CN1058386C - Wrapped absorbent article structure - Google Patents
Wrapped absorbent article structure Download PDFInfo
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- CN1058386C CN1058386C CN96102729A CN96102729A CN1058386C CN 1058386 C CN1058386 C CN 1058386C CN 96102729 A CN96102729 A CN 96102729A CN 96102729 A CN96102729 A CN 96102729A CN 1058386 C CN1058386 C CN 1058386C
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Abstract
To provide a packaging structure with satisfactory sealing and easy unsealing while making it producible with simple processes by a method wherein delamination processing is applied all over the interior of a packaging material and the packaging material is partially fusion welded with sealing parts having a sealing strength less than a specified value. Delamination processing is applied all over the interior of a packaging material 20 to be used in a packaging structure 1 for a sanitary napkin, and sealing parts 2 and 2' are partially fusion welded in the form of dotting with the packaging material 20 treated with a heated fusion welding device. The sealing strength at the sealing parts 2 and 2' shall be 200g/10mm or below. As the packaging material is treated all over with delamination processing, phase adjustment or the like is not necessary for the packaging material, and thereby production processes can be simplified. As the sealing parts are formed by partial fusion welding, a specified sealing can be achieved without spoiling separability at the sealing parts.
Description
The present invention relates to a kind of packaging structure of absorbent commodity.The present invention be more particularly directed to, such as a kind of absorbent commodity packaging structure of the SANITARY NAPKIN CONSTRUCTION of packing, wherein, the whole surface of packaging material is through lift-off processing, and the hermetic unit of packaging material is easy to open.
Absorbent commodity comprises sanitary towel and so on.In general, sanitary towel has an adhesive layer and is used to be fixed in underwear and prevents its slippage in use.Duration of storage in sanitary towel is stained with its peeling paper of one deck protection on the adhesive layer.But when sanitary towel will be used, peeling paper must be torn and be lost as refuse.It is pretty troublesome handling the peeling paper of being lost as refuse.Have again,, the urinal blocking problem will take place if peeling paper is discarded in the urinal of lavatory.
Therefore, the someone has proposed a kind of packaging structure of sanitary towel, has wherein used the packaging material of inner surface through lift-off processing, and the adhesive layer of sanitary towel is protected under the situation of peeling paper not having.The advantage of this packaging structure is, when sanitary towel is used as refuse when abandoning, packaging material can be bonded on the adhesive layer of sanitary towel, thereby the sanitary towel that abandons as refuse is carried out in the mode of suitable health.
In addition, in the production process of this packaging structure, packaging material are not needed to carry out the cooperation in orientation, so production process is carried out easily.Owing to these reasons, total inner surface is extensive use of through the packaging material of lift-off processing.
But, when using the packaging material of total inner surface process lift-off processing, the problem of heat sealing packaging material has appearred being difficult under common heat seal condition.In order to force to finish heat-sealing, the packaging material heat-sealing can be lived by improving heating-up temperature.But the existing problem of packaging structure of this pressure heat-sealing is, packaging material must be torn when needs are unpacked structure, and like this, packaging material just can not be utilized to handle the sanitary towel as refuse.
The packaging structure that the purpose of this invention is to provide a kind of absorbent commodity, it can be with easy production method manufacturing, and sealing condition is good and opens easily.
In order to address the above problem, the inventor has carried out deep research, find just can realize goal of the invention with such absorbent commodity packaging structure, promptly a kind of absorbent commodity packaging structure, hermetic unit wherein forms the local heat-sealing of packaging material with heat-sealing equipment.
The present invention makes on the basis of this discovery.Specifically, the invention provides a kind of packaging structure of absorbent commodity, the rectangular pack material that comprises an absorbent commodity and an independent packaging absorbent commodity, wherein, adhesive layer be located at absorbent commodity in use not with surface that user contacts on, tearable the turning up the soil of the inner surface of adhesive layer and packaging material sticks together, and by the hermetic unit that is formed by heat-sealing packaging material sealed
This absorbent commodity packaging structure is characterised in that:
The total inner surface of packaging material through lift-off processing and
Hermetic unit is by forming with the local heat sealing packaging material of the sealing intensity that is not more than 200g/10mm.
According to the hermetic unit of absorbent commodity packaging structure of the present invention is that part heat-sealing by packaging material forms.Therefore, even use the packaging material of total inner surface through lift-off processing, the peel property of heat seal lands can not lose yet, thereby can reach the sealing effectiveness of expection.
Can enough simple manufacturing method manufacturings according to absorbent commodity packaging structure of the present invention.And absorbent commodity packaging structure according to the present invention can access suitable sealing condition.In addition, absorbent commodity packaging structure according to the present invention is also opened easily.
Specifically, according to absorbent commodity packaging structure of the present invention, need not to carry out the orientation and cooperate, so production process is simple through lift-off processing in the whole surface of packaging material wherein.In addition, form,, can access the sealing effectiveness of expection so the peel property of hermetic unit can not lose because hermetic unit is part heat-sealing by packaging material.
Fig. 1 is a perspective view, has illustrated a kind of embodiment according to absorbent commodity packaging structure of the present invention, and it has formed the structure of a sanitary towel of packing.
Fig. 2 is a perspective view, has illustrated the basal surface of the sanitary towel in Fig. 1 packaging structure.
Fig. 3 is a perspective view, has illustrated the packaging material of Fig. 1 packaging structure.
Fig. 4 is simple and easy perspective view, has illustrated how sanitary towel is converted into three foldings.
Fig. 5 is simple and easy perspective view, has illustrated how the sanitary towel that is converted into three foldings is packaged in the packaging material.
Fig. 6 is the plane graph that amplifies, and has illustrated the heat seal lands of Fig. 1 packaging structure.
Fig. 7 is a sketch map, and how signal measures heat seal strength.
Fig. 8 is a sketch map, has illustrated major part in the production method of packaged sanitary napkin structure of the present invention.
Fig. 9 is a partial section, has illustrated to form another embodiment of the hermetic unit of packaged sanitary napkin structure of the present invention.
Figure 10 is a perspective view, has illustrated another embodiment according to absorbent commodity packaging structure of the present invention, formation be the packaging structure of a sanitary towel.
Figure 11 is a perspective view, has illustrated the basal surface of the sanitary towel in Figure 10 packaging structure.
Figure 12 is simple and easy perspective view, has illustrated how sanitary towel is converted into three foldings.
Figure 13 is simple and easy sketch map, has illustrated to make the major part (mainly being the feed step) in the method for packaged sanitary napkin structure of the present invention.
Describe the embodiment of absorbent commodity packaging structure of the present invention in detail below in conjunction with accompanying drawing, formed is the packaged sanitary napkin structure.
Fig. 1 is a perspective view, has illustrated a kind of embodiment according to absorbent commodity packaging structure of the present invention, and it has formed the structure of a sanitary towel of packing.Fig. 2 is a perspective view, has illustrated the basal surface of the sanitary towel in Fig. 1 packaging structure.Fig. 3 is a perspective view, has illustrated the packaging material of Fig. 1 packaging structure.Fig. 4 is simple and easy perspective view, has illustrated how sanitary towel is converted into three foldings.Fig. 5 is simple and easy perspective view, has illustrated how the sanitary towel that is converted into three foldings is packaged in the packaging material.Fig. 6 is the plane graph that amplifies, and has illustrated the heat seal lands of Fig. 1 packaging structure.Fig. 7 is a sketch map, and how signal measures heat seal strength.Fig. 8 is a sketch map, has illustrated to pack major part in the production method of sanitary towels that is converted into three foldings continuously with packaging material.
Packaged sanitary napkin structure 1 shown in Figure 1 comprises the rectangular pack material 20 of sanitary towel 10 and independent packaging sanitary towel 10. Adhesive layer 16,16 is located on the surface 12 that sanitary towel 10 in use do not contact with user (hereinafter summary is user contact surface not).Adhesive layer 16, but 16 and the inner surface avulsion of packaging material 20 stick together.And packaging material 20 are sealed by hermetic unit 2,2 and hermetic unit 2 ' that heat-sealing forms.
In detail, as Fig. 1-shown in Figure 5, in above-mentioned packaged sanitary napkin structure 1, sanitary towel 10 is converted into three foldings along the length of sanitary towel 10 being divided into basic three parts the fold line 17,17 that equates, promptly fold anterior 13, middle part 14 and rear portion 15.Specifically, the method that sanitary towel 10 is converted into three foldings is to make rear portion 15 and anterior 13 be folded to the surface 11 at middle part 14 successively, and this surface contacts (hereinafter summary is the user contact surface) in use with user.Then, being converted into three sanitary towels 10 of rolling over is individually wrapped in the packaging material 20.
In addition, packaging material 20 are along its folded lengthwise.On each opposite side 22,22, equitant two-layer being heat sealed in packaging material 20 folding backs forms hermetic unit 2,2 respectively.An end 23 of folding packaging material 20 (promptly, in packaged sanitary napkin material 1, be positioned at sanitary towel 10 directly over, and be positioned at the end of below of another end 24 of folding packaging material 20) with the part heat-sealing near another end 24 of packaging material 20, make another terminal 24 keep not sealed.Like this, formed hermetic unit 2 ', endways near grappling fixture part 3 of 24 formation.When sanitary towel 10 is used, grasp head part 3 by the direction shown in the arrow among Fig. 1, hermetic unit 2 ' is torn, then sanitary towel 10 is taken out from packaged sanitary napkin structure 1.
As Fig. 2 and shown in Figure 4, the sanitary towel 10 that is packaged in the packaging structure of the present invention is common sanitary towels, its user contact surface 11 is made up of liquid-permeable layer, its user not contact surface 12 by the liquid-tight layer and user contact surface 11 and user not the liquid absorber of holding between the contact surface 12 form.
When sanitary towel 10 was used, anterior 13 were positioned at the front side of user.
As shown in Figure 2, adhesive layer 16,16 lays respectively on the front portion 13 and middle part 14 of sanitary towel 10. Adhesive layer 16,16 is bonded on the inner surface of packaging material 20 and is protected.
Form adhesive layer 16,16, can be in user coated with adhesive on the contact surface 12 not.Perhaps, can then the binding agent coat be transferred to user and not form adhesive layer 16,16 on the contact surface 12 by coating adhesive on the packaging material 20 that were subjected to lift-off processing.As the binding agent that forms adhesive layer 16,16, what might be used is the two-phase blocking structure that comprises styrene phase and rubber phase, and the key component that contains is styrenic block polymer, binding agent and softening agent.
The example of styrenic block polymer comprises, styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene isoprene styrene block copolymer (SIS) (SIS), styrene butadiene styrene block copolymer (SBS) (SBS), and styrene-ethylene-propylene-styrene copolymer (SEPS).These styrenic block polymer are block copolymers, and the molecular weight of its styrene part is preferably 7000-20000, and the molecular weight of rubber part is preferably 35000-70000.
The example of binding agent comprises C5 type Petropols, C9 type Petropols, C5/C9 type Petropols, the polyterpene resin of the copolymer of australene, nopinene or dipentene, the hydrogenation products of colophony type resin and these resins.The softening temperature of these binding agents preferably is not less than 80 ℃, and molecular weight is 400-2000.
The example of softening agent comprises technical oil, various plasticizers, polybutene, and liquid resin.The softening temperature of softening agent preferably is not less than 10 ℃, and molecular weight is 200-700.
Especially, has the binding agent of following component preferably as above-mentioned binding agent.
Styrenic block polymer: 100 weight portions
Binding agent: 150-200 weight portion
Softening agent: 30-100 weight portion
In packaged sanitary napkin structure 1 of the present invention, the total inner surface of packaging material 20 was subjected to lift-off processing.As shown in Figure 6, with the local heat-sealing of packaging material 20 point-like, can form hermetic unit 2,2 and hermetic unit 2 ' with heat-sealing equipment.
Any equipment with a plurality of somes shape heaters all can be used as heat-sealing equipment.For example, can use on common heat-sealing equipment and load onto the equipment that a plurality of somes shape heaters are constituted.
Among the present invention, each hermetic unit 2,2 intermediate package material 20 is preferably fallen into the scope between the 10%-50% by the ratio of partially sealed area (that is the ratio of seal point area/hermetic unit area).When resembling this embodiment like this by the local heat-sealing formation of point-like hermetic unit, each some 2a, 2a ... size be preferably 0.1mm-1mm, consecutive points 2a, the distance between the 2a is preferably 1mm-2mm.
Any material all can be used as packaging material 20, and its total inner surface has the advantages that to peel off through lift-off processing.The example of preferred packaging material comprises that thickness is the thin layer of peeling off of 5-50 μ m, by polypropylene, and polyester, polyethylene, polyvinyl alcohol, non-woven fabrics, paper, or two or more composite of these materials forms, and its total inner surface is through lift-off processing.
In the present invention, lift-off processing can be undertaken by apply stripping treatment agent on the total inner surface of packaging material 20, or is undertaken by peeling off to bring on the total inner surface of packaging material 20 is bonding.Silicone resin, fluororesin, octadecylisocyanate etc. are preferably as stripping treatment agent or peel off the release liner component of band.Lift-off processing especially preferably uses silicone resin as the release liner component, forms thin layer by coating, heating and drying or spray operation.
In addition, polyene thin film or mylar can pass through lift-off processing, combine with above-mentioned packaging material by heating, ultrasound wave etc. then.From the angle of producing, the advantage of the packaging material that obtain with the method is that rigidity is moderate, and hermetic unit is opened easily, good heat resistance.
In packaged sanitary napkin structure according to the present invention, the sealing intensity of hermetic unit is not more than 200g/10mm, is preferably 150-20g/10mm.In the present embodiment, sealing intensity is 130g/10mm.
If sealing intensity, is opened difficulty of hermetic unit greater than 200g/10mm, tend to cause packaging material to break, can not be used for handling sanitary towel as refuse.
Sealing intensity is measured with following assay method.
As shown in Figure 7, catch the end of hermetic unit, go up in planar direction (that is, in the direction shown in Fig. 7 arrow) it is torn each other perpendicular to hermetic unit.Measure the intensity when tearing under the following conditions, obtain representing the numerical value of intensity.
(condition determination)
Tension test instrument: Tensilon RTH-100 (Orientec K.K. provides)
Draw speed: 300mm/min.
Draw direction: 180 °
Sealed width: 10mm
The method for optimizing of the packaged sanitary napkin structure 1 of making the present embodiment is described below.
As shown in Figure 8, can finish packaged sanitary napkin structure 1 embodiment by carrying out steps A, B, C, D successively.In steps A, binding agent 16 ' is coated on the continuous sheet 20 ' of packaging material, and its total inner surface has been passed through lift-off processing.Carry sanitary towel 10, and it is cooperated with the coat of binding agent 16 '.Subsequently, binding agent 16 ' coat is transferred in the sanitary towel 10 under pressure.In step B, sanitary towel 10 is converted into three foldings along fold line 17,17.In step D, the continuous sheet 20 ' of FOLD AND PACK material so that its opposed side edges can overlap each other.In step D, the opposed side edges that overlaps each other is formed hermetic unit 2 ' by partially sealed then.Subsequently, along the upstream extremity of contiguous sanitary towel 10 and the line cutting packaging material of downstream.Each end that is cut of partially sealed packaging material forms hermetic unit 2,2.
In the embodiment in conjunction with Fig. 1-8 description, single adhesive layer 16 is located at respectively on front portion 13 and the middle part 14 in the above.But absorbent commodity packaging structure according to the present invention is not limited to this a kind of structure.For example, for the quantity of adhesive layer and shape all without limits, forwardly 13 and middle part 14 on can enclose two or more adhesive layers respectively.In addition, sanitary towel can be provided with flank.
As shown in Figure 9, hermetic unit can be with having needle- like heater 30,30 ... the partially sealed formation of heat-sealing equipment.Like this, form hole at hermetic unit, the area around each hole is what seal.When part heat-sealing is with having needle- like heater 30,30 ... heat-sealing equipment when finishing, in each sealing office, packaging material 20 are preferably fallen in the described scope of embodiment shown in above-mentioned Fig. 1-8 by the shared ratio of partially sealed area.
In addition, be not limited to above-mentioned form at " local heat-sealing " of hermetic unit, as long as this part, also can adopt linear local the heat-sealing by partially sealed.For local linear sealing, but without stint adopts any traditional linear sealing technology.In this case, this line preferable width is 1-3mm.
Particularly preferably be, packaging structure of the present invention is at hermetic unit 2,2 ' open after, packaging material 20 can not be torn.
Particularly, packaging structure preferably of the present invention is after hermetic unit is opened, and the part of packaging material except that hermetic unit can not be torn, and that part of formation hermetic unit is not torn basically in packaging material.The implication that " is not torn basically " is that the packaging material that form hermetic unit can be torn or be torn when opening hermetic unit by the stress that acts on heat seal lands.When forming by point format when partially sealed, the situation (promptly only heat seal lands moves and be bonded at the state of appropriate section) of some partial loss of hermetic unit may often take place.The implication that " is not torn basically " is not suitable for this situation.
In other words, when hermetic unit 2,2 ' when being opened, if packaging material 20 are easy to be torn, tear or elongate, some structures and can not pack exhausted absorbent commodity problem such as to throw aside with packaging material 20 of being difficult to unpack can take place then.Particularly, the situation of tearing with the other parts except that hermetic unit is different, when the packaging material itself that form hermetic unit are torn, will cause the damage of whole packaging material.In addition, owing to form the packaging material hardening of hermetic unit, also can produce the problem that the packaging material efflorescence becomes broken end.Therefore, preferably the formation of packaging structure of the present invention does not produce following problem, promptly when opening hermetic unit owing to the packaging material that form hermetic unit can not be separated, thereby the problem that the packaging material that cause packaging material (part except that hermetic unit) to tear or tear and form hermetic unit tear.
As mentioned above, packaging material when unpacking structure (part beyond hermetic unit and the hermetic unit) can not tear a kind of like this packaging structure preferably to be passed through, for example, the tearing strength of packaging material, overall bulk softness (bulk softness) and the Intensity Design of taking out absorbent commodity from packaging material are become to fall into scope as described below.
That is in packaging structure of the present invention, the tearing strength of packaging material preferably is not less than 50g, more preferably is not less than 100g, especially preferably is not less than 150g, most preferably is not less than 200g.The overall bulk softness of packaging material preferably is no more than 30g/15mm, more preferably no more than 20g/15mm, be most preferably not exceeding 17g/15mm.Though overall bulk softness is not had lower bound,, then packaging material can be felt that it is bonded on hand in hand held if it is 3 or lower.Therefore, overall bulk softness is preferably greater than 3.In addition, take out intensity and preferably be no more than 40g/20mm, more preferably 10-30g/20mm.
When tearing strength during less than 50g, when opening hermetic unit may through regular meeting take place undesirable packaging material elongation, break or be out of shape.
For making packaging material use good hand touch and being in the state of hope, packaging material need pliability.Packaging material are soft more, and just suitable more light more when it is opened, packaging material are hard more, then loud more and more difficult the opening of the sound when opening.When overall bulk softness surpassed 30g/15mm, packaging material became and can not open, and the result must apply bigger power, thereby causes the breakage of packaging material.In addition and since produce the sensation of embrittlement and bigger sound (when its open and by rolling when throwing aside), often can not cosily use.
Considering opening action and peel off absorbent commodity from packaging material is successive with its taking-up, and some user often carry out opening action simultaneously when portions of packaging material is opened and taking-up is moved, and therefore needs to consider taking-up intensity.When taking out intensity above 40g/20mm, the action that can not successfully take out absorbent commodity, the result often causes the damage of packaging material.
Determine tearing strength, overall bulk softness and taking-up intensity under the following conditions.1, tearing strength
Packaging material are cut into 60 * 30mm so that form long axis direction, carve the length of opening (incision) 30mm along the direction that is parallel to long limit, obtain test piece thus at the center of a minor face perpendicular to the direction (being the horizontal direction of packaging material 20) of hermetic unit 2.Subsequently, draw two limits of the long axis direction of test piece round about.Measure when incising stress when tearing as tearing strength.
Tension test instrument: Tensilon tension test instrument
Rate of extension: 300mm/min2, overall bulk softness
Obtain test piece from the packaging material sampling, the test piece size is 100mm * 15mm (100mm should take from the long axis direction of packaging material).Test piece is rolled into simple shape (volume) so that the X direction of 15mm width forms short transverse.By safety pin with the upper and lower in curling overlay region (wide for 10mm) fix, obtain measuring samples.The measuring samples that obtains is measured bending strength from the short transverse pressurization under following condition, the value that records is pliability as a whole.
Tension test instrument: Tensilon tension test instrument
(under pattern of pressure, using)
Compression speed: 10mm/min3, article take out intensity
With packaging material 20 whole opening, the inboard adherent part of adhesive layer 16 and packaging material 20 is downcut from absorbent commodity, packaging material 20 are stick on top still.Obtain test piece by this way, promptly the backsheet of packaging material 20 and absorbent commodity is bonded together with condition shown in Figure 7.Subsequently, the bar that test piece is cut into wide 20mm obtains the measurement sample, and its direction of delaminate forms long axis direction.For the measuring samples that so obtains, the marginal portion of backsheet and the marginal portion of packaging material are clipped together, and each marginal portion that on direction as shown in Figure 7, stretches.Measure the stress when the two edges part is peeled off, as taking out speed.
Tension test instrument: Tensilon tension test instrument
Rate of extension: 300mm/min
Draw direction: 180 °
Be necessary the sealing intensity of hermetic unit is fallen into above-mentioned scope, but because lower sealing intensity is better, so the sealing intensity of hermetic unit can be reduced as much as possible, and, can set up another additional Sealing Device in order to prevent unexpected in this case opening.Particularly, the hermetic unit 2 ' on two opposite side of the long axis direction of packaging material is optional, and available additional Sealing Device replaces hermetic unit 2 '.The bonding strength of additional Sealing Device preferably is not less than 10g/mm, more preferably 20-80g/mm.Be in this scope and can make bonding firm also unlatching easily.
The example of additional Sealing Device except that by heat-sealing or binding agent bonding, most preferably also comprise with one and can repeat adherent vertical band (tab tape) replacement hermetic unit 2 ', because can be more convenient with opening that facility uses with it.Can use any traditional vertical band by without stint.
That is packaging structure of the present invention can not contain hermetic unit 2 ', the opposite side 24 of the long axis direction of packaging material 20 can with one can repeat adherent vertical band sealing.
In addition, the packaging structure of above-mentioned embodiment has satisfied tearing strength, overall bulk softness and taking-up intensity and has fallen into above-mentioned scope.
Below in conjunction with Figure 10, another embodiment of 11,12 and 13 explanations absorbent commodity packaging structure of the present invention, what it formed is the packaged sanitary napkin structure.
Figure 10 is a perspective view, has illustrated that it is the packaging structure of a sanitary towel according to another embodiment of absorbent commodity packaging structure of the present invention.Figure 11 is a perspective view, has illustrated the basal surface of the sanitary towel in Figure 10 packaging structure.Figure 12 is simple and easy perspective view, and how signal sanitary towel is converted into three foldings.Figure 13 is a sketch map, the major part (mainly being the feed step) in the method for signal production packaged sanitary napkin structure of the present invention.
Repeat no more with the common feature of embodiment shown in Fig. 1-8, the respective description among Fig. 1-8 is applicable to the embodiment shown in Figure 10-13.
Packaged sanitary napkin structure 1 shown in Figure 10,11,12 and 13 comprises the rectangular pack material 20 of sanitary towel 10 and independent packaging sanitary towel 10.Adhesive layer 16 is located at the surface 12 that sanitary towel 10 does not contact with user.Tearable the turning up the soil of the inner surface of adhesive layer 16 and packaging material 20 sticks together.In addition, the some parts of packaging material 20 is heat-sealed, thereby forms hermetic unit 2,2 and hermetic unit 2 ' in packaged sanitary napkin structure 1.
In this packaged sanitary napkin structure 1, packaging material 20 contact with the whole area that sanitary towel 10 does not contact the surface 12 of user.With the sanitary towel 10 and packaging material 20 of packaging material 20 contacts, be divided into three parts the fold line 17,17 that approximately equates to be converted into three foldings along length with sanitary towel 10, be converted into front portion 13 in other words, middle part 14 and rear portion 15.Specifically, the fold sequence of sanitary towel 10 is surfaces that do not contact with user 11 that rear portion 15 and anterior 13 is folded to middle part 14.At each opposed side edges 22,22 place, be folded into the packaging material 20 that overlap each other and be heat-sealed, form each hermetic unit 2,2 thus.In addition, the part heat-sealing of the part below that is folded to adjacent end 23 of the part of packaging material 20 adjacent end 23 that folding and packaging material 20, terminal like this 23 maintenances are not sealed.Form hermetic unit 2 ' in this way, and 23 next doors form a grappling fixture 3 endways.
As shown in figure 11, be packaged in the adhesive layer 16 that sanitary towel 10 in the packaging structure of the present invention is provided with strip.Adhesive layer 16 extends user not on the almost whole area of contact surface 12 (comprise anterior 13, middle part 14 and rear portion 15).The whole area of adhesive layer 16 is bonded on the inner surface of packaging material 20, is protected thus.
When sanitary towel is used, grasp head part 3 along the direction shown in the arrow among Figure 10, hermetic unit 2 ' is torn, from packaged sanitary napkin structure 1, sanitary towel 10 is taken out then.
The following describes the method for optimizing of this embodiment of making packaged sanitary napkin structure 1.This embodiment of packaged sanitary napkin structure 1 can easily be made by feed step and packaging step.Shown in Figure 12 and 13, in the feed step, from the continuous sheet 20 ' of sheet material roller supply packaging material 20, continuous sheet 20 ' has a whole area and has passed through the surface 21 ' of lift-off processing.Make the surface 21 ' of continuous sheet 20 ' and the surface that does not contact user 12 contacts of the sanitary towel's primary product 10 ' that do not have adhesive layer 16.Then at precalculated position cutting continuous sheet 20 '.In packaging step, sanitary towel's primary product 10 ' are folded along fold line 17,17 with packaging material 20, at preposition sealing and packing material 20.The feed step comprises the step of an application of adhesive.In the binding agent coating step, just at the user of continuous sheet 20 ' and sanitary towel primary product 10 ' before contact surface 12 does not contact, binding agent 16 ' is applied to the precalculated position on surface 21 '.Subsequently, binding agent 16 ' is transferred to formation adhesive layer 16 in the sanitary towel 10.
Specifically, as shown in figure 13, in the feed step, form the continuous sheet 10 of sanitary towel's primary product 10 ' " compressed by roller 50; be cut into required shape then, obtain sanitary towel's primary product 10 ' (that is the primary product of sanitary towel 10 before adding adhesive layer 16).Required shape is according to the purposes (for example, slim or night using type) of sanitary towel and decide.
Then, continuous sheet 20 ' is from sheet material roller output, with the user of sanitary towel primary product 10 ' not contact surface 12 contact, it is supplied with on y direction with roller 51.Then in the cutting of the precalculated position of continuous sheet 20 '.The precalculated position of cutting on continuous sheet 20 ' can be selected arbitrarily, as long as the user that the size of the packaging material 20 of gained can cover sanitary towel's primary product 10 ' is the whole area of contact surface 12 (that is, as long as packaging material 20 two end portions in the vertical reaches the outside of sanitary towel 10 two end portions in the vertical respectively) not.
As shown in figure 12, in packaging step, sanitary towel's primary product 10 ' are converted into three foldings with packaging material 20 along two fold lines 17,17.Specifically, the fold sequence of sanitary towel's primary product 10 ' is that rear portion 15 and anterior 13 is folded to middle part 14.In addition, the relative side 22,22 and the end 23 of packaging material 20 are heat-sealed.
The feed step comprises the binding agent coating step.In the binding agent coating step, utilize binding agent coating unit 40, binding agent 16 ' is applied to continuous sheet 20 ' on the precalculated position on the surface 21 ' of lift-off processing.
Surface 21 ' is gone up the precalculated position of application of adhesive 16 ' and can at random be selected according to the shape of the size of the purposes of sanitary towel, packaging material, adhesive layer, when as long as the sanitary towel's primary product 10 ' that are transferred to adhesive layer 16 ' go up, can form the adhesive layer 16 of required shape in the precalculated position of sanitary towel.In this embodiment, rectangle binding agent 16 ' is coated on the continuous sheet 20 ' with certain interval continuously.
Contact coating unit, contactless coating unit or the like all can be used as binding agent coating unit 40.
Application of adhesive 16 ' is to carry out before continuous sheet 20 ' will contact with sanitary towel 10.The coating of binding agent 16 ' preferably will contact with each other before at continuous sheet 20 ' with sanitary towel 10, and 0.1-2 carried out during second.The application temperature of binding agent can be different and different according to the kind of binding agent, are preferably 80-150 ℃.
Absorbent commodity packaging structure of the present invention is not limited to above-mentioned embodiment, can be presented as other various forms under the situation of not leaving the spirit and scope of the present invention.
In addition, the method for manufacturing packaged sanitary napkin structure is not limited to the method shown in method shown in Figure 8 and Figure 12 and 13.For example, in forming the process of adhesive layer, binding agent is not coated in the inner surface of packaging material, but the user that binding agent directly is coated in sanitary towel contact surface not.
Claims (3)
1, a kind of absorbent commodity packaging structure, the rectangular pack material that comprises an absorbent commodity and an independent packaging absorbent commodity, wherein, adhesive layer be located at absorbent commodity in use not with surface that user contacts on, tearable the turning up the soil of the inner surface of adhesive layer and packaging material sticks together, the hermetic unit sealing of packaging material by forming by heat-sealing
This absorbent commodity packaging structure is characterised in that:
The total inner surface of packaging material through lift-off processing and
Hermetic unit is by forming with the local heat sealing packaging material of the sealing intensity that is not more than 200g/10mm.
2, absorbent commodity packaging structure as claimed in claim 1, hermetic unit wherein is by forming packaging material with heat-sealing equipment with the local heat-sealing of point-like.
3, absorbent commodity packaging structure as claimed in claim 1, hermetic unit wherein are by with the heat-sealing equipment that has the needle-like heater the local heat-sealing of packaging material being formed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP70133/1995 | 1995-03-28 | ||
| JP1331995 | 1995-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1137015A CN1137015A (en) | 1996-12-04 |
| CN1058386C true CN1058386C (en) | 2000-11-15 |
Family
ID=11829855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96102729A Expired - Lifetime CN1058386C (en) | 1995-03-28 | 1996-03-28 | Wrapped absorbent article structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1058386C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070086683A1 (en) * | 2005-10-18 | 2007-04-19 | Yeager James W | Package having recloseable pour spout |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3973567A (en) * | 1975-05-19 | 1976-08-10 | Personal Products Company | Wrapped sanitary napkins |
| US4564108A (en) * | 1983-06-14 | 1986-01-14 | Molnlycke Ab | Package for sanitary napkins |
| WO1991018574A1 (en) * | 1990-06-05 | 1991-12-12 | The Procter & Gamble Company | C-fold releasable wrapper |
| EP0472376A1 (en) * | 1990-08-17 | 1992-02-26 | McNEIL-PPC, INC. | Absorbent articles with integral release system and methods of making same |
| GB2273279A (en) * | 1992-12-10 | 1994-06-15 | Kao Corp | Wrapping structure for sanitary napkin |
-
1996
- 1996-03-28 CN CN96102729A patent/CN1058386C/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3973567A (en) * | 1975-05-19 | 1976-08-10 | Personal Products Company | Wrapped sanitary napkins |
| US4564108A (en) * | 1983-06-14 | 1986-01-14 | Molnlycke Ab | Package for sanitary napkins |
| WO1991018574A1 (en) * | 1990-06-05 | 1991-12-12 | The Procter & Gamble Company | C-fold releasable wrapper |
| EP0472376A1 (en) * | 1990-08-17 | 1992-02-26 | McNEIL-PPC, INC. | Absorbent articles with integral release system and methods of making same |
| GB2273279A (en) * | 1992-12-10 | 1994-06-15 | Kao Corp | Wrapping structure for sanitary napkin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1137015A (en) | 1996-12-04 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| EXPY | Termination of patent right or utility model |