(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2006/0234046A1
`W
`(43) Pub. Date:
`Oct. 19, 2006
`
`US 20060234046A1
`
`(54) MAGNETIC ADHESIVE TAPE AND A
`METHOD FOR MANUFACTURING THE
`MAGNETCADHESIVE TAPE
`
`(76) Inventor: Hung-Chih Wu, Taipei (TW)
`
`Correspondence Address:
`BRUCE H. TROXELL
`SUTE 1404
`S2O5 LEESBURG PIKE
`FALLS CHURCH, VA 22041 (US)
`
`(21) Appl. No.:
`
`11/106,585
`
`(22) Filed:
`
`Apr. 15, 2005
`
`Publication Classification
`
`(51) Int. Cl.
`(2006.01)
`BOSD 5/10
`(2006.01)
`B32B 7/2
`(2006.01)
`C08,
`7/04
`(52) U.S. Cl. ......................... 428/352; 428/343; 427/505;
`427/208
`
`ABSTRACT
`(57)
`A magnetic adhesive tape and a method for manufacturing
`the magnetic adhesive tape. A high-effect releasing agent
`and a property-changing agent are added into a soft mag
`netic material and blended with each other to form a
`strip-like soft magnetic Substrate with releasable Surface.
`One face of the substrate is purified or roughened and coated
`with a high-effect adhesive layer. The substrate is wound on
`a reel. An outer end of the wound substrate can be drawn out
`segment by segment for use.
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`Patent Application
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`Publication
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`Oct. 19, 2006
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`Sheet 3 of 3
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`US 2006/0234046 A1
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`US 2006/0234046 A1
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`Oct. 19, 2006
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`MAGNETCADHESIVE TAPE AND A METHOD
`FOR MANUFACTURING THE MAGNETIC
`ADHESIVE TAPE
`
`BACKGROUND OF THE INVENTION
`0001. The present invention is related to a magnetic
`adhesive tape and a method for manufacturing the magnetic
`adhesive tape, and more particularly to a magnetic adhesive
`tape having both adhesion and magnetic attraction.
`0002. A conventional adhesive tape is widely used in
`daily life. One face of a conventional adhesive tape is coated
`with an adhesive. The tape is wound on a reel. In use, an
`outer end of the tape is drawn out and cut into a segment for
`attaching to an article.
`0003. The tape body of the conventional single-face
`adhesive tape is mainly made of soft plastic material Such as
`PVC or EVA. An adhesive layer is coated on one face of the
`tape body. The tape body is wound on a reel.
`0004 The above conventional adhesive tape can be
`improved or modified as necessary. For example, a thin soft
`magnetic strap can be used as a Substrate. A releasing agent
`and an adhesive can be respectively coated on two faces of
`the substrate. Such adhesive tape has both adhesion and
`magnetic attraction. Taiwanese Patent Application No.
`93.202971 discloses a magnetic adhesive tape. An adhesive
`layer is coated on one face of a magnetic Substrate. A
`releasing agent is coated on the other face of the magnetic
`Substrate. When wound, the releasing agent prevents the
`adhesive layer from adhering to the other face. Therefore,
`when used, the adhesive tape can be unwound.
`
`SUMMARY OF THE INVENTION
`0005. It is a primary object of the present invention to
`provide a magnetic adhesive tape and a method for manu
`facturing the magnetic adhesive tape. A high-effect releasing
`agent and a property-changing agent are directly added into
`a soft magnetic material and blended with each other to form
`a tape the entire surface of which has even releasing effect.
`One face of the tape is purified or roughened and coated with
`a high-effect adhesive layer. The adhesive layer is not easy
`to peel off from the surface of the tape so that the adhesion
`of the tape is enhanced. In addition, when manufacturing the
`above magnetic adhesive tape, it is unnecessary to coat the
`tape with any releasing agent. Therefore, the manufacturing
`procedure is simplified.
`0006.
`It is a further object of the present invention to
`provide the above magnetic adhesive tape and the method
`for manufacturing the magnetic adhesive tape. When mak
`ing the tape, the Surface of the tape is at the same time
`embossed with an embosser to form dense stripes. By means
`of the stripes of the embossed surface, the tape can be
`manually torn off without using any knife to facilitate the use
`of the tape.
`0007 According to the above objects, the magnetic adhe
`sive tape of the present invention is made in Such a manner
`that a high-effect releasing agent and a property-changing
`agent are added into a soft magnetic material and blended
`with each other to form a strip-like soft magnetic substrate
`with releasable surface. One face of the substrate is purified
`or roughened and coated with a high-effect adhesive layer.
`The substrate is wound on a reel. An outer end of the wound
`
`Substrate can be drawn out segment by segment for use.
`Accordingly, one face of the substrate is coated with the
`adhesive layer for adhering to a back face of an article. The
`other face of the Substrate has magnetic attraction for
`attracting and attaching to a wall face or board face.
`0008. The present invention can be best understood
`through the following description and accompanying draw
`ings wherein:
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`0009 FIG. 1 is a manufacturing flow chart of the present
`invention;
`0010 FIG. 2 is a perspective view of a product of the
`present invention; and
`0011 FIG. 3 is a perspective view of another product of
`the present invention.
`
`DETAILED DESCRIPTION OF THE
`PREFERRED EMBODIMENTS
`0012 Please refer to FIGS. 1 and 2. The magnetic
`adhesive tape of the present invention is made from a
`mixture of a magnetizable material 10 (such as barium,
`strontium, rubidium, cobalt, boron or ferric oxide powder),
`rubber/plastic complex material 20, high-effect releasing
`agent 30 (such as saturated fatty acid ester derivative) and
`property-changing agent 40 (Such as mixture of emulsified
`calcium Soap and fatty acid). The above materials are evenly
`blended 50 and then made into thin tape 60. Then, at least
`one face of the tape 60 is wiped by rollers or chemically
`purified (roughened) or polarized by arc 61. Then the tape 60
`is magnetized 62. Then the purified face is coated with an
`adhesive 63. Then the tape 60 is stripped and wound 64 to
`form a magnetic adhesive tape 65.
`0013 In manufacturing, the high-effect releasing agent
`30 is added into the tape 60. Therefore, the surface of the
`entire tape 60 itself has high releasing capability. Accord
`ingly, the adhesive can hardly adhere to the surface. (After
`Surface treatment, the adhesion can be enhanced.) Therefore,
`after wound, the surface free from the adhesive can be easily
`released from the surface with the adhesive coating.
`0014) Moreover, in the case that in the forming proce
`dure, the surface of the tape 60 free from the adhesive is
`densely embossed with an embosser to form stripes 66 (as
`shown in FIG. 3), the tape 60 can be manually torn off
`without using any knife. This facilitates the use of the tape.
`In addition, the stripes 66 of the embossed surface of the tape
`can reduce the contact area between the Surface and the
`adhesive coating 63 So as to enhance the releasability.
`0015. In conclusion, when manufacturing the above mag
`netic adhesive tape, it is unnecessary to coat the tape with
`any releasing agent. Therefore, the manufacturing time is
`shortened and the cost is reduced. Moreover, the entire tape
`has an even and reliable releasing effect. After surface
`treatment, the tape is coated with the adhesive so as to firmly
`bond the adhesive with the tape. By means of the stripes of
`the embossed Surface, the tape can be manually torn off
`without using any knife to facilitate the use of the tape.
`0016. The above embodiments are only used to illustrate
`the present invention, not intended to limit the scope thereof.
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`US 2006/0234046 A1
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`Oct. 19, 2006
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`Many modifications of the above embodiments can be made
`without departing from the spirit of the present invention.
`What is claimed is:
`1. A magnetic adhesive tape comprising an elongated
`magnetic tape to which a high-effect releasing agent is
`added, whereby the entire surface of the tape has high
`releasing capability, one face of the tape being Surface
`treated and then coated with an adhesive layer.
`2. The magnetic adhesive tape as claimed in claim 1,
`wherein the face of the tape is such surface-treated that the
`face is wiped and purified.
`3. The magnetic adhesive tape as claimed in claim 1,
`wherein the face of the tape is such surface-treated that the
`face is polarized by arc.
`4. The magnetic adhesive tape as claimed in claim 1,
`wherein the surface of the tape is embossed with dense
`stripes.
`5. The magnetic adhesive tape as claimed in claim 2,
`wherein the surface of the tape is embossed with dense
`stripes.
`6. The magnetic adhesive tape as claimed in claim 3,
`wherein the surface of the tape is embossed with dense
`stripes.
`7. A method for manufacturing magnetic adhesive tape,
`comprising steps of:
`mixing a magnetizable material, a rubber/plastic complex
`material, a high-effect releasing agent and a property
`changing agent with each other and evenly blending the
`mixture;
`making a thin tape from the mixture;
`Surface-treating at least one face of the tape;
`magnetizing the tape; and
`coating the treated face with an adhesive.
`8. The method for manufacturing magnetic adhesive tape
`as claimed in claim 7, wherein the face of the tape is such
`surface-treated that the face is wiped and purified.
`9. The method for manufacturing magnetic adhesive tape
`as claimed in claim 7, wherein the face of the tape is such
`surface-treated that the face is polarized by arc.
`10. The method for manufacturing magnetic adhesive
`tape as claimed in claim 7, wherein the high-effect releasing
`agent is a saturated fatty acid ester derivative.
`11. The method for manufacturing magnetic adhesive tape
`as claimed in claim 8, wherein the high-effect releasing
`agent is a saturated fatty acid ester derivative.
`12. The method for manufacturing magnetic adhesive
`tape as claimed in claim 9, wherein the high-effect releasing
`agent is a saturated fatty acid ester derivative.
`
`13. The method for manufacturing magnetic adhesive
`tape as claimed in claim 7, wherein the property-changing
`agent is a mixture of emulsified calcium soap and fatty acid.
`14. The method for manufacturing magnetic adhesive
`tape as claimed in claim 8, wherein the property-changing
`agent is a mixture of emulsified calcium soap and fatty acid.
`15. The method for manufacturing magnetic adhesive
`tape as claimed in claim 9, wherein the property-changing
`agent is a mixture of emulsified calcium soap and fatty acid.
`16. The method for manufacturing magnetic adhesive
`tape as claimed in claim 7, wherein when making the thin
`tape, the Surface of the tape is at the same time embossed
`with an embosser to form stripes.
`17. The method for manufacturing magnetic adhesive
`tape as claimed in claim 8, wherein when making the thin
`tape, the Surface of the tape is at the same time embossed
`with an embosser to form stripes.
`18. The method for manufacturing magnetic adhesive
`tape as claimed in claim 9, wherein when making the thin
`tape, the Surface of the tape is at the same time embossed
`with an embosser to form stripes.
`19. The method for manufacturing magnetic adhesive
`tape as claimed in claim 10, wherein when making the thin
`tape, the Surface of the tape is at the same time embossed
`with an embosser to form stripes.
`20. The method for manufacturing magnetic adhesive
`tape as claimed in claim 11, wherein when making the thin
`tape, the Surface of the tape is at the same time embossed
`with an embosser to form stripes.
`21. The method for manufacturing magnetic adhesive
`tape as claimed in claim 12, wherein when making the thin
`tape, the Surface of the tape is at the same time embossed
`with an embosser to form stripes.
`22. The method for manufacturing magnetic adhesive
`tape as claimed in claim 13, wherein when making the thin
`tape, the Surface of the tape is at the same time embossed
`with an embosser to form stripes.
`23. The method for manufacturing magnetic adhesive
`tape as claimed in claim 14, wherein when making the thin
`tape, the Surface of the tape is at the same time embossed
`with an embosser to form stripes.
`24. The method for manufacturing magnetic adhesive
`tape as claimed in claim 15, wherein when making the thin
`tape, the Surface of the tape is at the same time embossed
`with an embosser to form stripes.
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