CN1178500A - Apparatus and method for preventing defects during lamination of materials - Google Patents
Apparatus and method for preventing defects during lamination of materials Download PDFInfo
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- CN1178500A CN1178500A CN 96192599 CN96192599A CN1178500A CN 1178500 A CN1178500 A CN 1178500A CN 96192599 CN96192599 CN 96192599 CN 96192599 A CN96192599 A CN 96192599A CN 1178500 A CN1178500 A CN 1178500A
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Abstract
An apparatus thermally laminates at least two materials together while minimizing wrinkles, ripples, curl, and color density loss in the laminate applying heat and pressure to the materials, by turning the laminate in a first direction away from a hotter laminating member causing a curvature of the laminate, and by turning the laminate in a second direction which reverses the curvature of the laminate.
Description
Invention field
The present invention relates generally to a kind of apparatus and method that prevent to produce the defective such as fold and wrinkle in the material lamination process.Especially, the present invention can relate to and a kind ofly is pressed on a time-out will going up color material layer, prevents or remove the apparatus and method of the defective such as fold and wrinkle in these materials.
Background of invention
The heat lamination action need treats that to two or more laminated material applies heat and pressure.These materials can be single sheet or volume width of cloth shape.A target during lamination is to apply enough heats and pressure, with the complete layer press operation.It is desirable to, should not cause too much contraction or expansion, and realize this target under fold, wrinkle or the curling situation.
During material the colouring material that lamination such as typography is used, may produce specific defective.These extra defectives for example comprise ripple, reticulate pattern, color density loss and microbubble.Ripple is a kind of of wrinkle, and it tilts diagonally along the length of material, therefore is known as " Christmas tree " ripple.Reticulate pattern is the another kind of defective that the wrinkle by many intersections forms, and it makes the appearance of involved area be difficult to see.Color density loss is meant that undesirable fade and/or inconsistent appears in the color in overlapping layers.
Taked several method to solve fold and other defective that is caused by heat lamination technology substantially.US Patent 4,861,409 have described a kind of heat lamination technology, but the distance between its automatically regulating two contacts diaphragm and the hot roll.Even it is constant also can to guarantee to be delivered to the heat of diaphragm like this when the laminated yarn velocity variations.Constant heat is meant not producing provides enough bond strengths under the overheated situation, because overheated meeting makes film wrinkled and fogs.The invention of the present invention it is called this invention lamination begin the back or lamination stop before the time particularly useful.But this method does not solve wrinkling problem satisfactorily, does not solve any one in the above-mentioned other problem yet.
US Patent 4,946,640 have described a kind of device, and it has a guide surface, and laminated material is applied vacuum.Vacuum produces a basic pulling force uniformly that strides across the laminated material width.This pulling force of invention person can be eliminated the wrinkle that will inevitably result from guide surface.Yet too complexity is too expensive comparatively speaking for this method, relates to the extra cost that adds and safeguard vacuum feed equipment.
Typography is easy to generate ripple, reticulate pattern and color density loss especially with material.The lamination of some typography material relates generally to four kinds of colors are transferred on a piece of paper substrate from four film background color sheets (bluish-green, scarlet, yellow and black).First kind of color chips is laminated on the substrate and forms a specimen page, make its exposure then, to form one first kind of color image.Then, the color chips backing is peelled off from the color chips that is positioned at the substrate back, stayed a part of colored materials at least.Remaining three kinds of color can be transferred on the substrate and exposure in the same way.This that produces on the substrate four color pictures can also be formed at earlier on the transfer printing sheet, are transferred on the substrate from the transfer printing sheet more at last.Color chips and transfer printing sheet generally comprise a mylar backing, and wherein, substrate generally comprises a paper backing.
Being used for the existing apparatus and method of these materials of lamination can't carry out the heat lamination material satisfactorily, makes wrinkle simultaneously, curls, ripple, reticulate pattern and color density loss minimization.
Brief summary of the invention
The present invention has overcome above these problems, provides a kind of and has made described defective drop to minimal apparatus and method.One embodiment of the invention comprise that one is used for the heat lamination material to form an overlapping layers and to be used to guide the device of this overlapping layers.This device has first heating arrangement that a ground floor pressure part and is used for the ground floor pressure part is heated to one first temperature.Be provided with a second layer pressure part corresponding to the ground floor pressure part,, material be heated to laminating temperature, and make first and second laminate members exert pressure and form overlapping layers material so that material passes between first and second laminate members.First guide is provided with one first guide corresponding to first and second laminate members, so that can turn to the first direction that separates with the ground floor pressure part with this overlapping layers.Make overlapping layers turn to first direction can make this overlapping layers have a radian.This second guide is provided with one second guide corresponding to first guide, so that can make overlapping layers turn to second direction.Overlapping layers is turned to second direction from first direction, make radian conversely.
Another embodiment comprises that one is used for the heat lamination material to form an overlapping layers and to be used to guide the device of this overlapping layers.This device has the device that material is heated to second material temperature from first material temperature.Also has the device that material is exerted pressure.This device for exerting functionally is connected in heating arrangement, makes pressure material has been heated to first temperature at heating arrangement and is applied on the material when above, to form overlapping layers.This device for exerting is arranged so that overlapping layers is to advance along original direction when being applied in pressure.First guide is provided with one first guide corresponding to heating arrangement and device for exerting, so that can turn to overlapping layers the first direction that is different from original direction.Second guide is provided with one second guide corresponding to first guide, so that can turn to second direction by overlapping layers.Second direction is different with first direction, and is identical with original direction.
Another embodiment comprises that one is used for the heat lamination material to form an overlapping layers and to be used to guide the device of this overlapping layers.This device have be subjected to hot-rolling on one and be provided with than be subjected on this hot-rolling low be subjected to hot-rolling once.Material can along be subjected on original direction navigates on hot-rolling and under be subjected between the hot-rolling, make should on be subjected to hot-rolling and material is exerted pressure and heat by hot-rolling down, with the formation overlapping layers.To be subjected to hot-rolling to be heated to a temperature that is subjected to hot-rolling on being lower than down.Corresponding on be subjected to hot-rolling and under be subjected to hot-rolling to be provided with one first guide so that this first guide with overlapping layers downwards with on separated by hot-rolling, and turn to towards the first direction that is subjected to hot-rolling down.Be provided with one second guide corresponding to first guide, so that this second guide turns to overlapping layers and the second direction that separated by hot-rolling down.
Another embodiment comprises that one is used for the heat lamination material to form an overlapping layers and to be used to guide the device of this overlapping layers.This device has the lamination assembly that a support one is supported on this support.Support can have an assembly surface, and material can be striden and is located on this surface.Be provided with a ground floor pressure part adjacent to this assembly surface.Has the device that the ground floor pressure part is heated to one first temperature.Be provided with a second layer pressure part corresponding to assembly surface and ground floor pressure part, so that material can begin to move from assembly surface, and by between first and second laminate members, thereby put on this material when making heat and pressure between material is by first and second laminate members, to form overlapping layers.At the support upper support one guidance set is arranged corresponding to laminated compenent, with receive and guiding from the overlapping layers of laminated compenent.This guidance set has first guide that is provided with corresponding to first and second laminate members, so that this first guide can turn to overlapping layers the first direction that turns over from the ground floor pressure part.Overlapping layers is turned to first direction, make this overlapping layers have a radian.This second guide is provided with one second guide corresponding to first guide, so that can turn to second direction with overlapping layers.Forward overlapping layers to second direction from first direction, make this radian conversely.
Another embodiment comprise one with the material thermosphere be pressed on form together an overlapping layers and the guiding this overlapping layers method.This method comprises a ground floor pressure part is heated to first temperature.Another operation is that a second layer pressure part is heated to one second temperature, and this second temperature is lower than first temperature.Another operation comprises passes through between first and second laminate members material.Be provided with a second layer pressure part corresponding to the ground floor pressure part, make first and second laminate members heat and pressure can be put on the material, to form overlapping layers.Another operation comprises that the overlapping layers that will come between first and second laminate members turns over from the ground floor pressure part along first direction.Overlapping layers is turned to first direction, make this overlapping layers have a radian.Another operation comprises overlapping layers is turned to second direction.Forward overlapping layers to second direction from first direction, make this radian conversely.
Another embodiment comprises that is pressed on one first colouring material piece thermosphere a method that forms an overlapping layers and this overlapping layers of upset on the one second colouring material piece.This method comprises a ground floor pressure part is heated to first temperature.Another operation comprises a second layer pressure part is heated to one second temperature that this second temperature is lower than first temperature.Another operation comprises makes the first and second colouring material piece by between ground floor pressure part and the second layer pressure part.Second layer pressure part is provided with corresponding to the ground floor pressure part, makes when material passes through between first and second laminate members, and heat and pressure are applied on the first and second colouring material piece, to form overlapping layers.Another operation comprises that the overlapping layers that will come between first and second laminate members turns over from the ground floor pressure part along first direction, makes this overlapping layers have a radian.Another operation comprises overlapping layers is turned to second direction.Forward overlapping layers to second direction from first direction, make this radian conversely.
The accompanying drawing summary
By following description and accompanying drawing, will be more readily understood above-mentioned advantage of the present invention, structure and operation, in the accompanying drawing:
Fig. 1 is the lateral plan of one embodiment of the invention, and this embodiment comprises two laminating rolls and two guides, two sheet materials before between the insert layer knobbling rolls shown in it;
Fig. 2 is a lateral plan embodiment illustrated in fig. 1, and two sheet materials are between the lamination roll shown in it;
Fig. 3 is the block diagram of embodiment illustrated in figures 1 and 2;
Fig. 4 is perspective view of an embodiment of the present invention shown in Fig. 1,2 and 3, wherein also comprises a support.
Preferred embodiment is described in detail
Among Fig. 1, material 10 is shown just is being inserted into a heat lamination device 12.Can material 10 be inserted this heat lamination device 12 with hand or with the driven roller (not shown).Shown material 10 comprises two colourings material, substrate 14 and color chips 16.The material of other kind can carry out lamination by similar mode.
This heat lamination device 12 comprises a ground floor pressure part 18, a second layer pressure part 20, one first guide 22 and one second guide 24.Shown laminate member 18 is one first rolls, but also can be with the laminate member of other form, for example, and a series of little rolls, one or more belt or the like.Shown second layer pressure part 20 is one second rolls, but also may be other similar alternate embodiment.
First and second laminate members 18,20 can be heated to identical or different temperature, and drive them to transmit material 10.First and second laminate members 18,20 can be covered with polymer coated polymerization cylindricality core, metal column core by a kind of, or a kind of metal cartridge makes, as well known in the field in this technique.For example, ground floor pressure part 18 can comprise that one is covered with the aluminium core of 5 millimeters silicone coatings, and second layer pressure part 20 comprises that one is covered with low stickiness surface as SilverStone
TMThe aluminium core.
The mutual alignment of first and second laminate members 18,20 can be such, and promptly when material 10 passed through between first and second laminate members 18,20, first and second laminate members 18,20 put on heat and pressure on this material 10.When material 10 also was not between first and second laminate members 18,20, heat lamination device 12 can make first and second laminate members 18,20 separate, so that the insertion of material 10.This front portion that equally also allows material under situation about not heated with pressurized by first and second laminate members 18,20.Can prevent like this above anterior of adhering to and being wrapped in first and second laminate members 18,20, and guarantee to guide the front portion to leave ground floor pressure part 18 more easily.
Shown ground floor pressure part 18 is topping rolls, and shown second layer pressure part 20 is bottom rolls.In addition, ground floor pressure part 18 might not align in vertical direction with second layer pressure part 20.Shown orientation is to be partial to about 30 degree with respect to vertical direction.This deflection can be utilized gravity, helps advancing downwards when material 10 comes out between first and second laminate members 18,20.But other different orientation also is possible.
Among Fig. 2, shown material 10 just passes through between first and second laminate members 18,20 with the rotation of first and second laminate members 18,20.First and second laminate members 18,20 put on heat and pressure on the material 10, and forming one can be from the overlapping layers 26 that shifts out between first and second laminate members 18,20.When material 10 passes through between first and second laminate members 18,20, we can say that material 10 is to advance along original direction.
Heat contacts nip location 28 places with pressure one and puts on the material 10.This contact nip location 28 is contact zones that limited by the flat part 30 of the width of material 10 and first and second laminate members, 18,20 contact materials 10.What the material that for example, 30 inches (76.2 centimetres) are wide and the flat part 30 of about 0.20 inch (0.5 centimetre) can form that the contact zone is about 6.0 sq ins (38.1 sq cm) contacts nip location 28.
Some kinds of specific materials of embodiment energy heat lamination illustrated in figures 1 and 2 comprise MatchPring II
TMWith MatchPring III
TMMaterial (the 3M company of Minnesota State St.Paul produces).For example, if want lamination MatchPring III
TMMaterial, verified, the range of temperatures of ground floor pressure part should be about (between 266 and 311 Degrees Fahrenheits) between 130 and 155 degrees centigrade, the range of temperatures of second layer pressure part 20 should be about (between 140 and 176 Degrees Fahrenheits) between 60 and 80 degrees centigrade, so that sufficient lamination effect (color material in the color chips 16 are sufficiently bonded to substrate 14) to be provided, and make above mentioned defective reduce to minimum.
The top of ground floor pressure part 18 range of temperaturess preferably can make the air entrapment minimum, and the bottom of this range of temperatures preferably can make the life-span of ground floor pressure part 18 reach the longest, makes the dimensional stability of overlapping layers 26 the highest.Therefore, the temperature of ground floor pressure part can preferentially be selected the stricter scope in (between 140 to 176 Degrees Fahrenheits) between 138 and 146 degrees centigrade for use.
The top of second layer pressure part 20 range of temperaturess preferably can guarantee enough lamination effects at least, and ripple and reticulate pattern preferably can be reduced in the bottom, and makes dimensional stability the highest.Therefore, can preferentially select stricter range of temperatures for use in (between 150 and 171 Degrees Fahrenheits) between 66 and 77 degrees centigrade.More particularly, when ground floor pressure part 18 remains in 146 degrees centigrade (about 295 Degrees Fahrenheits), when second layer pressure part remains in the temperature of 68 degrees centigrade (about 155 Degrees Fahrenheits), produce suitable and up-to-standard result.
Except at the heat that is applied under the said temperature scope on the material 10, first and second laminate members 18,20 are also exerted pressure to these materials 10.Verified, be actv. at the range of pressure of (between the 30 and 36 pounds/sq in) between the 2.1 and 2.52 kilograms/sq cm, still, the more wide region between 15 and 50 pounds/sq in also is feasible.For the lamination of l Water Paper substrate, for example when paper substrate had been in a high humidity environment, strict range of pressure may be particularly important.
Above-mentioned pressure is applied to a kind of method on 76.2 centimetres (30 inches) wide material 10, all applies 100 pounds downward force (as shown in Figure 3) as two bearings ground floor pressure part 18.Certainly, the power to bearing can upwards be applied on the bearing of second layer pressure part 20.
When first and second laminate members 18,20 are used as roll, can be on them cladding, to reduce defective as far as possible.During about 3.35 inches of, diameter 18 wide about 31.8 inches when the ground floor pressure part, the preferable coating on this ground floor pressure part 18 is about 0.005 inch (to diameter).During about 3.35 inches of, diameter 20 wide about 31.8 inches when second layer pressure part, the preferable coating on this second layer pressure part 20 is about 0.005 inch (to diameter).
Above-mentioned material 10 is transmitted in the speed of (in above-mentioned temperature and pressure scope) between first and second laminate members 18,20 can be between 1.27 and 1.65 meters/minute (about 50 to 65 inch per minutes).The combination that has realized that temperature, pressure and transfer rate can have nothing in common with each other with different material (for example, the thickness of the chemical stickiness of material or material backing).
The first shown guide 22 is arranged so that this first guide 22 can turn over overlapping layers 26 from ground floor pressure part 18, in case ground floor pressure part 18 heats overlapping layers 26 significantly after overlapping layers 26 shifts out contact nip location 28.In other words, the position of first guide 22 can be controlled ground floor pressure part 18 and be applied to heat on the overlapping layers 26.This makes change in size reduce and suitable (make in the polychrome colouring color correspondingly aim at color).This also can make the color density loss of material 10 reach minimum, and this is for particularly important the special material that carries out lamination under high humidity environment.
Overlapping layers 26 is turned over from ground floor pressure part 18, make this overlapping layers 26 advance, and have a radian, be more preferably a single radian along first direction.In one embodiment, first guide 22 can be by forwarding overlapping layers 26 to the variation that first direction produces about 30 degree directions.First direction can be towards second layer pressure part 20, make overlapping layers near or even contact second layer pressure part 20.The second layer pressure part 20 that is lower than ground floor pressure part 18 with temperature contacts, can defective reduced in size.
First guide can comprise a released part 32 and a leader 34.If overlapping layers 26 is bonded in or follows closely in ground floor pressure part 18, released part 32 can be peeled off ground floor pressure part 18 with this overlapping layers 26, and leader 34 can turn over this overlapping layers 26 from ground floor pressure part 18.If overlapping layers 26 is not bonded on the ground floor pressure part 18, leader 34 still can turn over overlapping layers 26 from ground floor pressure part 18.Perhaps, if overlapping layers 26 follows second layer pressure part 20 closely when shifting out between first and second laminate members 18,20, will have a radian then for overlapping layers.
Released part 32 can have blade, and keeps being against or being adjacent to ground floor pressure part 18.Can select the tool point angle of released part 32, make it help to realize required first direction.For example, released part 32 can be by a kind of such as Teflon
TMAnd so on low-friction material make, or coat a kind of like this material, with anti-scratch overlapping layers 26 or by its adhesion.Equally, leader 34 can be by a kind of such as Teflon
TMAnd so on low-friction material make, perhaps, make, and be covered with low-friction material by a metal or plastic sheet.
The second shown guide 24 is flat, and is provided with corresponding to first guide 22 with corresponding to second layer pressure part 20, so that overlapping layers 26 is turned over from second layer pressure part 20 along second direction.If overlapping layers 26 shifts out between first and second laminate members 18,20, be not to be overturn or crooked by first guide 22 (for example only following near second layer pressure part 20 trend by overlapping layers 26), then second guide 24 still can make overlapping layers 26 turn to second direction.By forwarding overlapping layers 26 to second direction from first direction, in one embodiment, second guide 24 can produce the variation of about 30 degree directions, or roughly getting back to overlapping layers 26 is transferred to original direction before the first direction.As shown in the figure, the radian that second guide 24 makes overlapping layers 26 conversely, even overlapping layers 26 still is in following time of temperature of a rising because of being subjected to 18,20 heating of first and second laminate members, also can be like this.Radian and radian conversely make overlapping layers 26 afterwards advance along the S-shaped route of a cardinal principle between by first and second laminate members 18,20.The radius of radian conversely should be enough little, reducing the distortion of overlapping layers 26, but should be enough big, be parallel to the overlapping layers 26 that excessively stretches on the axis of direct of travel that overlapping layers passes heat lamination device 12 to be unlikely.Shown radius in order to anti-radian that above-mentioned certain material is worked is between 0.050 and 0.102 meter (about 2 to 4 inches).Preferable radius is between 0.064 and 0.089 meter (2.5 to 3.5 inches).
Can make by a kind of low-friction material as first guide, 22, the second guides 24, or make, and be covered with a low-friction material (Teflon for example by a kind of metal or plastic sheet
TM).Although the first and second shown guides 22,24 are all fixed, have realized that guide 22,24 can be movable.In addition, have realized that to adopt and to make overlapping layers 26 produce identical radian measure and the difform guide of anti-radian or different guide piecees.
Make overlapping layers 26 along direction of transfer (as shown in the figure) bending by following the lamination effect closely, can not allow overlapping layers 26 from being out of shape by the formed single curved surface of single buckled layer press operation.By making overlapping layers 26 along direction of transfer (as shown in the figure) bending, follow the lamination effect then closely and make radian conversely, can prevent that defective from forming, or the projection or the recessed people on overlapping layers 26 surfaces partly back into single curved surface.
Although shown overlapping layers 26 is to be bent downwardly and to leave the ground floor pressure part 18 of heat earlier, and then crooked and produce an oppositely directed radian, can only form opposite radian (first K/UP).For reaching this opposite method, prevent that than the heat lamination parts or by the laminated parts are become than the heat lamination parts overlapping layers 26 from may be comparatively desirable with contacting than the heat lamination parts by isolating.
Among Fig. 4, heat lamination device 12 illustrated in figures 1 and 2 is the part of a bigger device 36.This is the bigger device 36 lamination assembly 40 that comprises a support 38 and be supported on this support 38 more.Laminated compenent 40 comprises an assembly surface 42, and material 10 can be striden and is located on this surface.Ground floor pressure part 18 is provided with adjacent to assembly surface 42.One first heating arrangement (not shown) is heated to first temperature with the ground floor pressure part.Be provided with a second layer pressure part 20 corresponding to assembly surface 42 and ground floor pressure part 18, make material 10 can leave assembly surface 42 and by between first and second laminate members 18,20, and put on this material 10 when making heat and pressure between material 10 is by first and second laminate members 18,20.One second heating arrangement (not shown) can heat second layer pressure part 20.As mentioned above, heat and the pressure that puts on the material 10 has formed overlapping layers 26.
Support 38 is supported with a guidance set 44, and it is provided with corresponding to laminated compenent 40, with the overlapping layers 26 of guiding from laminated compenent 40.This guidance set comprises one first guide 22, be provided with corresponding to first and second laminate members 18,20, so that first guide 22 can will turn over from ground floor pressure part 18 along first direction from the overlapping layers 26 that shifts out between first and second laminate members 18,20, and make this overlapping layers 26 have a radian.Be provided with one second guide 24 corresponding to first guide 22, so that overlapping layers 26 turns to second direction.Forward overlapping layers to second direction from first direction, can make overlapping layers 26 have conversely a radian.
Be provided with a groove 46 corresponding to second guide 24, be used to admit and keep being subjected to overlapping layers 26 after second guide 24 turns to.
It is contemplated that other embodiment similar to the aforementioned embodiment, they should be considered to a part of the present invention.It is also contemplated that other embodiment that is suitable for heat lamination other material except that last color chips, they also should be considered to a part of the present invention.
Claims (10)
1. one kind is used for the heat lamination material to form an overlapping layers and to be used to guide the device of this overlapping layers, comprising:
One ground floor pressure part;
Be used for the ground floor pressure part is heated to first heating arrangement of one first temperature;
A second layer pressure part that is provided with corresponding to the ground floor pressure part so that material passes between first and second laminate members, is heated to a lamination temperature with material, and makes first and second laminate members exert pressure and form overlapping layers material;
One first guide that is provided with corresponding to first and second laminate members so that first guide can turn to the first direction that separates with the ground floor pressure part with this overlapping layers, wherein, makes overlapping layers turn to first direction to make this overlapping layers have a radian;
One second guide that is provided with corresponding to first guide so that this second guide can turn to overlapping layers second direction, wherein, forwards overlapping layers to second direction from first direction, makes radian conversely.
2. device as claimed in claim 1 is characterized in that, comprises that also one is used for second layer pressure part is heated to second heating arrangement that is lower than second temperature of first temperature.
3. device as claimed in claim 1 is characterized in that, the ground floor pressure part is first roll, and second layer pressure part is second roll.
4. device as claimed in claim 1 is characterized in that, first and second laminate members can be exerted pressure to material in a contact nip location, and first guide is arranged in overlapping layers and after contacting nip location the ground floor pressure part is left in the overlapping layers guiding.
5. device as claimed in claim 1 is characterized in that, puts on pressure on the material between 2.10 and 2.52 kilograms/sq cm.
6. device as claimed in claim 2 is characterized in that, first temperature is between 130 and 155 degrees centigrade, and second temperature is between 60 and 80 degrees centigrade.
7. device as claimed in claim 1 is characterized in that, first and second guides be arranged to make overlapping layers from first and two laminate members between shift out the back and advance along a roughly S-shaped route.
8. device as claimed in claim 1 is characterized in that, second guide is arranged so that the radius of radian conversely is enough little, so that the distortion minimum of overlapping layers, but should be enough big, so that the stretching minimum of overlapping layers.
9. device as claimed in claim 1 is characterized in that, first guide is arranged to guide overlapping layers to be against on the second layer pressure part, and the length that makes second layer pressure part contact overlapping layers is greater than the ground floor pressure part.
10. device as claimed in claim 1 is characterized in that, first and second guides contacted overlapping layers before overlapping layers significantly is cooled to below the laminating temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96192599 CN1178500A (en) | 1995-03-16 | 1996-02-06 | Apparatus and method for preventing defects during lamination of materials |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/405,531 | 1995-03-16 | ||
| CN 96192599 CN1178500A (en) | 1995-03-16 | 1996-02-06 | Apparatus and method for preventing defects during lamination of materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1178500A true CN1178500A (en) | 1998-04-08 |
Family
ID=5128362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96192599 Pending CN1178500A (en) | 1995-03-16 | 1996-02-06 | Apparatus and method for preventing defects during lamination of materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1178500A (en) |
-
1996
- 1996-02-06 CN CN 96192599 patent/CN1178500A/en active Pending
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