JPS5833459A - Laminated material for easy-unsealing property sealing packing and its manufacture - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an easy-to-open side adhesive material for sealed packaging and a method for manufacturing the same.
-Related.

There are two types of V-Kunto for easy-to-understand M-Seiden N use: Kaien Hojoken's one and a cohesive failure type.

By the way, in general, when liquid contents are sealed and packaged and heat-killed, the container is filled with the contents and sealed in a station area with as little air content as possible to prevent the bag from breaking. ing. In other words, a check is performed to prove that the contents have been radd.

In that case, it is difficult to achieve an easy-to-open seal using a world-mIIlat sealant because it is difficult to obtain the same sealing strength. On the other hand, according to the Cohesive Fracture III glue tent, the stirrup edges are completely fused, so it is possible to carry out tightly sealed packaging without worrying about fracture edges.

However, the sealing V-
Ru has the following tocho points in block form.

As for binding, Poplovile ν-Boederenprendpoomer is currently known as the W family of M1ll & Destruction Oboro's V-Rant.

However, because propylene and polyesterene are highly compatible, it is extremely difficult to make an igyopyrene polymer, and the jl- of the EA film tends to become uneven, and in the case of rough conditions. The film is formed with holes in it.

When forming packaging materials for island-openable packaging, it is necessary to apply a layer of sealant to the base material of a tear-resistant resin film or metal foil, but due to the poor surface shape of V-lunt, , the relationship between the J&Frog layer and V-Rant becomes extremely unstable. This degree of connection has a great influence on the degree of peeling when the package is opened. In the case of the m-end, deflation occurs between the base material layer and the sealant layer, and the contents become blurred and the contents cannot be taken out.

As a result of research, the present inventor aimed to develop a method that maximizes the advantages of using POG pyrene-polyethylene blend polymer as a sealant material, in addition to the above-mentioned drawbacks. Pop Robylene-Polyethylene Prene F! Rimmer.

is an ethylene-a olefin copolymer, IINbvB81
(c) By making a multilayer IIT with a resin that is easy to form into a film, such as polyederene or low viscosity polyester.

We have found that not only can the polypropylene-botaethylene blend polymer film be formed individually, but it can also be maintained without using additives (slap agents, anti-oxidation steel, etc.) that are undesirable from a safety and health standpoint. The present invention has been completed based on this knowledge.

That is, the gist of the invention of Kou 1 is that a laminated film in which one or more runt springs are laminated is used as a base material, and a support layer @ circle is placed on the substrate side 1.
It is an easy-to-open, sealed packaging laminate material that is laminated toward the surface. A polyethylene blended polymer made of a polyethylene blended polymer with a resin with good visibility and At-extrusion, a T-die method or an infusion method is used to make 191 pieces of a polyethylene blended polymer. Collection and destruction V
- The process of obtaining a laminated film consisting of a Kund layer and a support layer supporting it, and the process of obtaining a laminated film consisting of a Kund layer and a support layer that supports it, and the process of obtaining a layered film and material 52 support layer 41i! Easy-to-open property W! ! This is the m selection method of iii Packaging Laminate Co., Ltd.

Hereinafter, the present invention will be described in detail with detailed explanation.

First, polypropylene-polypropylene blend polymer is extruded together with IlIML, and T<, and a gallylI-property 41 fat with polyglopylene-polypropylene blend polymer, and! A laminated film (3) consisting of a die method or a support layer (1) supporting the same is obtained.

Next, this laminated film (3) is laminated to the base material (4) j:, support layer 4IldIJt#jliii material side as shown in Figure 2, thereby producing the ink-openable paper packaging wax 111M of the present invention. (5) is 116.

Then, it is extruded with a pop-a pyrene-botethylene blend polymer in X@MA (:).

As a resin that is easy to form into a film and has a good M1 property with a pop-a bilene-poedelen blend botamer, it is especially a combination of etelecy-a-oleain.

^Density polyethylene and low density polyethylene are preferred.

Next, the thickness of the cohesive failure sealant layer made of Porap σ birene-bora edelene blend polymer is 10 to 100μ.
is appropriate, and when it is less than 10 μ, @ after S Mon 1l II
The intestinal strength is lower than the practical strength, so don't do it (,1
If it is more than 0.00 tones, not only will the cost increase, but the film forming properties will be extremely poor, resulting in poor results.

Next, in the present invention, polypropylene is added in contact with Ii4 to the resin layer described below together with a polypropylene-polyethylene blend polymer and a resin that is suitable for film formation and has a good compatibility with the polypropylene-polyethylene blend polymer. By extruding resins such as polyethylene, ethylene-alpha olefin co-1116, edelene-vinyl acetate co-topolymer, ethylene-#vinyl copolymer saponified product, ionomer resin, polyamide, polyvinylidene chloride, etc. It is a disaster even if it is composed of Noki W1 Soaring.

Next, as the base material in the present invention, thermoplastic resins such as polyethylene, polypropylene, polyester, polyamide, boccarbonate, bostyrene, polyvinyl chloride, metal foils such as aluminum foil, paper, or composite materials thereof can be used.

The laminate material for easily openable sealed packaging lii of the present invention can be applied as a material for IIi material or V-) molded container.

As described in detail above, according to invention G & film made of propylene-polyethylene blend polymer can be formed without additives such as slip agents and antioxidants, which are undesirable in terms of negative properties, so stable peel strength can be achieved as well as the sealant layer. The sealant layer does not pierce the base material, and the sealant layer does not contain any harmful additives. It is possible to manufacture sealing material for packaging.

Next, the present invention will be explained in detail with reference to Examples.

By the inflation method, ethylene-olefin copolymer (11 degrees α95, y process 2) and potupropylene-botaethylene blend polymer (polypropylene; 50w5%
, 5'yfA co-Toai of Edelene content 55-, 1 degree cL
90. Form a multilayer film of n = 40, poly 1 ethylene > H50ws%, density α961M = 12). The thickness is #i40 of ethylene-olein based polymer resin 2011 polypropylene-ethylene blend polymer 204. Using this as a base material (PI (i terra 2 voices/Aj 40 voices), use isocia sheep-1 thread adhesion agent, and attach aluminum foil and ethylene-oleain co-togo resin layer.Mold to form *W. did.

Heat seal this in a polypropylene container (200°
C, 5Q7'j, 1 sac cDy-le condition), the good easy-openability of the 1500F/15 intestine width was impaired. Father, there was no change in beer strength (it was good) when the retort was heated at 155°C for 5o.

High-density polyethylene (density α95
4. M-Tech CL9) and poly-10 birene-polyethylene blend potamer (polypropyref + 50 v'%
, a random coelectric composite with an ethylene content of 45-, a density of 190
%M engineering 6, polyethylene; 50w$li, [degree Q, 96
, MICL2). The distance is 20μ for density polyethylene and 20μ for polypyrene-polyethylene blend polymer, totaling 40J1. This is used as the base material (PIC
〒12＾/hi40s) r:isovl sheep-) system*
Attach mmt'm thick aluminum foil and dliI 11 degree Voethylene resin mesh. Then, a lid body was formed. Add this to a polypropylene volume #1 Niheat V-L (200
“C3”f/ad 15eotDv-klk items) L/
However, when peeled, the product was not easy to open and had a width of 1 s. In addition, even after retort II and cooling at 135"C for 50 minutes, the beer strength was good without wrinkling.

Example 5 T-density polyethylene (wM degree (L
924MIQ.
Density Q, 9Q, MI=lhD, 19 engineering fren; 50wt
%, VIi degree α96, M knee 02). The material was 20μ of low WII degree polypropylene-polyesterene blend 45mer, 20μ in total, 40J1.

Using CofL as a base material (PIT 12μ/muj40s) and Nisosia Sheep-F adhesive, aluminum foil and low-density polyethylene resin frame are bonded together. When the package was conditioned, it had a peeling strength of 170 Orr/15 mm and exhibited excellent ease of opening.

[Brief explanation of the drawing]

Qin Figure 1 is the laminated film t#r cabinet, Figure 2 is Yi 111
i! FIG. 3 is a sectional view of the M-type sealing material for cormorant use. (1)......Support layer (21...Frozen S-destructive V-lunt layer t31
・・・・Laminated film (4)・・・・・・・・・・・・・・・・・Base material (5) ・・・・Patent applicant for laminated material for crystal-openable sealed packaging Patent attorney, Dainippon Insashi Co., Ltd. Ukimi Konishi

Claims (1)

[Scope of Claims] (11. A support layer consisting of one or more layers, on which a #! breakable sealant layer made of a polypropylene-borethelene blend potamer is adhered) is used as a base material. A crystal-openable sealed package characterized by being laminated with the side facing toward the base material. (2) The first supporting layer is made of an ethylene-a olefin coelectrode. Patent - Scope of Claims - Resistant sealed packaging collapse layer material as described in JlG Section 1. (3) - Easily openable material of the Patent Claim characterized in that the distributing layer is made of polyethylene. WfJ11!L!l1N1 櫫斯 frog e (4) The side adhesive material for easily openable sealed packaging according to item 1 of the item 1 of the request, characterized in that the M support film is made of low blueness polyethylene. (5) The side adhesive material for easy-to-open sealed packaging as described in the patent-requested category 1 to s4, which is characterized by being made of a flexible resin film. (6) The above J & material A crystal-openable sealed packaging M4IIlIm material of the patent claim characterized in that the material is made of metal foil. Extrusion with a flk resin with good snow melting properties and a pyrene-botsu ethylene blend polymer, and a molding process using the !gui method or the inflation method.
Step i4 to obtain a laminated film consisting of a cohesive failure V-lant layer made of a cohesive failure V-lunt layer made of a σ birene-bolythelene blend polymer and a support layer supporting it, and a base layer using a sigma laminated film: Support layer @ The feature is that it consists of a process of extending the seal to the base material side and laminating it - no leakage or opening! ) 1.11 * Method of applying oak layer material for sealing and packaging.