CN2670110Y - Composite thin membrane with multi-layer structure - Google Patents
Composite thin membrane with multi-layer structure Download PDFInfo
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- CN2670110Y CN2670110Y CNU2003201179497U CN200320117949U CN2670110Y CN 2670110 Y CN2670110 Y CN 2670110Y CN U2003201179497 U CNU2003201179497 U CN U2003201179497U CN 200320117949 U CN200320117949 U CN 200320117949U CN 2670110 Y CN2670110 Y CN 2670110Y
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- rete
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Abstract
The utility model relates to a composite thin membrane with multi-layer structure, which comprises a film with two or multilayer structures. Every film is identical material or different material. The utility model is characterized in that the surface of the film or the middle part of different films also is jointed with a braid; the braid is one layer or multiple layers; the braid is made by bidirectionally and crosswise knitting fibrous material. The utility model provides the composite thin membrane with multi-layer structure whose reinforcement layer can submissively joint in every complex film layer, can largely improve integral mechanical strength of the complex film and can hold the primary function of affixed plastic film.
Description
[technical field]
The utility model relates to a kind of plastic film product, and specifically, the utility model relates to a kind of laminated film of sandwich construction.
[background technology]
Plastic products have obtained more and more widely application in the every field of people's lives and national economy, for example in the commodity packaging field, at building engineering field, in agricultural production and plant breed field or the like, almost all trades and professions none can not lack plastic products, and in all plastic products, plastic sheeting is again a wherein most widely used big classification.Raising along with social technology, life and industry water equality, people have proposed more and more higher requirement to the performance of plastic sheeting, especially aspect packaging for foodstuff, aspect agriculture hot house, at aspects such as civil engineering and storing facilities of waters, require plastic sheeting have good application performance as: fresh-keeping, blocking oxygen, transmitted light, prevent water smoke, tight antiseepage, fast light heatproof, anti-aging etc.; And, when satisfying above-mentioned application performance, also require to have higher mechanical strength, with the cost that minimizing is used and constructed, reduce the waste of resource and to the pollution of surrounding environment.
Industry was also done some corresponding explorations at the problems referred to above.As disclosing a kind of three-layer plastic compound film of used for packaging food in the Chinese patent 90105802.5, this three-layer plastic compound film is as the upper strata by bidirectional stretching polypropylene film, polyethylene be interior (descending) layer, above-mentioned two-layer between the coating continuous polyethylene coating make as the intermediate layer.This invention is excessive at polyethylene and polypropylene oxygen flow speed, and adopts the very little polyethylene coating of oxygen flow speed as the intermediate layer, can fully utilize polyethylene and polyacrylic comparatively good packaging character, can avoid its two defective again.But be to its shortcoming: the adhesion strength in the intermediate layer that polyethylene coating forms or the mechanical strength of film itself are very weak, therefore are unfavorable for improving the mechanical performance and the intensity of whole composite packing film, and it is also comparatively complicated to manufacture operation, and cost is higher.
Similarly, disclose a kind of hollow insulation reinforced plastics film in the Chinese patent 93247247.8, it is to form with compound one or more layers plastic wire in the middle of two-layer or the laminated plastics film.Form the space of hollow in the middle of plastic foil, the space of laminated plastics net and hollow thereof has the effect that insulation is held concurrently and strengthened.This structure can improve the plastics film strength, and the monolayer plastic film thickness is reduced, and saves raw materials consumption, and can make the temperature in the agriculture plastic membrane booth improve more than 5 ℃.But this document does not disclose the contents such as structure of plastic wire, and in fact, if the planform of plastic wire is inappropriate, bad etc. with the combination of the appended plastic foil in both sides, not only humidification can not be brought into play for the plastic foil that both sides are appended, even also the effect that accelerates the failure may be played.
Recyclable multiplexing mulch film is disclosed in the Chinese patent 92231990.1, this mulch film comprises the clathrum that film and film bottom have, film and clathrum are processed into one by adhesive or heat seal, form double-deck reinforcement mulch film, its advantage is the same common ground film of transparency, intensity height; Its shortcoming is that this structure only is two-layer structure, easily forms water droplet at clathrum.
[summary of the invention]
At the above-mentioned defective of prior art, technical problem to be solved in the utility model be to provide a kind of its enhancement layer can each composite film of submissive applying, the overall mechanical strength of composite membrane is significantly improved and can keep the laminated film of sandwich construction of the original function of its plastic foil that attaches.
For this reason, technical solution of the present utility model is a kind of laminated film of sandwich construction, this laminated film comprises one or more layers rete and one or more layers organization level, each rete and organization level can be identical or different material, and braid is fitted on the film surface or between the rete; Braid is woven by fibrous material bidirectional crossedly and forms, and the spacing between parallel adjacent fibrous material is less than the width of fibrous material.
The braid that enhancement Layer of the present utility model adopts the fibrous material interlacing to form, this braid has the not available machinery of common smooth continuous enhancing rete and strengthens characteristic: because can be concentrated the stress in composite membrane somewhere on the total length that is distributed to its relevant warp and/or parallel, in fact, graticule by mutual interlacing just can greatly be alleviated the suffered external force of smooth rete, improve the overall mechanical strength of composite membrane, the elasticity and even the plasticity of this braid of while, many relevant mechanical performances such as submissive performance are extremely similar to the smooth rete of its applying, this is the compound of braid and fits and bring many facilities and advantage: braid can obtain the fitting area with other rete maximums, adhesion increases greatly, and what is more important: be subjected under the external force situation, traditional enhancement Layer is because of concentrating with the too big secondary stress that produces on smooth rete of strain deformation difference of other retes, usually little to the humidification of the overall mechanical strength of composite membrane, but worsened the force structure of composite film on the contrary, cause the reduction of composite membrane overall mechanical strength, and the utility model can overcome above-mentioned shortcoming: do the time spent when composite membrane is subjected to external force, the strain deformation of braid and other retes are much at one or similar, thereby the comprehensive drag of braid of the present utility model and the compound back generation of other retes strengthens greatly, through experiment confirm, the anti-pull-off force index of the utility model laminated film has increased by 6～7 times than the original rete under the independent state, in the anti-performance that pierces through, also significantly improve on the anti-trap tear strength index.
According to the different situations of actual loading situation and production technology, equipment, structure of the present utility model can be for different braids be close to each other bonding after, mutually bonding with different retes respectively again, perhaps braid is respectively mutually bonding with different retes.The utility model also can be taked the direction of the fibrous material on the interval of the fibrous material on a certain braid and/or direction and another braid and/or the structure that staggers mutually at interval, to obtain special mechanical strength effect.
In the preferred case, the number of plies of the utility model laminated film is 2～5 layers, and is formed by connecting by rete is alternate with braid.Under preferred situation, laminated film of the present utility model comprises 3 layers, promptly goes up rete, following rete, and is clipped in rete and the middle braid of following rete.
Preferably, fibrous material of the present utility model is that cross section is the polymer resin stretching flat filament of flat.The braid that the stretching flat filament weaves out more can have been given play to the minimizing strain difference of the utility model braid, the advantage that stress is concentrated.For ease of cooperating the operation of plane or circular weaving machine, stretching flat filament width of the present utility model is 2.5mm.To decorate in order for example getting a certain effect or light, of the present utility modelly can also to use line, band, rope fibrid to weave to obtain braid.
For adapting to the little extensive needs that handbag packed, arrived greatly agricultural canopy film, building antiseepage film, hydraulic engineering shop fixtures film that arrive, braid surface density of the present utility model is 25～250g/m
2, the surface density of described above and below rete is 10～120g/m
2Application function for required and original film of guaranteeing the different application occasion, the utility model adopts braid and the rete compiled can be colourless photic zone, perhaps one or more layers in braid and/or the rete is semi-transparent photosphere and/or dark layer, and all the other are colourless photic zone.
For 3-tier architecture, consider rete and the material of the braid of following rete and centre or the various differences of physicochemical property, and the difference of production and processing technology, equipment, be that gluing connection or direct heat are bonding between braid of the present utility model and the upper and lower rete.
In the utility model preferred embodiment, polymer resin stretching flat filament is a high density polyethylene (HDPE) stretching flat filament, and described rete is low density polyethylene (LDPE) curtain coating rete or low density polyethylene (LDPE) and high density polyethylene (HDPE) curtain coating rete or low density polyethylene (LDPE) and vinyl acetate resin curtain coating rete.The curtain coating rete of upper and lower faces and non-braiding extra play for example has well balanced application performance: light transmission, heat sealability, wrinkle resistance, each is to the mechanical balance performance etc., but mechanical strength properties is the poorest; And braid is stretched thermal finalization, has maximum two-way mechanical strength, but it is wrinkling easily to tear, easily be heated, two kinds of layer bodies are through having overcome the shortcoming of the two after compound, the strongest advantage that has kept the two, so the utility model is with good function of use widely and the mechanical performance that greatly strengthened.Certainly, can realize that the rete of various polymer resins of above-mentioned performance complement and the laminated film of fibrage layer also belong to scope of the present utility model.
Below in conjunction with specific embodiments and the drawings the utility model is further explained.
[description of drawings]
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Fig. 3 is the structural representation of the utility model embodiment 3.
[specific embodiment]
Embodiment 1
As shown in Figure 1: be the laminated film of a kind of sandwich construction of the present utility model, this laminated film comprises the trilamellar membrane layer: go up rete 1, middle rete 2, following rete 3, different retes is same or unlike material, also be fitted with two layers of extra play 4,5 between above-mentioned different rete faces, these two layers of extra plays the 4, the 5th are that the polymer resin stretching flat filament of flat weaves the braid that forms bidirectional crossedly by cross section.On braid 4,5, closely attach between parallel adjacent stretching flat filament.Two layers of braid the 4, the 5th, respectively mutually bonding with different retes respectively.Described stretching flat filament width is 2.0～2.6mm.The surface density of described braid 4,5 is 25～250g/m
2, the surface density of described upper, middle and lower face mask layer 1,2,3 is 10～120g/m
2
Described polymer resin stretching flat filament is a high density polyethylene (HDPE) stretching flat filament, and described upper and lower rete and middle rete 1,2,3 are low density polyethylene (LDPE) curtain coating rete or low density polyethylene (LDPE) and high density polyethylene (HDPE) curtain coating rete or low density polyethylene (LDPE) and vinyl acetate resin curtain coating rete.
As shown in Figure 2: be the laminated film of a kind of sandwich construction of the present utility model, described laminated film comprises three layers altogether: go up rete 1, following rete 2, and be clipped in the braid 4 in the middle of described upward rete 1 and the following rete 2.Different retes 1,2 are same or unlike material, and braid 4 is that the polymer resin stretching flat filament of flat weaves bidirectional crossedly and forms for one deck by cross section.Be that gluing connection or direct heat are bonding between described braid 4 and the described upper and lower rete 1,2.
On same braid 4, closely attach between parallel adjacent stretching flat filament.Described stretching flat filament width is 2.0～2.6mm.The surface density of described braid 4 is 25～250g/m
2, the surface density of described above and below rete 1,2 is 10～120g/m
2
Described braid 4 and upper and lower rete 1,2 are colourless printing opacity or semi-transparent photosphere, or in described braid 4 and the upper and lower rete 1,2 a certain or which floor be than dark layer.
Described polymer resin stretching flat filament is a high density polyethylene (HDPE) stretching flat filament, and described upper and lower rete 1,2 is low density polyethylene (LDPE) curtain coating rete or low density polyethylene (LDPE) and high density polyethylene (HDPE) curtain coating rete or low density polyethylene (LDPE) and vinyl acetate resin curtain coating rete.
Embodiment 3
As shown in Figure 3: be the laminated film of a kind of sandwich construction of the present utility model, this laminated film comprises one deck rete 1, also be fitted with two layers of braid 4,5 of unlike material and/or different structural textures on a side surface of this rete 1, this braid the 4, the 5th is woven the braid that forms bidirectional crossedly by fibrous material.On same braid 4 or 5, the spacing between parallel adjacent described fibrous material equals the width of described fibrous material.Two layers of braid the 4, the 5th, mutual fissure of displacement ground are close to after bonding mutually bonding with rete 1 respectively more each other.
Described fibrous material is that cross section is the polymer resin stretching flat filament of flat.Stretching flat filament width is 2.0～2.6mm.Between described braid 4,5 and the rete 1 is that direct heat is bonding, and two layers of braid the 4, the 5th, by gluing connection.
Described polymer resin stretching flat filament is a high density polyethylene (HDPE) stretching flat filament, and described rete 4,5 is low density polyethylene (LDPE) curtain coating rete or low density polyethylene (LDPE) and high density polyethylene (HDPE) curtain coating rete or low density polyethylene (LDPE) and vinyl acetate resin curtain coating rete.
Claims (9)
1, a kind of laminated film of sandwich construction, this laminated film comprise one or more layers rete and one or more layers braid, it is characterized in that: described braid is fitted on the described film surface or between the rete; Described braid is to be woven by fibrous material to form bidirectional crossedly, and the spacing between parallel adjacent fibrous material is less than the width of fibrous material.
2, laminated film as claimed in claim 1 is characterized in that: the number of plies of described laminated film is 2～5 layers, and forms by described rete is alternate with described braid.
3, laminated film as claimed in claim 2 is characterized in that: described laminated film is a 3-tier architecture, comprises rete, following rete and is clipped in described rete and the middle braid of following rete gone up.
4, laminated film as claimed in claim 1 is characterized in that: described fibrous material is that cross section is the polymer resin stretching flat filament of flat, and this stretching flat filament width is 2.0～2.6mm.
5, laminated film as claimed in claim 3 is characterized in that: the surface density of described braid is 25～250g/m
2, the surface density of described upper and lower rete is 10～120g/m
2
6, laminated film as claimed in claim 1 is characterized in that: described braid and rete are colourless photic zone.
7, laminated film as claimed in claim 1 is characterized in that: one or more layers for semi-transparent photosphere and/or dark layer in described braid and/or the rete, all the other are colourless photic zone.
8, laminated film as claimed in claim 1 is characterized in that: described braid and described rete are by gluing or direct heat is bonding interconnects.
9, laminated film as claimed in claim 4, it is characterized in that: described polymer resin stretching flat filament is a high density polyethylene (HDPE) stretching flat filament, and described rete is the curtain coating rete of low density polyethylene (LDPE) curtain coating rete, high density polyethylene (HDPE) curtain coating rete, polypropylene casting rete, vinyl acetate resin curtain coating rete or polymer blend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201179497U CN2670110Y (en) | 2003-11-11 | 2003-11-11 | Composite thin membrane with multi-layer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201179497U CN2670110Y (en) | 2003-11-11 | 2003-11-11 | Composite thin membrane with multi-layer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2670110Y true CN2670110Y (en) | 2005-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201179497U Expired - Lifetime CN2670110Y (en) | 2003-11-11 | 2003-11-11 | Composite thin membrane with multi-layer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2670110Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102919089A (en) * | 2012-11-15 | 2013-02-13 | 佛山佛塑科技集团股份有限公司 | Lawn protective material and manufacturing method thereof |
| CN106956488A (en) * | 2017-02-13 | 2017-07-18 | 滁州银兴新材料科技有限公司 | A kind of membrane material structure and its vacuum heat-insulating plate with high anti-zoned puncture energy |
| CN107471790A (en) * | 2017-08-14 | 2017-12-15 | 苏州市玄天环保科技有限公司 | A kind of crossed composite membrane and its manufacture method with TPU membrane |
| CN107627686A (en) * | 2017-08-07 | 2018-01-26 | 江阴升辉包装材料有限公司 | A kind of vacuum skin packaging film of high puncturing resistance |
| CN107627701A (en) * | 2017-08-07 | 2018-01-26 | 江阴升辉包装材料有限公司 | A kind of vacuum skin packaging film and its cross-linking treatment method |
| CN109514949A (en) * | 2017-09-20 | 2019-03-26 | 湖北珍肴食品股份有限公司 | A kind of Food packaging processes of anti-gas-leak |
| CN112751134A (en) * | 2019-10-29 | 2021-05-04 | 丰田自动车株式会社 | Battery pack and method for manufacturing same |
| CN113796244A (en) * | 2021-09-16 | 2021-12-17 | 中国热带农业科学院湛江实验站 | High-weather-resistance biodegradable mulching film structure |
-
2003
- 2003-11-11 CN CNU2003201179497U patent/CN2670110Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102919089A (en) * | 2012-11-15 | 2013-02-13 | 佛山佛塑科技集团股份有限公司 | Lawn protective material and manufacturing method thereof |
| CN102919089B (en) * | 2012-11-15 | 2014-06-25 | 佛山佛塑科技集团股份有限公司 | Lawn protective material and manufacturing method thereof |
| CN106956488A (en) * | 2017-02-13 | 2017-07-18 | 滁州银兴新材料科技有限公司 | A kind of membrane material structure and its vacuum heat-insulating plate with high anti-zoned puncture energy |
| CN107627686A (en) * | 2017-08-07 | 2018-01-26 | 江阴升辉包装材料有限公司 | A kind of vacuum skin packaging film of high puncturing resistance |
| CN107627701A (en) * | 2017-08-07 | 2018-01-26 | 江阴升辉包装材料有限公司 | A kind of vacuum skin packaging film and its cross-linking treatment method |
| CN107471790A (en) * | 2017-08-14 | 2017-12-15 | 苏州市玄天环保科技有限公司 | A kind of crossed composite membrane and its manufacture method with TPU membrane |
| CN109514949A (en) * | 2017-09-20 | 2019-03-26 | 湖北珍肴食品股份有限公司 | A kind of Food packaging processes of anti-gas-leak |
| CN112751134A (en) * | 2019-10-29 | 2021-05-04 | 丰田自动车株式会社 | Battery pack and method for manufacturing same |
| CN113796244A (en) * | 2021-09-16 | 2021-12-17 | 中国热带农业科学院湛江实验站 | High-weather-resistance biodegradable mulching film structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131111 Granted publication date: 20050112 |