CN102372109A - Environmentally-friendly paper valve-port packaging bag - Google Patents
Environmentally-friendly paper valve-port packaging bag Download PDFInfo
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- CN102372109A CN102372109A CN2010102620424A CN201010262042A CN102372109A CN 102372109 A CN102372109 A CN 102372109A CN 2010102620424 A CN2010102620424 A CN 2010102620424A CN 201010262042 A CN201010262042 A CN 201010262042A CN 102372109 A CN102372109 A CN 102372109A
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Abstract
The invention relates to a packaging bag, and particularly relates to an environmentally-friendly paper valve-port packaging bag which is used for packaging fumed silica (nanometer material) and all nanoscale and micron-scale fine materials. The packaging bag comprises a packaging bag body and an opening formed on the upper part of the packaging bag, wherein a valve port is arranged at the opening; an annular sealing ring is arranged on the periphery of the valve port inside the packaging bag; an axial section of the sealing ring is V-shaped; the V-shaped bottom faces to the interior of the packaging bag; one side edge of a V-shaped part of the sealing ring is adhered to an inner surface of the packaging bag while the other side edge is adhered to the valve port; the valve port is connected to the packaging bag through the sealing ring; and the opening of the valve port is communicated with an inner cavity of the packaging bag. When a PH value of a packaged material is 3-3.5 and a moisture content of the packaged material is below 1%, a layer of polyethylene synthetic resin film is coated on the surface of a piece of kraft paper or a polyethylene synthetic resin film bag is sleeved on the kraft paper bag and a hole is drilled on the surface of the kraft paper bag, thereby endowing the kraft paper with excellent moisture resistance and air permeability.
Description
Technical field
The present invention relates to packaging bag, specifically a kind of papery valve port environmental protection type packing bag that is used to pack aerosil (nano material) and all nanoscales, micron order fine material.
Background technology
Aerosil and all nanoscales, the packaging bag of micron order material valve port are specially to refer under special pressure condition, with mean grain size 10
-9-10
-12The nanoscale solids particle of the rice order of magnitude and mean grain size are 10
-6-10
-9The micron order particulate matter of the rice order of magnitude is filled in the special papery valve port packaging bag.Because aerosil and nanometer, micro materials approach molecular structure, so ask packaging bag to have high leakproofness.Because aerosil and nanometer, micro materials are had stronger dilatability, so ask packaging bag to have high strength property by high compression.Because aerosil and nanometer, micro materials have high-ratio surface property; So there is the packaging bag asked to have certain moisture resistance; Because aerosil and nanometer, micro materials belong to the aerosol material, contain a large amount of air in the material, so ask packaging bag to have good permeability to air.Because aerosil and nanometer, the packaging bag of micro materials valve port are papery so have the good pollution-free feature of environmental protection.Present this packaging bag only has the U.S., Germany, Japan and my company to produce.
Aerosil belongs to acidic materials.The aerosil pH value reaches 3.7, and the papery wrapper is had corrosive property strongly, makes its forfeiture packaging function.This is the major cause that synthetic resin material and composite paper-plastic material are adopted in early stage packaging bag.During for corrosion stability, the moisture resistance, particularly material pH value that improve packaging bag=3-3.5, material moisture was less than 1% o'clock.Can drench film last layer poly-vinyl film of synthetic resin on the craft paper surface, or put a polyethylene kind film of synthetic resin bag, and, make it have good ground moisture resistance, anti-corrosive properties and permeability to air in its surface punching at kraft paper bag.
Common papery packaging bag and aerosil and nanometer, the packaging bag of micro materials valve port _ _ different.The general institute of common papery packaging bag packaging substance is no more than 95% of packing effective volume, leaves certain impact flow space, prevents that packaging bag from breaking.The general institute of common papery packaging bag packaging substance particle mean grain size is bigger, pact >=0.01mm, and common papery packaging bag still can be played the leakage effect that stops to the bulky grain ordinary matter.
Common papery packaging bag does not have the moisture resistance requirement, can only add plastic sheeting or use the synthetic resin material like protection against the tide, but can produce environmental pollution.
Evolution.
Because _ _ aerosil belongs to acidic materials, so the packaging bag of first generation aerosil is to utilize plastic bag to pack the seventies in eighties of last century.Because aerosil belongs to the aerosol material, and aerosil is not only arranged in the plastic bag of packing into, also has a large amount of gas simultaneously; Not only Packing Unit is few, and traffic cost is high, and is very easily damaged under external force; And the synthetic resin material is difficult for degraded, contaminated environment.The packaging bag of second generation aerosil is the packaging bag that eighties of last century is utilized the composite paper-plastic material making eighties.Because adopt vacuum-packed technique, packaging efficiency significantly improves, but still exist packaging bag to leak material rate height, contain organic solvent in the adhesives, problems such as synthetic resin material contamination environment.Third generation nanometer, be at the end of last century, the packaging bag of adopting wrapper surface composite synthetic resin film to make.Solve the existing problem of second generation packaging bag, but still do not solved problem of environmental pollution.The aerosil packaging bag of the 4th generation is the full papery packaging bag beginning of this century, but this packaging bag remains poorly sealed easy leakage, cracky, problems such as moisture resistance difference at present.To the problems referred to above, design a kind of novel full papery packaging bag, have high leakproofness, high strength, good air permeability, characteristic such as moisture resistance is good is fit to aerosil and nanometer, the requirement of micro materials extra package fully.
The problem that aerosil and nanometer, the packaging bag of micro materials valve port at present exists.
Aerosil and nanometer, micro materials are very small, and particularly the nano material particle diameter approaches molecular diameter, and any small not bond gap all can produce packaging bag and leak, so require packaging bag to have good leak-proof, high leakproofness.
Aerosil and nano material have 100-380m
2/ g, micro materials have 10-200m
2/ g high-specific surface area, very responsive to airborne moisture content and crystal water, so require packaging bag to have good moisture resistance.Nanometer, micro materials (aerosil) that requirement is packed in the packaging bag were placed after 30 days, and moisture content changes≤1%.
Aerosil and nanometer, micro materials belong to the aerosol material, contain a large amount of gas, so require packaging bag to have good venting quality.
Aerosil and nanometer, micro materials are under pressure and vacuum specific condition, to be filled in the packaging bag, have high-expansion, and after packaging bag received high tension, particularly packaging bag was suitable for reading, end opening is more damaged or leakage.So require packaging bag to have high strength property.
Present packaging bag ubiquity: poorly sealed, material is prone to leak, and intensity is not high, and cracky, moisture resistance are not high.This packaging bag is the existing problem of similar packaging bag that comprises import to existing, a kind of novel packaging bag that is used to pack nanometer, micro materials of particular design.This novel package bag quality is higher than the existing U.S., Germany, Japanese like product quality.Has high leakproofness, no leak, high strength, characteristic such as cracky, moisture resistance be not good.
Summary of the invention
The object of the invention provides a kind of have high leakproofness, high strength, good air permeability, and moisture resistance well is fit to the packaging bag of aerosil and all nanoscales, the requirement of micron order material extra package fully.
To achieve these goals, the technical scheme of the present invention's employing is:
The packaging bag of a kind of environment-friendly type papery valve port; Or film layer of polyethylene synthetic resin film packaging bag is drenched on the craft paper surface; Or put a polyethylene kind film of synthetic resin bag at kraft paper bag; Comprise the opening that has of packaging bag bag and packaging bag top setting, opening part is provided with valve port, and said packaging bag bag is to be bonded after being folded by the paper web inward at both ends; It is characterized in that:
Around the inner valve port of packaging bag, be provided with annular seal ring; The shaft section of seal ring is " V " font; The bottom of " V " font is inner towards packaging bag, and seal ring " V " font side partly is adhered to the packaging bag inside face, and another side is mutually bonding with valve port; Valve port is connected through seal ring with packaging bag, and the valve port opening communicates with the packaging bag inner chamber.
Said packaging bag part suitable for reading, its inside of end opening part are provided with lining paper
The said packing bag number of plies be two-layer more than, width≤1mm between the adjacent two layers paper bag.
Offer the ventilative valve opening of pyramid type on the packaging bag bag, the valve opening direction on the appearance facial tissue is that ecto-entad is offered, and promptly the conical bottom face is outside towards packaging bag, and the top is inner towards packaging bag; Valve opening direction on the internal layer paper gasket paper is served as reasons, and introversion is outer to be offered, and promptly the conical bottom face of valve opening is inner towards packaging bag, and the top is outside towards packaging bag;
Said pyramid type valve opening is self-opening when packing material into, after charging finishes, and pyramid type valve opening auto-closing.
One deck lid paper that the bag inside face of packaging bag upper end and lower, bottom end is provided with respectively;
The width of said lid paper is the valve port width, and length is the wrapper of packing sack length, places the suitable for reading and inboard and bonding of going to the bottom of packing sack in-to-in, and four limits are bonding tight, again with packaging bag upper oral part and the bonding sealing of lower bottom part.
Said packaging bag is a rectangle, one deck triangle or oblong is set respectively in four angles of packaging bag in-to-in strengthens lining paper
One deck lid paper that the bag outside face of packaging bag upper end and lower, bottom end is provided with respectively;
The width of said lid paper is the sack width that is equal to or less than the suitable for reading and end opening of packaging bag, and length is the wrapper less than the packaging bag width, and lid paper is bonding tight.。
The top that opening part, sealing valve port circle are arranged in the setting of packaging bag upper oral part is provided with one deck reinforced paper.
Said seal ring and valve port are integral structure, and it is to be in packaging bag in-to-in valve port end outwards to turn down " V " font that forms, and " V " font side after the turnover is adhered to the packaging bag inside face.
Said V " top of font is provided with the non-bonding zone with packaging bag inside face or valve port >=1mm, as the elastic force district.
The wrapper of said packaging bag bag is common craft paper, perhaps in paper pulp, adds the craft paper of distortion starch, crylic acid resin synthetic resin, polyvinyl alcohol synthetic resin or other water-soluble synthetic resin.
Moisture resistance and anti-corrosive properties as to packaging bag have higher requirements, and when the spy was material pH value=3-3.5 fully, material moisture was less than 1% o'clock.Drench film layer of polyethylene film of synthetic resin therein on one deck craft paper surface, or put a polyethylene kind film of synthetic resin bag at kraft paper bag.And, make it have good ground moisture resistance, anti-corrosive properties and permeability to air in its surface punching.
Said packaging bag can be used for the can of aerosil and all nanometers, micro materials.
Said sealing valve port is made
Said valve port seals bags catchy width of approximately 2 times the width of the adhesive part, about the length of the bag catchy parts, take about half the width of the center line of the fold, on the line position toward the bag, fold the edge to stay away from non-bonded areas are ≥ 1mm, bonded to the remainder of the upper opening bags, and then bonded to the ring upper valve port; or directly to the lower edge of the valve mouth folded up, the adhesive opening width of approximately the width of a seal circle, again on both sides of the center folded and glued to form the upper and lower sides of the valve port is about double the pocket-type valve port, fold greater than the width of the upper portion of the valve port width 0-4mm, on line parts toward the bag, pocket shaped opening toward the bag outside, away from the left edge of ≥ 1mm line non-bonded area, bonded to the remaining portion of bags seal catchy, catchy bags and then sealing; wherein the valve orifice shape "
"type or" U "shaped or"
";
Said elastic force district makes
Said leaving apart from the broken line edge >=the non-bonding zone of 1mm, this district is for the elastic force district, under the inside and outside pressure effect of bag, the elastic force district can upspring automatically and outside bag direction move.
Said packaging bag The lower flap paper be with packaging bag under the roughly the same wrapper of open area, place the packaging bag infraoral outside and bonding.Sealing lining paper and packaging bag The lower flap paper can be clamped sealing fully with the packaging bag end opening, prevent that effectively the packaging bag infraoral from leaking and enhancing packaging bag infraoral mechanical strength.
Said packaging bag upper flap paper is roughly the same with packaging bag width suitable for reading, is less than or equal to packaging bag width wrapper, places the packaging bag upper oral part outside and bonding.Sealing lining paper and packaging bag upper flap paper can be clamped sealing fully with packaging bag is suitable for reading, prevent that effectively the packaging bag upper oral part from leaking and strengthen packaging bag upper oral part mechanical strength.
More than said packaging bag bag thickness was two-layer, width was wanted≤1mm between the adjacent two layers paper bag.Make to be unlikely to the stressed unanimity of packaging bag because each layer discontinuity causes packaging bag to break, or between the material entering adjacent two layers wrapper, or material from leakage.
Said pyramid type valve opening is self-opening when packing material into, has air permeability and good, and after charging finished, pyramid type valve opening auto-closing prevented material from leakage, stops air and airborne impurity to get in the packaging bag.The ventilative valve opening awl of pyramid type bottom diameter≤2.5mm, back cut diameter>=0.1mm.
Said packaging bag is drenched film layer of polyethylene film of synthetic resin on one deck craft paper surface therein, or puts a polyethylene kind film of synthetic resin bag at kraft paper bag, and in its surface punching, makes it have good ground moisture resistance, anti-corrosive properties and permeability to air.
This packaging bag specification:
Specification: length≤1200mm, wide≤750mm, sack is wide≤300mm, and valve port is wide≤300mm.
Advantage of the present invention:
1. full papery packaging bag has the pollution-free feature of environmental protection.The packing that the present invention adopts are the no any synthetic resin material made of papery and surface, and environmental protection is prone to degraded.
2. high leakproofness.The present invention is provided with the sealing valve port circle at the packaging bag oral area, can effectively seal valve port and the inconsistent gap that produces of packaging bag width suitable for reading.Sealing valve port circle broken line partly is a closed state simultaneously, can play good sealing function, prevents the material leakage
3. high strength property.One deck lining paper of the bag set inside of the present invention's and end opening suitable for reading in packaging bag; One deck lid paper that bag surface suitable for reading in packaging bag and end opening is provided with; Can the packing sack be clamped sealing fully, prevent that effectively the packaging bag oral area from leaking and enhancing packaging bag oral area mechanical strength.
4. moisture resistance.The present invention adds other water-soluble synthetic resins such as distortion starch (like hydroxymethyl cellulose sodium), crylic acid resin synthetic resin, polyvinyl alcohol synthetic resin in paper pulp.Addition >=0.5%.Make packing have certain moisture resistance.
Moisture resistance and anti-corrosive properties as to packaging bag have higher requirements, and particularly during material pH value=3-3.5, material moisture was less than 1% o'clock.Drench film layer of polyethylene film of synthetic resin therein on one deck craft paper surface, or put a polyethylene kind film of synthetic resin bag at kraft paper bag.And, make it have good ground moisture resistance, anti-corrosive properties and permeability to air in its surface punching.
5. permeability to air.The present invention is provided with the ventilative valve opening of special pyramid type on the packaging bag surface, self-opening when packing material into has air permeability and good, and after charging finished, pyramid type valve opening auto-closing prevented material from leakage, stops air and airborne impurity to get in the packaging bag.After the charging, the packaging bag outside face does not have leakage phenomenon.
Description of drawings
Fig. 1 is a packaging bag overall schematic of the present invention, and wherein a is that packaging bag width, b are that height, the c of packaging bag is package length, and 1 is the packaging bag bag;
Fig. 2 is two kinds of sealing valve port circles of the present invention scheme drawing, and 2 is the sealing valve port circle;
Fig. 3, go to the bottom bag interior sealing lining paper suitable for reading for the present invention, 3 is lining paper;
Fig. 4 covers the paper scheme of installation for the present invention, and 4 for covering paper;
Fig. 5 opens and closed scheme drawing for pyramid type valve opening of the present invention, and wherein a5 is closed for opening b5, and 5 are ventilative valve opening;
Fig. 6 is valve port width of the present invention during less than packaging bag width suitable for reading, a6, b6 place generation slight gap; (? Description of drawings not to)
Fig. 7 produces the leakage phenomenon scheme drawing for packaging bag of the present invention;
Fig. 8 is bonded in packaging bag sack scheme drawing for seal ring of the present invention, and wherein a8 is that bonding zone, b8 are the tension force seam;
Fig. 9 is bonded in scheme drawing above the seal ring for valve port of the present invention;
Figure 10 is a packaging bag of the present invention involution scheme drawing suitable for reading;
Figure 11 leaves for sealing valve port circle broken line of the present invention edge >=the non-bonding zone elastic force of 1mm district scheme drawing;
Figure 12 makes sealing valve port circle scheme drawing for the present invention;
Figure 13 seals the lining paper scheme drawing for the present invention, and a13 is that bonding zone, c13 are the tension force seam for slit, the b13 that possibly exist;
Figure 14 is discharged for air of the present invention, and aerosil and nanometer, micro materials then can not be got rid of scheme drawing.
Figure 15 drenches film layer of polyethylene film of synthetic resin on one deck craft paper surface therein for the present invention, or puts a polyethylene kind film of synthetic resin bag at kraft paper bag.And, make it have good ground moisture resistance, anti-corrosive properties and permeability to air in its surface punching.15a is a film layer for layers of kraft paper 15b
The specific embodiment
In conjunction with accompanying drawing, structure of the present invention is further specified as follows.
This valve port packaging bag technical requirements:
Packing are the packaging bag of the no any synthetic resin material made of papery and surface.Packaging bag is the degradable non-environmental-pollution.Wrapper is common craft paper.When material pH value=3-3.5, material moisture drenched film layer of polyethylene film of synthetic resin therein less than 1% o'clock on one deck craft paper surface, or put a polyethylene kind film of synthetic resin bag at kraft paper bag.And, make it have good ground moisture resistance, anti-corrosive properties and permeability to air in its surface punching.
Nicanee is>=70g/m
2
Packaging bag is provided with more than two layers, and adjacent two layers paper bag width error is 1mm.Every layer of stressed unanimity of packaging bag is unlikely to cause packaging bag to break or material gets between the adjacent two layers wrapper or material from leakage because of each layer discontinuity.
Adopt novel sealing valve port circle and elastic force seal ring technology, can solve the existing valve port of the similar packaging bag position leakage problem that comprises import.
Above valve port, increase one deck reinforced paper, strengthen valve port top intensity, can solve the valve port top and receive external force to make time spent cracky problem.
Bag set inside one deck lining paper of and end opening suitable for reading in packaging bag is provided with one deck lid paper at the bag outside face of suitable for reading and end opening, can improve that packaging bag is suitable for reading, infraoral intensity.Solve the packaging bag oral area because bonding not tight the generation is prone to leak and the not high cracky problem of intensity.
Carry out the ventilative valve opening treatment process of special circular cone (platform) type in wrapper surface; Make packaging bag circular cone (platform) type valve self-opening when packing material into; Have good venting quality, after charging finishes, circular cone (platform) type valve auto-closing (as shown in Figure 5); Prevent material from leakage, stop air and airborne impurity to get in the packaging bag.The ventilative valve cone bottom diameter of circular cone (platform) type is 2.5mm.Back cut diameter is 0.1mm.
One deck triangle or oblong are set respectively in four angles of packaging bag in-to-in strengthen lining paper
Nanometer, micro materials packaging process are that pressure is arranged in packaging bag, or in have malleation to have outward to carry out under the condition of negative pressure.Because nanometer, micro materials are too tiny, any minim gap all possibly cause the leakage of packaging bag.The leakage of packaging bag mainly concentrate on valve port, suitable for reading, go to the bottom, these positions are the weak parts of packaging bag.The packaging bag of common papery valve port is that valve port directly is bonded in bag inside suitable for reading.Because valve port and packaging bag width suitable for reading can not be in full accord; Produce slight gap a, b (as shown in Figure 6) sometimes; Bonding not tight, or under the filling pressure effect, material can slight gap be revealed from the valve port two ends in the bag; Airborne moisture also can influence product design from the material in valve port two ends slight gap gets into bag simultaneously.Or under the effect of expansion loop pressure, valve port breaks, and nanometer, micro materials are escaped from gap location, produces packaging bag leakage phenomenon (as shown in Figure 7).
Packaging bag top is provided with opening, and opening part is provided with valve port 1, around the inner valve port of packaging bag, is provided with annular seal ring 2.The axial cross section of seal ring bag 2 is " V " font; The bottom of " V " font is inner towards packaging bag; A side of seal ring 2 " V " font is adhered to the packaging bag inside face; Another side is mutually bonding with valve port, and valve port is connected through seal ring with packaging bag, and the valve port opening communicates with the packaging bag inner chamber.
1. the sealing valve port ring design scheme one:
Sealing valve port circle width: be about 2 times of packaging bag bond site width suitable for reading.Be about packaging bag upper oral part bit length (as shown in Figure 8).Get that about width is half the to be the line of centers doubling, the broken line position is left apart from the broken line edge and to be >=non-the bonding zone of 1mm in bag, and this district is the elastic force district, and it is suitable for reading that remainder is bonded in packaging bag, again valve port is bonded in seal ring top (as shown in Figure 9).
Behind the packaging bag involution suitable for reading, the sealing valve port circle can effectively seal valve port and the inconsistent gap that produces of packaging bag width suitable for reading.Sealing valve port circle broken line partly is a closed state simultaneously, can play good sealing function, prevents material leakage (shown in figure 10).
Sealing valve port circle broken line edge leaves and is >=non-bonding zone the elastic force of 1mm district.Under the inside and outside pressure effect of bag, the elastic force district can upspring automatically and outside bag direction move, play the gland packing effect, prevent material from leakage (shown in figure 11).
Said seal ring 2 is an integral structure with valve port, and it is to be in packaging bag in-to-in valve port end outwards to turn down " V " font that forms, and " V " font side after the turnover is adhered to the packaging bag inside face.
2. suitable for reading, end opening seals and the design plan of gaining in strength
The packaging bag of common valve port papery is suitable for reading, to go to the bottom be directly to be bonded.Bonding not tight like bonding mouth, any minim gap all very easily produces packaging bag and leaks.In packaging process, packaging bag receives internal pressure, or internal pressure external vacuum power acts on simultaneously, very easily makes bonding mouthful of bonding not severely punished breakage of packaging bag.Nanometer, micro materials are under pressure and vacuum specific condition, to be filled in the packaging bag, because volume by high compression, has high-expansion, make packaging bag receive higher tension force.For this reason, packaging bag is suitable for reading, end opening is very easily damaged or leakage.So require packaging bag to have high strength property, high leakproofness.Solution: at suitable for reading, the inner increase one deck sealing of lower pocket lining paper.At suitable for reading, the outside covering one deck lid of lower pocket paper.Can effectively solve packaging bag and be prone to leakage problem, can strengthen that packaging bag is suitable for reading, end opening intensity, solve packaging bag cracky problem.Suitable for reading, the sealing lining paper of going to the bottom, lid paper design plan.
Getting width is: greater than the valve port width, get length for less than packing sack length wrapper, place the packing sack inner.Four limits are bonding tight.(as shown in Figure 3).Again with the bonding sealing of packaging bag oral area.Get again with the roughly the same lid paper of packaging bag open area and place packaging bag oral area top and bonding.Sealing lining paper and lid paper can be clamped sealing fully with the packing sack, prevent that effectively the packaging bag oral area from leaking and enhancing packaging bag oral area mechanical strength (as shown in Figure 4).
3. the ventilative valve opening design plan of pyramid type
Aerosil and nanometer, micro materials belong to the aerosol material, contain a large amount of gas, so require packaging bag to have good venting quality.Common papery packaging bag permeability to air is relatively poor, can not effectively discharge packaging bag+interior a large amount of air, and gathering of gas not only makes material normally not pour into, and packaging bag is stressed and breakage.Design plan: carry out special pyramid type valve opening permeability to air in wrapper surface and handle.It only is simply to get circular hole on the paper surface that plain bore is handled, and this hole does not have the function of opening automatically with closed.Later-model hole treatment process is that to make the paper surface have following bore dia be 2.5mm, and last hole is the pyramid type valve opening of 0.1mm.After material and air are filled in the packaging bag; At internal pressure, or under the internal pressure, the combined action of external vacuum power, open in Conical Valve type hole; But because last hole and outer paper closed contact; Its gap only can allow air to be discharged less than nanometer or micron, and aerosil and nanometer, micro materials then can not be got rid of.After pressure stops, receive under outside swelling force of material and the effect of outer principal direction internal pressure, pyramid type valve body upper oral part moves down, valve opening auto-closing (as shown in Figure 5).The pyramid type valve opening can prevent effectively that material prevents that to external leakage extraneous air and airborne impurity and moisture content from getting in the packaging bag, plays good anti-leak moisture proof effect in the packaging bag.
Under special pressure condition, with mean grain size 10
-9-10
-12The aerosil of the rice order of magnitude and nanoscale solids particle and mean grain size are 10
-6-10
-9The micron order particulate matter of the rice order of magnitude is filled in the papery valve port of the present invention packaging bag.
Concrete structure of the present invention: the opening that has that comprises packaging bag bag 1 and the setting of packaging bag top; Opening part is provided with valve port, and used wrapper is that full papery does not have any synthetic resin material, around the inner valve port of packaging bag, is provided with annular seal ring 2; The axial cross section of seal ring 2 is " V " font; The bottom of " V " font is inner towards packaging bag, and a side of seal ring 2 " V " font is adhered to the packaging bag inside face, and another side is mutually bonding with valve port; Valve port is connected through seal ring with packaging bag, and the valve port opening communicates with the packaging bag inner chamber;
Sealing valve port circle 2 width are about 2 times of packaging bag bond site width suitable for reading; Be about and be packaging bag upper oral part bit length, get that width is half the to be the line of centers doubling, the broken line position is in bag; Leave apart from the broken line edge >=the non-bonding zone of 1mm; As the elastic force district, it is suitable for reading that remainder is bonded in packaging bag, again valve port is bonded in seal ring top;
One deck lid paper 4 that the bag outside face of packaging bag upper end and lower, bottom end is provided with, the width of said lid paper 4 is the valve port width, and length is the wrapper of packing sack length, places the inner suitable for reading and outside and bonding of going to the bottom of packing sack, and four limits are bonding tight.
The packaging bag surface offers the ventilative valve opening 5 of pyramid type from inside to outside, and the conical bottom face of valve opening is inner towards packaging bag, and the top is outside towards packaging bag; Said pyramid type valve opening 5 is self-opening when packing material into, after charging finishes, and pyramid type valve opening auto-closing.
Its inside of said packaging bag part suitable for reading, end opening part is provided with lining paper 3, and packaging bag bag 1 thickness is more than two layers, width≤1mm between the adjacent two layers paper bag.
Said packaging bag is a rectangle, is bonded after being folded by the paper web inward at both ends, one deck triangle is set respectively in four angles of packaging bag in-to-in strengthens lining paper.
The top that opening part, sealing valve port circle 2 are arranged that is provided with in packaging bag top is provided with one deck reinforced paper.
Aerosil and nanometer, micro materials have high-specific surface area, and be very responsive to airborne moisture content and crystal water, so require packaging bag to have good moisture resistance.Nanometer, micro materials that requirement is packed in the packaging bag were placed 30 days, and moisture content changes less than 1%.Common paper does not have moisture-proof function.
Be with embodiment 1 difference:
The present invention includes packaging bag bag 1, used wrapper is in paper pulp, to add other water-soluble synthetic resins such as distortion starch (like hydroxymethyl cellulose sodium), crylic acid resin synthetic resin, polyvinyl alcohol synthetic resin.Addition is≤5wt%.Make packing have certain moisture resistance.
Sealing valve port ring design scheme two:
Apart from valve port paper lower edge, width is about bonding mouthful of width and upwards turns up (as shown in Figure 9).The right and left forms the valve port upper and lower surface and is about double-ply pocket type valve port again to center doubling and bonding.The upper width of turning up part is larger than or equals the valve port width.The broken line position is in bag, and pocket type opening leaves apart from the broken line edge >=the non-bonding zone of 1mm outside bag, and this district is elastic force district (shown in figure 10).Except that the elastic force district, it is bonded in packaging bag (shown in figure 11) suitable for reading, again with packaging bag involution suitable for reading.Even valve port and packaging bag width suitable for reading is inconsistent, possibly there is the gap, but, can plays good sealing function because sealing valve port circle broken line partly is a closed state, prevent the material leakage.Sealing valve port circle width is greater than the valve port width, can fill up valve port and the inconsistent gap that produces of packaging bag width suitable for reading after bonding, can play good clearance seal effect (shown in figure 12).Leave apart from sealing valve port circle broken line edge >=the non-bonding zone elastic force of 1mm district, under the inside and outside pressure effect of bag, the elastic force district can upspring automatically and outside bag direction move, play the gland packing effect, prevent material from leakage (as shown in Figure 8).
Concrete structure of the present invention is with embodiment 1 difference:
The craft paper that in paper pulp, adds distortion starch, crylic acid resin synthetic resin, polyvinyl alcohol synthetic resin or other water-soluble synthetic resin.
Said valve port seals the valve port 2 is directly under the edge of the folded upward, mouth width width is about bonding to form a ring structure, the center right and left again folded and glued to form the upper and lower sides of the valve port is approximately double The pocket-type valve port, fold the upper portion of the valve opening wider than the width of ≥ 1mm, on line parts toward the bag, pocket-shaped opening toward the bag outside, away from the left edge of ≥ 1mm line non-bonded area, the remaining ring Part bonded bags catchy, catchy bags and then sealing; wherein the valve orifice shape "
"type or a" U "shaped or"
";
Said leaving apart from the broken line edge >=the non-bonding zone of 1mm, this district is for the elastic force district, under the inside and outside pressure effect of bag, the elastic force district can upspring automatically and outside bag direction move.
Moisture resistance and anti-corrosive properties as to packaging bag have higher requirements, and when the spy was material pH value=3-3.5 fully, material moisture was less than 1% o'clock.Drench film layer of polyethylene film of synthetic resin therein on one deck craft paper surface, or put a polyethylene kind film of synthetic resin bag at kraft paper bag.And, it is had by two places moisture resistance, anti-corrosive properties and permeability to air in its surface punching.
Claims (10)
1. environment-friendly type papery valve port packaging bag comprises the opening that packaging bag bag (1) and packaging bag top are provided with, and opening part is provided with valve port, and said packaging bag bag (1) is to be bonded after being folded by the paper web inward at both ends; It is characterized in that:
Around the inner valve port of packaging bag, be provided with annular seal ring (2); The axial cross section of seal ring (2) is " V " font; The bottom of " V " font is inner towards packaging bag, and a side of seal ring (2) " V " font is adhered to the packaging bag inside face, and another side is mutually bonding with valve port; Valve port is connected through seal ring with packaging bag, and the valve port opening communicates with the packaging bag inner chamber.
2. according to the packaging bag of the described environment-friendly type papery of claim 1 valve port; It is characterized in that: said packaging bag part suitable for reading, its inside of end opening part are provided with lining paper (3); Make said packaging bag bag (1) number of plies be two-layer more than, width≤1mm between the adjacent two layers paper bag.
3. according to claim 1 or 2 described environment-friendly type papery valve port packaging bags; It is characterized in that: offer the ventilative valve opening (5) of pyramid type on the packaging bag bag (1); Valve opening (5) on the bag appearance facial tissue is offered from inside to outside, and promptly the conical bottom face is outside towards packaging bag, and the top is inner towards packaging bag; Valve opening (5) direction on the internal layer paper gasket paper (3) is that ecto-entad is offered, and promptly the conical bottom face of valve opening (5) is inner towards packaging bag, and the top is outside towards packaging bag; Said pyramid type valve opening (5) is self-opening when packing material into, after charging finishes, and pyramid type valve opening auto-closing.
4. according to the packaging bag of the described environment-friendly type papery of claim 3 valve port, it is characterized in that: said packaging bag is a rectangle, one deck triangle or oblong is set respectively in four angles of packaging bag in-to-in strengthens lining paper.
5. according to the packaging bag of the described environment-friendly type papery of claim 1 valve port; It is characterized in that: the bag outside face of packaging bag upper end and lower, bottom end is provided with one deck lid paper (4) respectively; The width of said lid paper (4) is the sack width that is equal to or less than the suitable for reading and end opening of packaging bag; Length is the wrapper less than the packaging bag width, places the packing sack outside suitable for reading and the go to the bottom outside and four limits are bonding tight.
6. according to the packaging bag of the described environment-friendly type papery of claim 1 valve port, it is characterized in that: the opening part that is provided with in packaging bag top, the top of sealing valve port circle (2) are provided with one deck reinforced paper.
7. according to the packaging bag of the described environment-friendly type papery of claim 1 valve port; It is characterized in that: said seal ring (2) is an integral structure with valve port; It is to be in packaging bag in-to-in valve port end outwards to turn down " V " font that forms, and " V " font side after the turnover is adhered to the packaging bag inside face.
8. according to claim 1 or 7 described environment-friendly type papery valve port packaging bags, it is characterized in that: said V " top of font is provided with the non-bonding zone apart from packaging bag inside face or valve port >=1mm, as the elastic force district.
9. according to the packaging bag of the described environment-friendly type papery of claim 1 valve port; It is characterized in that: the wrapper of said packaging bag bag (1) is common craft paper, perhaps in paper pulp, adds the craft paper of distortion starch, crylic acid resin synthetic resin, polyvinyl alcohol synthetic resin or other water-soluble synthetic resin; It has moisture resistance, permeability to air definitely;
Said packaging bag can be used for the can of aerosil and all nanoscales, micron order fine material.
10. according to the packaging bag of the said environment-friendly type papery of claim 1 valve port; It is characterized in that: the packaging bag of said environment-friendly type papery valve port also can be the craft paper surface and drenches film layer of polyethylene synthetic resin film packaging bag, or puts a polyethylene kind film of synthetic resin bag at kraft paper bag; When material pH value=3-3.5, material moisture drenched film layer of polyethylene film of synthetic resin less than 1% o'clock on the craft paper surface, or put a polyethylene kind film of synthetic resin bag at kraft paper bag; And, make it have good ground moisture resistance, anti-corrosive properties and permeability to air in its surface punching;
Said packaging bag can be used for the can of aerosil and all nanoscales, micron order fine material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102620424A CN102372109A (en) | 2010-08-25 | 2010-08-25 | Environmentally-friendly paper valve-port packaging bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102620424A CN102372109A (en) | 2010-08-25 | 2010-08-25 | Environmentally-friendly paper valve-port packaging bag |
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| Publication Number | Publication Date |
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| CN102372109A true CN102372109A (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102620424A Pending CN102372109A (en) | 2010-08-25 | 2010-08-25 | Environmentally-friendly paper valve-port packaging bag |
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| CN (1) | CN102372109A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043924A (en) * | 2016-07-19 | 2016-10-26 | 河南佰嘉新型节能材料有限公司 | Leakproof valve port, packaging bag with valve port and preparation method of packaging bag |
| CN106144171A (en) * | 2016-08-29 | 2016-11-23 | 宜兴威尼特集装袋有限公司 | High barrier valve port paper wrapping bag |
| CN106144167A (en) * | 2016-08-29 | 2016-11-23 | 宜兴威尼特集装袋有限公司 | Stretch-proof high strength paper packaging bag |
| CN106184998A (en) * | 2016-08-29 | 2016-12-07 | 宜兴威尼特集装袋有限公司 | Highly-breathable paper wrapping bag |
| CN108190218A (en) * | 2017-12-04 | 2018-06-22 | 四川新明峰包装科技有限公司 | A kind of packaging bag with lamination valve port |
| CN112342823A (en) * | 2020-10-23 | 2021-02-09 | 广州市佰润文化创意有限公司 | Method for manufacturing degradable packaging bag |
| CN112644876A (en) * | 2019-10-10 | 2021-04-13 | 鸿富锦精密电子（成都）有限公司 | Packaging bag and preparation method thereof |
| CN114772051A (en) * | 2022-04-08 | 2022-07-22 | 董鑫 | High-strength waterproof self-degradation paper bag |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106043924A (en) * | 2016-07-19 | 2016-10-26 | 河南佰嘉新型节能材料有限公司 | Leakproof valve port, packaging bag with valve port and preparation method of packaging bag |
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| CN106144167A (en) * | 2016-08-29 | 2016-11-23 | 宜兴威尼特集装袋有限公司 | Stretch-proof high strength paper packaging bag |
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| CN108190218A (en) * | 2017-12-04 | 2018-06-22 | 四川新明峰包装科技有限公司 | A kind of packaging bag with lamination valve port |
| CN112644876A (en) * | 2019-10-10 | 2021-04-13 | 鸿富锦精密电子（成都）有限公司 | Packaging bag and preparation method thereof |
| CN112342823A (en) * | 2020-10-23 | 2021-02-09 | 广州市佰润文化创意有限公司 | Method for manufacturing degradable packaging bag |
| CN114772051A (en) * | 2022-04-08 | 2022-07-22 | 董鑫 | High-strength waterproof self-degradation paper bag |
| CN114772051B (en) * | 2022-04-08 | 2024-02-20 | 汕头市佳宏纸制品有限公司 | High-strength waterproof self-degrading paper bag |
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