CA2054815A1 - Apparatus for applying an adhesive substance pattern at precise locations on a non-adherent surface for transfer to a fabric - Google Patents
Apparatus for applying an adhesive substance pattern at precise locations on a non-adherent surface for transfer to a fabricInfo
- Publication number
- CA2054815A1 CA2054815A1 CA 2054815 CA2054815A CA2054815A1 CA 2054815 A1 CA2054815 A1 CA 2054815A1 CA 2054815 CA2054815 CA 2054815 CA 2054815 A CA2054815 A CA 2054815A CA 2054815 A1 CA2054815 A1 CA 2054815A1
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- Prior art keywords
- adhesive
- sheet
- pattern
- granular
- belt
- Prior art date
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Abstract
APPARATUS FOR APPLYING AN ADHESIVE SUBSTANCE PATTERN AT
PRECISE LOCATIONS ON A NON-ADHERENT SURFACE FOR TRANSFER
TO A FABRIC
Abstract of the Disclosure An apparatus for applying a fine granular adhesive pattern at a precise location on a non-adherent surface for transfer to a sheet material. An adhesive applicator having a pattern dispensing device applies an oriented quantity of granular adhesive substance on the non-adherent surface. The adhesive substance is then heated to melt the adhesive on the surface and then the sheet material is oriented over the melted adhesive pattern to tack the adhesive pattern to the sheet material. The material and the adhesive are then pressed or fused together and the adhesive and sheet material is separated from the support surface, after the adhesive has cooled.
PRECISE LOCATIONS ON A NON-ADHERENT SURFACE FOR TRANSFER
TO A FABRIC
Abstract of the Disclosure An apparatus for applying a fine granular adhesive pattern at a precise location on a non-adherent surface for transfer to a sheet material. An adhesive applicator having a pattern dispensing device applies an oriented quantity of granular adhesive substance on the non-adherent surface. The adhesive substance is then heated to melt the adhesive on the surface and then the sheet material is oriented over the melted adhesive pattern to tack the adhesive pattern to the sheet material. The material and the adhesive are then pressed or fused together and the adhesive and sheet material is separated from the support surface, after the adhesive has cooled.
Description
BACKGROUND OF INVENTION
Field of the Invention The present invention relates to an apparatus for applying a fine granular adhesive substance a~ a precise location on a piece of sheet material, such as a piece of fabric having a predetermined shape or a sheet of fabric so that the fabric and the adhesive can be fused together.
Description of Prior Art In my U.S. Patent 4,347,955 issued September 7, 1982 and Canadian Patent 1,143,394 issued March 22, 1983, I disclose a machine for tacking a lining on a piece of fabric and wherein the fabric is required to be creased in peripheral portions about the liner fabric. The present invention eliminates the necessity of using special creasing and tacking lining material and increases the scope of application of the creasing operation by using any lining, whether fusable or regular, or eliminate totally or partially the use of lining, since the thermoplastic resin, as used in the present invention, will adhere directly on the facing fabric and only at the areas which are needed along the peripheral portions along the creased edge. Furthermore, the present invention will save considerable expense and achieve thinner and better quality creased and fused garment parts, particularly in the fabrication of collar bands, cuffs, epaulettes, flaps, pockets, etc.
SUMMARY OF INVENTION
It is therefore a feature of the present invention to provide a method and an apparatus for applying a fine granular adhesive substance at a precise location on a piece of sheet-like material having a predetermined shape and wherein this is effected by depositing a pattern of fine granular adhesive substance on a non-adherent surface which is then heated to melt the adhesive whereby to tack a fabric piece onto the support surface so that the fabric piece can be scraped off after it has been cooled to room temperature and fused with the adhesive substance or further adhesive and pieces of fabric.
Another feature of the present invention is to provide a method and an apparatus for applying a fine granular adhesive substance at a precise location on a piece of sheet-like material by depositing the fine granular adhesive on a non-adherent surface of an endless ~;
belt wherein a fabric piece is oriented on an adhesive pattern deposited on the belt and then fused and later scraped off the belt after it has been cooled and wherein the method utilizes a continuous indexing process. ; :~ -Another feature of the present invention is to : ~ .
provide a method and apparatus for applying a fine:~
granular adhesive substance at a precise location on a piece of sheet-like material and wherein the density of the deposit is adjustable.
According to the above features, from a broad aspect, the present inventlon provides an apparatus for applying a fine granular adhesive substance at a precise locatlon on a piece of sheet-llke material haviny a ~:;
. ~
predetermined shape. The apparatus comprises an adhesive applicator having pattern means to apply an oriented quantity of the granular adhesive substance on a non-adherent surface. Heat means is provided to melt the adhesive on the surface. Means is provided to apply the piece of sheet-like material in an oriented manner over the melted adhesive to tack the sheet-like material to the non-adherent surface. Fusing means is provided to fuse the adhesive to the sheet-like material. Scraping means is provided to remove the tacked sheet-like material fused with the adhesive from the non-adherent surface after the adhesive has cooled.
According to a still further broad aspect of the present invention, there is provided a method of applying a fine granular adhesive substance at a precise location on a piece of sheet-like material having a predetermined shape. The method comprises applying an oriented quantity of the granular adhesive on a non-adherent surface. The adhesive thus applied is then melted on the surface and a piece of sheet-like material is positioned on the adhesive in an oriented manner to tack the material to the surface. The material and the adhesive are then fused together and scraped of~ -the non-adherent surface after the adhesive has cooled~
BRIEF DESCRIPTION OF DRAWINGS
A preferred embodiment of the present invention will now be described with reference to the example thereof as illustrated in the accompanying drawings in which: ~
Field of the Invention The present invention relates to an apparatus for applying a fine granular adhesive substance a~ a precise location on a piece of sheet material, such as a piece of fabric having a predetermined shape or a sheet of fabric so that the fabric and the adhesive can be fused together.
Description of Prior Art In my U.S. Patent 4,347,955 issued September 7, 1982 and Canadian Patent 1,143,394 issued March 22, 1983, I disclose a machine for tacking a lining on a piece of fabric and wherein the fabric is required to be creased in peripheral portions about the liner fabric. The present invention eliminates the necessity of using special creasing and tacking lining material and increases the scope of application of the creasing operation by using any lining, whether fusable or regular, or eliminate totally or partially the use of lining, since the thermoplastic resin, as used in the present invention, will adhere directly on the facing fabric and only at the areas which are needed along the peripheral portions along the creased edge. Furthermore, the present invention will save considerable expense and achieve thinner and better quality creased and fused garment parts, particularly in the fabrication of collar bands, cuffs, epaulettes, flaps, pockets, etc.
SUMMARY OF INVENTION
It is therefore a feature of the present invention to provide a method and an apparatus for applying a fine granular adhesive substance at a precise location on a piece of sheet-like material having a predetermined shape and wherein this is effected by depositing a pattern of fine granular adhesive substance on a non-adherent surface which is then heated to melt the adhesive whereby to tack a fabric piece onto the support surface so that the fabric piece can be scraped off after it has been cooled to room temperature and fused with the adhesive substance or further adhesive and pieces of fabric.
Another feature of the present invention is to provide a method and an apparatus for applying a fine granular adhesive substance at a precise location on a piece of sheet-like material by depositing the fine granular adhesive on a non-adherent surface of an endless ~;
belt wherein a fabric piece is oriented on an adhesive pattern deposited on the belt and then fused and later scraped off the belt after it has been cooled and wherein the method utilizes a continuous indexing process. ; :~ -Another feature of the present invention is to : ~ .
provide a method and apparatus for applying a fine:~
granular adhesive substance at a precise location on a piece of sheet-like material and wherein the density of the deposit is adjustable.
According to the above features, from a broad aspect, the present inventlon provides an apparatus for applying a fine granular adhesive substance at a precise locatlon on a piece of sheet-llke material haviny a ~:;
. ~
predetermined shape. The apparatus comprises an adhesive applicator having pattern means to apply an oriented quantity of the granular adhesive substance on a non-adherent surface. Heat means is provided to melt the adhesive on the surface. Means is provided to apply the piece of sheet-like material in an oriented manner over the melted adhesive to tack the sheet-like material to the non-adherent surface. Fusing means is provided to fuse the adhesive to the sheet-like material. Scraping means is provided to remove the tacked sheet-like material fused with the adhesive from the non-adherent surface after the adhesive has cooled.
According to a still further broad aspect of the present invention, there is provided a method of applying a fine granular adhesive substance at a precise location on a piece of sheet-like material having a predetermined shape. The method comprises applying an oriented quantity of the granular adhesive on a non-adherent surface. The adhesive thus applied is then melted on the surface and a piece of sheet-like material is positioned on the adhesive in an oriented manner to tack the material to the surface. The material and the adhesive are then fused together and scraped of~ -the non-adherent surface after the adhesive has cooled~
BRIEF DESCRIPTION OF DRAWINGS
A preferred embodiment of the present invention will now be described with reference to the example thereof as illustrated in the accompanying drawings in which: ~
2 ~
FIGURE 1 iS a simpli~ied schematic view illustrating the method and apparatus of the present invention;
FIGURE 2 is a section view illustrating the construction of the granular adhesive applicator;
FIGURE 3 is a view similar to Figure 2 but showing the applicator in a different mode;
FIGURE 4 is a perspective view showing the construction of the screen frame with the open mesh dispensing pattern;
FIGURE 5 is a simplified schematic view showing an alternative construction of the apparatus wherein the support surface is a transfer table; and FIGURE 6 is a perspective view of a modified apparatus for applying a plurality of glue patterns on a fabric sheet fed from a roll of fabric.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring now to the drawings, and more particularly to Figure l, there is illustrated the method and apparatus for applying an adhesive substance at precise locations on a fabric piece so as to fuse them together. The apparatus comprises a support surface l0, herein the top surface of an endless belt having a non-adherent top surface and driven by suitable drive means 12 as is well known ln the art. An adhesive applicator 13 contains thereln a quantity of fine granular adhesive substance, such as a thermoplastic resin 14, and deposits same ln an orlented quantity, as shown at 15, on the support surface l0 positioned thereunder.
A control indexing means 16 controls the drive 12 to displace the deposited pattern of adhesive over a hot plate element 17 where the adhesive will melt and tack itself to the support surface 10 of the belt to form a melted pattern film of adhesive 19. A piece of sheet-like material having a predetermined configuration is then oriented and deposited over the melted adhesive 19 by suitable means so that the material is tacked to the belt.
The control device 16 then actuates the drive 12 to move the tacked material piece 18 to a fusing station 20 or else to a further adhesive applicator device 13' where a further pattern of granular adhesive 15' is deposited on the top surface of the sheet-like material 18. The belt is then displaced to a further hot plate 17' where the second pattern of granular adhesive 18 is melted and wherein a further sheet-like material 18' is deposited. This step can be repeated as is necessary to eventually fuse together many plies of sheet-like material, such as fabric pieces.
The fusing station 20 is comprised essentially of a press 21 and a heating element 22 where the stack of sheet-like material with the granular melted glue particles are pressed together and heat fused. After this operation, the belt is advanced with the various layers of fabric pieces having been fused together while still being tacked to the top support surface 10 of the belt. This fused composite piece is illustrated at 23 and is then conveyed through a certain predetermined distance to let the fused glue and material cool prior to being subjected to a removing step which is constituted .
by a stationary scraper blade element 24 belng posltioned over the top support surface 10 of the belt at a predetermined location whereby to scrape off the tacked fused fabric pieces as they are displaced against the blade. As herein shown, a slide 25 or stacking mechanism is positioned at the scraping station so that the fused fabric pieces 23 are guided to a stacking container 26.
Of course, the length of the belt 10 can be diminished by providing cooling air jets 27 to direct cool air against the belt and the fabric pieces thereon during its passage upstream of the scraper element 24. The belt 11, as herein shown, is a Teflon-coated polyester belt but other suitable type materials can be used.
Referring now to Figures 2 to 4, there will be described the construction and operation of the adhesive applicator device 13. As herein shown, the applicator device is comprised of a container 30 having a removable top wall 31 whereby to load a quantity of fine granular adhesive substance 32 therein. The bottom wall 33 of the container is perforated and formed with a plurality of equidistantly spaced holes 34 through which the granular adhesive substance 32 will be discharged in predetermined quantity. A movable perforated plate 35 is slidingly displaced in the container 30 and positioned over the bottom wall 33. This plate 35 is also provided with a plurality of spaced apart holes 36 alignable with the holes 34 in the bottom wall 33. The plate 35 is connected to linkage 37 which is actuable to position the holes 36 in and out of alignment with the holes 34, as - 6 ~
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shown in Figures 2 and 3. The linkage 37 can be actuated manually or by machine means, as is obvious to a person skilled in the art.
When the holes 36 and 34 are aligned, the granular adhesive substance is discharged onto a screen frame 38, as shown in Figure 4.
A screen 39 is secured to the frame 38 and is provided with an opaque substance therein whereby to define a patterned open mesh area 40 which has a predetermined configuration so as to deposit granular adhesive particles on the top surface of a belt and in an oriented configuration. Thus, granular adhesive is deposited over the screen surface 39 to a constant layer height determined by the distance between the bottom of the adhesive container and the screen surface. In order to discharge the granular particle through the open mesh area 40, it is necessary to subject the frame 38 to a shock force, to thereby effect a sifting action which will cause the granular particle to sift through the open mesh area 40 and deposit a pattern 15 of granular particles on the top surface 10 of the belt 11. This can be done by positioning a piston 40 ad~acent the frame 38 and the piston head 41 hits the frame to impart a vibration to the screen. A control device 42 controls the piston to cause its actuation. If the density of the granular adhesive substance is to be increased, then the piston is actuated a predetermined number of times to deposit predetermined layers of adhesive through the open mesh area 40. Thls way, we can control the density of the deposited adhesive. The density can also be adjusted by adjusting the air pressure which actuates the piston cylinder.
Figure 5 is a schematic illustration showing an alternative support surface for carrying out the invention as hereinabove described. As herein shown, the support surface 10 is constituted by an indexing table 50. A plurality of these tables are supported on a turret mechanism whereby each table is displaced to various stations to receive the deposit of the granular adhesive substance, such as at 51. The indexing table 50 is then displaced to station 50' where the granular adhesive substance is heated and a fabric piece is oriented thereover by a fabric piece applicator device well known in the art. The table 50' can then be reversed and moved back to the depositing station 50 for the application of a further adhesive and then back to the applicator station 50' for the application of a further fabric piece, if required. The table is then displaced to the fusing station 50" where a mechanical press and a heater element fuses the granular adhesive to the fabric pieces.
The table is then displaced to the scraping station 50''' where a scraper element scrapes off the fabric pieces and discharges it on a transferring means. ;~
Referring now to Figure 6, there is shown another embodiment of the apparatus for applying adhesive substance patterns, but herein on a sheet of fabric material. As herein shown, the apparatus still comprises the support surface 10 and being an endless belt of non-adherent material and having the adhesive applicator box 13, as previously described, disposed at a feed end .. . . . . . ...
of the endless belt 10 whereby to deposit on the belt a plurality of dry granular adhesive substance oriented to form specific glue patterns on the support surface of the endless belt 10. These adhesive glue patterns are then fed to the hot plate 17 as previously described, whereby to melt the granular adhesive in pattern form. The modification as herein shown is that a roll 80 of fabric material is supported above the endless belt 10 and o~iented whereby the fabric material 81 is fed under the press plate 21 for registry with the glue patterns deposited thereon. The press plate can be a cold or a hot press plate depending on the fabric material, i.e.
whether it is sensitive or not to heat.
The endless belt 10 is driven with an index drive as previously described and at the pressing station, the glue is transferred into the fabric. The fa~ric is then advanced into the vertical section 82 with the fabric 81 maintained in registry or in contact with the support surface of the endless belt 10. Cooling means in the form of one or more fans 83 are disposed in the section whereby to cool the melted glue that is impregnated into the fabric 81. At the bottom of the cooling section 82, the fabric sheet 81 is redirected away from the non-adhering surface of the endless belt 10 whereby to separate the sheet 81 from the non-adhering surface of the belt 10 and, consequently, separating the glue patterns which are impregnated in the sheet 81.
After the sheet 81 has been impregnated with the glue patterns, it can then be rolled up again into a roll for future dle-cutting or can be immediately die-cut, as herein shown, by die-cutting means 84. The g 2 ~
die-cut means comprises a die-cut plate 85, as is well known in the art, and having knives (not shown) configured to the same configuration as the glue patterns whereby to die-cut the fabric 81 about the glue patterns such as shown at 86. These fabric pieces with the glue patterns are then collected and oriented in packages by a transfer device (not shown).
It is within the ambit of the present invention to cover any obvious modifications of the preferred embodiment described herein provided such modifications fall within the scope of the appended claims.
- 10 - ,~
FIGURE 1 iS a simpli~ied schematic view illustrating the method and apparatus of the present invention;
FIGURE 2 is a section view illustrating the construction of the granular adhesive applicator;
FIGURE 3 is a view similar to Figure 2 but showing the applicator in a different mode;
FIGURE 4 is a perspective view showing the construction of the screen frame with the open mesh dispensing pattern;
FIGURE 5 is a simplified schematic view showing an alternative construction of the apparatus wherein the support surface is a transfer table; and FIGURE 6 is a perspective view of a modified apparatus for applying a plurality of glue patterns on a fabric sheet fed from a roll of fabric.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring now to the drawings, and more particularly to Figure l, there is illustrated the method and apparatus for applying an adhesive substance at precise locations on a fabric piece so as to fuse them together. The apparatus comprises a support surface l0, herein the top surface of an endless belt having a non-adherent top surface and driven by suitable drive means 12 as is well known ln the art. An adhesive applicator 13 contains thereln a quantity of fine granular adhesive substance, such as a thermoplastic resin 14, and deposits same ln an orlented quantity, as shown at 15, on the support surface l0 positioned thereunder.
A control indexing means 16 controls the drive 12 to displace the deposited pattern of adhesive over a hot plate element 17 where the adhesive will melt and tack itself to the support surface 10 of the belt to form a melted pattern film of adhesive 19. A piece of sheet-like material having a predetermined configuration is then oriented and deposited over the melted adhesive 19 by suitable means so that the material is tacked to the belt.
The control device 16 then actuates the drive 12 to move the tacked material piece 18 to a fusing station 20 or else to a further adhesive applicator device 13' where a further pattern of granular adhesive 15' is deposited on the top surface of the sheet-like material 18. The belt is then displaced to a further hot plate 17' where the second pattern of granular adhesive 18 is melted and wherein a further sheet-like material 18' is deposited. This step can be repeated as is necessary to eventually fuse together many plies of sheet-like material, such as fabric pieces.
The fusing station 20 is comprised essentially of a press 21 and a heating element 22 where the stack of sheet-like material with the granular melted glue particles are pressed together and heat fused. After this operation, the belt is advanced with the various layers of fabric pieces having been fused together while still being tacked to the top support surface 10 of the belt. This fused composite piece is illustrated at 23 and is then conveyed through a certain predetermined distance to let the fused glue and material cool prior to being subjected to a removing step which is constituted .
by a stationary scraper blade element 24 belng posltioned over the top support surface 10 of the belt at a predetermined location whereby to scrape off the tacked fused fabric pieces as they are displaced against the blade. As herein shown, a slide 25 or stacking mechanism is positioned at the scraping station so that the fused fabric pieces 23 are guided to a stacking container 26.
Of course, the length of the belt 10 can be diminished by providing cooling air jets 27 to direct cool air against the belt and the fabric pieces thereon during its passage upstream of the scraper element 24. The belt 11, as herein shown, is a Teflon-coated polyester belt but other suitable type materials can be used.
Referring now to Figures 2 to 4, there will be described the construction and operation of the adhesive applicator device 13. As herein shown, the applicator device is comprised of a container 30 having a removable top wall 31 whereby to load a quantity of fine granular adhesive substance 32 therein. The bottom wall 33 of the container is perforated and formed with a plurality of equidistantly spaced holes 34 through which the granular adhesive substance 32 will be discharged in predetermined quantity. A movable perforated plate 35 is slidingly displaced in the container 30 and positioned over the bottom wall 33. This plate 35 is also provided with a plurality of spaced apart holes 36 alignable with the holes 34 in the bottom wall 33. The plate 35 is connected to linkage 37 which is actuable to position the holes 36 in and out of alignment with the holes 34, as - 6 ~
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shown in Figures 2 and 3. The linkage 37 can be actuated manually or by machine means, as is obvious to a person skilled in the art.
When the holes 36 and 34 are aligned, the granular adhesive substance is discharged onto a screen frame 38, as shown in Figure 4.
A screen 39 is secured to the frame 38 and is provided with an opaque substance therein whereby to define a patterned open mesh area 40 which has a predetermined configuration so as to deposit granular adhesive particles on the top surface of a belt and in an oriented configuration. Thus, granular adhesive is deposited over the screen surface 39 to a constant layer height determined by the distance between the bottom of the adhesive container and the screen surface. In order to discharge the granular particle through the open mesh area 40, it is necessary to subject the frame 38 to a shock force, to thereby effect a sifting action which will cause the granular particle to sift through the open mesh area 40 and deposit a pattern 15 of granular particles on the top surface 10 of the belt 11. This can be done by positioning a piston 40 ad~acent the frame 38 and the piston head 41 hits the frame to impart a vibration to the screen. A control device 42 controls the piston to cause its actuation. If the density of the granular adhesive substance is to be increased, then the piston is actuated a predetermined number of times to deposit predetermined layers of adhesive through the open mesh area 40. Thls way, we can control the density of the deposited adhesive. The density can also be adjusted by adjusting the air pressure which actuates the piston cylinder.
Figure 5 is a schematic illustration showing an alternative support surface for carrying out the invention as hereinabove described. As herein shown, the support surface 10 is constituted by an indexing table 50. A plurality of these tables are supported on a turret mechanism whereby each table is displaced to various stations to receive the deposit of the granular adhesive substance, such as at 51. The indexing table 50 is then displaced to station 50' where the granular adhesive substance is heated and a fabric piece is oriented thereover by a fabric piece applicator device well known in the art. The table 50' can then be reversed and moved back to the depositing station 50 for the application of a further adhesive and then back to the applicator station 50' for the application of a further fabric piece, if required. The table is then displaced to the fusing station 50" where a mechanical press and a heater element fuses the granular adhesive to the fabric pieces.
The table is then displaced to the scraping station 50''' where a scraper element scrapes off the fabric pieces and discharges it on a transferring means. ;~
Referring now to Figure 6, there is shown another embodiment of the apparatus for applying adhesive substance patterns, but herein on a sheet of fabric material. As herein shown, the apparatus still comprises the support surface 10 and being an endless belt of non-adherent material and having the adhesive applicator box 13, as previously described, disposed at a feed end .. . . . . . ...
of the endless belt 10 whereby to deposit on the belt a plurality of dry granular adhesive substance oriented to form specific glue patterns on the support surface of the endless belt 10. These adhesive glue patterns are then fed to the hot plate 17 as previously described, whereby to melt the granular adhesive in pattern form. The modification as herein shown is that a roll 80 of fabric material is supported above the endless belt 10 and o~iented whereby the fabric material 81 is fed under the press plate 21 for registry with the glue patterns deposited thereon. The press plate can be a cold or a hot press plate depending on the fabric material, i.e.
whether it is sensitive or not to heat.
The endless belt 10 is driven with an index drive as previously described and at the pressing station, the glue is transferred into the fabric. The fa~ric is then advanced into the vertical section 82 with the fabric 81 maintained in registry or in contact with the support surface of the endless belt 10. Cooling means in the form of one or more fans 83 are disposed in the section whereby to cool the melted glue that is impregnated into the fabric 81. At the bottom of the cooling section 82, the fabric sheet 81 is redirected away from the non-adhering surface of the endless belt 10 whereby to separate the sheet 81 from the non-adhering surface of the belt 10 and, consequently, separating the glue patterns which are impregnated in the sheet 81.
After the sheet 81 has been impregnated with the glue patterns, it can then be rolled up again into a roll for future dle-cutting or can be immediately die-cut, as herein shown, by die-cutting means 84. The g 2 ~
die-cut means comprises a die-cut plate 85, as is well known in the art, and having knives (not shown) configured to the same configuration as the glue patterns whereby to die-cut the fabric 81 about the glue patterns such as shown at 86. These fabric pieces with the glue patterns are then collected and oriented in packages by a transfer device (not shown).
It is within the ambit of the present invention to cover any obvious modifications of the preferred embodiment described herein provided such modifications fall within the scope of the appended claims.
- 10 - ,~
Claims (28)
1. An apparatus for applying a fine granular adhesive substance at a precise location on a piece of sheet-like material having a predetermined shape, said apparatus comprising an adhesive applicator having pattern means to apply an oriented quantity of said granular adhesive substance on a non-adherent surface of an endless belt, said adhesive applicator having a container in which is disposed said fine granular adhesive substance, said container being spaced above said non-adherent surface and having controllable discharge means in a bottom wall thereof to uniformly discharge said fine granular adhesive substance over a predetermined area, and a screen retained in a frame and positioned under said container to receive said granular adhesive substance over a pattern open mesh area thereof to discharge granular adhesive substance through said open mesh area only, said open mesh area of said screen having a pattern shape, said granular adhesive substance being discharged by subjecting said frame to a shock force, heat means to melt said adhesive on said surface, means to apply said piece of said sheet-like material in an oriented manner over said melted adhesive to tack said sheet-like material to said non-adherent surface, fusing means to fuse said adhesive to said sheet-like material and scraping means to remove said tacked sheet-like material fused with said adhesive from said surface after said adhesive has cooled.
2. An apparatus as claimed in claim 1 wherein said surface is an endless belt having an anti-static surface, and drive means to displace and stop said belt at predetermined locations.
3. An apparatus as claimed in claim 2 wherein said belt is a Teflon-coated polyester belt.
4. An apparatus as claimed in claim 1 wherein said adhesive applicator is further provided with density control means to control the quantity of said granular adhesive substance dispensed by said applicator, said density control means being constituted by varying the number of shocks imparted to said frame to vary the quantity of granular adhesive substance discharged through said open mesh area or by varying the shock force of a shock applicator means.
5. An apparatus as claimed in claim 4 wherein said controllable discharge means is constituted by a bottom wall of said container being perforated and containing a plurality of equidistantly spaced holes of identical size, and a movable perforated plate above said bottom wall having spaced-apart holes therein aligned with said holes in said bottom wall and slidingly displaceable to open or close said holes in said bottom wall to discharge said fine granular adhesive substance through said holes when aligned with said holes in said bottom wall continuously to maintain constant height of adhesive on top of the screen equal to the distance between the bottom of the container and the screen surface.
6. An apparatus as claimed in claim 2 wherein said heat means is a hot plate disposed under said belt to heat said belt to melt said adhesive thereon or top heating means.
7. An apparatus as claimed in claim 6 wherein there is further provided a further adhesive applicator above said belt to apply a second oriented quantity of said granular adhesive substance on a top side of said piece of sheet-like material.
8. An apparatus as claimed in claim 7 wherein an additional piece of sheet-like material is disposed on top of said piece of sheet-like material by a further applicator means and fused by a further fusing means.
9. An apparatus as claimed in claim 1 wherein said fusing means is a mechanical press having a heat source to press said sheet-like material against said glue while said glue is melted by said heat source.
10. An apparatus as claimed in claim 2 wherein there is further provided indexing means to control said drive means to displace said deposited adhesive substance and said sheet-like material to a plurality of stations along said belt to effect work functions.
11. An apparatus as claimed in claim 2 wherein said scraping means is a stationary or movable blade element disposed against said endless belt downstream of said fusing means to scrape off said fused adhesive and material from said anti-static surface as it is displaced against said blade, and gathering means to gather said fused material.
12. An apparatus as claimed in claim 11 wherein there is further provided cooling means between said fusing means and said blade element.
13. An apparatus as claimed in claim 1 wherein said surface is an indexing table displaceable to a plurality of work stations.
14. An apparatus for applying a fine granular adhesive substance at a precise location on a sheet material, said apparatus comprising an adhesive applicator having pattern means to apply an oriented quantity of said granular adhesive substance on a non-adherent surface of an endless belt, said adhesive applicator having a container in which is disposed said fine granular adhesive substance, said container being spaced above said non-adherent surface and having controllable discharge means in a bottom wall thereof to uniformly discharge said fine granular adhesive substance over a predetermined area, and a screen retained in a frame and positioned under said container to receive said granular adhesive substance over a pattern open mesh area thereof to discharge granular adhesive substance through said open mesh area only, said open mesh area of said screen having a pattern shape, said granular adhesive substance being discharged by subjecting said frame to a shock force, heat means to melt said adhesive on said surface to form a pattern, means to apply said sheet material in an oriented manner over said adhesive pattern to tack said adhesive pattern on said sheet material, transfer means to transfer said adhesive pattern to said sheet material, and separation means to separate said tacked sheet material with said adhesive pattern from said non-adherent surface after said adhesive has undergone cooling.
15. An apparatus as claimed in claim 14 wherein there is further provided cooling means downstream of said transfer means to cool said melted adhesive pattern on said sheet material.
16. An apparatus as claimed in claim 15 wherein there is further provided die-cut means downstream of said cooling means to cut said fabric about said adhesive pattern, said die-cut means having a cut configuration corresponding to the contour of said adhesive pattern.
17. An apparatus as claimed in claim 16 wherein said sheet material is a fabric sheet formed in a feed roll and guided over said non-adherent surface and into said transfer means for registry with said adhesive pattern on said non-adherent surface, there being a plurality of said adhesive patterns formed in an oriented side-by-side relationship on said non adherent surface, said die-cut means having a plurality of contour knives to simultaneously cut a plurality of fabric pieces with said adhesive patterns.
18. An apparatus as claimed in claim 17 wherein said transfer means is a press plate under which said fabric sheet is oriented to press said fabric sheet over a group of said adhesive patterns.
19. An apparatus as claimed in claim 18 wherein said press plate is a heated press plate.
20. An apparatus as claimed in claim 18 wherein said press plate is a cold press plate.
21. An apparatus as claimed in claim 18 wherein said cooling means is constituted by one or more fans oriented to blow ambient air over said fabric sheet while said fabric sheet is maintained in contact with said non-adherent surface downstream of said press plate.
22. An apparatus as claimed in claim 14 wherein said non-adherent surface is an endless belt having an anti-static surface, and drive means to displace and stop said belt at predetermined locations.
23. A method of applying a fine granular adhesive substance at a precise location on a piece of sheet-like material having a predetermined shape, said method comprising i) applying an oriented quantity of said granular adhesive on a non-adherent surface, ii) melting said adhesive on said surface, and iii) applying a piece of said sheet-like material, in an oriented manner, over said adhesive to tack said sheet-like material to said surface, iv) fusing said adhesive and said material together, and v) scraping said sheet-like material fused with said adhesive from said surface.
24. A method as claimed in claim 23 wherein said surface is an anti-static surface of an endless belt and wherein there is further provided means to displace said belt to a plurality of stations to effect work functions, said scraping being effected by displacing said surface of said belt against a stationary scraper blade element.
25. A method as claimed in claim 24 wherein said step (i) comprises (a) discharging said fine granular adhesive substance over a pattern open mesh area of a screen positioned over said surface of said belt, and (b) controlling the quantity of said discharge of granular substance to control the density of said substance deposited on said surface.
26. A method as claimed in claim 25 wherein after step (iii) there is further provided the step of (a) depositing a further oriented quantity of said granular adhesive on said sheet-like material, (b) heating said sheet-like material to melt said further adhesive, and (c) applying a further piece of sheet-like material over said further melted adhesive.
27. A method as claimed in claim 23 wherein after said step (iv) there is provided the step of cooling said fused adhesive and sheet-like material prior to scraping.
28. A method as claimed in claim 27 wherein after said step (v) there is provided the step of transferring said fused adhesive and sheet-like material to a stacking station.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62463990A | 1990-12-10 | 1990-12-10 | |
| US624,639 | 1990-12-10 | ||
| US77268491A | 1991-10-07 | 1991-10-07 | |
| US772,684 | 1991-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2054815A1 true CA2054815A1 (en) | 1992-06-11 |
Family
ID=27089724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2054815 Abandoned CA2054815A1 (en) | 1990-12-10 | 1991-11-01 | Apparatus for applying an adhesive substance pattern at precise locations on a non-adherent surface for transfer to a fabric |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2054815A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5453296A (en) * | 1993-05-04 | 1995-09-26 | Mcneil-Ppc, Inc. | Method for making an absorbent product having integrally protected adhesive |
-
1991
- 1991-11-01 CA CA 2054815 patent/CA2054815A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5453296A (en) * | 1993-05-04 | 1995-09-26 | Mcneil-Ppc, Inc. | Method for making an absorbent product having integrally protected adhesive |
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