JPS5889676A - Pressure-sensitive adhesive tape and its preparation - Google Patents

Abstract

PURPOSE:A pressure-sensitive adhesive tape for fixing the bottom part of a container pan for cosmetic in an integrated way, by laminating a specific synthetic resing film to the back of an aluminum foil, laminating a strongly pressure-sensitive adhesive layer, a basic material layer and a weakly pressure-sensitive adhesive layer to the surface of the foil in a spot state, laminating a release paper to the surface of the weakly pressure-sensitive adhesive layer to the whole surface. CONSTITUTION:For example, the synthetic resin film (preferably unplasticized PVC film) b having compatibility with the pan 2 made of a synthetic resin to which the titled tape will be applied, having a thickness of 50mu is laminated to the bottom part of the soft aluminum foil a having a thickness of 50mu is laminated to the bottom part of the soft aluminum foil a having a thickness of 50mu, and strongly pressure-sensitive adhesive layer c having tack three times as much as or more than that of a weakly pressure-sensitive layer and a thickness of 40mu, the basic material layer d made of a synthetic resin (preferably polyethylene terephthalate film) having a thickness of 38mu, and the weakly acidic pressure-sensitive adhesive layer e having a thickness of 25-28mu are successively laminat ed to the back surface of the foil in a spot state. The release paper (preferably obtained by laminating polyethylene terephthalate film on PE film) f having a thickness of 110mu is laminated to the surface of the weakly pressure- sensitive adhesive layer to the whole surface, to give the desired film. EFFECT:Since an aluminum foil is laminated internally, the pressure-sensitive layers are prevented from being damaged by pressure and heat during injection molding.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an adhesive tape that is integrally fixed to the bottom of a synthetic resin molded product, such as a compatible product storage plate or container, and a method for manufacturing the same. This invention relates to an adhesive tape that is integrally fixed to the outer bottom surface of a cosmetic storage tray that can be attached and detached into a container, and a method for manufacturing this adhesive tape.

The adhesive tape of the present invention was originally developed for use in a special instant molding method disclosed in Japanese Patent Application Laid-open No. 55-158950, which was previously developed by the applicant of the present invention. In other words, this insert molding method involves punching out a continuous tape into a predetermined shape and feeding it into a mold when molding a container or the like by injection molding, and then integrating the punched tape into a part of the surface of the molded product. The present invention provides an adhesive tape that can be used as such a continuous tape and a method for producing the same.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Reference numeral 1 designates a Tsunpakuto container, and a compatible plate 2 is removably fitted in this recess, and the adhesive tape of the present invention is integrally fixed to the outer bottom surface of this plate 2. In the figure, cosmetics filled in dishes 2 of various sizes from three companies, 4 is the dish 2
Adhesive body integrally fixed to the bottom of
It is a puff stored inside.

Next, we will specifically explain the structure of the adhesive tape, a part of which is punched out and fixed to the bottom of the plate 2 as described above.
In FIGS. 4 and 6, 6 is a partially enlarged cross-sectional view of the adhesive tape that is the source of the adhesive body 4 fixed to the bottom of the plate 2, and 6 is a 60s thick soft arsenium foil. can be,
On the back side of this arsenium hakumaro, a synthetic resin with a thickness of 50J1 that is compatible with the synthetic resin of the synthetic resin vessel 2 to be fixed is placed.
Film B is integrally laminated, and a strong adhesive layer C having a thickness of 401 M and having adhesive strength more than three times as strong as the weak adhesive described below is spotted in a certain shape on the surface of the aluminum foil. A large number of sheets are punched out into shapes and stacked at intervals, and furthermore, on the surface of this strong adhesive layer C, there is a single side (weak one) having the same dimensions as this strong adhesive layer C and a thickness of 3B. Adhesive layer side)! A synthetic resin base layer d formed on the flat surface, and 26 to 2 layers having the same dimensions as this base layer d.
The weak adhesive layers having a thickness of 8J1 are laminated in order in a slush shape and are arranged in parallel. Further, on the surface of the weak adhesive layer, a 110 g layer of original paper f, which can be easily peeled off from the weak adhesive layer e, is laminated as a whole sheet.

This release paper f is constructed by laminating polyethylene film, ethylene terephthalate film, etc.

As mentioned above, the adhesive tape according to the present invention has a synthetic film b compatible with the synthetic resin plate 20 on its outer surface, and is punched into a predetermined shape and inserted into an injection mold. When 8M is injection molded, the film b can be melted by injection molding and the two can be bonded to each other, thereby making it possible to firmly fix the adhesive body 4 to the bottom of the plate 2. , and the Alcee 9M foil 1 is laminated inside, so that the adhesive layer 1 is not eroded by the resin pressure or heat during injection molding.
In addition, the strong adhesive layer C laminated inside strengthens the adhesion between the aluminum foil 1 and the base material layer d, so that the adhesive between the layers can be prevented when the parking body 4 is used. It completely prevents the occurrence of peeling, and furthermore, the adhesive layer @, . . . and the base material layer d are each integrally punched into a predetermined shape so that the adhesive layer @, .
Since it is pasted on the surface of the Alce Crystal Hole in the shape of a sheet, when forming the adhesive body 4 by punching out a part of the adhesive tape 6 of the present application, it is necessary to As shown by the chain line f in FIG. It has the feature of completely preventing clogging and malfunction.

Furthermore, to specifically explain the manufacturing method of the adhesive tape according to the present invention, first, as shown in FIG.
27. A pace sheet is wound by dry laminating and winding a soft arsenium foil 1 having the same width and length as the film B with a length of 600 mm and an unplasticized vinyl chloride film B having a thickness of 50 mm. Configure.

Next, as shown in KIF17mK, a diethylene film 1 & a polyethylene terephthalate film etc. are made in order to have a thickness of 110μ, and a release paper f having a width of 18aQsw and a length of Room, which is aosw larger than the width of the above-mentioned inspection board.
Apply a relatively strong adhesive to the surface of the
A 19-inch plate of 88J thickness was formed by adhering it to form a weak adhesive layer, and one side of the weak adhesive layer was formed with 4 sides of pine.
An ethylene terephthalate film d is lathed to form a base layer, and a strong adhesive having an adhesive strength of 8 times or more than the weak adhesive is added to the surface of the base layer d. Apply adhesive to a thickness of 4011 mm to form a strong adhesive layer (C), and then laminated and adhere release paper for temporary protection on the surface of this strong adhesive layer C. Next, when constructing the sheet as described above and laminating the nine-roller and the end-of-life sheet, first, as shown in Figure 8, the winder is placed in a spot shape from the release paper side for temporary protection. In other words, the release paper f, which is the lowest layer, is not cut at all, but the layers above it, the so-called strong and weak adhesive layer @, the base material layer d, and the release paper are shaped into a predetermined shape. Then, as shown in Fig. 9, part of the outline is left and the part of the outline is punched out in a spot shape. Next, the weak adhesive layer C9 and the base material layer punched out as described above are left on the release paper f for each punch, and the unnecessary parts around them are removed. The resulting strong and weak adhesive layer C'.

・Peel the I and base material layer 41 from the V-shaped paper f while cutting the connected portions of the punched contours using the adhesive force of the adhesive layer C1 of each remaining button, and remove the sheet in this state. Harutori's aluminum foil a on top of the base sheet
The adhesive layer of the present invention is obtained by laminating the pace sheet pulled out from the winder on the adhesive sheet pulled out from the winder so that it faces the strong adhesive layer C on the release paper f, and laminating the two integrally. A tape 6 is constructed and wound up to form a winding C of the adhesive tape 6.

The adhesive tape 6 of the present application can be mounted in a wound state C to an injection molding machine, and the adhesive tape 6 can be sequentially pulled out from there and punched out one after another while being fed into a molding die to perform insertion molding. I can do it.

In this method, a release paper, an aluminum foil, an adhesive layer, a base material layer, etc. are laminated in order using a method similar to that used in construction. This book has the feature that it can be mass-produced at a low cost, and in particular, the adhesive layer can be arranged in spots between the AltJL foil and the release paper.

[Brief explanation of drawings]

FIGS. 1 to 8 are explanatory diagrams showing how the adhesive tape of the present application is used, FIG. 4 is an enlarged sectional view of the tape, FIG. 6 is a plan view thereof, and FIGS. 6WJB to 9 are manufacturing of the tape. FIG. 1: Compact, 2: lI[, 3: Cosmetics, 4: Adhesive body, 6: Pa7.6: Adhesive tape, a: Alyanim 9M foil, C
9.: Adhesive layer, d: Base layer, f, h: Release paper, A, B
, C: Winding. Patent applicant Shiseido Co., Ltd. Yoshida Kogyo Co., Ltd. Patent attorney - Ken Iro Ring tube 2 diagram

Claims (2)

[Claims] (1) An adhesive tape that is integrally fixed to a synthetic resin molded product, the adhesive tape is made by laminating a synthetic resin film that is compatible with the synthetic resin molded product on the back side of an aluminum foil, and On the surface of the paper, a strong adhesive layer punched into a certain shape, a base material layer, and a weak adhesive layer are laminated centrally and integrally in parallel in a swivel shape, and furthermore, a whole sheet of paper is placed on the surface of the weak adhesive layer. It is characterized by being integrally constructed by laminating release papers of shapes. (2) Construct a pace sheet by overlaying a synthetic resin film of the same size on the back side of an aluminum foil with a certain width and distance, and separately on the surface of a release paper with a certain width and thickness. A weak adhesive layer, a base material layer, a strong adhesive layer, and a release paper for temporary protection are laminated in this order, and these are integrally toned to form an adhesive sheet, and then this adhesive seed is temporarily laminated. From the side of the protective release paper, other layers except the release paper, which is the lowest layer, are punched out in spots in a certain shape, and the entire temporary protective release paper, strong adhesive layer, and base layer are punched out. The unnecessary portions of the and weak adhesive layers are peeled off from the adhesive sheet, and the base sheets are laminated so that the aluminum foil is in contact with the strong adhesive layer of the adhesive seed, and both sheets are laminated together. A method for producing an adhesive tape characterized by comprising: