JP2008189376A - Inner layer-peelable type dispenser vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inner layer-peelable type dispenser vessel which is made by laminating an outer layer on an inner layer, the outer layer being composed of an excellently transparent and glossy polyester resin or ionomer resin enabling thick shaping, and which prevents a content from being left in the vessel by shrinking (delaminating) only the inner layer depending on use condition of the content in the vessel to concentrate the content in the absorption part of the dispenser vessel. <P>SOLUTION: In the inner layer-peelable type dispenser vessel made by laminating the outer layer on the inner layer, the outer layer is composed of the polyester resin or ionomer resin, the inner layer is composed of at least one of a polyethylene resin and a nylon resin, the outer layer is at least 1 mm or more, and the inner layer shrinks to peel from the outer layer depending on a decrease of the content. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is a container in which an outer layer and an inner layer are overlapped, and a polyester resin or an ionomer resin, which can be formed into a thick wall in the outer layer and has excellent transparency and gloss, is contained in the container. The present invention relates to an inner-layer peelable dispenser container in which only the inner layer is contracted (delaminated) according to the usage state of the container, and the contents are concentrated on the suction portion of the dispenser container, thereby preventing the contents from being left behind in the container.

2. Description of the Related Art Conventionally, there has been known an inner-layer peelable dispenser container that presses a spout portion at the top of a container and takes out the contents in the container by a piston operation (Patent Document 1).
Further, as a multilayer resin bottle, a container is known in which a polyester resin is used for an outer layer and a polyolefin resin is superimposed on an inner layer (Patent Document 2).
Patent document 2 is a prior application document of the present applicant.
JP-A-6-345069 Utility Model Registration No. 2572894

  Generally, when the content filled in a dispenser container is low viscosity, the fluidity of the content is high, so it is easy for the contents to always gather in the suction part in the container, and it is possible to discharge the content to the end. However, if the content is high in viscosity, the fluidity of the content is low, so even if the content in the vicinity of the wicking part can be discharged, the content in the surrounding area is not likely to gather in the wicking part in a short time. There is a problem that it becomes difficult to discharge the contents to the end.

For this reason, it was necessary to devise a method for always allowing the contents to touch the sucked-up portion.
In order to deal with this problem, as shown on the left side of FIG. 3, a drop lid type dispenser container having a drop lid 11 provided on the dispenser container 10 and pressing the spout portion 12 to take out the contents 13 from the nozzle 14. As shown on the right side, there is also a so-called middle dish bottom-up dispenser container in which a dispenser container 10 is provided with a middle dish 15 and the spout portion 12 is pressed to take out the contents 13 from the nozzle 14. This container has a problem that the number of parts is increased and it is difficult to reduce the size of the container, and a shape other than a cylindrical shape cannot be adopted. In the figure, reference numeral 16 denotes an external air intake hole, and 17 denotes a content suction portion.

Furthermore, as shown in Patent Document 1, it is known that the dispenser container is of the inner layer peeling type. In this case, an inner layer peeling type bottle (delamination bottle) is used, but the delamination bottle is extruded. It is molded by blow molding.
That is, the heated resin is extruded into a tube form from an extruder (this extruded tube is called a parison), then the parison is sandwiched between molds, compressed air is fed into the parison, and the mold is further in close contact with the mold and cooled. It is a molding method.
Here, based on the moldability and blowability of the parison, there are problems in resin type selection and wall thickness design, especially from the conventional technology, lacking knowledge about the type of resin to be used, transparency and gloss There was no resin that can be thickly molded.

  Therefore, in the case of the conventional dispenser container, a case separate from the dispenser container formed of a material having excellent surface glossiness is prepared outside the outer layer of the container in order to give a high-class feeling, and the dispenser container is placed in the case. Things were going to be stored. This is a serious problem in the inner-layer peelable dispenser container because there is a particularly strong demand for preventing the peeled state of the inner layer from being seen through from the viewpoint of appearance. However, the inner layer peelable dispenser container can be formed of a material having transparency and gloss that can make the outer layer thick and give a high-class feeling without using such a case. There was a reality that is not known.

  The present invention is a container in which an outer layer and an inner layer are overlapped, and a polyester resin or an ionomer resin that can be formed into a thick wall and can ensure transparency is used for the contents of the contents of the container. Accordingly, it is an object of the present invention to provide an inner-layer peelable dispenser container in which only the inner layer is shrunk and crushed to solve all the above problems.

  The inner layer peelable dispenser container according to the present invention is a container formed by superposing an outer layer and an inner layer, the outer layer is formed of a polyester resin, and the inner layer is at least one of polyethylene resin or nylon resin. The inner layer peelable dispenser container is characterized in that the outer layer has a thickness dimension of at least 1 mm or more, and is formed such that the inner layer peels from the outer layer and contracts in accordance with a decrease in the content.

  Further, claim 2 is a container formed by superposing an outer layer and an inner layer, the outer layer is formed of an ionomer resin, the inner layer is formed of at least one of polyethylene resin or nylon resin, and the thickness dimension of the outer layer is set. It is an inner layer peelable dispenser container formed to be at least 1 mm or more and formed such that the inner layer peels from the outer layer and contracts in accordance with a decrease in the content.

  Further, according to claim 3, at least a part of the outer layer is formed of a transparent or semi-transparent material.

  Furthermore, Claim 4 is the inner layer peeling type dispenser container according to claim 1 or 2, wherein the transparent or translucent part of the outer layer is formed in a vertical strip shape from the upper end to the lower end of the contents storage part of the container. is there.

  A fifth aspect of the present invention is the inner layer peelable dispenser container according to the first aspect, wherein the polyester resin of the outer layer has an IV value of 0.7 or more.

  The inner layer peelable dispenser container according to claim 2, wherein the outer layer ionomer resin is Na type.

  The inner layer peelable dispenser container according to the present invention has a thick outer layer so that the rigidity and weight of the container are sufficiently secured, and it is transparent and can exhibit a good gloss, so it is superior in quality, and further, the inner layer However, there is an effect that the contents in the container can be completely used up to the end because the structure gradually crushes and shrinks (delaminate) in response to the decrease in the contents.

Embodiments of an inner layer peelable dispenser container of the present invention will be described below with reference to the drawings.
FIG. 1 is a longitudinal sectional view of the inner layer peelable dispenser container of the present invention, the left side is a state when the contents are fully filled, the right side is a state where the inner layer is peeled and shrunk, and FIG. 2 is the inner layer of the present invention. FIG. 3 is a front view of the peelable dispenser container and a cross-sectional view taken along line AA of the main part thereof. FIG. 3 is a longitudinal sectional view of a conventional dispenser container. is there.

  The inner layer peelable dispenser container 1 according to the present invention shown in FIG. 1 and FIG. 2 is for storing the contents 2, and the amount of storage is for the contents consisting of a combination of emulsion, hair treatment agent, etc. This is a container with a capacity of about 100-600ml of the content of the discharge amount per time, or for the content made of a combination of cosmetic liquids, and about 30ml of the content of the discharge amount of 0.2ml per time. The capacity of the container is standard.

The dispenser container 1 of the present invention is a container in which an outer layer 3 and an inner layer 4 are overlapped, and is manufactured by multilayer molding by a technique such as extrusion blow molding in the production thereof.
In the present invention, a polyester resin (PET) or ionomer resin that can be thickly molded is used as a material for the outer layer 3 in order to obtain an inner layer peelable dispenser container 1 imparted with a high-class feeling at a lower cost. However, the material of the outer layer 3 can be laminated in multiple layers. When the layers are laminated, the material located in the outermost layer may be a polyester resin or an ionomer resin.
In addition, polyethylene resin (PE) is usually used as the material for the inner layer 4, but nylon resin (PA) can be laminated on polyethylene resin in consideration of strength and flexibility.
In any case, it is important to laminate the outer layer 3 and the inner layer 4 in a pseudo-adhesive state, so that the inner layer 3 peels off from the outer layer and contracts (delaminates) in response to the decrease in the content 2. become.

The preferred examples of the outer layer 3 and the inner layer 4 of the present invention are shown below (in the following examples, the symbol “˜” indicates the site where the outer layer and the inner layer are peeled off, and “adhesive PE” is an adhesive. Polyethylene, "colored PET" indicates a colored polyester resin).
1. PET: 2 mm / adhesive PE: 100 μ / PA: 60 μ / ˜PE: 200 μ
2. Ionomer: 3 mm / PE: 100 μ / ˜PA: 50 μ / Adhesive PE: 150 μ
3. PET: 2 mm / adhesive PE: 80 μ / PE: 80 μ / ˜PA: 50 μ / adhesive PE: 150 μ
4). PET: 2 mm / colored PET: 1 mm / ˜PA: 100 μ / adhesive PE: 100 μ
5. PET: 2 mm / colored PET: 1 mm / ˜PA: 250 μm

Next, regarding the PET material, if the IV value (intrinsic clay) is 0.7 or more, drawdown hardly occurs when the resin is melted, which is preferable for forming a thick material.
As ionomers, there are Na, K, and Zn types as metal species, but Na type is preferable from the viewpoint of ensuring transparency.

  When at least a part of the outer layer 3 of the present invention is formed of a transparent or translucent material, the delamination state of the inner layer 4 can be confirmed through the transparent portion, and the position of the transparent portion can be determined by the content storage portion of the container. When formed in the shape of a vertical strip extending from the upper end to the lower end, the design is excellent and the remaining amount of the contents in the dispenser container can be accurately confirmed to the end.

Furthermore, when the outer layer 3 of the present invention is formed of a light-shielding material, it becomes suitable as a dispenser container that stores light-sensitive contents. It is also possible to form.

  When using the dispenser container 1 of the present invention, the spout 7 is pressed to discharge the content 2 from the nozzle 8, but as the content 2 decreases, the inner layer 4 peels from the outer layer 3 and gradually the inner layer 4. The contents 2 in the inner layer 4 are always collected in the vicinity of the sucking portion 6 of the sucking pipe 5 so that the preparation for the next sucking operation becomes perfect.

  Further, if a part of the outer layer 3 and the inner layer 4 are fixed to the reinforcing adhesive portion 9 by being fixed with a slightly strong adhesive, a part of the inner layer 4 is always adhered to the outer layer 3 at the position of the reinforcing adhesive portion 9. Therefore, it becomes possible to control how the inner layer 4 is crushed.

A comparison table of various materials related to the material selection of the outer layer 3 of the present invention described above is shown.
(Comparison table for material selection)
In the above comparison table, ○ means proper, × means inappropriate, and Δ means between proper and inappropriate.

  INDUSTRIAL APPLICABILITY According to the present invention, it can be used in the field of handling a dispenser container filled with a high-viscosity content.

It is a longitudinal cross-sectional view of the inner layer peeling type dispenser container of this invention, The left side is the state at the time of full filling of a content, and the right side is the state which the inner layer peeled and contracted and collapsed. It is the front view of the inner layer peeling type dispenser container of this invention, and the sectional view on the AA line of the principal part. It is a longitudinal cross-sectional view of the conventional dispenser container, the left side is a drop lid type dispenser container, and the right side is a middle dish bottom type dispenser container.

Explanation of symbols

1, 10 Dispenser container 2, 13 Contents 3 Outer layer 4 Inner layer 5 Suction pipe 6, 17 Suction part 7, 12 Spout 8, 14 Nozzle 9 Reinforcement adhesion part 11 Drop lid 15 Middle dish 16 Taking-in hole

Claims (6)

  A container formed by superposing an outer layer and an inner layer, the outer layer is formed of a polyester resin, the inner layer is formed of at least one of polyethylene resin or nylon resin, and the thickness dimension of the outer layer is formed to be at least 1 mm or more. The inner layer peelable dispenser container is formed such that the inner layer peels from the outer layer and contracts in accordance with the decrease in the content.   A container formed by superposing an outer layer and an inner layer, the outer layer is formed of an ionomer resin, the inner layer is formed of at least one of polyethylene resin or nylon resin, and the thickness dimension of the outer layer is formed to be at least 1 mm or more. The inner layer peelable dispenser container is formed so that the inner layer peels from the outer layer and contracts as the content decreases.   The inner layer peelable dispenser container according to claim 1, wherein at least a part of the outer layer is formed of a transparent or translucent material.   The inner-layer peelable dispenser container according to claim 1 or 2, wherein the transparent or translucent portion of the outer layer is formed in a vertical strip shape from the upper end to the lower end of the content storage portion of the container.   The inner layer peelable dispenser container according to claim 1, wherein the outer layer polyester resin has an IV value of 0.7 or more. The inner layer peelable dispenser container according to claim 2, wherein the outer layer ionomer resin is Na type.