JPH0899359A - Photosensitive resin contained in transparent thin film container, its manufacture, and shaping method using the resin - Google Patents

Abstract

PURPOSE: To prevent inferior articles from occurring by excluding air mixed in the resin when a product is shaped by using photosensitive resin. CONSTITUTION: Two transparent thin film sheets 5, 7 are superimposed on each other, and its peripheral fringe sealing part 8 excepting a part thereof is sealed to construct a bag shaped container 3. A specific amount of resin 21 is supplied to a bottom part 19 of the container from an opening part of an unsealed upper side 17. Thereafter, the sheet is partially sealed in a sectioned sealing part at a position above the resin, and the container is sectioned into two rooms 11, 13. Besides, an interconnecting part 15 between two rooms is formed. Air remaining in the container is sucked by a suction means, and the opened peripheral fringe part 8 is sealed. The resin 1 contained in the container is laid on an under side glass 27, and an upper side glass is moved in a direction being horizontal from an inclined position. A side surface of the container is successively pressed to the sectioned sealing part from under to exclude the air from one side room to the other side room.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding method using a photosensitive resin as a material, and more specifically to a photosensitive resin contained in a transparent thin film container and a method for manufacturing the same, which is used in such a molding method. Relates to a molding method using such a photosensitive resin contained in a transparent thin film container.

[0002]

2. Description of the Related Art For example, it cures when exposed to ultraviolet rays,
Various products are formed using a so-called photosensitive resin. As an example of such molding, there is, for example, molding of the stamp surface of a stamp, and conventional stamping or molding of rubber or the like using a mother die is used to manufacture the stamp surface using the photosensitive resin. It can be done by technology.

FIG. 6 schematically shows the basic construction of a conventional stamp manufacturing apparatus using a photosensitive resin. In the figure, reference numerals 51 and 53 are transparent upper glass and lower glass. A transparent thin base film 55 made of an appropriate material such as polyester is disposed below the upper glass 51. On the other hand, on the lower glass 53, the negative film 5 on which the characters, symbols and frames of the stamp surface of the stamp to be produced are photographed
7 is placed, and a cover film 59 made of the same material as the base film is further laminated thereon. 6
Reference numeral 1 denotes a spacer. For example, an ultraviolet curable resin 63 is provided in a resin storage portion 62 formed by being surrounded by the spacer 61.
Are filled. Reference numerals 65 and 66 are lamps that emit ultraviolet rays. In the illustrated state, first, ultraviolet rays are irradiated by the ultraviolet lamp 65 through the upper glass 51 and the base film 55, and the upper portion of the filled resin 63 is hardened by a predetermined thickness over the entire surface, and the stamp base portion is formed. To form. Next, with the ultraviolet lamp 66, the lower glass 5
3, ultraviolet rays are radiated through the negative film 57 and the cover film 59 to cure the resin of the portion corresponding to the portions of the negative film 57 such as characters and symbols which are transparent, until it reaches the base portion previously formed. Then, both the base film 55 and the cover film 59 are taken out, these films are peeled off, and the uncured resin is washed away using a detergent solution. Reference numeral 54 is an air suction hole formed in the lower glass. Air is sucked from here by a suitable means to remove air from between the negative film 57 and the cover film 59, and these films are removed. They are to be in close contact with each other.

[0004]

By the way, in the above-described conventional molding method, the resin is supplied from the resin tank (not shown) storing the resin to the resin storage portion 62 every time the stamp is manufactured. ing. At that time, since the resin has a very high viscosity, the resin containing portion 6 is very slowly
2 tries to spread over the entire inside of the base 2, so that the base film 5
5. A large force is applied through the upper glass 51 to allow excess resin to seep out from between the spacer 61 and the base film 55, and ultraviolet irradiation is performed in this state.

However, when the resin is supplied from the resin tank or while working with the squeezer, air may be mixed into the resin poured into the resin storage portion to form bubbles. Some of these bubbles are extremely small, and some cannot be found instantly. Even if it can be found, it is not easy to remove the bubbles from the highly viscous resin and it takes time. Then, the small air bubbles may be collected during the subsequent work to become a larger air bubble. Even if a stamp is produced by irradiating ultraviolet rays while containing such bubbles, if the bubbles are present in the characters, symbols, etc. of the stamp, that is, the part to be hardened, it is a partly missing character, It becomes a symbol etc. and it becomes a defective product.

The present invention has been made in view of the above problems, and it is an object of the present invention to easily remove air contained in a resin provided for modeling so that a molded product does not have a missing portion. To aim.

[0007]

In order to solve the above-mentioned problems, in the present invention, an upper sheet and a lower sheet made of transparent thin films are laminated, and a peripheral sealing portion of the peripheral portion is partially removed. By bonding, to form a bag-shaped container having an opening, a predetermined amount of photosensitive resin is injected from the opening toward the bottom of the container, the upper sheet and the lower sheet, the bag The photosensitive resin was received in the bag above the photosensitive resin injected into the bag, except for a part between two positions of the peripheral seal portion, which were separated from each other, except for a part. The first chamber and the second chamber close to the opening are partitioned and a communication portion is formed between the first and second chambers, and then air is discharged from the inside of the bag to open the opening. The part is sealed to produce a photosensitive resin in a transparent thin film container.

In the present invention, the resin in such a container is provided with one of the two chambers on the upper side and the other on the lower side,
The air present in the container is gathered on the upper part of the resin contained in the container, then the container is laid on the lower transparent plate, and the upper transparent plate is in a horizontal direction from an oblique state. To the upper surface of the other chamber from the bottom of the other chamber, the resin in the container is moved from the bottom to the top of the other chamber, And a step of moving the air collected in the upper part of the above into the one chamber, the method for forming a photosensitive resin is provided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. However, the scope of the present invention is not limited to the specific configurations of the embodiments described below.

FIG. 1 is an elevation view of a photosensitive resin 1 containing a transparent thin film container according to an embodiment of the present invention, and FIG. 2 is a side sectional view thereof. This bag-shaped container 3 is formed by stacking two upper and lower sheets 5 and 7 made of a rectangular transparent thin film made of an appropriate material such as PET (polyethylene terephthalate) and having substantially the same dimensions, and the periphery thereof. The seal portion 8 is sealed by thermocompression bonding. And the container 3 is further
The upper and lower sheets 5 and 7 are partially thermocompressed inside thereof to form a partition seal portion 9 extending in parallel to the upper side 17 of the container 3, and a relatively small space is provided inside the container 3. It is divided into an upper chamber 11 and a lower chamber 13 having a relatively large space. The partition seal portion 9 is continuous with the peripheral edge seal portion 8 at both ends thereof, but is not crimped by a predetermined width at substantially the center thereof, and the upper and lower chambers 1
A communication part 15 between the first and the third parts is formed.

In the lower chamber 13 of the container 3, a resin 21
Is stored. In this embodiment, the resin 21 is an ultraviolet curable resin. The resin 21 is not filled enough to completely fill the inside of the container 3, but is contained in a sufficient amount to manufacture a desired stamp. Then, by sucking and removing the air in the container 3, the upper and lower sheets 5 and 7 are in close contact with each other in the portion where the resin 21 does not exist.

The process of filling and sealing the resin 21 in the transparent thin film container 3 will be described. First, two transparent thin film sheets 5 and 7 are laminated, and a fixed length portion of a peripheral portion thereof, a book. In the embodiment, since a container having a substantially rectangular shape in a plane is used, the peripheral side seal portions 8 on the other three sides are bonded by thermocompression bonding, leaving the upper side 17 in FIG. Next, while holding the container 3 with the upper side 17 facing upward as shown in FIG.
A predetermined amount of resin 21 is injected into the lower portion 19 of the container 3 from an opening formed at the side 17 by using an appropriate nozzle or the like. Next, while maintaining this posture, thermocompression bonding is performed to form the partition seal portion 9. At this time, the communication portion 15 is also formed at the same time. The partition seal portion 9 is formed above the upper end of the resin 21 injected into the container 3. Next, the air in the container 3 is sucked and removed from the opening of the upper side 17 which is still open by using a suction means as appropriate. And finally, the upper side 1
7 is thermocompression-bonded and sealed. As a result, the resin 21 in the container 3
In the portion where is not satisfied, the two sheets 5 and 7 are in close contact with each other.

As described above, the resin 21 is injected into the container 3 and then the air in the container 3 is sucked and removed. When the resin 21 is injected, the air becomes bubbles in the resin 21. May be mixed in. This mixed air bubble
It cannot be easily removed by the suction work described above.
Some remain inside. However, the air is resin 2
Since it is lighter than 1, the container 3 is placed on the upper side 1 as shown in FIG.
When 7 is held up, the bubbles 23 rise in the resin 21 as shown in the drawing and gather near the upper end of the resin 21. Some collect smaller bubbles to create larger bubbles. If the container 3 is laid down, the state of the resin 21 in the container 3 naturally changes, and the bubbles 23 may also be dispersed. However, if the state shown in FIG.
3 gathers again near the upper end of the resin 21.

Next, in order to explain a molding method using the resin 1 containing the transparent thin film container, first, referring to FIG. 3, the apparatus used in the molding method of this embodiment is the same as the conventional apparatus. The glass 25, the lower glass 27, and the negative film 29 placed on the lower glass 27 are provided. However, the base film and cover film used in the prior art are unnecessary. Sign 28
Is a hole for air suction provided in the lower glass 27. Illustration of the ultraviolet lamp is omitted.

As shown in FIG. 3, a negative film 29 is placed on the lower glass 27, a spacer 31 is arranged, and a resin accommodating portion 33 is defined. In the resin accommodating portion 33, as shown in FIG.
In this state, the resin 1 in the container, in which bubbles are collected near the upper end of the resin 21, is laid on the negative film 29. Next, the upper glass 25 is rotated in the horizontal direction from the oblique state shown in FIG. 3, and is moved in parallel with the lower glass 27 shown in FIG. During this time, the upper glass 25 is
The side surface of the lower chamber 13 of the container 3 is sequentially pressed from the lower portion 19 side thereof toward the partition seal portion 9. Thereby, the resin 21 in the lower chamber 13 is swept away from the lower portion 19 side toward the partition seal portion 9, but at this time, the bubbles 23 gathered near the upper end portion of the resin 21 become the head of the resin. It flows. Then, the air bubbles are eliminated into the upper chamber 11 through the communication portion 15 formed in the partition seal portion 9.

FIG. 4 shows a state in which this work is completed and the upper glass 25 is pressing the entire container 3 from the upper side. In this state, a small amount of resin 21 will also flow into the upper chamber 11. FIG. 5 is a plan view showing only the resin 1 in the container in this state. The lower chamber 13 is filled with the resin 21 with a constant thickness, and the air 35 is discharged into the upper chamber 11. In this state, ultraviolet irradiation is performed to cure the resin 21. After curing, the resin 1 in the container is taken out, the container 3 is broken, and post-treatment such as washing of the cured resin 21 therein is performed.

[0017]

As is apparent from the above description, when a photosensitive resin is used for molding, air mixed in the resin supplied for molding can be removed to prevent product defects due to air mixing. . In addition, since the resin can be stored in the container in advance and the exposure and curing process can be performed in the state of being stored in the container, the base film, cover film, etc. used conventionally can be eliminated, and the whole work can be done. The efficiency can be extremely high.

[Brief description of drawings]

FIG. 1 is an elevation view of a resin in a transparent thin film container according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of a resin containing a transparent thin film container.

FIG. 3 is a cross-sectional view showing a schematic configuration of a stamp molding apparatus in which a resin in a container is set.

FIG. 4 is a side sectional view of the modeling apparatus in a state in which the exclusion of air is completed.

FIG. 5 is a plan view of the resin contained in the container in a state where the exclusion of air is completed.

FIG. 6 is a schematic configuration diagram of a stamp manufacturing apparatus using a conventional photosensitive resin.

[Explanation of symbols]

 1 Resin in Transparent Thin Film Container 3 Container 5 Upper Sheet 7 Lower Sheet 8 Peripheral Seal Part 9 Partition Seal Part 11 Upper Chamber 13 Lower Chamber 15 Communication Portion 17 Upper Side 19 Lower 21 Resin 23 Air Bubble 25 Upper Glass 27 Lower Glass 28 Suction Hole for use 29 Negative film 31 Spacer

Claims (3)

[Claims] 1. Two upper and lower sheets made of transparent thin films are laminated, a peripheral edge seal portion of the peripheral edge portion is sealed, and the two sheets are placed between two positions of the peripheral edge seal portion, which are separated from each other. Is stretched and bonded to form a strip,
A bag provided with a partition seal part for partitioning a part inside the peripheral seal part into two chambers, and a communication part between the two chambers formed by partially adhering the partition seal part A photosensitive resin contained in a transparent thin film container, characterized in that a predetermined amount of the photosensitive resin is housed in the container and the air inside is sucked and removed. 2. A step of forming a bag-shaped container having an opening by stacking upper and lower two sheets made of transparent thin films and adhering a peripheral edge seal part of the peripheral part except a part thereof, A step of injecting a predetermined amount of a photosensitive resin from the opening toward the bottom of the container, and the upper and lower two sheets, above the photosensitive resin injected into the bag, the adhesive Between the two positions of the peripheral edge seal portion which are separated from each other, except for a part, they are stretched and bonded in a strip shape, and inside the bag, the first chamber in which the photosensitive resin is received and the portion near the opening portion. Partitioning into a second chamber and forming a communication part between the first and second chambers, discharging air from inside the bag, and sealing the opening A method for producing a photosensitive resin in a transparent thin film container, comprising: 3. A photosensitive resin is placed between the upper transparent plate and the lower transparent plate and cured by irradiating with light,
In a molding method for obtaining a desired shape, upper and lower two sheets made of transparent thin films are laminated, a peripheral edge seal portion of the peripheral portion is sealed, and the two sheets are separated from each other in the peripheral seal portion. A partition seal part that is formed by adhering in a strip shape between two positions and partitioning a part inside the peripheral seal part into two chambers,
A predetermined amount of the photosensitive resin is stored in a bag-shaped container provided with a communication part between the two chambers, which is formed by adhering a part of the partition seal part, and the air inside is removed. The photosensitive resin contained in the transparent thin film container that has been sucked and removed is brought into a state where one of the two chambers is on the upper side and the other is on the lower side, and the resin is collected in the other chamber and mixed into the resin. The air, the step of collecting on the upper part of the resin contained in the container, the step of laying the container on the lower transparent plate, the upper transparent plate is moved in a horizontal direction from an oblique state, The upper side surface of the container containing the resin is sequentially pressed from the bottom of the other chamber to the upper part, the resin in the container is moved from the bottom of the other chamber to the upper part, and is collected on the upper part of the resin. The air that has been stored into the one of the chambers is included. Characterized in that there, manufacturing method of a photosensitive resin.