KR920008733B1 - Linear Deposition Apparatus for Adding Melt Powder - Google Patents

Abstract

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Description

Linear Deposition Apparatus for Adding Melt Powder

1 is a perspective view from the front of a machine built in accordance with the principles of the present invention;

2 is a front view of the machine shown in FIG.

3A and 3B are perspective and partial side views illustrating the first working portion of the present invention.

4 is a perspective view of the second working part of the present invention in the open form, viewed from the rear in approximately the rear side;

Fig. 5 is a perspective view of the second working part of the present invention in the open form, seen from approximately front.

6 is a perspective view of a pellet in which a shoe upper is disposed.

* Explanation of symbols for the main parts of the drawings

10: deposition apparatus 12: deposition unit

14 heating portion 16 pressure and cooling unit

20: storage belt 22: belt support

26 template means 25 support

28: screen frame 30: conduit

32: dispenser and carrier 33: feeder

34: wiper blade 36: channel

38 screen 40 upper layer

40A: lower overlap layer 42: cutout

44: lower plane 46: opening

48: upper plane 50: housing

54 heating element 56 bottom flat block

60: upper support channel 66: guide

76: notch

FIELD OF THE INVENTION The present invention relates to a deposition apparatus useful for adding molten powder to a substrate to change certain reinforcement and reinforcement or decorative properties of the substrate, and more particularly to assembling the upper of a shoe in the form of a shoe. Apparatus and method for forming reinforcement or decorative means in this upper prior to making.

For many years, the footwear and apparel industry has installed reinforcement and reinforcement or decorative means in their products. Manufacturers of pajamas, jeans, sportswear and sports equipment (such as gloves and visors) and footwear manufacturers have applied layers of reinforcement to their products by sealing, welding, or otherwise. There are various). In the footwear manufacturing industry, it is common to apply reinforcement and reinforcement means in layers of molten thermoplastic material that can stick to the upper of a shoe. The first attempt to reinforce or reinforce the upper of a shoe is to insert the preformed reinforcing element into the upper of the shoe prior to assembly in the mold. In a preferred form, a separate, molten plate material, which may be flexible by heat or solvent, is inserted into the upper of the shoe prior to assembly in the mold and then hardened before removing the upper of the shoe from the mold. It is molded at the time of assembly in the mold. If the shoe upper is immersed in a solution or dispersion in a volatile liquid carrier of a hardenable reinforcing material prior to assembling the upper of the shoe, and the submerged material is cured after assembling the shoe in the mold, the upper of the shoe is thus strengthened Can be.

One method of this strengthening of the upper of a shoe is described in US Pat. No. 3,316,573, whereby an elastically soluble reinforcing element is fluidly deposited, heated to the melting point, and then cooled to form a three-dimensional form. A selected portion is formed on the upper of the shoe.

Another device for coating parts of shoes is described in US Pat. No. 3,342,624, which places a template on a shoe upper and supports the combination of the template and the shoe upper with a concave support surface and then a wiper blade. A wiper blade is used to sweep the template to deposit the liquid reinforcement on the recess of the shoe upper.

The most recent device for strengthening the components of a shoe is that described in US Pat. No. 3,973,285, which deposits a molten thermoplastic charge on the upper of the shoe supported by the end fastening means.

Conventional devices as described above work well in some cases, but have difficulty in providing a reinforcement with a uniform thickness over the sealing and overlapping patterns. This is because the adhesion of the reinforcing agent is inferior at the end. Both process or spider file characteristics and rough ends may be present. From this machine, molten material can sometimes come out of the joint, and nozzles can leak or take a long time to form and can easily be changed.

The materials that can be used in these conventional machines are limited by their viscous flow and thermal stability properties and therefore need to be carefully selected to match the performance of the final product. In addition, these special materials can be very expensive.

It is therefore an object of the present invention to provide an improved apparatus for depositing soluble powders for use in making a reinforcing or funnel layer for application to a substrate, which overcomes the drawbacks of the prior art and is specifically reinforced without the above mentioned inconveniences. Or will facilitate the manufacture of a decorated shoe upper.

In accordance with the present invention there is provided an apparatus for depositing soluble powder for use in making a reinforcing or decorative layer for application to a substrate, said apparatus comprising a frame, a receiving belt movable relative to the frame, for depositing powder on the receiving belt. It consists of powder depositing means arranged on the receiving belt, the powder depositing means has a cutout so that powder can pass through the cutout, and the cutout and the receiving belt cooperate to form a desired powder containing cavity by a predetermined amount. The powder form of can be deposited on the receiving belt.

As can be seen from the above, the use of the device allows the shape of the powder to be precisely controlled in terms of its shape and amount, so that a reinforcing or decorative layer precisely formed to be applied to the substrate when melted in the chow can be obtained.

Furthermore, in the above apparatus, the receiving belt is preferably made of flexible sheet material so that it can be deformed, and further means for deforming the part of the receiving belt which acts with the cutout is preferably provided so that the desired shape of the powder receiving cavity This can be made. In one embodiment, spacer means are provided around the cutout to keep the deposition means spaced apart from the receiving belt by the spacer means, and the deforming means comprises at least one protrusion arranged below the receiving belt so that the protrusions In addition to the means for believing the (s) to the receiving belt, it contacts the receiving belt at an interval not reached by the spacer means, thus forming a desired three-dimensional powder storage cavity.

In this way the powder storage cavity does not have to be a constant depth throughout, but rather can be shaped so that the thickness of the layer changes, in particular the thickness can be inclined towards the edge of the layer, which can be used to hide the reinforcing layer in the finished product. And patents in the manufacture of other garments.

Furthermore, the device according to the invention preferably further comprises heating means for forming the reinforcing layer or decorative layer from the soluble powder deposited as described above, whereby the receiving surface and the powder form formed on the receiving belt are heated. The powder form may be melted to form a desired reinforcing or long layer. Moreover, the heating means conveniently includes a flat plate member disposed under the receiving belt and having at least one heater, and the member is provided with a vacuum means for pulling a portion of the receiving belt toward the member. In addition to or instead of the plate member arranged below the receiving belt, the heating means may comprise exothermic heater means arranged on the receiving belt.

By providing the heating means as described above, it can be seen that the powder can be melted easily after subsequent deposition, thereby reducing the risk of the powder dispersing before melting. Furthermore, in the apparatus according to the invention preferably the powder deposition means is arranged in the first working part and the heating means is arranged in the second working part, and the receiving belt is in the form of powder deposited in the first working part. It is movable to carry to the second working portion which is heated and melted as above. In this way, the powder can be easily transferred from the powder deposition means to the melting means.

The reinforcement or funeral layer thus formed, as described below, will constitute a shoe component, such as a shoe nose, which may itself be a sale item. However, in one embodiment of the present invention, the reinforcing or decorative layers formed as described above are applied directly to the substrate in the device, for which the device preferably has pressing means such that the powder form melted by this means It is pressed and glued to it. In addition, this embodiment preferably has cooling means such that the molten powder is cooled to maintain its shape before pressing the molten powder form against the substrate by the means, but can be adhered to it when pressed against the substrate. So that the adhesive surface of the powder is left with sufficient adhesion. Furthermore, such cooling means are conveniently provided with a flat plate member arranged below the receiving belt and connected to the cooling fluid source, and provided with means for pushing the receiving belt to narrow with the flat plate member.

By this arrangement it can be seen that the heat used to melt the powder to form agglomerated masses also acts to activate the adhesion of the powder in a simple and progressive manner.

In one embodiment, the pressing means includes a substrate holder that is press-fit with the receiving belt and is movable away. Moreover, when the receiving belt is conveniently movable from one working part to the other, the pressing means is arranged in the third working part and the molten powder form is conveyed to the third working part by the movable receiving belt. Conveniently cooling means are also arranged in the third working part.

Using the apparatus described above, a convenient means for first forming a cavity to feed powder into the cavity to provide a desired lump of powder is provided, the cavity being fed through a receiving belt and powder which can be properly deformed. Is made by the cutout. When the receiving belt is deformed as described above, the receiving belt returns to its usual flat initial state without affecting the shape of the powder mass deposited after deposition. Moreover, the powder mass is subsequently melted to form a suitable decorative or reinforcing layer, which layer can be applied to a substrate such as a shoe upper as part of the manufacturing process itself or as a part of the manufacturing process in a suitable pressing means.

The receiving belt may consist of a low adhesive, heat resistant, flexible belt which may move along a linear path between the three working parts, for example. The deposition means consists of a powder feeder and a template means in combination with a doctor blade system which ensures that a predetermined amount of powder is swept into the cavity formed by the cutout and the receiving belt.

Details of the powder deposition means and the powder material used in the apparatus of the present invention are described in detail in the following detailed description with reference to the accompanying drawings, in which one apparatus according to the present invention shown in the accompanying drawings is non-limiting. An example has been chosen to explain.

Hereinafter, the object and advantages of the present invention will be described in more detail with reference to the accompanying drawings.

In FIG. 1, a linear powder deposition apparatus 10 is shown for reinforcing and / or treating substrates such as, for example, garments or shoe uppers. In the device 10 three working parts are arranged in a line, that is, the first working part is the powder depositing part 12 and the second working part is the heating part 14, and the third working part is the pressing and cooling part 16. to be. The three working parts 12, 14, 16 are commonly supported on the elongated frame 18. In the deposition section 12 (see FIGS. 2, 3, and 4) there is a receiving belt 20 in the form of a plane arranged horizontally to extend across the belt support 22. The receiving belt 20 and the belt support 22 constitute part of the movable means 24, which means 24 may be introduced into or exit from the remaining two working parts 14, 16. It is possible. As shown in FIG. 4, the receiving belt 20 is tightly supported by the first support member 22A fixed to the lower surface 24A of the movable means 24. As shown in FIG. The second support member 22B deflects the receiving belt 20 by being fixed to the pair of struts 22C, and each intermediate portion of these struts 22C is attached to the bracket 22D fixed to the lower surface 24A. It is supported so that rotation is possible. Each lower end of the support 22C has a spring 22E, which is attached to the support to firmly support the first frame member 22A on the lower surface 24A. A pair of frame members 23A and 24B, which are mutually biased, are fixed to the vertical brackets 23C, respectively, and the vertical brackets 23C are pivotally deflectable to the lower surface 24A by the capturing means around them. Thus, the brackets 23A and 23B are deflected (see Fig. 4).

The template means 26 as shown in FIGS. 3 a and 4 are hingedly fastened to the support 25 extending upward from the elongated frame 18. The underside of the screen frame 28 in the template means 26 is a powder reinforcement and reinforcement or decorative material (drawings) passing from the feeder 33 through the soluble conduit 30 and through the dispensing and conveying machine 32. Is indicated by ＂P＂). The dispensing and conveying machine 32 is installed in the screen frame 28, the axial direction for movement of the dispensing and conveying machine 32 is fixed to the structure 29 that supports the bearing rods (double acting cable cylinder ( 27 is laterally moved in the direction crossing the screen frame 28. The cable 31 is arranged around a pair of pulleys 31A, and since the cable 31 is attached from both sides of the piston in the cable cylinder 27 to the contact point in one side of the distributor and the carrier 32, When the cable cylinder 27 is actuated by an appropriate signal from a pressure source (not shown), the cable 31 pulls the distributor and the carrier. The dispensing and conveying machine 32 includes a pair of wiper blades 34, which are used as the dispensing and conveying machine 32 moves in a direction crossing the template means 26. It reciprocates to cross the longitudinal direction of the screen frame 28. These wiper blades 34 (some of which are also shown in the side view of FIG. 3B) are provided on one side of the carrier 32 and are deflected downward with respect to the carrier 32, but are movable upward and downward with respect to the carrier 32. . Each wiper blade 34 has pins 35 at both ends thereof.

A pair of cam levers 37 and 39 are arranged at the end of the screen frame 28 adjacent to the pin 35. Each cam lever 37, 39 can pivot about an axis 41 located at its outer end, and can move the wiper blade 34 up and down, respectively, in accordance with the dispensing and conveying device 32 movement direction. It is biased to be easy to make. When the dispensing and transporter 32 moves to the right (FIG. 3B), the rear wiper blade 34 can be dragged along the surface of the template means 26 to pass through the cutout 42, and the front wiper blade 34 is generally elevated. When the moving direction of the carrier 32 is reversed, the wiper blade 34 which has been raised so far passes over the upper surface of the template means, and the other wiper blade 34 of the screen frame 28 is raised. It will go towards the end. It is of course also possible to raise and lower each wiper blade 34 by hingedly arranging other means such as, for example, pressure pistons and cylinders, between each wiper blade and the dispensing and conveyer 32. .

The template means 26 is slidably housed in a pair of channels 36 attached to both bottom surfaces of the structure 29, which template means 26 overlap the screen 38 in the form of a mesh and above it. Consisting of a soft, rigid, impermeable material 40 (see FIGS. 1, 3a, 3b, and 4). The powder used to reinforce the shoe upper (＂P＂) is preferably 35 mesh, and finer powder (eg, 50 mesh to 100 mesh powder) when attempting to finely pattern a complex design upon reinforcement of the shoe. You can also use The form of the powder to be used in the apparatus of the present invention is preferably, for example, ionomer, polyethylene, ethylene vinyl acetate, or a combination thereof. The mesh of the screen 38 is typically larger than the powder, on the order of 8 to 30 mesh, to allow the powder from the dispensing and carrier 32 to pass through this screen. At least one cutout 42 (see FIG. 3) is formed in the soft top material 40, the overall shape of the cutout 42 being an unreinforced substrate (i.e., in the third work piece 16). , Shoe upper) to conform to the desired shape of the reinforcement and reinforcement or decorative powder to be applied. The bottom surface of the screen 38 may adhere to the lower surface layer 40A in the form of a metal foil, and the lower surface layer 40A may have similar cutouts 42 at positions coinciding with the cutouts 42 in the upper surface layer 40. ) Is formed. When the upper surface layer 40 and the lower surface layer 40A are pressed against each other, they can be mutually adhered through the meshes in the screen 38 by the adhesive therebetween.

The second working portion constituting the heating portion 14 is fixed to the frame member 18 laterally adjacent to the deposition portion 12 (see FIGS. 1, 2, and 5). A plurality of electrical heating elements (not shown) are arranged in the lower plane 44 of the heating portion 14. A plurality of openings 46 are also arranged transversely in this lower plane 44, which openings 46 are in fluid communication with a vacuum source (not shown) via a vacuum conduit 47. . The upper plane 48 of the heating portion 14 is arranged in a housing 50 whose one end is hingedly connected to the frame member 18 by a bracket 52. The housing 50 is such that the stop bracket 51 at the other end is capable of hitting the limit bracket 53, which has an upper plane 48 approaching the lower plane 44. To control the degree of In the upper plane 48 there are a number of exothermic heating elements 54 which are connected to a suitable power source, which are arranged parallel to one another in the housing 50.

The third working part 16 is a pressing part composed of coupling means and / or cooling means (see FIGS. 1 and 2). This press section 16 includes a lower flat block 56 in fluid communication with a refrigerating source (not shown) via a suitable conduit 58. The lower flat block 56 is fixed to the elongate frame member 18. The upper support channel 60 can move perpendicularly to the bracket 62, which is attached to the vertical portion of the frame member 18. In the pressurizable double acting piston and cylinder device 64, the upper support channel 60 is fixed between the upper portion and the bracket 62. The piston and cylinder device 64 is provided by an appropriate signal from a switch attached adjacent one of the pair of guides 66 extending through the underside of the three working parts 12, 14, 16. It is connected to a working pressurized fluid source. The substrate support pallet (or frame) 70 is slidably received in the upper support channel 60. [This pellet 70 is shown open in FIG. 6 and the substrate in this embodiment is a shoe upper (indicated by “U” in the figure). The pallet 70 is composed of two rectangular planar members 72 and 74, each of which is connected by a hinge 75. A pad (not shown) is fixed to the inside of one flat member 72, and a substrate (if necessary) (which is a shoe upper in this embodiment) is located above this pad. A cutout 76 is formed in the other planar member 74, and the cutout 76 has a sufficient spacing for the reinforcement and reinforcement or decorative pattern required by the substrate, i.e., the shoe upper. And match. The pad is pressed slightly outward through the cutout 76 in the flat member 74 when the substrate, ie the portion to be reinforced and reinforced or decorated with the pad, is in close contact with the pad. To do that. In FIG. 6, a gun of molten material (denoted by (＂M＂) in the drawing) is already applied to the shoe upper (＂U＂) as a shoe nose.

The frame 24 supporting the receiving belt 20 is slidably housed on the guide 66, which is adapted to the mutual operation of the pressurizable dual actuated piston and cylinder device 80. Moveable on the guide body 66, wherein one end of the dual actuated piston and cylinder device 80 is secured between the vertical portions of the frame member 18 and a piston rod (not shown) is received. It is attached to the frame 24 supporting the belt 20. It is also possible to use other drives such as, for example, stepping motors with racks and piston gears. In each of the work portions 12, 14 and 16, the portion adjacent to the guide 66 is provided with signaling means such as a switch, for example, to activate the next step during the operating cycle of the device 10.

The receiving belt 20 has a lower flat support 82 which moves to access and retract below it by a pressurized double actuated means 84 which receives an appropriate signal, such a lower flat support 82. In the deposition process, while the form of reinforcing and reinforcing powder or decorative powder is applied to perform the support area for the receiving belt (20). The pressurizable double acting means 84 is fixed to the bracket 81 attached to one side of the frame 18 (see FIG. 4). As shown in FIGS. 3B and 4, wedges (denoted by S ＂in the figure) may be disposed above the lower flat support 82. This wedge is made up of a strip of gasket material, which is also provided with respect to the underside of the gold foil surface 40A on the screen 38 where no peripheral gasket is formed around the cutout 42. The storage belt 20 is arranged to twist and press. This wedge is preferred in the case of products for reinforcing shoe uppers, because of the sharp taper on the powder form from the end of the surrounding gasket to the end (the end without the peripheral gasket) to the cutout 42. Is because it can be formed. If no wedge is formed on the lower flat support 82 at which the receiving belt 20 is located below, a product of a tapered shape is obtained according to the thickness and taper shape of the peripheral gasket. .

One end of the structure 29 on which the screen frame 28 is mounted (an end fixed to the frame member 18) has a hinge 83 (see FIG. 1), and a bracket about the middle of the other end. 85 is attached (see FIG. 4). On the lower end of the bracket 85, a cam driven wheel 87 is mounted. A cam 89 is arranged on the track 91, which cam 89 is attached to the rod 93 in a pressurized dual actuated cylinder 95 in a direction approaching and retracting the belt frame 24. Are movably connected. The cam 89 has an inclined surface 97 which gradually increases, and the cam driven wheel 87 is rotated on this inclined surface.

In operation of the apparatus 10 for applying reinforcement and reinforcement powder or decorative powder to the shoe upper, a predetermined amount of meltable powder is discharged from the feeder 33 via the flexible conduit 30 and into the dispensing and conveying machine 32. do. The drive means for this dispenser and conveyer (in the example shown the cable cylinder 27 attached to this dispenser and conveyer 32) is a cable 31 fixed to the piston in the cylinder 27 by receiving an appropriate signal. In conjunction with this, the dispensing and delivery device 32 on the guide rod of the structure 29 moves in the transverse direction of the screen frame 28. Thus, the wiper blades 34 sweep across the template top surface 40, and the template is not in contact with the template means 26 and the spacer or gasket thereon. The lifting of the cam 89 preferably has a deformed sinusoidal shape, whereby the template means 26 is a complex three-dimensional on the receiving belt before it is moved to the second working part (ie the heating part) 14. It first moves upward at a low speed to prevent harmful events such as air ingress or electrostatic phenomena in powder form. The use and positioning of the point-shaped spacers D as shown in FIG. 4 further controls the inflow of air when the template means 26 is lifted from the receiving belt 26, thereby providing a space therebetween. This is to adequately isolate them so that no partial vacuum is generated or problems associated with them.

When the storage belt 20 and the powder form (＂C＂) thereon move in the transverse direction along the guide body, the switch is operated in the heating unit 14 to move the storage belt 20 in the frame 24. Stopping the supporting movement, the signal is generated by appropriate means, the receiving belt 20 by the height adjusting means 77 arranged between the bushing positioned on the guide 66 and the frame 24 It is lowered to come into contact with the bottom plane 44. The vacuum source is thereby activated, so that the vacuum in the opening 46 is actuated to support the receiving belt 20 against the heated lower plane 44 by suction, so that the receiving belt 20 has the maximum heat transfer performance. Will be displayed. The heating element in the lower plane 44 is a heating element that heats the powder thereon and melts them in three-dimensional form.

After a suitable time (preferably up to about 25 seconds), upon receiving the appropriate signal to shut off the vacuum source, the receiving belt 20 and frame 24 are frame height adjustable, which may consist of a pressurized piston and cylinder arrangement. By means of lifting from the lower plane 44 and thus being transferred to the third working part 16 by the device 80, a substrate, such as an unreinforced shoe upper, is received. To be combined with the viscous form of the phase.

The hydraulic belt 20 in the third working part 16 is first lowered by the frame height adjusting means 77 and supported in contact with the lower flat block 56, or secondly, the lower flat block. Supported slightly above 56 and then pressed by pallet 70 to come into contact with this block 56, the receiving belt being cooled by the refrigeration means to be introduced on the receiving belt 20 It solidifies the form. At this time, the shoe upper (＂U＂) in the shoe upper support pallet 70 assembled in the upper support channel 60 is pressed downward by the pressurizable piston and the cylinder device 64, and the substrate [ Unshoeed upper (＂U]) instantaneously supports the powder form on the receiving belt (20), the inner side of which has been pressed, which is now cooled but still sticky and viscous. When the pressurizable piston and the cylinder device 64 are reversed to their up position, the cooled viscous form adhering to the inside of the shoe upper is lifted out of the soft receiving belt 20. The pallet for supporting the substrate (shoe upper) may exit from the upper support channel 60 at the third working part, and the next unreinforced and unreinforced and undecorated substrate (shoes upper) is supported by the upper support channel 60. Is located in. At this time, the receiving belt 20 which is not in contact with the molten powder form may be returned to the first working part. The receiving belt 20 is lifted slightly from the lower flat block 56 by the frame height adjusting means 77 to form a gap between the frame 24 and the block 56 and pressurizable piston. And the operation of suitable means such as cylinder arrangement 80 to cause frame 24 to move on guide 66.

If only the molten powder form is required, it is not necessary to attach the substrate to the pallet 70, and if necessary, press the molten powder form with a pad on the pallet. The pad is made of a material of low friction that is not damaged by heat, and the pressing with the pad as described above is intended to smooth out the rough parts that may be present on the molten powder. To obtain a bubble-free product, the pad may be made of a porous material or coated with a porous material. The molten powder may be the front of the shoe to be applied to the shoe upper in a later work process.

Hereinafter, the form of powder (＂P＂) that can be used under the operating conditions of the present invention through the examples will be illustrated.

Example A

This embodiment is an embodiment in which the present invention is preferably used for reinforcing or reinforcing shoe uppers. The following properties were used: 30 to 50 mesh ionomer powders in the form of sodium cations with a melt index of 2.5, a bending rate of 51,000 psi, a thermal softening temperature (Vicat) of 63 ° C., and no additives. . Cuts in the flat surface were made in the specific shape as needed and placed on an 8 mesh screen made of 0.015 inch (0.38 mm) stainless steel wire. Using 8 mesh screens, we can balance the corresponding elements such as (a)-(c) below. That is, (a) the use of fine mesh makes the wiper blade smooth. (b) If the screen wire is too thick, the end, i.e. the tapered end, is too thick. (c) The use of small diameter coarse wires causes the remaining powder particles to stick or jam, resulting in a small surface area.

As spacer means at the bottom of the template, one for a molten product having a thickness of about 0.040 inch (1.02 mm) was used.

In consideration of the bulk density of the powder and the flow operation, a peripheral gasket having a thickness of 0.100 inch (2.54 mm) was used on the bottom of the template means. Adjust the wedge on the lower support surface so that the part without spacers in the receiving belt does not touch the bottom of the template means, thereby making it suitable for the powder applied on the receiving belt within the range of the surrounding gasket. The taper (ie desirable) was allowed to form.

In the heating section, the bottom heater was adjusted to about 490 ° F. (254.4 ° C.). Each exothermic heater on top of the receiving belt was adjusted to have a surface temperature of approximately 600 ° F. (315.6 ° C.).

The deposition apparatus was operated so that the total time to melt the powder on the receiving belt was about 25 seconds, during which time the product was transferred to the final stage to apply it to the substrate (in this case, the bottom of the shoe upper). The cooling plate was cooled while pressing.

The final product for the shoe front of the shoe upper was 0.012 inches (0.30 mm) thick at its ends and 0.035 inches (0.89 mm) thick at its maximum thickness.

Example B

In this embodiment, residual powder is deposited on the screen during the deposition process by using 0.3% polyalkoxy tertiary amine as antistatic agent and 0.3% fine silica as desiccant and flow promoter as additive in the powder. While leaving less and reducing the electrostatic movement of the powder particles, an advanced printed pattern was obtained. In this case, the product may have a thickness of 0.040 inch (1.02 mm) at the maximum thickness portion.

Example C

In this example, 0.05% of conductive flue soot was included as an additive in the preferred composition in Example A above. The deposition, flow and product pattern at this time were similar to those in Example B. The melting time in the heating section was reduced to about 20 seconds and the product thickness was about 0.040 inches (1.02 mm).

Example D

To manufacture soluble shoe fronts for new or ladies shoes, a low density 35 mesh with a melt index of 22, a flexion rate of 19,000 psi, a thermal softening temperature of 83 ° C and no additives Polyethylene powder was used. The lower heating block raised the temperature to about 400 ° F. (204.4 ° C.) and the upper heating element was about 500 ° F. (260.0 ° C.), with a thickness of about 0.012 when the heating (melting) time was about 18 seconds. Tapered products were prepared that were between inches (0.30 mm) and 0.35 inches (0.89 mm).

Example E

To prepare soft shoe fronts for slippers, ladies' and some children's shoes, 35 mesh ethylene vinyl acetate copolymers having a melt index of 9, a bending rate of about 13,500 psi and a thermal degradation temperature of about 59 ° C were used. . The conditions of the machine were the same as in Example D, and a tapered product having a thickness of about 0.012 inch (0.30 mm) to 0.035 inch (0.89 mm) was prepared by setting the heating (melting) time to 12 seconds.

Example F

If the device is intended to reinforce the neck, the strap or upper line portion of the shoe upper, 100 mesh nylon 12 and 0.3% polyalkoxy tertiary amine are preferred powders. The mesh size of the template screen may be about 30 mesh. Since the product is not tapered at this time, the gasket at this time is formed all around the cutout and has a uniform thickness of 0.040 inch (1.02 mm) in the form of a dot-shaped spacer material. By using this, the heating time is 12 seconds, whereby a printed pattern having a thickness of 0.017 inch (0.43 mm) is obtained.

Example G

This example relates to the reinforcement of a thin film form similar to that of Example F, using 100 mesh vinyl powder and 0.3% polyalkoxy tertiary amine powder, if necessary, adding a heat stabilizer, Using deposition means and conditions, the same results are obtained.

The receiving belt may be in the form of an endless belt that is intermittently advanced by a pair of rollers installed one at each end, and the endless belt may be progressed once along a working part such that the belt described above is moved on the frame device. have. Powder deposited on the receiving belt may be useful for reinforcing or reinforcing the front of a shoe upper or a starp of a shoe, or for reinforcing and / or colorizing these shoes or boots.

Advantageously, the molten powder of the present invention may be deposited on garment articles, such as hat visors, athletic gloves, collars, pajamas, elbows or knee braces, which require reinforcement and coloring or decorative treatments. When the powder is added in a tapered form or with varying thickness, the powder can change the flexibility of the substrate to which the powder is applied, and thus it can be applied very favorably to shoes.

In other words, while the above describes a unique device for applying reinforcement and reinforcement or decorative material to a portion of a substrate (preferably a soluble substrate, such as the inside of a shoe upper), the material is more uniform, cleaner and more efficient. It is a meltable powder which enables a production method.

Claims (15)

An apparatus for depositing flexible powder for use in making reinforcement or decorative layers for application to a substrate, the apparatus comprising: a frame, a receiving belt surface movable relative to the frame, and arranged on the receiving surface to deposit powder on the receiving surface A powder depositing means, wherein the powder depositing means includes a cutout portion through which powder can pass and which cooperates with the receiving surface to form a desired powder receiving cavity, wherein a predetermined amount of powder form is formed on the receiving surface. Said device capable of being deposited. The apparatus according to claim 1, wherein the receiving surface is made of a flexible sheet material, and the device is provided with a means for deforming a portion of the receiving surface cooperating with the cutout to form a so-called powder storage cavity. . 3. The at least one protrusion of claim 2, wherein a spacer means is disposed around the cutout so that the deposition means is spaced apart from the receiving surface by the spacer means. Contacting the means surface with an interval not touched by the spacer means, together with means for pushing the protrusion (s) against the receiving surface, thereby forming the powder-containing cavity of a desired three-dimensional shape. The device. An apparatus for making reinforcement or decorative layers from flexible powder deposited as described above, wherein said powder form is formed on said receiving surface and said receiving surface to melt to form a desired shape of reinforcing or decorative layer. Said apparatus provided with heating means capable of heating the powder form. The powder form of claim 4, wherein the powder deposition means is arranged in a first working portion and the heating means is arranged in a second working portion, and the receiving surface heats the powder form deposited on the first working portion. And moveable to carry to the second working portion that is melted as above. An apparatus for making reinforcing or decorative layers from the flexible powder deposited as described above, wherein the powder is formed on the receiving surface and the receiving surface to melt the powder form to form a desired reinforcing or decorative layer. A heating means capable of heating the form is provided, the heating means comprising a plate member arranged below the receiving surface and having one or more heaters, the member having a portion of the receiving surface against the member. Said device having vacuum means for attraction. The method of claim 6, wherein the powder deposition means is arranged in the first working portion and the heating means is arranged in the second working portion, the receiving surface is in the form of powder deposited on the first working portion Said apparatus being movable to carry to said second working portion which is heated and melted as above. 8. The apparatus according to any one of claims 4-7, wherein the heating means comprises exothermic heater means disposed on the receiving surface. 8. The apparatus according to any one of claims 4-7, further comprising pressing means for applying the reinforcing or decorative layers formed as described above to the substrate and forcing the molten powder form to be pressed against the substrate and adhered thereto. 10. The apparatus according to claim 9, wherein the pressing means comprises a substrate holder that is pressably engaged with and separated from the receiving surface. The method of claim 10, wherein before pressing the molten powder form onto the substrate, the molten powder is cooled to maintain its form, but the adhesive surface of the powder remains sufficiently viscous to adhere to it when pressed against the substrate. Said apparatus provided in said cooling means. The method according to claim 6, wherein the reinforcing or decorative layers formed as described above are applied to the substrate, and the pressing means for pressing and bonding the molten powder form against the substrate and maintaining the form before pressing the molten powder form against the substrate. Wherein said cooling means further comprises cooling means for leaving the adhesive surface of the powder in a sufficiently viscous phase so that it can adhere to the substrate when pressed against the substrate, the cooling means being arranged below the receiving surface to cool. And a plate member connected to the fluid source, wherein the means is provided for pushing the receiving surface into contact with the plate member. 13. The apparatus of claim 12, wherein the pressing means comprises a substrate holder that is pressably coupled to the receiving surface and displaced. 8. The apparatus as claimed in claim 5 or 7, wherein the reinforcing or decorative layers formed as described above are applied to the substrate, and further comprising pressing means for causing the molten powder form to be pressed against the substrate and adhered thereto. And the pressing means is arranged in a third working portion carried by the receiving surface in which the molten powder form is movable. 15. The substrate of claim 14, wherein the molten powder is cooled to maintain its shape prior to pressing the molten powder form against the substrate, but the adhesive surface of the substrate is sufficiently viscous to adhere to it when pressed against the substrate. Said apparatus further comprising a cooling means for leaving, said cooling means being arranged in a third working part.

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