CN1177409A - Memory card and method for producing same - Google Patents
Memory card and method for producing same Download PDFInfo
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- CN1177409A CN1177409A CN 95197726 CN95197726A CN1177409A CN 1177409 A CN1177409 A CN 1177409A CN 95197726 CN95197726 CN 95197726 CN 95197726 A CN95197726 A CN 95197726A CN 1177409 A CN1177409 A CN 1177409A
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Abstract
The invention relates to a memory card and its method of manufacture. The memory card has a flexible composite substrate formed fro ma top film (16), a base film (14), and an adhesive layer (18) deposited between and bonding together the base film and the top film. Preferably, the thickness of such composite substrate is between 8 and 12 mils. A layer of metal (20) is adhered to the exposed surface of the top film. A circuit layer (22) is provided to form at least one site (40) on the memory card which is readable by an external reading device. A protective layer is provided to overlie and protect the circuit layer of the memory card.
Description
The present invention relates to a kind of storage card, and relate to a kind of improved method of producing this class card as the advanced charge card of buying commodity and/or obtaining serving.
Its owner needn't be made in cash or prepayment storage card that token just can be done shopping very universal.Usually, this card is used to obtain extensive stock and/or service, for example, in the automatic vending machine of beverage or food, in the prepayment ticket such as this class public transport of motorbus, train or subway, perhaps is used for public telephone or duplicating machine.
Usually, storage card belongs to one of following several types: readable magnetic card, microcircuit card and no touch card.Readable magnetic card has a magnetic stripe on the superficies that are positioned at the information of depositing (for example remaining sum of this card) place.The advantage of this card is cheap and successfully has been used as the rate card of transmission system.Yet because secure context, this card can only obtain limited use as prepaid card.Because the magnetic coded message that leaves in the card may be wiped because of carelessness, perhaps deliberately replaced, so that increase the radix that is comprised in original this storage card by illegal user.
Microcircuit card has memory storage, for example embeds integrated circuit or P.e.c. in this card, by suitable electrically contacting, can be connected to certain card reader to determine the remaining sum of this card.The example of this microcircuit card can be seen in the U.S. Patent No. 4719140 of the U.S. Patent No. 4737620 of Mollet etc. and Hara etc.Though more far better than readable magnetic card aspect preventing to alter, its shortcoming is that cost is quite high.Therefore be not suitable for quite little monetary value flat type.
No touch is stuck in and does not have any physics contact when connecting the external read card apparatus, but utilizes induction and/or the such means of capacitive coupling that the signal of this card monetary value of expression is provided for external card reader.The example of no touch card can be seen in the U.S. Patent No. 5272596 of Honore etc. and Brazilian patent instructions PI9105585 and PI9201380.
Usually, till the storage card payment in advance value of money of preparing to use this card has run out.In case this amount of money is used up by the user, this card is recovered or abandons.For example, when being used for public telephone, buying this storage card with certain the predetermined monetary value that leaves in this card, and when using this card, from this monetary value, deduct.
For various types of payment in advance storage cards, when determining its practical application, the cost of card is a limiting factor.In general, only when the whole monetary value by this card representative exceeded the cost of this card itself, the use of prepayment storage card was just with practical value.Therefore, if can reduce the cost of card,, and enlarge the number of the potential application that may use the prepayment storage card just for distribution in many existing application field of using prepaid card has at present increased possibility than subsection (lower total monetary value) card.
Yet manufacturer is faced with very serious challenge, and in the oeverall quality that does not influence storage card, under the condition of reliability and durability, it is very difficult reducing production costs.What at present used raw-material character and production technology may cause storage card does not have elasticity and an embrittlement.Consequently, crooked this storage card may damage or destroy the part of this storage card between the general operating period.
In view of above-mentioned content, an object of the present invention is to produce a kind of storage card that can reduce overall cost.
Further purpose of the present invention provides the storage card that a kind of improved, cost with good reliability and durability reduces.
Above and other objects of the present invention, feature and advantage obtain by a kind of storage card is provided, and this jig has one by top film and end film and the soft combination substrate that forms between end film and top film and with the adhesion layer of its joint.The thickness of this combination substrate is preferably between 9 to 14 mils.A metal level is attached on the exposed surface of top film.This metal level preferably one have surface conductivity and be about 20 ohm every square sputter and apply nickel dam.Circuit layer is covered with metal level, forms one at least by the readable position of external read card apparatus on storage card.In addition, protective seam covers and protects the circuit layer of storage card.Also can there be printing mark at the front of storage card or the back side improving the attractive force of storage card, and furnish an explanation for the use of storage card.End film and top film are preferably all made by the so soft thermoplastic polymer of for example biaxial orienting polyethylene terephthalate.It is thin that the top film cans be compared to end film most.The thickness of top film is about 1 to 2 mil, and the thickness of end film is about 8 to 12 mils.
The laminated substrate of combination and the selection of film thickness provide a kind of storage card with good durability and reliability.And the flexible that this jig improves a lot makes this storage card used by the user and/or almost can both be crooked on each direction between storage period 180 ° and can not damage or destroy this storage card.The result is that this storage card can stand more undesired use and can also realize the function of its anticipation, runs out up to its monetary value.
In a most preferred embodiment of the present invention, the circuit layer of storage card is designed to deposit predetermined " radix " of certain value of allocating in advance, and when storage card by with and during radix value quilt " consumption ", reduce this radix for a long time and enduringly.Storage card preferably has point or the unit that a plurality of spaces separate and is suitable for being read by the readout equipment of outside.Uniaxially is converted to second readable state from first readable state but each of wishing circuit layer read a little all.The ability of this each point of unidirectional conversion makes storage card be deducted when using under the mode of safety, tamperproof.
Attached to the metal level of the exposed surface of top film preferably thickness less than the nickel dam of 0.5 micron (being preferably about 0.2 micron).For the readability of the unit that improves the no touch storage card, this nickel dam preferably has every square of about surface conductivity of 20 ohm.According to the present invention, nickel dam is preferably formed by the covering of the sputter on the film of top.This technology provides very all even reproducible metallic coating, and its quality significantly is better than other metal deposition.
Above-mentioned storage card is to adopt certain effective cost effective method to make, and makes this storage card can be widely used in various aspects, can keep its high-quality again.The best approach of making storage card comprises thin conductive metal layer is applied on the surface of mylar (film), by another surface laminated to one the thicker mylar of a bonding agent with this film, forms a flexible substrate then.The thin conductive metal layer that is equaled tin/lead (40%/60%) alloy by fusing point forms a circuit layer on substrate.Circuit layer comprises point or the unit that a plurality of spaces separate, and can be read by the no touch readout equipment of outside.Sealant with a protectiveness is applied on the conductive layer so that the protection unit of credit again.
Fig. 1 is a skeleton view according to storage card of the present invention;
Fig. 2 is the sectional view of this card of the line 2-2 intercepting in Fig. 1;
Fig. 3 is a sectional view that is used to form the substrate of the storage card among Fig. 1 and Fig. 2;
Fig. 4 is a skeleton view of storage card, and part is a sectional view, illustrates when producing circuit layer, and how masked and sensitization substrate is.
The similar Fig. 4 of Fig. 5 illustrates and remove the non-exposed region outward appearance of storage card afterwards from substrate.
The also similar Fig. 4 of Fig. 6 illustrates the storage card outward appearance after the second coating electrochemical deposition;
The similar Fig. 6 of Fig. 7 provides and remove the exposed area outward appearance of storage card afterwards from this film;
Fig. 8 is a process flow diagram, provides the step of the substrate method of storage card constructed in accordance.
Below in conjunction with accompanying drawing, introduce the present invention more fully, provide most preferred embodiment of the present invention.Yet the present invention can be embodied as many different forms, is not limited to specific embodiment given here; On the contrary, providing of these embodiment will make the present invention more detailed and complete, and will fully scope of the present invention be conveyed to the personnel that are familiar with this technology.Identical number is represented components identical all the time.
According to illustrated embodiment, the similar machine of card reader that proposes among soft contactless storage card 10 that is provided and the Brazilian patent instructions No.PI9201380 uses together, here as a reference.As shown in Figure 1, storage card 10 is generally the rectangular configuration with fillet.The overall dimension of storage card 10 is about 8.5cm (3.5 inches) * 5.25cm (2.25 inches), and its thickness is about 12 to 16 mils.The front and back of storage card 10 can have the design shown in the printing mark and/or 11 that adopts textual form.
As shown in Figure 2, storage card 10 forms from substrate 12, and substrate comprises by adhesion layer 18 end film 14 and top film 16 laminated together.One is applied to the exposed surface of top film 16 by high magnetic conductance metal (preferably nickel) thin layer of making 20.One is added on the nickel dam 20 by 22 of the thin layers of making than low-melting-point metal (for example tin/lead).Tin/lead layer has formed below the circuit layer with more detailed introduction.Protective seam 24 covers and protects this tin/lead layer 22 and provides a wear-resisting front for this card.Protective seam can be formed by suitable compound, for example epoxy resin.Protective seam 24 also can have printing (offset printing/offset printing) to identify for 11 (as shown in Figure 1), so that improve the attractive force of storage card 10 and necessary operation instruction is provided.
The end film 14 of present embodiment and top film 16 are to be made by durable and soft thin polymer film.What be particularly suitable for forming substrate is mylar, getable PACUR as Rexham industrial group on the market.End film 14 preferably has the thickness of about 10 mils.Top film 16 preferably has the thickness of about 2 mils.
Substrate 12 can produce by mode shown in Figure 8.Nickel dam 20 is spray deposited on a surface of top film 16 by sputter.The nickel dam 20 that sputter covers preferably less than 1.0 microns, it would be desirable 0.2 micron, so that a surface resistivity of about 20 ohm-sq is provided on thickness.Then, end film 14 and top film 16 are attached together the formation unitized construction.A kind of suitable adhesive for example based on polyurethane binder of solvent, is applied to the surface of the top film 16 relative with nickel dam 20, perhaps is applied on the surface of end film 14, perhaps affacts top film and end film simultaneously.Be added with adhesive films and be combined in laminating machine, heating and pressurizing makes bonding agent that thin layer is combined securely simultaneously.Resulting lamination base 12 is collected as a volume, then cuts into inch strips again.The cross section of substrate 12 as shown in Figure 3.
Fig. 4-Fig. 7 illustrates a kind of suitable method of making circuit layer 23, as introducing in Brazilian patent instructions No.P19201380 number.As shown in Figure 4, photosensitive layer 26 is added on the nickel dam 20.Comprise the clear area 30a of predetermined required mode and egative film or the mask 28 of 30b and be positioned on the photo-conductive film 26, this assembly is exposed to the open air under ultraviolet light, makes photosensitive layer 26 polymerization in exposing to the open air to ultraviolet zone by clear area 30a and 30b.Then, the non-polymeric district of photosensitive layer 26 is developed, and resulting structure as shown in Figure 5.Remaining polymeric area forms island district 32a and the 32b that is attached on the nickel dam 22.
As shown in Figure 6, tin/lead layer 22 is added on the nickel dam 20, and island district 32a and 32b prevent that as mask tin/lead layer is attached on these zones.In the present embodiment, tin/lead layer 22 applies through electrochemical electrolytic tank, and in electrolytic tank, storage card is a negative electrode, and electrolyte then is an anode.In this example, electrolyte is tin/lead salt solution that ratio is about 60% tin and 40% lead, makes the tin/lead layer 22 that is deposited have approximate eutectic composition.Low-intensity electric current in every square decimeter of 1 to 1.5 ampere of scope is used, so that about 4 to the 8 microns tin/lead layer 22 of deposit thickness.
After the electrolytic deposition of tin/lead layer 22, utilize chemical stripper solution to remove island district 32a and 32b, so that expose as shown in Figure 7 regional 36a and 36b.Resulting structure has formed readable unit or the position with fusibleness connection 38.Though only provide such unit 40 among the figure, being construed as this jig has a plurality of such unit, generally all arranges by row and row exactly.Then apply protective seam 24, so that cover and seal this circuit layer.As shown in Figure 1, protective seam 24 comprises the typographic(al) mark 11 that is applied by suitable printing technology, and for example offset printing or silk screen print method are printed on the front of protective seam 24 with these marks, also can be imprinted on the exposed surface of end film 14.Then, single storage card 10 is cut into the iso standard shape and detects.
Should be appreciated that the nickel dam 20 here can be made by the conductive material of other non-nickel, for example, conducting polymer can be used in the substrate.In addition, also may replace the tin/lead of layer in 22, as long as keep the conductance between first and second layers and the difference of fusing point with another kind of conductive material.
The storage card of being made by said method 10 is inserted in the induction readout equipment of certain outside, and for example the equipment of being introduced in Brazilian patent instructions No.PI9210380 number is located each unit in this card.These unit are in state first, non-minimizing at first, and in this state, fusibleness connects 38 contacts.For connecting 38, value, the fusibleness that deducts a unit in card can melt or destroy.Card-reading apparatus is realized this function by electric current being imported unit 40, and current concentration is connected on 38 in fusibleness, causes this connection fusing.Therefore, unit 40 is converted to second readable state by uniaxially.
Card-reading apparatus can detect the unit 40 that is under first readable state and be in difference between the unit 40 under second readable state.Adopt this method, the Card Reader function is determined the unit number under first readable state, therefore also can determine the number of monetary unit remaining on this card.When a monetary unit value " was used up ", card reader connected by this fusibleness of fusing, makes certain unit be converted to second readable state.Storage card 10 is available, up to deducting with the above-mentioned mode unit that it is all.
For the people who is familiar with this technology, will produce many ideas that relate to modification of the present invention and adopt other embodiment, because for them, can from the technology appearing at above-mentioned introduction and accompanying drawing, acquire benefit.Therefore, be construed as, the present invention is not limited to the specific embodiment introduced.Though used specific term, be not to limit to some extent just in order to do general description, various modifications and embodiment are included within the scope of claims subsequently.
Claims (19)
1. storage card comprises:
Thickness is about the soft combination substrate of 9 to 14 mils, described combination substrate comprises film at the bottom of the soft thermoplastic polymer, be laminated to a lip-deep soft thermoplastic polymer of film of described end top film, and be placed between film of the described end and the described top film and its adhesion layer that combines
Attached to the magnetic metallic layers on the exposed surface of described top film,
Cover described metal level and on this card, form the circuit layer of at least one position that can be read by the external read card apparatus, and
Cover and protect the protective seam of described circuit layer.
2. the described card of claim 1 is included in the printed layers that the front of card can be seen in addition.
3. the described card of claim 1, wherein, film of the described end and described top film respectively comprise a mylar, and film of the described end is thicker than described top film.
4. the described card of claim 3, wherein, described film is the biaxial orienting polyethylene terephthalate film that thickness is about 1 to 2 mil.
5. the described card of claim 4, wherein, film of the described end is the biaxial orienting polyethylene terephthalate film that thickness is about 8 to 12 mils.
6. the described card of claim 1, wherein, described metal level is a thickness less than 0.5 micron nickel dam.
7. the described card of claim 1, wherein, described metal level is that surface conductivity is about 20 ohm every square sputter spraying nickel dam.
8. the described card of claim 1, wherein, described circuit layer comprises the position of a plurality of separated by spaces, can be read by certain outside readout equipment, and each position comprises the device that can uniaxially be converted to second readable state from first readable state.
9. storage card comprises:
Thickness is about the soft combination substrate of 9-14 mil, described substrate comprises film at the bottom of the soft polyester, be in turn laminated to a lip-deep software polyester of film of described end top film, the thickness of described top film is about 1 to 2 mil, also comprise between film of the described end and described top film and its bonding agent that combines
Be attached exposed surface at described top film, thickness less than a metal level of 0.5 micron,
Cover the circuit layer of described metal level, described circuit layer comprises a plurality of separated by spaces positions that can be read by certain external read card apparatus, and each position comprises and can uniaxially be converted to the device of second readable state from first readable state, and
The protective seam that covers described circuit layer and can see in the front of card.
10. the described a kind of card of claim 9, wherein, film of the described end is the polyethylene terephthalate film of biaxial orienting.
11. the described a kind of card of claim 9, wherein, described metal level is that thickness is about 0.2 micron nickel dam.
12. the described a kind of card of claim 9, wherein, described metal card is that surface conductivity is about a kind of sputter spraying nickel dam of 20 ohm every square.
13. the described a kind of card of claim 9, wherein, described circuit layer comprises the position of a plurality of separated by spaces that can be read by the external read card apparatus, and each position comprises the device that can uniaxially be converted to two readable state from first readable state.
14. a storage card comprises:
Thickness is about the soft combination substrate of 12 mils, described combination substrate comprises the film of the soft end that is formed by the biaxial orienting polyethylene film, be in turn laminated to a lip-deep soft thermoplastic polymer top film of film of the described end, described top film comprises that thickness is about the biaxial orienting polyethylene terephthalate film of 1 to 2 mil, also comprise between film of the described end and top film and with its polyurethane binder that combines
Be attached to the exposed surface of described top film, thickness sprays nickel dam less than 0.5 micron sputter,
Cover the circuit layer of described nickel dam, described circuit layer comprises the position that the available induction current of a plurality of separation on this card reads, each position comprises that a fusibleness that can irreversibly fuse by applying enough big electric current connects, so that with this position from second state of first state exchange for being read from card by outside readout equipment, and
Cover and protect the protective seam of described circuit layer, described protective seam is included in the printing mark that the front of card can be seen.
15. form a kind of soft plastic substrate of storage card, described substrate comprises the film of the soft end that is formed by the biaxial orienting polyethylene film, be laminated to a lip-deep soft thermoplastic polymer top film of film of the described end, described top film comprises that thickness is about the biaxial orienting polyethylene terephthalate film of 1 to 2 mil, also comprise between film of the described end and top film and with its polyurethane binder that combines, and the exposed surface, thickness that are attached to described top film are less than a sputter spraying nickel dam of 0.5 micron.
16. the described a kind of substrate of claim 15, wherein said substrate thickness is about 12 mils.
17. form a kind of method of storage card, comprising:
A thin metal layer is applied on the surface of mylar;
The reverse side of described film is laminated on the thicker mylar;
On described thin conductive metal layer, form a circuit layer; And
Protective seam is applied on the described circuit layer.
18. the method for claim 17, wherein, the lip-deep described step that thin conductive metal layer is applied to mylar comprises sputter spraying nickel thin layer to 1 to a surface of the mylar of 2 mil thick, and described lamination step comprises and utilizes polyurethane binder that the described opposite of described film is laminated on the thicker mylar.
19. form a kind of method of storage card, comprising:
Thickness is sprayed to less than 0.5 micron nickel dam sputter on the surface of biaxial orienting polyethylene film of 1 to 2 mil thick;
The opposite of described film is laminated on the biaxial orienting polyethylene terephthalate film that thickness is 8 to 12 mils;
Form the position be suitable for a plurality of separated by spaces of being read by outside readout equipment on described thin conductive metal layer, each position comprises the device that can uniaxially be converted to second readable state from first readable state; And
Protective seam is applied on the described conducting stratum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95197726 CN1177409A (en) | 1995-01-27 | 1995-01-27 | Memory card and method for producing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95197726 CN1177409A (en) | 1995-01-27 | 1995-01-27 | Memory card and method for producing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1177409A true CN1177409A (en) | 1998-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95197726 Pending CN1177409A (en) | 1995-01-27 | 1995-01-27 | Memory card and method for producing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1177409A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100403335C (en) * | 2005-08-30 | 2008-07-16 | 资重兴 | Manufacture of storage card |
| CN101085509B (en) * | 2006-06-07 | 2010-06-09 | 株式会社迪思科 | Forming device and forming method for storing card |
| CN102609749A (en) * | 2012-03-03 | 2012-07-25 | 陈国平 | Flexible card including flexible embedded part and manufacturing method thereof |
| CN103854050A (en) * | 2012-12-06 | 2014-06-11 | 黑卡有限公司 | Transaction cards and associated methods |
| US9898694B2 (en) | 2012-05-30 | 2018-02-20 | Black Card Llc | Tri-layer transaction cards and associated methods |
-
1995
- 1995-01-27 CN CN 95197726 patent/CN1177409A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100403335C (en) * | 2005-08-30 | 2008-07-16 | 资重兴 | Manufacture of storage card |
| CN101085509B (en) * | 2006-06-07 | 2010-06-09 | 株式会社迪思科 | Forming device and forming method for storing card |
| CN102609749A (en) * | 2012-03-03 | 2012-07-25 | 陈国平 | Flexible card including flexible embedded part and manufacturing method thereof |
| CN102609749B (en) * | 2012-03-03 | 2016-07-27 | 陈国平 | Include flexible card and the manufacture method thereof of flexible inlaid pieces |
| US9898694B2 (en) | 2012-05-30 | 2018-02-20 | Black Card Llc | Tri-layer transaction cards and associated methods |
| CN103854050A (en) * | 2012-12-06 | 2014-06-11 | 黑卡有限公司 | Transaction cards and associated methods |
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