CN105059683A - Waterproof and safe file seal and production process thereof - Google Patents

Waterproof and safe file seal and production process thereof Download PDF

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Publication number
CN105059683A
CN105059683A CN201510498403.8A CN201510498403A CN105059683A CN 105059683 A CN105059683 A CN 105059683A CN 201510498403 A CN201510498403 A CN 201510498403A CN 105059683 A CN105059683 A CN 105059683A
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China
Prior art keywords
stupefied
file
facial tissue
paper
front plate
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CN201510498403.8A
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Chinese (zh)
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CN105059683B (en
Inventor
常江
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Individual
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Individual
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Priority to CN201510498403.8A priority Critical patent/CN105059683B/en
Publication of CN105059683A publication Critical patent/CN105059683A/en
Priority to PCT/CN2016/076451 priority patent/WO2017024796A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D27/00Envelopes or like essentially-rectangular containers for postal or other purposes having no structural provision for thickness of contents
    • B65D27/12Closures
    • B65D27/14Closures using adhesive applied to integral parts, e.g. flaps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D27/00Envelopes or like essentially-rectangular containers for postal or other purposes having no structural provision for thickness of contents
    • B65D27/32Opening devices incorporated during envelope manufacture
    • B65D27/38Tearing-strings or -strips
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38Packaging materials of special type or form
    • B65D65/40Applications of laminates for particular packaging purposes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention proposes a preparation process of a file seal; the file seal comprises a front plate, a back plate and a sealing plate; a tearing strip, a gluing area and an antitheft line are formed on the sealing plate; the front plate and the back plate are both micro corrugated boards with multilayer structures; and the surfaces of the micro corrugated boards are coated with waterproof agents or plastic films. The preparation process comprises such steps as surface paper slitting, offset printing, waterproof agent or plastic film coating, surface paper pasting, die cutting and back bag bonding, or comprises the steps of surface paper preprinting, waterproof agent or plastic film coating, paperboard manufacturing, die cutting and back bag bonding.

Description

A kind of waterproof and the file of safety envelope and production technology
Technical field
The present invention relates to packing technique field, especially relate to a kind of file envelope of delivering for mail packaging.
Background technology
Envelope, after encapsulation letter or file, is sent to addressee by post office or express company, is realized the information exchange between sender and addressee; This mode realizing information exchange by envelope mailing letter or file can save the road cost or time cost that exchange between sender with addressee greatly, and envelope mailing letter or file facilitate the life of people.At present, the envelope that post office or express company select is that paper material is made, and is generally following two kinds of structures: a kind of envelope, comprises envelope body, and envelope body is made up of the envelope front and the envelope back side for writing addressee information and adhesive stamp; Envelope front is provided with flap, and after envelope body put into by letter or file, flap is bonding with the envelope back side; Envelope front 1 has the flanging making envelope front and the envelope back side form the enclosure space placing letter or file, and flanging is bonded on the envelope back side by glue; This envelope is after loading onto letter or file, and flanging and envelope back side bonding position do not take any safety method, and flanging can be opened rear secondary bonding and use, and the letter of envelope inside or file are easily replaced and cause losing.
Another kind of envelope structures, comprise envelope body, envelope body is made up of the envelope front and the envelope back side for pasting addressee and sender information list, the envelope back side is provided with flap, envelope front is provided with the flanging making envelope front and the envelope back side form the enclosure space placing letter or file, and flanging is bonded on envelope front 1 by glue; After envelope body put into by letter or file, flap is bonding with envelope front 1, and addressee and sender information list are bonded in flap again; The envelope of this structure is after loading onto letter or file, and the bonding position in flanging and envelope front is taked without any safety method, and flanging can be opened the bonding use of rear secondary equally, and the letter of envelope inside or file are easily replaced and cause losing.
The present inventor once passed through to use multi-layer mini-type corrugated board early stage, improve hardness and the deflection of file envelope self, ensure that file envelope possesses moistureproof and waterproof performance by coating waterproof layer, by use tack good, hold the double faced adhesive tape that viscosity is strong and peel strength is high and carry out involution, and utilize tear strip to split, while raising encapsulating firmness, facilitate fractured operation, and the secondary recovery use achieved file envelope, by adding, there is tearing to pieces property, the expendable antitheft edge of a knife, ensure that the delivery safety of file envelope loaded article.
But it still exists needs improvements, such as in transport express delivery process, due to paper hardness and deflection poor, the as easy as rolling off a log article causing file inside front cover to fill are folded or damage distortion by pressure.Water-reducible finish with an organic solvent, can not belong to absolute environmental protection truly unavoidably.Theftproof performance also requires further improvement simultaneously.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of can effectively unpacking-preventing, prevent file to be stolen, tamper file envelope that waterproof, energy-conserving and environment-protective and preventing are forged and production technology thereof.
First, the invention provides a kind of file envelope with brand new, improve the multi-layer mini-type corrugated board of the present inventor's previous utilization, select the common corrugation of multilayer, comprise that A is stupefied, B is stupefied, C is stupefied, E is stupefied, F is stupefied, G is stupefied and O is stupefied more than one, drastically increase hardness and the deflection of file envelope self, ensure that the integraty of loaded article in file envelope, reduce loaded article folded or damage the risk of distortion by pressure, gained file envelope has better folding and deformation performance against pressure.
Further, the compound system using starch solution and silicasol to be formed on the surface of corrugated board carries out top sizing, further improves the ring crush intensity of fluting board while ensureing paper water resistance, promotes the deflection of file envelope.
The present invention relates to file envelope and use water repellant or plastic sheeting, ensure the waterproof and dampproof performance of file envelope.For water repellant, use acrylate/occlusive polyurethane emulsion system, it not only makes the water-proofness of paper strengthen, and also enhances the folding strength of paper simultaneously.But the use of above-mentioned water repellant unavoidably needs with an organic solvent in production technology.In order to avoid the use of organic solvent, provide the feature of environmental protection of technique, the present invention provides simultaneously and uses plastic sheeting to replace water repellant, comprises polyvinyl chloride film, polyethylene foil, mylar etc., particularly preferably mylar.On the one hand, plastic sheeting merrily and lightheartedly transparent, air-tightness good, good waterproof performance, smooth surface, make file seal there is better texture, water resistance.On the other hand, use plastic sheeting not re-use water-reducible finish, thus avoid in process of production with an organic solvent and other volatile organic compounds, realizing the environmental protection of production process.Meanwhile, preferably use degradable films, also can improve file envelope use after caused environmental protection problem, moreover compare and use water-reducible finish, plastic sheeting is more easily recycled, and greatly reduces productive costs and avoids the generation of environmental pollution.
The safety performance of file envelope affects it to use and one of the most important performance promoted, although use in the patented technology before the present inventor to there is moistureproof adhesive and add and there is tearing to pieces property, the expendable antitheft edge of a knife, reach anti-theft, this antitheft edge of a knife is that inner paper and facial tissue are all cut by cutter version, but can scratch out, and be not destroyed, in addition, when there is no adhered by double sided plaster, be easy to touch off when vanning transport, the present invention is in order to head it off, employ powerful double faced adhesive tape on the one hand, when stripping, in paper can by double faced adhesive tape bonding fall at least 70%, on the other hand, the design of the edge of a knife is changed again, only on inner paper, do otch, facial tissue is not cut, and in the paper position of cutting should be consistent with area with the position being glued double faced adhesive tape with area, or it is close, like this after being glued, after stripping, in being cut, paper is easy to by two-sided gluing from getting off, and cannot restore, anti-theft is more excellent.
Therefore overall all physical indexs, in-use performance and the safety performance changing traditional file and seal of the file envelope of brand new provided by the present invention, has stronger marketing value of service.
First the present invention provides a kind of file to seal, comprise: front plate 11, backplate 12, hush panel 110, the top side of described front plate 11 is connected to described hush panel 110, the bottom side of described front plate 11 is connected to described backplate 12, described hush panel 110 is formed with tear strip 111 and anti-theft wire 113, described front plate 11 and backplate 12 are the corrugated board of multiple-structure, be selected from A stupefied, B is stupefied, C is stupefied, E is stupefied, F is stupefied, more than one during the stupefied and O of G is stupefied, the surface of described minitype corrugation cardboard scribbles water repellant or is covered with plastic sheeting, described water repellant is acrylate/occlusive polyurethane emulsion system, described plastic sheeting is selected from and comprises polyvinyl chloride film, polyethylene foil, the group of the composition such as mylar.
Further seal according to file of the present invention, anti-theft wire forms closed region, and double faced adhesive tape region when this enclosed region and seal bond in hush panel is identical, and the anti-theft wire edge of a knife degree of depth equals the thickness of paper in hush panel.Thus once sealing after peel off again, in being cut paper just by two-sided gluing in get off, cannot restore, theftproof performance is more excellent.
Further seal according to file of the present invention, comprise: left side board 13 and right side board 14, the left side of described front plate 11 is connected to described left side board 13, the right side of described front plate 11 is connected to described right side board 14, after described front plate 11 and backplate 12 doubling, described left side board 13 and right side board 14 are pasted on the outside face of described backplate 12.
Further seal according to file of the present invention, wherein said left side board 13 and right side board 14 are provided with anti-theft wire 131,141, described front plate 11 and backplate 12 are connected by backfin line one, and the indentation line 116,121 that to be provided with backfin line in the front plate 11 and backplate 12 of described backfin line both sides be symmetric line.
Further seal according to file of the present invention, wherein said front plate 11 is integrally connected to described hush panel 110 by backfin line 114, the whole length that described tear strip 111 traverses hush panel 110 is arranged, and is provided with reinforced rib 112 on described tear strip 111.
Further seal according to file of the present invention, wherein said tear strip 111 is formed by spaced the offering some short-term cut holes, bend cut hole or run through circular hole of two parallel liness along hush panel 110 length direction, and described reinforced rib 112 is by arranging one or more cotton rope or plastic strip formation at tear strip 111 inner central along tear strip bearing of trend.
Further seal according to file of the present invention, wherein said adhesive area is arranged at the inside face of the hush panel on described tear strip 111 top, and its enclosed region shape formed with the anti-theft wire 113 in hush panel is identical unanimously.
Further seal according to file of the present invention, the length of wherein said hush panel 110 is slightly less than the length of described front plate 11, described hush panel 110 directly can be inserted in file envelope and form container structure.
Further seal according to file of the present invention, wherein said front plate 11, backplate 12 and hush panel 110 have rectangular configuration, and described left side board 13 and right side board 14 have trapezium structure.
Further seal according to file of the present invention, all turnings of wherein said front plate 11, backplate 12, left side board 13, right side board 14 and hush panel 110 all have fillet structure.
The present invention further provides the production technology of described file envelope,
Production technology X comprises facial tissue and cuts, offset printing, be coated with water repellant or coating plastic film, mount facial tissue, cross cutting, paste haversack, concrete steps: first a volume facial tissue is cut into required size, then offset press printing is gone up, use K-formula rubbing method, spray painting or knife coating carry out surface coating water repellant, or upper film layer after offset press printing, facial tissue covers layer of plastic film, then Paper-pasting machine is gone up, and before mounting facial tissue, core paper and inner paper to be fitted by sewing thread on card and first form one, and then facial tissue is mounted on core paper by Paper-pasting machine by facial tissue, so just, produce couch board, follow-up again at mould cutting machine cross cutting, paste braces machine and paste haversack, forming machine is amounted to, paste double faced adhesive tape and tearing adhesive tape.Described water repellant is acrylate/occlusive polyurethane emulsion system, and described plastic sheeting is selected from the group comprising the compositions such as polyvinyl chloride film, polyethylene foil, mylar.
Production technology Y comprises facial tissue and preprints, be coated with water repellant or coating plastic film, make cardboard, cross cutting, paste haversack, concrete steps: preprint machine printing by a coil paper, use water color ink prints, printed facial tissue uses K-formula rubbing method, spray painting or knife coating carry out surface coating water repellant, or upper film layer after offset press printing, facial tissue covers layer of plastic film, then sewing thread on card is gone up, by facial tissue out of the press, core paper and inner paper three coil paper pass through board production, produce cardboard, can produce two-layer, three layers or more layers, and then cross cutting, paste the follow-up works such as braces.Described water repellant is acrylate/occlusive polyurethane emulsion system, and described plastic sheeting is selected from the group comprising the compositions such as polyvinyl chloride film, polyethylene foil, mylar.
Further, being prepared as follows of water repellant that the present invention uses: dry and be equipped with in the reactor of heat indicator, reflux condensing tube, mixer and add triethylamine, IPDI, polycaprolactone glycol and catalyst dibutyl tin dilaurate, in 80 DEG C of reaction 2h.Be cooled to 75 DEG C afterwards, add dihydromethyl propionic acid, reaction, add imidazoles and continue reaction 1h.Subsequently, polybutylacrylate latex is slowly added in reactor, rp-emulsification under high-speed stirred, obtain butyl acrylate/occlusive polyurethane complex emulsions.
The butyl acrylate used in the present invention/occlusive polyurethane complex emulsions, on the one hand ,-the NCO that occlusive polyurethane high temperature deblocking generates can be combined with the hydroxy chemical of paper fibre, improves anchoring strength and the compactness thereof of fiber; On the other hand, the use of butyl acrylate makes water resistance improve, and paper fastness to water is increased; Meanwhile, can form hydrogen bond with paper cellulosic hydroxy, improve binding force between fiber, intensity is increased, and folding strength can improve.
Further, the plastic sheeting that the present invention uses is mylar, preferably uses biaxially oriented polyester film, and it has excellent transparent, soft, water resistance.The use of plastic sheeting makes file envelope have smooth covering, and customer experience is good.
Further, cardboard of the present invention is all corrugated boards of multiple-structure, be selected from that A is stupefied, B is stupefied, C is stupefied, E is stupefied, F is stupefied, G is stupefied and O stupefied in two or more, namely two corrugations or many corrugations is adopted, can be that AB is stupefied, BC is stupefied, ACE is stupefied, AEC is stupefied, BCE is stupefied, EOF is stupefied, FGO is stupefied, by selecting to obtain that there is the cardboard that pop strength is not less than 2000kPa to the combination of different corrugation, file of the present invention being sealed there is more damage resistibility energy.
Use the paper that total grammes per square metre is identical, all properties index of the file envelope that production technology of the present invention is produced all can far away higher than file envelope (the such as common traditional file envelope use 300g/m that traditional processing technology is produced 2monolithic ash the end blank sheet of paper, and this patent produce triplex board file envelope, facial tissue 100g/m 2+ core paper 100g/m 2+ inner paper 100g/m 2, total grammes per square metre is also 300g/m 2, but the performance that the file that this patent is manufactured out seals is far away higher than the traditional file envelope that monolithic is common).
At least following technique effect can be reached by technical solutions according to the invention:
1), more excellent anti-fold, prevent damaging distortion by pressure: the formation sheet material of file envelope of the present invention is by using multi-layer mini-type corrugated board, can be that AB is stupefied, BC is stupefied, ACE is stupefied, AEC is stupefied, BCE is stupefied, EOF is stupefied, FGO is stupefied, by selecting to obtain that there is the cardboard that pop strength is not less than 2000kPa to the combination of different corrugation, file of the present invention is sealed there is more damage resistibility energy, drastically increase hardness and the deflection of file envelope self, ensure that the integraty of loaded article in file envelope, reduce loaded article folded or damage the risk of distortion by pressure, gained file envelope has better folding and deformation performance against pressure.
2), complete moistureproof and waterproof: file of the present invention is enclosed in the inside and outside surface coating butyl acrylate/occlusive polyurethane complex emulsions of cardboard or is directly covered with plastic sheeting.Butyl acrylate/occlusive polyurethane complex emulsions improves fiber bonding strength and compactness, plastic sheeting merrily and lightheartedly transparent, air-tightness good, good waterproof performance, smooth surface, file is sealed there is better texture, water resistance.
3), better tamper-security: all design use by each bonding part sealed at file and there is the close-shaped antitheft edge of a knife, the edge of a knife degree of depth and inner paper consistency of thickness, once Kaifeng after sealing, inner paper will be stripped and cannot restore, and ensure that the delivery safety of file envelope loaded article.
4), Safety and Environmental Protection: use film to replace water-reducible finish, avoid the use of organic solvent and other volatile organic compounds, avoid the environmental pollution that the use of organic solvent brings, the use of film is more easy to be recycled simultaneously, reduces environmental pollution.
5), spatial accommodation is large: respectively design a symmetrical indentation line by the front plate of sealing at file and backplate, effectively can strut file envelope, accommodate more article or have certain thickness article.
6), file of the present invention envelope entire compression intensity is large, and the physical performance indexs such as moistureproof and waterproof anti-fold are superior, easy to use and recoverable, and safety performance is good, has wide marketing application prospect.
7) file envelope preparation technology of the present invention is simple, and properties of product are more excellent.
Accompanying drawing explanation
Accompanying drawing 1 is the deployed configuration schematic diagram of file of the present invention envelope;
In figure, the implication of each Reference numeral is as follows:
11-front plate, 110-hush panel, 111-tear strip, 112-reinforced rib, 113-anti-theft wire, 114-backfin line, 116-indentation line, 12-backplate, 121-indentation line, 13-left side board, 131-anti-theft wire, 14-right side board, 141-anti-theft wire.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail, to enable those skilled in the art's understanding the solution of the present invention clearly, but does not therefore limit the scope of the invention.
Embodiment one:
As shown in Figure 1, file envelope entirety provided by the present invention comprises: comprising: front plate 11, backplate 12, hush panel 110, the top side of described front plate 11 is connected to described hush panel 110, the bottom side of described front plate 11 is connected to described backplate 12, described hush panel 110 is formed with tear strip 111 and anti-theft wire 113, described front plate 11 and backplate 12 are three-decker ACE corrugated board, and surface scribbles water repellant acrylate/occlusive polyurethane emulsion system.
Described front plate 11 has rectangular configuration, and described front plate 11 is connected to described hush panel 110 by backfin line 114, thus described hush panel 110 can along the folding surface being covered in front plate 11 of backfin line 114.The inside face of described hush panel 110 is provided with adhesive area further, described adhesive area is preferably arranged at the hush panel inside face on described tear strip 111 top, narrow shape is formed as along hush panel length direction, preferably traverse whole hush panel 110 length arrange, and adopt tack good, hold the irreversible double faced adhesive tape that viscosity is strong and peel strength is high.
Described hush panel 110 is provided with anti-theft wire 113 and forms closed region, double faced adhesive tape region when this enclosed region and seal bond in hush panel is identical, and the anti-theft wire edge of a knife degree of depth equals the thickness of paper in hush panel.Thus once sealing after peel off again, in being cut paper just by two-sided gluing in get off, cannot restore, theftproof performance is more excellent.
Described left side board 13 and right side board 14 are integrally connected to the limit, the left and right sides of described front plate respectively by backfin line, preferred described left side board 13 and right side board 14 have identical trapezium structure, and are respectively arranged with anti-theft wire 131 and anti-theft wire 141 on described left side board 13 and right side board 14.
Preparation technology X: first a volume facial tissue is cut into required size, then offset press printing is gone up, use spray painting or knife coating to carry out surface coating water repellant, then go up Paper-pasting machine, and before mounting facial tissue, core paper and inner paper to be fitted by sewing thread on card and first form one, and then facial tissue is mounted on core paper by Paper-pasting machine by facial tissue, and so just produce triplex board, follow-up again at mould cutting machine cross cutting, paste braces machine and paste haversack, forming machine is amounted to, pastes double faced adhesive tape and tearing adhesive tape.Described water repellant is acrylate/occlusive polyurethane emulsion system.
Dry and be equipped with in the reactor of heat indicator, reflux condensing tube, mixer and add 50ml triethylamine, 10g IPDI, 5g polycaprolactone glycol and catalyst dibutyl tin dilaurate (accounting for 0.02% of IPDI quality), in 80 DEG C of reaction 2h.Be cooled to 75 DEG C afterwards, add 0.8g dihydromethyl propionic acid, reaction 2h, add 10g imidazoles and continue reaction 1h.Subsequently, 20g polybutylacrylate latex is slowly added in reactor, rp-emulsification under high-speed stirred, obtain butyl acrylate/occlusive polyurethane complex emulsions.
Embodiment two,
File seal structure in the present embodiment is compared with the file seal structure of embodiment one, and be only to use mylar to replace the water repellant acrylate/occlusive polyurethane emulsion system of three-decker ACE corrugated board surface coating, all the other are all identical.
Preparation technology X: first a volume facial tissue is cut into required size, then offset press printing is gone up, upper film layer after offset press printing, facial tissue covers layer of plastic film, plastic sheeting is biaxially oriented polyester film, then Paper-pasting machine is gone up, and before mounting facial tissue, core paper and inner paper to be fitted by sewing thread on card and first form one, and then facial tissue is mounted on core paper by Paper-pasting machine by facial tissue, and so just produce three-decker ACE corrugated board, follow-up again at mould cutting machine cross cutting, paste braces machine and paste haversack, forming machine is amounted to, pastes double faced adhesive tape and tearing adhesive tape.
Embodiment three:
The present embodiment file seal structure is identical with embodiment one file seal structure, and it is prepared by following technique:
Preparation technology Y:
Facial tissue is preprinted, be coated with water repellant, make cardboard, cross cutting, subsides haversack, concrete steps: preprint machine printing by a coil paper, use water color ink prints, printed facial tissue uses spray painting or knife coating to carry out surface coating water repellant, then goes up sewing thread on card, facial tissue out of the press, core paper and inner paper three coil paper are passed through board production, produce cardboard, three-decker cardboard can be produced, and then cross cutting, paste the follow-up works such as braces.Described water repellant is acrylate/occlusive polyurethane emulsion system, and its preparation is with embodiment one.
Embodiment four:
The present embodiment file seal structure is identical with embodiment two file seal structure, and it is prepared by following technique:
Preparation technology Y:
Facial tissue is preprinted, coating plastic film, make cardboard, cross cutting, subsides haversack, concrete steps: preprint machine printing by a coil paper, use water color ink prints, and after offset press printing, upper film layer, facial tissue covers layer of plastic film, then sewing thread on card is gone up, by facial tissue out of the press, core paper and inner paper three coil paper by board production, produce cardboard, can triplex board be produced, and then cross cutting, paste the follow-up works such as braces.
Finally illustrate that the concrete use procedure that file of the present invention seals is: first by front plate 11 and backplate 12 along backfin line 122 doubling, then left side board 13 and right side board 14 are pasted on the outside face of described backplate by the adhesive with anti-soak properties, form file envelope agent structure; Then mail article are loaded file envelope inner, and utilize described backplate 12 and the combined action of indentation line 121,116 in front plate 11, file envelope can be strutted further to accommodate thicker article.Then hush panel 110 is inwardly folded the outside face being covered in backplate along backfin line 114, after peelling off the protective film on hush panel adhesive area, the inside face of hush panel 110 is pasted on the outside face of backplate 12, realize the encapsulating of file envelope.When file envelope splits, only need tear strip 111 to tear the envelope that can open file quickly and easily, simultaneously after tear strip is by tearing by the hush panel part below tear strip is directly inserted in file envelope after backfin line 114 doubling, realize file be enclosed in general encapsulating requirement under recycling.
File envelope of the present invention, by using multi-layer mini-type corrugated board, improves hardness and the deflection of file envelope self, ensure that the integraty of loaded article in file envelope; Directly be covered with plastic sheeting by the paperboard surface of sealing at file, plastic sheeting merrily and lightheartedly transparent, air-tightness good, good waterproof performance, smooth surface, make file seal there is better texture, water resistance; By use have tack good, hold the involution that viscosity is strong and peel strength is high irreversible double faced adhesive tape carries out file envelope, and the fractionation of file envelope is carried out by design tear strip, while raising file package secures soundness, facilitate fractured operation, achieve simultaneously and the secondary recovery of file envelope is used; : all design use by each bonding part sealed at file and have the close-shaped antitheft edge of a knife, the edge of a knife degree of depth and inner paper consistency of thickness, once Kaifeng after sealing, inner paper will be stripped and cannot restore, and ensure that the delivery safety of file envelope loaded article.Overall all physical indexs, in-use performance and the safety performance changing traditional file and seal of the file envelope of brand new provided by the present invention, has stronger marketing value of service.
Below be only that the preferred embodiment of the present invention is described; technical scheme of the present invention is not limited to this; the any known distortion that those skilled in the art do on the basis that major technique of the present invention is conceived all belongs to the claimed technology category of the present invention, and the concrete protection domain of the present invention is as the criterion with the record of claims.

Claims (5)

1. the preparation technology of a file envelope, file package is drawn together: front plate (11), backplate (12), hush panel (110), the top side of described front plate 11 is connected to described hush panel (110), the bottom side of described front plate 11 is connected to described backplate (12), described hush panel (110) is formed with tear strip (111) and anti-theft wire (113), described front plate (11) and backplate (12) are the corrugated board of multiple-structure, the surface of described minitype corrugation cardboard scribbles water repellant or coating plastic film, concrete steps comprise:
Production technology X comprises facial tissue and cuts, offset printing, be coated with water repellant or coating plastic film, mount facial tissue, cross cutting, paste haversack, concrete steps: first a volume facial tissue is cut into required size, then offset press printing is gone up, use K-formula rubbing method, spray painting or knife coating carry out surface coating water repellant, or upper film layer after offset press printing, facial tissue covers layer of plastic film, then Paper-pasting machine is gone up, and before mounting facial tissue, core paper and inner paper to be fitted by sewing thread on card and first form one, and then facial tissue is mounted on core paper by Paper-pasting machine by facial tissue, so just, produce couch board, follow-up again at mould cutting machine cross cutting, paste braces machine and paste haversack, forming machine is amounted to, paste double faced adhesive tape and tearing adhesive tape.Described water repellant is acrylate/occlusive polyurethane emulsion system, and described plastic sheeting is selected from the group comprising the compositions such as polyvinyl chloride film, polyethylene foil, mylar.
2. the preparation technology of a file envelope, file package is drawn together: front plate (11), backplate (12), hush panel (110), the top side of described front plate 11 is connected to described hush panel (110), the bottom side of described front plate 11 is connected to described backplate (12), described hush panel (110) is formed with tear strip (111) and anti-theft wire (113), described front plate (11) and backplate (12) are the corrugated board of multiple-structure, be selected from A stupefied, B is stupefied, two or more during the stupefied and E of C is stupefied, the surface of described minitype corrugation cardboard scribbles water repellant or coating plastic film, concrete steps comprise:
Production technology Y comprises facial tissue and preprints, be coated with water repellant or coating plastic film, make cardboard, cross cutting, paste haversack, concrete steps: preprint machine printing by a coil paper, use water color ink prints, printed facial tissue uses K-formula rubbing method, spray painting or knife coating carry out surface coating water repellant, or upper film layer after offset press printing, facial tissue covers layer of plastic film, then sewing thread on card is gone up, by facial tissue out of the press, core paper and inner paper three coil paper pass through board production, produce cardboard, three layers or more layers can be produced, and then cross cutting, paste the follow-up works such as braces.Described water repellant is acrylate/occlusive polyurethane emulsion system, and described plastic sheeting is selected from the group comprising the compositions such as polyvinyl chloride film, polyethylene foil, mylar.
3. the preparation technology according to any one of claim 1-2, it is characterized in that, being prepared as follows of water repellant: dry and be equipped with in the reactor of heat indicator, reflux condensing tube, mixer and add triethylamine, IPDI, polycaprolactone glycol and catalyst dibutyl tin dilaurate, in 80 DEG C of reaction 2h.Be cooled to 75 DEG C afterwards, add dihydromethyl propionic acid, reaction, add imidazoles and continue reaction 1h.Subsequently, polybutylacrylate latex is slowly added in reactor, rp-emulsification under high-speed stirred, obtain butyl acrylate/occlusive polyurethane complex emulsions.
4. the preparation technology according to claim 1-3, is characterized in that, described plastic sheeting is mylar, preferably uses biaxially oriented polyester film.
5. the preparation technology according to any one of claim 1-5, it is characterized in that, described cardboard is all corrugated boards of multiple-structure, be selected from that A is stupefied, B is stupefied, C is stupefied, E is stupefied, F is stupefied, G is stupefied and O stupefied in more than one, preferably two kinds, three kinds, four kinds, namely adopting two corrugations or many corrugations, can be that AB is stupefied, BC is stupefied, ACE is stupefied, AEC is stupefied, BCE is stupefied.
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