CN108272324B - Self-priming closed magnetic stripe for flexible door curtain and preparation method thereof - Google Patents
Self-priming closed magnetic stripe for flexible door curtain and preparation method thereof Download PDFInfo
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- CN108272324B CN108272324B CN201810248997.0A CN201810248997A CN108272324B CN 108272324 B CN108272324 B CN 108272324B CN 201810248997 A CN201810248997 A CN 201810248997A CN 108272324 B CN108272324 B CN 108272324B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000003475 lamination Methods 0.000 claims abstract description 8
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 7
- 238000003490 calendering Methods 0.000 claims abstract description 5
- 229920000642 polymer Polymers 0.000 claims description 17
- 239000000945 filler Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 239000000696 magnetic material Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 10
- 238000001179 sorption measurement Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 229910000859 α-Fe Inorganic materials 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005034 decoration Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 229910001004 magnetic alloy Inorganic materials 0.000 description 4
- 210000005239 tubule Anatomy 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- QVYYOKWPCQYKEY-UHFFFAOYSA-N [Fe].[Co] Chemical compound [Fe].[Co] QVYYOKWPCQYKEY-UHFFFAOYSA-N 0.000 description 1
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010070 extrusion (rubber) Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- -1 iron-silicon-aluminum Chemical compound 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47H—FURNISHINGS FOR WINDOWS OR DOORS
- A47H23/00—Curtains; Draperies
- A47H23/01—Bottom bars for stretching hanging curtains; Magnets, slide fasteners, or the like to improve closing of curtains
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0231—Magnetic circuits with PM for power or force generation
- H01F7/0242—Magnetic drives, magnetic coupling devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
Abstract
The invention discloses a self-priming closed magnetic stripe for a flexible door curtain and a preparation method thereof, and the self-priming closed magnetic stripe comprises at least one pair of adjacent flexible magnetic stripes which are coated in the edge of the flexible door curtain and are consistent in material quality, wherein the magnetic stripes comprise a permanent magnetic layer and a soft magnetic layer which are closely connected, the front and the back are a pair of magnetic stripes with mutually-sucking side surfaces with mutually-different north and south poles, the thickness of the side surfaces of the magnetic stripes is not more than 5mm, and the width of the front and the back is not less than the thickness. The preparation method of the magnetic stripe comprises the following steps: the permanent magnetic layer and the soft magnetic layer are respectively formed by calendaring, the soft magnetic layer is tightly connected on the front and back surfaces of the permanent magnetic layer through lamination or gluing, the strips are rolled, and the magnetic strips are magnetized along the thickness direction. The invention realizes the uniform adsorption of the side surface of the magnetic stripe of the door closure, has good door closure effect, better user experience, thinner magnetic stripe thickness, easy splitting and loading of products, higher productivity and yield and lower production cost.
Description
Technical Field
The invention relates to a self-priming closed magnetic stripe for a flexible door curtain and a preparation method thereof.
Background
The magnetic self-suction soft door curtain is widely applied, is used in public places such as shops, restaurants and workshops, is also used in home furnishings, has the functions of wind prevention, dust prevention, mosquito prevention, transparency, decoration, self-suction closing and the like, and is increasingly favored by the decoration material world.
The magnetic self-suction type soft door curtain in the prior art has a plurality of defects in aspects due to the difference of magnetic suction modes and needs to be improved.
The authorized bulletin number 2802053Y discloses a rubber magnetic stripe type totally-enclosed soft screen door, wherein a rubber magnetic seal is arranged at the overlapped part of two door edges, and a ferrite sintered magnetic block with stronger magnetism is arranged at the lower end of the seal. The door seals are overlapped, the thickness of the screen door can be increased, the decoration effect is affected, ferrite is sintered, the local suction force is strong, and the use experience is imperfect and potential safety hazards of strong suction force are brought. Obviously, the patent uses the front and back overlapped adsorption of the rubber seal to ensure enough suction force, but has the defects of increased thickness, bulkiness and the like.
The authorized bulletin number 101731928B, magnetic touch transparent soft film door curtain, discloses a joint device with several rows of magnetic touch devices, strip-shaped magnetic blocks in the collision device, and soft film edge wrapping is used outside. The disadvantage of this patent is that rely on local magnetic force to adsorb, the strong magnetic path that produces local suction must have the potential safety hazard, and suction distribution is uneven, and user experience uses must not be perfect enough, and sealed effect also can not guarantee.
The authorized bulletin number 2272713Y is a door curtain, which is composed of a plurality of vertically hung strip-shaped soft materials, and is characterized in that vertical tubules are respectively arranged on the lateral sides of the strip-shaped soft materials, the two tubules are respectively filled with silicon materials and magnetic materials, and as the two tubules are different in materials, the two tubules can not obtain magnetic adsorption, other adsorption modes can not be obtained, the firmness of self-suction is guaranteed, and the patent does not disclose related suction.
The suction force F is a final effect parameter which can be intuitively reflected when the magnet is used, the force F is equal to Bg and Bg is equal to S, the suction force is proportional to the square of the magnetic flux density Bg of a magnetic circuit gap formed by the magnet and a sucked substance, the suction force is proportional to the suction area, the working surface of the conventional magnetic stripe is designed on the surface with larger area, and the side surface with small area is not in a considered range. The inventor authorized bulletin number 104945754B discloses a manufacturing method of a rubber extrusion magnetic stripe for improving suction force: the magnetic strip is formed integrally by coextrusion, and has at least a double-layer structure, one layer is a conventional permanent magnetic layer, the other layer is a soft magnetic layer, and the attraction force is improved by 15-30%, but the patent does not further disclose the selection of the working surface of the magnetic strip and the matching of a magnetizing mode and the working surface.
The working face with large area is abandoned, the side face with small suction force is used instead, the contradiction is normal, the thickness of the side face is required to be increased, the difficulty of overcoming the difficulty is brought to the magnetic stripe production process, the magnetic stripe is too thick to be cut, the yield is low, the production of the magnetic stripe cannot be increased, and the production cost is high.
The scheme of the invention solves the defects in the prior art: in order to ensure enough suction force on the side surface, the thickness of the magnetic stripe needs to be 5mm, the splitting is difficult, the yield is low, and the feeding is difficult; the suction force is provided locally by virtue of the magnetic stripe, the edge sealing stress is uneven, and potential safety hazards exist at the local strong suction force; the front and back surfaces of the magnetic attraction device are overlapped and adsorbed, and the adsorption surface is far larger than the side surface, so that the practical function and the decoration function of the door curtain are affected.
Disclosure of Invention
The invention aims to provide a self-priming closed magnetic stripe for a flexible door curtain and a preparation method thereof.
A self-priming closed magnetic stripe for a flexible door curtain and a preparation method thereof are provided, and the self-priming closed magnetic stripe comprises at least one pair of adjacent flexible magnetic stripes which are wrapped in the edge of the flexible door curtain and are consistent in material quality, and is characterized in that the magnetic stripes comprise a permanent magnetic layer b and a soft magnetic layer a which are closely connected, the front and the back are a pair of magnetic stripes with opposite sides with different north and south poles, the thickness 3 of the side surface of the magnetic stripe is not more than 5mm, and the width 2 of the magnetic stripe is not less than the thickness 3.
The thickness of the soft magnetic layer is not more than 1mm, and the thickness of the permanent magnetic layer is not more than 4mm.
The soft magnetic layers are closely arranged on the front and rear surfaces of the permanent magnetic layer respectively.
The soft magnetic layers are respectively and tightly arranged on the front and back surfaces of the permanent magnetic layer in a lamination and gluing way.
The appearance of the permanent magnetic material is sheet-shaped.
The soft magnetic layer is a modified high molecular polymer layer with soft magnetic substances as fillers.
The permanent magnetic layer is a modified high molecular polymer layer taking a permanent magnetic substance as a filler.
The section shape of the magnetic stripe is rectangular or equivalent special-shaped.
The preparation method of the magnetic stripe comprises the following steps: the permanent magnetic layer and the soft magnetic layer are respectively formed by calendaring, the soft magnetic layer is tightly connected on the front and back surfaces of the permanent magnetic layer through lamination or gluing, the strips are rolled, and the magnetic strips are magnetized along the thickness direction.
The beneficial effects of the invention are as follows:
1. The magnetic stripe suction is sufficient, and the side suction can be improved to 2 times of the same ratio, and the thickness is less than 5mm, and the slitting is easy, and the yield is high, and productivity is high, and is with low costs, has solved the urgent bottleneck problem that puzzles unable quantitative in the actual production.
2. The suction force of the front and the back of the magnetic stripe is greatly reduced and is 0.28 to 0.65 which are the same ratio, so that the conventional front and back overlapping adsorption of a large area is avoided, the thickness of the door curtain is not increased, and the decorative effect of the door curtain is not influenced.
3. The suction covers all contact surfaces of adjacent curtains from top to bottom, because the front and the back of the magnetic strips are different north and south poles, namely, the north and south poles are magnetized, the suction is even, and the door closing effect is good.
4. The width of the front and back faces of the magnetic strip is far greater than the thickness, and the magnetic strip is not twisted.
5. The magnetic stripe is even in suction from top to bottom, the user experience is more perfect, and the potential safety hazard of local strong magnetism is eliminated.
6. The invention has obvious improvement effect and strong universality, and can be used for various plane self-priming closed door curtains.
The invention is further described in connection with the following specific examples and the accompanying drawings, which are not to be construed as further limiting the invention:
Drawings
FIG. 1 is a schematic diagram of the front view of the present invention;
FIG. 2 is a schematic top plan view of the present invention;
FIG. 3 is a schematic representation of the right and left side view of adjacent facets of the present invention;
FIG. 4 is a schematic representation of a prior art top plan view;
fig. 5 is a schematic diagram of the right and left side view of adjacent faces of the prior art.
In fig. 1 to 5:1 is the magnetic stripe length L,2 is the magnetic stripe width W, 3-bit magnetic stripe thickness T, a is the soft magnetic layer, and b is the permanent magnetic layer.
The specific embodiment is as follows:
A self-priming closed magnetic stripe for a flexible door curtain and a preparation method thereof are provided, and the self-priming closed magnetic stripe comprises at least one pair of adjacent flexible magnetic stripes which are wrapped in the edge of the flexible door curtain and are consistent in material quality, and is characterized in that the magnetic stripes comprise a permanent magnetic layer b and a soft magnetic layer a which are closely connected, the front and the back are a pair of magnetic stripes with opposite sides with different north and south poles, the thickness 3 of the side surface of the magnetic stripe is not more than 5mm, and the width 2 of the magnetic stripe is not less than the thickness 3.
Further, the magnetic strips are magnetically charged in the north-south direction in the thickness direction.
Further, the front and rear faces are the front and rear faces of the front view of the door closing magnetic stripe shown in fig. 1.
The thickness of the soft magnetic layer is not more than 1mm, and the thickness of the permanent magnetic layer is not more than 4mm.
The soft magnetic layers are closely arranged on the front and rear surfaces of the permanent magnetic layer respectively.
Further, the soft magnetic layer and the permanent magnetic layer are tightly connected by lamination and adhesion.
The appearance of the permanent magnetic material is sheet-shaped.
The soft magnetic layer is a modified high molecular polymer layer with soft magnetic substances as fillers.
Further, the soft magnetic material is at least one of pure iron and low carbon steel, iron-silicon alloy, iron-aluminum alloy, iron-silicon-aluminum alloy, nickel-iron alloy, iron-cobalt alloy, soft magnetic ferrite, amorphous soft magnetic alloy and ultra-microcrystalline soft magnetic alloy in public knowledge.
The permanent magnetic layer is a modified high molecular polymer layer taking a permanent magnetic substance as a filler.
Further, the permanent magnetic substance is at least one of AlNi-Co permanent magnetic alloy, fe-Cr-Co permanent magnetic alloy, permanent magnetic ferrite, rare earth permanent magnetic material and composite permanent magnetic material in public knowledge.
The magnetic stripe section shape (overlook plane) is rectangle or equivalent special-shaped.
Further, the equivalent special-shaped pattern is a similar rectangular pattern with a rectangular linear profile with a cross section subjected to special-shaped adjustment.
The preparation method of the magnetic stripe comprises the following steps: the permanent magnetic layer and the soft magnetic layer are respectively formed by calendaring, the soft magnetic layer is tightly connected on the front and back surfaces of the permanent magnetic layer in a lamination or gluing mode, the strips are rolled, and the magnetic strips are magnetized along the thickness direction.
Example 1
According to the magnetic stripe, the length L of the magnetic stripe is 10cm, the magnetic stripe comprises a permanent magnetic layer b and soft magnetic layers a closely arranged on the front face and the back face of the permanent magnetic layer, the front face and the back face of the magnetic stripe are different north-south poles, namely, the north-south poles are magnetized in the thickness direction of the magnetic stripe, the size width W of the overlook face of the magnetic stripe is 8mm, the thickness T of the magnetic stripe is 5mm, the thickness of the magnetic stripe permanent magnetic layer b is 4mm, the thickness of the soft magnetic layer a of the magnetic stripe is 0.5mm, the permanent magnetic layer is a sheet-shaped permanent magnetic ferrite powder (NF 11 material) and is a polymer modified polymer layer of the filler, the maximum magnetic energy product (BH) max of the permanent magnetic layer is 1.4-1.5 MGOe, the soft magnetic layer is a polymer modified polymer layer of the filler, the soft magnetic layer is bonded on the front face and the back face of the permanent magnetic layer through adhesion or close adhesion, the adsorption face of the adjacent magnetic stripe is on the left side face and the right side face of the magnetic stripe, and the left side face of the magnetic stripe is respectively in the right side view, and the side view is the left side face of the magnetic stripe is 3. The preparation method of the magnetic stripe comprises the following steps: the permanent magnetic layer and the soft magnetic layer are respectively formed by calendaring, the soft magnetic layer is tightly connected on the front and back surfaces of the permanent magnetic layer through lamination or gluing, the strips are rolled, and the magnetic strips are magnetized along the thickness direction.
Example 2
For the magnetic stripe of the present invention, the same procedure as in example 1 was followed except that the permanent magnetic layer b had a thickness of 3mm and the soft magnetic layer a had a thickness of 1 mm.
Comparative example 1
The comparative example is a magnetic stripe of the prior art, referring to fig. 1, a pair of adjacent flexible magnetic stripes coated in the edge of the flexible door curtain and made of identical materials, the intercepting length L of the magnetic stripe is 10cm, referring to fig. 4, the magnetic stripe is characterized in that the magnetic stripe only comprises a permanent magnetic layer, the thickness b of the permanent magnetic layer of the magnetic stripe is 5mm, the front and the back of the pair of magnetic stripes are different north and south poles, namely, the south and north thicknesses of the magnetic stripe are magnetized, the size of the overlook plane is 8mm of the width W of the magnetic stripe, the thickness T of the magnetic stripe is 5mm, the permanent magnetic layer is a high molecular modified polymer layer with flaky permanent magnetic ferrite powder (NF 12 material) as a filling material, the maximum magnetic energy product (BH) max of the permanent magnetic layer is 1.6-1.7 mgoe, the adsorbing plane is on the side, referring to fig. 5, the right side view and the left side view of the mutually absorbed sides of the pair of magnetic stripes are respectively. The preparation method of the magnetic stripe comprises the following steps: the permanent magnet layer is formed by extending, winding the strip, and magnetizing the magnetic strip along the thickness direction.
The following are the suction force tests of examples 1, 2 of the present invention, one comparative example, the side of the prior art example of the market 5mm×10mm and the front and rear 8mm×10mm, recorded in Table 1 below
Remarks: the (BH) max of the permanent magnetic layer of NF12 material is 1.6-1.7 MGOe, and the (BH) max of the permanent magnetic layer of NF11 material is 1.4-1.5 MGOe.
Conclusion 1, it is known from the above suction comparison that when the length, width and thickness dimensions of the magnetic strips are the same, 1.1, the side surface areas of the embodiment 1 and the embodiment 2 of the invention are far smaller than the front and rear surface areas, but the side suction force is far greater than the front and rear surface suction force, so that overlapping suction of the front and rear surfaces is avoided when the door curtain is closed by self-suction, and automatic suction and closing of the side surfaces are guaranteed; 1.2, the magnetic strips with the thickness of 5mm are used as comparative examples and the prior art in the market, the thickness of the magnetic strips cannot be reduced, and the defects of difficult strip separation, low efficiency, low yield and difficult quantity feeding exist; and the front and back suction is equivalent to the side suction, so that confusion is necessarily generated during adsorption, and the door closing effect is affected. 1.3, under the condition that 6.45N on the market meets the requirement of door curtain suction, the side adsorption force of the embodiment 1 is 12.99N, and is strongest, so that the structure leaves a great reduction space for the thickness of the magnetic stripe, and the structure of the embodiment 1 can be adjusted to be minimum thickness, and corresponds to the lowest cost, the best decorative effect and the best user experience effect.
Example 3:
The magnetic strip of the invention is characterized in that the thickness of the permanent magnetic layer b is 2.5mm, the thickness of the soft magnetic layer a is 0.5mm, the width W of the magnetic strip is 6mm, the permanent magnetic layer is a polymer modified polymer layer with flaky permanent magnetic ferrite powder (NF 12 material) as a filling material, the maximum magnetic energy product (BH) max of the permanent magnetic layer is 1.6-1.7 MGOe, and the other materials are consistent with the embodiment 1.
Example 4:
for the magnetic stripe of the present invention, the procedure was as in example 3 except that the width W of the magnetic stripe was 8 mm.
Example 5:
For the magnetic stripe of the present invention, the procedure was as in example 3 except that the width W of the magnetic stripe was 10 mm.
Example 6:
for the magnetic stripe of the present invention, the procedure was as in example 3 except that the width W of the magnetic stripe was 12 mm.
The side-to-suction and front-to-back-to-suction tests for examples 3, 4,5, 6 and prior art examples of the present invention are shown below and recorded in Table 2 below
Remarks: the large machine samples in the table are mass production samples.
Conclusion 2
As can be seen from the comparison of the suction test results, the suction force of the product mass production sample of the invention with the same width and length is larger than that of the market sample although the thickness is smaller than that of the market sample, when the suction areas of the side surfaces of the magnetic strips are the same and the thicknesses of the soft magnetic layer and the permanent magnetic layer are both consistent to be 0.5mm and 2.5mm, the side suction force is increased along with the increase of the width of the magnetic strips, so that enough adjustment space is reserved for the application of different occasions of the door curtain, the suction force of the front side and the rear side is far smaller than that of the side suction force, and overlapping suction is avoided.
Example 7
The magnetic stripe of the invention is identical to that of the embodiment 1 except that the thickness of the permanent magnetic layer b is 2.0mm, the thickness of the soft magnetic layer a is 0.7mm, the thickness T of the magnetic stripe is 3.4mm, the permanent magnetic layer is a polymer modified polymer layer with flaky permanent magnetic ferrite powder (NF 12 material) as a filling material, and the maximum magnetic energy product (BH) max of the permanent magnetic layer is 1.6-1.7 MGOe.
Example 8
For the magnetic stripe of the present invention, the same procedure as in example 7 was followed except that the permanent magnet layer b had a thickness of 2.5mm, the soft magnetic layer a had a thickness of 0.5mm, and the magnetic stripe had a thickness T of 3.5 mm.
Example 9
For the magnetic stripe of the present invention, the same procedure as in example 7 was followed except that the permanent magnet layer b had a thickness of 2.5mm, the soft magnetic layer a had a thickness of 0.7mm, and the magnetic stripe had a thickness T of 3.9 mm.
Example 10
The magnetic stripe of the invention has the thickness T of 4.0mm except that the thickness of the permanent magnetic layer b is 3.0mm and the thickness of the soft magnetic layer a is 0.5mm, the permanent magnetic layer is a polymer modified polymer layer with flaky permanent magnetic ferrite powder (NF 11 material) as a filling material, and the maximum magnetic energy product (BH) max of the permanent magnetic layer is 1.4-1.5 MGOe, which is the same as that of the embodiment 7.
The following are side-to-suction and front-to-back-to-suction tests for inventive examples 7, 8, 9, 10, and prior art examples, recorded in Table 3 below
Conclusion 3, it is known from the comparison of the above suction test results that, under the condition that the side suction force of 6.45N is compared with the market and the magnetic stripe width W is consistent, the magnetic stripe thickness of the embodiments 7, 8, 9 and 10 of the present invention is thinner than the market, and the thickness still has a smaller space, and the suction force is far smaller than the side tension force although the area is far larger than the side area on the front and rear sides, thereby ensuring the self suction of the side and avoiding the overlapping adsorption of the curtain.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (5)
1. The utility model provides a from inhaling formula closed magnetic stripe for flexible door curtain, includes at least a pair of flexible magnetic stripe that is wrapped in adjacent material in flexible door curtain edge unanimous, characterized by:
The magnetic strip comprises a permanent magnetic layer (b) and a soft magnetic layer (a) which are closely connected, the front and the back are a pair of magnetic strips with opposite sides with different north and south poles, the thickness (3) of the side face of the magnetic strip is not more than 5mm, and the width (2) of the magnetic strip is not less than the thickness (3);
the thickness of the soft magnetic layer is not more than 1mm, and the thickness of the permanent magnetic layer is not more than 4mm;
the soft magnetic layers are respectively and tightly arranged on the front and back surfaces of the permanent magnetic layer in a lamination or gluing mode;
the preparation method of the magnetic stripe comprises the following steps: the permanent magnetic layer and the soft magnetic layer are respectively formed by calendaring, the soft magnetic layer is tightly connected on the front and back surfaces of the permanent magnetic layer in a lamination or gluing mode, the strips are rolled, and the magnetic strips are magnetized along the thickness direction.
2. A self-priming closing magnetic stripe for a flexible door curtain according to claim 1, wherein: the appearance of the permanent magnetic layer magnetic material is sheet-shaped.
3. A self-priming closing magnetic stripe for a flexible door curtain according to claim 1, wherein: the soft magnetic layer is a modified high molecular polymer layer with soft magnetic substances as fillers.
4. A self-priming closing magnetic stripe for a flexible door curtain according to claim 2 and wherein: the permanent magnetic layer is a modified high molecular polymer layer taking a permanent magnetic substance as a filler.
5. A self-priming closing magnetic stripe for a flexible door curtain according to claim 1, wherein: the section shape of the magnetic stripe is rectangular or equivalent special-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810248997.0A CN108272324B (en) | 2018-03-26 | 2018-03-26 | Self-priming closed magnetic stripe for flexible door curtain and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810248997.0A CN108272324B (en) | 2018-03-26 | 2018-03-26 | Self-priming closed magnetic stripe for flexible door curtain and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108272324A CN108272324A (en) | 2018-07-13 |
| CN108272324B true CN108272324B (en) | 2024-04-26 |
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| CN104945754A (en) * | 2015-07-20 | 2015-09-30 | 广州新莱福磁电有限公司 | Manufacturing method for improving attraction of rubber extrusion magnetic strip |
| CN205012903U (en) * | 2015-10-01 | 2016-02-03 | 靳瑞泽 | Beaver screen window of borduring |
| CN209202736U (en) * | 2018-03-26 | 2019-08-06 | 广州新莱福磁电有限公司 | A kind of self-priming closure magnetic stripe for flexible door curtain |
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