KR800000257B1 - Multi-layered marking structure - Google Patents

Abstract

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Description

Multilayer Marking Structures

Perspective view of hand stamp with the first degree marking structure

2 is a perspective view of a marking structure part of FIG. 1

3 is a cross-sectional view of the marking structure of FIG. 2 along line 3-3 shown in FIG.

4 perspective drawing of ink roll

Sectional drawing of the roll along the 5-5 line shown in FIG.

Part 6 Cross-sectional view of marking structure of stamp 6

FIG. 7 A micrograph at 5525 magnification of a partial cross section of an outer layer of a marking structure.

8 is a micrograph at 186 magnification of a partial cross section of the storage layer of the marking structure of FIG.

9 is a micrograph at 186 magnification, showing a partial cross-sectional view of the interface between the storage layer and the outer layer of the marking structure of FIG.

The present invention relates to the following marking structure.

Generally, the present invention relates to structures using various types of marking liquids, including structures of marking stamps, such as hand stamps or other printing tools, ink strips, ink rolls, and other tools that use ink in printing devices. will be. In particular, the present invention relates to a marking structure in the form of a marking liquid which, for example, is essentially permanently supplied, without the need for re-inking the marking surface repeatedly.

US Pat. Nos. 2,777,824 and 3,055,297 describe marking structures made of highly multi-process plastic materials.

This structure is visible through the microscope and is filled with marking liquid such as ink. The structure produced according to the above-mentioned US patent has brought great boundary success by "ink rolls" such as those used for hand stamping, stamping stand and also for supplying ink to the printing portion of the automatic printing apparatus. Such a structure is advantageous because it does not need to repeat the ink painting on the marking surface and the long life regardless of the operation time or the number of prints. Such a structure allows the ink to be used singly and accurately. For example, a hand stamp made using such a structure having several letters or designs molded on its surface gives a print with a high degree of clarity and uniformity. As a stamp stand such a structure places a single layer of ink on a marking tool such as a rubber stamp and does not change for a long time. Such structures of "ink rolls" can also be used repeatedly over a long period of time by evenly painting the printing tool. However, using this type of microporous structure involves a series of problems. In particular, the structures produced by the invention of US Pat. No. 2,777,824 or 3,055,297 exhibit significant dimensional instability. For example, in a hand stamp using such a structure, during its useful life, the structure is subjected to significant shrinkage, on the order of 15 to 20% of its original size, onboard.

Another problem relates to the strength and integrity of structures made according to the above-mentioned US patents. When undesired pressure is applied to such a structure, especially when shear pressure is applied to the edge of the structure or the characters on the surface thereof, small portions of the structure tend to be destroyed.

Another problem is related to the manufacturing method. For example, in the case of hand stamp, the total process time requires about 15 hours. If the process time is long, a curing process for dimensional stability of the initial molded structure is required.

Macroporous ink-containing marking structures such as those made from porous rubber, vinyl or urethane foam do not have this problem. However, the overall properties and performance of such marking equipments are considerably inferior to those produced according to the aforementioned US patent. In particular, it is known that such structures present significant problems in terms of operating time and recovery valves. The product life is very short, the resistance to high temperature and humidity is low, and there is a problem of lighting to dry.

In printing materials using such a structure, bad results such as feathering, wicking, and blemishes or bleeding sometimes occur.

The present invention is directed to solving the above problem.

In particular, the present invention is an outer layer having a microporous material formed of aggregates connected to each other such that the aggregates form a network structure corresponding to the pores and form a structure having an even bonding force, which is contained in the network Marking liquid substantially non-usable with resin, storage layer formed underneath the outer layer and formed into a porous, open porous structure, in which the thermoplastic resin, impregnated in this structure, is formed from aggregates connected to each other and is shaped like a space Multilayer marking, consisting of a marking liquid that is substantially incompatible with the thermoplastic resin of the storage and outer layers, containing the microporous material forming the tissue in the space, and the aggregates of the storage and outer layers are interconnected at the interface of the layer. Provide the structure.

Suitable structures generally receive less than about 3 to 5% shrinkage during their useful life. The structure also has greatly increased strength and greatly reduces the tendency to break.

The time required to manufacture the marking structure is only a fraction of the time required in the prior art. The pretreatment time for a representative hand stamp is about two hours because no long "cure" process is required.

The structure also has a substantially increased life time than all structures known in the art. For example, a representative hand stamp manufactured according to the above-mentioned US patent has a useful life time in the printing range of 20,000 times, but the effective life time of a comparative hand stamp made of the structure of the present invention is increased by about 10 times 200,000 printing ranges. have.

As another advantage over the structure described in the above-mentioned US patent, the structure of the present invention can be reloaded with marking liquid if necessary to further extend its effectiveness.

This advantage can be obtained without compromising other advantages of the marking structure described in the above-mentioned US patent.

The marking structure in one embodiment of the present invention is at least under the outer layer and outer layer used for applying a marking liquid such as ink as desired and connected to the outer layer at the interface of the two layers. It is a multilayer structure having one storage layer. The outer layer has a microporous material made of aggregates in which thermoplastic resins are connected to each other. The aggregates connected to each other form a structure having a substantially single bonding force, and the structure forms a network corresponding to the hole. The network of pores contains a marking liquid which is non-solvent for resin and substantially incompatible resin.

The storage layer has a microporous material contained in the open microporous structure and the macroporous structure with thin holes. The microporous material in the storage layer is a thermoplastic resin such as a resin used for the outer layer in the form of aggregates connected to each other to form a network structure of a space, such as a macroporous structure. The network of space contains the same marking liquid as that used for the outer layer, and the liquid is substantially incompatible with the thermoplastic resin of the storage layer and the outer layer.

The aggregates of the thermoplastic resin in the macroporous structure are connected to the aggregates of the thermoplastic resin of the outer layer at the interface of the two layers, and a continuous network is formed between the two layers.

The marking liquid in the storage layer is filled as the marking liquid in the outer layer is reduced in use.

Improved performance can be obtained when substantially porous and open macroporous structures are materials that are resilient to highly hardened materials. Particularly effective macroporous, open-pore structures that can greatly improve the performance of the present invention are open cell thermoset elastomeric foams. Very good results can be obtained when the porous microporous structure with thin holes is an interconnected network of polyurethane elastomers, such as the material prepared according to US Pat. No. 3,171,820.

Thermoplastic resins used for the outer layer and thermoplastic resins used for the storage layer are most suitable resins having the following functionalities. Polyvinyl chloride, polyvinyl acetate, polyvinylidene chloride, copolymers of vinyl chloride with other ethylenic, unsaturated monomers, and combinations thereof.

Such thermoplastic resins impart good performance to the marking structures of the present invention, and also plasticize copolymers of vinyl chloride and other ethylenic, unsaturated monomers to give very good and excellent performance.

The advantage of the present invention is greatly enhanced when the weight ratio of the marking liquid in the storage layer to the plasticized thermoplastic resin is greater than the weight ratio of the marking liquid to the plasticized thermoplastic resin in the outer layer.

For example, an ink rich storage layer substantially increases the useful life of the marking device of the present invention as compared to the prior art. In particular, such a ratio may be in the range of about 0.2 to 4.0 for the storage layer and in the range of about 0.1 to 1.0 for the outer layer. The most suitable case is in the range of about 0.6 to 2.0 for the storage layer and 0.3 to 0.7 for the outer layer. It is very advantageous in practice to make the weight ratio for the storage layer at least about 50% larger than in the outer layer.

Most preferably, this ratio is at least about 120%.

The marking device structural strength of the present invention is most improved when the thickness of the outer layer is substantially smaller than the thickness of the storage layer. For example, in a hand stamp structure, the storage layer has a thickness of about 0.30 inches or more while the thickness of the overlapping outer layer is about 0.10 inches.

The thickness of the outer layer is preferably less than about 1/3 of the thickness of the entire structure.

When the structure is used as a printing tool, the outer layer has a base layer having a thickness of about 0.05 inches adjacent to the underlying storage layer and an extension layer integral with the printed characters having a thickness of 0.05 inches. Structural strength of the printed structure according to the present invention is greatly improved when the thickness of the layer such as the base layer and the printed text is substantially equal and the thickness of the entire outer layer is substantially smaller than the thickness of the storage layer. Of course, the actual thickness (or height) of the layer, such as printed characters, is largely determined by the size of the printing tool.

The thickness that can be used for layers such as printed text for the printed structure of the present invention is almost the same as the size of the printed text used for the structure manufactured according to the above-mentioned US patent. Thus, such is well known to those skilled in the art.

Thus, in the form of generally permanent, independent marking liquids, which have a long service life and good dimensional stability, good performance is obtained by using marking liquids, and a useful life is extended in using marking liquids having improved structural strength. It can be seen that the marking tool can be obtained.

The marking tool also confers the advantages of macroporous liquid-containing marking structures such as those of microporous liquid-containing marking structures.

As used herein, a hore is a crack or bedbug in a material on or off of one surface of the material.

As used herein, "microhorous" is small enough not to be visually discernible to prevent substantially flowing marking liquid and large enough to allow a slight flow of marking liquid such as the liquid described herein. Speak a substance with a hole. For example, a material having a pore size that is smaller than about 100 microns in diameter and larger than about 0.5 microns in diameter. The microporous holes of the materials described herein are very irregular and differ in shape and size.

For this reason, it is difficult to measure the diameter of a hole of a specific material or the average diameter of the hole.

As used herein, microhorous material refers to a material having a pore size sufficient to contain an aggregate of the thermoplastic resins described herein. Macroporosity is generally visible to the naked eye. The macroporous hole according to the present invention can be made very large. However, by using a material having a hole of about 0.25 cm or more in diameter in the storage layer, a marking structure having an economic advantage over the device manufactured by the aforementioned patent can be obtained.

Because of the irregular shape and size of the holes of the macroporous structure used in the present invention, it is difficult to measure the "diameter" or the "average diameter" of the holes of a particular material.

1 illustrates a hand stamp 20 having a marking structure 22 according to the present invention.

As shown in FIG. 2, the marking structure 22 is a block structure having two layers including an outer layer 24 and an adjacent storage worm 26. The outer layer 24 and the storage layer 26 contain marking liquids used on the various surfaces such as paper via the outer layer 24.

3 shows a cross section of the marking structure 22. The outer layer 24 is joined to coincide with the base portion 28 and the base portion 28 adjacent the bottom layer 26 and is a layer of the base portion 28 and the letter portion 30 made of animal material. Have

The manufacture of the marking structure 22 shown is as follows. 75 mesh, a thermoplastic resin such as polyvinyl chloride powder passing through a sieve is mixed with a plasticizer such as liquid dioctylphthalate to form a plastisol. Separately, marking liquids, such as dye solvents, which are substantially inexpensive to dyes, pigment resins and inks prepared in vehicles, are most preferably used in a weight ratio of marking liquid to plastisol mixture in the range of about 0.1 to 1.0. It is added to the styrene compound. The preparation of the outer layer “premix” is stopped and the other premix is prepared in the same manner as above with the ratio of the marking liquid to plastisol mixture being most suitably in the range of about 0.2 to 4.0. The former premix is used to form the outer layer 24, the latter premix is used to form the storage layer 26, and is called a storage layer premix or a saturated premix.

Macroporous structures, such as thin and open polyurethane foam, are cut to the size and shape of the desired storage layer. This macroporous structure is vacuumed and immersed in a saturated premix prepared in advance under these conditions. It is not necessary to fill the whole with a saturated premix until the macroporous structure can no longer accept the material. However, it is desirable to saturate to the extent possible as reasonably possible.

Vacuum impregnation is very desirable, but other impregnation methods may be used.

Marking structures are formed using the size and shape of the intended marking structure with the letters, etc. carved as intended on the lower surface. To form letters, etc., on the outer surface premix, pour into this mold approximately twice the thickness of the mold used. The impregnated macroporous structure is then placed on top of the outer layer premix. Tighten the cover to fit the mold to seal the material in confined spaces.

Depending on the type of thermoplastic used primarily for the size and shape of the marking structure produced, this mold is typically heated to a high temperature of about 200 to 400 ° F. for about 5 to 50 minutes. During molding the premix of the outer layer is fused with the premix of the storage layer. The thermoplastic resin of the outer layer and the storage layer bonds together at the interface 44 of the two layers with the aggregate forming the aggregate, and the aggregate of the outer layer forms a network structure of holes partially filled with the marking liquid. Agglomerates in the storage layer form a large porous structure and a network of spaces partially filled with a marking liquid of saturated premix.

The marking structure in the sealed liquid is cooled to room temperature by placing the sealed mold under the condition of cooling below room temperature, that is, by circulating the cooling liquid around the mold or by simply leaving the mold at room temperature for a certain time. The marking structure is removed from the mold and placed in a suitable holder, such as the holder shown in Figure 1, and then the marking structure is used.

The thermoplastics used for the saturation premixes and the external premixes do not have to be the same material. However, the thermoplastic resin should be able to fuse one resin with the other resin at the interface 44 of the outer layer 24 and the bottom layer 26 during the curing method. A wide variety of thermoplastics are used in the marking structures of the present invention. Moreover, resin which melt | dissolves at the temperature below the boiling point of the marking liquid used with resin can be used for this invention. The inventors have found that synthetic resins can be used here.

Examples of thermoplastic resins that can be used are polyvinyl chloride, polyvinyl acetate, polyvinylidene chloride, polyvinyl butyral, cellulose acetate butyrate, polymethyl acrylate, methyl polyacrylate, polysulfone and copolymers and combinations thereof. Most suitable resins include copolymers of polyvinyl chloride, polyvinyl acetate, polyvinylidene chloride, vinyl chloride and other ethylenically unsaturated monomers and combinations thereof. Most suitable resins are copolymers of polyvinyl chloride.

Plasticizers are used to form two premixes in amounts of about 40 to 160% by weight of the resin. There are many examples of suitable plasticizers used with thermoplastics. The plasticizer used must be compatible with the resin such that the plasticizer softens the resin so that the resin forming the marking structures of the present invention can form aggregates. Examples of plasticizers suitable for use such as polyvinyl chloride, polyvinyl acetate, polyvinylidene chloride, copolymers of vinyl chloride and other ethylenically unsaturated monomers or combinations thereof include tricresyl phosphate, dioctyl phthalate, butylbenzylphthalate, Trioctyl phosphate. Other plasticizers used with various thermoplastics are well known to those skilled in the art as described herein. The initially described patent lists plasticizers used with a wide variety of thermoplastic resins. Most of these plasticizers are suitable for use in the present invention. The use of plasticizers facilitates the formation of aggregates in which thermoplastics are interconnected. Aggregates of thermoplastics are reacted and bonded by heating to form a binding structure.

The marking liquid used in the present invention is suitable for the intended purpose and should be incompatible with the thermoplastic resin used in view of the fact that such liquid does not soften or dissolve such resin in practice. For example, a wide variety of marking liquids are known which are known to those skilled in the art. Inks are generally made of dyes, pigments, dye solvents and beechols. Such solvents and behicols should not readily dissolve the resin. Examples are aliphatic hydrocarbons, castor oil esters, ethanolamines, fatty acids, fatty acid esters, glyceryl ester glycols, glycol esters, martin oils, mineral oils, polyethylene and polypropylene glycols and vegetable oils. Dyes are generally used in such inks in amounts of about 5 to 25% of the total ink weight. The dye must of course be soluble in the dye solvent used. Color pigments are generally dispersed in used beechol in amounts of about 2 to 20% of the weight of the ink. The pigment particle size must be small enough to pass through the microporous sublayer of the present invention.

Persons skilled in the art who understand the present invention can know suitable marking liquids and can also produce suitable marking liquids.

Marking liquids mean different kinds of inks and for other different purposes also means other liquids which can be used in the same way, ie by contact of the outer layer with the desired adaptation surface.

The porous porous structure having a thin and open hole used in the storage layer of the present invention is a thermosetting elastomer foam, for example, polyurethane foam, polyvinyl chloride foam and polyethylene foam, highly porous balsa wood, corrugated fuji Manufactured from a wide variety of materials, including squeezed non-tissue cellulose or synthetic fibers, woven fabrics such as cotton cloth, sponge rubber, synthetic sponge rubber, synthetic sponge materials, natural sponges, reaction nylon and entangled glass fibers, e.g. fibrous soft materials do.

Preferred is a material that is elastic, i.e., a material that is slightly deformed but can be returned to its original size and shape. Examples of elastic materials include thermoset elastomer foam, polyvinyl chloride foam, polyethylene foam, sponge rubber, synthetic sponge materials and belts, and natural sponges.

This is because the compression action and the shape occurring during the use of the marking liquid by pressure are restored, which is useful for promoting the passage of the marking liquid from the storage layer to the outer layer.

Thin and frozen thermoset elastomeric foams are the most suitable macroporous structures for use in the present invention. The structure described in U.S. Patent No. 3,171,820 is very good as a porous, porous porous structure used in the present invention.

The structure described in US Pat. No. 3,171,820 is a strand three-dimensional network structure in which polyurethane resins are connected to each other.

The strands are completely connected to each other at a spatially separated point to form isotropic skeletal contours of a plurality of polyhedrons that are polygonal in face and adjacent to each other and strands and chains in which permeability is degraded.

4 shows ink 34 that can be used as an automatic printing device to ink roll the surface of a print by contact with the print. As shown in FIGS. 4 and 5, the ink roll 34 has an outer layer 24 and a storage layer 26. As shown in FIG. The outer layer 24 is cylindrical in shape and surrounds the ink roll 34. The storage layer 26 is an adjacent inner cylindrical structure that forms an opening 36 for use in installing the ink roll 34 in the apparatus along its axis.

The ink roll 34 is substantially similar to the marking structure in all respects except for the shape. The ink roll 34 can be manufactured in a cylindrical columnar mold in which the vertical position, that is, the axis, is vertically arranged. The mold has an annular space around the center rod used to form the opening 36. In general, a macroporous structure of the shape and size of the storage layer 26 is placed around a rod in a mold used to impregnate the structure 22 with a saturated premix as described above. The outer layer premix is poured into the mold to fill the remaining space around the saturated macroporous structure. The mold is covered and processing continues as in the case of the marking structure described above. In producing the ink of the present invention, it is not necessary to seal the mold by a method of preventing expansion. Indeed it is allowed to expand slightly in the axial direction of the rod.

6 shows a part of the stamp stand 38. The stamp stand 38 has an outer layer 24 and a storage layer 26 and has the same character as the letter 30 shown in FIGS. 2 and 3 with the surface 40 of the stamp stand 38 being flat. It is the same as the structure 22 in all respects except being continuous.

The stamp stand 38 may be manufactured using the same method as the manufacturing of the marking structure 22.

Those skilled in the art can find other satisfactory manufacturing methods.

In the outer and storage layers, the amount of the marking liquid and the ratio of the marking liquid are determined by the end use purpose and the characteristics of the marking structure intended by the present invention. As indicated in the storage layer, the weight ratio of the marking liquid to the thermoplastic resin is in the range of about 0.2 to 4.0. Below a ratio of about 0.2, there is no substantial supply of marking liquid from the storage layer to the outer layer. Above a ratio of about 4.0, the storage layer preferably contains no marking liquid. The preferred ratio of marking liquid to thermoplastic is in the range of about 0.6 to 2.0. Within this range, excellent supply of the marking liquid from the storage layer to the outer layer example and excellent storage of the marking liquid in the storage layer are possible.

For the outer layer, the ratio of marking liquid to thermoplastic should be in the range of about 0.1 to 1.0. Below about 1.0, almost no marking liquid can be used on the intended surface. At about 1.0 or more, the strength and structural integrity of the outer layer are greatly reduced, and there is a tendency to release the marking liquid even when the marking structure is not used. If for the purpose of hard printing or hard deposition, the ratio of marking liquid to thermoplastic should be significantly lowered. Also, for heavy printing or heavy deposition, the ratio of marking liquid to thermoplastic must be significantly high.

The preferred range for the ratio of marking liquid hyperplastic resin in the outer layer is about 0.3 to 0.7. In this range, printing of strength can be performed, and the quality of sewing is also very good.

The intensity of printing or the amount of deposition of the marking liquid is determined by the amount of marking liquid used in the outer layer of the marking structure of the present invention. Even when used in the storage layer at a very high ratio of marking liquid to synthetic resin, the strength of printing, i.e. the amount of marking liquid deposited by one contact or printing, generally remains constant.

7, 8 and 9 are micrographs of the marking structure of the present invention. In these drawings, the marking liquid is taken out of the marking structure so that the aggregate and the macroporous structure in which the thermoplastic resins are connected to each other can be more easily shown.

7 is a partial cross section of the outer layer of the marking structure at 5.525 magnification. The outer layer has an aggregate 46 in which plasticized thermoplastics are connected to one another. The aggregate 46 forms a network structure corresponding to the hole 48 extending to the marking surface via the outer layer at the interface of the outer layer with the storage layer.

This network structure flows liquid from the interface to the marking surface.

8 is a micrograph of a partial cross section of a storage layer of a marking structure according to the invention at 186 magnification. The macroporous structure used is a network of strands in which polyurethane elastomers are interconnected. Scottcottt's trade name Scott paper Company of philadelphia.

The structure includes strands 50 connected to each other. The gaps between the strands 50 contain microprocessing materials formed of aggregates 52 in which thermoplastic resins are connected to each other. The aggregate 52 and the strand 50 form a network structure in the space extended through the storage layer.

9 is a micrograph of a partial cross section of the interface of the storage and outer layers of the marking structure according to the invention. 9 is enlarged to 186 times. It can be seen that the outer layer 24 and the bottom layer 26 comprise aggregates in which thermoplastic resins are connected to each other and such aggregates are connected to the interface 44. A strong bond is formed between the two layers connected to each other at the interface 44. At the interface 44, a space is formed to enable the liquid flow of the layer.

It is generally suitable to have only one storage layer, but in some cases multiple storage layers may be used. In such cases, the ratio of marking liquid to plasticizer can be increased compared to each continuous storage layer away from the outer layer.

In each of the examples below, the marking liquid is mixed for use in the outer layer premix. This marking liquid (marking liquid A) can also be used for the storage layer. In most cases, however, other marking liquids (marking liquid B) are prepared for use in the storage layer (or saturation) premix.

Pastes or slurries used in the preparation of the outer layer premix are prepared by mixing powdered thermoplastics with one or more components with liquid plasticizers with one or more components. By mixing this paste or slurry with a liquid plasticizer having two or more components, other pastes or slurries (prestisol B) used for the preparation of the storage layer premix are also prepared. Prastisol A is mixed with marking liquid A to form an outer layer premix. The plastisol B is mixed with the marking liquid B (in some cases, the marking liquid A) to form a storage layer premix. In the case of using the second storage layer, the marking liquid is mixed again to prepare a plastisol. These are mixed to form the premix used for this second storage layer.

In each of the examples below, the thin, open macroporous structure is cut to the required size or made to the required size using other methods.

The following examples give a detailed description of the manufacture of marking structures.

Example 1

Hand stamps are made in Examples 1-12. In Example 1, the following marking liquids and plastisols are prepared.

Marking Liquid A:

The outer layer premix is made by mixing 65 parts of plastisol A and 35 parts of marking liquid A35. The storage layer premix is made by mixing the marking liquid B54 part and the plastisol B46 part. In this embodiment the weight ratio of the plastic resin to the marking liquid of the storage layer is about 120% greater than that of the outer layer.

Thin, open, porous structures are made by cutting pieces of Scott Vault's 5-600 polyurethane elastic foam into 2-5 / 8 inch x 3/4 x 1/4 inch square blocks. The Scottsort 5-600 material is available from Scott Paper Company, Philadelphia, PA. The designation "5-600" is used by Scott Paper Company to distinguish between various types of Scottscott material and is used to describe the properties of the material. "5" indicates a density of about 10 pounds per cubic foot (manufacturer uses a factor of 2); "600" indicates approximately 60 holes per inch of straight line in the uncompressed state (manufacturer uses a factor of 0.1 )do. Other figures for the Scottscott material are interpreted in the same way.

The macroporous structure is deposited in a storage layer premix contained in a small container that can accommodate the macroporous structure. The vessel with the deposited macroporous structure is placed in a vacuum chamber and vacuumed for about 5 minutes. During this time, air is removed from the bulk of the process structure. When the container is removed from the vacuum chamber, atmospheric pressure introduces a storage layer premix into the pores in the macroporous structure.

An aluminum mold is created with a 2-5 / 8 inch by 3/4 inch footprint and 3/8 inch bottom depth and an embossed space 0.75 inch long.

The outer layer premix is applied to the mold to cover the marking surface of the mold, creating a space where printed characters are formed. The premix is injected throughout the depth of about 0.15 inch, including the depth of the type engraved in the mold, and then the saturated macroporous structure is placed in contact with and adjacent to the outer layer premix. Saturated macroporous structures expand slightly over the opening end of the mold because they swell slightly during saturation. The mold is sealed and these structures are compressed to form a generally sized space.

The closed mold is heated at 265 ° F. for 15 minutes at a pressure of 10 pounds per square inch. After the heating operation, the mold is cooled under atmospheric pressure. After cooling, the marking structure is removed from the mold and installed in a suitable device as shown in Figure 1.

Example 2

The following marking liquid and plastisol were prepared.

Marking Liquid A

The outer layer premix is made by mixing the marking liquid A50 part and the plastisol A50 part. In this embodiment, the weight ratio of the plastic resin to the marking liquid of the outer layer is about 1.0. The storage layer framix is made by mixing the marking liquid B60 part and the plastisol B40 part, and in this embodiment, the weight ratio of the plastic resin to the marking liquid of the storage layer is about 50% larger than that of the outer layer.

The perforated macroporous structure is made by cutting a piece of sponge rubber (1/4 inch open cell flat sponge) from a standard rubber product (Elk, Grave Village) to the same size as used in Example 1. This macroporous structure is impregnated into the storage layer premix in the same manner as in Example 1.

Molds and shaping pieces are the same as in Example 1 except for the special explanation. The closed mold is heated to a temperature of 255 ° F. for 10 minutes under a pressure of 20 pounds per square inch.

After the heating operation, the mold is cooled under atmospheric pressure. After cooling, the marking structure is bent from the mold and installed in a suitable device as in Example 1.

Example 3

The following marking liquid and plastisol were prepared.

Marking Liquid A:

The outer layer premix is prepared from 24 parts of marking liquid A and 76 parts of plastisol A. The weight ratio of the plastic resin to the marking liquid of the outer layer is about 0.3 in this example. Storage layer premix is prepared by mixing marking fluid B32 part and plastisol B68 part.

The perforated macroporous structure is made by cutting a piece of mechanically foamed vinyl foam, with a concentration of 20 pounds per cubic foot, the same size as used in Example 1. The macroporous structure is impregnated into the storage layer premix by the same process as described in Example 1.

Molding and molding operations are the same as those in Example 1 except for the explanation. The closed mold is heated to a temperature of 245 ° F. for 10 minutes under a pressure of 10 pounds / cubic inch. After the heating operation, the mold is cooled under atmospheric pressure. After cooling, the marking structure is removed from the mold and installed in a suitable device as shown in FIG.

Example 4

The following marking liquid and plastisol are prepared.

Marking Liquid A:

Marking Liquid B:

The outer layer premix is made by mixing the marking liquid A35 part with the plastisol A65 part. During storage, the premix (premix B) is made by mixing the marking liquid B60 part with the plastisol B40 part, and the second storage layer premix (premix C) is made by mixing the marking liquid C80 part and the plastisol C20 part.

Two, thin, open macroporous structures are produced by cutting pieces of Scottsworth 5-800 material into square blocks of 2-3 / 8 inches by 3/8 inches by 1/4 inch.

The large porous structure of Scottsort 5-800 material is impregnated in storage layer premix B, and the macroporous structure of Scottsort 5-600 material is impregnated in storage layer premix C. Impregnation is carried out as in Example 1. .

Aluminum molds with a carved space of 2-3 / 8 inches x 3/8 inches with a bottom depth of 5/8 inches are manufactured.

The outer layer premix is placed adjacent to the marking surface and applied to the mold to fill the print type and back to a depth approximately equal to the depth of the type. A large porous structure saturated with Premix B is placed in the mold adjacent and in contact with the outer layer premix. The macroporous structure saturated with Premix C is placed in a mold adjacent and in contact with another macroporous structure. The mold is sealed and its structure compressed to form a fixed space, usually of a fixed size.

The closed mold is heated to 265 ° F. for 20 minutes under a pressure of 50 pounds per square inch. After heating operation, the mold is cooled under atmospheric pressure. After cooling, the marking structure is removed from the mold and installed in a suitable device as shown in Figure 1.

Example 5

Next, marking liquid and plastisol are prepared.

The outer layer premix is made by mixing the marking liquid A9 part with the plastisol A91 part. The weight ratio of the plastic resin to the marking liquid of the outer layer of this embodiment is about 0.1. The storage layer premix is made by mixing plastisol B83 part and marking liquid B17 part. The weight ratio of the plastic resin to the marking liquid of the storage layer of this embodiment is about 0.2.

The macroporous structure, which is thin and open, is made by cutting a piece of Scott Bright P-type nylon cleaned and surface-treated material to the same size as used in Example 1. Scottbright P-type materials are available from Scott Paper Company, Philadelphia, PA. This macroporous structure is impregnated into the storage layer premix by a process as described in Example 1.

Molding and molding operations are carried out according to the process of Example 1. The closed mold is heated to a temperature of 240 ° F. for 15 minutes under a pressure of 10 pounds per square inch. After the heating operation, the mold is cooled under atmospheric pressure. After cooling, the marking structure is removed from the mold and installed in a suitable device as shown in FIG.

Example 6

Hand stamping is performed according to Example 5, except that the macroporous structure is made from Scottscott 3-800 material. Here, the marking property of the marking structures of Examples 5 to 6 is greatly improved. Scott felt material provides a very good macroporous structure.

Example 7

The following marking liquid and plastisol are prepared.

The outer layer premix is made by mixing 35 parts of marking liquid A with 65 parts of plastisol A. The bottom layer premix is made by mixing 80 parts of marking liquid B and 20 parts of plastisol B. The weight ratio of the plastic resin to the marking liquid of the storage layer of this embodiment is very high, about 4.8.

The porous microporous structure, which is thin and open, is made by cutting a piece of Scott Vault 5-450 material to the same size as in Example 1. This macroporous structure is impregnated into the storage layer premix by the same process as described in Example 1.

The outer layer premix is placed in the mold adjacent to the marking surface to fill the space forming the print type. The premix is added to about twice the depth of the type inscribed in the mold, and then the saturated macroporous structure is placed in contact with and adjacent to the outer layer premix. Saturated, low porosity structures extend beyond the ends of the template. A 0.010 inch thick backing layer of vinylplastisol (50% polyvinyl chloride homopolymer resin and 50% tricresyl phosphate) was placed on a saturated macroporous structure and melted during the heating operation.

The closed mold is heated to a temperature of 270 ° F. for 10 minutes under pressure of 50 pounds per square inch. After the heating operation, the mold is cooled under atmospheric pressure. After cooling, the marking structure is removed from the mold and installed in a suitable device as shown in FIG. The backing layer in this embodiment mainly facilitates the installation and also gives a good surface to the adhesive which can be used according to the installation purpose.

Example 8

The following marking liquid and plastisol were prepared.

The outer layer premix is made by mixing 35 parts of marking liquid A and 65 parts of plastisol A. The storage layer premix is made by mixing 67 parts of marking liquid B and 33 parts of plastisol B. In this embodiment, the weight ratio of the plastic resin to the marking liquid of the storage layer is about 2.0.

The perforated macroporous structure is made by cutting a piece of Webtil # 2951 non-woven (Kendall Fiber products, Walpole, Massachusetts) to the same size as used in Example 1. This macroporous structure is impregnated into the storage layer premix according to a process as described in Example 1.

Molding and molding operations are the same as in Example 1 except as described below. The closed mold is heated to a temperature of 250 ° F. for 15 minutes under 15 pounds / inch pressure. After the heating operation, the mold is cooled under atmospheric pressure. After cooling, the marking structure is removed from the mold and installed in a suitable device as in FIG.

Example 9

Next, marking liquid and plastisol are prepared.

The outer layer premix is made by mixing 42 parts of marking liquid A and 58 parts of plastisol A. The weight ratio of the plastic resin to the marking liquid of the outer layer of this embodiment is about 0.7. The storage layer premix is obtained by mixing 67 parts of marking liquid B and 33 parts of plastisol B. The porous microporous structure with thin holes is made by cutting the urethane foam type 800 material (Foam Craft, Inc., Chicago, Illinois) to the same size as used in Example 1.

Molding and molding operations are the same as in Example 1 except as described below. The closed mold is heated to a temperature of 280 ° F. for 10 minutes at 25 pounds / square inch pressure. After heating operation, the mold is cooled under atmospheric pressure. After cooling, the marking structure is removed from the mold and installed in a suitable device as shown in FIG.

Example 10

Next, marking liquid and plastisol are prepared.

The outer layer premix is made by mixing 35 parts of marking liquid A and 65 parts of plastisol A. The storage layer premix is made by mixing 60 parts of marking liquid B and 40 parts of plastisol B.

The microporous structure, which is thin and open, is made by cutting a piece of Scott Vault 5-600 material to the same size as used in Example 1.

Molding and molding operations are the same as in Example 1 except as described below. The closed mold is heated to a temperature of 265 ° F. for 15 minutes under a pressure of 20 pounds per square inch. After heating operation, the mold is cooled under atmospheric pressure. After cooling, the marking structure is removed from the mold and installed in a suitable device as shown in FIG.

Example 11

The following marking liquid and plastisol were prepared.

Another outer layer premix is made by mixing 35 parts of marking liquid A and 65 parts of plastisol A. The storage layer premix is made by mixing 60 parts of marking liquid B and 40 parts of plastisol B.

The perforated macroporous structure is made by cutting a piece of standard wool carpet (1/2 inch twist mat) made by King of prussia, Pa to the same size as used in Example 1. This macroporous structure is impregnated into the storage layer premix according to a process as described in Example 1.

Molding and molding operations are used with slightly varying Example 1. The closed mold is heated to a temperature of 285 ° F. for 10 minutes under 50 pounds / square inch pressure. After heating, the mold is cooled at atmospheric pressure. After cooling, the marking structure is removed from the mold and installed in a suitable device as shown in FIG.

Example 12

The following marking liquid and plastisol were prepared.

The outer layer premix is made by mixing 30 parts of marking liquid A and 70 parts of plastisol A. The storage layer premix is made by mixing 38 parts of marking liquid B and 62 parts of plastisol B. The weight ratio of the plastic resin to the marking liquid of the storage layer of the present invention is about 0.6.

The microporous structure with a thin and open hole is made by cutting a piece of Scott Vault 5-450 material to the same size as used in Example 1. This macroporous structure is impregnated into the storage layer premix according to the same process as in Example 1.

Molding and molding operations are the same as in Example 1. The closed mold is heated to a temperature of 290 ° F. for 10 minutes under a pressure of 20 pounds per square inch. After the heating operation, the mold is cooled under atmospheric pressure. After cooling, the marking structure is removed from the mold and installed in a suitable device as shown in FIG.

Example 13

In Examples 13 to 16, ink rolls were prepared. In Example 13, the following marking liquid and plastisol were prepared.

The outer layer premix is made by mixing 35 parts of marking liquid A and 65 parts of plastisol A. The storage layer premix is made by mixing 80 parts of marking liquid B and 20 parts of plastisol B.

The large, open, porous porous structure is a cylindrical annular block measuring 1-3 / 4 inches in diameter x 1 inch in diameter x 1/2 inch, made by die cutting a piece of Scott Vault 5-800 material.

The macroporous structure is deposited in a storage layer premix contained in a small container that can accommodate such a structure. The vessel with the deposited macroporous structure is placed in a vacuum chamber and vacuumed for about 10 minutes. Air is removed from the macroporous structure during this period. When the container is removed from the vacuum chamber, atmospheric pressure introduces the storage layer premix into the pores of the macroporous structure.

The center wick piece is made of an aluminum mold with a cylindrical space. The saturated macroporous structure is pushed into the center of the mold, which is the same size as the inside diameter of this porous structure. The outer layer premix is applied to the mold surrounding the saturated macroporous structure adjacent to the cylindrical outer wall of the mold space.

The mold is sealed and its structure is compressed to form a space having a generally fixed size.

The closed mold is heated to 265 ° F. for 20 minutes under a pressure of 1 pound / square inch. After the heating operation, the mold is cooled under atmospheric pressure. After cooling, the marking structure is removed from the mold and used.

This method is used to form ink rolls. It also aims to form prints that can be used by engraving letters directly on the outer walls of molds.

Example 14

The following marking liquid and plastisol were prepared.

The outer layer premix is made by mixing 35 parts of marking liquid A and 65 parts of plastisol A. The storage layer premix is made by mixing 85 parts of marking liquid B and 20 parts of plastisol B.

Microporous structures with thin holes are made by cutting nonwoven fabric pieces into an outer diameter of 1-3 / 4 inches and winding them on a shaft.

Except as specifically explained, the lower needle and the molding operation were carried out according to the process of Example 13 to form an ink roll. The closed mold is heated to a temperature of 270 ° F. for 25 minutes under pressure of 5 pounds / square inch. After heating, the mold is cooled under atmospheric pressure.

Example 15

The following marking liquid and plastisol were prepared.

The outer layer framix is made by mixing 35 parts of marking liquid A and 65 parts of plastisol A. The storage layer premix is made by mixing 54 parts of marking liquid B and 46 parts of plastisol B.

The perforated, macroporous structure is made of die-cut Scottcottt 3-800 material pieces with a cylindrical annular block of 3/4 inch outside diameter x 1/4 inch inside diameter and 1/4 inch size.

Except as specifically described, impregnation and molding operations are performed in accordance with the process of Example 13 to form an ink roll. The closed mold is heated to a temperature of 290 ° F. for 15 minutes under 5 pounds / square inch pressure. After heating, the mold is cooled under atmospheric pressure.

Example 16

The following marking liquid and plastisol were prepared.

The outer layer premix is made by mixing 35 parts of marking liquid A and 65 parts of plastisol A. The storage layer premix is made by mixing 54 parts of marking liquid B and 46 parts of plastisol B.

The perforated, macroporous structure is a cylindrical annular block measuring 3/4 inch outside diameter x 1/4 inch inside diameter x 1/4 inch size, made by die cutting a standard piece of wool bolt (medium coarse fiber grade 1653).

Impregnation is carried out as described in the above examples.

Except as specifically explained, an impregnation and a shaping | molding operation are performed together and an ink roll is formed.

The closed mold is heated to a temperature of 285 ° F. for 20 minutes under a pressure of 5 pounds / square inch. After heating, the mold is cooled under atmospheric pressure.

Example 17

In Examples 17 and 18, an ink bag was manufactured. In Example 17, the following marking liquid and plastisol were prepared.

The outer layer premix is made by mixing 50 parts of marking liquid A and 50 parts of plastisol A. The storage layer premix is made by mixing 60 parts of marking liquid B and 40 parts of plastisol B.

The microporous structure, which is thin and open, is made by cutting a piece of 5-1,000 material Scott Scottt, 5 inches x 2-1 / 2 inches x 1/4 inches. Impregnation operation was carried out as in Example 1.

The brass molds are made with 5 inch x 2-1 / 2 inch square block space and 3/8 inch deep. The outer layer premix is applied to a mold adjacent to the marking surface to fill a space about 1/8 inch deep and then the saturated macroporous structure is placed adjacent and in contact with the outer layer premix. Saturated large multiprocess structures expand slightly beyond the ends of the mold space because they slightly expand during impregnation. The mold is sealed and its structure compacted to form a space having a generally fixed size.

The closed mold is heated to 250 ° F. for 15 minutes under 20 pounds / square inch pressure. After heating, the mold is cooled under atmospheric pressure. After cooling, the marking structure is removed from the mold and placed in a suitable container for use with the ink can.

Example 18

The following marking liquid and plastisol were prepared.

The outer layer premix is made by mixing 24 parts of marking liquid A and 76 parts of plastisol A. The storage layer premix is made by mixing 32 parts of marking liquid B and 68 parts of plastisol B.

The porous microporous structure with a thin hole is made by cutting a piece of polyurethane foam type 600 (Foam Craft Inc., Chicago, Ilinois) to the same size as in Example 17. Impregnation operation is carried out according to Example 1.

It implements according to Example 17 except having specifically demonstrated. The closed mold is heated to 250 ° F. for 15 minutes under 20 pounds / square inch pressure. After the heating operation, the mold is cooled at atmospheric pressure and after cooling, the marking structure is removed from the mold and placed in a container suitable for use as an ink bag.

The present invention as described above has been described with reference to certain embodiments and many details have been presented through description. Accordingly, embodiments or details of the present invention can be sufficiently modified within the object of the present invention.

Claims (1)

The outer layer with the extremely small porous material formed of aggregates in which thermoplastic resins are connected to each other is substantially incompatible with the resin contained in the network so that the aggregates form a substantial network structure in the pores and form a structure with substantially the same binding force. It is formed from agglomerates in which the adult marking liquid, the storage layer of a large, open, multi-hole structure with thin holes and a hole under the outer layer, and the thermoplastic resin impregnated in the structure are connected to each other. It consists of a very small porous material that forms a network of space together, a storage liquid contained in this space, and a marking liquid which is incompatible with the thermoplastic resin of the outer layer, and the aggregates of the storage layer and the outer layer are connected to each other at the interface of the layer. Multilayer marking structure.

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