CN208359614U - A kind of breathable composite film - Google Patents
A kind of breathable composite film Download PDFInfo
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- CN208359614U CN208359614U CN201820623961.1U CN201820623961U CN208359614U CN 208359614 U CN208359614 U CN 208359614U CN 201820623961 U CN201820623961 U CN 201820623961U CN 208359614 U CN208359614 U CN 208359614U
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- woven fabrics
- liquid
- hydrophily
- composite film
- film
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Abstract
The utility model discloses a kind of breathable composite film, which includes the hydrophily PP film containing hydrophilic group, the hydrophily PE film containing hydrophilic group, the non-woven fabrics being process by PP fiber with composite fibre mixing hot wind being arranged from top to bottom；The composite fibre is skin-core structure, and the composite fibre includes the skin zone of the core of PP fibrous material and the PE fibrous material being wrapped in outside core, solves the problems, such as that non-woven fabrics caused flexibility in composite isolated film is deteriorated.
Description
Technical field
The utility model relates to a kind of breathable composite films.
Background technique
Non-woven fabrics is a kind of non-woven cloth, it is directly to pass through air-flow using high polymer slice, staple fiber or filament fiber
Or mechanical networking, it is then reinforced by spun lacing, needle thorn, hot wind or hot rolling, the non-woven cloth finally formed by final finishing.
Hot-wind nonwoven cloth has the characteristics that fluffy, soft, elasticity is good and warmth retention property is strong, but its low strength, easily deformable, is suitable for using
Abandon the manufacture of product, such as baby' diaper, adult incontinent pads and women sanitary articles.
When using non-woven fabrics as the fabric of baby' diaper, adult incontinent pads and women sanitary articles, due to non-woven fabrics and position
Have the features such as fluffy, soft, easily deformable in the absorptive core (including toilet paper) of its lower layer, both exist mix it is miscellaneous together
A possibility that, cause the two that cannot respectively play its effect.To solve the above problems, the prior art is generally in the bottom of non-woven fabrics
By one layer of ventilative isolation film of adhesive bonding, so that non-woven fabrics and absorptive core can independent performance effects.
It is in place of the deficiencies in the prior art, isolation film and non-woven fabrics is bonded by adhesive, influence the soft of non-woven fabrics
It is soft, reduce experience sense.
Utility model content
The purpose of the utility model is to provide a kind of breathable composite films, and it is caused soft in composite isolated film to solve non-woven fabrics
The problem of soft variation.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of breathable composite film, including be arranged from top to bottom the hydrophily PP film containing hydrophilic group, contain hydrophilic group
Hydrophily PE film, the non-woven fabrics that is process by PP fiber with composite fibre mixing hot wind；Composite fibre is skin-core structure,
Composite fibre includes the skin zone of the core of PP fibrous material and the PE fibrous material being wrapped in outside core.
After fiber combing, fiber is penetrated using the hot wind on drying plant, is allowed to nothing that is heated and being able to bonding production
Woven fabric.Skin zone's (PE fibrous material) on composite fibre is low-melting component, in the processing of non-woven fabrics thermal bonding, the low melting point group
It is divided into spot bonding form, it may be assumed that skin zone forms melting adhesion on the crosspoint of fiber, and after cooling down, the fiber of non crossover point
Still keep original state.Compared with the form of area's bonding, the fluffy degree for the non-woven fabrics that this spot bonding form obtains and soft
It is soft more preferable.
Hydrophily PE film and hydrophily PP film, hydrophily PE film and hydrophily are set gradually in the side of non-woven fabrics
PP film can play the role of preferably isolation and moulding, and wherein hydrophily PP film plays main function and hydrophily PE film rises
To booster action.Meanwhile utilizing hydrophily PE the film low softening point of itself and itself and hydrophily PP film, nothing after the heating
The structural similarity of woven fabric, by pressure sintering by hydrophily PP film, hydrophily PE film together with non-woven fabric compounded, substitution
The use of adhesive, greatly improves flexibility, keeps excellent experience sense.
In use, liquid is penetrated into from the upper surface of non-woven fabrics, non-woven fabrics, hydrophily PE film and hydrophily PP are passed sequentially through
Film plays preferable drain and permeation functions, and leads since the structure between adjacent layer is similar so can keep excellent
Liquid and permeation functions solve the problems, such as that gas permeability caused by the additional addition of adhesive and liquid permeability are deteriorated.
Further preferably are as follows: the core and the skin zone are in eccentric position.
Using the above structure, eccentric skin-core structure assigns fibre three-dimensional crimp property, improves fiber fluffy.
Further preferably are as follows: the thickness of hydrophily PE film and hydrophily PP film is respectively 0.01mm and 0.03mm, nothing
The specification of woven fabric is 60g/m2。
Using the above structure, the thickness of hydrophily PE film is too small, then the hot pressing between non-woven fabrics and hydrophily PP film
Bonding effect is poor；The thickness of hydrophily PE film is excessive, then the flexibility of non-woven fabrics is deteriorated；The thickness mistake of hydrophily PP film
Small, then moulding effect is deteriorated；The thickness of hydrophily PP film is excessive, then the flexibility of non-woven fabrics is deteriorated；The grammes per square metre mistake of non-woven fabrics
Greatly, then overstocked, influence fluffy sense；The grammes per square metre of non-woven fabrics is too small, then influences the manufacture craft of non-woven fabrics；The grammes per square metre of non-woven fabrics also by
The type and thickness effect of the film of one side can balance flexibility, moulding effect and fluffy sense using the setting of the application.
Further preferably are as follows: multiple liquid-passing holes are offered on the non-woven fabrics, the liquid-passing hole runs through the upper table of non-woven fabrics
Face and the setting of the lower surface of non-woven fabrics.
Using the above structure, in the identical situation of grammes per square metre, compared with non-apertured nonwoven cloth ratio, apertured nonwoven is furnished with following
Advantage: 1. three-dimensional thickness increases, and solid sense is more preferable, more soft；2. liquid or excreta can rapidly be penetrated by liquid-passing hole,
Improve seepage velocity；3. skin contact area is smaller, and gas permeability is more preferable due to there is open-celled structure；4. more dry in conjunction with 2. and 3.
It is refreshing.
Further preferably are as follows: on from the upper surface of non-woven fabrics to the direction of the lower surface of non-woven fabrics, the hole of the liquid-passing hole
Diameter is gradually reduced.
Using the above structure, when thering is liquid and excreta to flow into above non-woven fabrics, under pressure, liquid and excretion
Object can quickly be entered below non-woven fabrics by liquid-passing hole, and preferable drain is played the role of；Lower section positioned at non-woven fabrics is (as absorbed
Core) have liquid in the presence of, since the opening of liquid-passing hole lower end is smaller, the back permeability of liquid can be improved.
Further preferably are as follows: on from the upper surface of non-woven fabrics to the direction of the lower surface of non-woven fabrics, the liquid-passing hole is to fall
Set cone or inverted round table shape.
Using the above structure, when liquid-passing hole is inverted conical, back permeability can greatly be improved；And liquid-passing hole is to be inverted circle
When mesa-shaped, preferable liquid and excreta percent of pass can be kept, can be arranged according to demand.
Further preferably are as follows: the percent opening of the non-woven fabrics is 30%.
Using the above structure, permeability and gas permeability are improved.
Further preferably are as follows: the upper surface of the non-woven fabrics is provided with diversion trench to lower recess, the diversion trench and described
Liquid-passing hole connection setting.
Using the above structure, liquid-passing hole can be imported for liquid by diversion trench at liquid-passing hole by not opening up on non-woven fabrics upper surface
Logical liquid speed degree and logical liquid measure improve in place.
Further preferably are as follows: on from the upper surface of non-woven fabrics to the direction of the lower surface of non-woven fabrics, the diversion trench is to fall
It sets round table-like；The diversion trench and liquid-passing hole concentric setting.
Using the above structure, it can be pierced by the needle that two rotary tables or one circular cone of a rotary table are formed by stacking, a step completes punching
With the technique for beating slot, production efficiency is improved.
In conclusion the utility model has the following beneficial effects:
Soft, fluffy, ventilative, transparent liquid, experience sense are good.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of embodiment；
Fig. 2 is the complex structure of filament schematic diagram of embodiment.
In figure, 1, non-woven fabrics；2, hydrophily PE film；3, hydrophily PP film；4, liquid-passing hole；5, diversion trench；6, core；
7, skin zone.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as within the protection scope of the present utility model all by the protection of Patent Law.
Embodiment: a kind of breathable composite film, referring to Fig.1, including set gradually from top to bottom non-woven fabrics 1, containing hydrophilic
The hydrophily PE film 2 of base and hydrophily PP film 3 containing hydrophilic group.The specification of non-woven fabrics 1 is 60g/m2.Contain hydrophilic group
Hydrophily PE film 2 and the thickness of the hydrophily PP film 3 containing hydrophilic group be respectively 0.01mm and 0.03mm.
Multiple liquid-passing holes 4 are offered on non-woven fabrics 1, liquid-passing hole 4 is through the upper surface of non-woven fabrics 1 and the lower surface of non-woven fabrics
Setting.The percent opening of non-woven fabrics 1 is 30%.On from the upper surface of non-woven fabrics 1 to the direction of the lower surface of non-woven fabrics 1, liquid-passing hole 4
Decreasing pore size, generally set inverted conical or inverted round table shape for liquid-passing hole 4.
The upper surface of non-woven fabrics 1 is provided with diversion trench 5 to lower recess, and diversion trench 5 is connected to setting with liquid-passing hole 4.From nonwoven
On the upper surface of cloth 1 to the direction of the lower surface of non-woven fabrics 1, diversion trench 5 is inverted round table shape.Diversion trench 5 and liquid-passing hole 4 are the same as circle
Heart setting, the aperture of 5 upper surface of diversion trench are greater than the aperture of 4 upper surface of liquid-passing hole.
Non-woven fabrics 1 is process by PP fiber with composite fibre mixing hot wind.In the present embodiment, PP fiber with it is compound
The mixing ratio of fiber is 95:5(dry weight).Referring to Fig. 2, composite fibre is skin-core structure, and composite fibre includes PP fibrous material
The skin zone 7 of core 6 and the PE fibrous material being wrapped in outside core 6.Core 6 and skin zone 7 are in eccentric position.
Preparation process:
(1) preparation of non-woven fabrics
After fiber combing, fiber is penetrated using the hot wind on drying plant, is allowed to nothing that is heated and being able to bonding production
Woven fabric.Skin zone's (PE fibrous material) on composite fibre is low-melting component, in the processing of non-woven fabrics thermal bonding, the low melting point group
It is divided into spot bonding form, it may be assumed that skin zone forms melting adhesion on the crosspoint of fiber, and after cooling down, the fiber of non crossover point
Still keep original state.Compared with the form of area's bonding, the fluffy degree for the non-woven fabrics that this spot bonding form obtains and soft
It is soft more preferable.
Then non-woven fabrics is sent into punch device, under the action of perforated roll, forms liquid-passing hole and diversion trench.
(2) non-woven fabrics and polymeric membrane is compound
It is sequentially placed hydrophily PE film and hydrophily PP film in the side of non-woven fabrics, by pressure sintering by hydrophily PP
Film, hydrophily PE film substitute the use of adhesive together with non-woven fabric compounded, greatly improve flexibility, keep excellent
Good experience sense.
Claims (9)
1. a kind of breathable composite film, which is characterized in that including the hydrophily PP film containing hydrophilic group being arranged from top to bottom
(3), the hydrophily PE film (2) containing hydrophilic group, the non-woven fabrics being process by PP fiber with composite fibre mixing hot wind
(1)；Composite fibre is skin-core structure, and composite fibre includes the core (6) of PP fibrous material and to be wrapped in the PE of core (6) outside fine
Tie up the skin zone (7) of material.
2. a kind of breathable composite film according to claim 1, which is characterized in that at the core (6) and the skin zone (7)
In eccentric position.
3. a kind of breathable composite film according to claim 2, which is characterized in that hydrophily PE film (2) and hydrophily PP
The thickness of film (3) is respectively 0.01mm and 0.03mm, and the specification of non-woven fabrics (1) is 60g/m2。
4. a kind of breathable composite film according to claim 3, which is characterized in that offer multiple logical liquid on non-woven fabrics (1)
Hole (4), the liquid-passing hole (4) is through the upper surface of non-woven fabrics (1) and the lower surface setting of non-woven fabrics (1).
5. a kind of breathable composite film according to claim 4, which is characterized in that from the upper surface of non-woven fabrics (1) to nonwoven
On the direction of the lower surface of cloth (1), the decreasing pore size of the liquid-passing hole (4).
6. a kind of breathable composite film according to claim 4, which is characterized in that from the upper surface of non-woven fabrics (1) to nonwoven
On the direction of the lower surface of cloth (1), the liquid-passing hole (4) is inverted conical or inverted round table shape.
7. a kind of breathable composite film according to claim 6, which is characterized in that the percent opening of the non-woven fabrics (1) is
30%。
8. a kind of breathable composite film according to claim 7, which is characterized in that the upper surface of non-woven fabrics (1) is to lower recess
It is provided with diversion trench (5), the diversion trench (5) is connected to setting with the liquid-passing hole (4).
9. a kind of breathable composite film according to claim 8, which is characterized in that from the upper surface of non-woven fabrics (1) to nonwoven
On the direction of the lower surface of cloth (1), the diversion trench (5) is inverted round table shape；The diversion trench (5) and the liquid-passing hole (4)
Concentric setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820623961.1U CN208359614U (en) | 2018-04-28 | 2018-04-28 | A kind of breathable composite film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820623961.1U CN208359614U (en) | 2018-04-28 | 2018-04-28 | A kind of breathable composite film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208359614U true CN208359614U (en) | 2019-01-11 |
Family
ID=64933021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820623961.1U Active CN208359614U (en) | 2018-04-28 | 2018-04-28 | A kind of breathable composite film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208359614U (en) |
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2018
- 2018-04-28 CN CN201820623961.1U patent/CN208359614U/en active Active
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