: the half-blank after secondary overlay film is put into bar shaped mould cutting machine and carries out bar shaped cross cutting, d ie cutting press 1-2 MPa.
8, shrink-packaging: 100 overlaps of the finished product after secondary die cutting are carried out PE shrink-packaging.Pyrocondensation temperature 150 degree
9, self-clinching uses: when client turns up self-clinching according to description of operation, dotted line is theoretical water-proof wire, water height be approximately box high 2/3, belong to part waterproof overlay film wood rind food package panel.
Embodiment two; Full waterproof overlay film Chip Production
1, log slicing: the poplar stage casing selecting improved seeds, carries disconnected length 2600, gets skin slicing, slicing thickness 0.4-0.8 millimeter.
2, cut airing: wooden skin slicing got off is cut out as 2500*650 airing, control aqueous ingredients at 15-18%.
3, overlay film is cut: airing wood skin is put into hydraulic pressure film layer, and film uses pre-coating film (hot melt adhesive and film coat in advance).Coated temperature 50-80 degree, overlay film pressure 8-12 MPa.Divide after overlay film and be cut to 850*650.
4, polychrome printing: 850*650 overlay film wood chip is put into printer printing, ink adopts food stage environment-friendly ink.
5, first time cross cutting: 850*650 is printed overlay film wood chip and puts into indentation die-cutting machine and carry out indentation die-cutting pressure 1-2 MPa.
6, secondary overlay film: the half-blank after indentation die-cutting is put into bar shaped film layer and carries out bar shaped overlay film, coated temperature 50-60 degree, overlay film pressure 3-5 MPa, after overlay film completes, product as shown in Figure 10.
7, secondary die cutting: the half-blank after secondary overlay film is put into bar shaped mould cutting machine and carries out bar shaped cross cutting, d ie cutting press 1-2 MPa.
8, shrink-packaging: 100 overlaps of the finished product after secondary die cutting are carried out PE shrink-packaging.Pyrocondensation temperature 150 degree
9, self-clinching uses: when client turns up self-clinching according to description of operation, dotted line is theoretical water-proof wire, and water height is greater than actual height, belongs to full waterproof overlay film wood rind food package panel.
Embodiment three soup box
See Figure 11, packing requirements: environmentally-friendly sanitary, sound construction are reliable, all leakproofs, belong to soup packaging for foodstuff.
Fluid or semi-fluid food product package and production technique flow process identical with embodiment one.
Log is cut into slices: select high-quality fast-growing woods (as poplar, paulownia etc.), uses wood working machinery section.
Two-sided overlay film: the veneer sheet material of process is carried out two-sided overlay film.
Printing: by customer requirement at the surface printing word of overlay film veneer sheet material and trade mark.
Cross cutting: carry out cross cutting impression by designing requirement.Secondary overlay film cross cutting: carry out one side strip overlay film (bar covers) by dotted line, carry out cross cutting by long and short dash line.
Packed and transported: in units of some, by packing rope or packing film packed and transported.
Use: use by description of product client is folding.Long and two-short dash line be maximum water level higher than the minimum bead of box body, so box body is complete waterproof.
Recycle; Hot pressing making sheet, combustion power generation, biogas.
Claims (3)
1. one kind can the overlay film wood rind food package panel of self-clinching, comprise matrix and be arranged on and matrix detains limit and second with matrix all-in-one-piece first detain limit, at described matrix, first button limit and the second button limit are provided with the first coating layer, between the first button limit and matrix, the first bending line is set, between the second button limit and matrix, the second bending line is set, first button limit is provided with button seam, second button limit is provided with button tongue, it is characterized in that: between the first button limit and the second button limit, overlay film mouth is set, the summit of this overlay film mouth is on the intersection point of the first described bending line and the second bending line, the line on described button tongue and overlay film mouth summit and described button stitch and to form first detain limit and second and detain the fastening angle that limit fastens mutually between the line on overlay film mouth summit, the angle of described overlay film mouth is the half at described fastening angle, described overlay film mouth is provided with one second coating layer, first coating layer is less than or equal to the length on the button limit that length is less the first button limit and the second button limit from the length that the summit of cutting overlay film mouth is outside, the second described coating layer extends inwardly to whole matrix.
2. as described in claim 1 can the production technology of overlay film wood rind food package panel of self-clinching, it is characterized in that: step is as follows:
The first step, log are cut into slices: slicing thickness is 0.4-0.8 millimeter;
Second step, to dry: control the aqueous ingredients of section at 15-18%;
3rd step, for the first time overlay film: coated temperature 50-80 degree, overlay film pressure 8-12 MPa;
4th step, for the first time cross cutting: cut out the first button cincture profile, the second button cincture profile and overlay film mouth, extrude the first bending line, the second bending line; Pressure 1-2 MPa;
5th step, second time overlay film: from overlay film mouth, second time overlay film line is outwards set, overlay film again in second time overlay film line, coated temperature 50-80 degree, overlay film pressure 8-12 MPa.
3. as described in claim 1 can the production technology of overlay film wood rind food package panel of self-clinching, it is characterized in that: step is as follows:
The first step, log are cut into slices: slicing thickness is 0.4-0.8 millimeter, and are cut into strip section;
Second step, to dry: control the aqueous ingredients of section at 15-18%;
3rd step, for the first time overlay film: coated temperature 50-80 degree, overlay film pressure 8-12 MPa;
4th step, for the first time cross cutting: the outline line and the overlay film mouth that cut out the first button limit or the second button limit in the both sides in strip slice width direction, extrude the first bending line, the second bending line; Pressure 1-2 MPa;
5th step, second time overlay film: from overlay film mouth, second time overlay film line is outwards set, overlay film again in second time overlay film line, coated temperature 50-80 degree, overlay film pressure 8-12 MPa;
6th step, for the first time cross cutting: the outline line semi-finished length direction after secondary overlay film cutting out another button limit, d ie cutting press 1-2 MPa.
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| US1680661A (en) * | 1926-03-04 | 1928-08-14 | Alexander N Rosenbaum | Double lock box |
| GB1163521A (en) * | 1966-03-30 | 1969-09-10 | Alperton Carton Company Ltd | Improvements in and relating to Cartons |
| US3908889A (en) * | 1971-06-18 | 1975-09-30 | Paul Vjecsner | Corner lock for paperboard containers |
| FR2806701B1 (en) * | 2000-03-21 | 2002-11-22 | Emin Leydier | BELLOWS TRAY AND ASSOCIATED FLAN |
| CN2520288Y (en) * | 2002-01-09 | 2002-11-13 | 蒋先志 | Disposable food veneer container |
| CN201183640Y (en) * | 2008-01-14 | 2009-01-21 | 景台科技股份有限公司 | Layered structure of food container |
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