CN1875899A - Secondary mesh combined plastic punched film and method for making same - Google Patents
Secondary mesh combined plastic punched film and method for making same Download PDFInfo
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- CN1875899A CN1875899A CN 200610092425 CN200610092425A CN1875899A CN 1875899 A CN1875899 A CN 1875899A CN 200610092425 CN200610092425 CN 200610092425 CN 200610092425 A CN200610092425 A CN 200610092425A CN 1875899 A CN1875899 A CN 1875899A
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Abstract
The invention relates the twice mesh combined type plastic making hole film and preparing method. The method comprises the following steps: using mono-layer plastic foil as base material, carrying out twice mono-layer technology, forming the small hole in the first making holes technology, and forming big hole in the second making holes technology. The diameter of small hole is less than the half of the big hole, the perforated density of small hole is 170-500 holes/cm2, the perforated density of big hole is 30-150 holes/cm2; the perforated rate of small hole is 10-35%, and the perforated rate of big hole is 10-32%. The twice making hole uses vacuum making hole and mechanical making hole. The invention has the advantages of good air permeability, penetrability, softness and three-dimension effect.
Description
Technical field
The present invention relates to sanltary towel, sanitary pad, adult loses use in the hygienic article such as flap trousers, baby diaper a kind of and has making hole film (being sanitary upper material) and the production method thereof that absorbs the human body discharge liquor, being specifically related to a kind of is base material with the single layer plastics films, by the secondary drilling technology big mesh and little mesh are made up, thereby obtain plastic punched film of special-effect and preparation method thereof.
Background technology
Making hole film (also claim " sanitary upper material ") loses hygienic article such as flap trousers, baby diaper as sanltary towel, sanitary pad, adult basic lining uses in absorbent commodities such as in the past sanitary towel, disposable diaper, urine pad, short underpants liner in a large number.Making hole film can be divided into two kinds of composite punched membrane and monolayer plastic making hole films by material character, and the monolayer plastic making hole film is a base material with PE (polyethylene) or PP plastic sheetings such as (polypropylene) generally, forms the mesh type lining by punching on base material.In order to improve the plastic punched film performance, past people is mainly improved from the mesh design aspect, so occurred the plastic punched film of a large amount of different passes on the market.From the mesh pass, these making hole films can be divided into the single-orifice type wire side and porous type makes up two kinds of wire sides, such as the single-orifice type making hole film product that is provided by Suzhou sister's hygienic articles (Suzhou) company limited pentagon among the thin hexagon of HW, the PN, PT pentagon, the narrow wall pentagon of PSB, HR hexagon and PHB embossment shape etc. are just arranged, porous type combination making hole film product has the quartzy little pentagon of CV, HF is quincunx etc.Yet, weigh from technology and performance two aspects, we can say that single-orifice type making hole film and porous type combination making hole film cuts both ways, but understand according to the applicant, all monolayer plastic making hole films all are the molding of once punching at present, and the drilling method that adopts mainly is one of following three kinds: first kind is directly to utilize the casting films of molten condition to roll the cylinder type cylinder mould that pile warp is crossed a uniform mesh in surface, from medial surface mesh is produced the high strength negative pressure by vacuum slot, force film breaks to form and the corresponding hole shape of mesh; Second kind is with solid-state casting films thermoplastic, utilizes above-mentioned cylinder mould and vacuum slot to produce the high strength negative pressure then and punches; The third is that solid-state casting films is directly carried out mechanical punching, thereby forms making hole film.Although the extensive use in hygienic article of above-mentioned existing monolayer plastic making hole film, still have the following disadvantages with regard to its function and performance: 1, breathability and permeance property are poor; 2, plastic sense is too strong, and the third dimension deficiency; 3, elasticity and pliability are not enough; 4, comfortableness is not enough etc.
Along with growth in the living standard, people are also more and more higher to the requirement of sanitary upper material, therefore, how to design and develop a kind of function and function admirable, use the plastic punched film sanitary upper material comfortable, that emulation is strong, are the problems that those skilled in the art extremely pay close attention to.
Summary of the invention
The invention provides a kind of secondary mesh combined plastic punched film and preparation method thereof, its objective is and to solve existing ubiquitous function of plastic punched film and performance deficiency problem, thereby obtain a kind of breathability and good penetrability, it is good to give elasticity and pliability, the emulation sex hygiene lining that third dimension is strong and comfortable.
For achieving the above object, the technical scheme that plastic punched film of the present invention adopts is: a kind of secondary mesh combined plastic punched film, form by the punching of single layer plastics films base material, wire side is made of once little mesh and the big mesh stack of secondary, wherein: once little mesh is the uniform fine-structure mesh of the molding of punching for the first time, and the big mesh of secondary is the uniform large-meshed net of the molding of punching for the second time; 1/2 of the aperture of little mesh≤big mesh aperture; The perforate density of little mesh be 170～500 holes/centimetre
2, the hole density of big mesh be 30～150 holes/centimetre
2The percent opening of little mesh is 10～35%, and the percent opening of big mesh is 10～32%.
Related content in the technique scheme is explained as follows:
1, in the such scheme, described percent opening is meant the shared percentage ratio of unit are open interior area, and computing formula is: (perforated area) ÷ (film size) * 100%.
2, in the such scheme, the pass of mesh comprises random geometries such as circle, square, prismatic, rectangle, ellipse, triangle, polygon.Described little mesh and big mesh all can adopt a kind of pass or multiple pass to be used in combination.
3, in the such scheme, described plastic sheeting comprises PE thin film, PP thin film or both mixed films etc.
For achieving the above object, the technical scheme that plastic punched film manufacture method of the present invention adopts is: a kind of manufacture method of secondary mesh combined plastic punched film, with the single layer plastics films is base material, by the molding of secondary drilling technology, the uniform fine-structure mesh of molding that punches for the first time, the uniform large-meshed net of molding punches for the second time; 1/2 of the aperture of little mesh≤big mesh aperture; The perforate density of little mesh be 170～500 holes/centimetre
2, the hole density of big mesh be 30～150 holes/centimetre
2The percent opening of little mesh is 10～35%, and the percent opening of big mesh is 10～32%;
The molding fine-structure mesh that punches for the first time adopts one of following three kinds of methods:
(1), directly utilize the casting films of molten condition to roll the cylinder type cylinder mould that pile warp is crossed a uniform little mesh in surface, from medial surface little mesh is produced the high strength negative pressure by vacuum slot, force film breaks to form and the corresponding hole shape of little mesh, represent with A1;
(2), with solid-state casting films thermoplastic, roll the cylinder type cylinder mould that pile warp is crossed a uniform little mesh in surface then, from medial surface little mesh is produced the high strength negative pressure by vacuum slot, force film breaks to form and the corresponding hole shape of little mesh, represent with A2;
(3), solid-state casting films is formed by the mould mechanical punching, represent with A3;
The molding large-meshed net that punches for the second time adopts one of following two kinds of methods:
(1), with solid-state casting films thermoplastic, roll the cylinder type cylinder mould that pile warp is crossed a uniform big mesh in surface then, from medial surface big mesh is produced the high strength negative pressure by vacuum slot, force film breaks to form and the big corresponding hole shape of mesh, represent with B1;
(2), solid-state casting films is formed by the mould mechanical punching, represent with B2.
Related content in the technique scheme is explained as follows:
1, in the such scheme, can select one of three kinds of methods by punching for the first time, punching for the second time can be selected one of two kinds of methods, because of the secondary punching can concrete scheme (representing with code name) below the combination results:
(1)、A1+B1；
(2)、A1+B2；
(3)、A2+B1；
(4)、A2+B2；
(5)、A3+B1；
(6)、A3+B2。
2, in the such scheme, the described punching first time is identical with the direction of punching for the second time, specifically is meant punching direction unanimity twice, is meant the direction of punching press for mechanical punching, and the against vacuum punching is meant the vacuum draw direction.
3, in the such scheme, described vacuum slot produces the vacuum of high strength negative pressure at-0.5 ± 0.2 atmospheric pressure from medial surface to mesh.
The present invention is by the secondary drilling technology, the fine-structure mesh of the molding of punching for the first time and the large-meshed net of the molding of punching for the second time are combined on the plastic sheeting, produced a kind of breathability and good penetrability thus, it is good to give elasticity and pliability, the emulation plastic punched film that third dimension is strong and comfortable.This plastic punched film is compared with one-time formed plastic punched film in the past and is had the following advantages and effect:
1, because the present invention is the net that spiles earlier on plastic sheeting, and then beat large-meshed net, and the aperture of little mesh≤big mesh aperture 1/2, therefore all leave aperture 24 on the dowel 25 of secondary punching back between macropore 23 and on the awl of the extension in the macropore 23 bucket 26, see illustrated in figures 1 and 2.Increased the percent opening of wire side so on the one hand, thereby strengthened wire side airing function and permeance property, when making the making hole film that is made of plastics and contact skin on the other hand, allowed the people produce the sensation of more soft close skin.
2, owing to above-mentioned the 1st point, can improve the elasticity of wire side, also make wire side have more third dimension.
3, because little mesh makes up on secondary punching basis with big mesh, the dowel 25 between the macropore 23 is arched upward, its cross section is curved, it is orderly that wire side looks concavo-convex, see illustrated in figures 1 and 2, thereby reduced contact area with skin, make skin that maximum comfort be arranged.Simultaneously, the aperture hole on the dowel 25 is irregular burr (not drawing among the figure) along routing up, and forms the emulation feel similar to textile.
Description of drawings
Accompanying drawing 1 is plastic punched film sketch map of the present invention;
Accompanying drawing 2 is plastic punched film generalized section of the present invention;
Accompanying drawing 3 is embodiment one a plastic punched film production technology sketch;
Accompanying drawing 4 is embodiment two plastic punched film production technology sketches.
In the above accompanying drawing: 1, casting machine; 2, casting films; 3, heater; 4, cylinder type cylinder mould; 5, vacuum slot; 6, emptying roller; 7, wind-up roll; 8, carving knife; 9, cylinder type cylinder mould; 10, vacuum slot; 11, deflector roll; 12, deflector roll; 13, deflector roll; 14, casting films; 15, steel rider; 16, steel rider; 17, steel rider; 18, steel rider; 19, deflector roll; 20, deflector roll; 21, deflector roll; 22, deflector roll; 23, macropore; 24, aperture; 25, dowel; 26, extend the awl bucket.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment one: a kind of secondary mesh combined plastic punched film and preparation method thereof is a base material with the single layer plastics films, by the molding of secondary drilling technology, and the uniform fine-structure mesh of molding that punches for the first time, the uniform large-meshed net of molding punches for the second time.The aperture of little mesh is 0.2mm, and big mesh aperture is 0.5mm.The perforate density of little mesh be 230 holes/centimetre
2, the hole density of big mesh be 100 holes/centimetre
2The percent opening of little mesh is 30%, and the percent opening of big mesh is 28%.The pass of aperture and macropore is circle (also can be other geometry).
By shown in Figure 3, during production, PE particle and hydrocolloid particle are mixed, extrude by casting machine 1 high temperature, flow out the casting films 2 of high temperature fused state from the T shape die head of casting machine 1, then, directly utilize the casting films 2 of molten condition to roll the cylinder type cylinder mould 4 that pile warp crosses a uniform little mesh in surface and little mesh is produced the high strength negative pressure by vacuum slot 5 medial surface, the vacuum of negative pressure is at-0.5 ± 0.2 atmospheric pressure, force film breaks to form and the corresponding hole shape of little mesh, carry out the technology that spiles for the first time and net.Then, making hole film is sent into down the road through deflector roll 11,12 and is carried out the technology of for the second time beating large-meshed net.Specifically: 3 thermoplastics of making hole film heater via, roll the cylinder type cylinder mould 9 that pile warp is crossed a uniform big mesh in surface then, from medial surface big mesh is produced the high strength negative pressure by vacuum slot 10, the vacuum of negative pressure forces film breaks to form and the big corresponding hole shape of mesh at-0.5 ± 0.2 atmospheric pressure.After deflector roll 13 is sent to cutting device 8, be finished product finally through wind-up roll 7 rollings.Punching for the first time is identical with the direction of punching for the second time.
Embodiment two: a kind of secondary mesh combined plastic punched film and preparation method thereof is a base material with the single layer plastics films, by the molding of secondary drilling technology, and the uniform fine-structure mesh of molding that punches for the first time, the uniform large-meshed net of molding punches for the second time.The aperture of little mesh is 0.1mm, and big mesh aperture is 0.5mm.The perforate density of little mesh be 400 holes/centimetre
2, the hole density of big mesh be 130 holes/centimetre
2The percent opening of little mesh is 27%, and the percent opening of big mesh is 31%.The pass of aperture and macropore is pentagon (also can be other geometry).
By shown in Figure 4, during production, solid-state casting films 14 is sent from emptying roller 6, compress into capable mechanical punching through 15,16 pairs of steel riders, steel rider 15,16 surfaces are provided with and the corresponding ridge design of fine-structure mesh, in establish deep fat heating, with the technology of this net of realizing spiling for the first time.Then, making hole film is sent into down the road through deflector roll 19,20,21 and is carried out the technology of for the second time beating large-meshed net.Specifically: making hole film is through steel rider 17,18 pairs of mechanical punchings of compressing into capable large-meshed net, and steel rider 17,18 surfaces are provided with and the corresponding ridge design of fine-structure mesh, in establish the deep fat heating.After deflector roll 22 is sent to cutting device 8, be finished product finally through wind-up roll 7 rollings.Punching for the first time is identical with the direction of punching for the second time.
Embodiment three: a kind of secondary mesh combined plastic punched film and preparation method thereof is a base material with the single layer plastics films, by the molding of secondary drilling technology, and the uniform fine-structure mesh of molding that punches for the first time, the uniform large-meshed net of molding punches for the second time.The aperture of little mesh is 0.25mm, and big mesh aperture is 0.5mm.The perforate density of little mesh be 200 holes/centimetre
2, the hole density of big mesh be 80 holes/centimetre
2The percent opening of little mesh is 20%, and the percent opening of big mesh is 28%.The pass of aperture and macropore is hexagon (also can be other geometry).
Production technology: with among the embodiment one the first time drilling technology and embodiment two in the drilling technology second time make up and realize.Perhaps, with among the embodiment two the first time drilling technology and embodiment one in the drilling technology second time make up and realize.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (3)
1, a kind of secondary mesh combined plastic punched film, form by the punching of single layer plastics films base material, it is characterized in that: wire side is made of once little mesh and the big mesh stack of secondary, wherein: once little mesh is the uniform fine-structure mesh of the molding of punching for the first time, and the big mesh of secondary is the uniform large-meshed net of the molding of punching for the second time; 1/2 of the aperture of little mesh≤big mesh aperture; The perforate density of little mesh be 170～500 holes/centimetre
2, the hole density of big mesh be 30～150 holes/centimetre
2The percent opening of little mesh is 10～35%, and the percent opening of big mesh is 10～32%.
2, a kind of manufacture method of secondary mesh combined plastic punched film is characterized in that: with the single layer plastics films base material, and by the molding of secondary drilling technology, the uniform fine-structure mesh of molding that punches for the first time, the uniform large-meshed net of molding punches for the second time; 1/2 of the aperture of little mesh≤big mesh aperture; The perforate density of little mesh be 170～500 holes/centimetre
2, the hole density of big mesh be 30～150 holes/centimetre
2The percent opening of little mesh is 10～35%, and the percent opening of big mesh is 10～32%;
The molding fine-structure mesh that punches for the first time adopts one of following three kinds of methods:
(1), directly utilize the casting films of molten condition to roll the cylinder type cylinder mould that pile warp is crossed a uniform little mesh in surface, from medial surface little mesh is produced the high strength negative pressure, force film breaks to form and the corresponding hole shape of little mesh by vacuum slot;
(2), with solid-state casting films thermoplastic, roll the cylinder type cylinder mould that pile warp is crossed a uniform little mesh in surface then, from medial surface little mesh is produced the high strength negative pressure by vacuum slot, force film breaks to form and the corresponding hole shape of little mesh;
(3), solid-state casting films is formed by the mould mechanical punching;
The molding large-meshed net that punches for the second time adopts one of following two kinds of methods:
(1), with solid-state casting films thermoplastic, roll the cylinder type cylinder mould that pile warp is crossed a uniform big mesh in surface then, from medial surface big mesh is produced the high strength negative pressure by vacuum slot, force film breaks to form and the big corresponding hole shape of mesh;
(2), solid-state casting films is formed by the mould mechanical punching.
3, manufacture method according to claim 2 is characterized in that: the described punching first time is identical with the direction of punching for the second time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610092425 CN1875899A (en) | 2006-05-30 | 2006-05-30 | Secondary mesh combined plastic punched film and method for making same |
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| CN 200610092425 CN1875899A (en) | 2006-05-30 | 2006-05-30 | Secondary mesh combined plastic punched film and method for making same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327656B (en) * | 2007-06-21 | 2011-06-29 | 周亚君 | Method for producing perforating net surface facing material of infrared negative ion health-care sanitary napkins |
| CN106064490A (en) * | 2016-07-07 | 2016-11-02 | 厦门延江新材料股份有限公司 | The production method of a kind of perforated film and true hole perforating device thereof |
| CN106420183A (en) * | 2016-11-17 | 2017-02-22 | 广东川田卫生用品有限公司 | Composite porous non-woven fabric |
| CN108001007A (en) * | 2018-01-31 | 2018-05-08 | 南安市欢益塑胶制品有限公司 | A kind of composite punched membrane and production method |
| US20180369028A1 (en) * | 2017-06-22 | 2018-12-27 | The Procter & Gamble Company | Laminate Webs And Absorbent Articles Having The Same |
| CN110356022A (en) * | 2019-07-08 | 2019-10-22 | 广州天泓医疗科技有限公司 | A kind of production method of the fixed film of low warpage low temperature thermosetting resin |
-
2006
- 2006-05-30 CN CN 200610092425 patent/CN1875899A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327656B (en) * | 2007-06-21 | 2011-06-29 | 周亚君 | Method for producing perforating net surface facing material of infrared negative ion health-care sanitary napkins |
| CN106064490A (en) * | 2016-07-07 | 2016-11-02 | 厦门延江新材料股份有限公司 | The production method of a kind of perforated film and true hole perforating device thereof |
| CN106064490B (en) * | 2016-07-07 | 2019-12-17 | 厦门延江新材料股份有限公司 | Production method of perforated film and vacuum perforating device thereof |
| CN106420183A (en) * | 2016-11-17 | 2017-02-22 | 广东川田卫生用品有限公司 | Composite porous non-woven fabric |
| US20180369028A1 (en) * | 2017-06-22 | 2018-12-27 | The Procter & Gamble Company | Laminate Webs And Absorbent Articles Having The Same |
| US10813797B2 (en) * | 2017-06-22 | 2020-10-27 | The Procter & Gamble Company | Laminate webs and absorbent articles having the same |
| US12102515B2 (en) | 2017-06-22 | 2024-10-01 | The Procter & Gamble Company | Laminate webs and absorbent articles having the same |
| CN108001007A (en) * | 2018-01-31 | 2018-05-08 | 南安市欢益塑胶制品有限公司 | A kind of composite punched membrane and production method |
| CN110356022A (en) * | 2019-07-08 | 2019-10-22 | 广州天泓医疗科技有限公司 | A kind of production method of the fixed film of low warpage low temperature thermosetting resin |
| CN110356022B (en) * | 2019-07-08 | 2021-01-26 | 广州天泓医疗科技有限公司 | Manufacturing method of low-warpage low-temperature thermoplastic resin fixed film |
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