JP2549216Y2 - Mail form - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a mail form used as a secret postcard or the like, and more particularly to a mail form provided with a holding portion for triggering peeling.

[Conventional technology]

In the past, sealed letters have been used for notices from financial institutions and government agencies that have confidentiality. In such envelopes,
At present, a tri-fold mail form that folds the mail form itself, seals the surroundings, and sends the envelope as an envelope is now mainstream.

This three-fold mail form prints confidential information, such as the balance of the deposit and the amount of borrowed money, and turns it into the form of an envelope. This eliminates the need for enclosing and sealing, and ensures that matching between the recipient and the confidential information is ensured. I can do it. Also, since the destination and confidential information can be printed on the same side, they can be printed at once with a high-speed printer such as a non-impact printer (NIP).
Efficient processing can be performed.

However, since the tri-fold mail form is sealed with a pressure-sensitive adhesive only at the peripheral edge, the handling in the postal law is "envelope", and the postage is higher than "postcard". Further, in order to apply the pressure-sensitive adhesive in a pattern shape to the peripheral portion, a relatively low-speed application method such as flexographic printing has to be adopted, which has been one of the causes for increasing the manufacturing cost. Furthermore, there is a possibility that a printing failure due to NIP or the like may occur as a result of a difference in thickness between a portion to which the adhesive is applied and a portion to which the adhesive is not applied and a rise in the back surface to which the adhesive is applied.
Furthermore, there is a problem that the opening margin is generated as garbage at the time of opening.

On the other hand, notices of payment of pensions and reminder letters of unpaid taxes were often given by postcards, and there were many complaints that privacy could not be protected.

For this reason, fold the mail form into two or three folds, fill in the size of the postcard, fill in the confidential information inside, mail the mail form as a postcard, and let the recipient peel off the space between the mail forms. By opening it, secret postcards that can read confidential information are approved and partially implemented.

7 and 8 are views showing a conventional example of a secret postcard.

The secret postcard 3 has a form in which mail papers 31 and 32 are continuously provided, and is folded in the center. Address information 33 is printed on the outside of the mail paper 31, and secret information is printed on the inside of the mail papers 31 and 32. 34 is filled in. The insides of the mail sheets 31 and 32 are brought into close contact with each other by a laminated adhesive sheet 35.

In this state, postcards can be mailed at the postcard fee, and the confidential information 34 cannot be read by a third party. If the recipient peels off the peeling portion 35c of the laminated adhesive sheet 35, the recipient can open the secret information 34 without damaging the secret information 34 and can read the secret information 34.

The secret postcard 4 has a form in which mail sheets 41, 42, and 43 are continuously provided and folded in three. Address information 44 is printed on the outside of the mail sheet 41, and the inside of the mail sheet 42 and the mail sheet 43 opposed thereto are printed. The secret information 45 is printed on the surface of
The address information 44 and the secret information 45 can be printed in one printing. The mail papers 41 and 42 are completely adhered to each other, and the mail papers 42 and 43 are brought into close contact with the entire surface of the mail papers 42 and 43 in a releasable manner using the above-mentioned laminated adhesive sheet.

[Problems to be solved by the invention]

However, in the case of the former secret postcard 3, the address information must be printed outside the folded mail form and the secret information must be printed inside. For this reason, since printing must be performed twice, the processing speed may be reduced to about half, and the address information and the secret information may be mismatched and the secret information may be sent to another address.

In addition, the latter secret postcard 4 has a problem in that mail paper, a laminated adhesive sheet, an adhesive, and the like are required for each postcard in order to be folded into three.

In any of the above cases, since the laminated adhesive sheet is sandwiched and adhered to the entire surface, the work is troublesome, and includes a processing machine and a processing step different from the above-described three-fold mail form for envelopes which is currently mainstream. Therefore, a major change in the equipment is required.

In order to solve the above-mentioned problem, the present applicant has already proposed an all-contact mail form in which a weak pressure-sensitive adhesive layer is formed on almost the entire surface of a substrate to be adhered.

With this full-contact mail form, if the self-adhesive force between the weak adhesives is weak, the folded mail form will peel off during mailing, and conversely, if the self-adhesive strength increases, the folded mail form will peel off When trying to do so, there was a problem that the trigger could not be grasped and peeling was difficult.

The purpose of the present invention is to use a mail processing machine and processing process for a three-fold mail form for envelopes as it is, which can reduce manufacturing costs, greatly improve processing speed, and can easily be peeled even if the self-adhesive force is strengthened. Is to provide a form.

[Means for solving the problem]

In order to solve the above-mentioned problem, the mail form according to the present invention forms a weak pressure-sensitive adhesive layer which adheres by pressure to almost the entire surface of the substrate to be brought into close contact, and forms a printing layer on the surface of the weak pressure-sensitive adhesive layer. Then, folded or laminated the base material, after covering the printing layer by closely adhering the weak pressure-sensitive adhesive layers on opposing surfaces, a mail form peeled from the weak pressure-sensitive adhesive layer, A release layer for weakening the adhesive force between the weak pressure-sensitive adhesive layers is formed at the peripheral edge when the base material is folded or laminated, thereby forming a holding portion for starting peeling.

In this case, the release layer can be formed by toner together with the print layer.

〔Example〕

Hereinafter, the present invention will be described in detail for embodiments with reference to the drawings and the like.

1 to 4 are views showing a first embodiment of a mail form according to the present invention, wherein FIG. 1 is a plan view and FIG.
FIG. 1 is a sectional view taken along the line AA in FIG. 1, FIG. 3 is a view showing a state of close contact, and FIG. 4 is an enlarged sectional view of the contact surface.

As shown in FIG. 1, the mail form 1 is a sheet of paper approximately three times the size of a normal postcard (standard postcard).
It is used by folding three lines from the planned bending lines p and q shown by the dotted lines, and the left column is a public information entry area X for entering address information and the like, and the middle and right columns are secret information for entering secret information and the like. This is a writing area Y.

FIG. 2 shows the mail form 1 cut along the line AA of FIG. 1, and shows the two surfaces of the base material 11 that are to be brought into close contact with each other (the surfaces excluding the front and back surfaces when folded). Weak adhesive layer
12 are formed.

In this mail form 1, when the print layer 13 is formed by performing single-sided printing on the public information entry area X and the secret information entry area Y using NIP or the like, the release layer 14 is formed together with toner (first (FIG. 2, FIG. 2), folded in three with the secret information entry area Y inside, and used in close contact with the entire surface (FIG. 3).

FIG. 4 shows a state in which the mail form 1 is printed, the printing layer 13 and the release layer 14 are formed with toner, and then folded and sealed, and the space between the base material 11 and the weak adhesive layer 12 is formed. Α, the adhesive strength between the weak adhesive layers 12 is β, the adhesive strength between the weak adhesive layer 12 and the back surface of the printing layer 13 or the release layer 14 is γ, the weak adhesive layer 12 and the printing layer 13 Alternatively, when the adhesive force with respect to the surface of the release layer 14 is δ, the adhesive force α> the adhesive force β, the adhesive force γ> the adhesive force δ.

Next, a specific structure will be described in more detail.

As the base material 11, white high-quality paper is usually used, but if the surface is roughened by corona treatment or mat treatment, a synthetic resin film such as PET, PE, PP, vinyl chloride, or the like may be used. Can also.

The weak pressure-sensitive adhesive layer 12 can use a pressure-sensitive adhesive mainly composed of SBR (styrene-butadiene rubber) as a resin component, water as a volatile component, and microsilica as a pigment component. In addition, in order to improve the adhesion between the adhesives,
A trace amount of NR (natural rubber) or PMMA (polymethyl methacrylate) may be added. Further, by adding an alkali component such as ammonia, which absorbs ultraviolet rays better than the resin component, deterioration due to ultraviolet rays can be prevented. Further, a trace amount of vinyl acetate may be added.

As an additive for improving printability, various dispersions, nonmetallic powders, and the like may be used in addition to microsilica.

Among the components of the pressure-sensitive adhesive described above, SBR has good adhesion to plain paper, and self-adhesion between pressure-sensitive adhesives is not very good. NR
Has poor adhesion but good self-adhesion. PMMA has good adhesion and self-adhesion.

Therefore, in order to increase the adhesive force α, the adhesive having little self-adhesiveness between the adhesives and using SBR as a main component having good adhesion instead is used. However, in this state, although the relational expression of “adhesive force α> adhesive force β” among the above expressions is satisfied, the adhesive force γ cannot be increased. With a slight roughness, the suitability for printing by NIP was enhanced, and the adhesion between the toner to be the weak adhesive layer 12 and the printing layer 13 was increased.

Since the toner is fixed to the weak pressure-sensitive adhesive layer 12 by heat, even if pressure is applied from the surface facing the seal, the toner does not transfer to the surface facing the peeling. Further, if the print layers 13 made of toner are brought into close contact with each other so as to overlap, although the toner itself has weak adhesiveness, the adhesive strength at that portion is weakened. Therefore, it is desirable that the toner does not overlap according to the layout of printing.

In this example, the above components were mixed and used in the following ratio.

SBR 20 to 25 parts Water 65 to 70 parts Micro silica 10 parts NR trace PMMA trace A weak pressure-sensitive adhesive layer 12 can be formed by applying a pressure-sensitive adhesive such as coating with a coater that can be operated at relatively high speed. . In the conventional flexo method, the adhesive in the bat was discarded with time, so it was applied to the entire surface as in the present invention. In some cases, the size is small, and the used amount does not change significantly, resulting in cost reduction.

The release layer 14 may be any portion as long as it is a peripheral portion of the base material 11 when folded, may be continuous with one or more sides, or may be a part of one side. . The width of the release layer 14 is not particularly limited as long as it is about 1 mm or more.

The release layer 14, when printing address information and confidential information,
Can be formed with NIP toner together. In addition to toner, printing ink, urethane resin, wax,
Thermal transfer ribbons and the like can also be used.

The mail form 1 uses the NIP to store the address, name, and other public information in the public information entry area X and the secret information such as the expiration notice of the financial product in the secret information entry area Y using the NIP.
Print one side at a time. Since the public information and the secret information can be printed on one side at a time, the printing speed is high and it is easy and reliable to match both information.

At this time, since the release layer 14 is formed simultaneously with the NIP toner, no special equipment is required to form the release layer 14, and the location where the release layer 14 is formed can be freely laid out. Further, as shown in FIG. 1, it is preferable that the release layer 14 is provided at a position facing the folded layer 14 when folded.

Thereafter, the mail form 1 is bent from the planned bending lines p and q, folded in three, and brought into close contact with each other (FIG. 3).
If the mail form 1 is mailed in this state, the postage will be treated as a postcard.

As shown in FIG. 3B, the recipient may damage the confidential information by using the part of the release layer 14 as a starting point for peeling, and using that part as the holding part 2 and peeling between the weak adhesive layers 12. Can be opened without having to read the secret information.

5 and 6 show the mail form according to the present invention.
FIG. 2 is a diagram showing a third embodiment.

Note that parts that perform the same functions as in the first embodiment described above are denoted by the same reference numerals.

In the mail form 1A of the second embodiment, the release layer 14 is provided in the middle part on the right side of the right column. Release layer in this position
If 14 is provided, inadvertent peeling is unlikely to occur when a postcard is conveyed by a zip code reader or the like.

In the mail form 1B of the third embodiment, the release layer 14 is formed in a belt shape along the planned bending line p.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the present invention.

This mail form is not limited to three-fold, but may be two-fold or four-fold or more, and the number of print surfaces and print information are not particularly limited. It is desirable that the size and weight when folded be a normal postcard determined by the Postal Law, but it is not particularly limited in consideration of the usage form. Further, the form in which information is printed may be continuous paper or cut sheet paper, and the printer is not limited to the NIP but may be a dot impact printer. Furthermore, information that does not require confidentiality can be appropriately printed on the mail form. Furthermore, a strong adhesive layer (such as an NR base) may be provided on the entire or a part of the peripheral edge so as not to cover a portion to be printed, or a weak adhesive layer may be thickened so as not to be opened unnecessarily. . In addition, if the weak pressure-sensitive adhesive layer at the position where the release layer 14 is formed is not applied with toner or the like, the same effect as provided with the release layer can be obtained.

[Effect of the invention]

As described above in detail, according to the present invention, a processing machine and a processing process of a three-fold mail form for envelopes which are currently widely used can be used as they are, and a weak pressure-sensitive adhesive layer is formed on the entire surface of the base material. Because it is formed, it can be manufactured using a high-speed coating device, and it is possible to reduce the cost per sheet, and there is no large unevenness due to the adhesive on the surface.
Good flatness and poor printing failure.

In addition, since the holding portion was provided by the release layer on the peripheral edge when folded and laminated, the peeling started, and even if the self-adhesive force of the weak pressure-sensitive adhesive layer was increased, the peeling could be easily performed.

In this case, if the release layer is formed by toner together with the print layer as in claim (2), the holding portion can be easily provided without requiring special equipment.

[Brief description of the drawings]

1 to 4 show the first form of the mail form according to the present invention.
FIG. 1 is a plan view, FIG. 2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a view showing a contact state, and FIG. It is an expanded sectional view. Fig. 5 and Fig. 6 show the second and third mail forms according to the present invention.
FIG. 11 is a diagram showing a third embodiment. 7 and 8 are views showing a conventional example of a secret postcard. 1,1A, 1B mail form 11 base material 12 weak adhesive layer 13 printing layer 14 release layer 2 holding part X public information entry area Y secret Information entry area

Claims (2)

(57) [Scope of request for utility model registration] 1. A weak pressure-sensitive adhesive layer which adheres by pressure to substantially the entire surface of a substrate to be brought into close contact with a substrate, a printing layer is formed on the surface of the weak pressure-sensitive adhesive layer, and the substrate is folded or laminated. Then, after covering the printing layer by closely adhering the weak pressure-sensitive adhesive layers on the opposing surfaces, the mail form peeled from the weak pressure-sensitive adhesive layer, when the substrate is folded or laminated A mail form, characterized in that a release layer for weakening the adhesive force between the weak pressure-sensitive adhesive layers is formed at a peripheral edge of the holding part to be a starting part for peeling. 2. The mail form according to claim 1, wherein said release layer is formed of toner together with a print layer.